Indoor unit of air conditioner

Abstract

The invention relates to the technical field of air conditioning, and discloses an air conditioner indoor unit which comprises a shell and an air duct assembly, and the shell is provided with a containing space; the air duct assembly is arranged in the containing space, an air outlet duct is defined by the air duct assembly, and an air outlet is defined by the first end of the air outlet duct; the air duct assembly comprises a lower air duct plate and a first heat insulation strip. The lower air duct plate sequentially comprises a first plate body and a second plate body in the air flowing direction. And the first heat insulation strip is arranged on the second plate body so as to reduce heat transfer between the first plate body and the second plate body. By means of the air conditioner indoor unit, the condensation phenomenon in the air outlet duct can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning, for example, to an air conditioner indoor unit. Background Art

[0002] When the air conditioner operates in the cooling mode, condensation will form at the air outlet. This not only easily breeds bacteria, but also the dripping water will affect the cleanliness of the indoor environment.

[0003] In order to reduce the condensation of the air conditioner during cooling, a related art discloses an air conditioner indoor unit, which includes a housing provided with an air outlet and a dew prevention device arranged along the circumference of the air outlet. The dew prevention device includes: a heat exchange pipe filled with a liquid heat exchange medium inside, and at least part of the pipe section is arranged on the inner side wall of the housing along the circumference of the air outlet; a heating component sleeved outside the heat exchange pipe far from the air outlet for heating the heat exchange medium; a power component arranged inside the housing and forming a circulation loop of the heat exchange medium with the heat exchange pipe for driving the heated heat exchange medium to flow to realize heat exchange with the housing around the air outlet. In the case of the air conditioner indoor unit operating in the cooling mode, the heat exchange between the housing around the air outlet and the surrounding environment is reduced, so that the air is not likely to condense on the housing around the air outlet. In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] By using the heating component to increase the temperature of the housing, the condensation outside the housing can be reduced, but there is still air flowing out inside the air outlet, and the dew prevention effect of the air conditioner needs to be further improved.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or delineate the protection scope of these embodiments, but rather serves as a preface to the following detailed description.

[0007] The embodiments of the present disclosure provide an air conditioner indoor unit to improve the dew prevention effect of the air conditioner.

[0008] In some embodiments, the air conditioner indoor unit includes a housing and an air duct assembly. The housing is configured with a receiving space. The air duct assembly is disposed in the receiving space. The air duct assembly defines an air outlet duct, and a first end of the air outlet duct defines an air outlet. The air duct assembly includes a lower air duct plate and a first heat insulation strip. The lower air duct plate includes a first plate body and a second plate body in sequence along the air flow direction. The first heat insulation strip is disposed on the second plate body to reduce heat transfer between the first plate body and the second plate body.

[0009] In some embodiments, the first heat insulation strip is disposed at the connection position between the first plate body and the second plate body.

[0010] In some embodiments, the first heat insulation strip protrudes toward the air outlet duct. A first end of the first heat insulation strip is smoothly butted against the first plate body, and a second end of the first heat insulation strip forms a step with the second plate body.

[0011] In some embodiments, the air conditioner indoor unit further includes a second heat insulation strip. The second heat insulation strip is disposed on the second plate body to reduce heat transfer between a first part and a second part of the second plate body. The first part and the second part of the second plate body are spliced through the second heat insulation strip.

[0012] In some embodiments, the first plate body and the first part of the second plate body are of an integral structure.

[0013] In some embodiments, the air conditioner indoor unit further includes a connecting plate and a bottom plate. The connecting plate is disposed vertically, and a first end of the connecting plate is connected to an outer end of the second plate body. The bottom plate is disposed horizontally, and a front end of the bottom plate is connected to a bottom end of the connecting plate.

[0014] In some embodiments, the air conditioner indoor unit further includes a third heat insulation strip. The third heat insulation strip is disposed on the connecting plate, and the third heat insulation strip is used to reduce heat transfer between the second plate body and the bottom plate.

[0015] In some embodiments, the connecting plate is provided with a jet hole. When the air outlet duct discharges air, the indoor air is driven to flow through the jet hole and merge into the air discharged from the air outlet duct.

