Air conditioning system and control method thereof

Abstract

The application provides an air conditioning system and a control method thereof. The air conditioning system comprises a controller, a heat dissipation assembly and a water tank. The heat dissipation assembly is attached to the controller. The water tank is provided with a first water inlet, a first water outlet and a second water outlet. The air conditioning system further comprises a first pipeline, two ends of the first pipeline being in communication with the second water outlet and a second water inlet of the heat dissipation assembly respectively; a first control valve arranged on the first pipeline to control the opening and closing of the first pipeline; a second pipeline, two ends of the second pipeline being in communication with a third water outlet of the heat dissipation assembly and the first water inlet respectively; and a second control valve arranged on the second pipeline to control the opening and closing of the second pipeline. The application solves the problem that the heat dissipation temperature of the outdoor unit controller element is too high in the high-temperature environment, which affects the operation reliability of the whole machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat recovery air conditioning, in particular to an air conditioning system and a control method thereof. BACKGROUND

[0002] The heat recovery air conditioner is an air conditioning product that can simultaneously meet the requirements of conventional hot water and air conditioning refrigeration / heat, that is, the air conditioner and the water heater are integrated, and there are independent operation or simultaneous operation scenarios of the air conditioner and the water heater. In the simultaneous operation scenario, there are two operation modes of partial heat recovery and full heat recovery. When the cold and heat demands of refrigeration and hot water match, the system can enter the full heat recovery mode. In the full heat recovery mode, the water tank is a condenser, the indoor heat exchanger of the air conditioner is an evaporator, and the outdoor heat exchanger of the air conditioner does not participate in heat exchange. Conversely, in the partial heat recovery mode, the outdoor heat exchanger and the water tank both act as condensers to participate in the refrigeration cycle and exchange heat with the air.

[0003] During the refrigeration operation of the air conditioner, as the outdoor environment temperature rises, the heating temperature of the power device of the outdoor unit variable frequency controller rises. When the temperature of the controller components is higher than the safety value of the reliable operation of the air conditioner, the service life of the outdoor controller module is affected, and the operation reliability of the air conditioner is affected. SUMMARY

[0004] The main purpose of the present application is to provide an air conditioning system and a control method thereof, so as to solve the problem that the heating temperature of the outdoor controller components of the air conditioning system in the prior art is too high under high temperature environmental conditions, which affects the operation reliability of the whole machine.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an air conditioning system is provided, which comprises a controller, a heat dissipation assembly and a water tank, the heat dissipation assembly is attached to the controller, and the water tank is provided with a first water inlet, a first water outlet and a second water outlet; the air conditioning system further comprises: a first pipeline, two ends of the first pipeline are respectively communicated with the second water outlet and a second water inlet of the heat dissipation assembly; a first control valve, which is arranged on the first pipeline to control the opening and closing of the first pipeline; a second pipeline, two ends of the second pipeline are respectively communicated with a third water outlet of the heat dissipation assembly and the first water inlet; and a second control valve, which is arranged on the second pipeline to control the opening and closing of the second pipeline.

[0006] Further, the first control valve comprises a first interface, a second interface and a third interface; two ends of the first pipeline are respectively communicated with the second water outlet and the first interface, and the second pipeline is communicated with the second interface; the air conditioning system further comprises: a water supply main pipeline, which is communicated with the third interface.

[0007] Further, the first control valve further comprises a fourth interface, and the air conditioning system further comprises: a third pipeline, two ends of the third pipeline are respectively communicated with the fourth interface and the second pipeline.

[0008] Further, the second control valve comprises a fifth interface, a sixth interface and a seventh interface; the second pipeline comprises a first pipe section, a second pipe section and a third pipe section, two ends of the first pipe section being in communication with the third water outlet and the fifth interface respectively, two ends of the second pipe section being in communication with the sixth interface and the first water inlet respectively, two ends of the third pipe section being in communication with the second interface and the second water inlet respectively, two ends of the third pipeline being in communication with the fourth interface and the seventh interface respectively.

[0009] According to another aspect of the present application, a control method of an air conditioning system is provided, which is applicable to the air conditioning system described above, and the control method comprises: obtaining an actual temperature T of a controller in the air conditioner, comparing the actual temperature T with a preset temperature threshold; obtaining an operation mode of the air conditioner, the operation mode comprising a partial heat recovery refrigeration mode and a single refrigeration mode; and according to the operation mode of the air conditioner and the comparison result, controlling the first pipeline and the second pipeline to be turned on at the same time, or controlling the first pipeline to be turned off and the second pipeline to be turned on.

[0010] Further, when the air conditioner operates in the partial heat recovery refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method comprises:

[0011] controlling the first pipeline to be turned off and the second pipeline to be turned on, so that the water source flows into the water tank after flowing through the heat dissipation assembly.

