Air supply device and air conditioning unit

Abstract

This application provides an air supply device and an air conditioning unit. The air supply device includes a main air duct and multiple horizontal air ducts connected to the main air duct. Each horizontal air duct has an air outlet at its end, and the main air duct has an air inlet in its vertical direction. An axial flow fan is installed on the air inlet to introduce airflow into the air inlet. A guide plate is installed on the inner wall of the main air duct opposite to the air inlet, and the guide plate is used to evenly distribute the airflow introduced by the air inlet into each horizontal air duct. Applying the technical solution of this invention, the axial flow fan introduces airflow into the air inlet, and the airflow enters the main air duct and blows towards the guide plate. The guide plate evenly distributes the airflow introduced by the air inlet into each horizontal air duct, thereby achieving uniform air supply to each horizontal air duct. Then, the airflow can be supplied from the air outlet at the end of each horizontal air duct, achieving uniform air supply to each air outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to an air supply device and an air conditioning unit. Background Art

[0002] Existing rail vehicle air conditioners usually use a rail vehicle air conditioner duct structure disclosed in patent number CN204095824U for the air supply system. This structure can achieve a certain degree of uniform air supply. However, a soft air duct and a complex main air duct need to be set after the air supply port of the air conditioner, which is costly, has a long process, high resistance, and high air supply pressure head.

[0003] In addition, since the air outlet of the air conditioner main unit is connected to the main air duct of the vehicle, the main air duct is connected to the branch air duct, and the branch air duct supplies air to the passenger compartment through slits or holes, the air supply system has disadvantages such as uneven air supply, complex air ducts, and large process resistance to varying degrees. Summary of the invention

[0004] The embodiments of the present invention provide an air supply device and an air conditioning unit to solve the technical problem of uneven air supply in the air supply structure in the prior art.

[0005] An embodiment of the present application provides an air supply device, including: a main air duct and multiple horizontal air ducts connected to the main air duct, an air outlet is formed at the end of each horizontal air duct, and an air inlet is formed in the vertical direction of the main air duct; an axial flow fan is arranged on the air inlet, and is used to introduce air flow into the air inlet; a guide plate is arranged on the inner wall of the main air duct opposite to the air inlet, and the guide plate is used to evenly disperse the air flow introduced by the air inlet into each horizontal air duct.

[0006] In one embodiment, a conical air guide body protruding toward the air inlet is formed on the guide plate.

[0007] In one embodiment, a plurality of air outlets are formed on the horizontal air duct.

[0008] In one embodiment, a first guide plate assembly is disposed in the horizontal air duct, and the first guide plate assembly is used to distribute the airflow entering the horizontal air duct to each air outlet.

[0009] In one embodiment, a second guide plate assembly is further provided in the horizontal air duct, the second guide plate assembly is spaced apart from the first guide plate assembly, and the second guide plate assembly is used to cooperate with the first guide plate assembly to achieve uniform air outlets at each air outlet.

[0010] In one embodiment, the plurality of horizontal air ducts include a left air duct and a right air duct, and the left air duct and the right air duct are respectively connected to the left and right sides of the main air duct.

[0011] In one embodiment, the left air duct and the right air duct are respectively perpendicular to the main air duct.

[0012] In one embodiment, two air outlets are formed at the upper and lower ends of the left air duct, and two air outlets are formed at the upper and lower ends of the right air duct.

[0013] In one embodiment, the first guide plate assembly includes a curved first guide plate and a curved second guide plate, the first guide plate and the second guide plate are connected in a "human" shape and are respectively arranged in the left air duct and the right air duct facing the main air duct, and the first guide plate and the second guide plate are used to distribute the airflow to the air outlets located at the upper and lower ends of the left air duct / right air duct.

[0014] In one embodiment, the first guide plate assembly further includes an air regulating guide plate, which is rotatably disposed at an adjacent position connected to the first guide plate and the second guide plate, and is used to regulate the air volume passing through the first guide plate and the second guide plate.

[0015] In one embodiment, the second guide plate assembly includes a curved third guide plate and a curved fourth guide plate, the third guide plate and the fourth guide plate are arranged in an "child" shape and are respectively spaced apart from the first guide plate and the second guide plate, the third guide plate and the first guide plate cooperate to evenly distribute the airflow to the air outlet located at the upper end of the left air duct / right air duct, and the fourth guide plate and the second guide plate cooperate to evenly distribute the airflow to the air outlet located at the lower end of the left air duct / right air duct.

