Air duct structure

Abstract

The invention provides an air duct structure which comprises an air inlet structure, an air outlet structure and an air outlet structure. A diffusion channel is formed in the diffusion structure, and the diffusion channel is used for being communicated with the internal environment of the compartment; the air suction structure is located between the air inlet structure and the diffusion structure, an air passing channel is formed in the air suction structure, and the air inlet channel, the air passing channel and the diffusion channel are sequentially communicated; and under the condition that cold air of the air inlet channel is conveyed to the diffusion structure through the air suction structure, air in the internal environment of the compartment is passively sucked into the air passing channel. According to the air duct structure provided by the embodiment of the invention, on the basis of the arrangement, gas circulation in the internal environment of the carriage can be enhanced, the mixing efficiency of cold air and gas in the internal environment of the carriage is improved, and the refrigeration effect is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cold chain transportation equipment, and in particular to an air duct structure. Background Art

[0002] At present, the cold air delivery structures commonly used in cold chain transportation equipment are divided into two types: upper air supply and lower air supply. The lower air supply duct uses the floor T-slot as a diffusion channel. This structure is only applicable to cold chain transportation equipment with T-slots. This technology is not mature and has limitations. The upper air supply duct is fixed on the inner top plate. This type of duct has problems such as a single delivery direction, poor cold air diffusion effect, and poor gas circulation in the box. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, the present disclosure provides an air duct structure.

[0005] In view of this, according to an embodiment of the present disclosure, an air duct structure is proposed, including:

[0006] An air intake structure is formed with an air intake passage, and the air intake passage is used to communicate with a cold air discharge port of the vehicle compartment;

[0007] A diffusion structure is formed with a diffusion channel, and the diffusion channel is used to communicate with the internal environment of the vehicle compartment;

[0008] An air intake structure, the air intake structure is located between the air intake structure and the diffusion structure, the air intake structure is formed with an air passage, and the air intake passage, the air passage and the diffusion passage are connected in sequence;

[0009] In this case, when the cold air in the air intake passage is transported to the diffusion structure via the air intake structure, the gas in the internal environment of the vehicle compartment is passively sucked into the air passage.

[0010] In a feasible implementation, the air intake structure includes:

[0011] Multiple air intake sections are arranged in sequence along the conducting direction of the air passage, each air intake section has an expansion opening and a contraction opening, the expansion opening is located at one end of the air intake section close to the air intake structure, and the contraction opening is located at one end of the air intake section close to the diffusion structure.

[0012] Among them, between two adjacent air suction sections, the expanded opening of one is sleeved on the contracted opening of the other, and an air suction channel is formed between the expanded opening and the contracted opening, and the air suction channel is connected to the air passage.

[0013] In a feasible implementation manner, the air intake structure further includes:

[0014] The first splitter plate is arranged in the air intake section and located in the air passage. The first splitter plate is arranged along the conducting direction of the air passage.

[0015] In a feasible embodiment, at least two first diverter plates are provided in each air intake section, and bell mouths are formed between two adjacent first diverter plates and between the first diverter plate and the inner wall of the air intake section. Along the conducting direction of the air passage, the bell mouths face the air intake passage.

[0016] In a feasible implementation manner, the cross-sectional area of ​​the air inlet of the air inlet passage is greater than the cross-sectional area of ​​the air outlet of the air inlet passage.

[0017] In a feasible implementation manner, there is an angle between the conducting direction of the air inlet passage and the conducting direction of the air passage.

[0018] In a feasible implementation, it also includes:

[0019] The transmission structure is arranged between the air intake structure and the diffusion structure, and a transmission channel is formed between the transmission structures, one end of the transmission channel is connected to the air passage, and the other end of the transmission channel is connected to the diffusion channel;

[0020] The cross-sectional area of ​​the connection between the transmission channel and the gas passage is smaller than the cross-sectional area of ​​the connection between the transmission channel and the diffusion channel.

