Cooling-water machine with good stability and cooling-water machine constant power control system

Abstract

The invention discloses a cooling-water machine with good stability and a constant power control system of the cooling-water machine, and relates to the technical field of cooling-water machines, the cooling-water machine with good stability comprises a case, a filtering mechanism and a cleaning mechanism; the filtering mechanism comprises a mesh plate, a first filter screen, a synchronous belt, a driving synchronous wheel, a driven synchronous wheel, a driving shaft, a driven shaft and a first motor, the cleaning mechanism comprises a rolling brush, a second motor and a collecting assembly, air entering the machine box is filtered through the first filter screen, pollutants such as dust and particulate matter in the air can be prevented from entering the machine box, and the cleaning efficiency is improved. Therefore, the pollutants are prevented from interfering with the operation of the cooling-water machine, and the stable operation of the cooling-water machine is ensured; and the rolling brush can clean the whole first filter screen, the first filter screen is prevented from being blocked, it is guaranteed that sufficient air can enter the machine box, and the situation that the water chiller runs unstably due to insufficient air inflow is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water chillers, and more particularly to a water chiller with good stability and a constant power control system for the water chiller. Background Art

[0002] A chiller, also known as a cooling water circulation machine or a refrigeration unit, is a device that is specialized in providing a stable low-temperature cooling water flow. It works through an internal refrigeration system (such as compressor refrigeration, absorption refrigeration, etc.), cools normal temperature or warm water, and continuously circulates it to the equipment or system that needs cooling, so as to achieve the purpose of controlling temperature, protecting equipment, improving production efficiency or optimizing the working environment. Chillers are widely used in industrial production, scientific research experiments, medical equipment, data centers, food processing, laser technology, plastic molding, chemical pharmaceuticals and other fields. They are one of the indispensable important equipment in modern industrial and scientific research activities. Its characteristics include high efficiency and energy saving, precise temperature control, stable and reliable operation, simple operation and convenient maintenance, etc., which can effectively meet the different requirements of different industries for cooling water temperature, flow and water quality.

[0003] The complexity of chillers poses many challenges to constant power control. The system needs to comprehensively consider the mutual influence of multiple components such as the compressor, condenser, and evaporator, as well as the real-time changes in parameters such as temperature, flow, and pressure, in order to achieve precise power control. Under certain extreme working conditions, such as severe external interference and drastic changes in system parameters, the chiller may become unstable, affecting its normal operation. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a chiller with good stability and a chiller constant power control system.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a water chiller with good stability, comprising a chassis, a filtering mechanism and a cleaning mechanism; The filter mechanism is arranged on the chassis, and the filter mechanism is used to filter the air entering the chassis. The filter mechanism comprises a mesh plate, a first filter, a synchronous belt, an active synchronous wheel, a driven synchronous wheel, a driving shaft, a driven shaft and a first motor. The mesh plate is fixedly connected to the chassis, and the mesh holes on the mesh plate communicate the interior of the chassis with the exterior of the chassis. The mesh plate is sleeved with a first filter, and gaps for the first filter to pass through are respectively reserved between the two ends of the mesh plate and the chassis. The two ends of the first filter are respectively fixedly connected with a synchronous belt, and the two synchronous belts are respectively meshed with an active synchronous wheel and a driven synchronous wheel, and the two active synchronous wheels are both fixedly connected to the driving shaft, and the two driven synchronous wheels are both fixedly connected to the driven shaft, and the driving shaft and the driven shaft are both rotatably connected to the chassis. The first motor is installed on the chassis, and the output shaft of the first motor is connected to one end of the driving shaft or the driven shaft; The cleaning mechanism is arranged on the chassis, and is used to clean the first filter. The cleaning mechanism comprises a roller brush, a second motor and a collecting assembly. The roller brush is rotatably connected to the chassis, and the roller brush contacts the first filter. One end of the roller brush is connected to the output shaft of the second motor, and the second motor is mounted on the chassis. The collecting assembly is connected to the chassis and is used to collect impurities cleaned off the first filter.

[0006] A further technical solution of the present application is as follows: round rods are fixedly connected to both ends of the mesh plate, and both round rods are in frictional contact with the first filter screen.

[0007] A further technical solution of the present application is as follows: the collecting assembly comprises a collecting box, the collecting box is mounted on the chassis, and the roller brush is located at the opening of the collecting box.