[0016] In one embodiment, sponges are provided on the inner wall of the main air duct and / or the inner wall of the horizontal air duct.

[0017] In one embodiment, the air supply device further includes a chassis, and the main air duct and the horizontal air duct are installed on the chassis.

[0018] In one embodiment, a guide ring is provided on the air inlet, and the axial flow fan is installed on the guide ring.

[0019] The present application also provides an air conditioning unit, comprising an air supply device, which is the above-mentioned air supply device.

[0020] In the above embodiment, the airflow is introduced into the air inlet through the axial flow fan, and the airflow enters the main air duct and blows towards the guide plate. The guide plate evenly disperses the airflow introduced from the air inlet into each horizontal air duct, thereby achieving uniform air supply to each horizontal air duct. After that, the airflow can be supplied from the air outlet at the end of each horizontal air duct, thereby achieving uniform air supply to each air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a schematic longitudinal sectional view of an embodiment of an air supply device according to the present invention;

[0023] Figure 2 is a schematic cross-sectional view of an embodiment of an air supply device according to the present invention;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure of the guide plate of the air supply device;

[0025] Figure 4 yes Figure 2 A schematic structural diagram of a first guide plate assembly and a second guide plate assembly of a guide plate of an air supply device. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0027] In order to solve the technical problem of uneven air supply in the air supply structure in the prior art, the present invention provides an air supply device, such as Figure 1 and Figure 2 The embodiment of the air supply device shown includes a main air duct 10 and a plurality of horizontal air ducts connected to the main air duct 10, an air outlet 21 is formed at the end of each horizontal air duct, and an air inlet 11 is formed in the vertical direction of the main air duct 10. An axial flow fan 30 is arranged on the air inlet 11, and is used to introduce airflow into the air inlet 11. A guide plate 40 is arranged on the inner wall of the main air duct 10 opposite to the air inlet 11, and the guide plate 40 is used to evenly disperse the airflow introduced by the air inlet 11 into each horizontal air duct.

[0028] By applying the technical solution of the present invention, an air flow is introduced into the air inlet 11 through the axial flow fan 30, and the air flow enters the main air duct 10 and blows toward the guide plate 40. The guide plate 40 evenly disperses the air flow introduced from the air inlet 11 into each horizontal air duct, thereby achieving uniform air supply to each horizontal air duct. After that, the air flow can be supplied from the air outlet 21 at the end of each horizontal air duct, thereby achieving uniform air supply to each air outlet 21.

[0029] Optional, such as Figure 1 As shown, a guide ring 111 is provided on the air inlet 11 , and the axial flow fan 30 is installed on the guide ring 111 .

[0030] like Figure 3As shown, as a preferred embodiment, a conical air guide body 41 protruding toward the air inlet 11 is formed on the guide plate 40. Assume that the air flow velocity blowing toward the conical air guide body 41 is Vi. Under the guiding action of the conical air guide body 41, Vi generates X-direction and Y-direction component velocities, namely Vix and Viy. Vix is ​​perpendicular to the wall of the air duct to form a static pressure. The guide plate is used to allow the air supply of the axial flow fan to achieve the first diversion, so that part of the dynamic pressure is converted into static pressure, while the generation of vortices is suppressed, the flow resistance loss is reduced, the generation of vortices is suppressed, the noise is reduced, the pressure loss is reduced, and energy is saved. The airflow evenly distributes the flow along each horizontal air duct. Under the action of the resistance along the way, the air flow velocity decreases and the static pressure gradually increases.

[0031] More preferably, the cross-sectional area of ​​the air inlet 11 can be made smaller than the cross-sectional area of ​​the main air duct 10 so that the air flow velocity decreases and the static pressure increases.

[0032] like Figure 2 As shown, in the technical solution of this embodiment, a plurality of air outlets 21 are arranged on the horizontal air duct to achieve multi-directional air outlet. Optionally, the air outlet 21 is a rectangular air outlet.

