Double-layer air conditioner air inlet box and air conditioner

Abstract

This invention relates to the field of automotive air conditioning technology, and discloses a dual-layer flow air conditioning intake box and an automotive air conditioner. The dual-layer flow air conditioning intake box includes a housing, an inner circulation damper, and an outer circulation damper. The housing contains independent inner and outer circulation ducts, with the air inlet of the inner circulation duct at the same height as the air inlet of the outer circulation duct. The inner circulation damper is mounted on the inner circulation duct and rotatably connected to the housing; the outer circulation damper is mounted on the outer circulation duct and rotatably connected to the housing, with the outer circulation damper at the same height as the inner circulation damper. This dual-layer flow air conditioning intake box, while ensuring sufficient airflow, has a smaller height dimension, thereby reducing the overall volume and weight of the dual-layer flow air conditioning intake box and facilitating the full utilization of vehicle interior space.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, and in particular to a dual-layer air conditioning air intake box and air conditioner. Background Technology

[0002] Since new energy vehicles do not have engines, they cannot use traditional engine-based heating methods. Considering the need for long driving range in new energy vehicles, a heating method using a heat pump combined with a dual-layer air intake box is adopted. During heating, the lower layer air intake circulation is used, while the upper layer air intake circulation is used for defogging. This reduces the heat load and prevents windows from fogging up. At the same time, fresh air is continuously injected into the passenger cabin, greatly improving comfort.

[0003] Currently, the internal and external circulation dampers of dual-layer automotive air conditioning air intake boxes on the market are set independently, and the internal and external circulation dampers are set at intervals in the vertical direction, resulting in a large size and heavy weight of the air intake box in the vertical direction, which is not conducive to the full utilization of the vehicle's interior space.

[0004] Therefore, there is an urgent need to propose a dual-layer flow air inlet box and air conditioner to solve the above problems. Summary of the Invention

[0005] According to one aspect of the present invention, a dual-layer air conditioning air intake box is provided, which has a smaller dimension in the height direction while ensuring air volume, thereby reducing the overall volume and weight of the dual-layer air conditioning air intake box and making full use of the vehicle interior space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The dual-layer air conditioning inlet box includes:

[0008] The housing has an independent internal circulation duct and an external circulation duct inside, and the air inlet of the internal circulation duct is at the same height as the air inlet of the external circulation duct.

[0009] An internal circulation damper is installed on the internal circulation duct and is rotatably connected to the housing.

[0010] An external circulation damper is installed on the external circulation duct and is rotatably connected to the housing. The external circulation damper is at the same height as the internal circulation damper.

[0011] Optionally, the outer edge of the internal circulation damper is provided with a first sealing element, which is fitted against the inner wall of the internal circulation duct; and / or,

[0012] The outer edge of the external circulation damper is provided with a second sealing element, which is attached to the inner wall of the external circulation duct.

[0013] Optionally, the internal circulation damper includes a first windward plate and first connecting plates disposed on both sides of the first windward plate. The plane containing the first sidewalls of the two first connecting plates is the first windward surface. When the air inlet of the internal circulation duct is opposite to the first windward surface, the internal circulation duct is open. The plane containing the second sidewalls of the two first connecting plates is the first air outlet surface. The area of ​​the first windward surface is larger than the area of ​​the first air outlet surface; and / or,

[0014] The external circulation damper includes a second windward plate and second connecting plates disposed on both sides of the second windward plate. The plane containing the first sidewalls of the two second connecting plates is the second windward surface. When the air inlet of the external circulation duct is opposite to the second windward surface, the external circulation duct is opened. The plane containing the second sidewalls of the two second connecting plates is the second air outlet surface. The area of ​​the second windward surface is larger than the area of ​​the second air outlet surface.

[0015] Optionally, the dual-layer air conditioning inlet box further includes:

[0016] The inner damper shaft is rotatably connected to the housing, and the two first connecting plates are connected to the inner damper shaft. The inner circulation damper rotates synchronously with the inner damper shaft.

[0017] The outer damper shaft is rotatably connected to the housing, and the two second connecting plates are connected to the outer damper shaft. The outer circulation damper rotates synchronously with the outer damper shaft.

[0018] Optionally, the first sidewall of the first connecting plate is arc-shaped, and the first sidewall of the first connecting plate bends away from the external damper pivot.

[0019] The first sidewall of the second connecting plate is arc-shaped and bends away from the inner damper pivot.

