Air conditioning system suitable for multi-zone control of light bus

Abstract

An air conditioning system suitable for light bus multi-zone control comprises a compressor, the compressor is connected with an HVAC, an overhead evaporator and a condenser, and the condenser is connected with the HVAC and the overhead evaporator through system pipelines. A box type radiator is arranged on the system pipeline, and the box type radiator and the HVAC are further connected with the engine. The condenser, the compressor, the HVAC3, the overhead evaporator and the box type radiator are all connected with the control panel; the HVAC is located in a driver area, and the overhead evaporator, the condenser and the box type radiator are all located in a passenger area. Air conditioners in the driver area and the passenger area can be respectively controlled by adopting a single panel. The requirements for refrigeration, heating, defrosting and dehumidification of an air conditioner in the driver area can be met through a single panel, the requirements for refrigeration, heating and dehumidification of the passenger area can be met, control over different temperatures of the driver area and the passenger area can be achieved, and the comfort of passengers is improved.

Description

Technical Field

[0001] The utility model belongs to the field of new energy vehicle battery management, and specifically relates to an air-conditioning system suitable for multi-zone control of light buses. Background Art

[0002] Against the backdrop of China's rapid economic development and advancing urbanization, the light bus market is experiencing robust growth. In recent years, with the continued rise of urbanization in China and the increasingly diverse travel needs of urban and rural residents, light buses, as convenient and flexible means of transportation, have shown broad application prospects in public transportation, tourism, business reception, and other fields. In response to this growing light bus market, we collaborated with OEMs to develop an air conditioning system suitable for light buses, meeting the vehicle's cooling, heating, and ventilation requirements and enhancing overall vehicle comfort.

[0003] At present, the technical solutions adopted are:

[0004] (1) Two panels are used for operation, one in the driver area and the other in the passenger area;

[0005] (2) The air conditioner is manual and needs to be adjusted manually according to demand.

[0006] The existing solution has the following disadvantages:

[0007] (1) The driver area and the passenger area are controlled by different panels, and the passenger area panel is located in the passenger area and cannot be operated by the driver. The two panels result in high costs.

[0008] (2) The air conditioner is manual and the temperature control cannot be set. The air conditioner cannot be shut down when the temperature reaches the desired level, resulting in poor overall comfort and high energy consumption for the entire vehicle. Utility Model Content

[0009] The technical problem to be solved by the utility model is: how to solve the problem of separate control of different panels and provide an air-conditioning system suitable for multi-zone control of light buses.

[0010] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0011] An air conditioning system suitable for multi-zone control in a light bus includes a compressor, the compressor being connected to an HVAC system, an overhead evaporator, and a condenser, respectively. The condenser is further connected to the HVAC system and the overhead evaporator via system piping. A cassette radiator is provided on the system piping, and the cassette radiator and the HVAC system are also connected to the engine.

[0012] And the condenser, compressor, HVAC, overhead evaporator and box radiator are all connected to the control panel;

[0013] The HVAC is located in the driver's area, with the overhead evaporator, condenser, and cassette radiator located in the passenger area.

[0014] An outdoor temperature sensor, a driver area return air temperature sensor and a driver area humidity sensor are arranged in the driver area of the vehicle, a passenger area return air temperature sensor and a passenger area humidity sensor are arranged at the passenger area return air outlet, and a seat return air temperature sensor is arranged under the seat; the outdoor temperature sensor, driver area return air temperature, driver area humidity sensor, passenger area return air temperature sensor, passenger area humidity sensor and seat return air temperature sensor are all connected to the control panel.

[0015] The control panel includes the maximum defrost mode button, HVAC mode adjustment button, rearview mirror heating button, box radiator button, temperature increase adjustment button, temperature reduction adjustment button, fresh air button, power on / off button, dehumidification button, fuel heater button, compressor switch and HVAC air volume adjustment button, automatic mode and overhead evaporator air volume adjustment button and display screen.

[0016] Compared with existing technologies, the present invention offers the following advantages: This multi-zone air conditioning system for light buses utilizes a single panel to separately control the air conditioning in the driver and passenger zones. This single panel allows for separate control of the driver's zone's cooling, heating, defrosting, and dehumidification requirements, while also enabling cooling, heating, and dehumidification requirements in the passenger zone. This allows for different temperature controls in the driver and passenger zones, enhancing passenger comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the product structure diagram of this utility model;

[0018] Figure 2 This is the panel structure diagram. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] like Figure 1 As shown, a multi-zone air conditioning system suitable for light buses includes a compressor 2, which is connected to an HVAC system 3, an overhead evaporator 4, and a condenser 1. The condenser 1 is further connected to the HVAC system 3 and the overhead evaporator 4 via system piping 7. A cassette radiator 5 is provided on the system piping 7. The cassette radiator 5 and the HVAC system 3 are also connected to the engine.

