Air conditioning system and multi-split air conditioner

Abstract

The invention relates to the technical field of air conditioners, particularly provides an air conditioning system and a multi-split air conditioner, and aims to solve the problem that the refrigeration performance of an existing multi-split air conditioner is degraded in a high-temperature environment. Therefore, the air conditioning system comprises an outdoor unit module, an indoor unit module and a cold accumulation module, the cold accumulation module comprises a heat exchanger and a cold accumulation assembly, the outdoor unit module and the heat exchanger can form a first unit, and the first unit can conduct outdoor refrigeration operation; and the outdoor unit module, the heat exchanger and the indoor unit module can form a second unit, the second unit can conduct indoor refrigeration operation, and when the second unit conducts indoor refrigeration operation, the cold storage assembly can provide cold for a refrigerant in the second unit. The stored cold energy is released through the cold storage assembly to be supplemented into the second unit, the refrigerating capacity of the second unit can be enhanced, and the refrigerating efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular provides an air conditioning system and a multi-split air conditioner. Background Art

[0002] Currently, multi-split air conditioning systems are widely used in commercial and residential buildings due to their energy efficiency, flexibility, and ease of installation. However, in high-temperature environments (especially extreme operating conditions where outdoor temperatures exceed 35°C), the cooling performance of multi-split systems significantly degrades. The main reasons are: as the ambient temperature rises, the evaporating and condensing pressures of the outdoor unit heat exchanger rise, causing a sharp increase in compressor power consumption. At the same time, the heat transfer efficiency of the heat exchanger surface deteriorates due to the reduction in the air-side convective heat transfer coefficient, resulting in a significant decrease in the system's energy efficiency ratio (EER) and even protective shutdown.

[0003] To alleviate the problem of high-temperature cooling attenuation, existing technologies typically employ auxiliary cooling solutions by directly spraying water or misting it onto the outdoor heat exchanger. While this solution can reduce the heat exchanger's surface temperature through the absorption of heat by water evaporation, it suffers from three major drawbacks: First, the spraying efficiency is significantly affected by ambient humidity. In high-temperature and high-humidity environments, the evaporation rate slows, and the cooling effect decreases dramatically. Second, continuous spraying wastes water resources, and the direct discharge of unrecycled water does not meet water conservation and environmental protection requirements. Third, mineral deposits and chemical additives (such as disinfectants) in the water, when in long-term contact with the metal fins, accelerate corrosion of the heat exchanger and shorten the equipment life.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem of attenuation of cooling performance of existing multi-split air conditioners in high temperature environments.

[0006] In a first aspect, the present invention provides an air conditioning system, comprising an outdoor unit module, an indoor unit module, and a cold storage module, wherein the cold storage module is detachably connected between the outdoor unit module and the indoor unit module, and the cold storage module comprises a heat exchanger and a cold storage assembly.

[0007] The outdoor unit module and the heat exchanger can form a first unit, the first unit can perform outdoor cooling operation, and the cold energy generated by the first unit during cooling operation can be stored in the cold storage component.

[0008] The outdoor unit module, the heat exchanger and the indoor unit module can form a second unit, and the second unit can perform indoor cooling operation. When the second unit performs indoor cooling operation, the cold storage component can provide cold energy to the refrigerant in the second unit.

[0009] In the preferred technical solution of the above-mentioned air-conditioning system, the cold storage component includes a box body and a water pump, the box body is provided with a partition, the partition divides the box body into a first chamber and a second chamber distributed up and down, the heat exchanger is installed in the first chamber, and a nozzle is installed in the first chamber, and a water storage tank is installed in the second chamber, and a reflux port is provided on the partition, the water pump can draw water from the water storage tank and spray it onto the heat exchanger through the nozzle to perform heat exchange with the heat exchanger, and the water that has undergone heat exchange can flow back to the water storage tank through the reflux port.

[0010] In a preferred technical solution of the above air-conditioning system, the cold storage assembly further includes a fan, and a vent is provided on the side wall of the first chamber. The fan can discharge the water vapor evaporated by the heat exchanger through the vent.

[0011] In the preferred technical solution of the above air-conditioning system, the inner wall of the water storage tank is provided with a heat-insulating layer, and / or

[0012] The water storage tank is connected to a water inlet pipe, and an external water source can transport cold water to the water storage tank through the water inlet pipe.

