Indoor unit and air conditioner

Abstract

The invention relates to the technical field of household appliances, and provides an indoor unit and an air conditioner. The indoor unit comprises an indoor unit shell, a main control circuit board and a power-off device, and the main control circuit board is arranged on the indoor unit shell and electrically connected with a power source; the power-off device is arranged in the indoor unit shell; and the power-off device is used for disconnecting the main control circuit board from the power supply in a state that water exists at the bottom in the inner shell. The invention provides an indoor unit and an air conditioner, which are used for solving the technical problem of electric leakage of an indoor unit shell due to the fact that water at the inner bottom of the indoor unit shell of the air conditioner is in contact with electrified wires and electrified electronic components at the bottom of the indoor unit shell in the prior art.

Description

Technical Field

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

[0002] Air conditioning, or air conditioner, refers to a device that uses artificial means to adjust and control parameters such as the temperature, humidity, and flow rate of the ambient air in a building or structure.

[0003] Taking the indoor unit of an air conditioner as an example, the indoor unit may include an inner unit casing, an evaporator, a water collecting pan and an indoor fan. The evaporator, the water collecting pan and the indoor fan are located in the inner unit casing. Among them, the water collecting pan is located below the evaporator and can receive the condensed water falling from the evaporator.

[0004] In the prior art, although the water tray can receive the condensed water falling from the evaporator, there will still be water at the bottom of the inner casing. For example, when the wind speed of the indoor fan is too fast, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner casing under the action of the indoor fan. However, the bottom of the inner casing is provided with charged wires and many charged electronic components. When the splashed condensed water contacts the charged wires and charged electronic components at the bottom of the inner casing, it is easy to cause leakage of the inner casing. Therefore, there are certain safety hazards. Summary of the invention

[0005] The invention provides an indoor unit and an air conditioner, which are used to solve the technical problem in the prior art that the inner casing of the air conditioner leaks electricity because water at the bottom of the inner casing contacts charged wires and charged electronic components at the bottom of the inner casing.

[0006] The present invention provides an indoor unit, comprising: an inner unit housing; a main control circuit board, which is arranged in the inner unit housing and electrically connected to a power supply; and a power-off device, which is arranged in the inner unit housing; wherein the power-off device is used to disconnect the connection between the main control circuit board and the power supply when there is water at the bottom of the inner unit housing.

[0007] According to one embodiment of the present invention, the power-off device includes: a driving unit, which is located in the inner machine housing and connected to the bottom of the inner machine housing; a disconnecting unit, which is arranged at the free end of the driving unit and electrically connected to the main control circuit board and the power supply; wherein the driving unit is used to drive the disconnecting unit to move when water at the bottom of the inner machine housing contacts the driving unit, so as to disconnect the connection between the main control circuit board and the power supply through the disconnecting unit.

[0008] According to one embodiment of the present invention, the driving unit includes: a limiting structure, connected to the bottom of the inner machine shell, having a limiting channel, the limiting channel extending from the connecting end of the limiting structure to the free end of the limiting structure; a water-swelling structure, arranged in the limiting channel, and the shape of the water-swelling structure matches the shape of the limiting channel, and the disconnecting unit is located at the free end of the limiting structure and connected to the water-swelling structure; wherein the water-swelling structure is used to drive the disconnecting unit to move when the water at the bottom of the inner machine shell contacts the water-swelling structure.

[0009] According to one embodiment of the present invention, the outer peripheral wall of the limiting structure has a water inlet at its connecting end which can communicate with the limiting channel.

[0010] According to one embodiment of the present invention, the driving unit further includes a buffer structure sandwiched between the water-swellable structure and the disconnection unit.

[0011] According to one embodiment of the present invention, the buffer structure includes: a connecting component, which is sleeved on the free end of the limiting structure, from the connecting end of the limiting structure to the free end of the limiting structure; and an elastic component, which is clamped between the connecting component and the disconnection unit.

[0012] According to one embodiment of the present invention, a fuse is connected between the power supply and the main control circuit board; the disconnect unit is used to short-circuit the main control circuit board when water at the bottom of the inner casing contacts the connection end of the drive unit.

[0013] According to one embodiment of the present invention, the disconnect unit includes a first conductive part and a second conductive part; the first conductive part is arranged at the free end of the driving unit and is electrically connected to the live wire of the power supply; the second conductive part is electrically connected to the neutral wire of the power supply and has a gap with the first conductive part; wherein the driving unit is used to drive the first conductive part to abut against the second conductive part when the water at the bottom of the inner casing is in contact with the connecting end of the driving unit.