[0021] In a feasible implementation, there is an angle between the conduction direction of the diffusion channel and the conduction direction of the transmission channel, and the diffusion channel is formed with a diffusion port, the diffusion port is arranged toward the bottom plate of the compartment, and the diffusion port is connected to the internal environment of the compartment;

[0022] The cross-sectional area of ​​the diffusion port is larger than the cross-sectional area of ​​the transmission channel.

[0023] In a feasible implementation, it also includes:

[0024] a second diverter plate, arranged along the conducting direction of the transmission channel and disposed in the transmission channel; and / or

[0025] The third diverter plate is arranged along the conducting direction of the diffusion channel and is disposed in the diffusion channel.

[0026] In a feasible implementation, it also includes:

[0027] The cover plate, the air intake structure, the diffusion structure and the air suction structure are all arranged on the cover plate, and the cover plate is used to be connected to the inner top wall of the carriage.

[0028] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the air duct structure provided by the embodiment of the present disclosure includes an air intake structure, a diffusion structure and an air suction structure, wherein the air intake structure forms an air intake channel, the air suction structure forms an air passage, and the diffusion structure forms a diffusion channel, the air intake channel, the air passage and the diffusion channel are connected in sequence, the air intake channel is connected to the cold air discharge port of the compartment, and the diffusion channel is connected to the internal environment of the compartment; in actual application, the cold air discharged into the compartment of the refrigerated truck enters the air duct structure through the air intake channel for transmission, after the cold air enters the air intake channel, it passes through the air passage of the air suction structure, enters the diffusion channel, and then diffuses to the internal space of the compartment through the diffusion channel; when the cold air passes through the air passage, the gas in the internal environment of the compartment will be sucked into the air passage, mixed with the cold air, and then discharged back to the internal environment of the compartment through the diffusion channel, thereby improving the gas circulation in the internal environment of the compartment and accelerating the mixing rate of the gas in the internal environment of the compartment and the cold air, which is beneficial to improving the refrigeration efficiency and quickly cooling the interior of the compartment.

[0029] The air duct structure of the present disclosure, other advantages, objectives and features of the present disclosure will be reflected in part through the following description, and in part will also be understood by those skilled in the art through research and practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic exploded view of an air duct structure according to an embodiment of the present disclosure;

[0032] Figure 2 A schematic structural diagram of an air intake structure of an air duct structure provided in an embodiment of the present disclosure;

[0033] Figure 3 A schematic structural diagram of an air intake structure of an air duct structure provided in an embodiment of the present disclosure;

[0034] Figure 4 A schematic structural diagram of a transmission structure of an air duct structure according to an embodiment of the present disclosure;

[0035] Figure 5 A schematic structural diagram of a diffusion structure of an air duct structure of an embodiment provided in the present disclosure.

[0036] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0037] Intake structure 100, diffusion structure 200, air intake structure 300, transmission structure 400;

[0038] Guide plate 110, third diverter plate 210, air intake section 310, first diverter plate 320;

[0039] A second diverter plate 410, a connecting plate 420, and a cover plate 500;

[0040] Intake channel 1001, diffusion channel 2001;

[0041] Air passage 3001, air intake passage 3002;

[0042] Transmission channel 4001. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] like Figures 1 to 5 As shown, according to an embodiment of the present disclosure, an air duct structure is proposed, including: an air intake structure 100, formed with an air intake channel 1001, the air intake channel 1001 is used to connect to the cold air discharge port of the vehicle compartment; a diffusion structure 200, formed with a diffusion channel 2001, the diffusion channel 2001 is used to connect to the internal environment of the vehicle compartment; an air intake structure 300, the air intake structure 300 is located between the air intake structure 100 and the diffusion structure 200, the air intake structure 300 is formed with an air passage 3001, the air intake channel 1001, the air passage 3001 and the diffusion channel 2001 are connected in sequence; wherein, when the cold air in the air intake channel 1001 is transported to the diffusion structure 200 via the air intake structure 300, the gas in the internal environment of the vehicle compartment is passively sucked into the air passage 3001.

