Control method of heating and ventilation equipment and heating and ventilation system

Abstract

The invention discloses a control method and device of heating and ventilation equipment, a storage medium and the heating and ventilation equipment. The control method and device are applied to a heat source unit in a heating and ventilation system, the heating and ventilation system comprises the heat source unit and a phase change energy storage module, the phase change energy storage module is connected with the heat source unit, and the phase change energy storage module internally comprises a phase change material; a first temperature distribution area and a second temperature distribution area of a phase change material are determined, the temperature of the first temperature distribution area is higher than that of the second temperature distribution area, a first temperature corresponding to the first temperature distribution area is obtained, and a second temperature corresponding to the second temperature distribution area is obtained; and controlling the working state of the heat source unit according to the first temperature, or controlling the working state of the heat source unit according to the second temperature. The energy state of the heating and ventilation system can be determined according to the temperature distribution characteristics of the phase change material in the heating and ventilation system, so that the working state of the heat source unit is controlled in a targeted manner, and the accuracy of controlling the working state of the heating and ventilation equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of HVAC technology, and in particular to a control method for HVAC equipment and a HVAC system. Background Art

[0002] Phase change energy storage technology is an energy storage and utilization technology based on the phase change characteristics of phase change materials, that is, phase change materials can absorb or release a large amount of heat when they change between different states (such as solid, liquid, and gas), thereby realizing energy storage and release. Therefore, phase change energy storage technology is introduced into the HVAC system to store and utilize the heat generated by the heat pump in the HVAC system.

[0003] However, in the related art, the phase change materials in the HVAC system cannot accurately control the working state of the HVAC equipment when storing and releasing energy. Summary of the invention

[0004] The embodiments of the present application provide a control method, device, storage medium and HVAC equipment for HVAC equipment, which can improve the accuracy of controlling the working state of the HVAC equipment.

[0005] In a first aspect, an embodiment of the present application provides a control method for a HVAC device, which is applied to a heat source unit in a HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material, including:

[0006] Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0007] Acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region;

[0008] The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

[0009] In a possible implementation, a plurality of first temperature monitoring points are set in the first temperature distribution area, and a first temperature corresponding to the first temperature distribution area is obtained, including:

[0010] Acquire a plurality of first temperature values ​​monitored at a plurality of first temperature monitoring points;

[0011] taking the highest temperature value among the plurality of first temperature values ​​as the first temperature;

[0012] Alternatively, an average temperature value of a plurality of first temperature values ​​is taken as the first temperature.

[0013] In a possible implementation, the working state includes a startup state, and controlling the working state of the heat source unit according to the first temperature includes:

[0014] Determining whether the first temperature is less than a preset first temperature;

[0015] If yes, the working state of the heat source unit is controlled to switch to the on state.

[0016] In a possible implementation, a plurality of second temperature monitoring points are set in the second temperature distribution area, and the second temperature corresponding to the second temperature distribution area is obtained, including:

[0017] Acquiring a plurality of second temperature values ​​monitored at a plurality of second temperature monitoring points;

[0018] taking the lowest temperature value among the plurality of second temperature values ​​as the second temperature;

[0019] Alternatively, an average temperature value of a plurality of second temperature values ​​is taken as the second temperature.

[0020] In a possible implementation, the working state includes a shutdown state, and controlling the working state of the heat source unit according to the second temperature includes:

[0021] Determining whether the second temperature is greater than a preset second temperature;

[0022] If so, the working state of the heat source unit is controlled to switch to the shutdown state.

[0023] In a possible implementation, the first temperature distribution area and the second temperature distribution area are set based on the temperature gradient distribution in the charging flow path direction in the phase change energy storage module.

[0024] In a possible implementation, determining a first temperature distribution region and a second temperature distribution region of a phase change material includes:

[0025] Dividing the phase change material into a plurality of temperature distribution regions according to the flow direction of the heat medium;

[0026] The area with the highest corresponding temperature in the plurality of temperature distribution areas is taken as the first temperature distribution area;

[0027] The region with the lowest corresponding temperature among the plurality of temperature distribution regions is taken as the second temperature distribution region.

[0028] In a possible implementation, at least one third temperature monitoring point is set in the first temperature distribution area, and the method further includes:

[0029] Acquire a first corresponding relationship between a third temperature value monitored by a third temperature monitoring point and a heat release degree of the phase change energy storage module;

[0030] Controlling the working state of the heat source unit according to the first temperature includes:

[0031] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat release state;

[0032] If the energy change state of the phase change energy storage module is a heat release state, obtaining a target third temperature value monitored by the third temperature monitoring point, and using the target third temperature value as the first temperature;

[0033] Determining a target heat release degree of the phase change energy storage module according to the target third temperature value and the first corresponding relationship;

[0034] If the target heat release degree is greater than the preset heat release degree, the working state of the heat source unit is controlled to switch to the on state.

[0035] In a possible implementation, when the number of the third temperature monitoring points is greater than or equal to two, the third temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium.

[0036] In a possible implementation, at least one fourth temperature monitoring point is set in the second temperature distribution area, and the method further includes:

[0037] Acquire a second corresponding relationship between a fourth temperature value monitored by a fourth temperature monitoring point and a heat storage degree of the phase change energy storage module;

[0038] Controlling the working state of the heat source unit according to the second temperature includes:

[0039] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat storage state;

[0040] If the energy change state of the phase change energy storage module is a heat storage state, obtaining a target fourth temperature value monitored by the fourth temperature monitoring point, and using the target fourth temperature value as the second temperature;

[0041] Determining a target heat storage degree of the phase change energy storage module according to the target fourth temperature value and the second corresponding relationship;

[0042] If the target heat storage degree is greater than the preset heat storage degree, the working state of the heat source unit is controlled to switch to the shutdown state.

[0043] In a possible implementation, controlling the working state of the heat source unit according to the first temperature, or controlling the working state of the heat source unit according to the second temperature, includes:

[0044] The compressor frequency of the heat source unit is determined according to the first temperature, or the compressor frequency of the heat source unit is determined according to the second temperature.

[0045] In a possible implementation, determining the compressor frequency of the heat source unit according to the first temperature, or determining the compressor frequency of the heat source unit according to the second temperature, includes:

[0046] determining a target condensing temperature of the heat source unit according to the first temperature, or determining a target condensing temperature of the heat source unit according to the second temperature;

[0047] The compressor frequency of the heat source unit is determined according to the target condensing temperature.

[0048] In a possible implementation, determining the target condensing temperature of the heat source unit according to the first temperature, or determining the target condensing temperature of the heat source unit according to the second temperature, includes:

[0049] determining a virtual condensing temperature of the heat source unit according to the first temperature, or determining a virtual condensing temperature of the heat source unit according to the second temperature;

[0050] The target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

[0051] In a possible implementation, determining the virtual condensing temperature of the heat source unit according to the first temperature includes:

[0052] When the target temperature of the phase change energy storage module is not less than the phase change temperature of the phase change material, and when the HVAC equipment is started, the temperature of the heating medium output by the heat source unit is less than the phase change temperature, the first temperature is used as the virtual condensation temperature;

[0053] or,

[0054] When the setting mode of the HVAC equipment is the rapid heating mode, the first temperature is used as the virtual condensing temperature.

[0055] In a possible implementation, determining the virtual condensing temperature of the heat source unit according to the second temperature includes:

[0056] When the target temperature of the phase change energy storage module is not less than the phase change temperature, and both the heating medium temperature and the second temperature reach the phase change temperature, the second temperature is used as the virtual condensation temperature;

[0057] or,

[0058] When the setting mode of the HVAC equipment is the energy-saving mode, the second temperature is used as the virtual condensing temperature.

[0059] In a possible implementation, determining the target condensing temperature of the heat source unit according to the virtual condensing temperature includes:

[0060] The formula for calculating the target condensing temperature based on the virtual condensing temperature is as follows:

[0061] T cs =T x+ΔT+K

[0062] Among them, T cs is the target condensation temperature, T x is the virtual condensing temperature, ΔT is the difference between the temperature of the heating medium input by the heat source unit in the charging flow path in the phase change energy storage module and the temperature of the heating medium output, ΔT is 5-10°C, K is the correction parameter, and K is 0-2°C.

[0063] In a possible implementation, determining the compressor frequency of the heat source unit according to the target condensing temperature includes:

[0064] When the target condensing temperature is greater than the current saturated condensing temperature of the heat source unit, controlling the compressor frequency of the heat source unit to increase;

[0065] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is controlled to decrease.

[0066] In a possible implementation, controlling the working state of the heat source unit according to the first temperature includes:

[0067] When the first temperature is greater than or equal to the first preset control temperature, a high temperature protection mode is executed on the phase change module through the heat source unit;

[0068] When the first temperature is lower than the second preset control temperature, the phase change energy storage module exits the high temperature protection mode through the heat source unit;

[0069] The first preset control temperature is the difference between the failure temperature of the phase change material and the first temperature coefficient, the second preset control temperature is the difference between the failure temperature and the second temperature coefficient, and the first temperature coefficient is smaller than the second temperature coefficient.

[0070] In a possible implementation, a high temperature protection mode is performed on the phase change module by a heat source unit, including:

[0071] The heat source unit is controlled to supply water and cool the phase change energy storage module, and the heat source unit is controlled to reduce the frequency.

[0072] In a possible implementation, the heat source unit includes a water pump and a compressor, and controlling the heat source unit to supply water and cool the phase change energy storage module, and controlling the heat source unit to reduce the frequency, includes:

[0073] The water pump is controlled based on the maximum water output to supply water and cool the phase change energy storage module, and the compressor is frequency-reduced based on a preset cycle and a preset adjustment frequency.

[0074] In a second aspect, an embodiment of the present application provides a phase change energy storage module, comprising:

[0075] A shell, wherein a heat exchange module and a phase change material are arranged in the shell, the heat exchange module is buried in the phase change material, and the heat exchange module is thermally connected to the phase change material;

[0076] The temperature sensing component is inserted into the phase change material to a preset depth, wherein the temperature sensing component is used to monitor the temperature at a temperature monitoring point set in the phase change energy storage module.

[0077] In a possible implementation, the temperature sensing component includes:

[0078] A support plate is arranged on the heat exchange module, and the support plate has an assembly hole;

[0079] A blind tube is inserted into the assembly hole and is used to extend into the phase change material, and a positioning structure is provided on the inner wall surface of the blind tube;

[0080] The temperature sensing detector comprises a temperature sensing probe arranged inside the blind tube, and the temperature sensing probe cooperates with the positioning structure to limit the preset depth of the temperature sensing probe inserted into the phase change material.

[0081] In a possible implementation, the positioning structure includes a positioning protrusion disposed on the inner wall surface of the blind tube, and the temperature sensing probe is engaged with or abuts against the positioning protrusion.

[0082] In a possible implementation, the positioning protrusions are arranged in a circle along the circumference of the blind tube; or,

[0083] A plurality of positioning protrusions are arranged in sequence and at intervals along the circumference of the blind tube.

[0084] In a possible implementation, the temperature detector also includes a sensor wire body, a portion of which is inserted into the blind tube and connected to the temperature sensing probe, and an outer wall surface of the sensor wire body is provided with an in-position indicator. When the temperature sensing probe cooperates with the positioning structure, the in-position indicator is located at the pipe mouth of the blind tube.

[0085] In a possible implementation, the temperature sensing component further includes heat transfer oil, the heat transfer oil is arranged inside the blind pipe, and the heat transfer oil immerses the temperature sensing probe.

[0086] In a third aspect, an embodiment of the present application further provides a control device for a HVAC device, which is applied to a heat source unit in a HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material, including:

[0087] A determination unit, configured to determine a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0088] An acquisition unit, used to acquire a first temperature corresponding to the first temperature distribution area, and acquire a second temperature corresponding to the second temperature distribution area;

[0089] The control unit is used to control the working state of the heat source unit according to the first temperature, or to control the working state of the heat source unit according to the second temperature.

[0090] In a fourth aspect, an embodiment of the present application further provides a HVAC system, including:

[0091] A heat source unit, wherein the heat source unit includes a controller;

[0092] A phase change energy storage module, the phase change energy storage module is connected to the heat source unit, and the phase change energy storage module includes a phase change material;

[0093] Wherein: the above controller is used for:

[0094] Determine a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0095] Acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region;

[0096] The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

[0097] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program runs on a computer, the computer executes a control method for HVAC equipment as provided in any embodiment of the present application.

