CN112556114B - Control method and device of air conditioner, storage medium and processor - Google Patents

Abstract

The invention discloses a control method and device of an air conditioner, a storage medium and a processor. Wherein, the method comprises the following steps: under the condition that the air conditioner is in the initial stage of heating, determining that a compressor and a four-way valve of the air conditioner are both in a running state; detecting operation parameters of the air conditioner, wherein the operation parameters comprise: the temperature of an inner pipe of the air conditioner, the temperature of outdoor environment and the working state of an indoor fan; and judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner. The invention solves the technical problems that the air conditioner is easy to have high-voltage protection and high short-time air outlet temperature in the initial stage of heating operation, and further improves the heating performance and the user experience of the air conditioner.

Description

Control method and device of air conditioner, storage medium and processor

Technical Field

The invention relates to the technical field of air conditioner control, in particular to a control method and device of an air conditioner, a storage medium and a processor.

Background

For a heat pump air conditioner, in the initial stage of heating operation, in order to improve comfort experience, a cold wind prevention mode is generally set to prevent cold wind from blowing people, namely, the heat pump air conditioner enters the cold wind prevention mode according to the environment temperature in an air conditioner room and the temperature condition of an indoor pipeline, after the cold wind enters the cold wind prevention mode, an indoor fan is not started or operates at a low wind gear/rotating speed, the cold wind prevention mode is exited when the operation meets certain time or the indoor pipeline temperature reaches a set temperature threshold, and the indoor fan operates at a set wind gear/rotating speed; in the heating full-operation process, in order to prevent the temperature of the outlet air from being too high and the system pressure from being too high, a high-temperature-prevention protection mode is generally set, namely when the temperature of an indoor pipeline of the air conditioner is greater than or equal to a certain set temperature threshold value T1, the high-temperature-prevention protection mode is entered, the operation of an outer fan is stopped, when the temperature of the indoor pipeline is less than or equal to another set temperature threshold value T2, the high-temperature-prevention protection is exited, the outer fan is started to operate, wherein T1 is greater than T2.

The restriction of the position that receives temperature sensor to place, the structure and the material of position, the material of air conditioner pipeline, heat-conduction can be influenced, and the temperature that indoor pipeline temperature sensor detected can lag behind actual pipeline temperature, and the temperature difference exists between the temperature that indoor pipeline temperature sensor detected and actual pipeline temperature promptly also, and actual pipeline temperature changes sooner, and the difference in temperature just is big more. In the initial stage of heating operation, the indoor pipeline temperature is often lower, and there is anti-cold air mode control, and the indoor pipeline temperature rises very fast, very big, and the difference in temperature of indoor pipeline temperature value and actual value that temperature sensor detected is bigger than the difference in temperature of the steady operation stage of heating, and the temperature value that detects can be less than the actual value. At the initial stage of heating operation, under different working conditions, the high temperature protection can not be timely entered with a certain probability, which causes the defects of high air-out temperature and high system pressure in a short time. The air conditioning system is generally provided with a high-voltage switch for setting high-voltage protection, the high-voltage protection is started as long as the system pressure is greater than or equal to a pressure threshold value of the high-voltage switch, the air conditioner is stopped, and the high-voltage protection is easily triggered by the short-time system high pressure in the initial stage of heating operation. If the pressure threshold of the high-voltage switch is increased, the heating stable operation stage is difficult to enter high-voltage protection, and the safety and reliability of the air conditioner are insufficient, so that the pressure threshold firstly ensures the safety of the heating stable operation stage.

Aiming at the technical problem that the user experience is influenced by the high-voltage protection easily occurring at the initial stage of heating operation of the air conditioner, an effective solution is not provided at present.

Disclosure of Invention

The embodiment of the invention provides a control method and device of an air conditioner, a storage medium and a processor, which are used for at least solving the technical problem that the heat pump air conditioner is easy to have high-voltage protection at the initial stage of heating operation.

According to an aspect of an embodiment of the present invention, there is provided a control method of an air conditioner, including: under the condition that the air conditioner is in the initial stage of heating, determining that a compressor and a four-way valve of the air conditioner are both in a running state; detecting operation parameters of the air conditioner, wherein the operation parameters comprise: the temperature of an inner pipe of the air conditioner, the temperature of outdoor environment and the working state of an indoor fan; and judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner.

Further, outdoor fan includes a plurality of gears, judges whether the running state of the outdoor fan of air conditioner is adjusted according to the operating parameter of air conditioner, includes: controlling an outdoor fan of the air conditioner to operate according to the gear of the first outdoor fan under the condition that the gear of the indoor fan is lower than the gear of the first indoor fan and the outdoor environment temperature is higher than or equal to a third preset environment temperature; controlling the outdoor fan to operate according to a preset gear under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan; controlling an outdoor fan of the air conditioner not to be operated in a case where an indoor fan is not operated and the outdoor ambient temperature is higher than or equal to a second preset ambient temperature, wherein the second preset ambient temperature is less than or equal to the third preset ambient temperature.

