Control method of environment adjusting equipment, environment adjusting equipment and storage medium

Abstract

The invention discloses a control method of environment adjusting equipment, the environment adjusting equipment and a storage medium. The environment adjusting equipment comprises a heat pump system, and the method comprises the steps that when a compressor of the heat pump system is started after being shut down, the shut-down type before the compressor is started is obtained; the target frequency of the compressor is determined according to the shutdown type; and controlling the compressor to operate at the target frequency. The invention aims to reduce indoor temperature fluctuation and reduce system energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental conditioning equipment, and in particular to a control method of environmental conditioning equipment, an environmental conditioning equipment and a storage medium. Background Art

[0002] Most environmental conditioning equipment is equipped with a heat pump system to provide the required cooling or heating for indoor environmental conditioning. Among them, the heat pump system is generally pre-set with a fixed compressor start frequency platform. When the compressor is restarted after the system reaches the temperature and stops, the compressor will run at a fixed frequency, which will cause the compressor output capacity to be inconsistent with the actual demand, causing the compressor to start and stop frequently, causing large fluctuations in indoor temperature and high system energy consumption. Summary of the invention

[0003] The main purpose of the present invention is to provide a control method of an environmental conditioning device, an environmental conditioning device and a storage medium, aiming to reduce indoor temperature fluctuations and reduce system energy consumption.

[0004] To achieve the above object, the present invention provides a control method for an environment conditioning device, wherein the environment conditioning device includes a heat pump system, and the control method for the environment conditioning device includes the following steps:

[0005] When the compressor of the heat pump system is started after being stopped, obtaining the shutdown type of the compressor;

[0006] determining a target frequency of the compressor according to the shutdown type;

[0007] The compressor is controlled to operate at the target frequency.

[0008] Optionally, the step of determining the target frequency of the compressor according to the shutdown type includes:

[0009] determining the target frequency according to the shutdown type, the first frequency of the compressor, and the second frequency of the compressor;

[0010] The first frequency is related to the energy demand parameter of the heat pump system, and the second frequency is the operating frequency before the compressor is shut down.

[0011] Optionally, the step of determining the target frequency according to the shutdown type, the first frequency of the compressor, and the second frequency of the compressor includes:

[0012] When the shutdown type includes a first type, determining the target frequency according to the first frequency;

[0013] When the shutdown type includes the second type, determining the target frequency according to the first frequency and the second frequency;

[0014] Among them, the energy demand change value of the heat pump system after shutdown corresponding to the first type is greater than or equal to a preset value, and the energy demand change value of the heat pump system after shutdown corresponding to the second type is less than a preset value.

[0015] Optionally, the first type includes shutting down in response to a user instruction or shutting down when the operation mode of the heat pump system is switched;

[0016] And / or, the second type includes shutdown due to temperature reaching or shutdown due to failure.

[0017] Optionally, the environment conditioning device includes a refrigerant circulation system, the refrigerant circulation system includes a heat exchange module, the heat exchange module is heat-exchange connected to the heat pump system, and before the step of determining the target frequency of the compressor according to the shutdown type, it also includes:

[0018] When the compressor is started after being stopped, obtaining the liquid inlet temperature and liquid outlet temperature of the heat exchange module;

[0019] Determining the energy requirement parameter according to the liquid inlet temperature and the liquid outlet temperature;

[0020] The first frequency is determined according to the energy demand parameter.

[0021] Optionally, the step of determining the energy requirement parameter according to the liquid inlet temperature and the liquid outlet temperature includes:

[0022] Determine a first temperature difference between the liquid outlet temperature and the liquid inlet temperature, and determine a second temperature difference between the liquid outlet temperature and a target coolant temperature of the coolant circulation system;

[0023] The energy demand parameter is determined according to the first temperature difference value, the second temperature difference value, and a rated capacity value of the heat pump system.

[0024] Optionally, the step of determining the first frequency according to the energy demand parameter includes:

[0025] The first frequency is determined according to the energy demand parameter and the ambient temperature of the environment where the heat pump system is located.

[0026] Optionally, the control method of the environment conditioning device further includes: obtaining a temperature change value of the environment where the heat pump system is located after the compressor is stopped;

[0027] The step of determining the target frequency according to the first frequency and the second frequency comprises:

[0028] Determine the target frequency according to the temperature change value, the first frequency, and the second frequency

[0029] Optionally, the step of determining the target frequency according to the temperature change value, the first frequency and the second frequency includes:

[0030] When the temperature change value is less than or equal to a preset value, determining that the minimum value between the first frequency and the second frequency is the target frequency;

[0031] When the temperature change value is greater than the preset value, the first frequency is determined to be the target frequency.

