A novel water-saving circulating humidification system

Abstract

This utility model relates to a novel water-saving circulating humidification system. A first liquid level sensor and a temperature sensor are installed inside the circulating water tank, and a second liquid level sensor is installed inside the water collection tray. A humidification pump is connected to a wet film humidifier via a flow sensor. A water supply pipe with a water supply pump is connected outside the circulating water tank. A heat exchange jacket is installed on the outer wall of the circulating water tank. The inlet and outlet of the heat exchange jacket are connected to inlet and outlet three-way valves. Based on the temperature of the air supplied via the evaporator or electric heating for cooling or heating, the inlet three-way valve can be switched to perform heat exchange heating / preheating and heat exchange cooling on the freshwater circulating in the circulating water tank and water collection tray. This can control the freshwater temperature above the wet-bulb temperature of the air, effectively improving the evaporation rate and ensuring the full and efficient utilization of freshwater resources.

Description

Technical Field

[0001] This utility model relates to an air conditioning system, specifically a novel water-saving circulating humidification system within an air conditioner. Background Technology

[0002] In the use of air conditioning in environments such as long-distance ships and offshore platforms, the requirements for air humidification performance in cabins are increasing. Most air conditioning humidification systems use wet film materials to mix fresh water. However, the use of fresh water resources on ships and offshore platforms is usually strictly controlled. In existing air conditioning humidification systems, there are two ways to deal with the fresh water that does not evaporate from the wet film material: one is to discharge it directly or use it as rinsing water with low water quality requirements, which is a serious waste of fresh water resources; the other is to collect it and return it to the water tank for humidification and reuse. However, the fresh water is polluted, and recycling it greatly affects the performance of the wet film material. At the same time, when the low-temperature or high-temperature air is sent to the wet film material by the evaporator or heater, the amount of fresh water evaporating from the wet film material with the low-temperature or high-temperature air is limited due to the fresh water temperature and flow rate. This results in a large amount of fresh water not being fully evaporated, which is a serious waste of fresh water resources. Summary of the Invention

[0003] This invention provides a novel water-saving circulating humidification system with a simple structure that can effectively improve the evaporation performance of wet film materials and make full use of freshwater resources.

[0004] The technical solution adopted by this utility model is as follows: a novel water-saving circulating humidification system, including a circulating water tank, which is connected to the evaporator and the water sprayer inside the electrically heated wet film humidifier via a humidification pump. A water collection tray is set below the wet film material inside the wet film humidifier, and the water collection tray is connected to the circulating water tank via a circulating pump. The system is characterized in that: a first liquid level sensor and a temperature sensor are installed in the circulating water tank, a second liquid level sensor is installed in the water collection tray, the humidification pump is connected to the wet film humidifier via a flow sensor, a water supply pipe with a water supply pump is connected to the outside of the circulating water tank, the first and second liquid level sensors, the humidification pump, the flow sensor, and the water supply pipe are connected to a humidification controller, a heat exchange jacket is set on the outer wall of the circulating water tank, and inlet and outlet of the heat exchange jacket are connected to inlet and outlet three-way valves. One end of the inlet three-way valve is connected to the load return pipe from the evaporator to the heat exchanger, and the other end of the inlet three-way valve is connected to the load inlet pipe from the heat exchanger to the evaporator. The two ends of the outlet three-way valve are respectively connected to the load inlet and return pipes.

[0005] The circulating water tank is equipped with a dosing tank, and the water collection tray is also connected to a drain valve.

[0006] The circulating pump also delivers water to the circulating water tank via a filter.

[0007] The inlet of the heat exchange jacket is connected to the outlet of the water-cooled condenser of the compressor refrigeration system, and the outlet of the water-cooled condenser is directly discharged.

[0008] The inlet and outlet three-way valves are replaced with straight-through valves, and the inlet and outlet of the heat exchange jacket are connected between the heat exchanger of the compressor refrigeration system and the compressor return gas, or connected to the compressor discharge adjustable pipeline of the compressor refrigeration system.