[0016] In some embodiments, the bottom plate is provided with an air guiding hole. The air conditioner indoor unit further includes a jet pipe. A first end of the jet pipe communicates with the jet hole and a second end of the jet pipe communicates with the air guiding hole.

[0017] In some embodiments, the second plate body is located outside the extension line of the first plate body along the air outlet direction.

[0018] The air conditioner indoor unit provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] The air conditioner indoor unit provided by the embodiment of the present disclosure can reduce the degree of temperature drop of the second plate by reducing the heat transfer between the first plate and the second plate, and can reduce the condensation phenomenon generated by the contact between the indoor air and the second plate.

[0020] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Brief Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic structural diagram of an air conditioner indoor unit provided by the embodiment of the present disclosure;

[0023] Figure 2 is one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0024] Figure 3 is another one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0025] Figure 4 is another one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0026] Figure 5 is another one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0027] Figure 6 is another one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0028] Figure 7 is another one provided by the embodiment of the present disclosure Figure 1 is an enlarged schematic view of part A in;

[0029] Figure 8 is a schematic structural diagram of the lower air duct plate of an air conditioner provided by the embodiment of the present disclosure.

[0030] Reference Numerals:

[0031] 100: Housing; 200: Air duct assembly; 300: Lower air duct plate; 310: First plate body; 311: Second groove; 320: Second plate body; 321: First groove; 400: Connecting plate; 410: Jet hole; 500: Bottom plate; 510: Air guiding hole; 600: Jet pipe; 710: First heat insulation strip; 720: Second heat insulation strip; 730: Third heat insulation strip; 810: First contact electrode; 820: Second contact electrode. Detailed implementation mode

[0032] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration purposes only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0033] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0034] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise specified, the term "a plurality of" means two or more.

[0037] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0038] The term "and / or" is an associative relationship describing an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0039] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0040] When the air conditioner is operating, air blows out from the air outlet. On the air outlet path of the indoor unit of the air conditioner, the air flow rate is relatively fast. At a position close to the air outlet, a part of the indoor air will be drawn into the air outlet duct of the air conditioner.

[0041] When the air conditioner is operating in the cooling mode, the temperature of the inner wall of the duct is relatively low. The water vapor carried by the indoor air drawn into the air outlet duct contacts the inner wall of the air outlet duct. When the temperature of the inner wall of the duct is lower than the dew point temperature, the water vapor in the air will condense on the inner wall of the duct. The water droplets condensed on the inner wall of the duct gather and slide to the air outlet, and after converging with the condensation formed outside the air conditioner, it is easily considered as the condensation caused by the relatively low temperature of the housing, or considered as the condensation formed inside the housing because the water vapor in the air entering the indoor unit of the air conditioner is not completely captured by the evaporator.

[0042] In order to reduce the condensation generated in the duct, the indoor unit of the air conditioner provided by the embodiments of the present disclosure reduces the heat transfer of the inner wall of the duct to reduce the condensation formed by the contact inside the indoor air duct.

[0043] Combined Figure 1-8 As shown, the embodiments of the present disclosure provide an indoor unit of an air conditioner. The indoor unit of the air conditioner includes a housing 100 and a duct assembly 200. Among them, the housing 100 is configured with a receiving space; the duct assembly 200 is disposed in the receiving space, and the duct assembly 200 defines an air outlet duct, and the first end of the air outlet duct defines an air outlet; the duct assembly 200 includes a lower duct plate 300 and a first heat insulation strip 710: the lower duct plate 300 includes a first plate body 310 and a second plate body 320 in sequence along the air flow direction; the first heat insulation strip 710 is disposed on the lower duct plate 300 to reduce the heat transfer between the first plate body 310 and the second plate body 320.

[0044] The indoor unit of the air conditioner provided by the embodiments of the present disclosure includes a housing 100 and a duct assembly 200. The duct assembly 200 is disposed in the housing 100 to receive air. In some cases, the duct assembly 200 can be a separately provided duct plate or a chassis integrally provided with a water receiving tray.