[0014] According to an embodiment of the present invention, the second conductive portion is located on a side of the first conductive portion away from the driving unit, and the second conductive portion is connected to the inner wall of the inner casing via a bracket.

[0015] The present invention also provides an air conditioner, comprising: the indoor unit of the above embodiment.

[0016] The indoor unit and air conditioner provided by the present invention can, when there is water at the bottom of the inner casing, use a circuit disconnection device to disconnect the connection between the main control circuit board and the power supply. As a result, the wires and many electronic components at the bottom of the inner casing are not charged. Therefore, even if condensed water at the bottom of the inner casing contacts the wires and electronic components, it will not cause leakage of the inner casing, thereby improving safety and avoiding unnecessary safety hazards. It can solve the technical problem in the prior art that the inner casing leaks due to the water at the bottom of the inner casing of the air conditioner contacting the charged wires and charged electronic components at the bottom of the inner casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a schematic diagram of the indoor unit of the present invention.

[0019] Figure 2 It is a three-dimensional schematic diagram of the power-off device of the present invention.

[0020] Figure 3 It is an exploded view of the power-off device of the present invention.

[0021] Figure 4 It is a schematic diagram of one state of the power-off device of the present invention.

[0022] Figure 5 It is a schematic diagram of another state of the power-off device of the present invention.

[0023] Figure 6 It is a schematic diagram of one embodiment of the indoor unit of the present invention.

[0024] Reference numerals:

[0025] 100, inner housing; 200, main control circuit board; 300, power supply; 400, power-off device; 410, drive unit; 411, limiting structure; 4101, connecting end of limiting structure; 4102, free end of limiting structure; 4111, limiting channel; 4110, water inlet; 412, water-swelling structure; 413, buffer structure; 4131, connecting component; 4132, elastic component; 420, disconnect unit; 421, first conductive part; 422, second conductive part; 500, fuse; 600, bracket. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Figures 1 to 6 The indoor 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 inner machine housing 100, a main control circuit board 200 and a power-off device 400. The main control circuit board 200 is arranged in the inner machine housing 100 and is electrically connected to the power supply 300; the power-off device 400 is arranged in the inner machine housing 100; wherein the power-off device 400 is used to disconnect the connection between the main control circuit board 200 and the power supply 300 when there is water at the bottom of the inner machine housing 100.

[0032] During specific implementation, when there is water at the bottom of the inner casing 100, the circuit disconnection device can disconnect the connection between the main control circuit board 200 and the power supply 300. As a result, the wires and many electronic components at the bottom of the inner casing 100 are not charged. Therefore, even if the condensed water at the bottom of the inner casing 100 contacts the wires and electronic components, it will not cause leakage of the inner casing 100, thereby improving safety and avoiding unnecessary safety hazards. It can solve the technical problem of leakage of the inner casing 100 caused by water at the bottom of the inner casing 100 of the air conditioner contacting the charged wires and charged electronic components at the bottom of the inner casing 100 in the prior art.

[0033] like Figure 1 As shown, in this embodiment, the main control circuit board 200 can be arranged in the inner housing 100; the power supply 300 can be alternating current.

[0034] According to one embodiment of the present invention, the power-off device 400 may include a driving unit 410 and a disconnecting unit 420, wherein the driving unit 410 is located inside the inner housing 100 and is connected to the bottom of the inner housing 100; the disconnecting unit 420 is disposed at the free end of the driving unit 410 and is electrically connected to the main control circuit board 200 and the power supply 300; wherein the driving unit 410 is used to drive the disconnecting unit 420 to move when water at the bottom of the inner housing 100 contacts the driving unit 410, so as to disconnect the connection between the main control circuit board 200 and the power supply 300 through the disconnecting unit 420.

[0035] In a specific implementation, for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner machine casing 100. After the driving unit 410 contacts the condensed water, it can drive the disconnecting unit 420 to move, and the connection between the main control circuit board 200 and the power supply 300 is disconnected by the disconnecting unit 420.