Further, after controlling the outdoor fan of the air conditioner to operate according to the first outdoor fan gear, the method further includes: detecting the running time of the outdoor fan according to the first outdoor fan gear; if the outdoor fan reaches a fourth preset time according to the running time of the first outdoor fan gear, and the temperature of the inner pipe of the air conditioner is less than or equal to the temperature of the fourth preset inner pipe, controlling the outdoor fan to run according to the preset gear; or if the working gear of the indoor fan is increased, controlling the outdoor fan to operate according to the preset gear.

Further, the outdoor fan includes only one gear, and the operation state of the outdoor fan of the air conditioner is judged whether to be adjusted according to the operation parameters of the air conditioner, including: controlling the outdoor fan of the air conditioner not to run under the condition that the gear of the indoor fan is lower than the gear of the first indoor fan and the outdoor environment temperature is higher than or equal to the first preset environment temperature; controlling the outdoor fan of the air conditioner not to be operated under the condition that the indoor fan is not operated and the outdoor environment temperature is higher than or equal to a second preset environment temperature, wherein the second preset environment temperature is less than or equal to the first preset environment temperature; and under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan, controlling the outdoor fan to operate.

Further, in the case that the gear of the indoor fan is lower than the first gear of the indoor fan and the outdoor ambient temperature is higher than or equal to the first preset ambient temperature, after the outdoor fan of the air conditioner is controlled not to operate, the method further includes: detecting the non-operation time of the outdoor fan; if the time length that the outdoor fan does not operate reaches the first preset time length and the temperature of the inner pipe of the air conditioner is less than or equal to the first preset temperature of the inner pipe, the outdoor fan is restarted to operate; or if the working gear of the indoor fan is raised, the outdoor fan is restarted to run.

Further, in the case that the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to the second preset ambient temperature, after the outdoor fan of the air conditioner is controlled not to be operated, the method further includes: judging whether the gear of the indoor fan is higher than the gear of a second indoor fan, wherein the gear of the second indoor fan is higher than or equal to the gear of the first indoor fan; if the gear of the indoor fan is not higher than the gear of the second indoor fan, determining whether to start the outdoor fan to operate according to the non-operation time of the outdoor fan and the temperature of the inner pipe; if the gear of the indoor fan is higher than the gear of the second indoor fan and smaller than the gear of the third indoor fan, determining whether to start the outdoor fan to operate or not according to the non-operation time of the outdoor fan, the temperature of the inner pipe and the working state of the indoor fan, wherein the gear of the third indoor fan is higher than the gear of the second indoor fan; and if the gear of the indoor fan is higher than that of the third indoor fan, controlling the outdoor fan to start.

Further, if the gear of the indoor fan is not higher than the gear of the second indoor fan, determining whether to start the outdoor fan to operate according to the non-operating time of the outdoor fan and the temperature of the inner pipe, including: and if the time length of the outdoor fan which does not operate is longer than or equal to the second preset time length and the temperature of the inner pipe is less than or equal to the second preset temperature of the inner pipe, controlling the outdoor fan to start.

Further, outdoor fan includes only a gear, if the gear of indoor fan is higher than the second indoor fan gear and is less than the third indoor fan gear, then according to the length of time that outdoor fan does not operate, inner tube temperature and the operating condition of indoor fan confirm whether start outdoor fan operation includes: if the time length of the outdoor fan which does not operate is longer than or equal to a third preset time length and the temperature of the inner pipe is less than or equal to the third preset temperature of the inner pipe, the outdoor fan is restarted to operate; or if the working gear of the indoor fan is raised, the outdoor fan is restarted to run.

Further, outdoor fan includes a plurality of gears, if the gear of indoor fan is higher than the second indoor fan gear and is less than the third indoor fan, then according to the operating condition of outdoor fan time length, inner tube temperature and indoor fan that do not operate and whether start outdoor fan operation, include: controlling the outdoor fan to operate according to the first outdoor fan gear, and recording the operation duration; if the sum of the shutdown time length and the operation time length of the outdoor fan is greater than or equal to a fifth preset time length, and the temperature of the inner tube is less than or equal to the fifth preset temperature of the inner tube, controlling the outdoor fan to operate according to the gear of a second outdoor fan, wherein the gear of the second outdoor fan is higher than the gear of the first outdoor fan; or if the shutdown operation time of the outdoor fan is longer than or equal to a sixth preset time and the temperature of the inner pipe is less than or equal to the sixth preset temperature of the inner pipe, controlling the outdoor fan to operate according to the gear of the second outdoor fan; or if the working gear of the indoor fan is increased, the outdoor fan is controlled to operate according to the gear of the second outdoor fan.

According to an aspect of an embodiment of the present invention, a control apparatus of an air conditioner is provided, including an obtaining module, configured to determine that a compressor and a four-way valve of the air conditioner are both in an operating state when the air conditioner is in a heating initial stage; the detection module is used for detecting the operation parameters of the air conditioner, wherein the operation parameters comprise: the temperature of an inner pipe of the air conditioner, the temperature of outdoor environment and the working state of an indoor fan; and the control module is used for judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner.

