CN115848629A

CN115848629A - Evaporation circulation refrigeration device and method integrated with maintenance channel

Info

Publication number: CN115848629A
Application number: CN202211582470.4A
Authority: CN
Inventors: 赵凯祥; 李彬; 罗平根; 韩林哲; 李烽超
Original assignee: China Helicopter Research and Development Institute
Current assignee: China Helicopter Research and Development Institute
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-28

Abstract

The invention discloses an evaporation cycle refrigerating device integrated with a maintenance channel, wherein an outlet of a condenser assembly (1) is connected with a refrigerant inlet end of an evaporator assembly (4), a refrigerant outlet end of the evaporator assembly (4) is connected with an inlet end of a compressor (3), and an outlet end of the compressor (3) is connected with an inlet end of the condenser assembly (1); the air inlet and the air outlet of the evaporator assembly (4) are respectively connected with an air return inlet (7) and an air supply outlet (5) in a cockpit (6), and the condenser assembly (1) is arranged in a maintenance channel at the bottom of the equipment cabin through a hinge (2) and serves as a maintenance cover; the cockpit and the equipment cabin are separated from the floor (8) by the cockpit. The invention fully utilizes the space installation equipment of the maintenance channel and utilizes the space between the frame beam structures as the air channel, so that the whole set of evaporation cycle refrigeration system is more compact in layout and occupies less space.

Description

Evaporation circulation refrigeration device and method integrated with maintenance channel

Technical Field

The invention belongs to the technical field of helicopter environmental control systems, and relates to an evaporation cycle refrigeration device and method integrated with a maintenance channel.

Background

With the continuous progress of helicopter technology, the comfort requirement in the helicopter cabin is gradually improved, and the number of airborne equipment is increased sharply, so that the available space and the available weight on the helicopter are very tight. As shown in the figure, the conventional helicopter design evaporation cycle refrigeration device occupies more space on the helicopter, each part occupies independent space, and the distance is long, so that a long refrigerant pipeline needs to be additionally arranged, and the design is shown in fig. 5. In addition, the conventional arrangement also needs to open large holes at two sides of the machine body to arrange air pipelines, the air pipelines are not smooth when the strength of the machine body is influenced by the large holes, the conventional arrangement form occupies a large amount of space and increases the weight of the equipment, and the installation space limit which is more compact is difficult to adapt to in the future. It is difficult to install the cooling device and arrange the air duct in the limited installation space of the helicopter.

Disclosure of Invention

The purpose of the invention is as follows: an evaporative cycle refrigeration unit and method integrated with a service aisle is provided. The invention fully utilizes the space installation equipment of the maintenance channel and utilizes the space between the frame beam structures as the air channel, so that the whole set of evaporation cycle refrigeration system is more compact in layout and occupies less space.

The technical scheme is as follows: an evaporation cycle refrigeration device integrated with a maintenance channel connects an outlet of a condenser assembly with a refrigerant inlet end of an evaporator assembly, a refrigerant outlet end of the evaporator assembly is connected with an inlet end of a compressor, and an outlet end of the compressor is connected with an inlet end of the condenser assembly; the air inlet and the air outlet of the evaporator assembly are respectively connected with an air return port and an air supply port in a cab, and the condenser assembly is characterized in that a maintenance channel arranged at the bottom of the equipment cabin through a hinge is used as a maintenance opening cover; the cockpit and the equipment cabin are separated from the floor by the cockpit.

In the aforementioned evaporation cycle refrigeration apparatus integrated with the maintenance passage, the compressor is disposed near the side of the hinge of the condenser assembly.

In the evaporation cycle refrigeration apparatus integrated with the maintenance passage, the water discharge port of the evaporator unit is located above the condenser unit.

In the evaporation circulation refrigerating device integrated with the maintenance channel, fresh air inlets are also formed in two sides of the equipment cabin; when the air conditioner works, external air enters from the fresh air inlets on the two sides and is discharged downwards through the condenser assembly.

In the evaporation circulation refrigerating device integrated with the maintenance channel, the evaporator assembly comprises an evaporator shell, an evaporator core support and a water outlet, the evaporator core is connected into the evaporator shell through the evaporator core support, and the evaporator core can be quickly detached from the bottom of the evaporator shell; the water generated by the condensation of the evaporator core body flows out through a water outlet at the bottom of the evaporator shell.

In the evaporation cycle refrigerating device integrated with the maintenance passage, the whole device is arranged in an equipment cabin below the floor of a cockpit.