[0032] Optionally, after the step of determining the target frequency of the compressor according to the shutdown type, the method further includes:

[0033] When the target frequency is less than the minimum frequency of the compressor, controlling the compressor to operate at the minimum frequency;

[0034] When the target frequency is greater than the maximum frequency of the compressor, controlling the compressor to operate at the maximum frequency;

[0035] When the target frequency is greater than or equal to the minimum frequency and less than or equal to the maximum frequency, the compressor is controlled to operate at the target frequency.

[0036] In addition, in order to achieve the above-mentioned purpose, the present application also proposes an environmental conditioning device, which includes a heat pump system and a control device, the heat pump system is connected to the control device, and the control device includes: a memory, a processor, and a control program of the environmental conditioning device stored in the memory and executable on the processor, and when the control program of the environmental conditioning device is executed by the processor, the steps of the control method of the environmental conditioning device as described in any one of the above items are implemented.

[0037] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of an environmental conditioning device is stored. When the control program of the environmental conditioning device is executed by a processor, the steps of the control method of the environmental conditioning device as described in any of the above items are implemented.

[0038] The present invention proposes a control method for environmental conditioning equipment. When the compressor of a heat pump system is restarted after being shut down, the method determines the target frequency of the compressor when it is started according to the shutdown type of the compressor. In this process, the running frequency of the compressor when it is restarted after being shut down is no longer a fixed frequency, but is determined according to the shutdown type. Since different shutdown types have different requirements on the output capacity of the compressor after restarting, the target frequency of the compressor operation is determined according to the shutdown type, which can ensure that the output capacity of the compressor when it is restarted after being shut down is accurately matched with the actual demand, thereby avoiding frequent starting and stopping of the compressor, reducing indoor temperature fluctuations, and reducing system energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the system structure of an embodiment of an environmental conditioning device of the present invention;

[0040] Figure 2 A schematic diagram of the hardware structure involved in the operation of an embodiment of an environment adjustment device of the present invention;

[0041] Figure 3 A schematic flow chart of an embodiment of a control method for an environmental conditioning device of the present invention;

[0042] Figure 4 A schematic flow chart of another embodiment of a control method for an environment conditioning device of the present invention;

[0043] Figure 5 This is a flow chart of another embodiment of the control method of the environmental conditioning device of the present invention.

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0046] An embodiment of the present invention provides an environment adjustment device, which is specifically used to adjust the temperature of an indoor environment.

[0047] In the embodiment of the present invention, refer to Figure 1 and Figure 2 The environmental conditioning device includes a heat pump system 2 and a control device 1 , and the heat pump system 2 is connected to the control device 1 .

[0048] In this embodiment, the heat pump system 2 includes a refrigerant circulation loop, which includes a compressor 21, a first heat exchanger 22, a throttling device 23 and a second heat exchanger 24. The heat pump system 2 can have two operating modes: a cooling mode and a heating mode. When the heat pump system 2 operates in the cooling mode, the second heat exchanger 24 is in an evaporating state and absorbs heat. When the heat pump system 2 operates in the heating mode, the second heat exchanger 24 is in a condensing state and releases heat.

[0049] The heat pump system 2 may further include a reversing assembly 25, the exhaust port of the compressor, the return air port of the compressor, the first heat exchanger 22 and the second heat exchanger 24 are all connected to the reversing assembly 25, and the reversing assembly 25 has a first state and a second state. When the reversing assembly 25 operates in the first state, the exhaust port is connected to the first heat exchanger 22, and the return air port is connected to the second heat exchanger 24; when the reversing assembly 25 operates in the second state, the exhaust port is connected to the second heat exchanger 24, and the return air port is connected to the first heat exchanger 22. The reversing assembly 25 can realize the switching of the heat pump system between heating operation and cooling operation.

[0050] In this embodiment, the environment conditioning device further includes a refrigerant circulation system 3 connected to the heat pump system 2. The refrigerant circulation system 3 is connected to the control device 1. The refrigerant circulation system 3 transmits the energy output by the heat pump system to the indoor space through the circulation of the refrigerant to adjust the temperature of the indoor space. The heat pump system 2 is used to provide energy (such as cold or heat) for the heat exchange between the refrigerant circulation system 3 and the indoor space.

[0051] In this embodiment, the brine circulation system 3 is a water system, and the heat pump system 2 is used to adjust the water supply temperature of the brine circulation system 3. The brine circulation system 3 can adjust the indoor temperature using the indoor terminal equipment. In the embodiment of the present invention, the water supply temperature of the brine circulation system 3 can be understood as the outlet water temperature of the heat pump system 2. In other embodiments, the brine circulation system 3 can also be a system that uses a brine to transmit energy, such as an ethanol solution.

[0052] In this embodiment, the heat pump system 2 is an air source heat pump system 2. In other embodiments, the heat pump system 2 may also be a water source heat pump system, a ground source heat pump system, or a dual source heat pump system.