[0013] In the preferred technical solution of the above-mentioned air-conditioning system, the first end of the heat exchanger is connected to the air pipe of the outdoor unit module and the first interface of the indoor unit module through a first connecting pipe and a second connecting pipe, and the second interface of the indoor unit module is connected to the air pipe of the outdoor unit module. The second end of the heat exchanger is connected to the liquid pipe of the outdoor unit module through a third connecting pipe, and a first solenoid valve and a second solenoid valve are respectively provided on the first connecting pipe and the second connecting pipe.

[0014] In the preferred technical solution of the above-mentioned air-conditioning system, the outdoor unit module includes a compressor, a four-way valve, an expansion valve, an outdoor heat exchanger, an oil separator and a gas-liquid separator. The exhaust port of the compressor is connected to the d port of the four-way valve after passing through the oil separator, and the air inlet of the compressor is connected to the s port of the four-way valve after passing through the gas-liquid separator. The air pipe of the outdoor unit module and the outdoor heat exchanger are respectively connected to the e port and the c port of the four-way valve, and the expansion valve is connected between the outdoor heat exchanger and the heat exchanger.

[0015] In a preferred technical solution of the above air-conditioning system, the indoor unit module includes an indoor heat exchanger, and both sides of the indoor heat exchanger are respectively connected to the outlet of the heat exchanger and the air pipe of the outdoor unit module.

[0016] In a preferred technical solution of the above air-conditioning system, a plurality of indoor unit modules are provided, and the plurality of indoor unit modules are connected in parallel and then connected to the heat exchanger.

[0017] In the preferred technical solution of the above-mentioned air-conditioning system, multiple cold storage modules and multiple indoor unit modules are provided, the heat exchanger of each cold storage module is connected to at least one indoor unit module, and multiple heat exchangers are connected in parallel to the outdoor unit module.

[0018] In a second aspect, the present invention further provides a multi-split air conditioner, which includes any of the air conditioning systems described above.

[0019] It can be understood by those skilled in the art that the technical solution of the present invention provides an air-conditioning system, comprising an outdoor unit module, an indoor unit module and a cold storage module, the cold storage module being detachably connected between the outdoor unit module and the indoor unit module, the cold storage module comprising a heat exchanger and a cold storage assembly, the outdoor unit module and the heat exchanger being able to form a first unit, the first unit being able to perform outdoor cooling operation, and the cold energy generated during the cooling operation of the first unit being able to be stored in the cold storage assembly, the outdoor unit module, the heat exchanger and the indoor unit module being able to form a second unit, the second unit being able to perform indoor cooling operation, and when the second unit is performing indoor cooling operation, the cold storage assembly being able to provide cold energy to the refrigerant in the second unit. By adopting the above technical solution, the present invention can solve the problem of the cooling performance degradation of existing multi-split air conditioners in high-temperature environments. Specifically, when the outdoor ambient temperature is too high, resulting in insufficient cooling capacity of the outdoor unit module, the cold storage component can release the stored cold energy and supplement it to the second unit. This can enhance the cooling capacity of the second unit, allowing the indoor temperature to reach the set value more quickly, or reduce the temperature more in the same amount of time, thereby improving cooling efficiency and meeting the user's demand for rapid indoor cooling. In addition, by setting the cold storage module as a detachable connection method, the air conditioning system can be flexibly configured according to different usage scenarios and needs, conveniently adjusting the structure of the air conditioning system, and improving the adaptability of the system.

[0020] Furthermore, the cold storage assembly of the present invention includes a housing and a water pump. The housing has a partition that divides the housing into a first chamber and a second chamber disposed vertically. A heat exchanger is installed in the first chamber, and a nozzle is installed in the first chamber. A water tank is installed in the second chamber. A return port is provided on the partition. The water pump draws water from the water tank and sprays it through the nozzle onto the heat exchanger for heat exchange. The heat-exchanged water then flows back into the water tank through the return port. By using a spraying method to ensure full contact between the water and the heat exchanger, the contact area between the water and the heat exchanger is greatly increased, thereby improving heat exchange efficiency.

