Air duct structure and air conditioner indoor unit

Abstract

The utility model belongs to the technical field of air conditioners, and particularly relates to an air duct structure and an air conditioner indoor unit. The air duct structure comprises an air duct shell and at least one electric heating piece, the air duct shell comprises an air duct bottom plate, the air duct bottom plate is provided with at least one mounting groove, one end of each electric heating piece is correspondingly located in the corresponding mounting groove, and the peripheral side of each mounting groove is provided with at least one water outlet; and the condensed water in the mounting groove flows to a water pan of the indoor unit of the air conditioner. The air duct structure can prevent condensate water from being accumulated in the mounting groove, and therefore the electric heating piece is prevented from being affected with damp or water enters the electric heating piece.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and specifically relates to an air duct structure and an air conditioning indoor unit. Background Art

[0002] Air conditioners are usually used to adjust parameters such as temperature, humidity and flow rate of indoor ambient air. Air conditioners are usually equipped with electric heaters, which are used to assist in heating the hot air in the air conditioner when the air conditioner is heating, so as to improve the heating effect of the air conditioner.

[0003] In the prior art, an indoor unit of an air conditioner comprises an air duct housing, the air duct housing comprises a bottom plate, a positioning groove is arranged on the bottom plate, and one end of the electric heater is installed in the positioning groove.

[0004] However, when the air conditioner is cooling, a lot of condensed water will be generated on the electric heater. The condensed water will accumulate in the positioning groove, causing the electric heater to become damp or flooded. Utility Model Content

[0005] The present application provides an air duct structure and an air conditioner indoor unit to solve the problem that condensed water accumulates in the positioning groove, causing the electric heater to become damp or water-infiltrated.

[0006] On the one hand, the present application provides a duct structure for an air-conditioning indoor unit, the duct structure comprising an air-duct shell and at least one electric heating element, the air-duct shell comprising an air-duct bottom plate; the air-duct bottom plate is provided with at least one mounting groove, one end of the electric heating element is correspondingly located in the mounting groove, the surrounding side of the mounting groove is provided with at least one drain port, the drain port is configured to allow condensed water in the mounting groove to flow to a water receiving pan of the air-conditioning indoor unit.

[0007] In some technical solutions of the above-mentioned air duct structure, the drain port is located on the side wall of the mounting groove.

[0008] In some technical solutions of the above-mentioned air duct structure, the bottom end of the drain outlet and the bottom of the installation groove are located in the same plane.

[0009] In some technical solutions of the above-mentioned air duct structure, one side of the installation groove is provided with two baffles, a distance is provided between the two baffles, and the two baffles form the drain port.

[0010] In some technical solutions of the above-mentioned air duct structure, the air duct bottom plate is also provided with a guide groove, and the guide groove is connected with the installation groove through the drain port; the bottom of the guide groove has at least one drainage hole, and the drainage hole is used to allow the condensed water in the guide groove to flow to the water receiving pan of the air conditioner indoor unit.

[0011] In some technical solutions of the above-mentioned air duct structure, at least one drainage groove is provided on the groove wall of the guide groove, and each drainage groove is respectively connected to each drainage port.

[0012] In some technical solutions of the above-mentioned air duct structure, the air duct bottom plate has a first step surface and a second step surface, the first step surface is higher than the second step surface, the mounting groove is located on the first step surface, and the guide groove is located on the second step surface.

[0013] In some technical solutions of the above-mentioned air duct structure, the air duct shell also includes an air duct top plate, which is parallel to the air duct bottom plate; the electric heating element has at least one first connecting part, and the air duct top plate has at least one second connecting part, and the first connecting part is connected to the second connecting part in a one-to-one correspondence.

[0014] In some technical solutions of the above-mentioned air duct structure, the air duct top plate is also provided with at least one enclosure, the electric heating element is partially located inside the enclosure, and the second connecting portion is located on the enclosure; the electric heating element is provided with at least one connecting plate, the connecting plate is abutted against the enclosure, and the first connecting portion is located on the connecting plate.

[0015] On the other hand, the present application provides an air conditioner indoor unit, comprising a shell and any of the above-mentioned air duct structures located in the shell.

