Compressor preheating control method and device, electronic equipment and computer storage medium

Abstract

The application relates to the air conditioning technical field, and discloses a compressor preheating control method and device, electronic equipment and computer storage medium, the method comprises the following steps: after the air conditioning unit is powered on and the start-up instruction is sent, parameter list information of the air conditioning unit is acquired; the exhaust temperature of the exhaust port of the compressor in the air conditioning unit, the outdoor environment temperature of the air conditioning unit and the power-off duration are acquired based on the parameter list information; the preheating duration of the compressor is determined based on the exhaust temperature, the outdoor environment temperature and the power-off duration; and the compressor is preheated based on the preheating duration. According to the outdoor environment temperature and the power-off duration, the preheating time of the application embodiment can be reasonably calculated to preheat the compressor, so that the oil pool of the compressor can be preheated, the refrigerant in the oil pool can be gasified, the hydraulic compression of the compressor and the dilution of the oil of the compressor are solved, and the damage of the compressor and the damage of the moving parts of the compressor are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to a compressor preheating control method and device, an electronic device, and a computer storage medium. BACKGROUND

[0002] When an air conditioning unit is running in winter, the ambient temperature is generally low, and the ambient temperature can even be lower than -35℃. When the air conditioning unit is stationary at a low ambient temperature, the refrigerant will migrate from the high-temperature indoor side to the low-temperature condenser and compressor, and therefore, the oil pool of the compressor will deposit a large amount of refrigerant. If the compressor is started at this time, the compressor will form a liquid compressor, which can cause damage to the compressor. At the same time, too much refrigerant in the oil pool of the compressor can also dilute the oil of the compressor, which can cause damage to the moving parts of the compressor due to poor lubrication. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a compressor preheating control method and device, an electronic device, and a computer storage medium, which can solve the problems of liquid compression of the compressor and dilution of the oil of the compressor, and avoid damage to the compressor and the moving parts of the compressor.

[0004] In a first aspect, the present application provides a compressor preheating control method, comprising:

[0005] After the air conditioning unit is powered on and an operation instruction is issued, parameter list information of the air conditioning unit is obtained;

[0006] Based on the parameter list information, an exhaust temperature of an exhaust port of a compressor in the air conditioning unit, a power-off duration of the compressor, and an outdoor ambient temperature of the air conditioning unit are obtained;

[0007] Based on the exhaust temperature, the outdoor ambient temperature, and the power-off duration, a preheating duration of the compressor is determined;

[0008] The preheating duration is used to control the preheating of the compressor.

[0009] In an embodiment, based on the exhaust temperature, the outdoor ambient temperature, and the power-off duration, the preheating time of the compressor is calculated, comprising:

[0010] If the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor ambient temperature is less than the open crankshaft ring temperature, and the power-off duration is greater than a preset minimum preheating power-off time of the compressor, a target temperature influence coefficient of the outdoor ambient temperature is obtained based on a mapping relationship between a preset temperature influence coefficient and a preset temperature range;

[0011] obtaining preset maximum preheating power-off time, minimum preheating time and maximum preheating time of the compressor;

[0012] determining the preheating time based on the target temperature influence coefficient, the power-off duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time and the maximum preheating time.

[0013] In an embodiment, determining the preheating time based on the target temperature influence coefficient, the power-off duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time and the maximum preheating time comprises:

[0014] calculating a first difference value based on the power-off duration and the minimum preheating power-off time;

[0015] calculating a second difference value based on the maximum preheating power-off time and the minimum preheating power-off time;

[0016] calculating a third difference value based on the maximum preheating time and the minimum preheating time;

[0017] determining the preheating time based on the target temperature influence coefficient, the first difference value, the second difference value, the third difference value and the maximum preheating time.

[0018] In an embodiment, controlling the compressor to preheat based on the preheating duration comprises:

[0019] obtaining oil temperature of lubricating oil in an oil pool of the compressor when the compressor is preheated;

[0020] determining a temperature comparison result between the oil temperature and a preset oil temperature threshold;

[0021] determining a preheating strategy of the compressor based on the temperature comparison result;

[0022] controlling the compressor to preheat based on the preheating duration and the preheating strategy.

[0023] In an embodiment, determining a preheating strategy of the compressor based on the temperature comparison result comprises:

[0024] if the temperature comparison result is that the oil temperature is less than or equal to the preset oil temperature threshold, determining the preheating strategy as an external heater preheating strategy; the external heater preheating strategy represents preheating the lubricating oil by using an external electric heater of the compressor; or,

[0025] If the temperature comparison result is that the oil temperature is greater than the preset oil temperature threshold, the preheating strategy is determined based on the power-off duration.

[0026] In an embodiment, determining the preheating strategy based on the power-off duration comprises:

[0027] The power-off duration is determined by comparing the power-off duration with a first preset power-off threshold and a second preset power-off threshold; the first preset power-off threshold is greater than the second preset power-off threshold.

[0028] If the duration comparison result is that the power-off duration is greater than the first preset power-off threshold, the preheating strategy is determined as the external heater preheating strategy; or,

[0029] If the duration comparison result is that the power-off duration is greater than or equal to the second preset power-off threshold and less than the first preset power-off threshold, the preheating strategy is determined as an internal heater preheating strategy; the internal heater preheating strategy represents preheating the lubricating oil by using an internal electric heater of the compressor; or,

[0030] If the duration comparison result is that the power-off duration is less than the second preset power-off threshold, the preheating strategy is determined as a circulating loop preheating strategy; the circulating loop preheating strategy represents preheating the lubricating oil by using an internal circulating loop of the compressor.

