Air conditioning system, water supplementing method and device and readable storage medium

Abstract

The invention discloses an air conditioning system, a water supplementing method and device and a readable storage medium, relates to the field of air conditioners, and aims at achieving the purpose that a chilled water circulation system and a cooling water circulation system share the water supplementing system. The air conditioning system comprises a cooling water circulation loop, a chilled water circulation loop and a water supplementing flow path. The cooling water circulation loop comprises a first heat exchanger, a first inflow flow path, a first outflow flow path and a cooling tower; the first inflow flow path and the first outflow flow path communicate with the first heat exchanger. The chilled water circulation loop comprises a second heat exchanger, a second inflow flow path and a second outflow flow path; the second inflow flow path and the second outflow flow path are both communicated with the second heat exchanger; one of the first heat exchanger and the second heat exchanger is an evaporator, and the other is a condenser. The water replenishing flow path is arranged between the cooling tower and the second inflow flow path; the water supplementing flow path is configured to supplement water in the cooling tower to the second heat exchanger. According to the scheme, the cooling water circulation loop and the chilled water circulation loop share one set of water replenishing equipment.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to an air conditioning system, a water replenishment method, a device and a readable storage medium. Background Art

[0002] In the existing air conditioning system, the chilled water circulation system and the cooling tower system are two independent systems, which operate independently. The chilled water circulation system and the cooling tower system each have a water replenishment system and a constant pressure system.

[0003] The inventors have found that there are at least the following problems in the prior art: In the related art, the chilled water circulation system and the cooling tower system each use a separate water replenishment system, which not only increases the complexity and cost of the equipment, but also takes up more installation space. This problem is particularly prominent in buildings with limited space. Summary of the invention

[0004] The present invention provides an air conditioning system, a water replenishment method, a device and a readable storage medium, which are used to reduce the occupied space of the air conditioning system under the premise of being able to replenish water to a chilled water circulation system and a cooling water circulation system.

[0005] An embodiment of the present invention provides an air conditioning system, comprising:

[0006] A cooling water circulation loop comprises a first heat exchanger, a first inflow path, a first outflow path and a cooling tower; the first inflow path and the first outflow path are both connected to the first heat exchanger;

[0007] a chilled water circulation circuit, comprising a second heat exchanger, a second inflow path, and a second outflow path; the second inflow path and the second outflow path are both connected to the second heat exchanger; one of the first heat exchanger and the second heat exchanger is used as an evaporator, and the other is used as a condenser; and

[0008] The water replenishment flow path is arranged between the cooling tower and the second inflow flow path; the water replenishment flow path is configured to replenish the water in the cooling tower to the second heat exchanger.

[0009] In some embodiments, the cooling tower comprises:

[0010] tower body;

[0011] a water distribution pan located inside the tower body; one end of the first outflow flow path is connected to the water distribution pan, and the other end of the first outflow flow path is connected to the first heat exchanger; and

[0012] A water collecting pan is also located inside the tower body, and the water distribution pan is located above the water collecting pan; one end of the first inflow flow path is connected to the water collecting pan, and the other end of the first inflow flow path is connected to the first heat exchanger;

[0013] One end of the water replenishment flow path is communicated with the water distribution tray, and the other end of the water replenishment flow path is communicated with the second inflow flow path.

[0014] In some embodiments, the cooling tower is placed on the top of a building, and the water distribution pan is located higher than the second inflow path.

[0015] In some embodiments, the air conditioning system further includes a first control system, wherein the first control system includes:

[0016] a first pressure detection element installed in the second inflow flow path, and the first pressure detection element is configured to detect the fluid pressure in the second inflow flow path;

[0017] A first switch valve is arranged in the water replenishment flow path; and

[0018] The first control device is signal-connected to the first switch valve and the first pressure detection element. The first control device is constructed to control the conduction and disconnection of the first switch valve according to the fluid pressure in the second inflow path detected by the first pressure detection element.

[0019] In some embodiments, the cooling water circulation system further includes a cooling water pump, and the cooling water pump is disposed in the first inflow path;

[0020] The first control system further comprises:

[0021] A first liquid level detection element is installed in the water distribution tray, and is configured to detect the liquid level in the water distribution tray; the first liquid level detection element is connected to the first control device by signal;

[0022] The first control device is configured to control the operating frequency of the cooling water pump according to the liquid level information of the water distribution tray detected by the first liquid level detection element.

[0023] In some embodiments, the first control system further comprises:

[0024] A second liquid level detection element is installed in the water collecting tray, and the second liquid level detection element is configured to detect the liquid level in the water collecting tray; the second liquid level detection element is connected to the first control device by signal;

[0025] The air conditioning system further comprises:

[0026] a second switch valve, signal-connected to the first control device; and

[0027] The first replenishment flow path is connected to the water collecting pan to replenish water to the water collecting pan; the second switch valve is installed on the first replenishment flow path to control the conduction and disconnection of the first replenishment flow path;

[0028] Wherein, the first control device is also configured to control the on / off state of the second switch valve according to the liquid level in the water collecting tray detected by the second liquid level detection element.

[0029] In some embodiments, the air conditioning system further comprises:

[0030] The first water replenishment pump is disposed in the water replenishment flow path, and the first water replenishment pump is configured to replenish the water in the water distribution tray to the water replenishment flow path.

[0031] In some embodiments, the air conditioning system further comprises:

[0032] a cooling water pump, disposed in the first inflow channel; and

[0033] a chilled water pump, arranged in the second inflow path;

[0034] One end of the water supply flow path is connected to the outlet of the cooling water pump, and the other end of the water supply flow path is connected to the inlet of the freezing water pump.

[0035] In some embodiments, the cooling tower comprises:

[0036] tower body;

[0037] a water distribution pan located inside the tower body; one end of the first outflow flow path is connected to the water distribution pan, and the other end of the first outflow flow path is connected to the first heat exchanger; and

[0038] A water collecting pan is also located inside the tower body, and the water distribution pan is located above the water collecting pan; one end of the first inflow flow path is connected to the water collecting pan, and the other end of the first inflow flow path is connected to the first heat exchanger;

[0039] In some embodiments, the air conditioning system further includes a second control system, wherein the second control system includes:

[0040] a second pressure detection element installed in the second inflow flow path, and the second pressure detection element is configured to detect the fluid pressure in the second inflow flow path;

[0041] A third switch valve is arranged in the water replenishment flow path; and

[0042] The second control device is signal-connected to the third switch valve and the second pressure detection element. The second control device is constructed to control the conduction and disconnection of the third switch valve according to the fluid pressure in the second inflow path detected by the second pressure detection element.

[0043] In some embodiments, the second control system further comprises:

[0044] A first flow detection element is installed in the first inflow path, and the first flow detection element is located downstream of the cooling water pump; the first flow detection element is signal-connected to the second control device, and the second control device is constructed to control the operating frequency of the cooling water pump according to the flow detected by the first flow detection element.

[0045] In some embodiments, the second control system further comprises:

[0046] A second flow detection element is installed in the water replenishment flow path, and the second flow detection element is located upstream of the chilled water pump; the second flow detection element is signal-connected to the second control device, and the second control device is constructed to control the operating frequency of the cooling water pump according to the flow detected by the first flow detection element and the flow detected by the second flow detection element to maintain the water level in the water distribution tray.