[0045] The air duct structure proposed in the embodiment of the present disclosure includes an air intake structure 100, a diffusion structure 200 and an air intake structure 300, wherein the air intake structure 100 is formed with an air intake channel 1001, the air intake structure 300 is formed with an air passage 3001, and the diffusion structure 200 is formed with a diffusion channel 2001. The air intake channel 1001, the air passage 3001 and the diffusion channel 2001 are connected in sequence, the air intake channel 1001 is connected with the cold air discharge port of the compartment, and the diffusion channel 2001 is connected with the internal environment of the compartment; in actual application, the cold air discharged into the compartment enters the air duct structure through the air intake channel 1001 and enters After the cold air enters the air inlet channel 1001, it passes through the air passage 3001 located in the air intake structure 300, enters the diffusion channel 2001, and then diffuses to the interior space of the compartment through the diffusion channel 2001; when the cold air passes through the air passage 3001, the gas in the internal environment of the compartment will be sucked into the air passage 3001, mixed with the cold air, and then discharged back to the internal environment of the compartment through the diffusion channel 2001, which can improve the gas circulation in the internal environment of the compartment and accelerate the mixing rate of the gas in the internal environment of the compartment and the cold air, which is beneficial to improving the refrigeration efficiency and quickly cooling the interior of the compartment.

[0046] It can be understood that when the cold air in the air intake channel 1001 is transported to the diffusion structure 200 through the air intake structure 300, since the cold air in the air channel 3001 has a certain flow rate, the gas pressure in the air channel 3001 can be made lower than the gas pressure of the internal environment of the vehicle compartment, thereby causing a pressure difference between the air channel 3001 and the internal environment of the vehicle compartment to form a negative pressure. The gas in the internal environment of the vehicle compartment will be sucked into the air channel 3001 under the action of the negative pressure, and mixed and flow with the cold air.

[0047] Exemplarily, the air duct structure is disposed on the top of the car, which, on the one hand, prevents the materials in the car from blocking the discharge port of the cold air, and on the other hand, facilitates the diffusion of the cold air.

[0048] It should be noted that the duct structure used for cold air delivery in cold chain transportation equipment in traditional technology is divided into two types: upper air delivery and lower air delivery. The lower air delivery duct structure uses the floor T-slot as the diffusion channel 2001. This structure is only applicable to cold chain transportation equipment with T-slots. This technology is not mature and has limitations, and the transportation conditions of materials in the box can easily affect the discharge effect of cold air; while the upper air delivery duct structure often adopts a duct structure set on the top of the car. This type of duct structure has a single delivery direction and has problems such as uneven gas diffusion and poor gas circulation in the car. Compared with traditional technology, the duct structure proposed in the embodiment of the present disclosure can enhance the gas circulation in the internal environment of the car based on the above-mentioned setting, improve the mixing efficiency of cold air and gas in the internal environment of the car, and is conducive to improving the refrigeration effect.

[0049] In some examples, such as Figure 1 and Figure 2 As shown, the air intake structure 300 includes: a plurality of air intake segments 310, which are arranged in sequence along the conducting direction of the air passage 3001, and each air intake segment 310 has a flared opening and a constricted opening, the flared opening is located at one end of the air intake segment 310 close to the air intake structure 100, and the constricted opening is located at one end of the air intake segment 310 close to the diffusion structure 200; wherein, between two adjacent air intake segments 310, the flared opening of one is sleeved on the constricted opening of the other, and an air intake channel 3002 is formed between the flared opening and the constricted opening, and the air intake channel 3002 is connected to the air passage 3001.

[0050] In the above technical solution, the air intake structure 300 includes a plurality of air intake sections 310, each of which has a flared opening and a constricted opening. Along the conducting direction of the air passage 3001, the plurality of air intake sections 310 are connected in sequence by connecting the flared openings with the constricted openings, that is, the flared opening is located at one end of the air intake section 310 close to the air intake structure 100, and the constricted opening is located at one end of the air intake section 310 close to the diffusion structure 200. Since the flared opening is sleeved on the constricted opening between two adjacent air intake sections 310, an air intake channel 3002 is formed between the flared opening and the constricted opening, and the air intake channel 3002 is connected to the air passage 3001. When cold air flows in the air passage 3001, the gas in the internal environment of the car will enter the air passage 3001 from the air intake channel 3002 under the action of negative pressure, thereby realizing gas circulation in the car.

