Indoor unit and air conditioner

Abstract

The present application relates to the technical field of heat pump, and provides an indoor unit and an air conditioner. The indoor unit of the present application comprises an indoor unit main body and a blockage detection device. The indoor unit main body comprises an indoor unit shell, a filter screen and an indoor fan. The indoor unit shell has an air inlet, the filter screen cover is arranged at the air inlet, and the indoor fan is arranged in the indoor unit shell. The blockage detection device is connected to the filter screen and is used for detecting the force received by the filter screen in the air inlet direction when the indoor fan is turned on. Compared with the prior art, the present application does not determine the blockage result of the filter screen according to the rotating speed of the indoor fan or the airflow in the air duct, so that the misjudgment of the blockage result caused by the prior art can be avoided, and the technical problem of inaccurate blockage result judgment of the filter screen in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump, in particular to an indoor unit and air conditioner. BACKGROUND

[0002] The air conditioner generally comprises an indoor unit and an outdoor unit, the indoor unit (for example, a cabinet machine or a hanging machine) has a filter screen, the filter screen is used for preventing dust and other substances in the air from entering the indoor unit, with the use of the air conditioner, if the filter screen is not replaced or cleaned, the filter screen will be blocked, if the filter screen is blocked, the air inlet of the indoor unit and the health of the user will be affected.

[0003] The prior art mainly has two ways to judge whether the filter screen is blocked, the first way is to collect the rotating speed feedback signal of the indoor fan, then calculate the frequency of the rotating speed feedback signal, and compare the frequency with the preset frequency of the indoor fan, finally judge the blockage of the air conditioner filter screen through the comparison result; the second way is to set a rotating part in the air duct of the indoor unit, in the state that the indoor fan is turned on, the airflow in the air duct will make the rotating part rotate, when the rotating part rotates to a first rotating position, the switch of the trigger contact is closed, in the state that the switch is closed, the trigger warning module will be blocked and a warning reminder will be given.

[0004] However, for the first way, if the indoor fan fails or the running current of the indoor fan is unstable, the rotating speed of the indoor fan will be affected, thereby causing misjudgment of the blockage result; for the second way, if only a small part of the filter screen is blocked and the rotating part is just located near the small part of the filter screen, the position of the rotating part will be affected, thereby causing misjudgment of the blockage result. SUMMARY

[0005] The present application provides an indoor unit and air conditioner to solve the technical problem of inaccurate blockage result of the filter screen in the prior art.

[0006] The present application provides an indoor unit, comprising: an indoor unit body comprising an indoor unit shell, a filter screen and an indoor fan, the indoor unit shell has an air inlet, the filter screen is arranged at the air inlet, and the indoor fan is arranged in the indoor unit shell; a blockage detection device connected to the filter screen, used for detecting the force received by the filter screen in the air inlet direction in the state that the indoor fan is turned on.

[0007] According to one embodiment of the present application, the blockage detection device comprises: a bracket located in the indoor unit shell and movably connected to the indoor unit shell, the bracket can move in the state that the indoor fan is turned on, and the filter screen is arranged on the bracket; a reset unit connected to the indoor unit shell and the bracket, used for resetting the bracket in the state that the indoor fan is turned off.

[0008] According to one embodiment of the present application, the bracket is rotatably connected to the indoor machine housing, and the bracket is movable from the filter screen permeable position to the filter screen blocked position when the indoor fan is turned on.

[0009] According to one embodiment of the present application, the bracket comprises a bracket body and a rotating shaft, the bracket body is rotatably connected to the indoor machine housing through the rotating shaft, the filter screen is arranged on the bracket body, and the reset unit is a torsion spring, which is sleeved on the rotating shaft, one end of the torsion spring is connected to the indoor machine housing, and the other end of the torsion spring is connected to the bracket.

[0010] According to one embodiment of the present application, the blocked warning device is further connected to the bracket and is used to give a warning according to the blocking condition of the filter screen.

[0011] According to one embodiment of the present application, the blocked warning device comprises a driving unit and a warning unit, the driving unit is connected to the bracket, the bracket is used to drive the driving unit to rotate when the indoor fan is turned on, and the driving unit is used to connect the warning unit when the bracket is located at the filter screen blocked position, so as to give a blocked warning through the warning unit.

