A helicopter equipment cabin heat dissipation system and a heat dissipation control method

Abstract

The application provides a helicopter equipment cabin heat dissipation system and a heat dissipation control method. The helicopter equipment cabin heat dissipation system comprises a control device, a temperature sensor, an upper air outlet, an equipment rack, a heat dissipation fan and a lower air outlet and the like. The wind direction, the air volume and the hot air flow direction of the heat dissipation fan can be adjusted according to the ambient temperature and the flight state of the helicopter. During use, the power consumption can be reduced, the noise can be reduced, in a low-temperature environment, the hot air can be discharged into the cabin to warm the cabin, and the comprehensive utilization of the heat of the helicopter is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of the design of the anti-icing of the air intake of a helicopter, and relates to a heat dissipation system for the equipment cabin of a helicopter and a heat dissipation control method. BACKGROUND

[0002] With the improvement of the performance of a helicopter, the power of various electronic devices in the equipment cabin is getting larger and larger, and the heat dissipated during the operation is also getting more and more, which can usually reach more than 5kw, and the demand for the performance of the heat dissipation system is also increasing.

[0003] At present, the fans with a constant rotating speed are mainly used on the helicopter to dissipate heat for the equipment cabin, and the air volume and the air direction are not adjustable, the working noise is large, the power consumption is high, and the rain is easily sucked into the equipment cabin during the flight in the rainy day, which affects the normal operation of the devices in the equipment cabin. SUMMARY

[0004] The purpose of the present application is:

[0005] The present application provides a heat dissipation system for the equipment cabin of a helicopter and a heat dissipation control method, which cools the equipment cabin by forced ventilation, has the advantages of low noise, low power consumption and heat comprehensive utilization, and can be used for dissipating heat for the electronic devices in the equipment cabin of a helicopter to ensure the stability of the working environment temperature.

[0006] Technical scheme

[0007] A heat dissipation system for the equipment cabin of a helicopter and a heat dissipation control method, comprising a control device, a temperature sensor, an equipment cabin and an equipment rack, the equipment rack has multiple layers and is arranged in the equipment cabin, an upper air port is arranged at the top of the equipment cabin, the upper air port is in communication with the cabin, the equipment cabin and the ambient air, a lower air port is arranged at the bottom of the equipment cabin, a heat dissipation fan is arranged on the lower air port, the heat dissipation fan is connected with the control device, the temperature sensor is arranged outside the equipment cabin and is connected with the control device, a conversion device is arranged in the upper air port and is connected with the control device, the state of the conversion device is controlled by the control device, and the equipment cabin is in communication with the cabin or the ambient air.

[0008] Preferably, the lower air port is located at the bottom of the fuselage of the helicopter, and the communication port of the upper air port with the ambient air is located at the side surface of the fuselage of the helicopter.

[0009] Preferably, the position of the upper air port in communication with the ambient air is provided with a rain blocking device.

[0010] Preferably, a filter screen is arranged on the lower air port, and the mesh size of the filter screen is 10mm-20mm.

[0011] Preferably, the equipment frame has multiple layers of partitions, each layer of partitions is provided with a support, and each layer of partitions has a through hole through which air flows out from below the electronic equipment after heat exchange and cooling.

[0012] Preferably, the heat dissipation control method of the system includes four application scenario control methods.

[0013] Preferably, when the helicopter is in a flight state in a high-temperature environment, the heat dissipation fan works in a high-speed state, the heat dissipation fan rotates forward, the air flows into the equipment cabin from the lower air outlet, the upper air outlet is in communication with the ambient air, and the hot air after heat exchange is discharged to the ambient air from the upper air outlet.

[0014] Preferably, when the helicopter is in a ground state in a high-temperature environment, the heat dissipation fan works in a high-speed state, the heat dissipation fan rotates reversely, the air flows from top to bottom, the upper air outlet is in communication with the ambient air, and the hot air after heat exchange is discharged to the ambient air from the lower air outlet.

[0015] Preferably, when the helicopter is in a flight state in a low-temperature environment, the heat dissipation fan works in a low-speed state, the heat dissipation fan rotates forward, the air flows from bottom to top, the upper air outlet is in communication with the cabin, and the hot air after heat exchange is discharged to the cabin from the upper air outlet.

[0016] Preferably, when the helicopter is in a ground state in a low-temperature environment, the heat dissipation fan works in a low-speed state, the heat dissipation fan rotates reversely, the air flows from top to bottom, the upper air outlet is in communication with the ambient air, and the hot air after heat exchange is discharged to the ambient air from the lower air outlet.

[0017] Beneficial effects:

[0018] The helicopter equipment cabin heat dissipation system and the heat dissipation control method can control the air volume of the fan according to the ambient temperature, and only work in a high-air-volume state in a high-temperature environment, and work in a medium-air-volume state and a low-air-volume state in a normal-temperature environment and a low-temperature environment, so that the noise and power consumption of the fan can be effectively reduced.

