Air conditioning system for a two-story vehicle, and a two-story vehicle

Abstract

A two-story vehicle having an air conditioning system for a two-story vehicle. The air conditioning system of the two-story vehicle is an air conditioning box configured to be disposed in the two-story vehicle body, and the air conditioning box is provided with two upper floor air supply ports, an air conditioning box, and an upper floor main air passage configured to be disposed at the top of the upper floor of the two-story vehicle body, and the upper floor main air passage is provided with two upper floor air inlets, and the upper floor air supply port and the upper floor air inlet are horizontally offset, an upper floor main air passage, and two upper floor transition air passages, each upper floor transition air passage communicating with one upper floor air supply port and one upper floor air inlet respectively, the inner wall of the upper floor transition air passage smoothly transitioning with the inner wall of the upper floor air supply port, and the inner wall of the upper floor transition air passage smoothly transitioning with the inner wall of the upper floor air inlet, including two upper floor transition air passages.

Description

Technical Field

[0001] Cross - reference to Related Applications This disclosure claims priority to Chinese Patent Application No. 202221482199.2, titled "AIR CONDITIONING SYSTEM OF DOUBLE - DECKER VEHICLE, AND DOUBLE - DECKER VEHICLE", filed on November 30, 2021, the entire content of which is incorporated herein by reference.

[0002] This disclosure relates to the field of double - decker vehicles, and specifically, to an air - conditioning system for double - decker vehicles and double - decker vehicles.

Background Art

[0003] Currently, in order to enable double - decker vehicles to meet the requirements of passengers' riding comfort, an air - conditioning system is often arranged in the vehicle, and air is supplied to the upper deck and the lower deck of the vehicle through the air - conditioning system. Due to the relatively complex structure of double - decker vehicles, the related technology cannot meet the requirements of air supply in different vehicle areas. In the related technology, in the process of supplying air to the upper deck of the vehicle through the air - conditioning system, if there is a large glass area on the upper deck, the air supply effect is insufficient, and the air supply requirement for the upper deck cannot be met.

Summary of the Invention

Problems to be Solved by the Invention

[0004] This disclosure is intended to provide a new technical solution for the air - conditioning system of double - decker vehicles and double - decker vehicles.

Means for Solving the Problems

[0005] According to a first aspect of this disclosure, an air - conditioning system for a double - decker vehicle is provided, and the air - conditioning system for the double - decker vehicle is An air conditioner box, wherein the air conditioner box is arranged on the body of a two-story vehicle, and two upper-story air outlets are provided in the air conditioner box, the air conditioner box, and An upper-story main air passage, wherein the upper-story main air passage is arranged at the top of the upper story of the two-story vehicle body, and two upper-story air inlets are provided in the upper-story main air passage, and the upper-story air outlet and the upper-story air inlet are horizontally offset, the upper-story main air passage, and Two upper-story transition air passages, wherein each of the two upper-story transition air passages is respectively communicated with one upper-story air outlet and one upper-story air inlet, the two upper-story transition air passages including The inner wall of the upper-story transition air passage and the inner wall of the upper-story air outlet are smoothly transitioned, and the inner wall of the upper-story transition air passage and the inner wall of the upper-story air inlet are smoothly transitioned.

[0006] In one embodiment, the cross-section of the upper-story transition air passage is rectangular, and the minimum radius of curvature at each of the four corners of the rectangle is 25 mm, The upper-story transition air passage includes a first pipe portion, a second pipe portion, and a third pipe portion, and the first pipe portion, the second pipe portion, and the third pipe portion are continuously communicated. The first pipe portion is communicated with the upper-story air outlet, and the third pipe portion is communicated with the upper-story air inlet. The first pipe portion is provided with a first arcuate pipe wall and a second arcuate pipe wall. The first arcuate pipe wall and the second arcuate pipe wall are arranged on the opposite sides. The minimum radius of curvature of the first arcuate pipe wall is 6 mm, and the minimum radius of curvature of the second arcuate pipe wall is 382 mm. The bending directions of the first arcuate pipe wall and the second arcuate pipe wall face the same side. The second pipe portion is provided with a third pipe wall and a fourth pipe wall. The third pipe wall and the fourth pipe wall are arranged on opposite sides. The third pipe wall includes a third arcuate pipe wall located on one side of the first pipe portion and a first straight pipe wall located on one side of the third pipe portion. The minimum radius of curvature of the third arcuate pipe wall is 78 mm. The third arcuate pipe wall is displaced in a direction away from the fourth arcuate pipe wall. The maximum angular displacement of the third arcuate pipe wall is 11°. The dimension of the third arcuate pipe wall in the direction of the angular offset is 50 mm. The fourth pipe wall includes a fourth arcuate pipe wall located on one side of the third pipe portion and a second straight pipe wall located on one side of the first pipe portion. The minimum radius of curvature of the fourth arcuate pipe wall is 746 mm. The fourth arcuate pipe wall is displaced in a direction away from the third arcuate pipe wall. The maximum angular displacement of the fourth arcuate pipe wall is 4°. The third pipe portion is provided with a fifth arcuate pipe wall and a sixth arcuate pipe wall. The minimum radius of curvature of the fifth arcuate pipe wall is 170 mm. The minimum radius of curvature of the sixth arcuate pipe wall is 73 mm. The bending directions of the fifth arcuate pipe wall and the sixth arcuate pipe wall face the same side.

