阅读说明：本技术 一种货运飞机的环境控制方法、装置和存储介质 (Environment control method and device for freight aircraft and storage medium ) 是由 梁尤轩 赵桓 沈军 陈永杰 于 2020-12-21 设计创作，主要内容包括：本发明提供一种货运飞机的环境控制方法、装置和存储介质,所述方法包括：所述货运飞机包括环控空调包和辅助冷却系统,所述环控空调包与所述辅助冷却系统的热交换器之间设有环控风道,能够将所述环控空调包输出的冷空气通入所述热交换器,所述控制方法,包括：判断所述辅助冷却系统的设定目标温度是否大于等于第一预设温度阈值；若所述目标设定温度大于等于所述第一预设温度阈值,则开启所述辅助冷却系统,若所述设定目标温度小于所述第一预设温度阈值,则不开启所述辅助冷却系统。本发明提供的方案能够满足用户的低温保鲜要求。(The invention provides an environment control method, an environment control device and a storage medium of a cargo aircraft, wherein the method comprises the following steps: the freight aircraft comprises an environment-friendly air-conditioning pack and an auxiliary cooling system, an environment-friendly air duct is arranged between the environment-friendly air-conditioning pack and a heat exchanger of the auxiliary cooling system, and cold air output by the environment-friendly air-conditioning pack can be introduced into the heat exchanger, and the control method comprises the following steps: judging whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold value or not; and if the target set temperature is greater than or equal to the first preset temperature threshold, starting the auxiliary cooling system, and if the set target temperature is less than the first preset temperature threshold, not starting the auxiliary cooling system. The scheme provided by the invention can meet the low-temperature preservation requirement of users.)

1. An environmental control method for a cargo aircraft, wherein the cargo aircraft comprises an environmental control air conditioning pack and an auxiliary cooling system, an environmental control air duct is arranged between the environmental control air conditioning pack and a heat exchanger of the auxiliary cooling system, and cold air output by the environmental control air conditioning pack can be introduced into the heat exchanger, and the control method comprises the following steps:

judging whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold value or not;

and if the target set temperature is greater than or equal to the first preset temperature threshold, starting the auxiliary cooling system, and if the set target temperature is less than the first preset temperature threshold, not starting the auxiliary cooling system.

2. The method of claim 1, further comprising:

and when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight height of the freight aircraft.

3. The method of claim 2, wherein controlling whether the chilled air output by the climate control pack is directed into the heat exchanger based on an indoor temperature, an outdoor temperature, a condensing temperature of an auxiliary cooling system, and/or a flight altitude of the cargo aircraft comprises:

when the freight airplane does not take off, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system; and/or the presence of a gas in the gas,

and after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

4. The method of claim 3,

when the freight airplane does not take off, whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not is controlled according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system, and the method comprises the following steps:

if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger;

if the indoor temperature is judged to be higher than a fourth preset temperature threshold value and the condensing temperature is judged to be higher than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger;

and/or the presence of a gas in the gas,

after the freight airplane takes off, whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger is controlled according to the indoor temperature and the flying height of the freight airplane, and the method comprises the following steps:

if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling a cold air part output by the environment-controlled air conditioning pack to be introduced into the heat exchanger;

and if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger.

5. An environmental control apparatus for a cargo aircraft, the cargo aircraft including an environmental control air conditioning pack and an auxiliary cooling system, an environmental control air duct being provided between the environmental control air conditioning pack and a heat exchanger of the auxiliary cooling system, the environmental control air conditioning pack being capable of passing cold air output by the environmental control air conditioning pack into the heat exchanger, the apparatus comprising:

the judging unit is used for judging whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold value or not;

and the control unit is used for starting the auxiliary cooling system if the judging unit judges that the target set temperature is greater than or equal to the first preset temperature threshold value, and not starting the auxiliary cooling system if the judging unit judges that the set target temperature is less than the first preset temperature threshold value.

6. The apparatus of claim 5, wherein the control unit is further configured to:

and when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight height of the freight aircraft.