[0020] Optionally, the dual-layer air conditioning inlet box further includes:

[0021] An actuator is driven and connected to both the inner damper shaft and the outer damper shaft. The actuator controls the opening of the inner circulation duct by controlling the rotation of the inner damper shaft, and controls the opening of the outer circulation duct by controlling the rotation of the outer damper shaft.

[0022] Optionally, there are two internal circulation ducts, which are symmetrically arranged on both sides of the external circulation duct.

[0023] Optionally, the dual-layer air conditioning air inlet box further includes a partition, which is disposed inside the housing and divides the space inside the housing into the independent internal circulation air duct and the external circulation air duct.

[0024] Optionally, the housing includes a first portion and a second portion, which are fastened together to form the housing.

[0025] According to another aspect of the present invention, the present invention also provides an air conditioner, including a blower and a dual-layer flow air inlet box as described in any of the above technical solutions, wherein the dual-layer flow air inlet box is disposed above the blower and communicates with the blower.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention provides a dual-layer air conditioning air intake box, including a housing, an inner circulation damper, and an outer circulation damper. The inner and outer circulation dampers are at the same height. Compared to the prior art where the inner and outer circulation dampers are spaced apart along the height direction, this reduces the height dimension of the dual-layer air conditioning air intake box, thereby reducing its overall volume and weight, which is beneficial for making full use of vehicle interior space.

[0028] By setting the air inlet of the internal circulation duct to be at the same height as the air inlet of the external circulation duct, the height dimension of the dual-layer air conditioner air inlet box is further reduced, making the structure of the dual-layer air conditioner air inlet box more compact and occupying less space. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the dual-layer flow air conditioning inlet box provided in an embodiment of the present invention;

[0030] Figure 2 This is a cross-sectional view of the dual-layer flow air conditioning inlet box provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the shell structure provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal circulation damper from a first perspective provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the internal circulation damper from a second perspective provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the external circulation damper from a first perspective provided in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the external circulation damper from a second perspective, provided in an embodiment of the present invention.

[0036] In the picture:

[0037] 100. Housing; 110. Internal circulation air duct; 120. External circulation air duct; 130. First section; 140. Second section; 200. Internal circulation damper; 210. First windward plate; 220. First connecting plate; 230. First windward surface; 240. First air outlet surface; 300. External circulation damper; 310. Second windward plate; 320. Second connecting plate; 330. Second windward surface; 340. Second air outlet surface; 400. First seal; 500. Second seal; 600. Internal damper shaft; 700. External damper shaft; 800. Actuator; 900. Partition. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] This embodiment provides a dual-layer air conditioning air intake box, which, while ensuring airflow, has a smaller dimension in the height direction, thereby reducing the overall volume and weight of the dual-layer air conditioning air intake box and facilitating the full utilization of vehicle interior space.

[0043] Specifically, such as Figures 1-3 As shown, the dual-layer air conditioning air intake box includes a housing 100, an internal circulation damper 200, and an external circulation damper 300. The housing 100 contains independent internal circulation ducts 110 and external circulation ducts 120. Air from inside the vehicle enters through the internal circulation duct 110, and fresh air from outside the vehicle enters through the external circulation duct 120. Normally, air from inside the vehicle enters the lower layer of the air conditioning blower through the internal circulation duct 110 for heating, while fresh air from outside the vehicle enters the upper layer of the air conditioning blower through the external circulation duct 120 for defogging. Furthermore, as... Figure 2 As shown, letter A represents internal circulation air intake, and letter B represents external circulation air intake. The air inlet of the internal circulation duct 110 and the air inlet of the external circulation duct 120 are at the same height. Compared with the prior art where the air inlets of the external circulation duct 120 and the internal circulation duct 110 are spaced apart along the height direction, the size of the aforementioned dual-layer flow air conditioning air intake box along the height direction is reduced. Both the internal circulation damper 200 and the external circulation damper 300 are rotatably connected to the housing 100. The internal circulation damper 200 is installed on the internal circulation duct 110 and is used to control the opening and closing of the internal circulation duct 110. The external circulation damper 300 is installed on the external circulation duct 120 and is used to control the opening and closing of the external circulation duct 120. See also... Figure 2 The external circulation damper 300 and the internal circulation damper 200 are at the same height. Compared with the prior art where the internal circulation damper 200 and the external circulation damper 300 are spaced apart along the height direction, the size of the dual-layer air conditioning air intake box in the height direction is reduced, thereby reducing the overall volume and weight of the dual-layer air conditioning air intake box, which is conducive to the full utilization of the vehicle interior space.

