Air-cooled water chiller control device
By connecting the remote control box and transmission line, and combining structures such as casters, cylindrical blocks and lifting rings, the problem of frequent outdoor operation of air-cooled chiller units has been solved, achieving indoor control, equipment stability, heat dissipation effect, and improving operation convenience and efficiency.
Patent Information
- Application Number
- CN202522074516.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-26
AI Technical Summary
Traditional air-cooled chiller units require frequent trips to the outdoors for operation, which is inconvenient and inefficient due to adverse weather conditions and space limitations.
Design a control device for an air-cooled chiller unit, including a remote control box and transmission line, to connect the indoor operation control panel with the outdoor equipment. Combined with structures such as casters, column blocks and lifting rings, it ensures that the equipment is stably installed outdoors and has good heat dissipation effect.
It enables indoor operation of the equipment, reducing the inconvenience of traveling to and from the outside, improving the convenience and efficiency of operation, ensuring the stability and heat dissipation of the equipment, and extending its service life.
Smart Images
Figure CN224684511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural fertilization technology, and in particular to a control device for an air-cooled chiller unit. Background Technology
[0002] Air-cooled chiller cabinets are widely used in industrial and commercial sectors, often installed outdoors for refrigeration and other applications. Traditionally, switching on and off the equipment requires personnel to travel outdoors. Due to potential adverse weather conditions and space limitations in the outdoor environment, frequent trips to the outdoors to operate the equipment are extremely inconvenient, consuming significant time and energy, and potentially impacting operational efficiency due to environmental factors.
[0003] To address the aforementioned problems, this utility model document proposes a control device for an air-cooled chiller unit. Utility Model Content
[0004] This utility model provides a control device for an air-cooled chiller unit, which solves the shortcomings of the prior art, such as the inconvenience of staff having to frequently travel to and from the outdoors to operate the equipment due to the possibility of severe weather or space limitations in the outdoor environment. This not only consumes a lot of time and energy, but may also affect the operating efficiency due to environmental factors.
[0005] This utility model provides the following technical solution: A control device for an air-cooled chiller unit, comprising: The air-cooled chiller unit cabinet is located outdoors. A control panel is installed on the front of the air-cooled chiller unit cabinet. A transmission line is plugged into the interface of the control panel. The other end of the transmission line is plugged into a remote control box. The four corners of the bottom of the air-cooled chiller unit cabinet are fixed with casters to facilitate equipment movement and column blocks for reinforcement with the support surface.
[0006] In one possible design, the air-cooled chiller cabinet body has double rows of side heat dissipation holes on both sides, and two mounting ports on the top of the air-cooled chiller cabinet body are fixedly installed with upward-facing cooling fans.
[0007] In one possible design, mounting plates for fixing the remote control box to the room are welded and fixed at each of the four corners. A pre-drilled hole I is provided in the center of the mounting plate, and an internal hex bolt I is inserted through the pre-drilled hole I.
[0008] In one possible design, the cylindrical block has an internal threaded groove in the center, and an external hexagonal bolt that can be tightened with a wrench is bolted into the internal threaded groove. A reinforcing plate is welded to the bottom of the external hexagonal bolt. Two pre-drilled holes II are symmetrically arranged on the reinforcing plate. An internal hexagonal bolt II for threaded connection with the pre-drilled threaded groove of the support surface is inserted through the pre-drilled holes II.
[0009] In one possible design, rubber gaskets of the same size are glued to both the top and bottom of the reinforcing plate.
[0010] In one possible design, lifting rings are welded and fixed at the four corners of the top of the air-cooled chiller unit cabinet to facilitate the hoisting of the equipment.
[0011] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.
