Ventilation device, cabinet air conditioner indoor unit and control method

Abstract

The application provides a ventilation device, a cabinet air conditioner indoor unit and a control method. The ventilation device comprises a ventilation frame, an air guide module and a filter module. The ventilation frame is formed with a ventilation opening. The air guide module comprises a plurality of air guide plates. The filter module comprises a plurality of filter screens. The plurality of air guide plates and the plurality of filter screens are sequentially arranged along the length direction of the ventilation opening. Each air guide plate and each filter screen are rotatably arranged at the ventilation opening. When air inlet of the ventilation opening is needed, the ventilation device is in an air inlet mode. The air guide plate is in a state of opening the ventilation opening and is static. The ventilation opening can be in air inlet from a first ventilation end to a second ventilation end. The filter screen is in an unfolded state and can filter the air flowing through, so as to improve the air inlet quality. When air outlet of the ventilation opening is needed, the ventilation device is in an air outlet mode. The air guide plate is in a state of opening the ventilation opening. The ventilation opening can be in air outlet from the second ventilation end to the first ventilation end. The plurality of filter screens are in a stacked state. The air does not flow through the filter screen. The filter screen does not affect the air outlet effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation, and in particular relates to a ventilation device, a cabinet-type air-conditioning indoor unit and a control method. Background Art

[0002] Existing ventilation systems can achieve reversible airflow by adjusting the fan's direction or the position of the windshield, allowing for up-and-downflow airflow, or vice versa, to meet a variety of airflow requirements. This reversible airflow design requires filters at both the upwind and downwind vents. While these filters filter the incoming air and improve its quality, they also create resistance to the outgoing air, affecting both the volume and direction of the airflow. In particular, when the vent switches from inlet to outlet, the airflow impacts the filters, causing accumulated dust to fall off and enter the room with the outgoing air, reducing indoor air quality. Summary of the Invention

[0003] In view of this, the present invention provides a ventilation device, a cabinet air-conditioning indoor unit and a control method to solve the problems in existing ventilation equipment that the state of the filter cannot be synchronously adjusted according to the inlet and outlet air conditions of the vents, resulting in the filter affecting the air outlet effect and dust on the filter entering the room and reducing the indoor air quality.

[0004] The present invention provides a ventilation device, comprising:

[0005] A ventilation frame is formed with a ventilation opening; the ventilation opening includes a first ventilation end and a second ventilation end that are oppositely arranged in a depth direction of the ventilation opening;

[0006] An air guide module and a filter module, wherein the air guide module includes a plurality of air guide plates, and the filter module includes a plurality of filter screens; the plurality of air guide plates and the plurality of filter screens are sequentially arranged along the length direction of the vent, and each of the air guide plates and each of the filter screens are rotatably arranged at the vent;

[0007] The ventilation device has an air inlet mode and an air outlet mode;

[0008] When the ventilation device is in the air intake mode, the air guide plate is in a state of opening the vent, and the vent can take in air from the first ventilation end to the second ventilation end; the filter is in an unfolded state and can filter the air flowing through;

[0009] When the ventilation device is in the air outlet mode, the air guide plate is in a state of opening the vent, and the vent can discharge air from the second ventilation end to the first ventilation end; and the plurality of filters are in a stacked state.

[0010] Further optionally, the air outlet mode includes an air guiding air outlet mode and an air sweeping air outlet mode;

[0011] When the ventilation device is in the air guiding and outlet mode, the air guide plate and the filter are both stationary;

[0012] When the ventilation device is in the air sweeping and outlet mode, the air guide plate and the filter screen swing synchronously to sweep the air flowing through.

[0013] Further optionally, when the air guide plates are in a state of opening the vents, the plane where the entire air guide plates are located is inclined relative to the plane where the entire vents are located;

[0014] When the filter screen is in the expanded state, a plurality of the filter screens are sequentially spliced ​​and combined to form a filter structure, and the filter structure can cover the vent;

[0015] When the air guide plates and the filter screen are in a synchronous swinging state, each air guide plate and the corresponding filter screen are combined to form an air sweeping structure, and the air sweeping structure as a whole swings relative to the vent.

[0016] Further optionally, the ventilation device further includes a closed mode; when the ventilation device is in the closed mode, the plurality of air guide plates are sequentially spliced ​​and combined to form a sealing structure, the sealing structure can close the vent, and the filter is in an expanded state and no air flows through it;

[0017] Wherein, relative to the air guide plate, the filter screen is closer to the second ventilation end.

[0018] Further optionally, the rotation axis of each of the air deflectors is arranged in parallel, and the rotation axis of each of the air deflectors is arranged in parallel with the rotation axis of the corresponding filter screen;

[0019] The rotation axis of the air guide plate and the rotation axis of the corresponding filter are offset in the length direction and depth direction of the vent;

[0020] The rotation axis of the air guide plate is arranged close to the first ventilation end, and the rotation axis of the filter screen is arranged close to the second ventilation end.

[0021] Further optionally, the length direction of the air deflector is parallel to the width direction of the vent; the air deflector includes an air deflector rotating end and an air deflector free end that are arranged opposite to each other in the width direction of the air deflector; and the air deflector rotating end can be rotatably arranged on the ventilation frame;

[0022] When the air guide plate opens the vent, the free end of the air guide plate is away from the vent; when the air guide plate closes the vent, the free end of the air guide plate is close to the vent.

[0023] Further optionally, each of the filters includes a filter support and a filter body detachably arranged on the filter support;

[0024] When the plurality of filters are in the stacked state and stationary, the filter body can be removed from the filter holder, or the filter body can be installed on the filter holder.

[0025] Further optionally, the length direction of the filter is parallel to the width direction of the vent, and the plurality of filter screens and the plurality of air guide plates are arranged in a one-to-one correspondence; the filter screen includes a filter screen rotating end and a filter screen free end that are arranged opposite to each other in the width direction of the filter screen; the filter screen rotating end is rotatably arranged on the ventilation frame;

[0026] When the filter screen is in the expanded state, the free end of the filter screen is close to the vent; when the filter screen is in the stacked state, the free end of the filter screen is away from the vent.

[0027] Further optionally, the length direction of the filter screen is parallel to the width direction of the vent, the plurality of filter screens include a plurality of first filter screens and a plurality of second filter screens, and the plurality of first filter screens and the plurality of second filter screens are alternately arranged in the length direction of the vent; the width of the first filter screen is greater than the width of the second filter screen; the first filter screen and the air guide plate are arranged in a one-to-one correspondence, and the second filter screen and the air guide plate are arranged in a one-to-one correspondence;

[0028] The first filter screen includes two filter screen free ends arranged opposite to each other in the width direction of the first filter screen and a bracket rotating portion arranged between the two filter screen free ends; the bracket rotating portion is rotatably arranged on the ventilation frame;

[0029] The second filter screen includes a filter screen rotating end and a filter screen free end which are arranged opposite to each other in the width direction of the second filter screen; the filter screen rotating end is rotatably arranged on the ventilation frame;

[0030] When the filter screen is in the expanded state, the free end of the filter screen is close to the vent; when the filter screen is in the stacked state, the free end of the filter screen is away from the vent.