According to an aspect of an embodiment of the present invention, there is provided a storage medium including a stored program, wherein a device on which the storage medium is located is controlled to perform the above-described control method of the air conditioner when the program is executed.

According to an aspect of the embodiments of the present invention, there is provided a processor for executing a program, wherein the program executes the control method of the air conditioner.

In the embodiment of the invention, in the initial heating stage of the air conditioner, the temperature of an inner pipe of the air conditioner, the temperature of an outdoor environment and the working state of an indoor fan are detected in real time, after a compressor and a four-way valve operate simultaneously, the operating state and the operating time of the outdoor fan are adjusted according to the temperature of the inner pipe, the temperature of the outdoor environment and the working state of the indoor fan, so that the heat exchange capacities of an indoor unit and an outdoor unit of the air conditioner are balanced, the dynamic adjustment of the load of the air conditioner system is realized, the system pressure is balanced, the technical problems of high-voltage protection and high short-time air outlet temperature caused by only depending on the temperature of the inner pipe of the air conditioner as a control element for the operation of the outdoor fan in the initial heating operation stage are solved, and the heating performance and the user experience of the air conditioner are further improved. In addition, the temperature of an inner pipe of the air conditioner, the temperature of the outdoor environment and the working state of the indoor fan are used as control factors for adjusting the working state of the outdoor fan, the influence of detection errors of the temperature sensor on the system is reduced, and the control precision of the heat exchange balance capacity of the system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a flow chart of a control method for a single damper/RPM motor air conditioner in accordance with an embodiment of the present invention;

FIG. 3 is a flow chart of a control method for a multi-damper/RPM motor air conditioner in accordance with an embodiment of the present invention;

fig. 4 is a schematic diagram of a control apparatus of an air conditioner according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

According to an embodiment of the present invention, there is provided an embodiment of a control method of an air conditioner, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that here.

Fig. 1 is a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:

and S101, determining that a compressor and a four-way valve of the air conditioner are in an operating state under the condition that the air conditioner is in the initial stage of heating.

The air conditioner is a heat pump air conditioner, and generally comprises at least a compressor, a four-way valve, an indoor fan, an outdoor fan and an indoor pipeline. The operation states of the compressor and the four-way valve include 1) only the compressor is operated and the four-way valve is not operated, or 2) the four-way valve is operated and the compressor is not operated, or 3) both the compressor and the four-way valve are not operated, or 4) both the compressor and the four-way valve are simultaneously operated, and the operation states of both the compressor and the four-way valve refer to the 4) state.

It should be noted that the heating initial stage may be understood as a transition stage from the heating mode to the heating stable operation stage of the air conditioner, specifically, a specific time period when the air conditioner enters the heating mode, specifically, a time period before the compressor and the four-way valve are simultaneously operated and a time period after the compressor and the four-way valve are simultaneously operated, for example, the first 5 minutes when the compressor and the four-way valve are simultaneously operated and the last 10 minutes when the compressor and the four-way valve are simultaneously operated may be used. For air conditioners with different models, the period of time before the compressor and the four-way valve are operated simultaneously and the period of time after the compressor and the four-way valve are operated simultaneously can be different, and the two periods of time are not limited. When the compressor and the four-way valve start to operate simultaneously, the air conditioner formally starts to heat.

Step S102, detecting operation parameters of the air conditioner, wherein the operation parameters comprise: the temperature of the inner pipe of the air conditioner, the temperature of the outdoor environment and the working state of the indoor fan. After the aforementioned operation parameters are acquired, the process proceeds to step S103.

Specifically, the temperature T of the inner pipe of the air conditioner_{Inner pipe}The temperature of the indoor pipeline of the air conditioner can be detected and obtained by arranging the temperature sensor at the specific position of the indoor pipeline, and the installation positions of the corresponding temperature sensors are different due to different indoor pipelines of different types of air conditioners, so that the specific position of the indoor pipeline temperature sensor is not limited.

Outdoor ambient temperature T_{Outer ring}The outdoor unit is located at an ambient temperature, and the actual heat exchange capacity of the outdoor unit is affected by the ambient temperature of the outdoor unit, for example, the higher the ambient temperature is, the higher the heat exchange capacity of the outdoor unit is. The ambient temperature of the outdoor fan can be detected and obtained by arranging a temperature sensor at a specific position of the outdoor unit, and different types of air can be usedThe outdoor unit of the air conditioner has different structures and different specific positions for the temperature sensors, and the specific positions for the temperature sensors are not limited herein.

The working state of the indoor fan can specifically comprise starting or stopping, and the grade of a windshield/rotating speed. Generally, an indoor fan of an air conditioner has multi-stage dampers/rotation speeds, such as a micro damper/rotation speed, a low damper/rotation speed, a medium damper/rotation speed, and a high damper/rotation speed.

And step S103, judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner.

