Low-temperature starting method and operation control device of air conditioner and air conditioner

Abstract

The invention discloses a low-temperature starting method of an air conditioner, and relates to the technical field of air conditioners, the air conditioner comprises a compressor, an auxiliary electric heater for heating the compressor, a main control board arranged in an electric control box, and a refrigerant heat exchange pipeline for exchanging heat for the main control board, the method comprises the steps that when the air conditioner is powered on and receives a starting control signal, the temperature of the environment where the air conditioner is located is obtained; when the environment temperature is larger than the first preset temperature and smaller than the second preset temperature, the compressor and the auxiliary electric heater are controlled, so that the internal temperature of the electric control box is larger than the second preset temperature, the first preset temperature is smaller than the second preset temperature, and the auxiliary electric heater can be started under the condition that the temperature is lower than the second preset temperature; and when the internal temperature of the electric control box is larger than the second preset temperature, operation is started according to the received target set function signal, and the air conditioner can be normally started at the low temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular, to a low-temperature startup method, an operation control device, an air conditioner, and a computer-readable storage medium for an air conditioner. Background Art

[0002] Currently, in the field of household air conditioner products, the minimum startup temperature and the operating temperature of a large number of existing household air conditioner products are both labeled as -25°C. Moreover, for some components in such air conditioner products, the minimum operating temperature can only be above -25°C. For example, the fan module, electrolytic capacitors, etc. When it is required to use such air conditioner products in a scenario with a lower ambient temperature, since the ambient temperature is lower than the minimum startup temperature of the air conditioner, when the user wants to start the air conditioner, the air conditioner cannot be turned on, which brings great inconvenience and a poor user experience to the user. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a low-temperature startup method, an operation control device, an air conditioner, and a computer-readable storage medium for an air conditioner, which can normally turn on the air conditioner at a lower temperature.

[0004] In a first aspect, an embodiment of the present invention provides a low-temperature startup method for an air conditioner. The air conditioner includes a compressor, an auxiliary electric heater for heating the compressor, a main control board disposed inside an electric control box, and a refrigerant heat exchange pipe for heat exchange of the main control board. The method includes:

[0005] When the air conditioner is powered on and receives a startup control signal, obtain the ambient temperature of the air conditioner;

[0006] When the ambient temperature is greater than a first preset temperature and less than a second preset temperature, control the compressor and the auxiliary electric heater so that the internal temperature of the electric control box is greater than the second preset temperature. The first preset temperature is less than the second preset temperature, and the auxiliary electric heater can be turned on when the temperature is lower than the second preset temperature;

[0007] When the internal temperature of the electric control box is greater than the second preset temperature, start running according to the received target set function signal.

[0008] The low-temperature startup method of the air conditioner provided by the embodiments of the present invention has at least the following beneficial effects: When the air conditioner is used in a scenario with a relatively low ambient temperature, after the air conditioner is powered on and receives a startup control signal, since the air conditioner is just powered on and the ambient temperature is low, the internal temperature of the electronic control box may be lower than its minimum startup temperature, i.e., the second preset temperature, and at this time, the air conditioner cannot be started normally; Therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner, and take corresponding measures after detecting that the ambient temperature is lower than the second preset temperature. Further, by setting an auxiliary electric heater that can be turned on when the temperature is lower than the second preset temperature, when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the auxiliary electric heater can be controlled to heat the compressor, and then the compressor can be controlled to start and run, so as to heat the main control board through the refrigerant heat exchange pipeline, so that the internal temperature of the electronic control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0009] According to the low-temperature startup method provided by some embodiments of the present invention, controlling the compressor and the auxiliary electric heater so that the internal temperature of the electronic control box is greater than the second preset temperature includes:

[0010] Control the auxiliary electric heater to turn on;

[0011] When the exhaust temperature of the compressor is greater than the second preset temperature, control the compressor to start and run at the lowest operating frequency.

