Operation control method of heating and ventilation system, heating and ventilation system and related equipment

Abstract

The invention discloses an operation control method of a heating and ventilation system, the heating and ventilation system and related equipment. The heating and ventilation system comprises a heat source unit, a heat storage module and a control unit. Wherein the heat storage module is provided with a phase change material and at least one temperature sensor, and the heat source unit is connected with the heat storage module through an energy charging flow path. The control unit determines the target condensation temperature of the heat source unit based on the temperature, detected by the temperature sensor, of the phase change material when the heat storage module is charged; and controlling the compressor frequency of the heat source unit based on the target condensation temperature. In this way, the system can effectively improve the operation efficiency and the energy utilization rate, and meanwhile the stability and reliability of the system are ensured.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation, and air conditioning (HVAC) systems, and more particularly to an operation control method for an HVAC system, an HVAC system, and related equipment. Background Technology

[0002] With the rapid growth of global energy demand and increasingly stringent environmental requirements, phase change energy storage technology has gradually become a research hotspot in the HVAC field due to its advantages such as high efficiency and high heat storage density in energy storage and release. Phase change materials absorb or release a large amount of latent heat during solid-liquid or gas-liquid phase changes, significantly improving energy storage efficiency. Especially in heating and cooling systems, their small size and strong heat storage capacity allow them to provide higher heat storage density than traditional sensible heat storage materials within the commonly used temperature range of 10–65℃. However, despite the significant advantages of phase change energy storage technology, existing control systems often cannot accurately adapt to the nonlinear heat storage characteristics of phase change materials. Particularly during the operation of heat pump systems, a complex nonlinear relationship exists between the heat storage capacity of the heat storage module and temperature changes. Conventional control methods can lead to reduced system operating efficiency, or even overheating or insufficient heat storage, affecting the overall reliability and lifespan of the system. Summary of the Invention

[0003] This application provides an operation control method for an HVAC system, an HVAC system, and related equipment, which can effectively improve the system's operating efficiency and energy utilization while ensuring the system's stability and reliability. The above technical solution is as follows:

[0004] In a first aspect, embodiments of this application provide a heating, ventilation, and air conditioning (HVAC) system, which includes:

[0005] Heat source unit;

[0006] A heat storage module, wherein the heat storage module has a phase change material and at least one temperature sensor, and the heat source unit is connected to the heat storage module through a charging flow path.

[0007] The control unit is configured as follows:

[0008] When the aforementioned heat storage module is being charged, the target condensation temperature of the aforementioned heat source unit is determined based on the temperature of the aforementioned phase change material detected by at least one of the aforementioned temperature sensors.

[0009] The compressor frequency of the heat source unit is controlled based on the target condensation temperature.

[0010] In one possible implementation, the at least one temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the charging flow path relative to the other temperature sensors, and the second temperature sensor is located downstream of the charging flow path relative to the other temperature sensors.

[0011] In one possible implementation, the temperature sensor is inserted into the phase change material at a predetermined depth to detect the temperature of the phase change material at the predetermined depth; wherein the first temperature sensor is inserted into the phase change material at a first predetermined depth, the second temperature sensor is inserted into the phase change material at a second predetermined depth, and the first predetermined depth is less than the second predetermined depth.

[0012] In one possible implementation, the heat storage module is provided with a heat exchange module, which includes a plurality of sub-heat exchangers. The plurality of sub-heat exchangers are arranged in parallel and spaced apart in sequence along a first direction, and the gap between two adjacent sub-heat exchangers is provided with the phase change material. The temperature sensor is inserted into the phase change material between two adjacent sub-heat exchangers.

[0013] In one possible implementation, the aforementioned control unit is configured as follows:

[0014] Based on the setting mode of the above-mentioned HVAC system, the first weight corresponding to the first temperature sensor and the second weight corresponding to the second temperature sensor are determined, and the sum of the first weight and the second weight is 1.

[0015] The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight.

[0016] The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature described above.

[0017] In one possible implementation, the formula for calculating the virtual condensation temperature is as follows:

[0018] T x =A×T1+B×T2

[0019] Among them, T x Let A be the virtual condensation temperature, B be the first weight, T1 be the first temperature, and T2 be the second temperature.

[0020] In one possible implementation, the formula for calculating the target condensation temperature is as follows:

[0021] T cs =T x+ΔT+K

[0022] Among them, T cs For the target condensation temperature mentioned above, T x The virtual condensation temperature is ΔT, which is the difference between the temperature of the heating medium input to the heat source unit and the temperature of the heating medium output in the energy flow path. ΔT is 5 to 10°C, and K is a correction parameter with a value of 0 to 2°C.

[0023] In one possible implementation, the aforementioned control unit is configured as follows:

[0024] When the above-mentioned HVAC system is set to intelligent mode, the first weight and the second weight are determined based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy flow path.

[0025] In one possible implementation, a third temperature sensor is provided in the charging flow path. The third temperature sensor is located in the charging flow path between the heat source unit and the heat storage module to detect the temperature of the heating medium output by the heat source unit to the charging flow path.

[0026] In one possible implementation, when the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the control unit is configured to:

[0027] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to preset initial weights, and the first weight and the second weight are gradually reduced and gradually increased as the temperature of the heating medium increases.

[0028] If the temperature of the heating medium output by the above heat source unit reaches the above phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0029] The aforementioned preset initial weights are greater than 0 and less than 1.

[0030] In one possible implementation, the aforementioned preset initial weight is 0.5.

[0031] In one possible implementation, where the target temperature is not less than the phase change temperature of the phase change material within the heat storage module, the control unit is configured to:

[0032] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0.

[0033] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0034] If the temperature of the heating medium output by the heat source unit and the second temperature both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0035] In one possible implementation, the aforementioned control unit is configured as follows:

[0036] When the above-mentioned HVAC system is set to the rapid heating mode, the first weight is determined to be 1 and the second weight is determined to be 0.

[0037] In one possible implementation, the aforementioned control unit is configured as follows:

[0038] When the above-mentioned HVAC system is set to energy-saving mode, the first weight is determined to be 0 and the second weight is determined to be 1.

[0039] In one possible implementation, the aforementioned control unit is configured as follows:

[0040] When the target condensing temperature is greater than the current saturated condensing temperature, the compressor frequency of the heat source unit is increased.

[0041] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is reduced.

[0042] In one possible implementation, the aforementioned HVAC system further includes:

[0043] Heating unit, wherein the heat source unit is connected to the heating unit via a heating flow path;

[0044] The utilization unit is connected to the heat storage module via an energy release flow path.

[0045] The control valve is used to control the switching of the energy charging path and the heating path. The heating unit is connected in parallel with the heat storage module.

[0046] The control unit is configured to: when the heating unit is supplying heat, control the control valve to open the heating flow path so that the heating medium output by the heat source unit flows in the heating flow path; and when the heat storage module is charging, control the control valve to open the charging flow path so that the heating medium output by the heat source unit flows in the charging flow path.

[0047] In one possible implementation, the heat source unit includes a first heat source and a second heat source, wherein the first heat source is a heat pump unit and the second heat source is an auxiliary heat source.

[0048] The control unit is configured to turn on the second heat source when the preset auxiliary heating conditions are met, so as to heat the heating medium output by the heat source unit.

[0049] In one possible implementation, the aforementioned control unit is configured as follows:

[0050] When the aforementioned heat storage module is not charged but the aforementioned heating unit is supplying heat, the target condensing temperature is determined based on the heating target temperature of the aforementioned heating unit.

[0051] Secondly, embodiments of this application provide an operation control method for a heating, ventilation, and air conditioning (HVAC) system, applied to an HVAC system, wherein the HVAC system includes:

[0052] Heat source unit;

[0053] A heat storage module, wherein the heat storage module has a phase change material and at least one temperature sensor, and the heat source unit is connected to the heat storage module through a charging flow path.

[0054] The above methods include:

[0055] When the aforementioned heat storage module is being charged, the target condensation temperature of the aforementioned heat source unit is determined based on the temperature of the aforementioned phase change material detected by at least one of the aforementioned temperature sensors.

[0056] The compressor frequency of the heat source unit is controlled based on the target condensation temperature.

[0057] In one possible implementation, the at least one temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the charging flow path relative to the other temperature sensors, and the second temperature sensor is located downstream of the charging flow path relative to the other temperature sensors.

[0058] In one possible implementation, the temperature sensor is inserted into the phase change material at a predetermined depth to detect the temperature of the phase change material at the predetermined depth; wherein the first temperature sensor is inserted into the phase change material at a first predetermined depth, the second temperature sensor is inserted into the phase change material at a second predetermined depth, and the first predetermined depth is less than the second predetermined depth.