[0021] Furthermore, the cold storage assembly of the present invention includes a fan. Ventilation holes are provided on the sidewalls of the first chamber, through which the fan can expel water vapor evaporated by the heat exchanger. This arrangement helps lower the temperature of the heat exchanger and indirectly cools the refrigerant, further enhancing the cooling effect.

[0022] Furthermore, the present invention provides a plurality of indoor unit modules, which are connected in parallel to the heat exchanger. This arrangement enables the air conditioning system to provide efficient cooling effects for multiple different areas simultaneously.

[0023] Furthermore, the present invention employs multiple cold storage modules and indoor unit modules. Each cold storage module's heat exchanger is connected to at least one indoor unit module, and multiple heat exchangers are connected in parallel to the outdoor unit module. This arrangement enables precise cooling for different areas and personalized cooling services. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the air conditioning system of the present invention. Figure 1 ;

[0026] Figure 2 It is a structural schematic diagram of the cold storage module of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the cold storage assembly of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the outdoor unit module of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the air conditioning system of the present invention. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the structure of the air conditioning system of the present invention. Figure 3 .

[0031] List of reference numerals:

[0032] 1. Outdoor unit module; 11. Compressor; 12. Four-way valve; 13. Expansion valve; 14. Outdoor heat exchanger; 15. Oil separator; 16. Gas-liquid separator;

[0033] 2. Indoor unit module; 21. Indoor heat exchanger;

[0034] 3. Cold storage module; 31. Heat exchanger; 32. Cold storage assembly; 321. Box; 322. Water pump; 323. Partition; 324. Nozzle; 325. Water storage tank; 326. Return port; 327. Fan; 328. Ventilation port; 329. Water inlet pipe; 33. First connecting pipe; 331. First solenoid valve; 34. Second connecting pipe; 341. Second solenoid valve; 35. Third connecting pipe. DETAILED DESCRIPTION

[0035] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are intended solely to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are described in conjunction with a multi-split air conditioner, the air conditioning system provided by the present invention is equally applicable to other products that require solutions to address the issue of cooling performance degradation in high-temperature environments.

[0036] It should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] Based on the problem of cooling performance degradation of existing multi-split air conditioners in high-temperature environments pointed out in the background art, the present invention provides an air conditioning system that aims to effectively solve the problem of cooling performance degradation of multi-split air conditioners in high-temperature environments by providing additional cooling capacity during cooling by arranging a cold storage component between the indoor and outdoor units.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides an air-conditioning system, including an outdoor unit module 1, an indoor unit module 2 and a cold storage module 3, the cold storage module 3 is detachably connected between the outdoor unit module 1 and the indoor unit module 2, the cold storage module 3 includes a heat exchanger 31 and a cold storage component 32, the outdoor unit module 1 and the heat exchanger 31 can form a first unit, the first unit can perform outdoor cooling operation, and the cold energy generated by the first unit during the cooling operation can be stored in the cold storage component 32, the outdoor unit module 1, the heat exchanger 31 and the indoor unit module 2 can form a second unit, the second unit can perform indoor cooling operation, and when the second unit performs indoor cooling operation, the cold storage component 32 can provide cold energy to the refrigerant in the second unit.

[0039] In high-temperature environments, the cooling performance of traditional multi-split air conditioners is severely affected, resulting in a reduced cooling effect. However, the air conditioning system of the present invention, which stores cold energy in a cold storage component 32, can release the stored cold energy to supplement the cooling capacity of the second unit when the outdoor ambient temperature is too high, resulting in insufficient cooling capacity in the outdoor module 1. This can enhance the cooling capacity of the second unit, allowing the indoor temperature to reach the set value more quickly, or lower the temperature more within the same timeframe, thereby improving cooling efficiency and meeting users' needs for rapid indoor cooling. This effectively solves the problem of cooling performance degradation in existing multi-split air conditioners in high-temperature environments.

[0040] Furthermore, by storing cold energy in the cold storage assembly 32 when the first unit is operating for outdoor cooling, and releasing the cold energy from the cold storage assembly 32 to assist in cooling when the second unit is operating for indoor cooling, energy consumption by the outdoor unit 1 during indoor cooling can be reduced. For example, by operating the first unit to store cold energy, during daytime hours when electricity prices are higher, the stored cold energy can be used to assist in indoor cooling, thereby reducing overall operating costs and achieving energy savings.

