Natural convection cooling type air conditioner water chilling unit

Abstract

The utility model relates to a natural convection cooling type air conditioner water chilling unit which comprises an evaporator and condensers, the condensers are tube plate type condensers, the two tube plate type condensers are arranged on the outer side of a ship board, and shell sides of the two tube plate type condensers are communicated with external seawater. Tube pass refrigerants of the two tube plate type condensers are connected with two independent tube passes of the evaporator in a branching mode after passing through a broadside isolating valve, and refrigerant water is connected into and out of a shell pass of the evaporator. The external condenser and seawater are adopted for natural convection cooling, double-tube-pass heat exchange refrigerant water of the evaporator lower than that of the condenser is supplied, the structure is simple, when the temperature of outboard seawater is lower than 10 DEG C and the heat load in the cabin is small, the refrigerant water of the compressor is not needed for cooling, and the advantages of energy conservation and noise reduction are achieved.

Description

Technical Field

[0001] This utility model relates to an air conditioning chiller unit, specifically a natural convection cooling air conditioning chiller unit. Background Technology

[0002] Currently, the air conditioning chiller units used on ships typically use compressors as the power source to complete the refrigeration cycle. Noise reduction measures are needed, such as using soundproof enclosures and applying insulation. Considering energy conservation, comparing various compressors, achieving the best energy-saving effect comes at an extremely high cost. In conclusion, air conditioning chiller units are somewhat lacking in energy-saving and noise-reduction considerations during the circulation process. Summary of the Invention

[0003] This utility model provides a natural convection cooling air conditioning chiller unit with a simple structure, energy saving, and noise reduction.

[0004] The technical solution adopted by this utility model is: a natural convection cooling air conditioning chiller unit, including an evaporator and a condenser, characterized in that: the condenser is a tube sheet condenser, the tube sheet condenser is set on the outside of the ship's hull, the shell side of the tube sheet condenser is connected to the external seawater, the tube side refrigerant of the tube sheet condenser is connected to the evaporator tube side through the hull side isolation valve, and the shell side of the evaporator is connected to and disconnected from the chilled water.

[0005] A natural convection cooling air conditioning chiller unit includes an evaporator and a condenser, characterized in that: the condenser is a tube sheet condenser, two tube sheet condensers are arranged on the outside of the ship's hull, the shell side of the two tube sheet condensers is connected to the external seawater, the refrigerant in the tube side of the two tube sheet condensers is connected to two independent tube sides of the evaporator after passing through the hull side isolation valve, and the middle of the shell side of the evaporator is connected to and disconnected from the chilled water.

[0006] The evaporator shell side is connected to the upper and lower parts for refrigerant water.

[0007] The evaporator has two independent tubes arranged symmetrically on the left and right sides, with each tube extending beyond the middle. The evaporator shell side has refrigerant water connected and disconnected at the middle.

[0008] The tube sheet condenser is inclinedly installed on the outside of the ship's hull.

[0009] The tube sheet condenser is mounted on the outside of the ship's hull via a mounting base, which is a rotatable and adjustable structure.

[0010] The tube sheet condenser is more than 10m higher than the evaporator.

[0011] This chiller unit allows the refrigerant to enter the evaporator, where it exchanges heat with the flowing chilled water. The liquid refrigerant vaporizes by absorbing heat, lowering the chilled water temperature before being supplied. Because the refrigerant pressure in the evaporator is higher than the pressure inside the tube sheet condenser outside the ship, the gaseous refrigerant, influenced by the pressure difference, enters the tube sheet condenser to exchange heat with seawater. The gaseous refrigerant liquefies, releasing heat to form liquid refrigerant, which then returns to the evaporator due to gravity. Combined with the double tube sheet condenser outside the ship, the evaporator is cooled from two directions, effectively meeting the cooling needs of the chilled water when the seawater temperature outside the ship is below 10°C and the heat load inside the cabin is low. This chiller unit eliminates the need for a compressor; the refrigerant exchanges heat naturally through the heat exchanger outside the ship via natural convection. The refrigerant, through the pressure difference and gravity, cycles continuously, completing the heat transfer and eliminating the need for a compressor power source, thus achieving energy saving and noise reduction. Attached Figure Description