[0031] Further optionally, when the filter screen is in the expanded state, a plurality of the first filter screens and a plurality of the second filter screens are sequentially spliced ​​and combined to form a filter structure;

[0032] Wherein, the filtering surface of each first filter screen and each second filter screen are arranged to be inclined relative to the plane where the entire vent is located.

[0033] The present invention also provides a cabinet-type air-conditioning indoor unit, comprising a casing and a ventilation device as described above; an upwind outlet is formed on the upper side of the casing, and a downwind outlet is formed on the lower side of the casing; the ventilation device is arranged at the upwind outlet and / or the downwind outlet; an air duct is formed inside the casing, the air duct connects the upwind outlet and the downwind outlet, and a fan is arranged in the air duct.

[0034] Further optionally, the cabinet air conditioner indoor unit is provided with a bottom air inlet and top air outlet mode and a top air inlet and bottom air outlet mode;

[0035] When the cabinet air conditioner indoor unit is in the lower air inlet and upper air outlet mode, the ventilation device at the lower air outlet is in the air inlet mode, the ventilation device at the upper air outlet is in the air outlet mode, and the cabinet air conditioner indoor unit takes in air from the lower air outlet and discharges air from the upper air outlet;

[0036] When the cabinet air-conditioning indoor unit is in the upper air inlet and lower air outlet mode, the ventilation device at the upper air outlet is in the air inlet mode, and the ventilation device at the lower air outlet is in the air outlet mode. The cabinet air-conditioning indoor unit takes in air from the upper air outlet and discharges air from the lower air outlet.

[0037] Further optionally, the air outlet mode includes a guide air outlet mode and a sweep air outlet mode;

[0038] When the ventilation device at the upper air outlet is in the wind sweeping mode, the air guide plate and the filter at the upper air outlet swing synchronously along the front-to-back direction of the housing;

[0039] When the ventilation device at the downwind port is in the wind sweeping and outlet mode, the air guide plate and the filter screen at the downwind port swing synchronously along the left and right directions of the casing.

[0040] The present invention further provides a control method for a cabinet air conditioner indoor unit, wherein the cabinet air conditioner indoor unit is any one of the above cabinet air conditioner indoor units, wherein the plurality of filters include a first filter, a second filter, a third filter, ... an Nth filter, and an N+1th filter arranged in sequence along the length direction of the vent; the control method includes a method for determining whether the filters are dirty, and the method for determining whether the filters are dirty includes:

[0041] According to the arrangement order of the plurality of filter screens, the plurality of filter screens are sequentially placed in an unfolded state;

[0042] Before the Nth filter is deployed, the power P of the fan is obtained. N-1 After the Nth filter is deployed, the power P of the fan is obtained N ;

[0043] According to the power P N-1and power P N Determining a dirtiness of the Nth filter;

[0044] Wherein, N is a positive integer, and N≥2.

[0045] Further optionally, the power P N-1 and power P N Determining the dirtiness of the Nth filter includes:

[0046] Calculate the power P N-1 and power P N The power difference;

[0047] comparing the power difference with a preset value;

[0048] When the power difference is greater than or equal to the preset value, it is determined that the Nth filter is seriously dirty and needs to be cleaned or replaced;

[0049] When the power difference is less than the preset value, it is determined that the Nth filter is not seriously dirty and does not need to be cleaned or replaced.

[0050] Further optionally, the control method further includes an indoor unit noise reduction control method, and the indoor unit noise reduction control method includes:

[0051] Get the current temperature of the indoor air;

[0052] Calculating the temperature difference between the current temperature and a preset temperature;

[0053] Determining whether the temperature difference is within the preset range;

[0054] When the temperature difference is within a preset range, some of the plurality of filter screens are placed in the stacked state and / or the rotation speed of the fan is reduced.

[0055] Further optionally, the control method further includes an air intake flow control method, and the air intake flow control method includes:

[0056] Get the current turbidity of indoor air;

[0057] comparing the current turbidity with a preset turbidity;

[0058] When the current turbidity is less than the preset turbidity, the plurality of filter screens are placed in a stacked state.

[0059] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0060] When air needs to be introduced through the vents, the ventilation device is in the air intake mode, the air guide plate is in the state of opening the vents and is stationary, and the vents can take in air from the first ventilation end to the second ventilation end; the filter is in the unfolded state and can filter the air flowing through; the filter filters the incoming air to improve the quality of the incoming air;

[0061] When the vent needs to be ventilated, the ventilation device is placed in the vent mode, the air guide plate opens the vent, and the vent can vent air from the second vent end to the first vent end; multiple filters are in a stacked state; air does not flow through the filter, and the filter does not affect the venting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0063] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modification, change in proportion, or adjustment of size, without affecting the efficacy and purpose of the present invention, shall still fall within the scope of the technical contents disclosed in the present invention.

[0064] Figure 1 A schematic diagram of the assembly structure of a ventilation device embodiment provided by the present invention;

[0065] Figure 2 A schematic diagram of the exploded structure of an embodiment of the ventilation device provided by the present invention;

[0066] Figure 3a A schematic structural diagram of an embodiment of the ventilation device provided by the present invention (multiple filters and multiple air guide plates are provided in a one-to-one correspondence) in the air intake mode;

[0067] Figure 3b A schematic structural diagram of an embodiment of the ventilation device provided by the present invention (multiple filters and multiple air guide plates are provided in a one-to-one correspondence) in the air outlet mode;

[0068] Figure 3c A schematic structural diagram of an embodiment of the ventilation device provided by the present invention (multiple filters and multiple air guide plates are provided in a one-to-one correspondence) in a closed mode;

[0069] Figure 4This is a schematic structural diagram of an embodiment of the ventilation device provided by the present invention when the filter holder and the filter body are separated;

[0070] Figure 5a A schematic structural diagram of an embodiment of the ventilation device provided by the present invention (the rotation axis of the air guide plate and the rotation axis of the filter screen are staggered) in the air intake mode;

[0071] Figure 5b A schematic structural diagram of an embodiment of the ventilation device provided by the present invention (the rotation axis of the air guide plate and the rotation axis of the filter are staggered) in the air outlet mode;

[0072] Figure 6a A schematic cross-sectional view of an embodiment of the ventilation device provided by the present invention (the first filter screen and the second filter screen are both provided in a one-to-one correspondence with the air guide plate) in the air intake mode;

[0073] Figure 6b A schematic diagram of the axial structure of an embodiment of the ventilation device provided by the present invention (the first filter screen and the second filter screen are both provided in a one-to-one correspondence with the air guide plate) in the air outlet mode;