[0044] It is worth noting that the aforementioned dual-layer flow air conditioning inlet box has three operating modes, namely:

[0045] Pure internal circulation mode: the internal circulation duct 110 is open and the external circulation duct 120 is closed. At this time, only the air inside the vehicle can enter the above-mentioned dual-layer air conditioning air intake box.

[0046] Pure external circulation mode: the external circulation duct 120 is open and the internal circulation duct 110 is closed. At this time, only fresh air from outside the vehicle can enter the above-mentioned dual-layer air conditioning air intake box.

[0047] Internal / external circulation mode (dual-layer flow mode): Both the internal circulation duct 110 and the external circulation duct 120 are open, allowing both interior and exterior fresh air to enter the aforementioned dual-layer flow air conditioning intake box. Figure 1 The state shown is the state of the internal circulation damper 200 and the external circulation damper 300 in the internal and external circulation modes.

[0048] Further, see also Figure 1 A first sealing element 400 is provided on the outer edge of the internal circulation damper 200, and the first sealing element 400 is attached to the inner wall of the internal circulation duct 110. By providing the first sealing element 400, the sealing performance between the outer edge of the internal circulation damper 200 and the inner wall of the internal circulation duct 110 is improved, preventing air from entering the housing 100 through the gap between the internal circulation damper 200 and the inner wall of the internal circulation duct 110 and affecting the air guiding performance of the internal circulation damper 200. The first sealing element 400 is optional, but not limited to, a sealing ring. Similarly, a second sealing element 500 can also be provided on the outer edge of the external circulation damper 300, and the second sealing element 500 is attached to the inner wall of the external circulation duct 120. By setting the second sealing element 500, it is beneficial to improve the sealing performance between the outer edge of the external circulation damper 300 and the inner wall of the external circulation duct 120, and prevent wind from entering the housing 100 through the gap between the external circulation damper 300 and the inner wall of the external circulation duct 120, thus affecting the air guiding performance of the external circulation damper 300.

[0049] Further, see also Figure 1 and Figure 3 The aforementioned dual-layer air conditioning inlet box also includes a partition 900, which is disposed within the housing 100 to divide the space within the housing 100 into independent internal circulation air ducts 110 and external circulation air ducts 120. Optionally, the partition 900 can be an integral structure with the housing 100, such as by injection molding, which facilitates processing and is suitable for mass production.

[0050] Preferably, in this embodiment, two internal circulation ducts 110 are provided, symmetrically arranged on both sides of the external circulation duct 120. Compared with the prior art where only one internal circulation duct 110 is provided on one side of the external circulation duct 120, this increases the air intake volume in internal circulation mode or internal / external circulation mode and reduces air intake noise. Correspondingly, in this embodiment, two partitions 900 are provided inside the housing 100, dividing the space inside the housing 100 into three independent air ducts, with the air duct in the middle being the external circulation duct 120. In other embodiments, the number of partitions 900 can also be other, depending on the number of air ducts.

[0051] Further, see also Figure 3 The housing 100 includes a first portion 130 and a second portion 140. The first portion 130 and the second portion 140 are connected by a snap-fit ​​connection to form the housing 100. This arrangement facilitates the processing of the housing 100. Optionally, the connection between the first portion 130 and the second portion 140 can be made by bolts, snap-fit, or a combination of both, depending on the actual needs.

[0052] Further, see also Figure 1 , Figure 4 and Figure 5 The internal circulation damper 200 includes a first windward plate 210 and two first connecting plates 220. The two first connecting plates 220 are respectively disposed on both sides of the first windward plate 210. The plane containing the first sidewalls of the two first connecting plates 220 is the first windward surface 230. When the air inlet of the internal circulation duct 110 is opposite to the first windward surface 230, the internal circulation duct 110 is open. The plane containing the second sidewalls of the two first connecting plates 220 is the first air outlet surface 240. The area of ​​the first windward surface 230 is larger than the area of ​​the first air outlet surface 240. By setting the area of ​​the first windward surface 230 to be larger than the area of ​​the first air outlet surface 240, the air intake area can be maximized, which is beneficial to increasing the air intake volume and reducing the air intake noise.