[0045] The air outlet duct of the air duct assembly 200 is used to guide the air after heat exchange with the heat exchanger of the air conditioner indoor unit to the indoor environment. In some cases, part of the structure of the air duct assembly 200 also serves as the volute tongue and / or part of the volute of the cross-flow fan of the air conditioner indoor unit.

[0046] The air duct assembly 200 includes a lower air duct plate 300. The lower air duct plate 300 is in terms of the wall-mounted air conditioner indoor unit in the use state. The air duct assembly 200 may include an upper air duct plate, a lower air duct plate 300, and left and right side plates for connecting the upper air duct plate and the lower air duct plate 300, which are oppositely arranged.

[0047] The lower air duct plate 300 includes a first plate body 310 and a second plate body 320. When the air conditioner indoor unit blows air, the air flows through the first plate body 310 and the second plate body 320 in sequence. That is, the first plate body 310 is an inner part of the lower air duct plate 300, and the second plate body 320 is an outer part of the lower air duct plate 300. When the air conditioner operates in the cooling mode, the second plate body 320 is also the part that is prone to generate condensation by acting with the indoor air.

[0048] A first heat insulation strip 710 is arranged on the lower air duct plate 300, which can block the heat transfer between the first plate body 310 and the second plate body 320, so as to reduce or avoid the temperature of the second plate body 320 dropping below the condensation temperature. When the air conditioner indoor unit blows cold air, even if the indoor air is drawn into the air outlet duct, the indoor air is not likely to condense on the surface of the second plate body 320.

[0049] By using the air conditioner indoor unit provided by the embodiments of the present disclosure, the degree of temperature drop of the second plate body 320 can be reduced by reducing the heat transfer between the first plate body 310 and the second plate body 320, so as to reduce the condensation generated by the contact between the indoor air and the second plate body 320.

[0050] Optionally, the first heat insulation strip 710 is arranged at the connection position of the first plate body 310 and the second plate body 320.

[0051] The first heat insulation strip 710 is arranged on the second plate body 320 and is located at the connection position of the first plate body 310 and the second plate body 320. As a preferred embodiment, the first heat insulation strip 710 also serves as a structural member for connecting the segmented first plate body 310 and the second plate body 320. Adopting such a setting form is beneficial to the processing and forming of the lower air duct plate 300, and is also beneficial to reducing or isolating the heat transfer between the first plate body 310 and the second plate body 320.

[0052] Optionally, the first heat insulation strip 710 protrudes towards the air outlet duct. The first end of the first heat insulation strip 710 is smoothly butted with the first plate body 310, and the second end of the first heat insulation strip 710 forms a step with the second plate body 320.

[0053] The first heat insulation strip 710 is arranged along the width direction of the air outlet. The width direction is the left - right direction when the user faces the indoor unit of the wall - mounted air conditioner in the using state. Arranging the first heat insulation strip 710 along the width direction of the air outlet can improve the heat insulation effect of the first heat insulation strip 710.

[0054] Along the air - outlet direction, one long side of the first heat insulation strip 710 close to the inside of the air conditioner is the first end of the first heat insulation strip 710, and one long side of the first heat insulation strip 710 far from the inside of the air conditioner is the second end of the first heat insulation strip 710.

[0055] The first heat insulation strip 710 protrudes. When the cold air flows along the plate surface of the first plate body 310 to the first heat insulation strip 710, it will move along the surface of the first heat insulation strip 710. Since a step is formed between the second end of the first heat insulation strip 710 and the second plate body 320, due to inertia, the air does not flow along the surface of the second plate body 320. With such an arrangement, on the one hand, the heat convection between the cold air and the second plate body 320 can be reduced, thus reducing the temperature drop of the second plate body 320; on the other hand, a small negative pressure area will be formed near the step position, so that more indoor air can be drawn into the air - outlet duct and have heat convection with the second plate body 320. Through the above two aspects, the temperature of the second plate body 320 drops less, thus reducing or avoiding the formation of condensation on the surface of the second plate body 320.