[0007] In one embodiment, the two upper transition air passages are symmetrically arranged. The concave surfaces of the first arcuate pipe wall and the second arcuate pipe wall face the region between the two upper floor transition air passages. The concave surface of the third arcuate pipe wall faces the region between the two upper floor transition air passages. The fourth arcuate pipe wall is displaced outward of the two upper floor transition air passages in the direction from one side of the third pipe portion to one side of the first pipe portion. The fifth arcuate pipe wall and the sixth arcuate pipe wall are curved toward the inside of the two-story vehicle body. The concave surfaces of the fifth arcuate pipe wall and the sixth arcuate pipe wall face the inside of the two-story vehicle body.

[0008] In one embodiment, the communication portion between the first pipe portion and the upper floor air outlet has a first cross-sectional area, the communication portion between the second pipe portion and the first pipe portion has a second cross-sectional area, the communication portion between the third pipe portion and the second pipe portion has a third cross-sectional area, and the communication portion between the third pipe portion and the upper floor air inlet has a fourth cross-sectional area. 55% to 70% of the first cross-sectional area is equal to the second cross-sectional area, 85% to 95% of the second cross-sectional area is equal to the third cross-sectional area, and 85% to 95% of the third cross-sectional area is equal to the fourth cross-sectional area.

[0009] In one embodiment, the upper floor main air passage corresponds to the distribution of the upper floor seats of the body of the two-story vehicle. The upper floor main air passage includes two upper floor side air passages corresponding to the seats on both sides of the upper floor. Each upper floor side air passage is communicated with one of the upper floor transition air passages. The two upper floor side air passages are provided with first upper floor air holes corresponding to the seats on both sides of the upper floor. The two upper floor side air passages include a first upper floor side air passage and a second upper floor side air passage. The first upper floor side air passage is located on one side where the staircase of the two-story vehicle body is located. The first upper floor air holes of the first upper floor side air passage are staggered with the area where the staircase of the two-story vehicle body is located. In the second upper floor side air passage, second upper floor air holes exist between adjacent first upper floor air holes in the area on the opposite side of the staircase of the two-story vehicle body.

[0010] In one embodiment, the upper floor main air passage further includes an upper floor front air passage corresponding to the upper floor front seats. The upper floor front air passage is communicated with the two upper floor side air passages. The upper floor front air passage is an annular air passage. The upper floor front air holes are arranged in the annular air passage. The upper floor front air holes are the first adjustable air holes.

[0011] In one embodiment, the distance between the first upper floor air hole in the front-rear direction of the two-story vehicle body and the passenger face area corresponding to the seat is 180 mm to 250 mm.

[0012] In one embodiment, the air conditioning system further includes a driver's cab air passage and an evaporator. The evaporator communicates with the air-conditioning box. The evaporator is provided with a cab return air vent facing the cab. The evaporator communicates with the cab air passage, and the cab air passage extends to the top of the cab. The cab air passage is provided with a second adjustable air hole.

[0013] In one embodiment, the air-conditioning system further includes two lower-floor transition air passages and two lower-floor main air passages. The air-conditioning box is provided with two lower-floor air outlets. The two lower-floor main air passages are respectively connected to one of the lower-floor air outlets through one of the lower-floor transition air passages. The lower-floor main air passage is provided with a first lower-floor air hole corresponding to the lower-floor seat. The lower-floor main air passage used for being arranged on one side of the door of the two-story vehicle body is provided with a second lower-floor air hole corresponding to the door. The second lower-floor air hole includes one to three rows of strip-shaped air holes.

[0014] In one embodiment, the air-conditioning system further includes an upper-floor return air passage. The upper-floor return air passage communicates with the air-conditioning box. The upper-floor return air passage is provided with an upper-floor return air hole, and the upper-floor return air hole is located in the bottom area at the rear side of the upper floor of the two-story vehicle body.

[0015] In one embodiment, the air-conditioning system further includes a lower-floor return air passage. The lower-floor return air passage communicates with the upper-floor return air passage. The lower-floor return air passage is provided with a lower-floor return air hole, and the lower-floor return air hole is located in the rear top area of the lower floor of the two-story vehicle body. The lower-floor return air hole is equipped with a vent switch device.

[0016] According to a second aspect of the present disclosure, a two-story vehicle is provided. The two-story vehicle includes a two-story vehicle body, and the two-story vehicle body is equipped with an air-conditioning system of the two-story vehicle as the first aspect.

Advantages of the Invention

[0017] The present disclosure realizes that each upper-floor transition air passage communicates with the upper-floor air outlet and the upper-floor air inlet respectively, and the inner wall of the upper-floor transition air passage and the inner wall of the upper air outlet are smoothly transitioned, and the inner wall of the upper-floor transition air passage and the inner wall of the upper-floor air inlet are smoothly transitioned. By the smooth transition, the problems of pressure loss and non-uniform air velocity during the process of air supply from the air conditioner box to the upper-floor main air passage can be avoided, the resistance of the upper-floor transition air passage to the air supply from the air conditioner box to the upper-floor main air passage can be reduced, the air supply volume can be increased, the air supply efficiency of the air conditioning system can be improved, and the air velocity sent to the vehicle through the upper-floor main air passage can be made constant to reduce noise.

[0018] Other features and advantages of the present disclosure will become apparent from the detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0019] The drawings form a part of this specification and are used to explain the embodiments of the present disclosure and to elaborate on the principles of the present disclosure together with this specification.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0021] Various exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that, unless specifically stated otherwise, the relative configurations of components and steps, mathematical formulas, and numerical values described in those embodiments do not limit the scope of the present disclosure.

