Variable shunting control method and device based on supercooling degree and air conditioner

Abstract

The invention provides a variable flow dividing control method and device based on the supercooling degree and an air conditioner, and is applied to the field of air conditioner control. The method comprises the steps that firstly, under the condition that the air conditioner is in a refrigeration mode and is in a stable operation state, whether the current environment temperature meets the user requirement or not is judged; then, under the condition that the current environment temperature cannot meet the user requirement, the current supercooling degree is calculated, and the first control strategy and the second control strategy are executed in sequence based on the current supercooling degree till the preset condition is met; wherein the first control strategy is to adjust the rotating speed of a fan of the indoor unit; the second control strategy is to adjust the shunting mode of the shunt; the flow dividing mode of the flow divider comprises single-path flow dividing and double-path flow dividing. According to the variable shunting control method and device based on the supercooling degree and the air conditioner, when the heat exchange capacity is reduced, the heat exchange capacity is improved by changing the shunting mode, and the conditions that power consumption is increased and the refrigeration effect is poor during self-cleaning of the air conditioner are avoided.

Description

Technical Field

[0001] The present application relates to the field of air conditioner control, and in particular to a variable split flow control method and device based on supercooling, and an air conditioner. Background Art

[0002] As people's living standards continue to improve and the level of intelligence of home appliances continues to increase, smart home appliances are becoming more and more popular. Users can use air conditioners for heating in winter to increase the indoor temperature, and can also use air conditioners for cooling in summer to reduce the indoor temperature.

[0003] In the related art, in order to improve the heat exchange efficiency of the air conditioner, many air conditioners have a self-cleaning function, which uses condensed water or microcurrent to self-clean the heat exchanger.

[0004] However, long-term self-cleaning will affect the heat exchange capacity of the heat exchanger to a certain extent, which will not only increase power consumption, but also affect the cooling effect of the air conditioner to a certain extent. Summary of the invention

[0005] The purpose of the present application is to provide a variable diversion control method, device and air conditioner based on supercooling, which is used to increase the heat exchange capacity by changing the diversion method when the heat exchange capacity is reduced, so as to avoid increased power consumption and poor cooling effect during self-cleaning of the air conditioner.

[0006] The present application provides a variable flow splitting control method based on subcooling, comprising: When the air conditioner is in cooling mode and in a stable operating state, determine whether the current ambient temperature meets the user's needs; when the current ambient temperature cannot meet the user's needs, calculate the current supercooling degree, and execute the first control strategy and the second control strategy in sequence based on the current supercooling degree until the preset conditions are met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion modes of the diverter include: single-way diversion and double-way diversion; the preset conditions include: increased supercooling degree; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

[0007] Optionally, determining whether the current ambient temperature meets user needs includes: obtaining the current indoor ambient temperature and the set temperature of the air conditioner, and calculating the temperature difference between the current ambient temperature and the set temperature; if the temperature difference is greater than a preset difference, it is determined that the current ambient temperature cannot meet user needs; otherwise, the current ambient temperature can meet user needs.

[0008] Optionally, the calculation of the current degree of subcooling includes: obtaining the outlet pressure of the condenser and the liquid temperature at the outlet of the condenser, and determining the saturation temperature by looking up a table based on the outlet pressure; and calculating the difference between the saturation temperature and the liquid temperature to obtain the current degree of subcooling.

[0009] Optionally, the first control strategy and the second control strategy are executed in sequence based on the current supercooling degree until a preset condition is met, including: when the current supercooling degree is less than a preset supercooling degree threshold, the first control strategy is executed, and whether the preset condition is met after a first preset time period is determined; if the preset condition is met, the first control strategy is stopped from being executed when the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0010] Optionally, the first control strategy and the second control strategy are executed in sequence based on the current supercooling degree until a preset condition is met, including: if the preset condition is not met, the second control strategy is executed, and whether the preset condition is met after a second preset time period is determined; if the preset condition is met, the second control strategy is stopped from being executed if the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0011] Optionally, after determining whether the current ambient temperature meets user requirements, the method further comprises: when the current supercooling degree is greater than or equal to the preset supercooling degree threshold, maintaining the current operating state of the air conditioner unchanged.