[0053] The refrigerant circulation system 3 includes a medium circulation loop and an indoor terminal device and a heat exchange module arranged in the medium circulation loop, and the heat exchange module is connected to the heat pump system 2 for heat exchange. Specifically, the second heat exchanger 24 is connected to the heat exchange module in the refrigerant circulation system 3 for heat exchange. The second heat exchanger 24 and the heat exchange module can be a shell and tube heat exchanger or a plate heat exchanger.

[0054] The medium circulation loop has an inlet and an outlet, the inlet of the medium circulation loop is connected to the outlet of the heat exchange module, and the outlet of the medium circulation loop is connected to the inlet of the heat exchange module. The cold or heat of the refrigerant in the medium circulation loop can be released to the indoor space where it is located at the indoor terminal device.

[0055] There may be one or more than one indoor terminal device, and more than one indoor terminal device may be distributed in different indoor spaces. The heat exchange types of the indoor terminal devices in different indoor spaces may be the same or different. Based on this, the cold or heat carried by the medium in the medium circulation loop can be used to adjust the ambient temperature of more than one indoor space.

[0056] In this embodiment, the indoor terminal device is a radiation terminal device, such as a radiation panel, a capillary network, etc. The radiation terminal device can be installed on the wall surface of the indoor space (including the wall surface and / or the ground, etc.). In other embodiments, the indoor terminal device can also be a convection heat exchange device. For example, the indoor terminal device may include a fan coil, a floor heating coil, a fan disc or a heat sink, etc.

[0057] During the operation of the heat pump system 2, the water in the heat exchange module can absorb the cold or heat released by the second heat exchanger 24 to form cold water or hot water. The medium carrying cold or heat flowing out of the heat exchange module can enter the medium circulation loop and flow to the indoor terminal device to release the cold or heat into the air of the indoor space to adjust the ambient temperature of the indoor space. The medium after releasing the cold or heat can re-enter the heat exchange module to exchange heat with the second heat exchanger 24, and the medium after heat exchange can re-enter the medium circulation loop to exchange heat, and so on, so as to realize the adjustment of the indoor space temperature by the environmental conditioning device.

[0058] When the heat pump system 2 is in cooling operation, the second heat exchanger 24 is in an evaporating state. The medium in the heat exchange module absorbs the cold output by the second heat exchanger 24 and its temperature decreases to form a medium that carries cold. The medium that carries cold enters the medium circulation loop and flows to the indoor terminal equipment, releasing cold to the indoor space, and the ambient temperature of the indoor space decreases.

[0059] When the heat pump system 2 is in heating operation, the second heat exchanger 24 is in a condensing state. The medium in the heat exchange module absorbs the heat output by the second heat exchanger 24 and its temperature rises to form a heat-carrying medium. The heat-carrying medium enters the medium circulation loop and flows to the indoor terminal device, releasing heat to the indoor space, and the ambient temperature of the indoor space rises.

[0060] In other embodiments, the environment conditioning device may not be provided with the refrigerant circulation system 3, and the second heat exchanger 24 of the heat pump system 2 may be directly provided in the indoor space for indoor air heat exchange. Specifically, the second heat exchanger 24 may be provided corresponding to the indoor fan, and when the indoor fan is turned on, the indoor air may be driven to exchange heat with the second heat exchanger 24. The number of the second heat exchangers 24 may be more than one, and different second heat exchangers 24 may be provided in different indoor spaces.

[0061] Furthermore, the refrigerant circulation system 3 also includes a fluid regulating module, which is connected to the control device 1. The fluid regulating module 4 can be used to adjust the distribution, flow regulation and control of the supply and return liquid in the refrigerant circulation system 3. Specifically, the heat exchange module and the indoor terminal device are both connected to the fluid regulating module. In this embodiment, the number of indoor terminal devices is at least two, and at least two indoor terminal devices and the heat exchange module are connected to the fluid regulating module. The fluid regulating module includes at least two fluid valves, and the fluid valves are connected to the indoor terminal devices one by one. In this embodiment, the fluid regulating module is a manifold. In other embodiments, the fluid regulating module may also be a circulating pump.

[0062] Further, in this embodiment, referring to Figure 2 The control device 1 can also be connected to the environment detection module 5, which may include an indoor temperature sensor and / or an outdoor temperature sensor. The indoor temperature sensor can detect the ambient temperature of the indoor space regulated by the environment conditioning device; the outdoor temperature sensor can detect the ambient temperature of the outdoor space where the environment conditioning device is located.

[0063] Further, in this embodiment, referring to Figure 2 The control device 1 can also be connected to a temperature detection module 6, which is arranged in the coolant circulation system 3 to detect the coolant temperature. The temperature detection module 6 includes a first temperature sensor and a second temperature sensor. The first temperature sensor is arranged at the inlet of the heat exchange module to detect the inlet temperature of the heat exchange module, and the second temperature sensor is arranged at the outlet of the heat exchange module to detect the outlet temperature of the heat exchange module.