[0056] Optionally, the indoor unit of the air conditioner further includes a second heat insulation strip 720, and the second heat insulation strip 720 is arranged on the second plate body 320 to reduce the heat transfer between the first part and the second part of the second plate body 320; wherein, the first part and the second part of the second plate body 320 are spliced through the second heat insulation strip 720.

[0057] The second heat insulation strip 720 is arranged on the second plate body 320 along the width direction of the indoor unit of the air conditioner. The two sides of the second heat insulation strip 720 are respectively the first part and the second part of the plate body, and the first part is located on the inner side and the second part is located on the outer side.

[0058] Arranging the second heat insulation strip 720 can reduce the heat transfer between the first part and the second part of the second plate body 320. This can reduce the temperature drop of the second part of the second plate body 320, thus reducing the condensation generated on the second part of the plate body.

[0059] In addition, the first part and the second part of the second plate body 320 are spliced by a heat insulation strip, which reduces the heat transfer contact area between the first part and the second part of the second plate body 320, thereby improving the heat transfer effect of the second heat insulation strip 720 between the first part and the second part of the second plate body 320. When the lower air duct plate 300 deforms under the action of thermal expansion and contraction, the second heat insulation strip 720 is made of a deformable material and also serves as a buffer energy absorption structure, reducing the abnormal noise caused by the deformation of the lower air duct plate 300 and enabling the first part and the second part of the second plate body 320 to be better maintained in the initial installation position.

[0060] It should be noted that when the first heat insulation strip 710 and the second heat insulation strip 720 are simultaneously provided on the lower air duct plate 300, there are two heat insulation settings between the first plate body 310 and the second part of the second plate body 320, and the temperature of the second part of the second plate body 320 is not easily reduced to the dew point temperature. This can further improve the anti-condensation effect of the air conditioner.

[0061] Optionally, the first part of the first plate body 310 and the second plate body 320 is an integral structure.

[0062] As an implementation method, the lower air duct plate 300 is provided with a heat insulation strip installation groove, and the first heat insulation strip 710 is embedded in the heat insulation strip installation groove. On both sides of the first heat insulation strip 710 along the air outlet direction are the first heat insulation strip 710 and the second heat insulation strip 720 respectively. The first part of the first plate body 310 and the second plate body 320 being an integral structure can improve the structural strength of the lower air duct plate 300 and the airtightness of the air outlet duct.

[0063] Optionally, the second plate body 320 is located outside the extension line of the first plate body 310 along the air outlet direction.

[0064] Generally speaking, the downwind plate 300 has a continuous and smooth profile to achieve a better guiding effect on the air. This also results in heat convection between the air after heat exchange with the heat exchanger and each position of the downwind plate 300. In the air conditioner indoor unit provided by the embodiment of the present disclosure, the downwind plate 300 is divided into two parts, namely, the first plate 310 and the second plate 320. The second plate 320 is located outside the extension line of the first plate 310 along the air outlet direction, that is, the second plate 320 is farther away from the air outlet path than the first plate 310. When the air conditioner indoor unit cools and exhausts air, the air flows outward along the second plate 320 and separates at the junction of the first plate 310 and the second plate 320. In this way, the heat convection between the cold air and the second plate 320 can be reduced, thereby reducing the situation where the inner wall temperature of the second plate 320 drops below the condensation temperature. The temperature of the second plate 320 is relatively high, and it is not easy for condensation to form on the surface of the second plate 320 after the indoor air is drawn into the air outlet duct. In addition, the second plate 320 is located outside the extension line of the first plate 310 along the air outlet direction, and when the air conditioner indoor unit is outlet, a negative pressure area is formed near the second plate 320. In this way, more indoor air will exchange heat with the second plate 320, thereby reducing the temperature drop of the second plate 320 and further reducing the condensation generated on the second plate 320.

[0065] By using the indoor unit of the air conditioner provided in the embodiment of the present disclosure, on the one hand, the heat convection between the cold air and the second plate 320 during air conditioning cooling can be reduced, and on the other hand, the heat exchange between the indoor air and the second plate 320 can be increased. When the air conditioner is in cooling mode, the temperature of the second plate 320 is not easy to drop to the dew point temperature, thereby reducing the condensation formed in the air outlet duct.