[0012] The working principle and usage process of this technical solution are as follows: Before use, the air-cooled chiller unit cabinet can be pushed to the pre-set outdoor installation location (such as next to a building exterior wall, equipment platform, etc.) using the four casters at the bottom corners of the cabinet. The rolling characteristics of the casters allow for flexible adjustment of the cabinet position, enabling initial positioning without the need for large hoisting equipment, thus reducing the difficulty of installation and handling. After positioning, use a wrench to tighten the external hex bolts inside the cylindrical block at the bottom of the cabinet. Since the external hex bolts are connected to the internal threaded groove bolts of the cylindrical block, tightening the bolts will cause the bottom reinforcing plate to move downwards until the rubber at the bottom of the reinforcing plate is engaged. The rubber gaskets are tightly fitted to the supporting surface (such as the ground or equipment base). At this time, the cabinet is lifted, and the casters are disengaged from the supporting surface to prevent the equipment from sliding due to external forces. Finally, the hex bolts II are inserted through the reserved holes II in the reinforcing plate and threaded into the pre-set threaded grooves on the supporting surface to complete the fixing and reinforcement of the cabinet. The rubber gaskets can increase the friction between the reinforcing plate and the supporting surface and at the same time buffer the vibration of the equipment during operation. If the installation location requires high-altitude hoisting (such as roof equipment platform), hoisting ropes can be connected through the lifting rings at the four corners of the top of the cabinet to achieve safe hoisting of the cabinet. Next, in an easily accessible location indoors (such as a control room or duty room), position the remote control box using the mounting plates at its four corners. Attach the mounting plates to the wall or mounting bracket, aligning the pre-drilled hole I in the center of the mounting plate with the pre-drilled mounting hole on the wall. Then, insert the hex bolt I through the pre-drilled hole I and tighten it to complete the fixed installation of the remote control box. This ensures the remote control box is stably placed indoors, preventing displacement due to external impacts. Take the matching transmission cable, insert one end into the interface on the front control panel of the air-cooled chiller unit cabinet, and the other end into the corresponding interface on the remote control box to establish signal and command transmission connection between the cabinet and the remote control box. The plug-in connection method eliminates the need for professional soldering, facilitating wiring during installation and subsequent maintenance. With the system dismantled, staff can operate the unit from indoors via a remote control box without going outdoors, performing tasks such as starting and stopping the unit, setting the cooling temperature, and switching operating modes. After receiving instructions from the operator, the remote control box transmits the instructions to the control panel via a transmission line. The control panel, as the local control core of the cabinet, further converts the instructions into unit operating signals, controlling the start or adjustment of core components such as the compressor and fan. At the same time, the operating parameters of the air-cooled chiller cabinet (such as outlet water temperature, system pressure, current, etc.) are collected by the control panel and fed back to the remote control box via a transmission line. Staff can view the equipment operating status in real time on the remote control box, and can grasp the unit's operating condition without outdoor on-site inspection. During unit operation, electrical components (such as controllers and frequency converters) inside the cabinet will generate heat. At this time, the double rows of side heat dissipation holes on both sides of the cabinet and the cooling fan on the top work together. The cooling fan runs in an upward direction to accelerate the upward exhaust of hot air inside the cabinet. At the same time, cold air from the outside enters the cabinet through the side heat dissipation holes, forming an air convection from bottom to top, which quickly removes heat and prevents the temperature inside the cabinet from being too high, which could lead to electrical component failure (such as controller crash or frequency converter overheating protection).
[0013] This utility model has the following beneficial effects: This invention, by setting up a remote control box and connecting it to the control panel via a transmission line, allows staff to operate and control the outdoor air-cooled chiller unit cabinet from indoors, avoiding the inconvenience of frequently going outdoors to operate the equipment and greatly improving the convenience of operation and work efficiency.
[0014] This utility model features casters at the four corners of the bottom of the air-cooled chiller unit cabinet, facilitating movement and positioning of the equipment during installation and reducing the difficulty and labor intensity of manual handling. The cylindrical blocks, external hexagonal bolts, reinforcing plates, and internal hexagonal bolts II ensure the equipment is securely fixed to the support surface after reaching the designated position, guaranteeing operational stability. The rubber pads on the reinforcing plates provide cushioning and anti-slip properties, further enhancing the stability and reliability of the equipment installation.
[0015] This utility model features a double row of side ventilation holes on both sides of the air-cooled chiller unit cabinet, and an upward-facing cooling fan installed on the top. This design helps to increase air circulation inside the equipment, dissipate the heat generated during operation in a timely manner, prevent equipment failure due to overheating, and extend the service life of the equipment.
