Indoor unit and air conditioner

Abstract

The invention relates to the technical field of heat pumps, and provides an indoor unit and an air conditioner. The indoor unit comprises an indoor unit body and a blockage detection device, the indoor unit body comprises an indoor unit shell, a filter screen and an indoor fan, the indoor unit shell is provided with an air inlet, the filter screen covers the air inlet, and the indoor fan is arranged in the indoor unit shell; the blockage detection device is connected with the filter screen and used for detecting force borne by the filter screen in the air inlet direction when the indoor fan is started. Compared with the prior art, the blockage result of the filter screen is not determined according to the rotating speed of the indoor fan or the airflow in the air duct, so that misjudgment of the blockage result caused by the prior art can be avoided, and the technical problem that the blockage result of the filter screen is inaccurately judged in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to an indoor unit and an air conditioner. Background Art

[0002] An air conditioner generally includes an indoor unit and an outdoor unit. The indoor unit (such as a cabinet unit or a wall-mounted unit) has a filter, which is used to prevent dust and other substances in the air from entering the indoor unit. As the air conditioner is used, if the filter is not replaced or cleaned, the filter will become clogged. If the filter is clogged, it will affect the air intake of the indoor unit and the user's health.

[0003] There are two main ways in the prior art to determine whether the filter is clogged. The first is to collect the speed feedback signal of the indoor fan, then calculate the frequency of the speed feedback signal, and compare the frequency with the preset frequency of the indoor fan, and finally determine the blockage of the air conditioning filter based on the above comparison results; the second is to set a rotating part in the air duct of the indoor unit. When the indoor fan is turned on, the airflow in the air duct will cause the rotating part to rotate. When the rotating part rotates to the first rotation position, the switch of the trigger contact will be closed. When the switch is closed, the trigger alarm module will generate a blockage alarm.

[0004] However, for the first method, if the indoor fan fails or the operating current of the indoor fan is unstable, it will affect the rotation speed of the indoor fan, thereby causing a misjudgment of the blockage result; for the second method, if only a small part of the filter is blocked and the rotating part is installed near the small part of the filter, it will affect the rotation position of the rotating part, thereby causing a misjudgment of the blockage result. Summary of the invention

[0005] The invention provides an indoor unit and an air conditioner, which are used to solve the technical problem of inaccurate judgment of filter screen blockage results in the prior art.

[0006] The present invention provides an indoor unit, comprising: an indoor unit main body, comprising an indoor unit shell, a filter and an indoor fan, the indoor unit shell having an air inlet, the filter cover being arranged at the air inlet, and the indoor fan being arranged in the indoor unit shell; a blockage detection device, connected to the filter, for detecting the force exerted on the filter along the air inlet direction when the indoor fan is turned on.

[0007] According to one embodiment of the present invention, the blockage detection device includes: a bracket, which is located in the inner machine housing and can be movably connected to the inner machine housing, the bracket can move when the indoor fan is turned on, and the filter is arranged on the bracket; a reset unit, which is connected to the inner machine housing and the bracket, and is used to reset the bracket when the indoor fan is turned off.

[0008] According to one embodiment of the present invention, the bracket is rotatably connected to the inner housing, and the bracket can move from a filter-permeable position to a filter-blocked position when the indoor fan is turned on.

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

[0010] According to one embodiment of the present invention, a clogging warning device is also included, which is connected to the bracket and is used to issue a warning according to the clogging condition of the filter screen.

[0011] According to one embodiment of the present invention, the blockage warning device includes a drive unit and a warning unit; the drive unit is connected to the bracket; the bracket can drive the drive unit to rotate when the indoor fan is turned on; the drive unit is used to connect to the warning unit when the bracket is in a filter blockage position, so as to issue a blockage warning through the warning unit.

[0012] According to one embodiment of the present invention, the driving unit includes a first gear, a second gear and a driving rod; the first gear and the second gear are rotatably connected to the inner casing, and the rotation axis direction of the first gear and the second gear is the same as the rotation axis direction of the bracket; the bracket is provided with driving teeth; the driving teeth mesh with the second gear through the first gear; the driving rod is connected to the second gear; the driving rod is used to connect to the warning unit when the bracket is in the filter blockage position, so as to issue a blockage warning through the warning unit.