[0008] A further technical solution of the present application is as follows: the collecting assembly further comprises a scraper, the scraper is fixedly connected to the collecting box, and the scraper is in conflict with the roller brush.

[0009] A further technical solution of the present application is as follows: the collection component also includes a second filter, the second filter is fixedly connected to the collection box, a vent is provided on the side wall of the chassis and on one side of the second filter, the vent connects the interior of the collection box with the interior of the chassis.

[0010] The present application also provides a chiller constant power control system, which is applied to the above-mentioned chiller with good stability, and the chiller constant power control system includes a monitoring module, a control panel, a control module and a remote monitoring module; The monitoring module includes a temperature sensor, a flow sensor and a pressure sensor. The temperature sensor is used to monitor the outlet water temperature, return temperature, exhaust temperature and external temperature of the chiller in real time. The flow sensor is used to monitor the flow rate of cooling water in the chiller in real time. The pressure sensor is used to monitor the pressure change in the chiller system in real time. The control panel is installed on the chassis, and the control panel is used to set relevant parameters of target temperature, flow, pressure and constant power; The control module is responsible for data processing and logic control of the entire system and has a built-in PID algorithm; The control module is used to receive the temperature, flow and pressure data monitored by the monitoring module and calculate the actual power of the current system based on these data; the control module is also used to compare the actual power with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, the circulation pump and the heater through the PID algorithm, so as to adjust the actual power to the target constant power value; The control panel is used to receive and display various data, including temperature, flow, pressure and actual power. The control panel is also used to trigger an alarm mechanism when various data exceed a set range; The remote monitoring module is used to realize remote monitoring and management of the chiller, including real-time data viewing, historical data query and alarm information push functions.

[0011] A further technical solution of the present application is: the control module is used to adjust the speed of the compressor through frequency conversion technology, thereby changing the cooling capacity and further affecting the power output; The control module is used to adjust the speed of the circulation pump to maintain a constant flow rate and pressure, and to assist in regulating the power; The control module is used to change the duty cycle of the PWM wave to control the solid-state absorption after self-tuning the control output through the PID algorithm, thereby controlling the heating time of the heater to change the temperature and maintain a constant power output.

[0012] The present application also provides a constant power control method for a chiller, which is applied to the constant power control system of the chiller described above. The constant power control method for the chiller comprises the following steps: S1. System initialization: Turn on the power and start the chiller; set the target temperature, flow, pressure and constant power related parameters through the control panel or remote monitoring module; S2. Monitoring and feedback: Monitor the temperature of cooling water in real time through the temperature sensor and feed the data back to the control module; monitor the flow rate of cooling water in real time through the flow sensor and feed the data back to the control module; monitor the pressure of cooling water in real time through the pressure sensor and feed the data back to the control module; S3. Constant power control: Calculate the actual power of the current system based on the monitored temperature, flow and pressure data; The actual power is compared with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, circulating pump and heater through the PID algorithm, so as to adjust the actual power to the target constant power value; S4. Data recording and alarm: regularly collect and record temperature, flow, pressure and actual power data; display the system operation status and various data in real time through the control panel; if the data exceeds the set range, the alarm mechanism will be triggered; S5. Communication transmission: upload various data to the remote monitoring module.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The air entering the chassis is filtered through the first filter, which can prevent pollutants such as dust and particles in the air from entering the chassis, thereby preventing these pollutants from interfering with the operation of the chiller and ensuring the stable operation of the chiller; 2. The second motor can drive the roller brush to rotate, and the roller brush can clean the place that conflicts with the first filter; combined with the rotation of the first filter itself, the roller brush can clean the entire first filter, thereby preventing the first filter from being blocked, ensuring that sufficient air can enter the chassis, and avoiding unstable operation of the chiller due to insufficient air intake; 3. The temperature, flow and pressure data of the chiller are collected and processed. The processed data is controlled and output through PID algorithm self-tuning to obtain a stable constant power control system to overcome the impact of certain extreme working conditions on the chiller, making the operation of the chiller more stable, with stronger anti-interference ability and lower energy consumption to meet different industrial and production needs.

