Intelligent control type refrigerating device

Abstract

The invention relates to an intelligent control type refrigerating device which comprises a water chilling unit and an external online cleaning device, the water chilling unit comprises a condenser and an evaporator which are matched with each other, temperature sensors used for testing respective internal saturation temperature are arranged in the condenser and the evaporator respectively, and the temperature sensors are in communication connection with the online cleaning device. The on-line cleaning device comprises a ball dispenser, a ball receiver, and a pipeline and an electromagnetic valve which are connected with the water chilling unit; according to the refrigerating device, the instantaneous coefficient of performance (COP) or the periodic coefficient of performance (COPP) of the water chilling unit is accurately calculated and displayed in real time through a high-precision measurement means, and the water chilling unit is ensured to operate in a high coefficient of performance (COP) value interval through an intelligent adjustment control method. The heat exchange efficiency is improved, and the performance coefficient of the water chilling unit is improved.

Description

Technical Field

[0001] The present invention relates to all heat dissipation and refrigeration fields such as industry, civil use, transportation, water conservancy, etc., and in particular to an intelligent control refrigeration device. Background Art

[0002] Nowadays, refrigeration equipment in all fields such as industry, civil, transportation, and water conservancy has a complex structure, a high threshold for operation, and is difficult to clean, especially the condenser or evaporator used, which often cannot be cleaned independently of each other. In addition, the pipes and valves connected to the chiller have poor flow control accuracy between the pipes and valves and the chiller, and there are often obstacles in the valve flow channel, which restricts the movement of the cleaning rubber ball and reduces the efficiency of fluid flow, which can easily increase energy consumption indirectly due to local resistance.

[0003] Nowadays, refrigeration equipment in all fields such as industry, civil use, transportation, and water conservancy often lacks a relatively effective cleaning ball recovery mechanism, which makes it easy for cleaning balls to remain in the chiller, in the pipeline, or even block the valve. The manual maintenance cost is too high and it is easy to affect normal production and operation activities. In addition, the automated working mechanism often cannot be well coordinated with the overall structure of the equipment. There is a lack of intuitive and accurate ways to observe the flow, temperature and other parameters of the pipeline, condenser, and evaporator, which restricts the overall working efficiency of the equipment and easily leads to unnecessary cost increases.

[0004] There is no relatively effective solution to this problem yet. Summary of the invention

[0005] In view of the above technical problems in the related art, the present invention proposes an intelligent controlled refrigeration device, which can overcome the above deficiencies in the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows: The present invention provides an intelligent controlled refrigeration device, comprising a chiller and an external online cleaning device, wherein the chiller comprises a condenser and an evaporator that cooperate with each other, wherein the condenser and the evaporator are respectively provided with temperature sensors for testing the internal saturation temperature of each, wherein the temperature sensors are communicatively connected with the online cleaning device, and wherein the online cleaning device comprises a ball launcher; wherein the inlet end of the condenser is connected to one end of a cooling water input pipe and the outlet end is connected to one end of a cooling water output pipe, wherein the inlet end of the evaporator is connected to one end of a chilled water input pipe and the outlet end is connected to one end of a chilled water output pipe; The cooling water input pipe and the chilled water input pipe are respectively connected to the ball-launching pipeline, the cooling water output pipe is connected to the ball-receiving pipeline through the ball receiver 1, and the chilled water output pipe is connected to the ball-receiving pipeline through the ball receiver 2; the ball-launching pipeline and the ball-receiving pipeline are respectively connected to the ball-launching device; The cooling water input pipe, cooling water output pipe, chilled water output pipe, and chilled water input pipe are respectively equipped with a pressure gauge and a thermometer; A solenoid valve 1 is arranged between the cooling water input connecting pipe and the ball-delivering pipeline, a solenoid valve 2 is arranged between the freezing water input connecting pipe and the ball-delivering pipeline; a solenoid valve 3 is arranged between the ball receiver 1 and the ball-receiving pipeline, a solenoid valve 4 is arranged between the ball receiver 2 and the ball-receiving pipeline.

[0007] Preferably, a control box and an integrated display are provided on the top of the chiller, and the control box and the integrated display are connected.

[0008] Preferably, the pressure gauge and the thermometer are communicatively connected to the integrated display.

[0009] Preferably, the thermometer is communicatively connected to the online cleaning device; the motor valve 1, the solenoid valve 2, the solenoid valve 3, and the solenoid valve 4 are communicatively connected to the online cleaning device respectively.

[0010] Preferably, the other ends of the cooling water input pipe, the cooling water output pipe, the chilled water output pipe, and the chilled water input pipe are respectively provided with interface valves.

[0011] Preferably, the valve at the interface adopts a full-bore eccentric hemispherical valve.

[0012] Preferably, the cooling water input pipe, the cooling water output pipe, the chilled water output pipe and the chilled water input pipe respectively include matching long radius elbows and risers, and the risers serve as the main pipes.

[0013] Preferably, one end of the long radius elbow is connected to the condenser or evaporator, the other end of the long radius elbow is connected to the bottom end of the riser, and the top end of the riser is provided with an interface valve. That is, each interface valve is vertically installed at the top end of each riser. The interface valve is used to connect with an external pipeline, thereby realizing cooperation with external equipment.

