Air conditioner indoor unit and vehicle

Abstract

The present invention relates to an air-conditioning indoor unit and a vehicle. The air-conditioning indoor unit comprises: a fresh air duct (17); a heat exchange duct (12) arranged side by side with the fresh air duct (17); and a partition located between the fresh air duct (17) and the heat exchange duct (12). The partition comprises a first partition (21) and a second partition (23) arranged in sequence along the extension direction of the fresh air duct (17). A labyrinth sealing structure (2) is provided between the first partition (21) and the second partition (23). The labyrinth sealing structure (2) is provided on the partition between the fresh air duct (17) and the heat exchange duct (12), thereby improving the problem in the prior art that accumulated water in the fresh air duct 17 easily enters the duct room through the heat exchange duct (12).

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to an air-conditioning indoor unit and a vehicle. Background Art

[0002] In order to adjust the environmental conditions inside a vehicle, especially a car, a vehicle air conditioner is installed on the vehicle. To save space inside the vehicle, high-power vehicle air conditioners are generally installed in a roof-mounted structure, that is, installed on the top of the car.

[0003] The interior of an air conditioner is divided into an internal circulation duct and the external environment, separated by partitions. The partitions are typically sealed using sealant, sponge pads, and rubber pads to ensure the internal circulation duct remains sealed. Because ceiling-mounted air conditioners are exposed to harsh environments such as high temperatures and rain, the interior of the unit is inevitably exposed to harsh conditions such as high temperatures and rain. Sealant, sponge, and rubber pads quickly age and fail, making the internal circulation duct ineffective. This can lead to rainwater entering the interior through the failed seals, severely compromising the user experience. Summary of the Invention

[0004] The present invention aims to provide an air-conditioning indoor unit and a vehicle, so as to improve the problem in the prior art that rainwater enters the room due to sealing problems.

[0005] According to one aspect of an embodiment of the present invention, the present invention provides an air conditioner indoor unit, the air conditioner indoor unit comprising:

[0006] Fresh air duct;

[0007] The heat exchange air duct is arranged side by side with the fresh air duct;

[0008] The partition is located between the fresh air channel and the heat exchange air channel. The partition includes a first partition and a second partition arranged in sequence along the extension direction of the fresh air channel. A labyrinth sealing structure is provided between the first partition and the second partition.

[0009] In some embodiments, the labyrinth seal structure comprises:

[0010] The first sealing tooth structure is provided at one end of the first partition plate close to the second partition plate, and the first sealing tooth structure includes a plurality of first sealing teeth arranged side by side.

[0011] The second sealing tooth structure is provided at one end of the second partition plate close to the first partition plate. The second sealing tooth structure comprises a plurality of second sealing teeth arranged side by side. The second sealing teeth are engaged with the first sealing teeth.

[0012] In some embodiments, the plurality of first sealing teeth extend along a direction intersecting the first separator; and the plurality of second sealing teeth extend along a direction intersecting the second separator.

[0013] In some embodiments, a water baffle is provided at one end of the first sealing tooth structure close to the fresh air channel, and the water baffle is located on the side of the second sealing tooth structure close to the fresh air channel, so that the water baffle pushes the first sealing tooth structure toward the second sealing tooth structure under the pressure of water accumulated in the fresh air channel.

[0014] In some embodiments, the angle between the first side of the first sealing tooth close to the first partition and the horizontal direction is 60° to 90°, and the angle between the second side of the second sealing tooth close to the second partition and the horizontal direction is 60° to 90°.

[0015] In some embodiments, the air-conditioning indoor unit is a vehicle air-conditioning indoor unit.

[0016] In some embodiments, the air conditioner indoor unit also includes an air inlet channel arranged side by side with the heat exchange duct, a heat exchanger located between the air inlet channel and the heat exchange duct, and a first fan for driving the air introduced into the air inlet channel to flow through the heat exchanger to the heat exchange duct.

[0017] In some embodiments, the air inlet channel extends in a vertical direction, and the air conditioner indoor unit further includes an air inlet located at the bottom thereof and connected to the air inlet channel.

[0018] In some embodiments, the heat exchange air duct extends in a vertical direction, and the air conditioner indoor unit further includes an air outlet located at the bottom thereof and connected to the heat exchange air duct.

[0019] According to another aspect of the present invention, a vehicle is provided, comprising the above-mentioned air-conditioning indoor unit.

[0020] By applying the technical solution of the present application, a labyrinth-type sealing structure is provided on the partition between the fresh air duct and the heat exchange duct, which improves the problem in the prior art that accumulated water in the fresh air duct can easily enter the duct chamber through the heat exchange duct.