In the application method of the evaporation cycle refrigeration device integrated with the maintenance channel, the condensed water discharged from the water outlet of the evaporator flows to the condenser assembly to realize heat dissipation.

In the use method of the evaporation cycle refrigeration device integrated with the maintenance channel, the condensed airflow enters from the fresh air inlets at two sides of the equipment compartment and flows through the condenser assembly to be discharged downwards.

Has the beneficial effects that: according to the helicopter evaporation cycle refrigeration device, the innovative condenser assembly is used as a maintenance channel cover cap and is arranged at the bottom of the machine body through the hinge, so that the internal space of the helicopter is hardly occupied, the problem of large space required by the condenser is solved, and the maintenance is facilitated; condensed air flow enters from two sides of the helicopter body and is discharged downwards from the bottom of the helicopter body through the condenser, a condensed air inlet duct does not need to be additionally arranged, air resistance is small, and refrigeration efficiency is high; the evaporator assembly is arranged right above the condenser by combining the space of the helicopter, condensed water can be directly discharged through the condenser, and meanwhile, the heat dissipation of the condenser is improved; the compressor and the refrigeration electronic control box are arranged above one side of the hinge of the condenser assembly nearby, so that a refrigerant pipeline is greatly shortened, the refrigerant pipeline is shortened by 70% compared with the conventional arrangement, and the weight is reduced by more than 4kg; the whole air return device is arranged below the floor of the cockpit, so that air return is simple and air distribution is facilitated during refrigeration.

Drawings

FIG. 1 is a schematic front view of an evaporative cycle refrigeration unit arrangement of a helicopter;

FIG. 2 is a schematic view of a helicopter evaporative cycle refrigeration unit in front elevation during maintenance;

FIG. 3 is a schematic left view of an arrangement of an evaporative cycle refrigeration unit of a helicopter;

FIG. 4 is a schematic illustration of the evaporator assembly disassembled;

fig. 5 is a schematic view showing a conventional arrangement of a refrigerator for a helicopter.

Reference numerals: 1-a condenser assembly; 2-a hinge; 3-a compressor; 4-an evaporator assembly; 41-evaporator shell; 42-an evaporator core; 43-evaporator core mounting brackets; 44-a water outlet; 5-an air supply outlet; 6-a cockpit; 7-air return inlet; 8-cockpit floor; 9-fresh air inlet; 10-warming assembly.

Detailed Description

Example 1. An evaporation cycle refrigerating device integrated with a maintenance channel is disclosed, referring to fig. 1-4, an outlet of a condenser assembly 1 is connected with a refrigerant inlet end of an evaporator assembly 4, a refrigerant outlet end of the evaporator assembly 4 is connected with an inlet end of a compressor 3, and an outlet end of the compressor 3 is connected with an inlet end of the condenser assembly 1; the air inlet and the air outlet of the evaporator assembly 4 are respectively connected with an air return inlet 7 and an air supply outlet 5 in a cockpit 6, and the condenser assembly 1 is characterized in that a maintenance channel arranged at the bottom of the equipment cabin through a hinge 2 is used as a maintenance opening cover; the cockpit and the equipment bay are separated from the floor 8 by the cockpit.

The compressor 3 is arranged close to the hinge 2 side of the condenser assembly 1.

The drain 44 of the evaporator unit 4 is located above the condenser unit 1. With this configuration, the heat radiation efficiency of the condenser unit 1 can be improved by the condensed water dropping to the condenser unit 1.

Fresh air inlets 9 are also formed in the two sides of the equipment cabin; when the air conditioner works, external air enters from the fresh air inlets 9 at two sides and is discharged downwards through the condenser assembly 1.

The evaporator assembly 4 comprises an evaporator shell 41, an evaporator core 42, an evaporator core support 43 and a water outlet 44, wherein the evaporator core 42 is connected in the evaporator shell 41 through the evaporator core support 43, and can be quickly detached from the bottom of the evaporator shell; the water produced by condensation of the evaporator core 42 flows out through the drain 44 at the bottom of the evaporator case 41.

The evaporation cycle refrigeration device is integrally arranged in an equipment compartment below a cockpit floor 8.

The condensed water discharged from the evaporator drain port 44 flows to the condenser assembly 1 to dissipate heat.

The condensed air flow of the evaporation circulation refrigerating device enters from the fresh air inlets 9 at two sides of the equipment compartment and flows through the condenser assembly 1 to be discharged downwards.

Example 2. As shown in figure 1, the helicopter evaporation cycle refrigerating device is integrally arranged in the space below the floor of a helicopter cockpit 6, and a condenser assembly 1 is arranged at the bottom of a machine body through a hinge 2 and can be used as a maintenance access cover of a helicopter, so that the maintenance is facilitated.