[0022] The condenser 1 , compressor 2 , HVAC 3 , overhead evaporator 4 and box radiator 5 are all connected to the control panel 6 .

[0023] The HVAC 3 is located in the driver's area, and the overhead evaporator 4, condenser 1 and box radiator 5 are all located in the passenger area.

[0024] Furthermore, an outdoor temperature sensor, a driver area return air temperature and a driver area humidity sensor are arranged in the driver area of the vehicle, a passenger area return air temperature sensor and a passenger area humidity sensor are arranged at the passenger area return air outlet, and a seat return air temperature sensor is arranged under the seat; the outdoor temperature sensor, driver area return air temperature, driver area humidity sensor, passenger area return air temperature sensor, passenger area humidity sensor and seat return air temperature sensor are all connected to the control panel 6.

[0025] Furthermore, if Figure 2 As shown, control panel 6 includes a maximum defrost mode button 61, HVAC mode adjustment button 62, rearview mirror heating button 63, cassette radiator button 64, temperature increase adjustment button 65, temperature decrease adjustment button 66, fresh air button 67, power on / off button 68, dehumidification button 69, fuel heater button 70, compressor on / off and HVAC air volume adjustment button 71, automatic mode and overhead evaporator air volume adjustment button 72, and display screen 73. Thus, the air conditioning in both the driver and passenger areas is controlled using the same control panel 6, allowing passengers to select the corresponding function based on their actual needs.

[0026] The working principle of this utility model is:

[0027] Cooling mode:

[0028] During cooling, this product uses a single compressor 2 to simultaneously supply cooling to both the HVAC unit 3 and the overhead evaporator 4, meeting the cooling needs of both the driver and passenger areas. Compressed by compressor 2, the refrigerant becomes a high-temperature, high-pressure gas that enters condenser 1. After cooling in condenser 1, the refrigerant is split into two by system piping 7, entering the HVAC unit 3 and overhead evaporator 4, respectively. After throttling through expansion valves within these two locations, the refrigerant absorbs heat before returning to compressor 2, where it is compressed again.

[0029] The driver's area and passenger area are cooled by the cold air blown out by HVAC3 and the overhead evaporator 4. The driver sets the temperature on the control panel 6. The return air temperature sensors arranged at the return air outlets of the driver's area and the passenger's area transmit the temperature to the display screen of the control panel 6 respectively. When the driver's area and the passenger's area reach the set temperature at the same time, the compressor 2 is disconnected to reduce the energy consumption of the whole vehicle. When the return air temperature sensor temperature is detected to be ≥ the set temperature + 2°C, the compressor 2 is restarted and the cooling is resumed. It should be noted that the disconnection and restart of the compressor 2 can be done manually or automatically by the built-in controller of the control panel 6. The built-in controller performs automatic start and stop technology according to the set parameters. This is a prior art and does not fall within the scope of protection of the present utility model.

[0030] Heating mode:

[0031] This product uses engine coolant to increase the temperature during heating, and introduces the engine coolant into the HVAC3 and the box radiator 5 to meet the heating needs of the driver area and the passenger area.

[0032] The driver and passenger areas can be heated by hot air blown out by HVAC3 and cassette radiator 5. The driver sets the temperature on control panel 6. Return air temperature sensors arranged at the seats in the driver and passenger areas transmit the temperature to the display screen of the control panel. When the driver and passenger areas reach the set temperature, HVAC3 and cassette radiator 5 stop outputting heat. When the return air temperature sensor detects that the temperature is ≥ the set temperature -2°C, HVAC3 and cassette radiator 5 restart and resume heating. It should be noted that the disconnection and restart of HVAC3 and cassette radiator 5 can be done manually or automatically by the built-in controller of control panel 6. The built-in controller performs automatic start and stop technology according to the set parameters. This is prior art and does not fall within the scope of protection of the present utility model.

[0033] Ventilation mode:

[0034] When the product is ventilating, the compressor 2 is not allowed to start, and the HVAC 3 and the top evaporator 4 open the windshield to blow natural wind.

[0035] Automatic control mode:

[0036] When the automatic control mode is turned on, the mode selection is determined based on the outdoor temperature, the return air temperature in the passenger area and the set temperature.

