Fluorine pump and compressor refrigeration composite system and control method thereof

Abstract

The invention relates to a fluorine pump and compressor refrigeration composite system which comprises a shell and tube condenser, a shell and tube evaporator, a compressor, a main fluorine pump, a standby fluorine pump, a throttling device, an electromagnetic valve, an air-cooled condenser module, an air-cooled cooling device, a cooling water pump and a controller. The liquid inlet end of the shell-tube evaporator is communicated with the liquid outlet end of the throttling device, the liquid inlet end of the throttling device is communicated with the liquid outlet ends of the main fluorine pump and the standby fluorine pump, the liquid inlet ends of the main fluorine pump and the standby fluorine pump are communicated with the liquid outlet end of the shell-tube condenser, and the water inlet end of the shell-tube condenser is communicated with the water outlet end of the cooling water pump. The water inlet end of the cooling water pump communicates with the water outlet end of the air cooling device, and the water inlet end of the air cooling device communicates with the water outlet end of the shell and tube condenser. A compressor refrigerating system and a fluorine pump system are combined, three-mode operation is achieved, a natural cold source is fully utilized, the problem caused by switching of different modes is solved, and energy consumption is better saved.

Description

Technical Field

[0001] The present invention relates to the technical field of central air-conditioning refrigeration in data centers, and particularly to a composite system of a fluorine pump and a compressor for refrigeration and its control method. Background Art

[0002] In fields such as data centers, in order to maintain a constant indoor temperature, refrigeration units need to operate throughout the year to cool the equipment in the computer room to ensure the normal operation of the computer room equipment, which brings huge electricity costs. Under the dual pressures of energy consumption reduction and operation cost reduction, it is necessary to continuously research and develop new energy-saving technologies and products to make full use of the rich natural cold sources in nature. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a composite system of a fluorine pump and a compressor for refrigeration and its control method, which combines a compression refrigeration system and a fluorine pump system, uses the inlet water temperature of the cooling water and the ambient temperature as switching points to achieve three-mode operation, makes full use of natural cold sources. In the summer mode, the air-cooled condenser operates in a wet condition to undertake part of the load, and the shell-and-tube condenser serves as a liquid receiver while exchanging heat, and combines air and water cooling. In the spring and autumn modes, the load is borne by air cooling and water cooling. In the winter mode, all the loads can be borne by air cooling, solves the problems caused by different mode switching, better saves energy consumption, and realizes that the hybrid mode cop≥10.

[0004] The technical solution of the embodiment of the present invention is as follows:

[0005] A composite system of a fluorine pump and a compressor for refrigeration, including a shell-and-tube condenser, a shell-and-tube evaporator, a compressor, a main fluorine pump, a standby fluorine pump, a throttling device, a solenoid valve, an air-cooled condenser module, an air-cooling device, a cooling water pump, and a controller. The intake end of the shell-and-tube condenser is connected to the outlet end of the air-cooled condenser module through a pipeline. The intake end of the air-cooled condenser module is connected to one end of the second solenoid valve through a pipeline. The other end of the second solenoid valve is connected to the outlet end of the shell-and-tube evaporator through a pipeline. The liquid inlet end of the shell-and-tube evaporator is connected to the liquid outlet end of the throttling device through a pipeline. The liquid inlet end of the throttling device is connected to the liquid outlet ends of the main fluorine pump and the standby fluorine pump through a pipeline. The liquid inlet ends of the main fluorine pump and the standby fluorine pump are connected to the liquid outlet end of the shell-and-tube condenser through a pipeline. The water inlet end of the shell-and-tube condenser is connected to the water outlet end of the cooling water pump through a pipeline. The water inlet end of the cooling water pump is connected to the water outlet end of the air-cooling device. The water inlet end of the air-cooling device is connected to the water outlet end of the shell-and-tube condenser through a pipeline;