[0013] According to one embodiment of the present invention, the warning unit includes a power supply and a first light source; the first pole of the power supply is electrically connected to the driving rod, and when the bracket is located in the filter transparent position, the power supply and the first light source form a closed loop to make the first light source emit light.

[0014] According to one embodiment of the present invention, the warning unit also includes a blocking contact component, an arc-shaped resistor plate, a second light source, a third light source and a relay; the arc-shaped resistor plate includes an insulating segment and a conductive segment connected in sequence; the power supply has a first pole and a second pole, the first pole is electrically connected to the first contact of the relay, and is electrically connected to the 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 the coil of the relay in sequence, the second pole is connected to the blocking 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 segment; the driving rod is set to a conductive structure, and the driving rod has a first state; in the first state, the bracket is located in the filter transparent position, and the free end of the driving rod contacts the insulating segment to make the first light source emit light.

[0015] According to one embodiment of the present invention, the driving rod also has a second state and a third state; in the second state, the bracket is located in a filter blocking position, and the free end of the driving rod contacts the conductive segment to make the second light source emit light; in the third state, the bracket is located in a filter blocking position, the free end of the driving rod contacts the free end of the conductive segment, and the driving rod is electrically connected to the blocking contact component to make the third light source emit light.

[0016] The present invention also provides an air conditioner, comprising: the indoor unit of the above embodiment; and an outdoor unit connected to the indoor unit.

[0017] The characteristics and advantages of the indoor unit and air conditioner of the present invention are:

[0018] After analysis, when the indoor fan is turned on, if the filter is clogged, the mesh of the filter will be blocked, thereby increasing the contact area between the filter and the airflow, and further increasing the force applied to the filter along the air intake direction. The blockage detection device can detect the force applied to the filter along the air intake direction, and thus determine the blockage result of the filter based on the force. That is, the blockage detection device can be used to determine whether the filter is clogged. If clogged, the greater the force. Compared with the prior art, the present invention does not determine the blockage result of the filter based on 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 judgment of the filter blockage result in the prior art can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the indoor unit of the present invention.

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0022] Figure 3 is a schematic diagram of a drive unit of the present invention.

[0023] Figure 4 yes Figure 1 Enlarged view of part B in the middle.

[0024] Figure 5 It is a three-dimensional schematic diagram of the bracket of the present invention.

[0025] Figure 6 It is a schematic diagram of the warning unit of the present invention.

[0026] Figure 7 It is another schematic diagram of the warning unit of the present invention.

[0027] Figure 8 It is another schematic diagram of the warning unit of the present invention.

[0028] Fig. 9 It is another schematic diagram of the warning unit of the present invention.

[0029] Reference numerals:

[0030] 100, inner machine body; 110, inner machine housing; 111, air inlet; 120, filter screen; 200, blockage detection device; 210, bracket; 211, bracket body; 2111, driving tooth; 2112, slot; 212, rotating shaft; 220, reset unit; 300, blockage 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, blocking contact component; 323, first light source; 324, arc-shaped resistor 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, fixing buckle; 520, rotating hook; 530, first spring; 540, pressing rod; 600, filter fixing device; 610, sliding rod; 620, lever; 630, fixing block; 640, second spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean 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 being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Figures 1 to 9The indoor unit (e.g., wall mounted unit) and air conditioner provided by the present invention are shown. As can be seen from the figure, the indoor unit of the present invention includes an indoor unit body 100 and a blockage detection device 200. The indoor unit body 100 includes an indoor unit casing 110, a filter 120, and an indoor fan. The indoor unit casing 110 has an air inlet 111, and the air inlet 111 may be located at the top of the indoor unit casing 110. The filter 120 is covered with the air inlet 111, and the indoor fan is disposed in the indoor unit casing 110. The blockage detection device 200 is connected to the filter 120, and is used for detecting the force exerted on the filter 120 along the air inlet direction when the indoor fan is turned on.

[0037] During specific implementation, when the indoor fan is turned on, if the filter 120 is blocked, the mesh of the filter 120 will be blocked, thereby increasing the contact area between the filter 120 and the airflow, and further increasing the force applied to the filter 120 along the air intake direction. The blockage detection device 200 can detect the force applied to the filter 120 along the air intake direction, thereby determining the blockage result of the filter 120. That is, the blockage detection device 200 can determine whether the filter 120 is blocked. If blocked, the greater the force. Compared with the prior art, the present invention does not determine the blockage result of the filter 120 based on 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, thereby solving the technical problem of inaccurate judgment of the blockage result of the filter 120 in the prior art.