[0016] The air duct structure and air-conditioning indoor unit provided in the present application, the air duct structure includes an air duct shell and at least one electric heating element, the air duct shell includes an air duct bottom plate, the air duct bottom plate has at least one mounting groove, one end of the electric heating element is correspondingly located in the mounting groove, the surrounding side of the mounting groove has at least one drain port, the condensed water in the mounting groove is discharged to the water receiving pan of the air-conditioning indoor unit through the drain port to avoid the accumulation of condensed water in the mounting groove, so that the electric heating element has less contact with the condensed water in the mounting groove, thereby preventing the electric heating element from getting damp or getting water-infiltrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 A schematic diagram of the structure of a partial air duct structure and a water receiving tray provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure without the electric heating element;

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of the center C;

[0023] Figure 6 for Figure 4 The enlarged schematic diagram of point D in the middle;

[0024] Figure 7 for Figure 1 Schematic diagram of the structure of the electric heating element;

[0025] Figure 8 for Figure 7 The enlarged schematic diagram of point E in the middle;

[0026] Fig. 9 for Figure 1 Schematic diagram of the partial structure of the middle air duct bottom plate.

[0027] Description of reference numerals:

[0028] 100-air duct housing;

[0029] 110-air duct bottom plate; 111-first step surface; 112-installation groove; 1121-drainage outlet; 1122-baffle; 1123-limiting rib; 113-second step surface; 114-guide groove; 1141-drainage hole; 115-drainage groove;

[0030] 120 - air duct top plate; 121 - enclosure; 122 - second connecting portion; 123 - positioning groove;

[0031] 130-support plate; 140-partition plate;

[0032] 200-electric heating element; 210-connecting plate; 211-first connecting portion; 220-positioning block; 230-retaining edge;

[0033] 300-drain tray; 400-fan.

[0034] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the embodiments of the present application, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific orientations, or to be constructed and operated in specific orientations. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In addition, the terms "disposed", "connected", and "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 a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection 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.

[0038] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein.

[0039] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] The electric heater is used to assist in heating the hot air in the air conditioner when the air conditioner is heating, so as to improve the heating effect of the air conditioner.

[0042] In the prior art, the indoor unit of the air conditioner includes an air duct housing, the air duct housing includes a bottom plate, a positioning groove is provided on the bottom plate, and one end of the electric heater is installed in the positioning groove. However, when the air conditioner is cooling, the air in the indoor unit of the air conditioner will liquefy when it encounters the electric heater with a lower temperature, and then a lot of condensed water will be generated on the surface of the electric heater. Under the action of gravity, the condensed water flows down along the surface of the electric heater and falls into the positioning groove. When a lot of condensed water accumulates in the positioning groove, the condensed water is more likely to contact the electric heater, thereby causing the electric heater to be damp or flooded.

[0043] Based on this, an embodiment of the present application provides a duct structure, including an air duct shell and at least one electric heating element, the air duct shell including an air duct bottom plate, the air duct bottom plate having at least one mounting groove, one end of the electric heating element being located correspondingly in the mounting groove, and the surrounding side of the mounting groove having at least one drain port, the condensed water in the mounting groove being discharged to a water receiving pan of an indoor unit of the air conditioner through the drain port to avoid accumulation of condensed water in the mounting groove, so as to reduce contact between the electric heating element and the condensed water in the mounting groove, thereby preventing the electric heating element from getting damp or getting infiltrated with water.

[0044] The following describes the embodiments of the present utility model in conjunction with the accompanying drawings.

[0045] Figure 1 A schematic diagram of the structure of a partial air duct structure and a water receiving tray provided in an embodiment of the present application; Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle; Figure 4 for Figure 1 Schematic diagram of the structure without the electric heating element; Figure 5 for Figure 4 The enlarged schematic diagram of the center C; Figure 6 for Figure 4 The enlarged schematic diagram of point D in the middle; Figure 7 for Figure 1 Schematic diagram of the structure of the electric heating element; Figure 8 for Figure 7 The enlarged schematic diagram of point E in the middle; Fig. 9 for Figure 1 Schematic diagram of the partial structure of the middle air duct bottom plate.

