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 conditioning equipment comprises a secondary refrigerant circulating system, the secondary refrigerant circulating system comprises a secondary refrigerant loop and a cleaning device connected with the secondary refrigerant loop, the cleaning device comprises a liquid discharging module, a liquid supplementing module and a flushing module, and the method comprises the steps that when the secondary refrigerant circulating system meets the cleaning condition, the secondary refrigerant circulating system is connected with the cleaning device; the liquid discharging module is controlled to be started; when the operation of the liquid discharging module reaches a first condition, the liquid supplementing module is controlled to be started; when the liquid supplementing module runs to reach a second condition, the flushing module is controlled to drive the secondary refrigerant to flush the secondary refrigerant loop in the first direction; wherein the first direction is opposite to a second direction of flowing of the secondary refrigerant when the secondary refrigerant circulating system operates. The invention aims to improve the cleaning timeliness of the secondary refrigerant circulating system so as to ensure the heat exchange effect of equipment.

Description

Technical Field

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

[0002] A coolant circulation system such as a water circuit system can be provided in environmental conditioning equipment, and the indoor environment is adjusted through indoor terminal equipment provided in the coolant circulation system. Among them, after the coolant circulation system has been used for a long time, there will be more impurities in its coolant circuit, and it needs to be cleaned thoroughly to ensure the heat exchange effect of the equipment.

[0003] However, currently, the cleaning of the coolant circulation system generally can only be carried out by after-sales personnel visiting the site, which is likely to result in untimely cleaning and affect the heat exchange effect of the equipment. Summary of the Invention

[0004] The main object of the present invention is to provide a control method for environmental conditioning equipment, environmental conditioning equipment, and a storage medium, aiming to improve the timeliness of cleaning the coolant circulation system to ensure the heat exchange effect of the equipment.

[0005] To achieve the above object, the present invention provides a control method for environmental conditioning equipment. The environmental conditioning equipment includes a coolant circulation system. The coolant circulation system includes a coolant circuit and a cleaning device connected to the coolant circuit. The cleaning device includes a drainage module, a liquid replenishment module, and a flushing module. The control method for the environmental conditioning equipment includes the following steps:

[0006] When the coolant circulation system meets the cleaning condition, control the drainage module to open;

[0007] When the drainage module operates to reach a first condition, control the liquid replenishment module to open;

[0008] When the liquid replenishment module operates to reach a second condition, control the flushing module to drive the coolant to flush the coolant circuit in a first direction;

[0009] Wherein, the first direction is opposite to the second direction in which the coolant flows when the coolant circulation system operates.

[0010] Optionally, the flushing module further includes a circulation pump and a flow direction switching component provided in the coolant circuit. The circulation pump is used to drive the coolant in the coolant circuit to flow in the second direction. The step of controlling the flushing module to drive the coolant to flush the coolant circuit in a first direction when the liquid replenishment module operates to reach a second condition includes:

[0011] When the liquid replenishment module operates to reach the second condition, control the circulation pump to start, and control the flow direction switching component to operate so that the coolant in the coolant circuit flows in the first direction.

[0012] Optionally, after the step of controlling the circulation pump to start and controlling the flow direction switching component to operate so that the coolant in the coolant circuit flows in the first direction, the method further includes:

[0013] When the cleaning device operates to meet the cleaning end condition, control the flow direction switching component to operate to allow the coolant in the coolant circuit to flow in the second direction.

[0014] Optionally, the cleaning end condition includes at least one of the following conditions:

[0015] The pH value of the coolant in the coolant circuit is within a second preset numerical range;

[0016] The solid concentration in the coolant in the coolant circuit is less than or equal to a first preset concentration;

[0017] The total cleaning duration of the coolant circuit is greater than or equal to a first preset duration.

[0018] Optionally, the flow direction switching component includes a first control valve, a second control valve, and a third control valve. The first end of the first control valve is communicated with the liquid outlet end of the circulation pump. The pipeline between the first control valve and the circulation pump is communicated with one end of the second control valve. The liquid inlet end of the circulation pump is communicated with the other end of the second control valve. The flow path between the second control valve and the circulation pump is communicated with one end of the third control valve. The other end of the third control valve is communicated with the second end of the first control valve. The step of controlling the flow direction switching component to operate so that the coolant in the coolant circuit flows in the first direction includes:

[0019] Control the first control valve to close, control the second control valve to open, and control the third control valve to open.

[0020] Optionally, the step of controlling the flow direction switching component to operate to allow the coolant in the coolant circuit to flow in the second direction includes:

[0021] Control the first control valve to open, control the second control valve to close, and control the third control valve to close.

[0022] Optionally, after the step of controlling the liquid discharge module to start, the method further includes:

[0023] When the liquid discharge module operates to reach the first condition, control the liquid replenishment module to start and control the liquid discharge module to close.

[0024] Optionally, after the step of controlling the flushing module to drive the secondary coolant to flush the secondary coolant circuit in a first direction, the method further includes:

[0025] When the state parameter of the secondary coolant in the secondary coolant circuit does not reach the target range corresponding to the target cleanliness, output a prompt message, or control the cleaning agent module to inject a cleaning agent into the secondary coolant circuit.