[0047] In some embodiments, the air conditioning system further comprises:

[0048] A third liquid level detection element is installed in the water collecting tray, and the third liquid level detection element is configured to detect the liquid level in the water collecting tray; the third liquid level detection element is connected to the second control device by signal;

[0049] The air conditioning system further comprises:

[0050] a fourth switch valve, signal-connected to the second control device; and

[0051] The second replenishment flow path is connected to the water collecting pan to replenish water to the water collecting pan; the fourth switch valve is installed on the second replenishment flow path to control the conduction and disconnection of the second replenishment flow path;

[0052] Wherein, the second control device is also configured to control the on / off state of the fourth switch valve according to the liquid level in the water collecting tray detected by the third liquid level detection element.

[0053] The embodiment of the present invention further provides a water replenishment method for an air conditioning system, which is implemented by using the air conditioning system provided by any technical solution of the present invention. The water replenishment method for the air conditioning system comprises the following steps:

[0054] determining whether it is necessary to replenish water to the second inflow path;

[0055] If water needs to be replenished to the second inflow path, the water replenishment path is opened.

[0056] In some embodiments, the air conditioning system water replenishment method further includes the following steps:

[0057] Determining whether it is necessary to add water to the water distribution pan of the cooling tower;

[0058] If water needs to be added to the water distribution pan, the operating frequency of the cooling water pump of the cooling water circulation loop is increased.

[0059] In some embodiments, the air conditioning system water replenishment method further includes the following steps:

[0060] Determining whether it is necessary to add water to the water collecting pan of the cooling tower;

[0061] If the water collecting tray needs to be supplemented with water, the water collecting tray is supplemented with water through an external water source.

[0062] The embodiment of the present invention further provides a water replenishing device for an air conditioning system, comprising:

[0063] Memory; and

[0064] A processor coupled to the memory, the processor being configured to execute the air conditioning system water replenishment method provided by any technical solution of the present invention based on instructions stored in the memory.

[0065] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a water replenishment method for an air conditioning system as provided by any technical solution of the present invention.

[0066] The air conditioning system provided by the above technical solution includes a cooling water circulation loop, a chilled water circulation loop and a water replenishment flow path. The water replenishment flow path is arranged between the cooling tower and the second inflow flow path, and the water in the cooling tower can be introduced into the second inflow flow path via the water replenishment flow path. When the chilled water circulation loop is short of water, there is no need to set up a water replenishment system for the chilled water circulation loop separately, but directly use the water in the cooling tower of the cooling water circulation loop to replenish water. The above technical solution realizes that the cooling water circulation loop and the chilled water circulation loop share a set of water replenishment equipment, thereby significantly reducing equipment costs and installation space requirements, reducing maintenance costs and operational complexity. The above technical solution also reduces maintenance costs. Since the cooling water circulation loop and the chilled water circulation loop share a set of water replenishment equipment, the number of water replenishment equipment is reduced, and the maintenance workload is also reduced accordingly, reducing the maintenance and maintenance work of multiple water replenishment systems, reducing manpower and material costs, and improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0068] Figure 1 A schematic diagram of the structure of an air conditioning system provided in some embodiments of the present invention.

[0069] Figure 2 A schematic diagram of air conditioning system control logic provided for some embodiments of the present invention.

[0070] Figure 3 Schematic diagram of the air conditioning system structure provided for some other embodiments of the present invention.

[0071] Figure 4 A schematic diagram of air conditioning system control logic provided for some other embodiments of the present invention.

[0072] Figure 5 A schematic diagram of a water replenishment method for an air conditioning system provided in some embodiments of the present invention.

[0073] Figure 6 A schematic diagram of replenishing water to a water distribution pan according to a water replenishment method for an air conditioning system provided in some embodiments of the present invention.

[0074] Figure 7 A schematic diagram of replenishing water to a water collecting pan according to a water replenishment method for an air conditioning system provided in some embodiments of the present invention.

[0075] Reference numerals:

[0076] 1. Cooling water circulation loop; 2. Chilled water circulation loop; 3. Make-up water flow path; 4. First control system; 5. Second switch valve; 6. First make-up flow path; 7. Second control system; 8. Fourth switch valve; 9. Second make-up flow path;

[0077] 11. first heat exchanger; 12. first inflow path; 13. first outflow path; 14. cooling tower; 15. cooling water pump;

[0078] 141. tower body; 142. water distribution tray; 143. water collection tray;

[0079] 21. Second heat exchanger; 22. Second inflow path; 23. Second outflow path; 24. Chilled water pump;

[0080] 41. first pressure detection element; 42. first switch valve; 43. first control device; 44. first liquid level detection element; 45. second liquid level detection element; 46. fifth switch valve; 47. check element;

[0081] 71. Second pressure detection element; 72. Third switch valve; 73. Second control device; 74. First flow detection element; 75. Second flow detection element; 76. Third liquid level detection element; 77. Sixth switch valve; 78. Check valve; 79. Pressure regulating valve; 70. Third pressure detection element. DETAILED DESCRIPTION

[0082] Combine the following Figure 1 to Figure 7 The technical solution provided by the present invention is described in more detail. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary and not limiting.

[0083] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0084] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0085] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0086] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment are considered part of the specification.

[0087] The dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In the drawings, the same reference numerals are attached to common structural elements or structural elements of the same type, and their repeated descriptions are appropriately omitted.

[0088] See also Figure 1 and Figure 2 The embodiment of the present invention provides an air conditioning system, which includes a cooling water circulation loop 1, a chilled water circulation loop 2 and a water supply flow path 3. The cooling water circulation loop 1 includes a first heat exchanger 11, a first inflow flow path 12, a first outflow flow path 13 and a cooling tower 14; the first inflow flow path 12 and the first outflow flow path 13 are both connected to the first heat exchanger 11. The chilled water circulation loop 2 includes a second heat exchanger 21, a second inflow flow path 22 and a second outflow flow path 23; the second inflow flow path 22 and the second outflow flow path 23 are both connected to the second heat exchanger 21; one of the first heat exchanger 11 and the second heat exchanger 21 is used as an evaporator, and the other is used as a condenser. The water supply flow path 3 is arranged between the cooling tower 14 and the second inflow flow path 22. The water supply flow path 3 includes a conducting state and a disconnecting state; when the water supply flow path 3 is in the conducting state, the water supply flow path 3 is configured to supply water in the cooling tower 14 to the second heat exchanger 21.