[0033] More preferably, a first guide plate assembly 50 is provided in the horizontal air duct, and the first guide plate assembly 50 is used to distribute the airflow entering the horizontal air duct to each air outlet 21, so as to achieve uniform air flow from each air outlet 21. More preferably, as Figure 2 and Figure 4 As shown, a second guide plate assembly 60 is also provided in the horizontal air duct, and the second guide plate assembly 60 is spaced apart from the first guide plate assembly 50, and the second guide plate assembly 60 is used to cooperate with the first guide plate assembly 50 to achieve uniform air discharge from each air outlet 21. The first guide plate assembly 50 and the second guide plate assembly 60 are used to cooperate with each other to perform a second flow diversion, strengthen laminar flow, suppress vortex, convert dynamic pressure into static pressure, achieve low-speed uniform air supply, reduce flow resistance loss, and reduce noise.

[0034] Specifically, Figure 2 As shown, in the technical solution of this embodiment, the multiple horizontal air ducts include a left air duct 20a and a right air duct 20b, and the left air duct 20a and the right air duct 20b are respectively connected to the left and right sides of the main air duct 10. Optionally, two air outlets 21 are formed at the upper and lower ends of the left air duct 20a, and two air outlets 21 are also formed at the upper and lower ends of the right air duct 20b. In this way, the use of a built-in air duct form with one air inlet 11 and four air outlets 21 is conducive to uniform air supply, reducing the temperature gradient in the passenger compartment, and improving comfort.

[0035] Preferably, a sponge 70 is provided on the inner wall of the main air duct 10 and / or the inner wall of the horizontal air duct, and the sponge plays the role of heat preservation, sealing, noise reduction and shock absorption.

[0036] Optionally, in the technical solution of this embodiment, the left air duct 20a and the right air duct 20b are respectively perpendicular to the main air duct 10. Thus, the air ducts are distributed symmetrically in an I-shaped center, so that the flow lengths are equal, which is conducive to uniform air supply. Optionally, the air duct cross-sections of the main air duct 10, the left air duct 20a and the right air duct 20b are rectangular, and the rectangular area is large, forming a static pressure box effect, and achieving uniform air supply.

[0037] Optionally, the air duct composed of the main air duct 10, the left air duct 20a and the right air duct 20b can adopt a cover plate type air duct structure, that is, the top plate of the air duct can be disassembled, which is conducive to the maintenance of the fan blades and the air duct. Optionally, the top plate of the main air duct 10, the top plate of the left air duct 20a and the top plate of the right air duct 20b are relatively independently arranged, so as to facilitate the independent maintenance of each blockage. Optionally, each top plate can be fixed to the I-shaped air duct plate by a bolt group. Optionally, the I-shaped air duct plate can be welded by a left partition, a left middle partition, two middle partitions, a right middle partition, and a right partition to form an air duct skeleton. The I-shaped air duct plate is welded on the chassis assembly, making it possible for the air conditioner unit to have a built-in air duct. Since the built-in air duct can realize low-speed uniform air supply, it can directly supply air to the static pressure box of the passenger compartment. There is no need for a complex main and branch air duct system behind the air outlet of the unit, which greatly reduces costs and process losses. There is no need for a high-pressure head fan to supply air, thus achieving energy saving.

[0038] like Figure 2 and Figure 4 As shown, the first guide plate assembly 50 includes a curved first guide plate 51 and a curved second guide plate 52. The first guide plate 51 and the second guide plate 52 are connected in a "human" shape and are respectively arranged in the left air duct 20a and the right air duct 20b facing the main air duct 10. The first guide plate 51 and the second guide plate 52 are used to distribute the airflow to the air outlets 21 located at the upper and lower ends of the left air duct 20a / right air duct 20b.

[0039] like Figure 4As shown, more preferably, in the technical solution of this embodiment, the first guide plate assembly 50 also includes an air-adjusting guide plate 53, which is rotatably arranged at an adjacent position connected to the first guide plate 51 and the second guide plate 52, and the air-adjusting guide plate 53 is used to adjust the air volume passing through the first guide plate 51 and the second guide plate 52 to improve the uniformity of air supply. When in use, the air volume passing through the first guide plate 51 and the second guide plate 52 can be adjusted by the air-adjusting guide plate 53, and when the air volume is uniform, the air-adjusting guide plate 53 can be fixed. Optionally, the air-adjusting guide plate 53 can be connected by two bolts, and can be fan-shaped moved around one bolt as the axis along the other bolt to fine-tune the air volume of each air outlet 21, and when the air supply of each air outlet 21 is uniform, the two bolts are tightened. Specifically, when the flow channel distance of an air outlet 21 is long and the flow resistance is large, the air regulating guide plate 53 is allowed to adjust more air volume to the air outlet 21 .