[0022] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its applications, or uses.

[0023] Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered as part of this specification where appropriate.

[0024] In all examples shown and discussed in this specification, any specific values should be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.

[0025] Note that in the following figures, the same reference numbers and characters denote the same items, so once an item is defined in a figure, no further discussion about it is required in subsequent figures.

[0026] According to an embodiment of the present disclosure, as shown in FIGS. 1 to 7, an air conditioning system for a two-story vehicle is provided, and the air conditioning system for the two-story vehicle includes An air conditioner box 1, wherein the air conditioner box 1 is disposed in the body of the two-story vehicle, and two upper floor air outlets are provided in the air conditioner box 1, the air conditioner box 1, and An upper floor main air duct 32, wherein the upper floor main air duct 32 is disposed at the top of the upper floor of the two-story vehicle body, and two upper floor air inlets are provided in the upper floor main air duct 32, and the upper floor air outlet and the upper floor air inlet are horizontally offset, the upper floor main air duct 32, and Two upper-story transition air passages 31, each of the two upper-story transition air passages 31 being in communication with one upper-story air outlet and one upper-story air inlet, respectively including The inner wall of the upper-story transition air passage 31 and the inner wall of the upper-story air outlet smoothly transition, and the inner wall of the upper-story transition air passage 31 and the inner wall of the upper-story air inlet smoothly transition. The upper-story air outlet is the outlet of the flow path that supplies air from the air conditioner box 1 to the upper-story transition air passage 31, and the inner wall of the upper-story air outlet means the inner wall of the flow path. The inner wall of the upper-story air inlet is the inner wall of the upper-story main air passage 32. The smooth transition smooths the inner surface of the pipeline communication part, and the inner surface of the pipeline is streamline-shaped.

[0027] In an embodiment of the present disclosure, each upper-story transition air passage 31 is in communication with one upper-story air outlet and one upper-story air inlet, respectively. The inner wall of the upper-story transition air passage 31 and the inner wall of the upper-story air outlet smoothly transition, whereby when the air conditioner box 1 supplies air to the upper-story transition air passage 31, the energy loss caused by the formation of internal vortices in the upper-story transition air passage 31 can be avoided. The inner wall of the upper-story transition air passage 31 and the inner wall of the upper-story air inlet smoothly transition, whereby when the air in the upper-story transition air passage 31 enters the upper-story main air passage 32, the energy loss caused by the formation of internal vortices in the upper-story main air passage 32 can be avoided. It is beneficial to increase the air velocity of the holes in the upper-story main air passage 32.

[0028] The smooth transition can avoid the problems of pressure loss and non-uniform wind speed during the process of air supply from the air conditioner box 1 to the upper-story main air passage 32, reduce the resistance of the upper-story transition air passage 31 to the air supply from the air conditioner box 1 to the upper-story main air passage 32, increase the air supply volume, improve the air supply efficiency of the air conditioning system, and make the air velocity sent to the vehicle through the upper-story main air passage 32 constant to reduce noise.

[0029] In one embodiment, the air conditioner box 1 may be provided at the rear side or the front side of the two-story vehicle body. Under the condition that the air conditioner box 1 is provided at the rear side of the two-story vehicle body, the air conditioner box 1 is communicated with the upper floor transfer air passage 31 through the upper floor air outlet. The upper floor air inlet is placed at the rear side of the two-story vehicle body. Under the condition that the air conditioner box is arranged at the front side of the two-story vehicle body, the upper floor air inlet is placed at the front side of the two-story vehicle body.

[0030] In one embodiment, a condensing air sector 5 is provided below the air conditioner box 1, and the condensing air sector 5 is used to cool the air conditioner box 1 and the evaporator 61 behind the driver.

[0031] The cross-sectional area 32A (m 2 ) of the air passage on one side of the upper floor main air passage is not less than the air output Q (m 3 / s) of the air conditioning system to one side of the upper floor air outlet divided by 5.5, which maximizes the utilization of the cavity of the air conditioning system. Electrical components such as speakers do not exist in the upper floor main air passage 32. The pipelines are concentrated in the area farthest from the holes of the upper floor main air passage 32 using wire harnesses. The inside of the upper floor main air passage 32 is covered with insulating cotton, and the smoothness of the upper floor main air passage 32 is considered to avoid vortices in the flow field inside the upper floor main air passage 32 and reduce the flow resistance.

[0032] In one embodiment, as shown in FIGS. 1 to 5, the cross-section of the upper floor transfer air passage 31 is rectangular, and the minimum radius of curvature at each of the four corners of the rectangle is 25 mm. The upper transfer air passage 31 includes a first pipe portion 311, a second pipe portion 312, and a third pipe portion 313. The first pipe portion 311, the second pipe portion 312, and the third pipe portion 313 are continuously communicated. The first pipe portion 311 is communicated with the upper floor air outlet, and the third pipe portion 313 is communicated with the upper floor air inlet. The first pipe portion 311 is provided with a first arcuate pipe wall 3111 and a second arcuate pipe wall 3112. The first arcuate pipe wall 3111 and the second arcuate pipe wall 3112 are arranged on opposite sides. The minimum radius of curvature of the first arcuate pipe wall 3111 is 6 mm, and the minimum radius of curvature of the second arcuate pipe wall 3112 is 382 mm. The bending directions of the first arcuate pipe wall 3111 and the second arcuate pipe wall 3112 face the same side. The second pipe portion 312 is provided with a third pipe wall and a fourth pipe wall. The third pipe wall and the fourth pipe wall are arranged on opposite sides. The third pipe wall includes a third arcuate pipe wall 3121 located on one side of the first pipe portion 311 and a first straight pipe wall 3123 located on one side of the third pipe portion 313. The minimum radius of curvature of the third arcuate pipe wall 3121 is 78 mm. The third arcuate pipe wall 3121 is displaced in a direction away from the fourth arcuate pipe wall 3122. The maximum angular displacement of the third arcuate pipe wall 3121 is 11°. The dimension of the third arcuate pipe wall 3121 in the direction of the angular displacement is 50 mm. The displacement of the third arcuate pipe wall 3121 forms a concave structure that does not conflict with the fluid characteristics of the upper-stage transition air passage 31 so as to avoid forming a low-speed vortex in the upper-stage transition air passage 31.