[0089] The first heat exchanger 11 and the second heat exchanger 21 are in the same set of refrigerant circulation loops. The refrigerant flows between the first heat exchanger 11 and the second heat exchanger 21, and as the form of the refrigerant changes, heat release and heat absorption are realized. Specifically, in the refrigerant circulation loop, the refrigerant is first compressed from a gaseous state by a compressor into a high-temperature and high-pressure gaseous state. The high-temperature and high-pressure gaseous refrigerant enters the condenser (the condenser is one of the first heat exchanger 11 or the second heat exchanger 21, assuming that the first heat exchanger 11 is a condenser and the second heat exchanger 21 is an evaporator). In the condenser, the refrigerant releases heat by heat exchange with an external cooling medium (specifically, the water in the cooling water circulation loop 1 in the embodiment of this article), so that the refrigerant undergoes a phase change from a gaseous state to a liquid state and becomes a high-pressure liquid refrigerant. After the high-pressure liquid refrigerant expands, it forms a gas-liquid two-phase state. Then the gas-liquid two-phase refrigerant enters the second heat exchanger 21 (evaporator). The refrigerant absorbs heat from the outside (the water in the chilled water circulation loop 2) in the second heat exchanger 21, and the liquid refrigerant evaporates continuously to become gaseous. During this process, the temperature and pressure of the refrigerant remain basically unchanged (at the evaporation pressure and temperature) until it is completely converted into gaseous refrigerant, and then it is sucked into the compressor to start the next round of circulation.

[0090] The cooling water circulation loop 1 and the chilled water circulation loop 2 are two independent water circulation loops. If the water supply flow path 3 is not connected, the water in the cooling water circulation loop 1 will not enter the chilled water circulation loop 2. If the water supply flow path 3 is connected, the water in the cooling water circulation loop 1 will enter the chilled water circulation loop 2 to realize the water supply to the chilled water circulation loop 2.

[0091] In some embodiments, the cooling tower 14 includes a tower body 141, a water distribution pan 142, and a water collection pan 143. The water distribution pan 142 is located inside the tower body 141; one end of the first outflow path 13 is connected to the water distribution pan 142, and the other end of the first outflow path 13 is connected to the first heat exchanger 11. The water collection pan 143 is also located inside the tower body 141, and the water distribution pan 142 is located above the water collection pan 143. One end of the first inflow path 12 is connected to the water collection pan 143, and the other end of the first inflow path 12 is connected to the first heat exchanger 11. Among them, one end of the water supply path 3 is connected to the water distribution pan 142, and the other end of the water supply path 3 is connected to the second inflow path 22.

[0092] In the above technical solution, the water replenishment flow path 3 may be provided with a power component or may not be provided with a power component. If a power component is provided, the position of the water distribution tray 142 may be lower than the second inflow flow path 22 or may be higher than the second inflow flow path 22. If no power component is provided, the position of the water distribution tray 142 is higher than the second inflow flow path 22, so that gravity can be used to make the water in the water distribution tray 142 flow to the second inflow flow path 22.

[0093] In some embodiments, the air conditioning system further includes a first water replenishment pump (not shown), which is disposed in the water replenishment flow path 3 and is configured to pump water in the water distribution pan 142 into the water replenishment flow path 3. The above technical solution provides a first water replenishment pump, so that the position of the water distribution pan 142 can be arranged more flexibly.

[0094] In some embodiments, the cooling tower 14 is placed on the top of the building, and the position of the water distribution pan 142 is higher than the position of the second inflow path 22. The position of the cooling tower 14 is high, and the water distribution pan 142 is located in the middle and upper part of the cooling tower 14. The position of the water distribution pan 142 is also relatively high. The second inflow path 22 is generally close to the ground or the indoor floor of the building. The position of the water distribution pan 142 is higher than the position of the second inflow path 22. The water flowing out of the water distribution pan 142 can naturally and evenly flow to the second inflow path 22 by gravity. And there is no need to set up power components, so that the number of components of the air-conditioning system is small, and the energy consumption brought by the power components is reduced, and the dependence on the power components is reduced, and there will be no phenomenon of being unable to replenish water due to damage or failure of the power components. In addition, the position of the cooling tower 14 is high, and the possibility of water being polluted at a high place is relatively small. Dust and debris on the ground are not easy to enter the water of the cooling tower 14 located at the top of the building, which is conducive to maintaining the water quality of the cooling water circulation system, and making the water replenishing the sub-chilled water circulation system cleaner.

[0095] Continue to see Figure 1 In some embodiments, the air conditioning system further includes a first control system 4, which includes a first pressure detection element 41, a first switch valve 42, and a first control device 43. The first pressure detection element 41 is installed in the second inflow path 22, and the first pressure detection element 41 is configured to detect the fluid pressure in the second inflow path 22. The first switch valve 42 is arranged in the water replenishment path 3. The first control device 43 is signal-connected to the first switch valve 42 and the first pressure detection element 41, and the first control device 43 is configured to control the conduction and disconnection of the first switch valve 42 according to the fluid pressure in the second inflow path 22 detected by the first pressure detection element 41.

[0096] The first pressure detection element 41 is used to detect the fluid pressure in the second inflow path 22, and the first pressure detection element 41 is located upstream of the chilled water pump 24 described later. The first pressure detection element 41 can be a spring tube pressure gauge, a bellows pressure gauge, a piezoelectric pressure detection element, a capacitive pressure detection element, etc. The first pressure detection element 41 can determine whether the fluid in the second inflow path 22 is sufficient based on the fluid pressure detected in the second inflow path 22. The first pressure detection element 41 can make the fluid pressure in the second inflow path 22 replenished to a constant numerical range, that is, constant pressure water replenishment is achieved, thereby ensuring the stability and efficiency of the system. The various embodiments described later can also achieve constant pressure water replenishment.

[0097] The first switch valve 42 can specifically adopt an electric switch valve, which can realize precise control of the on and off of the water replenishment flow path 3. Compared with manual valves, electric switch valves can be opened and closed accurately according to preset programs or signals. In addition, the electric switch valve has a high degree of automation and can be remotely controlled. The operator can control the state of the electric switch valve without arriving at the site, which greatly improves work efficiency and safety; and only a small number of monitoring personnel are needed in the control center to manage many valves, thereby saving a lot of manpower costs. The first switch valve 42 cooperates with the first control device 43 to realize automatic control and improve the intelligence of control, thereby improving the operating efficiency and reliability of the entire system. The electric switch valve has good safety performance. In the event of emergency situations such as power outages, signal interruptions or equipment failures, the electric switch valve can automatically switch to a preset safe state.

[0098] If it is detected that the fluid in the second inflow path 22 is insufficient, the first control device 43 opens the first switch valve 42. After the first switch valve 42 is turned on, the water supply path 3 is also turned on. The water in the water distribution tray 142 of the cooling tower 14 can flow to the second inflow path 22. In this way, water is replenished from the cooling water circulation system to the chilled water circulation system. When the fluid pressure in the second inflow path 22 detected by the first pressure detection element 41 meets the set value, the first control device 43 disconnects the first switch valve 42, and the water supply path 3 is also disconnected. At this time, it is no longer necessary to replenish water to the chilled water circulation system.

[0099] Continue to see Figure 1 and Figure 2 In some embodiments, the cooling water circulation system further includes a cooling water pump 15, which is disposed in the first inflow path 12. The first control system 4 further includes a first liquid level detection element 44, which is installed in the water distribution tray 142, and is configured to detect the liquid level in the water distribution tray 142; the first liquid level detection element 44 is connected to the first control device 43 by signal. The first control device 43 is configured to control the operating frequency of the cooling water pump 15 according to the liquid level information of the water distribution tray 142 detected by the first liquid level detection element 44.

