Ventilation cooling structure for an airborne device

Abstract

The application belongs to the technical field of ventilation cooling design of airborne equipment, and particularly relates to a ventilation cooling structure of airborne equipment, which comprises: a pressurized gas collection cavity arranged in a machine body, dot matrix holes are arranged on a position close to airborne equipment needing ventilation cooling and needing fire prevention, and a fire prevention net is arranged; an air inlet is arranged on the machine body; a plurality of flow guide hole plates are connected on the position close to the airborne equipment needing ventilation cooling but not needing fire prevention of the pressurized gas collection cavity, the flow guide hole plates are provided with flow guide holes and face the corresponding airborne equipment needing ventilation cooling; a plurality of ventilation pipes are connected on the pressurized gas collection cavity at inlet ends, outlet ends of the ventilation pipes point to the airborne equipment needing ventilation cooling and provided with ventilation interfaces, and the ventilation pipes are connected with the ventilation interfaces of the corresponding airborne equipment needing ventilation cooling; and a ram air pipe is connected on the pressurized gas collection cavity at an outlet end, an inlet end of the ram air pipe extends to outside of the machine body from the air inlet, and the ram air pipe faces a flow direction of a front end of the machine body.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ventilation and cooling design of airborne equipment, and particularly relates to a ventilation and cooling structure of airborne equipment. BACKGROUND

[0002] There are a large number of airborne equipment on an airplane, and a large number of the airborne equipment need to be ventilated and cooled, such as engines, radar devices, communication devices, etc.

[0003] At present, an air inlet is usually formed on the body to introduce low-temperature high-energy airflow from outside the body to form ram cooling air, and the ram cooling air is introduced to each airborne equipment needing ventilation and cooling through a ventilation pipe to ventilate and cool the airborne equipment.

[0004] Generally, the position of the air inlet formed on the body is specific, and the positions of each airborne equipment needing ventilation and cooling are dispersed. In the above technical solution, a large number of ventilation pipes are needed to ventilate and cool the airborne equipment, and complex pipeline design is needed, which makes the overall structure complex. In addition, there is a large resistance to the airflow, which results in a low flow rate of the ram cooling air to the airborne equipment, and the ventilation and cooling effect of the airborne equipment is poor. Especially when there is a frame or a box segment between the air inlet on the body and the airborne equipment needing ventilation and cooling, the ventilation pipe needs to pass through, which will damage the structural integrity of the frame or the box segment, further increase the complexity of the overall system and its weight, and reduce the reliability.

[0005] The present application is proposed in view of the above technical defects.

[0006] It should be noted that the disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solutions of the present application, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above content has been disclosed on the filing date of the present application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. SUMMARY

[0007] The purpose of the present application is to provide a ventilation and cooling structure of airborne equipment to overcome or alleviate at least one aspect of the known technical defects.

[0008] The technical solution of the present application is:

[0009] A ventilation and cooling structure of airborne equipment, comprising:

[0010] A pressurized plenum is arranged in the body, a dot-matrix hole is formed on a part close to the airborne equipment needing ventilation and cooling and needing fire prevention, and a fireproof net is arranged; an air inlet is formed on the body;

[0011] A plurality of flow guide hole plates are connected to the pressurized plenum near the airborne equipment that needs to be cooled by ventilation but does not need to be fireproof, and have flow guide holes on them, which are directed towards the corresponding airborne equipment that needs to be cooled by ventilation;

[0012] A plurality of ventilation pipes have their inlet ends connected to the pressurized plenum and their outlet ends directed towards the airborne equipment that needs to be cooled by ventilation and connected to the ventilation interface of the corresponding airborne equipment that needs to be cooled by ventilation;

[0013] A ram air pipe has its outlet end connected to the pressurized plenum and its inlet end extending out of the aircraft body from the air inlet and directed towards the direction of the incoming flow at the front end of the aircraft body.