[0016] The lifting ring in this invention provides a safety guarantee for high-altitude installation (such as on the roof or high-rise equipment platform), preventing the cabinet from tilting and falling due to lack of support points during hoisting, while also reducing the positioning difficulty during high-altitude installation and improving installation efficiency. Attached Figure Description
[0017] Figure 1 A three-dimensional structural schematic diagram of a control device for an air-cooled chiller unit provided in an embodiment of this utility model; Figure 2 A schematic diagram of the air-cooled chiller unit cabinet structure provided for an embodiment of this utility model; Figure 3 A schematic diagram of the remote control box structure of a control device for an air-cooled chiller unit provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the separation structure of the external hexagonal bolt and cylindrical block of a control device for an air-cooled chiller unit provided in an embodiment of this utility model.
[0018] Reference numerals in the attached diagram: 1. Air-cooled chiller unit cabinet body; 2. Control panel; 3. Side ventilation holes; 4. Cooling fan; 5. Remote control box; 6. Transmission line; 7. Mounting plate; 8. Reserved hole I; 9. Casters; 10. Column block; 11. Internal threaded groove; 12. External hex bolt; 13. Reinforcing plate; 14. Reserved hole II; 15. Rubber gasket; 16. Internal hex bolt I; 17. Internal hex bolt II; 18. Lifting eye. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0021] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0022] Please refer to Figure 1-4 A control device for an air-cooled chiller unit, used in the field of air-cooled chiller units, comprising: The air-cooled chiller cabinet body 1, with its surface coated with anti-rust paint, has a pre-cut mounting groove on its front for the control panel 2. The control panel 2 is embedded in the mounting groove and fixed with bolts to ensure a tight connection between the control panel 2 and the air-cooled chiller cabinet body 1 without any looseness. The air-cooled chiller cabinet body 1 achieves its cooling function through refrigerant circulation. The refrigerant absorbs heat from the object being cooled (such as cooling water) and vaporizes in the evaporator. The compressor continuously extracts the gaseous refrigerant generated in the evaporator and compresses it into high-temperature and high-pressure steam, which is then sent to the condenser. In the condenser, the refrigerant exchanges heat with the air, releases heat, condenses into a liquid, and then re-enters the evaporator for vaporization after being depressurized by the throttling mechanism, forming a continuous cycle.
[0023] At the four corners of the bottom of the air-cooled chiller unit cabinet body 1, casters 9 and cylindrical blocks 10 are fixed by welding. Casters 9 are industrial-grade casters with braking function. The cylindrical blocks 10 are solid metal blocks with pre-machined internal thread grooves 11 at their center. The size of the internal thread grooves 11 matches the thread size of the external hex bolts 12. The bottom of the external hex bolts 12 is welded to the reinforcing plate 13. The reinforcing plate 13 is made of stainless steel. Rubber gaskets 15 are glued to the top and bottom of the reinforcing plate 13 with strong adhesive. The rubber gaskets 15 are made of aging-resistant nitrile rubber and have the same size as the reinforcing plate 13. At the same time, two reserved holes II 14 are symmetrically machined on the reinforcing plate 13. The diameter of the reserved holes II 14 is adapted to the diameter of the internal hex bolts II 17.
[0024] On both sides of the air-cooled chiller unit cabinet body 1, double rows of side heat dissipation holes 3 are evenly opened along the height direction to ensure smooth air circulation. Two mounting ports are machined on the top of the air-cooled chiller unit cabinet body 1. The size of the mounting ports matches the outer dimensions of the (axial flow) cooling fan 4. The cooling fan 4 is embedded into the mounting port and fixed to the edge of the mounting port with bolts. The airflow direction of the cooling fan 4 is set upward, so that it can drive the air inside the cabinet to flow upward after power is turned on.