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

[0013] In the diagram: 1. Ship side, 2. Tube sheet condenser, 3. Side isolation valve, 4. Evaporator, 5. Left tube side, 6. Right tube side, 7. Refrigerant water inlet pipe, 8. Refrigerant water outlet pipe. Detailed Implementation

[0014] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0015] Figure 1 As shown, a natural convection cooling air conditioning chiller unit includes a tube sheet condenser 2, a side isolation valve 3, an evaporator 4, a left tube side 5, a right tube side 6, a chilled water inlet pipe 7, and a chilled water outlet pipe 8.

[0016] Two tube sheet condensers 2 are located on the outside of the ship's hull. The shell side of the two tube sheet condensers 2 is connected to the external seawater. The refrigerant in the tube side of the two tube sheet condensers 2 is connected to the left and right tube sides 5 and 6 of the evaporator 4 after passing through the side isolation valve 3. The left and right tube sides 5 and 6 are two independent tube sides connected and disconnected in the evaporator. The left and right tube sides 5 and 6 are connected back to the two tube sheet condensers through the side isolation valve. The upper part of the shell side of the evaporator 4 is connected to the refrigerant water inlet pipe 7 and the lower part is connected to the refrigerant water outlet pipe 8.

[0017] In this embodiment, it is preferable that the left and right tubes of the evaporator extend beyond the middle position.

[0018] Based on this embodiment, the tube sheet condenser is inclinedly positioned on the outer side of the ship's hull, which facilitates airflow at sea. Furthermore, the tube sheet condenser is mounted on the outer side of the ship's hull via a mounting base, which is a rotatable and adjustable structure to allow for adjustment of the tilt angle with seawater flow, ensuring heat exchange efficiency.

[0019] Based on the above embodiments, the outboard tube sheet condenser is placed at a height ≥10m higher than the evaporator. Through the calculation of the resistance of the refrigeration piping system, the resistance of the liquid supply pipeline can overcome the influence of gravity, and the resistance of the return gas pipeline can overcome the influence of pressure difference, thus effectively realizing circulation.

Claims

1. A natural convection cooling air conditioning chiller unit, comprising an evaporator and a condenser, characterized in that: The condenser is a tube sheet condenser, which is located on the outside of the ship's hull. The shell side of the tube sheet condenser is connected to the external seawater, and the refrigerant in the tube side of the tube sheet condenser is connected to the evaporator tube side via a side isolation valve. The shell side of the evaporator is connected to and disconnected from the refrigerant water.

2. A natural convection cooling air conditioning chiller unit, comprising an evaporator and a condenser, characterized in that: The condenser is a tube sheet condenser, with two tube sheet condensers located on the outside of the ship's hull. The shell side of the two tube sheet condensers is connected to the external seawater. The refrigerant in the tube side of the two tube sheet condensers is connected to two independent tube sides of the evaporator after passing through the hull-side isolation valve. The shell side of the evaporator is connected to and disconnected from the refrigerant water.

3. The natural convection cooling air conditioning chiller unit according to claim 1 or 2, characterized in that: The evaporator shell side is connected to the upper and lower parts for refrigerant water.

4. The natural convection cooling air conditioning chiller unit according to claim 2, characterized in that: The evaporator has two independent tubes arranged symmetrically on the left and right, with each tube extending beyond the middle position.

5. The natural convection cooling air conditioning chiller unit according to claim 1 or 2, characterized in that: The tube sheet condenser is inclinedly installed on the outside of the ship's hull.

6. The natural convection cooling air conditioning chiller unit according to claim 1 or 2, characterized in that: The tube sheet condenser is mounted on the outside of the ship's hull via a mounting base, which is a rotatable and adjustable structure.

7. The natural convection cooling air conditioning chiller unit according to claim 1 or 2, characterized in that: The tube sheet condenser is more than 10m higher than the evaporator.

8. The natural convection cooling air conditioning chiller unit according to claim 4, characterized in that: The evaporator shell side is connected to and disconnected from the refrigerant water.

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