[0006] The air outlet end of the shell-and-tube evaporator is connected to the air inlet end of the compressor through a pipeline. One path of the air outlet end of the compressor is connected to the air inlet end of the air-cooled condenser module through a pipeline, and the other path of the air outlet end of the compressor is connected to one end of the first solenoid valve through a pipeline. The other end of the first solenoid valve is connected to the air inlet end of the shell-and-tube condenser through a pipeline;

[0007] The main fluorine pump, the standby fluorine pump, the first solenoid valve, the second solenoid valve, the compressor, the cooling water pump, the air-cooling device are electrically connected to the controller;

[0008] The water inlet end of the shell-and-tube evaporator is connected to the external chilled water return pipeline through a pipeline, and the water outlet end of the shell-and-tube evaporator is connected to the external chilled water supply pipeline through a pipeline.

[0009] Preferably, the air-cooling device includes a filler, a water distributor, a water storage tank, and a fan. The water distributor is located above the filler, the water storage tank is located below the filler, the fan is located at the top of the air-cooling device. The water storage tank is connected to the water inlet end of the cooling water pump through a pipeline, the water distributor is connected to the water outlet end of the shell-and-tube condenser through a pipeline, and the fan is electrically connected to the controller.

[0010] Preferably, the air-cooled condenser module includes an air-cooled condenser, an air-cooled water distributor, an air-cooled water storage tank, and an air-cooled water pump. The air-cooled water distributor is located above the air-cooled condenser, the air-cooled water storage tank is located below the air-cooled condenser. The air-cooled water distributor is connected to the water outlet end of the air-cooled water pump through a pipeline, the water inlet end of the air-cooled water pump is connected to the air-cooled water storage tank through a pipeline, and the air-cooled water pump is electrically connected to the controller.

[0011] In addition, the present invention also provides a control method for a fluorine pump and compressor refrigeration composite system, including step S100: the controller makes a real-time judgment on the ambient temperature;

[0012] Step S200: According to the judgment result, output a plurality of control signals of the corresponding mode to the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled water pump;

[0013] Step S300: The compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled water pump receive the control signals, and the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled water pump are turned on or off, so that the system operates in the corresponding mode.

[0014] Preferably, the step S200 includes: when the ambient temperature > the first set temperature, the controller outputs an opening signal to the compressor, the main fluorine pump or the standby fluorine pump, the first solenoid valve, the cooling water pump, the fan, and the air-cooled water pump, and outputs a closing signal to the second solenoid valve; when the second set temperature <= the ambient temperature <= the first set temperature, the controller outputs an opening signal to the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, and the air-cooled water pump, and the second solenoid valve, and outputs a closing signal to the compressor and the first solenoid valve; when the ambient temperature < the second set temperature, the controller outputs an opening signal to the main fluorine pump or the standby fluorine pump, the air-cooled water pump, and the second solenoid valve, and outputs a closing signal to the compressor, the first solenoid valve, the cooling water pump, and the fan.

[0015] Preferably, the step S300 includes: the compressor, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump, and the first solenoid valve receive the opening signal, the second solenoid valve receives the closing signal, the compressor, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump operate, the first solenoid valve is turned on, the second solenoid valve is turned off, and the system operates in the summer mode; the second solenoid valve, the cooling water pump, the fan, the air-cooled water pump, and the main fluorine pump or the standby fluorine pump receive the opening signal, the compressor and the first solenoid valve receive the closing signal, the second solenoid valve, the cooling water pump, the fan, the air-cooled water pump, and the main fluorine pump or the standby fluorine pump operate, the compressor and the first solenoid valve are turned off, and the system operates in the spring and autumn modes; the air-cooled water pump, the second solenoid valve, and the main fluorine pump or the standby fluorine pump receive the opening signal, the compressor, the first solenoid valve, the cooling water pump, and the fan receive the closing signal, the air-cooled water pump, the second solenoid valve, and the main fluorine pump or the standby fluorine pump operate, the compressor, the first solenoid valve, the cooling water pump, and the fan are turned off, and the system operates in the winter mode.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] By setting up a compressor and a fluorine pump, a hybrid and pure natural cooling working mode is formed. In the natural cooling working mode, by setting up an air-cooled cooling device and controlling the opening and closing of the air-cooled cooling device, a spring and autumn mode and a winter mode are formed. It can switch the working mode according to the outdoor ambient temperature. When the outdoor temperature is greater than or equal to the first set temperature, it is a hybrid refrigeration mode. When the outdoor temperature is less than the first set temperature and greater than the second set temperature, it is a pure natural cooling mode where air-cooling and water-cooling operate together. When the outdoor temperature is less than the second set temperature, it is a pure natural cooling air-cooling operation mode. By intelligently switching the working mode, while meeting the high-temperature refrigeration requirements in summer, it makes full use of natural cooling and significantly saves energy and reduces consumption. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the principle of a fluorine pump and compressor refrigeration composite system in the present invention;