[0100] The first liquid level detection element 44 can be a contact liquid level detection element or a non-contact liquid level detection element. Examples of contact liquid level detection elements include float type liquid level sensors, buoy type liquid level sensors, capacitive liquid level sensors, conductivity liquid level sensors, magnetostrictive liquid level sensors, thermal resistor liquid level sensors, etc. Examples of non-contact liquid level detection elements include ultrasonic liquid level sensors, radar liquid level sensors, photoelectric liquid level sensors, microwave liquid level sensors, etc. The first liquid level detection element 44 can stably and reliably detect the liquid level in the water distribution tray 142, with fast detection speed and high detection accuracy. The detection results can be transmitted to the first control device 43 in real time to achieve accurate control of the operating state of the cooling water pump 15.

[0101] Since the water in the water distribution pan 142 needs to be used to supplement the water in the chilled water circulation loop 2 when the water volume is insufficient, it is possible that the water in the water distribution pan 142 of the cooling water circulation loop 1 is reduced too much, thereby failing to meet the water distribution requirements. Therefore, the first control system 4 also includes a first liquid level detection element 44, which detects the liquid level information of the water distribution pan 142 in real time. When the liquid level in the water distribution pan 142 is reduced to the lower limit of the water level threshold of the water distribution pan 142, it is necessary to increase the operating frequency of the cooling water pump 15 so that the water in the water collection pan 143 is quickly transported to the water distribution pan 142, thereby increasing the water level of the water distribution pan 142 to meet the water distribution requirements of the water distribution pan 142. The lower limit of the water level threshold of the water distribution pan 142 is a set value, which is set in advance according to the working conditions.

[0102] In some embodiments, the first control system 4 further includes a second liquid level detection element 45, which is installed in the water collecting tray 143 and is configured to detect the liquid level in the water collecting tray 143; the second liquid level detection element 45 is connected to the first control device 43 by signal. The air conditioning system further includes a second switch valve 5 and a first supply flow path 6. The second switch valve 5 is connected to the first control device 43 by signal. The water source of the first supply flow path 6 comes from outside the air conditioning system, such as from a municipal water pipe. The first supply flow path 6 is connected to the water collecting tray 143 to replenish water to the water collecting tray 143; the second switch valve 5 is installed in the first supply flow path 6 to control the conduction and disconnection of the first supply flow path 6. Among them, the first control device 43 is also configured to control the conduction and disconnection of the second switch valve 5 according to the liquid level in the water collecting tray 143 detected by the second liquid level detection element 45.

[0103] The second liquid level detection element 45 can be a contact liquid level detection element or a non-contact liquid level detection element. Examples of contact liquid level detection elements are float type liquid level sensors, buoy type liquid level sensors, capacitive liquid level sensors, conductivity liquid level sensors, magnetostrictive liquid level sensors, thermal resistor liquid level sensors, etc. Examples of non-contact liquid level detection elements are ultrasonic liquid level sensors, radar liquid level sensors, photoelectric liquid level sensors, microwave liquid level sensors, etc. The use of the second liquid level detection element 45 can stably and reliably detect the liquid level in the water collecting tray 143, with fast detection speed and high detection accuracy. The detection result can be transmitted to the first control device 43 in real time. Through the first control device 43, the conduction and disconnection of the second switch valve 5 are timely controlled to conduct or disconnect the first supply flow path 6, thereby realizing the water replenishment operation of the water collecting tray 143.

[0104] Specifically, when the second liquid level detection element 45 detects that the liquid level in the water collecting pan 143 is lower than the lower limit of the water level threshold of the water collecting pan 143, the second switch valve 5 is turned on, and water is replenished to the water collecting pan 143 through the first replenishment flow path 6. When the second liquid level detection element 45 detects that the liquid level in the water collecting pan 143 is higher than or equal to the upper limit of the water level threshold of the water collecting pan 143, the second switch valve 5 is turned off, and water is no longer replenished to the water collecting pan 143 through the first replenishment flow path 6. The lower limit of the water level threshold of the water collecting pan 143 and the upper limit of the water level threshold of the water collecting pan 143 are both set values, which are set in advance according to the working conditions.

[0105] The following introduces the water replenishment process of the air conditioning system.

[0106] Under some working conditions, when the chilled water circulation loop 2 of the air-conditioning system needs to be replenished with water, the replenishment amount is small and will not affect the normal operation of the water distribution tray 142 and the water collection tray 143, so only water needs to be replenished to the chilled water circulation loop 2.

[0107] Under other working conditions, when the chilled water circulation loop 2 of the air conditioning system needs to be replenished, the replenished water amount is small. Although it will not affect the normal operation of the water distribution pan 142 and the water collection pan 143, since the replenished water source is the water distribution pan 142, it may cause the water volume in the water distribution pan 142 to be small in a short period of time. Therefore, it is necessary to replenish water to the chilled water circulation loop 2, and it is also necessary to increase the working frequency of the cooling water pump 15 to increase the water volume in the water distribution pan 142. Under this working condition, it is not necessary to replenish water to the water collection pan 143. Figure 2 , Figure 2 The dashed box on the left side of illustrates the control logic for replenishing water to the chilled water circulation loop 2 and the water distribution pan 142. Figure 2 The middle dotted box shows the control logic of replenishing water to the water distribution tray 142.

[0108] Under some other working conditions, when the chilled water circulation loop 2 of the air-conditioning system needs to be replenished with water, the amount of water replenished is large, which affects the normal operation of the water distribution pan 142 and the water collection pan 143. Therefore, it is necessary to replenish water to the chilled water circulation loop 2, and it is also necessary to increase the working frequency of the cooling water pump 15 to increase the amount of water in the water distribution pan 142; it is also necessary to replenish the water collection pan 143 with the help of an external water source. Figure 2 The dashed box on the left side of shows the control logic of replenishing water to the water distribution tray 142.

[0109] In some embodiments, the first control system 4 further includes a fifth switch valve 46 , which is used to control the on / off of the first inflow path 12 , thereby controlling whether water can flow into the first heat exchanger 11 .

[0110] In some embodiments, the first control system 4 further includes two check elements 47, one of which is arranged on the first inflow path 12, and the other check element 47 is arranged on the water supply path 3, and the check element 47 is used to prevent the water in the first inflow path 12 and the water supply path 3 from flowing back. The check element 47 is specifically a check valve. Specifically, considering that the pressure at the water inlet of the chilled water pump 24 and the water outlet of the cooling water pump 15 are not balanced, for example, the pressure at the inlet of the chilled water pump is too high, which may cause the cooling water to flow back, or the start and stop of the cooling water pump 15 may cause the water supply to flow back, so the check elements 47 are arranged on the first inflow path 12 and the water supply path 3 respectively to prevent backflow.

[0111] The above technical scheme realizes unified management and control of the water replenishment of the chilled water circulation loop and the cooling water circulation loop 1 through the first control system 4, improves the degree of automation and intelligence of the system, adopts various sensors and the first control device 43 to monitor the system's pressure, water level, flow and other parameters in real time, automatically adjusts the water replenishment amount according to actual needs, and realizes precise control of the water replenishment operation.