[0059] In one possible implementation, the heat storage module is provided with a heat exchange module, which includes a plurality of sub-heat exchangers. The plurality of sub-heat exchangers are arranged in parallel and spaced apart in sequence along a first direction, and the gap between two adjacent sub-heat exchangers is provided with the phase change material. The temperature sensor is inserted into the phase change material between two adjacent sub-heat exchangers.

[0060] In one possible implementation, the above method includes:

[0061] Based on the setting mode of the above-mentioned HVAC system, the first weight corresponding to the first temperature sensor and the second weight corresponding to the second temperature sensor are determined, and the sum of the first weight and the second weight is 1.

[0062] The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight.

[0063] The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature described above.

[0064] In one possible implementation, the formula for calculating the virtual condensation temperature is as follows:

[0065] T x =A×T1+B×T2

[0066] Among them, T x Let A be the virtual condensation temperature, B be the first weight, T1 be the first temperature, and T2 be the second temperature.

[0067] In one possible implementation, the formula for calculating the target condensation temperature is as follows:

[0068] T cs =T x +ΔT+K

[0069] Among them, T cs For the target condensation temperature mentioned above, T x The virtual condensation temperature is ΔT, which is the difference between the temperature of the heating medium input to the heat source unit and the temperature of the heating medium output in the energy flow path. ΔT is 5 to 10°C, and K is a correction parameter with a value of 0 to 2°C.

[0070] In one possible implementation, the above method includes:

[0071] When the above-mentioned HVAC system is set to intelligent mode, the first weight and the second weight are determined based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy flow path.

[0072] In one possible implementation, a third temperature sensor is provided in the charging flow path. The third temperature sensor is located in the charging flow path between the heat source unit and the heat storage module to detect the temperature of the heating medium output by the heat source unit to the charging flow path.

[0073] In one possible implementation, when the target temperature is lower than the phase change temperature of the phase change material within the heat storage module, the method includes:

[0074] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to preset initial weights, and the first weight and the second weight are gradually reduced and gradually increased as the temperature of the heating medium increases.

[0075] If the temperature of the heating medium output by the above heat source unit reaches the above phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0076] The aforementioned preset initial weights are greater than 0 and less than 1.

[0077] In one possible implementation, the aforementioned preset initial weight is 0.5.

[0078] In one possible implementation, where the target temperature is not less than the phase change temperature of the phase change material within the heat storage module, the method includes:

[0079] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0.

[0080] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0081] If the temperature of the heating medium output by the heat source unit and the second temperature both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0082] In one possible implementation, the above method includes:

[0083] When the above-mentioned HVAC system is set to the rapid heating mode, the first weight is determined to be 1 and the second weight is determined to be 0.

[0084] In one possible implementation, the above method includes:

[0085] When the above-mentioned HVAC system is set to energy-saving mode, the first weight is determined to be 0 and the second weight is determined to be 1.

[0086] In one possible implementation, the above method includes:

[0087] When the target condensing temperature is greater than the current saturated condensing temperature, the compressor frequency of the heat source unit is increased.

[0088] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is reduced.

[0089] In one possible implementation, the aforementioned HVAC system further includes:

[0090] Heating unit, wherein the heat source unit is connected to the heating unit via a heating flow path;

[0091] The utilization unit is connected to the heat storage module via an energy release flow path.

[0092] The control valve is used to control the switching of the energy charging path and the heating path. The heating unit is connected in parallel with the heat storage module.

[0093] The above method includes: when the heating unit is supplying heat, controlling the control valve to open the heating flow path so that the heating medium output by the heat source unit flows in the heating flow path; when the heat storage module is charging, controlling the control valve to open the charging flow path so that the heating medium output by the heat source unit flows in the charging flow path.

[0094] In one possible implementation, the heat source unit includes a first heat source and a second heat source, wherein the first heat source is a heat pump unit and the second heat source is an auxiliary heat source.

[0095] The above method includes: when the preset auxiliary heating conditions are met, turning on the second heat source to heat the heating medium output by the heat source unit.

[0096] In one possible implementation, the above method includes:

[0097] When the aforementioned heat storage module is not charged but the aforementioned heating unit is supplying heat, the target condensing temperature is determined based on the heating target temperature of the aforementioned heating unit.

[0098] Thirdly, embodiments of this application provide a computer storage medium storing multiple instructions adapted for loading and executing the above-described method steps by a processor.

[0099] Fourthly, embodiments of this application provide an electronic device, including: a processor and a memory; wherein the memory stores a computer program, the computer program being adapted to be loaded by the processor and executed by the above-described method steps.

[0100] In one or more embodiments of this application, a heating, ventilation, and air conditioning (HVAC) system is provided, comprising a heat source unit, a heat storage module, and a control unit. The heat storage module has a phase change material and at least one temperature sensor. The heat source unit is connected to the heat storage module via a charging flow path. When the heat storage module is charging, the control unit determines the target condensation temperature of the heat source unit based on the temperature of the phase change material detected by the at least one temperature sensor; and controls the compressor frequency of the heat source unit based on the target condensation temperature. In this way, the system can effectively improve operating efficiency and energy utilization while ensuring system stability and reliability. Attached Figure Description

[0101] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0102] Figure 1 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning system provided in an embodiment of this application;

[0103] Figure 2 A partial structural schematic diagram of a heat storage module provided in an embodiment of this application;

[0104] Figure 3 A schematic diagram of a cross-sectional structure of a heat storage module provided in an embodiment of this application;

[0105] Figure 4 A schematic diagram of a heat exchanger structure for a heat storage module provided in an embodiment of this application;

[0106] Figure 5 This is a schematic diagram of another HVAC system provided in an embodiment of this application;

[0107] Figure 6 A schematic diagram illustrating a weight change trend is provided for an embodiment of this application;

[0108] Figure 7 This is another schematic diagram illustrating the weight change trend provided in an embodiment of this application;

[0109] Figure 8 This is a schematic diagram of another HVAC system provided in an embodiment of this application;

[0110] Figure 9A flowchart illustrating an operation control method for a heating, ventilation, and air conditioning system provided in this application embodiment;

[0111] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0112] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0113] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0114] The present application will now be described in detail with reference to specific embodiments.

[0115] Please see Figure 1 , Figure 1 This is a schematic diagram of a heating, ventilation, and air conditioning (HVAC) system provided in an embodiment of this application. The HVAC system includes a heat source unit 100, a heat storage module 200, and a control unit (…). Figure 1 (Not shown in the image).

[0116] The heat source unit 100 is a device for providing heat, which may be a heat pump, boiler, or other device capable of generating heat. In this embodiment, the heat source unit 100 may include a heat pump unit, which includes a compressor responsible for generating heat by compressing refrigerant. By adjusting the frequency of the compressor, the system can precisely control the heat generation efficiency, thereby optimizing the energy efficiency and operational performance of the entire HVAC system.

[0117] The thermal storage module 200 incorporates a phase change material (PCM), which can efficiently store energy by absorbing and releasing a large amount of latent heat through phase changes (such as solid-liquid transition). Compared to traditional sensible heat storage materials (such as water), PCM has a higher heat storage density, enabling it to store more heat in a smaller volume. The thermal storage module 200 is equipped with at least one temperature sensor 210 for real-time monitoring of the PCM's temperature.

[0118] The heat source unit 100 is connected to the heat storage module 200 via the charging flow path 220 to transfer heat to the heat storage module 200, enabling the heat storage module 200 to effectively absorb and store heat. The charging flow path 220 can be understood as a connecting pipe between the heat source unit 100 and the heat storage module 200, used to transport the heating medium (such as water or other heat transfer fluids). During the charging process of the heat storage module 200, the heat generated by the heat source unit 100 is transferred to the phase change material in the heat storage module 220 through the charging flow path 100, thereby storing the heat. Optionally, a control valve and a circulation pump can be installed in the charging flow path 220 to control the flow direction and flow rate of the heating medium. In addition, the heat storage module 200 also includes a utilization unit 300, which is connected to the heat storage module 220 via the energy release flow path 230. Unit 300 can be used for devices such as water heaters to deliver domestic water (cold water) through the energy release path 230 to the heat storage module 200 for heat exchange with the phase change material, thereby achieving hot water supply.

[0119] The control unit is responsible for the automatic control and regulation of the system. It can connect to devices such as sensors, control valves, and circulating pumps, and execute preset control logic based on data provided by the sensors. For example, it can adjust the compressor frequency based on data from a temperature sensor. Optionally, the control unit also includes a communication module, enabling remote control or data exchange with other systems.

[0120] In this embodiment of the application, the control unit is configured as follows:

[0121] When the heat storage module is being charged, the target condensation temperature of the heat source unit is determined based on the temperature of the phase change material detected by at least one temperature sensor.

[0122] The compressor frequency of the aforementioned heat source unit is controlled based on the target condensation temperature.