[0040] like Figure 2 and Figure 4 As shown, in the technical solution of this embodiment, the second guide plate assembly 60 includes a third guide plate 61 and a fourth guide plate 62, which are arranged in a "child" shape and are spaced from the first guide plate 51 and the second guide plate 52, respectively. The third guide plate 61 and the first guide plate 51 cooperate to evenly distribute the airflow to the air outlet 21 at the upper end of the left air duct 20a / right air duct 20b, and the fourth guide plate 62 and the second guide plate 52 cooperate to evenly distribute the airflow to the air outlet 21 at the lower end of the left air duct 20a / right air duct 20b. In this way, when in use, through the cooperation of the third guide plate 61 and the first guide plate 51 and the cooperation of the fourth guide plate 62 and the second guide plate 52, the airflow can be diverted for the second time, the laminar flow can be strengthened, the vortex can be suppressed, the dynamic pressure can be converted into static pressure, low-speed uniform air supply can be achieved, the flow resistance loss can be reduced, and the noise can be reduced.

[0041] Optionally, the first guide plate 51, the second guide plate 52, the third guide plate 61 and the fourth guide plate 62 are all welded in the bottom plate of the air duct. The first guide plate 51, the second guide plate 52, the third guide plate 61 and the fourth guide plate 62 play the role of diversion, diversion, convergence and flow adjustment together. Because they are arc-shaped guide plates, the airflow can be guided to move in laminar flow, suppress the generation of vortexes, reduce noise, reduce pressure loss, and save energy. Since the first guide plate 51, the second guide plate 52, the third guide plate 61 and the fourth guide plate 62 are all arc-shaped guide plates, under the guiding effect of the arc-shaped guide plates, the airflow flows through the channels between the guide plates in a laminar state, suppresses the generation of vortexes, reduces flow resistance, and achieves energy saving. Through the effect of the above-mentioned guide plates, the airflow of each air outlet can be made to merge and flow out in a laminar state in two airflows.

[0042] In the technical solution of the present invention, since the left air duct 20a and the right air duct 20b are symmetrically distributed, the process losses are the same and the flow rates are equal. Although the process lengths of the upper and lower air outlets 21 of the left air duct 20a are different, the flow rates are adjusted to be equal under the diversion of the first guide plate assembly 50 and the second guide plate assembly 60. Similarly, the process lengths of the upper and lower air outlets of the right air duct 20b are also different. Under the diversion of the first guide plate assembly 50 and the second guide plate assembly 60, the flow rates are adjusted to be consistent. In this way, through the joint action of the above-mentioned structures, the air flow rates of the four air outlets 21 are finally equal, the wind speed is appropriate, and uniform air supply is achieved while ensuring comfort.

[0043] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, optionally, the air supply device also includes a chassis 80, and the main air duct 10 and the horizontal air duct are installed on the chassis 80, thereby realizing the integrated installation of the air duct.

[0044] It should be noted that if a porous partition is used to replace the guide plate 40, the air supply resistance and noise will be large.

[0045] The present invention also provides an air conditioning unit, which includes the above-mentioned air supply device. The above-mentioned air supply device can achieve uniform air supply cooling / heating of the air conditioning unit, thereby improving user experience.