[0014] Preferably, a full-bore flowmeter is provided on the cooling water output pipe or the chilled water output pipe, and the full-bore flowmeter is connected to the integrated display for communication, so as to measure the chilled water flow in real time. The full-bore flowmeter can make the flow measurement more reliable and avoid being affected by the flow shape of the medium in the pipeline and the installation position of the instrument. The full-bore flowmeter adopts a full-bore structure, and can achieve a measurement accuracy of within ±0.5% and even within ±0.2% at the highest by built-in multiple pairs of measuring electrodes without pressure loss. The integrated display can integrate and display the instantaneous flow data and cumulative flow data transmitted by the full-bore flowmeter.

[0015] Preferably, the installation requirement of the full-bore flowmeter is preferably that there is no straight pipe section installation requirement, that is, installation in a straight pipe or a curved pipe is allowed at the same time, thereby enhancing adaptability.

[0016] Preferably, the full-bore flowmeter preferably adopts a high-precision remote electromagnetic flowmeter.

[0017] Preferably, the control box includes a smart meter, which is electrically connected to the chiller, and is used to measure the power consumption and cumulative power consumption of the chiller in real time.

[0018] Preferably, a compressor is provided on top of the condenser.

[0019] Preferably, a control box, integrated display is preferably located on top of the evaporator.

[0020] Preferably, the online cleaning device also includes a pressurized rubber ball water pump.

[0021] Preferably, the online cleaning device is connected to the control box and the integrated display.

[0022] Preferably, the start and stop of the online cleaning device is automatically controlled by the end temperature difference of the condenser or evaporator. The end temperature difference is common knowledge in the industry and is an existing technical means for automatic control. The end temperature difference of the condenser is the absolute value of the difference between its internal saturation temperature and the water temperature of the cooling water output pipe (consistent with the cooling water temperature output by the condenser), and the end temperature difference of the evaporator is the absolute value of the difference between its internal saturation temperature and the water temperature of the chilled water output pipe (consistent with the chilled water temperature output by the evaporator). The water temperature of the cooling water output pipe and the water temperature of the chilled water output pipe are measured by their respective thermometers.

[0023] Preferably, when the end temperature difference of the condenser or the end temperature difference of the evaporator is greater than or equal to the start temperature threshold T1, the online cleaning device is started; when the end temperature difference of the condenser is less than or equal to the shut-down temperature threshold T2, and the end temperature difference of the evaporator is less than or equal to the shut-down temperature threshold T2, the online cleaning device is shut down. That is, only one of the end temperature difference of the condenser or the end temperature difference of the evaporator needs to be greater than or equal to the start temperature threshold T1 for the online cleaning device to be started; otherwise, the end temperature difference of the condenser and the end temperature difference of the evaporator need to be less than or equal to the shut-down temperature threshold T2 at the same time for the online cleaning device to be shut down.

[0024] Preferably, if the end temperature difference of the condenser is greater than or equal to the start temperature threshold T1, solenoid valve one and solenoid valve three are started respectively; otherwise, if the end temperature difference of the condenser is less than or equal to the close temperature threshold T2, solenoid valve one and solenoid valve three are closed respectively.

[0025] Preferably, if the end temperature difference of the evaporator is greater than or equal to the start temperature threshold T1, the solenoid valve 2 and the solenoid valve 4 are respectively started; otherwise, if the end temperature difference of the evaporator is less than or equal to the close temperature threshold T2, the solenoid valve 2 and the solenoid valve 4 are respectively closed.

[0026] Preferably, the start temperature threshold T1 is greater than the shut down temperature threshold T2.

[0027] Preferably, the start temperature threshold T1 and the shutdown temperature threshold T2 can be determined according to actual needs, and the specific method is preferably; when the ball collection rate of the condenser or evaporator that is being cleaned or recently completed is ≥ the set value, the online cleaning device switches solenoid valve 1, solenoid valve 3 and solenoid valve 2, solenoid valve 4 to start or shut down as a prerequisite.

[0028] Preferably, the start temperature threshold T1 and the shut down temperature threshold T2 are determined according to actual needs. Preferably, T1 = 1.8°C, T2 = 0.5°C.

[0029] Preferably, it has a cooling capacity calculation function, which can automatically calculate the instantaneous value and cumulative value of the cooling capacity of the chiller.

[0030] Preferably, the chiller has the function of calculating and displaying the instantaneous coefficient of performance (COP).

[0031] Preferably, the chiller has the function of calculating and displaying the performance coefficient throughout the year, and the period Period of the accumulated time is set according to the specific number of days of the cooling period each year.

[0032] Preferably, each time the online cleaning device is started and stopped, the number of balls received and served is counted and the ball collection rate is displayed. The counted ball collection rate reaching 100% is a prerequisite for switching the pipelines between solenoid valve 1, solenoid valve 3 and solenoid valve 2, solenoid valve 4.

[0033] Preferably, the chiller obtains its instantaneous power consumption, instantaneous chilled water flow, chilled water inlet temperature and chilled water outlet temperature, and calculates the instantaneous cooling capacity of the chiller according to the following formula 1; Instantaneous cooling capacity = C × instantaneous chilled water flow × (chilled water inlet temperature - chilled water outlet temperature); (Formula 1); Where C represents the specific heat capacity of water and is a constant.

[0034] Preferably, firstly, the instantaneous cooling capacity and instantaneous power consumption of the chiller are substituted into the following formula 2; Then calculate the real-time coefficient of performance COP of the chiller; Finally, the real-time performance coefficient COP is transmitted to the integrated display for display; Real-time performance coefficient COP = instantaneous cooling capacity / instantaneous power consumption; (Formula 2); Where C represents the specific heat capacity of water and is a constant.