[0066] Optionally, a connection position between the first plate body 310 and the second plate body 320 forms an edge line, and a first angle between the first plate body 310 and the second plate body 320 at the edge line position is less than or equal to 150 degrees.

[0067] If the transition between the first plate 310 and the second plate 320 is relatively smooth, a portion of the cold air may still exchange heat with the second plate 320 by convection under the action of the wall when the air conditioner is in cooling mode. The connection position of the first plate 310 and the second plate 320 forms a ridge, which is conducive to the cold air being separated from the downwind plate 300 in advance.

[0068] Furthermore, the angle between the first plate body 310 and the second plate body 320 at the edge position is less than or equal to 150 degrees, which can further reduce the situation where cold air flows to the second plate body 320.

[0069] Optionally, a connection position between the first plate body 310 and the second plate body 320 forms a step, and the first plate body 310 is higher than the second plate body 320 .

[0070] A step is formed at the connection position between the first plate body 310 and the second plate body 320. At the step position, the air flowing along the first plate body 310 is not easily transferred to the second plate body 320. With such an arrangement, the heat convection between the cold air and the second plate body 320 can be further reduced, thereby reducing the condensation inside the air outlet duct.

[0071] Optionally, the first plate body 310 overlaps the side of the second plate body 320 facing the duct to form a step.

[0072] The first plate body 310 and the second plate body 320 are overlapped, which not only improves the airtightness of the duct, but also forms a step at the connection position between the first plate body 310 and the second plate body 320, reducing the molding difficulty of the duct assembly 200.

[0073] Optionally, the first plate body 310 is configured with a bent portion to form a step.

[0074] The first plate body 310 is bent to form a step, reducing the molding difficulty of the step.

[0075] Optionally, the second plate body 320 is configured with a bent portion to form a step.

[0076] The second plate body 320 is bent to form a step, reducing the molding difficulty of the step.

[0077] Optionally, the first plate body 310 and the second plate body 320 are integrally formed.

[0078] With such an arrangement, the cost of the lower air duct plate 300 can be reduced, and the airtightness of the air outlet duct can be improved.

[0079] Optionally, the second plate body 320 is configured with a first groove 321 in the width direction, and the bottom of the first groove 321 is far from the air outlet path of the air outlet duct.

[0080] For a wall-mounted air conditioner indoor unit in the use state and with the user facing the air conditioner indoor unit directly, the left-right direction of the air conditioner indoor unit is the width direction. The second plate body 320 is provided with a first groove 321 in the width direction, and the bottom of the first groove 321 is far from the air outlet path of the air outlet duct. When the air conditioner indoor unit blows air, the air is not easily introduced into the first groove 321 when flowing along the surface of the first plate body 310, thus reducing the heat convection between the cold air and the second plate body 320.

[0081] In addition, the second plate body 320 is configured with a first groove 321, and the distance between the end of the second plate body 320 connected to the first plate body 310 and the end not connected to the first plate body 310 deviating from the air outlet path is small, which can minimize the size of the air outlet of the air conditioner indoor unit presented to the user and improve the aesthetics of the air conditioner indoor unit.

[0082] Optionally, the first plate body 310 is configured with a second groove 311 in the width direction, and the bottom of the second groove 311 is far from the air outlet path of the air outlet duct.

[0083] When air flows along the plate surface of the first plate body 310, a part of the air enters the second groove 311 and will deflect along the wall surface of the second groove 311 in a direction away from the second plate body 320. By adopting such a setting form, the heat convection between the cold air and the second plate body 320 can be further reduced, thereby reducing the condensation of the air outlet duct.

[0084] Optionally, the inner end of the second groove 311 is smoothly butted against the plate surface of the first plate body 310.

[0085] In this way, more air can be introduced into the second groove 311, and the air will move away from the second plate body 320 under the action of inertia.

[0086] Optionally, the outer end of the second groove 311 forms a ridge line with the plate surface of the first plate body 310.

[0087] This is beneficial for the air to be separated from the first plate body 310 in advance, thereby reducing the heat convection between the air and the second plate body 320.