[0074] Figure 6c A schematic cross-sectional view of an embodiment of the ventilation device provided by the present invention (the first filter screen and the second filter screen are both provided in a one-to-one correspondence with the air guide plate) in the air outlet mode;

[0075] Figure 7 A schematic structural diagram of an embodiment of a cabinet-type air-conditioning indoor unit provided by the present invention;

[0076] In the picture:

[0077] 1-ventilation device; 11-ventilation frame; 111-ventilation port; 1111-first ventilation end; 1112-second ventilation end; 112-wind deflector shaft hole; 113-filter shaft hole; 12-wind deflector module; 121-wind deflector; 1211-wind deflector rotating end; 1212-wind deflector free end; 1213-wind deflector shaft; 122-wind deflector transmission mechanism; 1221-wind deflector crank; 1222-wind deflector Connecting rod; 123 - air guide motor; 13 - filter module; 131 - filter screen; 1311 - first filter screen; 1312 - second filter screen; 1313 - filter screen rotating end; 1314 - filter screen free end; 1315 - filter screen bracket; 1316 - filter screen rotating shaft; 1317 - filter screen body; 132 - filter transmission mechanism; 1321 - filter crank; 1322 - filter connecting rod; 133 - filter motor;

[0078] 2-cabinet-type air conditioner indoor unit; 21-casing; 22-upper air outlet; 23-lower air outlet. DETAILED DESCRIPTION

[0079] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0080] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0081] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0082] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0083] In existing ventilation equipment with up and down reversible air outlet function, the filter screen has resistance to air outlet, affecting the air volume and direction. In particular, when the vent is switched from air intake to air outlet, dust on the filter screen will enter the room, reducing indoor air quality.

[0084] The present invention creatively provides a ventilation device, comprising a ventilation frame, an air guide module, and a filter module. The ventilation frame is formed with a ventilation opening. The air guide module includes a plurality of air guide plates, and the filter module includes a plurality of filter screens. The plurality of air guide plates and the plurality of filter screens are sequentially arranged along the length direction of the ventilation opening, and each air guide plate and each filter screen are rotatably arranged at the ventilation opening.

[0085] According to the air inlet and outlet modes of the ventilation device, the state of the filter is adjusted synchronously, so that the filter can filter the incoming air without affecting the outgoing air.

[0086] When the ventilation device is in the air intake mode, the air guide plate is in the state of opening the vent, and the vent can take in air from the first ventilation end to the second ventilation end; the filter is in the unfolded state and can filter the air flowing through; the filter filters the incoming air to improve the quality of the incoming air; when the ventilation device is in the air outlet mode, the air guide plate is in the state of opening the vent, and the vent can discharge air from the second ventilation end to the first ventilation end; multiple filters are in a stacked state; air does not flow through the filter, and the filter does not affect the air outlet effect.

[0087] Example 1

[0088] <Ventilation device>

[0089] like Figures 1 to 5b As shown, this embodiment provides a ventilation device 1, comprising:

[0090] The ventilation frame 11 is formed with a ventilation opening 111; the ventilation opening 111 includes a first ventilation end 1111 and a second ventilation end 1112 arranged opposite to each other in the depth direction of the ventilation opening 111;

[0091] The air guide module 12 and the filter module 13 include a plurality of air guide plates 121 and a plurality of filter screens 131. The plurality of air guide plates 121 and the plurality of filter screens 131 are sequentially arranged along the length direction of the vent 111. Each air guide plate 121 and each filter screen 131 are rotatably arranged at the vent 111. Each air guide plate 121 can be controlled to rotate independently, and each filter screen 131 can be controlled to rotate independently.

[0092] The ventilation device 1 has an air inlet mode and an air outlet mode;

[0093] When the ventilation device 1 is in the air intake mode, the air guide plate 121 is in a state of opening the vent 111, and the vent 111 can take in air from the first ventilation end 1111 to the second ventilation end 1112; the filter 131 is in an unfolded state and can filter the air passing through; the air enters the vent 111 through the first ventilation end 1111 and is discharged through the second ventilation end 1112, and when the air flows through the filter 131, the dust in the air is trapped by the filter 131; preferably, when the ventilation device 1 is in the air intake mode, the air guide plate 121 is in a state of opening the vent 111 and is stationary;

[0094] When the ventilation device 1 is in the air outlet mode, the air guide plate 121 is in the state of opening the vent 111, and the vent 111 can discharge air from the second ventilation end 1112 to the first ventilation end 1111; multiple filters 131 are in a stacked state; air enters the vent 111 from the second ventilation end 1112 and is discharged through the first ventilation end 1111, and the air does not flow through the filter 131, and the filter 131 does not affect the air outlet.

[0095] According to the air intake mode, air outlet mode or air intake and outlet conditions of the ventilation device 1, the air guide plate 121 and the filter 131 can be placed in corresponding states, so that the filter 131 can filter the incoming air and improve the quality of the incoming air. The filter 131 has no resistance to the outgoing air, which improves the outgoing air effect and has strong versatility.

[0096] Furthermore, the air outlet mode includes a guide air outlet mode and a sweep air outlet mode;

[0097] When the ventilation device 1 is in the air guide and outlet mode, the air guide plate 121 and the filter screen 131 are both stationary; the air guide plate 121 has a guiding effect on the air outlet, and the vent 111 can discharge air in a certain direction and send air to a certain position;

[0098] When the ventilation device 1 is in the sweeping air outlet mode, the air guide plate 121 and the filter screen 131 swing synchronously to sweep the air flowing through; the air guide plate 121 has a sweeping effect on the air outlet, so that the vent 111 can supply air to a certain area, thereby increasing the air supply range;

[0099] The ventilation device 1 includes two air outlet modes, and the air outlet mode can be flexibly selected to meet various air outlet needs; when air needs to be supplied to a certain location, the guide air outlet mode is selected; when air needs to be supplied to a certain area, the sweeping air outlet mode is selected.

[0100] The following describes the specific states of the air guide plates 121 and the filter screens 131 when the ventilation device 1 is in different modes. Multiple air guide plates 121 and multiple filter screens 131 are provided in a one-to-one correspondence; when the air guide plates 121 are in the state of opening the vent 111, the plane on which the entirety of each air guide plate 121 is located is tilted relative to the plane on which the entirety of the vent 111 is located, and the multiple air guide plates 121 are in a stacked state; preferably, the plane on which the entirety of each air guide plate 121 is located is perpendicular to the plane on which the entirety of the vent 111 is located to achieve maximum air intake flow; wherein, the plane on which the entirety of the air guide plates 121 is located is the air guide surface of the air guide plates 121, and the plane on which the entirety of the vent 111 is located is a plane perpendicular to the depth direction of the vent 111;