[0009] The humidifying pump is a booster pump. The beneficial effects of this invention are:

[0010] 1. When using the wet membrane material, by monitoring the first and second liquid level sensors and the flow sensor, under the condition of constant flow, if the liquid level rise rate of the second liquid level sensor is higher than the liquid level fall rate of the first liquid level sensor, then the wet membrane material can be cleaned as needed. The water supply to the circulating water tank can be shut off. When the first liquid level sensor detects a low point, ensuring that the fresh water in the circulating water tank meets the required dosage for cleaning, the wet membrane material is cleaned by the water sprayer supplied by the circulating water tank after adding chemicals. The cleaning water is discharged from the drain valve. During cleaning, the water collection tray and circulating pump can also be used to spray the wet membrane material multiple times to ensure thorough cleaning. After cleaning, the circulating water tank is emptied, and fresh water is replenished to continue humidification. This system can automatically and periodically monitor and clean the performance of the wet membrane material, ensuring its service life and humidification performance.

[0011] 2. When humidification is required, the liquid inlet three-way valve can be switched according to the temperature of the air supplied through the evaporator or electric heating for cooling or heating. This allows for heat exchange heating and preheating of the fresh water circulating in the circulating water tank and collection pan, as well as heat exchange cooling. The fresh water temperature can be controlled above the wet-bulb temperature of the air, effectively improving the evaporation rate. When the liquid inlet three-way valve is connected to the load return and liquid inlet pipes, it can also dynamically match the liquid inlet heat exchange jackets with different openings on both sides, thereby avoiding excessively high or low water temperatures. This balances improving the evaporation rate and reducing the impact on the temperature of the supplied air, comprehensively ensuring energy-saving control of fresh water. Attached Figure Description

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

[0013] Figure 1 In the middle section: 1. Evaporator, 2. Load return pipe, 3. Load inlet pipe, 4. Electric heater, 5. Wet film material, 6. Sprinkler, 7. Water collection tray, 8. Drain valve, 9. Second liquid level sensor, 10. Circulation pump, 11. Filter, 12. Circulation water tank, 13. Makeup water pipe, 14. Makeup water pump, 15. Chemical dosing tank, 16. Temperature sensor, 17. First liquid level sensor, 18. Humidification pump, 19. Flow sensor, 20. Heat exchange jacket, 21. Inlet three-way valve, 22. Outlet three-way valve, 23. Controller, 24. Heat exchanger. Detailed Implementation

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

[0015] Figure 1As shown: A novel water-saving circulating humidification system includes a wet film material 5, a water sprayer 6, a water collection tray 7, a drain valve 8, a second liquid level sensor 9, a circulating pump 10, a filter 11, a circulating water tank 12, a water supply pipe 13, a water supply pump 14, a chemical dosing tank 15, a temperature sensor 16, a first liquid level sensor 17, a humidification pump 18, a flow sensor 19, a heat exchange jacket 20, an inlet three-way valve 21, an outlet three-way valve 22, and a controller 23.

[0016] The wet film material 5 of this system is located after the evaporator 1 and the electric heater 4. The return liquid pipe 2 of the refrigerant sent by the evaporator 1 to the heat exchanger of the compression refrigeration system is connected to the load return liquid pipe 2. The refrigerant inlet pipe 3 of the heat exchanger of the compression refrigeration system is connected to the evaporator 1.

[0017] A water sprayer 6 is installed above the wet film material 5. Water is supplied from the circulating water tank 12 via the flow sensor 19 and the humidification pump 18. A water collection tray 7 is installed below the wet film material 5. The water collection tray 7 is equipped with a second liquid level sensor 9 and an external drain valve 8. Water is supplied from the water collection tray 7 via the circulating pump 10 and the filter 11 to the circulating water tank 12. The circulating water tank 12 is equipped with a first liquid level sensor 17 and a temperature sensor 16. A chemical dosing tank 15 and a water supply pipe 13 with a water supply pump 14 are connected to the circulating water tank 12. The first and second liquid level sensors, the humidification pump, the flow sensor, the water supply pump, and the temperature sensor are connected to the humidification controller 23.