[0012] According to one embodiment of the present application, the driving unit comprises a first gear, a second gear and a driving rod, the first gear and the second gear are rotatably connected to the indoor machine housing, the rotating shafts of the first gear and the second gear are in the same direction as the rotating shaft of the bracket, the bracket is provided with a driving tooth, the driving tooth is engaged with the second gear through the first gear, the driving rod is connected to the second gear, and the driving rod is used to connect the warning unit when the bracket is located at the filter screen blocked position, so as to give a blocked warning through the warning unit.

[0013] According to one embodiment of the present application, the warning unit comprises a power supply and a first light source, a first pole of the power supply is electrically connected to the driving rod, and the power supply and the first light source form a closed loop when the bracket is located at the filter screen permeable position, so as to make the first light source emit light.

[0014] According to one embodiment of the present application, the warning unit further comprises a blocked contact component, an arc-shaped resistance plate, a second light source, a third light source and a relay, the arc-shaped resistance plate comprises an insulating section and a conductive section which are connected in sequence, the power supply has a first pole and a second pole, the first pole is electrically connected to a first contact of the relay, and is electrically connected to a second contact of the relay through the driving rod and the first light source in sequence, the second pole is electrically connected to the first pole through the second light source and a coil of the relay in sequence, the second pole is connected to the blocked contact component through the third light source, and the second pole is connected to the second contact of the relay through the first light source, the coil is electrically connected to the conductive section, the driving rod is provided as a conductive structure, and the driving rod has a first state, in the first state, the bracket is located at the filter screen permeable position, a free end of the driving rod contacts the insulating section, so as to make the first light source emit light.

[0015] According to one embodiment of the present application, the driving rod further has a second state and a third state; in the second state, the bracket is located at the filter screen clogging position, the free end of the driving rod contacts the conductive section, so as to make the second light source emit light; in the third state, the bracket is located at the filter screen clogging position, the free end of the driving rod contacts the free end of the conductive section, and the driving rod is electrically connected with the clogging contact component, so as to make the third light source emit light.

[0016] The present application further provides an air conditioner, comprising: the indoor unit of the above embodiment; and an outdoor unit connected with the indoor unit.

[0017] The indoor unit and the air conditioner of the present application have the following characteristics and advantages:

[0018] According to the analysis, in the state that the indoor fan is started, if the filter screen is clogged, the mesh of the filter screen will be blocked, so as to increase the contact area of the filter screen with the airflow, and further increase the force received by the filter screen along the air inlet direction. The force received by the filter screen along the air inlet direction can be detected by the clogging detection device, so as to determine the clogging result of the filter screen according to the force. That is, whether the filter screen is clogged can be determined by the clogging detection device. If the filter screen is clogged, the force will be greater. Compared with the prior art, the clogging result of the filter screen is not determined according to the rotating speed of the indoor fan or the airflow in the air duct. Therefore, the misjudgment of the clogging result caused by the prior art can be avoided, and the technical problem of inaccurate determination of the clogging result of the filter screen in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic view of the indoor unit of the present application.

[0021] Figure 2 is Figure 1 is an enlarged view of part A in FIG.

[0022] Figure 3 is a schematic view of the driving unit of the present application.

[0023] Figure 4 is Figure 1 is an enlarged view of part B in FIG.

[0024] Figure 5 is a schematic view of the bracket of the present application.

[0025] Figure 6 is a schematic view of the warning unit of the present application.

[0026] Figure 7 is another schematic view of the warning unit of the present application.

[0027] Figure 8 is another schematic view of the warning unit of the present application.

[0028] Figure 9 is another schematic view of the warning unit of the present application.

[0029] Reference signs:

[0030] 100, main body of the inner machine; 110, casing of the inner machine; 111, air inlet; 120, filter screen; 200, clogging detection device; 210, bracket; 211, bracket body; 2111, driving tooth; 2112, slot; 212, rotating shaft; 220, reset unit; 300, clogging warning device; 310, driving unit; 311, first gear; 312, second gear; 313, driving rod; 314, conductive rod; 315, conductive spring; 316, conductive contact ball; 320, warning unit; 321, power supply; 3211, first pole; 3212, second pole; 322, clogging contact component; 323, first light source; 324, arc-shaped resistance plate; 3241, insulating section; 3242, conductive section; 325, second light source; 326, third light source; 327, relay; 3271, coil; 400, rotating cover; 500, locking device; 510, fixed buckle; 520, rotating hook; 530, first spring; 540, pressing rod; 600, filter screen fixing device; 610, sliding rod; 620, pushing rod; 630, fixed block; 640, second spring. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the present embodiments, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended for convenience of description of the present embodiments and simplification of the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present embodiments.