[0046] Reference Figures 1 to 9As shown, this embodiment provides an air duct structure for an air conditioner indoor unit, the air duct structure includes an air duct shell 100 and at least one electric heating element 200, the air duct shell 100 includes an air duct base plate 110; the air duct base plate 110 has at least one mounting groove 112, one end of the electric heating element 200 is correspondingly located in the mounting groove 112, and the surrounding side of the mounting groove 112 has at least one drain port 1121, and the drain port 1121 is configured to flow the condensed water in the mounting groove 112 to the water receiving tray 300 of the air conditioner indoor unit.

[0047] When the air conditioner indoor unit is cooling, the air in the air conditioner indoor unit encounters the electric heating element 200 with a lower surface temperature, and will liquefy to form condensed water on the surface of the electric heating element 200. The condensed water will flow down along the surface of the electric heating element 200 and drip into the installation groove 112.

[0048] The contour of the mounting groove 112 matches the contour of one end of the electric heating element 200 , and there is a gap between one end of the electric heating element 200 and the side wall of the mounting groove 112 for condensed water to flow, so that condensed water generated on the surface of the electric heating element 200 can flow into the mounting groove 112 .

[0049] In a specific implementation, the condensed water in the installation groove 112 flows out of the installation groove 112 from the drain port 1121 and flows into the water receiving tray 300 of the air-conditioning indoor unit. The water receiving tray 300 of the air-conditioning indoor unit discharges the condensed water to the outside of the air-conditioning indoor unit, thereby preventing the condensed water generated by the electric heating element 200 from accumulating in large quantities in the installation groove 112.

[0050] The air duct structure provided in the embodiment of the present application is configured by setting a mounting groove 112 on the air duct bottom plate 110 so that one end of the electric heating element 200 can be installed in the mounting groove 112, and by opening a drain port 1121 on the peripheral side of the mounting groove 112 so that condensed water in the mounting groove 112 can be promptly discharged to the water receiving tray 300 of the air conditioner indoor unit through the drain port 1121, thereby avoiding the accumulation of condensed water in the mounting groove 112, and reducing the contact between the electric heating element 200 and the condensed water in the mounting groove 112, thereby preventing the electric heating element 200 from being damp or water-infiltrated.

[0051] Reference Figure 1 , Figure 3 and Figure 6 As shown, in some embodiments, the drain port 1121 is located on the side wall of the mounting groove 112 .

[0052] Specifically, the condensed water in the installation groove 112 can flow out through the drainage port 1121 on the side wall of the installation groove 112 .

[0053] In some embodiments, the drain outlet 1121 can also be set at the bottom of the installation groove 112, and the water collection pan 300 of the air conditioner indoor unit is located below the air duct bottom plate 110. When condensed water drops to the bottom of the installation groove 112, it can directly flow through the drain outlet 1121 at the bottom of the installation groove 112 to the water collection pan 300 of the air conditioner indoor unit.

[0054] Reference Figure 3 and Figure 6 As shown, in a specific implementation, the bottom end of the drain port 1121 is located in the same plane as the bottom of the mounting groove 112 , so that all condensed water in the mounting groove 112 can be discharged through the drain port 1121 , thereby preventing condensed water from accumulating at the bottom of the mounting groove 112 .

[0055] It is understandable that the bottom of the installation groove 112 may be inclined toward the drain port 1121 so that the condensed water in the installation groove 112 flows toward the drain port 1121 under the action of gravity, thereby facilitating the discharge of the condensed water in the installation groove 112 .

[0056] Reference Figure 3 As shown, in some embodiments, one side of the mounting groove 112 has two baffles 1122 , a gap is provided between the two baffles 1122 , and the two baffles 1122 form a drainage port 1121 .

[0057] There is one drain port 1121, and the drain port 1121 is located between the two baffles 1122. By providing two baffles 1122, the structural strength of the side wall of the mounting groove 112 is increased, thereby avoiding affecting the structural strength of the mounting groove 112 due to the provision of the drain port 1121, and further ensuring the connection strength between the electric heating element 200 and the mounting groove 112.

[0058] It is understandable that the distance between the two baffles 1122 can be adaptively set according to actual needs, and this embodiment does not limit this.

