Helicopter evaporative cycle refrigeration system

Abstract

The utility model relates to the field of refrigeration provides a kind of helicopter evaporative refrigeration cycle system. Including compressor assembly, condenser assembly, front evaporator assembly, rear evaporator assembly, condenser assembly includes condenser core and the fan structure of installation in the one side of condenser core, the fan structure includes with the square cover corresponding of condenser core leeward face, the outside of square cover is equipped with cylindrical cover, cylindrical cover is interconnected with the square cover inner chamber, fan is installed in cylindrical cover, the outside of cylindrical cover is equipped with hemispherical cover, the diameter of cylindrical cover is same with the diameter of hemispherical cover, the bottom of hemispherical cover is equipped with vertical air outlet pipe, the air outlet pipe is from the floor of helicopter and is communicated with outside air. Condenser is placed vertically, air is introduced and heat exchange is realized by installing fan in air outlet end, and air square is realized by spherical cover The wind of square is turned and discharged downward outside helicopter, the compact installation of condenser in the position of helicopter nose is realized.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration, specifically to a helicopter evaporative cycle refrigeration system. Background Technology

[0002] The helicopter evaporative cooling system primarily provides cool air to the cockpit and cabin to regulate temperature and humidity, ensuring passenger comfort and the proper functioning of electronic equipment. Due to the compact interior space of helicopters, the installation space for the evaporative cooling system is limited. The condenser of the evaporative cooling system is relatively large; when the condenser core is placed horizontally, it occupies a significant horizontal area, and if placed vertically, it would hinder the downward exhaust of cooling air. Furthermore, the compressor's power drive is a crucial consideration for the air conditioning system. Options include using a DC motor to drive the compressor and powering it with the helicopter's electrical system, or using a belt pulley drive and powering it with the helicopter's engine. The choice of compressor power source must take into account the installation space available for the compressor on the helicopter and the energy distribution requirements. Summary of the Invention

[0003] To overcome the space limitations of the evaporative cooling system on a helicopter, this invention provides a helicopter evaporative cooling system.

[0004] The technical solution adopted by this utility model is as follows: A helicopter evaporative cooling cycle system includes a compressor assembly, a condenser assembly, a front evaporator assembly, a rear evaporator assembly, a cooling control box, and a cockpit switch panel. The cockpit switch panel is mounted on the cockpit control panel and is connected to the cooling control box via cables. The cooling control box is connected to the compressor assembly, condenser assembly, and evaporator assembly via cables. The compressor assembly includes a compressor and a pulley structure connected to the compressor. The condenser assembly includes a condenser core and a fan structure mounted on one side of the condenser core. The evaporator assembly includes an evaporator housing and an evaporator core. The compressor's exhaust port is connected to the... The refrigerant inlet of the condenser is connected, and the refrigerant outlet of the condenser is connected to the refrigerant inlet of the corresponding evaporator core of the front evaporator assembly and the rear evaporator assembly through the liquid outlet pipe. The refrigerant outlet of the evaporator core is connected to the suction port of the compressor through the return pipe. The fan structure includes a square cover corresponding to the leeward side of the condenser core. A cylindrical cover is installed on the outside of the square cover. The cylindrical cover is connected to the inner cavity of the square cover. A fan is installed inside the cylindrical cover. A hemispherical cover is installed on the outside of the cylindrical cover. The diameter of the cylindrical cover is the same as the diameter of the hemispherical cover. A vertical air outlet pipe is installed at the bottom of the hemispherical cover. The air outlet pipe passes through the floor of the helicopter and communicates with the outside air.

[0005] Furthermore, the pulley structure includes an upper pulley, a lower pulley, a belt, and a protective plate. The upper pulley is fixedly connected to the rotating shaft of the compressor, the lower pulley is fixed to the tail shaft of the helicopter via a triangular flange, and the protective plate is mounted on the outside of the pulley via a bracket, covering the pulley and the belt.

[0006] Furthermore, the refrigerant outlets of the evaporator cores of the front evaporator assembly and the rear evaporator assembly are connected to the compressor's return pipe via pipes and low-pressure tees.