[0112] See also Figure 3 and Figure 4 , some other embodiments are described below.

[0113] This embodiment is different from the above-described embodiments in at least the following aspects: the water replenishment flow path 3 is disposed at a different position.

[0114] In some embodiments, the air conditioning system further includes a cooling water pump 15 and a freezing water pump 24, wherein the cooling water pump 15 is disposed in the first inflow path 12, and the freezing water pump 24 is disposed in the second inflow path 22. One end of the water supply path 3 is connected to the outlet of the cooling water pump 15, and the other end of the water supply path 3 is connected to the inlet of the freezing water pump 24.

[0115] In various embodiments of the present invention, VFD (Variable Frequency Drive) can be set for both the cooling water pump 15 and the freezing water pump 24. The VFD can flexibly adjust the speed of the water pump according to the indoor and outdoor temperature and the cooling demand, so as to avoid the water pump running at a high speed all the time, thereby reducing energy consumption and extending the service life of the equipment.

[0116] When the amount of water in the second inflow path 22 is insufficient, the water replenishment path 3 replenishes the water in the water collecting tray 143 to the second inflow path 22 with the help of the cooling water pump 15. In this way, there is no need to set up a separate water replenishment system for the chilled water circulation loop 2, and the cooling water circulation loop 1 and the chilled water circulation loop 2 share a set of water replenishment equipment, thereby significantly reducing equipment costs and installation space requirements, and reducing maintenance costs and operational complexity.

[0117] Continue to see Figure 3 and Figure 4 In some embodiments, the cooling tower 14 includes a tower body 141, a water distribution tray 142, and a water collection tray 143. The water distribution tray 142 is located inside the tower body 141; one end of the first outflow path 13 is connected to the water distribution tray 142, and the other end of the first outflow path 13 is connected to the first heat exchanger 11. The water collection tray 143 is also located inside the tower body 141, and the water distribution tray 142 is located above the water collection tray 143; one end of the first inflow path 12 is connected to the water collection tray 143, and the other end of the first inflow path 12 is connected to the first heat exchanger 11.

[0118] The first inflow path 12 forms two parallel branches with the water replenishment path 3 at the downstream of the cooling water pump 15. The first inflow path 12 and the water replenishment path 3 share a cooling water pump 15. The air-conditioning system requires fewer components and has a high degree of system integration. In addition, water is replenished under the action of the cooling water pump 15, the water replenishment amount is higher, and the water replenishment speed is easier to control.

[0119] Continue to see Figure 3 and Figure 4 In some embodiments, the air conditioning system further includes a second control system 7, which includes a second pressure detection element 71, a third switch valve 72, and a second control device 73. The second pressure detection element 71 is installed in the second inflow path 22, and the second pressure detection element 71 is configured to detect the fluid pressure in the second inflow path 22. The third switch valve 72 is arranged in the water replenishment path 3. The second control device 73 is signal-connected to the third switch valve 72 and the second pressure detection element 71, and the second control device 73 is configured to control the conduction and disconnection of the third switch valve 72 according to the fluid pressure in the second inflow path 22 detected by the second pressure detection element 71.

[0120] The second pressure detection element 71 is used to detect the fluid pressure in the second inflow path 22, and the second pressure detection element 71 is located upstream of the chilled water pump 24. The second pressure detection element 71 can be a spring tube pressure gauge, a bellows pressure gauge, a piezoelectric pressure detection element, a capacitive pressure detection element, etc. The second pressure detection element 71 can determine whether the fluid in the second inflow path 22 is sufficient based on the detected fluid pressure in the second inflow path 22. If the second pressure detection element 71 detects that the fluid pressure in the second inflow path 22 is insufficient, the second pressure detection element 71 is adjusted until the fluid pressure in the second inflow path 22 reaches the set value. The set value is a preset value, and is also the pressure value for the normal operation of the second inflow path 22. In this way, constant pressure water replenishment to the second inflow path 22 is achieved.

[0121] The third switch valve 72 can be an electric switch valve, which can realize precise control of the on and off of the water replenishment flow path 3. Compared with manual valves, electric switch valves can be opened and closed accurately according to preset programs or signals. In addition, the electric switch valve has a high degree of automation and can be remotely controlled. The operator can control the state of the electric switch valve without arriving at the site, which greatly improves work efficiency and safety; and only a small number of monitoring personnel are needed in the control center to manage many valves, thereby saving a lot of manpower costs. The third switch valve 72 cooperates with the second control device 73 to realize automatic control and improve the intelligence of control, thereby improving the operating efficiency and reliability of the entire system. The electric switch valve has good safety performance. In the event of emergency situations such as power outages, signal interruptions or equipment failures, the electric switch valve can automatically switch to a preset safe state.

[0122] If it is detected that the fluid in the second inflow path 22 is insufficient, the second control device 73 opens the third switch valve 72. After the third switch valve 72 is turned on, the water supply path 3 is also turned on. The water in the water collecting tray 143 of the cooling tower 14 can flow to the second inflow path 22. In this way, water supply from the cooling water circulation system to the chilled water circulation system is realized. When the fluid pressure in the second inflow path 22 detected by the second pressure detection element 71 meets the set value, the second control device 73 disconnects the third switch valve 72, and the water supply path 3 is also disconnected. At this time, it is no longer necessary to replenish water to the chilled water circulation system.

[0123] In some embodiments, the second control system 7 further includes a third pressure detection element 73, which is located at the inlet of the chilled water pump 24 and is used to detect whether the water flow pressure entering the chilled water pump 24 is normal or whether there is leakage.

[0124] In some embodiments, the second control system 7 further includes a first flow detection element 74, which is installed in the first inflow flow path 12 and is located downstream of the cooling water pump 15. The first flow detection element 74 is signal-connected to the second control device 73, and the second control device 73 is configured to control the operating frequency of the cooling water pump 15 according to the flow detected by the first flow detection element 74.

[0125] The first flow detection element 74 is, for example, a differential pressure flow detection element, a volumetric flow detection element, a velocity flow detection element, a mass flow detection element, etc. The first flow detection element 74 can detect the flow rate downstream of the cooling water pump 15 in real time, and the flow rate represents the amount of water entering the first heat exchanger 11. The water coming out of the water collecting tray 143 is divided into two branches: the first branch flows to the first heat exchanger 11, and the second branch flows to the water supply path 3. If too much water is diverted to the water supply path 3 after the water supply path 3 is turned on, the amount of water distributed to the first heat exchanger 11 will be less, which may cause too little water in the subsequent water distribution tray 142. Therefore, it is necessary to increase the operating frequency of the cooling water pump 15 to ensure that the amount of water in the water distribution tray 142 is sufficient for water distribution. It can be seen that the second control system 7 can realize precise regulation of the make-up water volume and make-up water pressure, and realize balanced make-up water flow distribution on the freezing side (chilled water circulation loop 2) and the cooling side (cooling water circulation loop 1) under different operating modes and stable pressure of the chilled water circulation system.