[0088] Optionally, the outer end of the second groove 311 forms a second included angle with the plate surface of the first plate body 310, and the second included angle is less than or equal to 150 degrees.

[0089] This can improve the separation effect of the air from the first plate body 310.

[0090] Optionally, the cross section of the second plate body 320 is arc-shaped to form a first groove 321.

[0091] By adopting such a setting form, the shape of the second plate body 320 can be made more smooth, which can not only reduce the cost of the second plate body 320 for constructing the first groove 321, but also improve the aesthetics of the air conditioner indoor unit.

[0092] Optionally, the air conditioner indoor unit further includes a connecting plate 400 and a bottom plate 500. Among them, the connecting plate 400 is vertically arranged, and the first end of the connecting plate 400 is connected to the outer end of the second plate body 320; the bottom plate 500 is horizontally arranged, and the front end of the bottom plate 500 is connected to the bottom end of the connecting plate 400.

[0093] The connecting plate 400 can be a part of the air duct assembly 200 or a part of the housing 100.

[0094] The top end of the connecting plate 400 is connected to the outer end of the second plate body 320. When the air conditioner indoor unit blows air, the connecting plate 400 can block a part of the indoor air from entering the air outlet duct, thereby reducing the amount of indoor high-humidity air entering the air outlet duct.

[0095] The bottom plate 500 is horizontally arranged and jointly wraps the second plate body 320 with the connecting plate 400. This can prevent the indoor air from contacting the outer side of the second plate body 320, thereby reducing the condensation outside the air duct assembly 200.

[0096] Optionally, the air conditioner indoor unit further includes a third heat insulation strip 730. The third heat insulation strip 730 is arranged on the connecting plate 400 and is used to reduce the heat transfer between the second plate body 320 and the bottom plate 500.

[0097] Arranging the third heat insulation strip 730 on the connecting plate 400 can reduce the heat transfer between the second plate body 320 and the connecting plate 400. Since the connecting plate 400 is vertically arranged, it also plays a role in preventing the indoor air from being involved in the air outlet duct. If the temperature of the connecting plate 400 is relatively low, more condensation will be generated on the connecting plate 400. By arranging the third heat insulation strip 730, the temperature drop of the connecting plate 400 can be reduced, thereby reducing the condensation generated on the connecting plate 400.

[0098] Optionally, the connecting plate 400 is provided with jet holes 410. When the air outlet duct discharges air, it drives the indoor air to flow into the air outlet of the air outlet duct through the jet holes 410.

[0099] When the air conditioner indoor unit discharges air, a negative pressure will be formed near the air outlet. By providing jet holes 410 on the connecting plate 400, a part of the indoor air will flow into the air outlet of the air conditioner through the jet holes 410. This can make the air flow near the air outlet more orderly, reduce the trailing vortex turbulence, and thus reduce the amount of indoor air involved in the air outlet duct. By adopting such a setting form, the condensation inside the air outlet duct can be reduced by reducing the indoor air involved in the air outlet duct.

[0100] Optionally, the bottom plate 500 is provided with air guiding holes 510; the air conditioner indoor unit further includes a jet pipe 600. The first end of the jet pipe 600 is communicated with the jet holes 410, and the second end is communicated with the air guiding holes 510.

[0101] By providing air guiding holes 510 on the bottom plate 500, the indoor air located below the air conditioner indoor unit can be introduced into the air outlet of the air conditioner through the jet pipe 600. For a wall-mounted air conditioner indoor unit, there is a relatively large space below the air conditioner indoor unit when it discharges air. Therefore, the indoor air contacts the lower air duct plate 300 of the air duct assembly 200 more. The jet pipe 600 introduces the indoor air below the hole bottom plate 500 into the air outlet of the air conditioner, which can make the flow of the indoor air and the air outlet of the air conditioner more orderly when the air conditioner indoor unit discharges air, thereby reducing the amount of indoor air involved in the air outlet duct. By adopting such a setting form, the anti-condensation effect of the air conditioner can be further improved.

[0102] Optionally, the air conditioner indoor unit further includes a heating device, and the heating device is used to increase the temperature of the second plate body 320.