[0123] Specifically, such as Figure 1As shown, when the heat storage module 200 is charged, the compressor of the heat source unit 100 operates to heat the heating medium in the charging flow path 220, so that the heat is transferred to the heat storage module 200 and stored by the phase change material. To ensure the efficient operation of the heat source unit 100, the control unit can detect the temperature of the phase change material in the heat storage module 200 in real time through the temperature sensor 210. The temperature change of the phase change material reflects its heat storage or heat release state. By accurately detecting the temperature of the phase change material, the working status of the phase change material can be understood in real time. Based on the detected temperature of the phase change material, the control unit can calculate the target condensing temperature of the heat source unit (such as a heat pump unit). The target condensing temperature refers to the ideal temperature that the condenser in the heat pump unit needs to reach so that the refrigerant can effectively complete the phase change (from gaseous to liquid) in the heat pump unit, thereby releasing heat. The condensing temperature is an important parameter that determines the performance of the heat pump, directly affecting the heat exchange efficiency of the refrigerant and the workload of the compressor. In a heat pump unit, the compressor's primary function is to compress the refrigerant, causing it to release heat and undergo a phase change in the condenser. The compressor's operating frequency determines the refrigerant's compression intensity and circulation speed; therefore, by adjusting the compressor's frequency, the refrigerant flow rate and condenser temperature can be altered. Upon detecting a temperature change in the phase change material, the control unit determines the desired target condensation temperature and adjusts the compressor frequency accordingly, bringing the condenser to or near this target temperature. This results in more precise heat generation and transfer within the heat source unit, improving overall energy efficiency, reducing unnecessary energy waste, and extending equipment lifespan.

[0124] In this embodiment, the heat storage module includes a phase change material and at least one temperature sensor. The heat source unit is connected to the heat storage module via a charging flow path. When the heat storage module is charging, the control unit determines the target condensation temperature of the heat source unit based on the temperature of the phase change material detected by the at least one temperature sensor; and controls the compressor frequency of the heat source unit based on the target condensation temperature. In this way, the system can effectively improve operating efficiency and energy utilization while ensuring system stability and reliability.

[0125] In some embodiments, the temperature sensor in the heat storage module includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the charging flow path compared to other temperature sensors, and the second temperature sensor is located downstream of the charging flow path compared to other temperature sensors.

[0126] Specifically, such as Figure 2As shown, the temperature sensors in the heat storage model 200 may include multiple sensors, such as temperature sensor 210-1, temperature sensor 210-2, temperature sensor 210-3, and temperature sensor 210-4, etc. Among them, temperature sensor 210-1 is the first temperature sensor, which is located upstream of the charging flow path 220 compared to the other temperature sensors; temperature sensor 210-2 is the second temperature sensor, which is located downstream of the charging flow path 220 compared to the other temperature sensors.

[0127] The upstream and downstream positions of the charging flow path 220 are defined relative to the flow direction of the heating medium within the charging flow path 220. During phase change energy storage, different regions of the heat storage module may exhibit temperature gradients. The phase change material in the upstream region of the charging flow path 220 (i.e., the high-temperature region, the region closer to the heat source unit in the flow direction of the heating medium) will preferentially absorb heat, resulting in a faster temperature rise. In contrast, the phase change material in the downstream region of the charging flow path (i.e., the low-temperature region, the region farther from the heat source unit in the flow direction of the heating medium) can absorb less heat, resulting in a slower temperature rise and thus temperature differences between the different regions.

[0128] Multiple temperature sensors are installed in the heat storage module 200 to detect the temperature of the phase change material at different locations within the module, thereby accurately understanding the working status of the phase change material. Among these temperature sensors, the first temperature sensor can be positioned at the upstream end of the charging flow path 220 in the heat storage module 220, so that the temperature detected by the first temperature sensor can be used to characterize the highest temperature of the phase change material. The second temperature sensor can be positioned at the downstream end of the charging flow path 220 in the heat storage module 220, so that the temperature detected by the second temperature sensor can be used to characterize the lowest temperature of the phase change material.

[0129] It is important to note that Figure 2 The locations and number of temperature sensors shown are merely examples. In actual implementation, two, three, or more temperature sensors can be set up in different areas to detect the temperature of the phase change material, depending on the requirements.

[0130] In some embodiments, such as Figure 3 The diagram shows a cross-sectional view of the heat storage module. A temperature sensor is located inside the phase change material 240, inserted to a predetermined depth, to detect the temperature of the phase change material 240 at that predetermined depth. Specifically, a first temperature sensor 211 is inserted to a first predetermined depth within the phase change material 240, and a second temperature sensor 212 is inserted to a second predetermined depth within the phase change material 240. The first predetermined depth is less than the second predetermined depth.

[0131] In this embodiment, the heating medium enters above the heat storage module through the charging flow path and exits below the heat storage module. It can be understood that the area above the heat storage module is the high-temperature zone, i.e., the region closer to the heat source unit in the flow direction of the heating medium, where the phase change material (PCM) undergoes a phase change first. The area below the heat storage module is the low-temperature zone, i.e., the region farther from the heat source unit in the flow direction of the heating medium, where the PCM undergoes a phase change later. Generally, the PCM gradually changes from a solid to a liquid state during the charging process. If the upper PCM undergoes a phase change first, the liquid PCM sinks, facilitating heat transfer downwards and promoting the phase change of the lower PCM, thus promoting uniform heat transfer. Therefore, a first temperature sensor is placed in a shallower position in the upper layer, and a second temperature sensor is placed in a deeper position in the lower layer to detect the temperatures of the high-temperature and low-temperature zones of the PCM in the heat storage module. This allows for more accurate detection of temperature changes during the phase change process and determination of the PCM's phase change progress. The temperature detected by the first temperature sensor represents the temperature of the high-temperature region of the phase change material. When this temperature reaches the phase change temperature of the phase change material, it indicates that the phase change material in the heat storage module has begun to undergo phase change. The temperature detected by the second temperature sensor represents the temperature of the low-temperature region of the phase change material. When this temperature reaches the phase change temperature of the phase change material, it indicates that the phase change material in the heat storage module has completed phase change.

[0132] It is important to note that Figure 3 The positions and number of temperature sensors shown are merely examples. In actual implementation, the positions of the charging flow path at the inlet and outlet of the heat storage module, as well as the positions of the first and second temperature sensors, can be adaptively adjusted according to the actual phase change material type or heat storage module structure.

[0133] In some embodiments, such as Figure 4 As shown, the heat storage module includes a heat exchange module 250, which comprises multiple sub-heat exchangers 251. These sub-heat exchangers 251 are arranged in parallel intervals along a first direction. This arrangement helps optimize heat exchange efficiency and facilitates installation and maintenance. Furthermore, there is a gap between adjacent sub-heat exchangers 251, allowing phase change material to be filled into the gap. A temperature sensor (i.e.,...) is also included. Figure 4 The first temperature sensor 210-1 and the second temperature sensor 210-2 can be inserted into the phase change material between two adjacent sub-heat exchangers 251, and the temperature of the phase change material between the two adjacent sub-heat exchangers 251 can be detected by the temperature sensor.

[0134] Optionally, the sub-heat exchanger 251 is typically a tube-fin heat exchanger, which improves heat transfer capacity by adding heat transfer fins to the heat exchange tubes.

[0135] The sub-heat exchanger 251 includes an energy charging flow path and an energy dissipation flow path. The energy charging flow path inlet 220-1, the energy charging flow path in the sub-heat exchanger 251, and the energy charging flow path outlet 220-2 are connected in sequence. The energy dissipation flow path inlet 230-1, the energy dissipation flow path in the sub-heat exchanger 251, and the energy dissipation flow path outlet 230-2 are connected in sequence.

[0136] In some embodiments, the control unit is configured to:

[0137] The first weight corresponding to the first temperature sensor and the second weight corresponding to the second temperature sensor are determined based on the setting mode of the HVAC system, and the sum of the first weight and the second weight is 1.

[0138] The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight.

[0139] The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature.

[0140] Specifically, as described in the above embodiments, the first temperature sensor is located in the upstream region of the charging flow path in the heat storage module. The first temperature detected by the first temperature sensor represents the temperature of the phase change material at a higher or shallower level in the heat storage module, and can be used to characterize the highest temperature of the phase change material. The second temperature sensor is located in the downstream region of the charging flow path in the heat storage module. The second temperature detected by the second temperature sensor represents the temperature of the phase change material at a lower or deeper level in the heat storage module, and can be used to characterize the lowest temperature of the phase change material. The first and second temperatures reflect the temperature changes of the phase change material at different depths in the heat storage module, which helps to determine the overall state of the entire heat storage module.