[0098] In a sixth aspect, an embodiment of the present application further provides a HVAC device, including a processor and a memory, the memory having a computer program, and the processor calls the computer program to execute a control method for the HVAC device as provided in any embodiment of the present application.

[0099] The technical solution provided in the embodiment of the present application is applied to the heat source unit in the HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material. By determining the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the temperature of the first temperature distribution area is greater than the temperature of the second temperature distribution area, the first temperature corresponding to the first temperature distribution area is obtained, and the second temperature corresponding to the second temperature distribution area is obtained, and the working state of the heat source unit is controlled according to the first temperature, or the working state of the heat source unit is controlled according to the second temperature. The present application deeply explores the temperature distribution characteristics of the phase change material, and accurately captures the energy state of whether the phase change material in the HVAC system is in the state of storing energy or releasing energy through the temperature conditions of the first temperature distribution area and the second temperature distribution area in the phase change material, and controls the working state of the heat source unit in a targeted manner according to the corresponding energy state, so as to realize the accurate perception and intelligent control of the energy state of the HVAC system, thereby improving the accuracy of controlling the working state of the HVAC equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0101] Figure 1 A structural schematic diagram of a HVAC system of a HVAC equipment control method provided in an embodiment of the present application.

[0102] Figure 2 A first flow chart of a method for controlling HVAC equipment provided in an embodiment of the present application.

[0103] Figure 3 A structural diagram of a phase change energy storage module provided in an embodiment of the present application.

[0104] Figure 4 Based on Figure 3 The phase change characteristic diagram of the phase change material of the phase change energy storage module provided in the figure is when the fins are vertical.

[0105] Figure 5 Based on Figure 4 Temperature variation diagram of the phase change material when the phase change energy storage module is in the heat storage stage and the fins are vertical.

[0106] Figure 6 Based on Figure 4 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat release stage when the fins of the phase change energy storage module are vertical.

[0107] Figure 7 Based on Figure 3 The phase change characteristic diagram of the phase change material of the phase change energy storage module provided in the fin horizontal condition.

[0108] Figure 8 Based on Figure 7 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat storage stage is shown in the figure below: When the fins of the phase change energy storage module are horizontal, the temperature change diagram of the phase change material when the phase change energy storage module is in the heat storage stage.

[0109] Fig. 9 Based on Figure 7 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat release stage is shown in the figure below: When the fins of the phase change energy storage module are horizontal, the temperature change diagram of the phase change material when the phase change energy storage module is in the heat release stage.

[0110] Fig.10 A schematic diagram of the distribution of temperature monitoring points provided in a phase change energy storage module provided in an embodiment of the present application.

[0111] Fig.11 Based on Fig.10 The distribution of temperature monitoring points provided in the figure is a distribution characteristic diagram of the phase change material temperature of the phase change energy storage module when it is in the heat storage state.

[0112] Fig.12 Based on Fig.10 The distribution of temperature monitoring points provided in the diagram is a distribution characteristic diagram of the temperature of the phase change material of the phase change energy storage module monitored when it is in the heat release state.

[0113] Fig.13 A second flow chart of the method for controlling HVAC equipment provided in an embodiment of the present application.

[0114] Fig.14 A third flow chart of the method for controlling HVAC equipment provided in an embodiment of the present application.

[0115] Fig.15 A fourth flow chart of the method for controlling HVAC equipment provided in an embodiment of the present application.

[0116] Fig.16 A schematic diagram of the structure of a heat storage device provided in an embodiment of the present application, in which a temperature sensing component is provided;

[0117] Fig.17 A schematic structural diagram of a heat storage device provided in an embodiment of the present application having a heat exchange module therein;

[0118] Fig.18 A schematic structural diagram of a heat exchange module from a first perspective provided in an embodiment of the present application;

[0119] Fig.19A schematic diagram of the structure of a temperature sensing component provided in an embodiment of the present application;

[0120] Fig. 20 for Figure 4 Schematic diagram of the cross-sectional structure at BB in the middle;

[0121] Fig.21 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0122] Fig. 22 for Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0123] Fig.23 A schematic diagram of the structure of a control device for HVAC equipment provided in an embodiment of the present application.

[0124] Fig.24 A first structural schematic diagram of the HVAC equipment provided in an embodiment of the present application.

[0125] Fig.25 A second structural schematic diagram of the HVAC equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0126] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0127] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0128] Phase change energy storage technology is an energy storage and utilization technology based on the phase change characteristics of phase change materials, that is, phase change materials can absorb or release a large amount of heat when they change between different states (such as solid, liquid, and gas), thereby realizing energy storage and release. Therefore, phase change energy storage technology is introduced into the HVAC system to store and utilize the heat generated by the heat pump in the HVAC system.

[0129] However, in the related art, the phase change materials in the HVAC system cannot accurately control the working state of the HVAC equipment when storing and releasing energy.

[0130] In order to solve the problem that the working state of the HVAC equipment cannot be accurately controlled in the above-mentioned HVAC system, an embodiment of the present application provides a control method for HVAC equipment. The executor of the control method for HVAC equipment can be the control device of the HVAC equipment provided in the embodiment of the present application, or the HVAC equipment integrating the control device of the HVAC equipment, wherein the control device of the HVAC equipment can be implemented in hardware or software.

[0131] Please refer to the following Figure 1 An embodiment of the present application provides a HVAC system, wherein the HVAC system 800, a heat source unit 821, a phase change energy storage module 831, a charging inlet 841, a charging outlet 842, a discharging outlet 851, an discharging inlet 852, a charging flow path 861, and a discharging flow path 862. The HVAC system 800 provided in the embodiment of the present application includes a heat source unit 821 and a phase change energy storage module 831. The phase change energy storage module 831 is connected to the heat source unit 821. A plurality of charging flow paths 861 and a plurality of discharging flow paths 862 are arranged in the phase change energy storage module 831. The heat source unit 821 can be connected to the charging flow path 861 through a charging inlet 841 and a charging outlet 842. The hot fluid in the heat source unit 821 can flow into the charging flow path 861. The charging flow path 861 can transfer heat to the phase change material in the phase change energy storage module 831. After cold water flows into the discharging flow path 862 through the discharging inlet 852, it can absorb the heat of the phase change material. After the cold water is heated into hot water, it can flow out through the discharging outlet 851 for use by users. The HVAC system 800 provided in the present application can provide users with clean hot water without setting up a water tank to store hot water.

[0132] Specifically, in the HVAC system 800 provided in the embodiment of the present application, the heat source unit 821 includes a controller, wherein the controller is used to:

[0133] Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0134] Acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region;

[0135] The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

[0136] Next, see Figure 2 , Figure 2The first flow diagram of the control method of the HVAC equipment provided in the embodiment of the present application. The control method of the HVAC equipment provided in the embodiment of the present application is applied to the heat source unit in the HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material. The specific process of the method can be as follows:

[0137] S110, determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region.

[0138] It should be noted that the temperature distribution of the phase change material in the phase change energy storage module is uneven. Specifically, inside the phase change energy storage module, a temperature gradient will be formed along the direction of the charging flow path (i.e., the path of energy flow or transfer), and the temperature value corresponding to the temperature gradient decreases along the direction of the charging flow path. Therefore, in this application, the phase change material is divided into multiple temperature distribution areas according to its temperature gradient (i.e., temperature change). That is, the first temperature distribution area and the second temperature distribution area are set based on the temperature gradient distribution in the direction of the charging flow path in the phase change energy storage module.

[0139] In one possible implementation, in an embodiment of the present application, when determining the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the phase change material is divided into multiple temperature distribution areas according to the flow direction of the heat medium; the area with the highest temperature among the multiple temperature distribution areas is taken as the first temperature distribution area; and the area with the lowest temperature among the multiple temperature distribution areas is taken as the second temperature distribution area.

[0140] That is, the first temperature distribution region is a region corresponding to the highest temperature gradient in the phase change material, and the second temperature distribution region is a region corresponding to the lowest temperature in the phase change material.

[0141] In order to illustrate the situation where there is a temperature gradient in the phase change material provided in the embodiments of the present application, please refer to the following Figures 3 to 6 This part uses the phase change energy storage module with the fins vertical to illustrate the temperature distribution in the phase change material, as follows:

[0142] Please refer to Figure 3 , Figure 3A structural diagram of a phase change energy storage module provided in an embodiment of the present application. The phase change energy storage module is mainly composed of 1 to 5 components, of which 1 is a heat exchanger, 2 is a phase change material, 3 and 4 are temperature sensors, corresponding to the high temperature zone T5 and the low temperature zone T5_2 respectively, and 5 is a packaging shell. T5 is set at 0.95h0<h<h0 (with the end close to the inlet of the heat release medium as the starting point and the end close to the outlet of the heat release medium as the end point, and h0 is the height of the phase change material), and T5_2 is set at 0.05h0<h<0.15h0.

[0143] It should be noted that the first temperature distribution area in the present application is obtained based on the high temperature zone, and the second temperature distribution area is obtained based on the low temperature zone. For example, the high temperature zone can be used as the first temperature distribution area, and the low temperature zone can be used as the second temperature distribution area. Or, for example, the high temperature zone can be further divided into multiple high temperature sub-areas according to the temperature distribution, and the high temperature sub-area with the highest corresponding distribution temperature can be used as the first temperature distribution area. The low temperature zone can be further divided into multiple low temperature sub-areas according to the temperature distribution, and the low temperature sub-area with the lowest corresponding distribution temperature can be used as the second temperature distribution area.

[0144] Please refer to Figure 4 , Figure 4 Based on Figure 3 The phase change characteristic diagram of the phase change material of the phase change energy storage module provided in the case of vertical fins shows the phase change energy storage module in the heat storage stage and the heat release stage when the fins are vertical. Specifically:

[0145] (1) When the phase change energy storage module is in the heat storage stage, the high-temperature fluid flows from top to bottom along the pipeline. The phase change material in the high-temperature zone first changes from solid to liquid. As the heat storage process proceeds, the high-temperature zone moves along the direction of the fluid, and the phase change energy storage module is in a solid-liquid two-phase state for a long time. However, since most of the heat of the high-temperature fluid is absorbed by the phase change material, the temperature of the second half of the fluid drops sharply, which ultimately makes it difficult for the phase change material in the second half to completely change phase during the heat storage process, so it is defined as a low-temperature zone.

[0146] Please refer to Figure 5 , Figure 5 Based on Figure 4 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat storage stage when the fins are vertical.

[0147] ① The phase change period of the phase change material during the heat storage process accounts for about 80% of the total heat storage time;

[0148] ② When the heat storage reaches 90% of the total, the temperature of the phase change material in the 0≤h≤0.15h0 segment (point A, temperature points 17-19) is lower than the phase change temperature, and the high area is a low temperature zone; the temperature of the phase change material in the 0.15h0<h≤h0 segment is higher than the phase change temperature.

[0149] ③T5_2 is at h>0.15h0, and the temperature of the phase change material reaches the set value ahead of time, resulting in the premature end of heat storage and a decrease in heat storage;

[0150] ④T5_2 is at h<0.05h0, the high-temperature medium temperature at the end of the heat exchanger is low, and the phase change material temperature at 0~0.05h0 is lower than the phase change temperature for a long time, resulting in the risk of overcharging or even overheating of the phase change energy storage module;

[0151] ⑤T5_2 should be placed in the height range of 0.05~0.15h0.

[0152] (2) When the phase-change energy storage module is in the heat release stage, the low-temperature fluid flows from bottom to top along the pipeline, and the phase-change material in the low-temperature zone changes from liquid to solid first. As the heat release process proceeds, the low-temperature zone moves along the direction of the fluid, and the phase-change energy storage module is in a solid-liquid two-phase state for a long time. However, because the low-temperature fluid absorbs the heat of the phase-change material, the temperature of the second half of the fluid rises sharply, which ultimately causes the second half of the phase-change material to remain at a higher temperature during the heat release process, so it is defined as a high-temperature zone.

[0153] Please refer to Figure 6 , Figure 6 Based on Figure 4 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat release stage when the fins are vertical.

[0154] ① The phase change temperature in the heat release process accounts for more than 95% of the total heat release time;

[0155] ② When the heat release reaches 90% of the total, the temperature of the phase change material in the 0.95h0<h≤h0 segment (temperature point 1) is greater than the phase change temperature, and this area is a high temperature zone; the temperature of the phase change material in 0≤h≤0.95h0 is lower than the phase change temperature.

