A new air-cooled liquid cooling unit

Abstract

The utility model discloses a novel air -cooled liquid cooling unit, including totally enclosed scroll compressor, air -cooled condenser, liquid accumulator, electromagnetic valve, drying filter, liquid mirror, thermal expansion valve, plate evaporator, circulating pump, water tank, fluorine pump, pressure controller and electric control box, the totally enclosed scroll compressor is connected through the exhaust pipe between air -cooled condenser, through the double drive mode of integration totally enclosed scroll compressor and fluorine pump, adopt efficient totally enclosed scroll compressor and plate heat exchanger, and equip perfect auxiliary control component, realize a set of advanced refrigeration solution of integrated high -efficient energy -conserving, stable operation, safe and reliable, strong adaptability, namely cut into fluorine pump in the liquid supply pipeline, and totally enclosed scroll compressor stops under low ambient temperature, starts fluorine pump, and liquid freon circulates between indoor and outdoor heat exchanger and realizes exchange.

Description

Technical Field

[0001] This utility model specifically relates to a novel air-cooled liquid-cooled unit. Background Technology

[0002] Ship energy storage equipment and other electrical equipment generate a lot of heat during operation, as well as heat seeping into the ship's compartments due to the high ambient temperature in summer. If the heat is not dissipated in a timely manner in the enclosed space, it will pose a threat to the safe operation of the equipment in the compartments.

[0003] Conventional air-cooled and liquid-cooled chiller units still require compressor compression refrigeration when ambient temperatures are low in autumn and winter. To ensure the effectiveness of the refrigeration cycle during winter operation, exhaust pressure regulating valves and liquid storage pressure regulating valves are usually added to the refrigeration system, resulting in increased equipment investment and increased power consumption. Forced operation of mechanical compression refrigeration at low ambient temperatures leads to significant energy waste and is no longer suitable for the requirements of today's low-carbon economy. Therefore, existing refrigeration units cannot dissipate heat in time during summer operation to effectively provide the refrigerant temperature required by the controlled compartment equipment. Moreover, the energy efficiency ratio of the unit is significantly reduced during winter operation, which reduces the economic efficiency of the unit operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of air-cooled and liquid-cooled unit for ships.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel air-cooled liquid-cooled chiller unit includes a fully enclosed scroll compressor, an air-cooled condenser, a condensing fan, a liquid receiver, a solenoid valve, a dryer filter, a sight glass, a thermostatic expansion valve, a plate evaporator, a circulating pump, and a water tank. The fully enclosed scroll compressor and the air-cooled condenser are connected via an exhaust pipe. The novel air-cooled liquid-cooled chiller unit also includes a pressure controller for monitoring the unit's pressure and an electrical control box for controlling the operation of the entire unit. A refrigerant pump is also connected in the pipeline between the thermostatic expansion valve and the solenoid valve.

[0006] Preferably, one or more condensing fans are provided and are installed at equal intervals on the air-cooled condenser, and the air-cooled condenser is connected to the liquid receiver via a connecting pipe.

[0007] Preferably, the liquid reservoir is connected to the thermal expansion valve in sequence via a dryer filter, a sight glass, and a solenoid valve.

[0008] Preferably, the thermal expansion valve is connected to the plate evaporator.

[0009] Preferably, the circulating pump is connected to a plate evaporator and a water tank storing ethylene glycol refrigerant.

[0010] Preferably, check valves are connected to the intake and exhaust pipes before and after the fully enclosed scroll compressor.

[0011] The beneficial effects of this utility model are as follows: The unit has a compact structure. By integrating a fully enclosed scroll compressor and a refrigerant pump in a dual-drive mode, employing a high-efficiency fully enclosed scroll compressor and a plate heat exchanger, and equipped with complete auxiliary and control components, it achieves an advanced refrigeration solution that integrates high efficiency and energy saving, stable operation, safety and reliability, and strong adaptability. In summer, the heat in the cabin is absorbed by evaporation in the plate evaporator. After the fully enclosed scroll compressor draws in gas and compresses it to a high temperature and high pressure, the gas is condensed and released into the atmosphere in the air-cooled condenser. Meanwhile, the refrigerant pump is connected to the liquid supply line. In winter or spring and autumn low-temperature environments, the fully enclosed scroll compressor stops, and the refrigerant pump starts. The low-temperature refrigerant in the air-cooled condenser is pumped to the plate evaporator. After absorbing heat from the cabin in the evaporator, the heat is then sent to the condenser for cooling or condensation. In this way, the heat from the cabin is released to the external environment through the condenser. Liquid Freon circulates between the indoor and outdoor heat exchangers to achieve heat exchange. The unit consumes little power during the Freon pump circulation. It avoids the mechanical losses of compression refrigeration in low-temperature environments, significantly reduces the system's operating energy consumption, greatly improves heat exchange efficiency, achieves high efficiency and energy saving, and is more adaptable to cold regions. Through the operation of this device, while effectively controlling the refrigerant temperature required by the cabin equipment, the unit's energy efficiency ratio is increased several times during winter operation. The unit operates smoothly, and the frequent starting of the compressor when there is no compression refrigeration extends the service life of the equipment and greatly improves the economic efficiency of the unit operation. Attached Figure Description