[0025] The remote control box 5, with its ABS engineering plastic shell, has four corners secured with welding mounting plates 7. These mounting plates 7 are curved metal pieces that conform to the wall or mounting bracket surface. A pre-drilled hole Ⅰ8 is machined in the center of each mounting plate 7. The diameter of hole Ⅰ8 matches the diameter of a hexagonal socket head cap screw Ⅰ16. The hexagonal socket head cap screw Ⅰ16 is made of stainless steel, and its length is determined according to installation requirements, ensuring it can penetrate the mounting plate 7 and reach sufficient depth into the wall or mounting bracket for secure fixing. The internal panel of the remote control box 5 features a 5-inch TFT LCD screen with a resolution of 800×480, displaying parameters such as outlet water temperature, system pressure, and compressor frequency. The operating interface uses capacitive touch. The system uses virtual buttons for "Start / Stop," "Temperature Setting," and "Mode Switching." When an operator touches the "Start" button, the signal is transmitted via transmission line 6 to control panel 2. The PLC (model FX3U-32MT) on the panel interprets the instructions and drives the contactor (model CJX2-1210) to close, starting the compressor. Simultaneously, the PLC collects sensor data every 2 seconds and packages the data via the Modbus-RTU protocol to send to remote control box 5, updating the display interface. When the system pressure exceeds 2.5MPa, the PLC triggers the high-pressure protection program, immediately cutting off the compressor power and displaying the "E01" fault code on the screen of remote control box 5.
[0026] During installation, if the installation location is on the ground or a low equipment platform, push the air-cooled chiller unit cabinet 1 and adjust its position using the casters 9 at the bottom to move it to the pre-designated outdoor installation area. Once the position is determined, temporarily fix it by depressing the brake device of the casters 9. Then, use a wrench to hold the hexagonal head of the external hexagonal bolt 12 and turn it clockwise. The external hexagonal bolt 12 will move downwards along the internal thread groove 11 of the cylindrical block 10, simultaneously driving the reinforcing plate 13 and the rubber gasket 15 downwards until reinforcement is achieved. The rubber pad 15 at the bottom of plate 13 is fully in contact with the support surface. Continue to tighten the external hex bolt 12 to gradually raise the air-cooled chiller cabinet body 1 until the caster 9 is removed from the support surface. At this time, stop tightening the external hex bolt 12, pass the internal hex bolt II 17 through the reserved hole II 14 on the reinforcing plate 13, align it with the reserved thread groove pre-machined on the support surface, and use an internal hex wrench to tighten the internal hex bolt II 17 clockwise until the internal hex bolt II 17 is fully tightened, thus completing the fixation of the air-cooled chiller cabinet body 1 on the support surface. The installation of the remote control box 5 must be carried out indoors. Choose an area that is easy to operate, such as a control room or duty room. Attach the remote control box 5 to the wall or mounting bracket, and adjust its position so that the reserved hole I8 on the mounting plate 7 is aligned with the preset mounting hole on the wall or mounting bracket. Pass the hex bolt I16 through the reserved hole I8 and use an Allen wrench to tighten the hex bolt I16 clockwise until it is fully tightened. The remote control box 5 is then firmly fixed to the wall or mounting bracket without any shaking. After completing the installation of the air-cooled chiller unit cabinet 1 and the remote control box 5, take the transmission cable 6. The transmission cable 6 should be an industrial control cable with a shielded layer to reduce external interference. Insert one end of the transmission cable 6 into the RS485 interface of the control panel 2. The interface is equipped with an anti-drop buckle. After insertion, gently pull the transmission cable 6 to confirm a secure connection. Then insert the other end of the transmission cable 6 into the corresponding communication interface of the remote control box 5, and confirm a stable connection. This establishes the signal and command transmission channel between the control panel 2 and the remote control box 5. During equipment operation, staff operate the remote control box 5 indoors, inputting commands such as unit start / stop, cooling temperature setting, and operating mode switching via operation buttons or touchscreen on the box 5. These commands are transmitted to the control panel 2 via transmission line 6. The control panel 2 receives the commands and converts them into operating signals for the core components inside the air-cooled chiller cabinet 1, such as the compressor and fan, controlling these components to start or adjust their operating status according to the commands. Simultaneously, operating parameters such as outlet water temperature, system pressure, and current collected by components inside the air-cooled chiller cabinet 1 are transmitted to the control panel 2 in real time. The control panel 2 processes these parameters and transmits them to the control panel 2. Line 6 feeds back to the remote control box 5. Staff can view these operating parameters on the display screen of the remote control box 5 and keep track of the unit's real-time operating status. During the unit's operation, the electrical components such as the controller and frequency converter inside the air-cooled chiller cabinet 1 will generate heat. At this time, the top cooling fan 4 is started. After the cooling fan 4 is powered on, it runs in an upward direction, accelerating the upward flow of hot air inside the cabinet and exhausting it from the top of the cabinet. At the same time, the cold air from the outside enters the cabinet through the double-row side heat dissipation holes 3 on both sides of the cabinet under the action of air pressure difference, forming a bottom-in and top-out air convection, which quickly removes the heat inside the cabinet and keeps the temperature inside the cabinet within the normal operating temperature range of the electrical components, avoiding failure of electrical components due to excessive temperature.