[0101] When the filter 131 is in the unfolded state, the multiple filter screens 131 are sequentially spliced ​​and combined to form a filter structure, which can cover the vent 111; when air flows through the filter structure, dust therein is trapped by the filter structure; preferably, the plane where each filter screen 131 is located is parallel to the plane where the vent 111 is located, and the filter screen 131 effectively filters the air flowing through; the inclination angle of the plane where the filter screen 131 is located relative to the plane where the vent 111 is located can be adjusted according to the indoor air quality; for example, when the indoor air quality is good, the plane where the filter screen 131 is located can be tilted at a certain angle relative to the plane where the vent 111 is located, thereby reducing the filtration resistance and improving the air intake efficiency;

[0102] When the air guide plate 121 and the filter screen 131 are in a synchronous swinging state, each air guide plate 121 and the corresponding filter screen 131 form a wind sweeping structure, and the wind sweeping structure as a whole swings relative to the vent 111; the wind sweeping structure sweeps the air flowing through, thereby increasing the air supply range;

[0103] When multiple filter screens 131 are in a stacked state, the multiple filter screens 131 are spaced apart in the length direction of the vent 111, and the plane where each filter screen 131 is located is inclined at a certain angle relative to the plane where the vent 111 is located; preferably, the multiple filter screens 131 are arranged in parallel in the length direction of the vent 111.

[0104] In addition, the ventilation device 1 also includes a closed mode; when the ventilation device 1 is in the closed mode, multiple air guide plates 121 are spliced ​​and combined in sequence to form a sealing structure, which can close the vent 111, and the filter 131 is in an expanded state and no air flows through it; wherein, relative to the air guide plate 121, the filter 131 is closer to the second ventilation end 1112; it effectively prevents dust or insects from entering the interior of the device. Compared with the traditional closing method of the air guide plate 121, this sealing structure significantly reduces the problem of insect entry caused by the assembly gap, and the sealing performance is better.

[0105] The ventilation device 1 includes an air inlet mode, an air outlet mode and a closed mode, and can be flexibly switched to the corresponding mode according to actual needs, thereby improving the ventilation flow and ventilation quality and meeting various ventilation needs.

[0106] The following describes the positional relationship between the air guide plates 121 and the filter screens 131. The rotation axis of each air guide plate 121 is arranged in parallel, and the rotation axis of each air guide plate 121 is arranged in parallel with the rotation axis of the corresponding filter screen 131.

[0107] The rotational axes of the air guide plates 121 and the corresponding filter screens 131 are offset in both the length and depth directions of the vent 111, and are not collinear. The sealing structure formed by the multiple air guide plates 121 and the filtering structure formed by the multiple filter screens 131 are combined to improve the sealing of the vent 111, effectively preventing insects and rodents from entering the vent 111, and improving the reliability and service life of the ventilation device 1.

[0108] The rotation axis of the air guide plate 121 is disposed close to the first ventilation end 1111 , and the rotation axis of the filter screen 131 is disposed close to the second ventilation end 1112 .

[0109] Furthermore, the length direction of the air deflector 121 is parallel to the width direction of the vent 111, and the width direction of the air deflector 121 is parallel to the length direction of the vent 111; the air deflector 121 includes an air deflector rotating end 1211 and an air deflector free end 1212 that are oppositely arranged in the width direction of the air deflector 121; the air deflector rotating end 1211 is rotatably arranged on the ventilation frame 11;

[0110] When the air guide plate 121 opens the vent 111, the free end 1212 of the air guide plate is away from the vent 111, and multiple air guide plates 121 are stacked; when the air guide plate 121 closes the vent 111, the free end 1212 of the air guide plate is close to the vent 111, and multiple air guide plates 121 are spliced ​​and combined in sequence to form a sealing structure.

[0111] The length direction of the filter screen 131 is parallel to the width direction of the vent 111, and the width direction of the filter screen 131 is parallel to the length direction of the vent 111. The multiple filter screens 131 and the multiple air guide plates 121 are arranged in a one-to-one correspondence. The filter screen 131 includes a filter screen rotating end 1313 and a filter screen free end 1314 arranged opposite to each other in the width direction of the filter screen 131. The filter screen rotating end 1313 is rotatably mounted on the ventilation frame 11.

[0112] When the filter screen 131 is in the unfolded state, the free end 1314 of the filter screen is close to the vent 111 ; when the filter screen 131 is in the stacked state, the free end 1314 of the filter screen is away from the vent 111 .

[0113] Specifically, the air deflector rotating end 1211 is provided with an air deflector rotating shaft 1213, and the air deflector rotating shaft 1213 is rotatably disposed on the ventilation frame 11; the filter rotating end 1313 is provided with a filter rotating shaft 1316, and the filter rotating shaft 1316 is rotatably disposed on the ventilation frame 11;

[0114] The filter 131 includes a filter support 1315 and a filter body 1317 detachably mounted on the filter support 1315 ; the filter body 1317 is easy to disassemble and install, and can be cleaned or replaced in time;

[0115] When multiple filters 131 are in a stacked state and stationary, the filter body 1317 can be removed from the filter bracket 1315, or the filter body 1317 can be installed on the filter bracket 1315; the filter 131 is convenient to disassemble and assemble, and the filter 131 can be cleaned or replaced in time, which shortens the time required and extends the service life of the filter 131.

[0116] The ventilation frame 11 includes two first ventilation frame side walls arranged opposite to each other in the width direction of the ventilation opening 111, and each first ventilation frame side wall is formed with N air guide plate shaft holes 112;

[0117] The following is a further explanation of the structure required for the rotation of the air guide plates 121. The N air guide plates 121 include a main air guide plate and N-1 secondary air guide plates. The main air guide plate and the N-1 secondary air guide plates are arranged in sequence along the length direction of the vent 111, and the length direction of the main air guide plate and the length direction of the secondary air guide plates are both parallel to the width direction of the vent 111; the air guide plate rotating end 1211 of the main air guide is provided with an air guide plate rotating shaft 1213 on both sides in the length direction of the main air guide, and the main air guide is rotatably arranged in two air guide plate shaft holes 112 arranged opposite to each other in the width direction of the vent 111 through the two air guide plate rotating shafts 1213; the air guide plate rotating end 1211 of each secondary air guide is provided with an air guide plate rotating shaft 1213 on both sides in the length direction of the secondary air guide, and each secondary air guide is rotatably arranged in two air guide plate shaft holes 112 arranged opposite to each other in the width direction of the vent 111 through the two air guide plate rotating shafts 1213;

[0118] The air guide module 12 also includes an air guide transmission mechanism 122 and an air guide motor 123, and the air guide transmission mechanism 122 and the air guide motor 123 are both arranged on one side of the outside of the ventilation frame 11 (preferably, the air guide transmission mechanism 122 and the air guide motor 123 are both arranged on the left side of the width direction of the vent 111); the air guide transmission mechanism 122 includes N air guide cranks 1221 and an air guide connecting rod 1222, and the N air guide cranks 1221 include a main air guide crank and N-1 secondary air guide cranks, and the main air guide cranks and the N-1 secondary air guide cranks are arranged in sequence along the length direction of the vent 111; the air guide The main crank and the main air guide plate are correspondingly arranged, and the N-1 air guide slave cranks and the N-1 air guide slave plates are correspondingly arranged one by one; the length direction of the air guide connecting rod 1222 is parallel to the length direction of the vent 111; one end of the air guide main crank and one end of each air guide slave crank are hingedly connected to the air guide connecting rod 1222, and the other end of the air guide main crank is connected to the air guide plate rotating shaft 1213 arranged on the main air guide plate on the same side as the air guide main crank, and is also connected to the output shaft of the air guide motor 123; the other end of the air guide slave crank is connected to the air guide plate rotating shaft 1213 arranged on the slave air guide plate on the same side as the air guide slave crank;