[0035] Preferably, first set the period value to be observed; Then, the periodic cumulative cooling capacity, periodic cumulative power consumption and periodic performance coefficient COP of the chiller in the period Period are calculated according to the following formulas:a ; Period cumulative cooling capacity = Σ instantaneous cooling capacity, which represents the cumulative sum of all instantaneous cooling capacities of the chiller in the period Period; (Formula 3); Period cumulative power consumption = Σ instantaneous power consumption, which represents the cumulative sum of all instantaneous power consumption (i.e. instantaneous power consumption) of the chiller in the period Period; (Formula 4); Cycle Performance Coefficient COP a =Cycle cumulative cooling capacity / cycle cumulative power consumption; (Formula 5); Finally, the cycle performance coefficient COP a Transmitted to the integrated display for display.

[0036] Preferably, the value range of the period Period is preferably 1 to 12 months, or 30-360 days, depending on actual needs.

[0037] Preferably, the cycle performance coefficient COP a Preferably, it is a full-year performance coefficient. Correspondingly, the period Period is preferably 12 months, ie, a full year.

[0038] During implementation, obtain the real-time performance coefficient COP or periodic performance coefficient COP of the chiller a , a high-precision full-bore flowmeter with no straight pipe length installation requirement can be set up, and the inlet temperature of the chilled water input pipe and the outlet temperature of the chilled water output pipe can be measured by the separately set thermometers, that is, the inlet temperature, outlet temperature and flow data of the chilled water can be obtained, so as to measure and calculate the instantaneous value and cumulative value of the cooling capacity in real time. The specific measurement method can adopt the existing technology. The smart meter installed on the power supply circuit of the chiller measures the power and electricity consumption of the equipment, and calculates the instantaneous coefficient of performance COP and the periodic coefficient of performance COP in real time and displays them on the integrated display a The chilled water output pipe can be used for chilled water supply, and the chilled water input pipe can be used for chilled water return. According to the change of the chilled water return temperature at the evaporator inlet and combined with various COP data, the chiller can set the temperature of the chilled water supply to ensure that the chiller operates in a high COP value range.

[0039] Beneficial effects of the present invention: The present invention adopts an external online cleaning device, a one-launch and two-receive method, that is, a set of ball launchers and two sets of ball receivers, which are connected to the inside of the condenser through pipelines such as cooling water input pipes and cooling water output pipes, and are connected to the inside of the evaporator through chilled water output pipes and chilled water input pipes, thereby forming two independent and independent circulation cleaning paths. On the two circulation cleaning paths, the conduction or closing of the controller can be controlled separately by solenoid valves. The online cleaning device always keeps the condenser, evaporator and the inner wall of the pipeline clean, thereby improving the heat exchange efficiency of the media inside and outside the condenser and evaporator tubes and reducing thermal resistance; according to the change of the chilled water return water temperature at the inlet of the evaporator, combined with the COP data, the set value of the chilled water supply temperature of the chiller is intelligently adjusted to ensure that the chiller operates in a high COP value range, improve the performance coefficient of the chiller, and save power consumption to the maximum extent. According to the change of chilled water return temperature at the evaporator inlet and combined with COP data, the chilled water supply temperature setting of the chiller is intelligently adjusted to ensure that the chiller operates in a high COP value range.

[0040] Through the unique design of the present invention, the instantaneous value and cumulative value of cooling capacity can be measured and calculated in real time by using a high-precision full-bore flow meter with no straight pipe length installation requirements and chilled water inlet and outlet temperature sensors, and the instantaneous and cumulative data of cooling capacity can be displayed on the integrated display; the smart meter installed in the control box can measure the power and electricity consumption of the chiller in real time, and can be displayed on the control box or the integrated display. The integrated display measures the power and electricity consumption of the equipment through the smart meter installed on the power supply circuit of the chiller, and calculates and displays the instantaneous coefficient of performance COP of the chiller and the comprehensive coefficient of performance of the chiller in real time. The instantaneous coefficient of performance COP of the chiller can be automatically calculated and displayed based on the instantaneous cooling capacity and the instantaneous power supply power; the periodic coefficient of performance COP of the chiller can also be automatically calculated based on the annual cumulative cooling capacity of the chiller and its annual cumulative electricity consumption. a , and can be displayed on the integrated display. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 The structure of the refrigeration device of the present invention is shown in FIG. Figure 1 (Distinguish solenoid valves and ball collectors in different positions).

[0043] Figure 2The structure of the refrigeration device of the present invention is shown in FIG. Figure 2 (Does not distinguish between solenoid valves and ball collectors in different positions).

[0044] Figure 3 The three-dimensional refrigeration device of the present invention Figure 1 .

[0045] Figure 4 The three-dimensional refrigeration device of the present invention Figure 2 .

[0046] Figure 5 It is a right side view of the refrigeration device described in the present invention.

[0047] Figure 6 It is a top view of the refrigeration device described in the present invention.

[0048] In the figure: 1. condenser; 101. compressor; 2. evaporator; 3. control box; 301. smart meter; 4. integrated display; 5. cooling water input pipe; 6. cooling water output pipe; 7. chilled water output pipe; 8. chilled water input pipe; 9. ball launching pipeline; 10. ball collecting pipeline; 11. online cleaning device; 1101. ball launching device; 1102. pressurized rubber ball water pump; 12. pressure gauge; 13. thermometer; 14. full-bore flowmeter; 15. solenoid valve; 1501. solenoid valve one; 1502. solenoid valve two; 1503. solenoid valve three; 1504. solenoid valve four; 16. ball collecting device; 1601. ball collecting device one; 1602. ball collecting device two; 17. valve at the interface; 18. long radius elbow; 19. temperature sensor; 20. external pipeline. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying 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 belong to the scope of protection of the present invention.