[0156] ③T5 position is at h>h0, and the monitored temperature is the air temperature. Due to the low thermal conductivity of air, the temperature of the phase change material may exceed the limit, but the temperature of T5 is still within the protection range;

[0157] ④The T5 position is at h<0.95h0. The position is too low, resulting in insufficient heat release and large residual heat.

[0158] ⑤T5 should be placed in the height range of 0.95h0~h0.

[0159] Among them, the definition and feedback of high temperature zone and low temperature zone will affect the judgment of heat storage and heat release degree of phase change energy storage module.

[0160] It should be noted that the "fluid" in the "high-temperature fluid" and "low-temperature fluid" mentioned here refers to the medium that needs to be heated in the pipeline of the phase change energy storage module. For example, when hot water is supplied through the phase change energy storage module, the fluid can be water, such as municipal tap water.

[0161] Next, in order to illustrate the situation where there is a temperature gradient in the phase change material provided in the embodiment of the present application, please refer to the following Figure 3 ,as well as Figures 7 to 9 This part describes the temperature distribution of the phase change material in the phase change energy storage module when the fins are horizontal, as follows:

[0162] Please refer to Figure 7 , based on Figure 3 The phase change characteristic diagram of the phase change material of the phase change energy storage module provided in the fin horizontal condition shows the phase change energy storage module in the heat storage stage and the heat release stage when the fin is horizontal, specifically:

[0163] (1) When the phase change energy storage module is in the heat storage stage, the high-temperature fluid flows from right to left along the pipeline. The phase change material in the high-temperature zone first changes from solid to liquid. As the heat storage process proceeds, the high-temperature zone moves along the direction of the fluid, and the phase change energy storage module is in a solid-liquid two-phase state for a long time. However, since most of the heat of the high-temperature fluid is absorbed by the phase change material, the temperature of the second half of the fluid drops sharply, which ultimately makes it difficult for the phase change material in the second half to completely change phase during the heat storage process, so it is defined as a low-temperature zone.

[0164] Please refer to Figure 8 , Figure 8 Based on Figure 7 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat storage stage when the fins are horizontal.

[0165] ① The phase change period of the phase change material during the heat storage process accounts for about 80% of the total heat storage time;

[0166] ② When the heat storage reaches 95% of the total, the temperature of the phase change material in the 0≤h≤0.15h0 segment (temperature points 1-3) is lower than the phase change temperature, and this area is a low temperature zone; the temperature of the phase change material in the 0.9h0<h≤h0 segment is higher than the phase change temperature.

[0167] ③ At the T5_2 position, h>0.15h0, the material reaches the set temperature ahead of time, causing the heat storage to end early and the heat storage amount to decrease.

[0168] (2) When the phase-change energy storage module is in the heat release stage, the low-temperature fluid flows from left to right along the pipeline, and the phase-change material in the low-temperature zone first changes from liquid to solid. As the heat release process proceeds, the low-temperature zone moves along the direction of the fluid, and the phase-change energy storage module is in a solid-liquid two-phase state for a long time. However, because the low-temperature fluid absorbs the heat of the phase-change material, the temperature of the second half of the fluid rises sharply, which ultimately causes the second half of the phase-change material to remain at a higher temperature during the heat release process, so it is defined as a high-temperature zone.

[0169] Please refer to Fig. 9 , Fig. 9 Based on Figure 7 The temperature change diagram of the phase change material when the phase change energy storage module is in the heat release stage when the fins are horizontal.

[0170] ① The phase change temperature in the heat release process accounts for more than 95% of the total heat release time;

[0171] ② When the outlet water temperature is less than 40°C, the temperature of the phase change material in the 0.90h0<h≤h0 segment (temperature point 1) is greater than the phase change temperature, and this area is a high temperature zone; the temperature of the phase change material in 0≤h≤0.90h0 is less than the phase change temperature.

[0172] ③The T5 position is at h<0.90h0. The position is too low, resulting in insufficient heat release and large residual heat.

[0173] ④T5 should be placed in the height range of 0.90h0~h0.

[0174] Among them, the definition and feedback of high temperature zone and low temperature zone will affect the judgment of heat storage and heat release degree of phase change energy storage module.

[0175] It should be noted that the "fluid" in the "high-temperature fluid" and "low-temperature fluid" mentioned here refers to the medium that needs to be heated in the pipeline of the phase change energy storage module. For example, when hot water is supplied through the phase change energy storage module, the fluid can be water, such as municipal tap water.

[0176] In addition, in one possible implementation, please refer to Fig.10 , Fig.10 A schematic diagram of the distribution of temperature monitoring points provided in a phase change energy storage module provided in an embodiment of the present application. Fig.10 The diagram in the figure shows the setting of the internal temperature monitoring points of the phase change energy storage module when the fins are vertical.

[0177] ① The tube-fin heat exchanger is placed in such a way that the tube is parallel to the bottom of the inner tank and the fin is perpendicular to the bottom;

[0178] ②The heat release and heat storage flow paths are arranged in parallel and spaced apart, and countercurrent heat exchange is adopted;

[0179] ③ During the heat storage process of the phase change energy storage module, the fluid flows from top to bottom, and during the heat release process, the fluid flows from bottom to top;

[0180] ④ Due to the flow direction of the heat transfer medium of the phase change energy storage module, the module temperature is distributed longitudinally;

[0181] In order to monitor the temperature of the internal materials of the phase change energy storage module, 9 temperature monitoring points are set from bottom to top along the same normal line. Each temperature monitoring point corresponds to a temperature sensor. The temperature sensors are numbered 1 to 9 from top to bottom and are placed at 90 to 10% of the height of the phase change energy storage module. It can be understood that 9 temperature sensors are evenly distributed in the phase change energy storage module to detect the temperature of the phase change materials corresponding to different heights.

[0182] It should be noted that the 9 temperature monitoring points set here are only for example. In actual situations, other numbers of temperature monitoring points can be set according to actual scenarios, and no specific limitation is made here.

[0183] For further information, please refer to Fig.11 , Fig.11 Based on Fig.10 The distribution of temperature monitoring points provided in the figure shows the distribution characteristic diagram of the temperature of the phase change material of the phase change energy storage module when it is in the heat storage state. Fig.11 Indicated in Fig.10 The temperature distribution of the phase change material at the 9 temperature monitoring points set when the phase change energy storage module is in the heat storage stage.

[0184] And refer to Fig.12 , Fig.12 Based on Fig.10 The distribution of temperature monitoring points provided in the figure shows the distribution characteristic diagram of the temperature of the phase change material of the phase change energy storage module when it is in the heat release state. Fig.12 Indicated in Fig.10 The temperature distribution of the phase change material at the 9 temperature monitoring points set when the phase change energy storage module is in the heat release stage.

[0185] S120, obtaining a first temperature corresponding to the first temperature distribution region, and obtaining a second temperature corresponding to the second temperature distribution region.

[0186] For example, multiple first temperature monitoring points can be set in the first temperature distribution area. When obtaining the first temperature corresponding to the first temperature distribution area, multiple first temperature values ​​monitored at the multiple first temperature monitoring points can be obtained, and the highest temperature value among the multiple first temperature values ​​can be taken as the first temperature; or, the average temperature value of the multiple first temperature values ​​can be taken as the first temperature.

[0187] It should be noted that phase change material is a material that can absorb or release heat when the temperature changes. Its performance is greatly affected by the phase change temperature. When the temperature of the phase change material is particularly high, it will have a certain impact on the performance of the phase change energy storage module. Here, the highest temperature value detected in the first temperature distribution area is used as the temperature corresponding to the first temperature distribution area, which can facilitate relevant personnel to monitor the working conditions of the phase change energy storage module, thereby more accurately controlling the working state of the heat source unit.

[0188] In addition, it should be noted that since the temperature distribution of the phase change material in the phase change energy storage module is different, the average temperature value among the multiple first temperature values ​​is used as the temperature corresponding to the first temperature distribution area, which allows relevant personnel to grasp the temperature changes in the first temperature distribution area as a whole, thereby more accurately controlling the working state of the heat source unit.

[0189] For example, multiple second temperature monitoring points can be set in the second temperature distribution area. When obtaining the second temperature corresponding to the second temperature distribution area, multiple second temperature values ​​monitored at the multiple second temperature monitoring points are obtained; the lowest temperature value among the multiple second temperature values ​​is taken as the second temperature; or, the average temperature value of the multiple second temperature values ​​is taken as the second temperature.

[0190] It should be noted that when the temperature of the phase change material is particularly low, it will also have a certain impact on the performance of the phase change energy storage module. Here, the lowest temperature value detected in the second temperature distribution area is used as the temperature corresponding to the second temperature distribution area, which can facilitate relevant personnel to monitor the working conditions of the phase change energy storage module, thereby more accurately controlling the working state of the heat source unit.

[0191] In addition, it should be noted that since the temperature distribution of the phase change material in the phase change energy storage module is different, the average temperature value among the multiple second temperature values ​​is used as the temperature corresponding to the second temperature distribution area, which allows relevant personnel to grasp the temperature changes in the second temperature distribution area as a whole, thereby more accurately controlling the working state of the heat source unit.

[0192] S130: Control the working state of the heat source unit according to the first temperature, or control the working state of the heat source unit according to the second temperature.

[0193] In the embodiment of the present application, after obtaining the first temperature corresponding to the first temperature distribution area and obtaining the second temperature corresponding to the second temperature distribution area, the working state of the heat source unit is controlled according to the first temperature or the second temperature.

[0194] For example, the working state of the heat source unit may be a power-on state, a power-off state, etc. The power-on state or the power-off state of the heat source unit may be controlled according to the first temperature and the second temperature monitored in the phase change energy storage module.

[0195] In specific implementation, the present application is not limited by the execution order of the various steps described. If no conflict occurs, some steps can be performed in other orders or simultaneously.

[0196] As can be seen from the above, the control method of the HVAC equipment provided in the embodiment of the present application is applied to the heat source unit in the HVAC system, the HVAC system includes a heat source unit and a phase change energy storage module, the phase change energy storage module is connected to the heat source unit, and the phase change energy storage module includes a phase change material, by determining the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the temperature of the first temperature distribution area is greater than the temperature of the second temperature distribution area, the first temperature corresponding to the first temperature distribution area is obtained, and the second temperature corresponding to the second temperature distribution area is obtained, and the working state of the heat source unit is controlled according to the first temperature, or the working state of the heat source unit is controlled according to the second temperature. The present application deeply explores the temperature distribution characteristics of the phase change material, and accurately captures whether the phase change material in the HVAC system is in an energy state of storing energy or releasing energy through the temperature conditions of the first temperature distribution area and the second temperature distribution area in the phase change material, and controls the working state of the heat source unit in a targeted manner according to the corresponding energy state, so as to realize accurate perception and intelligent control of the energy state of the HVAC system, thereby improving the accuracy of controlling the working state of the HVAC equipment.

[0197] The method described in the above embodiments is further described in detail below with examples.

[0198] Next, see Fig.13 , Fig.13 A second flow diagram of the control method of the HVAC equipment provided in the embodiment of the present application. The control method of the HVAC equipment provided in the embodiment of the present application is applied to the heat source unit in the HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material. The specific process of the method can be as follows:

[0199] S210, determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region.

[0200] Specifically, S210 is consistent with S110 and will not be described in detail here.

[0201] S220: Obtain a first temperature corresponding to the first temperature distribution region, and obtain a second temperature corresponding to the second temperature distribution region.

[0202] Specifically, S220 is consistent with S120 and will not be repeated here.

[0203] S230: Determine whether the first temperature is less than the preset first temperature. If so, go to step S240.

[0204] The preset first temperature may be set by the first temperature value of the first temperature distribution area when the phase change energy storage module needs to be supplied with energy in an actual scenario.

[0205] S240, controlling the working state of the heat source unit to switch to the on state.

[0206] In the present application, when the first temperature is lower than the preset first temperature, it indicates that the phase change energy storage module needs to be supplied with energy. At this time, the working state of the heat source unit is controlled to switch to the on state so that the heat source unit supplies energy to the phase change energy storage module.