[0012] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor is started, adjust the operating frequency of the compressor according to the exhaust temperature of the compressor.

[0013] According to the low-temperature startup method provided by some embodiments of the present invention, when the exhaust temperature of the compressor is lower than the third preset temperature, increase the operating frequency of the compressor.

[0014] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor is started, adjust the refrigerant opening degree of the refrigerant heat exchange pipeline according to the internal temperature of the electronic control box.

[0015] According to the low-temperature startup method provided by some embodiments of the present invention, the greater the difference between the internal temperature of the electronic control box and the second preset temperature, the greater the refrigerant opening degree of the refrigerant heat exchange pipeline.

[0016] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor is started, control the auxiliary electric heater to stop running.

[0017] According to the low-temperature startup method provided by some embodiments of the present invention, the internal temperature of the electronic control box is measured by any one of the following:

[0018] The temperature measurement module of the main control board;

[0019] The first sensor disposed inside the electric control box;

[0020] The second sensor disposed in the refrigerant heat exchange pipeline.

[0021] In a second aspect, an embodiment of the present invention provides an operation control device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the program to implement the low-temperature startup method according to any one of the first aspects.

[0022] According to the operation control device provided by the embodiment of the present invention, it has at least the following beneficial effects: When the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives a startup control signal. Since the air conditioner is just powered on and the ambient temperature is low, the internal temperature of the electric control box may be lower than its minimum startup temperature, i.e., the second preset temperature, and at this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner, and take corresponding measures after detecting that the ambient temperature is lower than the second preset temperature. Further, by setting an auxiliary electric heater that can be turned on when the temperature is lower than the second preset temperature, the auxiliary electric heater can be controlled to heat the compressor when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, and then the compressor can be controlled to start running, so as to heat the main control board through the refrigerant heat exchange pipeline, so that the internal temperature of the electric control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0023] In a third aspect, an embodiment of the present invention provides an air conditioner, including the operation control device described in the second aspect.

[0024] According to the air conditioner provided by the embodiment of the present invention, it has at least the following beneficial effects: When the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives a startup control signal. Since the air conditioner is just powered on and the ambient temperature is low, the internal temperature of the electric control box may be lower than its minimum startup temperature, i.e., the second preset temperature, and at this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner, and take corresponding measures after detecting that the ambient temperature is lower than the second preset temperature. Further, by setting an auxiliary electric heater that can be turned on when the temperature is lower than the second preset temperature, the auxiliary electric heater can be controlled to heat the compressor when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, and then the compressor can be controlled to start running, so as to heat the main control board through the refrigerant heat exchange pipeline, so that the internal temperature of the electric control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0025] Fourth aspect, a computer-readable storage medium provided by an embodiment of the present invention, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the low-temperature startup method of an air conditioner as described in the first aspect.

[0026] The computer-readable storage medium provided by the embodiment of the present invention has at least the following beneficial effects: When the air conditioner is used in a scene with a relatively low ambient temperature, the air conditioner is powered on and receives a startup control signal. Since the air conditioner is just powered on and the ambient temperature is relatively low, the internal temperature of the electronic control box may be lower than its minimum startup temperature, that is, the second preset temperature. At this time, the air conditioner cannot be started normally; therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner. After detecting that the ambient temperature is lower than the second preset temperature, corresponding measures are taken. Further, by setting an auxiliary electric heater that can be turned on when the temperature is lower than the second preset temperature, the auxiliary electric heater can be controlled to heat the compressor when the ambient temperature is greater than the first preset temperature and less than the second preset temperature. Furthermore, the startup operation of the compressor can be controlled, so as to heat the main control board through the refrigerant heat exchange pipeline, so that the internal temperature of the electronic control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0027] Other features and advantages of the present invention will be described in the following description, and, in part, will be obvious from the description, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the description, claims, and drawings. Description of the Drawings

[0028] The drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the description. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation to the technical solutions of the present invention.