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a water chiller with good stability according to an embodiment of the present invention; Figure 2It is a structural schematic diagram of the filtering mechanism in an embodiment of the present invention; Figure 3 is a cross-sectional view of a first filter screen in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the vent in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a collection component in an embodiment of the present invention; Figure 6 The figure is a flow chart of a constant power control method for a chiller in an embodiment of the present invention.

[0016] In the figure: 1. chassis; 2. mesh plate; 3. first filter; 4. synchronous belt; 5. active synchronous wheel; 6. driven synchronous wheel; 7. active shaft; 8. driven shaft; 9. first motor; 10. roller brush; 11. second motor; 12. round rod; 13. collection box; 14. scraper; 15. second filter; 16. vent; 17. control panel. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the directions or positional relationships indicated are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Reference Figures 1 to 5 , In one embodiment of the present application, a water chiller with good stability includes a chassis 1, a filtering mechanism and a cleaning mechanism; The filtering mechanism is arranged on the chassis 1, and is used to filter the air entering the chassis 1. The filtering mechanism comprises a mesh plate 2, a first filter screen 3, a synchronous belt 4, an active synchronous wheel 5, a driven synchronous wheel 6, an active shaft 7, a driven shaft 8 and a first motor 9. The mesh plate 2 is fixedly connected to the chassis 1, and the mesh holes on the mesh plate 2 connect the inside of the chassis 1 with the outside of the chassis 1. The outside air needs to pass through the mesh plate 2 to enter the inside of the chassis 1. The mesh plate 2 is provided with a first filter screen 3, and gaps for the first filter screen 3 to pass through are respectively left between the two ends of the mesh plate 2 and the chassis 1. Figure 4 , there is a gap between the upper and lower ends of the mesh plate 2 and the chassis 1, such as Figure 1 and Figure 2 , the first filter screen 3 is annular and connected end to end, and the first filter screen 3 passes through the gaps at the upper and lower ends of the mesh plate 2, the mesh plate 2 fits the first filter screen 3, and the outside air can pass through the mesh plate 2 and enter the interior of the chassis 1 after being filtered by the first filter screen 3. The two ends of the first filter screen 3 are respectively fixedly connected with a synchronous belt 4, and the two synchronous belts 4 are respectively meshed with a driving synchronous wheel 5 and a driven synchronous wheel 6, the two driving synchronous wheels 5 are fixedly connected to the driving shaft 7, and the two driven synchronous wheels 6 are fixedly connected to the driven shaft 8, and the driving shaft 7 and the driven shaft 8 are both rotatably connected to the chassis 1. A first motor 9 is installed on the chassis 1, and the output shaft of the first motor 9 is connected to one end of the driving shaft 7 or the driven shaft 8; like Figure 3 , the first motor 9 can drive the driving shaft 7 to rotate, the driving shaft 7 can drive the two driving synchronous wheels 5 to rotate, the two driving synchronous wheels 5 can respectively drive the two driven synchronous wheels 6 to rotate through the synchronous belt 4, and the two driven synchronous wheels 6 drive the driven shaft 8 to rotate; The two synchronous belts 4 support the two ends of the first filter screen 3 respectively, and the two synchronous belts 4 can drive the first filter screen 3 to rotate; The cleaning mechanism is arranged on the chassis 1, and is used to clean the first filter 3. The cleaning mechanism comprises a roller brush 10, a second motor 11 and a collecting assembly. The roller brush 10 is rotatably connected to the chassis 1, and the roller brush 10 contacts the first filter 3. One end of the roller brush 10 is connected to the output shaft of the second motor 11, and the second motor 11 is installed on the chassis 1; like Figure 1 The second motor 11 can drive the roller brush 10 to rotate, and the roller brush 10 can clean the place that conflicts with the first filter 3; combined with the rotation of the first filter 3 itself, the roller brush 10 can clean the entire first filter 3; The first filter 3 filters the air entering the chassis 1, thereby preventing pollutants such as dust and particles in the air from entering the chassis 1, thereby preventing these pollutants from interfering with the operation of the chiller, and ensuring the stable operation of the chiller; and the roller brush 10 can clean the entire first filter 3 to prevent the first filter 3 from being blocked, thereby ensuring that sufficient air can enter the chassis 1, and preventing the unstable operation of the chiller due to insufficient air intake; The collecting assembly is connected to the chassis 1 and is used to collect impurities cleaned from the first filter screen 3; Multiple filtering mechanisms and cleaning mechanisms can be provided respectively, so that there are multiple air intake locations on the chassis 1.

