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

Abstract

This invention discloses an air conditioning system, a water replenishment method, an apparatus, and a readable storage medium, relating to the field of air conditioning, for enabling a shared water replenishment system for a chilled water circulation system and a cooling water circulation system. The air conditioning system includes a cooling water circulation loop, a chilled water circulation loop, and a water replenishment path. The cooling water circulation loop includes a first heat exchanger, a first inflow path, a first outflow path, and a cooling tower; both the first inflow path and the first outflow path are connected to the first heat exchanger. The chilled water circulation loop includes a second heat exchanger, a second inflow path, and a second outflow path; both the second inflow path and the second outflow path are connected to 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 replenishment path is located between the cooling tower and the second inflow path; the water replenishment path is configured to replenish water from the cooling tower to the second heat exchanger. This solution enables the cooling water circulation loop and the chilled water circulation loop to share a single water replenishment device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning, in particular to an air conditioning system, a water supplementing method, a device and a readable storage medium. BACKGROUND

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

[0003] The inventor finds that at least the following problems exist in the prior art: in the related art, the chilled water circulation system and the cooling tower system each use a separate water supplementing system, which not only increases the complexity and cost of the equipment, but also occupies more installation space, especially in buildings with limited space, this problem is more prominent. SUMMARY

[0004] The present application provides an air conditioning system, a water supplementing method, a device and a readable storage medium, which can supplement water to the chilled water circulation system and the cooling water circulation system while reducing the occupied space of the air conditioning system.

[0005] An air conditioning system is provided in the embodiments of the present application, comprising:

[0006] a cooling water circulation loop, comprising 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 are both in communication with the first heat exchanger;

[0007] a chilled water circulation loop, comprising 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 in communication with the second heat exchanger; one of the first heat exchanger and the second heat exchanger serves as an evaporator, and the other serves as a condenser; and

[0008] a water supplementing flow path, 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.

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

[0010] a tower body;

[0011] a water distribution plate located inside the tower body; one end of the first outflow flow path is in communication with the water distribution plate, and the other end of the first outflow flow path is in communication with the first heat exchanger; and

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

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

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

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

[0016] A first pressure detection element is 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 on-off valve is arranged in the water supplement flow path; and

[0018] A first control device is in signal connection with the first on-off valve and the first pressure detection element, and the first control device is configured to control the conduction and disconnection of the first on-off valve according to the fluid pressure in the second inflow flow path detected by the first pressure detection element.

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

[0020] The first control system further comprises:

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

[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 in signal connection with the first control device;

[0025] The air conditioning system further comprises:

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

[0027] a first make-up flow path in communication with the water collecting pan to supply water to the water collecting pan; the second switch valve is installed in the first make-up flow path to control the on / off of the first make-up flow path;

[0028] wherein the first control device is further configured to control the on / off of the second switch valve according to the water level in the water collecting pan detected by the second water level detecting element.

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

[0030] a first water supply pump disposed in the water supply flow path, the first water supply pump being configured to supply water in the water distribution pan to the water supply flow path.

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

[0032] a cooling water pump disposed in the first inflow flow path; and

[0033] a chilled water pump disposed in the second inflow flow path.

[0034] wherein one end of the water supply flow path is in communication with the outlet of the cooling water pump, and the other end of the water supply flow path is in communication with the inlet of the chilled water pump.

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

[0036] a tower body;

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

[0038] a water collecting pan also inside the tower body, and the water distribution pan is above the water collecting pan; one end of the first inflow flow path is in communication with the water collecting pan, and the other end of the first inflow flow path is in communication with the first heat exchanger.

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

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

[0041] a third switch valve disposed in the water supply flow path; and

[0042] A second control device is in signal connection with the third switch valve and the second pressure detecting element, and is configured to control the conduction and disconnection of the third switch valve according to the fluid pressure in the second inflow passage detected by the second pressure detecting element.

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

[0044] A first flow detecting element is installed in the first inflow passage and is located downstream of the cooling water pump; the first flow detecting element is in signal connection with the second control device, and the second control device is configured to control the operating frequency of the cooling water pump according to the flow detected by the first flow detecting element.

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

[0046] A second flow detecting element is installed in the makeup water passage and is located upstream of the chilled water pump; the second flow detecting element is in signal connection with the second control device, and the second control device is configured to control the operating frequency of the cooling water pump according to the flow detected by the first flow detecting element and the flow detected by the second flow detecting element, so as 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 detecting element is installed in the water collecting tray and is configured to detect the liquid level in the water collecting tray; the third liquid level detecting element is in signal connection with the second control device;

[0049] The air conditioning system further comprises:

[0050] A fourth switch valve is in signal connection with the second control device; and

[0051] A second makeup water passage is in communication with the water collecting tray to supply water to the water collecting tray; the fourth switch valve is installed in the second makeup water passage to control the conduction and disconnection of the second makeup water passage;

[0052] The second control device is further configured to control the conduction and disconnection of the fourth switch valve according to the liquid level in the water collecting tray detected by the third liquid level detecting element.

[0053] The embodiments of the present application also provide an air conditioning system makeup water method, which is implemented by using the air conditioning system provided by any of the technical solutions of the present application, and comprises the following steps:

[0054] determining whether water needs to be supplied to the second inflow flow path;

[0055] if water needs to be supplied to the second inflow flow path, turning on the water supply flow path.

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

[0057] determining whether water needs to be supplied to the water distribution tray of the cooling tower;

[0058] if water needs to be supplied to the water distribution tray, increasing the working frequency of the cooling water pump of the cooling water circulation loop.

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

[0060] determining whether water needs to be supplied to the water collection tray of the cooling tower;

[0061] if water needs to be supplied to the water collection tray, supplying water to the water collection tray through an external water source.

[0062] The embodiment of the present application also provides an air conditioning system water supply device, comprising:

[0063] a memory; and

[0064] a processor coupled to the memory, the processor being configured to execute the air conditioning system water supply method provided by any of the technical solutions of the present application based on instructions stored in the memory.

