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 problems that an existing multi-split air conditioning system is large in refrigeration attenuation in a high-temperature environment and large in indoor temperature fluctuation caused by indoor heat absorption during heating and defrosting. Therefore, the air conditioning system comprises an outdoor unit module, an energy storage module and a first indoor unit module, the energy storage module and the outdoor unit module can form a first unit, heat or cold generated during operation of the first unit can be stored in the energy storage module, and the outdoor unit module, the energy storage module and the first indoor unit module can form a second unit. When the second unit performs indoor refrigeration operation, cold energy in the energy storage module can be released to a refrigerant in the second unit, and when the second unit performs indoor heating operation, waste heat generated by the second unit can be stored in the energy storage module. Therefore, the refrigerating capacity of the air conditioning system in the high-temperature environment can be improved, and fluctuation of the indoor temperature during defrosting can be reduced.

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] In the field of air-conditioning technology, multi-split air-conditioning systems have been widely used in various scenarios such as commercial buildings, office spaces and residences because they can connect one outdoor unit to multiple indoor units and have many advantages such as flexible installation and easy control.

[0003] However, current VRF systems have exposed some pressing operational issues. In high-temperature environments, the cooling performance of VRF systems degrades significantly. This is because high temperatures increase the ambient temperature around the outdoor unit, increasing the compressor's workload and reducing the condenser's heat dissipation efficiency. This prevents the refrigerant from dissipating sufficient heat, thus affecting the overall refrigeration cycle. This makes it difficult to achieve the desired indoor temperature and reduces user comfort.

[0004] In heating mode, a multi-split air conditioning system absorbs heat from the room during the defrosting process. When the outdoor unit is severely frosted, the system switches to defrost mode, where the indoor unit acts as an evaporator, absorbing heat from the indoor air to melt the frost on the outdoor unit. This process can cause significant fluctuations in indoor temperature, resulting in noticeable drops in temperature, affecting indoor thermal comfort.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above technical problems, namely, to solve the problem that the existing multi-split air-conditioning system has large cooling attenuation in a high temperature environment and absorbs heat from the room during heating and defrosting, resulting in large indoor temperature fluctuations.

[0007] In a first aspect, the present invention provides an air conditioning system, comprising an outdoor unit module, an energy storage module, and a first indoor unit module, wherein the energy storage module is detachably connected between the outdoor unit module and the first indoor unit module.

[0008] The energy storage module can form a first unit with the outdoor unit module. The first unit can enter the outdoor heating operation and / or outdoor cooling operation, and the heat or cold generated by the operation of the first unit can be stored in the energy storage module.

[0009] The outdoor unit module, the energy storage module and the first indoor unit module can form a second unit group, the second unit group can perform indoor heating operation and / or indoor refrigeration operation, and when the second unit group performs indoor refrigeration operation, cold energy in the energy storage module can be released to refrigerant in the second unit group, and when the second unit group performs indoor heating operation, waste heat generated by the second unit group can be stored in the energy storage module.

[0010] In the preferred technical solution of the air conditioning system, the first indoor unit module is provided in plurality, and the plurality of first indoor unit modules are connected in parallel and connected with the energy storage module.

[0011] In the preferred technical solution of the air conditioning system, the energy storage module and the first indoor unit module are provided in plurality, each of the energy storage modules is connected with at least one of the first indoor unit modules, and the plurality of energy storage modules are connected in parallel and connected with the outdoor unit module.

[0012] In the preferred technical solution of the air conditioning system, the energy storage module comprises a heat exchanger and an energy storage body, the heat exchanger is in heat exchangeable connection with the energy storage body, a first end of the heat exchanger is connected with a gas pipe of the outdoor unit module and a first interface of the first indoor unit module through a first communication pipe and a second communication pipe respectively, a second interface of the first indoor unit module is connected with the gas pipe of the outdoor unit module, a second end of the heat exchanger is connected with a liquid pipe of the outdoor unit module through a third communication pipe, and a first electromagnetic valve and a second electromagnetic valve are arranged on the first communication pipe and the second communication pipe respectively.

[0013] In the preferred technical solution of the air conditioning system, the energy storage module further comprises a fourth communication pipe, the fourth communication pipe is connected between the liquid pipe of the outdoor unit module and the first interface of the first indoor unit module, and a third electromagnetic valve is arranged on the fourth communication pipe,

[0014] When the first electromagnetic valve and the second electromagnetic valve are closed and the third electromagnetic valve is opened, the first indoor unit module and the outdoor unit module can form a third unit group, and the third unit group can perform indoor heating operation and / or indoor refrigeration operation.