[0031] In an embodiment, the compressor preheating control method further comprises:

[0032] Obtaining a first output voltage of an output end of the compressor when preheating the compressor;

[0033] If the first output voltage is higher than a first preset level, recording an opening duration of the compressor;

[0034] If the opening duration reaches the preheating duration, obtaining a second output voltage of the output end of the compressor;

[0035] If the second output voltage is lower than a second preset level, controlling the compressor to start.

[0036] In a second aspect, the embodiments of the present application provide a compressor preheating control device, comprising:

[0037] A first obtaining module is configured to obtain parameter list information of an air conditioning unit after the air conditioning unit is powered on and an operation instruction is issued;

[0038] A second obtaining module is configured to obtain an exhaust temperature of an exhaust port of a compressor in the air conditioning unit, and an outdoor environment temperature and a power-off duration of the air conditioning unit based on the parameter list information.

[0039] determining a preheating time length of the compressor based on the exhaust temperature, the outdoor ambient temperature and the power-off time length;

[0040] controlling the compressor to preheat based on the preheating time length.

[0041] In a third aspect, an electronic device is provided, which includes a memory storing a plurality of computer programs, and a processor loading the computer programs from the memory to execute any of the compressor preheating control methods provided in the embodiments of the present application.

[0042] In a fourth aspect, a computer readable storage medium is provided, which stores a plurality of computer programs, and the computer programs are adapted to be loaded by a processor to execute any of the compressor preheating control methods provided in the embodiments of the present application.

[0043] In a fifth aspect, a computer program product is provided, which includes a computer program, and the computer program is executed by a processor to implement any of the compressor preheating control methods provided in the embodiments of the present application.

[0044] According to the embodiments of the present application, before the air conditioning unit is started, the preheating time can be reasonably calculated according to the outdoor ambient temperature and the power-off time length, so as to preheat the compressor, thereby preheating the oil pool of the compressor, gasifying the refrigerant in the oil pool, solving the problems of liquid compression of the compressor and dilution of the oil of the compressor, and avoiding damage of the compressor and damage of the moving parts of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some of the embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0046] Figure 1 is one of the flowcharts of the compressor preheating control method provided in the embodiments of the present application;

[0047] Figure 2 is another flowchart of the compressor preheating control method provided in the embodiments of the present application;

[0048] Figure 3 is a structural schematic diagram of the compressor preheating control device provided in the embodiments of the present application;

[0049] Figure 4is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application. Meanwhile, in the description of the embodiments of the present application, the terms "first", "second", and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance. Therefore, the features with "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited.

[0051] The embodiments of the present application provide a compressor preheating control method and device, an electronic device, and a computer storage medium. Specifically, the embodiments of the present application will be described from the perspective of a compressor preheating control device. The compressor preheating control device is a device containing a compressor. Therefore, the compressor preheating control device can include an air conditioning device, a ventilation device, a refrigeration device, a cooling device, and the like.

[0052] It should be noted that the sequence of the following embodiments is not limited as the preferred sequence of the embodiments. Although the logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in an order different from that shown in the figure.

[0053] The embodiments of the present application take an air conditioning device as an execution subject for example, which will be described in detail below in combination with the drawings. Referring to Figure 1 , Figure 1 is one of flowcharts of a compressor preheating control method provided in an embodiment of the present application. The specific flow of the compressor preheating control method provided in the embodiments of the present application can include the following steps 10 to 40, comprising:

[0054] Step 10, after the air conditioning unit is powered on and an operation instruction is issued, parameter list information of the air conditioning unit is acquired.

[0055] Optionally, after the air conditioning unit is powered on for a preset time length, such as 60 seconds, whether the air conditioning unit has an operation requirement, that is, whether the operation instruction issued by the air conditioning unit is received, is detected. If the operation instruction issued by the air conditioning unit is received, a parameter list of the air conditioning unit is acquired, wherein the parameter list at least includes one of a temperature parameter, a humidity parameter, a pressure parameter, and a running time length parameter.

[0056] Step 20, based on the parameter list information, obtaining the exhaust temperature of the exhaust port of the compressor in the air conditioning unit, the power-off duration of the compressor, and the outdoor environment temperature of the air conditioning unit.

[0057] Optionally, the parameter information in the obtained parameter list is compared with the parameter information of the air conditioning unit at the factory setting to determine whether the parameter information of both is consistent.

[0058] If any one of the parameter information in the obtained parameter list is inconsistent with the parameter information of the air conditioning unit at the factory setting, it is determined that the air conditioning unit is a non-first power-on start, wherein the non-first power-on start means that the compressor can be normally started without any auxiliary heating.

[0059] If any one of the parameter information in the obtained parameter list is consistent with the parameter information of the air conditioning unit at the factory setting, it is determined that the air conditioning unit is a first power-on start, wherein the first power-on start means that the compressor can be normally started with external auxiliary heating.