[0141] Virtual condensing temperature is a calculated temperature used to optimize the operation of HVAC systems. It reflects the overall thermal state of the heat storage module by combining data from temperature sensors at different locations, guiding the condensing control strategy of the HVAC system. Virtual condensing temperature is not a directly measured physical temperature, but rather a weighted average temperature calculated by the system based on readings from multiple temperature sensors and their respective weights. The first weight represents the relative importance of the first temperature sensor; a larger weight indicates a greater influence of the first sensor's temperature data on the virtual condensing temperature. The second weight represents the relative importance of the second temperature sensor; a larger weight indicates a greater influence of the second sensor's temperature data on the virtual condensing temperature. The sum of the first and second weights is 1, ensuring that both together determine the virtual condensing temperature.

[0142] In some embodiments, the formula for calculating the virtual condensation temperature can be:

[0143] T x =A×T1+B×T2

[0144] Among them, T x Let A be the virtual condensation temperature, B be the first weight, T1 be the first temperature, and T2 be the second temperature.

[0145] The formula for calculating the virtual condensing temperature described above indicates that the virtual condensing temperature can be obtained by weighted averaging of temperature values ​​(T1 and T2) at two different locations. A and B represent the weights of the two temperature sensors in the calculation of the virtual condensing temperature, ensuring that the influence of temperature at different locations on the result can be adjusted as needed. By calculating the virtual condensing temperature using the above weighted method, the system can obtain a virtual condensing temperature that reflects the overall thermal state of the heat storage module, and adjust the target condensing temperature of the heat source unit (such as a heat pump unit) based on this, thereby optimizing energy efficiency.

[0146] The calculated virtual condensing temperature is used to further determine the target condensing temperature of the heat source unit (such as a heat pump unit). The target condensing temperature determines how the heat pump adjusts the compressor's operating frequency and heat output. By combining data from multiple temperature sensors, the HVAC system can more precisely regulate the target condensing temperature, ensuring that the HVAC system operates under efficient and safe conditions.

[0147] In some embodiments, the formula for calculating the target condensation temperature is as follows:

[0148] T cs =T x +ΔT+K

[0149] Among them, T cs The target condensing temperature, i.e., the actual condensing temperature to be achieved, is used to control the operation of heat source units (such as heat pump units). The target condensing temperature affects the compressor's frequency and output efficiency. xThe virtual condensation temperature, combined with data and weights from different temperature sensors, reflects the overall temperature state of the phase change material within the heat storage module. ΔT is the difference between the input and output temperatures of the heating medium in the heat source unit within the charging flow path (this can be expressed as the temperature difference when the heating medium enters and leaves the heat source unit, or the temperature difference when the heating medium enters and leaves the heat storage module). This parameter reflects the heat exchange efficiency of the heating medium during the heating process. The ΔT value is generally controlled between 5 and 10°C to ensure effective heat exchange between the heat source unit and the heat storage module. If the ΔT value is too small (e.g., less than 5°C), the heat exchange of the heating medium is insufficient, leading to reduced system efficiency; conversely, if the ΔT value is too large (e.g., exceeding 10°C), it may cause excessive load on the heat pump or other components, affecting the system's operational stability. K is a correction parameter used to adjust the target condensation temperature according to actual conditions. The K value is typically between 0 and 2°C, used to correct deviations caused by external environmental or system conditions, thereby ensuring a more accurate target condensation temperature.

[0150] The above formula for calculating the target condensation temperature is derived from the virtual condensation temperature T. x The result is calculated by summing the temperature difference ΔT in the charging flow path and the system correction parameter K. This better reflects the real-time heat demand and actual operating conditions of the system, ensuring that the compressor and the entire heat source unit operate under optimal conditions. This allows the HVAC system to flexibly adjust its operation according to actual conditions, avoiding overheating or condensation, and ensuring higher energy efficiency and operational stability.

[0151] In some embodiments, the control unit is configured to:

[0152] When the target condensing temperature is greater than the current saturated condensing temperature, the compressor frequency of the control heat source unit is increased;

[0153] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the control heat source unit is reduced.

[0154] Specifically, when the target condensing temperature exceeds the current saturated condensing temperature, the HVAC system needs to heat up more quickly to reach the required target temperature. Therefore, the control unit increases the compressor frequency, accelerating the refrigerant circulation and thus enhancing the heating capacity of the heat source unit, enabling the heat storage module to reach the set target temperature in a shorter time.

[0155] When the target condensing temperature is lower than the current saturation condensing temperature, the HVAC system does not require excessive heat, so the control unit reduces the compressor frequency. Reducing the compressor frequency decreases the compressor's workload, avoids overheating and energy waste, and thus improves the overall efficiency of the system.

[0156] The target condensing temperature is a reference temperature set for the HVAC system, representing the condensing temperature the system needs to achieve to control the operation of the heat source unit. The saturated condensing temperature is a physical temperature related to the condensing pressure within the heat source unit, representing the temperature at which the refrigerant can complete a gas-to-liquid phase change under the current pressure. It can be obtained by looking up the condensing pressure within the heat source unit.

[0157] It should be noted that the compressor frequency has a working frequency range. Increasing the compressor frequency will not exceed its upper limit, and decreasing the compressor frequency will not exceed its lower limit. By dynamically adjusting the compressor frequency, it can be ensured that the HVAC system can operate with optimal efficiency and safety under different operating conditions.

[0158] When the heat storage module of the HVAC system is working, it has multiple setting modes, such as intelligent mode, rapid heating mode, and energy-saving mode. Different setting modes employ different energy charging strategies to control the energy charging process of the heat storage module, thereby meeting different operational needs and providing a flexible control solution.

[0159] In some embodiments, the control unit is configured to: determine a first weight of 1 and a second weight of 0 when the setting mode of the HVAC system is the rapid heating mode.

[0160] Specifically, when the target condensing temperature exceeds the current saturated condensing temperature, the higher the target condensing temperature, the more frequently the compressor will operate, thereby enhancing the heating capacity of the heat source unit and enabling it to transfer heat to the heat storage module more quickly. Therefore, in rapid heating mode, the control unit aims to quickly charge the heat storage module. In this mode, the control unit sets the first weight of the first temperature sensor to 1 and the second weight of the second temperature sensor to 0, meaning it relies entirely on the data from the first temperature sensor to determine the virtual condensing temperature and the target condensing temperature.

[0161] Since the first temperature sensor monitors the temperature of the phase change material in the high-temperature zone of the heat storage module, relying entirely on the target condensation temperature determined by the first temperature sensor will result in a higher temperature, thus accelerating the heating process and allowing the compressor to operate at a higher efficiency. This configuration ensures rapid energy charging in fast-heating mode, meeting the system's rapid heating requirements.

[0162] In some embodiments, the control unit is configured to: determine a first weight of 0 and a second weight of 1 when the setting mode of the HVAC system is energy-saving mode.

[0163] Specifically, when the HVAC system is in energy-saving mode, the control unit aims to charge the heat storage module with the lowest possible energy consumption. In this mode, the control unit sets the first weight to 0 and the second weight to 1, meaning it relies entirely on the second temperature sensor to determine the virtual condensing temperature and the target condensing temperature.

[0164] Since the second temperature sensor monitors the temperature of the phase change material in the low-temperature zone of the thermal storage module, relying entirely on the target condensation temperature determined by the second temperature sensor will result in a lower target condensation temperature, ensuring the charging process is completed with minimal energy consumption. This configuration allows the HVAC system to operate at a lower heating intensity, thereby achieving energy savings and ensuring that the thermal storage module can be charged with minimal energy consumption while meeting demand.

[0165] In some embodiments, the control unit is configured to: when the setting mode of the HVAC system is intelligent mode, determine a first weight and a second weight based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the charging flow path.

[0166] Specifically, when the HVAC system is in intelligent mode, the control unit aims to flexibly adjust the system's operating status according to actual needs to achieve optimal heating effect and energy efficiency balance. In this mode, the control unit dynamically determines the first and second weights based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy flow path.

[0167] The target temperature of the thermal storage module is a temperature set by the user, such as the user-defined hot water temperature (i.e., the hot water temperature output by the thermal storage module through unit heat exchange). The target temperature of the thermal storage module can be less than or greater than the phase change temperature of the phase change material.

[0168] The temperature of the heating medium output by the heat source unit in the charging flow path can be the actual temperature of the heating medium (such as water or other heat transfer fluid) output by the heat source unit (such as a heat pump unit), or the temperature of the heating medium before it enters the heat storage module. The temperature of the heating medium reflects the heating capacity that the heat source unit can currently provide.

[0169] Optionally, such as Figure 5 As shown, a third temperature sensor 110 is provided in the charging flow path of the HVAC system. The third temperature sensor 110 is located on the charging flow path 220 between the heat source unit 100 and the heat storage module 200 to detect the temperature of the heating medium output by the heat source unit 100 to the charging flow path 220.