[0021] Reference Figure 3 As a preferred embodiment of the present application, round rods 12 are fixedly connected to both ends of the mesh plate 2, and the two round rods 12 are in frictional contact with the first filter screen 3, which can prevent some edges and corners on the mesh plate 2 from scratching the first filter screen 3.

[0022] Reference Figure 1 and Figure 5 As a preferred embodiment of the present application, the collecting assembly includes a collecting box 13, which is mounted on the chassis 1. The roller brush 10 is located at the opening of the collecting box 13. The roller brush 10 can directly clean the pollutants on the first filter 3 into the collecting box 13 during rotation. The pollutants are collected by the collecting box 13, and the collecting box 13 can be removed and the pollutants inside it can be cleaned.

[0023] Reference Figure 5 As a preferred embodiment of the present application, the collection assembly also includes a scraper 14, which is fixedly connected to the collection box 13. The scraper 14 contacts the roller brush 10, and the scraper 14 can scrape off the pollutants on the roller brush 10 to prevent the roller brush 10 from bringing the pollutants out of the collection box 13.

[0024] Reference Figure 4 and Figure 5 As a preferred embodiment of the present application, the collection component also includes a second filter 15, which is fixedly connected to the collection box 13. A vent 16 is provided on the side wall of the chassis 1 and on one side of the second filter 15. The vent 16 connects the interior of the collection box 13 with the interior of the chassis 1. The vent 16 is equivalent to an air inlet. The interior of the chassis 1 can apply a certain suction force to the interior of the collection box 13 through the vent 16. The suction force can adsorb the pollutants in the collection box 13 to prevent the pollutants from escaping from the collection box 13, and the second filter 15 can prevent the pollutants in the collection box 13 from being sucked into the chassis 1.

[0025] In another embodiment of the present application, a constant power control system for a chiller is also proposed, including a monitoring module, a control panel 17, a control module and a remote monitoring module; The monitoring module includes a temperature sensor, a flow sensor and a pressure sensor. The temperature sensor is used to monitor the outlet water temperature, return temperature, exhaust temperature and external temperature of the chiller in real time. The flow sensor is used to monitor the flow rate of cooling water in the chiller in real time. The pressure sensor is used to monitor the pressure change in the chiller system in real time. Automatically adjust the valve opening of the temperature control valve, flow control valve and pressure control valve according to the feedback signal of the sensor to achieve precise control of temperature, flow and pressure; The control panel 17 is installed on the chassis 1, and the control panel 17 is used to set the target temperature, flow, pressure and related parameters of constant power; The control module is responsible for data processing and logic control of the entire system and has a built-in PID algorithm. The control module can use the high-performance microprocessor Inovance Easy320 as the core. The PID algorithm is used to achieve precise control of the chiller power, temperature, flow and pressure; The control module is used to receive the temperature, flow and pressure data monitored by the monitoring module and calculate the actual power of the current system based on these data; the control module is also used to compare the actual power with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, the circulation pump and the heater through the PID algorithm, so as to adjust the actual power to the target constant power value; The control panel 17 is used to receive and display various data, including temperature, flow, pressure and actual power. The control panel 17 is also used to trigger an alarm mechanism when various data exceed a set range; The remote monitoring module is used to realize remote monitoring and management of the chiller, including real-time data viewing, historical data query and alarm information push functions; This control system supports industrial communication protocols such as RS485 and CAN, thereby realizing data exchange with the remote monitoring module, and then realizing remote monitoring and management of the chiller through the remote monitoring module.

