Low-vibration-noise distributed direct-current air conditioning system

Abstract

The utility model relates to a distributed direct current air conditioning system with low vibration noise, which comprises a refrigerating unit and a cabin coil pipe, the refrigerating unit comprises an electric scroll compressor and a double-pipe condenser, the electric scroll compressor and the double-pipe condenser are arranged on an upper bottom plate, the upper bottom plate is arranged on a lower bottom plate through a plurality of first-level shock absorbers, and the cabin coil pipe is arranged on the lower bottom plate through a plurality of second-level shock absorbers. The lower bottom plate is mounted on a ship through a plurality of secondary shock absorbers; the primary shock absorbers and the secondary shock absorbers are uniformly distributed around the circumference and are staggered by 45 degrees in the circumferential direction; the in-cabin coil pipe comprises a coil pipe box body and an evaporator, the evaporator is horizontally or obliquely arranged in the coil pipe box body, the refrigerating unit is connected into the coil pipe box body from one side edge to the evaporator through a hose, an air inlet is reserved above the evaporator, a filter screen is arranged on the air inlet, an air outlet is formed in the other side of the coil pipe box body, and an oblique flow fan is arranged on the air outlet. The structure is compact, the influence of compression refrigeration vibration and noise can be effectively reduced, long-time energy-saving stable operation is guaranteed, coil pipe adaptive cabin small-size installation is considered, and efficient and stable air supply is achieved.

Description

Technical Field

[0001] This utility model relates to an air conditioning system, specifically a low-vibration and noise distributed DC air conditioning system. Background Technology

[0002] Currently, the air conditioners used on ships are mostly cabinet-type and split-type, which consume a large amount of electricity to operate, especially during navigation when they need to work continuously, increasing the ship's energy consumption and operating costs. They also occupy a significant amount of space inside the ship, limiting the effective use of cabin space. The refrigeration system and indoor air distribution room of marine air conditioners have a distributed structure, with the outdoor refrigeration system being electrically driven, requiring a large amount of electricity to support its normal operation. Furthermore, the use of compressor-based refrigeration systems results in significant vibration and noise from the compressors, and the vertically installed evaporators within the coils occupy considerable cabin space. Summary of the Invention

[0003] This invention provides a low-vibration and low-noise distributed DC air conditioning system that features a compact structure, effectively reduces the impact of compression refrigeration vibration and noise, ensures long-term energy-saving and stable operation, and takes into account the small-volume installation of the coil in the cabin and efficient and stable air supply.

[0004] The technical solution adopted by this utility model is: a low-vibration and noise distributed DC air conditioning system, including a refrigeration unit and an in-cabin coil. The refrigeration unit is externally connected to the in-cabin coil. The refrigeration unit includes an electric scroll compressor and a shell-and-tube condenser. The electric scroll compressor and the shell-and-tube condenser are mounted on an upper base plate. The upper base plate is mounted on a lower base plate via multiple primary shock absorbers. The lower base plate is mounted on the ship via multiple secondary shock absorbers. The primary and secondary shock absorbers are evenly distributed around the circumference and staggered by 45 degrees. The in-cabin coil includes a coil housing and an evaporator. The evaporator is horizontally or inclinedly arranged in the coil housing. The refrigeration unit is connected to the coil housing and the evaporator from one side via a flexible hose. An air inlet is provided above the evaporator, and a filter screen is provided on the air inlet. An air outlet is provided on the other side of the coil housing, and a diagonal flow fan is provided on the air outlet.

[0005] The primary shock absorber uses a BE15 shock absorber, and the secondary shock absorber uses a BE25 shock absorber.

[0006] An air inlet is provided on the upper part of one side of the coil box, and an evaporator is provided below the air inlet. The outer side of the above-mentioned side is connected to the refrigeration unit, and an air outlet is provided on the other side of the coil box opposite to the side connected to the refrigeration unit.

