Automatic control device for water mist evaporation phase change cooling system at air inlet of air-cooled condenser
By installing an automatic control device at the air inlet of the air-cooled condenser, the problem of poor heat dissipation of the air-cooled condenser is solved by using water mist phase change cooling and a water purifier to prevent fin corrosion and scaling. This achieves high efficiency, energy saving, consumption reduction and extended equipment life.
Patent Information
- Application Number
- CN202423051468.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In commercial cold chain systems and central air conditioning systems, air-cooled condensers suffer from poor heat dissipation, resulting in reduced cooling efficiency, increased energy consumption, and long-term corrosion and scaling of the fins, which affects the lifespan of the equipment.
An automatic control device is used to atomize pure water into tiny particles through a high-pressure nozzle and spray them into the air inlet of the air-cooled condenser. The phase change of water is used to absorb heat and cool the condenser. A water purifier is used to prevent fin corrosion and scaling. The device includes components such as a controller, water purifier, water tank, water pump, and rain sensor to achieve automatic control and efficient cooling.
It improves the heat dissipation capacity of the air-cooled condenser, reduces energy consumption by 7%-15%, extends the service life of the equipment, avoids fin corrosion and scaling, and ensures stable operation of the equipment.
Smart Images
Figure CN223550681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air-cooled condenser technology, and in particular to an automatic control device for an air-cooled condenser inlet water mist evaporation phase change cooling system. Background Technology
[0002] Commercial areas are already prime real estate, so the limited installation locations of some commercial cold chain systems' air-cooled condensers, especially during the hot summer months, lead to poor heat dissipation. This results in insufficient cooling from the cold chain system or central air conditioning system, causing anything from significantly reduced cooling efficiency and increased energy consumption to high-pressure alarms and protective shutdowns, severely impacting the quality of frozen products and the comfort and customer experience of the commercial environment. To address this issue, some equipment owners have implemented measures such as adding water spray or misting cooling systems. However, these often lead to scale buildup clogging the fins after one or two years of use; or the incomplete vaporization of the sprayed water creates a weakly acidic environment that slowly corrodes the fins, causing them to oxidize and become brittle over time. This further reduces the heat dissipation capacity of the air-cooled condenser, severely affecting the equipment's lifespan. Utility Model Content
[0003] Addressing the issue of insufficient heat dissipation in existing commercial cold chain systems' air-cooled condensers, the purpose of this invention is to provide an automatic control device for the water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser. This device features a simple and reasonable structural design, stable and reliable operation, and relatively low installation costs, enabling efficient equipment operation, energy saving and consumption reduction, and extending the equipment's service life, thus demonstrating promising application prospects.
[0004] To achieve the above objectives, this utility model adopts the following technical solution:
[0005] An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, the automatic control device comprising an air-cooled condenser (1), a controller (2), a water purifier (4), and a water storage tank (6), wherein the controller is connected to the air-cooled condenser and the water purifier; the water purifier is connected to the water storage tank; the water storage tank is connected to the high-pressure nozzle (13) of the air-cooled condenser via a metal water pipe; the high-pressure nozzle (13) is mounted on a mesh (14) at a preset position below the air inlet of the air-cooled condenser (1), and the nozzle of the high-pressure nozzle faces downward to evenly diffuse the sprayed water mist at the air inlet of the air-cooled condenser (1); a water pump (8) and a pressure tank (9) are mounted on the metal water pipe to provide high-pressure water to the high-pressure nozzle; the water pump is also connected to the controller.
[0006] As a further optimization of the above scheme, the preset position is 5cm directly below the air inlet of the air-cooled condenser; the automatic control device also includes a rain sensor (3) connected to the controller for detecting outdoor rain conditions at the location of the air-cooled condenser; the water storage tank is also equipped with an upper water level sensor (5) for detecting high water level in the water storage tank and a lower water level sensor (7) for detecting low water level in the water storage tank; the metal water pipe has a pressure switch (11) near the pressure tank and an electromagnetic valve (12) near the high-pressure nozzle, and both the pressure switch and the electromagnetic valve are connected to the controller.
[0007] As a further optimization of the above scheme, the automatic control device also includes a current sensing switch (15) installed on the air-cooled condenser for collecting the starting current signal of the air-cooled condenser cooling fan; the metal water pipe is also provided with a drain valve (10) connected to the controller for discharging water from the water storage tank.
[0008] As a further optimization of the above scheme, the controller is an Emerson MultiFlex810-3063 control module; the rain sensor (3) is a ZH-YX-2 humidity sensor; and the water purifier (4) is a reverse osmosis pure water machine.
[0009] As a further optimization of the above scheme, the water pump (8) is a high-pressure plunger pump, and the type of plunger pump can be selected as HAWK high-pressure plunger pump.