7. The apparatus of claim 6, wherein the control unit controls whether the cold air output by the climate control pack is introduced into the heat exchanger according to an indoor temperature, an outdoor temperature, a condensing temperature of an auxiliary cooling system, and/or a flying height of the cargo aircraft, and comprises:

when the freight airplane does not take off, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system; and/or the presence of a gas in the gas,

and after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

8. The apparatus of claim 7,

the control unit controls whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system when the freight aircraft does not take off, and comprises:

if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger;

if the indoor temperature is judged to be higher than a fourth preset temperature threshold value and the condensing temperature is judged to be higher than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger;

and/or the presence of a gas in the gas,

the control unit controls whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight aircraft after the freight aircraft takes off, and comprises:

if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling a cold air part output by the environment-controlled air conditioning pack to be introduced into the heat exchanger;

and if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger.

9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.

Technical Field

The invention relates to the field of control, in particular to an environment control method, an environment control device and a storage medium for a freight aircraft.

Background

Cargo aircraft generally adopt the container mode to transport the goods, to the fresh-keeping class goods that require the temperature to be less than 10 degrees, because cargo aircraft environmental control air-conditioning package is to the environmental temperature regulation limit (generally more than 16 degrees), adopt the container of taking cold storage function certainly, but this type of container need be taken the battery certainly and need charge, and is bulky, increases the cost of transportation, and the economic nature is general. The auxiliary cooling system of the aircraft can adopt an evaporative compression type system, but is limited by the size of the aircraft, and the ram air pipeline and the air quantity are limited, so that the condensation temperature is too high, and the efficiency of the system is reduced.

Disclosure of Invention

The invention mainly aims to overcome the defects of the prior art and provide an environment control method, an environment control device and a storage medium of a freight aircraft, so as to solve the problem that the environment temperature of an environment control air conditioning pack of the freight aircraft is limited in the prior art.

The invention provides an environment control method of a freight aircraft, wherein the freight aircraft comprises an environment-controlled air conditioning pack and an auxiliary cooling system, an environment-controlled air duct is arranged between the environment-controlled air conditioning pack and a heat exchanger of the auxiliary cooling system, and cold air output by the environment-controlled air conditioning pack can be introduced into the heat exchanger, and the control method comprises the following steps: judging whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold value or not; and if the target set temperature is greater than or equal to the first preset temperature threshold, starting the auxiliary cooling system, and if the set target temperature is less than the first preset temperature threshold, not starting the auxiliary cooling system.

Optionally, the method further comprises: and when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight height of the freight aircraft.

Optionally, controlling whether the cold air output by the environmental control air conditioning pack is introduced into the heat exchanger according to the indoor temperature, the outdoor temperature, the condensation temperature of an auxiliary cooling system and/or the flight altitude of the cargo airplane comprises: when the freight airplane does not take off, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system; and/or after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

Optionally, when the cargo airplane does not take off, whether the cold air output by the environmental control air conditioning pack is introduced into the heat exchanger or not is controlled according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system, and the method comprises the following steps: if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger; if the indoor temperature is judged to be higher than a fourth preset temperature threshold value and the condensing temperature is judged to be higher than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger; and/or after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane, wherein the method comprises the following steps: if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling a cold air part output by the environment-controlled air conditioning pack to be introduced into the heat exchanger; and if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger.

In another aspect, the present invention provides an environmental control apparatus for a cargo aircraft, where the cargo aircraft includes an environmental control air conditioning pack and an auxiliary cooling system, an environmental control air duct is provided between the environmental control air conditioning pack and a heat exchanger of the auxiliary cooling system, and cold air output by the environmental control air conditioning pack can be introduced into the heat exchanger, and the apparatus includes: the judging unit is used for judging whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold value or not; and the control unit is used for starting the auxiliary cooling system if the judging unit judges that the target set temperature is greater than or equal to the first preset temperature threshold value, and not starting the auxiliary cooling system if the judging unit judges that the set target temperature is less than the first preset temperature threshold value.