[0007] Furthermore, the liquid outlet pipe of the condenser is connected to the refrigerant inlet of the evaporator core of the front evaporator assembly and the rear evaporator assembly via a high-pressure tee and a pipe.

[0008] Furthermore, the evaporator housing is provided with an air inlet and an air outlet, and the air outlet includes a rectangular air outlet cavity and a cylindrical air duct interface connected to the rectangular air outlet cavity.

[0009] Furthermore, a one-way valve is installed on the exhaust pipe of the compressor; a liquid receiver and a dryer filter are installed on the liquid outlet pipe of the condenser.

[0010] Furthermore, solenoid valves and expansion valves are installed on the pipes connecting the high-pressure tee to the evaporator cores of the front and rear evaporator assemblies.

[0011] After adopting the above technical solutions, the beneficial effects of this utility model are as follows: In order to save installation space, the condenser is placed vertically, and the air is drawn and heat exchanged by installing a fan at the air outlet. The horizontal square air is turned backward and downward and discharged to the outside of the helicopter by a spherical cover, so as to achieve compact installation of the condenser at the nose of the helicopter. The compressor is driven by connecting to the tail shaft at the tail of the helicopter through a pulley assembly, which can utilize the power at the tail and avoid the compressor occupying installation space at the nose. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Compressor; 2. Condenser core; 3. Evaporator housing; 4. Upper pulley; 5. Lower pulley; 6. Belt; 7. Protective plate; 8. Triangular flange; 9. Exhaust pipe; 10. Square cover; 11. Cylindrical cover; 12. Hemispherical cover; 13. Air outlet pipe; 14. Liquid outlet pipe; 15. High-pressure tee; 16. Front evaporator assembly; 17. Rear evaporator assembly; 18. Air outlet; 19. Low-pressure tee; 20. Return pipe; 21. Refrigeration control box; 22. Cockpit switch panel. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: like Figure 1 As shown, a helicopter evaporative cooling system comprises a compressor assembly, a condenser assembly, a front evaporator assembly, a rear evaporator assembly, a cooling control box 21, a cockpit switch panel 22, and related piping and air conditioning system accessories, used for cooling within the helicopter. The cockpit switch panel 22 is mounted on the cockpit control panel and is connected to the cooling control box 21 via cables. The cooling control box 21 is connected to the compressor assembly, condenser assembly, and evaporator assembly via cables, collecting signals from sensors such as temperature and pressure and controlling the actions of each actuator.

[0015] The compressor assembly consists of a compressor 1 and a pulley structure connected to the compressor. The condenser assembly includes a vertically arranged condenser core 2 and a fan structure installed on one side of the condenser core. The evaporator assembly includes an evaporator housing 3 and an evaporator core.

[0016] The compressor 1 is installed in an unoccupied position at the tail of the aircraft. The pulley structure includes an upper pulley 4, a lower pulley 5, a belt 6, and a protective plate 7. The upper pulley 4 is fixedly connected to the shaft of the compressor 1, and the lower pulley 5 is fixed to the tail shaft of the helicopter via a triangular flange 8. When the tail shaft rotates, it drives the compressor 1 to rotate through the pulley assembly. The protective plate 7 is installed on the outside of the pulley 4 and is fixed to the housing of the compressor 1 by a bracket. The protective plate 7 protects the pulley and belt, improving safety.

[0017] The compressor 1 draws refrigerant from the system through its suction port, compresses it, and then enters the refrigerant passage of the condenser core 2 through the compressor discharge pipe 9 and a one-way valve. The fan mechanism on one side of the condenser core 2 includes a square cover 10 corresponding to the leeward side of the condenser core. The square cover 10 facilitates airflow by covering the condenser core 2. A cylindrical cover 11 is installed on the outer center of the square cover 10, and the cylindrical cover 11 is connected to the inner cavity of the square cover 10. A fan is installed inside the cylindrical cover 11. When the fan rotates, the air inside the chamber passes through the condenser core 2 and enters the square cover 10, then passes through the square cover 10 and the cylindrical cover 11 in sequence before being discharged. To achieve downward exhaust from the vertical condenser, a hemispherical cover 12 is installed on the outside of the cylindrical cover 11. The diameter of the cylindrical cover 11 is the same as that of the hemispherical cover 12. The hot air after heat exchange is redirected inside the hemispherical cover 12 and runs vertically downward. A vertical air outlet pipe 13 is installed at the bottom of the hemispherical cover. The air outlet pipe 13 passes through the floor of the helicopter and communicates with the outside air to exhaust the hot air.