[0038] like Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, the blockage detection device 200 may include a bracket 210 and a reset unit 220, the bracket 210 is located in the inner machine housing 110 and can be movably connected to the inner machine housing 110, the bracket can move when the indoor fan is turned on, and the filter 120 is arranged on the bracket 210; the reset unit 220 is connected to the inner machine housing 110 and the bracket 210, and is used to reset the bracket 210 when the indoor fan is turned off.

[0039] In specific implementation, the bracket 210 can support the filter 120 and provide a support base for the filter 120. The bracket 210 can be movably connected to the inner housing 110. When the indoor fan is turned on, if the filter 120 is blocked, the filter 120 will move together with the bracket 210. By comparing the position of the bracket 210 before and after the movement, that is, by comparing the position of the bracket 210 when the indoor fan is turned on and the position when the indoor fan is turned off, it is determined whether the filter 120 is blocked, which is simple and intuitive. It can be understood that the more blocked the filter 120 is, the greater the difference in the position of the bracket 210 before and after the movement.

[0040] like Figure 1 , Figure 2 and Figure 5As shown, according to one embodiment of the present invention, the bracket 210 can be rotatably connected to the inner machine housing 110, and the bracket 210 can move from the filter transparent position to the filter blocked position when the indoor fan is turned on.

[0041] During specific implementation, when the indoor fan is turned on, the bracket 210 has multiple positions, such as a filter transparent position and a filter blocked position. If the filter 120 is not blocked, the bracket 210 is located at the filter transparent position; if the filter 120 is blocked, the bracket 210 is located at the filter blocked position.

[0042] like Figure 1 , Figure 2 and Figure 5 As shown, in an embodiment, the bracket 210 may include a bracket body 211 and a rotating shaft 212, and the bracket body 211 is rotatably connected to the inner machine housing 110 through the rotating shaft 212; the filter 120 is arranged on the bracket 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 machine housing 110, and the other end of the torsion spring is connected to the bracket 210.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, according to one embodiment of the present invention, the indoor unit of the present invention may further include a blockage warning device 300 connected to the bracket 210 and configured to issue a warning according to the blockage condition of the filter 120 .

[0044] In a specific implementation, since the bracket 210 is installed in the inner machine housing 110, if it is necessary to determine whether the filter 120 is blocked, people need to observe the position of the bracket 210 through the inner machine housing 110 to determine whether the filter 120 is blocked; through the above-mentioned structural setting, people can be reminded whether the filter 120 is blocked, thereby facilitating people's maintenance without having to observe the position of the bracket 210 through the inner machine housing 110.

[0045] like Figure 1 , Figure 2 , Figure 3 and Fig. 9 As shown, according to one embodiment of the present invention, the blockage warning device 300 may include a drive unit 310 and a warning unit 320; 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 to the warning unit 320 when the bracket 210 is located in the filter blockage position, so as to issue a blockage warning through the warning unit 320.

[0046] During specific implementation, when the indoor fan is turned on and the filter 120 is blocked, the bracket 210 will drive the drive unit 310 to rotate to the filter blocking position. After rotating to the filter blocking position, the drive unit 310 connects to the warning unit 320, thereby issuing a blockage warning through the warning unit 320.

[0047] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, according to one embodiment of the present invention, the driving unit 310 may 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 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 a driving tooth 2111 (or it can be called 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; the driving rod 313 is used to connect the warning unit 320 when the bracket 210 is located in the filter 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 120 is blocked, the driving tooth 2111 of the bracket 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 bracket 210 rotates to the filter blocking position, the driving rod 313 connects to the warning unit 320, so that a blocking warning is issued through the warning unit 320. Figure 2 and Figure 3 As shown, when the indoor fan is turned on, if the filter 120 is not blocked, the driving rod 313 can be in a vertical state; if the filter 120 is blocked, the driving rod 313 can be in a forward tilted state from bottom to top. It can be understood that if the torsion of the torsion spring is small, when the indoor fan is turned on, if the filter 120 is not blocked, the driving rod 313 may not be in a vertical state.