[0065] The embodiment of the present application also provides a computer readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the air conditioning system water supply method provided by any of the technical solutions of the present application.

[0066] The air conditioning system provided by the above technical solution comprises a cooling water circulation loop, a chilled water circulation loop and a water supply flow path, the water supply flow path being arranged between the cooling tower and the second inflow flow path, so that water in the cooling tower can be introduced into the second inflow flow path through the water supply flow path. When the chilled water circulation loop lacks water, a separate water supply system does not need to be arranged for the chilled water circulation loop, but water can be directly supplied by using water in the cooling tower of the cooling water circulation loop. The above technical solution realizes that the cooling water circulation loop and the chilled water circulation loop share one set of water supply equipment, thereby significantly reducing equipment cost and installation space requirement, reducing maintenance cost and operation complexity. The above technical solution also reduces maintenance cost, because the cooling water circulation loop and the chilled water circulation loop share one set of water supply equipment, the number of water supply equipment is reduced, and the maintenance workload is also reduced accordingly. The maintenance and maintenance work of multiple water supply systems is reduced, the human and material resources cost is reduced, and the reliability and stability of the system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0067] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0068] Figure 1 Structure diagram of air conditioning system according to some embodiments of the present application.

[0069] Figure 2 Control logic diagram of air conditioning system according to some embodiments of the present application.

[0070] Figure 3 Structure diagram of air conditioning system according to some other embodiments of the present application.

[0071] Figure 4 Control logic diagram of air conditioning system according to some other embodiments of the present application.

[0072] Figure 5 Water supplement method of air conditioning system according to some embodiments of the present application.

[0073] Figure 6 Water supplement method of air conditioning system according to some embodiments of the present application, water supplement to water distribution plate.

[0074] Figure 7 Water supplement method of air conditioning system according to some embodiments of the present application, water supplement to water collection plate.

[0075] Reference signs:

[0076] 1, cooling water circulation loop; 2, chilled water circulation loop; 3, water supplement flow path; 4, first control system; 5, second on-off valve; 6, first water supplement flow path; 7, second control system; 8, fourth on-off valve; 9, second water supplement flow path;

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

[0078] 141, tower body; 142, water distribution plate; 143, water collection plate;

[0079] 21, second heat exchanger; 22, second inflow flow path; 23, second outflow flow path; 24, chilled water pump;

[0080] 41, first pressure detecting element; 42, first on-off valve; 43, first control device; 44, first liquid level detecting element; 45, second liquid level detecting element; 46, fifth on-off valve; 47, check element;

[0081] 71. Second pressure sensing element; 72. Third switching valve; 73. Second control device; 74. First flow sensing element; 75. Second flow sensing element; 76. Third liquid level sensing element; 77. Sixth switching valve; 78. Check valve; 79. Pressure regulating valve; 70. Third pressure sensing element. Detailed Implementation

[0082] The following is combined with Figures 1-7 The technical solutions provided by this invention will be described in more detail below. The descriptions of exemplary embodiments are merely illustrative and are in no way intended to limit this disclosure or its application or use. This disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make this disclosure thorough and complete, and to fully express the scope of this disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0083] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as “including” or “contains” mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility of covering other elements as well.

[0084] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or 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 intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0085] All terms used in this disclosure, including technical or scientific terms, have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0086] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment shall be considered part of the specification.

[0087] The dimensions of the various parts shown in the drawings are not necessarily to scale. Identical structure elements or structure elements of the same kind are provided with the same reference signs in the various figures and repeated description thereof is omitted as appropriate.

[0088] Referring to Figure 1 and Figure 2 , the embodiment of the present application provides an air conditioning system, which comprises a cooling water circulation loop 1, a chilled water circulation loop 2 and a make-up water flow path 3. The cooling water circulation loop 1 comprises a first heat exchanger 11, a first inflow flow path 12 and a first outflow flow path 13, both of which are in communication with the first heat exchanger 11, and a cooling tower 14. The chilled water circulation loop 2 comprises a second heat exchanger 21, a second inflow flow path 22 and a second outflow flow path 23, both of which are in communication with 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. The make-up water flow path 3 is arranged between the cooling tower 14 and the second inflow flow path 22. The make-up water flow path 3 comprises a conducting state and a disconnecting state. When the make-up water flow path 3 is in the conducting state, the make-up water 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 loop, and the refrigerant flows between the first heat exchanger 11 and the second heat exchanger 21, and heat is released and absorbed as the state of the refrigerant changes. Specifically, in the refrigerant circulation loop, the refrigerant is first compressed by a compressor from a gaseous state to 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 the condenser and the second heat exchanger 21 is the evaporator), and in the condenser, the refrigerant exchanges heat with the external cooling medium (in the embodiment, it is specifically the water in the cooling water circulation loop 1), thereby releasing heat and causing the refrigerant to change from a gaseous state to a liquid state, becoming high-pressure liquid refrigerant. After expansion, the high-pressure liquid refrigerant forms a gas-liquid two-phase state. Subsequently, the gas-liquid two-phase refrigerant enters the second heat exchanger 21 (evaporator). The refrigerant absorbs heat from the outside (water in the chilled water circulation loop 2) in the second heat exchanger 21, and the liquid refrigerant continuously evaporates to become gaseous, and the temperature and pressure of the refrigerant remain essentially unchanged (at the evaporation pressure and temperature) during this process, until all of it becomes gaseous refrigerant, which is then sucked into the compressor to start the next cycle.

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

[0091] In some embodiments, the cooling tower 14 includes a tower body 141, a water distribution plate 142, and a water collecting plate 143. The water distribution plate 142 is located inside the tower body 141; one end of the first outflow flow path 13 communicates with the water distribution plate 142, and the other end of the first outflow flow path 13 communicates with the first heat exchanger 11. The water collecting plate 143 is also located inside the tower body 141, and the water distribution plate 142 is located above the water collecting plate 143. One end of the first inflow flow path 12 communicates with the water collecting plate 143, and the other end of the first inflow flow path 12 communicates with the first heat exchanger 11. Wherein, one end of the make-up water flow path 3 communicates with the water distribution plate 142, and the other end of the make-up water flow path 3 communicates with the second inflow flow path 22.