[0033] The fourth pipe wall includes a fourth arcuate pipe wall 3122 located on one side of the third pipe portion 313 and a second straight pipe wall 3124 located on one side of the first pipe portion 311. The minimum radius of curvature of the fourth arcuate pipe wall 3122 is 746 mm. The fourth arcuate pipe wall 3122 is displaced in a direction away from the third arcuate pipe wall 3121. The maximum angular displacement of the fourth arcuate pipe wall 3122 is 4°. The third pipe portion 313 is provided with a fifth arcuate pipe wall 3131 and a sixth arcuate pipe wall 3132. The minimum radius of curvature of the fifth arcuate pipe wall 3131 is 170 mm, and the minimum radius of curvature of the sixth arcuate pipe wall 3132 is 73 mm. The bending directions of the fifth arcuate pipe wall 3131 and the sixth arcuate pipe wall 3132 face the same side. The structure of the third pipe portion 313 effectively reduces the resistance of the air entering from the upper floor transition air passage 31 to the upper floor main air passage 32. Compared with the related art, the resistance of the air entering the upper floor main air passage 32 is reduced by at least 23%. The present disclosure effectively enables the air entering the upper floor main air passage 32 to flow out from the upper floor air outlet of the upper floor main air passage 32 at a certain speed, guarantees the constancy of the wind speed entering the vehicle, and avoids the problem of wind pressure resistance caused by adjusting the wind speed using an air outlet cover and other methods.

[0034] In an embodiment of the present disclosure, the first pipe portion 311, the second pipe portion 312, and the third pipe portion 313 form an upper floor transition air passage 31 having a streamline structure. Therefore, the inner wall of the upper floor transition air passage 31 is associated with the flowing trend of the fluid, the vortices and energy losses in the cavity are effectively reduced, the resistance of the upper floor transition air passage 31 to the wind is reduced, and the air supply efficiency of the air conditioning system is improved. The air conditioning system of the present disclosure can reduce the resistance of the upper floor transition passage 31 to the wind by at least 15% compared with the related art.

[0035] The cross-section of the upper floor transition air passage 31 is rectangular. The four sides of the rectangle form four corners, and each corner is an arcuate corner having a minimum radius of curvature of 25 mm. Thereby, the formation of vortices in the cavity and the energy loss between the adjacent pipe walls of the upper part transition passage 31 can be avoided. For example, the first pipe portion 311, the second pipe portion 312, and the third pipe portion 313 each have a rectangular cross-section.

[0036] For example, the first pipe portion 311 further includes two pipe walls arranged on opposite sides, and these two pipe walls are connected to the first arc-shaped pipe wall 3111 and the second arc-shaped pipe wall 3112 to form the first pipe portion 311, and the cross-section of the first pipe portion 311 is rectangular.

[0037] For example, the second pipe portion 312 further includes two pipe walls arranged on opposite sides, and these two pipe walls are connected to the third pipe wall and the fourth pipe wall to form the second pipe portion 312, and the cross-section of the second pipe portion 312 is rectangular.

[0038] For example, the third pipe portion 313 further includes two pipe walls arranged on opposite sides, and these two pipe walls are connected to the fifth arc-shaped pipe wall 3131 and the sixth arc-shaped pipe wall 3132 to form the third pipe portion 313, and the cross-section of the third pipe portion 313 is rectangular.

[0039] In one embodiment, as shown in FIGS. 1 to 7, the two upper-level transition paths 31 are symmetrically arranged. The concave surfaces of the first arc-shaped pipe wall 3111 and the second arc-shaped pipe wall 3112 face the region between the two upper-level transition air paths 31, the concave surface of the third arc-shaped pipe wall 3121 faces the region between the two upper-level transition air paths 31, the fourth arc-shaped pipe wall 3122 is offset outward from the two upper-level transition air paths 31 in the direction from one side of the third pipe portion 313 to one side of the first pipe portion 311, the fifth arc-shaped pipe wall 3131 and the sixth arc-shaped pipe wall 3132 are curved toward the inside of the two-story vehicle body, and the concave surfaces of the fifth arc-shaped pipe wall 3131 and the sixth arc-shaped pipe wall 3132 face the inside of the two-story vehicle body.

[0040] In one embodiment of the present disclosure, the two upper-level transition paths 31 are symmetrically arranged so as to avoid blocking the rear viewing glass 30 of the two-story vehicle in order to avoid affecting the passengers' view from the rear viewing glass 30.