[0046] It can be seen from the above content that the technical solution of the present invention solves the problems of uneven air supply, complex air ducts and high costs, large process resistance, high air supply pressure head, and low energy saving, as well as the problem of high noise. It makes it possible to achieve uniform air supply without the need for complex air ducts outside the machine, and no complex air duct system is required after the air supply port of the air conditioner main unit, which greatly reduces costs. In addition, the air is supplied directly to the static pressure box of the passenger compartment after the air supply port of the air conditioner, without air duct flow loss, and without the need for a high-pressure head fan to supply air, which achieves energy saving and can reduce noise by 2-3dB. In addition, the air duct maintenance is also relatively convenient.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air supply device, characterized in that: include: A main air duct (10) and a plurality of horizontal air ducts connected to the main air duct (10), an air outlet (21) being formed at the end of each of the horizontal air ducts, and an air inlet (11) being formed in the vertical direction of the main air duct (10); an axial flow fan (30), arranged on the air inlet (11) and used for introducing air flow into the air inlet (11); A guide plate (40) is arranged on an inner wall of the main air duct (10) opposite to the air inlet (11), and the guide plate (40) is used to evenly disperse the airflow introduced by the air inlet (11) into each of the horizontal air ducts; The guide plate (40) is formed with a conical air guide body (41) protruding toward the air inlet (11); The main air duct (10) is in the shape of a rectangle.

2. The air supply device according to claim 1, characterized in that: A plurality of air outlets (21) are formed on the horizontal air duct.

3. The air supply device according to claim 2, characterized in that: A first guide plate assembly (50) is arranged in the horizontal air duct, and the first guide plate assembly (50) is used to distribute the airflow entering the horizontal air duct to each of the air outlets (21).

4. The air supply device according to claim 3, characterized in that: A second guide plate assembly (60) is also provided in the horizontal air duct. The second guide plate assembly (60) is spaced apart from the first guide plate assembly (50). The second guide plate assembly (60) is used to cooperate with the first guide plate assembly (50) to achieve uniform air discharge from each of the air outlets (21).

5. The air supply device according to claim 4, characterized in that: The plurality of horizontal air ducts include a left air duct (20a) and a right air duct (20b), and the left air duct (20a) and the right air duct (20b) are respectively connected to the left and right sides of the main air duct (10).

6. The air supply device according to claim 5, characterized in that: The left air duct (20a) and the right air duct (20b) are respectively perpendicular to the main air duct (10).

7. The air supply device according to claim 6, characterized in that: The upper and lower ends of the left air duct (20a) respectively form two air outlets (21), and the upper and lower ends of the right air duct (20b) also respectively form two air outlets (21).

8. The air supply device according to claim 7, characterized in that: The first guide plate assembly (50) comprises a curved first guide plate (51) and a curved second guide plate (52); the first guide plate (51) and the second guide plate (52) are connected in a herringbone shape and are respectively arranged in the left air duct (20a) and the right air duct (20b) toward the main air duct (10); the first guide plate (51) and the second guide plate (52) are used to distribute airflow to the air outlets (21) located at the upper and lower ends of the left air duct (20a) / the right air duct (20b).

9. The air supply device according to claim 8, characterized in that: The first guide plate assembly (50) further comprises an air regulating guide plate (53), wherein the air regulating guide plate (53) is rotatably arranged at an adjacent position connected to the first guide plate (51) and the second guide plate (52), and the air regulating guide plate (53) is used to regulate the air volume passing through the first guide plate (51) and the second guide plate (52).

10. The air supply device according to claim 8, characterized in that: The second deflector assembly (60) includes a curved third deflector (61) and a curved fourth deflector (62). The third deflector (61) and the fourth deflector (62) are arranged in a "儿" shape and are spaced apart from the first deflector (51) and the second deflector (52) respectively. The third deflector (61) and the first deflector (51) cooperate to evenly distribute the air flow to the air outlet (21) located at the upper end of the left air duct (20a) / the right air duct (20b). The fourth deflector (62) and the second deflector (52) cooperate to evenly distribute the air flow to the air outlet (21) located at the lower end of the left air duct (20a) / the right air duct (20b).

11. The air supply device according to claim 1, characterized in that: Sponges (70) are provided on the inner wall of the main air duct (10) and / or the inner wall of the horizontal air duct.

12. The air supply device according to claim 1, characterized in that: The air supply device further includes a chassis (80), and the main air duct (10) and the horizontal air duct are installed on the chassis (80).

13. The air supply device according to claim 1, characterized in that: A deflector ring (111) is provided on the air inlet (11), and the axial flow fan (30) is installed on the deflector ring (111).

14. An air conditioning unit, comprising an air supply device, characterized in that: The air supply device is the air supply device according to any one of claims 1 to 13.

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