[0060] Optionally, after it is determined that the air conditioning unit is a first power-on start, it is necessary to determine whether the compressor needs to start preheating according to the exhaust temperature of the exhaust port of the compressor in the air conditioning unit, the power-off duration of the compressor, and the outdoor environment temperature of the air conditioning unit, so it is necessary to obtain the exhaust temperature, the outdoor environment temperature and the power-off duration.

[0061] The exhaust temperature and the outdoor environment temperature can be obtained by the temperature sensor in the air conditioning unit. The power-off duration is obtained as follows: in the case of power-off of the compressor, start the timer to time, take the time when the timer starts timing as the initial time of power-off, and take the time when the compressor is powered on as the end time of power-off. Calculate the initial time of power-off and the end time of power-off to obtain the power-off duration of the compressor.

[0062] It can be understood that in the case of power-off of the compressor, a preset timer is started to time, the time when the timer starts timing is taken as the initial time of power-off, and the time when the compressor is powered on is taken as the end time of power-off. The initial time of power-off is m1, the end time of power-off is m2, and the power-off duration is T1. T1 = |m2-m1|, wherein T1 is the power-off duration of the compressor, m1 is the initial time of power-off, and m2 is the end time of power-off.

[0063] Step 30, based on the exhaust temperature, the outdoor environment temperature and the power-off duration, determining the preheating duration of the compressor.

[0064] Optionally, for the first power-on of the air conditioning unit, according to the exhaust temperature, the outdoor ambient temperature and the power-off time, it is determined whether the compressor needs to start preheating before starting. In an embodiment, if the exhaust temperature is less than the first preset temperature, the ambient temperature is less than or equal to the second preset temperature, and the power-off time is greater than the preset preheating power-off time, it is determined that the compressor needs to start preheating before starting. The preheating time of the compressor is further calculated, and the specific process is described in steps 301 to 303.

[0065] In an embodiment, the first preset temperature can be 10℃, the second preset temperature can be the open crankshaft ring temperature (default 3℃), and the preset preheating power-off time can be 2 hours. Therefore, when the exhaust temperature is less than 10℃, the ambient temperature is less than or equal to 3℃, and the power-off time is greater than 2 hours, it is determined that the compressor needs to start preheating before starting. If the exhaust temperature is greater than or equal to 10℃, or / and, the ambient temperature is greater than 3℃, or / and, the power-off time is less than or equal to 2 hours, it is determined that preheating is not needed, and the compressor is started directly.

[0066] Step 40, controlling the compressor to preheat based on the preheating time.

[0067] Optionally, the compressor is controlled to preheat according to the calculated preheating time, and the specific process is described in steps 401 to 403.

[0068] It should be noted that for the non-first power-on of the air conditioning unit, when the outdoor ambient temperature of the air conditioning unit is less than the second preset temperature, and the compressor standby time is greater than the non-first power-on crankshaft start-up time, the preheating of the compressor is started, i.e. the crankshaft electric auxiliary heating is started. In an embodiment, the non-first power-on crankshaft start-up time is 30 minutes. When the outdoor ambient temperature of the air conditioning unit is less than the open crankshaft ring temperature (default 3℃), and the compressor standby time is greater than 30 minutes, the preheating of the compressor is started. Further, when the outdoor ambient temperature of the air conditioning unit is greater than or equal to the second preset temperature, or / and, the crankshaft electric auxiliary heating is started for a preset heating time, or / and, after the compressor is started, the heating band is turned off, i.e. the preheating of the compressor is turned off, and the preheating flag is cleared, the compressor stop time count is cleared, and the compressor runs at this time.

[0069] The embodiment of the present application can reasonably calculate the preheating time for the compressor to preheat before the air conditioning unit is started according to the outdoor ambient temperature and the power-off time, so that the oil pool of the compressor can be preheated, thereby gasifying the refrigerant in the oil pool, solving the problems of liquid compression of the compressor and dilution of the oil of the compressor, and avoiding damage to the compressor and the moving parts of the compressor.

[0070] In an optional example, steps 301 to 303 are described as follows:

[0071] In step 301, if the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor environment temperature is less than an open crank ring temperature, and the power-off duration is greater than a preset minimum preheating power-off time of the compressor, a target temperature influence coefficient of the outdoor environment temperature is obtained based on a mapping relationship between a preset temperature influence coefficient and a preset temperature range.

[0072] In step 302, a preset maximum preheating power-off time, a minimum preheating time and a maximum preheating time of the compressor are obtained.

[0073] In step 303, the preheating time is determined based on the target temperature influence coefficient, the power-off duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time and the maximum preheating time.

[0074] Optionally, if the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor environment temperature is less than an open crank ring temperature, and the power-off duration is greater than a preset minimum preheating power-off time of the compressor, it is determined that the compressor needs to start preheating. The minimum preheating power-off time refers to the shortest time required for the equipment or system to be normally working after being powered on again after power-off. In an embodiment, the preset exhaust temperature threshold can be 10°C, the open crank ring temperature is 3°C by default, and the minimum preheating power-off time can be 2 hours. Therefore, when the exhaust temperature satisfies less than 10°C, the environment temperature satisfies less than or equal to 3°C, and the power-off duration is greater than 2 hours, it is determined that the compressor starts preheating. At this time, a target temperature influence coefficient of the outdoor environment temperature is obtained based on a mapping relationship between a preset temperature influence coefficient and a preset temperature range. In an embodiment, the mapping relationship between the preset temperature influence coefficient and the preset temperature range can be: in a preset temperature range [-15°C, 3°C), a preset temperature influence coefficient K is 1; in a preset temperature range [-20°C, -15°C], the preset temperature influence coefficient K is 1.5; in a preset temperature range [-30°C, -20°C), the preset temperature influence coefficient K is 2; and in a preset temperature range < -30°C, the preset temperature influence coefficient K is 3. Therefore, if the outdoor environment temperature is -5°C, the target temperature influence coefficient of the outdoor environment temperature is 1.