[0029] The present invention will be further described below in conjunction with the drawings and embodiments;

[0030] Figure 1 is a schematic structural diagram of an air conditioner provided by an embodiment of the present invention;

[0031] Figure 2 is a flowchart of a low-temperature startup method of an air conditioner provided by an embodiment of the present invention;

[0032] Figure 3 is a flowchart of another low-temperature startup method of an air conditioner provided by an embodiment of the present invention;

[0033] Figure 4 is a flowchart of another low-temperature startup method of an air conditioner provided by an embodiment of the present invention;

[0034] Figure 5 This is a schematic structural diagram of the operation control device provided by an embodiment of the present invention.

[0035] Reference numerals: compressor - 1; exhaust port - 1.1; auxiliary electric heater - 2; main control board - 3; fan module - 3.1; compressor drive module - 3.2; refrigerant heat exchange pipeline - 4; turning position - 4.1; ambient temperature detection point - 5; operation control device - 500; processor - 510; memory - 520. Detailed implementation manners

[0036] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0037] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0039] Currently, in the field of household air - conditioner products, the minimum start - up temperature and operating temperature of a large number of existing household air - conditioner products are both labeled as - 25°C. And for some components in such air - conditioner products, the minimum operating temperature can only be above - 25°C, such as the fan module, electrolytic capacitors, etc. When it is required to use such air - conditioner products in a scenario with a lower ambient temperature, since the ambient temperature is lower than the minimum start - up temperature of the air conditioner, when the user wants to start the air conditioner, the air conditioner cannot be turned on, bringing great inconvenience and a bad user experience to the user.

[0040] Based on this, the embodiments of the present invention provide a low - temperature start - up method, an operation control device, an air conditioner, and a computer - readable storage medium for an air conditioner, which can normally turn on the air conditioner at a lower temperature and execute the target setting function, improving the user experience.

[0041] The following will further elaborate on the embodiments of the present invention with reference to the accompanying drawings.

[0042] Refer to Figure 1 , Figure 1It is a schematic structural diagram of an air conditioner provided by an embodiment of the present invention. The air conditioner includes a compressor 1, an auxiliary electric heater 2 for heating the compressor 1, a main control board 3 disposed inside an electric control box, a refrigerant heat exchange pipe 4 for heat exchange of the main control board 3, and an ambient temperature detection point 5. Among them, the main control board 3 includes a fan module 3.1 and a compressor drive module 3.2. The compressor 1 is located at the bottom of the air conditioner, and the auxiliary electric heater 2 is installed on the outer shell of the compressor 1. When the main control board 3 is installed in the whole machine, the main control board 3 is located above the compressor 1.

[0043] In a first aspect, an embodiment of the present invention provides a low-temperature startup method for an air conditioner. Refer to Figure 2 , Figure 2 It is a flowchart of the low-temperature startup method for the air conditioner provided by the embodiment of the present invention. The method includes but is not limited to steps S110 to S130:

[0044] Step S110: When the air conditioner is powered on and receives a startup control signal, obtain the ambient temperature of the air conditioner.

[0045] It should be noted that when the air conditioner is used in a scenario with a relatively low ambient temperature, after the air conditioner is powered on and receives a startup control signal, since the air conditioner is in a standby state before being powered on, the temperature inside the electric control box is gradually pulled down by the ambient temperature until it approaches the ambient temperature. If the ambient temperature is lower than the second preset temperature, the temperature inside the electric control box will also be lower than its minimum startup temperature, that is, the second preset temperature. At this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner, and corresponding measures can be taken in time after detecting that the ambient temperature is lower than the second preset temperature to solve the problem that the air conditioner cannot be started. Preferably, the ambient temperature detection point 5 is set at the air intake position on the rear side of the air conditioner body.