It should be noted that, according to different operation parameters of the air conditioner, the determination result in step S103 may be to control the outdoor fan of the air conditioner not to operate, or to control the outdoor fan of the air conditioner to operate. The method for adjusting the running state of the outdoor fan of the air conditioner comprises the following two conditions: 1) for the outdoor fan with single rotating speed/windshield and the outdoor fan with multiple rotating speeds/windshields, adjusting the outdoor fan to be in a stop state, specifically, if the outdoor fan is in the stop state before the compressor and the four-way valve simultaneously run, keeping the stop state according to the step S103; if the outdoor fan is in the running state before the compressor and the four-way valve run simultaneously, the outdoor fan is adjusted to be in the stop state according to the step S103. 2) For an outdoor fan with multiple rotating speeds/windshields, the outdoor fan is adjusted to operate according to a designated gear, and the designated gear is understood as a lower gear in the multiple rotating speeds/windshields (for example, the designated gear is a low rotating speed/windshield), specifically, if the outdoor fan operates at the designated gear before the compressor and the four-way valve operate simultaneously, the outdoor fan keeps operating at the designated gear according to step S103; if the outdoor fan is operated at a rotation speed/damper higher than a designated gear before the compressor and the four-way valve are simultaneously operated, the gear is reduced to operate according to step S103.

Through the steps, in the initial heating stage of the air conditioner, the operation state and the operation time of the outdoor fan are adjusted according to the inner tube temperature, the outdoor environment temperature and the operation state of the indoor fan after the compressor and the four-way valve operate simultaneously by detecting the inner tube temperature, the outdoor environment temperature and the operation state of the indoor fan in real time. On one hand, the outdoor fan is controlled to stop running or shift down to run in time, so that the heat exchange efficiency of the outdoor unit is reduced, and the heat exchange capacities of the indoor unit and the outdoor unit of the air conditioner are effectively controlled and balanced in the initial heating stage, thereby realizing the dynamic adjustment of the load of the air conditioner system and balancing the pressure of the system; on the other hand, the temperature of the inner pipe of the air conditioner, the temperature of the outdoor environment and the working state of the indoor fan are jointly used as control factors for adjusting the working state of the outdoor fan, the influence of detection errors of the temperature sensor on a system is reduced, the technical problems of high-voltage protection and high short-time air outlet temperature caused by only depending on the temperature of the inner pipe of the air conditioner as a control element for the operation of the outdoor fan in the initial stage of heating operation are solved, and the heating performance and the user experience of the air conditioner are improved.

The outdoor unit is an outdoor unit of an air conditioner, the outdoor unit is a heat exchange main body of the air conditioner located outdoors, and an outdoor fan is a part of an outdoor unit structure; the indoor unit refers to an indoor unit of an air conditioner, the indoor unit is a heat exchange main body of the air conditioner located indoors, and an indoor fan is a part of the indoor unit structure.

As an optional embodiment, the outdoor fan includes a plurality of gears, and the determining whether to adjust the operating state of the outdoor fan of the air conditioner according to the operating parameter of the air conditioner includes: the gear of the indoor fan is lower than that of the first indoor fan, and the outdoor environment temperature T_{Outer ring}Higher than or equal to a third preset ambient temperature T_{Outer ring 3}Under the condition of (3), controlling an outdoor fan of the air conditioner to operate according to a first outdoor fan gear; controlling the outdoor fan to operate according to a preset gear under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan; when the indoor fan is not running, and the outdoor ambient temperature T_{Outer ring}Higher than or equal to a second preset ambient temperature T_{Outer ring 2}In case of (1), controlling an outdoor fan of the air conditioner not to be operated, wherein the second preset ambient temperature T_{Outer ring 2}Less than or equal to the third preset ambient temperature T_{Outer ring 3}。

It should be noted that the first indoor fan gear and the first outdoor fan gear are critical points of gear segments determined according to the heat exchange matching degree of the indoor fan and the outdoor fan. The first indoor fan gear may not be a determined actual gear, and for air conditioners of different models, the first indoor fan gear may have different values. For air conditioners with outdoor units with different heat exchange capacities, the gear of the indoor fan lower than the gear of the first indoor fan can be a medium windshield/rotating speed or a micro windshield/rotating speed. The preset gear is a set gear of the outdoor fan in the heating stable stage of the air conditioner.

Third preset ambient temperature T_{Outer ring 3}The third temperature threshold value set according to the heat exchange capacity of the outdoor unit can be understood as if the outdoor environment temperature T is_{Outer ring}To reach T_{Outer ring 3}When the gear of the indoor fan is lower than the gear of the first indoor fan, the heat exchange capacity of the corresponding indoor unit and the heat exchange capacity of the outdoor unit can reach a balanced state. Specifically, if the gear of the indoor fan is lower than the first gear of the indoor fan, it can be considered as working at a lower windshield/rotational speed, and the heat exchange of the corresponding indoor unit is slower. If T is_{Outer ring}＜T_{Outer ring 3}It is stated that the outdoor environment temperature is low, the heat exchange capacity of the outdoor unit is substantially balanced with respect to that of the indoor unit, and the outdoor unit can operate according to the preset gear. And T_{Outer ring}≥T_{Outer ring 3}The outdoor environment can be considered to be at a higher temperature, at this time, the outdoor fan operates at a gear higher than the first outdoor fan, which may cause the heat exchange of the outdoor unit to be faster, the temperature of the indoor pipeline of the air conditioner is raised quickly, the system pressure is easy to be unbalanced, and a short-time high pressure is generated to cause the triggering of the high-voltage protection, so that the gear of the outdoor unit needs to be controlled at the gear of the first outdoor fan, thereby balancing the heat exchange capacity of the indoor unit and the outdoor unit.