[0059] Reference Figure 1 and Fig. 9 As shown, in a specific implementation, the air duct bottom plate 110 also has a guide groove 114, which is connected to the installation groove 112 through a drain port 1121; the bottom of the guide groove 114 has at least one drain hole 1141, and the drain hole 1141 is used to supply condensed water in the guide groove 114 to flow to the water receiving tray 300 of the air conditioner indoor unit.

[0060] The guide groove 114 is connected to the drain port 1121, so that the condensed water in the installation groove 112 can flow into the guide groove 114 through the drain port 1121. The drain hole 1141 is located at the bottom of the guide groove 114, and the drain hole 1141 is a through hole that penetrates the air duct bottom plate 110. The water receiving pan 300 of the air conditioner indoor unit is located below the air duct bottom plate 110, so that the condensed water in the guide groove 114 can flow into the water receiving pan 300 of the air conditioner indoor unit through the drain hole 1141.

[0061] Exemplarily, the number of drain holes 1141 is four, of which two drain holes 1141 are respectively located at the two ends of the bottom of the guide groove 114, and the remaining two drain holes 1141 are arranged at intervals at the bottom of the guide groove 114. The number of mounting grooves 112 is two, and the drain ports 1121 of the two mounting grooves 112 are both facing the middle area of ​​the guide groove 114, and the two drain ports 1121 are respectively close to the two drain holes 1141, so that the condensed water flowing out through the drain ports 1121 can flow through the drain holes 1141 to the water receiving tray 300 of the air conditioner indoor unit.

[0062] It is understandable that the peripheral side of the drainage hole 1141 is inclined toward the drainage hole 1141 to facilitate the condensed water in the guide groove 114 to flow to the drainage hole 1141 .

[0063] Reference Figure 4 , Figure 6 and Fig. 9 As shown, in a specific implementation, at least one drainage groove 115 is provided on the groove wall of the guide groove 114 , and each drainage groove 115 is respectively connected to each drainage port 1121 .

[0064] Specifically, the drain groove 115 is located between the bottom of the guide groove 114 and the drain port 1121 to connect the guide groove 114 and the drain port 1121. The drain port 1121 is located on one side of the mounting groove 112. Therefore, the mounting groove 112, the drain port 1121, the drain groove 115 and the guide groove 114 are connected in sequence, so that the condensed water in the mounting groove 112 flows into the guide groove 114 through the drain port 1121 and the drain groove 115 in sequence, and continues to flow into the water receiving tray 300 of the air conditioner indoor unit through the drain hole 1141.

[0065] In some embodiments, the bottom of the drainage groove 115 is inclined toward the guide groove 114 to facilitate the condensed water to flow into the guide groove 114 through the drainage groove 115 .

[0066] Exemplarily, there are two mounting grooves 112 and two drainage grooves 115 , and the two drainage grooves 115 correspond to the two mounting grooves 112 , respectively.

[0067] Reference Figure 1 , Figure 3 and Fig. 9As shown, in some embodiments, the air duct bottom plate 110 has a first step surface 111 and a second step surface 113 , the first step surface 111 is higher than the second step surface 113 , the mounting groove 112 is located on the first step surface 111 , and the guide groove 114 is located on the second step surface 113 .

[0068] Among them, the first step surface 111 and the second step surface 113 are both horizontal planes, the first step surface 111 is higher than the second step surface, and the bottom of the installation groove 112 is higher than the bottom of the guide groove 114, so that the condensed water in the installation groove 112 can flow into the guide groove 114.

[0069] It is understandable that the drain groove 115 is located on the second step surface 113, and the bottom of the drain groove 115 and the bottom end of the drain port 1121 are located on the same plane, so that the condensed water in the mounting groove 112 can flow into the drain groove 115 through the drain port 1121. The bottom of the drain groove 115 is higher than the bottom of the guide groove 114, so that the condensed water can flow into the guide groove 114 through the drain groove 115.

[0070] Exemplarily, each baffle 1122 is located between the first step surface 111 and the second step surface 113 so that the drain port 1121 faces the second step surface 113, the guide groove 114 is located on the second step surface 113, and the drain port 1121 faces the guide groove 114 to facilitate condensed water to flow from the drain port 1121 into the guide groove 114.