[0092] The above technical solution, the make-up water flow path 3 can be provided with a power component, or can not be provided with a power component. If the power component is provided, the position of the water distribution plate 142 can be lower than the second inflow flow path 22, or can be higher than the second inflow flow path 22. If the power component is not provided, the position of the water distribution plate 142 is higher than the second inflow flow path 22, so that the water in the water distribution plate 142 can flow to the second inflow flow path 22 by gravity.

[0093] In some embodiments, the air conditioning system further includes a first make-up water pump (not shown in the figure), which is arranged in the make-up water flow path 3 and is configured to pump the water in the water distribution plate 142 into the make-up water flow path 3. The above technical solution can more flexibly arrange the position of the water distribution plate 142 by arranging the first make-up water pump.

[0094] In some embodiments, the cooling tower 14 is placed on the roof of the building, and the position of the water distribution plate 142 is higher than the position of the second inflow flow path 22. The cooling tower 14 is placed high, and the water distribution plate 142 is located in the middle and upper part of the cooling tower 14, and the position of the water distribution plate 142 is also relatively high. The second inflow flow path 22 is generally close to the ground or the indoor ground of the building, and the position of the water distribution plate 142 is higher than the position of the second inflow flow path 22. The water flowing out of the water distribution plate 142 can flow to the second inflow flow path 22 uniformly by gravity. Therefore, it is not necessary to set a power component, so that the number of components of the air conditioning system is reduced, the energy consumption caused by the power component is reduced, the dependence on the power component is reduced, and the phenomenon that the water cannot be supplemented due to damage or failure of the power component does not occur. In addition, the cooling tower 14 is placed high, and the possibility of pollution of the water at a high place is relatively small. Dust and sundries on the ground are not easy to enter the water in the cooling tower 14 placed on the roof of the building, which is beneficial to maintain the water quality of the cooling water circulation system, so that the water supplemented to the sub-chilled water circulation system is also cleaner.

[0095] Continuing to refer to Figure 1 In some embodiments, the air conditioning system further comprises a first control system 4, which comprises a first pressure detection element 41, a first on-off valve 42, and a first control device 43. The first pressure detection element 41 is installed in the second inflow flow path 22, and is configured to detect the fluid pressure in the second inflow flow path 22. The first on-off valve 42 is arranged in the water supplement flow path 3. The first control device 43 is in signal connection with the first on-off valve 42 and the first pressure detection element 41, and is configured to control the conduction and disconnection of the first on-off valve 42 according to the fluid pressure in the second inflow flow 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 flow path 22, and is located upstream of the chilled water pump 24 described below. 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. According to the detected fluid pressure in the second inflow flow path 22, the first pressure detection element 41 can determine whether the fluid in the second inflow flow path 22 is sufficient. Through the first pressure detection element 41, the fluid pressure in the second inflow flow path 22 can be supplemented to a constant value range, that is, the constant pressure water supplement is realized, so as to ensure the stability and efficiency of the system. The constant pressure water supplement can also be realized in each embodiment described below.

[0097] The first switch valve 42 can specifically adopt an electric switch valve. The electric switch valve can realize precise control of the opening and closing of the water supplement flow path 3. Compared with a manual valve, the electric switch valve can be accurately opened and closed according to a preset program or signal. Moreover, the electric switch valve has high automation and can be remotely controlled. An operator does not need to arrive at the scene to control the state of the electric switch valve, which greatly improves work efficiency and safety; and only a small number of monitoring personnel in the control center can manage a large number of valves, thereby saving a large amount of labor cost. 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 operation efficiency and reliability of the entire system. The electric switch valve has good safety performance. In the event of power failure, signal interruption or equipment failure, the electric switch valve can automatically switch to a preset safe state.

[0098] If it is detected that the fluid in the second inflow flow 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 supplement flow path 3 is also turned on. The water in the water distribution plate 142 of the cooling tower 14 can flow to the second inflow flow path 22. In this way, water supplement from the cooling water circulation system to the chilled water circulation system is realized. When the fluid pressure in the second inflow flow path 22 detected by the first pressure detection element 41 meets the set value, the first control device 43 closes the first switch valve 42, and the water supplement flow path 3 is also closed. At this time, there is no need to supplement water to the chilled water circulation system.

[0099] Continuing to refer to Figure 1 and Figure 2 In some embodiments, the cooling water circulation system further comprises a cooling water pump 15 arranged in the first inflow flow path 12. The first control system 4 further comprises a first liquid level detection element 44 installed in the water distribution plate 142, the first liquid level detection element 44 being configured to detect the liquid level in the water distribution plate 142; the first liquid level detection element 44 is in signal connection with 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 plate 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. The contact liquid level detection element is, for example, a float ball type liquid level sensor, a float cylinder type liquid level sensor, a capacitive liquid level sensor, a conductive liquid level sensor, a magnetostrictive liquid level sensor, a thermal resistance liquid level sensor, or the like. The non-contact liquid level detection element is, for example, an ultrasonic liquid level sensor, a radar type liquid level sensor, a photoelectric liquid level sensor, a microwave liquid level sensor, or the like. The first liquid level detection element 44 can stably and reliably detect the liquid level in the water distribution tray 142, has a fast detection speed, has a high detection accuracy, and can transmit the detection result to the first control device 43 in real time, so as to accurately control the operation state of the cooling water pump 15.