Optionally, the control unit is further configured to: and when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight height of the freight aircraft.

Optionally, the control unit controls whether the cold air output by the environmental control air conditioning pack is introduced into the heat exchanger according to an indoor temperature, an outdoor temperature, a condensation temperature of an auxiliary cooling system and/or a flight altitude of the cargo airplane, and includes: when the freight airplane does not take off, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system; and/or after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

Optionally, the control unit, when the cargo airplane is not taking off, controls whether the cold air output by the environmental control air conditioning pack is introduced into the heat exchanger according to an indoor temperature, an outdoor temperature and/or a condensation temperature of an auxiliary cooling system, and includes: if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger; if the indoor temperature is judged to be higher than a fourth preset temperature threshold value and the condensing temperature is judged to be higher than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger; and/or the control unit controls whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight aircraft after the freight aircraft takes off, and the control unit comprises: if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling a cold air part output by the environment-controlled air conditioning pack to be introduced into the heat exchanger; and if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger.

A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.

According to the technical scheme of the invention, the environment-controlled air conditioner and the auxiliary cooling system are combined, so that the low-temperature fresh-keeping requirement of a user can be met, for example, the fresh-keeping freight transportation requirement that the ambient temperature in a freight aircraft is lower than 10 ℃ can be met, the cold air output by the environment-controlled air conditioner is fully utilized to reduce the condensation temperature of the auxiliary cooling system, the reliability is improved, and the adaptability and the performance of the auxiliary cooling system are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a method diagram illustrating one embodiment of a method for environmental control of a cargo aircraft provided by the present invention;

FIG. 2 is a schematic diagram of the integrated system for the cargo aircraft environmental air conditioning and auxiliary cooling system of the present invention;

FIG. 3 is a method diagram of another embodiment of a method of environmental control of a cargo aircraft provided by the present invention;

FIG. 4 is a method diagram illustrating one embodiment of a method for environmental control of a cargo aircraft according to the present invention;

FIG. 5 is a method diagram of another embodiment of a method for environmental control of a cargo aircraft according to the present invention;

fig. 6 is a block diagram of an embodiment of an environment control device for a cargo aircraft according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

FIG. 2 is a schematic diagram of the integrated system of the cargo aircraft environmental air conditioning and auxiliary cooling system of the present invention. The freight aircraft environmental control air conditioning package and auxiliary cooling system includes: an environment-friendly air-conditioning pack 1; an auxiliary cooling system 2; environmentally controlling cold air 3; a heat exchanger 4; a main cargo tank 5; an air valve 6-1; and an air valve 6-2.

An environment-controlled air duct is arranged between the environment-controlled air conditioning pack 1 and the heat exchanger 4 of the auxiliary cooling system 2. The cooling air 3 from the loop control air conditioning pack 1 can be fed through the loop control air duct to the heat exchanger 4 of the auxiliary cooling system 2 for cooling the heat exchanger 4 and discharged into the outer loop. The air valve 6-2 is arranged at the output part of the environment-controlled air conditioning pack 1, which outputs environment-controlled cold air to the main cargo hold 5, the output quantity of the environment-controlled cold air of the environment-controlled air conditioning pack 1 can be controlled through the air valve 6-2, the air valve 6-1 is arranged at the output part of the environment-controlled air conditioning pack 1, which outputs the environment-controlled cold air to the heat exchanger 4, of the environment-controlled air conditioning pack 1, the air valve 6-1 is controlled through the air valve 6-1, the environment-controlled cold air 3 of the environment-controlled air conditioning pack 1 can pass through the output quantity of the environment-controlled air duct to the heat exchanger, and meanwhile, the heat exchanger is provided with the heat exchanger bypass valve 7. An air valve 6-1 is arranged at an inlet of the environment-controlled air duct (namely, the environment-controlled air-conditioning pack 1 outputs environment-controlled cold air to the heat exchanger 4), whether the environment-controlled cold air output by the environment-controlled air-conditioning pack 1 is introduced into the heat exchanger 4 of the auxiliary cooling system 2 through the environment-controlled air duct or not can be controlled by controlling the opening and closing of the air valve 6-1, and the output quantity of the environment-controlled cold air can be controlled by controlling the circulating section through the air valve 6-1. Alternatively, the heat exchanger 4 may employ a multi-strand heat exchanger or a plurality of heat exchangers. Alternatively, the ram air is used directly for cooling the heat exchanger 4 of the auxiliary cooling system 2.

