A zoned air conditioning system and control strategy for shuttle buses

Abstract

The present invention discloses a zoned air conditioning system and control strategy for a shuttle bus. The air conditioning evaporator, compressor and condenser of the driving area together form a split air conditioning system for the driving area. The front top evaporator and the split air conditioning system for the driving area form a driving area air conditioning system. The front top air conditioning system and the rear top air conditioning system form a passenger area air conditioning system. The front top evaporator and the front top air conditioning system share a compressor. The present invention not only solves the space limitation but also increases the cooling capacity of the driving area by sharing the same compressor with the passenger area.

Description

Technical field:

[0001] The invention relates to a zoned air conditioning system for a shuttle bus and a control strategy. Background technology:

[0002] With the development of new energy vehicles, pure electric vehicles have occupied a large part of the market. As a result, shuttle buses are also being updated and replaced. Pure electric shuttle buses have begun to shuttle between various airports. Since airport shuttle buses are special equipment, they have an extra-long and extra-wide body and extra-large standing space in the passenger area, as well as a space that separates the driving area from the passenger area. The problem that follows is the problem of the air conditioning system in the driving area and the passenger area. Due to the large space, conventional solutions can no longer meet the normal cooling needs of the vehicle, especially to meet the cooling needs in the high temperature environment in Saudi Arabia. Summary of the invention:

[0003] The present invention provides a shuttle bus zoned air conditioning system and control strategy in order to solve the problems existing in the above-mentioned prior art.

[0004] The technical solutions adopted in the present invention are:

[0005] A shuttle bus zone air conditioning system includes a front overhead air conditioner, a rear overhead air conditioner, a front overhead evaporator, a four-in-one controller, a passenger area air conditioning panel, a driving area air conditioning panel, a driving area air conditioning low-voltage distribution box, a driving area air conditioning high-voltage distribution box, a driving area air conditioning evaporator, a compressor and a condenser. The front overhead air conditioner is connected to the rear overhead air conditioner through a connecting line, the front overhead air conditioner is connected to the front overhead evaporator through a refrigerant pipe, the front overhead air conditioner is connected to the passenger area air conditioning panel and the driving area air conditioning panel through a connecting line, and the front overhead air conditioner is connected to the four-in-one controller. The controllers are connected by connecting wires, the driving area air conditioning panel is connected to the driving area air conditioning low-voltage distribution box, and the driving area air conditioning low-voltage distribution box is connected to the condenser and the driving area air conditioning evaporator through control wires; the four-in-one controller is connected to the driving area air conditioning high-voltage distribution box through connecting wires, and the driving area air conditioning high-voltage distribution box is connected to the compressor and the driving area air conditioning evaporator through two connecting wires, and the compressor is respectively connected to the condenser and the driving area air conditioning evaporator through two refrigerant pipes, and the condenser and the driving area air conditioning evaporator are connected through a refrigerant pipe;

[0006] The driving area air-conditioning evaporator, compressor and condenser together constitute the driving area split air-conditioning, the front top evaporator and the driving area split air-conditioning constitute the driving area air-conditioning system, the front top air-conditioning and the rear top air-conditioning constitute the passenger area air-conditioning system; the front top evaporator and the front top air-conditioning share a compressor.

[0007] Furthermore, the total cooling capacity of the passenger area air conditioning system is 40kw, and the maximum evaporative air volume is 9600m 3 / h.

[0008] The present invention also discloses a control strategy for a shuttle bus zone air conditioning system, including:

[0009] 1) When the driving area air conditioning panel turns on the ventilation function, the driving area air conditioning panel controls the driving area air conditioning evaporator and the front roof evaporator in the driving area air conditioning system through the communication harness to work simultaneously, and adjusts the wind speed through the driving area air conditioning panel;

[0010] 2) While the driving area air-conditioning panel controls the ventilation of the driving area air-conditioning evaporator and the front roof evaporator, when the driving area air-conditioning panel turns on the cooling mode, the driving area air-conditioning panel and the passenger area air-conditioning panel will request the VCU in the vehicle to close the high-voltage contactor inside the four-in-one controller, and supply power to the front roof air-conditioning and the driving area split air-conditioning, the compressor works, and the air-conditioning starts to cool. At this time, the front roof evaporator and the front roof air-conditioning share the same compressor, and the passenger area air-conditioning evaporator connected to the rear roof air-conditioning in the passenger area air-conditioning system does not work.