[0101] Since the water in the water distribution tray 142 needs to be used to supplement when the water amount in the chilled water circulation loop 2 is insufficient, the water in the water distribution tray 142 of the cooling water circulation loop 1 can be reduced too much, so that the water distribution requirement cannot be met. Therefore, the first control system 4 further comprises a first liquid level detection element 44, which detects the liquid level information of the water distribution tray 142 in real time. When the liquid level in the water distribution tray 142 is reduced to the lower limit of the water level threshold of the water distribution tray 142, the operation frequency of the cooling water pump 15 needs to be increased, so that the water in the water collecting tray 143 is quickly transported to the water distribution tray 142, thereby increasing the water level of the water distribution tray 142 to meet the water distribution requirement of the water distribution tray 142. The lower limit of the water level threshold of the water distribution tray 142 is a set value, which is set in advance according to the working condition.

[0102] In some embodiments, the first control system 4 further comprises 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 signal connected with the first control device 43. The air conditioning system further comprises a second on-off valve 5 and a first supplementary flow path 6. The second on-off valve 5 is signal connected with the first control device 43. The water source of the first supplementary flow path 6 comes from outside the air conditioning system, for example, from a municipal water pipe. The first supplementary flow path 6 is communicated with the water collecting tray 143 to supply water to the water collecting tray 143; the second on-off valve 5 is installed in the first supplementary flow path 6 to control the conduction and disconnection of the first supplementary flow path 6. The first control device 43 is further configured to control the conduction and disconnection of the second on-off 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-type or a non-contact-type liquid level detection element. Contact-type liquid level detection elements include, for example, float-type liquid level sensors, capacitive liquid level sensors, conductivity liquid level sensors, magnetostrictive liquid level sensors, and resistance temperature detectors (RTD) liquid level sensors. Non-contact-type liquid level detection elements include, for example, ultrasonic liquid level sensors, radar liquid level sensors, photoelectric liquid level sensors, and microwave liquid level sensors. Using the second liquid level detection element 45 can stably and reliably detect the liquid level in the collection pan 143, with fast detection speed and high accuracy. The detection results can be transmitted to the first control device 43 in real time. The first control device 43 can then promptly control the opening and closing of the second switching valve 5 to open or close the first supply flow path 6, thereby realizing the water replenishment operation of the collection pan 143.

[0104] Specifically, when the second liquid level detection element 45 detects that the liquid level in the water collection tray 143 is lower than the lower limit of the water level threshold of the water collection tray 143, it activates the second switching valve 5, replenishing water to the water collection tray 143 through the first replenishment flow path 6. When the second liquid level detection element 45 detects that the liquid level in the water collection tray 143 is higher than or equal to the upper limit of the water level threshold of the water collection tray 143, it deactivates the second switching valve 5, ceasing to replenish water to the water collection tray 143 through the first replenishment flow path 6. Both the lower and upper limits of the water level threshold of the water collection tray 143 are preset values, pre-set according to the operating conditions.

[0105] The following describes the water replenishment process for the air conditioning system.

[0106] Under certain operating 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 small and will not affect the normal operation of the water distribution plate 142 and the water collection plate 143. Therefore, only water needs to be replenished to the chilled water circulation loop 2.

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

[0108] In some other working conditions, the chilled water circulation loop 2 of the air conditioning system needs to be supplemented with water, and the water supplement amount is large, which affects the normal operation of the water distribution plate 142 and the water collection plate 143, so water needs to be supplemented to the chilled water circulation loop 2, and the working frequency of the cooling water pump 15 also needs to be increased to increase the water amount in the water distribution plate 142; and the water collection plate 143 also needs to be supplemented with water by means of an external water source. Figure 2 The left dashed box in FIG. 1 schematically shows the control logic for supplementing water to the water distribution plate 142.

[0109] In some embodiments, the first control system 4 further comprises a fifth switch valve 46 for controlling the opening and closing of the first inflow flow path 12, thereby controlling whether water can flow into the first heat exchanger 11.

[0110] In some embodiments, the first control system 4 further comprises two check elements 47, one of which is arranged in the first inflow flow path 12, and the other of which is arranged in the water supplement flow path 3. The check elements 47 are used to prevent backflow of water in the first inflow flow path 12 and the water supplement flow path 3. The check elements 47 are specifically check valves. Specifically, considering that the pressure at the suction port of the chilled water pump 24 and the pressure at the outlet of the cooling water pump 15 are not balanced, for example, the pressure at the suction port of the chilled water pump is too large, which can cause backflow of cooling water, or the start and stop of the cooling water pump 15 can cause backflow of water supplement, therefore, the check elements 47 are arranged on the first inflow flow path 12 and the water supplement flow path 3 respectively to prevent backflow.

[0111] The above technical solution realizes unified management and control of water supplement of the chilled water circulation loop and the cooling water circulation loop 1 through the first control system 4, improves the automation degree and intelligent level of the system, and uses various sensors and the first control device 43 to monitor parameters such as pressure, water level and flow rate of the system in real time, automatically adjusts the water supplement amount according to actual needs, and realizes accurate control of the water supplement operation.

[0112] Referring to Figure 3 and Figure 4 , some other embodiments will be introduced below.

[0113] The present embodiment is different from the above embodiments at least in that the position where the water supplement flow path 3 is arranged is different.

[0114] In some embodiments, the air conditioning system further comprises a cooling water pump 15 and a chilled water pump 24, the cooling water pump 15 is arranged in the first inflow flow path 12, and the chilled water pump 24 is arranged in the second inflow flow path 22. One end of the water supplement flow path 3 is in communication with the outlet of the cooling water pump 15, and the other end of the water supplement flow path 3 is in communication with the inlet of the chilled water pump 24.

[0115] In various embodiments herein, the cooling water pump 15 and the chilled water pump 24 can be provided with a VFD (Variable-Frequency Drive). Using the VFD, the rotation speed of the water pump can be flexibly adjusted according to the indoor and outdoor temperatures and the cooling demand, avoiding the water pump from always running at a high rotation speed, thereby reducing the energy consumption and prolonging the service life of the equipment.