[0010] As a further optimization of the above scheme, the pressure switch (11) is a pressure switch with high and low pressure control output. The type of pressure switch can be selected to be closed when the pressure is below 15 kg and open when the pressure is above 25 kg.
[0011] As a further optimization of the above scheme, the high-pressure nozzle (13) is a high-pressure atomizing nozzle. The flow rate of the high-pressure atomizing nozzle can be selected as 0.2L / min, and the pressure is adjustable. Spraying only starts when the pressure is higher than 15kg.
[0012] As a further optimization of the above scheme, the mesh (14) is a galvanized rust-proof steel mesh with a spacing of 10cm.
[0013] As a further optimization of the above scheme, the current sensing switch (15) is a Weigu 1A AC high-sensitivity current detection sensing switch.
[0014] As a further optimization of the above solution, the air-cooled condenser is used in commercial cold chain systems or central air conditioning systems.
[0015] The automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, according to this invention, has the following technical advantages:
[0016] This device pressurizes pure water using a high-pressure water pump and sprays it into tiny atomized particles from a high-pressure atomizing nozzle onto the air inlet of an air-cooled condenser. Utilizing the latent heat of vaporization of water, the evaporation process absorbs heat from the surrounding environment, thus lowering the temperature around the air inlet of the air-cooled condenser and improving its heat dissipation capacity. This can reduce the temperature by 4-7 degrees Celsius, thereby reducing the overall energy consumption of the commercial cold chain system by 7%-15%. The device also incorporates a water purifier to prevent scale buildup on the fins after long-term spraying and vaporization, which could clog the fins and impair heat dissipation. Furthermore, the tiny atomized water particles are completely vaporized at the air inlet, preventing residue on the fins from creating a weak acid environment that could corrode them. Attached Figure Description
[0017] Appendix Figure 1 This is a schematic diagram of the automatic control device for the water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, according to the present invention. Detailed Implementation
[0018] The following is combined with Figure 1 This invention describes the specific structure and working principle of an automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser.
[0019] An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, the automatic control device comprising an air-cooled condenser (1), a controller (2), a water purifier (4), and a water storage tank (6), wherein the controller is connected to the air-cooled condenser and the water purifier; the water purifier is connected to the water storage tank; the water storage tank is connected to the high-pressure nozzle (13) of the air-cooled condenser via a metal water pipe; the high-pressure nozzle (13) is mounted on a mesh (14) at a preset position below the air inlet of the air-cooled condenser (1), and the nozzle of the high-pressure nozzle faces downward to evenly diffuse the sprayed water mist at the air inlet of the air-cooled condenser (1); a water pump (8) and a pressure tank (9) are mounted on the metal water pipe to provide high-pressure water to the high-pressure nozzle; the water pump is also connected to the controller. The preset position is 5cm directly below the air inlet of the air-cooled condenser; the automatic control device also includes a rain sensor (3) connected to the controller for detecting outdoor rainwater conditions at the location of the air-cooled condenser; the water tank is also equipped with an upper water level sensor (5) for detecting high water level and a lower water level sensor (7) for detecting low water level; the metal water pipe has a pressure switch (11) near the pressure tank and an electromagnetic valve (12) near the high-pressure nozzle, both of which are connected to the controller. The automatic control device also includes a current sensing switch (15) installed on the air-cooled condenser for collecting the starting current signal of the air-cooled condenser cooling fan; the metal water pipe is also equipped with a drain valve (10) connected to the controller for discharging water from the water tank. The controller is an Emerson MultiFlex810-3063 control module; the rain sensor (3) is a ZH-YX-2 humidity sensor; the water purifier (4) is a reverse osmosis pure water machine. The water pump (8) is a high-pressure plunger pump, and the type of plunger pump can be selected as a HAWK high-pressure plunger pump. The pressure switch (11) is a pressure switch with high and low pressure control output, and the type of pressure switch can be selected to be closed below 15kg and open above 25kg. The high-pressure nozzle (13) is a high-pressure atomizing nozzle, and the flow rate of the high-pressure atomizing nozzle can be selected as 0.2L / min, and the pressure is adjustable. Spraying only starts when the pressure is above 15kg. The mesh (14) is a galvanized rust-proof steel mesh with a spacing of 10cm. The current sensing switch (15) is a Weigu 1A AC high-sensitivity current detection sensing switch. The air-cooled condenser is used in commercial cold chain systems or central air conditioning systems.
[0020] The layout and working principle of an automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, as described in this utility model, are as follows:
[0021] a) Install the required number of high-pressure nozzles (13) according to the size, shape and quantity of the air-cooled condenser, and then carry out reasonable pipe welding of copper pipes, so as to reasonably select and install the water purifier (4) and water pump (8);
[0022] b) Install an upper water level sensor (5) at the height of the inlet pipe inside the water storage tank (6); install a lower water level sensor (7) 20cm above the outlet pipe. The upper water level sensor (5) controls the shutdown of the water purifier (4), and the lower water level sensor (7) controls the start-up of the water purifier (4) and the water shortage protection of the water pump (8).