[0051] It can be understood that the air passage 3001 runs through multiple air intake sections 310, the expansion opening of the air intake section 310 is directed toward the air inlet channel 1001, and the contraction opening is directed toward the diffusion channel 2001, and there is a relatively smooth inclination angle between the air intake channel 3002 formed between the expansion opening and the contraction opening and the conduction direction of the air passage 3001, and in the process of the gas in the interior environment of the vehicle entering the air passage 3001, the flow direction of the gas in the interior environment of the vehicle entering the air passage 3001 in the air intake channel 3002 conforms to the flow direction of the cold air in the air passage 3001, thereby making it easier for the gas in the interior environment of the vehicle to enter the air passage 3001, and at the same time preventing the cold air from reflux and escaping.

[0052] It can be understood that along the conducting direction of the gas channel 3001, the flared opening itself is a structure with a gradually decreasing diameter.

[0053] It can be understood that, in the process of the cold air flowing in the air passage 3001, it enters from the expanded opening of the air intake section 310 and then flows out from the contracted opening of the air intake section 310. The cross-sectional area of ​​the flow path of the cold air will gradually decrease, so that the flow rate of the cold air in the air passage 3001 will increase. At the same time, the pressure in the air passage 3001 will be further reduced, and then the pressure difference between the air passage 3001 and the internal environment of the vehicle will be further increased, which is more conducive to the gas in the internal environment of the vehicle to be sucked into the air passage 3001 through the air intake channel 3002.

[0054] It is understandable that each air intake section 310 itself may also have a gradually decreasing diameter structure, so that the cross-sectional area of ​​the air passage 3001 is reduced along the flow direction of the cold air in the air passage 3001, so as to increase the flow rate of the cold air in the air passage 3001 and increase the suction force of the air passage 3001 on the gas in the internal environment of the vehicle.

[0055] In some examples, such as Figure 1 and Figure 2 As shown, the air intake structure 300 further includes: a first diverter plate 320 , which is disposed in the air intake section 310 and located in the air passage 3001 , and the first diverter plate 320 is arranged along the conducting direction of the air passage 3001 .

[0056] In the above technical solution, the air intake structure 300 also includes a first diverter plate 320, which is located in the air passage 3001 and is arranged in the air intake section 310 along the conduction direction of the air passage 3001. The first diverter plate 320 can divide the air passage 3001 into a plurality of small air passages with the same conduction direction. The first diverter plate 320 can play a guiding role, combing the gas in the air passage 3001 so that the gas passes through the air passage 3001 more evenly, thereby improving the flow efficiency of the airflow, reducing the gas flow velocity difference and vortex, and reducing the resistance to gas flow, thereby reducing energy consumption.

[0057] It can be understood that the above-mentioned gas includes cold air and gas from the interior environment of the vehicle cabin that enters the air passage 3001.

[0058] In some examples, such as Figure 1 and Figure 2 As shown, each air intake section 310 is provided with at least two first diverter plates 320 , and bell mouths are formed between two adjacent first diverter plates 320 and between the first diverter plates 320 and the inner wall of the air intake section 310 , and along the conducting direction of the air passage 3001 , the bell mouths face the air intake passage 1001 .

[0059] In the above technical solution, each intake section 310 is provided with at least two first diverter plates 320, and a bell mouth is formed between two adjacent first diverter plates 320, and a bell mouth is also formed between the first diverter plate 320 and the inner wall of the intake section 310. It can be understood that due to the expansion structure of the intake section 310, the bell mouth is oriented toward the air inlet channel 1001, thereby realizing the convergence and diversion of the gas, and further improving the flow rate of the gas.

[0060] It is understandable that the bell mouth here has the same technical effect as the expansion of the air intake section 310, which will not be elaborated here.