[0026] As a preferred embodiment of the present application, the control module is used to adjust the speed of the compressor through frequency conversion technology, thereby changing the cooling capacity and further affecting the power output; The frequency converter changes the input voltage and frequency of the motor to achieve precise control of the motor speed, thereby achieving power regulation; The control module is used to adjust the speed of the circulation pump to maintain a constant flow rate and pressure, and to assist in regulating the power; The control module is used to change the duty cycle of the PWM wave to control the solid-state pull-in after self-tuning the control output through the PID algorithm, thereby controlling the heating time of the heater to change the temperature and thus maintaining a constant power output; The pressure sensor is used to measure the outlet and return pressures and transmit data through 485 communication to prevent overpressure or underpressure; the temperature sensor is used to detect the actual outlet temperature and transmit it to the control module through 485 communication for comparison with the set value, and control the solid-state relay through PWM wave to control the output of the heater to change the temperature difference; the flow sensor measures the flow of cooling water and transmits it through 4-20ma analog conversion and performs PID self-tuning with the set flow, and transmits the difference of the set value through 485 to output the frequency of the inverter, and controls the cooling water flow through the speed of the pump; This application collects and processes the temperature, flow and pressure data of the chiller. The processed data is controlled and output through PID algorithm self-tuning to obtain a stable constant power control system to overcome the impact of certain extreme working conditions on the chiller, making the operation of the chiller more stable, with stronger anti-interference ability and lower energy consumption, meeting different industrial and production needs; The formulas involved in the constant power control system of the chiller are: The formulas involved in collecting temperature and pressure: The calculated output value Output is obtained by collecting ten data and taking the average value, which is the actual value of the output value; PID algorithm formula: u t :output K p : Proportional coefficient T i :Integral time constant T d : Differential time constant e t :error dt: sampling period de t : Error change slope ∫ t 0: Accumulation of errors The calculation formula of actual power: W=Q=Cm△t=CρV△t C: specific heat ρ: density V: Volume △t: Change temperature In another embodiment of the present application, a constant power control method for a chiller is also proposed, comprising the following steps: S1. System initialization: Turn on the power and start the chiller; set the target temperature, flow, pressure and constant power related parameters through the control panel 17 or the remote monitoring module; S2. Monitoring and feedback: Monitor the temperature of cooling water in real time through the temperature sensor and feed the data back to the control module; monitor the flow rate of cooling water in real time through the flow sensor and feed the data back to the control module; monitor the pressure of cooling water in real time through the pressure sensor and feed the data back to the control module; S3. Constant power control: Calculate the actual power of the current system based on the monitored temperature, flow and pressure data; The actual power is compared with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, circulating pump and heater through the PID algorithm, so as to adjust the actual power to the target constant power value; S4. Data recording and alarm: regularly collect temperature, flow, pressure and actual power data and record them; display the system operation status and various data in real time through the control panel 17. If the data exceeds the set range, the alarm mechanism is triggered; S5. Communication transmission: upload various data to the remote monitoring module.

[0027] It should be noted that the electrical components appearing in this application document are all electrically connected to the 220V mains electricity, the standard parts used in this application document can all be purchased on the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, so no specific description will be given here.

[0028] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water chiller with good stability, characterized in that: include: Chassis (1); A filter mechanism, the filter mechanism being arranged on the chassis (1), the filter mechanism being used to filter the air entering the chassis (1), the filter mechanism comprising a mesh plate (2), a first filter screen (3), a synchronous belt (4), an active synchronous wheel (5), a driven synchronous wheel (6), an active shaft (7), a driven shaft (8) and a first motor (9), the mesh plate (2) being fixedly connected to the chassis (1), the mesh holes on the mesh plate (2) being connected to the inside of the chassis (1) and the outside of the chassis (1), the first filter screen (3) being sleeved on the mesh plate (2), and two ends of the mesh plate (2) being respectively connected to the chassis (1) and the mesh holes on the mesh plate (2) being connected to the inside of the chassis (1) and the outside of the chassis (1). A gap is left for the first filter (3) to pass through, the two ends of the first filter (3) are respectively fixedly connected to a synchronous belt (4), the two synchronous belts (4) are respectively meshed with a driving synchronous wheel (5) and a driven synchronous wheel (6), the two driving synchronous wheels (5) are both fixedly connected to a driving shaft (7), the two driven synchronous wheels (6) are both fixedly connected to a driven shaft (8), the driving shaft (7) and the driven shaft (8) are both rotatably connected to the chassis (1), the chassis (1) is mounted with a first motor (9), the output shaft of the first motor (9) is connected to one end of the driving shaft (7) or the driven shaft (8); and A cleaning mechanism, the cleaning mechanism being arranged on the chassis (1), the cleaning mechanism being used to clean the first filter (3), the cleaning mechanism comprising a roller brush (10), a second motor (11) and a collecting assembly, the roller brush (10) being rotatably connected to the chassis (1), the roller brush (10) being in contact with the first filter (3), one end of the roller brush (10) being connected to an output shaft of the second motor (11), and the second motor (11) being mounted on the chassis (1); The collecting component is connected to the chassis (1), and is used to collect impurities cleaned from the first filter screen (3).