[0012] Further, the preset temperature threshold comprises T1, T2 and T3, and T1

[0013] when the water amount in the water tank reaches a maximum value and T>T1;

[0014] the second pipeline is turned off, and the air conditioner operates in the current state for a first preset time.

[0015] Further, after the air conditioner operates in the current state for the first preset time and the actual temperature T>T2, the control method further comprises:

[0016] controlling the compressor of the air conditioner to reduce the operation frequency to a set frequency until the actual temperature T≤T2.

[0017] Further, after the compressor of the air conditioner operates at the set frequency for a second preset time and the actual temperature T>T3, the control method further comprises:

[0018] controlling the compressor to be turned off.

[0019] Further, when the air conditioner operates in the single refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method further comprises:

[0020] obtaining a water temperature T in the water tank 水 when the water temperature T 水Within the set water temperature range;

[0021] The first and second pipelines are connected, and the water in the water tank flows through the second outlet, passes through the heat dissipation components, and then flows back into the water tank through the first inlet.

[0022] Furthermore, the preset temperature threshold includes T 冷 and T 热 , among which, T 冷 <T 热 ;

[0023] When the water temperature T 水 Within the set water temperature range, including:

[0024] T 水 <T 冷 ;or

[0025] T 冷 <T 水 <T 热 -5℃.

[0026] According to the technical solution of this invention, an air conditioning system includes a controller, a heat dissipation component, and a water tank. The heat dissipation component is attached to the controller for cooling the controller. The water tank is provided with a first inlet, a first outlet, and a second outlet. The air conditioning system also includes: a first pipeline, the two ends of which are respectively connected to the second outlet and the second inlet of the heat dissipation component; a first control valve, which is provided on the first pipeline to control the on / off state of the first pipeline; a second pipeline, the two ends of which are respectively connected to the third outlet and the first inlet of the heat dissipation component; and a second control valve, which is provided on the second pipeline to control the on / off state of the second pipeline. By setting a first control valve and a second control valve, the water circulation path and flow rate can be adjusted according to the real-time temperature of the controller, avoiding unnecessary water circulation when the controller temperature has not reached the protection threshold, thus saving energy. It also avoids the water tank temperature from being too low due to excessive water circulation, which would affect the hot water supply. At the same time, the water in the tank can be directly introduced into the heat dissipation components to cool the controller, solving the problem in the existing air conditioning system where the outdoor unit controller components overheat under high temperature conditions, affecting the reliability of the entire unit. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1 A first working principle diagram of an air conditioning system according to the present invention is shown;

[0029] Figure 2 Fig. 2 shows a second working principle diagram of the air conditioning system according to the present application;

[0030] Figure 3 Fig. 3 shows a matching diagram of the heat dissipation assembly and the controller in the air conditioning system according to the present application;

[0031] Figure 4 Fig. 4 shows a control flow diagram of the air conditioning system according to the present application.

[0032] In the above drawings, the following reference signs are used:

[0033] 100, heat dissipation assembly; 200, water tank; 201, first water inlet; 202, first water outlet; 203, second water outlet; 300, first pipeline; 101, second water inlet; 102, third water outlet; 400, first control valve; 500, second pipeline; 600, second control valve; 401, first interface; 402, second interface; 403, third interface; 700, water supply main pipeline; 800, third pipeline; 601, fifth interface; 602, sixth interface; 603, seventh interface; 510, first pipe section; 520, second pipe section; 530, third pipe section; 404, fourth interface; 900, controller. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments and features in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0035] Please refer to Figures 1 to 3 The present application provides an air conditioning system, which comprises a controller 900, a heat dissipation assembly 100 and a water tank 200, the heat dissipation assembly 100 is attached to the controller 900, and the water tank 200 is provided with a first water inlet 201, a first water outlet 202 and a second water outlet 203; the air conditioning system further comprises: a first pipeline 300, two ends of the first pipeline 300 are respectively communicated with the second water outlet 203 and a second water inlet 101 of the heat dissipation assembly 100; a first control valve 400, which is arranged on the first pipeline 300 to control the on-off of the first pipeline 300; a second pipeline 500, two ends of the second pipeline 500 are respectively communicated with a third water outlet 102 of the heat dissipation assembly 100 and the first water inlet 201; and a second control valve 600, which is arranged on the second pipeline 500 to control the on-off of the second pipeline 500.