[0170] The control unit adjusts the weights of the first and second temperature sensors based on the combined target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit, according to the current heat storage demand, thereby determining the virtual condensing temperature and the target condensing temperature. This dynamic weight adjustment method enables the HVAC system to operate efficiently under different operating conditions in intelligent mode, achieving a balance between rapid heating and energy saving.

[0171] In some embodiments, when the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the control unit is configured to:

[0172] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to the preset initial weight, and the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0173] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature, the first weight is set to 0 and the second weight is set to 1; wherein, the above-mentioned preset initial weight is greater than 0 and less than 1.

[0174] The phase change temperature of the phase change material within the heat storage module refers to the temperature at which the phase change material undergoes a phase transition between different phase states (such as solid and liquid). When the target temperature of the heat storage module is lower than the phase change temperature of the phase change material within the module, the control unit dynamically adjusts the first and second weights based on the temperature of the heating medium output by the heat source unit.

[0175] Specifically, when the HVAC system starts up, if the temperature of the heating medium output by the heat source unit is lower than the phase change temperature of the phase change material, the control unit will set the first weight and / or the second weight to a preset initial weight. Since the target temperature is low and excessively high heating efficiency is not required, a lower initial weight can be preset to achieve a balance between system heating efficiency and energy consumption. The preset initial weight is greater than 0 and less than 1. If the preset initial weight of the first weight is too low, the initial heating efficiency will be too low; if the preset initial weight of the second weight is too low, the system energy consumption will be too high. Optionally, the aforementioned preset initial weight is 0.5.

[0176] As the temperature of the heating medium increases, the control unit gradually decreases the first weight and gradually increases the second weight. This indicates that during the heating process, as heat is gradually transferred, the HVAC system pays more attention to the temperature change of the phase change material in the low-temperature zone of the heat storage module, thus making the calculated virtual condensation temperature and the target condensation temperature relatively low, saving energy while ensuring heating efficiency.

[0177] When the temperature of the heating medium output by the heat source unit reaches the phase change temperature of the phase change material, the temperature of the heating medium meets the condition for the phase change material in the heat storage module to start phase change. Since the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the required heat is small. At this time, the first weight is set to 0 and the second weight is set to 1. The target condensing temperature can be determined solely by the second temperature detected by the second temperature sensor (i.e., the low temperature zone temperature). At this time, the target condensing temperature may be lower than the current saturated condensing temperature. The compressor frequency is reduced to achieve energy-saving operation.

[0178] For example, such as Figure 6The graph shows the trend lines of the first weight (line A) and the second weight (line B) when the target temperature of the heat storage module is lower than the phase change temperature of the phase change material inside the heat storage module. The horizontal axis represents time, and the vertical axis represents the weight value. The specific determination method can be as follows:

[0179] Turn on the HVAC system and set the heat storage module to the target temperature T. s Less than the phase change temperature T of the phase change material inside the thermal storage module m At this time, the first weight A and the second weight B are assigned preset initial weights, such as A = 0.5 and B = 0.5. Based on A = 0.5 and B = 0.5, the target condensing temperature is determined and used as the control target for the compressor. The current output temperature T of the heating medium from the heat source unit is recorded. out The value is T i The temperature T of the heating medium output from the heat source unit. out Reaching phase transition temperature T m At this time, the first weight A and the second weight B are assigned the values ​​A=0 and B=1, respectively. Based on A=0 and B=1, the target condensing temperature is determined and used as the control target for the compressor. At this time, the target condensing temperature may be lower than the current saturated condensing temperature, and the compressor frequency is reduced to achieve energy-saving operation.

[0180] At the temperature of the heating medium T out <T m At that time, the trend line of the second weight B can be based on (T) i ,0.5)(T m 1) The line connecting these two points is calculated, that is, as the temperature T of the heating medium increases... out As the weight increases, the second weight B gradually increases from 0.5 to 1, and the trend line of the first weight A is calculated based on the fact that the sum of the first weight A and the second weight B is 1.

[0181] In some embodiments, when the target temperature is not less than the phase change temperature of the phase change material in the heat storage module, the control unit is configured to:

[0182] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0.

[0183] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0184] If the output temperature of the heating medium and the second temperature of the heat source unit both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0185] When the target temperature of the heat storage module is not less than the phase change temperature of the phase change material inside the heat storage module, the control unit will dynamically adjust the first weight and the second weight according to the temperature of the heating medium output by the heat source unit and the temperature of the phase change material.

[0186] Specifically, when the HVAC system starts up, if the temperature of the heating medium output by the heat source unit is lower than the phase change temperature of the phase change material, the control unit will set the first weight to 1 and the second weight to 0. Since the target temperature is greater than or equal to the phase change temperature of the phase change material in the heat storage module, a large amount of heat is required, and the heat storage module needs to be quickly charged. Therefore, the first weight is set to 1 during startup, so that the calculated virtual condensing temperature and the target condensing temperature are relatively high, allowing the compressor to maintain a higher frequency.

[0187] When the temperature of the heating medium output by the heat source unit reaches the phase change temperature of the phase change material, the temperature of the heating medium satisfies the condition for the phase change material in the heat storage module to begin phase change. As the temperature of the heating medium increases, the control unit gradually decreases the first weight and gradually increases the second weight. This indicates that during the subsequent heating process, as heat is gradually transferred, the HVAC system pays more attention to the temperature change of the phase change material in the low-temperature zone of the heat storage module, thus making the calculated virtual condensation temperature and the target condensation temperature relatively low, saving energy while ensuring heating efficiency.

[0188] When the output temperature of the heating medium and the second temperature of the heat source unit both reach the phase change temperature, it indicates that the phase change material of the heat storage module has basically completed the phase change. The first weight is set to 0 and the second weight is set to 1. The target condensing temperature can be determined solely by the second temperature detected by the second temperature sensor (i.e., the low temperature zone temperature). At this time, the target condensing temperature may be lower than the current saturated condensing temperature. The compressor frequency is reduced to achieve energy-saving operation.

[0189] For example, such as Figure 7 The graph shows the trend lines of the first weight (line A) and the second weight (line B) when the target temperature of the heat storage module is not less than the phase change temperature of the phase change material inside the heat storage module. The horizontal axis represents time, and the vertical axis represents the weight value. The specific determination method can be as follows:

[0190] Turn on the HVAC system and set the heat storage module to the target temperature T. s Greater than or equal to the phase change temperature T of the phase change material within the thermal storage module m At this point, the first weight A and the second weight B are assigned values ​​of A=1 and B=0, respectively. Based on A=0 and B=1, the target condensing temperature is determined and used as the control target for the compressor. Since the target condensing temperature is higher than the current saturated condensing temperature, the compressor increases its frequency to achieve rapid heating.

[0191] At the output temperature T of the heating medium from the heat source unit out Reaching phase transition temperature T mAt that time, record the value of the current second temperature T2 as T. 2i The phase transition temperature T is reached at the second temperature T2. m At this time, the first weight A and the second weight B are assigned the values ​​A=0 and B=1, respectively. Based on A=0 and B=1, the target condensing temperature is determined and used as the control target for the compressor. At this time, the target condensing temperature may be lower than the current saturated condensing temperature, and the compressor frequency is reduced to achieve energy-saving operation.

[0192] At the temperature of the heating medium T out >T m And T2 is less than T m At that time, the trend line of the second weight B can be based on (T) 2i ,0)(T m 1) The line connecting these two points is calculated to show that as the second temperature T2 increases, the second weight B gradually increases from 0 to 1. Based on the fact that the sum of the first weight A and the second weight B is 1, the trend line of the first weight A is calculated.

[0193] Please see Figure 8 , Figure 8 This is a schematic diagram of another HVAC system provided in an embodiment of this application. The HVAC system includes a heat source unit 100, a heat storage module 200, a utilization unit 300, a heating unit 400, and a control unit (…). Figure 8 (Not shown in the image). The heat source unit 100 is connected to the heating unit 400 via a heating flow path 410 to transfer heat to the heating unit 400. The heating unit 400 is connected in parallel with the heat storage module 200; that is, the heat source unit 100 can independently deliver the heating medium to the heat storage module 200 via the charging flow path 220, independently deliver the heating medium to the heating unit 400 via the heating flow path 410, or simultaneously deliver the heating medium to both the heat storage module 200 and the heating unit 400. A portion of the piping in the charging flow path 220 and the heating flow path 410 can be shared. The heating unit 400 can be one or more devices, including but not limited to fan coil units and underfloor heating.

[0194] The heating flow path 410 can be understood as a connecting pipe between the heat source unit 100 and the heating unit 400, used to transport the heating medium (such as water or other heat transfer fluids). During the heating process of the heating unit 400, the heat generated by the heat source unit 100 is transferred to the heating unit 400 through the heating flow path 410, thereby providing heating. Control valves 500 may be provided in the energizing flow path 220 and the heating flow path 410 to control the opening and closing of the energizing flow path 220 and the heating flow path 410.