[0119] When the air guide motor 123 is running, the main air guide plate and the main air guide crank both rotate, the main air guide crank drives the air guide connecting rod 1222 to move, and the air guide connecting rod 1222 drives N-1 air guide slave cranks to rotate, and then N-1 slave air guide plates rotate;

[0120] The plurality of air guide plates 121 are driven to rotate by one air guide motor 123 , thereby reducing the number of motors and achieving higher control efficiency.

[0121] Each first ventilation frame side wall is formed with N filter axis holes 113; the structure required for the rotation of the filter 131 is further explained below, the N filters 131 include a main filter and N-1 slave filters, a main filter and N-1 slave filters are arranged in sequence along the length direction of the vent 111, and the length direction of the main filter and the length direction of the slave filter are parallel to the width direction of the vent 111; the filter bracket 1315 of the main filter includes a filter rotating end 1313 and a filter free end 1314 arranged relatively in the width direction of the filter bracket 1315, and the filter bracket 1315 of the slave filter includes a filter rotating end 1313 and a filter free end 1314 arranged relatively in the width direction of the filter bracket 1315. The filter rotating end 1313 and the filter free end 1314; the filter rotating end 1313 of the main filter is provided with a filter rotating shaft 1316 on both sides of the filter support 1315 in the length direction of the main filter, and the main filter is rotatably disposed in two filter shaft holes 113 arranged opposite to each other in the width direction of the vent 111 through the two filter rotating shafts 1316; the filter rotating end 1313 of each slave filter is provided with a filter rotating shaft 1316 on both sides of the filter support 1315 in the length direction of the slave filter, and each slave filter is rotatably disposed in two filter shaft holes 113 arranged opposite to each other in the width direction of the vent 111 through the two filter rotating shafts 1316;

[0122] The filter module 13 also includes a filter transmission mechanism 132 and a filter motor 133, and the filter transmission mechanism 132 and the filter motor 133 are both arranged on the other side of the outside of the ventilation frame 11 (preferably, the filter transmission mechanism 132 and the filter motor 133 are both arranged on the right side of the width direction of the vent 111), and the filter transmission mechanism 132 and the air guide transmission mechanism 122 are arranged relative to each other in the width direction of the vent 111, and the filter motor 133 and the air guide motor 123 are arranged relative to each other in the width direction of the vent 111; the filter transmission mechanism 132 includes N filter cranks 1321 and a filter connecting rod 1322, and the N filter cranks 1321 include a filter main crank and N-1 filter slave cranks. The crank, the main filter crank and N-1 slave filter cranks are arranged in sequence along the length direction of the vent 111; the main filter crank and the main filter are arranged correspondingly, and the N-1 slave filter cranks and the N-1 slave filter are arranged one by one in a one-to-one correspondence; the length direction of the filter connecting rod 1322 is parallel to the length direction of the vent 111; one end of the main filter crank and one end of each slave filter crank are hinged to the filter connecting rod 1322, and the other end of the main filter crank is connected to the filter rotating shaft 1316 set on the main filter screen on the same side as the main filter crank, and is also connected to the output shaft of the filter motor 133; the other end of the slave filter crank is connected to the filter rotating shaft 1316 set on the slave filter screen on the same side as the slave filter crank;

[0123] When the filter motor 133 is running, the main filter screen and the filter main crank both rotate, the filter main crank drives the filter connecting rod 1322 to move, and the filter connecting rod 1322 drives N-1 filter slave cranks to rotate, and then the N-1 slave filters rotate;

[0124] A plurality of filter screens 131 are driven to rotate by one filter motor 133 , thereby reducing the number of motors and achieving higher control efficiency.

[0125] <Cabinet-type air conditioner indoor unit>

[0126] like Figure 7 As shown, this embodiment provides a cabinet-type air-conditioning indoor unit 2, including a casing 21 and a ventilation device 1 as described above; an upper air outlet 22 is formed on the upper side of the casing 21, and a lower air outlet 23 is formed on the lower side of the casing 21; the ventilation device 1 is provided at the upper air outlet 22 and / or the lower air outlet 23; an air duct is formed inside the casing 21, the air duct connects the upper air outlet 22 and the lower air outlet 23, and a fan is provided in the air duct; the first ventilation end 1111 is the end close to the room, and the second ventilation end 1112 is the end close to the air duct.

[0127] The filter screens 131 at the upwind outlet 22 and the filter screens 131 at the downwind outlet 23 are easy to assemble and disassemble, and can be cleaned in a timely manner, or can be easily replaced with filters 131 of different filtration efficiencies (such as formaldehyde removal filters, PM2.5 removal filters, etc.);

[0128] Furthermore, the cabinet air conditioner indoor unit 2 is provided with a bottom air inlet and top air outlet mode and a top air inlet and bottom air outlet mode;

[0129] When the cabinet air conditioner indoor unit 2 is in the downwind air intake and upwind air outlet mode, the ventilation device 1 at the downwind outlet 23 is in the air intake mode, and the ventilation device 1 at the upwind outlet 22 is in the air outlet mode. The cabinet air conditioner indoor unit 2 takes in air from the downwind outlet 23 and discharges air from the upwind outlet 22; dust on the filter screen 131 at the upwind outlet 22 is prevented from being brought into the room when the upwind outlet 22 discharges air.

[0130] When the cabinet air conditioner indoor unit 2 is in the upper air inlet and lower air outlet mode, the ventilation device 1 at the upper air outlet 22 is in the air inlet mode, and the ventilation device 1 at the lower air outlet 23 is in the air outlet mode. The cabinet air conditioner indoor unit 2 takes in air from the upper air outlet 22 and exhausts air from the lower air outlet 23; avoid bringing dust on the filter 131 at the lower air outlet 23 into the room when the lower air outlet 23 is out of the air.

[0131] Preferably, an upper air outlet 22 is formed on the top of the casing 21 , and a lower air outlet 23 is formed on the lower end of the front wall of the casing 21 .

[0132] According to the up-and-down reversible air outlet mode of the cabinet air-conditioning indoor unit 2, the mode of the ventilation device 1 is flexibly switched to improve the ventilation flow rate and ventilation quality to meet various ventilation needs.

