CN-121553384-B - Aircraft ground air conditioner based on precooling device and control method thereof

CN121553384BCN 121553384 BCN121553384 BCN 121553384BCN-121553384-B

Abstract

The disclosure provides an aircraft ground air conditioner based on a precooling device and a control method thereof, and relates to the technical field of airport equipment. The air-conditioning system comprises an air supply system and a temperature control system, wherein the temperature control system comprises a precooling device, a refrigerating device and a heating device, the precooling device is arranged between the air supply system and the refrigerating device, the precooling device is used for cooling gas conveyed by the air supply system for the first time, and the refrigerating device is used for cooling the gas cooled for the second time. According to the embodiment of the disclosure, the operation energy consumption of the aircraft ground air conditioner can be reduced, the efficiency and the flexibility are improved, and the aircraft ground air conditioner is supported to continuously and stably operate for a long time in a multi-stage temperature regulation mode.

Inventors

LIN MEINA
Dang Qinhao
SUN YINGHUI
LUO WEIJIANG

Assignees

深圳中集天达吉荣航空制冷有限公司
中国国际海运集装箱(集团)股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260122

Claims (12)

1. The air conditioner for the aircraft ground based on the precooling device is characterized by comprising an air supply system and a temperature control system, wherein the temperature control system comprises a precooling device and a refrigerating device, the precooling device is arranged between the air supply system and the refrigerating device and comprises a precooler and a first fan, the precooler is communicated with the first fan, the first fan is an axial flow fan, the air supply system comprises a second fan, and the second fan is a high-pressure vortex fan; the air supply system is used for conveying air to the temperature control system; The precooling device is used for sucking external normal-temperature air by using an axial flow fan, the external normal-temperature air and the pressurized and warmed fresh air sucked by the high-pressure vortex fan perform primary heat exchange in the precooler, and the pressurized fresh air heat is taken away by using a natural cold source and released into the environment, so that the gas conveyed by the air supply system is cooled for one time; the refrigerating device is used for carrying out secondary cooling on the gas subjected to primary cooling; The air conditioner further comprises a movable chassis and a box body arranged on the movable chassis, wherein the first fan is arranged at the top of the box body, and an air outlet of the first fan is vertically upwards; the driving mechanism is configured to control the water blocking structure to be opened in response to the starting of the first fan and to control the water blocking structure to be closed in response to the closing of the first fan; the refrigerating device comprises an evaporator and a condenser, the precooler is arranged at one end part in the box body, the condenser is adjacently arranged at two sides of the front end of the precooler, the evaporator is arranged in a fan housing, the fan housing is arranged on a power host of the aircraft ground air conditioner, and the power host is arranged at the other end part, opposite to the precooler, in the box body; the air conditioner comprises an evaporator, wherein an air duct corresponding to the evaporator is internally provided with a flow baffle, and the flow baffle is used for enabling air flow to be redistributed after flowing through the flow baffle, so that air flow organization on the windward side of the evaporator is relatively uniform.
2. The precooling apparatus-based aircraft ground air conditioner of claim 1, wherein the precooler comprises at least one air inlet and at least one air outlet, at least one air inlet being in communication with the air supply system and at least one air outlet being in communication with the refrigeration apparatus.
3. The aircraft ground air conditioner based on a pre-cooling device of claim 2, wherein a first temperature sensor is provided between the pre-cooling device and the cooling device to obtain a first temperature of the gas between the pre-cooling device and the cooling device.
4. The precooling apparatus-based aircraft ground air conditioner of claim 1, further comprising a power source, a power source system, a traveling system and a control system connected with the power source system, the traveling system, an air supply system and a temperature control system and used for controlling the operation of the systems, wherein the temperature control system further comprises a heating device used for heating the gas conveyed by the air supply system; The box comprises a frame and a panel, wherein the frame is fixed on a movable chassis, the panel is detachably connected with the frame, the movable chassis comprises a hollow structure, and the hollow structure and the box jointly form a space for bearing the power supply, the power supply system, the air supply system, the temperature control system and the control system.
5. The precooling apparatus-based aircraft ground air conditioner of claim 4, further comprising a fan housing, wherein a part of devices of the cooling apparatus and the heating apparatus are located in the fan housing, and wherein an outlet of the fan housing is provided with a second temperature sensor for detecting a second temperature of an external environment.
6. The precooling apparatus-based aircraft ground air conditioner of claim 5, wherein a fluid flow sensor is arranged between the precooling apparatus and the refrigerating apparatus, and a wind pressure sensor is arranged at an outlet of the fan housing.
7. The aircraft ground air conditioner based on a precooling apparatus as set forth in claim 1, wherein said refrigerating apparatus includes a compressor, said evaporator is respectively communicated with said condenser and said compressor, said condenser and said compressor are communicated, and said compressor is a variable frequency compressor, so that a refrigerating temperature of said refrigerating apparatus is adjustable.
8. The precooling apparatus-based aircraft ground air conditioner of claim 1, wherein the air supply system comprises a first filter and a fan frequency converter, the first filter being in communication with a second fan, the fan frequency converter being connected with the second fan for controlling the second fan.
9. A control method of an aircraft ground air conditioner based on a pre-cooling device, which is applied to the aircraft ground air conditioner based on a pre-cooling device as set forth in any one of claims 1 to 8, the method comprising: acquiring a target temperature, a target air quantity, a first temperature and a second temperature, wherein the first temperature is the temperature of gas between a precooling device and a refrigerating device, and the second temperature is the temperature of an external environment; controlling the air supply system to convey air to the temperature control system according to the target temperature and the target air quantity; When the first temperature is higher than the target temperature, controlling a precooling device and a refrigerating device in the temperature control system to start, so that the precooling device performs primary cooling on the gas conveyed by the air supply system, and controlling the refrigerating device to perform secondary cooling on the gas subjected to primary cooling based on the target temperature, the target air quantity, the first temperature and the second temperature.
10. The method for controlling an aircraft ground air conditioner based on a precooling apparatus as set forth in claim 9, further comprising: when the first temperature is lower than the target temperature, controlling a heating device in the temperature control system to start, and controlling the heating device to heat the gas conveyed by the air supply system based on the target temperature, the target air quantity, the first temperature and the second temperature.
11. The method for controlling an aircraft floor air conditioner based on a precooling apparatus according to claim 9, wherein controlling the cooling apparatus to perform secondary cooling on the primarily cooled gas based on the target temperature, the target air volume, the first temperature, and the second temperature comprises: Determining a first difference between the target temperature and the first temperature; Determining a first control parameter of the refrigeration device according to the first difference value; and adjusting the first control parameter of the refrigeration device according to the second temperature.
12. The method for controlling an aircraft ground air conditioner based on a precooling apparatus as set forth in claim 9, further comprising: Acquiring a pressure value of a refrigerating device; And adjusting a first control parameter of the refrigeration device in response to the pressure value not meeting a pressure protection threshold, wherein the pressure protection threshold is preset.