Second predetermined ambient temperature T_{Outer ring 2}For a second temperature set according to the heat exchange capacity of the outdoor unitAnd (4) a degree threshold value. When the indoor fan is not operated, the indoor unit performs heat exchange slowly, and compared with the case of working at a lower windshield/rotation speed, the operation of the outdoor fan is more likely to cause rapid temperature rise of indoor pipelines and system pressure imbalance to generate short-time high pressure to trigger high-voltage protection (the higher the external environment temperature is, the higher the heat exchanged by the outdoor unit under the same operation condition is), so that the second preset environment temperature T is higher_{Outer ring 2}It is generally desirable to have less than or equal to T_{Outer ring 3}So that the outdoor fan is comparing T when the indoor fan is not running_{Outer ring 3}The operation can be stopped at lower ambient temperature, the heat exchange of the outdoor unit is slowed down, and the system pressure is balanced.

Under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan, the indoor unit has strong heat exchange capacity, the heat exchange capacity of the indoor unit is balanced and stable, the outdoor fan is controlled to operate according to the preset gear, and the air conditioner enters a heating stable operation stage.

As an alternative embodiment, after controlling the outdoor fan of the air conditioner to operate according to the first outdoor fan gear, the method further includes: detecting the running time t of the outdoor fan according to the gear of the first outdoor fan_{Low wind}(ii) a If the outdoor fan reaches the fourth preset time length according to the running time length of the first outdoor fan gear, and the temperature of the inner pipe of the air conditioner is less than or equal to the fourth preset temperature T of the inner pipe_{Inner tube 4}Controlling the outdoor fan to operate according to a preset gear; or if the working gear of the indoor fan is increased, controlling the outdoor fan to operate according to the preset gear.

The fourth preset time period t4 is a set fourth time threshold, and the setting of t4 is related to the matching degree of the heat exchange capacities of the corresponding outdoor unit and indoor unit. The indoor fan operates according to the first indoor fan gear, the outdoor fan operates according to the first outdoor fan gear and meets t_{Low wind}T is not less than T4_{Inner pipe}≤T_{Inner tube 4}The air conditioner theoretically meets the condition of a heating stable stage, the heat exchange of the indoor unit and the outdoor unit is balanced, and the outdoor fan is controlled to operate according to preset gears. Fourth preset inner tube temperature T_{Inner tube 4}For set air-conditioning indoor pipe temperatureThreshold value of (1), T_{Inner pipe}Above the threshold value T_{Inner tube 4}Under the circumstances, the air conditioner still can appear the too high problem of air-out temperature and system pressure, still need to keep outdoor fan according to the operation of first outdoor fan gear under this kind of circumstances to reduce the temperature of indoor pipeline. Thus at t_{Low wind}T is required to be satisfied under the condition of T4_{Inner pipe}≤T_{Inner tube 4}The method and the device can improve the accuracy of the control of the outdoor fan and avoid the problems of high short-time air outlet and high system pressure in the initial stage of heating.

As an optional embodiment, the outdoor fan includes only one gear, and the determining whether to adjust the operation state of the outdoor fan of the air conditioner according to the operation parameter of the air conditioner includes: the gear of the indoor fan is lower than that of the first indoor fan, and the outdoor environment temperature is higher than or equal to the first preset environment temperature T_{Outer ring 1}Under the condition of (3), controlling an outdoor fan of the air conditioner not to run; the indoor fan is not operated, and the outdoor environment temperature is higher than or equal to a second preset environment temperature T_{Outer ring 2}In case of (1), controlling an outdoor fan of the air conditioner not to be operated, wherein the second preset ambient temperature T_{Outer ring 2}Less than or equal to a first preset ambient temperature T_{Outer ring 1}(ii) a And under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan, controlling the outdoor fan to operate.