[0046] Step S120: When the ambient temperature is greater than the first preset temperature and less than the second preset temperature, control the compressor 1 and the auxiliary electric heater 2 so that the internal temperature of the electric control box is greater than the second preset temperature.

[0047] Among them, the first preset temperature is less than the second preset temperature, and the auxiliary electric heater 2 can be turned on when the temperature is lower than the second preset temperature.

[0048] Preferably, the first preset temperature is -40°C, and the first preset temperature can be appropriately adjusted within the range of -40°C to -30°C.

[0049] Preferably, the second preset temperature is -25°C, and the second preset temperature can be appropriately adjusted within the range of -25°C to -20°C.

[0050] It should be noted that when the detected ambient temperature is greater than -40°C and less than -25°C, the temperature inside the electronic control box is generally lower than its minimum startup temperature, i.e., the second preset temperature. At this time, the air conditioner cannot be started normally. It is necessary to control the compressor 1 and the auxiliary electric heater 2 so that the internal temperature of the electronic control box is greater than the second preset temperature, enabling the air conditioner to start normally.

[0051] Step S130: When the internal temperature of the electronic control box is greater than the second preset temperature, start running according to the received target setting function signal.

[0052] It can be understood that when the internal temperature of the electronic control box is higher than the second preset temperature, i.e., -25°C, the internal temperature of the electronic control box is higher than its minimum startup temperature. After the air conditioner is powered on and receives the startup control signal, it can start normally and start running according to the received target setting function signal.

[0053] It can be understood that the target setting function signal can be signals such as heating function, dehumidification function, air purification function, etc. It should be noted that the target setting function signal can be received together with the power-on received startup control signal in step S110, or can be received again after the internal temperature of the electronic control box is greater than the second preset temperature.

[0054] According to the low-temperature startup method of the air conditioner provided by the embodiments of the present invention, when the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives the startup control signal. Since the air conditioner is just powered on and the ambient temperature is low, the internal temperature of the electronic control box may be lower than its minimum startup temperature, i.e., the second preset temperature. At this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives the startup control signal, it is necessary to obtain the ambient temperature of the air conditioner. After detecting that the ambient temperature is lower than the second preset temperature, corresponding measures are taken. Further, by setting the auxiliary electric heater 2 that can be turned on when the temperature is lower than the second preset temperature, the auxiliary electric heater 2 can be controlled to heat the compressor 1 when the ambient temperature is greater than the first preset temperature and less than the second preset temperature. Furthermore, the compressor 1 can be controlled to start running, so as to heat the main control board 3 through the refrigerant heat exchange pipeline 4, so that the internal temperature of the electronic control box is raised above the second preset temperature, enabling the air conditioner to start normally.

[0055] According to the low-temperature startup method provided by some embodiments of the present invention, control the compressor 1 and the auxiliary electric heater 2 so that the internal temperature of the electronic control box is greater than the second preset temperature. Refer to Figure 3 , including but not limited to steps S210 - S220:

[0056] Step S210: Control the auxiliary electric heater 2 to turn on;

[0057] Preferably, the second preset temperature is -25°C. When the ambient temperature is lower than -25°C, it is lower than the minimum startup temperature of some components on the main control board 3. When the air conditioner needs to be used, it cannot be turned on normally, and measures need to be taken in time to raise the temperature inside the electric control box above the second preset temperature.

[0058] It should be noted that the auxiliary electric heater 2 is wound around the body of the compressor 1. When the auxiliary electric heater 2 is started to work, it can quickly generate enough heat, and can quickly increase the internal temperature of the compressor 1 by means of the heat transferred by the auxiliary electric heater 2.

[0059] It should be noted that at a relatively low temperature, the lubricating oil of the compressor 1 may become viscous, resulting in the compressor 1 being stuck or damaged.

[0060] After the internal temperature of the compressor 1 is increased by first turning on the auxiliary electric heater 2 and then controlling the compressor 1 to start, it is beneficial to reduce the viscosity of the lubricating oil inside the compressor 1, avoid damage to the compressor 1 after it is turned on, improve the energy efficiency of the compressor 1, and accelerate the startup of the compressor 1.