In the conventional system, the environmentally-controlled cold air 3 output from the environmentally-controlled air conditioning pack 1 is only introduced into the main cargo compartment 5. According to the technical scheme of the invention, a ring control air channel is additionally arranged between the ring control air conditioning pack 1 and the heat exchanger 4 of the auxiliary cooling system 2, and ring control cold air 3 output by the ring control air conditioning pack 1 can be introduced into the heat exchanger 4 of the auxiliary cooling system 2 through the ring control air channel to be used for cooling the heat exchanger 4 and is discharged into an outer ring.

Fig. 1 is a method schematic diagram of an embodiment of the method for controlling the environment of a cargo aircraft according to the present invention.

As shown in fig. 1, according to an embodiment of the present invention, the control method includes at least step S110 and step S120.

Step S110, determining whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold.

Step S120, if the target set temperature is greater than or equal to the first preset temperature threshold, turning on the auxiliary cooling system, and if the set target temperature is less than the first preset temperature threshold, turning off the auxiliary cooling system.

Specifically, when the cargo airplane does not take off, namely when the cargo airplane is on the ground, the auxiliary cooling system control panel is started at the set target temperature T (for example, the target temperature set by the user) on the ground, and the air conditioning pack is operated in an environment-friendly mode. For example, the first preset temperature threshold is a, if the set target temperature T is more than or equal to a, the requirement of the target can be met by judging the normal operation of the environment-controlled air-conditioning pack without starting an auxiliary cooling system; otherwise, the auxiliary cooling system is started to normally operate, and the environment-friendly air conditioning pack normally operates. Optionally, the value range of the first preset temperature threshold includes 10 to 30 ℃.

After the freight airplane takes off, if the set target temperature T is more than or equal to a, the normal operation of the environment-controlled air-conditioning package is judged to meet the target requirement, and an auxiliary cooling system is not required to be started; otherwise, the auxiliary cooling system is started to normally operate, and the environment-friendly air conditioning pack normally operates.

Fig. 3 is a method schematic diagram of another embodiment of the method for controlling the environment of a cargo aircraft according to the present invention.

As shown in fig. 3, according to an embodiment of the present invention, the control method further includes step S130.

And step S130, when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight altitude of the freight aircraft.

Specifically, when the cargo airplane does not take off, whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger is controlled according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system.

And if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the second preset temperature threshold includes 16-30 ℃; the value range of the third preset temperature threshold value is 30-40 ℃.

For example, the second preset temperature threshold is b, the third preset temperature threshold is c, if the indoor temperature is greater than b and the outer ring temperature is greater than c, it is determined that the condenser of the auxiliary cooling system needs to cool part of air of the environmental control air conditioning pack, the output quantity of cold air of the environmental control air conditioning pack can be controlled through the air valve 6-1, meanwhile, the auxiliary cooling system controls the bypass valve 7 of the heat exchanger to be opened, heat on the heat exchanger is taken away by the cold air, and the operating condensation temperature is reduced. The air valve 6-1 can control the air quantity by controlling the flowing section, the air quantity can be adjusted according to the condensation temperature, and if the condensation temperature is high, the air quantity is properly increased; if the condensation temperature is low, it is suitably reduced.

And if the indoor temperature is judged to be greater than a fourth preset temperature threshold value and the condensing temperature is judged to be greater than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the fourth preset temperature threshold includes 10-15 ℃; the value range of the fifth preset temperature threshold value is 30-40 ℃.