[0036] The air conditioning system provided in this application includes a controller 900, a heat dissipation assembly 100, and a water tank. The heat dissipation assembly 100 is attached to the controller 900 and is used to cool the controller 900. The water tank 200 is provided with a first water inlet 201, a first water outlet 202, and a second water outlet 203. The air conditioning system also includes: a first pipe 300, the two ends of which are respectively connected to the second water outlet 203 and the second water inlet 101 of the heat dissipation assembly 100; a first control valve 400, which is provided on the first pipe 300 to control the opening and closing of the first pipe 300; a second pipe 500, the two ends of which are respectively connected to the third water outlet 102 and the first water inlet 201 of the heat dissipation assembly 100; and a second control valve 600, which is provided on the second pipe 500 to control the opening and closing of the second pipe 500. By setting the first control valve 400 and the second control valve 600, the water circulation path and flow rate can be adjusted according to the real-time temperature of the controller, avoiding unnecessary water circulation when the controller temperature has not reached the protection threshold, thereby saving energy. It also avoids the water tank temperature from being too low due to excessive water circulation, which would affect the hot water supply. At the same time, the water in the water tank 200 can be directly introduced into the heat dissipation component 100 to cool the controller 900, solving the problem in the prior art where the outdoor unit controller components heat up too much under high temperature conditions, which affects the reliability of the entire unit.

[0037] The first inlet 201, the first outlet 202, and the second outlet 203 on the water tank 200, together with the first pipeline 300 and the second pipeline 500, as well as the control of the first control valve 400 and the second control valve 600, realize the intelligent circulation and reuse of cooling water, thereby improving the utilization efficiency of water resources.

[0038] Specifically, the first control valve 400 includes a first interface 401, a second interface 402, and a third interface 403; the two ends of the first pipeline 300 are respectively connected to the second outlet 203 and the first interface 401, and the second pipeline 500 is connected to the second interface 402; the air conditioning system also includes a main water supply pipeline 700, which is connected to the third interface 403. As a key fluid control component, the design of the three interfaces of the first control valve 400 ensures that the system can accurately control the direction and path of water flow according to different operating states and needs. The first interface 401 is connected to the second outlet 203 and the first pipeline 300, the second interface 402 is connected to the second pipeline 500, and the third interface 403 is directly connected to the main water supply pipeline 700. This layout allows for precise management of water circulation between the water tank 200, the heat dissipation component 100, and the main water supply pipeline 700, improving the system's flexibility and response speed.

[0039] In the partial heat recovery refrigeration mode or single refrigeration mode, when it is necessary to dissipate heat from the outdoor controller using the water in the water tank, the water flowing out of the second water outlet 203 can directly pass through the first interface 401 of the first control valve 400 and the first pipeline 300 to reach the heat dissipation assembly 100, and then return to the water tank 200 through the second pipeline 500, forming an effective water cooling cycle.

[0040] The first control valve 400 further includes a fourth interface 404, and the air conditioning system further includes a third pipeline 800, both ends of the third pipeline 800 being in communication with the fourth interface 404 and the second pipeline 500, respectively. By introducing the fourth interface 404 and the additional pipeline connection, the system can adjust the flow path of water or refrigerant in different operating modes, thereby improving the operating efficiency and flexibility of the heat recovery air conditioning system. For example, in the partial heat recovery mode, the water flow for cooling the controller can be more accurately controlled, while in the single refrigeration mode, the water in the water tank can be effectively utilized for cooling without affecting the supply of hot water.

[0041] Further, the second control valve 600 includes a fifth interface 601, a sixth interface 602, and a seventh interface 603; the second pipeline 500 includes a first pipe section 510, a second pipe section 520, and a third pipe section 530, both ends of the first pipe section 510 being in communication with the third water outlet 102 and the fifth interface 601, respectively, both ends of the second pipe section 520 being in communication with the sixth interface 602 and the first water inlet 201, respectively, both ends of the third pipe section 530 being in communication with the second water inlet 101 and the second interface 402, respectively, and both ends of the third pipeline 800 being in communication with the fourth interface 404 and the seventh interface 603, respectively. The second control valve 600 precisely controls the water circulation path through its fifth interface 601, sixth interface 602, and seventh interface 603. When it is necessary to cool the controller components, water can enter the first pipe section 510 of the second pipeline 500 from the water tank 200 through the second water outlet 203, flow through the heat dissipation assembly 100, and then pass through the fifth interface 601 and the second pipe section 520 to return to the water tank 200 through the sixth interface 602. Such a design ensures the efficiency of water circulation while providing precise control over water flow and path.

[0042] Through the second pipe section 520 and the third pipe section 530 of the second pipeline 500, the cooling water can be recycled. The cooling water first flows through the heat dissipation assembly 100, absorbs the heat of the controller components, and then returns to the water tank 200 through the second pipe section 520 and the third pipe section 530.