[0041] Furthermore, the removable design of cold storage module 3 allows the air conditioning system to be flexibly configured according to different usage scenarios and needs. For example, in locations where cooling requirements fluctuate periodically, cold storage module 3 can be installed or removed to adapt to different cooling needs. This design facilitates the adjustment of the air conditioning system structure and improves the system's adaptability. Furthermore, the removable design allows users to add cold storage module 3 to the existing system at any time according to actual needs, without requiring large-scale modifications to the entire air conditioning system. This saves costs and improves the system's scalability and practicality.

[0042] Preferably, if Figure 3 As shown, the cold storage component 32 includes a box body 321 and a water pump 322. The box body 321 has a partition 323. The partition 323 divides the box body 321 into a first chamber and a second chamber distributed up and down. The heat exchanger 31 is installed in the first chamber, and a nozzle 324 is installed in the first chamber. A water tank 325 is installed in the second chamber. A return port 326 is provided on the partition 323. The water pump 322 can extract water from the water tank 325 and spray it onto the heat exchanger 31 through the nozzle 324 to exchange heat with the heat exchanger 31. The water that has undergone heat exchange can flow back to the water tank 325 through the return port 326.

[0043] Heat exchanger 31 is mounted in the first chamber, which is also equipped with a spray head 324. Spray head 324 sprays water onto heat exchanger 31, exchanging heat with the water. When refrigerant flows through heat exchanger 31, the temperature difference between the refrigerant and the spraying water creates heat transfer.

[0044] A water tank 325 is installed in the second chamber, with a return port 326 defined in the partition 323. A water pump 322 draws water from the tank and sprays it onto the heat exchanger 31 through a nozzle 324. After heat exchange, the water's temperature changes (either absorbing or releasing heat) and then flows back into the tank through the return port 326 in the partition 323, forming a water circulation system.

[0045] The present invention uses a spraying method to ensure full contact between water and heat exchanger 31, significantly increasing the contact area between the water and heat exchanger 31 and improving heat exchange efficiency. Compared to traditional heat exchange methods, spraying heat exchange can more quickly and efficiently transfer the cold energy from heat exchanger 31 to the water, allowing the water to absorb or release cold energy more quickly, thereby improving the cold storage and cooling performance of the entire cold storage assembly 32.

[0046] Furthermore, components such as the heat exchanger 31, nozzle 324, and water storage tank 325 are integrated within the housing 321 and separated by partitions 323. This makes the entire cold storage assembly 32 compact, occupies a small footprint, and is easy to install and maintain. This structure also facilitates the integrated design of the system and facilitates connection with the outdoor unit module 1 and indoor unit module 2.

[0047] Furthermore, water is pumped from the water storage tank 325 by the water pump 322 for spraying, and the water after heat exchange flows back to the water storage tank 325 through the return port 326, thus realizing water recycling. This not only saves water resources and reduces operating costs, but also reduces wastewater discharge, meeting environmental protection requirements.

[0048] Preferably, if Figure 3 As shown, the cold storage assembly 32 further includes a fan 327 , and a vent 328 is provided on the side wall of the first chamber. The fan 327 can discharge the water vapor evaporated by the heat exchanger 31 through the vent 328 .

[0049] The water is sprayed through nozzle 324 to ensure full contact with the heat exchanger 31. During this process, the cold energy in the water is transferred to the refrigerant in the second unit, lowering the refrigerant temperature and thereby assisting in cooling the room. At this point, the water temperature rises after exchanging heat with the heat exchanger 31. When the water temperature rises to a certain level, fan 327 is turned on, and the water sprayed from nozzle 324 is sprayed onto the heat exchanger 31. Some of the water evaporates into water vapor. This evaporation process is an endothermic process, with the water vapor absorbing heat from the heat exchanger 31. This process not only helps lower the temperature of the heat exchanger 31 but also indirectly cools the refrigerant, further enhancing the cooling effect. Under the action of fan 327, the heated water vapor is promptly discharged outside the first chamber through vents 328 on the sidewall of the first chamber. The unevaporated water flows back into the water storage tank 325 through the return port 326 on the partition 323 for subsequent recycling.