[0207] In one possible implementation, at least one third temperature monitoring point can be set in the first temperature distribution area. By obtaining the first corresponding relationship between the third temperature value monitored by the third temperature monitoring point and the heat release degree of the phase change energy storage module, when the working state of the heat source unit is controlled according to the first temperature, the energy change state of the phase change energy storage module is determined, and the energy change state includes the heat release state. If the energy change state of the phase change energy storage module is the heat release state, the target third temperature value monitored by the third temperature monitoring point is obtained, and the target third temperature value is used as the first temperature. The target heat release degree of the phase change energy storage module is determined according to the target third temperature value and the first corresponding relationship. If the target heat release degree is greater than the preset heat release degree, the working state of the heat source unit is controlled to switch to the power-on state.

[0208] Specifically, when determining the energy change state of the phase change energy storage module, the energy change state can be determined based on the increase or decrease of the temperature value monitored by the third temperature monitoring point. For example, the temperature of the third temperature monitoring point can be collected every first preset time period to determine the change trend of the multiple corresponding temperature values ​​collected. If it is an upward trend, it means that the current energy change state of the phase change energy storage module is a heat storage state. If it is a downward trend, it means that the current energy change state of the phase change energy storage module is a heat release state.

[0209] Among them, the above-mentioned first preset duration can be set by those skilled in the art as needed. For example, the first preset duration can be 10 seconds, that is, the third temperature monitoring point collects a temperature value every 10 seconds. For another example, the first preset duration can be 15 seconds, that is, the third temperature monitoring point collects a temperature value every 15 seconds. Preferably, since the phase change material undergoes a series of physical or chemical changes when the temperature changes, these changes require a certain amount of time to fully unfold, so that the temperature monitoring point needs to go through a time window to accurately capture the change in the temperature of the phase change material. The time of this time window is not fixed, and can be set or adjusted according to the characteristics of the phase change material and the sensitivity of the detection system. Those skilled in the art can determine the above-mentioned time window of the phase change material currently used, and set the first preset duration through the above-mentioned time window. For example, a time window of 10 seconds is required to detect the temperature change in the phase change material, then the first preset duration can be set to 10 seconds.

[0210] The first corresponding relationship between the third temperature value and the heat release degree of the phase change energy storage module can be obtained by a person skilled in the art by monitoring the third temperature value of the phase change energy storage module during the heat release process. It is understandable that the third temperature value is different under different heat release degrees.

[0211] The preset heat release degree may be set by the minimum critical heat release degree required to supply energy to the phase change energy storage module in an actual scenario.

[0212] Wherein, when the number of the third temperature monitoring points is greater than or equal to two, the third temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium. It should be noted that setting a plurality of third temperature monitoring points here can ensure the accuracy of monitoring the temperature in the first temperature distribution area. For example, the average value of the temperature values ​​monitored by the plurality of third temperature monitoring points can be used as the target third temperature value.

[0213] S250: Determine whether the second temperature is greater than the preset second temperature. If yes, go to step S260.

[0214] The preset second temperature may be set by the second temperature value of the second temperature distribution area when it is necessary to stop supplying energy to the phase change energy storage module in an actual scenario.

[0215] S260, controlling the working state of the heat source unit to switch to the shutdown state.

[0216] In the present application, when the second temperature is greater than the preset second temperature, it indicates that it is currently necessary to stop supplying energy to the phase change energy storage module. At this time, the working state of the heat source unit is controlled to switch to the shutdown state so that the heat source unit stops supplying energy to the phase change energy storage module.

[0217] In one possible implementation, at least one fourth temperature monitoring point can be set in the second temperature distribution area. By obtaining the second corresponding relationship between the fourth temperature value monitored by the fourth temperature monitoring point and the heat storage degree of the phase change energy storage module, when the working state of the heat source unit is controlled according to the second temperature, the energy change state of the phase change energy storage module is determined, and the energy change state includes the heat storage state. If the energy change state of the phase change energy storage module is the heat storage state, the target fourth temperature value monitored by the fourth temperature monitoring point is obtained, and the target fourth temperature value is used as the second temperature. The target heat storage degree of the phase change energy storage module is determined according to the target fourth temperature value and the second corresponding relationship. If the target heat storage degree is greater than the preset heat storage degree, the working state of the heat source unit is controlled to switch to the shutdown state.

[0218] Specifically, when determining the energy change state of the phase change energy storage module, the energy change state can be determined based on the increase or decrease of the temperature value monitored by the fourth temperature monitoring point. For example, the temperature of the fourth temperature monitoring point can be collected every second preset time period to determine the change trend of the multiple corresponding temperature values ​​collected. If it is an upward trend, it means that the current energy change state of the phase change energy storage module is a heat storage state. If it is a downward trend, it means that the current energy change state of the phase change energy storage module is a heat release state.

[0219] Among them, the above-mentioned second preset duration can be set by those skilled in the art as needed. For example, the second preset duration can be 10 seconds, that is, the fourth temperature monitoring point collects a temperature value every 10 seconds. For another example, the second preset duration can be 15 seconds, that is, the fourth temperature monitoring point collects a temperature value every 15 seconds. Preferably, since the phase change material undergoes a series of physical or chemical changes when the temperature changes, these changes require a certain amount of time to fully unfold, so that the temperature monitoring point needs to go through a time window to accurately capture the change in the temperature of the phase change material. The time of this time window is not fixed, and can be set or adjusted according to the characteristics of the phase change material and the sensitivity of the detection system. Those skilled in the art can determine the above-mentioned time window of the phase change material currently used, and set the second preset duration through the above-mentioned time window. For example, a time window of 10 seconds is required to detect the temperature change in the phase change material, then the second preset duration can be set to 10 seconds.

[0220] The second corresponding relationship between the fourth temperature value monitored by the fourth temperature monitoring point and the heat storage degree of the phase change energy storage module can be obtained by a technician in this field by monitoring the fourth temperature value of the phase change energy storage module during the heat storage process. It is understandable that the fourth temperature value is different under different heat storage degrees.

[0221] Among them, the preset heat storage degree can be set by the maximum critical heat storage degree that needs to stop supplying energy to the phase change energy storage module in an actual scenario.

[0222] Wherein, when the number of the fourth temperature monitoring points is greater than or equal to two, the fourth temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium. It should be noted that setting a plurality of fourth temperature monitoring points here can ensure the accuracy of monitoring the temperature in the first temperature distribution area. For example, the average value of the temperature values ​​monitored by the plurality of fourth temperature monitoring points can be used as the target fourth temperature value.

[0223] As can be seen from the above, the control method of the HVAC equipment proposed in the embodiment of the present application determines the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the temperature of the first temperature distribution area is greater than the temperature of the second temperature distribution area, obtains the first temperature corresponding to the first temperature distribution area, and obtains the second temperature corresponding to the second temperature distribution area, and judges whether the first temperature is less than the preset first temperature. If so, the working state of the heat source unit is controlled to switch to the on state. Determine whether the second temperature is greater than the preset second temperature. If so, the working state of the heat source unit is controlled to switch to the off state. In this way, the present application deeply explores the temperature distribution characteristics of the phase change material, and accurately captures whether the phase change material in the HVAC system is in an energy state of storing energy or releasing energy through the temperature conditions of the first temperature distribution area and the second temperature distribution area in the phase change material. According to the corresponding energy state, the working state of the heat source unit is targetedly controlled, which can realize accurate perception and intelligent control of the energy state of the HVAC system, thereby improving the accuracy of controlling the working state of the HVAC equipment.

[0224] Next, see Fig.14 , Fig.14 The third flow diagram of the control method of the HVAC equipment provided in the embodiment of the present application. The control method of the HVAC equipment provided in the embodiment of the present application is applied to the heat source unit in the HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material. The specific process of the method can be as follows:

[0225] S310, determining a first temperature distribution region and a second temperature distribution region of a phase change material, wherein a temperature of the first temperature distribution region is greater than a temperature of the second temperature distribution region.

[0226] Specifically, S310 is consistent with S110 and will not be described in detail here.

[0227] S320, obtaining a first temperature corresponding to the first temperature distribution region, and obtaining a second temperature corresponding to the second temperature distribution region.

[0228] Specifically, S320 is consistent with S120 and will not be repeated here.

[0229] S330: Determine the compressor frequency of the heat source unit according to the first temperature, or determine the compressor frequency of the heat source unit according to the second temperature.

[0230] In one possible implementation, when determining the compressor frequency of the heat source unit according to the first temperature, or determining the compressor frequency of the heat source unit according to the second temperature, the target condensing temperature of the heat source unit is determined according to the first temperature, or determining the target condensing temperature of the heat source unit according to the second temperature, and determining the compressor frequency of the heat source unit according to the target condensing temperature.

[0231] Among them, the target condensing temperature refers to the ideal temperature that the condenser in the heat source unit should reach so that the refrigerant can effectively complete the phase change (from gas to liquid) in the HVAC system, thereby releasing heat. The condensing temperature is an important parameter that determines the performance of the heat pump in the heat source unit, and directly affects the heat exchange efficiency of the refrigerant and the workload of the compressor. In the heat source unit, the main function of the compressor is to compress the refrigerant so that it releases heat and undergoes phase change in the condenser. The operating frequency of the compressor determines the compression strength and circulation speed of the refrigerant. Therefore, by adjusting the frequency of the compressor, the speed of the refrigerant flow and the temperature of the condenser can be changed. When the temperature change of the phase change material is detected, the controller of the heat source unit will determine the required target condensing temperature, and based on this, adjust the compressor frequency so that the condenser reaches or approaches this target condensing temperature, thereby making the heat generation and transfer of the heat source unit more accurate, improving the overall energy utilization efficiency, reducing unnecessary energy waste, and extending the life of the equipment.

[0232] In the embodiment of the present application, the target condensing temperature of the heat source unit can be determined based on the temperature of the phase change material detected at at least one temperature monitoring point, and the compressor frequency of the heat source unit can be controlled based on the target condensing temperature. In this way, the HVAC system can effectively improve the operating efficiency and energy utilization while ensuring the stability and reliability of the system. In the embodiment of the present application, the target condensing temperature can be determined by the first temperature or the second temperature.

[0233] In one example, when the target condensing temperature of the heat source unit is determined according to the first temperature, a virtual condensing temperature of the heat source unit is determined according to the first temperature, and the target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

[0234] The calculation formula of the virtual condensation temperature is:

[0235] T x =A×T1+B×T2

[0236] Among them, T xis 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.

[0237] It should be noted that the virtual condensing temperature is a calculated temperature used to optimize the operation of the HVAC system. It can reflect the comprehensive heat state in the phase change energy storage module by combining the temperatures monitored at temperature monitoring points in different locations, and is used to guide the condensation control strategy of the HVAC system. The virtual condensing temperature is not a directly measured physical temperature, but a weighted average temperature calculated by the system based on the temperature readings and weights monitored by multiple temperature monitoring points. Among them, the first weight represents the relative importance of the first temperature. The larger the weight, the greater the influence of the first temperature on the virtual condensing temperature. The second weight represents the relative importance of the second temperature. The larger the weight, the greater the influence of the second temperature on the virtual condensing temperature. The sum of the first weight and the second weight is 1, ensuring that the two jointly determine the virtual condensing temperature.

[0238] It can be understood that, according to the calculation formula of the virtual condensing temperature, when the first weight A is 1 and the second weight B is 0, the target condensing temperature of the heat source unit can be determined by the first temperature.

[0239] Specifically, when the setting mode of the HVAC system is the rapid heating mode, the first weight A is 1 and the second weight B is 0. At this time, the virtual condensing temperature of the heat source unit can be determined by the first temperature, so as to further calculate the target condensing temperature.

[0240] It should be noted that when the target condensing temperature exceeds the current saturated condensing temperature, the higher the target condensing temperature, the higher the frequency at which the compressor will operate, thereby enhancing the heating capacity of the heat source unit and enabling the heat source unit to transfer heat to the phase change energy storage module more quickly. Therefore, in the rapid heating mode, the goal of the controller is to quickly charge the phase change energy storage module. In the rapid heating mode, the controller sets the first weight of the first temperature to 1 and the second weight of the second temperature to 0, that is, it completely relies on the first temperature to determine the virtual condensing temperature and the target condensing temperature.

[0241] Since the first temperature is the temperature of the phase change material in the high temperature zone of the phase change energy storage module, the target condensation temperature determined entirely by the first temperature will be higher, thereby accelerating the heating process and making the compressor operate at a more efficient state. Such a configuration can ensure that charging is completed quickly in the rapid heating mode and meet the rapid heating requirements of the system.