Specifically, if the gear of the indoor fan is lower than the gear of the first indoor fan, it can be considered as working at a lower windshield/rotation speed, and the heat exchange of the indoor unit is slower. If T is_{Outer ring}＜T_{Outer ring 1}If the outdoor environment temperature is low, the heat exchange capacity of the outdoor unit is matched with that of the indoor unit, and the operation of the outdoor fan needs to be maintained, or the heat exchange capacity of the outdoor unit does not meet the requirement of heating of the indoor pipeline and the outdoor fan needs to be started to operate so as to improve the heating capacity of the indoor pipeline. And T_{Outer ring}≥T_{Outer ring 1}It can be considered that the outdoor environment is at a higher temperature, at this time, the operation of the outdoor fan will result in a faster heat exchange of the outdoor unit, the temperature of the indoor pipeline of the air conditioner rises quickly, the system pressure is easy to be unbalanced, and a short-time high pressure is generated to trigger the high-pressure protection, so the outdoor fan needs to be in need of high-pressure protectionThe operation is stopped to slow down the heat exchange of the outdoor unit, so as to balance the system pressure. Correspondingly, when the gear of the indoor fan is equal to or higher than the gear of the first indoor fan, the heat exchange capacity of the indoor fan reaches the heat exchange capacity of the heating stable operation stage, the heat exchange quantity of the outdoor fan needs to be increased correspondingly, and the air conditioner is controlled to enter the heating stable operation stage after the outdoor fan operates.

As an alternative embodiment, in the case that the gear of the indoor fan is lower than the first gear of the indoor fan, and the outdoor environment temperature is higher than or equal to the first preset environment temperature, after the outdoor fan of the air conditioner is controlled not to operate, the method further includes: detecting the time t when the outdoor fan is not running_{External wind stop}(ii) a If the non-operation time of the outdoor fan reaches the first preset time T1, and the temperature of the inner pipe of the air conditioner is less than or equal to the first preset temperature T of the inner pipe_{Inner pipe 1}Restarting the outdoor fan to operate; or if the working gear of the indoor fan is raised, the outdoor fan is restarted to run.

It should be noted that the first preset time period t1 is a set first time threshold, t_{External wind stop}T1 is that when the time when the outdoor fan does not operate reaches t1, the air conditioner theoretically meets the condition of the stable heating stage (i.e. the outlet air temperature and the system pressure of the air conditioner are normal), the outdoor fan can be restarted to operate, and the setting of t1 is related to the heat exchange capacity of the corresponding outdoor unit. First preset inner tube temperature T_{Inner pipe 1}Is a first threshold value, T, of the set temperature of the indoor pipeline of the air conditioner_{Inner pipe}Above the threshold value T_{Inner pipe 1}Under the circumstances, the air conditioner may also have the problem that the outlet air temperature is too high and the system pressure is too high, and in this case, the outdoor fan still needs to be kept out of work to reduce the temperature of the indoor pipeline.

The working gear of the indoor fan is increased, that is, the gear of the indoor fan is increased from the gear of the indoor fan lower than the gear of the first indoor fan to the gear equal to or higher than the gear of the first indoor fan, the heat exchange capacity of the indoor unit exceeds the balance critical value determined by the gear of the first indoor fan at the moment, the outdoor fan is controlled to operate, and the air conditioner enters a heating stable operation stage at the moment.

As an alternative embodiment, in the case that the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to the second preset ambient temperature, after the outdoor fan of the air conditioner is controlled not to be operated, the method further includes: judging whether the gear of the indoor fan is higher than the gear of a second indoor fan, wherein the gear of the second indoor fan is higher than or equal to the gear of the first indoor fan; if the gear of the indoor fan is not higher than the gear of the second indoor fan, determining whether to start the outdoor fan to operate according to the non-operation time of the outdoor fan and the temperature of the inner pipe; if the gear of the indoor fan is higher than the gear of the second indoor fan and smaller than the gear of the third indoor fan, determining whether to start the outdoor fan to operate or not according to the non-operation time of the outdoor fan, the temperature of the inner pipe and the working state of the indoor fan, wherein the gear of the third indoor fan is higher than the gear of the second indoor fan; and if the gear of the indoor fan is higher than that of the third indoor fan, controlling the outdoor fan to start.

It should be noted that the gear of the second indoor fan is that the outdoor fan is not operated and T is satisfied during the initial stage of heating_{Outer ring}≥T_{Outer ring 2}Under the condition, the critical point of the gear segment determined according to the working heat exchange matching degree of the indoor unit and the outdoor unit can be understood that when the indoor fan is switched to the gear of the second indoor fan from non-operation, the heat discharge rate accumulated by the indoor pipeline is still lower than the working heat exchange capacity of the outdoor unit, so that the outdoor fan still needs to be kept in a shutdown state for a period of time, and the indoor fan operates for a period of time at the gear of the second indoor fan to enable the heat exchange capacity of the indoor pipeline to reach a balance state.

The gear of the third indoor fan is that the outdoor fan does not run and meets T in the initial heating stage_{Outer ring}≥T_{Outer ring 2}Under the condition, when the indoor fan is switched to the third indoor fan gear from non-operation, the critical point of the gear segmentation determined according to the working heat exchange matching degree of the indoor unit and the outdoor unit can be understood as that at the critical point of the third indoor fan gear, the heat dissipation capacity of the indoor unit is large enough to balance the working heat exchange of the indoor unit and the outdoor unit. Because the indoor fan is in the initial state of non-work, the heating is performed at firstThe accumulated heat quantity is higher in the initial stage, so that the condition higher than or equal to the gear of the third indoor fan is used as the operation judgment condition of the outdoor fan to ensure that the indoor unit has enough heat exchange capacity to be balanced with the outdoor fan after the outdoor unit is started to generate heat exchange.