[0011] The scheme of the present invention is simple and the principle is clear. By sharing the compressor with the passenger area, it not only does not occupy the space of the whole vehicle, but also cleverly increases the cooling capacity and evaporation air volume of the driving area. At the same time, when the air conditioner is working, the cooling effect of the driving area is qualitatively improved when there is wind at the bottom and the top at the same time. The beneficial effects produced thereby are:

[0012] 1) The present invention not only solves the space limitation but also increases the cooling capacity of the driving area by sharing the same compressor with the passenger area;

[0013] 2) The air conditioning in the driving area and the air conditioning in the passenger area share the same 485 network communication, so that the air conditioning status in the driving area and the information in the passenger area can be interconnected, solving the linkage problem of the air conditioning. Description of the drawings:

[0014] Figure 1 It is the wiring principle diagram of the present invention.

[0015] Figure 2 The figure is a schematic diagram of the installation of the present invention on a vehicle body.

[0016] Figure 3 This is the architecture diagram of the air conditioner's internal communication network. Specific implementation method:

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figures 1 to 3The present invention provides a zoned air conditioning system for a shuttle bus, comprising a front roof air conditioner 1, a rear roof air conditioner 4, a front roof evaporator 7, a four-in-one controller 10, a passenger area air conditioning panel 11, a driving area air conditioning panel 12, a driving area air conditioning low-voltage distribution box 13, a driving area air conditioning high-voltage distribution box 16, a driving area air conditioning evaporator 22, a compressor 23 and a condenser 24.

[0019] The front overhead air conditioner 1 is connected to the rear overhead air conditioner 4 via a high-voltage connection line 2 and a low-voltage connection line 3, and the front overhead air conditioner 1 is connected to the front top evaporator 7 via two refrigerant pipes 5 (a high-voltage refrigerant pipe and a low-voltage refrigerant pipe). The front overhead air conditioner 1 is connected to the passenger area air conditioning panel 11 and the driver area air conditioning panel 12 via a low-voltage connection line 3, and the front overhead air conditioner 1 is connected to the four-in-one controller 10 via a high-voltage connection line 2.

[0020] The driving area air conditioning panel 12 is connected to the driving area air conditioning low-voltage distribution box 13 , and the driving area air conditioning low-voltage distribution box 13 is connected to the condenser 24 and the driving area air conditioning evaporator 22 via the control line 17 .

[0021] The four-in-one controller 10 is connected to the driving area air conditioning high-voltage distribution box 16 through a high-voltage connecting line 2. The driving area air conditioning high-voltage distribution box 16 is connected to the compressor 23 and the driving area air conditioning evaporator 22 through two high-voltage connecting lines 2 respectively. The compressor 23 is connected to the condenser 24 and the driving area air conditioning evaporator 22 through a refrigerant pipe, and the condenser 24 and the driving area air conditioning evaporator 22 are connected through a refrigerant pipe.

[0022] The driving area air conditioning evaporator 22, compressor 23 and condenser 24 in the present invention together constitute a driving area split air conditioner, the front top evaporator 7 and the driving area split air conditioner constitute a driving area air conditioning system, and the front top air conditioner 1 and the rear top air conditioner 4 constitute a passenger area air conditioning system.

[0023] The front top evaporator 7 and the front top air conditioner 1 share a compressor 23, and the rear top air conditioner 4 in the passenger area air conditioning system uses a separate compressor (the compressor is not shown in the figure).

[0024] The control logic of the zoned air conditioning system of the present invention is:

[0025] 1) When the driving area air conditioning panel 12 turns on the ventilation function, the driving area air conditioning panel 12 controls the driving area air conditioning evaporator 22 and the front roof evaporator 7 in the driving area air conditioning system through the 485 communication harness to work simultaneously, and adjusts the wind speed through the driving area air conditioning panel 12;

[0026] 2) While the driving area air-conditioning panel 12 controls the ventilation of the driving area air-conditioning evaporator 22 and the front roof evaporator 7, when the driving area air-conditioning panel 12 turns on the cooling mode, the driving area air-conditioning panel 12 and the passenger area air-conditioning panel 11 will request the VCU in the vehicle to close the high-voltage contactor inside the four-in-one controller 10, and supply power to the front roof air conditioner 1 and the driving area split air conditioner. The compressor 23 works and the air conditioner starts to cool. At this time, the front roof evaporator 7 and the front roof air conditioner 1 share the same compressor 23, and the passenger area air-conditioning evaporator connected to the rear roof air conditioner 4 in the passenger area air-conditioning system does not work.