[0026] Optionally, the cleaning conditions include at least one of the following:

[0027] The pH value of the secondary coolant in the secondary coolant circuit is outside the first preset numerical range;

[0028] The solid concentration in the secondary coolant in the secondary coolant circuit is greater than or equal to the second preset concentration;

[0029] The total operating duration of the secondary coolant circulation system is greater than or equal to the second preset duration.

[0030] Optionally, before the step of controlling the drain module to open, the method further includes:

[0031] When the secondary coolant circulation system meets the cleaning conditions, output a cleaning prompt message;

[0032] When receiving cleaning time information, determine the target cleaning moment according to the cleaning time information;

[0033] The step of controlling the drain module to open includes:

[0034] Control the drain module to open at the target cleaning moment.

[0035] Optionally, the first condition includes that the opening duration of the drain module reaches the third preset duration;

[0036] And / or, the second condition includes that the opening duration of the liquid replenishment module reaches the fourth preset duration.

[0037] Optionally, after the step of controlling the flushing module to drive the secondary coolant to flush the secondary coolant circuit in a first direction, the method further includes:

[0038] Return to execute the step of controlling the drain module to open until the cleaning end condition is met.

[0039] In addition, to achieve the above object, the present application further provides an environmental conditioning device, which includes a control device and a refrigerant circulation system connected to the control device. The refrigerant circulation system includes a refrigerant circuit and a cleaning device connected to the refrigerant circuit. The control device includes: a memory, a processor, and a control program for the environmental conditioning device stored on the memory and executable on the processor. When the control program for the environmental conditioning device is executed by the processor, the steps of the control method for the environmental conditioning device described in any one of the above are implemented.

[0040] In addition, to achieve the above object, the present application further provides a storage medium, on which a control program for an environmental conditioning device is stored. When the control program for the environmental conditioning device is executed by a processor, the steps of the control method for the environmental conditioning device described in any one of the above are implemented.

[0041] A control method for an environmental conditioning device provided by the present invention. A cleaning device connected to a refrigerant circuit is provided inside the environmental conditioning device. The cleaning device includes a liquid discharge module, a liquid replenishment module, and a flushing module. When the refrigerant circulation system meets the cleaning conditions, first, the refrigerant in the refrigerant circuit is discharged through the liquid discharge module, then clean refrigerant is replenished to the refrigerant circuit through the liquid replenishment module, and then the refrigerant circuit is reversely cleaned through the flushing module. Thus, it is possible to clean the refrigerant circuit without after-sales personnel, timely improve the cleanliness of the refrigerant circulation system, and ensure the heat exchange effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the system structure of an embodiment of the environmental conditioning device of the present invention;

[0043] Figure 2 It is a schematic diagram of the system structure of another embodiment of the environmental conditioning device of the present invention;

[0044] Figure 3 It is a schematic diagram of the hardware structure involved in the operation of an embodiment of the environmental conditioning device of the present invention;

[0045] Figure 4 It is a schematic flowchart of an embodiment of the control method for the environmental conditioning device of the present invention;

[0046] Figure 5 It is a schematic flowchart of another embodiment of the control method for the environmental conditioning device of the present invention;

[0047] Figure 6 It is a schematic flowchart of still another embodiment of the control method for the environmental conditioning device of the present invention.

[0048] The realization, functional features, and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0049] 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.

[0050] An embodiment of the present invention provides an environmental conditioning device for conditioning the air in an indoor environment.

[0051] In an embodiment of the present invention, referring to Figures 1 to 3 , the environmental conditioning device includes a control device 1 and a secondary refrigerant circulation system 3. The secondary refrigerant circulation system 3 is connected to the control device 1.

[0052] In this embodiment, the secondary refrigerant circulation system 3 is a water circuit system, and the secondary refrigerant circulation system 3 can adjust the indoor temperature by using the indoor terminal device 31. In other embodiments, the secondary refrigerant circulation system 3 can also be a system that uses a secondary refrigerant to transfer energy, such as an ethanol solution, etc.

[0053] In this embodiment, the secondary refrigerant circulation system 3 includes a secondary refrigerant circuit and a cleaning device 32, and the cleaning device 32 includes a liquid discharge module 321, a liquid replenishment module 322, and a flushing module 323.

[0054] In this embodiment, the liquid discharge module 321 includes a liquid discharge pipeline communicating with the secondary refrigerant circuit and a liquid discharge valve provided on the liquid discharge pipeline. When the liquid discharge valve is opened, the secondary refrigerant in the secondary refrigerant circuit can be discharged. When the liquid discharge valve is closed, the discharge of the secondary refrigerant in the secondary refrigerant circuit stops.

[0055] In this embodiment, the liquid replenishment module 322 includes a liquid replenishment pipeline communicating with the secondary refrigerant circuit and a liquid replenishment valve provided on the liquid replenishment pipeline. When the liquid replenishment valve is opened, the secondary refrigerant can be replenished into the secondary refrigerant circuit. When the liquid discharge valve is closed, the secondary refrigerant stops entering the secondary refrigerant circuit.