[0019] Figure 2Schematic diagram of the operation principle of a fluorine pump and compressor refrigeration composite system in the present invention under summer mode;

[0020] Figure 3 Schematic diagram of the operation principle of a fluorine pump and compressor refrigeration composite system in the present invention under spring and autumn modes;

[0021] Figure 4 Schematic diagram of the operation principle of a fluorine pump and compressor refrigeration composite system in the present invention under winter mode;

[0022] Figure 5 Flow chart of the control method of a fluorine pump and compressor refrigeration composite system in the present invention;

[0023] 10. Shell-and-tube condenser; 20. Shell-and-tube evaporator; 30. Compressor; 40. Main fluorine pump; 41. Standby fluorine pump; 50. Throttling device; 51. External chilled water return pipeline; 52. External chilled water supply pipeline; 60. First solenoid valve; 61. Second solenoid valve; 70. Air-cooled condenser; 71. Air-cooled water distributor; 72. Air-cooled water pump; 73. Air-cooled water storage tank; 80. Packing; 81. Water distributor; 82. Fan; 83. Water storage tank; 90. Cooling water pump. Detailed implementation manners

[0024] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] As Figure 1 shown, Figure 1Schematic diagram of the principle of a refrigeration composite system of a fluorine pump and a compressor in the present invention; A refrigeration composite system of a fluorine pump and a compressor includes a shell-and-tube condenser 10, a shell-and-tube evaporator 20, a compressor 30, a main fluorine pump 40, a standby fluorine pump 41, a throttling device 50, a first solenoid valve 60, a second solenoid valve 61, an air-cooled condenser module, an air-cooled cooling device, a cooling water pump 90, and a controller. The intake end of the shell-and-tube condenser 10 is connected to the outlet end of the air-cooled condenser module through a pipeline. The intake end of the air-cooled condenser module is connected to one end of the second solenoid valve 61 through a pipeline. The other end of the second solenoid valve 61 is connected to the outlet end of the shell-and-tube evaporator 20 through a pipeline. The liquid inlet end of the shell-and-tube evaporator 20 is connected to the liquid outlet end of the throttling device 50 through a pipeline. The liquid inlet end of the throttling device 50 is connected to the liquid outlet ends of the main fluorine pump 40 and the standby fluorine pump 41 through a pipeline. The liquid inlet ends of the main fluorine pump 40 and the standby fluorine pump 41 are connected to the liquid outlet end of the shell-and-tube condenser 10 through a pipeline. The water inlet end of the shell-and-tube condenser 10 is connected to the water outlet end of the cooling water pump 90 through a pipeline. The water inlet end of the cooling water pump 90 is connected to the water outlet end of the air-cooled cooling device. The water inlet end of the air-cooled cooling device is connected to the water outlet end of the shell-and-tube condenser 10 through a pipeline. The outlet end of the shell-and-tube evaporator 20 is connected to the intake end of the compressor 30 through a pipeline. One path of the outlet end of the compressor 30 is connected to the intake end of the air-cooled condenser module through a pipeline. The other path of the outlet end of the compressor 30 is connected to one end of the first solenoid valve 60 through a pipeline. The other end of the first solenoid valve 60 is connected to the intake end of the shell-and-tube condenser 10 through a pipeline. The main fluorine pump 40, the standby fluorine pump 41, the first solenoid valve 60, the second solenoid valve 61, the compressor 30, the cooling water pump 90, the air-cooled cooling device are electrically connected to the controller. The water inlet end of the shell-and-tube evaporator 20 is connected to the external chilled water return pipeline through a pipeline. The water outlet end of the shell-and-tube evaporator 20 is connected to the external chilled water supply pipeline through a pipeline.