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

[0050] like 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 driving rod 313, and when the bracket 210 is located in the filter transparent position, the power supply 321 and the first light source 323 form a closed loop to make the first light source 323 emit light.

[0051] In specific implementation, when the filter 120 is not blocked, when the indoor fan is turned on, the bracket 210 is located at the filter transparent position, and since the power supply 321 is connected to the first light source 323, the first light source 323 emits light, thereby allowing people to know that the filter 120 is not blocked.

[0052] In this embodiment, the power source 321 may be a direct current power source 321 , and the first light source 323 may be a green light bulb.

[0053] In a specific implementation, when people notice that the green light bulb is on, it means that the 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, the arc-shaped resistor plate 324 includes an insulating segment 3241 and a conductive segment 3242 connected in sequence; the first pole 3211 of the power supply 321 is electrically connected to the first contact of the relay 327, the first pole 3211 of the power supply 321 is electrically connected to the second contact of the relay 327 through the driving rod 313 and the first light source 323 in sequence, and the second pole 3212 of the power supply 321 is electrically connected to the second contact of the relay 327 through the second light source 326 in sequence. The source 325 and the coil 3271 of the relay 327 are electrically connected to the first pole 3211 of the power supply 321, the second pole 3212 of the power supply 321 is connected to the blocking contact component 322 through the third light source 326, and the second pole 3212 of the power supply 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 segment 3242; the driving rod 313 is set as a conductive structure, and the driving rod 313 has a first state, a second state and a third state; in the first state, the bracket 210 is located in the filter transparent position, and the free end of the driving rod 313 contacts the insulating segment 3241 to make the first light source 323 emit light.

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

[0056] In specific implementation, the first state may represent the situation where the filter net 120 is not blocked, the second state may represent the situation where the filter net 120 is blocked but does not need to be cleaned, and the third state may represent the situation where the filter net 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 resistance plate 324 can be in a "丿" shape. The arc-shaped resistance 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 net 120 becomes more and more blocked, the counterclockwise rotation angle 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 whether the blockage of the filter net 120 is serious.

[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 Fig. 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 that of the driving rod 313. The conductive spring 315 is arranged 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 resistance plate 324. Through the above structural arrangement, it can be ensured that the conductive contact ball 316 always rolls on the arc-shaped resistance plate 324.

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

[0061] When the filter net 120 needs to be replaced, the rotating cover 400 can be opened, so that the filter net 120 installed on the bracket 210 can be removed 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, and the rotating cover 400 is connected to the bracket 210 through the locking device 500.

[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 arranged 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, and the pressing rod 540 is slidably penetrated from the front to the back of the rotating cover 400, the rotating hook 520 is engaged with the fixing buckle 510 when the first spring 530 is in a released state to lock the rotating cover 400; the rotating hook 520 is separated from the fixing buckle 510 when the first spring 530 is in a compressed state to unlock the rotating cover 400. In some embodiments, a through hole is provided on the front side of the rotating cover 400, the pressing rod 540 is slidably connected to the rotating cover 400 through the through hole, and the inner end of the pressing rod 540 is sleeved with a limiting ring to prevent the pressing rod 540 from falling outward.

[0064] In specific implementation, when it is necessary to open the rotating cover 400, the pressing rod 540 can be pushed inward, and the inner end of the pressing rod 540 will push the lower end of the rotating hook 520 inward, thereby causing the rotating hook 520 to rotate 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, and 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 this embodiment, the filter screen fixing device 600 includes a slide bar 610, a lever 620, a fixing block 630 (or a clamping block) and a second spring 640 (or a top spring). The end of the bracket 210 facing the rotating cover 400 is provided with a vertical hole and a horizontal hole, the vertical hole is connected to the horizontal hole, the slide bar 610 is slidably arranged in the vertical hole, the lever 620 extends into the horizontal hole in the horizontal direction and is connected to the slide bar 610, and the second spring 640 is located in the vertical hole and is arranged vertically and clamped. Between the lower end of the slide rod 610 and the bracket 210, a fixed block 630 is arranged at the upper end of the slide rod 610, and the fixed block 630 has a filter fixing position and a filter releasing position. When the fixed block 630 is located at the filter fixing position, the fixed block 630 presses against the filter 120, and the second spring 640 is in a released state; when the fixed block 630 is located at the filter releasing position, the fixed block 630 is separated from the filter 120, and the second spring 640 is in a compressed state.