[0050] like Figure 1-6 As shown, in order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0051] The intelligent controlled refrigeration device provided by the present disclosure includes a chiller and an external online cleaning device 11. The chiller includes a condenser 1 and an evaporator 2 that cooperate with each other. The condenser 1 and the evaporator 2 are respectively provided with a temperature sensor 19 for testing the internal saturation temperature of each other. The temperature sensor 19 is connected to the online cleaning device 11 for communication. The online cleaning device 11 includes a ball launcher 1101; the inlet end of the condenser 1 is connected to one end of the cooling water input pipe 5 and the outlet end is connected to one end of the cooling water output pipe 6, the inlet end of the evaporator 2 is connected to one end of the chilled water input pipe 8 and the outlet end is connected to one end of the chilled water output pipe 7; The cooling water input pipe 5 and the chilled water input pipe 8 are respectively connected to the ball-delivering pipeline 9, the cooling water output pipe 6 is connected to the ball-receiving pipeline 10 through the ball receiver 1 1601, and the chilled water output pipe 7 is connected to the ball-receiving pipeline 10 through the ball receiver 2 1602; the ball-delivering pipeline 9 and the ball-receiving pipeline 10 are respectively connected to the ball-delivering device 1101; The cooling water input pipe 5, the cooling water output pipe 6, the chilled water output pipe 7, and the chilled water input pipe 8 are respectively provided with a pressure gauge 12 and a thermometer 13; A solenoid valve 1501 is provided between the cooling water input pipe 5 and the ball-delivering pipeline 9, and a solenoid valve 2 1502 is provided between the freezing water input pipe 8 and the ball-delivering pipeline 9; a solenoid valve 3 1503 is provided between the ball receiver 1 1601 and the ball-receiving pipeline 10, and a solenoid valve 4 1504 is provided between the ball receiver 2 1602 and the ball-receiving pipeline 10.

[0052] In a certain embodiment, a control box 3 and an integrated display 4 are provided on the top of the chiller, and the control box 3 and the integrated display 4 are connected.

[0053] In one embodiment, the pressure gauge 12 and the thermometer 13 are communicatively connected with the integrated display 4 .

[0054] In a certain embodiment, the thermometer 13 is connected to the online cleaning device 11 for communication; the motor valve 1 1501 , the solenoid valve 2 1502 , the solenoid valve 3 1503 , and the solenoid valve 4 1504 are connected to the online cleaning device 11 for communication respectively.

[0055] In a certain embodiment, the other ends of the cooling water input pipe 5 , the cooling water output pipe 6 , the chilled water output pipe 7 , and the chilled water input pipe 8 are respectively provided with interface valves 17 .

[0056] In a certain embodiment, the valve 17 at the interface is a full-diameter eccentric semi-ball valve.

[0057] In one embodiment, the cooling water input pipe 5, the cooling water output pipe 6, the chilled water output pipe 7, and the chilled water input pipe 8 respectively include a matching long radius elbow 18 and a riser 19, and the riser 19 serves as a main pipe body.

[0058] In one embodiment, one end of the long radius elbow 18 is connected to the condenser 1 or the evaporator 2, and the other end of the long radius elbow 18 is connected to the bottom end of the vertical pipe 19, and the top end of the vertical pipe 19 is provided with an interface valve 17. That is, each interface valve 17 is vertically installed at the top end of each vertical pipe 19. The interface valve 17 is used to connect with the external pipeline 20, so as to achieve cooperation with external equipment.

[0059] In one embodiment, a full-bore flowmeter 14 is provided on the cooling water output pipe 6 or the chilled water output pipe 7, and the full-bore flowmeter 14 is connected to the integrated display 4 for communication, so as to measure the chilled water flow in real time. The full-bore flowmeter 14 can make the flow measurement more reliable and avoid being affected by the flow shape of the medium in the pipeline and the installation position of the instrument. The full-bore flowmeter 14 adopts a full-bore structure, and can have multiple pairs of measuring electrodes built in without pressure loss, so that the measurement accuracy can reach within ±0.5%, and can even reach within ±0.2% at the highest. The integrated display 4 can integrate and display the instantaneous flow data and cumulative flow data transmitted by the full-bore flowmeter 14.

[0060] In one embodiment, the installation requirement of the full-bore flowmeter 14 is preferably that there is no straight pipe section installation requirement, that is, it allows installation in a straight pipe or a curved pipe, thereby enhancing adaptability, that is, a high-precision full-bore flowmeter with no straight pipe section length installation requirement.

[0061] In one embodiment, the full-bore flowmeter 14 preferably adopts a high-precision remote electromagnetic flowmeter.

[0062] In one embodiment, the control box 3 includes a smart meter 301, which is electrically connected to the chiller. The smart meter 301 is used to measure the power consumption and cumulative power consumption of the chiller in real time.

[0063] In one embodiment, a compressor 101 is provided on the top of the condenser 1 .

[0064] In a certain embodiment, the control box 3 and the integrated display 4 are preferably located on the top of the evaporator 2 .

[0065] In one embodiment, the online cleaning device 11 further includes a pressurized rubber ball water pump 1102 .

[0066] In a certain embodiment, the online cleaning device 11 is connected to the control box 3 and the integrated display 4 .