2. A water chiller with good stability according to claim 1, characterized in that: Round rods (12) are respectively fixedly connected to both ends of the mesh plate (2), and the two round rods (12) are in frictional contact with the first filter screen (3).

3. A water chiller with good stability according to claim 1, characterized in that: The collection assembly comprises a collection box (13), the collection box (13) is mounted on the chassis (1), and the roller brush (10) is located at an opening of the collection box (13).

4. A water chiller with good stability according to claim 3, characterized in that: The collection assembly further comprises a scraper (14), wherein the scraper (14) is fixedly connected to the collection box (13), and the scraper (14) is in contact with the roller brush (10).

5. A water chiller with good stability according to claim 4, characterized in that: The collection assembly further comprises a second filter (15), the second filter (15) being fixedly connected to the collection box (13), a vent (16) being provided on a side wall of the chassis (1) and located on one side of the second filter (15), the vent (16) being connected to the interior of the collection box (13) and the interior of the chassis (1).

6. A constant power control system for a chiller, applied to a chiller with good stability as claimed in any one of claims 1 to 5, characterized in that: The chiller constant power control system comprises a monitoring module, a control panel (17), a control module and a remote monitoring module; The monitoring module includes a temperature sensor, a flow sensor and a pressure sensor. The temperature sensor is used to monitor the outlet water temperature, return temperature, exhaust temperature and external temperature of the chiller in real time. The flow sensor is used to monitor the flow rate of cooling water in the chiller in real time. The pressure sensor is used to monitor the pressure change in the chiller system in real time. The control panel (17) is mounted on the chassis (1), and the control panel (17) is used to set relevant parameters of target temperature, flow rate, pressure and constant power; The control module is responsible for data processing and logic control of the entire system and has a built-in PID algorithm; The control module is used to receive the temperature, flow and pressure data monitored by the monitoring module and calculate the actual power of the current system according to the data through the formula W=Q=Cm△t=CρV△t; the control module is also used to compare the actual power with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, the circulation pump and the heater through the PID algorithm, so as to adjust the actual power to the target constant power value; The control panel (17) is used to receive and display various data, including temperature, flow, pressure and actual power. The control panel (17) is also used to trigger an alarm mechanism when various data exceed a set range. The remote monitoring module is used to realize remote monitoring and management of the chiller, including real-time data viewing, historical data query and alarm information push functions.

7. A constant power control system for a chiller according to claim 6, characterized in that: The control module is used to adjust the speed of the compressor through frequency conversion technology, thereby changing the cooling capacity and further affecting the power output; The control module is used to adjust the speed of the circulation pump to maintain a constant flow rate and pressure, and to assist in regulating the power; The control module is used to change the duty cycle of the PWM wave to control the solid-state absorption after self-tuning the control output through the PID algorithm, thereby controlling the heating time of the heater to change the temperature and maintain a constant power output.

8. A constant power control method for a chiller, applied to a constant power control system for a chiller according to any one of claims 6 to 7, characterized in that: The constant power control method of the chiller comprises the following steps: S1. System initialization: Turn on the power and start the chiller; set the target temperature, flow rate, pressure and constant power related parameters through the control panel (17) or the remote monitoring module; S2. Monitoring and feedback: Monitor the temperature of cooling water in real time through the temperature sensor and feed the data back to the control module; monitor the flow rate of cooling water in real time through the flow sensor and feed the data back to the control module; monitor the pressure of cooling water in real time through the pressure sensor and feed the data back to the control module; S3. Constant power control: Calculate the actual power of the current system based on the monitored temperature, flow and pressure data; The actual power is compared with the target constant power value. If the actual power deviates from the target constant power value, the control module automatically adjusts the power of the compressor, circulating pump and heater through the PID algorithm, so as to adjust the actual power to the target constant power value; S4. Data recording and alarm: regularly collect and record temperature, flow, pressure and actual power data; display the system operation status and various data in real time through the control panel (17); if the data exceeds the set range, the alarm mechanism is triggered; S5. Communication transmission: upload various data to the remote monitoring module.

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