[0015] In the preferred technical solution of the air conditioning system, a first expansion valve is arranged on a pipeline close to the second end of the heat exchanger, and / or

[0016] A one-way valve is arranged on the fourth communication pipe, an inlet of the one-way valve is in communication with the first interface of the first indoor unit, and an outlet of the one-way valve is in communication with the liquid pipe of the outdoor unit module.

[0017] In the preferred technical scheme of the air conditioning system, the outdoor unit module comprises a compressor, a four-way valve, a second expansion valve, an outdoor heat exchanger, an oil separator and a gas-liquid separator, an exhaust port of the compressor is connected with a d port of the four-way valve after passing through the oil separator, an air inlet of the compressor is connected with an s port of the four-way valve after passing through the gas-liquid separator, a gas pipe of the outdoor unit module and the outdoor heat exchanger are respectively connected with an e port and a c port of the four-way valve, and the second expansion valve is connected between the outdoor heat exchanger and the energy storage module.

[0018] In the preferred technical scheme of the air conditioning system, the air conditioning system further comprises a plurality of second indoor unit modules, the plurality of second indoor unit modules are connected with the energy storage module in parallel and then connected with the outdoor unit module to form a fourth unit, and the fourth unit can perform indoor heating operation and / or indoor refrigeration operation.

[0019] In the preferred technical scheme of the air conditioning system, the first indoor unit module comprises a first indoor heat exchanger, two sides of the first indoor heat exchanger are respectively connected with an outlet of the energy storage module and a gas pipe of the outdoor unit module, and / or

[0020] The second indoor unit module comprises a second indoor heat exchanger, and two sides of the second indoor heat exchanger are respectively connected with the gas pipe of the outdoor unit module and a liquid pipe of the outdoor unit module.

[0021] In a second aspect, the present application further provides a multi-connected air conditioner, which comprises the air conditioning system according to any one of the above.

[0022] Those skilled in the art can understand that the technical scheme of the present application provides an air conditioning system, which comprises an outdoor unit module, an energy storage module and a first indoor unit module, the energy storage module is detachably connected between the outdoor unit module and the first indoor unit module, the energy storage module can form a first unit with the outdoor unit module, the first unit can perform outdoor heating operation and / or outdoor refrigeration operation, and the heat or cold produced by the first unit during operation can be stored in the energy storage module, the outdoor unit module, the energy storage module and the first indoor unit module can form a second unit, the second unit can perform indoor heating operation and / or indoor refrigeration operation, and when the second unit performs indoor refrigeration operation, the cold in the energy storage module can be released to the refrigerant in the second unit, and when the second unit performs indoor heating operation, the waste heat produced by the second unit can be stored in the energy storage module. In the case of using the above technical scheme, the present application can improve the refrigeration capacity of the air conditioning system in a high-temperature environment and reduce the indoor temperature fluctuation when defrosting. Specifically, when the second unit performs indoor refrigeration, the cold in the energy storage module is released to the refrigerant, thereby improving the supercooling degree of the refrigerant in the second unit, effectively enhancing the refrigeration capacity of the second unit in a high-temperature environment, solving the problem of large refrigeration attenuation of the traditional air conditioning system in a high-temperature environment, and when the outdoor unit module needs to be defrosted, the energy storage module can provide the required heat, avoiding heat absorption from the indoor, thereby effectively reducing the indoor temperature fluctuation and improving the user's experience. In addition, the energy storage module is set to be detachable, so that the air conditioning system can be flexibly configured according to different use environments and requirements, and users can increase the range extension module at any time according to actual needs in the existing system, without the need for large-scale modification of the entire air conditioning system, which not only saves cost, but also improves the expansibility and practicality of the system.

[0023] Further, the first indoor unit module of the present application is provided with a plurality of first indoor unit modules, which are connected with the energy storage module in parallel after being connected in parallel. Through this setting, the air conditioning system can provide refrigeration or heating services for multiple different areas at the same time.

[0024] Further, the energy storage module and the first indoor unit module of the present application are each provided with a plurality of modules, each energy storage module is connected with at least one first indoor unit module, and a plurality of energy storage modules are connected with the outdoor unit module in parallel. Through this setting, the air conditioning system can more flexibly adapt to the use requirements of different areas.