[0061] Step S220: When the exhaust temperature of the compressor 1 is greater than the second preset temperature, control the compressor 1 to start running at the lowest operating frequency.

[0062] It should be noted that a temperature sensor is provided at the exhaust port 1.1 of the compressor 1 to detect the temperature at the exhaust port 1.1 of the compressor 1. When it is detected that the exhaust temperature of the compressor 1 is greater than the second preset temperature, preferably, the second preset temperature is 25°C, that is, after it is detected that the exhaust temperature of the compressor 1 is greater than 25°C, the compressor drive module 3.2 on the main control board 3 is controlled to drive the compressor 1 to start running at the lowest operating frequency.

[0063] It should be noted that the lowest operating temperature of the compressor drive module 3.2 on the main control board 3 can be as low as -40°C. Preferably, the first preset temperature is -40°C. When the ambient temperature is greater than the first preset temperature and less than the second preset temperature, that is, greater than -40°C and less than -25°C, the compressor drive module 3.2 can drive the compressor 1 to work.

[0064] Furthermore, after the exhaust temperature of the compressor 1 is made greater than the second preset temperature by turning on the auxiliary electric heater 2, and then controlling the compressor 1 to start at the lowest operating frequency through the compressor drive module 3.2, it is beneficial to reduce the viscosity of the lubricating oil inside the compressor 1, avoid damage to the compressor 1 after it is turned on, improve the energy efficiency of the compressor 1, and accelerate the startup speed of the compressor.

[0065] For example, the operating frequency of the compressor 1 is made to be 25 Hz. The minimum frequencies of compressors 1 of different models are different.

[0066] It can be understood that in a low-temperature scenario, if the control compressor 1 operates at a high frequency, since the lubricating oil of the compressor 1 is still relatively viscous, it may cause wear of the internal parts of the compressor 1, thereby shortening the service life of the compressor 1. Additionally, at a lower temperature, the compressor 1 has to bear a greater load to maintain the operation of the air conditioner. If it operates at a high frequency, it may cause the compressor 1 to be overloaded, thereby damaging the compressor 1.

[0067] It can be understood that in an environment with a lower temperature, after the exhaust temperature of the compressor 1 is greater than the second preset temperature, controlling the compressor 1 to start and operate at the lowest operating frequency can better protect the safety of the compressor 1 itself and the stable operation of the air conditioner.

[0068] Furthermore, since the electronic control box is placed above the exhaust port 1.1 of the compressor 1, the exhaust port 1.1 of the compressor 1 will transfer heat upward into the interior of the electronic control box, causing the temperature inside the electronic control box to rise above the second preset temperature.

[0069] It can be understood that by controlling the activation of the auxiliary electric heater 2 and the compressor 1, in a scenario where the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the temperature inside the electronic control box can be quickly increased to above the second preset temperature, thereby enabling the normal startup of the air conditioner.

[0070] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor 1 is started, the operating frequency of the compressor 1 is adjusted according to the exhaust temperature of the compressor 1.

[0071] It can be understood that as the compressor 1 starts, the internal temperature of the compressor 1 rises, and the lubricating oil tends to be in a normal liquid state, and it can gradually adapt to higher-frequency operation.

[0072] According to the low-temperature startup method provided by some embodiments of the present invention, when the exhaust temperature of the compressor 1 is lower than the third preset temperature, the operating frequency of the compressor 1 is increased.

[0073] Preferably, the third preset temperature is 50 °C, and the third preset temperature can be moderately adjusted within the range of 40 °C to 60 °C.