[0133] When the cabinet air conditioner is in cooling mode, the cabinet air conditioner indoor unit 2 can operate in a bottom-inlet and top-outlet mode; when the cabinet air conditioner is in heating mode, the cabinet air conditioner indoor unit 2 can operate in a top-inlet and bottom-outlet mode.

[0134] Specifically, when the ventilation device 1 is provided at the upper air port 22, the vent 111 is connected to the upper air port 22, the length direction of the vent 111 is parallel to the front-to-back direction of the housing 21, the width direction of the vent 111 is parallel to the left-right direction of the housing 21, and the depth direction of the vent 111 is parallel to the up-down direction of the housing 21;

[0135] When the ventilation device 1 is provided at the downwind port 23, the length direction of the vent 111 is parallel to the left-right direction of the housing 21, the width direction of the vent 111 is parallel to the up-down direction of the housing 21, and the depth direction of the vent 111 is parallel to the front-back direction of the housing 21;

[0136] The air outlet mode includes the guide air outlet mode and the sweep air outlet mode;

[0137] When the ventilation device 1 at the upper air outlet 22 is in the air sweeping mode, the air guide plate 121 and the filter 131 at the upper air outlet 22 swing synchronously along the front-to-back direction of the housing 21, thereby sweeping air along the front-to-back direction of the housing 21, thereby achieving forward air supply and waterfall-style cooling;

[0138] When the ventilation device 1 at the downwind outlet 23 is in the wind sweeping outlet mode, the air guide plate 121 and the filter screen 131 at the downwind outlet 23 swing synchronously along the left and right directions of the casing 21 to achieve wind sweeping along the left and right directions of the casing 21, thereby achieving better heating uniformity and fan-shaped heating.

[0139] <Control method>

[0140] This embodiment provides a control method for a cabinet-type air conditioner indoor unit 2. The cabinet-type air conditioner indoor unit 2 is any of the cabinet-type air conditioner indoor units 2 described above. The plurality of filters 131 include a first filter, a second filter, a third filter, ..., an Nth filter, and an N+1th filter, arranged in sequence along the length direction of the vent 111. The control method includes a method for determining whether the filters are dirty. The method includes:

[0141] According to the arrangement order of the multiple filters 131, the multiple filters 131 are sequentially placed in an unfolded state;

[0142] Before the Nth filter is deployed, obtain the fan power P N-1 ; After the Nth filter is deployed, obtain the fan power P N ;

[0143] According to the power P N-1 and power P NDetermine the dirtiness of the Nth filter;

[0144] Wherein, N is a positive integer, and N≥2.

[0145] Furthermore, according to the power P N-1 and power P N Determining the contamination of the Nth filter includes:

[0146] Calculate power P N-1 and power P N The power difference;

[0147] Compare the power difference with the preset value;

[0148] When the power difference is greater than or equal to a preset value, it is determined that the Nth filter is seriously dirty and needs to be cleaned or replaced, or the Nth filter is placed in a stacked state; the filter 131 is rotatable, and the filter body 1317 is detachably mounted on the filter bracket 1315, thereby improving the efficiency of cleaning and replacing the filter 131;

[0149] When the power difference is less than a preset value, it is determined that the Nth filter is not seriously dirty and does not need to be cleaned or replaced.

[0150] In this way, before and after the Nth filter is deployed, the fan power P is obtained respectively. N-1 and power P N , according to the power P N-1 and power P N The dirtiness of the Nth filter is determined, the dirtiness of the filter 131 is detected, and the intelligence level and operation energy efficiency of the cabinet air conditioner indoor unit 2 are improved.

[0151] Specifically, the plurality of filters 131 include a first filter, a second filter, a third filter, a fourth filter, and a fifth filter arranged in sequence along the length of the vent 111; when the first filter is in an unfolded state, the fan power P1 is recorded; when the second filter is in an unfolded state, the fan power P2 is recorded; the power difference between the power P1 and the power P2 is calculated, and the power difference is compared with a preset value; when the power difference is greater than or equal to the preset value, it is determined that the second filter is seriously dirty and needs to be cleaned or replaced; when the power difference is less than the preset value, it is determined that the second filter is not seriously dirty and does not need to be cleaned or replaced;

[0152] Similarly, the dirtiness of the 3rd filter, the 4th filter and the 5th filter is determined in turn; if a filter 131 is seriously dirty and blocked, the plane where the filter 131 is located is tilted relative to the plane where the vent 111 is located to reduce the impact of the filter 131 on the incoming air flow.

[0153] In addition, the control method also includes an indoor unit noise reduction control method and an air intake flow control method. The indoor unit noise reduction control method includes:

[0154] Get the current temperature of the indoor air;

[0155] Calculate the temperature difference between the current temperature and the preset temperature;

[0156] Determine whether the temperature difference is within a preset range;

[0157] When the temperature difference is within a preset range, part of the multiple filters 131 are placed in a stacked state and / or the fan speed is reduced; according to the humidity of the indoor air, the state of the filter 131 and the fan speed are adjusted to reduce the noise during operation of the indoor unit, thereby improving the intelligence level and operating energy efficiency of the cabinet air-conditioning indoor unit 2; for example, at night or when the user sets the silent mode, part of the multiple filters 131 can be placed in a stacked state and / or the fan speed can be reduced to reduce the noise of the cabinet indoor unit.

[0158] Inlet air flow control methods include:

[0159] Get the current turbidity of indoor air;

[0160] Compare the current turbidity with the preset turbidity;

[0161] When the current turbidity is less than the preset turbidity, multiple filters 131 are placed in a stacked state; according to the turbidity of the indoor air, the state of the filter 131 is adjusted, taking into account the air intake quality and air outlet flow rate, thereby improving the intelligence level and operating energy efficiency of the cabinet air-conditioning indoor unit 2; for example, when the indoor air quality is good and no filtering is required, some filters 131 can be placed in a stacked state to increase the air intake flow rate and reduce energy consumption.

[0162] In summary, the present invention optimizes the structure and arrangement of each component in the ventilation device 1, takes into account the air intake quality and air outlet flow rate, and improves the filtering effect through the filtering structure formed by multiple filter screens 131; the sealing effect is improved by the sealing structure formed by multiple air guide plates 121, combined with the offset setting of the rotation axis of the air guide plate 121 and the rotation axis of the filter screen 131; the filter screen 131 is rotatably set on the ventilation frame 11, and the filter screen body 1317 and the filter screen bracket 1315 are detachable, which is convenient for disassembly and assembly of the filter screen body 1317, and timely cleaning and replacement of the filter screen body 1317; an air guide motor 123 drives multiple air guide plates 121 to rotate, and a filter motor 133 drives multiple filters 131 to rotate, thereby simplifying the structure of the ventilation device 1 and reducing the occupied space of the ventilation device 1, thereby reducing costs. According to the cooling and heating modes of the cabinet air conditioner, the ventilation device 1 at the air inlet vent 111 is in the air inlet mode, and the ventilation device 1 at the air outlet vent 111 is in the air outlet mode, so as to improve the cooling and heating effects, and overall solve the problem that the filter 131 of the cabinet air conditioner with reversible air outlet cannot take into account both the air inlet quality and the air outlet flow rate, and ensure the reliability and comfort of the cabinet air conditioner.