[0064] In the embodiment of the present invention, refer to Figure 2 The control device 1 of the environment conditioning device includes: a processor 1001 (such as a CPU), a memory 1002, a timer 1003, etc. The various components in the control device 1 are connected via a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0065] Those skilled in the art will understand that Figure 2 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0066] like Figure 2 As shown, the memory 1002 as a storage medium may include a control program of the environment adjustment device. Figure 2In the device shown, the processor 1001 can be used to call the control program of the environmental conditioning device stored in the memory 1002 and execute the relevant step operations of the control method of the environmental conditioning device in the following embodiments.

[0067] An embodiment of the present invention also provides a method for controlling an environment conditioning device.

[0068] Reference Figure 3 , an embodiment of a control method of an environmental conditioning device of the present application is proposed. In this embodiment, the control method of the environmental conditioning device includes:

[0069] Step S10, when the compressor of the heat pump system is started after being shut down, obtaining the shutdown type of the compressor;

[0070] The shutdown type is specifically the type of the last shutdown before the current startup. The shutdown type is specifically divided based on the triggering reason of the compressor shutdown, and different triggering reasons correspond to different shutdown types. In this embodiment, the shutdown type includes one of the following types: shutdown in response to a user instruction, shutdown when the operation mode of the heat pump system is switched, shutdown due to reaching a temperature, shutdown due to a fault, and the like.

[0071] The shutdown type of the compressor can be determined by obtaining the operating parameters within a preset time period before the compressor stops, or by reading the identification information of the shutdown type generated and recorded when the compressor stops.

[0072] Step S20, determining the target frequency of the compressor according to the shutdown type;

[0073] In one implementation, a reference frequency is determined according to a shutdown type, different shutdown types correspond to different reference frequencies of the compressor, and a target frequency is determined according to the reference frequency. Specifically, when the shutdown type is the first type, the target frequency is determined according to the first reference frequency; when the shutdown type is the second type, the target frequency is determined according to the second reference frequency.

[0074] In another implementation, the frequency determination method is determined according to the shutdown type, different shutdown types may correspond to different frequency determination methods, and the target frequency is determined according to the frequency determination method. Specifically, when the shutdown type is the first type, the target frequency is determined according to the first frequency determination method; when the shutdown type is the second type, the target frequency is determined according to the second frequency determination method.

[0075] In yet another implementation, different shutdown types correspond to different preset frequencies, and the preset frequency corresponding to the current shutdown type is determined as the target frequency.

[0076] Step S30, controlling the compressor to operate at the target frequency.

[0077] Specifically, the compressor is controlled to increase the frequency to the target frequency. The compressor frequency increase rate can be a preset fixed rate or a rate determined according to the actual operating conditions of the environmental conditioning equipment. For example, the frequency increase rate can be determined according to the shutdown type and / or the shutdown time before startup.

[0078] A control method for an environmental conditioning device is proposed in an embodiment of the present invention. When the compressor of a heat pump system is restarted after being shut down, the method determines the target frequency of the compressor when it is started according to the shutdown type of the compressor. In this process, the running frequency of the compressor when it is restarted after being shut down is no longer a fixed frequency, but is determined according to the shutdown type. Since different shutdown types have different requirements for the output capacity of the compressor after restarting, the target frequency of the compressor operation is determined according to the shutdown type, which can ensure that the output capacity of the compressor when it is restarted after being shut down is accurately matched with the actual demand, thereby avoiding frequent starting and stopping of the compressor, reducing indoor temperature fluctuations, and reducing system energy consumption.

[0079] Further, based on the above embodiment, another embodiment of the control method of the environmental conditioning device of the present application is proposed. In this embodiment, referring to Figure 4 , the step S20 comprises:

[0080] Step S21, determining the target frequency according to the shutdown type, the first frequency of the compressor, and the second frequency of the compressor;

[0081] The first frequency is related to the energy demand parameter of the heat pump system, and the second frequency is the operating frequency before the compressor is shut down.

[0082] The energy demand parameter here is specifically the energy demand parameter of the heat pump system when the compressor starts. When the compressor starts, the first frequency can be determined according to the acquired energy demand parameter. Different energy demand parameters correspond to different first frequencies. The first frequency is positively correlated with the energy demand represented by the energy demand parameter. Specifically, the first frequency can be calculated by substituting the energy demand parameter into a preset formula, or the first frequency can be determined according to the parameter interval by determining the parameter interval where the energy demand parameter is located.

[0083] In this embodiment, the second frequency is the real-time frequency of the compressor at the time when the shutdown operation is triggered during the operation phase of the compressor before the last shutdown. In other embodiments, the second frequency may also be the maximum frequency, minimum frequency, or average frequency reached during the operation phase of the compressor before the last shutdown.

[0084] In one implementation, different shutdown types can be characterized by different characteristic values, and a quantitative relationship between the characteristic value, the first frequency, the second frequency and the target frequency is pre-established. The characteristic value, the first frequency and the second frequency corresponding to the current shutdown type are substituted into the quantitative relationship to calculate the target frequency.