[0074] It should be noted that although the heat output from the exhaust port 1.1 of the compressor 1 can increase the internal temperature of the electronic control box, if the ambient temperature continues to drop, it may cause the internal temperature of the electronic control box to be pulled down, making it difficult for the internal temperature of the electronic control box to rise above the second preset temperature. At this time, the temperature of the exhaust port 1.1 needs to be quickly increased to the third preset temperature to better ensure that the internal temperature of the electronic control box quickly rises above the second preset temperature, that is, above 25 °C.

[0075] It can be understood that by increasing the operating frequency of the compressor 1, the exhaust temperature of the compressor 1 can be quickly increased. When it is detected that the exhaust temperature of the compressor 1 is lower than the third preset temperature, i.e., lower than 50°C, it is necessary to increase the operating frequency of the compressor 1.

[0076] Preferably, the operating frequency of the compressor 1 can be increased to 30 Hz.

[0077] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor 1 is started, the refrigerant opening degree of the refrigerant heat exchange pipe 4 is adjusted according to the internal temperature of the electronic control box.

[0078] Refer to Figure 1 , the fan module 3.1 is located above the compressor 1, and the fan module 3.1 shares the same refrigerant heat exchange pipe 4 with the compressor 1.

[0079] It should be noted that with the startup of the compressor 1, the exhaust temperature of the compressor 1 further rises rapidly, and the heat is transferred to the inside of the refrigerant heat exchange pipe 4, and this part of the heat is further transferred to the inside of the electronic control box along the refrigerant heat exchange pipe 4.

[0080] It can be understood that by adjusting the refrigerant opening degree of the refrigerant heat exchange pipe 4, more heat can be transferred to the inside of the electronic control box, and the internal temperature of the electronic control box can be quickly increased to above the second preset temperature.

[0081] According to the low-temperature startup method provided by some embodiments of the present invention, the greater the difference between the internal temperature of the electronic control box and the second preset temperature, the greater the refrigerant opening degree of the refrigerant heat exchange pipe 4.

[0082] It can be understood that when the internal temperature of the electronic control box is lower than the second preset temperature, by increasing the refrigerant opening degree of the refrigerant heat exchange pipe 4, more heat can be transferred from the refrigerant pipe to the inside of the electronic control box, the internal temperature of the electronic control box can be quickly increased, and the difference from the second preset temperature can be quickly reduced.

[0083] According to the low-temperature startup method provided by some embodiments of the present invention, after the compressor 1 is started, the auxiliary electric heater 2 is controlled to stop operating.

[0084] It can be understood that after the compressor 1 starts for a period of time, the temperature inside the compressor 1 can be quickly increased, so that the temperature inside the compressor 1 can be maintained higher than the second preset temperature and keep normal operation. At this time, the auxiliary electric heater 2 can be turned off to save energy consumption.

[0085] According to the low-temperature startup method provided by some embodiments of the present invention, the internal temperature of the electronic control box is measured by any one of the following:

[0086] The temperature measurement module of the main control board 3;

[0087] A first sensor disposed inside the electric control box;

[0088] A second sensor is arranged in the refrigerant heat exchange pipe 4.

[0089] It should be noted that the second sensor arranged in the refrigerant heat exchange pipe 4 may be located at the turning position 4.1 of the refrigerant heat exchange pipe 4 close to the electric control board in the electric control box.

[0090] In order to more clearly explain the low-temperature starting method of the air conditioner of the present invention, a specific embodiment is comprehensively and detailedly introduced below.

[0091] Reference Figure 4 , Figure 4 The present invention is a flowchart of another low-temperature starting method of an air conditioner provided by an embodiment of the present invention.

[0092] Step S310: when the air conditioner is powered on and receives a start control signal, the ambient temperature of the air conditioner is obtained;

[0093] Step S320: determining whether the ambient temperature is less than a first preset temperature; illustratively, the first preset temperature is set to -40°C;

[0094] Step S330: When the ambient temperature is lower than the first preset temperature, the air conditioner stops running;

[0095] Step S340: when the ambient temperature is not less than the first preset temperature, determine whether the ambient temperature is less than the second preset temperature; illustratively, the first preset temperature is set to -25°C;

[0096] It should be noted that when the ambient temperature is greater than the second preset temperature, step S370 is executed.