[0067] In a certain embodiment, the start and stop of the online cleaning device 11 is automatically controlled by the end temperature difference of the condenser 1 or the evaporator 2. The end temperature difference is common knowledge in the industry and is an existing technical means for automatic control. The end temperature difference of the condenser 1 is the absolute value of the difference between its internal saturation temperature and the water temperature of the cooling water output pipe 6 (consistent with the cooling water temperature output by the condenser 1), and the end temperature difference of the evaporator 2 is the absolute value of the difference between its internal saturation temperature and the water temperature of the chilled water output pipe 7 (consistent with the chilled water temperature output by the evaporator 2). The water temperature of the cooling water output pipe 6 and the water temperature of the chilled water output pipe 7 are measured by the thermometers 13 respectively provided therefor.

[0068] In a certain embodiment, when the end temperature difference of the condenser 1 or the end temperature difference of the evaporator 2 is greater than or equal to the start temperature threshold T1, the online cleaning device 11 is started; when the end temperature difference of the condenser 1 is less than or equal to the shut-down temperature threshold T2, and the end temperature difference of the evaporator 2 is less than or equal to the shut-down temperature threshold T2, the online cleaning device 11 is shut down. That is, only one of the end temperature difference of the condenser 1 or the end temperature difference of the evaporator 2 needs to be greater than or equal to the start temperature threshold T1, and the online cleaning device 11 is started; otherwise, the end temperature difference of the condenser 1 and the end temperature difference of the evaporator 2 need to be less than or equal to the shut-down temperature threshold T2 at the same time, and the online cleaning device 11 can be shut down.

[0069] In a certain embodiment, if the end temperature difference of condenser 1 is greater than or equal to the starting temperature threshold T1, solenoid valve 1 1501 and solenoid valve 3 1503 are started respectively; conversely, if the end temperature difference of condenser 1 is less than or equal to the closing temperature threshold T2, solenoid valve 1 1501 and solenoid valve 3 1503 are closed respectively.

[0070] In a certain embodiment, if the end temperature difference of evaporator 2 is greater than or equal to the starting temperature threshold T1, solenoid valve 2 1502 and solenoid valve 4 1504 are started respectively; conversely, if the end temperature difference of evaporator 2 is less than or equal to the closing temperature threshold T2, solenoid valve 2 1502 and solenoid valve 4 1504 are closed respectively.

[0071] In one embodiment, the start temperature threshold T1 is greater than the shut down temperature threshold T2.

[0072] In a certain embodiment, the start temperature threshold T1 and the shutdown temperature threshold T2 can be determined according to actual needs, and the specific method is preferably: when the ball collection rate of the condenser 1 or evaporator 2 that is being cleaned or has been recently cleaned is ≥ the set value, the online cleaning device 11 switches the solenoid valve 1 1501, the solenoid valve 3 1503 and the solenoid valve 2 1502, and the solenoid valve 4 1504 to execute the prerequisite for starting or shutting down.

[0073] In one embodiment, preferably, T1=1.8°C, T2=0.5°C.

[0074] In a certain embodiment, a cooling capacity calculation function is provided, which can automatically calculate the instantaneous value and cumulative value of the cooling capacity of the chiller.

[0075] In one embodiment, the chiller has the function of calculating and displaying the instantaneous coefficient of performance (COP).

[0076] In one embodiment, the chiller has the function of calculating and displaying the annual performance coefficient.

[0077] In a certain embodiment, each time the online cleaning device is started and stopped, the number of balls received and served is counted and the ball collection rate is displayed. The counted ball collection rate reaches 100%, which is a prerequisite for the solenoid valve 1 1501, solenoid valve 3 1503 and solenoid valve 2 1502, solenoid valve 4 1504 to switch the pipelines with each other.

[0078] In one embodiment, a high-precision full-bore flowmeter with no straight pipe length installation requirement and chilled water inlet and outlet temperature sensors are used to measure and calculate the instantaneous value and cumulative value of cooling capacity in real time. The smart electric meter installed on the power supply circuit of the chiller measures the power consumption of the equipment and the power consumption, and the instantaneous coefficient of performance (COP) and periodic coefficient of performance (COP) of the chiller are calculated and displayed in real time. a According to the change of the chilled water return temperature at the inlet of evaporator 2 and combined with the COP data, the chilled water supply (i.e. chilled water outlet) temperature setting of the chiller is intelligently adjusted to ensure that the chiller operates in a high COP value range.

[0079] In one embodiment, the chiller obtains its instantaneous power consumption, instantaneous chilled water flow, chilled water inlet temperature and chilled water outlet temperature, and calculates the instantaneous cooling capacity of the chiller according to the following formula 1: Instantaneous cooling capacity = C × instantaneous chilled water flow × (chilled water inlet temperature - chilled water outlet temperature); (Formula 1); Where C represents the specific heat capacity of water and is a constant.

[0080] In a certain embodiment, firstly, the instantaneous cooling capacity and instantaneous power consumption of the chiller are substituted into the following formula 2; Then calculate the real-time coefficient of performance COP of the chiller; Finally, the real-time performance coefficient COP is transmitted to the integrated display 4 for display; Real-time performance coefficient COP = instantaneous cooling capacity / instantaneous power consumption; (Formula 2); Where C represents the specific heat capacity of water and is a constant.