[0075] Further, a preset maximum preheating power-off time, a minimum preheating time and a maximum preheating time of the compressor are obtained. The maximum preheating power-off time refers to the longest time required for the equipment or system to be normally working after being powered on again after power-off. The minimum preheating time usually refers to the shortest time required for a certain equipment or system to be started. The maximum preheating time refers to the longest time required for the equipment or system to be started. In an embodiment, the maximum preheating power-off time is 5 hours, the minimum preheating time is 2 hours, and the maximum preheating time is 45 minutes, i.e. 0.9 hours, etc.

[0076] Further, according to the target temperature influence coefficient, the power-off duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time and the maximum preheating time, the preheating time of the compressor is calculated, and the specific process is described in steps 3031 to 3034.

[0077] According to the outdoor environment temperature and the power-off duration, the preheating time is reasonably calculated for the preheating of the compressor in the embodiments of the application, so that the oil pool of the compressor can be preheated, thereby the refrigerant in the oil pool can be gasified, and the problems of liquid compression of the compressor and dilution of the oil of the compressor are solved, and damage of the compressor and damage of the moving parts of the compressor are avoided.

[0078] In an optional example, steps 3031 to 3034 are described as follows:

[0079] In step 3031, the first difference value is obtained by difference calculation based on the power-off duration and the minimum preheating power-off time.

[0080] In step 3032, the second difference value is obtained by difference calculation based on the maximum preheating power-off time and the minimum preheating power-off time.

[0081] In step 3033, the third difference value is obtained by difference calculation based on the maximum preheating time and the minimum preheating time.

[0082] In step 3034, the preheating time is determined based on the target temperature influence coefficient, the first difference value, the second difference value, the third difference value and the maximum preheating time.

[0083] Optionally, the first difference value is obtained by difference calculation based on the power-off duration and the minimum preheating power-off time, and it can be understood that the first difference value = power-off duration - minimum preheating power-off time. Further, the second difference value is obtained by difference calculation based on the maximum preheating power-off time and the minimum preheating power-off time, and it can be understood that the second difference value = maximum preheating power-off time - minimum preheating power-off time. Further, the third difference value is obtained by difference calculation based on the maximum preheating time and the minimum preheating time, and it can be understood that the third difference value = maximum preheating time - minimum preheating time. Further, the preheating time of the compressor is calculated based on the target temperature influence coefficient, the first difference value, the second difference value, the third difference value and the maximum preheating time, and the specific calculation formula is as follows:

[0084]

[0085] Wherein, T is the preheating time, K t is the target temperature influence coefficient, ΔT1 is the first difference value, ΔT2 is the second difference value, ΔT3 is the third difference value, and t is the maximum preheating time.

[0086] It should be noted that during the preheating process, the air conditioning unit cannot be started, but the start command can be memorized, and after the preheating time reaches, the start command is automatically started. If the system is in the preheating state when starting, the normal preheating or fast preheating can be selected according to the prompt. For normal preheating, the preheating time is calculated according to the formula above. For fast preheating, the preheating time is the minimum preheating time.

[0087] The preheating time of the compressor is reasonably calculated according to the outdoor environment temperature and the power-off time in the embodiment of the application, so that the oil pool of the compressor can be preheated, thereby the refrigerant in the oil pool can be gasified, the problems of liquid compression of the compressor and dilution of the oil of the compressor are solved, and damage of the compressor and damage of the moving parts of the compressor are avoided.

[0088] In an optional example, steps 401 to 404 are described as follows:

[0089] Step 401, obtaining an oil temperature of lubricating oil in an oil pool of the compressor when the compressor is preheated;

[0090] Step 402, determining a temperature comparison result between the oil temperature and a preset oil temperature threshold;

[0091] Step 403, determining a preheating strategy of the compressor based on the temperature comparison result;

[0092] Step 404, controlling the compressor to preheat based on the preheating time and the preheating strategy.

[0093] Optionally, in order to make the oil temperature of the lubricating oil in the oil pool of the compressor meet the preset oil temperature requirement when the preheating of the compressor is completed, the oil temperature of the lubricating oil in the oil pool of the compressor at the moment of preheating the compressor is obtained when the compressor is preheated, wherein the oil temperature can be obtained by a temperature sensor.

[0094] Further, the oil temperature and the preset oil temperature threshold are compared in value to determine a temperature comparison result between the oil temperature and the preset oil temperature threshold, wherein the temperature comparison result can be that the oil temperature is greater than the preset oil temperature threshold, or the oil temperature is less than or equal to the preset oil temperature threshold.

[0095] Further, the preheating strategy of the compressor is determined according to the temperature comparison result, and the compressor is preheated by using the preheating strategy for the preheating time.