[0116] When the water amount in the second inflow flow path 22 is insufficient, the water supplement flow path 3 supplements the water in the water collecting tray 143 to the second inflow flow path 22 by means of the cooling water pump 15, so that a separate water supplement system does not need to be provided for the chilled water circulation loop 2, and the cooling water circulation loop 1 and the chilled water circulation loop 2 share one set of water supplement equipment, thereby significantly reducing the equipment cost and the installation space requirement, reducing the maintenance cost and the operation complexity.

[0117] Continuing to refer to 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 collecting tray 143. The water distribution tray 142 is located inside the tower body 141; one end of the first outflow flow path 13 communicates with the water distribution tray 142, and the other end of the first outflow flow path 13 communicates with the first heat exchanger 11. 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 communicates with the water collecting tray 143, and the other end of the first inflow flow path 12 communicates with the first heat exchanger 11.

[0118] The portion of the first inflow flow path 12 downstream of the cooling water pump 15 forms two branches in parallel with the water supplement flow path 3, and the first inflow flow path 12 and the water supplement flow path 3 share one cooling water pump 15, so that the number of components required by the air conditioning system is small, the system integration degree is high, and the water supplement amount is higher under the action of the cooling water pump 15, and the water supplement speed is more convenient to control.

[0119] Continuing to refer to Figure 3 and Figure 4 In some embodiments, the air conditioning system further includes a second control system 7, and the second control system 7 includes a second pressure detection element 71, a third on-off valve 72, and a second control device 73. The second pressure detection element 71 is installed in the second inflow flow path 22, and the second pressure detection element 71 is configured to detect the fluid pressure in the second inflow flow path 22. The third on-off valve 72 is arranged in the water supplement flow path 3. The second control device 73 is in signal connection with the third on-off 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 on-off valve 72 according to the fluid pressure in the second inflow flow path 22 detected by the second pressure detection element 71.

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

[0121] The third on-off valve 72 can be an electric on-off valve, which can achieve precise control of the opening and closing of the water supply flow path 3. Compared with a manual valve, the electric on-off valve can be accurately opened and closed according to a preset program or signal. Moreover, the electric on-off valve has high automation and can be remotely controlled. The operator does not need to be on site to control the state of the electric on-off valve, greatly improving work efficiency and safety; and only a small number of monitoring personnel in the control center can manage a large number of valves, thereby saving a large amount of labor cost. The third on-off valve 72 cooperates with the second control device 73 to achieve automatic control and improve the intelligence of control, thereby improving the operation efficiency and reliability of the entire system. The electric on-off valve has good safety performance, and in the event of power failure, signal interruption or equipment failure, etc., the electric on-off valve can automatically switch to a preset safe state.

[0122] If it is detected that the fluid in the second inflow flow path 22 is insufficient, the second control device 73 opens the third on-off valve 72, and after the third on-off valve 72 is turned on, the water supply flow 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 flow path 22. In this way, water supply from the cooling water circulation system to the chilled water circulation system is achieved. When the fluid pressure in the second inflow flow path 22 detected by the second pressure detecting element 71 meets the set value, the second control device 73 closes the third on-off valve 72, and the water supply flow path 3 is also closed, at which time there is no need to supply water to the chilled water circulation system.

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

[0124] In some embodiments, the second control system 7 further comprises a first flow detection element 74, which is installed in the first inflow flow path 12 and downstream of the cooling water pump 15. The first flow detection element 74 is in signal connection with the second control device 73, which 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 downstream of the cooling water pump 15 in real time, which represents the amount of water entering the first heat exchanger 11. The water from 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 makeup water flow path 3. If the amount of water divided into the makeup water flow path 3 is too much after the makeup water flow path 3 is turned on, the amount of water distributed into the first heat exchanger 11 is less, which may cause the water in the subsequent water distribution tray 142 to be insufficient. Therefore, the operating frequency of the cooling water pump 15 needs to be increased 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 control of the makeup water amount and pressure, and realize the balance of the makeup water flow distribution of the refrigeration side (the chilled water circulation loop 2) and the cooling side (the cooling water circulation loop 1) and the pressure stability of the chilled water circulation system under different operating modes.

[0126] In other embodiments, in order to facilitate the control of the opening and closing of the first inflow flow path 12, the second control system 7 further comprises a sixth on-off 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 degree of the sixth on-off valve 77, the third on-off valve 72 and the operating frequency of the cooling water pump 15, the flow distribution into the sixth on-off valve 77 and the third on-off valve 72 can be controlled to make the flow into both reach a preset value, meet the flow demand of the cooling water circulation loop and the chilled water circulation loop, and further realize precise control of the makeup water amount of the cooling water circulation loop to the chilled water circulation loop.

[0127] In other embodiments, the two branches are each provided with a check valve 78. Considering that the pressure at the suction port of the chilled water pump 24 and the outlet port of the cooling water pump 15 is not balanced, for example, the pressure at the suction port of the chilled water pump is too large, which may cause the cooling water to flow back, or the start and stop of the cooling water pump 15 may cause the makeup water to flow back, therefore, the check valves 78 are arranged on the cooling water and makeup water pipes respectively to prevent backflow.

[0128] In some embodiments, the second control system 7 further comprises a pressure regulating valve 79, which is arranged in the makeup water flow path 3. The pressure regulating valve 79 can regulate the pressure of the makeup water flow path 3, so as to realize constant pressure makeup water for the second inflow path 22. The pressure regulating valve 79 can also absorb and regulate pressure fluctuation, so as to avoid pressure impact on the chilled water circulation system.

[0129] In some embodiments, the second control system 7 further comprises a second flow detection element 75, which is arranged in the makeup water flow path 3 and upstream of the chilled water pump 24. The second flow detection element 75 is in signal connection with the second control device 73. 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 and the flow detected by the second flow detection element 75, so as to maintain the water level in the distribution tray 142.