[0012] The present application also provides a variable flow split control device based on subcooling, comprising: A judgment module is used to judge whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; a calculation module is used to calculate the current supercooling degree when the current ambient temperature cannot meet the user's needs; a control module is used to execute the first control strategy and the second control strategy in sequence based on the current supercooling degree until the preset conditions are met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion modes of the diverter include: single-way diversion and double-way diversion; the preset conditions include: increased supercooling degree; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

[0013] Optionally, the device also includes: an acquisition module; the acquisition module is used to obtain the current indoor ambient temperature and the set temperature of the air conditioner; the calculation module is also used to calculate the temperature difference between the current ambient temperature and the set temperature; the judgment module is specifically used to determine that the current ambient temperature cannot meet user needs if the temperature difference is greater than a preset difference, otherwise, the current ambient temperature can meet user needs.

[0014] Optionally, the acquisition module is also used to obtain the outlet pressure of the condenser and the liquid temperature at the outlet of the condenser; the calculation module is specifically used to determine the saturation temperature by looking up a table based on the outlet pressure; the calculation module is specifically used to calculate the difference between the saturation temperature and the liquid temperature to obtain the current degree of subcooling.

[0015] Optionally, the control module is specifically used to execute the first control strategy when the current supercooling degree is less than a preset supercooling degree threshold, and determine whether the preset condition is met after a first preset time period; the control module is also specifically used to stop executing the first control strategy if the preset condition is met and the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0016] Optionally, the control module is specifically used to execute the second control strategy if the preset condition is not met, and determine whether the preset condition is met after a second preset time period; the control module is also specifically used to stop executing the second control strategy if the preset condition is met and the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0017] Optionally, the control module is further configured to keep the current operating state of the air conditioner unchanged when the current supercooling degree is greater than or equal to the preset supercooling degree threshold.

[0018] The present application also provides a computer program product, comprising a computer program / instruction, which, when executed by a processor, implements the steps of any of the above-mentioned variable split flow control methods based on subcooling.

[0019] The present application also provides an electronic device, which may be an air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the variable shunt control methods based on subcooling as described above are implemented.

[0020] The present application also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-mentioned variable split flow control methods based on subcooling are implemented.

[0021] The variable shunt control method, device and air conditioner based on supercooling provided by the present application firstly judge whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; then, when the current ambient temperature cannot meet the user's needs, calculate the current supercooling, and execute the first control strategy and the second control strategy in sequence based on the current supercooling until the preset conditions are met; wherein, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset conditions include: supercooling increases; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode, so as to avoid the situation of increased power consumption and poor cooling effect when the air conditioner is self-cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the operating principle of the air conditioner provided by this application; Figure 2 It is a flow chart of a variable split flow control method based on subcooling provided in the present application; Figure 3 It is a structural schematic diagram of the throttling unit and the diverter provided by the present application; Figure 4 It is a structural schematic diagram of an outdoor heat exchanger provided by the present application; Figure 5 It is a structural schematic diagram of a variable flow split control device based on subcooling provided by the present application; Figure 6 It is a structural schematic diagram of the electronic device provided by this application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] The operating principle of the air conditioner involved in the embodiment of the present application is described in detail below: like Figure 1 As shown in the figure, the compressor compresses the refrigerant (coolant) and transports it to the condenser through a pipeline. The high-temperature and high-pressure gaseous refrigerant releases heat in the condenser and becomes a medium-temperature and high-pressure liquid refrigerant. After that, the medium-temperature and high-pressure liquid refrigerant is depressurized by a capillary tube (throttling unit) and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant is transported to the evaporator to evaporate from liquid to gas, and absorbs a large amount of heat during the evaporation process. Finally, the low-temperature and low-pressure gaseous refrigerant in the evaporator is transported to the compressor to participate in the next cycle. When the air conditioner is cooling, the heat exchanger of the outdoor unit is the condenser, and the heat exchanger of the indoor unit is the evaporator; conversely, when the air conditioner is heating, the heat exchanger of the outdoor unit is the evaporator, and the heat exchanger of the indoor unit is the condenser.