[0027] Please refer to Figure 1At the top four corners of the air-cooled chiller unit cabinet body 1, lifting rings 18 are welded and fixed. The lifting rings 18 are made of high-strength alloy material, and their load-bearing capacity must meet the overall weight of the air-cooled chiller unit cabinet body 1. The welded joints need to be rust-proofed to avoid corrosion during long-term outdoor use. When hoisting at height, four steel wire ropes are used to pass through the corresponding lifting rings 18 and hook them with the crane to form a four-point lifting. During the hoisting process, the cabinet is kept horizontal and slowly hoisted to the roof platform. The position of the crane is then finely adjusted to align the cabinet with the base. The cabinet is then slowly lowered to a position where the reinforcing plate 13 is 50mm away from the base and the cabinet position is paused. The cabinet's orientation is then manually adjusted.
[0028] However, as is well known to those skilled in the art, the working principles and wiring methods of the air-cooled chiller unit cabinet body 1, the cooling fan 4 and the remote control box 5 are all conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.
[0029] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0030] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A control device for an air-cooled chiller unit, characterized in that, include: The air-cooled chiller cabinet body (1) is placed outdoors. A control panel (2) is installed on the front of the air-cooled chiller cabinet body (1). A transmission line (6) is plugged into the interface of the control panel (2). The other end of the transmission line (6) is plugged into the remote control box (5). The four corners of the bottom of the air-cooled chiller cabinet body (1) are fixed with casters (9) to facilitate equipment movement and column blocks (10) for reinforcement with the support surface.
2. The air-cooled chiller control device according to claim 1, characterized in that, The air-cooled chiller cabinet body (1) has double rows of side heat dissipation holes (3) on both sides, and the air-cooled chiller cabinet body (1) has two mounting ports on the top with upward-facing cooling fans (4).
3. The air-cooled chiller control device according to claim 1, characterized in that, The remote control box (5) is welded and fixed at each of its four corners with mounting plates (7) for fixing it indoors. A reserved hole I (8) is provided in the center of the mounting plate (7), and an internal hex bolt I (16) is inserted through the reserved hole I (8).
4. The control device for an air-cooled chiller unit according to claim 1, characterized in that, The cylindrical block (10) has an internal thread groove (11) in the center. An external hexagonal bolt (12) that can be tightened with a wrench is bolted into the internal thread groove (11). A reinforcing plate (13) is welded and fixed to the bottom of the external hexagonal bolt (12). Two reserved holes II (14) are symmetrically arranged on the reinforcing plate (13). An internal hexagonal bolt II (17) for threaded connection with the reserved thread groove of the support surface is provided through the reserved hole II (14).
5. The air-cooled chiller control device according to claim 4, characterized in that, The top and bottom of the reinforcing plate (13) are glued with rubber pads (15) of the same size.
6. The control device for an air-cooled chiller unit according to claim 1, characterized in that, The air-cooled chiller unit cabinet body (1) has four corners of the top with lifting rings (18) for easy hoisting of the equipment.