[0056] In this embodiment, the flushing module 323 includes a circulation pump 01 provided in the secondary refrigerant circuit and a flow direction switching component, and both ends of the circulation pump 01 are connected to the flow direction switching component. The circulation pump 01 is used to drive the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction ( Figure 1 the solid line direction in Figure 1 ), and the flow direction switching component is used to adjust the secondary refrigerant in the secondary refrigerant circuit to flow in the first direction ( Figure 1 the dotted line direction in

[0057] when the circulation pump 01 is turned on. The second direction is opposite to the first direction. Among them, the second direction is the circulation direction of the secondary refrigerant in the secondary refrigerant circuit during the process of the environmental conditioning device conditioning the indoor environment.The flow direction switching component has a first operating state and a second operating state. When the circulation pump 01 is turned on, the flow direction switching component operates in the first operating state, and the coolant in the coolant circuit flows in the second direction. When the circulation pump 01 is turned on, the flow direction switching component operates in the second operating state, and the coolant in the coolant circuit flows in the first direction.

[0058] In this embodiment, the flow direction switching component includes a first control valve 02, a second control valve 03, and a third control valve 04. The first end of the first control valve 02 is communicated with the liquid outlet end of the circulation pump 01. The pipeline between the first control valve 02 and the circulation pump 01 is communicated with the first end of the second control valve 03. The liquid inlet end of the circulation pump 01 is communicated with the second end of the second control valve 03. The flow path between the second control valve 03 and the circulation pump 01 is communicated with the first end of the third control valve 04. The second end of the third control valve 04 is communicated with the second end of the first control valve 02.

[0059] In this embodiment, the first control valve 02, the second control valve 03, and the third control valve 04 are all electric two-way valves. In other embodiments, at least one of the first control valve 02, the second control valve 03, and the third control valve 04 can also be a solenoid valve.

[0060] The first operating state includes the first control valve 02 being opened, the second control valve 03 being closed, and the third control valve 04 being closed. When the circulation pump 01 is turned on, the coolant flowing out of the liquid outlet end flows through the first control valve 02 and enters the coolant circuit. After flowing through the indoor terminal device 31 and the energy supply module in the coolant circuit, it can flow back to the liquid inlet end of the circulation pump 01.

[0061] The second operating state includes the first control valve 02 being closed, the second control valve 03 being opened, and the third control valve 04 being opened. When the circulation pump 01 is turned on, the coolant flowing out of the liquid outlet end flows through the second control valve 03 and enters the coolant circuit under the blocking action of the first control valve 02. After flowing through the energy supply module and the indoor terminal device 31 in the coolant circuit, it can flow through the third control valve 04 and flow back to the liquid inlet end of the circulation pump 01.

[0062] Furthermore, the flow direction switching component may further include a check valve 05. The check valve 05 is provided between the second end of the second control valve 03 and the first end of the third control valve 04. The check valve 05 is set to conduct unidirectionally from the second end of the second control valve 03 to the first end of the third control valve 04.

[0063] Based on this, it is beneficial to avoid the coolant flowing through the third control valve 04 when flowing in the first direction from being difficult to flow back to the circulation pump 01, thereby effectively improving the smoothness of the coolant circulation.

[0064] In other embodiments, a circulation pump 01 may also be provided in the flushing module 323 and the flow direction switching component may not be provided. In other embodiments, the first control valve 02, the second control valve 03, and the third control valve 04 are also cancelled in the flow direction switching component, and multi-way valves are respectively provided at the confluence points at both ends of the branches where the second control valve 03 and the third control valve 04 are located.

[0065] Further, in this embodiment, the secondary refrigerant circuit includes indoor terminal equipment 31 and an energy supply module.

[0066] The number of the indoor terminal equipment 31 may be one or more than one. Different indoor terminal equipment 31 may be distributed in different indoor spaces. Alternatively, different indoor terminal equipment 31 may be provided in different areas of the same indoor space.

[0067] In this embodiment, the indoor terminal equipment 31 includes a radiant terminal equipment (such as a radiant panel, a capillary tube network, etc.) or a convective heat exchange equipment (such as a fan coil unit, etc.). The radiant terminal equipment may be installed on the wall surface of the indoor space (including the wall surface and / or the ground surface, etc.).

[0068] The energy supply module is used to provide cold or heat for the flowing secondary refrigerant. The energy supply module may be a module for storing energy, such as a thermal energy storage water tank, etc. The energy supply module may also be a heat exchange module heat exchange-connected with other systems having energy. The energy supply module may also be a module that can generate heat by itself, such as an electric heating module, etc.

[0069] In the secondary refrigerant circuit, the liquid inlet of the indoor terminal equipment 31 is communicated with the liquid outlet of the energy supply module, and the liquid outlets of the indoor terminal equipment 31 are communicated with the liquid inlet of the energy supply module. The secondary refrigerant can circulate between the indoor terminal equipment 31 and the energy supply module, and can absorb the cold or heat of the energy supply module when flowing through the energy supply module and release it to the indoor space where the indoor terminal equipment 31 is located.