[0028] The present invention operates in the corresponding mode according to the ambient temperature. This system operates in three modes according to three temperature ranges, namely summer mode, spring-autumn mode, and winter mode. The controller outputs signals to control the electrical appliances in the system according to the instant ambient temperature detected by the temperature sensor. When operating in the summer mode, the compressor, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled cooling device, and the first solenoid valve are all turned on, and the second solenoid valve is turned off. At this time, the system provides a cold source for both the compressor and natural cooling, as Figure 2 shown, Figure 2This is a schematic diagram of the operating principle of a fluorine pump and compressor refrigeration composite system in the summer mode in the present invention; in the summer mode, the high-pressure and low-temperature liquid refrigerant in the shell-and-tube evaporator exchanges heat with the high-temperature return chilled water from the outside. The liquid refrigerant absorbs heat and turns into a high-temperature and low-pressure gaseous refrigerant. The gaseous refrigerant enters the compressor and is compressed into a high-pressure and high-temperature gaseous refrigerant by the compressor. It is then transported in two paths to the air-cooled condenser module and the shell-and-tube condenser. In the air-cooled condenser module, it exchanges heat with the relatively low-temperature natural wind from the outside for the first time and becomes a medium-temperature and medium-pressure gaseous refrigerant, which is then transported to the shell-and-tube condenser. Together with the high-pressure and high-temperature gaseous refrigerant, it exchanges heat with the cooling water entering the shell-and-tube condenser for the second time. The cooling water is provided by the air-cooled cooling device. The gaseous refrigerant in the shell-and-tube condenser condenses into a liquid refrigerant, and the liquid refrigerant is pumped to the throttling device by the fluorine pump, throttled into a high-pressure liquid refrigerant, and enters the shell-and-tube evaporator, thus cycling. Among them, the main fluorine pump and the standby fluorine pump are redundant to each other. When one is operating, the other is in the closed state, which facilitates the maintenance of the fluorine pump and ensures the safe operation of the entire system.

[0029] When operating in the spring and autumn mode, the main fluorine pump or the standby fluorine pump, the cooling water pump, the air-cooled cooling device, and the second solenoid valve are all turned on, and the compressor and the first solenoid valve are turned off. At this time, the system provides a cold source jointly by air-cooling and water-cooling natural cooling, as Figure 3 shown. Figure 3 This is a schematic diagram of the operating principle of a fluorine pump and compressor refrigeration composite system in the spring and autumn mode in the present invention; in the spring and autumn mode, the high-pressure and low-temperature liquid refrigerant in the shell-and-tube evaporator exchanges heat with the high-temperature return chilled water from the outside. The liquid refrigerant absorbs heat and turns into a high-temperature and low-pressure gaseous refrigerant. The gaseous refrigerant enters the air-cooled condenser. In the air-cooled condenser module, it exchanges heat with the relatively low-temperature natural wind from the outside for the first time and becomes a medium-temperature and medium-pressure gaseous refrigerant, which is then transported to the shell-and-tube condenser. It exchanges heat with the cooling water entering the shell-and-tube condenser for the second time. The cooling water is provided by the air-cooled cooling device. The gaseous refrigerant in the shell-and-tube condenser condenses into a liquid refrigerant, and the liquid refrigerant is pumped to the throttling device by the fluorine pump, throttled into a high-pressure liquid refrigerant, and enters the shell-and-tube evaporator, thus cycling.