[0041] The structures of the first arcuate pipe wall 3111, the second arcuate pipe wall 3112, the third arcuate pipe wall 3121, the fourth arcuate pipe wall 3122, the fifth arcuate pipe wall 3131, and the sixth arcuate pipe wall 3132 can ensure the streamline structure of the upper-stage transition air passage 31 and can conform the inner wall of the upper-stage transition air passage 31 to the air flow tendency. Therefore, the vortices and energy consumption losses in the cavity formed by the air supply through the upper-stage transition air passage 31 are effectively reduced.

[0042] In one embodiment, the first pipe portion 311 has a first cross-sectional area communicating with the upper-stage air inlet, the second pipe portion 312 has a second cross-sectional area communicating with the first pipe portion 311, the third pipe portion 313 has a third cross-sectional area communicating with the second pipe portion 312, and the third pipe portion 313 has a fourth cross-sectional area communicating with the upper-stage air inlet. 55% - 70% of the first cross-sectional area is equal to the second cross-sectional area, 85% - 95% of the second cross-sectional area is equal to the third cross-sectional area, and 85% - 95% of the third cross-sectional area is equal to the fourth cross-sectional area.

[0043] In the embodiments of the present disclosure, the cross-sectional areas of the upper-stage transition passages 31 at different positions are different. Therefore, the streamline-shaped upper-stage transition passage 31 can effectively avoid energy loss and vortices in the cavity.

[0044] In one embodiment, the upper-stage main air passage 32 corresponds to the distribution of the upper-stage seats of the body of the two-story vehicle. The upper-stage main air passage 32 includes two upper-stage side air passages corresponding to the seats on both sides of the upper stage. Each upper-stage side air passage is communicated with one of the upper-stage transition air passages 31. The two upper-stage side air passages are provided with first upper-stage air holes corresponding to the seats on both sides of the upper stage. For example, the first upper-stage air holes may be distributed holes or adjustable holes.

[0045] The two upper-side air passages include a first upper-side air passage 331 and a second upper-side air passage 332. The first upper-side air passage 331 is located on one side where the staircase of the two-story vehicle body is located. The first upper air holes 331 of the first upper-side air passage are staggered from the area where the staircase of the two-story vehicle body is located. In the second upper-side air passage 332 in the area on the opposite side of the two-story vehicle body staircase, a second upper air hole 81 exists between adjacent first upper air holes.

[0046] In an embodiment of the present disclosure, the first upper air holes of the first upper-side air passage 331 are offset from the area where the staircase of the two-story vehicle body is located. Therefore, there are no holes in the first upper-side air passage in the area on the opposite side of the two-story vehicle body staircase. This avoids the formation of collisions when the low-temperature air flow on the lower floor of the vehicle flows upward to the upper floor. The time that passengers stay on the staircase is short, so the comfort of the passengers is not affected. Also, the air volume of the air holes in other areas of the upper main air passage 32 can be effectively improved, and the temperature comfort of the passengers on the upper floor is greatly improved.

[0047] In the second upper-side air passage 332 in the area on the opposite side of the two-story vehicle body staircase, a second upper air hole 81 exists between adjacent first upper air holes. Therefore, it can be guaranteed that the temperature of the side part and the staircase area 23 is uniform, and while the air volume of the seats is guaranteed, the air volume loss in the non-passenger area is reduced.

[0048] In one embodiment, the first upper air holes include upper window air holes 83 and upper passage air holes 84. The upper window air holes 83 are arranged corresponding to the upper window side seats. For example, the upper window holes 83 blow air toward the upper window side seats. The upper passage air holes 84 are arranged corresponding to the upper passage side seats. For example, the upper passage air holes 84 blow air toward the upper passage. For example, one hole is provided for each seat. The upper window air holes 83 and the upper passage air holes 84 may be distributed holes or adjustable holes.

[0049] In one embodiment, the distance between the first upper floor air hole and the corresponding passenger face area of the seat in the front-rear direction of the two-story vehicle body is 180 mm to 250 mm.

[0050] For example, the front-rear direction of the vehicle is the X-axis direction, and the axial distance of the X-axis between the first upper floor air hole and the corresponding passenger face area of the seat is 180 mm to 250 mm. The distance between the center of the air hole of each first upper floor air hole and the face of the passenger is maintained between 180 mm and 250 mm, ensuring the comfort of the passenger. The position of the face of the occupant of the seat is the position of the face of the occupant when seated on the seat in the correct seating position.

[0051] The upper floor window air hole 83 blows air to the window side seat, and the passengers in the upper floor window side seat are affected by the heat radiation from the skylight viewing glass, the skylight side viewing glass, and the side glass. The distribution of the upper floor window air holes 83 in the present disclosure enables the air to blow directly to the passenger seat near the window, effectively improving the comfort of the passengers near the window. The upper floor passage air hole 84 enables the wind to blow out closer to the passage, and the upper floor passage air hole 84 is beneficial for reducing the temperature of the heat of the upper floor skylight and improving the uniformity of the vehicle temperature.

[0052] In one embodiment, as shown in FIGS. 1 to 3, the upper floor main air passage 32 further includes an upper floor front air passage 34 corresponding to the upper floor front seat. The upper floor front air passage 34 communicates with two upper floor side air passages. The upper floor front air passage 34 is an annular air passage, and the upper floor front air holes are arranged in the annular air passage. The upper floor front air holes are the first adjustable air holes 82. The first adjustable hole 82 is an adjustable hole.