[0071] Specifically, the air duct structure further includes a heat exchanger and at least one fan 400, the two ends of the heat exchanger are respectively mounted on the air duct bottom plate 110 and the air duct top plate 120, the two ends of the fan 400 are respectively mounted on the air duct bottom plate 110 and the air duct top plate 120, and each electric heating element 200 is located between the fan 400 and the heat exchanger. The heat exchanger is mounted on the second step surface, and the heat exchanger is located above the guide groove 114, so that the condensed water generated on the surface of the heat exchanger can flow into the guide groove 114, and flow into the water receiving tray 300 of the indoor unit of the air conditioner through the drainage hole 1141.

[0072] Exemplarily, the air duct structure includes two fans 400 and two electric heating elements 200, and the air duct housing 100 further includes a partition plate 140, the two fans 400 are respectively located on both sides of the partition plate 140, the two electric heating elements 200 are also respectively located on both sides of the partition plate 140, and the two electric heating elements 200 are respectively located between the heat exchanger and the two fans 400. It can be understood that the number of the mounting grooves 112 is two, the two mounting grooves 112 are respectively located on both sides of the partition plate 140, and the two electric heating elements 200 are respectively located in the two mounting grooves 112.

[0073] Reference Figure 1 , Figure 2 and Figure 5As shown, in a specific implementation, the air duct housing 100 also includes an air duct top plate 120, which is parallel to the air duct bottom plate 110; the electric heating element 200 has at least one first connection portion 211, and the air duct top plate 120 has at least one second connection portion 122, and the first connection portion 211 is connected to the second connection portion 122 in a one-to-one correspondence.

[0074] The air duct housing 100 further includes a support plate 130 , and the support plate 130 connects the air duct top plate 120 and the air duct bottom plate 110 to support the air duct top plate 120 .

[0075] One end of the electric heating element 200 is located in the mounting groove 112 , and the other end of the electric heating element 200 is connected to the air duct top plate 120 , so that the connection between the electric heating element 200 and the air duct housing 100 is more stable.

[0076] It is understandable that the first connection portion 211 and the second connection portion 122 are detachably connected to facilitate the removal of the electric heating element 200 during maintenance. For example, the first connection portion 211 and the second connection portion 122 are connected in a threaded connection or a clamping connection.

[0077] Reference Figure 1 , Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, the air duct top plate 120 also has at least one enclosure 121, the electric heating element 200 is partially located in the enclosure 121, and the second connecting portion 122 is located on the enclosure 121; the electric heating element 200 has at least one connecting plate 210, the connecting plate 210 is abutted against the enclosure 121, and the first connecting portion 211 is located on the connecting plate 210.

[0078] By providing the enclosure 121 and the connecting plate 210 , the first connecting portion 211 is located on the connecting plate 210 , and the second connecting portion 122 is located on the enclosure 121 , so as to facilitate the connection between the first connecting portion 211 and the second connecting portion 122 .

[0079] Specifically, the air duct structure further includes at least one connecting member, the first connecting portion 211 is a first connecting hole, the second connecting portion 122 is a second connecting hole, and each connecting member is connected to each second connecting hole via each first connecting hole in a one-to-one correspondence.

[0080] For example, the connecting member is a screw, which has a high connection strength and a relatively stable and reliable connection structure. There are two connecting plates 210 on the electric heating element 200, one first connecting portion 211 on the connecting plate 210, and two second connecting portions 122 on the enclosure 121. The two second connecting portions 122 are arranged opposite to each other, so that the connection between the electric heating element 200 and the enclosure 121 is relatively stable, and the electric heating element 200 is not easy to shake.

[0081] The electric heating element 200 has a rib 230 , and the connecting plate 210 is disposed on the rib 230 . The rib 230 abuts against the peripheral side of the enclosure 121 to limit the electric heating element 200 , thereby limiting the electric heating element 200 from moving toward the air duct bottom plate 110 .

[0082] In some embodiments, a positioning groove 123 is provided on the inner side of the enclosure 121, and a positioning block 220 is provided on the electric heating element 200. The positioning block 220 is located below the retaining edge 230, and the positioning block 220 matches the positioning groove 123. The positioning block 220 is inserted into the positioning groove 123, thereby providing positioning for the electric heating element 200.