[0070] Further, in this embodiment, the environmental conditioning equipment further includes a heat pump system, and the energy supply module is heat exchange-connected with the heat pump system.

[0071] In this embodiment, the heat pump system 2 is an air source heat pump system. 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, etc.

[0072] In this embodiment, the heat pump system 2 includes a refrigerant circulation circuit, and the refrigerant circulation circuit includes a compressor, a first heat exchanger, a throttling device and a second heat exchanger. The second heat exchanger is heat exchange-connected with the energy supply module in the secondary refrigerant circulation system 3. The second heat exchanger and the energy supply module may be a shell-and-tube heat exchanger or a plate heat exchanger.

[0073] The heat pump system 2 can have two operating modes: a refrigeration mode and a heating mode. When the heat pump system 2 operates in the refrigeration mode, the second heat exchanger is in an evaporation state to absorb heat, and when the heat pump system 2 operates in the heating mode, the second heat exchanger is in a condensation state to release heat.

[0074] During the operation of the heat pump system 2, the coolant in the energy supply module can absorb the cold or heat released by the second heat exchanger. The coolant carrying cold or heat flowing out of the energy supply module can flow in the coolant circuit to the indoor terminal device 31 to release the cold or heat into the air in the indoor space, so as to adjust the environmental temperature of the indoor space. The coolant after releasing cold or heat can re-enter the energy supply module to exchange heat with the second heat exchanger, and the coolant after heat exchange can re-enter the coolant circuit for heat exchange, and so on in a cycle, thereby realizing the adjustment of the indoor space temperature by the environmental control device.

[0075] When the heat pump system 2 operates in refrigeration, the second heat exchanger is in an evaporation state. The coolant in the energy supply module absorbs the cold output by the second heat exchanger and then its temperature decreases to form a coolant carrying cold. The coolant carrying cold enters the medium circulation circuit and flows to the indoor terminal device 31, releasing cold into the indoor space, and the environmental temperature of the indoor space decreases.

[0076] When the heat pump system 2 operates in heating, the second heat exchanger is in a condensation state. The coolant in the energy supply module absorbs the heat output by the second heat exchanger and then its temperature increases to form a coolant carrying heat. The coolant carrying heat enters the coolant circuit and flows to the indoor terminal device 31, releasing heat into the indoor space, and the environmental temperature of the indoor space increases.

[0077] Further, in this embodiment, referring to Figures 1 to 3 , the control device 1 can also be connected to the coolant quality monitoring module 5. The coolant quality monitoring module 5 can be arranged in the coolant circuit and is used to detect the quality parameters of the coolant, such as the pH value and / or the solid concentration, etc.

[0078] Further, in this embodiment, referring to Figure 2 and Figure 3 , the environmental control device can also include a cleaning agent device 6 arranged in the coolant circuit. The cleaning agent device 6 can be used to put cleaning agent into the coolant circuit. The cleaning agent device 6 can be connected to the control device 1, and the control device 1 can control the operation of the cleaning agent device 6.

[0079] In the embodiment of the present invention, referring to Figure 3, the control device 1 of the environmental conditioning device includes: a processor 1001 (such as a CPU), a memory 1002, a timer 1003, etc. Each component in the control device 1 is connected through 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. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0080] Those skilled in the art can understand that Figure 3 the device structure shown in

[0081] does not constitute a limitation on the device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 3 As shown in Figure 3 , the memory 1002, as a storage medium, may include a control program for the environmental conditioning device. In the

[0082] embodiment of the present invention, a control method for an environmental conditioning device is further provided, which is applied to the above environmental conditioning device.

[0083] In this embodiment, the environmental conditioning device includes a secondary refrigerant circulation system, the secondary refrigerant circulation system includes a secondary refrigerant circuit and a cleaning device connected to the secondary refrigerant circuit, and the cleaning device includes a drainage module, a liquid replenishment module, and a flushing module. Referring to Figure 4 , an embodiment of the control method for the environmental conditioning device of the present application is proposed. In this embodiment, the control method for the environmental conditioning device includes:

[0084] Step S10, when the secondary refrigerant circulation system meets the cleaning condition, control the drainage module to open;

[0085] The cleaning condition may include target conditions such as the state parameters of the secondary refrigerant in the secondary refrigerant circuit, and / or the operating parameters of the secondary refrigerant circulation system, and / or the instruction state received by the environmental conditioning device when the secondary refrigerant circuit in the secondary refrigerant circulation system needs to be cleaned.

[0086] Specifically, the drainage module can be controlled to open at the target cleaning moment. The target cleaning moment can be the current moment when the system meets the cleaning condition, or the moment specified by the user according to actual needs, or the moment with a preset time interval from the moment when the system meets the cleaning condition.

[0087] When the drainage module is opened, the secondary refrigerant in the secondary refrigerant circuit is discharged outside the secondary refrigerant circuit.

[0088] When the liquid discharge module is turned on, it can operate with fixed operating parameters or operate with operating parameters determined according to the actual state of the secondary refrigerant circulation system.

[0089] S10 is executed during the operation of the secondary refrigerant circulation system or in the shutdown or standby state. When the secondary refrigerant circulation system meets the cleaning conditions, the heat pump system can be shut down or operate in heating mode.