[0096] The embodiment of the present application determines the preheating strategy of the compressor through the oil temperature, and preheats the compressor through the preheating strategy and the preheating time length, so that the oil temperature of the lubricating oil in the oil pool does not meet the requirements when the compressor is started after the preheating is completed, the compressor is damaged, and the service life of the compressor is improved.

[0097] In an optional example, steps 4041 to 4042 are described as follows:

[0098] In step 4041, if the temperature comparison result is that the oil temperature is less than or equal to the preset oil temperature threshold, the preheating strategy is determined as an external heater preheating strategy; the external heater preheating strategy represents that the external electric heater of the compressor is used to preheat the lubricating oil.

[0099] In step 4042, if the temperature comparison result is that the oil temperature is greater than the preset oil temperature threshold, the preheating strategy is determined based on the power-off time length.

[0100] Optionally, the preheating strategy in the embodiment of the present application can include an external heater preheating strategy, an internal heater preheating strategy, and a circulating loop preheating strategy, wherein the external heater preheating strategy represents that the external electric heater of the compressor is used to preheat the lubricating oil, the internal heater preheating strategy represents that the internal electric heater of the compressor is used to preheat the lubricating oil, and the circulating loop preheating strategy represents that the internal circulating loop of the compressor is used to preheat the lubricating oil.

[0101] Therefore, if it is determined that the temperature comparison result is that the oil temperature is less than or equal to the preset oil temperature threshold, the preheating strategy is determined as the external heater preheating strategy, that is, the electric heater control instruction is generated according to the external heater preheating strategy, and the external heater set by the compressor is started according to the electric heater control instruction to preheat the lubricating oil by using the external heater.

[0102] Further, if it is determined that the temperature comparison result is that the oil temperature is greater than the preset oil temperature threshold, the preheating strategy is determined according to the power-off time length, which is specifically described in steps 40421 to 40424.

[0103] The embodiment of the present application determines the preheating strategy of the compressor through the oil temperature, and preheats the compressor through the preheating strategy and the preheating time length, so that the oil temperature of the lubricating oil in the oil pool does not meet the requirements when the compressor is started after the preheating is completed, the compressor is damaged, and the service life of the compressor is improved.

[0104] In an optional example, steps 40421 to 40424 are described as follows:

[0105] Step 40421, determining a time length comparison result between the power-off time length and a first preset power-off threshold and a second preset power-off threshold; the first preset power-off threshold is greater than the second preset power-off threshold.

[0106] Step 40422, if the time length comparison result is that the power-off time length is greater than the first preset power-off threshold, determining the preheating strategy as the external heater preheating strategy.

[0107] Step 40423, if the time length comparison result is that the power-off time length is greater than or equal to the second preset power-off threshold and less than the first preset power-off threshold, determining the preheating strategy as the internal heater preheating strategy; the internal heater preheating strategy represents preheating the lubricating oil by using an internal electric heater of the compressor.

[0108] Step 40424, if the time length comparison result is that the power-off time length is less than the second preset power-off threshold, determining the preheating strategy as the circulating loop preheating strategy; the circulating loop preheating strategy represents preheating the lubricating oil by using an internal circulating loop of the compressor.

[0109] Optionally, a time length comparison result between the power-off time length and a first preset power-off threshold and a second preset power-off threshold is determined, wherein the first preset power-off threshold is greater than the second preset power-off threshold. Therefore, it can be understood that the time length comparison result can be that the power-off time length is greater than the first preset power-off threshold, can be that the power-off time length is greater than or equal to the second preset power-off threshold and less than the first preset power-off threshold, or can be that the power-off time length is less than the second preset power-off threshold.

[0110] Therefore, if it is determined that the time length comparison result is that the power-off time length is greater than the first preset power-off threshold, it is determined that the preheating strategy is the external heater preheating strategy, that is, an electric heater control instruction is generated according to the external heater preheating strategy, and an internal heater of the compressor is started according to the electric heater control instruction to preheat the lubricating oil by using the internal heater.

[0111] Further, if it is determined that the time length comparison result is that the power-off time length is greater than or equal to the second preset power-off threshold and less than the first preset power-off threshold, it is determined that the preheating strategy is the internal heater preheating strategy, that is, an electric heater control instruction is generated according to the internal heater preheating strategy, and an internal heater of the compressor is started according to the electric heater control instruction to preheat the lubricating oil by using the internal heater.

[0112] Further, if it is determined that the time length comparison result is that the power-off time length is less than the second preset power-off threshold, it is determined that the preheating strategy is the circulating loop preheating strategy, that is, the lubricating oil is delivered to an internal circulating loop of the compressor to preheat the lubricating oil by using the internal circulating loop.

[0113] The embodiment of the present application determines the preheating strategy of the compressor through the oil temperature, and preheats the compressor through the preheating strategy and the preheating time, so that the oil temperature of the lubricating oil in the oil pool of the compressor meets the requirements when the compressor is started after the preheating is completed, and the service life of the compressor is improved.

[0114] In an embodiment, taking the initial power-on of the air conditioning unit as an example, after the air conditioning unit is powered on and a start instruction is sent, the preset exhaust temperature threshold is 10℃, the default crankshaft ring temperature is 3℃, the minimum preheating power-off time is 2 hours, and the preset oil temperature threshold is 20℃.

