Air conditioner and defrosting control method

Abstract

The invention provides an air conditioner and a defrosting control method which are applied to the field of air conditioner control, and the method comprises the steps that when the air conditioner operates in a defrosting mode, operation parameters of the air conditioner are obtained; whether a preset triggering condition is met or not is judged based on the operation parameters, and on the condition that it is determined that the preset triggering condition is met, a control valve arranged on the auxiliary defrosting pipeline is controlled to be opened and closed; wherein the operation parameters comprise the operation duration of the defrosting mode and the detection value of a temperature sensor arranged on a liquid pipe at the bottom of the condenser; the preset triggering conditions comprise a first triggering condition for opening the control valve and a second triggering condition for closing the control valve. According to the air conditioner and the defrosting control method, the refrigerant flow at the bottom of the heat exchanger can be automatically increased when it is judged that defrosting is not thorough through the improved outdoor unit, so that the temperature of the bottom of the heat exchanger can be rapidly increased, and the purpose of thorough defrosting is achieved.

Description

Technical Field

[0001] The present application relates to the field of air conditioner control, and in particular to an air conditioner and a defrosting control method. Background Art

[0002] With the continuous improvement of people's living standards and the continuous improvement of the intelligent level of household electrical appliances, intelligent household appliances are becoming more and more popular. Users can use the air conditioner for heating in winter to increase the indoor temperature; they can also use the air conditioner for cooling in summer to reduce the indoor temperature.

[0003] When the air conditioner operates in the heating mode, the surface of the outdoor unit condenser may frost. When the defrosting condition is met, the air conditioner will enter the defrosting mode for defrosting. In the related art, it is usually judged whether to exit defrosting by the temperature change of the defrosting sensor arranged on the liquid path of the heat exchanger. When the temperature of the defrosting sensor rises to the set value, the system judges that the defrosting is clean and exits the defrosting mode.

[0004] However, in such a defrosting method, when the bottom of the heat exchanger freezes or there is snow accumulation, the temperature of the defrosting sensor will not reach the defrosting exit condition for a long time, which will not only cause the situation of liquid suction by the compressor, but also make the whole system unable to heat normally, affecting the normal use of users. Summary of the Invention

[0005] The purpose of the present application is to provide an air conditioner and a defrosting control method. The improved outdoor unit can automatically increase the refrigerant flow rate at the bottom of the heat exchanger when it is judged that the defrosting is incomplete, so as to quickly raise the temperature at the bottom of the heat exchanger and achieve the purpose of complete defrosting.

[0006] In a first aspect, an embodiment of the present application provides an air conditioner, including: A bypass pipeline, one end of the bypass pipeline is connected to the outlet of the oil separator, and the other end is connected to the bottom gas pipeline of the condenser; a control valve, the control valve is arranged on the bypass pipeline and is located between the oil separator and the condenser; a control unit, the control unit is electrically connected to the control valve to control the opening and closing of the control valve, so as to control the conduction and closing of the bypass pipeline.

[0007] Optionally, a temperature sensor is arranged on the bottom liquid pipeline of the condenser, and the temperature sensor is used to detect the liquid outlet temperature of the bottom liquid pipeline of the condenser; when the air conditioner operates in the defrosting mode, the control unit controls the opening and closing of the control valve based on the liquid outlet temperature.

[0008] In a second aspect, the present application provides a defrosting control method, which is applied to the air conditioner described in the first aspect, and the method includes: When the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner; based on the operating parameters, determine whether a preset trigger condition is satisfied, and when it is determined that the preset trigger condition is satisfied, control the opening and closing of the control valve; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of the temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: a first trigger condition for opening the control valve, a second trigger condition for closing the control valve.

[0009] Optionally, the determining whether the preset trigger condition is satisfied based on the operating parameters includes: when the operating duration of the defrosting mode is greater than or equal to a preset operating duration, if the detection value of the temperature sensor is less than a first temperature threshold, it is determined that the first trigger condition is satisfied.

[0010] Optionally, the controlling the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied includes: when it is determined that the first trigger condition is satisfied, controlling the control valve to open, and inputting the high-temperature refrigerant output by the oil separator to the bottom of the condenser to remove the defrosting residue at the bottom of the condenser.

[0011] Optionally, the determining whether the preset trigger condition is satisfied based on the operating parameters includes: when the control valve is in an open state, if the detection value of the temperature sensor is greater than or equal to a second temperature threshold, it is determined that the second trigger condition is satisfied.