[0085] In another implementation, at least one of the first frequency and the second frequency is determined as a reference frequency according to the shutdown type, different shutdown types may correspond to different reference frequencies, and the target frequency may be determined according to the reference frequency. When there is one reference frequency, the reference frequency is determined as the target frequency; when there are more than one reference frequencies, one of the more than one reference frequencies may be selected as the target frequency according to a preset rule, or the target frequency may be calculated using more than one reference frequencies.

[0086] In this embodiment, the target frequency required for the compressor to run when it is currently started is determined in combination with the actual energy demand of the heat pump system, the operating conditions of the compressor before shutdown, and the shutdown type, thereby further improving the accuracy of the target frequency, ensuring that the target frequency can accurately meet the actual operating needs of the heat pump system, and ensuring that after the compressor is currently started and the frequency is increased to the target frequency, the target frequency can meet the energy demand while not being too large, which can further ensure that the indoor temperature is stable and comfortable while reducing the energy consumption of the heat pump system.

[0087] Further, in the present embodiment, the step of determining the target frequency according to the shutdown type, the first frequency of the compressor and the second frequency of the compressor includes: when the shutdown type includes the first type, determining the target frequency according to the first frequency; when the shutdown type includes the second type, determining the target frequency according to the first frequency and the second frequency; wherein the energy demand change value of the heat pump system after the shutdown corresponding to the first type is greater than or equal to a preset value, and the energy demand change value of the heat pump system after the shutdown corresponding to the second type is less than a preset value.

[0088] In this embodiment, the first type includes shutdown in response to a user instruction or shutdown when the operation mode of the heat pump system is switched. The second type includes shutdown due to reaching a temperature or shutdown due to a fault.

[0089] The shutdown in response to a user instruction refers to a situation where the environmental conditioning device triggers the compressor to shut down after receiving a user instruction.

[0090] The shutdown of the heat pump system when switching the operating mode refers to the situation where the compressor needs to be shut down to cooperate in the process of switching the heat pump system between different operating modes.

[0091] The temperature shutdown is specifically a shutdown condition triggered when the temperature adjusted by the heat pump system reaches the target temperature. In this embodiment, the heat pump system is connected to the refrigerant circulation system for heat exchange, and the temperature shutdown specifically refers to the compressor shutdown triggered when the refrigerant temperature in the refrigerant circulation system reaches the target refrigerant temperature.

[0092] Fault shutdown refers to the situation where the environmental conditioning equipment fails or has the risk of failure and the compressor needs to be shut down to protect the equipment.

[0093] In the process of determining the target frequency according to the first frequency, the first frequency may be determined as the target frequency. Alternatively, the target frequency may be obtained by correcting the first frequency according to the frequency correction value, where the frequency correction value may be a preset fixed value or a value determined according to the actual operation of the heat pump system, for example, the frequency correction value may be determined according to the temperature difference between the current indoor temperature of the indoor space adjusted by the environmental adjustment device and the set temperature.

[0094] In the process of determining the target frequency according to the first frequency and the second frequency, one of the first frequency and the second frequency may be selected as the target frequency according to a preset rule, or the target frequency may be calculated by combining the first frequency and the second frequency.

[0095] In this embodiment, when the shutdown type is the first type, for example, when the compressor shuts down in response to a user instruction or shuts down when the operation mode needs to be switched, it indicates that the energy demand of the heat pump system has a significant change after the compressor stops. At this time, the target frequency of the compressor operation is determined according to the first frequency determined by the energy demand parameter, which is conducive to ensuring that the output capacity of the compressor can accurately meet the actual energy demand, so as to effectively ensure the indoor comfort during the compressor startup phase. When the shutdown type is the second type, for example, when the compressor stops due to reaching the temperature or a fault, it indicates that the energy demand after the compressor stops changes little. At this time, the target frequency is determined by combining the first frequency and the second frequency, which is conducive to ensuring that the compressor operation can meet the output capacity required for indoor comfort while avoiding excessive frequency, so as to avoid frequent start and stop of the compressor while saving energy consumption.

[0096] Further, based on any of the above embodiments, another embodiment of the control method of the environmental conditioning device of the present application is proposed. In this embodiment, the environmental conditioning device includes a refrigerant circulation system, the refrigerant circulation system includes a heat exchange module, and the heat exchange module is connected to the heat pump system for heat exchange. Figure 5 , before the step of determining the target frequency of the compressor according to the shutdown type, it also includes:

[0097] Step S01, when the compressor is started after being stopped, obtaining the liquid inlet temperature and liquid outlet temperature of the heat exchange module;

[0098] The liquid inlet temperature and liquid outlet temperature here can be obtained by respectively obtaining the temperature data detected in real time by the first temperature sensor and the second temperature sensor when the compressor is started.