[0083] In a specific implementation, when installing the electric heating element 200, one end of the electric heating element 200 is inserted into the enclosure 121 from the side of the duct top plate 120 facing away from the duct bottom plate 110, and moves toward the duct bottom plate 110 until one end of the electric heating element 200 extends into the installation groove 112. At this time, the retaining edge of the electric heating element 200 abuts against the side of the enclosure 121 facing away from the duct bottom plate 110 to limit the electric heating element 200 from continuing to move toward the duct bottom plate 110, thereby limiting the electric heating element 200.

[0084] It can be understood that the side wall of the mounting groove 112 has a plurality of spaced-apart limiting ribs 1123, which abut against the other end of the electric heating element 200 to support the electric heating element 200, while providing a gap between the electric heating element 200 and the bottom of the mounting groove 112 for condensed water to flow, so as to facilitate the condensed water to flow out of the mounting groove 112.

[0085] On the basis of the above-mentioned embodiment, this embodiment provides an air conditioner indoor unit, including a shell and an air duct structure located in the shell.

[0086] Among them, the structure of the air duct structure has been described in detail in the above embodiment and will not be repeated here.

[0087] The air conditioner indoor unit further includes a water receiving tray 300, which is located below the air duct structure and connected to the air duct bottom plate 110. The water receiving tray 300 is used to collect condensed water generated on the air duct structure and discharge the condensed water to the outside of the air conditioner indoor unit.

[0088] The air duct structure of the air conditioner indoor unit provided in the embodiment of the present application is provided with a drain port 1121 on the side of the installation groove 112 of the air duct bottom plate 110, so that condensed water in the installation groove 112 can be discharged to the water receiving tray 300 in time through the drain port 1121, thereby avoiding the accumulation of condensed water in the installation groove 112 and preventing the electric heating element 200 from getting damp or getting water-infiltrated.

[0089] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application 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 replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A duct structure for an indoor unit of an air conditioner, characterized in that: The air duct structure comprises an air duct housing and at least one electric heating element, and the air duct housing comprises an air duct bottom plate; The air duct bottom plate is provided with at least one mounting groove, one end of the electric heating element is correspondingly located in the mounting groove, and the surrounding side of the mounting groove is provided with at least one drain port, and the drain port is configured to flow the condensed water in the mounting groove to the water receiving pan of the air conditioner indoor unit.

2. The air duct structure according to claim 1, characterized in that: The drain port is located on the side wall of the mounting groove.

3. The air duct structure according to claim 2, characterized in that: The bottom end of the drain port and the bottom of the installation groove are located in the same plane.

4. The air duct structure according to claim 3, characterized in that: One side of the installation groove is provided with two baffles, a distance is provided between the two baffles, and the two baffles form the drainage port.

5. The air duct structure according to claim 2, characterized in that: The air duct bottom plate is also provided with a guide groove, and the guide groove is connected with the installation groove through the drain port; The bottom of the guide groove is provided with at least one drainage hole, and the drainage hole is used for allowing the condensed water in the guide groove to flow to the water receiving tray of the indoor unit of the air conditioner.

6. The air duct structure according to claim 5, characterized in that: The groove wall of the guide groove is provided with at least one drainage groove, and each drainage groove is respectively connected with each drainage port.

7. The air duct structure according to claim 6, characterized in that: The air duct bottom plate has a first step surface and a second step surface, the first step surface is higher than the second step surface, the mounting groove is located on the first step surface, and the guide groove is located on the second step surface.

8. The air duct structure according to any one of claims 1 to 7, characterized in that: The air duct housing further comprises an air duct top plate, and the air duct top plate is parallel to the air duct bottom plate; The electric heating element has at least one first connection portion, and the air duct top plate has at least one second connection portion, and the first connection portion is connected to the second connection portion in a one-to-one correspondence.

9. The air duct structure according to claim 8, characterized in that: The air duct top plate also has at least one enclosure, the electric heating element is partially located in the enclosure, and the second connecting portion is located on the enclosure; The electric heating element is provided with at least one connecting plate, the connecting plate is in contact with the enclosure, and the first connecting portion is located on the connecting plate.

10. An air conditioner indoor unit, characterized in that: The invention comprises a shell and an air duct structure according to any one of claims 1 to 9 located inside the shell.

Images