[0081] In a certain embodiment, firstly, the period value to be observed is set; Then, the periodic cumulative cooling capacity, periodic cumulative power consumption and periodic performance coefficient COP of the chiller in the period Period are calculated according to the following formulas: a ; Period cumulative cooling capacity = Σ instantaneous cooling capacity, which represents the cumulative sum of all instantaneous cooling capacities of the chiller in the period Period; (Formula 3); Period cumulative power consumption = Σ instantaneous power consumption, which represents the cumulative sum of all instantaneous power consumption (i.e. instantaneous power consumption) of the chiller in the period Period; (Formula 4); Cycle Performance Coefficient COP a =Cycle cumulative cooling capacity / cycle cumulative power consumption; (Formula 5); Finally, the cycle performance coefficient COP a Transmit to the integrated display 4 for display.

[0082] In a certain embodiment, the value range of the period Period is preferably 1 to 12 months, or 30 to 360 days, depending on actual needs.

[0083] In one embodiment, the cycle performance coefficient COP a Preferably, it is a full-year performance coefficient. Correspondingly, the period Period is preferably 12 months, ie, a full year.

[0084] During implementation, obtain the real-time performance coefficient COP or periodic performance coefficient COP of the chiller a , a high-precision full-bore flowmeter 14 with no straight pipe length installation requirement can be set, and the inlet water temperature of the chilled water input pipe 8 and the outlet water temperature of the chilled water output pipe 7 can be measured by the separately set thermometers 13, that is, the inlet water temperature, outlet water temperature and flow data of the chilled water are obtained, so as to measure and calculate the instantaneous value and cumulative value of the cooling capacity in real time. The specific measurement method can adopt the existing technology. The smart meter 301 installed on the power supply circuit of the chiller measures the power and electricity consumption of the equipment, and the instantaneous performance coefficient COP and the periodic performance coefficient COP are calculated in real time and displayed on the integrated display 4. a The chilled water output pipe 7 can be used for chilled water supply, and the chilled water input pipe 8 can be used for chilled water return. According to the change of the chilled water return temperature at the inlet of the evaporator 2, combined with various COP data, the chiller can set the temperature of the chilled water supply, thereby ensuring that the chiller operates in a high COP value range.

[0085] Working principle: The existing full-bore eccentric hemispheric valve includes a valve body, a valve cover, a valve seat, a valve ball, an operating rod and a transmission device, etc. It is based on the eccentric movement of the valve ball relative to the valve seat to achieve the purpose of opening and closing the valve. When the operating rod pushes the transmission device, the valve ball rotates eccentrically, changing the flow rate of the fluid passing through the valve.

[0086] The role of the full-bore eccentric hemispherical valve in the present disclosure is that the center of the valve ball does not coincide with the center of the valve body, but deviates by a certain distance, so that the valve ball can be free from the restriction of the valve seat when moving, thereby reducing the friction and wear of the valve, and improving the flow rate and control accuracy of the valve. In the present disclosure, the interface valve 17 adopts a full-bore eccentric hemispherical valve to ensure that the valve flow channel is unobstructed when it is fully opened, which not only improves the efficiency of fluid passage, but also reduces the energy loss caused by local resistance. In contrast, the butterfly valve commonly used in engineering still occupies about 20% of the effective flow area in the fully open state due to its structural characteristics, thereby generating a large flow resistance. The interface valve 17 utilizes the eccentric crankshaft structure of the full-bore eccentric hemispherical valve, which helps to press the ball crown tightly against the valve seat through the pressure of water when the valve is closed, thereby achieving good sealing performance. Although the butterfly valve commonly used in engineering has good sealing performance, it is not as good as the full-bore eccentric hemispherical valve in sealing performance. According to the change of chilled water return temperature at the evaporator inlet and combined with COP data, the chilled water supply temperature setting of the chiller is intelligently adjusted to ensure that the chiller operates in a high COP value range.

[0087] In the present disclosure, when installing the valve 17 at the interface, attention should be paid to the direction of the valve 17 at each interface, the tightness and sealing performance of the interface, and it should be ensured that the valve handle has sufficient rotation space to avoid using the full-diameter eccentric hemispheric valve as a throttling device. The valve should be concentric with the flanges of each pipeline, and the cleanliness of the valve and pipeline should be checked.

[0088] In the present disclosure, the external online cleaning device 11 adopts a one-send and two-receive method, that is, a set of ball launchers 1101 and two sets of ball receivers 16, the two sets of ball receivers are ball receiver 1 1601 and ball receiver 2 1602, which are connected to the inside of the condenser 1 through the cooling water input pipe 5, the cooling water output pipe 6 and other pipelines, and are connected to the inside of the evaporator 2 through the chilled water output pipe 7 and the chilled water input pipe 8, thereby forming two independent circulation cleaning paths. Circulation cleaning path 1: passes through the ball launcher 1101, the ball launch pipeline 9, the solenoid valve 1 1501, the cooling water input pipe 5, the condenser 1, the cooling water output pipe 6, the ball receiver 1 1601, the solenoid valve 3 1503, the ball receiving pipeline 10, and finally returns to the ball launcher 1101. Circulation cleaning path two: passes through the ball launcher 1101, ball launcher pipeline 9, solenoid valve 2 1502, chilled water input pipe 8, evaporator 2, chilled water output pipe 7, ball receiver 2 1602, solenoid valve 4 1504, ball receiving pipe 10, and finally returns to the ball launcher 1101.