[0043] As Figure 4As shown, the present application also provides a control method of an air conditioning system, which is suitable for the air conditioning system of the above embodiments, and the control method comprises: acquiring an actual temperature T of a controller 900 in the air conditioner, comparing the actual temperature T with a preset temperature threshold; acquiring an operation mode of the air conditioner, the operation mode comprising a partial heat recovery refrigeration mode and a single refrigeration mode;

[0044] According to the operation mode of the air conditioner and the comparison result, the first pipeline 300 and the second pipeline 500 are controlled to be turned on at the same time, or the first pipeline 300 is controlled to be closed and the second pipeline 500 is controlled to be turned on.

[0045] By acquiring the actual temperature of the controller in the air conditioner in real time and comparing it with the preset temperature threshold, the working state of the controller can be accurately monitored, and heat dissipation measures can be taken in time to avoid system failure or component damage caused by overheating. The control method can automatically select the most suitable heat dissipation strategy according to the operation mode of the air conditioner (partial heat recovery refrigeration mode or single refrigeration mode), which not only improves the adaptability and flexibility of the system, but also ensures that the temperature of the controller can be effectively controlled in different operation modes, ensuring its normal operation. In the partial heat recovery refrigeration mode, when the temperature of the controller exceeds the preset threshold, the first pipeline and the second pipeline are controlled to be turned on at the same time, so that the flowing tap water can directly cool and dissipate heat for the controller, improving the heat dissipation efficiency and utilizing the additional value of the heat recovery system.

[0046] Specifically, when the air conditioner operates in the partial heat recovery refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method comprises: controlling the first pipeline 300 to be closed, controlling the second pipeline 500 to be turned on, and flowing into the water tank 200 after flowing through the heat dissipation assembly 100. In the partial heat recovery refrigeration mode, the water tank 200 participates in the refrigeration cycle as a condenser, and the second pipeline 500 is turned on so that the tap water can flow through the heat dissipation assembly 100 to directly cool the controller components, improving the directness and efficiency of heat dissipation. After absorbing the heat of the controller 900, the tap water flows into the water tank 200, increasing the temperature in the water tank 200, which is conducive to heat recovery.

[0047] By participating in the refrigeration cycle as a condenser, the water tank 200 not only realizes the function of heating water, but also can utilize the cooling water flowing through the water tank to dissipate heat for the controller, reducing the need for additional heat dissipation equipment and optimizing the utilization of resources in the system. This multi-purpose water tank design improves the overall energy utilization efficiency of the system.

[0048] In specific implementation, the preset temperature threshold comprises T1, T2 and T3, T1 < T2 < T3; the control method further comprises:

[0049] When the water quantity in the water tank 200 reaches the maximum value and T > T1 at the same time;

[0050] Close the second pipeline 500, and the air conditioner maintains the current state for a first preset time.

[0051] In the case of the water tank water reaching the maximum value, if the temperature T of the controller components exceeds T1, the system can intelligently close the second pipeline 500 to stop heat dissipation through water circulation, avoiding invalid energy consumption. At the same time, by maintaining the current state for a first preset time, the system can monitor the temperature change trend to provide data support for subsequent temperature control strategies.

[0052] After the air conditioner maintains the current state for a first preset time, when the actual temperature T > T2, the control method further includes: controlling the compressor of the air conditioner to reduce the operating frequency to a set frequency until the actual temperature T ≤ T2.

[0053] When the air conditioner maintains the current state for a first preset time, and the actual temperature T of the controller components is still higher than the preset temperature threshold T2, the system will take measures to control the compressor of the air conditioner to reduce the operating frequency to a set frequency until the actual temperature T drops to equal to or lower than T2. If the temperature T of the controller components further rises to exceed the preset shutdown temperature threshold T3 after the compressor runs at a reduced frequency for a second preset time, the control method will include controlling the compressor to completely stop to prevent potential risks caused by high temperature.

[0054] By adjusting the operating frequency of the compressor, the system can effectively control the temperature T of the controller components while ensuring the comfort of indoor temperature, preventing damage due to overheating. In addition, reducing the operating frequency of the compressor also means reducing energy consumption, achieving energy saving effect. The preset temperature thresholds T2 and T3 provide a temperature protection mechanism for the system, ensuring that the temperature of the controller components does not exceed the safety range in high temperature environment, thereby improving the running stability of the air conditioner in extreme conditions.

[0055] Further, after the compressor of the air conditioner is controlled to reduce the operating frequency to a set frequency for a second preset time, and the actual temperature T > T3, the control method further includes: controlling the compressor to stop. In the refrigeration mode, if the temperature T of the controller components is too high, it may trigger system protection, resulting in reduced refrigeration effect or accidental shutdown of the system, affecting user experience. By reducing the frequency of the compressor and stopping the protection, the controller components can be protected without affecting the overall refrigeration effect, maintaining the continuous and stable operation of the system, and optimizing the user experience. When the temperature T exceeds T3, the system automatically stops, which is a safety mechanism in emergency to prevent more serious failures such as electrical fire caused by overheating of components, enhancing the safety performance of the air conditioning system.