[0061] It is understandable that the positions of the first diverter plates 320 located in adjacent air intake sections 310 should correspond to each other, that is, along the conducting direction of the air passage 3001, the small air passages divided by the first diverter plates 320 located in adjacent air intake sections 310 should correspond to each other.

[0062] In some examples, such as Figure 1 and Figure 3 As shown, the cross-sectional area of ​​the air inlet of the air inlet channel 1001 is greater than the cross-sectional area of ​​the air outlet of the air inlet channel 1001 .

[0063] In the above technical solution, the cross-sectional area of ​​the air inlet of the air inlet channel 1001 is larger than the cross-sectional area of ​​the air outlet of the air inlet channel 1001. Therefore, in the process of the cold air entering the air inlet and flowing out of the air outlet, it is affected by the change in the diameter of the air inlet channel 1001, so that the flow rate of the cold air will increase, which is beneficial to improving the cold air delivery efficiency. At the same time, the larger cross-sectional area of ​​the air inlet of the air inlet channel 1001 is also beneficial for the cold air to enter the air inlet channel 1001 from the cold air discharge port of the car.

[0064] In some examples, such as Figure 1 and Figure 3 As shown, there is an angle between the conducting direction of the air inlet channel 1001 and the conducting direction of the air passage 3001 .

[0065] In the above technical solution, the air intake channel 1001 is inclined relative to the air passage 3001, so that there is a certain angle between the air intake channel 1001 and the air passage 3001. Since the air intake channel 1001 is directly connected to the cold air discharge port of the vehicle, such a setting can reduce the turbulent dissipation caused by the sudden change of the cross-sectional area while keeping the cross-sectional area of ​​the air intake port of the air intake channel 1001 unchanged.

[0066] It is understandable that a guide plate 110 may be provided in the air inlet channel 1001 along the conducting direction of the air inlet channel 1001, which is beneficial for evenly dividing and converging the cold air and reducing turbulence.

[0067] For example, Figure 1 and Figure 3 As shown, three guide plates 110 may be provided, and the three guide plates 110 are arranged in a staggered manner, wherein the guide plates 110 on both sides are placed at a certain angle, which can evenly divide and compress the refrigerant gas. The middle guide plate extends to the outlet of the air inlet channel 1001, which can effectively reduce turbulence and avoid kinetic energy loss of the refrigerant air.

[0068] In some examples, such as Figure 1 and Figure 4 As shown, it also includes: a transmission structure 400, which is arranged between the air intake structure 300 and the diffusion structure 200, and a transmission channel 4001 is formed between the transmission structures 400, one end of the transmission channel 4001 is connected to the air passage 3001, and the other end of the transmission channel 4001 is connected to the diffusion channel 2001; wherein, the cross-sectional area of ​​the connection between the transmission channel 4001 and the air passage 3001 is smaller than the cross-sectional area of ​​the connection between the transmission channel 4001 and the diffusion channel 2001.

[0069] In the above technical solution, the air duct structure also includes a transmission structure 400, which is arranged between the air intake combination and the diffusion structure 200, and the transmission structure 400 forms a transmission channel 4001, and the two ends of the transmission channel 4001 are respectively connected to the air passage 3001 and the diffusion channel 2001, so that the cold air can be transmitted from the air passage 3001 to the diffusion channel 2001 through the transmission channel 4001, which is conducive to the long-distance transmission of cold air; at the same time, the cross-sectional area of ​​the connection between the transmission channel 4001 and the air passage 3001 is smaller than the cross-sectional area of ​​the connection between the transmission channel 4001 and the diffusion channel 2001, that is, the cross-sectional area of ​​the flow path of the cold air is increased at the transmission channel 4001, which can effectively slow down the flow speed of the cold air, and at the same time increase the unit volume of the cold air in the channel, which is conducive to the diffusion of the after-effect cold air.