[0115] The mapping relationship between the pre-temperature influence coefficient and the temperature range can be: in the temperature range [-15℃, 3℃), the temperature influence coefficient K is 1; in the temperature range [-20℃, -15℃], the temperature influence coefficient K is 1.5; in the temperature range [-30℃, -20℃), the temperature influence coefficient K is 2; and in the temperature range <-30℃, the temperature influence coefficient K is 3.

[0116] Therefore, when the exhaust temperature is 8℃, the ambient temperature is -25℃, and the power-off time is 2.5 hours, it is determined that the compressor needs to be preheated, and the temperature influence coefficient K is 2 at this time. Further, the preheating time of the compressor is calculated as T=2*(power-off time-minimum preheating power-off time) / (maximum preheating power-off time-minimum preheating power-off time)*(maximum preheating time-minimum preheating time)+maximum preheating time.

[0117] When the compressor is preheated, the oil temperature of the lubricating oil in the oil pool of the compressor is 15℃, and the compressor is preheated through the preheating time T and the additional heater preheating strategy.

[0118] In an optional example, referring to Figure 2 , Figure 2 FIG. 2 is a flowchart of a compressor preheating control method provided in an embodiment of the present application, and the compressor preheating control method further includes the following steps.

[0119] In step 50, a first output voltage of an output end of the compressor when the compressor is preheated is obtained.

[0120] In step 60, if the first output voltage is higher than a first preset level, the opening time of the compressor is recorded.

[0121] In step 70, if the opening time reaches the preheating time, a second output voltage of the output end of the compressor is obtained.

[0122] In step 80, if the second output voltage is lower than a second preset level, the compressor is started.

[0123] Optionally, the first output voltage of the output end of the compressor is acquired when the compressor is preheated, wherein the output voltage can be acquired by a voltage sensor in the air conditioning unit.

[0124] Further, the first output voltage of the output end of the compressor is subjected to level determination to determine whether the first output voltage is higher than a first preset level. If it is determined that the first output voltage is higher than the first preset level, it is determined that the preheating state of the compressor is normal. If it is determined that the first output voltage is lower than the first preset level, it is determined that the preheating state of the compressor is abnormal. Further, when the first output voltage is lower than the first preset level, the preheating process of the compressor is interrupted, and an alarm is output. When the first output voltage is higher than the first preset level, the opening duration of the compressor is recorded, and it is determined in real time whether the opening duration reaches a preheating duration.

[0125] Further, if it is determined that the opening duration reaches the preheating duration, the second output voltage of the output end of the compressor is acquired, wherein the output voltage can be acquired by a voltage sensor in the air conditioning unit.

[0126] Further, the second output voltage of the output end of the compressor is subjected to level determination to determine whether the second output voltage is lower than a second preset level. If it is determined that the second output voltage is lower than the second preset level, it is determined that the starting state of the compressor is normal. If it is determined that the second output voltage is higher than the second preset level, it is determined that the starting state of the compressor is abnormal. Further, when the second output voltage is higher than the second preset level, the starting process of the compressor is interrupted, and an alarm is output. When the second output voltage is lower than the second preset level, the compressor is controlled to start.

[0127] The preheating state and the starting state of the compressor are determined according to the output voltage of the output end of the compressor in the embodiment of the application, so that the use safety of the compressor is ensured, and damage of the compressor is avoided.

[0128] The compressor preheating control device provided by the embodiment of the application is described below. The compressor preheating control device described below can be correspondingly referred to the compressor preheating control method described above.

[0129] Referring to Figure 3 as shown in the figure, Figure 3 is a structure diagram of the compressor preheating control device provided in the embodiment of the application. The compressor preheating control device can include:

[0130] The first acquisition module 301 is configured to acquire parameter list information of the air conditioning unit after the air conditioning unit is powered on and an opening instruction is issued.

[0131] The second acquisition module 302 is configured to acquire an exhaust temperature of an exhaust port of a compressor in the air conditioning unit, and an outdoor environment temperature and a power-off duration of the air conditioning unit based on the parameter list information.

[0132] The determination module 303 is configured to determine a preheating duration of the compressor based on the exhaust temperature, the outdoor environment temperature and the power-off duration.

[0133] The compressor preheating module 304 is configured to control the compressor to preheat based on the preheating duration.

[0134] The preheating duration of the compressor can be reasonably calculated according to the outdoor environment temperature and the power-off duration before the air conditioning unit is started, so that the oil pool of the compressor can be preheated, the refrigerant in the oil pool can be gasified, the problems of liquid compression of the compressor and dilution of the oil of the compressor are solved, and the damage of the compressor and the damage of the moving parts of the compressor are avoided.

[0135] In an optional example, the determination module 303 is further configured to:

[0136] If the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor environment temperature is less than the open crankshaft ring temperature, and the power-off duration is greater than a preset minimum preheating power-off time of the compressor, a target temperature influence coefficient of the outdoor environment temperature is acquired based on a mapping relationship between a preset temperature influence coefficient and a preset temperature range.

[0137] A preset maximum preheating power-off time, a minimum preheating time and a maximum preheating time of the compressor are acquired.

[0138] The preheating duration is determined based on the target temperature influence coefficient, the power-off duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time and the maximum preheating time.

[0139] In an optional example, the determination module 303 is further configured to:

[0140] A first difference value is obtained by difference calculation based on the power-off duration and the minimum preheating power-off time.

[0141] A second difference value is obtained by difference calculation based on the maximum preheating power-off time and the minimum preheating power-off time.