[0007] The evaporator is equipped with a water pan underneath.

[0008] The water tray is fully distributed at the bottom of the coil box.

[0009] The water tray is the bottom of the coil box.

[0010] The electric scroll compressor is connected to a shell-and-tube condenser via an exhaust filter. The shell-and-tube condenser is connected to a coil housing via a first check valve, a dryer filter, a liquid delivery solenoid valve, an expansion valve, and a second check valve. The coil housing is connected to the electric scroll compressor via a third check valve and a return gas filter.

[0011] The exhaust filter, first check valve, dryer filter, liquid delivery solenoid valve, expansion valve, second check valve, and third check valve are mounted on the bottom plate.

[0012] The beneficial effects of this utility model are as follows: It uses an electric scroll compressor, employing a double-scroll structure to complete gas compression, resulting in high efficiency. At the same compression ratio, compared to screw compressors and piston compressors, the electric scroll compressor achieves higher adiabatic efficiency, resulting in significant energy savings. Simultaneously, it has a higher compression ratio and smaller size, making it suitable for compact equipment. The electric scroll compressor operates with less noise, minimizing noise pollution to the surrounding environment, achieving vibration reduction and noise reduction. Furthermore, the electric scroll compressor can automatically adjust the appropriate discharge volume and compression ratio by controlling the motor speed to achieve optimal energy savings. Compared to traditional servo compressors, the variable frequency compressor avoids energy waste caused by start-stop cycles, enabling long-term stable operation and thus maximizing energy savings. The coil housing outlet uses a diagonal flow fan design, resulting in higher air pressure, larger air volume, higher efficiency, and a wide high-efficiency operating range. Simultaneously, its low noise during operation makes it suitable for use in locations requiring a quiet environment. Moreover, the diagonal flow fan combined with the horizontally mounted evaporator results in a compact overall coil housing structure, occupying little space and facilitating installation. The refrigeration unit adopts a double-base design. The electric scroll compressor and the shell-and-tube condenser are installed on the upper base plate. The upper base plate is fixed to the lower base plate by four BE15 vibration dampers, and the lower base plate is fixed inside the ship by four BE25 vibration dampers, achieving dual-stage vibration reduction and comprehensively ensuring the vibration reduction and noise reduction of the refrigeration unit during installation and use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the refrigeration unit of this utility model.

[0015] In the diagram: Refrigeration unit 1, electric scroll compressor 2, exhaust filter 3, shell-and-tube condenser 4, first check valve 5, dryer filter 6, liquid delivery solenoid valve 7, expansion valve, second check valve 9, coil housing 10, air inlet 11, filter screen 12, evaporator 13, water pan 14, air outlet 15, diagonal flow fan 16, third check valve 17, return air filter 18, upper base plate 19, BE15 vibration damper 20, lower base plate 21, BE25 vibration damper 22. Detailed Implementation

[0016] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0017] Figure 1 As shown: A low-vibration and noise distributed DC air conditioning system includes a refrigeration unit 1 and a coil housing 10 inside the cabin. The refrigeration unit includes an electric scroll compressor 2, an exhaust filter 3, a coaxial condenser 4, a first check valve 5, a dryer filter 6, a liquid delivery solenoid valve 7, an expansion valve, a second check valve 9, a third check valve 17, and a return gas filter 18. The electric scroll compressor 2 is connected to the coaxial condenser 4 via the exhaust filter 3. The coaxial condenser 4 is connected sequentially via the first check valve 5, the dryer filter 6, and the liquid delivery solenoid valve 7. Solenoid valve 7, expansion valve 8, and second check valve 9 are connected to coil housing 10. Coil housing 10 is connected to electric scroll compressor 2 via third check valve 17 and return air filter 18. Evaporator 13 is installed horizontally or inclined inside coil housing 10. The refrigeration unit is connected to coil housing 10 to evaporator 13 via a hose from one side. An air inlet 11 is provided above evaporator 13. A filter screen 12 is installed on air inlet 11. An air outlet 15 is provided on the other side of coil housing 10. A diagonal flow fan 16 is installed on air outlet 15.