[0033] In addition, the terms "first", "second", "third", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present embodiments, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0034] In the present embodiments, unless otherwise explicitly specified and limited, the terms "arranged", "mounted", "connected", "linked", "fixed", and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be an internal communication or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present embodiments can be understood according to the specific circumstances.

[0035] In the present embodiments, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or can only mean that the horizontal height of the first feature is less than that of the second feature.

[0036] Figures 1 to 9The indoor unit (for example, a hanging unit) and the air conditioner provided by the present application are shown in the drawings. The indoor unit of the present application comprises an indoor unit body 100 and a blockage detection device 200. The indoor unit body 100 comprises an indoor unit shell 110, a filter screen 120 and an indoor fan. The indoor unit shell 110 has an air inlet 111 which can be located at the top end of the indoor unit shell 110. The filter screen 120 is arranged on the air inlet 111. The indoor fan is arranged in the indoor unit shell 110. The blockage detection device 200 is connected to the filter screen 120 and is used to detect the force received by the filter screen 120 in the air inlet direction when the indoor fan is turned on.

[0037] In the specific implementation, when the indoor fan is turned on, if the filter screen 120 is blocked, the mesh of the filter screen 120 will be blocked, thereby increasing the contact area of the filter screen 120 with the airflow, and further increasing the force received by the filter screen 120 in the air inlet direction. The force received by the filter screen 120 in the air inlet direction can be detected by the blockage detection device 200, thereby determining the blockage result of the filter screen 120. That is, whether the filter screen 120 is blocked can be determined by the blockage detection device 200. If the filter screen 120 is blocked, the force will be greater. Compared with the prior art, the blockage result of the filter screen 120 is not determined according to the rotation speed of the indoor fan or the airflow in the air duct. Therefore, the misjudgment of the blockage result caused by the prior art can be avoided, and the technical problem of inaccurate determination of the blockage result of the filter screen 120 in the prior art is solved.

[0038] As shown in Figure 1 and Figure 2 , according to one embodiment of the present application, the blockage detection device 200 can comprise a bracket 210 and a reset unit 220. The bracket 210 is located in the indoor unit shell 110 and is movably connected to the indoor unit shell 110. The bracket can move when the indoor fan is turned on. The filter screen 120 is arranged on the bracket 210. The reset unit 220 is connected to the indoor unit shell 110 and the bracket 210 and is used to reset the bracket 210 when the indoor fan is turned off.

[0039] In the specific implementation, the bracket 210 can support the filter screen 120 and provide a support basis for the filter screen 120. The bracket 210 is movably connected to the indoor unit shell 110. When the filter screen 120 is blocked, the filter screen 120 will move together with the bracket 210. Whether the filter screen 120 is blocked can be determined by comparing the positions of the bracket 210 before and after movement, that is, by comparing the position of the bracket 210 when the indoor fan is turned on and the position of the bracket 210 when the indoor fan is turned off. This is simple and intuitive. It can be understood that the more blocked the filter screen 120 is, the greater the difference between the positions of the bracket 210 before and after movement will be.

[0040] As shown in Figure 1 , Figure 2 and Figure 5As shown, according to one embodiment of the present application, the bracket 210 is rotatably connected to the indoor unit housing 110, and the bracket 210 is movable from the filter screen permeable position to the filter screen blocked position in the state that the indoor fan is turned on.

[0041] In particular implementation, in the state that the indoor fan is turned on, the bracket 210 has multiple positions, such as the filter screen permeable position and the filter screen blocked position, and if the filter screen 120 is not blocked, the bracket 210 is located at the filter screen permeable position, and if the filter screen 120 is blocked, the bracket 210 is located at the filter screen blocked position.