[0025] Further, the energy storage module of the present application comprises a heat exchanger and an energy storage body, the heat exchanger is in heat exchange connection with the energy storage body, the first end of the heat exchanger is connected with the gas pipe of the outdoor unit module and the first interface of the first indoor unit module through the first communication pipe and the second communication pipe respectively, and the second interface of the first indoor unit module is connected with the gas pipe of the outdoor unit module, the second end of the heat exchanger is connected with the liquid pipe of the outdoor unit module through the third communication pipe, and the first electromagnetic valve and the second electromagnetic valve are arranged on the first communication pipe and the second communication pipe respectively. Through this setting, the flow of refrigerant in the system can efficiently exchange heat with the energy storage body, realizing effective storage and release of heat or cold. BRIEF DESCRIPTION OF DRAWINGS

[0026] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a structural schematic diagram of the air conditioning system of the present application Figure 1 ;

[0028] Figure 2 is a structural schematic diagram of the energy storage module of the present application

[0029] Figure 3 is a structural schematic diagram of the outdoor unit module of the present application

[0030] Figure 4 is a structural schematic diagram of the air conditioning system of the present application Figure 2 ;

[0031] Figure 5 is a structural schematic diagram of the air conditioning system of the present application Figure 3 ;

[0032] Figure 6 is a structural schematic diagram of the air conditioning system of the present application Figure 4 .

[0033] LIST OF REFERENCE NUMBERS

[0034] 1, outdoor unit module; 11, compressor; 12, four-way valve; 13, second expansion valve; 14, outdoor heat exchanger; 15, oil separator; 16, gas-liquid separator;

[0035] 2, energy storage module; 21, heat exchanger; 22, energy storage body; 23, first communication pipe; 231, first electromagnetic valve; 24, second communication pipe; 241, second electromagnetic valve; 25, third communication pipe; 26, fourth communication pipe; 261, third electromagnetic valve; 262, one-way valve; 27, first expansion valve;

[0036] 3, first indoor unit module; 31, first indoor heat exchanger;

[0037] 4. Second indoor unit module; 41. Second indoor heat exchanger. DETAILED DESCRIPTION

[0038] The following describes preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to explain 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 also applicable to other products that need to address the issues of large cooling attenuation in high-temperature environments and large indoor temperature fluctuations caused by heat absorption from the room during heating and defrosting.

[0039] 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.

[0040] Based on the problems pointed out in the background art, existing multi-split air-conditioning systems suffer from large cooling loss in high-temperature environments and large indoor temperature fluctuations caused by heat absorption from the room during heating and defrosting. The present invention provides an air-conditioning system that aims to effectively solve these problems by providing an energy storage module between the outdoor and indoor units to store cold or heat.

[0041] like Figure 1 As shown, the present invention provides an air-conditioning system, including an outdoor unit module 1, an energy storage module 2 and a first indoor unit module 3, the energy storage module 2 is detachably connected between the outdoor unit module 1 and the first indoor unit module 3, the energy storage module 2 can form a first unit with the outdoor unit module 1, the first unit can enter the outdoor heating operation and / or outdoor cooling operation, and the heat or cold generated by the first unit during operation can be stored in the energy storage module 2, the outdoor unit module 1, the energy storage module 2 and the first indoor unit module 3 can form a second unit, the second unit can perform indoor heating operation and / or indoor cooling operation, and when the second unit performs indoor cooling operation, the cold in the energy storage module 2 can be released to the refrigerant in the second unit, and when the second unit performs indoor heating operation, the waste heat generated by the second unit can be stored in the energy storage module 2.

[0042] The first unit in the application is composed of the energy storage module 2 and the outdoor unit module 1. The first unit has the ability of outdoor heating operation and outdoor cooling operation. During the operation, whether heating or cooling, the generated heat or cold will be stored in the energy storage module 2. For example, when the outdoor cooling operation, the cold generated by the outdoor unit module 1 will be collected and stored in the energy storage module 2; when the outdoor heating operation, the heat generated by the outdoor unit module 1 will also be stored in the energy storage module 2.

[0043] The second unit in the application is composed of the outdoor unit module 1, the energy storage module 2 and the first indoor unit module 3. The second unit can perform indoor heating operation and indoor cooling operation. When the second unit performs indoor cooling operation, the previously stored cold in the energy storage module 2 can be released to the refrigerant in the second unit to assist the cooling process, thereby enhancing the cooling effect of the second unit in high temperature environment; when the second unit performs indoor heating operation, the waste heat generated during the heating process will be stored in the energy storage module 2.