[0242] When the target condensing temperature of the heat source unit is determined according to the virtual condensing temperature, the formula for calculating the target condensing temperature according to the virtual condensing temperature is as follows:

[0243] T cs =T x+ΔT+K

[0244] Among them, T cs is the target condensation temperature, T x is the virtual condensing temperature, ΔT is the difference between the temperature of the heating medium input by the heat source unit in the charging flow path in the phase change energy storage module and the temperature of the heating medium output, ΔT is 5-10°C, K is the correction parameter, and K is 0-2°C.

[0245] Specifically, T cs The target condensing temperature is the actual condensing temperature to be achieved, which is used to control the operation of the heat source unit (such as a heat pump unit). The target condensing temperature will affect the frequency and output efficiency of the compressor. x is the above virtual condensation temperature, which combines the data and weights of different temperatures and reflects the overall temperature state of the phase change material in the phase change energy storage module. ΔT is the difference between the temperature of the heating medium input to the heat source unit in the charging flow path and the temperature of the heating medium output (it can be expressed by the temperature difference when the heating medium enters the heat source unit and leaves the heat source unit, or the temperature difference when the heating medium enters the phase change energy storage module and leaves the phase change energy storage module). This parameter reflects the heat exchange effect of the heating medium during the heating process. The ΔT value is generally controlled at 5-10°C, which can ensure that the medium can effectively exchange heat between the heat source unit and the phase change energy storage module. If the ΔT value is too small (such as less than 5°C), the heat exchange of the heating medium is insufficient, resulting in reduced system efficiency; if the ΔT value is too large (such as more than 10°C), it may cause the heat pump or other components to be overloaded, affecting the operating stability of the system. K is a correction parameter used to adjust the target condensation temperature according to actual conditions. The K value is usually 0-2°C, which is used to correct the deviation caused by the external environment or system conditions in the system, so as to ensure that the target condensation temperature is more accurate.

[0246] The calculation formula of the above target condensing temperature is obtained by adding the virtual condensing temperature, the temperature difference ΔT of the charging flow path, and the system correction parameter K. This can better reflect the real-time heat demand and actual operating conditions of the system, ensure that the compressor and the entire heat source unit work under optimal conditions, so that the HVAC system can flexibly adjust its operation according to actual conditions, avoid overheating or condensation, and ensure higher energy efficiency and operational stability.

[0247] In yet another example, when the target condensing temperature of the heat source unit is determined according to the second temperature, a virtual condensing temperature of the heat source unit is determined according to the second temperature, and the target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

[0248] It can be understood that, according to the calculation formula of the virtual condensing temperature, when the first weight A is 0 and the second weight B is 1, the target condensing temperature of the heat source unit can be determined by the second temperature.

[0249] Specifically, when the setting mode of the HVAC system is the energy-saving mode, the first weight A is 0 and the second weight B is 1. At this time, the virtual condensing temperature of the heat source unit can be determined by the second temperature, so as to further calculate the target condensing temperature.

[0250] It should be noted that when the HVAC system is in energy-saving mode, the goal of the controller is to charge the phase change energy storage module with the lowest possible energy consumption. In energy-saving mode, the controller sets the first weight to 0 and the second weight to 1, that is, it completely depends on the second temperature to determine the virtual condensing temperature and the target condensing temperature.

[0251] Since the second temperature is the temperature of the phase change material in the low temperature zone of the phase change energy storage module, the target condensation temperature determined entirely by the second temperature will be lower, ensuring that the charging process is completed at the lowest energy consumption. Such a configuration enables the HVAC system to operate at a lower heating intensity, thereby achieving energy saving effects and ensuring that the phase change energy storage module can be charged with the minimum energy consumption while meeting the demand.

[0252] When the target condensing temperature is determined according to the virtual condensing temperature determined by the second temperature, it can also be calculated using the above-mentioned calculation formula for the target condensing temperature, which will not be described in detail here.

[0253] In one possible implementation, when the virtual condensing temperature of the heat source unit is determined according to the first temperature, when the target temperature of the phase change energy storage module is not less than the phase change temperature of the phase change material, and when the HVAC equipment is started, the temperature of the heating medium output by the heat source unit is less than the phase change temperature, the first temperature is used as the virtual condensing temperature; or, when the setting mode of the HVAC equipment is the rapid heating mode, the first temperature is used as the virtual condensing temperature.

[0254] In one possible implementation, when the virtual condensing temperature of the heat source unit is determined according to the second temperature, when the target temperature of the phase change energy storage module is not less than the phase change temperature, and the heating medium temperature and the second temperature both reach the phase change temperature, the second temperature is used as the virtual condensing temperature; or, when the setting mode of the HVAC equipment is the energy-saving mode, the second temperature is used as the virtual condensing temperature.

[0255] In one possible implementation, when determining the compressor frequency of the heat source unit according to the target condensing temperature, when the target condensing temperature is greater than the current saturated condensing temperature of the heat source unit, the compressor frequency of the heat source unit is controlled to increase; when the target condensing temperature is less than the current saturated condensing temperature, the compressor frequency of the heat source unit is controlled to decrease.

[0256] Specifically, when the target condensing temperature exceeds the current saturated condensing temperature, the HVAC system needs to heat faster to reach the required target temperature. Therefore, the controller will increase the frequency of the compressor to speed up the refrigerant circulation, thereby increasing the heating capacity of the heat source unit so that the thermal storage module can reach the set target temperature in a shorter time.

[0257] When the target condensing temperature is lower than the current saturated condensing temperature, the HVAC system does not need too much heat, so the controller will reduce the frequency of the compressor. Reducing the frequency of the compressor can reduce the workload of the compressor, avoid overheating and energy waste, and thus improve the overall efficiency of the system.

[0258] The target condensing temperature is the reference temperature set by the HVAC system, indicating the condensing temperature that the current system needs to reach, and is used to control the operation of the heat source unit. The saturated condensing temperature is a physical temperature related to the condensing pressure in the heat source unit, indicating the temperature at which the refrigerant can complete the phase change from gas to liquid under the current pressure. It can be obtained by looking up the condensing pressure table in the heat source unit.

[0259] It should be noted that the compressor frequency has an operating frequency range. Increasing the compressor frequency will not exceed its upper limit of the operating frequency, and lowering the compressor frequency will not exceed its lower limit of the operating frequency. 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.

[0260] From the above, it can be seen that the control method of HVAC equipment proposed in the embodiment of the present application determines the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the temperature of the first temperature distribution area is greater than the temperature of the second temperature distribution area, the first temperature corresponding to the first temperature distribution area is obtained, and the second temperature corresponding to the second temperature distribution area is obtained. The compressor frequency of the heat source unit is determined according to the first temperature, or the compressor frequency of the heat source unit is determined according to the second temperature. The working state of the heat source state can be flexibly controlled to avoid excessive heating or condensation, thereby ensuring higher energy efficiency and operation stability.

[0261] Next, see Fig.15 , Fig.15 The fourth flow diagram of the control method of the HVAC equipment provided in the embodiment of the present application. The control method of the HVAC equipment provided in the embodiment of the present application is applied to the heat source unit in the HVAC system. The HVAC system includes a heat source unit and a phase change energy storage module. The phase change energy storage module is connected to the heat source unit. The phase change energy storage module includes a phase change material. The specific process of the method can be as follows:

[0262] S410, determining a first temperature distribution region and a second temperature distribution region of a phase change material, wherein a temperature of the first temperature distribution region is greater than a temperature of the second temperature distribution region.

[0263] Specifically, S410 is consistent with S110 and will not be described in detail here.

[0264] S420: Obtain a first temperature corresponding to a first temperature distribution region.

[0265] Specifically, S420 is consistent with S120 and will not be described in detail here.

[0266] S430: When the first temperature is greater than or equal to the first preset control temperature, the heat source unit executes a high temperature protection mode on the phase change module.

[0267] The first preset control temperature is the difference between the failure temperature of the phase change material and the first temperature coefficient, the second preset control temperature is the difference between the failure temperature and the second temperature coefficient, and the first temperature coefficient is smaller than the second temperature coefficient.

[0268] Exemplarily, the failure temperature of the phase change material is expressed as T_failure, the first temperature coefficient is expressed as △T2, and the second temperature coefficient is expressed as △T1. Then the first preset control temperature can be expressed as T_failure-△T2; the second preset control temperature can be expressed as T_failure-△T1, wherein the first temperature coefficient is smaller than the second temperature coefficient.

[0269] Specifically, the first temperature coefficient and the second temperature coefficient can be customized based on the actual application environment. The first temperature coefficient is the coefficient for entering the high temperature protection mode at the temperature set for turning on the high temperature protection mode, and the second temperature coefficient is the coefficient for exiting the high temperature protection mode at the temperature set for exiting the high temperature protection mode.

[0270] In this embodiment, when the heat source unit is used to perform a high temperature protection mode on the phase change module, the heat source unit can be controlled to supply water and cool the phase change energy storage module, and the heat source unit can be controlled to perform a frequency reduction process.

[0271] Among them, the heat source unit includes a water pump and a compressor.

[0272] In this embodiment, the water pump can be controlled based on the maximum water output to supply water and cool the phase change energy storage module, and the compressor can be frequency-reduced based on a preset cycle and a preset adjustment frequency.

[0273] The preset period and the preset adjustment frequency can be set by those skilled in the art according to actual conditions.

[0274] That is, the water pump is controlled to increase the water supply to the charging flow path to supply water to the phase change energy storage module for cooling down the temperature of the phase change energy storage module, and the compressor is frequency-reduced through a preset cycle and a preset adjustment frequency to reduce the operating frequency of the heat source unit, thereby reducing the working heat generated by the phase change energy storage module, thereby rapidly cooling down the phase change energy storage module.

[0275] S440: When the first temperature is lower than the second preset control temperature, the phase change energy storage module exits the high temperature protection mode through the heat source unit.

[0276] In this embodiment, when the first temperature is lower than the second preset control temperature, the heat source unit causes the phase change energy storage module to exit the high temperature protection mode described in step S430 .

[0277] From the above, it can be seen that the control method of HVAC equipment proposed in the embodiment of the present application determines the first temperature distribution area and the second temperature distribution area of ​​the phase change material, the temperature of the first temperature distribution area is greater than the temperature of the second temperature distribution area, and the first temperature corresponding to the first temperature distribution area is obtained. When the first temperature is greater than or equal to the first preset control temperature, the high temperature protection mode is executed on the phase change module through the heat source unit. When the first temperature is less than the second preset control temperature, the high temperature protection mode is exited from the phase change energy storage module through the heat source unit, thereby realizing effective high temperature protection of the phase change heat storage module in the HVAC system, avoiding the situation where the temperature of the phase change heat storage module is too high, ensuring the normal operation of the system, and thus ensuring the performance of the HVAC system.

[0278] Next, see Figures 16 to 18 , is a phase change energy storage module 100 provided in an embodiment of the present application. The phase change energy storage module 100 is mainly used to store heat and is a device for heat exchange. The phase change energy storage module 100 includes a shell 60, a heat exchange module 20, a phase change material 50 and at least one temperature sensing component 10.

[0279] Optionally, the shell 60 is shaped like a cubic structure, and a accommodating cavity 6021 is formed inside the shell 60. The heat exchange module 20 and the phase change material 50 are both arranged in the accommodating cavity 6021, and the heat exchange module 20 is buried in the phase change material 50. It should be noted that the heat exchange module 20 includes a plurality of sub-heat exchangers 201, and there is a gap between two adjacent sub-heat exchangers 201, and the phase change material 50 can be filled in the gap, so that the heat exchange module 20 can be in full contact with the phase change material 50, so that the heat exchange module 20 can be thermally connected to the phase change material 50, that is, the heat exchange module 20 can exchange heat with the phase change material 50.

[0280] The temperature sensing component 10 can be inserted into the phase change material 50 to a preset depth, so that the temperature sensing component 10 can detect the temperature of the phase change material 50 at the preset depth. Therefore, by inserting the temperature sensing component 10 into the phase change material 50 to a preset depth, the temperature change of the phase change material 50 in a specified area inside the phase change energy storage module 100 can be accurately monitored. The temperature sensing component can be used to monitor the temperature at a temperature monitoring point set in the phase change energy storage module.

[0281] See also Fig.18 and Fig.19 In some embodiments, the temperature sensing component 10 may include a support plate 1 , a blind pipe 2 , and a temperature sensing detector 3 .

[0282] Optionally, the support plate 1 is a square plate, and the support plate 1 can be fixed to the heat exchange module 20 by threaded connection or welding, and the support plate 1 has an assembly hole 11 (see Fig. 22 ).