[0042] As shown in Figure 1 , Figure 2 and Figure 5 , in the embodiment, the bracket 210 can include a bracket body 211 and a rotating shaft 212, the bracket body 211 is rotatably connected to the indoor unit housing 110 through the rotating shaft 212; the filter screen 120 is arranged on the bracket body 211; and the reset unit 220 is a torsion spring, which is sleeved on the rotating shaft 212, one end of the torsion spring is connected to the indoor unit housing 110, and the other end of the torsion spring is connected to the bracket 210.

[0043] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 , according to one embodiment of the present application, the indoor unit of the present application can further include a blocking warning device 300 connected to the bracket 210, for issuing a warning according to the blocking condition of the filter screen 120.

[0044] In particular implementation, since the bracket 210 is installed in the indoor unit housing 110, if it is needed to determine whether the filter screen 120 is blocked, people need to observe the position of the bracket 210 through the indoor unit housing 110 to determine whether the filter screen 120 is blocked; through the above structure, people can be reminded of whether the filter screen 120 is blocked, thereby facilitating people to maintain, without the need for people to observe the position of the bracket 210 through the indoor unit housing 110.

[0045] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 9 , according to one embodiment of the present application, the blocking warning device 300 can include a driving unit 310 and a warning unit 320; the driving unit 310 is connected to the bracket 210; the bracket 210 can drive the driving unit 310 to rotate in the state that the indoor fan is turned on; and the driving unit 310 is used to connect the warning unit 320 in the state that the bracket 210 is located at the filter screen blocked position, so as to issue a blocking warning through the warning unit 320.

[0046] In a specific implementation, when the indoor fan is turned on and the filter screen 120 is blocked, the support 210 drives the driving unit 310 to rotate to the filter screen blocking position. After rotating to the filter screen blocking position, the driving unit 310 is connected to the warning unit 320, so as to issue a blocking warning through the warning unit 320.

[0047] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 , according to one embodiment of the present application, the driving unit 310 can include a first gear 311, a second gear 312 and a driving rod 313; the first gear 311 and the second gear 312 are rotatably connected to the indoor machine shell 110, and the rotation axis directions of the first gear 311 and the second gear 312 are the same as the rotation axis direction of the support 210; the support 210 is provided with a driving tooth 2111 (or can be referred to as an incomplete gear); the driving tooth 2111 engages the second gear 312 through the first gear 311; the driving rod 313 is connected to the second gear 312; and the driving rod 313 is used to connect the warning unit 320 in the state that the support 210 is located at the filter screen blocking position, so as to issue a blocking warning through the warning unit 320.

[0048] In a specific implementation, when the indoor fan is turned on and the filter screen 120 is blocked, the driving tooth 2111 of the support 210 drives the first gear 311 to rotate, the rotation of the first gear 311 drives the second gear 312 to rotate, and the rotation of the second gear 312 drives the driving rod 313 to rotate. After the support 210 rotates to the filter screen blocking position, the driving rod 313 is connected to the warning unit 320, so as to issue a blocking warning through the warning unit 320. As shown in Figure 2 and Figure 3 , in the state that the indoor fan is turned on, if the filter screen 120 is not blocked, the driving rod 313 can be in a vertical state; and if the filter screen 120 is blocked, the driving rod 313 can be in an inclined state forward in a direction from bottom to top. It can be understood that, if the torsional force of the torsional spring is small, in the state that the indoor fan is turned on, if the filter screen 120 is not blocked, the driving rod 313 can also not be in a vertical state.

[0049] In some embodiments, the first gear 311 can be replaced by a coaxially arranged third gear (or can be referred to as a pinion) and a fourth gear (or can be referred to as a large gear), the third gear is smaller than the fourth gear, and the driving tooth 2111 engages the second gear 312 through the third gear and the third gear in sequence.

[0050] As shown in Figure 6 and Figure 7As shown, according to one embodiment of the present invention, the warning unit 320 includes a power supply 321 and a first light source 323; the first pole 3211 of the power supply 321 is electrically connected to the drive rod 313. When the bracket 210 is in the filter-transparent position, the power supply 321 and the first light source 323 form a closed circuit so that the first light source 323 emits light.

[0051] In practice, when the filter 120 is not clogged, with the indoor fan on, the bracket 210 is in the position where the filter is open. Since the power supply 321 connects to the first light source 323, the first light source 323 emits light, thus allowing people to know that the filter 120 is not clogged.