[0126] In other embodiments, in order to facilitate the control of the on-off of the first inflow flow path 12, the second control system 7 further includes a sixth switch valve 77, which is arranged downstream of the cooling water pump 15 to control whether water can flow into the first heat exchanger 11. By controlling the opening of the sixth switch valve 77 and the third switch valve 72 and the operating frequency of the cooling water pump 15, the flow distribution entering the sixth switch valve 77 and the third switch valve 72 can be controlled, so that the flow entering both reaches the preset value, meets the flow requirements of the cooling water circulation loop and the chilled water circulation loop, and then realizes accurate control of the water replenishment amount of the cooling water circulation loop to the chilled water circulation loop.

[0127] In other embodiments, each of the two branches is provided with a check valve 78. Considering the imbalance of pressure at the water inlet of the chilled water pump 24 and the water outlet of the cooling water pump 15, for example, excessive pressure at the inlet of the chilled water pump may cause cooling water to flow back, or the start and stop of the cooling water pump 15 may cause the make-up water to flow back, so check valves 78 are arranged on the cooling water and make-up water pipes to prevent backflow.

[0128] In other embodiments, the second control system 7 also includes a pressure regulating valve 79, which is arranged in the water replenishment flow path 3. The pressure of the water replenishment flow path 3 can be adjusted by the pressure regulating valve 79 to achieve constant-pressure water replenishment for the second inflow flow path 22. The pressure regulating valve 79 can also absorb and adjust pressure fluctuations to avoid pressure shocks to the chilled water circulation system.

[0129] In some embodiments, the second control system 7 also includes a second flow detection element 75, which is installed in the water make-up flow path 3 and is located upstream of the chilled water pump 24; the second flow detection element 75 is signal-connected to the second control device 73, and the second control device 73 is constructed to control the operating frequency of the cooling water pump 15 according to the flow detected by the first flow detection element 74 and the flow detected by the second flow detection element 75 to maintain the water level in the water distribution tray 142.

[0130] The second flow detection element 75 is a differential pressure flow detection element, a volumetric flow detection element, a velocity flow detection element, a mass flow detection element, etc. The second flow detection element 75 can detect the flow entering the water replenishment flow path 3 in real time, and the flow rate represents the amount of water replenished for the second inflow flow path 22. If the amount of water diverted to the water replenishment flow path 3 is too much, then the amount of water allocated to the first heat exchanger 11 will be less, which may cause too little water in the subsequent water distribution tray 142. Therefore, the second control device 73 can achieve more accurate control of the operating frequency of the cooling water pump 15 based on the flow detected by the first flow detection element 74 and the flow detected by the second flow detection element 75 to ensure that the amount of water in the water distribution tray 142 is sufficient for water distribution.

[0131] Continue to see Figure 3 and Figure 4 In some embodiments, the air conditioning system further includes a third liquid level detection element 76, which is installed in the water collecting tray 143 and is configured to detect the liquid level in the water collecting tray 143; the third liquid level detection element 76 is connected to the second control device 73 by signal. The air conditioning system further includes a fourth switch valve 8 and a second supply flow path 9. The fourth switch valve 8 is connected to the second control device 73 by signal. The second supply flow path 9 can be connected to an external water source, such as a municipal pipeline, to replenish the second supply flow path 9. The second supply flow path 9 is connected to the water collecting tray 143 to replenish the water collecting tray 143; the fourth switch valve 8 is installed in the second supply flow path 9 to control the conduction and disconnection of the second supply flow path 9. The second control device 73 is also configured to control the conduction and disconnection of the fourth switch valve 8 according to the liquid level in the water collecting tray 143 detected by the third liquid level detection element 76.

[0132] The third liquid level detection element 76 can be a contact liquid level detection element or a non-contact liquid level detection element. Examples of contact liquid level detection elements include float type liquid level sensors, buoy type liquid level sensors, capacitive liquid level sensors, conductivity liquid level sensors, magnetostrictive liquid level sensors, thermal resistor liquid level sensors, etc. Examples of non-contact liquid level detection elements include ultrasonic liquid level sensors, radar liquid level sensors, photoelectric liquid level sensors, microwave liquid level sensors, etc. The use of the second liquid level detection element 45 can stably and reliably detect the liquid level in the water collecting tray 143, with fast detection speed and high detection accuracy. The detection result can be transmitted to the first control device 43 in real time, and the second control device 73 can timely control the conduction and disconnection of the fourth switch valve 8 to conduct or disconnect the second supply flow path 9, thereby realizing the water replenishment operation of the water collecting tray 143.

[0133] The following introduces the water replenishment control method of the air conditioning system.

[0134] Under some working conditions, when the chilled water circulation loop 2 of the air-conditioning system needs to be replenished with water, the replenishment amount is small and will not affect the normal operation of the water distribution tray 142 and the water collection tray 143, so only water needs to be replenished to the chilled water circulation loop 2.

[0135] Under other working conditions, when the chilled water circulation loop 2 of the air-conditioning system needs to be replenished with water, the replenishment amount is small. Although it will not affect the normal operation of the water distribution pan 142 and the water collection pan 143, since the replenishment source is the water distribution pan 142, it may cause the water volume in the water distribution pan 142 to be low in a short period of time. Therefore, it is necessary to replenish water to the chilled water circulation loop 2, and it is also necessary to increase the working frequency of the cooling water pump 15 to increase the water volume in the water distribution pan 142. At this time, water can be directly replenished to the water distribution pan 142, and there is no need to set a liquid level detection element for detecting the liquid level of the water distribution pan 142. Under this working condition, it is not necessary to replenish water to the water collection pan 143. See Figure 4 , Figure 4 The dashed box on the left side of shows the control logic of constant pressure water replenishment to the chilled water circulation loop 2 and water replenishment to the water distribution pan 142.

[0136] Under some other working conditions, when the chilled water circulation loop 2 of the air-conditioning system needs to be replenished with water, the amount of water replenished is large, which affects the normal operation of the water distribution pan 142 and the water collection pan 143. Therefore, it is necessary to replenish water to the chilled water circulation loop 2, and it is also necessary to increase the working frequency of the cooling water pump 15 to increase the amount of water in the water distribution pan 142; it is also necessary to replenish the water collection pan 143 with the help of an external water source. Figure 4 The dashed box on the left side of shows the control logic of replenishing water to the water distribution tray 142.

[0137] The above technical scheme realizes unified management and control of the water replenishment of the chilled water circulation loop and the cooling water circulation loop 1 through the second control system 7, thereby improving the automation and intelligence level of the system. Various sensors and the second control device 73 are used to monitor the system's pressure, water level, flow rate and other parameters in real time, and the water replenishment amount is automatically adjusted according to actual needs, thereby realizing precise control of the water replenishment operation.

[0138] See also Figures 5 to 7 The embodiment of the present invention provides a water replenishment method for an air conditioning system, which is implemented by the air conditioning system provided by any technical solution of the present invention. The water replenishment method for the air conditioning system includes the following steps:

[0139] Step S100, judging whether it is necessary to replenish water to the second inflow path 22. There are many ways to judge whether the second inflow path 22 needs to be replenished, such as using the first pressure detection element 41 described in the first group of embodiments or the second pressure detection element 71 described in the second group of embodiments to detect the pressure in the second inflow path 22, and judging whether it is necessary to replenish water to the second inflow path 22 by the pressure. It is also possible to replenish water to the second inflow path 22 regularly, and replenish a set amount of water to the second inflow path 22 every time a set interval is reached.