[0090] Step S20: When the liquid discharge module operates to reach the first condition, control the liquid replenishment module to be turned on; the first condition means that all the secondary refrigerant in the secondary refrigerant circuit is discharged outside the secondary refrigerant circuit. The first condition may include conditions that need to be met by the liquid discharge module itself and / or the current state parameters of the secondary refrigerant in the secondary refrigerant circuit.

[0091] In this embodiment, the first condition includes that the opening duration of the liquid discharge module reaches a third preset duration. In other embodiments, the first condition may also include that the flow rate at the liquid discharge port of the secondary refrigerant circuit is less than a preset flow rate.

[0092] When the liquid replenishment module is turned on, the secondary refrigerant can be injected into the secondary refrigerant circuit.

[0093] When the liquid replenishment module is turned on, it can operate with fixed operating parameters or operate with operating parameters determined according to the actual state of the secondary refrigerant circulation system. For example, the operating parameters of the liquid replenishment module can be determined according to the current operating parameters of the liquid discharge module.

[0094] In this embodiment, when the liquid discharge module operates to reach the first condition, controlling the liquid replenishment module to be turned on and controlling the liquid discharge module to be turned off can effectively improve the liquid replenishment efficiency of the secondary refrigerant circuit, thereby improving the cleaning efficiency of the secondary refrigerant circuit.

[0095] Step S30: When the liquid replenishment module operates to reach the second condition, control the flushing module to drive the secondary refrigerant to flush the secondary refrigerant circuit in the first direction; wherein, the first direction is opposite to the second direction in which the secondary refrigerant flows when the secondary refrigerant circulation system operates (in refrigeration operation or heating operation).

[0096] The second condition means that the amount of secondary refrigerant filled in the secondary refrigerant circuit reaches the target total amount. The second condition may include conditions that need to be met by the liquid replenishment module itself and / or the current state parameters of the secondary refrigerant in the secondary refrigerant circuit.

[0097] In this embodiment, the second condition includes that the opening duration of the liquid replenishment module reaches a fourth preset duration. In other embodiments, the second condition may also include that the change amount of the secondary refrigerant in the secondary refrigerant circuit per unit time is less than a preset amount.

[0098] During the operation of the flushing module (i.e., controlling the flushing module to drive the secondary coolant to flush the secondary coolant circuit in the first direction), the operation parameters (such as operation power and / or flushing duration, etc.) can be preset fixed parameters, or can be parameters determined according to the actual situation of the secondary coolant circulation system. For example, the operation parameters of the flushing module can be determined according to the cleanliness parameter of the secondary coolant in the secondary coolant circuit when meeting the preset conditions and / or the total operation duration of the secondary coolant circulation system before meeting the preset conditions, etc.

[0099] A control method for an environmental conditioning device proposed by an embodiment of the present invention. When the secondary coolant circulation system meets the cleaning conditions, first, the secondary coolant in the secondary coolant circuit is discharged through the liquid discharge module, then clean secondary coolant is replenished to the secondary coolant circuit through the liquid replenishment module, and then the secondary coolant circuit is reversely cleaned through the flushing module. Thus, without after-sales personnel, the secondary coolant circuit can be cleaned, the cleanliness of the secondary coolant circulation system can be improved in a timely manner, and the heat exchange effect of the device can be ensured.

[0100] Further, after step S30, return to execute the step of controlling the liquid discharge module to open until the cleaning end condition is met. Based on this, through multiple liquid discharges, liquid replenishments, and reverse flushes, the cleaning effect of the secondary coolant circuit can be effectively improved.

[0101] Further, in this embodiment, the cleaning conditions include at least one of the following:

[0102] Condition 1, the pH value of the secondary coolant in the secondary coolant circuit is outside the first preset numerical range;

[0103] Condition 2, the solid concentration in the secondary coolant in the secondary coolant circuit is greater than or equal to the second preset concentration;

[0104] Condition 3, the total operation duration of the secondary coolant circulation system is greater than or equal to the second preset duration.

[0105] Regarding Condition 1, the upper limit value and the lower limit value of the first preset numerical range are the first preset value and the second preset value respectively. When the pH value of the secondary coolant is less than the second preset value or the secondary coolant is greater than the first preset value, it can be considered that the secondary coolant is outside the first preset numerical range, where the first preset value is greater than the second preset value.

[0106] Regarding Condition 2, the second preset concentration can be a preset fixed value, or can be a value determined according to the type of indoor terminal equipment in the secondary coolant circulation system.

[0107] Regarding Condition 3, the total operating duration specifically includes the total duration during which the secondary refrigerant circulation system has been in an open state from the end time of the previous cleaning to the current time, or the total duration during which the secondary refrigerant circulation system has been in an open state from the first startup time to the current time. The second preset duration can be a preset fixed duration or a duration determined according to the actual operating conditions of the equipment.

[0108] In this embodiment, through the above method, it is possible to accurately identify whether the secondary refrigerant circulation system needs cleaning, thereby further improving the timeliness of cleaning the secondary refrigerant circulation system.