[0014] According to at least one embodiment of the present application, in the airborne equipment ventilation and cooling structure described above, each ventilation pipe is a hard pipe or a flexible pipe.

[0015] According to at least one embodiment of the present application, in the airborne equipment ventilation and cooling structure described above, the structure further comprises:

[0016] A fairing is connected to the aircraft body and covers the outer periphery of the inlet end of the ram air pipe.

[0017] According to at least one embodiment of the present application, in the airborne equipment ventilation and cooling structure described above, the volume of the pressurized plenum is 15-20 seconds of airflow flux volume. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a schematic diagram of the airborne equipment ventilation and cooling structure provided by the embodiments of the present application;

[0019] Fig. 2 is a schematic diagram of the arrangement of the airborne equipment ventilation and cooling structure provided by the embodiments of the present application on an aircraft;

[0020] Wherein:

[0021] 1 - pressurized plenum; 2 - aircraft body; 3 - airborne equipment; 4 - flow guide hole plate; 5 - ventilation pipe; 6 - ram air pipe; 7 - fireproof net; 8 - fairing.

[0022] In order to better illustrate the embodiments, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual size of the product. In addition, the drawings are only used for illustrative purposes and cannot be understood as a limitation on the patent. DETAILED DESCRIPTION

[0023] In order to make the technical solutions of the present application and the advantages thereof clearer, the technical solutions of the present application will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used to explain the present application, but not to limit the present application. It should be noted that, for the purpose of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0024] In addition, unless otherwise defined, the technical terms or scientific terms used in the present application description should be the general meaning understood by the general technical personnel in the field of the present application. The words indicating the direction or position relationship such as "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer" and the like used in the present application description are only used to indicate the relative direction or position relationship, but not to imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and the relative position relationship may also change accordingly when the absolute position of the described object changes, therefore it cannot be understood as a limitation on the present application. The "first", "second", "third" and the like used in the present application description are only for the purpose of description, and are used to distinguish different components, but cannot be understood as indicating or implying relative importance. The "one", "an" or "the" and the like used in the present application description should not be understood as an absolute limitation on the quantity, but should be understood as the existence of at least one. The "include" or "contain" and the like used in the present application description means that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects.

[0025] In addition, it should be noted that, unless otherwise defined and limited, the "mounting", "connection", "connection" and the like used in the present application description should be understood in a broad sense, for example, the connection can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements, and the person skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0026] The technical solutions of the present application will be further described in detail below with reference to the drawings. Figs. 1-2 The present application will be further described in detail.

[0027] An airborne equipment ventilation cooling structure, comprising:

[0028] The pressurized plenum 1 is arranged in the airframe 2, and the lattice holes are arranged at the position close to the airborne equipment 3 which needs to be ventilated and cooled and needs to be fireproof, and the fireproof net 7 is arranged;

[0029] The plurality of flow guide hole plates 4 are connected to the pressurized plenum 1 at the position close to the airborne equipment 3 which needs to be ventilated and cooled but does not need to be fireproof, and the flow guide holes are arranged on the flow guide hole plates 4 and face the corresponding airborne equipment 3 which needs to be ventilated and cooled;

[0030] The plurality of ventilation pipes 5 are connected to the pressurized plenum 1 at the inlet end, and the outlet end faces the airborne equipment 3 which has a ventilation interface and needs to be ventilated and cooled, and the ventilation interface of the corresponding airborne equipment 3 which needs to be ventilated and cooled is connected;

[0031] The ram air pipe 6 is connected to the pressurized plenum 1 at the outlet end, and the inlet end extends out of the airframe 2 from the air inlet and faces the direction of the airflow at the front end of the airframe 2.