[0044] In high temperature environment, the cooling effect of ordinary air conditioning system will be greatly attenuated, while the air conditioning system of the application can store cold when the first unit performs outdoor cooling operation, and release the cold to the refrigerant when the second unit performs indoor cooling, thereby increasing the supercooling degree of the refrigerant in the second unit, effectively enhancing the cooling capacity of the second unit in high temperature environment, solving the problem of large cooling attenuation of traditional air conditioning system in high temperature environment, and providing users with more comfortable and efficient cooling experience in high temperature weather.

[0045] In addition, in the traditional air conditioning system, the outdoor unit module 1 usually needs to absorb heat from the indoor when defrosting, which will cause large fluctuation of indoor temperature, affecting the comfort of users. While the energy storage module 2 of the air conditioning system of the application stores heat when the first unit performs outdoor heating operation and the second unit performs indoor heating operation, when the outdoor unit module 1 needs to defrost, the energy storage module 2 can provide the required heat, avoiding heat absorption from the indoor, thereby effectively reducing the fluctuation of indoor temperature and improving the user experience.

[0046] Further, through the storage and release of heat and cold by the energy storage module 2, the rational allocation and efficient use of energy are realized. The excess heat or cold is stored at the right time and released for use when needed, avoiding waste of energy and improving the energy utilization efficiency of the whole air conditioning system.

[0047] Further, by setting the range extending module 3 in a detachable connection mode, the air conditioning system can be flexibly configured according to different use environments and requirements. For example, in a place with a larger space and higher cooling demand, the range extending module 3 can be installed to enhance the cooling performance of the system; while in a place with a smaller space or lower cooling demand, the range extending module 3 can be detached to reduce the system cost and energy consumption, thereby improving the adaptability and versatility of the system. Moreover, this detachable design enables the user to add the range extending module 3 to the existing system at any time according to the actual requirements, without the need for large-scale modification of the entire air conditioning system, thereby saving cost and improving the expansibility and practicality of the system.

[0048] Preferably, as shown in Figure 1 and Figure 2 , the energy storage module 2 comprises a heat exchanger 21 and an energy storage body 22, the heat exchanger 21 is in heat exchangeable connection with the energy storage body 22, the first end of the heat exchanger 21 is connected with the gas pipe of the outdoor unit module 1 and the first interface of the first indoor unit module 3 through the first communication pipe 23 and the second communication pipe 24 respectively, and the second interface of the first indoor unit module 3 is connected with the gas pipe of the outdoor unit module 1, the second end of the heat exchanger 21 is connected with the liquid pipe of the outdoor unit module 1 through the third communication pipe 25, and the first electromagnetic valve 231 and the second electromagnetic valve 241 are arranged on the first communication pipe 23 and the second communication pipe 24 respectively.

[0049] The heat exchanger 21 of the present application is in heat exchangeable connection with the energy storage body 22, and through reasonable pipe connection, the flow of refrigerant in the system can efficiently exchange heat with the energy storage body 22. In the process of refrigeration or heating, the excess heat or cold can be timely absorbed and stored by the energy storage body 22, and can be quickly released when needed, thereby improving the heat utilization efficiency of the entire air conditioning system and reducing energy waste.

[0050] By arranging the first electromagnetic valve 231 and the second electromagnetic valve 241, the flow of refrigerant between the heat exchanger 21, the outdoor unit module 1 and the first indoor unit module 3 can be accurately controlled. This enables the air conditioning system to flexibly switch operation modes according to different operating requirements, such as outdoor refrigeration, outdoor heating, indoor refrigeration, indoor heating and defrosting, etc. For example, when the energy storage module 2 needs to store heat or cold, the opening and closing state of the electromagnetic valve can be controlled to make the refrigerant flow along a specific path, thereby achieving efficient heat storage; when the stored heat or cold needs to be released, the electromagnetic valve can also be adjusted to allow the refrigerant to transfer the energy in the energy storage module 2 to the corresponding components, thereby meeting the requirements in different operating scenarios.

[0051] Exemplarily, the energy storage body 22 of the present application can be a phase change energy storage material (PCM) energy storage body, a water energy storage body, a hydrated salt energy storage body, etc., and the present application does not limit the specific material of the energy storage body 22.