[0036] like Figure 2 As shown, according to one embodiment of the present invention, the driving unit 410 may include a limiting structure 411 and a water-swelling structure 412, the limiting structure 411 is connected to the bottom of the inner casing 100, and has a limiting channel 4111, the limiting channel 4111 extends from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411; the water-swelling structure 412 is arranged in the limiting channel 4111, and the shape of the water-swelling structure 412 matches the shape of the limiting channel 4111, and the disconnecting unit 420 is located at the free end 4102 of the limiting structure 411 and is connected to the water-swelling structure 412; wherein the water-swelling structure 412 is used to drive the disconnecting unit 420 to move when the water at the bottom of the inner casing 100 contacts the water-swelling structure 412.

[0037] In specific implementation, for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner casing 100, and the water-swellable structure 412 will expand and increase in volume after contacting the condensed water. Due to the setting of the limiting channel 4111, the water-swellable structure 412 can move in the direction from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411 after expansion, and since the disconnection unit 420 is connected to the water-swellable structure 412, the water-swellable structure 412 will drive the disconnection unit 420 to move from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411, so as to disconnect the connection between the main control circuit board 200 and the power supply 300 through the disconnection unit 420, and the water-swellable structure 412 drives the disconnection unit 420 by the characteristic of the water-swellable structure 412 swelling when exposed to water.

[0038] In addition, the limiting structure 411 can limit the position of the water-swellable structure 412 to prevent the water-swellable structure 412 from being blown away by the indoor fan.

[0039] like Figure 2 and Figure 3As shown, in this embodiment, the limiting structure 411 can be extended vertically, the limiting channel 4111 can be extended vertically and pass through the two ends of the limiting structure 411, and the limiting structure 411 can be a cylindrical structure with openings at both ends; the water-swellable structure 412 can be extended vertically and pass through the limiting channel 4111, and the driving unit 410 can be a structural member made of water-swellable material, for example, the driving unit 410 can be a conventional water-swellable cotton.

[0040] like Figure 2 As shown, according to one embodiment of the present invention, the outer peripheral wall of the limiting structure 411 and the connection end 4101 thereof have a water inlet 4110 that can communicate with the limiting channel 4111.

[0041] In a specific implementation, for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner machine casing 100, and the condensed water at the bottom of the inner machine casing 100 can enter the limiting channel 4111 through the water inlet 4110, thereby ensuring that the water-expandable structure 412 can quickly contact the condensed water and disconnect the connection between the main control circuit board 200 and the power supply 300 at the first time.

[0042] like Figure 2 As shown, in this embodiment, the shape of the water inlet 4110 may be semicircular, and there may be two water inlets 4110 , which are arranged opposite to each other along the radial direction of the limiting structure 411 .

[0043] like Figure 2 As shown, according to one embodiment of the present invention, the driving unit 410 may further include a buffer structure 413 sandwiched between the water-swellable structure 412 and the disconnecting unit 420 .

[0044] In a specific implementation, for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner casing 100, and the water-swellable structure 412 will expand and increase in volume after contacting the condensed water. After expansion, the water-swellable structure 412 can move in the direction from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411, and since the disconnect unit 420 is connected to the water-swellable structure 412 through the buffer structure 413, the buffer structure 413 can buffer the force applied by the water-swellable structure 412 to the disconnect unit 420, so that the force applied to the disconnect unit 420 is relatively gentle, reducing the impact of the water-swellable structure 412 on the disconnect unit 420, thereby improving the durability of the disconnect unit 420.

[0045] like Figure 2As shown, according to one embodiment of the present invention, the buffer structure 413 may include a connecting component 4131 and an elastic component 4132, the connecting component 4131 is sleeved on the free end 4102 of the limiting structure 411, from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411; the elastic component 4132 is clamped between the connecting component 4131 and the disconnection unit 420.

[0046] In specific implementation, the connecting component 4131 serves to connect the elastic component 4132 and the water-swellable structure 412, so that the elastic component 4132 can be firmly connected to the water-swellable structure 412 through the connecting component 4131, that is, after the water-swellable structure 412 comes into contact with condensed water, it will expand and cause its volume to increase. After the expansion, the water-swellable structure 412 can move in the direction from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411. The movement of the water-swellable structure 412 will drive the connecting component 4131, the elastic component 4132 and the disconnecting unit 420 (the first conductive part 421) to move together in the direction from the connecting end 4101 of the limiting structure 411 to the free end 4102 of the limiting structure 411, so as to disconnect the connection between the main control circuit board 200 and the power supply 300 through the disconnecting unit 420.