[0130] The second flow detection element 75 can be a differential pressure type flow detection element, a volumetric type flow detection element, a velocity type flow detection element, a mass type flow detection element, etc. The second flow detection element 75 can detect the flow entering the makeup water flow path 3 in real time, which represents the amount of water for makeup water for the second inflow path 22. If the amount of water branched into the makeup water flow path 3 is too much, the amount of water distributed into the first heat exchanger 11 will be less, which can cause insufficient water in the subsequent distribution tray 142. Therefore, the second control device 73 can realize more accurate control of 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, so as to ensure sufficient water in the distribution tray 142.

[0131] Continuing to refer to Figure 3 and Figure 4 In some embodiments, the air conditioning system further comprises a third liquid level detection element 76, which is arranged in the collecting tray 143 and configured to detect the liquid level in the collecting tray 143. The third liquid level detection element 76 is in signal connection with the second control device 73. The air conditioning system further comprises a fourth on-off valve 8 and a second makeup water flow path 9. The fourth on-off valve 8 is in signal connection with the second control device 73. The second makeup water flow path 9 can be in communication with an external water source, such as a municipal pipeline, so as to realize makeup water for the second makeup water flow path 9. The second makeup water flow path 9 is in communication with the collecting tray 143, so as to supply makeup water to the collecting tray 143. The fourth on-off valve 8 is arranged in the second makeup water flow path 9, so as to control the on-off of the second makeup water flow path 9. The second control device 73 is further configured to control the on-off of the fourth on-off valve 8 according to the liquid level in the collecting tray 143 detected by the third liquid level detection element 76.

[0132] The third liquid level detecting element 76 can be a contact liquid level detecting element or a non-contact liquid level detecting element. The contact liquid level detecting element is, for example, a float ball type liquid level sensor, a float cylinder type liquid level sensor, a capacitive liquid level sensor, a conductive liquid level sensor, a magnetostrictive liquid level sensor, a thermal resistance liquid level sensor, or the like. The non-contact liquid level detecting element is, for example, an ultrasonic liquid level sensor, a radar type liquid level sensor, a photoelectric liquid level sensor, a microwave liquid level sensor, or the like. The second liquid level detecting element 45 can be used to stably and reliably detect the liquid level in the collecting pan 143, and the detection speed is fast, the detection precision is high, and the detection result can be transmitted to the first control device 43 in real time, so that the fourth on-off valve 8 is controlled to be turned on or turned off by the second control device 73, so as to turn on or turn off the second make-up flow path 9, and then the water make-up operation of the collecting pan 143 is realized.

[0133] The water make-up control method of the air conditioning system will be described below.

[0134] In some working conditions, when the chilled water circulation loop 2 of the air conditioning system needs to be watered, the water make-up amount is small, which does not affect the normal work of the water distribution pan 142 and the collecting pan 143, so only the chilled water circulation loop 2 needs to be watered.

[0135] In another working condition, when the chilled water circulation loop 2 of the air conditioning system needs to be watered, the water make-up amount is small, which does not affect the normal work of the water distribution pan 142 and the collecting pan 143, but since the water make-up source is the water distribution pan 142, the water amount of the water distribution pan 142 may be small in a short period of time, so the chilled water circulation loop 2 needs to be watered, and the working frequency of the cooling water pump 15 needs to be increased to increase the water amount in the water distribution pan 142. At this time, the water distribution pan 142 can be directly watered, and a liquid level detecting element for detecting the liquid level of the water distribution pan 142 is not needed. In this working condition, the collecting pan 143 does not need to be watered. Referring to the left dashed box of FIG. 1, Figure 4 , Figure 4 The left dashed box of FIG. 1 illustrates the control logic of the chilled water circulation loop 2 pressure make-up and water distribution pan 142 water make-up.

[0136] In another working condition, when the chilled water circulation loop 2 of the air conditioning system needs to be watered, the water make-up amount is large, which affects the normal work of the water distribution pan 142 and the collecting pan 143, so the chilled water circulation loop 2 needs to be watered, the working frequency of the cooling water pump 15 needs to be increased to increase the water amount in the water distribution pan 142, and the collecting pan 143 needs to be watered by an external water source. Figure 4 The left dashed box of FIG. 1 illustrates the control logic of the water distribution pan 142 water make-up.

[0137] The above technical scheme realizes unified management and control of water supplement of the chilled water circulation loop and the cooling water circulation loop 1 through the second control system 7, improves the automation degree and intelligent level of the system, and realizes real-time monitoring of system pressure, water level and flow and the like by using various sensors and the second control device 73, automatically adjusts the water supplement amount according to actual needs, and realizes accurate control of the water supplement operation.

[0138] Referring to Figures 5 to 7 The air conditioning system water supplement method provided by the embodiment of the present application is realized by using the air conditioning system provided by any of the technical solutions of the present application, and comprises the following steps:

[0139] Step S100: determining whether water supplement to the second inflow flow path 22 is needed. The determination of whether water supplement to the second inflow flow path 22 is needed can be realized in various ways. For example, the pressure in the second inflow flow path 22 can be detected by using the first pressure detection element 41 or the second pressure detection element 71 introduced in the first and second groups of embodiments above, and whether water supplement to the second inflow flow path 22 is needed can be determined according to the pressure. Water supplement to the second inflow flow path 22 can also be realized in a periodic manner, that is, water supplement to the second inflow flow path 22 is realized every time a set interval of time elapses, and a set amount of water is supplemented to the second inflow flow path 22.

[0140] In actual application, since the cooling water pump 15 needs to ensure water supply of the cooling water circulation loop and timely water supplement of the chilled water circulation loop, flow distribution may not be uniform. The second pressure detection element 71 is used to detect the pressure at the inlet of the chilled water pump 24 in real time, and when the second control device 73 detects that the pressure at the suction inlet of the chilled water pump 24 is less than a preset value, the water supplement instruction is turned on to supplement water to the second inflow flow path 22.

[0141] Step S200: if water supplement to the second inflow flow path 22 is needed, the water supplement flow path 3 is turned on. The water in the water supplement flow path 3 comes from the cooling tower 14 of the cooling water circulation loop 1, and as long as there is water in the water distribution plate 142 or the water collecting plate 143 of the cooling tower 14, water supplement to the second inflow flow path 22 can be realized.