The second indoor fan gear and the third indoor fan gear are not specific gear values, and the gears may be divided differently for different air conditioner models. In an embodiment of the air conditioner having an indoor fan with a three-gear windshield (low wind speed gear, medium wind speed gear, high wind speed gear), the gear not higher than the second indoor fan may be a low wind speed gear, the gear higher than the third indoor fan may be a medium wind speed gear or a high wind speed gear, and the gear higher than the second indoor fan and smaller than the third indoor fan may be a low wind speed gear or a medium wind speed gear. In an embodiment of the air conditioner with an indoor fan having a fourth-gear windshield (a breeze gear, a low wind gear, a medium wind gear, and a high wind gear), the gear not higher than the second indoor fan may be the breeze gear, the gear higher than the third indoor fan may be the medium wind gear, and the gear higher than the second indoor fan and smaller than the third indoor fan may be the low wind gear.

The gear of the indoor fan is not higher than the gear of the second indoor fan, and the indoor fan is understood to be in an inoperative state, or lower than the gear of the second indoor fan, or equal to the gear of the second indoor fan. Under the above working conditions, the heat discharge rate accumulated in the indoor pipeline is still lower than the heat exchange capacity of the outdoor fan, so the outdoor fan still needs to be kept in a shutdown state for a period of time, and the indoor fan operates for a period of time at the above gear to enable the heat exchange capacity of the indoor pipeline to reach a balance state. Thus, will t_{External wind stop}And T_{Inner pipe}The method is used as a supplementary condition for judging whether the outdoor fan operates or not, so that the accuracy of controlling the outdoor fan is improved, and the problems of high short-time air outlet and high system pressure in the initial stage of heating are avoided.

As an alternative embodiment, if the gear of the indoor fan is not higher than the gear of the second indoor fan, the gear is determined according to the time t when the outdoor fan is not running_{External wind stop}And temperature of the inner tubeDecide whether to start outdoor fan operation includes: and if the time length of the non-operation of the outdoor fan is more than or equal to a second preset time length t2 and the temperature of the inner pipe is less than or equal to a second preset inner pipe temperature, controlling the outdoor fan to start.

Second preset inner tube temperature T_{Inner pipe 2}Is a set second threshold value, T, of the temperature of the indoor pipeline of the air conditioner_{Inner pipe}Above the threshold value T_{Inner pipe 2}Under the circumstances, the air conditioner may also have the problem that the outlet air temperature is too high and the system pressure is too high, and in this case, the outdoor fan still needs to be kept out of work to reduce the temperature of the indoor pipeline. Thus at t_{External wind stop}T is required to be satisfied under the condition of T2_{Inner pipe}≤T_{Inner pipe 2}The method and the device can improve the accuracy of the control of the outdoor fan and avoid the problems of high short-time air outlet and high system pressure in the initial stage of heating.

As an alternative embodiment, the determining whether to start the operation of the outdoor fan according to the non-operation time of the outdoor fan, the temperature of the inner pipe, and the working state of the indoor fan includes: if the outdoor fan does not operate for a time period greater than or equal to a third preset time period T3 and the inner pipe temperature is less than or equal to a third preset inner pipe temperature T_{Inner pipe 3}Restarting the outdoor fan to operate; or if the working gear of the indoor fan is raised, the outdoor fan is restarted to run.

It should be noted that the third preset time period t3 is the set third time threshold, t_{External wind stop}T3 is that when the time that the outdoor fan does not operate reaches t3, the sum of the time that the indoor fan does not operate in the self-heating initial stage and the operation time that the operation time is higher than the gear of the second indoor fan and is less than the gear of the third indoor fan is t3, the air conditioner theoretically meets the condition of the heating stable stage, the outdoor fan can be restarted to operate, and the setting of t3 is related to the matching degree of the heat exchange capacities of the outdoor fan and the indoor fan. Third preset inner tube temperature T_{Inner pipe 3}Is a third threshold value, T, of the set temperature of the indoor pipeline of the air conditioner_{Inner pipe}Above the valveValue T_{Inner pipe 3}Under the circumstances, the air conditioner may also have the problem that the outlet air temperature is too high and the system pressure is too high, and in this case, the outdoor fan still needs to be kept out of work to reduce the temperature of the indoor pipeline. Thus at t_{External wind stop}T is required to be satisfied under the condition of T3_{Inner pipe}≤T_{Inner pipe 3}The method and the device can improve the accuracy of the control of the outdoor fan and avoid the problems of high short-time air outlet and high system pressure in the initial stage of heating.