[0027] In the related art, the long-term operation of the self-cleaning function of the air conditioner will cause the heat exchange capacity of the indoor heat exchanger to deteriorate. In response to the above-mentioned technical problems existing in the related art, the embodiment of the present application provides a variable diversion control method based on supercooling. This method can increase the heat exchange capacity of the outdoor heat exchanger by changing the diversion mode when the heat exchange capacity is reduced, thereby avoiding increased power consumption and poor cooling effect during self-cleaning of the air conditioner.

[0028] The variable split flow control method based on subcooling provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0029] like Figure 2 As shown, an embodiment of the present application provides a variable split flow control method based on subcooling, which may include the following steps 201 and 202: Step 201: When the air conditioner is in cooling mode and in a stable operating state, determine whether the current ambient temperature meets user needs.

[0030] For example, the current ambient temperature cannot meet user needs, indicating that the cooling effect of the air conditioner has deteriorated. At this time, the air conditioner can be controlled according to the first control strategy and the second control strategy provided in the embodiment of the present application to improve the heat exchange capacity of the indoor unit, thereby improving the cooling capacity of the indoor unit.

[0031] Specifically, the step of determining whether the user's needs are met in the above step 201 may further include the following step 201a: Step 201a, obtain the current indoor ambient temperature and the set temperature of the air conditioner, and calculate the temperature difference between the current ambient temperature and the set temperature. If the temperature difference is greater than the preset difference, it is determined that the current ambient temperature cannot meet the user's needs. Otherwise, the current ambient temperature can meet the user's needs.

[0032] For example, if the indoor ambient temperature cannot meet the user's needs after the air conditioner is running stably, it can be determined that the heat exchange capacity of the indoor heat exchanger is reduced. At this time, the operation of the air conditioner can be controlled according to the control method provided in the embodiment of the present application to improve the heat exchange capacity of the indoor heat exchanger and thereby improve the cooling effect.

[0033] Step 202: When the current ambient temperature cannot meet the user's needs, calculate the current supercooling degree, and execute the first control strategy and the second control strategy in sequence based on the current supercooling degree until the preset condition is met.

[0034] Among them, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion mode of the diverter includes: single-way diversion and double-way diversion; the preset conditions include: increased supercooling; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

[0035] For example, in an embodiment of the present application, when it is determined that the current indoor ambient temperature does not meet the user's cooling needs, the supercooling degree of the air conditioner can be calculated, and judgment and control can be performed based on the supercooling degree to improve the heat exchange capacity of the indoor heat exchanger.

[0036] Specifically, the step of calculating the degree of subcooling in the above step 202 may further include the following steps 202a1 and 202a2: Step 202a1, obtaining the outlet pressure of the condenser and the liquid temperature at the outlet of the condenser, and determining the saturation temperature by looking up a table based on the outlet pressure.

[0037] Step 202a2: Calculate the difference between the saturation temperature and the liquid temperature to obtain the current degree of subcooling.

[0038] For example, in the embodiment of the present application, the degree of supercooling can be calculated according to the following formula 1: (Formula 1)

[0039] in, P is the supercooling degree, is the saturation temperature corresponding to the condenser outlet pressure, is the refrigerant temperature at the condenser outlet.

[0040] Specifically, the control step in the above step 202 may further include the following steps 202b1 and 202b2: Step 202b1: when the current supercooling degree is less than a preset supercooling degree threshold, execute the first control strategy, and determine whether the preset condition is met after a first preset time period.

