CN-115447784-B - System for increasing the pressure in a chamber of an air vehicle

Abstract

The present invention provides a system for increasing the pressure in a chamber of an airborne vehicle. The system maintains the indoor pressure of the air vehicle using the air conditioner provided in the air vehicle without additional equipment and without increasing the weight of the body, thereby preventing the introduction of external harmful gas into the indoor space and thus ensuring the safety of passengers.

Inventors

• JIN ZHONGYUAN
• Nan Runzhi

Assignees

• 现代自动车株式会社
• 起亚株式会社

Dates

Publication Date

20260505

Application Date

20220414

Priority Date

20210608

Claims (12)

1. 1. A system for increasing the pressure in a chamber of an airborne vehicle, comprising: A refrigerant line through which a refrigerant circulates, and which includes a compressor, a condenser, an expander, and an evaporator; A first air line connected to and branched from a refrigerant line upstream of the compressor through a first valve, and connected to the outside; a second air line connected to and branched from the refrigerant line downstream of the compressor through a second valve, and connected to the indoor space; A third valve provided in the second air line to allow the refrigerant or air flowing in the second air line to selectively flow to an outside or an indoor space, and And a controller configured to operate the first valve and the second valve to allow outdoor air to flow into the first air line, the refrigerant line, and the second air line by the start of the compressor, and to operate the third valve to allow refrigerant to be discharged to the outside and then allow air to flow into the indoor space after the completion of the refrigerant discharge when the state of the air vehicle is abnormal.
2. 2. The system of claim 1, wherein the first air line is connected at a first end thereof to the refrigerant line through the first valve and at a second end thereof to an air inlet through which air is selectively introduced under control of the controller.
3. 3. The system of claim 2, wherein the air inlet is normally kept closed and is opened when the controller receives information of the air vehicle status anomaly.
4. 4. The system of claim 1, wherein the second air line is connected at a first end thereof to a refrigerant line downstream of the condenser through the second valve and at a second end thereof to an indoor space.
5. 5. The system of claim 1, wherein the second air line is provided with a gas-liquid separator configured to separate refrigerant from air.
6. 6. The system of claim 1, wherein the first air line is provided with a first oxygen sensor and the second air line is provided with a second oxygen sensor located upstream of the third valve, and Wherein the controller is configured to compare the oxygen concentrations input from the first and second oxygen sensors to control the opening and closing of the third valve.
7. 7. The system according to claim 6, wherein when the oxygen concentration input from the second oxygen sensor is smaller than the oxygen concentration input from the first oxygen sensor by a predetermined value or more, the controller is configured to operate the third valve so that the refrigerant and the air flowing in the second air line can be discharged to the outside.
8. 8. The system of claim 1, wherein when the aerial vehicle is in a normal state and cooling of indoor space is required, the controller is configured to operate the first valve and the second valve to generate cooling air in the evaporator.
9. 9. The system of claim 1, further comprising: a heat pump line connected to the refrigerant line downstream of the compressor through a fourth valve and including an internal heat exchanger, and A heat pump expander disposed in the refrigerant line between the internal heat exchanger and the condenser.
10. 10. The system of claim 9, wherein when the aerial vehicle is in a normal state and heating of an indoor space is required, the controller is configured to operate the first valve, the second valve, and the fourth valve to circulate refrigerant through the refrigerant line and the heat pump line to generate heated air through an internal heat exchanger.
11. 11. The system of claim 9, wherein when the in-air vehicle state is abnormal, the controller is configured to operate the first, second and fourth valves such that outdoor air flows into the first, refrigerant and second air lines, and control the third valve to discharge refrigerant to the outside, and then to flow air into an indoor space after the refrigerant discharge is completed.
12. 12. The system of claim 1, wherein when the controller receives information of the decrease in the indoor pressure, the controller is configured to increase the driving amount of the compressor.

Description

System for increasing the pressure in a chamber of an air vehicle Technical Field The present invention relates to a system for increasing an indoor pressure of an air vehicle, and more particularly, to a system for increasing an indoor pressure of an air vehicle, which is configured to maintain an indoor pressure of an air vehicle using an air conditioner provided in an air vehicle without additional equipment and without increasing a weight of a fuselage, thereby preventing introduction of external harmful gas into an indoor space and thus securing safety of passengers. Background Recently, air vehicles capable of being used in various fields such as cargo containers and medical transportation are being developed, and air vehicles having high energy efficiency have become reliable enough for practical use. Conventional aircraft, such as air vehicles, use outdoor air introduced from jet engines to maintain their indoor pressure while flying at high speeds at high altitudes. This is necessary for the aircraft to prevent the introduction of harmful gases into the indoor space in the event of an external fire during flight. However, in the conventional case, since various devices are required to maintain the power source operation state related to the flight and an additional pressurizing system is required to maintain the indoor pressure of the aircraft, there is a disadvantage in that the weight of the aircraft increases. In addition, since a system for increasing the indoor pressure is not operated in the case of a fire at a power source, there is a problem in that the indoor pressure cannot be maintained. The details as described in the background are only intended to aid in the understanding of the background of the invention and should not be construed as an admission that they form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention Accordingly, the present invention provides a system for increasing an indoor pressure of an air vehicle, which is configured to maintain the indoor pressure of the air vehicle using an air conditioner provided in the air vehicle without additional equipment and without increasing a weight of a body, thereby preventing an external harmful gas from being introduced into an indoor space and thus securing safety of passengers. According to the present invention, the above and other objects can be accomplished by the provision of a system for increasing the indoor pressure of an in-air vehicle, which may include a refrigerant line through which a refrigerant circulates and which includes a compressor, a condenser, an expander, and an evaporator, a first air line connected to and branched from the refrigerant line upstream of the compressor through a first valve and connected to the outside, a second air line connected to and branched from the refrigerant line downstream of the compressor through a second valve and connected to the indoor space, a third valve provided in the second air line to allow the refrigerant or air flowing in the second air line to selectively flow to the outside or the indoor space, and a controller operating the first valve and the second valve to allow the outdoor air to flow into the first air line, the refrigerant line, and the second air line through the activation of the compressor and operating the third valve to allow the outdoor air to flow into the indoor space after the discharge of the refrigerant to the indoor space is completed. The first air line may be connected at a first end thereof to the refrigerant line through a first valve, and may be connected at a second end thereof to an air inlet through which air is selectively introduced under the control of the controller. The air inlet may be normally kept closed and may be opened when the controller receives information of an abnormality in the condition of the empty vehicle. The second air line may be connected at a first end thereof to the refrigerant line downstream of the condenser through the second valve and at a second end thereof to the indoor space. The second air line may be provided with a gas-liquid separator configured to separate the refrigerant from the air. The first air line may be provided with a first oxygen sensor, and the second air line may be provided with a second oxygen sensor located upstream of the third valve, wherein the controller may be configured to compare the oxygen concentrations input from the first oxygen sensor and the second oxygen sensor to control the opening and closing of the third valve. When the oxygen concentration input from the second oxygen sensor is smaller than the oxygen concentration input from the first oxygen sensor by a predetermined value or more, the controller may be configured to operate the third valve so that the refrigerant and air flowing in the second air line can be discharged to the outside. When the air vehicle is in a normal state and it is desired to cool the indoor space, t