[0050] On the basis of transferring cold energy to the refrigerant by spraying water, the present invention utilizes the principle of heat absorption due to evaporation of water to further absorb the heat of the heat exchanger 31, thereby indirectly cooling the refrigerant, thereby enhancing the cooling effect of the entire air-conditioning system during indoor cooling operation, being able to reduce the indoor temperature more quickly, and meeting the user's demand for indoor cooling.

[0051] Preferably, the inner wall of the water storage tank 325 is provided with a heat-insulating layer (not shown in the figure).

[0052] The insulation layer on the inner wall of the water tank 325 effectively prevents heat from the water in the water tank 325 from being lost to the outside world, as well as heat from the outside world from being transferred into the water tank 325. This maintains the temperature of the water in the water tank 325 stable and reduces cooling loss. This helps ensure that the water tank 325 can continuously provide sufficient cooling capacity for the air conditioning system during operation, thereby improving the cooling efficiency and performance of the cooling assembly 32.

[0053] For example, the thermal insulation layer may be made of polyurethane foam plastic, polystyrene foam board or the like. The present invention does not limit the specific material of the thermal insulation layer.

[0054] Preferably, if Figure 3 As shown, the water tank 325 is connected to a water inlet pipe 329 , and an external water source can deliver cold water to the water tank 325 through the water inlet pipe 329 .

[0055] By connecting to an external water source via the water inlet pipe 329, cold water can be promptly replenished into the water storage tank 325. When the system is running for a long time or the external ambient temperature is high, resulting in reduced evaporation or increased temperature of the water in the water storage tank 325, the replenishment of external cold water can maintain the water temperature in the water storage tank 325 within an appropriate range, ensuring that the cold storage assembly 32 can stably provide cooling capacity for the air conditioning system, avoiding the impact of excessive water temperature or water shortage on the cooling effect of the entire air conditioning system, and ensuring the stability and reliability of the system operation.

[0056] Preferably, if Figure 1 and Figure 2 As shown, the first end of the heat exchanger 31 is connected to the air pipe of the outdoor unit module 1 and the first interface of the indoor unit module 2 through the first connecting pipe 33 and the second connecting pipe 34 respectively, and the second interface of the indoor unit module 2 is connected to the air pipe of the outdoor unit module 1, and the second end of the heat exchanger 31 is connected to the liquid pipe of the outdoor unit module 1 through the third connecting pipe 35, and the first solenoid valve 331 and the second solenoid valve 341 are respectively provided on the first connecting pipe 33 and the second connecting pipe 34.

[0057] By providing the first solenoid valve 331 and the second solenoid valve 341 , the flow direction of the refrigerant can be flexibly controlled according to different operating modes and requirements of the air-conditioning system.

[0058] For example, in the cold storage mode (the first unit performs outdoor cooling operation), the first solenoid valve 331 can be opened and the second solenoid valve 341 can be closed, so that the refrigerant flows from the gas pipe of the outdoor unit module 1 to the heat exchanger 31, and after heat exchange through the heat exchanger 31, the cold energy is stored in the cold storage component 32 and then flows back to the outdoor unit module 1 through the liquid pipe of the outdoor unit module 1.

[0059] In the indoor cooling mode (the second unit performs indoor cooling operation), the first solenoid valve 331 can be closed and the second solenoid valve 341 can be opened to allow the refrigerant to flow from the gas pipe of the outdoor unit module 1 to the heat exchanger 31, and then pass through the heat exchanger 31 to perform heat exchange and absorb the cold energy in the cold storage component 32 before entering the indoor unit module 2 to cool the room, and then flow back to the outdoor unit module 1 through the liquid pipe of the outdoor unit module 1.

[0060] Preferably, if Figure 4 As shown, the outdoor unit module 1 includes a compressor 11, a four-way valve 12, an expansion valve 13, an outdoor heat exchanger 14, an oil separator 15 and a gas-liquid separator 16. The exhaust port of the compressor 11 is connected to the d port of the four-way valve 12 after passing through the oil separator 15, and the air inlet of the compressor 11 is connected to the s port of the four-way valve 12 after passing through the gas-liquid separator 16. The air pipe of the outdoor unit module 1 and the outdoor heat exchanger 14 are respectively connected to the e port and the c port of the four-way valve 12, and the expansion valve 13 is connected between the outdoor heat exchanger 14 and the heat exchanger 31.