[0103] When the temperature of the second plate body 320 is relatively low, the temperature of the second plate body 320 can also be increased by starting the heating device. This can reduce or avoid the formation of condensation on the second plate body 320.

[0104] Optionally, the heating device includes a first contact electrode 810 and a second contact electrode 820. The first electrode and the second electrode are connected when the surface of the second plate body 320 is wet to start the heating device.

[0105] After the first contact electrode 810 and the second contact electrode 820 are connected, the heating device starts to heat the second plate body 320. Specifically, the first contact electrode 810 and the second contact electrode 820 are exposed on the side of the second plate body 320 facing the air outlet duct. After condensation water is generated on the second plate body 320, the dust impurities dissolved in the condensation water are conductive, causing the first contact electrode 810 and the second contact electrode 820 to be connected.

[0106] Adopting such a setting form is beneficial to the timely start of heating by the heating device. Since there is no need to set components such as temperature sensors and humidity sensors, and only the presence or absence of water on the surface of the second plate body 320 is used as the trigger condition for starting the heating device, the operation is reliable and the cost is low.

[0107] Optionally, the heating device includes a relay. After the first contact electrode 810 and the second contact electrode 820 are conducted, the wiring device controls the conduction of the heating circuit of the heating device.

[0108] This can achieve the high-voltage and low-voltage isolation between the contact electrode and the heating element of the heating device, improving the use safety of the indoor unit of the air conditioner.

[0109] Optionally, the heating device further includes a heating wire, and the heating wire is embedded in the second plate body 320.

[0110] Adopting such a setting form can improve the heating effect on the second plate body 320.

[0111] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless specifically required, individual components and functions are optional, and the order of operations can vary. Some parts and features of some embodiments can be included in or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An air conditioner indoor unit, characterized in that, Comprising: A housing configured with an accommodation space; An air duct assembly disposed in the accommodation space, the air duct assembly defining an air outlet duct, and a first end of the air outlet duct defining an air outlet; Wherein, the air duct assembly includes: A lower air duct plate including a first plate body and a second plate body arranged in sequence along the air flow direction; A first heat insulation strip disposed on the lower air duct plate to reduce heat transfer between the first plate body and the second plate body.

2. The indoor air conditioner according to claim 1, characterized in that The first heat insulation strip is disposed at the connection position between the first plate body and the second plate body.

3. The indoor air conditioner according to claim 2, characterized in that The first heat insulation strip protrudes towards the air outlet duct, a first end of the first heat insulation strip is smoothly butted with the first plate body, and a second end of the first heat insulation strip forms a step with the second plate body.

4. The air conditioner indoor unit according to claim 1, characterized in that, Further comprising: A second heat insulation strip disposed on the second plate body to reduce heat transfer between a first part and a second part of the second plate body; Wherein, the first part and the second part of the second plate body are spliced through the second heat insulation strip.

5. The indoor air conditioner according to claim 4, characterized in that The first plate body and the first part of the second plate body are of an integral structure.

6. The air conditioner indoor unit according to claim 1, characterized in that, Further comprising: A connecting plate vertically arranged, a first end of the connecting plate being connected to an outer end of the second plate body; A bottom plate horizontally arranged, a front end of the bottom plate being connected to a bottom end of the connecting plate.

7. The air conditioner indoor unit according to claim 6, characterized in that Further comprising: A third heat insulation strip disposed on the connecting plate, the third heat insulation strip being used to reduce heat transfer between the second plate body and the bottom plate.

8. The indoor air conditioner according to claim 6, characterized in that The connecting plate is provided with a jet hole, and when the air outlet duct discharges air, it drives indoor air to flow into the air outlet of the air outlet duct through the jet hole.

9. The indoor air conditioner according to claim 8, characterized in that The bottom plate is provided with an air guiding hole; The indoor air conditioner further includes: A jet pipe, a first end of which is communicated with the jet hole and a second end of which is communicated with the air guiding hole.

10. The indoor air conditioner according to any one of claims 1 to 7, characterized in that The second plate body is located outside the extension line of the first plate body along the air outlet direction.

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