[0053] Optionally, in this embodiment, the first connecting plate 220 is triangular, with its long side connected to the first windward plate 210, and its two short sides being the first sidewall and the second sidewall of the first connecting plate 220, respectively. In other embodiments, the shape of the first connecting plate 220 can also be other, depending on actual needs.

[0054] Further, see also Figure 1 , Figure 6 and Figure 7 The external circulation damper 300 includes a second windward plate 310 and two second connecting plates 320. The two second connecting plates 320 are respectively disposed on both sides of the second windward plate 310. The plane containing the first sidewalls of the two second connecting plates 320 is the second windward surface 330. When the air inlet of the external circulation duct 120 is opposite to the second windward surface 330, the external circulation duct 120 is open, and the plane containing the second sidewalls of the two second connecting plates 320 is the second air outlet surface 340. The area of ​​the second windward surface 330 is larger than the area of ​​the second air outlet surface 340. By setting the area of ​​the second windward surface 330 to be larger than the area of ​​the second air outlet surface 340, the air intake area can be maximized, which is beneficial to increasing the air intake volume and reducing the air intake noise.

[0055] Optionally, in this embodiment, the second connecting plate 320 is triangular, with its long side connected to the second windward plate 310, and its two short sides being the first sidewall and the second sidewall of the second connecting plate 320, respectively. In other embodiments, the shape of the second connecting plate 320 can also be other, depending on actual needs.

[0056] It is worth noting that the structure of the internal circulation damper 200 can be the same as or different from that of the external circulation damper 300, depending on the actual needs.

[0057] Further, see also Figure 1 , Figures 4-7 The aforementioned dual-layer air conditioning inlet box also includes an inner damper shaft 600 and an outer damper shaft 700. The inner circulation damper 200 is rotatably connected to the housing 100 via the inner damper shaft 600. Specifically, the inner damper shaft 600 is rotatably connected to the housing 100, and two first connecting plates 220 are connected to the inner damper shaft 600. The inner circulation damper 200 rotates synchronously with the inner damper shaft 600. The outer circulation damper 300 is rotatably connected to the housing 100 via the outer damper shaft 700. Specifically, the outer damper shaft 700 is rotatably connected to the housing 100, and two second connecting plates 320 are connected to the outer damper shaft 700. The outer circulation damper 300 rotates synchronously with the outer damper shaft 700. The rotational connection between the inner circulation damper 200 and the housing 100, and the rotational connection between the outer circulation damper 300 and the housing 100 are achieved by the inner damper shaft 600 and the outer damper shaft 700. The structure is simple and can ensure the smoothness and stability of the rotation of the inner circulation damper 200 and the outer circulation damper 300.

[0058] Preferably, since the inner circulation damper 200 and the outer circulation damper 300 are at the same height in this embodiment, the inner damper shaft 600 and the outer damper shaft 700 are arranged in parallel. To avoid interference between the inner circulation damper 200 and the outer damper shaft 700 when rotating the inner circulation damper 200, the first sidewall of the first connecting plate 220 is set to an arc shape, and the first sidewall of the first connecting plate 220 bends away from the outer damper shaft 700. Similarly, to avoid interference between the outer circulation damper 300 and the inner damper shaft 600 when rotating the outer circulation damper 300, the first sidewall of the second connecting plate 320 is set to an arc shape, and the first sidewall of the second connecting plate 320 bends away from the inner damper shaft 600.

[0059] Further, see also Figure 1The aforementioned dual-layer air conditioning air inlet box also includes an actuator 800. The inner damper shaft 600 and the outer damper shaft 700 are both connected to the actuator 800. Specifically, the actuator 800 controls the opening of the inner circulation duct 110 by controlling the rotation of the inner damper shaft 600, and the actuator 800 controls the opening of the outer circulation duct 120 by controlling the rotation of the outer damper shaft 700.

[0060] Optionally, the actuator 800 can be a motor. To achieve the rotation of the inner damper shaft 600 and the outer damper shaft 700 using a single motor, a dial is provided. One end of the inner damper shaft 600 and one end of the outer damper shaft 700 are both connected to the dial. The actuator 800 can drive the dial to rotate, thereby achieving simultaneous rotation of the inner damper shaft 600 and the outer damper shaft 700. The dial can be, but is not limited to, a cam disc.