For example, the fourth preset temperature threshold is d, the fifth preset temperature threshold is e, if the indoor temperature is greater than d, and the condensation temperature of the auxiliary cooling system is greater than e, it is determined that the condensation temperature of the auxiliary cooling system is too high, all cold air of the environmental control air conditioning pack needs to be cooled, the air valve 6-1 for outputting the environmental control cold air to the heat exchanger is fully opened, the air valve 6-2 is closed, the bypass valve 7 of the heat exchanger is opened, the condensation temperature is optimally reduced, and the air valve 6-2 for outputting the cold air to the main cargo compartment by the environmental control air conditioning pack is closed. In order to avoid the resistance and flow generated by the ram air duct during flying, the size of the ram air duct is as small as possible, so that the condensation air quantity is small on the ground, the condensation temperature is too high when the indoor and outer ring temperatures are high, the system high pressure is too high, the operation efficiency is low, all cold air output by the air conditioner package is preferentially used for reducing the condensation temperature, the system efficiency is improved, and therefore the air valve for outputting the ring-controlled cold air to the main cargo compartment is closed.

And after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

And if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling the cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the sixth preset temperature threshold includes 16-30 ℃, and the value range of the first preset height threshold includes 5000-8000 m.

For example, if the sixth preset temperature threshold is f and the first preset height threshold is h1, considering that the altitude (flying altitude) of the aircraft is affected by the amount of air entering the main cargo compartment from the climate control pack, and if the indoor temperature is greater than f and the altitude is less than h1, the climate control pack cools a part of the air, the amount of cool air in the climate control pack may be controlled by an air flap outputting the cool air to the heat exchanger, and the auxiliary cooling system controls the bypass valve of the heat exchanger to be opened, and the cool air is taken away by the heat exchanger, thereby lowering the operating condensation temperature.

And if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger. The second preset height threshold is greater than the first preset height threshold. Optionally, the value range of the second preset height threshold includes 8000 to 10000 m.

For example, the second preset altitude threshold is h2, if the altitude is greater than h2, the optimization ensures the flight altitude of the aircraft, the climate control pack is normally operated, the air valve 6-1 outputting the climate control air to the auxiliary cooling system heat exchanger is closed, and the auxiliary cooling system heat exchanger bypass valve is closed.

For clearly illustrating the technical solution of the present invention, the following describes an implementation flow of the method for controlling the environment of a cargo aircraft according to an embodiment of the present invention.

Fig. 4 is a method schematic diagram of an embodiment of the method for controlling the environment of a cargo aircraft according to the present invention. As shown in fig. 4, when the cargo airplane is not taking off, i.e. ground operation, first, the auxiliary cooling system control panel sets the target temperature T at ground startup, and the air conditioning pack is operated in an environment-friendly manner. If the set target temperature T is more than or equal to a, judging that the normal operation of the environment-controlled air-conditioning pack can meet the target requirement without starting an auxiliary cooling system; otherwise, the auxiliary cooling system and the environment-friendly air conditioning pack normally operate. Whether the indoor temperature is greater than b and the outer ring temperature is greater than c is further judged, if the indoor temperature is greater than b and the outer ring temperature is greater than c, the auxiliary cooling system condenser is judged to be high in temperature and needs to be cooled by air of the air conditioning pack in an environment-friendly mode, the amount of cold air of the air conditioning pack can be controlled through an air valve, meanwhile, a bypass valve of a heat exchanger of the auxiliary cooling system is opened and is taken away by the cold air through the heat exchanger, and the operating condensation temperature is reduced; if the indoor temperature is higher than d and the condensing temperature is higher than e, the condensing temperature of the auxiliary cooling system is judged to be too high, all cold air of the air conditioning pack is required to be cooled, the air valve entering the heat exchanger is fully opened, the condensing temperature is reduced, and the other air valve entering the main cargo compartment is closed. a: 10-30 ℃, b: 16-30 ℃, c: 30-40 ℃, d: 10-15 ℃, e: 30-40 DEG C