[0018] After heat exchange, the refrigerant exits through the condenser outlet pipe 14, and then passes sequentially through the receiver and dryer filter before being split into two paths by a high-pressure tee 15. These paths then pass through a solenoid valve and an expansion valve, respectively, before being sent to the evaporator cores of the front evaporator assembly 16 and the rear evaporator assembly 17. The evaporator housing has an air inlet and an air outlet. The air inlet is connected to a fan or duct, and the air outlet 18 consists of a rectangular air outlet cavity and a cylindrical duct interface connected to the rectangular air outlet cavity. After heat exchange in the two evaporator cores, the refrigerant is collected through the low-pressure tee 19 into the compressor return pipe 20 and enters the suction port of compressor 1, starting the next compression refrigeration cycle.

Claims

1. A helicopter evaporative cooling cycle system, comprising a compressor assembly, a condenser assembly, a front evaporator assembly, a rear evaporator assembly, a refrigeration control box, and a cockpit switch panel. The cockpit switch panel is mounted on the cockpit control panel and connected to the refrigeration control box via cables. The refrigeration control box is connected to the compressor assembly, the condenser assembly, and the evaporator assembly via cables. The compressor assembly includes a compressor and a pulley structure connected to the compressor. The condenser assembly includes a condenser core and a fan structure mounted on one side of the condenser core. The evaporator assembly includes an evaporator housing and an evaporator core. The compressor's exhaust port is connected to the refrigerant inlet of the condenser via an exhaust pipe. The condenser's refrigerant outlet is connected to the refrigerant inlets of the corresponding evaporator cores of the front and rear evaporator assemblies via liquid outlet pipes. The refrigerant outlet of the evaporator core is connected to the compressor's suction port via a return pipe. The system is characterized in that... The fan structure includes a square cover corresponding to the leeward side of the condenser core. A cylindrical cover is installed on the outside of the square cover, and the cylindrical cover is connected to the inner cavity of the square cover. A fan is installed inside the cylindrical cover. A hemispherical cover is installed on the outside of the cylindrical cover. The diameter of the cylindrical cover is the same as that of the hemispherical cover. A vertical air outlet pipe is installed at the bottom of the hemispherical cover. The air outlet pipe extends from the floor of the helicopter and communicates with the outside air.

2. The helicopter evaporative cycle refrigeration system according to claim 1, characterized in that, The pulley structure includes an upper pulley, a lower pulley, a belt, and a protective plate. The upper pulley is fixedly connected to the rotating shaft of the compressor, and the lower pulley is fixed to the tail shaft of the helicopter through a triangular flange. The protective plate is installed on the outside of the pulley through a bracket and covers the pulley and the belt.

3. The helicopter evaporative cycle refrigeration system according to claim 1, characterized in that, The refrigerant outlets of the evaporator cores of the front and rear evaporator assemblies are connected to the compressor's return pipe via pipes and low-pressure tees.

4. The helicopter evaporative cycle refrigeration system according to claim 1, characterized in that, The liquid outlet pipe of the condenser is connected to the refrigerant inlet of the evaporator core of the front evaporator assembly and the rear evaporator assembly via a high-pressure tee and a pipe.

5. A helicopter evaporative cycle refrigeration system according to claim 1, characterized in that, The evaporator housing is provided with an air inlet and an air outlet. The air outlet includes a rectangular air outlet cavity and a cylindrical air duct interface connected to the rectangular air outlet cavity.

6. A helicopter evaporative cycle refrigeration system according to claim 1, characterized in that, A one-way valve is installed on the exhaust pipe of the compressor; a liquid receiver and a dryer filter are installed on the liquid outlet pipe of the condenser.

7. A helicopter evaporative cycle refrigeration system according to claim 4, characterized in that, Solenoid valves and expansion valves are installed on the pipes connecting the high-pressure tee to the evaporator cores of the front and rear evaporator assemblies.

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