[0195] In this embodiment of the application, the control unit is configured as follows:

[0196] When the heating unit 400 provides heat, the control valve 500 opens the heating flow path 410 so that the heating medium output by the heat source unit 100 flows in the heating flow path 410; when the heat storage module 200 is charged, the control valve 500 opens the charging flow path 220 so that the heating medium output by the heat source unit 100 flows in the charging flow path 220.

[0197] Specifically, the thermal storage module 200 has multiple operating modes, such as a charging mode and a discharging mode. In the charging mode, the charging path 220 can be opened or closed based on the thermal energy status of the thermal storage module 200. Specifically, when the thermal energy of the thermal storage module 200 is insufficient, it is charged by controlling the control valve 500 to open the charging path 220; when the thermal energy of the thermal storage module 200 is sufficient (meeting user needs), charging is stopped, and the control valve 500 closes the charging path 220. In the discharging mode, the discharging path 230 can be opened or closed based on user needs. The unit 300 is connected to the thermal storage module 220 through the discharging path 230. The unit 300 can be used for devices such as water heaters, allowing domestic hot water (cold water) to be transported to the thermal storage module 200 through the discharging path 230 for heat exchange with the phase change material, thus providing hot water. The charging flow path 220 and the discharging flow path 230 can operate simultaneously.

[0198] If a user requires high-temperature rapid heating when using a heat storage unit (such as a water heater), a rapid heating mode can be adopted. The target condensing temperature is calculated based on the highest phase change material temperature detected by the temperature sensor in the heat storage module (such as the first temperature mentioned above). At this time, the target condensing temperature may be higher than the current saturated condensing temperature. The compressor is controlled to continuously increase the frequency so that the current saturated condensing temperature is closer to the target condensing temperature until the current saturated condensing temperature is the same as the target condensing temperature or the compressor reaches the upper limit of the frequency, at which point the frequency increase stops.

[0199] If the user's demand for the temperature energy of the utilization unit (such as a water heater) does not exceed the current thermal energy of the heat storage module, an energy-saving mode can be adopted. The target condensing temperature is calculated based on the lowest phase change material temperature detected by the temperature sensor in the heat storage module (such as the second temperature mentioned above). At this time, the target condensing temperature may be lower than the current saturated condensing temperature. The compressor is controlled to continuously reduce its frequency so that the current saturated condensing temperature is closer to the target condensing temperature until the current saturated condensing temperature is the same as the target condensing temperature or the compressor reaches the lower limit of its frequency, at which point the frequency reduction stops.

[0200] In some embodiments, the heat source unit 100 includes a first heat source 110 and a second heat source 120, wherein the first heat source 110 is a heat pump unit and the second heat source 120 is an auxiliary heat source; the control unit is configured to turn on the second heat source 120 to heat the heating medium output by the heat source unit when the preset auxiliary heating conditions are met.

[0201] For example, the operating modes of the heat source unit 100 may include the following:

[0202] First heat source heating mode: When a user has a heating demand, the heat storage module 200 is not charged. By controlling the control valve 500, the heating medium heated by the first heat source 110 flows only to the heating unit 400. The first heat source 110 only heats the heating unit 400 and does not charge the heat storage unit 200.

[0203] First heat source heat storage mode: The heat storage module 200 is in the charging state and the user has no heating demand. According to the energy status of the heat storage unit 200, the control valve 500 is controlled so that the heating medium heated by the first heat source 110 flows only to the heat storage unit 200. The first heat source 110 only charges the heat storage unit 200 and does not supply heat to the heating unit 400.

[0204] Second heat source heating mode: The second heat source 120 is an auxiliary heating system (AHS), which is activated when the first heat source 110 (such as a heat pump unit) cannot provide sufficient heat. It can use electric heating or other heating equipment. Generally, the second heat source heating mode is activated when the anti-blocking system (ABS) of the HVAC system is enabled, and scenarios such as excessively low heating medium temperature, defrosting of the heat pump outdoor unit, or forced start of heating are encountered while supplying heat to heating unit 400, to ensure the normal operation of heat source unit 100.

[0205] Second heat source heat storage mode: Generally, when the ABS setting of the HVAC system is effective, the second heat source heat storage mode is activated when the temperature of the heating medium is too low, the outdoor unit of the heat pump is defrosting, or the heat storage charging is forcibly started, in order to ensure that the heat source unit 100 works normally.

[0206] The first heat source 110 and the second heat source 120 can be used in combination. The priority of each working mode can be preset, and the working mode with the higher priority level will be responded to first and controlled according to the control method of the working mode.

[0207] In some embodiments, the control unit is configured to:

[0208] When the heat storage module is not being charged but the heating unit is providing heat, the target condensing temperature is determined based on the heating target temperature of the heating unit.

[0209] Specifically, when the heat storage module is charging, the target condensing temperature of the compressor in the heat source unit is determined based on the virtual condensing temperature set by the heat storage module. When the heat storage module is charging and the heating unit is supplying heat, since the heat storage module requires more heat energy, the target condensing temperature of the compressor in the heat source unit is determined based on the virtual condensing temperature set by the heat storage module. When the heat storage module stops charging, only the heating unit supplies heat. The target condensing temperature of the compressor in the heat source unit is determined based on the heating unit's target heating temperature, which is the temperature set by the user according to their heating needs, such as the indoor ambient temperature set by the user.

[0210] Next, we will combine Figure 1 The provided HVAC system illustrates the operation control method offered in this application. The operation control method for the HVAC system provided in this embodiment can effectively improve operating efficiency and energy utilization, while ensuring system stability and reliability. Please refer to... Figure 9 , Figure 9 This is a flowchart illustrating an operation control method for a heating, ventilation, and air conditioning system provided in an embodiment of this application. The operation control method includes the following steps:

[0211] S901, when the heat storage module is being charged, the target condensation temperature of the heat source unit is determined based on the temperature of the phase change material detected by at least one temperature sensor.

[0212] S902 controls the compressor frequency of the heat source unit based on the target condensing temperature.

[0213] In some embodiments, the at least one temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the charging flow path relative to the other temperature sensors, and the second temperature sensor is located downstream of the charging flow path relative to the other temperature sensors.

[0214] In some embodiments, the temperature sensor is inserted into the phase change material at a predetermined depth to detect the temperature of the phase change material at the predetermined depth; wherein the first temperature sensor is inserted into the phase change material at a first predetermined depth, the second temperature sensor is inserted into the phase change material at a second predetermined depth, and the first predetermined depth is less than the second predetermined depth.

[0215] In some embodiments, the heat storage module is provided with a heat exchange module, which includes a plurality of sub-heat exchangers. The plurality of sub-heat exchangers are arranged in parallel and spaced apart in sequence along a first direction, and the gap between two adjacent sub-heat exchangers is provided with the phase change material. The temperature sensor is inserted into the phase change material between two adjacent sub-heat exchangers.

[0216] In some embodiments, the above method includes:

[0217] Based on the setting mode of the above-mentioned HVAC system, the first weight corresponding to the first temperature sensor and the second weight corresponding to the second temperature sensor are determined, and the sum of the first weight and the second weight is 1.

[0218] The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight.

[0219] The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature described above.

[0220] In some embodiments, the formula for calculating the virtual condensation temperature is as follows:

[0221] T x =A×T1+B×T2

[0222] Among them, T x Let A be the virtual condensation temperature, B be the first weight, T1 be the first temperature, and T2 be the second temperature.

[0223] In some embodiments, the formula for calculating the target condensation temperature is as follows:

[0224] T cs =T x +ΔT+K

[0225] Among them, T cs For the target condensation temperature mentioned above, T x The virtual condensation temperature is ΔT, which is the difference between the temperature of the heating medium input to the heat source unit and the temperature of the heating medium output in the energy flow path. ΔT is 5 to 10°C, and K is a correction parameter with a value of 0 to 2°C.

[0226] In some embodiments, the above method includes:

[0227] When the above-mentioned HVAC system is set to intelligent mode, the first weight and the second weight are determined based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy flow path.

[0228] In some embodiments, a third temperature sensor is provided in the charging flow path. The third temperature sensor is located in the charging flow path between the heat source unit and the heat storage module to detect the temperature of the heating medium output by the heat source unit to the charging flow path.

[0229] In some embodiments, when the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the method includes:

[0230] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to preset initial weights, and the first weight and the second weight are gradually reduced and gradually increased as the temperature of the heating medium increases.

[0231] If the temperature of the heating medium output by the above heat source unit reaches the above phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0232] The aforementioned preset initial weights are greater than 0 and less than 1.

[0233] In some embodiments, the preset initial weight is 0.5.

[0234] In some embodiments, when the target temperature is not less than the phase change temperature of the phase change material in the heat storage module, the method includes:

[0235] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0.