Fig. 5 is a method schematic diagram of another embodiment of the method for controlling the environment of a cargo aircraft according to the present invention. As shown in fig. 5, after the freight airplane takes off, if the set target temperature is greater than or equal to a, the environment-controlled air conditioning pack is judged to normally operate to meet the target requirement without starting an auxiliary cooling system; otherwise, the auxiliary cooling system and the environment-friendly air conditioning pack normally operate. Considering that the altitude (flying height) of the airplane is influenced by the air quantity of the air-conditioning bag entering the main cargo hold, if the indoor temperature is greater than f and the altitude is less than h1, part of air of the environment-controlled air-conditioning bag is cooled, the cold air quantity of the environment-controlled air-conditioning bag can be controlled through the air valve 6-1, meanwhile, the auxiliary cooling system controls the bypass valve 7 of the heat exchanger to be opened, the heat on the heat exchanger is taken away by the cold air, and the operating condensation temperature is reduced; if the height is greater than h2, optimizing to ensure the flight height of the airplane, normally operating the environment-friendly air conditioning pack, closing an air valve 6-1 for outputting environment-friendly cold air to a heat exchanger of the auxiliary cooling system, and controlling a bypass valve of the heat exchanger to be closed by the auxiliary cooling system. The value range of h1 includes, for example: 5000-8000 m, and the value range of h2 includes: 8000-10000 m.

Fig. 6 is a block diagram of an embodiment of an environment control device for a cargo aircraft according to the present invention. As shown in fig. 6, the control device 100 includes a determination unit 110 and a control unit 120.

The determination unit 110 is configured to determine whether the set target temperature of the auxiliary cooling system is greater than or equal to a first preset temperature threshold.

The control unit 120 is configured to turn on the auxiliary cooling system if the determining unit 110 determines that the target set temperature is greater than or equal to the first preset temperature threshold, and not turn on the auxiliary cooling system if the determining unit determines that the set target temperature is less than the first preset temperature threshold.

Specifically, when the cargo airplane does not take off, namely when the cargo airplane is on the ground, the auxiliary cooling system control panel is started at the set target temperature T (for example, the target temperature set by a user on the control panel) on the ground, and the air conditioning pack is operated in an environment-friendly mode. For example, if the first preset temperature threshold is a, and the determination unit 110 determines that the set target temperature T is greater than or equal to a, it is determined that the environmental control air conditioning pack normally operates to meet the target requirement without starting the auxiliary cooling system; otherwise, the control unit 120 turns on the auxiliary cooling system, the auxiliary cooling system operates normally, and the environmental control air conditioning pack operates normally. Optionally, the value range of the first preset temperature threshold includes 10 to 30 ℃.

After the freight airplane takes off, if the judgment unit 110 judges that the set target temperature T is more than or equal to a, the environment-controlled air conditioning pack can meet the target requirement by judging the normal operation without starting an auxiliary cooling system; otherwise, the control unit 120 turns on the auxiliary cooling system, the auxiliary cooling system operates normally, and the environmental control air conditioning pack operates normally.

The control unit is further configured to: and when the auxiliary cooling system operates, controlling whether the cold air output by the environment-controlled air-conditioning pack is introduced into the heat exchanger or not according to the indoor temperature, the outdoor temperature, the condensation temperature of the auxiliary cooling system and/or the flight height of the freight aircraft.

Specifically, when the cargo airplane does not take off, whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger is controlled according to the indoor temperature, the outdoor temperature and/or the condensation temperature of the auxiliary cooling system.

And if the indoor temperature is judged to be greater than a second preset temperature threshold value and the outdoor temperature is judged to be greater than a third preset temperature threshold value, controlling a cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the second preset temperature threshold includes 16-30 ℃; the value range of the third preset temperature threshold value is 30-40 ℃.

For example, the second preset temperature threshold is b, the third preset temperature threshold is c, if the indoor temperature is greater than b, and the outer ring temperature is greater than c, it is determined that the condenser of the auxiliary cooling system needs to cool part of air of the environmental control air conditioner package, the output quantity of cold air of the environmental control air conditioner package can be controlled through the air valve, meanwhile, the auxiliary cooling system controls the bypass valve of the heat exchanger to be opened, the heat exchanger is taken away by the cold air, and the operating condensation temperature is reduced. The air valve can control the air quantity by controlling the flowing section, the air quantity can be adjusted according to the condensation temperature, and if the condensation temperature is high, the air valve is properly opened; if the condensation temperature is low, it is suitably reduced.