[0061] The four-way valve 12 is a control valve with four oil ports. By changing the position of the valve core, the flow direction of the refrigerant can be changed, thereby switching the cooling and heating modes of the air-conditioning system to meet the indoor temperature requirements of different seasons and users.

[0062] The use of the separator and the gas-liquid separator 16 provides dual protection for the compressor 11. The oil separator 15 separates the lubricating oil from the refrigerant, ensuring that the compressor 11 is well lubricated, reducing wear and extending the service life of the compressor 11. The gas-liquid separator 16 prevents the compressor 11 from inhaling liquid refrigerant, avoiding the occurrence of liquid hammer, ensuring the normal operation of the compressor 11, reducing the failure rate of the compressor 11, and improving the reliability of the entire air conditioning system.

[0063] Preferably, if Figure 1 As shown, the indoor unit module 2 includes an indoor heat exchanger 21 , and both sides of the indoor heat exchanger 21 are respectively connected to the outlet of the heat exchanger 31 and the air pipe of the outdoor unit module 1 .

[0064] In cooling mode, the low-temperature, low-pressure refrigerant flowing out of the outlet of heat exchanger 31 enters indoor heat exchanger 21. In indoor heat exchanger 21, the refrigerant absorbs heat from the indoor air, lowering the indoor air temperature and achieving cooling. Simultaneously, the refrigerant absorbs heat and evaporates into a gaseous state. The gas pipe then returns to the outdoor unit through outdoor unit module 1 for subsequent compression and other cyclic processes.

[0065] Preferably, if Figure 5 As shown, a plurality of indoor unit modules 2 are provided, and the plurality of indoor unit modules 2 are connected in parallel and then connected to the heat exchanger 31 .

[0066] In actual applications, different rooms or areas may have different cooling requirements. For example, south-facing rooms receive long periods of sunlight in the summer and may require a stronger cooling effect. Therefore, indoor unit modules 2 can be installed in these rooms and connected in parallel to the heat exchanger 31. This can increase the cooling capacity of the indoor unit modules 2 in each room and improve the comfort level in the room.

[0067] Furthermore, because multiple indoor unit modules 2 are connected in parallel, a failure in one indoor unit module 2 will not affect the normal operation of the other indoor unit modules 2. The other indoor unit modules 2 can continue to provide cooling or heating services to the user, ensuring the stability of the overall function of the air-conditioning system, reducing the risk of the entire system malfunctioning due to a failure of a single indoor unit module 2, and improving the reliability and maintainability of the system.

[0068] Furthermore, as the building scale expands or usage needs change, if additional indoor units are needed, parallel connection allows for convenient expansion. Simply connect the new indoor unit module 2 in parallel to the existing system and connect it to the heat exchanger 31, eliminating the need for large-scale modifications to the entire system and reducing the cost and difficulty of system expansion.

[0069] Preferably, if Figure 6 As shown, multiple cold storage modules 3 and indoor unit modules 2 are provided, and the heat exchanger 31 of each cold storage module 3 is connected to at least one indoor unit module 2, and multiple heat exchangers 31 are connected in parallel to the outdoor unit module 1.

[0070] Different areas or rooms have different cooling requirements due to factors such as area, usage, and occupancy density. The configuration of multiple cold storage modules 3 and indoor unit modules 2, and the connection of the heat exchanger 31 of each cold storage module 3 to at least one indoor unit module 2, enable precise cooling of different areas. For example, in a large commercial building, shops or office areas on different floors may have different cooling time and cooling capacity requirements. By independently controlling the operation of each cold storage module 3 and indoor unit module 2, personalized cooling services can be achieved.

[0071] In addition, when there is a temporary high-load cooling demand in certain areas, the cold storage module 3 connected thereto can respond quickly and provide additional cooling capacity without affecting the normal cooling of other areas.

[0072] In addition, the present invention also provides a multi-split air conditioner, which includes the above-mentioned air conditioning system.