[0163] Example 2

[0164] Different from Example 1, Figures 6a to 6c As shown, in this embodiment, the length direction of the filter screen 131 is parallel to the width direction of the vent 111. The multiple filter screens 131 include multiple first filter screens 1311 and multiple second filter screens 1312. The multiple first filter screens 1311 and the multiple second filter screens 1312 are alternately arranged in the length direction of the vent 111; the width of the first filter screen 1311 is greater than the width of the second filter screen 1312; the first filter screen 1311 and the air guide plate 121 are arranged in a one-to-one correspondence, and the second filter screen 1312 and the air guide plate 121 are arranged in a one-to-one correspondence;

[0165] The first filter 1311 includes two filter free ends 1314 disposed opposite to each other in the width direction of the first filter 1311 and a bracket rotating portion disposed between the two filter free ends 1314; the bracket rotating portion is rotatably disposed on the ventilation frame 11;

[0166] The second filter 1312 includes a filter rotating end 1313 and a filter free end 1314 that are disposed opposite to each other in the width direction of the second filter 1312 ; the filter rotating end 1313 is rotatably disposed on the ventilation frame 11 ;

[0167] When the filter screen 131 is in the unfolded state, the free end 1314 of the filter screen is close to the vent 111 ; when the filter screen 131 is in the stacked state, the free end 1314 of the filter screen is away from the vent 111 .

[0168] Furthermore, when the filter screen 131 is in the expanded state, a plurality of first filter screens 1311 and a plurality of second filter screens 1312 are sequentially spliced ​​and combined to form a filter structure; wherein the filter surface of each first filter screen 1311 and each second filter screen 1312 are inclined relative to the plane where the vent 111 is located as a whole; while ensuring the sealing effect, the filter area of ​​the filter screen 131 is increased, the filtering effect is improved, and it is applicable to vents 111 of different sizes; preferably, the filter structure formed by the combination of the plurality of first filter screens 1311 and the plurality of second filter screens 1312 is zigzag-shaped;

[0169] When the required filtering area of ​​the vent 111 is large, multiple first filter screens 1311 and multiple second filter screens 1312 can be spliced ​​and combined in sequence to form a zigzag filtering structure; the filtering area of ​​the filter screen 131 is increased, wherein the filtering area is related to the inclination angle of the first filter screen 1311 and the second filter screen 1312.

[0170] Specifically, the rotation direction of the first filter 1311 is opposite to that of the second filter 1312, achieving an overlap between the first filter 1311 and the second filter 1312, thereby achieving a better sealing effect. In this case, the number of filters 131 can be adjusted according to the size of the vent 111 or the size of the filter 131. This filter 131 structure occupies less space, improves space utilization, and has good versatility.

[0171] The first filter 1311 and the second filter 1312 are arranged obliquely, and the area of ​​the first filter 1311 is larger than that of the second filter 1312 , thereby increasing the overall filtering area of ​​the filter 131 .

[0172] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A ventilation device, characterized in that: include: A ventilation frame (11) is formed with a ventilation opening (111); the ventilation opening (111) comprises a first ventilation end (1111) and a second ventilation end (1112) arranged opposite to each other in a depth direction of the ventilation opening (111); An air guide module (12) and a filter module (13), wherein the air guide module (12) comprises a plurality of air guide plates (121), and the filter module (13) comprises a plurality of filter screens (131); the plurality of air guide plates (121) and the plurality of filter screens (131) are sequentially arranged along the length direction of the vent (111), and each of the air guide plates (121) and each of the filter screens (131) can be rotatably arranged at the vent (111); the rotation axis of each of the air guide plates (121) is arranged in parallel, and the rotation axis of each of the air guide plates (121) and the rotation axis of the corresponding filter screen (131) are arranged in parallel; the rotation axis of the air guide plates (121) and the rotation axis of the corresponding filter screen (131) are offset in both the length direction and the depth direction of the vent (111); The ventilation device (1) has an air inlet mode and an air outlet mode; When the ventilation device (1) is in the air intake mode, the air guide plate (121) is in a state of opening the vent (111), and the vent (111) can take in air from the first ventilation end (1111) to the second ventilation end (1112); the filter (131) is in an unfolded state and can filter the air flowing through; When the ventilation device (1) is in the air outlet mode, the air guide plate (121) is in a state of opening the vent (111), and the vent (111) can discharge air from the second ventilation end (1112) to the first ventilation end (1111); and the plurality of filter screens (131) are in a stacked state.

2. The ventilation device according to claim 1, characterized in that The air outlet mode includes a guide air outlet mode and a sweep air outlet mode; When the ventilation device (1) is in the air guide and outlet mode, the air guide plate (121) and the filter screen (131) are both stationary; When the ventilation device (1) is in the air sweeping and outlet mode, the air guide plate (121) and the filter screen (131) swing synchronously to sweep the air passing through.

3. The ventilation device according to claim 2, characterized in that When the air guide plates (121) are in a state of opening the vent (111), the plane on which the entire air guide plates (121) are located is tilted relative to the plane on which the entire vent (111) is located; When the filter screen (131) is in the unfolded state, a plurality of the filter screens (131) are sequentially spliced ​​and combined to form a filter structure, and the filter structure can cover the vent (111); When the air guide plate (121) and the filter screen (131) are in a synchronous swinging state, each air guide plate (121) and the corresponding filter screen (131) are combined to form an air sweeping structure, and the air sweeping structure as a whole swings relative to the vent (111).

4. The ventilation device according to claim 2, characterized in that The ventilation device (1) further includes a closed mode; when the ventilation device (1) is in the closed mode, a plurality of the air guide plates (121) are sequentially spliced ​​and combined to form a sealing structure, the sealing structure can close the vent (111), and the filter (131) is in an expanded state and does not flow through the air; Wherein, relative to the air guide plate (121), the filter screen (131) is closer to the second ventilation end (1112).

5. The ventilation device according to claim 2, characterized in that The rotation axis of the air guide plate (121) is arranged close to the first ventilation end (1111), and the rotation axis of the filter screen (131) is arranged close to the second ventilation end (1112).

6. The ventilation device according to claim 5, characterized in that The length direction of the air guide plate (121) is parallel to the width direction of the vent (111); the air guide plate (121) comprises an air guide plate rotating end (1211) and an air guide plate free end (1212) arranged opposite to each other in the width direction of the air guide plate (121); the air guide plate rotating end (1211) is rotatably arranged on the ventilation frame (11); When the air guide plate (121) opens the vent (111), the free end (1212) of the air guide plate is away from the vent (111); when the air guide plate (121) closes the vent (111), the free end (1212) of the air guide plate is close to the vent (111).