[0056] This strategy embodies the intelligent management of the operating state of the air conditioner. According to the real-time feedback of the temperature sensor, the operating state of the compressor can be dynamically adjusted to achieve the best temperature control effect, avoid frequent activation of advanced protection measures due to temperature fluctuations, reduce system impact, and enhance the intelligence and adaptability of the system.

[0057] In the embodiments provided in the present application, when the air conditioner operates in the single refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method further comprises:

[0058] Obtaining the water temperature T in the water tank 200 水 When the water temperature T 水 is within the set water temperature range;

[0059] The first pipeline 300 and the second pipeline 500 are controlled to be turned on respectively, and the water in the water tank 200 flows through the heat dissipation assembly 100 through the second water outlet 203 and then flows back to the water tank 200 through the first water inlet 201.

[0060] In the single refrigeration mode, the air conditioner mainly relies on the outdoor heat exchanger for heat exchange. When the temperature of the controller components rises, the water in the water tank at a suitable temperature range is used as a cooling medium to effectively dissipate heat from the controller by circulating through the heat dissipation assembly, thereby avoiding the controller from stopping working or reducing the frequency due to overheating, and maintaining the stable operation of the system. By setting the water temperature range, it is ensured that only when the water temperature T 水 in the water tank meets the cooling demand, the water circulation is started, which not only ensures the heat dissipation effect, but also avoids unnecessary water circulation when the water temperature is too high or too low, thereby optimizing the management and utilization of water temperature.

[0061] In the single refrigeration mode, although the water tank 200 does not participate in the refrigeration cycle, it can still play a role in cooling the controller components through the circulation of the water inside it. This not only maintains the function of the water tank in the partial heat recovery mode, but also expands its application in the single refrigeration mode, thereby embodying the flexibility and multifunctionality of the water tank design.

[0062] The preset temperature threshold includes T 冷 and T 热 , wherein T 冷 <T 热 ;

[0063] When the water temperature T 水 is within the set water temperature range, it includes:

[0064] T 水 <T 冷 ; or

[0065] T 冷 <T 水 <T热 -5℃.

[0066] By setting T 冷 and T 热 With two threshold values, the system can more accurately determine when to initiate the water cooling process, avoiding unnecessary cooling operations, reducing energy consumption in water circulation, and achieving efficient resource utilization. When the water temperature T_water is between T_cold and T_hot - 5℃, the water temperature in the tank is suitable as a cooling medium. The water circulates through the heat dissipation components to cool the controller components. Utilizing the heat capacity and flow characteristics of water, heat dissipation efficiency is improved, keeping the controller operating within a safe temperature range.

[0067] In single cooling mode, the water temperature in water tank 200 is lower than the temperature of controller 900. Therefore, the set water temperature range includes two threshold values, T. 冷 and T 热 Even if the water temperature is greater than T 冷 But less than T 热 At -5℃, the water in water tank 200 can still be used to cool controller 900.

[0068] This application provides a control method for a heat recovery air conditioning system. By monitoring the heating temperature of the outdoor unit controller components and combining the cooling operation modes under different heat recovery scenarios, the method utilizes the flowing tap water in the heat recovery system to intelligently dissipate heat from the outdoor unit controller components, thereby preventing the controller components from overheating and significantly improving the safety and reliability of the controller components.

[0069] Heat recovery air conditioning systems can operate in three modes: full heat recovery cooling, partial heat recovery cooling, and single cooling. In full heat recovery cooling, the cooling load simultaneously meets the needs for both hot water production and cooling capacity. In this mode, the outdoor unit heat exchanger does not participate in heat exchange, and the refrigerant does not need to flow through it. The water tank acts as a condenser, forming a refrigeration cycle system with the indoor unit evaporator, compressor, and throttling element through refrigerant piping. Since the outdoor unit does not participate in heat exchange in full heat recovery cooling, the controller module temperature will not be excessively high; therefore, this application does not include full heat recovery cooling. In partial heat recovery cooling, both the outdoor unit heat exchanger and water tank act as condensers, forming a refrigeration cycle system with the indoor unit evaporator, compressor, and throttling element through refrigerant piping. In single cooling mode, the water tank does not participate in heat exchange, and the outdoor unit heat exchanger acts as a condenser, forming a refrigeration cycle system with the indoor unit evaporator, compressor, and throttling element through refrigerant piping.