[0030] When operating in the winter mode, the main fluorine pump or the standby fluorine pump and the second solenoid valve are all turned on, and the compressor, the first solenoid valve, the cooling water pump, and the air-cooled cooling device are turned off. At this time, the system provides a cold source for air-cooled natural cooling, as Figure 4 shown. Figure 4It is a schematic diagram of the principle of a fluorine pump and compressor refrigeration composite system in the present invention operating in winter mode; in winter mode, the high-pressure and low-temperature liquid refrigerant in the shell-and-tube evaporator exchanges heat with the return chilled water with a high external temperature. The liquid refrigerant absorbs heat and turns into a high-temperature and low-pressure gaseous refrigerant. The gaseous refrigerant enters the air-cooled condenser. In the air-cooled condenser module, it exchanges heat with the extremely low-temperature natural wind outside and condenses into a liquid refrigerant, which is then transported to the shell-and-tube condenser. The liquid refrigerant is pumped to the throttling device by the fluorine pump, throttled into a high-pressure liquid refrigerant, and enters the shell-and-tube evaporator, thus circulating.

[0031] Regarding how the air-cooled cooling device provides a cooling water source, specifically, the air-cooled cooling device includes a packing 80, a water distributor 81, a water storage tank 83, and a fan 82. The water distributor 81 is located above the packing 80, the water storage tank 83 is located below the packing 80, the fan 82 is located at the top of the air-cooled cooling device. The water storage tank 83 is connected to the inlet end of the cooling water pump 90 through a pipeline. The water distributor 81 is connected to the outlet end of the shell-and-tube condenser 10 through a pipeline. The fan 82 is electrically connected to the controller.

[0032] The cooling water that exchanges heat with the gaseous refrigerant and is heated up in the shell-and-tube condenser is pumped to the water distributor by the cooling water pump, sprayed on the packing, and evaporatively cooled with the external natural wind. The cooled water in the packing flows into the water storage tank and is transported to the shell-and-tube condenser, thus circulating.

[0033] To further improve the heat exchange and cooling efficiency of the air-cooled condenser module, preferably, the air-cooled condenser module includes an air-cooled condenser 70, an air-cooled water distributor 71, an air-cooled water storage tank 73, and an air-cooled water pump 72. The air-cooled water distributor 71 is located above the air-cooled condenser 70, the air-cooled water storage tank 73 is located below the air-cooled condenser 70. The air-cooled water distributor 71 is connected to the outlet end of the air-cooled water pump 72 through a pipeline. The inlet end of the air-cooled water pump 72 is connected to the air-cooled water storage tank 73 through a pipeline. The air-cooled water pump 72 is electrically connected to the controller.

[0034] Based on the external air-cooled heat exchange and adding water-cooling for heat exchange and cooling of the air-cooled condenser, the air-cooled water distributor sprays the air-cooled condenser. The sprayed water evaporatively cools with the external natural wind and remains in the air-cooled water storage tank, and is pumped to the air-cooled water distributor by the air-cooled water pump, thus circulating.

[0035] In addition, the present invention also provides a control method for a fluorine pump and compressor refrigeration composite system. The above system operates this control method to control the system operation in various modes. As Figure 5 shown, Figure 5It is a flowchart of a control method for a composite refrigeration system of a fluorine pump and a compressor in the present invention; a control method for a composite refrigeration system of a fluorine pump and a compressor includes step S100: the controller makes a real-time judgment on the ambient temperature; step S200: according to the judgment result, output multiple control signals of the corresponding mode to the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, and the air-cooled water pump; step S300: the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, and the air-cooled water pump receive the control signals, and the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, and the air-cooled water pump are turned on or off, so that the system operates in the corresponding mode.

[0036] The system detects the ambient temperature in real time through a temperature sensor, and the temperature value is transmitted to the controller in real time. The controller outputs an on signal or an off signal to the compressor, the first solenoid valve, the second solenoid valve, the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, and the air-cooled water pump in the system according to the range of the temperature value, so that the system operates in the mode corresponding to the ambient temperature.