[0070] In some examples, such as Figure 1 and Figure 5 As shown, there is an angle between the conducting direction of the diffusion channel 2001 and the conducting direction of the transmission channel 4001, and the diffusion channel 2001 is formed with a diffusion port, which is arranged toward the bottom plate of the compartment and is connected to the internal environment of the compartment;

[0071] Among them, the cross-sectional area of ​​the diffusion port is larger than the cross-sectional area of ​​the transmission channel 4001.

[0072] In the above technical solution, the diffusion channel 2001 is formed with a diffusion port, which is connected to the internal environment of the car. There is an angle between the conduction direction of the diffusion channel 2001 and the conduction direction of the diffusion channel 2001, so that the diffusion port can be directed towards the floor of the car, and then the cold air can be directly blown through the diffusion port to the materials located on the floor of the car, which is beneficial for the diffusion of the cold air channel diffusion port to the internal environment of the car, which is beneficial for improving the cooling efficiency and avoiding unnecessary kinetic energy loss caused by the upward diffusion of cold air.

[0073] In the above technical solution, the cross-sectional area of ​​the diffusion port is larger than the cross-sectional area of ​​the transmission channel 4001, so that the cold air diffusion port can further diffuse, which is more conducive to improving the diffusion efficiency of the cold air and the refrigeration efficiency.

[0074] In some examples, such as Figure 1 , Figure 4 and Figure 5 As shown, it also includes:

[0075] The second splitter plate 410 is arranged along the conducting direction of the transmission channel 4001 and is disposed in the transmission channel 4001; and / or

[0076] The third diverter plate 210 is arranged along the conducting direction of the diffusion channel 2001 and is disposed in the diffusion channel 2001 .

[0077] In the above technical solution, the air duct structure also includes a second diverter plate 410, and the second diverter plate 410 is provided with a transmission channel 4001, and the second diverter plate 410 is arranged along the conduction direction of the transmission channel 4001, so that the second diverter plate 410 can guide and comb the cold air transmitted in the transmission channel 4001, thereby improving the flow efficiency of the airflow, which is beneficial to reducing the gas flow velocity difference and eddy current, and is beneficial to reducing the resistance of the gas flow, thereby reducing energy consumption.

[0078] Exemplarily, a plurality of second manifold plates 410 may be arranged in parallel in the transmission channel 4001 , and the second manifold plates 410 are connected by connecting plates 420 , which is also beneficial to improving the structural strength of the transmission channel 4001 .

[0079] In the above technical solution, the air duct structure also includes a third diverter plate 210, and the third diverter plate 210 is provided with a diffusion channel 2001, and the third diverter plate 210 is arranged along the conduction direction of the diffusion channel 2001, so that the third diverter plate 210 can guide and comb the cold air transmitted in the diffusion channel 2001, improve the flow efficiency of the airflow, and help reduce the resistance of the gas flow, thereby reducing energy consumption.

[0080] It can be understood that the third diverter plate 210 can form a bell-mouth structure near the end close to the diffusion port, which is more conducive to the diffusion of cold air.

[0081] In the above technical solution, the second diverter plate 410 and the third diverter plate 210 may be provided at the same time, and the specific effects will not be elaborated here.

[0082] It can be understood that the first splitter plate 320, the second splitter plate 410, the third splitter plate 210 and the guide plate 110 can increase the overall strength of the air duct structure and avoid deformation of the air duct structure.

[0083] In some examples, such as Figure 1 As shown, it also includes: a cover plate 500, the air intake structure 100, the diffusion structure 200 and the air suction structure 300 are all arranged on the cover plate 500, and the cover plate 500 is used to be connected to the inner top wall of the vehicle compartment.

[0084] In the above technical solution, the air duct structure also includes a cover plate 500, and the air intake structure 100, the diffusion structure 200 and the air suction structure 300 are all arranged on the cover plate 500 and connected to the inner top wall of the vehicle compartment through the cover plate 500. The cover plate 500 can improve the integrity of the air duct structure and increase the structural strength.