[0012] Optionally, the controlling the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied includes: when it is determined that the second trigger condition is satisfied, controlling the control valve to close, and performing defrosting control based on the preset defrosting control strategy of the air conditioner.

[0013] Optionally, the second temperature threshold is greater than the first temperature threshold, and the first temperature threshold and the second temperature threshold are positively correlated with the dry bulb temperature of the current environment.

[0014] In a third aspect, the present application further provides a defrosting control device, which is applied to the air conditioner described in the first aspect. The device includes: An acquisition module, configured to acquire the operating parameters of the air conditioner when the air conditioner is operating in a defrosting mode; a judgment module, configured to judge whether a preset trigger condition is satisfied based on the operating parameters; a control module, configured to control the opening and closing of a control valve provided on an auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied; wherein, the operating parameters include: the operating duration of the defrosting mode, and the detection value of a temperature sensor provided on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: a first trigger condition for opening the control valve, and a second trigger condition for closing the control valve.

[0015] In this way, the improved outdoor unit can automatically increase the refrigerant flow rate at the bottom of the heat exchanger when it is judged that the defrosting is incomplete, so that the bottom of the heat exchanger can be quickly heated up to achieve the purpose of complete defrosting.

[0016] Optionally, the judgment module is specifically configured to, when the operating duration of the defrosting mode is greater than or equal to a preset operating duration, if the detection value of the temperature sensor is less than a first temperature threshold, determine that the first trigger condition is satisfied.

[0017] Optionally, the control module is specifically configured to, when it is determined that the first trigger condition is satisfied, control the control valve to open, input the high-temperature refrigerant output by the oil separator to the bottom of the condenser, and remove the defrosting residue at the bottom of the condenser.

[0018] In this way, when it is judged that the condition for opening the auxiliary defrosting is satisfied, the control valve can be controlled to open, so that the high-temperature refrigerant flows into the bottom of the condenser for defrosting.

[0019] Optionally, the judgment module is specifically configured to, when the control valve is in an open state, if the detection value of the temperature sensor is greater than or equal to a second temperature threshold, determine that the second trigger condition is satisfied.

[0020] Optionally, the control module is specifically configured to, when it is determined that the second trigger condition is satisfied, control the control valve to close, and perform defrosting control based on the preset defrosting control strategy of the air conditioner.

[0021] In this way, when it is judged that the condition for closing the auxiliary defrosting is satisfied, the control valve can be controlled to close. After that, the air conditioner can be controlled according to the preset defrosting control strategy.

[0022] Optionally, the second temperature threshold is greater than the first temperature threshold, and the first temperature threshold and the second temperature threshold are positively correlated with the dry bulb temperature of the current environment.

[0023] The present application further provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the defrosting control method as described in any one of the above.

[0024] The present application further provides an electronic device, which may be an air conditioner. The air conditioner includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the steps of the defrosting control method as described in any one of the above.

[0025] The present application further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the defrosting control method as described in any one of the above.

[0026] The air conditioner and the defrosting control method provided by the present application. The improved air conditioner includes an auxiliary defrosting pipeline arranged at the bottom of the oil separator and the condenser; a control valve is arranged on the defrosting pipeline; the control unit of the air conditioner is used to control the opening and closing of the auxiliary defrosting pipeline through the control valve when the air conditioner is operating in the defrosting mode. When the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner; judge whether the preset trigger conditions are met based on the operating parameters, and control the opening and closing of the control valve when it is determined that the preset trigger conditions are met; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of the temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: the first trigger condition for opening the control valve, the second trigger condition for closing the control valve. In this way, the improved outdoor unit can automatically increase the refrigerant flow at the bottom of the heat exchanger when it is judged that the defrosting is incomplete, so as to quickly raise the temperature at the bottom of the heat exchanger and achieve the purpose of complete defrosting. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic structural diagram of the air conditioner provided by the present application; Figure 2 It is one of the flow schematic diagrams of the defrosting control method provided by the present application; Figure 3 It is the second flow schematic diagram of the defrosting control method provided by the present application; Figure 4It is a schematic structural diagram of the defrosting control device provided by the present application; Figure 5 It is a schematic structural diagram of the electronic device provided by the present application. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0030] 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 such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0031] The following provides a detailed description of the operating principle of the air conditioner involved in the embodiments of the present application: The compressor compresses the refrigerant (refrigerant medium) and transports it through a pipeline to the condenser. The high-temperature and high-pressure gaseous refrigerant releases heat in the condenser and becomes a medium-temperature and high-pressure liquid refrigerant. Then, the medium-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after the pressure is reduced by a capillary tube (throttling unit). The low-temperature and low-pressure liquid refrigerant is transported to the evaporator and evaporates from a liquid to a gas, absorbing 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.