[0037] Preferably, the step S200 includes: when the ambient temperature > the first set temperature, the controller outputs an on signal to the compressor, the main fluorine pump or the standby fluorine pump, the first solenoid valve, the cooling water pump, the fan, and the air-cooled water pump, and outputs an off signal to the second solenoid valve; when the second set temperature <= the ambient temperature <= the first set temperature, the controller outputs an on signal to the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled water pump, and the second solenoid valve, and outputs an off signal to the compressor and the first solenoid valve; when the ambient temperature < the second set temperature, the controller outputs an on signal to the main fluorine pump or the standby fluorine pump, the air-cooled water pump, and the second solenoid valve, and outputs an off signal to the compressor, the first solenoid valve, the cooling water pump, and the fan.

[0038] Generally, the first set temperature is set to 15°C, and the second set temperature is set to 5°C. When the ambient temperature > 15°C, the controller outputs an on signal to the compressor, the main fluorine pump or the standby fluorine pump, the first solenoid valve, the cooling water pump, the fan, and the air-cooled water pump, and outputs an off signal to the second solenoid valve. At this time, the system operates in the summer mode; when 5°C <= the ambient temperature <= 15°C, the controller outputs an on signal to the main fluorine pump or the standby fluorine pump, the cooling water pump, the fan, the air-cooled water pump, and the second solenoid valve, and outputs an off signal to the compressor and the first solenoid valve. At this time, the system operates in the spring and autumn mode; when the ambient temperature < 5°C, the controller outputs an on signal to the main fluorine pump or the standby fluorine pump, the air-cooled water pump, and the second solenoid valve, and outputs an off signal to the compressor, the first solenoid valve, the cooling water pump, and the fan. At this time, the system operates in the winter mode.

[0039] Preferably, the step S300 includes: when the compressor, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump, and the first solenoid valve receive the opening signal, and the second solenoid valve receives the closing signal, the compressor, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump operate, the first solenoid valve is turned on, and the second solenoid valve is turned off, and the system operates in the summer mode; when the second solenoid valve, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump receive the opening signal, and the compressor and the first solenoid valve receive the closing signal, the second solenoid valve, the cooling water pump, the fan, the air-cooled water pump, the main fluorine pump or the standby fluorine pump operate, the compressor and the first solenoid valve are turned off, and the system operates in the spring and autumn modes; when the air-cooled water pump, the second solenoid valve, the main fluorine pump or the standby fluorine pump receive the opening signal, and the compressor, the first solenoid valve, the cooling water pump, and the fan receive the closing signal, the air-cooled water pump, the second solenoid valve, the main fluorine pump or the standby fluorine pump operate, the compressor, the first solenoid valve, the cooling water pump, and the fan are turned off, and the system operates in the winter mode.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] The above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A fluorine pump and compressor refrigeration composite system, characterized in that: It includes a shell-and-tube condenser, a shell-and-tube evaporator, a compressor, a main fluorine pump, a standby fluorine pump, a throttling device, a first solenoid valve, a second solenoid valve, an air-cooled condenser module, an air-cooled cooling device, a cooling water pump, and a controller. The intake end of the shell-and-tube condenser is connected to the outlet end of the air-cooled condenser module through a pipeline. The intake end of the air-cooled condenser module is connected to one end of the second solenoid valve through a pipeline. The other end of the second solenoid valve is connected to the outlet end of the shell-and-tube evaporator through a pipeline. The liquid inlet end of the shell-and-tube evaporator is connected to the liquid outlet end of the throttling device through a pipeline. The liquid inlet end of the throttling device is connected to the liquid outlet ends of the main fluorine pump and the standby fluorine pump through a pipeline. The liquid inlet ends of the main fluorine pump and the standby fluorine pump are connected to the liquid outlet end of the shell-and-tube condenser through a pipeline. The water inlet end of the shell-and-tube condenser is connected to the water outlet end of the cooling water pump through a pipeline. The water inlet end of the cooling water pump is connected to the water outlet end of the air-cooled cooling device. The water inlet end of the air-cooled cooling device is connected to the water outlet end of the shell-and-tube condenser through a pipeline; The outlet end of the shell-and-tube evaporator is connected to the intake end of the compressor through a pipeline. One path of the outlet end of the compressor is connected to the intake end of the air-cooled condenser module through a pipeline. The other path of the outlet end of the compressor is connected to one end of the first solenoid valve through a pipeline. The other end of the first solenoid valve is connected to the intake end of the shell-and-tube condenser through a pipeline; The main fluorine pump, the standby fluorine pump, the first solenoid valve, the second solenoid valve, the compressor, the cooling water pump, and the air-cooled cooling device are electrically connected to the controller; The water inlet end of the shell-and-tube evaporator is connected to the external chilled water return pipeline through a pipeline. The water outlet end of the shell-and-tube evaporator is connected to the external chilled water supply pipeline through a pipeline.