[0027] The present invention realizes the function of starting and stopping the air conditioning evaporator 22 of the driving area and the front top evaporator 7 at the same time. This function can meet the cooling capacity of 3kw+4kw in the driving area, totaling 7kw, and the evaporation air volume is 1200m3 / h. It greatly meets the use in Saudi Arabia and high-temperature areas in China. The whole vehicle is provided with 5 air outlets on the instrument panel of the driving area and 10 air outlets on the top of the driving area, which can disperse the cold air well to any space in the driving area, greatly improving the cooling effect of the driving area. The front top evaporator 7 does not work in the heating mode.

[0028] The total cooling capacity of the air conditioner in the passenger area is 20kw+20kw, with a total actual cooling capacity of 40kw, and the evaporating air volume is as high as 9600m3 / h; even if the driving area and the passenger area share one compressor, the two functions complement each other and can effectively meet the cooling effect of the driving area and the passenger area.

[0029] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A shuttle bus zone air conditioning system, characterized by: The invention comprises a front overhead air conditioner (1), a rear overhead air conditioner (4), a front overhead evaporator (7), a four-in-one controller (10), a passenger area air conditioning panel (11), a driving area air conditioning panel (12), a driving area air conditioning low-voltage distribution box (13), a driving area air conditioning high-voltage distribution box (16), a driving area air conditioning evaporator (22), a compressor (23) and a condenser (24), wherein the front overhead air conditioner (1) and the rear overhead air conditioner (4) are connected via a connecting line, the front overhead air conditioner (1) and the front overhead evaporator (7) are connected via a refrigerant pipe, the front overhead air conditioner (1) is connected to the passenger area air conditioning panel (11) and the driving area air conditioning panel (12) via connecting lines, and the front overhead air conditioner (1) and the four-in-one controller (24) are connected via connecting lines. 10) are connected by connecting wires, the driving area air conditioning panel (12) is connected to the driving area air conditioning low-voltage distribution box (13), and the driving area air conditioning low-voltage distribution box (13) is connected to the condenser (24) and the driving area air conditioning evaporator (22) via control wires; the four-in-one controller (10) is connected to the driving area air conditioning high-voltage distribution box (16) via connecting wires, and the driving area air conditioning high-voltage distribution box (16) is connected to the compressor (23) and the driving area air conditioning evaporator (22) via two connecting wires, and the compressor (23) is connected to the condenser (24) and the driving area air conditioning evaporator (22) respectively via two refrigerant pipes, and the condenser (24) and the driving area air conditioning evaporator (22) are connected via a refrigerant pipe; The driving area air conditioning evaporator (22), the compressor (23) and the condenser (24) together form a driving area split air conditioner, the front top evaporator (7) and the driving area split air conditioner form a driving area air conditioning system, and the front top air conditioner (1) and the rear top air conditioner (4) form a passenger area air conditioning system; the front top evaporator (7) and the front top air conditioner (1) share a compressor (23); The front overhead evaporator and the front overhead air conditioner share a compressor, and the rear overhead air conditioner in the passenger area air conditioning system uses a separate compressor; 1) When the driving area air conditioning panel (12) turns on the ventilation function, the driving area air conditioning panel (12) controls the driving area air conditioning evaporator (22) and the front roof evaporator (7) in the driving area air conditioning system through the communication harness to operate simultaneously, and adjusts the wind speed through the driving area air conditioning panel (12); 2) While the driving area air conditioning panel (12) controls the ventilation of the driving area air conditioning evaporator (22) and the front top evaporator (7), when the driving area air conditioning panel (12) turns on the cooling mode, the driving area air conditioning panel (12) and the passenger area air conditioning panel (11) will request the VCU in the vehicle to close the high-voltage contactor inside the four-in-one controller (10), and supply power to the front top air conditioner (1) and the driving area split air conditioner, the compressor (23) works, and the air conditioner starts cooling. At this time, the front top evaporator (7) and the front top air conditioner (1) share the same compressor (23), and the passenger area air conditioning evaporator connected to the rear top air conditioner (4) in the passenger area air conditioning system does not work.

2. The shuttle bus zone air conditioning system according to claim 1, characterized in that: The total cooling capacity of the passenger area air conditioning system is 40kw, and the maximum evaporative air volume is 9600m 3 / h.

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