[0052] Preferably, as shown in Figure 1 and Figure 2 The energy storage module 2 also includes a fourth communication pipe 26 connected between the liquid pipe of the outdoor unit module 1 and the first interface of the first indoor unit module 3, and a third electromagnetic valve 261 is provided on the fourth communication pipe 26. When the first electromagnetic valve 231 and the second electromagnetic valve 241 are closed and the third electromagnetic valve 261 is opened, the first indoor unit module 3 and the outdoor unit module 1 can form a third unit group, which can perform indoor heating operation and / or indoor cooling operation.

[0053] Through the fourth communication pipe 26 and the third electromagnetic valve 261, the air conditioning system has increased the third unit group operation mode based on the original operation mode. This diversified operation mode can better adapt to different environmental conditions and use requirements. For example, in some specific working conditions, the energy storage module 2 does not need to provide additional cooling capacity or store waste heat in the energy storage module 2, and the third unit group can be operated, thereby being more efficient and energy-saving. Users can flexibly choose the appropriate operation mode according to the actual situation, improving the applicability and flexibility of the air conditioning system.

[0054] Preferably, as shown in Figure 1 and Figure 2 A first expansion valve 27 is provided on the pipeline near the second end of the heat exchanger 21.

[0055] The first expansion valve 27 can accurately adjust the refrigerant flow and pressure entering the heat exchanger 21 according to the system's operation requirements. In different operating conditions, such as changes in outdoor temperature and indoor load, by adjusting the opening of the first expansion valve 27, the refrigerant can be fully evaporated in the heat exchanger 21, improving the heat exchange efficiency and thus improving the refrigeration or heating performance of the entire air conditioning system.

[0056] Preferably, as shown in Figure 1 and Figure 2 A one-way valve 262 is provided on the fourth communication pipe 26, the inlet of the one-way valve 262 communicates with the first interface of the first indoor unit, and the outlet of the one-way valve 262 communicates with the liquid pipe of the outdoor unit module 1.

[0057] The one-way valve 262 can ensure that the refrigerant flows in the fourth communication pipe 26 in the specified direction, preventing reverse flow of the refrigerant. If the refrigerant flows in reverse, it may cause abnormal system pressure, reduced refrigeration or heating effect, or even damage to system components. The provision of the one-way valve 262 effectively avoids such situations and ensures normal operation of the system. For example, in the third unit group operation mode, the one-way valve 262 can ensure that the refrigerant flows in the correct path, allowing the system to efficiently perform indoor heating or cooling operation, further improving the adaptability and flexibility of the system.

[0058] Preferably, as shown in Figure 1 and Figure 3 , the outdoor unit module 1 includes a compressor 11, a four-way valve 12, a second 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 intake port 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 gas 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 second expansion valve 13 is connected between the outdoor heat exchanger 14 and the energy storage module 2.

[0059] Through the four-way valve 12, the first unit and the second unit can conveniently realize the switching of the cooling and heating modes. In summer high temperature, the system switches to the cooling mode to transfer the heat in the room to the outside; in winter low temperature, the system switches to the heating mode to transfer the heat outside to the room, meeting the cooling and heating needs of users in different seasons.

[0060] The settings of the oil separator 15 and the gas-liquid separator 16 play an important protective role for the compressor 11. The oil separator 15 can effectively separate the lubricating oil in the refrigerant, ensuring that the lubricating oil can smoothly return to the compressor 11, reducing the wear of the compressor 11 and prolonging the service life of the compressor 11. The gas-liquid separator 16 prevents liquid refrigerant from entering the compressor 11, avoiding the occurrence of liquid strike phenomenon and ensuring the safe and reliable operation of the compressor 11.

[0061] The second expansion valve 13 optimizes the circulation process of the refrigerant in the system. It can accurately throttle and depressurize the refrigerant, so that the refrigerant is in a suitable state when entering the energy storage module 2 or the first indoor unit module 3, improving the evaporation efficiency of the refrigerant and thus improving the cooling or heating performance of the entire air conditioning system. At the same time, by accurately controlling the flow and pressure of the refrigerant, energy waste can be reduced and the energy utilization efficiency of the system can be improved.

[0062] Preferably, as shown in Figure 1 , the first indoor unit module 3 includes a first indoor heat exchanger 31, and the two sides of the first indoor heat exchanger 31 are respectively connected to the outlet of the energy storage module 2 and the gas pipe of the outdoor unit module 1.