[0099] Step S02, determining the energy requirement parameter according to the liquid inlet temperature and the liquid outlet temperature;

[0100] Different inlet temperatures and outlet temperatures correspond to different energy demand parameters. Specifically, a correspondence between the inlet temperature, outlet temperature and energy demand parameters can be established in advance, and the correspondence can include a calculation relationship or a mapping relationship, etc. Based on the correspondence, the energy demand parameters corresponding to the current inlet temperature and outlet temperature can be determined.

[0101] In one implementation, the energy requirement parameter may be determined based on the temperature difference between the inlet temperature and the outlet temperature. In another implementation, the energy requirement parameter may be calculated by substituting the inlet temperature and the outlet temperature into a preset formula. In yet another implementation, a first temperature interval in which the inlet temperature is located may be determined, a second temperature interval in which the outlet temperature is located may be determined, and the energy requirement parameter may be determined based on the first temperature interval and the second temperature interval.

[0102] Step S03: determining the first frequency according to the energy demand parameter.

[0103] Different energy demand parameters correspond to different first frequencies. Among them, at least two parameter intervals can be pre-set, different parameter intervals are associated with different preset frequencies, the parameter interval in which the energy demand parameter is located is determined, and the preset frequency associated with the parameter interval is determined as the first frequency. Alternatively, the energy demand parameter can be substituted into a preset formula to calculate the first frequency.

[0104] The correspondence between the energy demand parameter and the first frequency may be a preset fixed relationship, or a relationship obtained according to the actual operating conditions of the environmental conditioning device. For example, the target correspondence between the energy demand parameter and the first frequency may be obtained according to the shutdown type, the environmental parameters of the environment where the environmental conditioning device is located, the number of indoor terminal devices currently in the heat exchange state in the refrigerant circulation system, etc., and the first frequency corresponding to the current energy demand parameter may be determined based on the target correspondence.

[0105] It should be noted that when the compressor is started after being shut down, there is no specific limitation on the order in which the process of obtaining the inlet liquid temperature and the outlet liquid temperature, and the process of determining the first frequency based on the inlet liquid temperature and the outlet liquid temperature are executed with the above-mentioned step of obtaining the shutdown type.

[0106] In this embodiment, the above method is helpful to accurately determine the energy demand state of the heat pump system, thereby improving the accuracy of the first frequency to achieve the accuracy of the compressor frequency control in the startup phase after the compressor is shut down, further ensuring indoor comfort while reducing energy consumption.

[0107] Furthermore, in this embodiment, the step of determining the energy requirement parameter based on the inlet liquid temperature and the outlet liquid temperature includes: determining a first temperature difference between the outlet liquid temperature and the inlet liquid temperature, determining a second temperature difference between the outlet liquid temperature and a target refrigerant temperature of the refrigerant circulation system; and determining the energy requirement parameter based on the first temperature difference, the second temperature difference and the rated capacity value of the heat pump system.

[0108] The rated capacity value includes the rated cooling capacity or the rated heating capacity, etc. The rated capacity value may be different in different operating modes of the heat pump system.

[0109] Different first temperature difference values, second temperature difference values ​​and rated capacity values ​​correspond to different energy demand parameters. In this embodiment, the first temperature difference value, the second temperature difference value and the rated capacity value are all positively correlated with the energy demand parameter.

[0110] In one implementation, the energy demand parameter is calculated by substituting the first temperature difference value, the second temperature difference value and the rated capacity value into a preset formula. For example, the preset formula is Qwn=Qwcrating*K1*K2, wherein Qwn is the energy demand parameter, Qwcrating is the rated capacity value, K1 is the first temperature difference value, and K2 is the second temperature difference value.

[0111] In another implementation, the first interval where the first temperature difference value is located and the second interval where the second temperature difference value is located can also be determined, the first correction value corresponding to the first interval can be determined, and the second correction value corresponding to the second interval can be determined, and the energy demand parameter can be obtained by correcting the rated capacity value according to the first correction value and the second correction value.

[0112] In this embodiment, the energy demand parameter is determined in combination with the first temperature difference value, the second temperature difference value and the rated capacity value, which is beneficial to further improve the accuracy of the capacity demand of the heat pump system represented by the energy demand parameter, thereby improving the accuracy of frequency control during the compressor startup phase, so as to ensure precise control of the indoor temperature while reducing the energy consumption of the compressor.

[0113] Furthermore, in this embodiment, the step of determining the first frequency according to the energy demand parameter includes: determining the first frequency according to the energy demand parameter and the ambient temperature of the environment where the heat pump system is located.

[0114] The ambient temperature includes indoor ambient temperature and / or outdoor ambient temperature.