[0052] In this embodiment, the power supply 321 can be a DC power supply 321, and the first light source 323 can be a green light bulb.

[0053] In practice, when people notice the green light bulb is lit, it indicates that filter 120 is clogged.

[0054] like Figures 1 to 9 As shown, according to one embodiment of the present invention, the warning unit 320 may further include a blocking contact component 322, an arc-shaped resistor plate 324, a second light source 325, a third light source 326, and a relay 327; the blocking contact component 322 may be a patch, and the arc-shaped resistor plate 324 includes an insulating section 3241 and a conductive section 3242 connected in sequence; the first pole 3211 of the power supply 321 is electrically connected to the first contact of the relay 327, and the first pole 3211 of the power supply 321 is electrically connected to the second contact of the relay 327 in sequence through the drive rod 313 and the first light source 323; the second pole 3212 of the power supply 321 is connected to the second light source 326 in sequence through the second light source 327. The coil 3271 of the power source 325 and the relay 327 is electrically connected to the first pole 3211 of the power source 321. The second pole 3212 of the power source 321 is connected to the blocking contact component 322 through the third light source 326. The second pole 3212 of the power source 321 is connected to the second contact of the relay 327 through the first light source 323. The coil 3271 is electrically connected to the conductive section 3242. The drive rod 313 is configured as a conductive structure and has a first state, a second state, and a third state. In the first state, the bracket 210 is located in the filter screen open position, and the free end of the drive rod 313 contacts the insulating section 3241 so that the first light source 323 emits light.

[0055] According to one embodiment of the present invention, in the second state, the bracket 210 is located at the filter blockage position, and the free end of the drive rod 313 contacts the conductive segment 3242 to make the second light source 325 emit light; in the third state, the bracket 210 is located at the filter blockage position, the free end of the drive rod 313 contacts the free end of the conductive segment 3242, and the drive rod 313 is electrically connected to the blockage contact member 322 to make the third light source 326 emit light.

[0056] During specific implementation, the first state can represent the situation where the filter screen 120 is not blocked, the second state can represent the situation where the filter screen 120 is blocked but does not need to be cleaned, and the third state can represent the situation where the filter screen 120 is blocked and needs to be cleaned.

[0057] In this embodiment, the relay 327 can be a single-pole single-throw relay 327. The relay 327 can be in a normally closed state. The arc-shaped resistor plate 324 can be in a '丿' shape. The arc-shaped resistor plate 324 is equivalent to a sliding rheostat. The second light source 325 can be a yellow light bulb, and the third light source 326 can be a red light bulb. It can be understood that in the second state, as the filter screen 120 becomes more and more blocked, the angle of the counterclockwise rotation of the bracket 210 will become larger and larger. Under the action of the driving rod 313 (equivalent to the sliding piece of the sliding rheostat), the resistance of the circuit where the second light source 325 is located will become smaller and smaller. Thus, the second light source 325 will become brighter and brighter. By observing the brightness change of the second light source 325, it is convenient for people to judge the severity of the blockage of the filter screen 120.

[0058] It can be understood that as Figure 6 and Figure 7 shown, in the first state, the first light source 323 emits light; as Figure 8 shown, in the second state, the second light source 325 emits light; as Figure 9 shown, in the third state, the second light source 325 and the third light source 326 emit light simultaneously.

[0059] As Figure 3 shown, in some embodiments, the driving unit 310 may further include a conductive rod 314, a conductive spring 315, and a conductive contact ball 316. The conductive rod 314 is located at the lower end of the driving rod 313. The extending direction of the conductive rod 314 is the same as the extending direction of the driving rod 313. The conductive spring 315 is disposed around the lower end of the driving rod 313 and the conductive rod 314. The conductive contact ball 316 is connected to the lower end of the conductive rod 314. The conductive contact ball 316 can roll on the arc-shaped resistor plate 324. Through the above structural arrangement, it can be ensured that the conductive contact ball 316 always rolls on the arc-shaped resistor plate 324.

[0060] As Figure 1 shown, in some embodiments, a replacement opening for replacing the filter screen 120 is provided at the front of the inner machine housing 110. The replacement opening is rotatably covered with a rotating cover 400.

[0061] When the filter screen 120 needs to be replaced, the rotating cover 400 can be opened, so as to remove the filter screen 120 installed on the bracket 210 through the replacement opening.