[0041] Step 202b2: If the preset condition is met, then when the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold, stop executing the first control strategy.

[0042] Exemplarily, when the calculated current degree of supercooling is less than a preset supercooling threshold, the first control strategy can be executed first, and it can be determined whether the degree of supercooling increases after a first preset time period; if so, it can be determined that the first control strategy is effective, and the second control strategy can be not executed first.

[0043] Specifically, after the above step 202b1, the control step in the above step 202 may further include the following steps 202b3 and 202b4: Step 202b3: If the preset condition is not met, execute the second control strategy, and determine whether the preset condition is met after a second preset time.

[0044] Step 202b3: If the preset condition is met, then when the degree of supercooling of the air conditioner is greater than or equal to the preset degree of supercooling threshold, stop executing the second control strategy.

[0045] For example, if the increase in supercooling caused by the first control strategy is low and still cannot reach the preset supercooling threshold, the second control strategy can be executed after the first control strategy is executed until the supercooling is greater than or equal to the preset supercooling threshold.

[0046] Further, in the embodiment of the present application, after the above step 201, the variable split flow control method based on subcooling provided in the embodiment of the present application may further include the following step 203: Step 203: When the current supercooling degree is greater than or equal to the preset supercooling degree threshold, the current operating state of the air conditioner is maintained unchanged.

[0047] Exemplarily, if the current supercooling degree is greater than or equal to the preset supercooling degree threshold, no operation may be performed and the room temperature may be waited for to drop.

[0048] For example, Figure 3 As shown, a flow divider connected to the throttling unit is provided. The flow divider can be an integral structure with the throttling unit or a separate structure. When the supercooling degree of the air conditioner is low, the supercooling degree of the air conditioner can be improved by adjusting the flow diversion mode of the flow divider. The adjustment mode includes: adjusting from single-way flow diversion to dual-way flow diversion, or adjusting from dual-way flow diversion to single-way flow diversion.

[0049] based on Figure 3 ,like Figure 4 As shown, the two diverter pipes (including pipe A and pipe B) of the diverter can be connected to two pipes on the outdoor heat exchanger respectively so that the diverting mode can be adjusted.

[0050] The variable shunt control method based on supercooling provided in the embodiment of the present application first determines whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; then, when the current ambient temperature cannot meet the user's needs, the current supercooling is calculated, and the first control strategy and the second control strategy are executed in sequence based on the current supercooling until the preset conditions are met; wherein, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset conditions include: increased supercooling; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode, thereby avoiding the situation of increased power consumption and poor cooling effect during the self-cleaning of the air conditioner.

[0051] It should be noted that the variable shunt control method based on supercooling provided in the embodiment of the present application can be executed by a variable shunt control device based on supercooling, or a control module in the variable shunt control device based on supercooling for executing the variable shunt control method based on supercooling. In the embodiment of the present application, the variable shunt control device based on supercooling is taken as an example to illustrate the variable shunt control method based on supercooling provided in the embodiment of the present application.

[0052] It should be noted that, in the embodiments of the present application, the variable shunt control methods based on supercooling shown in the above-mentioned method drawings are all illustrated by combining one of the drawings in the embodiments of the present application as an example. In specific implementation, the variable shunt control methods based on supercooling shown in the above-mentioned method drawings can also be implemented in combination with any other drawings that can be combined as shown in the above-mentioned embodiments, which will not be repeated here.

[0053] The variable split flow control device based on subcooling provided in the present application is described below, and the variable split flow control method based on subcooling described below and described above can refer to each other.