[0097] Step S351: when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the auxiliary electric heater 2 is controlled to turn on;

[0098] Step S352: When the exhaust temperature of the compressor 1 is greater than the second preset temperature, the compressor 1 is controlled to start running at the lowest operating frequency.

[0099] It should be noted that after the compressor 1 is turned on, the auxiliary electric heater 2 is controlled to stop running.

[0100] Step S353: determining whether the exhaust temperature is less than a third preset temperature; illustratively, the first preset temperature is set to 50° C.;

[0101] Step S354: when the exhaust temperature of the compressor 1 is lower than the third preset temperature, the operating frequency of the compressor 1 is increased.

[0102] Step S355: After the compressor 1 is turned on, adjust the refrigerant opening degree of the refrigerant heat exchange pipeline 4 according to the internal temperature of the electronic control box.

[0103] Step S360: When the internal temperature of the electronic control box is greater than the second preset temperature and remains for the first preset duration, execute Step S370.

[0104] Preferably, the first preset duration is 30 seconds, and the first preset duration can be moderately adjusted within 30 seconds to 2 minutes. In this application, the first preset duration is not overly limited.

[0105] Step S370: Start running according to the received target setting function signal.

[0106] In addition, referring to Figure 5 , Figure 5 is a schematic structural diagram of the operation control device 400 provided by an embodiment of the present invention. An embodiment of the second aspect of the present invention provides an operation control device 400, including a memory 420, a processor 410, and a computer program stored on the memory 420 and operable on the processor 410. The processor 410 executes the program to implement the low-temperature startup method as described in any item of the first aspect. For example, execute Figure 2 the method steps S110 to S130 in Figure 3 the method steps S210 to S220 in Figure 4 the method steps S310 to S370 in

[0107] According to the operation control device 400 provided by the embodiment of the present invention, when the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives a startup control signal. Since the air conditioner is just powered on and the ambient temperature is low, the internal temperature of the electronic control box may be lower than its minimum startup temperature, that is, the second preset temperature, and at this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives a startup control signal, it is necessary to obtain the ambient temperature of the air conditioner. After detecting that the ambient temperature is lower than the second preset temperature, corresponding measures are taken. Further, by setting an auxiliary electric heater 2 that can be turned on when the temperature is lower than the second preset temperature, when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the auxiliary electric heater 2 can be controlled to heat the compressor 1, and then the compressor 1 can be controlled to start running, so as to heat the main control board 3 through the refrigerant heat exchange pipeline 4, so that the internal temperature of the electronic control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0108] In the third aspect, an embodiment of the present invention provides an air conditioner, including the operation control device 400 of the second aspect.

[0109] According to the air conditioner provided by the embodiments of the present invention, when the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives a start control signal. Since the air conditioner has just been powered on and the ambient temperature is low, the internal temperature of the electronic control box may be lower than its minimum start temperature, i.e., the second preset temperature. At this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives the start control signal, it is necessary to obtain the ambient temperature of the air conditioner, and take corresponding measures after detecting that the ambient temperature is lower than the second preset temperature. Further, by setting an auxiliary electric heater 2 that can be turned on when the temperature is lower than the second preset temperature, when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the auxiliary electric heater 2 can be controlled to heat the compressor 1, and then the compressor 1 can be controlled to start running, so as to heat the main control board 3 through the refrigerant heat exchange pipeline 4, so that the internal temperature of the electronic control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0110] Fourthly, the computer-readable storage medium provided by the embodiments of the present invention stores computer-executable instructions for causing a computer to execute the low-temperature start method of the air conditioner as described in the first aspect, for example, to execute Figure 2 the method steps S110 to step S130 in Figure 3 the method steps S210 to step S220 in Figure 4 the method steps S310 to step S370 in