[0142] A third difference value is obtained by difference calculation based on the maximum preheating time and the minimum preheating time.

[0143] The preheating duration is determined based on the target temperature influence coefficient, the first difference value, the second difference value, the third difference value and the maximum preheating time.

[0144] In an optional example, the compressor preheating module 304 is further configured to:

[0145] acquire an oil temperature of lubricating oil in an oil pool of the compressor when the compressor is preheated;

[0146] determine a temperature comparison result between the oil temperature and a preset oil temperature threshold;

[0147] determine a preheating strategy of the compressor based on the temperature comparison result;

[0148] control the compressor to be preheated based on the preheating duration and the preheating strategy.

[0149] In an optional example, the compressor preheating module 304 is further configured to:

[0150] if the temperature comparison result is that the oil temperature is less than or equal to the preset oil temperature threshold, determine that the preheating strategy is an external heater preheating strategy; the external heater preheating strategy represents that the lubricating oil is preheated by using an external electric heater of the compressor; or,

[0151] if the temperature comparison result is that the oil temperature is greater than the preset oil temperature threshold, determine the preheating strategy based on the power-off duration.

[0152] In an optional example, the compressor preheating module 304 is further configured to:

[0153] determine a duration comparison result between the power-off duration, a first preset power-off threshold and a second preset power-off threshold; the first preset power-off threshold is greater than the second preset power-off threshold;

[0154] if the duration comparison result is that the power-off duration is greater than the first preset power-off threshold, determine that the preheating strategy is the external heater preheating strategy; or,

[0155] if the duration comparison result is that the power-off duration is greater than or equal to the second preset power-off threshold and less than the first preset power-off threshold, determine that the preheating strategy is an internal heater preheating strategy; the internal heater preheating strategy represents that the lubricating oil is preheated by using an internal electric heater of the compressor; or,

[0156] if the duration comparison result is that the power-off duration is less than the second preset power-off threshold, determine that the preheating strategy is a circulating loop preheating strategy; the circulating loop preheating strategy represents that the lubricating oil is preheated by using an internal circulating loop of the compressor.

[0157] In an optional example, the compressor preheating control device is further configured to:

[0158] Obtain the first output voltage at the output terminal of the compressor when the compressor is preheated;

[0159] If the first output voltage is higher than the first preset level, then record the compressor's start-up duration;

[0160] If the opening duration reaches the preheating duration, then the second output voltage at the output terminal of the compressor is obtained;

[0161] If the second output voltage is lower than the second preset level, the compressor is controlled to start.

[0162] The specific embodiments of the compressor preheating control device provided in this application are basically the same as the embodiments of the compressor preheating control method, and will not be described in detail here.

[0163] Optional, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other via the communication bus 440. The processor 410 can call a computer program in the memory 430 to execute the steps of a compressor preheating control method, such as including:

[0164] After the air conditioning unit is powered on and a start command is issued, the parameter list information of the air conditioning unit is obtained;

[0165] Based on the parameter list information, obtain the exhaust temperature of the compressor outlet in the air conditioning unit, the power-off duration of the compressor, and the outdoor ambient temperature of the air conditioning unit;

[0166] The preheating time of the compressor is determined based on the exhaust temperature, the outdoor ambient temperature, and the power outage duration.

[0167] The compressor is controlled to preheat based on the preheating time.

[0168] Further, the logic computer program in the memory 430 described above can be realized in the form of a software function unit and sold or used as an independent product, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the parts that make contributions to the prior art or parts of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of computer programs for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0169] In another aspect, the embodiments of the present application also provide a non-transitory computer readable storage medium, which includes a computer program, the computer program can be stored in the non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer can execute the steps of the compressor preheating control method provided by the above embodiments, for example, including:

[0170] After the air conditioning unit is powered on and an operation instruction is issued, parameter list information of the air conditioning unit is acquired;

[0171] Based on the parameter list information, an exhaust temperature of an exhaust port of a compressor in the air conditioning unit, a power-off duration of the compressor, and an outdoor environment temperature of the air conditioning unit are acquired;

[0172] Based on the exhaust temperature, the outdoor environment temperature, and the power-off duration, a preheating duration of the compressor is determined;

[0173] Based on the preheating duration, the compressor is controlled to preheat.

[0174] In another aspect, the embodiments of the present application also provide a computer product, which includes a computer program, the computer program can be stored in the computer product, and when the computer program is executed by a processor, the computer can execute the steps of the compressor preheating control method provided by the above embodiments, for example, including:

[0175] After the air conditioning unit is powered on and an operation instruction is issued, parameter list information of the air conditioning unit is acquired;

[0176] Based on the parameter list information, an exhaust temperature of an exhaust port of a compressor in the air conditioning unit, a power-off duration of the compressor, and an outdoor environment temperature of the air conditioning unit are acquired;

[0177] determine a preheating duration of the compressor based on the exhaust temperature, the outdoor ambient temperature and the power-off duration;

[0178] control the compressor to preheat based on the preheating duration.

[0179] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0180] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of computer programs for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0181] 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 skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part 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 the embodiments of the present application.