[0085] It is understandable that the transmission structure 400 can also be arranged on the cover plate 500, and the air intake structure 100, the air suction structure 300, the transmission structure 400 and the diffusion structure 200 are connected in a detachable manner, so that the air duct structure is a split structure, which is more convenient for installation, can be appropriately adjusted according to the length in the box, and has strong adaptability. The split air duct structure can be connected into an integrated air duct structure through the cover plate 500, which can not only ensure sufficient structural strength, but also improve the overall adaptability.

[0086] For example, the cover plate 500 and the top of the vehicle compartment may be connected by riveting, and glue may be applied between the cover plate 500 and the top of the vehicle compartment to ensure that the air duct is securely installed.

[0087] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0088] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0089] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0090] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An air duct structure, characterized in that: include: An air intake structure is formed with an air intake passage, wherein the air intake passage is used to communicate with a cold air discharge port of the vehicle compartment; A diffusion structure, formed with a diffusion channel, the diffusion channel is used to communicate with the internal environment of the compartment; An air intake structure, the air intake structure is located between the air intake structure and the diffusion structure, the air intake structure is formed with an air passage, the air intake passage, the air passage and the diffusion passage are connected in sequence; Wherein, when the cold air in the air intake passage is transported to the diffusion structure via the air intake structure, the gas in the internal environment of the vehicle compartment is passively inhaled into the air passage.

2. The air duct structure according to claim 1, characterized in that: The air intake structure comprises: A plurality of air intake sections, which are arranged in sequence along the conducting direction of the air passage, each of which has an expansion opening and a contraction opening, wherein the expansion opening is located at one end of the air intake section close to the air intake structure, and the contraction opening is located at one end of the air intake section close to the diffusion structure; Among them, between two adjacent air suction sections, the expansion opening of one is sleeved on the contraction opening of the other, and an air suction channel is formed between the expansion opening and the contraction opening, and the air suction channel is connected to the air passage.

3. The air duct structure according to claim 2, characterized in that: The air intake structure further comprises: The first diverter plate is arranged in the air intake section and located in the air passage. The first diverter plate is arranged along the conducting direction of the air passage.

4. The air duct structure according to claim 3, characterized in that: Each of the air intake sections is provided with at least two of the first diverter plates, and a bell mouth is formed between two adjacent first diverter plates and between the first diverter plate and the inner wall of the air intake section. Along the conducting direction of the air passage, the bell mouth faces the air intake passage.

5. The air duct structure according to claim 1, characterized in that: The cross-sectional area of ​​the air inlet of the air inlet passage is greater than the cross-sectional area of ​​the air outlet of the air inlet passage.

6. The air duct structure according to claim 5, characterized in that: There is an angle between the conducting direction of the air inlet passage and the conducting direction of the air passage.

7. The air duct structure according to claim 1, characterized in that: Also includes: A transmission structure is disposed between the air intake structure and the diffusion structure, wherein a transmission channel is formed between the transmission structures, one end of the transmission channel is connected to the air passage, and the other end of the transmission channel is connected to the diffusion channel; Wherein, the cross-sectional area of ​​the connection between the transmission channel and the gas passage is smaller than the cross-sectional area of ​​the connection between the transmission channel and the diffusion channel.

8. The air duct structure according to claim 7, characterized in that: There is an angle between the conducting direction of the diffusion channel and the conducting direction of the transmission channel, the diffusion channel is formed with a diffusion port, the diffusion port is arranged toward the bottom plate of the compartment, and the diffusion port is connected to the internal environment of the compartment; Wherein, the cross-sectional area of ​​the diffusion port is larger than the cross-sectional area of ​​the transmission channel.

9. The air duct structure according to claim 8, characterized in that: Also includes: A second diverter plate is arranged along the conducting direction of the transmission channel and is disposed in the transmission channel; and / or The third diverter plate is arranged along the conducting direction of the diffusion channel and is disposed in the diffusion channel.

10. The air duct structure according to any one of claims 1 to 9, characterized in that: Also includes: A cover plate, the air intake structure, the diffusion structure and the air suction structure are all arranged on the cover plate, and the cover plate is used to be connected to the inner top wall of the compartment.

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