[0073] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. An air conditioning system, characterized in that: The invention comprises an outdoor unit module (1), an indoor unit module (2) and a cold storage module (3), wherein the cold storage module (3) is detachably connected between the outdoor unit module (1) and the indoor unit module (2), and the cold storage module (3) comprises a heat exchanger (31) and a cold storage component (32). The outdoor unit module (1) and the heat exchanger (31) can form a first unit, the first unit can perform outdoor cooling operation, and the cold energy generated by the first unit during cooling operation can be stored in the cold storage component (32). The outdoor unit module (1), the heat exchanger (31) and the indoor unit module (2) can form a second unit, and the second unit can perform indoor cooling operation. When the second unit performs indoor cooling operation, the cold storage component (32) can provide cold energy to the refrigerant in the second unit.

2. The air conditioning system according to claim 1, characterized in that The cold storage component (32) includes a box (321) and a water pump (322). The box (321) is provided with a partition (323). The partition (323) divides the box (321) into a first chamber and a second chamber distributed up and down. The heat exchanger (31) is installed in the first chamber, and a nozzle (324) is installed in the first chamber. A water storage tank (325) is installed in the second chamber. A return port (326) is provided on the partition (323). The water pump (322) can extract water from the water storage tank (325) and spray it onto the heat exchanger (31) through the nozzle (324) to perform heat exchange with the heat exchanger (31). The water after heat exchange can flow back to the water storage tank (325) through the return port (326).

3. The air conditioning system according to claim 2, characterized in that The cold storage component (32) further includes a fan (327). A vent (328) is provided on the side wall of the first chamber. The fan (327) can discharge water vapor evaporated by the heat exchanger (31) through the vent (328).

4. The air conditioning system according to claim 2, characterized in that The inner wall of the water storage tank (325) is provided with a heat-insulating layer, and / or The water storage tank (325) is connected to a water inlet pipe (329), and an external water source can transport cold water to the water storage tank (325) through the water inlet pipe (329).

5. The air conditioning system according to claim 1, characterized in that The first end of the heat exchanger (31) is connected to the gas pipe of the outdoor unit module (1) and the first interface of the indoor unit module (2) through a first connecting pipe (33) and a second connecting pipe (34), and the second interface of the indoor unit module (2) is connected to the gas pipe of the outdoor unit module (1). The second end of the heat exchanger (31) is connected to the liquid pipe of the outdoor unit module (1) through a third connecting pipe (35), and a first solenoid valve (331) and a second solenoid valve (341) are respectively provided on the first connecting pipe (33) and the second connecting pipe (34).

6. The air conditioning system according to claim 1, characterized in that The outdoor unit module (1) comprises a compressor (11), a four-way valve (12), an expansion valve (13), an outdoor heat exchanger (14), an oil separator (15) and a gas-liquid separator (16); the exhaust port of the compressor (11) is connected to the d port of the four-way valve (12) after passing through the oil separator (15); the air inlet of the compressor (11) is connected to the s port of the four-way valve (12) after passing through the gas-liquid separator (16); the air pipe of the outdoor unit module (1) and the outdoor heat exchanger (14) are respectively connected to the e port and the c port of the four-way valve (12); the expansion valve (13) is connected between the outdoor heat exchanger (14) and the heat exchanger (31).

7. The air conditioning system according to claim 1, characterized in that The indoor unit module (2) includes an indoor heat exchanger (21), and both sides of the indoor heat exchanger (21) are respectively connected to the outlet of the heat exchanger (31) and the air pipe of the outdoor unit module (1).

8. The air conditioning system according to any one of claims 1 to 7, characterized in that: A plurality of the indoor unit modules (2) are provided, and the plurality of indoor unit modules (2) are connected in parallel and then connected to the heat exchanger (31).

9. The air conditioning system according to any one of claims 1 to 7, characterized in that: The cold storage module (3) and the indoor unit module (2) are both provided with a plurality, the heat exchanger (31) of each cold storage module (3) is connected to at least one indoor unit module (2), and the plurality of heat exchangers (31) are connected in parallel to the outdoor unit module (1).

10. A multi-split air conditioner, characterized in that: An air conditioning system comprising the air conditioning system according to any one of claims 1 to 9.

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