Claims

1. A compressor preheating control method, characterized in that, include: After the air conditioning unit is powered on and a start command is issued, the parameter list information of the air conditioning unit is obtained; Based on the parameter list information, obtain the exhaust temperature of the compressor outlet in the air conditioning unit, the power-off duration of the compressor, and the outdoor ambient temperature of the air conditioning unit; Based on the exhaust temperature, the outdoor ambient temperature, and the power outage duration, the preheating time of the compressor is determined; specifically, this includes: if the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor ambient temperature is less than the crankshaft ambient temperature, and the power outage duration is greater than the preset minimum preheating power-off time of the compressor, then based on the mapping relationship between a preset temperature influence coefficient and a preset temperature range, a target temperature influence coefficient for the outdoor ambient temperature is obtained; the preset maximum preheating power-off time, minimum preheating time, and maximum preheating time of the compressor are obtained; based on the target temperature influence coefficient, the power outage duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time, and the maximum preheating time, the preheating time is determined; The compressor is controlled to preheat based on the preheating time.

2. The compressor preheating control method according to claim 1, characterized in that, The determination of the preheating duration based on the target temperature influence coefficient, the power outage duration, the minimum preheating power outage time, the maximum preheating power outage time, the minimum preheating time, and the maximum preheating time includes: The first difference is obtained by calculating the difference between the power outage duration and the minimum preheating power outage time. The second difference is calculated based on the difference between the maximum preheating power-off time and the minimum preheating power-off time. A third difference is obtained by calculating the difference between the maximum preheating time and the minimum preheating time. The preheating duration is determined based on the target temperature influence coefficient, the first difference, the second difference, the third difference, and the maximum preheating time.

3. The compressor preheating control method according to claim 1, characterized in that, The step of controlling the compressor to preheat based on the preheating duration includes: The temperature of the lubricating oil in the oil sump of the compressor is obtained when the compressor is preheated. Determine the temperature comparison result between the oil temperature and the preset oil temperature threshold; The preheating strategy for the compressor is determined based on the temperature comparison results; The compressor is controlled to preheat based on the preheating time and the preheating strategy.

4. The compressor preheating control method according to claim 3, characterized in that, The step of determining the preheating strategy for the compressor based on the temperature comparison result includes: If the temperature comparison result is that the oil temperature is less than or equal to the preset oil temperature threshold, then the preheating strategy is determined to be an external heater preheating strategy; the external heater preheating strategy represents using the external electric heater of the compressor to preheat the lubricating oil; or, If the temperature comparison result is that the oil temperature is greater than the preset oil temperature threshold, then the preheating strategy is determined based on the power outage duration.

5. The compressor preheating control method according to claim 4, characterized in that, Determining the preheating strategy based on the power outage duration includes: The duration of the power outage is determined, and a comparison result between the duration and a first preset power outage threshold and a second preset power outage threshold is obtained; the first preset power outage threshold is greater than the second preset power outage threshold. If the duration comparison result is that the power outage duration is greater than the first preset power outage threshold, then the preheating strategy is determined to be the external heater preheating strategy; or, If the duration comparison result is: the power outage duration is greater than or equal to the second preset power outage threshold and less than the first preset power outage threshold, then the preheating strategy is determined to be an internal heater preheating strategy; the internal heater preheating strategy represents using the compressor's internal electric heater to preheat the lubricating oil; or, If the duration comparison result is that the power outage duration is less than the second preset power outage threshold, then the preheating strategy is determined to be a circulating loop preheating strategy; the circulating loop preheating strategy indicates that the lubricating oil is preheated using the internal circulating loop of the compressor.

6. The compressor preheating control method according to any one of claims 1 to 5, characterized in that, The compressor preheating control method further includes: Obtain the first output voltage at the output terminal of the compressor when the compressor is preheated; If the first output voltage is higher than the first preset level, then record the compressor's start-up duration; If the opening duration reaches the preheating duration, then the second output voltage at the output terminal of the compressor is obtained; If the second output voltage is lower than the second preset level, the compressor is controlled to start.

7. A compressor preheating control device, characterized in that, include: The first acquisition module is used to acquire the parameter list information of the air conditioning unit after the air conditioning unit is powered on and a start command is issued; The second acquisition module is used to acquire the exhaust temperature of the compressor outlet in the air conditioning unit, the outdoor ambient temperature of the air conditioning unit, and the power outage duration based on the parameter list information. The determination module is used to determine the preheating time of the compressor based on the exhaust temperature, the outdoor ambient temperature, and the power outage duration. Specifically, it includes: if the exhaust temperature is less than or equal to a preset exhaust temperature threshold, the outdoor ambient temperature is less than the crankshaft ambient temperature, and the power outage duration is greater than the preset minimum preheating power-off time of the compressor, then based on the mapping relationship between a preset temperature influence coefficient and a preset temperature range, it obtains a target temperature influence coefficient for the outdoor ambient temperature; it obtains the preset maximum preheating power-off time, minimum preheating time, and maximum preheating time of the compressor; and based on the target temperature influence coefficient, the power outage duration, the minimum preheating power-off time, the maximum preheating power-off time, the minimum preheating time, and the maximum preheating time, it determines the preheating time. A compressor preheating module is used to control the compressor to preheat based on the preheating duration.

8. An electronic device, characterized in that, The system includes a processor and a memory, the memory storing multiple computer programs; the processor loads the computer programs from the memory to execute the compressor preheating control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a plurality of computer programs adapted for loading by a processor to execute the compressor preheating control method as described in any one of claims 1 to 6.

Images