[0115] Different energy demand parameters and different ambient temperatures correspond to different first frequencies. In one implementation, the first frequency is determined according to the parameter interval of the energy demand parameter and the temperature interval of the ambient temperature. In another implementation, the energy demand parameter and the ambient temperature can be substituted into the formula to calculate the first frequency. In yet another implementation, the first coefficient and the second coefficient can be determined in the interval where the ambient temperature is located, and the first frequency is calculated according to the first coefficient, the second coefficient and the energy demand parameter.

[0116] The corresponding relationship between the energy demand parameter, the ambient temperature and the first frequency may be a preset fixed relationship, or a relationship obtained according to the actual operating conditions of the environmental regulation device. For example, the target corresponding relationship between the energy demand parameter, the ambient temperature and the first frequency may be obtained according to the shutdown type, the number of indoor terminal devices currently in the heat exchange state in the refrigerant circulation system, and the indoor and outdoor temperature difference, and the first frequency corresponding to the current energy demand parameter and the ambient temperature may be determined based on the target corresponding relationship.

[0117] In this embodiment, the first frequency is determined in combination with the energy demand parameters and the ambient temperature, which is conducive to ensuring that the actual output capacity of the compressor under the current environmental conditions when operating at the first frequency can be accurately matched with the actual energy demand while ensuring stable and reliable operation of the compressor, so as to meet indoor comfort while improving system energy efficiency and compressor operation reliability.

[0118] In other embodiments, the first frequency may also be directly determined as the target frequency.

[0119] Furthermore, in this embodiment, the control method of the environmental conditioning equipment also includes: obtaining the temperature change value of the environment in which the heat pump system is located after the compressor is shut down; the step of determining the target frequency based on the first frequency and the second frequency includes: determining the target frequency based on the temperature change value, the first frequency and the second frequency.

[0120] In this embodiment, the first ambient temperature of the environment where the heat pump system is located when the compressor starts and the second ambient temperature of the environment where the heat pump system is located when the compressor stops before starting are obtained, and the absolute value of the difference between the first ambient temperature and the second ambient temperature is determined as the temperature change value here.

[0121] Different temperature change values, first frequencies, and second frequencies correspond to different target frequencies.

[0122] In one implementation, a relationship between the temperature change value, the first frequency, the second frequency and the target frequency is pre-established, and the temperature change value, the first frequency and the second frequency are substituted into the relationship to calculate the target frequency.

[0123] In one implementation, one of the first frequency and the second frequency may be selected as the target frequency according to the temperature change value.

[0124] In one implementation, the target frequency may be determined according to a temperature change value, a magnitude relationship or a quantity relationship value between the first frequency and the second frequency.

[0125] In one implementation, a first weight of the first frequency and a second weight of the second frequency may be determined according to the temperature change value, and the target frequency may be obtained by weightedly averaging the first frequency and the second frequency according to the first weight and the second weight.

[0126] In this embodiment, the temperature change value can accurately reflect the change in indoor temperature after the compressor is shut down. Determining the target frequency in combination with the temperature change value, the first frequency and the second frequency is helpful to ensure that the output capacity of the compressor during the startup phase can be accurately matched with the indoor temperature comfort requirements, thereby effectively improving indoor comfort.

[0127] Furthermore, in this embodiment, the step of determining the target frequency based on the temperature change value, the first frequency and the second frequency includes: when the temperature change value is less than or equal to a preset value, determining the minimum value of the first frequency and the second frequency as the target frequency; when the temperature change value is greater than the preset value, determining the first frequency as the target frequency.

[0128] In this embodiment, when the temperature change from the compressor shutdown to the current startup is small, it indicates that the energy demand is small. At this time, the minimum value of the first frequency and the second frequency is determined as the target frequency, which can ensure the accuracy of indoor temperature control and avoid frequent start and stop of the compressor due to a large startup frequency, effectively improve the indoor comfort during the compressor startup phase while reducing the energy consumption of the compressor. When the temperature change from the compressor shutdown to the current startup is large, it indicates that the energy demand is large. At this time, using the first frequency as the target frequency is conducive to ensuring that the compressor startup frequency is accurately matched with the energy demand, thereby further improving the indoor temperature comfort.

[0129] Further, based on any of the above embodiments, another embodiment of the control method of the environmental conditioning device of the present application is proposed. In this embodiment, after step S20, it also includes: when the target frequency is less than the minimum frequency of the compressor, controlling the compressor to operate at the minimum frequency; when the target frequency is greater than the maximum frequency of the compressor, controlling the compressor to operate at the maximum frequency; when the target frequency is greater than or equal to the minimum frequency and less than or equal to the maximum frequency, executing step S30.

[0130] In this embodiment, through the above-mentioned method, on the basis of ensuring indoor comfort and reducing the energy consumption of the compressor, the operating frequency of the compressor is ensured to operate between the maximum frequency and the minimum frequency, thereby effectively ensuring the reliability and stability of the compressor operation.