[0053] Glass is provided on the front side of the upper floor of the vehicle. The annular air passage can conform to the vehicle structure on the front side of the upper floor. The upper floor front air holes are the first adjustable air holes 82, and the air volume of these air holes can be adjusted through the first adjustable air holes 82. Therefore, the thermal comfort of the passengers on the upper front side is improved. For example, eight first adjustable air holes 82 are distributed in the annular air passage. The eight first adjustable air holes 82 are symmetrically distributed on both sides of the vehicle passage.

[0054] The eight first adjustable air holes 82 are distributed in the annular air passage to solve the problems of high radiant heat for the front passengers and high solar radiant heat for the passengers on the window side, improving the comfort of the passengers.

[0055] In one embodiment, the cross-sectional area A (cm 2 ) of the upper floor main air passage 32 is equal to the total cross-sectional area A (cm 2 ) of the air holes on one side of the upper floor main air passage 32. For example, the cross-sectional area of the first upper floor side air passage 331 is equal to the sum of the area of the first upper floor air holes of the first upper floor side air passage 331 and half of the area of the upper floor air holes of the upper floor front air passage 34 of the annular air passage.

[0056] In one embodiment, the air conditioning system further includes a driver's cab air passage 63 and an evaporator 61. The evaporator 61 is communicated with the air conditioning box 1, and the evaporator 61 can be cooled through the air conditioning box 1. The evaporator 61 is equipped with a driver's cab return air hole 62 facing the driver's cab. The evaporator 61 is communicated with the driver's cab air passage 63. The driver's cab air passage 63 extends to the top of the driver's cab, and the driver's cab air passage 63 is provided with second adjustable air holes 72.

[0057] The air inside the driver's cab enters the evaporator 61 through the driver's cab return air hole 62, is cooled, sent to the driver's cab air passage 63, and then blows out towards the driver's cab through the second adjustable air holes 72.

[0058] For example, the air blown through the second adjustable air hole 72 towards the driver's cab is directed towards the driver's head.

[0059] The cab air passage 63 is equipped with a plurality of second adjustable air holes 72. The second adjustable air hole 72 located in the middle area is 190 mm to 210 mm away from the tip of the driver's nose in the X-axis direction. This can ensure the thermal comfort of the driver's area and solve the problem that the lower main air passage 2 is blocked by the staircase area 23 and cannot supply air to the cab.

[0060] In one embodiment, as shown in FIG. 6, the air conditioning system further includes two lower floor transition air passages 21 and two lower floor main air passages 2. The air conditioning box 1 has two lower floor air outlets, and the two lower floor main air passages 2 are respectively connected to one of the lower floor air outlets through one of the lower floor transition air passages 21. The lower floor main air passage 2 is provided with a first lower floor air hole corresponding to the lower floor seat. The second lower floor air hole (74) corresponding to the door is located in the lower floor main air passage (2) located on one side of the vehicle door. The second lower floor air hole (74) includes one to three rows of strip-shaped air holes.

[0061] In one embodiment of the present disclosure, the first lower floor air hole supplies air to the lower floor seat. For example, the lower floor side air holes include a lower floor window air hole 73 corresponding to the lower floor window side seat and a lower floor passage air hole 71 corresponding to the lower floor passage side seat. The lower floor window air hole 73 and the lower floor passage air hole 71 may be dispersion holes or adjustable holes. The air from the lower floor window hole 73 blows towards the lower floor passenger seat, while the air from the lower floor passage hole 71 blows towards the lower passage, providing good comfort for both standing and seated passengers.

[0062] The second lower air vent 74 includes one to three rows of strip-shaped air vents, and the strip-shaped air vents can form an air curtain with a specific temperature difference and a uniform flow velocity distribution on the vehicle door, enabling passengers to feel cool immediately when entering the vehicle in summer and improving the thermal comfort of the passengers.

[0063] In one embodiment, the cross-sectional area A (cm 2 ) of the lower main air passage 2 installed on the side of the vehicle door is equal to the total area A (cm 2 ) of the lower window air passage 73, the lower passage air passage 71, and the second lower air passage 74 installed in the lower main air passage 2 on the side of the vehicle door.

[0064] In one embodiment, as shown in FIG. 4, the air conditioning system further includes an upper floor return air passage 44, and the upper floor return air passage 44 is connected to the air conditioner box 1. The upper floor return air passage 44 has an upper floor return air vent 43 located in the rear bottom area of the upper floor of the two-story vehicle body.

[0065] As shown in FIG. 7, the areas of the upper floor skylight vision glass 10 and the skylight side vision glass 20 of the two-story vehicle are large. When it is hot in summer, the upper floor return air vent 43 is installed in the rear bottom area of the upper floor of the vehicle. Therefore, cooler return air flows from the staircase area 23 to the upper floor return air vent 43 and then returns to the air conditioner box 1, thereby further reducing the temperature of the upper floor of the vehicle. The embodiments of the present disclosure are applicable to two-story vehicles with a large skylight glass area and a high air conditioning system load on the upper floor.

[0066] In one embodiment, as shown in FIG. 4, the air conditioning system further includes a lower floor return air passage 42, and the lower floor return air passage 42 communicates with the upper floor return air passage 44. The lower floor return air passage 42 has a lower floor return air vent 41, and the lower floor return air vent 41 is located in the rear top area of the lower floor of the vehicle. The lower floor return air vent 41 is equipped with an air vent switch device 40.