[0236] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0237] If the temperature of the heating medium output by the heat source unit and the second temperature both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0238] In some embodiments, the above method includes:

[0239] When the above-mentioned HVAC system is set to the rapid heating mode, the first weight is determined to be 1 and the second weight is determined to be 0.

[0240] In some embodiments, the above method includes:

[0241] When the above-mentioned HVAC system is set to energy-saving mode, the first weight is determined to be 0 and the second weight is determined to be 1.

[0242] In some embodiments, the above method includes:

[0243] When the target condensing temperature is greater than the current saturated condensing temperature, the compressor frequency of the heat source unit is increased.

[0244] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is reduced.

[0245] In some embodiments, the above-described HVAC system further includes:

[0246] Heating unit, wherein the heat source unit is connected to the heating unit via a heating flow path;

[0247] The utilization unit is connected to the heat storage module via an energy release flow path.

[0248] The control valve is used to control the switching of the energy charging path and the heating path. The heating unit is connected in parallel with the heat storage module.

[0249] The above method includes: when the heating unit is supplying heat, controlling the control valve to open the heating flow path so that the heating medium output by the heat source unit flows in the heating flow path; when the heat storage module is charging, controlling the control valve to open the charging flow path so that the heating medium output by the heat source unit flows in the charging flow path.

[0250] In some embodiments, the heat source unit includes a first heat source and a second heat source, wherein the first heat source is a heat pump unit and the second heat source is an auxiliary heat source;

[0251] The above method includes: when the preset auxiliary heating conditions are met, turning on the second heat source to heat the heating medium output by the heat source unit.

[0252] In some embodiments, the above method includes:

[0253] When the aforementioned heat storage module is not charged but the aforementioned heating unit is supplying heat, the target condensing temperature is determined based on the heating target temperature of the aforementioned heating unit.

[0254] In this embodiment, the HVAC system includes a heat source unit, a heat storage module, and a control unit. The heat storage module has a phase change material and at least one temperature sensor, and the heat source unit is connected to the heat storage module through a charging flow path. The operation control method of the HVAC system includes: determining the target condensation temperature of the heat source unit based on the temperature of the phase change material detected by the at least one temperature sensor when the heat storage module is charging; and controlling the compressor frequency of the heat source unit based on the target condensation temperature. In this way, the system can effectively improve operating efficiency and energy utilization while ensuring the stability and reliability of the system.

[0255] Please see below. Figure 10This application provides a structural block diagram of an electronic device. The electronic device is applied in a heating, ventilation, and air conditioning (HVAC) system, which includes: a heat source unit; and a heat storage module, wherein the heat storage module has a phase change material and at least one temperature sensor. The heat source unit is connected to the heat storage module via a charging path. The electronic device may include one or more of the following components: a processor 1010, a memory 1020, an input device 1030, an output device 1040, and a bus 1050. The processor 1010, memory 1020, input device 1030, and output device 1040 can be connected via the bus 1050.

[0256] Processor 1010 may include one or more processing cores. Processor 1010 connects to various parts of the electronic device using various interfaces and lines, and performs various functions and processes data of the HVAC system by running or executing instructions, programs, code sets, or instruction sets stored in memory 1020, and by calling data stored in memory 1020. Optionally, processor 1010 may be implemented using at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). Processor 1010 may integrate one or a combination of central processing unit (CPU), graphics processing unit (GPU), and modem. It is understood that the aforementioned modem may also not be integrated into processor 1010, but may be implemented separately through a communication chip.

[0257] The memory 1020 may include random access memory (RAM) or read-only memory (ROM). Optionally, the memory 1020 may include non-transitory computer-readable storage medium. The memory 1020 may be used to store instructions, programs, code, code sets, or instruction sets.

[0258] The input device 1030 is used to receive input instructions or data, and the input device 1030 may include, but is not limited to, a remote control, a microphone, or other touch devices. The output device 1040 is used to output instructions or data.

[0259] In addition, those skilled in the art will understand that the structure of the electronic device shown in the above figures does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements. For example, the electronic device may also include radio frequency circuits, input units, sensors, audio circuits, wireless fidelity (WIFI) modules, power supplies, Bluetooth modules, etc., which will not be described in detail here.

[0260] Understandable, Figure 10 This is an optional structure of an electronic device shown for ease of understanding. The specific structure of the electronic device can be designed and changed according to actual conditions, and the embodiments of this application do not impose specific limitations on it.

[0261] exist Figure 10 In the electronic device, the memory 1020 can store a program for any of the above-mentioned operating control methods of the HVAC system. The processor 1010 can be used to call the program for any of the operating control methods of the HVAC system stored in the memory 1020.

[0262] For example, in some embodiments, the processor 1010 can be used to invoke the HVAC system operation control method stored in the memory 1020, and specifically perform the following operations:

[0263] When the aforementioned heat storage module is being charged, the target condensation temperature of the aforementioned heat source unit is determined based on the temperature of the aforementioned phase change material detected by at least one of the aforementioned temperature sensors.

[0264] The compressor frequency of the heat source unit is controlled based on the target condensation temperature.

[0265] In some possible embodiments, the at least one temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the charging flow path relative to the other temperature sensors, and the second temperature sensor is located downstream of the charging flow path relative to the other temperature sensors.

[0266] In some possible embodiments, the temperature sensor is inserted into the phase change material at a predetermined depth to detect the temperature of the phase change material at the predetermined depth; wherein the first temperature sensor is inserted into the phase change material at a first predetermined depth, the second temperature sensor is inserted into the phase change material at a second predetermined depth, and the first predetermined depth is less than the second predetermined depth.

[0267] In some possible embodiments, the heat storage module is provided with a heat exchange module, which includes a plurality of sub-heat exchangers. The plurality of sub-heat exchangers are arranged in parallel and spaced apart in sequence along a first direction, and the gap between two adjacent sub-heat exchangers is provided with the phase change material. The temperature sensor is inserted into the phase change material between two adjacent sub-heat exchangers.

[0268] In some possible embodiments, the processor 1010 described above further performs:

[0269] Based on the setting mode of the above-mentioned HVAC system, the first weight corresponding to the first temperature sensor and the second weight corresponding to the second temperature sensor are determined, and the sum of the first weight and the second weight is 1.

[0270] The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight.

[0271] The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature described above.

[0272] In some possible embodiments, the formula for calculating the virtual condensation temperature is as follows:

[0273] T x =A×T1+B×T2

[0274] Among them, T x Let A be the virtual condensation temperature, B be the first weight, T1 be the first temperature, and T2 be the second temperature.

[0275] In some possible embodiments, the formula for calculating the target condensation temperature is as follows:

[0276] T cs =T x +ΔT+K

[0277] Among them, T cs For the target condensation temperature mentioned above, T x The virtual condensation temperature is ΔT, which is the difference between the temperature of the heating medium input to the heat source unit and the temperature of the heating medium output in the energy flow path. ΔT is 5 to 10°C, and K is a correction parameter with a value of 0 to 2°C.

[0278] In some possible embodiments, the processor 1010 described above further performs:

[0279] When the above-mentioned HVAC system is set to intelligent mode, the first weight and the second weight are determined based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy flow path.

[0280] In some possible embodiments, a third temperature sensor is provided in the charging flow path. The third temperature sensor is located in the charging flow path between the heat source unit and the heat storage module to detect the temperature of the heating medium output by the heat source unit to the charging flow path.

[0281] In some possible embodiments, when the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the processor 1010 further performs the following:

[0282] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to preset initial weights, and the first weight and the second weight are gradually reduced and gradually increased as the temperature of the heating medium increases.

[0283] If the temperature of the heating medium output by the above heat source unit reaches the above phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0284] The aforementioned preset initial weights are greater than 0 and less than 1.

[0285] In some possible embodiments, the preset initial weight is 0.5.

[0286] In some possible embodiments, when the target temperature is not less than the phase change temperature of the phase change material in the heat storage module, the processor 1010 further performs the following:

[0287] If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0.

[0288] If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases.

[0289] If the temperature of the heating medium output by the heat source unit and the second temperature both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

[0290] In some possible embodiments, the processor 1010 described above further performs:

[0291] When the above-mentioned HVAC system is set to the rapid heating mode, the first weight is determined to be 1 and the second weight is determined to be 0.

[0292] In some possible embodiments, the processor 1010 described above further performs:

[0293] When the above-mentioned HVAC system is set to energy-saving mode, the first weight is determined to be 0 and the second weight is determined to be 1.

[0294] In some possible embodiments, the processor 1010 described above further performs:

[0295] When the target condensing temperature is greater than the current saturated condensing temperature, the compressor frequency of the heat source unit is increased.

[0296] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is reduced.