[0047] like Figure 2 As shown, in this embodiment, the elastic component 4132 can be a cylindrical helical compression spring arranged along the extension direction of the limiting channel 4111.

[0048] like Figure 6 As shown, according to one embodiment of the present invention, a fuse 500 is connected between the power supply 300 and the main control circuit board 200; the disconnect unit 420 is used to short-circuit the main control circuit board 200 when water at the bottom of the inner machine housing 100 contacts the connection end of the drive unit 410.

[0049] In a specific implementation, for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner machine housing 100, and the water at the bottom of the inner machine housing 100 will contact the driving unit 410. After the contact, the driving unit 410 will expand. As the volume of the driving unit 410 increases, the driving unit 410 can drive (or trigger) the disconnecting unit 420 to move, and the main control circuit board 200 is short-circuited through the disconnecting unit 420. After the main control circuit board 200 (or load) is short-circuited, since the power supply 300 does not pass through the load, the current in the circuit The resistance is small, while the current in the circuit is large. According to the characteristics of the fuse 500, when the current flowing through the fuse 500 abnormally increases to a certain height and temperature, the fuse 500 will melt, thereby cutting off the circuit, that is, the fuse 500 will melt after a short circuit, thereby disconnecting the main control circuit board 200 from the power supply 300; therefore, the wires and many electronic components at the bottom of the inner housing 100 are not energized, therefore, even if the condensed water at the bottom of the inner housing 100 contacts the wires and electronic components, it will not cause leakage of the inner housing 100, thereby improving safety and avoiding unnecessary safety hazards.

[0050] In this embodiment, the fuse 500 may be a recoverable fuse 500 (or may be called a resettable fuse 500 ).

[0051] In specific implementation, through the above-mentioned structural setting, after cleaning the moisture at the bottom of the inner casing 100, people do not need to manually connect the power supply 300 and the main control circuit board 200, which is convenient for maintenance.

[0052] like Figure 6 As shown, according to one embodiment of the present invention, the disconnect unit 420 may include a first conductive part 421 and a second conductive part 422; the first conductive part 421 is provided at the free end of the drive unit 410 (the upper end of the elastic component 4132), and is electrically connected to the live wire of the power supply 300; the second conductive part 422 is electrically connected to the neutral wire of the power supply 300, and has a gap with the first conductive part 421; wherein the drive unit 410 is used to drive the first conductive part 421 to abut against the second conductive part 422 when the water at the bottom of the inner housing 100 is in contact with the connection end (water-expandable structure 412) of the drive unit 410.

[0053] like Figure 5 and Figure 6As shown, in this embodiment, the air conditioner may include an electric control box, which is provided with a terminal row, the terminal row having a first terminal and a second terminal insulated from each other, the first terminal connected to the live wire of the power supply 300, and the second terminal connected to the neutral wire of the power supply 300; the first conductive part 421 can be connected to the upper end of the elastic component 4132, and the first conductive part 421 is connected to the live wire of the power supply 300 through the first terminal; the second conductive part 422 is located above the first conductive part 421, for example, the second conductive part 422 is located above the first conductive part 421, and is connected to the bottom of the inner machine casing 100 through the bracket 600, and is located above the first conductive part 421, and the second conductive part 422 is connected to the neutral wire of the power supply 300 through the second terminal; that is, the second conductive part 422 is located on the side of the first conductive part 421 away from the driving unit 410, and the second conductive part 422 is connected to the inner wall of the inner machine casing 100 through the bracket 600.

[0054] During specific implementation, under normal conditions, there is a gap between the first conductive portion 421 and the second conductive portion 422, that is, when there is no water at the bottom of the inner machine casing 100, the first conductive portion 421 and the second conductive portion 422 are not connected; for example, when the wind speed of the indoor fan is too fast, under the action of the indoor fan, the condensed water on the surface of the evaporator will be splashed to the bottom of the inner machine casing 100, and the water at the bottom of the inner machine casing 100 will contact the drive unit 410, and the drive unit 410 will expand after the contact. As the volume of the drive unit 410 increases, the expansion of the drive unit 410 can drive the first conductive portion 421 to move toward the second conductive portion 422, and move to abut the second conductive portion 422, thereby causing a short circuit in the main control circuit board 200, that is, disconnecting the unit 420. It is arranged in parallel with the main control circuit board 200. After a short circuit occurs in the main control circuit board 200 (or it can be called a load), since the power supply 300 does not pass through the load, the resistance in the circuit is small, while the current in the circuit is large. According to the characteristics of the fuse 500, when the current flowing through the fuse 500 abnormally increases to a certain height and temperature, the fuse 500 will melt, thereby cutting off the circuit. That is, if the fuse 500 melts, the main control circuit board 200 is disconnected from the power supply 300; thus, the wires and many electronic components at the bottom of the inner housing 100 are not energized. Therefore, even if the condensed water at the bottom of the inner housing 100 contacts the wires and electronic components, it will not cause leakage of the inner housing 100, thereby improving safety and avoiding unnecessary safety hazards.