[0283] The blind tube 2 is a hollow tube body, and one end of the blind tube 2 is an open end, and the other end of the blind tube 2 is a closed end. The blind tube 2 can be inserted into the assembly hole 11, so that the closed end of the blind tube 2 extends into the heat exchange module 20, and the open end of the blind tube 2 can be connected to the support plate 1, so that the blind tube 2 can be accurately installed at a specified position in the heat exchange module 20 through the support plate 1.

[0284] Combination Fig. 20 and Fig.21 The inner wall surface of the blind pipe 2 can also be provided with a positioning structure 21, and the temperature detector 3 can include a temperature probe 31. The temperature probe 31 can be arranged inside the blind pipe 2, and the temperature probe 31 can cooperate with the positioning structure 21 to limit the depth of the temperature probe 31 extending into the blind pipe 2, or in other words, the depth of the temperature probe 31 extending into the heat exchange module 20 can be limited, so that the temperature probe 31 can be firmly installed at a specified position in the heat exchange module 20, so as to accurately monitor the temperature change of the phase change material in the specified area of ​​the heat exchange module 20.

[0285] See also Fig.21 In some embodiments, the positioning structure 21 can include a positioning protrusion 211 disposed on the inner wall surface of the blind tube 2 , and the temperature sensing probe 31 can be snap-fitted or abutted against the positioning protrusion 211 .

[0286] Optionally, the inner wall surface of the blind tube 2 can protrude toward the side where the axis of the blind tube 2 is located to form a positioning protrusion 211. When installing the temperature sensing detector 3, the temperature sensing probe 31 is inserted into the tube body of the blind tube 2 from the tube mouth of the blind tube 2. As the temperature sensing probe 31 is gradually inserted, the temperature sensing probe 31 can be engaged or abutted with the positioning protrusion 211. The positioning protrusion 211 can prevent the temperature sensing probe 31 from continuing to extend into the blind tube 2, thereby fixing the temperature sensing probe 31 at a specified position in the blind tube 2. Since the blind tube 2 is fixedly installed on the heat exchange module 20, the temperature sensing probe 31 can be fixed at a specified position of the heat exchange module 20, so that the temperature sensing probe 31 can be used to detect the temperature of the phase change material in the specified area. By arranging the positioning protrusion 211 on the inner wall surface of the blind tube 2, the temperature sensing probe 31 can be conveniently positioned at the specified position.

[0287] Optionally, the positioning protrusion 211 is extended along the circumference of the blind tube 2, so that a circular protrusion is formed on the inner wall surface of the blind tube 2. When the temperature sensing probe 31 is set in the blind tube 2, the lower end of the temperature sensing probe 31 can be inserted into the circular protrusion and abut against the circular protrusion, thereby positioning the temperature sensing probe 31 at the position where the positioning protrusion 211 is set.

[0288] Optionally, the inner wall surface of the blind tube 2 can be provided with a plurality of positioning protrusions 211, and the plurality of positioning protrusions 211 can be arranged in sequence and spaced apart along the circumference of the blind tube 2, and a snap-in groove can be formed between two adjacent positioning protrusions 211. When the temperature sensing probe 31 is arranged in the blind tube 2, the temperature sensing probe 31 can be snap-fitted with the snap-in groove, thereby positioning the temperature sensing probe 31 at the position where the positioning protrusion 211 is provided.

[0289] See also Figure 20 to Figure 22 In some embodiments, the temperature detector 3 can also include a sensor wire 32, a portion of the sensor wire 32 is inserted into the blind tube 2 and connected to the temperature probe 31, and an in-position indicator 321 is provided on the outer wall of the sensor wire 32. When the temperature probe 31 cooperates with the positioning structure 21, the in-position indicator 321 is located at the pipe mouth of the blind tube 2.

[0290] Specifically, the sensor line 32 usually includes a conductive wire, which can be connected to the temperature sensing probe 31 and is used to transmit the temperature signal detected by the temperature sensing probe 31. Part of the sensor line 32 will be inserted into the blind tube 2. At this time, the blind tube 2 can also play a role in regularizing the sensor line 32 to prevent the sensor line 32 from swinging.

[0291] Optionally, the outer wall surface of the sensor wire body 32 can be provided with an in-position indicator portion 321, which can be extended along the length direction of the sensor wire body 32, and the length of the sensor wire body 32 between the in-position indicator portion 321 and the temperature sensing probe 31 can be flexibly adjusted according to the distance between the pipe mouth of the blind pipe 2 and the positioning structure 21, so that when installing the temperature detector 3, the installation status of the temperature sensing probe 31 can be judged by observing the position of the in-position indicator portion 321.

[0292] Specifically, when installing the temperature detector 3, the temperature probe 31 can be inserted into the blind tube 2 first, and then the sensor wire 32 can be gradually extended into the blind tube 2 to drive the temperature probe 31 to further extend into the blind tube 2 until the sensor wire 32 can no longer extend into the blind tube 2. At this time, it can be judged whether the temperature probe 31 is installed in place based on the positional relationship between the in-place indicator 321 and the blind tube 2.

[0293] To be more clear, if the in-place indicator 321 is located at the pipe mouth of the blind pipe 2 at this time, it means that the temperature sensing probe 31 has successfully cooperated with the positioning structure 21, and the temperature sensing probe 31 has been installed in place; if there is still a distance between the in-place indicator 321 and the pipe mouth of the blind pipe 2 at this time, it means that the temperature sensing probe 31 may be stuck somewhere in the blind pipe 2, but has not yet extended into the positioning structure 21, and the temperature sensing probe 31 is not installed in place; if the in-place indicator 321 has extended into the interior of the blind pipe 2 at this time, it means that the positioning structure 21 may be damaged and the temperature sensing probe 31 cannot be limited, and the temperature sensing probe 31 is not installed in place.

[0294] Therefore, by observing the positional relationship between the position indicator 321 and the pipe opening of the blind pipe 2, it is possible to quickly and accurately determine whether the temperature sensing probe 31 is installed in place.

[0295] Optionally, the in-position indicator 321 is a mark or feature, for example, the in-position indicator 321 may be a color mark, a protrusion, a groove or other forms of marks.

[0296] Optionally, the temperature sensing component 10 can also include heat transfer oil, which is a special lubricating oil used at high temperatures. The heat transfer oil can be arranged inside the blind pipe 2, and the heat transfer oil can immerse the temperature sensing probe 31. By filling the blind pipe 2 with heat transfer oil, the air isolation layer between the temperature sensing probe 31 and the phase change material can be eliminated, thereby improving the heat transfer effect between the temperature sensing probe 31 and the phase change material, and accelerating the response speed of the temperature sensing probe 31 to temperature changes, thereby improving the measurement accuracy.

[0297] In one embodiment, a control device for a heating and ventilation device is also provided. Fig.23 , Fig.23A schematic diagram of the structure of a control device 500 for a HVAC device provided in an embodiment of the present application. The control device 500 for a HVAC device is applied to a HVAC device, and the control device 500 for a HVAC device includes a determination unit 501, an acquisition unit 502, and a control unit 503, as follows:

[0298] A determination unit 501 is used to determine a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0299] An acquisition unit 502 is used to acquire a first temperature corresponding to a first temperature distribution region, and acquire a second temperature corresponding to a second temperature distribution region;

[0300] The control unit 503 is used to control the working state of the heat source unit according to the first temperature, or to control the working state of the heat source unit according to the second temperature.

[0301] In a possible implementation, a plurality of first temperature monitoring points are set in the first temperature distribution area, and the acquisition unit 502 may be used to:

[0302] Acquire a plurality of first temperature values ​​monitored at a plurality of first temperature monitoring points;

[0303] taking the highest temperature value among the plurality of first temperature values ​​as the first temperature;

[0304] Alternatively, an average temperature value of multiple first temperature values ​​is taken as the first temperature.

[0305] In a possible implementation, the working state includes a power-on state, and the control unit 503 may be used to:

[0306] Determining whether the first temperature is less than a preset first temperature;

[0307] If yes, the working state of the heat source unit is controlled to switch to the on state.

[0308] In a possible implementation, a plurality of second temperature monitoring points are set in the second temperature distribution area, and the acquisition unit 502 may be used to:

[0309] Acquiring a plurality of second temperature values ​​monitored at a plurality of second temperature monitoring points;

[0310] taking the lowest temperature value among the plurality of second temperature values ​​as the second temperature;

[0311] Alternatively, an average temperature value of a plurality of second temperature values ​​is taken as the second temperature.

[0312] In a possible implementation, the working state includes a shutdown state, and the control unit 503 may be configured to:

[0313] Determining whether the second temperature is greater than a preset second temperature;

[0314] If so, the working state of the heat source unit is controlled to switch to the shutdown state.

[0315] In a possible implementation, the first temperature distribution area and the second temperature distribution area are set based on the temperature gradient distribution in the charging flow path direction in the phase change energy storage module.

[0316] In a possible implementation, the determining unit 501 may be configured to:

[0317] Dividing the phase change material into a plurality of temperature distribution regions according to the flow direction of the heat medium;

[0318] The area with the highest corresponding temperature in the plurality of temperature distribution areas is taken as the first temperature distribution area;

[0319] The region with the lowest corresponding temperature among the plurality of temperature distribution regions is taken as the second temperature distribution region.

[0320] In a possible implementation, at least one third temperature monitoring point is set in the first temperature distribution area, and the acquisition unit 502 may also be used to:

[0321] A first corresponding relationship between a third temperature value monitored by the third temperature monitoring point and a heat release degree of the phase change energy storage module is obtained.

[0322] In a possible implementation, the control unit 503 may be used to:

[0323] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat release state;

[0324] If the energy change state of the phase change energy storage module is a heat release state, obtaining a target third temperature value monitored by the third temperature monitoring point, and using the target third temperature value as the first temperature;

[0325] Determining a target heat release degree of the phase change energy storage module according to the target third temperature value and the first corresponding relationship;

[0326] If the target heat release degree is greater than the preset heat release degree, the working state of the heat source unit is controlled to switch to the on state.

[0327] When the number of the third temperature monitoring points is greater than or equal to two, the third temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium.

[0328] In a possible implementation, at least one fourth temperature monitoring point is set in the second temperature distribution area, and the acquisition unit 502 may also be used to:

[0329] A second corresponding relationship between a fourth temperature value monitored by the fourth temperature monitoring point and a heat storage degree of the phase change energy storage module is obtained.

[0330] In a possible implementation, the control unit 503 may also be used to:

[0331] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat storage state;

[0332] If the energy change state of the phase change energy storage module is a heat storage state, obtaining a target fourth temperature value monitored by the fourth temperature monitoring point, and using the target fourth temperature value as the second temperature;

[0333] Determining a target heat storage degree of the phase change energy storage module according to the target fourth temperature value and the second corresponding relationship;

[0334] If the target heat storage degree is greater than the preset heat storage degree, the working state of the heat source unit is controlled to switch to the shutdown state.

[0335] In a possible implementation, the control unit 503 may be used to:

[0336] The compressor frequency of the heat source unit is determined according to the first temperature, or the compressor frequency of the heat source unit is determined according to the second temperature.

[0337] In a possible implementation, the control unit 503 may be used to:

[0338] determining a target condensing temperature of the heat source unit according to the first temperature, or determining a target condensing temperature of the heat source unit according to the second temperature;

[0339] The compressor frequency of the heat source unit is determined according to the target condensing temperature.

[0340] In a possible implementation, the control unit 503 may be used to:

[0341] determining a virtual condensing temperature of the heat source unit according to the first temperature, or determining a virtual condensing temperature of the heat source unit according to the second temperature;

[0342] The target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

[0343] In a possible implementation, the control unit 503 may be used to:

[0344] When the target temperature of the phase change energy storage module is not less than the phase change temperature of the phase change material, and when the HVAC equipment is started, the temperature of the heating medium output by the heat source unit is less than the phase change temperature, the first temperature is used as the virtual condensation temperature;

[0345] or,

[0346] When the setting mode of the HVAC equipment is the rapid heating mode, the first temperature is used as the virtual condensing temperature.

[0347] In a possible implementation, the control unit 503 may be used to:

[0348] The formula for calculating the target condensing temperature based on the virtual condensing temperature is as follows:

[0349] T cs =T x +ΔT+K

[0350] Among them, T cs is the target condensation temperature, T x is the virtual condensing temperature, ΔT is the difference between the temperature of the heating medium input by the heat source unit in the charging flow path in the phase change energy storage module and the temperature of the heating medium output, ΔT is 5-10°C, K is the correction parameter, and K is 0-2°C.