[0012] Figure 1 This is a front view of a novel air-cooled liquid-cooled unit according to this utility model; Figure 2 for Figure 1 Side view. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0014] Example like Figure 1-2 As shown, a novel air-cooled liquid-cooled chiller unit includes a fully enclosed scroll compressor 1, an air-cooled condenser 5, a condensing fan 6, a solenoid valve 17, a liquid receiver 16, a dryer filter 11, a sight glass 13, a thermal expansion valve 14, a plate evaporator 15, a circulating pump 23, a water tank 19, and a refrigerant pump 8. The fully enclosed scroll compressor 1 and the air-cooled condenser 5 are connected by an exhaust pipe. The novel air-cooled liquid-cooled chiller unit also includes a pressure controller 2 for monitoring the unit pressure and an electrical control box 10 for controlling the operation of the entire unit.

[0015] It should be further explained that this new air-cooled and liquid-cooled unit integrates a traditional compressor-driven cycle and a refrigerant pump-driven cycle. When the ambient temperature is low or the system load is low, it can switch to the refrigerant pump cycle mode. The power consumption of the refrigerant pump 8 is much lower than that of the fully enclosed scroll compressor 1, which can significantly reduce the system's operating energy consumption and achieve the goal of high efficiency and energy saving. In addition, the use of the thermostatic expansion valve 14 can automatically and accurately adjust the flow rate according to the load changes of the plate evaporator 15, so that the plate evaporator 15 is always kept in the optimal working condition, thereby improving the heat exchange efficiency.

[0016] There is one or more condenser fans 6, which are installed at equal intervals on the air-cooled condenser 5. When the condenser fan 6 is started, it draws out the air inside the unit and discharges it. After the air inside the unit is drawn out, the outside air enters the unit from both sides, passes through the air-cooled condenser 5 and takes away the heat of the air-cooled condenser 5, and is finally drawn out by the condenser fan 6.

[0017] The air-cooled condenser 5 is connected to the liquid storage tank 16 via a connecting pipe, and is used to transport the condensed room temperature high pressure Freon liquid to the liquid storage tank 16 for storage.

[0018] The liquid receiver 16 is connected to the thermostatic expansion valve 14 via a dryer filter 11, a sight glass 13, and a solenoid valve 17. This allows high-pressure, room-temperature Freon liquid to be supplied to the thermostatic expansion valve 14 for throttling. Specifically, the pressure controller 2 monitors the unit's operating pressure in real time and automatically starts or stops the equipment in case of abnormal pressure, preventing overpressure or underpressure operation and protecting core components from damage. The solenoid valve 17 is used to cut off or connect the pipeline, working in conjunction with the pressure controller 2 to achieve precise flow control and safety interlocking.

[0019] The thermal expansion valve 14 is connected to the plate evaporator 15 and is used to send the low-pressure gas-liquid two-phase flow Freon after being throttled by the thermal expansion valve 14 to the plate evaporator 15 for evaporation and heat absorption.

[0020] It should be further explained that the liquid receiver 16 is used to balance the flow fluctuations of the refrigerant and ensure that the Freon liquid supplied to the thermostatic expansion valve 14 is continuous and stable; the dryer filter 11 can effectively remove moisture and impurities in the system and prevent ice blockage and dirt blockage; the sight glass 13 facilitates daily maintenance and allows for direct inspection of the Freon liquid humidity and flow status. The above components together ensure the long-term reliability of the new air-cooled liquid-cooled unit.