[0111] According to the computer-readable storage medium provided by the embodiments of the present invention, when the air conditioner is used in a scenario with a relatively low ambient temperature, the air conditioner is powered on and receives a start control signal. Since the air conditioner has just been powered on and the ambient temperature is low, the internal temperature of the electronic control box may be lower than its minimum start temperature, i.e., the second preset temperature. At this time, the air conditioner cannot be started normally. Therefore, after the air conditioner is powered on and receives the start control signal, it is necessary to obtain the ambient temperature of the air conditioner, and take corresponding measures after detecting that the ambient temperature is lower than the second preset temperature. Further, by setting an auxiliary electric heater 2 that can be turned on when the temperature is lower than the second preset temperature, when the ambient temperature is greater than the first preset temperature and less than the second preset temperature, the auxiliary electric heater 2 can be controlled to heat the compressor 1, and then the compressor 1 can be controlled to start running, so as to heat the main control board 3 through the refrigerant heat exchange pipeline 4, so that the internal temperature of the electronic control box is raised above the second preset temperature, so that the air conditioner can be started normally.

[0112] Those of ordinary skill in the art will appreciate that all or some of the steps and systems disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include a computer storage medium or a non-transitory medium and a communication medium or a transitory medium. As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules, or other data. Computer storage media includes but is not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0113] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A low-temperature starting method for an air conditioner, characterized in that, the air conditioner includes a compressor, an auxiliary electric heater for heating the compressor, a main control board arranged inside an electric control box, and a refrigerant heat exchange pipeline for heat exchange of the main control board, and the method includes: when the air conditioner is powered on and receives a start control signal, obtaining the ambient temperature where the air conditioner is located; when the ambient temperature is greater than a first preset temperature and less than a second preset temperature, controlling the compressor and the auxiliary electric heater so that the internal temperature of the electric control box is greater than the second preset temperature, the first preset temperature is less than the second preset temperature, and the auxiliary electric heater can be turned on when the temperature is lower than the second preset temperature; when the internal temperature of the electric control box is greater than the second preset temperature, starting and operating according to the received target setting function signal.

2. The low-temperature starting method according to claim 1, characterized in that, the controlling the compressor and the auxiliary electric heater so that the internal temperature of the electric control box is greater than the second preset temperature includes: controlling the auxiliary electric heater to turn on; when the exhaust temperature of the compressor is greater than the second preset temperature, controlling the compressor to start and operate at the lowest operating frequency.

3. The low-temperature starting method according to claim 2, characterized in that, after the compressor is turned on, adjusting the operating frequency of the compressor according to the exhaust temperature of the compressor.

4. The low-temperature starting method according to claim 3, characterized in that, when the exhaust temperature of the compressor is lower than a third preset temperature, increasing the operating frequency of the compressor.

5. The low-temperature starting method according to claim 2, characterized in that, after the compressor is turned on, adjusting the refrigerant opening degree of the refrigerant heat exchange pipeline according to the internal temperature of the electric control box.

6. The low-temperature starting method according to claim 5, characterized in that, the greater the difference between the internal temperature of the electric control box and the second preset temperature, the greater the refrigerant opening degree of the refrigerant heat exchange pipeline.

7. The low-temperature starting method according to claim 2, characterized in that, after the compressor is turned on, controlling the auxiliary electric heater to stop operating.

8. The low-temperature starting method according to claim 1, characterized in that, the internal temperature of the electric control box is measured by any one of the following: a temperature measurement module of the main control board; a first sensor arranged inside the electric control box; a second sensor arranged in the refrigerant heat exchange pipeline.

9. An operation control device, characterized in that, it includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the low-temperature starting method according to any one of claims 1 to 8.

10. An air conditioner, characterized in that, it includes the operation control device according to claim 9.

11. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the low-temperature starting method according to any one of claims 1 to 8.

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