And if the indoor temperature is judged to be greater than a fourth preset temperature threshold value and the condensing temperature is judged to be greater than a fifth preset temperature threshold value, controlling all cold air output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the fourth preset temperature threshold includes 10-15 ℃; the value range of the fifth preset temperature threshold value is 30-40 ℃.

For example, the fourth preset temperature threshold is d, the fifth preset temperature threshold is e, if the indoor temperature is greater than d, and the condensation temperature of the auxiliary cooling system is greater than e, it is determined that the condensation temperature of the auxiliary cooling system is too high, all the cold air of the environmental control air conditioning pack needs to be cooled, the air valve 6-1 for outputting the environmental control cold air to the heat exchanger is fully opened, the bypass valve 7 of the heat exchanger is opened, the condensation temperature is preferably guaranteed to be reduced, and the air valve 6-2 for outputting the cold air to the main cargo compartment by the environmental control air conditioning pack is closed. In order to avoid the resistance and flow generated by the ram air duct during flying, the size of the ram air duct is as small as possible, so that the condensation air quantity is small on the ground, the condensation temperature is too high when the indoor and outer ring temperatures are high, the system high pressure is too high, the operation efficiency is low, all cold air output by the air conditioner package is preferentially used for reducing the condensation temperature, the system efficiency is improved, and therefore the air valve for outputting the ring-controlled cold air to the main cargo compartment is closed.

And after the freight airplane takes off, controlling whether the cold air output by the environment-controlled air conditioning pack is introduced into the heat exchanger or not according to the indoor temperature and the flying height of the freight airplane.

And if the indoor temperature is judged to be higher than a sixth preset temperature threshold value and the flying height is smaller than a first preset height threshold value, controlling the cold air part output by the environment-controlled air-conditioning pack to be introduced into the heat exchanger. Optionally, the value range of the sixth preset temperature threshold includes 16-30 ℃, and the value range of the first preset height threshold includes 5000-8000 m.

For example, if the sixth preset temperature threshold is f and the first preset height threshold is h1, considering that the altitude (flying altitude) of the aircraft is affected by the amount of air entering the main cargo compartment from the climate control pack, and if the indoor temperature is greater than f and the altitude is less than h1, the climate control pack cools a part of the air, the amount of cool air in the climate control pack may be controlled by an air flap outputting the cool air to the heat exchanger, and the auxiliary cooling system controls the bypass valve of the heat exchanger to be opened, and the cool air is taken away by the heat exchanger, thereby lowering the operating condensation temperature.

And if the flying height is larger than a second preset height threshold value, the cold air output by the environment-controlled air conditioner package is not introduced into the heat exchanger. The second preset height threshold is greater than the first preset height threshold. Optionally, the value range of the second preset height threshold includes 8000 to 10000 m.

For example, the second predetermined altitude threshold is h2, if the altitude is greater than h2, the optimization ensures the aircraft flight altitude, the climate pack is operating normally, the air flap outputting the climate air to the auxiliary cooling system heat exchanger is closed, and the heat exchanger bypass valve of the auxiliary cooling system is closed.

The invention also provides a storage medium corresponding to the method for controlling the environment of a cargo aircraft, on which a computer program is stored which, when being executed by a processor, carries out the steps of any of the methods described above.

Therefore, the scheme provided by the invention combines the environment-controlled air conditioner and the auxiliary cooling system, can meet the low-temperature requirement of users, for example, can meet the fresh-keeping freight transportation requirement that the ambient temperature in a freight aircraft is lower than 10 ℃, and fully utilizes the cold air output by the environment-controlled air conditioner to reduce the condensation temperature of the auxiliary cooling system, thereby improving the reliability and the adaptability and the performance of the auxiliary cooling system.

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.