[0109] Furthermore, based on the above embodiment, another embodiment of the control method for the environmental conditioning equipment of the present application is proposed. In this embodiment, the flushing module further includes a circulation pump and a flow direction switching component provided in the secondary refrigerant circuit. The circulation pump is used to drive the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction and / or the first direction. Refer to Figure 5 , the step of controlling the flushing module to drive the secondary refrigerant to flush the secondary refrigerant circuit in the first direction when the liquid replenishment module operates to reach the second condition includes:

[0110] Step S31, when the liquid replenishment module operates to reach the second condition, control the circulation pump to start, and control the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction.

[0111] The operating parameters (such as operating power and / or operating speed and / or operating current, etc.) when the circulation pump starts can be preset fixed parameters (such as maximum speed or maximum power, etc.), or can also be parameters determined according to the actual situation of the secondary refrigerant circulation system. For example, the target operating parameters of the circulation pump can be determined according to the opening duration of the liquid supply module, and the circulation pump is controlled to operate with the target operating parameters, so as to save energy while ensuring the cleaning effect.

[0112] In this embodiment, the flow direction switching component includes a first control valve, a second control valve, and a third control valve. The first end of the first control valve is communicated with the liquid outlet end of the circulation pump. The pipeline between the first control valve and the circulation pump is communicated with one end of the second control valve. The liquid inlet end of the circulation pump is communicated with the other end of the second control valve. The flow path between the second control valve and the circulation pump is communicated with one end of the third control valve. The other end of the third control valve is communicated with the second end of the first control valve. Then the step of controlling the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction includes: controlling the first control valve to close, controlling the second control valve to open, and controlling the third control valve to open.

[0113] In this embodiment, in the above manner, the circulation pump can be used to drive the refrigerant to circulate between the indoor terminal device and the energy supply module in the second flow direction when the secondary refrigerant circulation system is operating. During the cleaning process, the flow direction of the secondary refrigerant is switched to the first flow direction through the flow direction switching component, so as to realize the reverse flushing of the secondary refrigerant pipeline, facilitate the shedding of dirt adhering to the inner wall of the secondary refrigerant circuit, and further improve the cleaning effect of the secondary refrigerant circulation system.

[0114] In other embodiments, it is also possible to control the cooperation of the above-mentioned first multi-way valve and the second multi-way valve to switch the flow direction of the secondary refrigerant from the second direction to the first direction when the circulation pump is turned on. In other embodiments, the flushing module may include a circulation pump. The step of controlling the flushing module to drive the secondary refrigerant to flush the secondary refrigerant circuit in the first direction includes controlling the circulation pump to operate in the first rotation direction. It is defined that the rotation direction of the circulation pump when the secondary refrigerant circulation system is operating is the second rotation direction, and the first commutation is opposite to the second rotation direction.

[0115] Further, in this embodiment, after the steps of controlling the circulation pump to start and controlling the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction, the following steps are further included: when the cleaning device runs to meet the cleaning end condition, controlling the flow direction switching component to operate to allow the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction.

[0116] When the cleaning device runs to meet the cleaning end condition, the circulation pump can be turned off or controlled according to the actual heat exchange requirements.

[0117] When the cleaning device runs to meet the cleaning end condition, both the liquid replenishing module and the liquid discharging module are turned off.

[0118] In this embodiment, the cleaning end condition includes at least one of the following conditions:

[0119] Condition 3, the pH value of the secondary refrigerant in the secondary refrigerant circuit is within the second preset numerical range;

[0120] Condition 4, the solid concentration in the secondary refrigerant in the secondary refrigerant circuit is less than or equal to the first preset concentration;

[0121] Condition 5, the total cleaning duration of the secondary refrigerant circuit is greater than or equal to the first preset duration.

[0122] Regarding Condition 3, the lower limit value of the second preset numerical range here is greater than the lower limit value of the above-mentioned first preset numerical range, and the upper limit value of the second preset numerical range is less than the upper limit value of the above-mentioned first preset numerical range. The pH value within the second preset numerical range indicates that the cleanliness of the secondary refrigerant circuit meets the target cleanliness requirement.

[0123] Regarding condition 4, in this embodiment, the solid concentration is the soluble fixed concentration of the coolant in the coolant circuit. The first preset concentration is less than the above-mentioned second preset concentration. The solid concentration being less than or equal to the first preset concentration indicates that the cleanliness of the coolant circuit meets the target cleanliness requirement.

[0124] Regarding condition 5, when the coolant circulation system meets the cleaning condition, at the target moment, control the drain module to open, then the total duration between the target moment and the current moment can be regarded as the total cleaning duration here. The first preset duration can be a preset fixed duration, can also be determined according to the user-set parameters, or can also be determined according to the heat exchange energy efficiency value monitored during the operation of the coolant circulation system, and so on.

[0125] In this embodiment, through the above method, when the cleanliness of the coolant circuit reaches the target requirement or the cleaning duration is long enough, stop the reverse flushing of the coolant circuit, so that the circulation direction of the coolant can be switched back to the second direction required for the normal heat exchange operation of the coolant circulation system, thereby effectively balancing the improvement of cleanliness and the saving of system energy consumption, and being beneficial to quickly meeting the heat exchange needs of indoor users.