Description

Aircraft ground air conditioner based on precooling device and control method thereof Technical Field The disclosure relates to the technical field of airport equipment, in particular to an aircraft ground air conditioner based on a precooling device and a control method thereof. Background The environmental comfort of the aircraft and the heat dissipation requirements of electronic equipment and the like in the cabin of the aircraft during the stay on the ground are usually guaranteed by means of a ground air conditioning unit. In particular, in the scenes of overnight airlines, long-time overhaul or high-temperature and high-humidity environments, the ground air conditioner is required to continuously and stably run, and high requirements are provided for the reliability, energy efficiency and running and maintenance cost of the air conditioning system. In the related art, in order to realize cooling of the supply air, a mode of serial operation of two-stage refrigeration devices is generally adopted. The two-stage refrigerating system has the advantages that the temperature can be reduced by the mode, a large amount of electric energy is consumed by the two refrigerating devices, the whole energy consumption is high, the operation economy is poor, the two-stage refrigerating system is complex in structure, the control logic is complex, the equipment failure probability and the maintenance difficulty are increased, and in addition, when the environment temperature is high, the load of the first-stage refrigerating device is high, the efficiency is reduced, and the whole cooling capacity and the system stability are affected. Therefore, how to reduce the energy consumption of the system, simplify the structure and improve the operation reliability on the premise of ensuring the refrigeration effect becomes a problem to be solved urgently at present. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of Invention The invention provides an aircraft ground air conditioner based on a precooling device and a control method thereof, which can reduce the running energy consumption of the aircraft ground air conditioner, improve the efficiency and the flexibility, and support the continuous and stable running of the aircraft ground air conditioner based on the precooling device for a long time. Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure. According to one aspect of the disclosure, an aircraft ground air conditioner based on a precooling device is provided, and the aircraft ground air conditioner comprises an air supply system and a temperature control system, wherein the temperature control system comprises a precooling device, a refrigerating device and a heating device, the air supply system is used for conveying air to the temperature control system, the precooling device is arranged between the air supply system and the refrigerating device, the precooling device is used for cooling the air conveyed by the temperature control system for the first time, and the refrigerating device is used for cooling the air cooled for the first time for the second time. In some embodiments, the precooling device comprises a precooler and a first fan, the precooler is communicated with the first fan, the first fan is an axial flow fan, the precooler comprises at least one air inlet and at least one air outlet, the at least one air inlet is communicated with the air supply system, the at least one air outlet is communicated with the refrigerating device, wherein the axial flow fan is used for introducing a natural cold source of an external environment into the precooler, so that the natural cold source exchanges heat with gas conveyed to the refrigerating device by the air supply system when flowing through the precooler, and discharges air after absorbing heat to the external environment. In some embodiments, a first temperature sensor is disposed between the pre-cooling device and the cooling device to obtain a first temperature of the gas between the pre-cooling device and the cooling device. In some embodiments, the system further comprises a power supply, a power supply system, a running system and a control system connected with the power supply system, the running system, the air supply system and the temperature control system and used for controlling the operation of each system, wherein the temperature control system further comprises a heating device used for heating air conveyed by the air supply system, the system further comprises a movable chassis and a box body arranged on the movable chassis, the box body comprises a frame and a panel, the frame is fix