[0018] In this embodiment, an air inlet is provided on the upper part of one side of the coil box, and an evaporator is provided below the air inlet. The outer side of the above-mentioned side is connected to the refrigeration unit, and an air outlet is provided on the other side of the coil box opposite to the side connected to the refrigeration unit.

[0019] In this embodiment, a water tray 14 is provided below the evaporator, and the water tray covers the bottom of the coil box. Preferably, the water tray is designed as the bottom of the coil box.

[0020] exist Figure 2 In this configuration, the electric scroll compressor 2 and the shell-and-tube condenser 4 are mounted on the upper base plate 19. The upper base plate 19 is supported by four BE15 vibration dampers 20 evenly distributed around its circumference on the lower base plate 21. The lower base plate 21 is supported on the ship by four BE25 vibration dampers 22 evenly distributed around its circumference. The BE15 and BE25 vibration dampers 20 are offset by 45 degrees around their circumference. This two-stage vibration damping system, mounted on the upper base plate, ensures the overall center of gravity remains centered through precise positioning; this technology is conventional.

Claims

1. A low-vibration, low-noise distributed DC air conditioning system, comprising a refrigeration unit and an in-cabin coil, wherein the refrigeration unit is externally connected to the in-cabin coil, characterized in that: The refrigeration unit includes an electric scroll compressor and a shell-and-tube condenser. The electric scroll compressor and the shell-and-tube condenser are mounted on an upper base plate. The upper base plate is mounted on a lower base plate via multiple primary shock absorbers. The lower base plate is mounted on the ship via multiple secondary shock absorbers. The primary and secondary shock absorbers are evenly distributed around the circumference and offset by 45 degrees. The in-cabin coil includes a coil housing and an evaporator. The evaporator is horizontally or inclinedly installed in the coil housing. The refrigeration unit is connected to the coil housing and the evaporator via a flexible hose from one side. An air inlet is provided above the evaporator, and a filter screen is installed on the air inlet. An air outlet is provided on the other side of the coil housing, and a diagonal flow fan is installed on the air outlet.

2. The low-vibration, low-noise distributed DC air conditioning system according to claim 1, characterized in that: The primary shock absorber uses a BE15 shock absorber, and the secondary shock absorber uses a BE25 shock absorber.

3. The low-vibration, low-noise distributed DC air conditioning system according to claim 1, characterized in that: An air inlet is provided on the upper part of one side of the coil box, and an evaporator is provided below the air inlet. The outer side of the above-mentioned side is connected to the refrigeration unit, and an air outlet is provided on the other side of the coil box opposite to the side connected to the refrigeration unit.

4. A low-vibration, low-noise distributed DC air conditioning system according to claim 1 or 3, characterized in that: The evaporator is equipped with a water pan underneath.

5. A low-vibration, low-noise distributed DC air conditioning system according to claim 4, characterized in that: The water tray is fully distributed at the bottom of the coil box.

6. A low-vibration, low-noise distributed DC air conditioning system according to claim 4, characterized in that: The water tray is the bottom of the coil box.

7. A low-vibration, low-noise distributed DC air conditioning system according to claim 1, characterized in that: The electric scroll compressor is connected to a shell-and-tube condenser via an exhaust filter. The shell-and-tube condenser is connected to a coil housing via a first check valve, a dryer filter, a liquid delivery solenoid valve, an expansion valve, and a second check valve. The coil housing is connected to the electric scroll compressor via a third check valve and a return gas filter.

8. A low-vibration, low-noise distributed DC air conditioning system according to claim 7, characterized in that: The exhaust filter, first check valve, dryer filter, liquid delivery solenoid valve, expansion valve, second check valve, and third check valve are mounted on the bottom plate.

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