[0032] In the conventional defrosting, it is judged whether to exit defrosting according to the temperature change of the defrosting sensor arranged on the liquid path of the heat exchanger. When the temperature of the defrosting sensor rises to the set value, the system judges that the defrosting is clean and exits the defrosting mode. However, when ice or snow accumulates at the bottom of the heat exchanger, the temperature of the defrosting sensor will not reach the defrosting exit condition for a long time. At this time, the defrosting mode will be exited according to the maximum defrosting duration. It can be seen that in the defrosting method in the related art, when ice or snow accumulates at the bottom of the heat exchanger, the scheme of exiting the defrosting mode according to the maximum duration set by the system cannot completely remove the remaining frost at the bottom of the heat exchanger.

[0033] In view of the above technical problems in the related art, an embodiment of the present application provides an air conditioner, which includes: a bypass pipeline, one end of the bypass pipeline is communicated with the outlet of the oil separator, and the other end is communicated with the bottom gas pipeline of the condenser; a control valve, the control valve is arranged on the bypass pipeline and is located between the oil separator and the condenser; a control unit, the control unit is electrically connected to the control valve to control the opening and closing of the control valve, so as to control the conduction and closing of the bypass pipeline.

[0034] Exemplarily, in order to judge when to open and close the control valve, a temperature sensor is arranged on the liquid pipeline at the bottom of the condenser, and the temperature sensor is used to detect the liquid outlet temperature of the liquid pipeline at the bottom of the condenser; when the air conditioner is operating in the defrosting mode, the control unit controls the opening and closing of the control valve based on the outlet temperature.

[0035] As Figure 1 shown, in the outdoor unit of the improved air conditioner, a path is introduced after the oil separator and merged with the last gas path (or other gas paths at the bottom) at the bottom of the condenser through a control valve (for example, an electric ball valve, an electronic expansion valve, etc.). The liquid outlet of the condenser is merged with other liquid paths and then connected to the main liquid path. And a temperature sensor T1 is arranged at the last liquid pipeline (or other gas paths at the bottom).

[0036] Next, with reference to the drawings, a defrosting control method provided by an embodiment of the present application will be described in detail through specific embodiments and their application scenarios.

[0037] As Figure 2 shown, a defrosting control method provided by an embodiment of the present application may include the following steps 201 and 202: Step 201, when the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner.

[0038] Wherein, the operating parameters include: the operating duration of the defrosting mode, and the detection value of the temperature sensor arranged on the liquid pipeline at the bottom of the condenser.

[0039] It should be noted that in the embodiments of the present application, the auxiliary defrosting pipeline is only opened for defrosting when it is determined that the defrosting of the air conditioner is incomplete. Therefore, it is necessary to make a judgment based on the operating parameters of the air conditioner.

[0040] Step 202: Determine whether a preset trigger condition is satisfied based on the operating parameters, and control the opening and closing of the control valve when it is determined that the preset trigger condition is satisfied.

[0041] Among them, the preset trigger condition includes: a first trigger condition for opening the control valve, and a second trigger condition for closing the control valve.

[0042] Exemplarily, when it is determined that the current operating state of the air conditioner satisfies the first trigger condition, the control valve can be controlled to open so that the auxiliary defrosting pipeline is conducted to achieve rapid defrosting of the bottom area of the condenser; when it is determined that the current operating state of the air conditioner satisfies the second trigger condition, the control valve can be controlled to close so that the air conditioner performs independent defrosting control according to the preset defrosting control strategy.

[0043] Specifically, the step of determining whether the first trigger condition is satisfied in step 202 above may further include the following step 202a1: Step 202a1: When the operating duration in the defrosting mode is greater than or equal to the preset operating duration, if the detected value of the temperature sensor is less than the first temperature threshold, it is determined that the first trigger condition is satisfied.