[0063] When the first indoor heat exchanger 31 is connected to the outlet of the energy storage module 2 and the gas pipe of the outdoor unit module 1, the system can flexibly use the energy stored in the energy storage module 2 according to actual needs. For example, in a high temperature environment, the first unit operates in outdoor cooling mode and stores cold energy in the energy storage module 2, when the first indoor unit module 3 needs to cool, the refrigerant flows out from the outlet of the energy storage module 2, carries cold energy into the first indoor heat exchanger 31, and provides cooling effect for the room, improving the energy utilization efficiency.

[0064] Preferably, as shown in Figure 4 The first indoor unit module 3 is provided with multiple, and the multiple first indoor unit modules 3 are connected in parallel with the energy storage module 2.

[0065] The arrangement of multiple first indoor unit modules 3 enables the air conditioning system to provide cooling or heating services for multiple different areas simultaneously. For example, in a large building, different rooms or areas can independently control the operation of the corresponding first indoor unit module 3 according to their temperature requirements, meet the individualized temperature requirements of different users or different functional areas, and improve the applicability and flexibility of the air conditioning system.

[0066] In addition, since the multiple first indoor unit modules 3 are connected in parallel, when one of the first indoor unit modules 3 fails, it will not affect the normal operation of the other first indoor unit modules 3. The other first indoor unit modules 3 can continue to provide cooling or heating services for users, ensuring the stability of the overall function of the air conditioning system, reducing the risk of the entire system being unable to work normally due to the failure of a single first indoor unit module 3, and improving the reliability and maintainability of the system.

[0067] Preferably, as shown in Figure 5 The energy storage module 2 and the first indoor unit module 3 are provided with multiple, each energy storage module 2 is connected with at least one first indoor unit module 3, and multiple energy storage modules 2 are connected in parallel with the outdoor unit module 1.

[0068] The arrangement of multiple energy storage modules 2 and first indoor unit modules 3 enables the air conditioning system to more flexibly adapt to the use requirements of different areas. For example, in a large commercial building, different floors or different functional areas (such as shopping malls, offices, restaurants, etc.) may have different temperature and energy storage requirements. By reasonably configuring the connection relationship between the energy storage module 2 and the first indoor unit module 3, a customized cooling or heating scheme can be provided for each area to improve user comfort.

[0069] Each energy storage module 2 is connected with at least one first indoor unit module 3, and this one-to-one or one-to-many connection enables energy to be transmitted more directly and efficiently. The energy storage module 2 can accurately release or store energy according to the actual requirements of the first indoor unit module 3 connected thereto, avoiding the inefficient transmission and waste of energy, and improving the energy utilization efficiency of the system.

[0070] Preferably, as shown in Figure 6 The air conditioning system further comprises multiple second indoor unit modules 4, and the multiple second indoor unit modules 4 are connected in parallel with the energy storage module 2 and connected with the outdoor unit module 1 to form a fourth unit, and the fourth unit can perform indoor heating operation and / or indoor cooling operation.

[0071] The plurality of second indoor unit modules 4 are connected in parallel with the energy storage module 2, and then the whole is connected with the outdoor unit module 1, so that the refrigerant can directly enter the plurality of second indoor unit modules 4 from the outdoor unit module 1, forming a fourth unit. In the fourth unit, the refrigerant does not pass through the energy storage module 2, but directly circulates between the outdoor unit module 1 and the second indoor unit module 4.

[0072] Therefore, the plurality of second indoor unit modules 4 can further adapt the air conditioning system to the use requirements of more different areas and spaces. For example, in some areas with relatively low temperature requirements or without special processing of the energy storage module 2, the second indoor unit module 4 can be installed to perform refrigeration or heating through the fourth unit, thereby realizing more detailed and comprehensive temperature control of the entire building space.

[0073] Preferably, as shown in the drawings, the second indoor unit module 4 comprises a second indoor heat exchanger 41, and the two sides of the second indoor heat exchanger 41 are connected with the gas pipe of the outdoor unit module 1 and the liquid pipe of the outdoor unit module 1, respectively. Figure 6

[0074] The second indoor heat exchanger 41 is directly connected with the gas pipe and the liquid pipe of the outdoor unit module 1, and this simple connection mode makes the structure of the system more clear, facilitating installation and maintenance. At the same time, the control is relatively simple, and only by controlling the operating state of the outdoor unit module 1, the refrigeration or heating control of the second indoor unit module 4 can be realized, thereby reducing the complexity and control difficulty of the system.