[0032] For the airborne equipment ventilation and cooling structure disclosed in the above embodiment, it can be understood by those skilled in the art that, during the flight of the aircraft, the low-temperature high-energy airflow outside the airframe 2 can be captured by the ram air pipe 6 and introduced into the pressurized plenum 1, and the steady-state pressurization is achieved by using the cavity effect. The lattice holes are arranged on the pressurized plenum 1 at the position close to the airborne equipment 3 which needs to be ventilated and cooled and needs to be fireproof, and the ventilation and cooling are performed. The lattice holes have a small diameter, which allows the airflow to pass through but can limit the spread of fire, thereby achieving the fireproof effect. In addition, the fireproof net 7 can further enhance the fireproof effect. At the position close to the airborne equipment 3 which needs to be ventilated and cooled but does not need to be fireproof, the flow guide holes on the flow guide hole plates 4 are arranged to perform ventilation and cooling, so as to reduce the local flow resistance. For the airborne equipment 3 which has a ventilation interface and needs to be ventilated and cooled, the ventilation and cooling are performed by using the ventilation pipe 5, thereby achieving a high ventilation and cooling efficiency.

[0033] In the airborne equipment ventilation and cooling structure disclosed in the above embodiment, the specific shape of the pressurized plenum 1 can be adaptively designed according to the internal shape of the airframe 2, and the pressurized plenum 1 can be as close as possible to each airborne equipment 3 which needs to be ventilated and cooled. The corresponding airborne equipment 3 which needs to be ventilated and cooled is ventilated and cooled by using the lattice holes + fireproof net, the flow guide holes on the flow guide hole plates, or the pipe, thereby avoiding the design of a complex pipeline structure, simplifying the overall structure, reducing the weight, and reducing the resistance to the airflow. The airborne equipment can achieve a good ventilation and cooling effect.

[0034] In some optional embodiments, in the airborne equipment ventilation and cooling structure, each ventilation pipe 5 is a hard pipe or a soft pipe.

[0035] In some alternative embodiments, the airborne equipment ventilation cooling structure described above further comprises:

[0036] A fairing 8 is connected to the body 2 and covers the outer periphery of the inlet end of the ram air duct 6 to provide protection for the ram air duct 6 and has a fairing effect.

[0037] In some alternative embodiments, the airborne equipment ventilation cooling structure described above, the volume of the pressurized plenum 1 is 15-20 seconds of airflow volume, or larger, to take full advantage of the plenum pressure stabilization function.

[0038] The embodiments described in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0039] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the related technical features. The technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. An airborne equipment ventilation cooling structure, characterized by, include: A pressurized air collection chamber (1) is set inside the body (2). Dot matrix holes are opened on the part that is close to the airborne equipment (3) that needs to be ventilated and cooled and that needs to be fireproof, and a fireproof net (7) is set on it; an air inlet is opened on the body (2); Multiple flow guide plates (4) are connected to the pressurized air collection chamber (1) near the airborne equipment (3) that needs ventilation and cooling but does not need fire protection. They have flow guide holes facing the corresponding airborne equipment (3) that needs ventilation and cooling. Multiple ventilation pipes (5) have their inlet ends connected to the pressurized air collection chamber (1) and their outlet ends pointing to the airborne equipment (3) that needs ventilation and cooling and have ventilation interfaces, and are connected to the ventilation interfaces of the corresponding airborne equipment (3) that needs ventilation and cooling. The sump air intake pipe (6) has its outlet end connected to the pressurized air collection chamber (1) and its inlet end extending from the air inlet to the outside of the body (2) and facing the front end of the body (2) in the direction of the incoming flow.

2. The airborne equipment ventilation and cooling structure according to claim 1, characterized in that, Each ventilation duct (5) is either a rigid duct or a flexible duct.

3. The airborne equipment ventilation and cooling structure according to claim 1, characterized in that, Also includes: The fairing (8) is connected to the body (2) and covers the outer periphery of the inlet end of the ram air pipe (6).

4. The airborne equipment ventilation and cooling structure according to claim 1, characterized in that, The volume of the pressurized gas collection chamber (1) is the volume of airflow for 15 to 20 seconds.

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