[0018] A heat exchange jacket 20 is installed on the outer wall of the circulating water tank 12. The inlet of the heat exchange jacket 20 is connected to the first path of the liquid inlet three-way valve 21. The second path of the liquid inlet three-way valve 21 is connected to the load return pipe 2, which is the return liquid connection from the evaporator 1 to the heat exchanger 24. The third path of the liquid inlet three-way valve 21 is connected to the load inlet pipe 3, which is the inlet liquid connection from the heat exchanger to the evaporator 1. The outlet of the heat exchange jacket 20 is connected to the first path of the liquid outlet three-way valve 22. The second path of the liquid outlet three-way valve 22 is connected to the heat exchanger. The third path of the liquid outlet three-way valve 22 is connected to the evaporator 1.

[0019] In this embodiment, the inlet and outlet three-way valves of the heat exchange jacket 20 switch between high-temperature and low-temperature heat exchange preheating or precooling of fresh water. Similarly, it can be replaced by using a water-cooled condenser of a compression refrigeration system connected to the heat exchange jacket 20 for heat exchange. The switching valve can be used to switch between connecting to the outlet of the water-cooled condenser when high temperature is required and connecting between the external water supply and the water-cooled condenser when low temperature is required. When the external seawater temperature is lower than the ship's freshwater resources, a low-temperature supply can be provided.

[0020] Similarly, it can be replaced by supplying only high-temperature heat exchange preheating fresh water to the heat exchange jacket 20, and connecting the inlet and outlet liquid of its heat exchange jacket to the pipeline of the compression refrigeration system; similarly, the three-way valve in this embodiment can be connected to the pipeline, and replaced by a refrigerant water tank connected to the load inlet pipe and the load return pipe.

Claims

1. A novel water-saving circulating humidification system, comprising a circulating water tank, wherein water from the circulating water tank is pumped by a humidification pump to a water sprayer inside an evaporator and an electrically heated wet film humidifier, and a water collection tray is disposed below the wet film material inside the wet film humidifier, wherein water from the water collection tray is pumped by a circulating pump to the circulating water tank, characterized in that: The circulating water tank is equipped with a first liquid level sensor and a temperature sensor, and the water collection tray is equipped with a second liquid level sensor. The humidification pump is connected to the wet film humidifier via a flow sensor. The circulating water tank is connected to a water supply pipe with a water supply pump. The first and second liquid level sensors, the humidification pump, the flow sensor, and the water supply pipe are connected to the humidification controller. The outer wall of the circulating water tank is equipped with a heat exchange jacket. The inlet and outlet of the heat exchange jacket are connected to inlet and outlet three-way valves. One end of the inlet three-way valve is connected to the load return pipe from the evaporator to the heat exchanger, and the other end of the inlet three-way valve is connected to the load inlet pipe from the heat exchanger to the evaporator. The two ends of the outlet three-way valve are connected to the load inlet and return pipes, respectively.

2. The novel water-saving circulating humidification system according to claim 1, characterized in that: The circulating water tank is equipped with a dosing tank, and the water collection tray is also connected to a drain valve.

3. The novel water-saving circulating humidification system according to claim 1, characterized in that: The circulating pump also delivers water to the circulating water tank via a filter.

4. The novel water-saving circulating humidification system according to claim 1, characterized in that: The inlet of the heat exchange jacket is connected to the outlet of the water-cooled condenser of the compressor refrigeration system, and the outlet of the water-cooled condenser is directly discharged.

5. The novel water-saving circulating humidification system according to claim 1, characterized in that: The inlet and outlet three-way valves are replaced with straight-through valves, and the inlet and outlet of the heat exchange jacket are connected between the heat exchanger of the compressor refrigeration system and the compressor return gas, or connected to the compressor discharge adjustable pipeline of the compressor refrigeration system.

6. The novel water-saving circulating humidification system according to claim 1, characterized in that: The humidifying pump is a booster pump.

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