[0131] In addition, an embodiment of the present invention further proposes a storage medium, on which a control program of an environmental conditioning device is stored. When the control program of the environmental conditioning device is executed by a processor, the relevant steps of any embodiment of the control method of the environmental conditioning device as described above are implemented.

[0132] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0133] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0134] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, an environmental conditioning device, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0135] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for an environmental conditioning device, It is characterized in that The environment conditioning device comprises a heat pump system, and the control method of the environment conditioning device comprises the following steps: When the compressor of the heat pump system is started after being stopped, obtaining the shutdown type of the compressor; determining a target frequency of the compressor according to the shutdown type; The compressor is controlled to operate at the target frequency.

2. The control method of the environmental conditioning device according to claim 1, It is characterized in that The step of determining the target frequency of the compressor according to the shutdown type comprises: determining the target frequency according to the shutdown type, the first frequency of the compressor, and the second frequency of the compressor; The first frequency is related to the energy demand parameter of the heat pump system, and the second frequency is the operating frequency before the compressor is shut down.

3. The control method of the environmental conditioning device according to claim 2, It is characterized in that The step of determining the target frequency according to the shutdown type, the first frequency of the compressor, and the second frequency of the compressor comprises: When the shutdown type includes a first type, determining the target frequency according to the first frequency; When the shutdown type includes the second type, determining the target frequency according to the first frequency and the second frequency; Among them, the energy demand change value of the heat pump system after shutdown corresponding to the first type is greater than or equal to a preset value, and the energy demand change value of the heat pump system after shutdown corresponding to the second type is less than a preset value.

4. The control method of the environmental conditioning device according to claim 3, It is characterized in that The first type includes shutting down in response to a user instruction or shutting down when the operation mode of the heat pump system is switched; And / or, the second type includes shutdown due to temperature reaching or shutdown due to failure.

5. The control method of the environmental conditioning device according to claim 2, It is characterized in that The environmental conditioning device includes a refrigerant circulation system, the refrigerant circulation system includes a heat exchange module, the heat exchange module is heat-exchangedly connected to the heat pump system, and before the step of determining the target frequency of the compressor according to the shutdown type, it also includes: When the compressor is started after being stopped, obtaining the liquid inlet temperature and liquid outlet temperature of the heat exchange module; Determining the energy requirement parameter according to the liquid inlet temperature and the liquid outlet temperature; The first frequency is determined according to the energy demand parameter.

6. The control method of the environmental conditioning device according to claim 5, It is characterized in that The step of determining the energy requirement parameter according to the liquid inlet temperature and the liquid outlet temperature comprises: Determine a first temperature difference between the liquid outlet temperature and the liquid inlet temperature, and determine a second temperature difference between the liquid outlet temperature and a target coolant temperature of the coolant circulation system; The energy demand parameter is determined according to the first temperature difference value, the second temperature difference value, and a rated capacity value of the heat pump system.

7. The control method of the environmental conditioning device according to claim 5, It is characterized in that The step of determining the first frequency according to the energy demand parameter comprises: The first frequency is determined according to the energy demand parameter and the ambient temperature of the environment where the heat pump system is located.

8. The control method of the environment conditioning device according to claim 3, It is characterized in that The control method of the environment conditioning device further includes: obtaining a temperature change value of the environment where the heat pump system is located after the compressor is stopped; The step of determining the target frequency according to the first frequency and the second frequency comprises: The target frequency is determined according to the temperature change value, the first frequency, and the second frequency.

9. The control method of the environmental conditioning device according to claim 8, It is characterized in that The step of determining the target frequency according to the temperature change value, the first frequency and the second frequency comprises: When the temperature change value is less than or equal to a preset value, determining that the minimum value between the first frequency and the second frequency is the target frequency; When the temperature change value is greater than the preset value, the first frequency is determined to be the target frequency.

10. The control method of the environmental conditioning device according to any one of claims 1 to 9, It is characterized in that After the step of determining the target frequency of the compressor according to the shutdown type, the method further includes: When the target frequency is less than the minimum frequency of the compressor, controlling the compressor to operate at the minimum frequency; When the target frequency is greater than the maximum frequency of the compressor, controlling the compressor to operate at the maximum frequency; When the target frequency is greater than or equal to the minimum frequency and less than or equal to the maximum frequency, the compressor is controlled to operate at the target frequency.

11. An environmental conditioning device, It is characterized in that The environmental conditioning device includes a heat pump system and a control device, the heat pump system is connected to the control device, and the control device includes: a memory, a processor, and a control program of the environmental conditioning device stored in the memory and executable on the processor, and when the control program of the environmental conditioning device is executed by the processor, the steps of the control method of the environmental conditioning device as described in any one of claims 1 to 10 are implemented.

12. A storage medium, It is characterized in that The storage medium stores a control program of an environmental conditioning device, and when the control program of the environmental conditioning device is executed by a processor, the steps of the control method of the environmental conditioning device according to any one of claims 1 to 10 are implemented.

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