2. The fluorine pump and compressor refrigeration composite system according to claim 1, characterized in that: The air-cooled cooling device includes a filler, a water distributor, a water storage tank, and a fan. The water distributor is located above the filler. The water storage tank is located below the filler. The fan is located at the top of the air-cooled cooling device. The water storage tank is connected to the water inlet end of the cooling water pump through a pipeline. The water distributor is connected to the water outlet end of the shell-and-tube condenser through a pipeline. The fan is electrically connected to the controller.

3. The fluorine pump and compressor refrigeration composite system according to claim 1, characterized in that: The air-cooled condenser module includes an air-cooled condenser, an air-cooled water distributor, an air-cooled water storage tank, and an air-cooled water pump. The air-cooled water distributor is located above the air-cooled condenser. The air-cooled water storage tank is located below the air-cooled condenser. The air-cooled water distributor is connected to the water outlet end of the air-cooled water pump through a pipeline. The water inlet end of the air-cooled water pump is connected to the air-cooled water storage tank through a pipeline. The air-cooled water pump is electrically connected to the controller.

4. A control method for a refrigeration composite system of a fluorine pump and a compressor, characterized in that: Includes Step S100: The controller makes a real-time judgment on the ambient temperature; Step S200: According to the judgment result, output multiple control signals of the corresponding mode to the compressor, solenoid valve, main refrigerant pump, standby refrigerant pump, cooling water pump, fan, and air-cooled water pump; Step S300: The compressor, solenoid valve, main refrigerant pump, standby refrigerant pump, cooling water pump, fan, and air-cooled water pump receive the control signals, and the compressor, solenoid valve, main refrigerant pump, standby refrigerant pump, cooling water pump, fan, and air-cooled water pump are turned on or off, so that the system operates in the corresponding mode.

5. The control method according to claim 4, wherein: Step S200 includes: when the ambient temperature > the first set temperature, the controller outputs an opening signal to the compressor, the main refrigerant pump or the standby refrigerant pump, the solenoid valve, the cooling water pump, the fan, and the air-cooled water pump; when the second set temperature <= the ambient temperature <= the first set temperature, the controller outputs an opening signal to the main refrigerant pump or the standby refrigerant pump, the cooling water pump, the fan, and the air-cooled water pump, and outputs a closing signal to the compressor and the solenoid valve; when the ambient temperature < the second set temperature, the controller outputs an opening signal to the main refrigerant pump or the standby refrigerant pump and the air-cooled water pump, and outputs a closing signal to the compressor, the solenoid valve, the cooling water pump, and the fan.

6. The control method according to claim 5, wherein: Step S300 includes: the compressor, the cooling water pump, the fan, the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump, and the solenoid valve receive the opening signal, the compressor, the cooling water pump, the fan, the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump operate, the solenoid valve is turned on, and the system operates in the summer mode; the solenoid valve, the cooling water pump, the fan, the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump receive the opening signal, the compressor and the solenoid valve receive the closing signal, the solenoid valve, the cooling water pump, the fan, the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump operate, the compressor and the solenoid valve are closed, and the system operates in the spring and autumn modes; the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump receive the opening signal, the compressor, the solenoid valve, the cooling water pump, and the fan receive the closing signal, the air-cooled water pump, the main refrigerant pump or the standby refrigerant pump operate, the compressor, the solenoid valve, the cooling water pump, and the fan are closed, and the system operates in the winter mode.

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