7. The ventilation device according to claim 5, characterized in that The filter screen (131) includes a filter screen support (1315) and a filter screen body (1317) detachably arranged on the filter screen support (1315); When the plurality of filters (131) are in the stacked state and stationary, the filter body (1317) can be removed by the filter support (1315), or the filter body (1317) can be installed on the filter support (1315).

8. The ventilation device according to claim 5, characterized in that The length direction of the filter screen (131) is parallel to the width direction of the vent (111), and a plurality of the filter screens (131) and a plurality of the air guide plates (121) are arranged in a one-to-one correspondence; the filter screen (131) comprises a filter screen rotating end (1313) and a filter screen free end (1314) arranged opposite to each other in the width direction of the filter screen (131); the filter screen rotating end (1313) is rotatably arranged on the ventilation frame (11); When the filter screen (131) is in the unfolded state, the free end (1314) of the filter screen is close to the vent (111); when the filter screen (131) is in the stacked state, the free end (1314) of the filter screen is away from the vent (111).

9. The ventilation device according to claim 5, characterized in that The length direction of the filter screen (131) is parallel to the width direction of the vent (111); the plurality of filter screens (131) include a plurality of first filter screens (1311) and a plurality of second filter screens (1312); the plurality of first filter screens (1311) and the plurality of second filter screens (1312) are alternately arranged in the length direction of the vent (111); the width of the first filter screen (1311) is greater than the width of the second filter screen (1312); the first filter screen (1311) and the air guide plate (121) are arranged in a one-to-one correspondence, and the second filter screen (1312) and the air guide plate (121) are arranged in a one-to-one correspondence; The first filter screen (1311) comprises two filter screen free ends (1314) arranged opposite to each other in the width direction of the first filter screen (1311) and a bracket rotating portion arranged between the two filter screen free ends (1314); the bracket rotating portion is rotatably arranged on the ventilation frame (11); The second filter screen (1312) comprises a filter screen rotating end (1313) and a filter screen free end (1314) arranged opposite to each other in the width direction of the second filter screen (1312); the filter screen rotating end (1313) is rotatably arranged on the ventilation frame (11); When the filter screen (131) is in the unfolded state, the free end (1314) of the filter screen is close to the vent (111); when the filter screen (131) is in the stacked state, the free end (1314) of the filter screen is away from the vent (111).

10. The ventilation device according to claim 9, characterized in that When the filter screen (131) is in the expanded state, a plurality of the first filter screens (1311) and a plurality of the second filter screens (1312) are sequentially spliced ​​and combined to form a filter structure; Wherein, the filtering surface of each first filter screen (1311) and each second filter screen (1312) are arranged to be inclined relative to the plane where the entire vent (111) is located.

11. A cabinet-type air-conditioning indoor unit (2), characterized in that: The invention comprises a housing (21) and a ventilation device (1) according to any one of claims 1 to 10; an upper air outlet (22) is formed on the upper side of the housing (21), and a lower air outlet (23) is formed on the lower side of the housing (21); the ventilation device (1) is provided at the upper air outlet (22) and / or the lower air outlet (23); an air duct is formed inside the housing (21), the air duct connects the upper air outlet (22) and the lower air outlet (23), and a fan is provided in the air duct.

12. The cabinet-type air-conditioning indoor unit according to claim 11, characterized in that: The cabinet-type air-conditioning indoor unit (2) is provided with a bottom air inlet and top air outlet mode and a top air inlet and bottom air outlet mode; When the cabinet-type air-conditioning indoor unit (2) is in the lower air intake and upper air outlet mode, the ventilation device (1) at the lower air outlet (23) is in the air intake mode, and the ventilation device (1) at the upper air outlet (22) is in the air outlet mode, and the cabinet-type air-conditioning indoor unit (2) takes in air from the lower air outlet (23) and discharges air from the upper air outlet (22); When the cabinet-type air-conditioning indoor unit (2) is in the upper air intake and lower air outlet mode, the ventilation device (1) at the upper air outlet (22) is in the air intake mode, and the ventilation device (1) at the lower air outlet (23) is in the air outlet mode. The cabinet-type air-conditioning indoor unit (2) takes in air from the upper air outlet (22) and discharges air from the lower air outlet (23).

13. The cabinet-type air-conditioning indoor unit according to claim 12, characterized in that: The air outlet mode includes a guide air outlet mode and a sweep air outlet mode; When the ventilation device (1) at the upper air outlet (22) is in the air sweeping and outlet mode, the air guide plate (121) and the filter screen (131) at the upper air outlet (22) swing synchronously along the front-rear direction of the housing (21); When the ventilation device (1) at the downwind port (23) is in the air sweeping and outlet mode, the air guide plate (121) and the filter screen (131) at the downwind port (23) swing synchronously in the left-right direction of the casing (21).

14. A control method for a cabinet air conditioner indoor unit, characterized in that: The cabinet air-conditioning indoor unit (2) is the cabinet air-conditioning indoor unit (2) according to any one of claims 11 to 13, wherein the plurality of filters (131) include a first filter, a second filter, a third filter, ... an Nth filter, and an N+1th filter arranged in sequence along the length direction of the vent (111); and the control method includes a method for determining whether the filter is dirty, and the method for determining whether the filter is dirty includes: According to the arrangement order of the plurality of filter screens (131), the plurality of filter screens (131) are sequentially placed in an unfolded state; Before the Nth filter is deployed, the power P of the fan is obtained. N-1 After the Nth filter is deployed, the power P of the fan is obtained N ; According to the power P N-1 and power P N Determining a dirtiness of the Nth filter; Wherein, N is a positive integer, and N≥2.

15. The control method of the indoor unit of the cabinet air conditioner according to claim 14, characterized in that: According to the power P N-1 and power P N Determining the dirtiness of the Nth filter includes: Calculate the power P N-1 and power P N The power difference; comparing the power difference with a preset value; When the power difference is greater than or equal to the preset value, it is determined that the Nth filter is seriously dirty and needs to be cleaned or replaced; When the power difference is less than the preset value, it is determined that the Nth filter is not seriously dirty and does not need to be cleaned or replaced.

16. The control method of the indoor unit of the cabinet air conditioner according to claim 14, characterized in that: The control method further includes an indoor unit noise reduction control method, and the indoor unit noise reduction control method includes: Get the current temperature of the indoor air; Calculating the temperature difference between the current temperature and a preset temperature; Determining whether the temperature difference is within a preset range; When the temperature difference is within the preset interval, part of the plurality of filter screens (131) is placed in the stacked state and / or the rotation speed of the fan is reduced.

17. The control method of the indoor unit of a cabinet air conditioner according to claim 14, characterized in that: The control method further includes an air inlet flow control method, and the air inlet flow control method includes: Get the current turbidity of indoor air; comparing the current turbidity with a preset turbidity; When the current turbidity is less than the preset turbidity, the plurality of filter screens (131) are all in a stacked state.

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