[0140] In actual applications, since the cooling water pump 15 must ensure both the water supply of the cooling water circulation loop and the timely replenishment of the chilled water circulation loop, there may be uneven flow distribution. The second pressure detection element 71 detects the pressure at the inlet of the chilled water pump 24 in real time. When the second control device 73 detects that the pressure at the suction port of the chilled water pump 24 is less than the preset value, the water replenishment instruction will be turned on to replenish the second inflow path 22 with water.

[0141] Step S200: If water needs to be added to the second inflow path 22, the water addition path 3 is opened. The water in the water addition path 3 comes from the cooling tower 14 of the cooling water circulation loop 1. As long as there is water in the water distribution tray 142 or the water collection tray 143 of the cooling tower 14, water can be added to the second inflow path 22.

[0142] According to the different connection positions of the water replenishment flow path 3, the water in the water replenishment flow path 3 may come from the water distribution pan 142 or the water collection pan 143. If the water in the water replenishment flow path 3 comes from the water distribution pan 142, the water in the water distribution pan 142 may be insufficient after the water in the water distribution pan 142 is replenished to the water replenishment flow path 3. In this case, the air conditioning system water replenishment method further includes the following steps to replenish the water in the water distribution pan 142, see Figure 6 .

[0143] Step S300, it is determined whether it is necessary to add water to the water distribution pan 142 of the cooling tower 14. When the amount of water in the water distribution pan 142 is lower than the lower limit of the water volume setting threshold of the water distribution pan 142, it is necessary to add water to the water distribution pan 142. Of course, in order to make the operation of the water distribution pan 142 more stable, the lower limit of the water volume setting threshold of the water distribution pan 142 can be set relatively high, for example, the lower limit of the water volume setting threshold of the water distribution pan 142 is 120% to 140% of the lowest working water level of the water distribution pan 142.

[0144] Step S400: If it is necessary to replenish water to the water distribution pan 142, the operating frequency of the cooling water pump 15 of the cooling water circulation loop 1 is increased. After the operating frequency of the cooling water pump 15 is increased, more water enters the water distribution pan 142 per unit time, thereby realizing the water replenishment operation of the water distribution pan 142. When the water volume in the water distribution pan 142 is lower than the upper threshold value set for the water volume in the water distribution pan 142, it is no longer necessary to replenish water to the water distribution pan 142, and the operating frequency of the cooling water pump 15 is adjusted to the normal operating frequency.

[0145] Since water needs to be replenished to the second inflow path 22 of the chilled water circulation loop 2, the overall water volume in the cooling water circulation loop 1 is reduced. In addition, since the operating frequency of the cooling water pump 15 increases, more water in the cooling water circulation loop 1 flows to the water distribution pan 142, resulting in a decrease in the water volume in the water collection pan 143. Then, the following method can be used to replenish water to the water collection pan 143. In some embodiments, see Figure 7 The air conditioning system water replenishment method also includes the following steps:

[0146] Step S500, it is determined whether it is necessary to add water to the water collecting pan 143 of the cooling tower 14. When the amount of water in the water collecting pan 143 is lower than the lower limit of the water amount setting threshold of the water collecting pan 143, it is necessary to add water to the water collecting pan 143. Of course, in order to make the operation of the water collecting pan 143 more stable, the lower limit of the water amount setting threshold of the water collecting pan 143 can be set relatively high, for example, the lower limit of the water amount setting threshold of the water collecting pan 143 is 120% to 140% of the lowest working water level of the water collecting pan 143.

[0147] Step S600: If water needs to be added to the water collecting pan 143, water is added to the water collecting pan 143 through an external water source. When the water level in the water collecting pan 143 is lower than the upper threshold of the water level setting of the water collecting pan 143, water is no longer needed to be added to the water collecting pan 143, and the external water source is turned off.

[0148] It should be noted that the above description takes the example of the water replenishment flow path 3 being connected to the water distribution pan 142 to describe the process of replenishing water to the water distribution pan 142 and the water collection pan 143. In the embodiment in which the water replenishment flow path 3 is connected to the water collection pan 143, since the amount of water in the cooling water circulation loop 1 is reduced, it is also necessary to determine whether it is necessary to replenish water to the water distribution pan 142 and the water collection pan 143. The adjustment of the judgment is the same as that in the embodiment described above, and the operation of replenishing water to the water distribution pan 142 and the water collection pan 143 is also the same as that in the embodiment described above, and will not be repeated here.

[0149] In addition, in each of the above-mentioned embodiments, when water is replenished to the chilled water circulation circuit 2, the cooling water circulation circuit 1 may stop working or continue working.

[0150] An embodiment of the present invention provides an air conditioning system water replenishment device, including a memory and a processor coupled to the memory, wherein the processor is configured to execute the air conditioning system water replenishment method in any one of the aforementioned embodiments based on instructions stored in the memory.

[0151] The memory may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, and other programs.

[0152] Some embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the air conditioning system water replenishment method in any of the above embodiments is implemented.

[0153] The processor described herein may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof designed to perform the functions described herein to implement or execute. A general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0154] Storage media can be any available media that can be accessed by a computer. As an example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other media that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. As used herein, disks (disk) and discs (disc) include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and blue-ray discs, wherein disks (disk) often reproduce data magnetically, and discs (disc) reproduce data optically with lasers. The above combination should also be included in the scope of computer-readable media.

[0155] Those skilled in the art will appreciate that the method embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0156] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0157] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0158] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0159] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the protection content of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0160] In the description of the present invention, each technical feature may be combined with other technical features where feasible.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air conditioning system, characterized in that: include: A cooling water circulation circuit (1) comprises a first heat exchanger (11), a first inflow path (12), a first outflow path (13) and a cooling tower (14); the first inflow path (12) and the first outflow path (13) are both connected to the first heat exchanger (11); A chilled water circulation circuit (2), comprising a second heat exchanger (21), a second inflow path (22) and a second outflow path (23); the second inflow path (22) and the second outflow path (23) are both connected to the second heat exchanger (21); one of the first heat exchanger (11) and the second heat exchanger (21) serves as an evaporator, and the other serves as a condenser; and A water replenishment flow path (3) is arranged between the cooling tower (14) and the second inflow flow path (22); the water replenishment flow path (3) includes an on state and an off state; when the water replenishment flow path (3) is in the on state, the water replenishment flow path (3) is configured to replenish water in the cooling tower (14) to the second heat exchanger (21).

2. The air conditioning system according to claim 1, characterized in that: The cooling tower (14) comprises: Tower (141); a water distribution tray (142) located inside the tower body (141); one end of the first outflow flow path (13) is in communication with the water distribution tray (142), and the other end of the first outflow flow path (13) is in communication with the first heat exchanger (11); and A water collecting pan (143) is also located inside the tower body (141), and the water distribution pan (142) is located above the water collecting pan (143); one end of the first inflow flow path (12) is in communication with the water collecting pan (143), and the other end of the first inflow flow path (12) is in communication with the first heat exchanger (11); One end of the water replenishment flow path (3) is in communication with the water distribution tray (142), and the other end of the water replenishment flow path (3) is in communication with the second inflow flow path (22).