[0021] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of an air-conditioning indoor unit according to an embodiment of the present invention is shown;

[0024] Figure 2 A schematic structural diagram showing a labyrinth seal structure of an air conditioner indoor unit according to an embodiment of the present invention is shown;

[0025] Figure 3 A schematic structural diagram showing an air conditioner indoor unit according to an embodiment of the present invention in a state where water accumulates in the fresh air duct; and

[0026] Figure 4 A schematic diagram of a labyrinth sealing structure in an air-conditioning room with water accumulated in the fresh air duct according to an embodiment of the present invention is shown.

[0027] In the figure: 1. Air conditioner indoor unit; 11. Air inlet duct; 12. Heat exchange duct; 13. Heat exchanger; 14. Air inlet; 15. Air outlet; 16. Second fan; 17. Fresh air duct; 2. Labyrinth sealing structure; 21. First partition; 22. First sealing tooth; 23. Second partition; 24. Second sealing tooth; 25. Water retaining plate; 26. First side; 27. Second side. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Combine Figures 1 to 4 As shown, the air conditioner indoor unit of this embodiment includes a fresh air duct 17, a heat exchange duct 12, and a partition. The heat exchange duct 12 and the fresh air duct 17 are arranged side by side; the partition is located between the fresh air duct 17 and the heat exchange duct 12. The partition includes a first partition 21 and a second partition 23 arranged in sequence along the extension direction of the fresh air duct 17. A labyrinth seal structure 2 is provided between the first partition 21 and the second partition 23.

[0030] In this embodiment, the partition between the fresh air duct 17 and the heat exchange duct 12 is provided with a labyrinth sealing structure 2, which improves the problem in the prior art that accumulated water in the fresh air duct 17 can easily enter the duct chamber through the heat exchange duct 12.

[0031] The labyrinth seal structure 2 includes a first sealing tooth structure and a second sealing tooth structure. The labyrinth seal structure 2 is provided on one side of the partition plate close to the fresh air passage 17 .

[0032] The first sealing tooth structure is provided at one end of the first separator 21 near the second separator 23 and includes a plurality of first sealing teeth 22 arranged side by side. The second sealing tooth structure is provided at one end of the second separator 23 near the first separator 21 and includes a plurality of second sealing teeth 24 arranged side by side. The second sealing teeth 24 mesh with the first sealing teeth 22.

[0033] The plurality of first sealing teeth 22 extend in a direction intersecting the first separator 21 ; the plurality of second sealing teeth 24 extend in a direction intersecting the second separator 23 .

[0034] A water baffle 25 is provided at one end of the first sealing tooth structure close to the fresh air channel 17, and the water baffle 25 is located on the side of the second sealing tooth structure close to the fresh air channel 17, so that the water baffle 25 pushes the first sealing tooth structure toward the second sealing tooth structure under the pressure of the accumulated water in the fresh air channel 17.

[0035] The first side edge 26 of the first sealing tooth 22 close to the first partition plate 21 has an angle of 60° to 90° with the horizontal direction. The second side edge 27 of the second sealing tooth 24 close to the second partition plate 23 has an angle of 60° to 90° with the horizontal direction.

[0036] In some embodiments, the air-conditioning indoor unit is a vehicle air-conditioning indoor unit.

[0037] In some embodiments, the air conditioner indoor unit also includes an air inlet channel 11 arranged side by side with the heat exchange duct 12, a heat exchanger 13 located between the air inlet channel 11 and the heat exchange duct 12, and a first fan for driving the air introduced into the air inlet channel 11 to flow through the heat exchanger 13 to the heat exchange duct 12.

[0038] The air inlet channel 11 extends in a vertical direction, and the air conditioner indoor unit further includes an air inlet 14 located at the bottom thereof and communicating with the air inlet channel 11 .

[0039] In some embodiments, the heat exchange duct 12 extends in a vertical direction, and the air conditioner indoor unit further includes an air outlet 15 located at the bottom thereof and connected to the heat exchange duct 12 .

[0040] like Figure 2As shown, the labyrinth sealing structure 2 of the present invention includes a first partition 21 and a first sealing tooth 22 arranged thereon, a second partition 23 and a second sealing tooth 24 arranged thereon. The first sealing tooth 22 is provided with at least 5 teeth, and the second sealing tooth 24 is provided with at least 3 teeth. The number of first sealing teeth 22 is n+2, and the number of second sealing teeth 24 is n. The angles of the first sealing teeth 22 and the second sealing teeth 24 are consistent, and the tooth angle is 50° to 70°. The first side edge 26 of the first sealing tooth 22 close to the inner circulation air duct is at an angle of 60° to 90° with the horizontal direction. The second side edge 27 of the second sealing tooth 24 away from the inner circulation air duct is at an angle of 60° to 90° with the horizontal direction. A downward water baffle 25 is provided at the first partition 21 away from the inner circulation air duct.

[0041] like Figure 3 、 Figure 4 As shown, the air conditioning fresh air duct 17 is connected to the natural environment outside the air conditioning unit through the second fan 16. When the air conditioning unit encounters severe rainy weather, a large amount of rainwater flows into the fresh air duct 17 of the air conditioning indoor unit 1 through the second fan 16. The rainwater cannot be drained away in time, and the rainwater surface 3 is higher than the labyrinth sealing structure 2.