[0126] In other embodiments, the cleaning end condition may also include receiving a cleaning end instruction input by the user.

[0127] Further, in this embodiment, the flow direction switching component includes a first control valve, a second control valve, and a third control valve. The first end of the first control valve is communicated with the liquid outlet end of the circulation pump. The pipeline between the first control valve and the circulation pump is communicated with one end of the second control valve. The liquid inlet end of the circulation pump is communicated with the other end of the second control valve. The flow path between the second control valve and the circulation pump is communicated with one end of the third control valve. The other end of the third control valve is communicated with the second end of the first control valve. The step of controlling the flow direction switching component to operate to allow the coolant in the coolant circuit to flow in the second direction includes: controlling the first control valve to open, controlling the second control valve to close, and controlling the third control valve to close.

[0128] Based on this, through the cooperation of the first control valve, the second control valve, and the third control valve to switch the circulation direction of the coolant, the circulation pump can be used both for cleaning and for driving the coolant circulation required for normal heat exchange operation, thereby reducing system components while meeting the system heat exchange requirements and cleaning requirements.

[0129] Further, based on any of the above embodiments, another embodiment of the control method of the environmental control device of the present application is proposed. In this embodiment, after the step of controlling the flushing module to drive the coolant to flush the coolant circuit in the first direction, it further includes:

[0130] When the state parameters of the secondary refrigerant in the secondary refrigerant circuit do not reach the target range corresponding to the target cleanliness, output a prompt message, or control the cleaning agent module to inject a cleaning agent into the secondary refrigerant circuit.

[0131] The prompt message can be output in at least one of the ways of display, lighting, sound, vibration, etc.

[0132] The prompt message is used to prompt the user to manually clean the secondary refrigerant circulation circuit.

[0133] The cleaning agent can improve the cleanliness of the secondary refrigerant in the secondary refrigerant circulation circuit by physical or chemical means.

[0134] The state parameters may include the pH value of the secondary refrigerant and / or the solid concentration in the secondary refrigerant as described above. When the pH value is less than the lower limit of the above second preset numerical range or greater than the upper limit of the above second preset numerical range, it can be considered that the target cleanliness is not reached, and / or when the solid concentration is greater than the above first preset concentration, it can be considered that the target cleanliness is not reached.

[0135] For example, when the pH value of the secondary refrigerant in the secondary refrigerant circuit is less than the lower limit of the above second preset numerical range, an alkaline cleaning agent can be put in; when the pH value of the secondary refrigerant in the secondary refrigerant circuit is less than the upper limit of the above second preset numerical range, an acidic cleaning agent can be put in; when the solid concentration is greater than the above first preset concentration, alum can be put in, and so on.

[0136] In this embodiment, through the above method, when the secondary refrigerant does not meet the target cleanliness requirements after cleaning, it can be cleaned in time by manual or injecting a cleaning agent, so as to ensure that the cleanliness of the secondary refrigerant circulation system is further improved to ensure the heat exchange effect of the system.

[0137] Further, based on any of the above embodiments, another embodiment of the control method of the environmental control device of the present application is proposed. In this embodiment, referring to Figure 6 , before the step of controlling the drain module to open, it further includes:

[0138] Step S101, when the secondary refrigerant circulation system meets the cleaning conditions, output a cleaning prompt message;

[0139] The cleaning prompt message can be output in at least one of the ways of display, lighting, sound, vibration, etc.

[0140] In this embodiment, the cleaning prompt message is output on the user interaction interface of the environmental control device.

[0141] Step S102, when receiving the cleaning time information, determine the target cleaning moment according to the cleaning time information;

[0142] After the user receives the cleaning prompt information, the user can select the cleaning time according to actual needs and input the corresponding setting instruction. When the setting instruction from the user is received, the cleaning time information therein can be extracted. The cleaning time information may include the time for immediate cleaning or scheduled cleaning.

[0143] The step of controlling the liquid discharge module to open includes:

[0144] Step S103, controlling the liquid discharge module to open at the target cleaning moment.

[0145] In this embodiment, by the above method, it is beneficial to ensure that the cleaning of the secondary refrigerant circulation system can accurately meet the user's needs.

[0146] In addition, an embodiment of the present invention further provides a storage medium, on which a control program for an environmental control device is stored. When the control program for the environmental control device is executed by a processor, the relevant steps of any one of the above embodiments of the control method for the environmental control device are implemented.

[0147] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including the element.

[0148] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0149] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented 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, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device (which may be a mobile phone, computer, server, environmental control device, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0150] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A control method for an environmental regulation device, characterized in that, The environmental conditioning device includes a secondary refrigerant circulation system. The secondary refrigerant circulation system includes a secondary refrigerant circuit and a cleaning device connected to the secondary refrigerant circuit. The cleaning device includes a drainage module, a liquid replenishment module, and a flushing module. The control method of the environmental conditioning device includes the following steps: When the secondary refrigerant circulation system meets the cleaning conditions, control the drainage module to open; When the drainage module operates to reach the first condition, control the liquid replenishment module to open; When the liquid replenishment module operates to reach the second condition, control the flushing module to drive the secondary refrigerant to flush the secondary refrigerant circuit in the first direction; Wherein, the first direction is opposite to the second direction in which the secondary refrigerant flows when the secondary refrigerant circulation system operates.