[0054] Figure 5 A schematic diagram of a variable flow split control device based on subcooling provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, specifically including: The judgment module 501 is used to judge whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; the calculation module 502 is used to calculate the current supercooling degree when the current ambient temperature cannot meet the user's needs; the control module 503 is used to execute the first control strategy and the second control strategy in sequence based on the current supercooling degree until the preset conditions are met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion modes of the diverter include: single-way diversion and double-way diversion; the preset conditions include: increased supercooling degree; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

[0055] Optionally, the device also includes: an acquisition module; the acquisition module is used to obtain the current indoor ambient temperature and the set temperature of the air conditioner; the calculation module 502 is also used to calculate the temperature difference between the current ambient temperature and the set temperature; the judgment module 501 is specifically used to determine that the current ambient temperature cannot meet user needs if the temperature difference is greater than a preset difference, otherwise, the current ambient temperature can meet user needs.

[0056] Optionally, the acquisition module is also used to obtain the outlet pressure of the condenser and the liquid temperature at the outlet of the condenser; the calculation module 502 is specifically used to determine the saturation temperature by looking up a table based on the outlet pressure; the calculation module 502 is also specifically used to calculate the difference between the saturation temperature and the liquid temperature to obtain the current degree of subcooling.

[0057] Optionally, the control module 503 is specifically used to execute the first control strategy when the current supercooling degree is less than a preset supercooling degree threshold, and determine whether the preset condition is met after a first preset time period; the control module 503 is also specifically used to stop executing the first control strategy if the preset condition is met and the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0058] Optionally, the control module 503 is specifically used to execute the second control strategy if the preset condition is not met, and determine whether the preset condition is met after a second preset time period; the control module 503 is also specifically used to stop executing the second control strategy if the preset condition is met and the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

[0059] Optionally, the control module 503 is further configured to keep the current operating state of the air conditioner unchanged when the current supercooling degree is greater than or equal to the preset supercooling degree threshold.

[0060] The variable shunt control device based on supercooling provided by the present application first determines whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; then, when the current ambient temperature cannot meet the user's needs, the current supercooling is calculated, and the first control strategy and the second control strategy are executed in sequence based on the current supercooling until the preset conditions are met; wherein, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset conditions include: increased supercooling; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode, avoiding the situation of increased power consumption and poor cooling effect when the air conditioner is self-cleaned.

[0061] Figure 6 The physical structure diagram of an electronic device is shown as an example. The electronic device may be the above-mentioned air conditioner. Figure 6As shown, the electronic device may include: a processor (processor) 610, a communication interface (CommunicationsInterface) 620, a memory (memory) 630 and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 can call the logic instructions in the memory 630 to execute the variable shunt control method based on supercooling, which includes: first, when the air conditioner is in cooling mode and in a stable operating state, determine whether the current ambient temperature meets the user's needs; then, when the current ambient temperature cannot meet the user's needs, calculate the current supercooling, and execute the first control strategy and the second control strategy in sequence based on the current supercooling until the preset condition is met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset condition includes: supercooling increases; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode to avoid the increase in power consumption and poor cooling effect during the self-cleaning of the air conditioner.

[0062] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0063] On the other hand, the present application also provides a computer program product, the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, when the program instructions are executed by the computer, the computer can execute the variable shunt control method based on supercooling provided by the above methods, the method includes: first, when the air conditioner is in cooling mode and in a stable operating state, judging whether the current ambient temperature meets the user's needs; then, when the current ambient temperature cannot meet the user's needs, calculating the current supercooling, and sequentially executing the first control strategy and the second control strategy based on the current supercooling until the preset condition is met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset condition includes: supercooling increases; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode, avoiding the situation of increased power consumption and poor cooling effect during self-cleaning of the air conditioner.

[0064] On the other hand, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to execute the variable shunt control method based on supercooling provided above, the method comprising: first, when the air conditioner is in cooling mode and in a stable operating state, judging whether the current ambient temperature meets the user's needs; then, when the current ambient temperature cannot meet the user's needs, calculating the current supercooling, and sequentially executing the first control strategy and the second control strategy based on the current supercooling until the preset condition is met; wherein the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the shunt mode of the shunt; the shunt mode of the shunt includes: single-way shunt and double-way shunt; the preset condition includes: supercooling increases; one end of the shunt is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit. In this way, when the heat exchange capacity is reduced, the heat exchange capacity can be increased by changing the shunt mode, avoiding the situation of increased power consumption and poor cooling effect during self-cleaning of the air conditioner.