[0070] like Figure 1 , 2As shown, the heat recovery air conditioner of the present application is mainly divided into an outdoor unit and a water tank, and the outdoor unit is provided with a controller. The water tank is provided with one water inlet and two water outlets, wherein the first water outlet 202 is communicated with the faucets of each room to provide hot water for users, and the second water outlet is communicated with the water pipe of the outdoor unit controller for heat dissipation and cooling of the controller module, and the water inlet is connected with the water pipe near the water tank. The outdoor unit controller is provided with a water pipe, as shown in Figure 3 The water outlet of the water pipe can be combined with the water pipe leading to the water tank to enter the water tank, and the water inlet of the water pipe is connected with the water pipe near the water tank. The faucets near the water tank, the water pipes communicated with the outdoor unit and the water tank are provided with first control valves 400 and second control valves 600 to control the flow direction and flow rate of the tap water. The capacity of the water tank is divided into standard capacity and maximum capacity, and under normal circumstances, the water inlet can be controlled to stop when the water inlet reaches the standard capacity.

[0071] The control method of the present application is as follows:

[0072] 1. Partial heat recovery refrigeration mode control method:

[0073] When the partial heat recovery refrigeration mode is stably running, the heating temperature T of the components of the outdoor unit controller is monitored, and when the heating temperature T of the components of the controller is detected to be ≤ the protection temperature T1 set by the program, it indicates that the heating temperature of the components of the controller is within the safe and reliable range controlled by the program. If the capacity of the tap water in the water tank does not meet the standard capacity of the water tank at this time, the first control valve 400 can be controlled to make the tap water of the faucet flow to the third pipeline 800 of the tap water pipe and then pass through the second control valve 600, and the second control valve 600 is controlled to make the tap water directly enter the water tank; if the capacity of the tap water in the water tank has met the standard capacity of the water tank at this time, normal hot water heating can be carried out, and there is no need to control the water inlet.

[0074] When the temperature T of the components of the controller is detected to be greater than the protection temperature Tl set by the program, it indicates that the temperature of the components of the controller is too high, and the controller needs to be cooled. If the capacity of the tap water in the water tank does not meet the standard capacity of the water tank, the first control valve 400 is controlled to make the tap water of the faucet flow from the tap water pipeline branch 1 to the controller of the outdoor unit to cool the components of the controller, and then flow through the second control valve 600 and finally flow into the water tank. When the capacity of the tap water in the water tank meets the standard capacity but not the maximum capacity, the temperature T of the components of the controller is obtained. If the temperature T of the controller is less than or equal to the protection temperature Tl set by the program, the water tank is controlled to stop water inflow; if the temperature T of the controller is greater than the protection temperature Tl set by the program, the water inflow is continued to cool the temperature of the controller until the water inflow meets the maximum capacity of the water tank, and then the water inflow is stopped. When the temperature T of the controller is still greater than the protection temperature Tl set by the program, the existing state is maintained for a period of time, and then the temperature T of the controller is detected to be greater than the protection temperature T2 set by the program. In order to ensure the operation reliability of the whole machine, the frequency of the compressor is reduced until the temperature T of the controller is less than or equal to the protection temperature T2 set by the program. The existing state is maintained for 3 minutes, and then the original program setting frequency is run. If the frequency of the compressor is reduced, the temperature of the controller continues to rise until the temperature T of the controller is greater than the protection shutdown temperature T3 set by the program, and then the compressor is stopped to ensure the operation reliability of the prototype, and the whole machine stops running. (Note: the protection temperature Tl of the controller set by the program is less than T2, and T2 is less than T3.)

[0075] 2. Single refrigeration mode control method:

[0076] When the temperature T of the components of the controller is detected to be greater than the protection temperature Tl set by the program, it indicates that the temperature of the components of the controller is too high, and the controller needs to be cooled. If the capacity of the tap water in the water tank does not meet the standard capacity of the water tank, the first control valve 400 is controlled to make the tap water of the faucet flow from the tap water pipeline branch 1 to the controller of the outdoor unit to cool the components of the controller, and then flow through the second control valve 600 and finally flow into the water tank. When the capacity of the tap water in the water tank meets the standard capacity but not the maximum capacity, the temperature T of the components of the controller is obtained. If the temperature T of the controller is less than or equal to the protection temperature Tl set by the program, the water tank is controlled to stop water inflow; if the temperature T of the controller is greater than the protection temperature Tl set by the program, the water inflow is continued to cool the temperature of the controller until the water inflow meets the maximum capacity of the water tank, and then the water inflow is stopped. When the temperature T of the controller is still greater than the protection temperature Tl set by the program, the existing state is maintained for a period of time, and then the temperature T of the controller is detected to be greater than the protection temperature T2 set by the program. In order to ensure the operation reliability of the whole machine, the frequency of the compressor is reduced until the temperature T of the controller is less than or equal to the protection temperature T2 set by the program. The existing state is maintained for 3 minutes, and then the original program setting frequency is run. If the frequency of the compressor is reduced, the temperature of the controller continues to rise until the temperature T of the controller is greater than the protection shutdown temperature T3 set by the program, and then the compressor is stopped to ensure the operation reliability of the prototype, and the whole machine stops running. (Note: the protection temperature Tl of the controller set by the program is less than T2, and T2 is less than T3.)