[0042] When liquid flows through a labyrinth seal, friction caused by the liquid's viscosity slows the flow rate and reduces the flow rate. The friction effect is composed of friction along the flow path and localized wear resistance. The former is related to the length and cross-sectional shape of the channel, while the latter is related to the number of bends and geometry of the labyrinth. Generally speaking, when the flow path is long, the bends are sharp, and the teeth are pointed, the resistance is high, the pressure drop is significant, and the leakage rate is reduced.

[0043] When water seeps into the gap between the first partition 21 and the second partition 23 at point A, the present invention effectively increases the resistance and the pressure difference loss by setting the pointed angle of the meshing first sealing teeth 22 and the second sealing teeth 24 to 50° to 70°, thereby effectively preventing water from entering the internal circulation air duct.

[0044] At this time, water tends to flow from position A of the fresh air duct 17 to position B of the internal circulation duct. The water pressure drives the first partition 21 from position A to position B through the water baffle 25, forcing the gap to become wider, further increasing the water flow resistance and preventing water from entering the internal circulation duct.

[0045] By using the waterproof structure of the present invention, there is no need to add heavy rubber pads and sealants between the partitions of the air conditioner, thereby reducing the weight and meeting the air conditioner with strict weight requirements.

[0046] According to another aspect of the present invention, a vehicle is provided, comprising the above-mentioned air-conditioning indoor unit.

[0047] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A roof-mounted air-conditioning indoor unit for a vehicle, characterized in that: include: Fresh air duct (17); A heat exchange air duct (12) is arranged side by side with the fresh air duct (17); A partition is located between the fresh air channel (17) and the heat exchange air channel (12), the partition comprising a first partition (21) and a second partition (23) sequentially arranged along the extension direction of the fresh air channel (17), a labyrinth sealing structure (2) being provided between the first partition (21) and the second partition (23), The labyrinth sealing structure (2) comprises: A first sealing tooth structure is provided at one end of the first partition plate (21) close to the second partition plate (23), the first sealing tooth structure comprising a plurality of first sealing teeth (22) arranged side by side, A second sealing tooth structure is provided at one end of the second partition plate (23) close to the first partition plate (21), the second sealing tooth structure comprises a plurality of second sealing teeth (24) arranged side by side, the second sealing teeth (24) meshing with the first sealing teeth (22), The fresh air passage (17) is connected to the natural environment outside the air conditioner via the second fan (16). Rainwater poured into the fresh air passage (17) via the second fan (16) cannot be drained away in time, and the rainwater surface (3) is higher than the labyrinth sealing structure (2).

2. The air conditioner indoor unit according to claim 1, characterized in that: The plurality of first sealing teeth (22) extend along a direction intersecting the first partition (21); and the plurality of second sealing teeth (24) extend along a direction intersecting the second partition (23).

3. The air conditioner indoor unit according to claim 1, characterized in that: A water baffle (25) is provided at one end of the first sealing tooth structure close to the fresh air channel (17), and the water baffle (25) is located on a side of the second sealing tooth structure close to the fresh air channel (17), so that the water baffle (25) pushes the first sealing tooth structure toward the second sealing tooth structure under the pressure of the accumulated water in the fresh air channel (17).

4. The air conditioner indoor unit according to claim 1, characterized in that: The angle between the first side edge (26) of the first sealing tooth (22) on the side close to the first partition (21) and the horizontal direction is 60° to 90°, and the angle between the second side edge (27) of the second sealing tooth (24) on the side close to the second partition (23) and the horizontal direction is 60° to 90°.

5. The air conditioner indoor unit according to claim 1, characterized in that: The air-conditioning indoor unit is a vehicle air-conditioning indoor unit.

6. The air conditioner indoor unit according to claim 1, characterized in that: The invention also includes an air inlet channel (11) arranged side by side with the heat exchange air duct (12), a heat exchanger (13) located between the air inlet channel (11) and the heat exchange air duct (12), and a first fan for driving the air introduced by the air inlet channel (11) to flow through the heat exchanger (13) to the heat exchange air duct (12).

7. The air conditioner indoor unit according to claim 6, characterized in that: The air inlet channel (11) extends in a vertical direction, and the air conditioner indoor unit further comprises an air inlet (14) located at its bottom and in communication with the air inlet channel (11).

8. The air conditioner indoor unit according to claim 6, characterized in that: The heat exchange air duct (12) extends in a vertical direction, and the air conditioner indoor unit further comprises an air outlet (15) located at the bottom thereof and in communication with the heat exchange air duct (12).

9. A vehicle, characterized in that: An air-conditioning indoor unit comprising the air-conditioning indoor unit according to any one of claims 1 to 8.

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