Referring to fig. 2, when the internal equipment is maintained, the condenser assembly 1 is turned open by the hinge, and a maintenance person enters the maintenance passage to maintain the internal equipment.

The evaporator assembly 3 is arranged right above the condenser assembly 1, condensed water in the evaporator assembly 3 can drip onto the condenser assembly 1 through the drain hole under the action of gravity, the condensed water is drained outside the machine after absorbing heat, a drain pipe is not required to be arranged, and the refrigerant is cooled on the condenser by utilizing the condensed water, so that the refrigeration efficiency is improved.

The air inlets are arranged on two sides of the helicopter body, the landing gear is fully utilized for opening holes, condensed air flows enter from fresh air inlets 9 on two sides of the helicopter body and are discharged downwards from the bottom of the helicopter body through the condenser assembly 1, air resistance is low, power consumption of the fan can be effectively reduced, an air channel does not need to be additionally arranged, and space and cost are saved.

The compressor 2 is arranged above one side of the hinge of the condenser assembly nearby, and the refrigerant pipeline can be directly connected with the evaporator assembly 4, the compressor 3 and the condenser assembly 1, so that the refrigerant pipeline can be greatly shortened.

As shown in fig. 3, the warming assembly 10 and the refrigeration device share an air distribution pipeline, the evaporator housing 41 is a part of the air distribution pipeline, and when the refrigeration device needs to be removed due to weight reduction of the helicopter, as shown in fig. 4, a plurality of evaporator core mounting brackets 43 are fixed in the evaporator housing 41, the evaporator core 42 can enter from a mounting port below the evaporator housing 41 and is fixed by the evaporator core mounting brackets 43, and a refrigerant pipeline interface is arranged at the bottom of the evaporator housing 43, so that the evaporator core can be quickly mounted and dismounted.

Having described the principles and embodiments of this invention, it is noted that numerous modifications and variations can be made without departing from the principles of the invention, but these modifications and variations fall within the scope of the invention as claimed.

Claims

1. An evaporation cycle refrigeration device integrated with a maintenance channel is characterized in that an outlet of a condenser assembly (1) is connected with a refrigerant inlet end of an evaporator assembly (4), a refrigerant outlet end of the evaporator assembly (4) is connected with an inlet end of a compressor (3), and an outlet end of the compressor (3) is connected with an inlet end of the condenser assembly (1); an inlet and an outlet of the air end of the evaporator component (4) are respectively connected with a return air inlet (7) and an air supply outlet (5) in a cockpit (6), and the condenser component (1) is arranged on a maintenance channel at the bottom of an equipment cabin through a hinge (2) and is used as a maintenance opening cover; the cockpit and the equipment cabin are separated from the floor (8) through the cockpit.

2. The evaporative cycle refrigeration unit integrated with the service aisle of claim 1, characterized by the compressor (3) being disposed proximate to the hinge (2) side of the condenser assembly (1).

3. The evaporative cycle refrigeration unit integrated with the service aisle of claim 1, characterized by the drain (44) of the evaporator assembly (4) being located above the condenser assembly (1).

4. The evaporative cycle cooling device integrated with a service aisle of claim 1, wherein fresh air inlets (9) are further provided on both sides of the equipment compartment; when the air conditioner works, external air enters from the fresh air inlets (9) at two sides and is discharged downwards through the condenser assembly (1).

5. The evaporative cycle cooling device integrated with a service aisle of claim 3, wherein the evaporator assembly (4) comprises an evaporator housing (41), an evaporator core (42), an evaporator core bracket (43) and a drain (44), the evaporator core (42) is connected inside the evaporator housing (41) through the evaporator core bracket (43), and the evaporator core is quickly detachable from the bottom of the evaporator housing; water generated by condensation of the evaporator core (42) flows out through a water outlet (44) at the bottom of the evaporator shell (41).

6. The evaporative cycle cooling device integrated with a service aisle of claim 1, characterized by being integrally disposed within an equipment compartment below the cockpit floor (8).

7. Use of an evaporative cycle cooling device integrated with a service aisle according to claim 3, characterized in that the condensed water discharged from the evaporator drain (44) flows to the condenser module (1) for heat dissipation.

8. Use of an evaporative cycle cooling device integrated with a service aisle according to claim 4, characterised in that the condensed air flow enters from fresh air inlets (9) on both sides of the equipment compartment and flows through the condenser module (1) and is discharged downwards.