[0055] The present invention also provides an air conditioner, comprising the indoor unit of the above embodiment. The specific structure, working principle and beneficial effects of the air conditioner are the same as those of the above embodiment, and will not be described in detail here.

[0056] 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.

[0057] 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: Inner machine housing (100); A main control circuit board (200) is disposed in the inner housing (100) and is electrically connected to a power source (300); A power-off device (400) is arranged on the inner machine housing (100); The power-off device (400) is used to disconnect the connection between the main control circuit board (200) and the power source (300) when there is water at the bottom of the inner casing (100).

2. The indoor unit according to claim 1, characterized in that: The power-off device (400) comprises: A drive unit (410) is located inside the inner housing (100) and connected to the bottom of the inner housing (100); A disconnect unit (420), arranged at a free end of the drive unit (410) and electrically connected to the main control circuit board (200) and the power source (300); The driving unit (410) is used to drive the disconnecting unit (420) to move when water at the bottom of the inner casing (100) contacts the driving unit (410), so as to disconnect the connection between the main control circuit board (200) and the power supply (300) through the disconnecting unit (420).

3. The indoor unit according to claim 2, characterized in that: The driving unit (410) comprises: A limiting structure (411) connected to the bottom of the inner casing (100), having a limiting channel (4111), wherein the limiting channel (4111) extends from a connecting end (4101) of the limiting structure (411) to a free end (4102) of the limiting structure (411); A water-swellable structure (412) is disposed in the limiting channel (4111), and the shape of the water-swellable structure (412) matches the shape of the limiting channel (4111), and the disconnection unit (420) is located at the free end (4102) of the limiting structure (411) and connected to the water-swellable structure (412); The water-swellable structure (412) is used to drive the disconnection unit (420) to move when water at the bottom of the inner casing (100) contacts the water-swellable structure (412).

4. The indoor unit according to claim 3, characterized in that: The outer peripheral wall of the limiting structure (411) and located at its connection end (4101) has a water inlet (4110) that can communicate with the limiting channel (4111).

5. The indoor unit according to claim 3, characterized in that: The driving unit (410) further comprises a buffer structure (413) which is sandwiched between the water-swellable structure (412) and the disconnection unit (420).

6. The indoor unit according to claim 5, characterized in that: The buffer structure (413) comprises: A connecting component (4131) is sleeved on the free end (4102) of the limiting structure (411), extending from the connecting end (4101) of the limiting structure (411) to the free end (4102) of the limiting structure (411); The elastic component (4132) is sandwiched between the connecting component (4131) and the disconnecting unit (420).

7. The indoor unit according to any one of claims 2 to 6, characterized in that: A fuse (500) is connected between the power supply (300) and the main control circuit board (200); The disconnection unit (420) is used to short-circuit the main control circuit board (200) when water at the bottom of the inner casing (100) contacts the connection end of the drive unit (410).

8. The indoor unit according to claim 7, characterized in that: The disconnecting unit (420) comprises a first conductive portion (421) and a second conductive portion (422); The first conductive portion (421) is disposed at the free end of the driving unit (410) and is electrically connected to the live wire of the power source (300); The second conductive part (422) is electrically connected to the neutral line of the power source (300), and has a gap between it and the first conductive part (421); The driving unit (410) is used to drive the first conductive part (421) to abut against the second conductive part (422) when water at the bottom of the inner casing (100) is in contact with the connection end of the driving unit (410).

9. The indoor unit according to claim 8, characterized in that: The second conductive portion (422) is located on a side of the first conductive portion (421) that is away from the drive unit (410), and the second conductive portion (422) is connected to the inner wall of the inner casing (100) via a bracket (600).

10. An air conditioner, characterized in that: include: The indoor unit according to any one of claims 1 to 9.

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