[0075] In addition, the application also provides a multi-split air conditioner, which comprises the air conditioning system described above.

[0076] So far, the technical solutions of the application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the application, and the technical solutions after the changes or replacements will all fall within the protection scope of the application.​

Claims

1. An air conditioning system, characterized in that: It comprises an outdoor unit module (1), an energy storage module (2) and a first indoor unit module (3), wherein the energy storage module (2) is detachably connected between the outdoor unit module (1) and the first indoor unit module (3). The energy storage module (2) can form a first unit with the outdoor unit module (1), the first unit can enter the outdoor heating operation and / or outdoor cooling operation, and the heat or cold generated by the first unit during operation can be stored in the energy storage module (2). The outdoor unit module (1), the energy storage module (2) and the first indoor unit module (3) can form a second unit, and the second unit can perform indoor heating operation and / or indoor cooling operation, and when the second unit performs indoor cooling operation, the cold energy in the energy storage module (2) can be released to the refrigerant in the second unit, and when the second unit performs indoor heating operation, the waste heat generated by the second unit can be stored in the energy storage module (2).

2. The air conditioning system according to claim 1, characterized in that A plurality of the first indoor unit modules (3) are provided, and the plurality of the first indoor unit modules (3) are connected in parallel and then connected to the energy storage module (2).

3. The air conditioning system according to claim 1, characterized in that A plurality of the energy storage modules (2) and the first indoor unit modules (3) are provided, each of the energy storage modules (2) is connected to at least one of the first indoor unit modules (3), and a plurality of the energy storage modules (2) are connected in parallel to the outdoor unit module (1).

4. The air conditioning system according to claim 1, characterized in that The energy storage module (2) comprises a heat exchanger (21) and an energy storage body (22); the heat exchanger (21) and the energy storage body (22) are heat exchangeably connected; a first end of the heat exchanger (21) is connected to the gas pipe of the outdoor unit module (1) and the first interface of the first indoor unit module (3) through a first connecting pipe (23) and a second connecting pipe (24), respectively; and the second interface of the first indoor unit module (3) is connected to the gas pipe of the outdoor unit module (1); a second end of the heat exchanger (21) is connected to the liquid pipe of the outdoor unit module (1) through a third connecting pipe (25); and a first solenoid valve (231) and a second solenoid valve (241) are respectively provided on the first connecting pipe (23) and the second connecting pipe (24).

5. The air conditioning system according to claim 4, characterized in that The energy storage module (2) further comprises a fourth connecting pipe (26), the fourth connecting pipe (26) being connected between the liquid pipe of the outdoor unit module (1) and the first interface of the first indoor unit module (3), and a third solenoid valve (261) being provided on the fourth connecting pipe (26). When the first solenoid valve (231) and the second solenoid valve (241) are closed and the third solenoid valve (261) is opened, the first indoor unit module (3) and the outdoor unit module (1) can form a third unit, and the third unit can perform indoor heating operation and / or indoor cooling operation.

6. The air conditioning system according to claim 5, characterized in that A first expansion valve (27) is provided on the pipeline near the second end of the heat exchanger (21), and / or A one-way valve (262) is provided on the fourth connecting pipe (26), the inlet of the one-way valve (262) is connected to the first interface of the first indoor unit, and the outlet of the one-way valve (262) is connected to the liquid pipe of the outdoor unit module (1).

7. 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), a second 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 second expansion valve (13) is connected between the outdoor heat exchanger (14) and the energy storage module (2).

8. The air conditioning system according to claim 1, characterized in that The air conditioning system further comprises a plurality of second indoor unit modules (4), wherein the plurality of second indoor unit modules (4) are connected in parallel with the energy storage module (2) and then connected to the outdoor unit module (1) to form a fourth unit, wherein the fourth unit is capable of performing indoor heating operation and / or indoor cooling operation.

9. The air conditioning system according to claim 8, characterized in that The first indoor unit module (3) comprises a first indoor heat exchanger (31), both sides of the first indoor heat exchanger (31) are respectively connected to the outlet of the energy storage module (2) and the air pipe of the outdoor unit module (1), and / or The second indoor unit module (4) includes a second indoor heat exchanger (41), and both sides of the second indoor heat exchanger (41) are respectively connected to the gas pipe of the outdoor unit module (1) and the liquid pipe of 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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