[0077] When the temperature T of the components of the controller is detected to be greater than the protection temperature Tl set by the program, it indicates that the temperature of the components of the controller is too high, and the controller needs to be cooled. If the capacity of the tap water in the water tank does not meet the standard capacity of the water tank, the first control valve 400 is controlled to make the tap water of the faucet flow from the tap water pipeline branch 1 to the controller of the outdoor unit to cool the components of the controller, and then flow through the second control valve 600 and finally flow into the water tank. When the capacity of the tap water in the water tank meets the standard capacity but not the maximum capacity, the temperature T of the components of the controller is obtained. If the temperature T of the controller is less than or equal to the protection temperature Tl set by the program, the water tank is controlled to stop water inflow; if the temperature T of the controller is greater than the protection temperature Tl set by the program, the water inflow is continued to cool the temperature of the controller until the water inflow meets the maximum capacity of the water tank, and then the water inflow is stopped. When the temperature T of the controller is still greater than the protection temperature Tl set by the program, the existing state is maintained for a period of time, and then the temperature T of the controller is detected to be greater than the protection temperature T2 set by the program. In order to ensure the operation reliability of the whole machine, the frequency of the compressor is reduced until the temperature T of the controller is less than or equal to the protection temperature T2 set by the program. The existing state is maintained for 3 minutes, and then the original program setting frequency is run. If the frequency of the compressor is reduced, the temperature of the controller continues to rise until the temperature T of the controller is greater than the protection shutdown temperature T3 set by the program, and then the compressor is stopped to ensure the operation reliability of the prototype, and the whole machine stops running. (Note: the protection temperature Tl of the controller set by the program is less than T2, and T2 is less than T3.) 水 ≤T 冷 or T 冷 <T 水 <T 热-5℃, the water in the water tank can flow from the second water outlet 203 to the first pipeline 300, pass through the first control valve 400, be controlled by the first control valve 400 to flow to the third pipe section 530, and then flow through the outdoor unit controller, cool and radiate heat from the controller, and then flow back to the water tank from the water outlet, so as to be repeatedly circulated until the detected controller temperature T is less than or equal to the program-set protection temperature T1, and the water circulation cooling is stopped.

[0078] In the process of cooling and radiating heat from the controller by the tap water in the water tank, the temperature of the tap water will gradually increase, thereby reducing the heat radiation effect of the controller. When the detected controller temperature T is greater than the program-set protection temperature T2, in order to ensure the operation reliability of the whole machine, the compressor is controlled to reduce the operation frequency until the controller temperature T is less than or equal to the program-set protection temperature T2, and the present situation is maintained for 3 minutes before the original program-set frequency is operated. If the compressor reduces the operation frequency and the controller temperature continues to increase until the controller temperature T is greater than the program-set protection shutdown temperature T3, the compressor is controlled to stop, and the whole machine stops operating. (Note: The program-set controller protection temperatures T1 < T2 < T3).

[0079] If the temperature T of the tap water in the water tank is greater than T 水 > T 热 -5℃, at this time, the water temperature is relatively high, and the heat radiation effect on the controller is not obvious, so the normal refrigeration operation is performed until the detected controller temperature T is greater than the program-set protection temperature T2, the compressor reduces the frequency, and the controller continues to increase until the controller temperature T is greater than the program-set protection shutdown temperature T3, the compressor is controlled to stop, and the whole machine is stopped.

[0080] From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

[0081] The air conditioning system provided in this application includes a controller 900, a heat dissipation assembly 100, and a water tank. The heat dissipation assembly 100 is attached to the controller 900 and is used to cool the controller 900. The water tank 200 is provided with a first water inlet 201, a first water outlet 202, and a second water outlet 203. The air conditioning system also includes: a first pipe 300, the two ends of which are respectively connected to the second water outlet 203 and the second water inlet 101 of the heat dissipation assembly 100; a first control valve 400, which is provided on the first pipe 300 to control the opening and closing of the first pipe 300; a second pipe 500, the two ends of which are respectively connected to the third water outlet 102 and the first water inlet 201 of the heat dissipation assembly 100; and a second control valve 600, which is provided on the second pipe 500 to control the opening and closing of the second pipe 500. By setting the first control valve 400 and the second control valve 600, the water circulation path and flow rate can be adjusted according to the real-time temperature of the controller, avoiding unnecessary water circulation when the controller temperature has not reached the protection threshold, thereby saving energy. At the same time, it also avoids the water tank temperature from being too low due to excessive water circulation, which affects the hot water supply. In addition, the water in the water tank 200 can be directly introduced into the heat dissipation component 100 to cool the controller 900, solving the problem in the existing air conditioning system where the outdoor unit controller components heat up too much under high temperature conditions, which affects the reliability of the whole unit operation.