[0089] When the ball launcher 1101 sends the cleaning rubber ball through the ball launcher pipeline 9, the cleaning rubber ball can enter the condenser 1 and the evaporator 2 respectively through the cooling water input pipe 5 and the chilled water input pipe 9 for cleaning. After the cleaning is completed, the cleaning rubber ball flows out with the water flow and is recovered to the ball receiver 16 through the chilled water output pipe 6 and the chilled water output pipe 7. Since the electromagnetic valve 1 1501 is provided between the cooling water input pipe 5 and the ball launch pipeline 9, the electromagnetic valve 2 1502 is provided between the chilled water input pipe 8 and the ball launch pipeline 9; the electromagnetic valve 3 1503 is provided between the ball receiver 1 1601 and the ball receiving pipeline 10, and the electromagnetic valve 4 1504 is provided between the ball receiver 2 1602 and the ball receiving pipeline 10, it is easy to realize pipeline switching or switching, and adjust the cleaning plan for the condenser 1 and the evaporator 2 at will, so as to facilitate the counting of the sending and receiving balls and the statistics of the sending and receiving ball ratio, and timely discover and prevent the cleaning rubber ball from staying in the condenser 1 or the evaporator 2 to affect the equipment efficiency.

[0090] During implementation, the pressurized rubber ball water pump 1102 is used to pressurize the cleaning rubber ball, and the cleaning rubber ball is sent from the ball launcher 1101 to the condenser 1 or the evaporator 2. The scale, dirt and microbial film on the inner wall are scrubbed off by the flushing force generated by the water flow and the friction between the cleaning rubber ball and the inner wall of the condenser 1, the evaporator 2 and each pipeline. By using the principle of water flow mechanics and the assistance of each solenoid valve 15, the cleaning rubber ball flowing out from the outlet of the condenser 1 or the evaporator 2 can be recovered to the ball receiver 16, or the cleaning rubber ball in the ball receiver 16 can be recovered to each ball launcher 16 by using the ball receiving pipeline 10, thereby completing a complete cleaning and recycling cycle. The start and stop of the online cleaning device 11 can be controlled by the end temperature difference of the condenser 1 or the evaporator 2, and the start temperature threshold T1 and the shutdown temperature threshold T2 corresponding to the online cleaning device 11 are set. For example, set T1=1.8℃, T2=0.5℃, then when the temperature difference at the end of condenser 1 or evaporator 2 reaches 1.8℃, open the online cleaning device to connect the ball launcher 1101, ball receiver 16, and solenoid valve 15 of condenser 1 (or evaporator 2), start the online cleaning device 11, and when the temperature difference at the condenser end drops to 0.5℃, close the online cleaning device 11 and the electric valve on the pipeline on the corresponding circulation cleaning path.

[0091] When installing the online cleaning device 11, make sure that the water inlet and outlet pipes are correctly connected to the ball launcher and ball receiver, and use matching valves for control to prevent leakage from causing water mixing in the two cleaning paths, thereby affecting their independence. The online cleaning device 11 always keeps the condenser 1, evaporator 2 and the inner wall of the pipeline clean, thereby improving the heat exchange efficiency of the media inside and outside the condenser 1 and evaporator 2 tubes, reducing thermal resistance, improving the performance coefficient of the chiller, and saving power consumption to the maximum extent. In summary, with the aid of the above technical solution of the present invention, the present invention adopts a one-send and two-receive method, i.e., one set of ball launchers and two sets of ball receivers, through an external online cleaning device, which is connected to the inside of the condenser through pipelines such as a cooling water input pipe and a cooling water output pipe, and is connected to the inside of the evaporator through a chilled water output pipe and a chilled water input pipe, thereby forming two independent and mutually independent circulation cleaning paths. On the two circulation cleaning paths, the conduction or closing of the controller can be controlled separately by solenoid valves. The online cleaning device always keeps the condenser, evaporator and the inner wall of the pipeline clean, thereby improving the heat exchange efficiency of the media inside and outside the condenser and evaporator tubes and reducing the thermal resistance; according to the change of the chilled water return water temperature at the inlet of the evaporator, combined with the COP data, the set value of the chilled water supply temperature of the chiller is intelligently adjusted to ensure that the chiller operates in a high COP value range, improve the performance coefficient of the chiller, and save power consumption to the maximum extent.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent controlled refrigeration device, characterized in that: The invention comprises a water chiller and an external online cleaning device (11), wherein the water chiller comprises a condenser (1) and an evaporator (2) which cooperate with each other, wherein the condenser (1) and the evaporator (2) are respectively provided with a temperature sensor (19) for testing the internal saturation temperature of each, wherein the temperature sensor (19) is communicatively connected with the online cleaning device (11), and the online cleaning device (11) comprises a ball launcher (1101); the inlet end of the condenser (1) is connected to one end of a cooling water input pipe (5) and the outlet end is connected to one end of a cooling water output pipe (6), and the inlet end of the evaporator (2) is connected to one end of a chilled water input pipe (8) and the outlet end is connected to one end of a chilled water output pipe (7); The cooling water input pipe (5) and the freezing water input pipe (8) are respectively connected to the ball-delivering pipeline (9); the cooling water output pipe (6) is connected to the ball-receiving pipeline (10) via the first ball receiver (1601); the freezing water output pipe (7) is connected to the ball-receiving pipeline (10) via the second ball receiver (1602); the ball-delivering pipeline (9) and the ball-receiving pipeline (10) are respectively connected to the ball-delivering device (1101); The cooling water input pipe (5), the cooling water output pipe (6), the chilled water output pipe (7), and the chilled water input pipe (8) are respectively provided with a pressure gauge (12) and a thermometer (13); A solenoid valve 1 (1501) is provided between the cooling water input pipe (5) and the ball-delivering pipeline (9), and a solenoid valve 2 (1502) is provided between the freezing water input pipe (8) and the ball-delivering pipeline (9); a solenoid valve 3 (1503) is provided between the ball receiver 1 (1601) and the ball-receiving pipeline (10), and a solenoid valve 4 (1504) is provided between the ball receiver 2 (1602) and the ball-receiving pipeline (10); A control box (3) and an integrated display (4) are provided on the top of the chiller, and the control box (3) and the integrated display (4) are connected; the pressure gauge (12) and the thermometer (13) are communicatively connected with the integrated display (4); The thermometer (13) is connected to the online cleaning device (11) in communication; the motor valve 1 (1501), the solenoid valve 2 (1502), the solenoid valve 3 (1503), and the solenoid valve 4 (1504) are respectively connected to the online cleaning device (11) in communication.