[0067] The opening and closing of the lower floor air return vent 41 can be controlled by the orifice switch device 40. According to the temperature situation on the upper floor, the lower floor air return vent 41 can be selected to be opened, and the lower floor air return passage 42 can be connected to the upper floor air return passage 44. Therefore, the returned air can be sent back to the air conditioner box 1 together from the upper floor air return passage 44.

[0068] According to another embodiment of the present disclosure, a two-story vehicle is provided, including a two-story vehicle body equipped with an air conditioning system for a two-story vehicle as described in any one of the embodiments of the present disclosure.

[0069] The above two-story vehicle has the technical effects brought about by the air conditioning system of the two-story vehicle according to the embodiment of the present disclosure.

[0070] All vehicles in the present disclosure are two-story vehicles in the present disclosure.

[0071] In the above embodiments, the differences between the embodiments are emphasized and described. As long as the differences do not conflict, different optimization features between the embodiments may be combined to form a better embodiment. Considering the conciseness of the text, further explanations are omitted here.

[0072] Although some specific embodiments of the present disclosure are described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for the purpose of illustration and are not intended to limit the scope of the present disclosure. It will be recognized by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Explanation of Reference Numerals

[0073] 1 Air conditioner box 10 Skylight vision glass 20 Side skylight vision glass 30 Rear vision glass 5 Concentrated air sector Lower main air passage 21 Lower transfer path 23 Stairway area 31 Upper transfer path 311 First pipe part 312 Second pipe part 313 Third pipe part 3111 First arcuate pipe wall 3112 Second arcuate pipe wall 3121 Third arcuate pipe wall 3122 Fourth arcuate pipe wall 3123 First straight pipe wall 3124 Second straight pipe wall 3131 Fifth arcuate pipe wall 3132 Sixth arcuate pipe wall 32 Upper main air passage 331 First upper side air passage 332 Second upper side air passage 34 Upper front air passage 35 First upper side air passage in the area opposite to the staircase of the two-story vehicle body 40 Hole switch device 41 Lower return air hole 42 Lower return air path 43 Upper return air hole 44 Upper return air path 61 Evaporator 62 Driver's cab return air hole 63 Driver's cab air path 71 Lower passage air hole 72 Second adjustable air hole 73 Lower window air hole 74 Second lower air hole 81 Second upper air hole 82 First adjustable air hole 83 Upper window air hole 84 Upper passage air hole

Claims

1. An air conditioning system for a two-story vehicle, An air conditioner box (1), wherein the air conditioner box (1) is arranged on the body of the two-story vehicle, and two upper floor air outlets are provided in the air conditioner box (1), the air conditioner box (1); The upper floor main air passage (32), wherein the upper floor main air passage (32) is arranged at the top of the upper floor of the two-story vehicle body, and two upper floor air inlets are provided in the upper floor main air passage (32), and the upper floor air outlet and the upper floor air inlet are horizontally offset, the upper floor main air passage (32); Two upper floor transition air passages (31), each of the two upper floor transition air passages (31) being communicated with one upper floor air outlet and one upper floor air inlet respectively, the two upper floor transition air passages (31); comprising An air conditioning system for a two-story vehicle, wherein the inner wall of the upper floor transition air passage (31) and the inner wall of the upper floor air outlet are smoothly transitioned, and the inner wall of the upper floor transition air passage 31 and the inner wall of the upper floor air inlet are smoothly transitioned.

2. The cross section of the upper floor transition air passage (31) is rectangular, and the minimum radius of curvature at each of the four corners of the rectangle is 25 mm, The upper floor transition air passage (31) comprises a first pipe portion (311), a second pipe portion (312), and a third pipe portion (313), the first pipe portion (311), the second pipe portion (312), and the third pipe portion (313) are continuously communicated, the first pipe portion (311) is communicated with the upper floor air outlet, and the third pipe portion (313) is communicated with the upper floor air inlet, The first pipe portion (311) is provided with a first arcuate pipe wall (3111) and a second arcuate pipe wall (3112), the first arcuate pipe wall (3111) and the second arcuate pipe wall (3112) are arranged on opposite sides, the minimum radius of curvature of the first arcuate pipe wall (3111) is 6 mm, the minimum radius of curvature of the second arcuate pipe wall (3112) is 382 mm, and the bending directions of the first arcuate pipe wall (3111) and the second arcuate pipe wall (3112) face the same side. The second pipe portion (312) is provided with a third pipe wall and a fourth pipe wall, the third pipe wall and the fourth pipe wall are arranged on opposite sides, the third pipe wall includes a third arcuate pipe wall (3121) located on one side of the first pipe portion (311) and a first straight pipe wall (3123) located on one side of the third pipe portion (313), the minimum radius of curvature of the third arcuate pipe wall (3121) is 78 mm, the third arcuate pipe wall (3121) is displaced in a direction away from the fourth arcuate pipe wall, the maximum angular displacement of the third arcuate pipe wall (3121) is 11°, the dimension of the third arcuate pipe wall (3121) in the direction of the angular displacement is 50 mm, the fourth pipe wall includes a fourth arcuate pipe wall (3122) located on one side of the third pipe portion (313) and a second straight pipe wall (3124) located on one side of the first pipe portion 311, the minimum radius of curvature of the fourth arcuate pipe wall (3122) is 746 mm, the fourth arcuate pipe wall (3122) is displaced in a direction away from the third arcuate pipe wall, and the maximum angular displacement of the fourth arcuate pipe wall (3122) is 4°. The third pipe portion (313) is provided with a fifth arcuate pipe wall (3131) and a sixth arcuate pipe wall (3132), the minimum radius of curvature of the fifth arcuate pipe wall (3131) is 170 mm, the minimum radius of curvature of the sixth arcuate pipe wall (3132) is 73 mm, and the bending directions of the fifth arcuate pipe wall (3131) and the sixth arcuate pipe wall (3132) face the same side. The air conditioning system for a two-story vehicle according to claim 1.