[0142] According to the connection position of the water supplement flow path 3, the water in the water supplement flow path 3 may come from the water distribution plate 142 or the water collecting plate 143. If the water in the water supplement flow path 3 comes from the water distribution plate 142, the water amount of the water distribution plate 142 may be insufficient after the water amount of the water distribution plate 142 is supplemented to the water supplement flow path 3, and the air conditioning system water supplement method further comprises the following steps to realize water supplement to the water distribution plate 142, referring to Figure 6 .

[0143] Step S300, it is judged whether water needs to be supplied to the water distribution tray 142 of the cooling tower 14. When the water amount in the water distribution tray 142 is lower than the lower limit of the water amount set threshold of the water distribution tray 142, water needs to be supplied to the water distribution tray 142. Of course, in order to make the operation of the water distribution tray 142 more stable, the lower limit of the water amount set threshold of the water distribution tray 142 can be set to be relatively high, for example, the lower limit of the water amount set threshold of the water distribution tray 142 is 120% to 140% of the minimum working water level of the water distribution tray 142.

[0144] Step S400, if water needs to be supplied to the water distribution tray 142, the working frequency of the cooling water pump 15 of the cooling water circulation loop 1 is increased. After the working frequency of the cooling water pump 15 is increased, more water enters the water distribution tray 142 per unit time, which realizes the water supply operation of the water distribution tray 142. When the water amount in the water distribution tray 142 is lower than the upper limit of the water amount set threshold of the water distribution tray 142, water no longer needs to be supplied to the water distribution tray 142, and the working frequency of the cooling water pump 15 is adjusted to the normal working frequency.

[0145] Since water needs to be supplied to the second inflow flow path 22 of the chilled water circulation loop 2, the overall water amount in the cooling water circulation loop 1 is reduced, and since the working frequency of the cooling water pump 15 is increased, more water in the cooling water circulation loop 1 flows to the water distribution tray 142, so that the water amount in the water collecting tray 143 is reduced. Then the water supply to the water collecting tray 143 can be realized in the following way. In some embodiments, referring to Figure 7 , the air conditioning system water supply method further includes the following steps:

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

[0147] Step S600, if water needs to be supplied to the water collecting tray 143, water is supplied to the water collecting tray 143 through an external water source. When the water amount in the water collecting tray 143 is lower than the upper limit of the water amount set threshold of the water collecting tray 143, water no longer needs to be supplied to the water collecting tray 143, and the external water source is closed.

[0148] It should be noted that the above describes the process of replenishing water to the water distribution tray 142 and the water collecting tray 143 by taking the water replenishing flow path 3 communicating with the water distribution tray 142 as an example. In the embodiment in which the water replenishing flow path 3 communicates with the water collecting tray 143, since the amount of water in the cooling water circulation loop 1 is reduced, it is also necessary to determine whether water needs to be replenished to the water distribution tray 142 and the water collecting tray 143. The determination and adjustment are the same as those in the above-described embodiment, and the operation of replenishing water to the water distribution tray 142 and the water collecting tray 143 is also the same as that in the above-described embodiment, which will not be described herein again.

[0149] In addition, in each of the above-described embodiments, the cooling water circulation loop 1 can continue to operate or stop operating when water is replenished to the chilled water circulation loop 2.

[0150] The embodiment of the present application provides an air conditioning system water replenishing device, which comprises a memory and a processor coupled to the memory, and the processor is configured to execute the air conditioning system water replenishing method in any one of the above-described embodiments based on instructions stored in the memory.

[0151] The memory may, for example, include system memory, fixed non-volatile storage media, etc. The system memory may, for example, store an operating system, application programs, a Boot Loader, and other programs, etc.

[0152] Some embodiments of the present disclosure also provide a computer readable storage medium having a computer program stored thereon. When the program is executed by a processor, the air conditioning system water replenishing method in any one of the above-described embodiments is implemented.

[0153] The processor described herein can 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller, or state machine. A processor can 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 in conjunction with a DSP core, or any other such configuration.

[0154] The storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed 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 microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray® disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0155] Those skilled in the art will appreciate that the method embodiments of this disclosure can be readily implemented as method, system or computer program product. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the disclosure can take the form of a computer program product on one or more computer-usable non-transitory storage media (including but not limited to magnetic disks; optical disks; magnetic tape or other magnetic media; or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer).

[0156] The present disclosure is described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure One The means can be hardware means Figure One The means can be hardware means

[0157] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flow Figure One one or more flow or blocks and / or Figure One one or more blocks or blocks specified in the flow.

[0158] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions executed on the computer or other programmable apparatus provide steps for implementing the flow Figure One one or more flow or blocks and / or Figure One Figure One one or more blocks or blocks specified in the flow.

[0159] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0160] In the description of the present application, each technical feature can be combined with other technical features as far as possible.

[0161] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features, 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 application.

Claims

1. An air conditioning system, characterized by, The application relates to a cooling water circulation loop (1) comprising 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 in communication with the first heat exchanger (11); a chilled water circulation loop (2) comprising 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 in communication with 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 supplement flow path (3) arranged between the cooling tower (14) and the second inflow flow path (22); the water supplement flow path (3) comprises a conducting state and a disconnected state; when the water supplement flow path (3) is in the conducting state, the water supplement flow path (3) is configured to supplement water in the cooling tower (14) to the second heat exchanger (21). The cooling tower (14) comprises a tower body (141), a water distribution plate (142) arranged inside the tower body (141); one end of the first outflow flow path (13) is in communication with the water distribution plate (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 plate (143) also arranged inside the tower body (141), and the water distribution plate (142) is arranged above the water collecting plate (143); one end of the first inflow flow path (12) is in communication with the water collecting plate (143), and the other end of the first inflow flow path (12) is in communication with the first heat exchanger (11); wherein one end of the water supplement flow path (3) is in communication with the water distribution plate (142), and the other end of the water supplement flow path (3) is in communication with the second inflow flow path (22). The cooling tower (14) is arranged on the top of a building, and the position of the water distribution plate (142) is higher than that of the second inflow flow path (22). The application further comprises a first control system (4) comprising a first pressure detection element (41) installed on the second inflow flow path (22) and configured to detect the fluid pressure in the second inflow flow path (22); a first switch valve (42) arranged in the water supplement flow path (3); and a first control device (43) in signal connection with the first switch valve (42) and the first pressure detection element (41) and configured to control the conduction and disconnection of the first switch valve (42) according to the fluid pressure in the second inflow flow path (22) detected by the first pressure detection element (41).