[0023] c) The controller, rain sensor (3), upper water level sensor (5), lower water level sensor (7), water pump (8), pressure switch (11), solenoid valve (12), and current sensing switch (15) are connected by power supply wires to form a control circuit.
[0024] d) The rain sensor (3) is a ZH-YX-2 humidity sensor with a switch signal output. It should be placed in an unobstructed location to ensure the accuracy of the collected rainwater signal.
[0025] e) Pressure switch (11) is a pressure switch with high and low pressure control output. It is set to close when the pressure is below 15 kg and open when the pressure is above 25 kg. Its function is to control the start and stop of water pump (8).
[0026] f) When the rain sensor (3) detects a rain signal, the controller does not start the water pump (8) or the electric water valve (12) and does not perform spray cooling to save water and electricity; when the current sensing switch (15) detects the current signal when the cooling fan of the air-cooled condenser (1) starts and the rain sensor (3) detects no rain signal, the controller starts the electric water valve (12) to start spraying for cooling. As the spraying progresses, the pressure of the water stored in the pressure tank (9) and the water in the copper pipe decreases. When the pressure switch (11) drops to 15kg, it triggers the pump start signal, and the controller starts the water pump (8) to pressurize. When the pressure rises to 25kg, it triggers the pressure switch (11) to stop the pump signal, and the controller shuts down the water pump (8); when the controller detects a water shortage signal from the water level switch (7), it stops the machine to protect the water pump motor.
[0027] g) The function of the drain valve (10) is to drain water when the temperature is below 0 degrees Celsius in northern winters, so as to avoid freezing and bursting water pipes. The water purifier (4) and pipelines can be drained and protected through the drain valve of the water purifier.
[0028] The above description of the embodiments is provided to enable those skilled in the art to understand and apply the present invention. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.
Claims
1. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser, characterized in that: The automatic control device includes an air-cooled condenser (1), a controller (2), a water purifier (4), and a water storage tank (6). The controller is connected to the air-cooled condenser and the water purifier. The water purifier is connected to the water storage tank. The water storage tank is connected to the high-pressure nozzle (13) of the air-cooled condenser through a metal water pipe. The high-pressure nozzle (13) is set on a mesh (14) at a preset position below the air inlet of the air-cooled condenser (1), and the nozzle of the high-pressure nozzle faces downward to evenly diffuse the sprayed water mist at the air inlet of the air-cooled condenser (1). A water pump (8) and a pressure tank (9) are provided on the metal water pipe to provide high-pressure water to the high-pressure nozzle. The water pump is also connected to the controller.
2. The automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to claim 1, characterized in that: The preset position is 5cm directly below the air inlet of the air-cooled condenser; the automatic control device also includes a rain sensor (3) connected to the controller for detecting outdoor rain conditions at the location of the air-cooled condenser; the water storage tank is also equipped with an upper water level sensor (5) for detecting high water level and a lower water level sensor (7) for detecting low water level; the metal water pipe has a pressure switch (11) near the pressure tank and an electromagnetic valve (12) near the high-pressure nozzle, both of which are connected to the controller.
3. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to claim 2, characterized in that: The automatic control device also includes a current sensing switch (15) installed on the air-cooled condenser for collecting the starting current signal of the air-cooled condenser cooling fan; the metal water pipe is also equipped with a drain valve (10) connected to the controller for discharging water from the water storage tank.
4. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to any one of claims 2-3, characterized in that: The controller is an Emerson MultiFlex810-3063 control module; the rain sensor (3) is a ZH-YX-2 humidity sensor; and the water purifier (4) is a reverse osmosis pure water machine.
5. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to any one of claims 1-3, characterized in that: The water pump (8) is a high-pressure plunger pump.
6. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to any one of claims 2-3, characterized in that: The pressure switch (11) is a pressure switch with high and low pressure control output.
7. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to any one of claims 1-3, characterized in that: The high-pressure nozzle (13) is a high-pressure atomizing nozzle.
8. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to any one of claims 1-3, characterized in that: The mesh (14) is a galvanized rust-proof steel mesh with a spacing of 10cm.
9. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to claim 3, characterized in that: The current sensing switch (15) is a Weigu 1A AC high-sensitivity current detection sensing switch.
10. An automatic control device for a water mist evaporation phase change cooling system at the air inlet of an air-cooled condenser according to claim 1, characterized in that: The air-cooled condenser is used in commercial cold chain systems or central air conditioning systems.