3. The two upper transition air passages (31) are symmetrically arranged. The concave surfaces of the first arcuate pipe wall (3111) and the second arcuate pipe wall (3112) face the region between the two upper transition air passages (31), the concave surface of the third arcuate pipe wall (3121) faces the region between the two upper transition air passages (31), the fourth arcuate pipe wall (3122) is displaced outward of the two upper transition air passages (31) in the direction from one side portion of the third pipe portion (313) to one side portion of the first pipe portion (311), the fifth arcuate pipe wall (3131) and the sixth arcuate pipe wall (3132) are curved toward the inside of the two-story vehicle body, and the concave surfaces of the fifth arcuate pipe wall (3131) and the sixth arcuate pipe wall (3132) face the inside of the two-story vehicle body. The air conditioning system for a two-story vehicle according to claim 2.

4. The communication portion between the first pipe portion (311) and the upper floor air outlet has a first cross-sectional area, the communication portion between the second pipe portion (312) and the first pipe portion (311) has a second cross-sectional area, the communication portion between the third pipe portion (313) and the second pipe portion (312) has a third cross-sectional area, and the communication portion between the third pipe portion (313) and the upper floor air inlet has a fourth cross-sectional area. 55% to 70% of the first cross-sectional area is equal to the second cross-sectional area, 85% to 95% of the second cross-sectional area is equal to the third cross-sectional area, and 85% to 95% of the third cross-sectional area is equal to the fourth cross-sectional area. The air conditioning system for a two-story vehicle according to claim 2.

5. The upper floor main air passage (32) corresponds to the distribution of the upper seats of the two-story vehicle body, the upper floor main air passage (32) includes two upper floor side air passages corresponding to the seats on both sides of the upper floor, each upper floor side air passage is communicated with one of the upper floor transition air passages (31), and the two upper floor side air passages are provided with first upper floor air holes corresponding to the seats on both sides of the upper floor. The two upper-story side air passages include a first upper-story side air passage (331) and a second upper-story side air passage (332). The first upper-story side air passage (331) is located on one side where the staircase of the two-story vehicle body is located. The first upper air holes of the first upper-story side air passage (331) are staggered from the area where the staircase of the two-story vehicle body is located. The second upper air holes (81) are arranged between adjacent first upper air holes in the area of the second upper-story side air passage (332) on the opposite side of the staircase of the two-story vehicle body. The air conditioning system of the two-story vehicle according to claim 1.

6. The upper-story main air passage (32) further includes an upper-story front air passage (34) corresponding to the upper-story front seats. The upper-story front air passage (34) communicates with the two upper-story side air passages. The upper-story front air passage (34) is an annular air passage. The upper-story front air holes are arranged in the annular air passage. The upper-story front air holes are the first adjustable air holes (82). The air conditioning system of the two-story vehicle according to claim 5.

7. In the front-rear direction of the two-story vehicle body, the distance between the first upper air holes and the corresponding passenger face area of the seat is 180 mm to 250 mm. The air conditioning system of the two-story vehicle according to claim 5.

8. The air conditioning system further includes a driver's cab air passage (63) and an evaporator (61). The evaporator (61) communicates with the air conditioning box (1). The evaporator (61) is equipped with a driver's cab return air hole (62) facing the driver's cab. The evaporator (61) communicates with the driver's cab air passage (63). The driver's cab air passage (63) extends to the top of the driver's cab. The driver's cab air passage (63) is provided with a second adjustable air hole (72). The air conditioning system of the two-story vehicle according to claim 1.

9. The air conditioning system further includes two lower floor transition air passages (21) and two lower floor main air passages (2). The air conditioning unit box (1) has two lower floor air outlets. The two lower floor main air passages (2) are respectively connected to one of the lower floor air outlets through one of the lower floor transition air passages (21). The lower floor main air passage (2) is provided with a first lower floor air hole corresponding to the lower floor seat. The second lower floor air hole (74) corresponding to the door is located in the lower floor main air passage (2) located on one side of the vehicle door. The second lower floor air hole (74) includes strip-shaped air holes arranged in 1 to 3 rows. The air conditioning system for a two-story vehicle according to claim 1.

10. The air conditioning system further includes an upper floor return air passage (44) connected to the air conditioning unit box (1). The upper floor return air passage (44) has an upper floor return air hole (43) located in the rear bottom area of the upper floor of the two-story vehicle body. The air conditioning system for a two-story vehicle according to claim 1.

11. The air conditioning system further includes a lower floor return air passage (42) communicating with the upper floor return air passage (44). The lower floor return air passage (42) is provided with a lower floor return air hole (41). The lower floor return air hole (41) is located in the rear top area of the lower floor of the two-story vehicle body. The lower floor return air hole (41) is equipped with a hole switch device (40). The air conditioning system for a two-story vehicle according to claim 10.

12. A two-story vehicle, comprising a two-story vehicle body, and the two-story vehicle body is provided with the air conditioning system for a two-story vehicle according to any one of claims 1 to 11.

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