2. The control method of the environmental conditioning device according to claim 1, wherein The flushing module further includes a circulation pump and a flow direction switching component provided in the secondary refrigerant circuit. The circulation pump is used to drive the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction. The step of controlling the flushing module to drive the secondary refrigerant to flush the secondary refrigerant circuit in the first direction when the liquid replenishment module operates to reach the second condition includes: When the liquid replenishment module operates to reach the second condition, control the circulation pump to open, and control the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction.

3. The control method of the environmental conditioning device according to claim 2, wherein After the step of controlling the circulation pump to open and controlling the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction, it further includes: When the cleaning device operates to meet the cleaning end conditions, control the flow direction switching component to operate to allow the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction.

4. The control method of the environmental conditioning device according to claim 3, wherein, The cleaning end conditions include at least one of the following conditions: The pH value of the secondary refrigerant in the secondary refrigerant circuit is within a second preset numerical range; The solid concentration in the secondary refrigerant in the secondary refrigerant circuit is less than or equal to a first preset concentration; The total cleaning duration of the secondary refrigerant circuit is greater than or equal to a first preset duration.

5. The control method of the environmental conditioning device according to claim 3, wherein, The flow direction switching component includes a first control valve, a second control valve, and a third control valve. The first end of the first control valve is communicated with the liquid outlet end of the circulation pump. The pipeline between the first control valve and the circulation pump is communicated with one end of the second control valve. The liquid inlet end of the circulation pump is communicated with the other end of the second control valve. The flow path between the second control valve and the circulation pump is communicated with one end of the third control valve. The other end of the third control valve is communicated with the second end of the first control valve. The step of controlling the flow direction switching component to operate so that the secondary refrigerant in the secondary refrigerant circuit flows in the first direction includes: Control the first control valve to close, control the second control valve to open, and control the third control valve to open.

6. The control method of the environmental conditioning device according to claim 5, characterized in that, The step of controlling the flow direction switching component to operate to allow the secondary refrigerant in the secondary refrigerant circuit to flow in the second direction includes: Control the first control valve to open, control the second control valve to close, and control the third control valve to close.

7. The control method of the environmental conditioning device according to claim 1, characterized in that, After the step of controlling the drainage module to open, it further includes: When the liquid discharge module operates to reach the first condition, control the liquid replenishment module to start and control the liquid discharge module to stop.

8. The control method of the environmental conditioning device according to claim 1, characterized in that, After the step of controlling the flushing module to drive the coolant to flush the coolant circuit in the first direction, it further includes: When the state parameters of the coolant in the coolant circuit do not reach the target range corresponding to the target cleanliness, output a prompt message, or control the cleaning agent module to inject a cleaning agent into the coolant circuit.

9. The control method of the environmental conditioning device according to any one of claims 1 to 8, characterized in that, The cleaning conditions include at least one of the following: The pH value of the coolant in the coolant circuit is outside the first preset numerical range; The solid concentration in the coolant in the coolant circuit is greater than or equal to the second preset concentration; The total operating duration of the coolant circulation system is greater than or equal to the second preset duration.

10. The control method of the environmental conditioning device according to any one of claims 1 to 8, characterized in that, Before the step of controlling the liquid discharge module to start, it further includes: When the coolant circulation system meets the cleaning conditions, output a cleaning prompt message; When receiving the cleaning time information, determine the target cleaning moment according to the cleaning time information; The step of controlling the liquid discharge module to start includes: Control the liquid discharge module to start at the target cleaning moment.

11. The control method of the environmental conditioning device according to any one of claims 1 to 8, characterized in that, The first condition includes that the opening duration of the liquid discharge module reaches the third preset duration; And / or, the second condition includes that the opening duration of the liquid replenishment module reaches the fourth preset duration.

12. The control method of the environmental conditioning device according to any one of claims 1 to 8, characterized in that, After the step of controlling the flushing module to drive the coolant to flush the coolant circuit in the first direction, it further includes: Return to execute the step of controlling the liquid discharge module to start until the cleaning end condition is met.

13. An environmental regulation device, characterized in that, The environmental conditioning device includes a control device and a coolant circulation system connected to the control device. The coolant circulation system includes a coolant circuit and a cleaning device connected to the coolant circuit. The control device includes: a memory, a processor, and a control program of the environmental conditioning device stored on the memory and executable on the processor. When the control program of the environmental conditioning device is executed by the processor, it realizes the steps of the control method of the environmental conditioning device according to any one of claims 1 to 12.

14. A storage medium, characterized in that, A control program of an environmental conditioning device is stored on the storage medium. When the control program of the environmental conditioning device is executed by a processor, it realizes the steps of the control method of the environmental conditioning device according to any one of claims 1 to 12.

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