[0062] As Figure 1As shown, according to one embodiment of the present invention, the indoor unit of the present invention may further include a locking device 500, through which the rotating cover 400 is connected to the bracket 210.

[0063] like Figure 4 As shown, in this embodiment, the locking device 500 may include a fixing buckle 510, a rotating hook 520, a first spring 530, and a pressing rod 540. The fixing buckle 510 is located on the side of the bracket 210 facing the rotating cover 400. The rotating hook 520 is rotatably connected to the inner side of the rotating cover 400. The first spring 530 is sandwiched between the rotating hook 520 and the bracket 210. The pressing rod 540 is slidably inserted through the rotating cover 400 from front to back. When the first spring 530 is in the released state, the rotating hook 520 engages with the fixing buckle 510 to lock the rotating cover 400. When the first spring 530 is in the compressed state, the rotating hook 520 separates from the fixing buckle 510 to unlock the rotating cover 400. In some embodiments, the front side of the rotating cover 400 is provided with a through hole, through which the pressing rod 540 is slidably connected to the rotating cover 400. The inner end of the pressing rod 540 is fitted with a limiting ring to prevent the pressing rod 540 from falling outward.

[0064] In practice, when it is necessary to open the rotating cover 400, the pressing rod 540 can be pushed inward. The inner end of the pressing rod 540 will push the lower end of the rotating hook 520 inward, so that the rotating hook 520 rotates counterclockwise. As the rotating hook 520 rotates counterclockwise, the spring gradually becomes compressed, thereby separating the rotating hook 520 from the fixing buckle 510.

[0065] like Figure 4 and Figure 5 As shown, according to one embodiment of the present invention, the bracket 210 is provided with a slot 2112 for inserting the filter 120. The filter 120 is inserted into the slot 2112. The indoor unit may also include a filter fixing device 600, which is located between the rotating cover 400 and the bracket 210 when the rotating cover 400 is closed.

[0066] In the embodiment, the filter screen fixing device 600 comprises a sliding rod 610, a pushing rod 620, a fixing block 630 (or a clamping block) and a second spring 640 (or a top spring), one end of the support 210 facing the rotating cover 400 is provided with a vertical hole and a horizontal hole, the vertical hole is communicated with the horizontal hole, the sliding rod 610 is slidably arranged in the vertical hole, the pushing rod 620 extends into the horizontal hole in a horizontal direction and is connected with the sliding rod 610, the second spring 640 is arranged in the vertical hole and is arranged in a vertical direction and clamped between the lower end of the sliding rod 610 and the support 210, the fixing block 630 is arranged at the upper end of the sliding rod 610, the fixing block 630 has a filter screen fixing position and a filter screen releasing position, in a state that the fixing block 630 is located at the filter screen fixing position, the fixing block 630 abuts against the filter screen 120, and the second spring 640 is in a released state; in a state that the fixing block 630 is located at the filter screen releasing position, the fixing block 630 is separated from the filter screen 120, and the second spring 640 is in a compressed state.

[0067] The application further provides an air conditioner comprising the indoor unit and the outdoor unit of the above-mentioned embodiment, and the outdoor unit is connected with the indoor unit. The specific structure, working principle and beneficial effects of the indoor unit are the same as those of the above-mentioned embodiment, and will not be described herein again.

[0068] In the description of the specification, the description of the terms "one embodiment", "some embodiments”, "a manner”, "a specific manner” or "some manners” means that the specific features, structures, materials or characteristics described in combination with the embodiment or manner are contained in at least one embodiment or manner of the embodiments of the application. In the specification, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or manner. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or manners in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or manners described in the specification and the features of the different embodiments or manners without contradiction.