[0082] This solution addresses the issue of excessively high temperatures in outdoor unit controller components affecting the overall reliability of air conditioning systems under high-temperature conditions.

[0083] This solution addresses the problem that, under high-temperature conditions, the controller components overheat, triggering the control system's protection mechanism and causing the compressor to reduce its frequency, resulting in poor cooling and heat exchange performance and negatively impacting user comfort.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air conditioning system comprising a controller (900), a heat dissipation assembly (100) and a water tank (200), wherein the heat dissipation assembly (100) is attached to the controller (900), and characterized in that, the water tank (200) is provided with a first water inlet (201), a first water outlet (202) and a second water outlet (203); the air conditioning system further comprises: a first pipeline (300) having two ends respectively in communication with the second water outlet (203) and a second water inlet (101) of the heat dissipation assembly (100); a first control valve (400) arranged on the first pipeline (300) to control the opening and closing of the first pipeline (300); a second pipeline (500) having two ends respectively in communication with a third water outlet (102) of the heat dissipation assembly (100) and the first water inlet (201); a second control valve (600) arranged on the second pipeline (500) to control the opening and closing of the second pipeline (500); the first control valve (400) comprises a first interface (401), a second interface (402) and a third interface (403); the two ends of the first pipeline (300) are respectively in communication with the second water outlet (203) and the first interface (401), and the second pipeline (500) is in communication with the second interface (402); the air conditioning system further comprises: a water supply main pipeline (700) in communication with the third interface (403); the first control valve (400) further comprises a fourth interface (404); the air conditioning system further comprises: a third pipeline (800) having two ends respectively in communication with the fourth interface (404) and the second pipeline (500); the second control valve (600) comprises a fifth interface (601), a sixth interface (602) and a seventh interface (603); the second pipeline (500) comprises a first pipe section (510), a second pipe section (520) and a third pipe section (530), the two ends of the first pipe section (510) are respectively in communication with the third water outlet (102) and the fifth interface (601), the two ends of the second pipe section (520) are respectively in communication with the sixth interface (602) and the first water inlet (201), the two ends of the third pipe section (530) are respectively in communication with the second interface (402) and the second water inlet (101), and the two ends of the third pipeline (800) are respectively in communication with the fourth interface (404) and the seventh interface (603).

2. A control method of an air conditioning system according to claim 1, characterized by, the control method comprises: obtaining an actual temperature T of the controller (900) in the air conditioner, and comparing the actual temperature T with a preset temperature threshold; obtaining an operation mode of the air conditioner, wherein the operation mode comprises a partial heat recovery refrigeration mode and a single refrigeration mode. According to the operation mode of the air conditioner and the comparison result, the first pipeline (300) and the second pipeline (500) are controlled to be turned on at the same time, or the first pipeline (300) is controlled to be turned off and the second pipeline (500) is controlled to be turned on.

3. The control method according to claim 2, characterized by, When the air conditioner operates in the partial heat recovery refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method comprises: The first pipeline (300) is controlled to be turned off, and the second pipeline (500) is controlled to be turned on, so that the water source flows through the heat dissipation assembly (100) and then flows into the water tank (200).

4. The control method according to claim 3, characterized by, The preset temperature threshold comprises T1, T2 and T3, and T1 When the water amount in the water tank (200) reaches the maximum value and T>T1 at the same time; The second pipeline (500) is turned off, and the air conditioner maintains the current state to operate for a first preset time.

5. The control method according to claim 4, characterized by, After the air conditioner maintains the current state to operate for the first preset time, when the actual temperature T>T2, the control method further comprises: The compressor of the air conditioner is controlled to reduce the operation frequency to a set frequency until the actual temperature T≤T2.

6. The control method according to claim 5, characterized by After the compressor of the air conditioner is controlled to reduce the operation frequency to the set frequency and operates for a second preset time, and when the actual temperature T>T3 at the same time, the control method further comprises: The compressor is controlled to be turned off.

7. The control method according to claim 2, characterized by, When the air conditioner operates in the single refrigeration mode and the actual temperature T is greater than the preset temperature threshold, the control method further comprises: acquiring a water temperature in the water tank (200) when the water temperature in a set water temperature range; The first pipeline (300) and the second pipeline (500) are controlled to be turned on respectively, and the water in the water tank (200) flows through the heat dissipation assembly (100) through the second water outlet (203) and then flows back to the water tank (200) through the first water inlet (201).

8. The control method according to claim 7, characterized by, The preset temperature threshold includes and wherein, ; Said when the water temperature comprises when the water temperature is within a set water temperature range. ; or 。

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