[0044] Exemplarily, after the air conditioner operates in the defrosting mode for more than the preset operating duration, it can be determined whether auxiliary defrosting is required according to the detected value of the temperature sensor T1. When the detected value of the temperature sensor is less than the first temperature threshold, it can be determined that the defrosting of the air conditioner is incomplete. At this time, the first trigger condition is satisfied.

[0045] Specifically, after it is determined in step 202a1 that the first trigger condition is satisfied, step 202 above may further include the following step 202a2: Step 202a2: When it is determined that the first trigger condition is satisfied, control the control valve to open, and input the high-temperature refrigerant output by the oil separator to the bottom of the condenser to remove the defrosting residue at the bottom of the condenser.

[0046] Exemplarily, when it is determined that the first trigger condition is satisfied, the control valve on the auxiliary defrosting pipeline can be controlled to open so that the high-temperature refrigerant output by the separator is input to the bottom of the condenser to remove the defrosting residue at the bottom of the condenser.

[0047] Specifically, the step of determining whether the second trigger condition is satisfied in step 202 above may further include the following step 202b1: Step 202b1: When the control valve is in the open state, if the detected value of the temperature sensor is greater than or equal to the second temperature threshold, it is determined that the second trigger condition is satisfied.

[0048] Exemplarily, when the air conditioner operates in the defrost mode for more than a preset operation duration and the auxiliary defrost function of the air conditioner is turned on, it is possible to determine when to appropriately stop the auxiliary defrost according to the detected value of the temperature sensor T1. When the detected value of the temperature sensor is greater than or equal to the second temperature threshold, it can be determined that the auxiliary defrost has completed the removal of the residue at the bottom of the condenser. At this time, it is determined that the second trigger condition is satisfied.

[0049] Exemplarily, the above second temperature threshold is greater than the first temperature threshold, and in the embodiments of the present application, the above first temperature threshold and second temperature threshold can be determined according to the dry bulb temperature of the current environment.

[0050] Specifically, after it is determined in the above step 202b1 that the second trigger condition is satisfied, the above step 202 may further include the following step 202b2: Step 202b2: When it is determined that the second trigger condition is satisfied, control the control valve to close, and perform defrost control based on the preset defrost control strategy of the air conditioner.

[0051] Exemplarily, when it is determined that the second trigger condition is satisfied, the control valve on the auxiliary defrost pipeline can be controlled to close, so that the high-temperature refrigerant output by the separator stops being input to the bottom of the condenser, and the system determines whether to exit the defrost according to the preset defrost exit condition.

[0052] Exemplarily, the second temperature threshold is greater than the first temperature threshold, and the first temperature threshold and the second temperature threshold are positively correlated with the dry bulb temperature of the current environment.

[0053] In this way, the improved outdoor unit can automatically increase the refrigerant flow rate at the bottom of the heat exchanger when it is determined that the defrost is incomplete, so as to quickly raise the temperature at the bottom of the heat exchanger and achieve the purpose of complete defrost.

[0054] For example, as Figure 3 shown, it is a detailed flowchart of the defrost control method provided by the embodiments of the present application. When the air conditioner operates in the defrost mode, first, it is determined whether the preset operation duration is exceeded. If so, the sensor temperature T1 is obtained, and the magnitude relationship between the temperature value T1 and TA1 (i.e., the above first temperature threshold) is determined. If T1 < TA1, the control valve is opened for bottom defrost. Then, the sensor temperature T1 is obtained again, and the magnitude relationship between the temperature value T1 and TA2 (i.e., the above second temperature threshold) is determined. If T1 ≥ TA2, the control valve is closed, and the system performs automatic control according to the preset defrost logic.

[0055] The defrost control method provided by the embodiment of the present application is applied to an improved air conditioner, which includes an auxiliary defrost pipeline arranged at the bottom of an oil separator and a condenser; a control valve is arranged on the defrost pipeline; a control unit of the air conditioner is configured to control the on and off of the auxiliary defrost pipeline through the control valve when the air conditioner is operating in a defrost mode. When the air conditioner is operating in a defrost mode, obtain the operating parameters of the air conditioner; determine whether the preset trigger conditions are met based on the operating parameters, and control the opening and closing of the control valve when it is determined that the preset trigger conditions are met; wherein, the operating parameters include: the operating duration of the defrost mode, the detection value of a temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: a first trigger condition for opening the control valve, a second trigger condition for closing the control valve. In this way, the improved outdoor unit can automatically increase the refrigerant flow rate at the bottom of the heat exchanger when it is determined that the defrosting is incomplete, so as to quickly raise the temperature at the bottom of the heat exchanger and achieve the purpose of complete defrosting.