3. The air conditioning system according to claim 2, characterized in that: The cooling tower (14) is placed on the top of a building, and the position of the water distribution tray (142) is higher than the position of the second inflow channel (22).

4. The air conditioning system according to claim 2 or 3, characterized in that: It also includes a first control system (4), wherein the first control system (4) includes: A first pressure detection element (41) is installed in the second inflow flow path (22), and the first pressure detection element (41) is configured to detect the fluid pressure in the second inflow flow path (22); a first switch valve (42), arranged in the water replenishment flow path (3); and The first control device (43) is signal-connected to the first switch valve (42) and the first pressure detection element (41), and the first control device (43) is constructed to control the conduction and disconnection of the first switch valve (42) according to the fluid pressure in the second inflow path (22) detected by the first pressure detection element (41).

5. The air conditioning system according to claim 4, characterized in that: The cooling water circulation system further comprises a cooling water pump (15), wherein the cooling water pump (15) is arranged in the first inflow path (12); The first control system (4) also includes: A first liquid level detection element (44) is installed in the water distribution tray (142), and the first liquid level detection element (44) is configured to detect the liquid level in the water distribution tray (142); the first liquid level detection element (44) is signal-connected to the first control device (43); The first control device (43) is configured to control the operating frequency of the cooling water pump (15) according to the liquid level information of the water distribution tray (142) detected by the first liquid level detection element (44).

6. The air conditioning system according to claim 5, characterized in that: The first control system (4) also includes: a second liquid level detection element (45) installed in the water collecting tray (143), the second liquid level detection element (45) being configured to detect the liquid level in the water collecting tray (143); the second liquid level detection element (45) being signal-connected to the first control device (43); The air conditioning system further comprises: a second switch valve (5) connected to the first control device (43) by signal; and The first replenishment flow path (6) is connected to the water collecting pan (143) to replenish water to the water collecting pan (143); the second switch valve (5) is installed on the first replenishment flow path (6) to control the conduction and disconnection of the first replenishment flow path (6); The first control device (43) is further configured to control the on / off state of the second switch valve (5) according to the liquid level in the water collecting tray (143) detected by the second liquid level detection element (45).

7. The air conditioning system according to claim 2, characterized in that: Also includes: A first water replenishment pump is disposed in the water replenishment flow path (3), and the first water replenishment pump is configured to replenish water in the water distribution tray (142) to the water replenishment flow path (3).

8. The air conditioning system according to claim 1, characterized in that: The cooling water circulation loop (1) further comprises a cooling water pump (15), wherein the cooling water pump (15) is arranged in the first inflow flow path (12); The chilled water circulation circuit (2) further comprises a chilled water pump (24), wherein the chilled water pump (24) is arranged in the second inflow path (22); One end of the water replenishment flow path (3) is connected to the outlet of the cooling water pump (15), and the other end of the water replenishment flow path (3) is connected to the inlet of the freezing water pump (24).

9. The air conditioning system according to claim 8, characterized in that: The cooling tower (14) comprises: Tower (141); a water distribution tray (142) located inside the tower body (141); one end of the first outflow flow path (13) is in communication with the water distribution tray (142), and the other end of the first outflow flow path (13) is in communication with the first heat exchanger (11); and The water collecting tray (143) is also located inside the tower body (141), and the water distribution tray (142) is located above the water collecting tray (143); one end of the first inflow flow path (12) is connected to the water collecting tray (143), and the other end of the first inflow flow path (12) is connected to the first heat exchanger (11).

10. The air conditioning system according to claim 9, characterized in that: The invention also comprises a second control system (7), wherein the second control system (7) comprises: A second pressure detection element (71) is installed in the second inflow passage (22), and the second pressure detection element (71) is configured to detect the fluid pressure in the second inflow passage (22); a third switch valve (72), arranged in the water replenishment flow path (3); and The second control device (73) is signal-connected to the third switch valve (72) and the second pressure detection element (71), and the second control device (73) is constructed to control the conduction and disconnection of the third switch valve (72) according to the fluid pressure in the second inflow path (22) detected by the second pressure detection element (71).

11. The air conditioning system according to claim 10, characterized in that: The second control system (7) further comprises: A first flow detection element (74) is installed in the first inflow path (12), and the first flow detection element (74) is located downstream of the cooling water pump (15); the first flow detection element (74) is signal-connected to the second control device (73), and the second control device (73) is constructed to control the operating frequency of the cooling water pump (15) according to the flow detected by the first flow detection element (74).

12. The air conditioning system according to claim 11, characterized in that: The second control system (7) further comprises: A second flow detection element (75) is installed in the water replenishment flow path (3), and the second flow detection element (75) is located upstream of the chilled water pump (24); the second flow detection element (75) is signal-connected to the second control device (73), and the second control device (73) is constructed to control the operating frequency of the cooling water pump (15) according to the flow detected by the first flow detection element (74) and the flow detected by the second flow detection element (75) to maintain the water level in the water distribution tray (142).

13. The air conditioning system according to claim 10, characterized in that: The second control system (7) further comprises a third liquid level detection element (76), wherein the third liquid level detection element (76) is installed in the water collecting tray (143), and the third liquid level detection element (76) is configured to detect the liquid level in the water collecting tray (143); The third liquid level detection element (76) is connected to the second control device (73) via a signal; The air conditioning system further comprises: a fourth switch valve (8) connected to the second control device (73) by signal; and The second replenishment flow path (9) is connected to the water collecting pan (143) to replenish water to the water collecting pan (143); the fourth switch valve (8) is installed on the second replenishment flow path (9) to control the conduction and disconnection of the second replenishment flow path (9); The second control device (73) is further configured to control the on / off state of the fourth switch valve (8) according to the liquid level in the water collecting tray (143) detected by the third liquid level detection element (76).

14. A method for replenishing water in an air conditioning system, characterized in that: The air conditioning system according to any one of claims 1 to 13 is used to implement the water replenishment method of the air conditioning system, comprising the following steps: Determining whether it is necessary to replenish water to the second inflow path (22); If water needs to be replenished to the second inflow flow path (22), the water replenishment flow path (3) is opened.

15. The air conditioning system water replenishment method according to claim 14, characterized in that: The following steps are also included: Determining whether it is necessary to add water to the water distribution tray (142) of the cooling tower (14); If it is necessary to replenish water to the water distribution tray (142), the operating frequency of the cooling water pump (15) of the cooling water circulation loop (1) is increased.

16. The air conditioning system water replenishment method according to claim 14, characterized in that: The following steps are also included: Determining whether it is necessary to add water to the water collecting pan (143) of the cooling tower (14); If it is necessary to replenish water to the water collecting tray (143), the water collecting tray (143) is replenished with water through an external water source.

17. A water replenishing device for an air conditioning system, characterized in that: include: Memory; and A processor coupled to the memory, wherein the processor is configured to execute the air conditioning system water replenishment method according to any one of claims 14 to 16 based on instructions stored in the memory.

18. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the air conditioning system water replenishment method as described in any one of claims 14 to 16 is implemented.

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