2. The air conditioning system of claim 1, wherein, The cooling water circulation loop (1) further comprises a cooling water pump (15) arranged in the first inflow flow path (12); and the first control system (4) further comprises a second pressure detection element (44) installed on the first inflow flow path (12) and configured to detect the fluid pressure in the first inflow flow path (12). ​ ​ ​ ​ 3. The air conditioning system of claim 2, wherein, ​ 4. The air conditioning system according to claim 2 or 3, characterized by ​ ​ ​ ​ 5. The air conditioning system of claim 4, wherein, ​ ​ A first liquid level detection element (44) 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 in signal connection with 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 of claim 5, wherein, The first control system (4) further comprises: A second liquid level detection element (45) 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 in signal connection with the first control device (43); The air conditioning system further comprises: A second on-off valve (5) is in signal connection with the first control device (43); and A first water supply flow path (6) is in communication with the water collecting tray (143) to supply water to the water collecting tray (143); the second on-off valve (5) is installed in the first water supply flow path (6) to control the conduction and disconnection of the first water supply flow path (6); The first control device (43) is further configured to control the conduction and disconnection of the second on-off 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 of claim 2, wherein Further comprising: A first water supply pump is provided in the water supply flow path (3), and is configured to supply water in the water distribution tray (142) to the water supply flow path (3).

8. The air conditioning system of claim 1, wherein, The cooling water circulation loop (1) further comprises a cooling water pump (15) provided in the first inflow flow path (12); The chilled water circulation loop (2) further comprises a chilled water pump (24) provided in the second inflow flow path (22); One end of the water supply flow path (3) is in communication with the outlet of the cooling water pump (15), and the other end of the water supply flow path (3) is in communication with the inlet of the chilled water pump (24).

9. The air conditioning system of claim 8, wherein, The cooling tower (14) comprises: A tower body (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 tray (143) 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 in communication with the water collecting tray (143), and the other end of the first inflow flow path (12) is in communication with the first heat exchanger (11).

10. The air conditioning system of claim 9, wherein, Further comprising a second control system (7), the second control system (7) comprises: a second pressure detecting element (71) installed in the second inflow flow path (22) and configured to detect a fluid pressure in the second inflow flow path (22); a third switch valve (72) arranged in the water supplement flow path (3); and a second control device (73) in signal connection with the third switch valve (72) and the second pressure detecting element (71) and configured to control the third switch valve (72) to be turned on or turned off according to the fluid pressure in the second inflow flow path (22) detected by the second pressure detecting element (71). 11.The air conditioning system of claim 10, wherein, The second control system (7) further comprises: a first flow detecting element (74) installed in the first inflow flow path (12) and downstream of the cooling water pump (15); the first flow detecting element (74) is in signal connection with the second control device (73), and the second control device (73) is configured to control the working frequency of the cooling water pump (15) according to the flow detected by the first flow detecting element (74).

12. The air conditioning system of claim 11, wherein, The second control system (7) further comprises: a second flow detecting element (75) installed in the water supplement flow path (3) and upstream of the chilled water pump (24); the second flow detecting element (75) is in signal connection with the second control device (73), and the second control device (73) is configured to control the working frequency of the cooling water pump (15) according to the flow detected by the first flow detecting element (74) and the flow detected by the second flow detecting element (75) so as to maintain the water level in the water distribution disc (142).

13. The air conditioning system of claim 10, wherein, The second control system (7) further comprises a third liquid level detecting element (76) installed in the water collecting disc (143) and configured to detect the liquid level in the water collecting disc (143); the third liquid level detecting element (76) is in signal connection with the second control device (73); The air conditioning system further comprises: a fourth switch valve (8) in signal connection with the second control device (73); and a second supplement flow path (9) in communication with the water collecting disc (143) to supplement water to the water collecting disc (143); the fourth switch valve (8) is installed in the second supplement flow path (9) to control the second supplement flow path (9) to be turned on or turned off; wherein the second control device (73) is further configured to control the fourth switch valve (8) to be turned on or turned off according to the liquid level in the water collecting disc (143) detected by the third liquid level detecting element (76).

14. A method of water replenishment for an air conditioning system, characterized by, The air conditioning system of any one of claims 1-13 is implemented, and a water supplement method of the air conditioning system comprises the following steps: determining whether water needs to be supplemented to the second inflow flow path (22); if water needs to be supplemented to the second inflow flow path (22), turning on the water supplement flow path (3).

15. The method of claim 14, wherein, The method further comprises the following steps: determining whether water needs to be supplied to a water distribution tray (142) of the cooling tower (14); if water needs to be supplied to the water distribution tray (142), increasing the operating frequency of a cooling water pump (15) of the cooling water circulation loop (1).

16. The method of claim 14, wherein, Further comprising the steps of: determining whether water needs to be supplied to a water collection tray (143) of the cooling tower (14); if water needs to be supplied to the water collection tray (143), supplying water to the water collection tray (143) through an external water source.

17. A water supply device for an air conditioning system, characterized in that, comprising: a memory; and a processor coupled to the memory, the processor configured to execute a method for water supply of an air conditioning system as claimed in 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 stored thereon, which, when executed by a processor, implements a method for water supply of an air conditioning system as claimed in any one of claims 14 to 16.

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