[0351] In a possible implementation, the control unit 503 may be used to:

[0352] When the target condensing temperature is greater than the current saturated condensing temperature of the heat source unit, controlling the compressor frequency of the heat source unit to increase;

[0353] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is controlled to decrease.

[0354] In a possible implementation, the control unit 503 may be used to:

[0355] When the first temperature is greater than or equal to the first preset control temperature, a high temperature protection mode is executed on the phase change module through the heat source unit;

[0356] When the first temperature is lower than the second preset control temperature, the phase change energy storage module exits the high temperature protection mode through the heat source unit;

[0357] The first preset control temperature is the difference between the failure temperature of the phase change material and the first temperature coefficient, the second preset control temperature is the difference between the failure temperature and the second temperature coefficient, and the first temperature coefficient is smaller than the second temperature coefficient.

[0358] In a possible implementation, the control unit 503 may be used to:

[0359] The heat source unit is controlled to supply water and cool the phase change energy storage module, and the heat source unit is controlled to reduce the frequency.

[0360] In a possible implementation, the heat source unit includes a water pump and a compressor, and the control unit 503 can be used to:

[0361] The water pump is controlled based on the maximum water output to supply water and cool the phase change energy storage module, and the compressor is frequency-reduced based on a preset cycle and a preset adjustment frequency.

[0362] It should be noted that the control device of the HVAC equipment provided in the embodiment of the present application and the control method of the HVAC equipment in the above embodiment belong to the same concept. Any method provided in the control method embodiment of the HVAC equipment can be implemented through the control device of the HVAC equipment. The specific implementation process is detailed in the control method embodiment of the HVAC equipment, which will not be repeated here.

[0363] In addition, in order to better implement the control method of the HVAC equipment in the embodiment of the present application, the present application also provides a HVAC equipment based on the control method of the HVAC equipment. Fig.24 , Fig.24 The first structural diagram of the HVAC equipment provided in the embodiment of the present application. The HVAC equipment 600 includes a processor 601 and a memory 602. The processor 601 is electrically connected to the memory 602.

[0364] The processor 601 is the control center of the HVAC equipment 600. It uses various interfaces and lines to connect various parts of the entire HVAC equipment. By running or calling the computer program stored in the memory 602, and calling the data stored in the memory 602, it executes various functions of the HVAC equipment and processes data, thereby monitoring the HVAC equipment as a whole. The processor 601 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0365] The memory 602 can be used to store computer programs and data. The computer program stored in the memory 602 contains instructions that can be executed in the processor. The computer program can be composed of various functional modules. The processor 601 executes various functional applications and data processing by calling the computer program stored in the memory 602. Among them, the memory 602 can mainly include a program storage area and a data storage area. The program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the HVAC equipment 600 (such as audio data, video data, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart MediaCard, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0366] In this embodiment, the processor 601 in the HVAC device 600 will load instructions corresponding to the processes of one or more computer programs into the memory 602 according to the following steps, and the processor 601 will run the computer program stored in the memory 602 to achieve various functions:

[0367] Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0368] Acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region;

[0369] The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

[0370] In one possible implementation, see Fig.25 , Fig.25 The second structural diagram of the HVAC equipment provided in the embodiment of the present application. The HVAC equipment 600 further includes: a heat source unit 603 and a phase change energy storage module 604 , and the phase change energy storage module 604 is connected to the heat source unit 603 .

[0371] Among them, the specific introduction of the heat source unit and the phase change energy storage module can be found in the previous article, which will not be repeated here.

[0372] In this embodiment, the processor 601 in the HVAC device 600 will load instructions corresponding to the processes of one or more computer programs into the memory 602 according to the following steps, and the processor 601 will run the computer program stored in the memory 602 to achieve various functions:

[0373] Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein the temperature of the first temperature distribution region is greater than the temperature of the second temperature distribution region;

[0374] Acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region;

[0375] The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

[0376] In a possible implementation, a plurality of first temperature monitoring points are set in the first temperature distribution area. When the processor 601 acquires the first temperature corresponding to the first temperature distribution area, it may execute:

[0377] Acquire a plurality of first temperature values ​​monitored at a plurality of first temperature monitoring points;

[0378] taking the highest temperature value among the plurality of first temperature values ​​as the first temperature;

[0379] Alternatively, an average temperature value of multiple first temperature values ​​is taken as the first temperature.

[0380] In a possible implementation, the working state includes a power-on state. When the processor 601 controls the working state of the heat source unit according to the first temperature, it can execute:

[0381] Determining whether the first temperature is less than a preset first temperature;

[0382] If yes, the working state of the heat source unit is controlled to switch to the on state.

[0383] In a possible implementation, a plurality of second temperature monitoring points are set in the second temperature distribution area. When the processor 601 acquires the second temperature corresponding to the second temperature distribution area, it may execute:

[0384] Acquiring a plurality of second temperature values ​​monitored at a plurality of second temperature monitoring points;

[0385] taking the lowest temperature value among the plurality of second temperature values ​​as the second temperature;

[0386] Alternatively, an average temperature value of a plurality of second temperature values ​​is taken as the second temperature.

[0387] In a possible implementation, the working state includes a shutdown state, and the processor 601, when executing the working state of controlling the heat source unit according to the second temperature, may execute:

[0388] Determining whether the second temperature is greater than a preset second temperature;

[0389] If so, the operating state of the heat source unit is controlled to switch to the shutdown state.

[0390] In a possible implementation, the first temperature distribution area and the second temperature distribution area are set based on the temperature gradient distribution in the charging flow path direction in the phase change energy storage module.

[0391] In a possible implementation, when determining the first temperature distribution region and the second temperature distribution region of the phase change material, the processor 601 may execute:

[0392] Dividing the phase change material into a plurality of temperature distribution regions according to the flow direction of the heat medium;

[0393] The area with the highest corresponding temperature in the plurality of temperature distribution areas is taken as the first temperature distribution area;

[0394] The region with the lowest corresponding temperature among the plurality of temperature distribution regions is taken as the second temperature distribution region.

[0395] In a possible implementation manner, at least one third temperature monitoring point is set in the first temperature distribution area, and the processor 601 may further execute:

[0396] A first corresponding relationship between a third temperature value monitored by the third temperature monitoring point and a heat release degree of the phase change energy storage module is obtained.

[0397] In a possible implementation, when the processor 601 controls the working state of the heat source unit according to the first temperature, the processor 601 may execute:

[0398] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat release state;

[0399] If the energy change state of the phase change energy storage module is a heat release state, obtaining a target third temperature value monitored by the third temperature monitoring point, and using the target third temperature value as the first temperature;

[0400] Determining a target heat release degree of the phase change energy storage module according to the target third temperature value and the first corresponding relationship;

[0401] If the target heat release degree is greater than the preset heat release degree, the working state of the heat source unit is controlled to switch to the on state.

[0402] In a possible implementation, when the number of the third temperature monitoring points is greater than or equal to two, the third temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium.

[0403] In a possible implementation manner, at least one fourth temperature monitoring point is set in the second temperature distribution area, and the processor 601 may further execute:

[0404] A second corresponding relationship between a fourth temperature value monitored by the fourth temperature monitoring point and a heat storage degree of the phase change energy storage module is obtained.

[0405] In a possible implementation, when the processor 601 controls the working state of the heat source unit according to the second temperature, the processor 601 may execute:

[0406] Determine the energy change state of the phase change energy storage module, the energy change state includes a heat storage state;

[0407] If the energy change state of the phase change energy storage module is a heat storage state, obtaining a target fourth temperature value monitored by the fourth temperature monitoring point, and using the target fourth temperature value as the second temperature;

[0408] Determining a target heat storage degree of the phase change energy storage module according to the target fourth temperature value and the second corresponding relationship;

[0409] If the target heat storage degree is greater than the preset heat storage degree, the working state of the heat source unit is controlled to switch to the shutdown state.

[0410] In a possible implementation, when the processor 601 controls the working state of the heat source unit according to the first temperature or controls the working state of the heat source unit according to the second temperature, the processor 601 may execute:

[0411] The compressor frequency of the heat source unit is determined according to the first temperature, or the compressor frequency of the heat source unit is determined according to the second temperature.

[0412] In a possible implementation, when the processor 601 determines the compressor frequency of the heat source unit according to the first temperature or determines the compressor frequency of the heat source unit according to the second temperature, it may execute:

[0413] determining a target condensing temperature of the heat source unit according to the first temperature, or determining a target condensing temperature of the heat source unit according to the second temperature;

[0414] The compressor frequency of the heat source unit is determined according to the target condensing temperature.

[0415] In a possible implementation, when the processor 601 determines the target condensing temperature of the heat source unit according to the first temperature or determines the target condensing temperature of the heat source unit according to the second temperature, the processor 601 may execute:

[0416] determining a virtual condensing temperature of the heat source unit according to the first temperature, or determining a virtual condensing temperature of the heat source unit according to the second temperature;

[0417] The target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

[0418] In a possible implementation, when determining the virtual condensing temperature of the heat source unit according to the first temperature, the processor 601 may execute:

[0419] When the target temperature of the phase change energy storage module is not less than the phase change temperature of the phase change material, and when the HVAC equipment is started, the temperature of the heating medium output by the heat source unit is less than the phase change temperature, the first temperature is used as the virtual condensation temperature;

[0420] or,

[0421] When the setting mode of the HVAC equipment is the rapid heating mode, the first temperature is used as the virtual condensing temperature.

[0422] In a possible implementation, when determining the virtual condensing temperature of the heat source unit according to the second temperature, the processor 601 may execute:

[0423] When the target temperature of the phase change energy storage module is not less than the phase change temperature, and both the heating medium temperature and the second temperature reach the phase change temperature, the second temperature is used as the virtual condensation temperature;

[0424] or,

[0425] When the setting mode of the HVAC equipment is the energy-saving mode, the second temperature is used as the virtual condensing temperature.

[0426] In a possible implementation, when determining the target condensing temperature of the heat source unit according to the virtual condensing temperature, the processor 601 may execute:

[0427] The formula for calculating the target condensing temperature based on the virtual condensing temperature is as follows:

[0428] T cs =T x +ΔT+K

[0429] Among them, T cs is the target condensation temperature, T x is the virtual condensing temperature, ΔT is the difference between the temperature of the heating medium input by the heat source unit in the charging flow path in the phase change energy storage module and the temperature of the heating medium output, ΔT is 5-10°C, K is the correction parameter, and K is 0-2°C.

[0430] In a possible implementation, when determining the compressor frequency of the heat source unit according to the target condensing temperature, the processor 601 may execute:

[0431] When the target condensing temperature is greater than the current saturated condensing temperature of the heat source unit, controlling the compressor frequency of the heat source unit to increase;

[0432] When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is controlled to decrease.

[0433] In a possible implementation, when the processor 601 controls the working state of the heat source unit according to the first temperature, the processor 601 may execute:

[0434] When the first temperature is greater than or equal to the first preset control temperature, a high temperature protection mode is executed on the phase change module through the heat source unit;

[0435] When the first temperature is lower than the second preset control temperature, the phase change energy storage module exits the high temperature protection mode through the heat source unit;

[0436] The first preset control temperature is the difference between the failure temperature of the phase change material and the first temperature coefficient, the second preset control temperature is the difference between the failure temperature and the second temperature coefficient, and the first temperature coefficient is smaller than the second temperature coefficient.

[0437] In a possible implementation, when the processor 601 executes the high temperature protection mode on the phase change module through the heat source unit, the processor 601 may execute:

[0438] The heat source unit is controlled to supply water and cool the phase change energy storage module, and the heat source unit is controlled to reduce the frequency.

[0439] In a possible implementation, the heat source unit includes a water pump and a compressor. When the processor 601 controls the heat source unit to supply water and cool the phase change energy storage module, and controls the heat source unit to reduce the frequency, the processor 601 may execute:

[0440] The water pump is controlled based on the maximum water output to supply water and cool the phase change energy storage module, and the compressor is frequency-reduced based on a preset cycle and a preset adjustment frequency.

[0441] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on a computer, the computer executes the control method for HVAC equipment described in any of the above embodiments.

[0442] It should be noted that, a person skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the storage medium can include but is not limited to: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0443] In addition, the terms "first", "second", and "third" in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but some embodiments also include steps or modules that are not listed, or some embodiments also include other steps or modules inherent to these processes, methods, products, or devices.