[0021] The circulating pump 23 is connected to the plate evaporator 15 and the water tank 19 for storing ethylene glycol refrigerant. It is used to send the ethylene glycol refrigerant stored in the water tank 19 to the surface of the plate evaporator 15 for cooling, and to transport the cooled ethylene glycol refrigerant to the ship cabin equipment for cooling in order to maintain the required temperature of the equipment.

[0022] It should be further explained that the plate evaporator 15 exchanges heat with the ethylene glycol solution, and then the circulating pump 23 delivers the cooled ethylene glycol to the equipment for further cooling. This indirect cooling method isolates the refrigeration system from the final cooling equipment, so even if a leak occurs in the refrigeration piping, it will not directly affect the ship's cabin equipment being cooled. Moreover, the plate evaporator 15 has the advantages of high heat transfer efficiency, compact structure, and small size, making it suitable for installation and use on ships.

[0023] The low-temperature refrigerant gas evaporated in the plate evaporator 15 is then drawn away by the fully enclosed scroll compressor 1 to maintain a low-pressure environment for the evaporation system. Thus, a refrigeration cycle system is formed through the intake and compression of the fully enclosed scroll compressor 1, the condensation of the air-cooled condenser 5, the throttling of the thermal expansion valve 14, and the evaporation process of the plate evaporator 15.

[0024] The refrigerant pump 8 is connected to the pipeline between the thermostatic expansion valve 14 and the solenoid valve 17, and is used to drive the refrigerant circulation under specific conditions.

[0025] In this embodiment, check valves need to be connected in the suction and discharge pipes before and after the fully enclosed scroll compressor 1 to prevent the backflow of ethylene glycol refrigerant when switching the refrigerant pump 8. Therefore, when the new air-cooled liquid-cooled unit is running and the ambient temperature is below 15°C, the fully enclosed scroll compressor 1 stops and the refrigerant pump 8 starts. Since the temperature of the equipment inside the chamber is high and the ambient temperature outside is low, the refrigerant liquid circulates between the plate evaporator 15 and the air-cooled condenser 5 using the principle of natural cooling. The circulation of the refrigerant pump realizes the transfer of heat from the equipment inside the chamber to the external environment, thereby greatly reducing energy consumption, reducing the service life of the refrigeration compressor, and extending the service life of the original unit.

[0026] In summary, by integrating a fully enclosed scroll compressor and a refrigerant pump into a dual-drive mode, employing a high-efficiency fully enclosed scroll compressor and plate heat exchanger, and equipping it with comprehensive auxiliary and control components, an advanced refrigeration solution integrating high efficiency and energy saving, stable operation, safety and reliability, and strong adaptability has been achieved. Specifically, the refrigerant pump is connected to the liquid supply line, the fully enclosed scroll compressor stops at low ambient temperatures, and the refrigerant pump starts, with liquid refrigerant circulating between the indoor and outdoor heat exchangers to achieve heat exchange.

[0027] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A novel air-cooled liquid-cooled chiller unit, comprising a fully enclosed scroll compressor, an air-cooled condenser, a condensing fan, a liquid receiver, a solenoid valve, a dryer filter, a sight glass, a thermal expansion valve, a plate evaporator, a circulating pump, and a water tank; wherein the fully enclosed scroll compressor and the air-cooled condenser are connected via an exhaust pipe, characterized in that, The new air-cooled and liquid-cooled unit also includes a pressure controller for monitoring the unit pressure and an electrical control box for controlling the operation of the entire unit; a fluorine pump is also connected in the pipeline between the thermal expansion valve and the solenoid valve.

2. The novel air-cooled liquid-cooled chiller unit according to claim 1, characterized in that, One or more condensing fans are provided and are installed at equal intervals on the air-cooled condenser. The air-cooled condenser is connected to the liquid receiver via a connecting pipe.

3. The novel air-cooled liquid-cooled chiller unit according to claim 1, characterized in that, The liquid reservoir is connected to the thermal expansion valve in sequence via a dryer filter, a sight glass, and a solenoid valve.

4. A novel air-cooled liquid-cooled chiller unit according to claim 1, characterized in that, The thermal expansion valve is connected to the plate evaporator.

5. A novel air-cooled liquid-cooled chiller unit according to claim 1, characterized in that, The circulating pump is connected to the plate evaporator and the water tank storing ethylene glycol refrigerant.

6. A novel air-cooled liquid-cooled chiller unit according to claim 1, characterized in that, Check valves are connected to the intake and exhaust pipes before and after the fully enclosed scroll compressor.

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