[0019] In the flight state, the air of the equipment cabin flows in from the lower air outlet and flows out from the upper air outlet, which can effectively prevent rainwater in the environment from entering the equipment cabin.

[0020] In the ground state, the air of the equipment cabin flows in from the upper air outlet and flows out from the lower air outlet, which can effectively prevent foreign matters on the ground from entering the equipment cabin.

[0021] In a low-temperature environment, in the flight state, the hot air after heat exchange in the equipment cabin is discharged to the cabin, which can supplement the heat of the cabin and improve the comfort of the passengers in the cabin. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1A schematic diagram of a helicopter equipment compartment heat dissipation system and heat dissipation control method provided by the present invention;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1—Cockpit; 2—Control unit; 3—Temperature sensor;

[0025] 4—Equipment compartment; 5—Upper air vent; 6—Equipment rack;

[0026] 7—Cooling fan; 8—Lower air vent. Detailed Implementation

[0027] The following detailed description, with reference to the accompanying drawings, illustrates a helicopter equipment compartment heat dissipation system and heat dissipation control method provided by the present invention.

[0028] like Figure 1 As shown, a helicopter equipment compartment heat dissipation system and heat dissipation control method include a control device 2, a temperature sensor 3, an upper air vent 5, an equipment rack 6, a cooling fan 7, and a lower air vent 8. The equipment compartment 4 is located behind the cockpit 1. The equipment rack 6 has multiple layers and is installed inside the equipment compartment 4. The upper air vent 5 is provided at the top of the equipment compartment 4 and is connected to the cockpit 1, the equipment compartment 4, and the ambient air. The lower air vent 8 is provided at the bottom of the equipment compartment 4, and the cooling fan 7 is installed on the lower air vent 8. The cooling fan 7 is connected to the control device 2. The temperature sensor 3 is located outside the equipment compartment 4 and is connected to the control device 2. A conversion device is provided inside the upper air vent 5 and is connected to the control device 2. The control device 2 controls the state of the conversion device to realize the connection between the cockpit 1 and the equipment compartment 4 or the connection between the equipment compartment 4 and the ambient air.

[0029] The control device 2 uses the temperature sensor 3 to detect the ambient temperature, and then controls the speed of the cooling fan 7 impeller according to the ambient temperature. The higher the ambient temperature, the higher the speed of the cooling fan 7 impeller, and vice versa.

[0030] The upper air vent 5 has a conversion device that can connect to the external environment or the cabin 1 according to the instructions of the control device 2;

[0031] The upper vent 5, which connects to the outside environment, is equipped with a rainproof device to prevent rainwater from entering the equipment compartment 4 through the upper vent 5.

[0032] The lower air vent 8 is equipped with a filter screen with a mesh size of 10mm to 20mm, which can prevent large pieces of sand and gravel splashed from the ground from entering the equipment compartment without creating too much airflow resistance.

[0033] The equipment rack 6 is installed in the equipment cabin 4, and each layer of the equipment rack 6 has a support member, so that the electronic equipment can be lifted, and a through hole is formed on each layer of the partition plate according to the heat dissipation requirement of each electronic equipment; after the air flows through the through hole, the air flows out from the lower part of the electronic equipment, and the air flows through the entire electronic equipment to be fully cooled.

[0034] The rotation speed of the heat dissipation fan 7 is controlled according to the ambient temperature detected by the temperature sensor 3; in a high-temperature environment, the heat dissipation fan 7 operates at high speed, in a normal-temperature environment, the heat dissipation fan 7 operates at medium speed, and in a low-temperature environment, the heat dissipation fan 7 operates at low speed.

[0035] The rotation direction of the heat dissipation fan 7 is controlled according to the state of the helicopter, so as to control the flow direction of the air; in a flight state, the heat dissipation fan 7 rotates in a forward direction, and the air flows from the lower part to the upper part; in a ground state, the heat dissipation fan 7 rotates in a reverse direction, and the air flows from the upper part to the lower part.

[0036] The communication state of the upper air outlet 5 is controlled according to the ambient temperature and the state of the helicopter; in a low-temperature environment and in a flight state, the upper air outlet 5 is controlled to be communicated with the cabin 1 through a switching device, the hot air after heat exchange is discharged into the cabin 1, and the cabin 1 can be supplemented with heat; in other flight states and in a ground state, the upper air outlet 5 is controlled to be communicated with the ambient air through the switching device, and the heat of the equipment cabin is discharged into the ambient air.