[0056] It should be noted that the execution subject of the defrost control method provided by the embodiment of the present application can be a defrost control device, or a control module in the defrost control device for executing the defrost control method. In the embodiment of the present application, the defrost control method executed by the defrost control device is taken as an example to illustrate the defrost control device provided by the embodiment of the present application.

[0057] It should be noted that in the embodiment of the present application, the defrost control methods shown in the above respective method drawings are all exemplarily described by taking one drawing in the embodiment of the present application as an example. Specifically, when implemented, the defrost control methods shown in the above respective method drawings can also be implemented in combination with any other combinable drawings schemed in the above embodiments, which will not be elaborated here.

[0058] The defrost control device provided by the present application will be described below, and the following description can be mutually referred to corresponding to the defrost control method described above.

[0059] Figure 4 is a schematic structural diagram of a defrost control device provided by an embodiment of the present application, as Figure 4 shown, and specifically includes: An acquisition module 401, configured to acquire the operating parameters of the air conditioner when the air conditioner is operating in a defrosting mode; a judgment module 402, configured to judge whether a preset triggering condition is satisfied based on the operating parameters; a control module 403, configured to control the opening and closing of a control valve arranged on an auxiliary defrosting pipeline when it is determined that the preset triggering condition is satisfied; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of a temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset triggering conditions include: a first triggering condition for opening the control valve, a second triggering condition for closing the control valve.

[0060] Optionally, the judgment module 402 is specifically configured to, when the operating duration of the defrosting mode is greater than or equal to a preset operating duration, if the detection value of the temperature sensor is less than a first temperature threshold, determine that the first triggering condition is satisfied.

[0061] Optionally, the control module 403 is specifically configured to, when it is determined that the first triggering condition is satisfied, control the control valve to open, input the high-temperature refrigerant output by the oil separator to the bottom of the condenser, and remove the defrosting residue at the bottom of the condenser.

[0062] Optionally, the judgment module 402 is specifically configured to, when the control valve is in an open state, if the detection value of the temperature sensor is greater than or equal to a second temperature threshold, determine that the second triggering condition is satisfied.

[0063] Optionally, the control module 403 is specifically configured to, when it is determined that the second triggering condition is satisfied, control the control valve to close, and perform defrosting control based on the preset defrosting control strategy of the air conditioner.

[0064] Optionally, the second temperature threshold is greater than the first temperature threshold, and the first temperature threshold and the second temperature threshold are positively correlated with the dry bulb temperature of the current environment.

[0065] The defrosting control device provided by this application is applied to an improved air conditioner, which includes an auxiliary defrosting pipeline arranged at the bottom of the oil separator and the condenser; a control valve is arranged on the defrosting pipeline; the control unit of the air conditioner is used to control the opening and closing of the auxiliary defrosting pipeline through the control valve when the air conditioner is operating in the defrosting mode. When the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner; judge whether the preset trigger conditions are met based on the operating parameters, and control the opening and closing of the control valve when it is determined that the preset trigger conditions are met; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of the temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: the first trigger condition for opening the control valve, the second trigger condition for closing the control valve. In this way, the improved outdoor unit can automatically increase the refrigerant flow at the bottom of the heat exchanger when it is judged that the defrosting is incomplete, so as to quickly raise the temperature at the bottom of the heat exchanger and achieve the purpose of complete defrosting.

[0066] Figure 5 An example of a schematic physical structure diagram of an electronic device, which can be the above-mentioned air conditioner, is as follows Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540. Among them, the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logical instructions in the memory 530 to execute the defrosting control method, which includes: when the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner; judge whether the preset trigger conditions are met based on the operating parameters, and control the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger conditions are met; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of the temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset trigger conditions include: the first trigger condition for opening the control valve, the second trigger condition for closing the control valve.

[0067] In addition, when the logical instructions in the above-mentioned memory 530 can be implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs.