[0069] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An indoor unit, characterized in that, include: The indoor unit body (100) includes an indoor unit housing (110), a filter screen (120) and an indoor fan. The indoor unit housing (110) has an air inlet (111), the filter screen (120) is covered by the air inlet (111), and the indoor fan is located inside the indoor unit housing (110). A blockage detection device (200) is connected to the filter screen (120) and is used to detect the force on the filter screen (120) along the air intake direction when the indoor fan is turned on. The blockage detection device (200) includes: The bracket (210) is located inside the indoor unit housing (110) and is movably connected to the indoor unit housing (110). The bracket (210) can move when the indoor fan is turned on. The filter screen (120) is provided on the bracket (210). A clogging warning device (300), connected to the bracket (210), is used to issue a warning based on the clogging status of the filter (120); The blockage warning device (300) includes a drive unit (310) and a warning unit (320). The drive unit (310) includes a drive rod (313); The warning unit (320) includes a power supply (321), a first light source (323), an arc-shaped resistor plate (324), a second light source (325), and a third light source (326). The arc-shaped resistor plate (324) includes an insulating section (3241) and a conductive section (3242) connected in sequence. The drive rod (313) is configured as a conductive structure, and the drive rod (313) has a first state; In the first state, the bracket (210) is located in the filter screen open position, and the free end of the drive rod (313) contacts the insulating section (3241) so that the first light source (323) emits light; The drive rod (313) also has a second state; In the second state, the bracket (210) is located at the filter blockage position, and the free end of the drive rod (313) contacts the conductive segment (3242) to make the second light source (325) emit light.

2. The indoor unit according to claim 1, characterized in that, The blockage detection device (200) includes: A reset unit (220) is connected to the indoor unit housing (110) and the bracket (210) for resetting the bracket (210) when the indoor fan is off.

3. The indoor unit according to claim 2, characterized in that, The bracket (210) is rotatably connected to the indoor unit housing (110), and the bracket (210) can move from the filter-permeable position to the filter-clogged position when the indoor fan is turned on.

4. The indoor unit according to claim 3, characterized in that, The bracket (210) includes a bracket body (211) and a rotating shaft (212), and the bracket body (211) is rotatably connected to the inner unit housing (110) through the rotating shaft (212). The filter screen (120) is disposed on the support body (211). The reset unit (220) is a torsion spring, which is sleeved on the rotating shaft (212). One end of the torsion spring is connected to the inner casing (110), and the other end of the torsion spring is connected to the bracket (210).

5. The indoor unit according to claim 4, characterized in that, The drive unit (310) is connected to the bracket (210); The bracket (210) can drive the drive unit (310) to rotate when the indoor fan is turned on; The drive unit (310) is used to connect the warning unit (320) when the bracket (210) is in the position of the filter blockage, so as to issue a blockage warning through the warning unit (320).

6. The indoor unit according to claim 5, characterized in that, The drive unit (310) includes a first gear (311) and a second gear (312). The first gear (311) and the second gear (312) are rotatably connected to the inner housing (110), and the rotation axis direction of the first gear (311) and the second gear (312) is the same as the rotation axis direction of the bracket (210); The bracket (210) is provided with drive teeth (2111); The drive gear (2111) meshes with the second gear (312) through the first gear (311). The drive rod (313) is connected to the second gear (312); The drive rod (313) is used to connect the warning unit (320) when the bracket (210) is in the position of the filter blockage, so as to issue a blockage warning through the warning unit (320).

7. The indoor unit according to claim 6, characterized in that, The first pole (3211) of the power supply (321) is electrically connected to the drive rod (313). When the bracket (210) is in the position where the filter is open, the power supply (321) and the first light source (323) form a closed circuit so that the first light source (323) emits light.

8. The indoor unit according to claim 7, characterized in that, The warning unit (320) also includes a blocking contact component (322) and a relay (327). The power supply (321) has a first pole (3211) and a second pole (3212). The first pole (3211) is electrically connected to the first contact of the relay (327) and is electrically connected to the second contact of the relay (327) in sequence through the drive rod (313) and the first light source (323). The second pole (3212) is electrically connected to the first pole (3211) in sequence through the second light source (325) and the coil (3271) of the relay (327). The second pole (3212) is connected to the blocking contact component (322) through the third light source (326), and the second pole (3212) is connected to the second contact of the relay (327) through the first light source (323). The coil (3271) is electrically connected to the conductive segment (3242).

9. The indoor unit according to claim 8, characterized in that, The drive rod (313) also has a third state; In the third state, the bracket (210) is located at the filter blockage position, the free end of the drive rod (313) contacts the free end of the conductive segment (3242), and the drive rod (313) is electrically connected to the blockage contact member (322) so that the third light source (326) emits light.

10. An air conditioner, characterized in that, include: Indoor unit as described in any one of claims 1 to 9; The outdoor unit is connected to the indoor unit.

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