[0297] In some possible embodiments, the above-described HVAC system further includes:

[0298] Heating unit, wherein the heat source unit is connected to the heating unit via a heating flow path;

[0299] The utilization unit is connected to the heat storage module via an energy release flow path.

[0300] The control valve is used to control the switching of the energy charging path and the heating path. The heating unit is connected in parallel with the heat storage module.

[0301] The processor 1010 further performs the following actions: when the heating unit is supplying heat, controlling the control valve to open the heating flow path so that the heating medium output by the heat source unit flows in the heating flow path; and when the heat storage module is charging, controlling the control valve to open the charging flow path so that the heating medium output by the heat source unit flows in the charging flow path.

[0302] In some possible embodiments, the heat source unit includes a first heat source and a second heat source, wherein the first heat source is a heat pump unit and the second heat source is an auxiliary heat source.

[0303] The processor 1010 further performs the following: when the preset auxiliary heating conditions are met, the second heat source is turned on to heat the heating medium output by the heat source unit.

[0304] In some possible embodiments, the processor 1010 described above further performs:

[0305] When the aforementioned heat storage module is not charged but the aforementioned heating unit is supplying heat, the target condensing temperature is determined based on the heating target temperature of the aforementioned heating unit.

[0306] This application also provides a computer-readable storage medium storing instructions that, when executed on a computer or processor, cause the computer or processor to perform one or more steps in the above embodiments. If the above-described HVAC system operation control method is implemented as a software functional unit and sold or used as an independent product, it can be stored in the aforementioned computer-readable storage medium.

[0307] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in or transmitted through a computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The aforementioned available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital versatile discs (DVDs)), or semiconductor media (e.g., solid-state drives (SSDs)).

[0308] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks. Unless otherwise specified, the technical features of this embodiment and its implementation can be combined arbitrarily.

[0309] The embodiments described above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made to the technical solutions of this application by those skilled in the art without departing from the spirit of this application should fall within the protection scope defined by the claims.

[0310] The foregoing has described specific embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims and specification may be performed in a different order than in the embodiments described in the specification and still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A heating, ventilation, and air conditioning system, comprising: The HVAC system includes: Heat source unit; A heat storage module, the heat storage module having a phase change material and at least one temperature sensor, and the heat source unit being connected to the heat storage module through a charging flow path; The control unit is configured as follows: When the heat storage module is being charged, the target condensation temperature of the heat source unit is determined based on the temperature of the phase change material detected by the at least one temperature sensor. The compressor frequency of the heat source unit is controlled based on the target condensation temperature.

2. The heating system of claim 1, wherein, The at least one temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the other temperature sensors in the charging flow path, and the second temperature sensor is located downstream of the other temperature sensors in the charging flow path.

3. The HVAC system according to claim 2, characterized in that, The temperature sensor is inserted into the phase change material at a preset depth to detect the temperature of the phase change material at the preset depth; wherein, the first temperature sensor is inserted into the phase change material at a first preset depth, the second temperature sensor is inserted into the phase change material at a second preset depth, and the first preset depth is less than the second preset depth.

4. The HVAC system according to claim 2, characterized in that, The heat storage module is equipped with a heat exchange module, which includes multiple sub-heat exchangers. The multiple sub-heat exchangers are arranged in parallel and spaced apart along a first direction, and the phase change material is provided in the gap between two adjacent sub-heat exchangers. The temperature sensor is inserted into the phase change material between two adjacent sub-heat exchangers.

5. The HVAC system according to claim 2, characterized in that, The control unit is configured to: Based on the setting mode of the HVAC system, a first weight corresponding to the first temperature sensor and a second weight corresponding to the second temperature sensor are determined, and the sum of the first weight and the second weight is 1. The virtual condensation temperature of the heat source unit is determined based on the first temperature detected by the first temperature sensor, the first weight, the second temperature detected by the second temperature sensor, and the second weight. The target condensation temperature of the heat source unit is determined based on the virtual condensation temperature.

6. The HVAC system according to claim 5, characterized in that, The formula for calculating the virtual condensation temperature is: T x = A x T1 + B x T2 wherein T x is the virtual condensing temperature, A is the first weight, B is the second weight, T1 is the first temperature, and T2 is the second temperature.

7. The HVAC system according to claim 5, characterized in that, The formula for calculating the target condensation temperature is: T cs = T x + ΔT + K Wherein, T cs is the target condensing temperature, T x is the virtual condensing temperature, ΔT is the difference between the temperature of the heat supply medium input by the heat source unit in the charging flow path and the temperature of the heat supply medium output by the heat source unit, ΔT has a value of 5-10℃, and K is a correction parameter, K has a value of 0-2℃.

8. The HVAC system according to claim 5, characterized in that, The control unit is configured to: When the HVAC system is set to intelligent mode, the first weight and the second weight are determined based on the target temperature of the heat storage module and the temperature of the heating medium output by the heat source unit in the energy charging flow path.

9. The HVAC system according to claim 8, characterized in that, A third temperature sensor is provided in the charging flow path. The third temperature sensor is located in the charging flow path between the heat source unit and the heat storage module to detect the temperature of the heating medium output by the heat source unit to the charging flow path.

10. The HVAC system according to claim 8, characterized in that, When the target temperature is lower than the phase change temperature of the phase change material in the heat storage module, the control unit is configured to: If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight and / or the second weight are set to preset initial weights, and the first weight and the second weight are gradually reduced and gradually increased as the temperature of the heating medium increases. If the temperature of the heating medium output by the heat source unit reaches the phase change temperature, the first weight is set to 0 and the second weight is set to 1. The preset initial weight is greater than 0 and less than 1.

11. The HVAC system according to claim 10, characterized in that, The preset initial weight is 0.

5.

12. The HVAC system according to claim 8, characterized in that, When the target temperature is not less than the phase change temperature of the phase change material in the heat storage module, the control unit is configured to: If the temperature of the heating medium output by the heat source unit is lower than the phase change temperature when the HVAC system is started, the first weight is set to 1 and the second weight is set to 0. If the temperature of the heating medium output by the heat source unit reaches the phase change temperature and the second temperature is less than the phase change temperature, the first weight is gradually reduced and the second weight is gradually increased as the temperature of the heating medium increases. If the temperature of the heating medium output by the heat source unit and the second temperature both reach the phase change temperature, the first weight is set to 0 and the second weight is set to 1.

13. The HVAC system according to claim 5, characterized in that, The control unit is configured to: When the setting mode of the HVAC system is the rapid heating mode, the first weight is determined to be 1 and the second weight is determined to be 0.

14. The HVAC system according to claim 5, characterized in that, The control unit is configured to: When the setting mode of the HVAC system is energy-saving mode, the first weight is determined to be 0 and the second weight is determined to be 1.

15. The HVAC system according to claim 1, characterized in that, The control unit is configured to: When the target condensation temperature is greater than the current saturated condensation temperature, the compressor frequency of the heat source unit is increased. When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is reduced.

16. The HVAC system according to claim 1, characterized in that, The HVAC system also includes: A heating unit, wherein the heat source unit is connected to the heating unit through a heating flow path; The utilization unit is connected to the heat storage module through an energy release flow path; A control valve is provided, wherein the heating unit is connected in parallel with the heat storage module, and the control valve is used to control the switching of the energy charging path and the heating path; The control unit is configured to: when the heating unit is supplying heat, control the control valve to open the heating flow path so that the heating medium output by the heat source unit flows in the heating flow path; and when the heat storage module is charging, control the control valve to open the charging flow path so that the heating medium output by the heat source unit flows in the charging flow path.

17. The HVAC system according to claim 1, characterized in that, The heat source unit includes a first heat source and a second heat source, wherein the first heat source is a heat pump unit and the second heat source is an auxiliary heat source; The control unit is configured to turn on the second heat source when a preset auxiliary heating condition is met, so as to heat the heating medium output by the heat source unit.

18. The HVAC system according to claim 16, characterized in that, The control unit is configured to: When the heat storage module is not being charged but the heating unit is providing heat, the target condensing temperature is determined based on the heating target temperature of the heating unit.

19. A method for controlling the operation of a heating, ventilation, and air conditioning system, characterized in that, Applied to HVAC systems, the HVAC system comprising: Heat source unit; A heat storage module, the heat storage module having a phase change material and at least one temperature sensor, and the heat source unit being connected to the heat storage module through a charging flow path; The method includes: When the heat storage module is being charged, the target condensation temperature of the heat source unit is determined based on the temperature of the phase change material detected by the at least one temperature sensor. The compressor frequency of the heat source unit is controlled based on the target condensation temperature.

20. A computer storage medium, characterized in that, The computer storage medium stores a plurality of instructions adapted for loading by a processor and executing the steps of the method as described in claim 19.

21. An electronic device, characterized in that, include: A processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to execute the steps of the method as described in claim 19.

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