[0068] On the other hand, this 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 a computer, the computer can execute the defrosting control method provided by the above-mentioned various methods. The method includes: when the air conditioner is operating in the defrosting mode, obtaining the operating parameters of the air conditioner; based on the operating parameters, determining whether a preset trigger condition is met, and when it is determined that the preset trigger condition is met, controlling the opening and closing of a control valve provided on an auxiliary defrosting pipeline; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of a temperature sensor provided on the liquid pipe at the bottom of the condenser; the preset trigger condition includes: a first trigger condition for opening the control valve, a second trigger condition for closing the control valve.

[0069] On another aspect, this application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is configured to execute the defrosting control method provided by the above-mentioned various methods. The method includes: when the air conditioner is operating in the defrosting mode, obtaining the operating parameters of the air conditioner; based on the operating parameters, determining whether a preset trigger condition is met, and when it is determined that the preset trigger condition is met, controlling the opening and closing of a control valve provided on an auxiliary defrosting pipeline; wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of a temperature sensor provided on the liquid pipe at the bottom of the condenser; the preset trigger condition includes: a first trigger condition for opening the control valve, a second trigger condition for closing the control valve.

[0070] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative work.

[0071] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

Claims

1. An air conditioner, characterized in that, Including: A bypass pipeline, one end of the bypass pipeline is connected to the outlet of the oil separator, and the other end is connected to the bottom gas pipe of the condenser; A control valve, the control valve is arranged on the bypass pipeline and is located between the oil separator and the condenser; A control unit, the control unit is electrically connected to the control valve to control the opening and closing of the control valve, so as to control the conduction and closing of the bypass pipeline.

2. The air conditioner according to claim 1, wherein A temperature sensor is arranged on the bottom liquid pipe of the condenser, and the temperature sensor is used to detect the liquid outlet temperature of the bottom liquid pipe of the condenser; When the air conditioner is operating in the defrosting mode, the control unit controls the opening and closing of the control valve based on the liquid outlet temperature.

3. A defrosting control method, characterized in that, Applied to the air conditioner according to claim 1 or 2, the method includes: When the air conditioner is operating in the defrosting mode, obtain the operating parameters of the air conditioner; Based on the operating parameters, determine whether the preset trigger condition is satisfied, and when it is determined that the preset trigger condition is satisfied, control the opening and closing of the control valve; Wherein, the operating parameters include: the operating duration of the defrosting mode, the detection value of the temperature sensor arranged on the bottom liquid pipe of the condenser; the preset trigger conditions include: a first trigger condition for opening the control valve, a second trigger condition for closing the control valve.

4. The method according to claim 3, wherein The determining whether the preset trigger condition is satisfied based on the operating parameters includes: When the operating duration of the defrosting mode is greater than or equal to the preset operating duration, if the detection value of the temperature sensor is less than the first temperature threshold, it is determined that the first trigger condition is satisfied.

5. The method according to claim 4, characterized in that, The controlling the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied includes: When it is determined that the first trigger condition is satisfied, control the control valve to open, input the high-temperature refrigerant output by the oil separator to the bottom of the condenser, and remove the defrosting residue at the bottom of the condenser.

6. The method according to claim 5, characterized in that, The determining whether the preset trigger condition is satisfied based on the operating parameters includes: When the control valve is in the open state, if the detection value of the temperature sensor is greater than or equal to the second temperature threshold, it is determined that the second trigger condition is satisfied.

7. The method according to claim 6, wherein The controlling the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied includes: When it is determined that the second trigger condition is satisfied, control the control valve to close, and perform defrosting control based on the preset defrosting control strategy of the air conditioner.

8. The method according to claim 6 or 7, characterized in that The second temperature threshold is greater than the first temperature threshold, and the first temperature threshold and the second temperature threshold are positively correlated with the dry bulb temperature of the current environment.

9. A defrosting control device, characterized in that, Applied to the air conditioner according to claim 1 or 2, the device includes: An acquisition module, configured to acquire the operating parameters of the air conditioner when the air conditioner is operating in the defrosting mode; A judgment module, configured to judge whether the preset trigger condition is satisfied based on the operating parameters; A control module, configured to control the opening and closing of the control valve arranged on the auxiliary defrosting pipeline when it is determined that the preset trigger condition is satisfied; Among them, the operating parameters include: the operating duration of the defrosting mode, and the detection value of the temperature sensor arranged on the liquid pipe at the bottom of the condenser; the preset triggering conditions include: a first triggering condition for opening the control valve, and a second triggering condition for closing the control valve.

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 defrosting control method according to any one of claims 3 to 7 are implemented.

Images