[0037] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) ≥ 25°C, it is determined to be in cooling mode;

[0038] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 25°C and greater than 7°C, it is determined to be in ventilation mode;

[0039] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) ≤ 7°C, it is determined to be heating mode;

[0040] After the mode determination is completed, HVAC operates according to the 3 wind speed settings, and the overhead evaporator windshield is automatically adjusted.

[0041] In cooling mode:

[0042] The top evaporator windshield is as follows:

[0043] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 25℃ and greater than or equal to 20℃, the windshield is 1;

[0044] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 30℃ and ≥ 25℃, the windshield is 2;

[0045] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 35℃ and greater than or equal to 30℃, the windshield is 3;

[0046] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 40℃ and greater than or equal to 35℃, the windshield is set to 4;

[0047] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 50℃ and greater than or equal to 40℃, the windshield is 5;

[0048] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) is less than 60℃ and ≥50℃, the windshield is 6;

[0049] When the outdoor temperature + 3* (passenger area return air temperature - set temperature) ≥ 60℃, the windshield is 7;

[0050] The windshield of the box radiator is 0.

[0051] In ventilation mode:

[0052] The top evaporator windshield has 3 wind levels;

[0053] The windshield of the box radiator is 0.

[0054] In heating mode:

[0055] The top evaporator windshield is 0;

[0056] Cassette radiator windshield according to:

[0057] When the return air temperature sensor temperature at the seat is set to -1°C, high speed;

[0058] When the return air temperature sensor temperature at the seat is set to a low setting and the set temperature is greater than -1°C and less than 0°C;

[0059] Seat return air temperature sensor temperature - turns off when the set temperature is greater than 0℃.

[0060] The beneficial effects of the utility model are:

[0061] (1) Multi-zone controlled air conditioning system suitable for light buses with a length of 5.9 meters or less, meeting the air conditioning needs of the entire vehicle.

[0062] (2) A single panel is used to control the air conditioning in the driver and passenger areas. The driver can flexibly adjust the air conditioning according to the different needs of the driver and passenger areas, which is convenient for the driver to operate and reduces the cost of the single panel.

[0063] (3) The air conditioner can be automatically controlled. When cooling, the air outlet speed of the air conditioner can be adjusted according to the set temperature of the driver area and passenger area, and the start and stop of the compressor can be controlled, thereby improving the comfort of the entire vehicle and reducing the energy consumption of the entire vehicle.

[0064] (4) The air conditioner can be automatically controlled. When heating, the air conditioner air outlet speed and radiator start, stop and downshift can be adjusted according to the set temperature of the driver area and passenger area, thereby improving the comfort of the whole vehicle and reducing the energy consumption of the whole vehicle.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. An air conditioning system suitable for multi-zone control of light passenger vehicles, characterized by: The system comprises a compressor (2), wherein the compressor (2) is respectively connected to an HVAC (3), an overhead evaporator (4) and a condenser (1), wherein the condenser (1) is further respectively connected to the HVAC (3) and the overhead evaporator (4) via a system pipeline (7); a box-type radiator (5) is provided on the system pipeline (7), and the box-type radiator (5) and the HVAC (3) are also connected to an engine; The condenser (1), compressor (2), HVAC (3), overhead evaporator (4) and box radiator (5) are all connected to the control panel (6); The HVAC (3) is located in the driver's area, and the overhead evaporator (4), condenser (1) and cassette radiator (5) are all located in the passenger area.

2. The multi-zone air conditioning system for light buses according to claim 1, characterized in that: An outdoor temperature sensor, a driver area return air temperature sensor, and a driver area humidity sensor are arranged in the driver area of the vehicle, a passenger area return air temperature sensor and a passenger area humidity sensor are arranged at the passenger area return air outlet, and a seat return air temperature sensor is arranged under the seat; the outdoor temperature sensor, the driver area return air temperature sensor, the driver area humidity sensor, the passenger area return air temperature sensor, the passenger area humidity sensor, and the seat return air temperature sensor are all connected to the control panel (6).

3. The multi-zone air conditioning system for light passenger vehicles according to claim 1, characterized in that: The control panel (6) includes a maximum defrost mode button (61), an HVAC mode adjustment button (62), a rearview mirror heating button (63), a box radiator button (64), a temperature increase adjustment button (65), a temperature decrease adjustment button (66), a fresh air button (67), an on / off button (68), a dehumidification button (69), a fuel heater button (70), a compressor switch and HVAC air volume adjustment button (71), an automatic mode and overhead evaporator air volume adjustment button (72) and a display screen (73).

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