2. The refrigeration device according to claim 1, characterized in that: The other ends of the cooling water input pipe (5), the cooling water output pipe (6), the chilled water output pipe (7), and the chilled water input pipe (8) are respectively provided with an interface valve (17), and the interface valve (17) is a full-diameter eccentric hemispherical valve.

3. The refrigeration device according to claim 2, characterized in that: The cooling water input pipe (5), the cooling water output pipe (6), the chilled water output pipe (7), and the chilled water input pipe (8) respectively include a matching long radius elbow (18) and a riser (19), and the riser (19) serves as a main pipe body; One end of the long radius elbow (18) is connected to the condenser (1) or the evaporator (2), and the other end of the long radius elbow (18) is connected to the bottom end of the riser (19), and the interface valve (17) is provided at the top end of the riser (19).

4. The refrigeration device according to claim 1, characterized in that: A full-bore flow meter (14) is provided on the cooling water output pipe (6) or the chilled water output pipe (7), and the full-bore flow meter (14) is communicatively connected with the integrated display (4), thereby measuring the chilled water flow in real time.

5. The refrigeration device according to claim 1, characterized in that: The control box (3) includes a smart meter (301), which is connected to the chiller and is used to measure the power consumption and cumulative power consumption of the chiller in real time; a compressor (101) is provided on the top of the condenser (1); the control box (3) and the integrated display (4) are located on the top of the evaporator (2); and the online cleaning device (11) also includes a pressurized rubber ball water pump (1102).

6. The refrigeration device according to claim 1, characterized in that: The start and stop of the online cleaning device (11) is automatically controlled by the end temperature difference of the condenser (1) or the evaporator (2), and the automatic control logic is specifically as follows: When the end temperature difference of the condenser (1) or the end temperature difference of the evaporator (2) is greater than or equal to a start temperature threshold value T1, the online cleaning device (11) is started; When the end temperature difference of the condenser (1) is less than or equal to the closing temperature threshold T2, and the end temperature difference of the evaporator (2) is less than or equal to the closing temperature threshold T2, the online cleaning device (11) is closed; If the temperature difference at the end of the condenser (1) is greater than or equal to the start temperature threshold value T1, the solenoid valve 1 (1501) and the solenoid valve 3 (1503) are respectively started; conversely, if the temperature difference at the end of the condenser (1) is less than or equal to the close temperature threshold value T2, the solenoid valve 1 (1501) and the solenoid valve 3 (1503) are respectively closed; If the end temperature difference of the evaporator (2) is greater than or equal to the start temperature threshold value T1, the solenoid valve 2 (1502) and the solenoid valve 4 (1504) are respectively started; conversely, if the end temperature difference of the evaporator (2) is less than or equal to the close temperature threshold value T2, the solenoid valve 2 (1502) and the solenoid valve 4 (1504) are respectively closed; Among them, the start temperature threshold T1> the shut down temperature threshold T2, the end temperature difference of the condenser (1) is the absolute value of the difference between its internal saturation temperature and the water temperature of the cooling water output pipe (6); the end temperature difference of the evaporator (2) is the absolute value of the difference between its internal saturation temperature and the water temperature of the chilled water output pipe (7).

7. The refrigeration device according to claim 6, characterized in that: T1=1.8℃, T2=0.5℃.

8. The refrigeration device according to any one of claims 1 to 7, characterized in that: The chiller obtains its instantaneous power consumption, instantaneous chilled water flow, chilled water inlet temperature and chilled water outlet temperature, and calculates the instantaneous cooling capacity of the chiller according to the following formula 1; Instantaneous cooling capacity = C × instantaneous chilled water flow × (chilled water inlet temperature - chilled water outlet temperature); (Formula 1); Where C represents the specific heat capacity of water and is a constant.

9. The refrigeration device according to claim 8, characterized in that: First, substitute the instantaneous cooling capacity and instantaneous power consumption of the chiller into the following formula 2; Then, the real-time coefficient of performance COP of the chiller is calculated; Finally, the real-time performance coefficient COP is transmitted to the integrated display (4) for display; Real-time performance coefficient COP = instantaneous cooling capacity / instantaneous power consumption; (Formula 2); Where C represents the specific heat capacity of water and is a constant.

10. The refrigeration device according to claim 8, characterized in that: First, set the period value to be observed; Then, the period cumulative cooling capacity, period cumulative power consumption and period performance coefficient COP of the chiller in period Period are calculated according to the following formulas: a ; Cycle cumulative cooling capacity = Σ instantaneous cooling capacity; (Formula 3); Periodic cumulative power consumption = Σ instantaneous power consumption; (Formula 4); Cycle Performance Coefficient COP a =Cumulative cooling capacity of the cycle / Cumulative power consumption of the cycle; (Formula 5); Finally, the cycle performance coefficient COP a transmitting the data to the integrated display (4) for display; The value range of the period is 1 to 12 months.

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