[0067] The present invention also provides an air conditioner, comprising the indoor unit and outdoor unit of the above embodiment, wherein the outdoor unit is connected to the indoor unit. The specific structure, working principle and beneficial effects of the indoor unit are the same as those of the above embodiment, and will not be described in detail here.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An indoor unit, characterized in that: include: The inner machine body (100) comprises an inner machine casing (110), a filter (120) and an indoor fan, wherein the inner machine casing (110) has an air inlet (111), the filter (120) is covered on the air inlet (111), and the indoor fan is arranged in the inner machine casing (110); A blockage detection device (200) is connected to the filter (120) and is used to detect the force applied to the filter (120) along the air intake direction when the indoor fan is turned on.

2. The indoor unit according to claim 1, characterized in that: The blockage detection device (200) comprises: A bracket (210) is located inside the inner housing (110) and is movably connected to the inner housing (110); the bracket (210) is movable when the indoor fan is turned on; and the filter (120) is disposed on the bracket (210); A reset unit (220) is connected to the inner machine housing (110) and the bracket (210) and is used to reset the bracket (210) when the indoor fan is in a closed state.

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

4. The indoor unit according to claim 3, characterized in that: The bracket (210) comprises a bracket body (211) and a rotating shaft (212); the bracket body (211) is rotatably connected to the inner casing (110) via the rotating shaft (212); The filter screen (120) is arranged 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 machine housing (110), and the other end of the torsion spring is connected to the bracket (210).

5. The indoor unit according to claim 3 or 4, characterized in that: It also includes a clogging warning device (300) connected to the bracket (210) and used to issue a warning according to the clogging condition of the filter screen (120).

6. The indoor unit according to claim 5, characterized in that: The blockage warning device (300) comprises 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 when the indoor fan is turned on; The driving unit (310) is used to connect to the warning unit (320) when the bracket (210) is located at the filter screen blocking position, so as to issue a blocking warning through the warning unit (320).

7. The indoor unit according to claim 6, characterized in that: The driving unit (310) comprises 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 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 driving teeth (2111); The driving tooth (2111) meshes with the second gear (312) through the first gear (311); The driving rod (313) is connected to the second gear (312); The driving rod (313) is used to connect to the warning unit (320) when the bracket (210) is located at the filter screen blocking position, so as to issue a blocking warning through the warning unit (320).

8. The indoor unit according to claim 7, characterized in that: The warning unit (320) comprises a power source (321) and a first light source (323); The first pole (3211) of the power source (321) is electrically connected to the driving rod (313), and when the bracket (210) is located at the filter transparent position, the power source (321) and the first light source (323) form a closed loop to enable the first light source (323) to emit light.

9. The indoor unit according to claim 8, characterized in that: The warning unit (320) further comprises 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 arc-shaped resistor plate (324) comprises an insulating segment (3241) and a conductive segment (3242) connected in sequence; The power source (321) has a first pole (3211) and a second pole (3212), the first pole (3211) being electrically connected to a first contact of the relay (327), and being electrically connected to a second contact of the relay (327) in sequence through the driving rod (313) and the first light source (323); The second pole (3212) is electrically connected to the first pole (3211) via the second light source (325) and the coil (3271) of the relay (327) in sequence, the second pole (3212) is connected to the blocking contact component (322) via the third light source (326), and the second pole (3212) is connected to the second contact of the relay (327) via the first light source (323); The coil (3271) is electrically connected to the conductive segment (3242); The driving rod (313) is configured as a conductive structure, and the driving rod (313) has a first state; In the first state, the bracket (210) is located at the filter transparent position, and the free end of the driving rod (313) contacts the insulating section (3241), so that the first light source (323) emits light.

10. The indoor unit according to claim 9, characterized in that: The driving rod (313) also has a second state and a third state; In the second state, the bracket (210) is located at the filter blocking position, and the free end of the driving rod (313) contacts the conductive segment (3242), so that the second light source (325) emits light; In the third state, the bracket (210) is located at the filter blocking position, the free end of the driving rod (313) contacts the free end of the conductive segment (3242), and the driving rod (313) is electrically connected to the blocking contact component (322), so that the third light source (326) emits light.

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

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