[0061] This embodiment also provides an air conditioner, which includes a blower and the aforementioned dual-layer air conditioning air intake box. The dual-layer air conditioning air intake box is located above the blower and is connected to the blower. Because this air conditioner uses the aforementioned dual-layer air conditioning air intake box, its height dimension is smaller, resulting in a smaller overall size and lighter weight, which is beneficial for meeting installation requirements when the vehicle space is limited.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A double-layer flow air conditioning inlet box, characterized in that, include: The housing (100) is provided with an independent internal circulation air duct (110) and an external circulation air duct (120), and the air inlet of the internal circulation air duct (110) is at the same height as the air inlet of the external circulation air duct (120). An internal circulation damper (200) is disposed on the internal circulation duct (110) and is rotatably connected to the housing (100); An external circulation damper (300) is disposed on the external circulation duct (120) and rotatably connected to the housing (100). The external circulation damper (300) and the internal circulation damper (200) are at the same height. The internal circulation damper (200) includes a first windward plate (210) and first connecting plates (220) disposed on both sides of the first windward plate (210). The plane containing the first sidewalls of the two first connecting plates (220) is the first windward surface (230). When the air inlet of the internal circulation duct (110) is opposite to the first windward surface (230), the internal circulation duct (110) is open. The plane containing the second sidewalls of the two first connecting plates (220) is the first air outlet surface (240). The area of ​​the first windward surface (230) is larger than the area of ​​the first air outlet surface (240); and / or, The external circulation damper (300) includes a second windward plate (310) and second connecting plates (320) disposed on both sides of the second windward plate (310). The plane on which the first sidewalls of the two second connecting plates (320) are located is the second windward surface (330). When the air inlet of the external circulation duct (120) is opposite to the second windward surface (330), the external circulation duct (120) is opened. The plane on which the second sidewalls of the two second connecting plates (320) are located is the second air outlet surface (340). The area of ​​the second windward surface (330) is larger than the area of ​​the second air outlet surface (340). The dual-layer flow air conditioning inlet box also includes: The inner damper shaft (600) is rotatably connected to the housing (100), and the two first connecting plates (220) are connected to the inner damper shaft (600). The inner circulation damper (200) rotates synchronously with the inner damper shaft (600). An external damper shaft (700) is rotatably connected to the housing (100), and two second connecting plates (320) are connected to the external damper shaft (700). The external circulation damper (300) rotates synchronously with the external damper shaft (700). The inner damper shaft (600) and the outer damper shaft (700) are arranged in parallel and have the same height; The first sidewall of the first connecting plate (220) is arc-shaped and bends away from the external damper pivot (700); The first sidewall of the second connecting plate (320) is arc-shaped and bends away from the inner damper pivot (600).

2. The dual-layer flow air conditioning inlet box according to claim 1, characterized in that, The outer edge of the internal circulation damper (200) is provided with a first sealing element (400), which is fitted against the inner wall of the internal circulation duct (110); and / or, The outer edge of the external circulation damper (300) is provided with a second sealing element (500), which is attached to the inner wall of the external circulation duct (120).

3. The dual-layer flow air conditioning inlet box according to claim 1, characterized in that, The dual-layer flow air conditioning inlet box also includes: The actuator (800) is driven and connected to both the inner damper shaft (600) and the outer damper shaft (700). The actuator (800) controls the opening of the inner circulation duct (110) by controlling the rotation of the inner damper shaft (600), and the actuator (800) controls the opening of the outer circulation duct (120) by controlling the rotation of the outer damper shaft (700).

4. The dual-layer flow air conditioning inlet box according to any one of claims 1-3, characterized in that, There are two internal circulation ducts (110), and the two internal circulation ducts (110) are symmetrically arranged on both sides of the external circulation duct (120).

5. The dual-layer flow air conditioning inlet box according to any one of claims 1-3, characterized in that, The dual-layer air conditioning air inlet box also includes a partition (900), which is disposed inside the housing (100). The partition (900) divides the space inside the housing (100) into the independent inner circulation air duct (110) and the outer circulation air duct (120).

6. The dual-layer flow air conditioning inlet box according to any one of claims 1-3, characterized in that, The housing (100) includes a first portion (130) and a second portion (140), which are fastened together to form the housing (100).

7. An air conditioner, characterized in that, It includes a blower and a dual-layer air conditioning inlet box as described in any one of claims 1-6, wherein the dual-layer air conditioning inlet box is disposed above the blower and is connected to the blower.

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