[0037] An embodiment of the present application: taking a certain type of helicopter as an example, in different temperatures and states, the working mode of the heat dissipation system is as follows:

[0038] a) When the ambient temperature is higher than 20 DEG C and in a flight state, the heat dissipation fan 7 operates at high speed (7200r / min), the air volume is about 2000kg / h, the heat dissipation fan 7 rotates in a forward direction, the air flows from the lower part to the upper part, the upper air outlet 5 is communicated with the ambient air, the hot air after heat exchange is discharged into the ambient air from the upper air outlet 5, and the rainwater entering the equipment cabin from the upper air outlet 5 can be effectively prevented;

[0039] b) When the ambient temperature is higher than 20 DEG C and in a ground state, the heat dissipation fan 7 operates at high speed (7500r / min), the air volume is about 1500kg / h, the heat dissipation fan 7 rotates in a reverse direction, the air flows from the upper part to the lower part, the upper air outlet 5 is communicated with the ambient air, the hot air after heat exchange is discharged into the ambient air from the lower air outlet 8, and the foreign matters sucked from the ground can be effectively prevented;

[0040] c) When the ambient temperature is lower than 20 DEG C, the heat dissipation fan 7 operates at low speed (4500r / min), in a flight state, the heat dissipation fan 7 rotates in a forward direction, the air flows from the lower part to the upper part, the upper air outlet 5 is switched, and the hot air after heat exchange is discharged into the cabin from the upper air outlet 5, so that the cabin can be supplemented with heat;

[0041] During the operation of the heat dissipation system, the installation position of the electronic device is raised, air flows through the partition opening of the equipment rack 6, and the air can flow through all surfaces of the electronic device to fully cool and exchange heat with the electronic device.

[0042] The above merely describes specific embodiments of the present application, and the detailed description of the present application is not exhaustive of conventional technology. However, the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heat dissipation system for a helicopter equipment compartment, characterized in that, The utility model relates to a kind of cooling system of helicopter, including control device (2), temperature sensor (3), equipment cabin (4), equipment rack (6), the equipment rack (6) has multiple layers, be arranged in the equipment cabin (4), the top of the equipment cabin (4) is provided with upper air port (5), upper air port (5) is communicated with cabin (1), equipment cabin (4) and ambient air, the bottom of the equipment cabin (4) is provided with lower air port (8), the lower air port (8) is provided with heat dissipation fan (7) on, the heat dissipation fan (7) is connected with control device (2), the temperature sensor (3) is arranged outside equipment cabin (4), and is connected with control device (2), the inside of the upper air port (5) is provided with conversion device, conversion device is connected with control device (2), the state of conversion device is controlled by control device (2), realize that equipment cabin (4) is communicated with cabin (1) or with ambient air;Helicopter is in ground state, heat dissipation fan (7) reverse rotation, wind direction is from top to bottom, upper air port (5) is communicated with ambient air, and hot air after heat exchange is discharged from lower air port (8) to ambient air;Helicopter is in flight state, heat dissipation fan (7) is forward rotation, wind direction is from bottom to top, upper air port (5) is communicated with cabin (1) or with ambient air, and hot air after heat exchange is discharged from upper air port (5) to cabin (1) or ambient air.

2. The system of claim 1, wherein, Lower air port (8) is located at the bottom of the helicopter fuselage, and the communication port of upper air port (5) with ambient air is located at the side of the helicopter fuselage.

3. The system of claim 1, wherein, The position, where upper air port (5) is communicated with ambient air, is provided with a rain blocking device.

4. The system of claim 1, wherein, Lower air port (8) is provided with a filter screen, and the mesh size of the filter screen is 10mm-20mm.

5. The system of claim 1, wherein, Equipment rack (6) has multiple layers of partitions, each layer of partition is provided with a support, and each layer of partition has a through hole, air flows out from the bottom of the electronic device after flowing through the through hole, and the air flows through the entire electronic device to be fully cooled.

6. The heat dissipation control method of the system according to any one of claims 1-5, characterized in that: The control method includes four application scenarios.

7. The heat radiation control method according to claim 6, wherein When helicopter is in flight state in high-temperature environment, heat dissipation fan (7) works in high-speed state, heat dissipation fan (7) is forward rotation, wind direction enters into equipment cabin (4) from lower air port (8), upper air port (5) is communicated with ambient air, and hot air after heat exchange is discharged from upper air port (5) to ambient air.

8. The heat radiation control method according to claim 6, wherein When helicopter is in ground state in high-temperature environment, heat dissipation fan (7) works in high-speed state, heat dissipation fan (7) is reverse rotation, wind direction is from top to bottom, upper air port (5) is communicated with ambient air, and hot air after heat exchange is discharged from lower air port (8) to ambient air.

9. The heat radiation control method according to claim 6, wherein When helicopter is in flight state in low-temperature environment, heat dissipation fan (7) works in low-speed state, heat dissipation fan (7) is forward rotation, wind direction is from bottom to top, upper air port (5) is communicated with cabin (1), and hot air after heat exchange is discharged from upper air port (5) to cabin (1).

10. The heat radiation control method according to claim 6, wherein When the helicopter is in a low-temperature environment and in a ground state, the heat dissipation fan (7) works in a low-speed state, the heat dissipation fan (7) rotates reversely, the air direction is from top to bottom, the upper air outlet (5) is communicated with the ambient air, and the hot air after heat exchange is discharged to the ambient air from the lower air outlet (8).

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