[0065] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0066] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A variable split flow control method based on subcooling, characterized in that: A control unit applied to an air conditioner, the method comprising: When the air conditioner is in cooling mode and in a stable operating state, determine whether the current ambient temperature meets the user's needs; When the current ambient temperature cannot meet the user's needs, the current supercooling degree is calculated, and the first control strategy and the second control strategy are sequentially executed based on the current supercooling degree until the preset conditions are met; Among them, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion mode of the diverter includes: single-way diversion and double-way diversion; the preset conditions include: increased supercooling; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

2. The method according to claim 1, characterized in that: The determining whether the current ambient temperature meets the user's requirements includes: The current indoor ambient temperature and the set temperature of the air conditioner are obtained, and the temperature difference between the current ambient temperature and the set temperature is calculated. If the temperature difference is greater than the preset difference, it is determined that the current ambient temperature cannot meet the user's needs. Otherwise, the current ambient temperature can meet the user's needs.

3. The method according to claim 1, characterized in that The calculating of the current supercooling degree comprises: Obtaining the outlet pressure of the condenser and the liquid temperature at the outlet of the condenser, and determining the saturation temperature by looking up a table based on the outlet pressure; The difference between the saturation temperature and the liquid temperature is calculated to obtain the current degree of subcooling.

4. The method according to claim 1, characterized in that: The sequentially executing the first control strategy and the second control strategy based on the current supercooling degree until a preset condition is met includes: When the current supercooling degree is less than a preset supercooling degree threshold, executing the first control strategy, and determining whether the preset condition is met after a first preset time period; If the preset condition is met, then when the degree of supercooling of the air conditioner is greater than or equal to the preset supercooling threshold, the first control strategy is stopped.

5. The method according to claim 4, characterized in that The sequentially executing the first control strategy and the second control strategy based on the current supercooling degree until a preset condition is met includes: If the preset condition is not met, the second control strategy is executed, and after a second preset time period, it is determined whether the preset condition is met; If the preset condition is met, then when the degree of supercooling of the air conditioner is greater than or equal to the preset supercooling threshold, the second control strategy is stopped.

6. The method according to claim 4 or 5, characterized in that: After determining whether the current ambient temperature meets the user's requirements, the method further includes: When the current supercooling degree is greater than or equal to the preset supercooling degree threshold, the current operating state of the air conditioner is kept unchanged.

7. A variable flow split control device based on subcooling, characterized in that: The device comprises: A judgment module, used to judge whether the current ambient temperature meets the user's needs when the air conditioner is in cooling mode and in a stable operating state; A calculation module, used to calculate the current supercooling degree when the current ambient temperature cannot meet the user's needs; A control module, configured to sequentially execute a first control strategy and a second control strategy based on the current supercooling degree until a preset condition is met; Among them, the first control strategy is to adjust the fan speed of the indoor unit; the second control strategy is to adjust the diversion mode of the diverter; the diversion mode of the diverter includes: single-way diversion and double-way diversion; the preset conditions include: increased supercooling; one end of the diverter is connected to the throttling unit, and the other end is connected to the heat exchanger on the outdoor unit.

8. The device according to claim 7, characterized in that The control module is specifically configured to execute the first control strategy when the current supercooling degree is less than a preset supercooling degree threshold, and determine whether the preset condition is met after a first preset time period; The control module is further specifically configured to stop executing the first control strategy if the preset condition is met and the supercooling degree of the air conditioner is greater than or equal to the preset supercooling degree threshold.

9. An air conditioner, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the variable split flow control method based on subcooling as claimed in any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the steps of the variable split flow control method based on subcooling as claimed in any one of claims 1 to 6 are implemented.

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