[0444] The control method, device, storage medium and HVAC equipment provided by the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application; at the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A control method for HVAC equipment, characterized in that: A heat source unit applied to a HVAC system, the HVAC system comprising a heat source unit and a phase change energy storage module, the phase change energy storage module being connected to the heat source unit, the phase change energy storage module comprising a phase change material, and the control method of the HVAC equipment comprising: Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein a temperature of the first temperature distribution region is greater than a temperature of the second temperature distribution region; Acquire a first temperature corresponding to the first temperature distribution area, and acquire a second temperature corresponding to the second temperature distribution area; The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

2. The control method of HVAC equipment according to claim 1, characterized in that: A plurality of first temperature monitoring points are set in the first temperature distribution area, and obtaining the first temperature corresponding to the first temperature distribution area includes: Acquire a plurality of first temperature values ​​monitored at the plurality of first temperature monitoring points; Using the highest temperature value among the multiple first temperature values ​​as the first temperature; Alternatively, an average temperature value of the multiple first temperature values ​​is used as the first temperature.

3. The control method of HVAC equipment according to claim 2, characterized in that: The working state includes a power-on state, and the controlling the working state of the heat source unit according to the first temperature includes: Determining whether the first temperature is less than a preset first temperature; If so, the working state of the heat source unit is controlled to switch to the on state.

4. The control method of HVAC equipment according to claim 1, characterized in that: A plurality of second temperature monitoring points are set in the second temperature distribution area, and obtaining the second temperature corresponding to the second temperature distribution area includes: Acquiring a plurality of second temperature values ​​monitored at the plurality of second temperature monitoring points; Using the lowest temperature value among the plurality of second temperature values ​​as the second temperature; Alternatively, an average temperature value of the plurality of second temperature values ​​is taken as the second temperature.

5. The control method of HVAC equipment according to claim 4, characterized in that: The working state includes a shutdown state, and the controlling the working state of the heat source unit according to the second temperature includes: Determining whether the second temperature is greater than a preset second temperature; If so, the working state of the heat source unit is controlled to switch to the shutdown state.

6. The control method for HVAC equipment according to any one of claims 1 to 5, characterized in that: The first temperature distribution area and the second temperature distribution area are set based on the temperature gradient distribution in the charging flow path direction in the phase change energy storage module.

7. The control method of HVAC equipment according to claim 6, characterized in that: The determining of the first temperature distribution region and the second temperature distribution region of the phase change material comprises: dividing the phase change material into a plurality of temperature distribution regions according to the flow direction of the heat medium; The area with the highest corresponding temperature among the multiple temperature distribution areas is taken as the first temperature distribution area; The region with the lowest corresponding temperature among the multiple temperature distribution regions is used as the second temperature distribution region.

8. The control method of HVAC equipment according to claim 1, characterized in that: At least one third temperature monitoring point is set within the first temperature distribution area, and the method further includes: Acquire a first corresponding relationship between a third temperature value monitored by the third temperature monitoring point and a heat release degree of the phase change energy storage module; The step of controlling the working state of the heat source unit according to the first temperature includes: Determining an energy change state of the phase change energy storage module, wherein the energy change state includes a heat release state; If the energy change state of the phase-change energy storage module is the heat release state, obtaining the target third temperature value monitored by the third temperature monitoring point, and using the target third temperature value as the first temperature; Determining a target heat release degree of the phase change energy storage module according to the target third temperature value and the first corresponding relationship; If the target heat release degree is greater than the preset heat release degree, the working state of the heat source unit is controlled to switch to the power-on state.

9. The control method of HVAC equipment according to claim 8, characterized in that: When the number of the third temperature monitoring points is greater than or equal to two, the third temperature monitoring points are arranged at preset intervals in the flow direction of the heat medium.

10. The control method of HVAC equipment according to claim 1, characterized in that: At least one fourth temperature monitoring point is set within the second temperature distribution area, and the method further includes: Acquire a second corresponding relationship between a fourth temperature value monitored by the fourth temperature monitoring point and a heat storage degree of the phase change energy storage module; The step of controlling the working state of the heat source unit according to the second temperature includes: Determining an energy change state of the phase change energy storage module, wherein the energy change state includes a heat storage state; If the energy change state of the phase-change energy storage module is the heat storage state, obtaining the target fourth temperature value monitored by the fourth temperature monitoring point, and using the target fourth temperature value as the second temperature; Determining a target heat storage degree of the phase change energy storage module according to the target fourth temperature value and the second corresponding relationship; If the target heat storage degree is greater than the preset heat storage degree, the working state of the heat source unit is controlled to switch to the shutdown state.

11. The control method of HVAC equipment according to claim 1, characterized in that: The controlling the working state of the heat source unit according to the first temperature, or the controlling the working state of the heat source unit according to the second temperature, comprises: A compressor frequency of the heat source unit is determined according to the first temperature, or a compressor frequency of the heat source unit is determined according to the second temperature.

12. The control method of HVAC equipment according to claim 11, characterized in that: The step of determining the compressor frequency of the heat source unit according to the first temperature, or determining the compressor frequency of the heat source unit according to the second temperature, comprises: determining a target condensing temperature of the heat source unit according to the first temperature, or determining the target condensing temperature of the heat source unit according to the second temperature; A compressor frequency of the heat source unit is determined according to the target condensing temperature.

13. The control method of HVAC equipment according to claim 12, characterized in that: The determining the target condensing temperature of the heat source unit according to the first temperature, or determining the target condensing temperature of the heat source unit according to the second temperature, comprises: determining a virtual condensing temperature of the heat source unit according to the first temperature, or determining the virtual condensing temperature of the heat source unit according to the second temperature; A target condensing temperature of the heat source unit is determined according to the virtual condensing temperature.

14. The control method of HVAC equipment according to claim 13, characterized in that: The step of determining the virtual condensing temperature of the heat source unit according to the first temperature comprises: When the target temperature of the phase-change energy storage module is not less than the phase-change temperature of the phase-change material, and when the HVAC equipment is started, the temperature of the heat supply medium output by the heat source unit is less than the phase-change temperature, the first temperature is used as the virtual condensation temperature; or, When the setting mode of the HVAC equipment is the rapid heating mode, the first temperature is used as the virtual condensing temperature.

15. The control method of HVAC equipment according to claim 13, characterized in that: The determining the virtual condensing temperature of the heat source unit according to the second temperature comprises: When the target temperature of the phase-change energy storage module is not less than the phase-change temperature, and both the heating medium temperature and the second temperature reach the phase-change temperature, the second temperature is used as the virtual condensation temperature; or, When the setting mode of the HVAC equipment is the energy-saving mode, the second temperature is used as the virtual condensing temperature.

16. The control method of HVAC equipment according to claim 13, characterized in that: The step of determining the target condensing temperature of the heat source unit according to the virtual condensing temperature comprises: The formula for calculating the target condensing temperature according to the virtual condensing temperature is as follows: T cs =T x +ΔT+K Among them, T cs is the target condensation temperature, T x is the virtual condensation temperature, ΔT is the difference between the temperature of the heating medium input by the heat source unit in the charging flow path in the phase change energy storage module and the temperature of the heating medium output, ΔT is 5-10°C, K is the correction parameter, and K is 0-2°C.

17. The control method of HVAC equipment according to claim 12, characterized in that: The step of determining the compressor frequency of the heat source unit according to the target condensing temperature comprises: When the target condensing temperature is greater than the current saturated condensing temperature of the heat source unit, controlling the compressor frequency of the heat source unit to increase; When the target condensing temperature is lower than the current saturated condensing temperature, the compressor frequency of the heat source unit is controlled to decrease.

18. The control method of HVAC equipment according to claim 1, characterized in that: The step of controlling the working state of the heat source unit according to the first temperature includes: When the first temperature is greater than or equal to a first preset control temperature, a high temperature protection mode is executed on the phase change module through the heat source unit; When the first temperature is lower than a second preset control temperature, the phase change energy storage module exits the high temperature protection mode through the heat source unit; The first preset control temperature is the difference between the failure temperature of the phase change material and a first temperature coefficient, the second preset control temperature is the difference between the failure temperature and a second temperature coefficient, and the first temperature coefficient is smaller than the second temperature coefficient.

19. The control method of HVAC equipment according to claim 18, characterized in that: The step of executing a high temperature protection mode on the phase change module by the heat source unit comprises: The heat source unit is controlled to supply water and cool the phase change energy storage module, and the heat source unit is controlled to perform frequency reduction processing.

20. The control method of HVAC equipment according to claim 19, characterized in that: The heat source unit includes a water pump and a compressor, and the controlling the heat source unit to supply water and cool the phase change energy storage module, and the controlling the heat source unit to perform frequency reduction processing, include: The water pump is controlled based on the maximum water output to supply water and cool the phase change energy storage module, and the compressor is frequency-reduced based on a preset cycle and a preset adjustment frequency.

21. A phase change energy storage module, characterized in that: include: A shell, wherein a heat exchange module and a phase change material are arranged in the shell, the heat exchange module is buried in the phase change material, and the heat exchange module is thermally connected to the phase change material; A temperature sensing component is inserted into the phase change material to a preset depth, wherein the temperature sensing component is used to monitor the temperature at a temperature monitoring point set in the phase change energy storage module.

22. The phase change energy storage module according to claim 21, characterized in that: The temperature sensing component comprises: A support plate, disposed on the heat exchange module, and the support plate has an assembly hole; A blind tube, inserted into the assembly hole and used to extend into the phase change material, wherein the inner wall surface of the blind tube is provided with a positioning structure; The temperature sensing detector comprises a temperature sensing probe arranged inside the blind tube, wherein the temperature sensing probe cooperates with the positioning structure to limit a preset depth of the temperature sensing probe inserted into the phase change material.

23. The phase change energy storage module according to claim 22, characterized in that: The positioning structure comprises a positioning protrusion arranged on the inner wall surface of the blind tube, and the temperature sensing probe is engaged with or abuts against the positioning protrusion.

24. The phase change energy storage module according to claim 23, characterized in that: The positioning protrusions are arranged to extend in a circle along the circumference of the blind tube; or, The plurality of positioning protrusions are sequentially spaced apart along the circumference of the blind tube.

25. The phase change energy storage module according to claim 22, characterized in that: The temperature detector also includes a sensor wire body, which is partially inserted into the blind tube and connected to the temperature sensing probe, and an outer wall surface of the sensor wire body is provided with an in-position indicator. When the temperature sensing probe cooperates with the positioning structure, the in-position indicator is located at the pipe mouth of the blind tube.

26. The phase change energy storage module according to claim 22, characterized in that: The temperature sensing component also includes heat-conducting oil, which is arranged inside the blind pipe and immerses the temperature sensing probe.

27. A control device for HVAC equipment, characterized in that: A heat source unit applied to a HVAC system, the HVAC system comprising a heat source unit and a phase change energy storage module, the phase change energy storage module being connected to the heat source unit, the phase change energy storage module comprising a phase change material, and the control device of the HVAC equipment comprising: A determining unit, configured to determine a first temperature distribution region and a second temperature distribution region of the phase change material, wherein a temperature of the first temperature distribution region is greater than a temperature of the second temperature distribution region; an acquisition unit, configured to acquire a first temperature corresponding to the first temperature distribution region, and acquire a second temperature corresponding to the second temperature distribution region; A control unit is used to control the working state of the heat source unit according to the first temperature, or to control the working state of the heat source unit according to the second temperature.

28. A HVAC system, characterized in that: The HVAC system includes: a heat source unit, the heat source unit comprising a controller; A phase-change energy storage module, the phase-change energy storage module is connected to the heat source unit, and the phase-change energy storage module includes a phase-change material; Wherein: the controller is used for: Determining a first temperature distribution region and a second temperature distribution region of the phase change material, wherein a temperature of the first temperature distribution region is greater than a temperature of the second temperature distribution region; Acquire a first temperature corresponding to the first temperature distribution area, and acquire a second temperature corresponding to the second temperature distribution area; The operating state of the heat source unit is controlled according to the first temperature, or the operating state of the heat source unit is controlled according to the second temperature.

29. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed on a computer, the computer is enabled to execute the control method for HVAC equipment according to any one of claims 1 to 20.

30. A HVAC device, comprising a processor and a memory, wherein the memory stores a computer program, characterized in that: The processor is used to execute the control method of the HVAC equipment according to any one of claims 1 to 20 by calling the computer program.

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