As an optional embodiment, the determining, by the outdoor fan, whether to start the operation of the outdoor fan according to the non-operation duration of the outdoor fan, the temperature of the inner pipe, and the working state of the indoor fan, includes: controlling the outdoor fan to operate according to the first outdoor fan gear, and recording the operation time t_{Low wind}(ii) a If the sum of the shutdown time length and the operation time length of the outdoor fan is more than or equal to a fifth preset time length T5, and the temperature of the inner pipe is less than or equal to a fifth preset temperature T of the inner pipe_{Inner tube 5}Controlling the outdoor fan to operate according to the gear of a second outdoor fan, wherein the gear of the second outdoor fan is higher than the gear of the first outdoor fan; or if the shutdown operation time of the outdoor fan is longer than or equal to the sixth preset time T6, and the temperature of the inner pipe is less than or equal to the sixth preset temperature T of the inner pipe_{Inner tube 6}Controlling the outdoor fan to operate according to the gear of the second outdoor fan; or if the working gear of the indoor fan is increased, the outdoor fan is controlled to operate according to the gear of the second outdoor fan.

Because the second outdoor fan gear is higher than the first outdoor fan gear, the heat exchange efficiency of the outdoor fan when the outdoor fan operates in the second outdoor fan gear is higher than the first outdoor fan gear. The second outdoor fan gear may also be the same as the preset gear at the heating stable operation stage.

The fifth preset duration t5 is the set fifth time threshold t_{External wind stop}+t_{Low wind}T5 is that when the sum of the time when the outdoor fan does not operate and the time when the outdoor fan operates at the first outdoor fan gear reaches t5, the air conditioner theoretically meets the condition of the heating stable stage, and the outdoor fan can be heightenedThe gears are used for increasing the heat exchange efficiency of the outdoor unit, and the setting of t5 is related to the matching degree of the heat exchange capacities of the indoor unit and the outdoor unit corresponding to the outdoor fan and the indoor fan at different gears. Fifth preset inner tube temperature T_{Inner tube 5}Is a fifth temperature threshold value, T, of the set temperature of the indoor pipeline of the air conditioner_{Inner pipe}Above the threshold value T_{Inner tube 5}The air conditioner may also have problems of over-high outlet air temperature and over-high system pressure, in which case the outdoor fan still needs to be kept out of operation or operated at a low wind level to lower the temperature of the indoor pipeline.

The sixth preset time t6 is a set sixth time threshold, and although the outdoor fan operates in the first indoor fan gear, only the stop time of the outdoor fan is determined, which may also be used as a determination condition for determining the gear increase of the outdoor fan.

Each temperature threshold value T_{Inner pipe 1}、T_{Inner pipe 2}、T_{Inner pipe 3}、T_{Inner tube 4}、T_{Inner tube 5}、T_{Inner tube 6}The value of (2) is related to the heat bearing capacity of the indoor pipeline of the indoor unit of the air conditioner and the matching degree of the heat exchange capacity of the indoor unit/outdoor unit, the setting of the temperature threshold values of different types of air conditioners can be the same or different, and the T inner pipe 1, the T inner pipe 2, the T inner pipe 3, the T inner pipe 4, the T inner pipe 5 and the T inner pipe 6 can be the same or different. For air conditioners with single windshield outdoor fans and air conditioners with multiple windshield outdoor fans, T_{Inner pipe 2}The setting of (b) may be the same or different, and is not limited herein.

The values of the preset durations t1, t2, t3, t4, t5 and t6 are related to the matching degree of the heat exchange capacities of the indoor unit and the outdoor unit corresponding to each gear of the indoor fan and each gear of the outdoor fan of the air conditioner, the air conditioners of different models can be set to the same or different preset durations, and the values of t1, t2, t3, t4, t5 and t6 can be the same or different. The setting of t2 may be the same or different for the air conditioner with single-windshield outdoor fan and the air conditioner with multi-windshield outdoor fan, and is not limited herein.

The control method is further described below with reference to a flowchart of the control method provided in the embodiment of fig. 2. In the embodiment of fig. 2, the indoor fan comprises at least 2 dampers, i.e. low and medium wind/speed; the outdoor fan is in a single windshield/rotating speed state and only has two working states of operation and non-operation. Specifically, the gear lower than the first indoor fan is a low wind gear/rotation speed, the gear equal to or higher than the first indoor fan is a medium wind gear/rotation speed or more, the gear not higher than the second indoor fan is a low wind gear/rotation speed, the gear higher than the second indoor fan is a low wind gear/rotation speed less than the gear of the third indoor fan, and the gear higher than the gear of the third indoor fan is a medium wind gear/rotation speed or more.

Step S200, the air conditioner enters a heating initial stage after being started, and step S201 is carried out to detect the temperature T of an inner pipe of the air conditioner in real time_{Inner pipe}Outdoor ambient temperature T_{Outer ring}And the working state of the indoor fan, and step S202 is carried out to determine whether the compressor and the four-way valve of the air conditioner are in the running state at the same time, if not, the step S202 is circulated to continuously judge whether the compressor and the four-way valve are in the running state at the same time until the judgment result is yes. If yes (namely, the compressor and the four-way valve are both in running states), step S203 is entered to judge the working state of the indoor fan, and the different working states of the indoor fan comprise: the gear of the indoor fan is low wind gear/rotating speed, the gear of the indoor fan is medium wind gear/rotating speed or above, and the indoor fan does not work, and the method respectively enters the branch steps S204, S209 and S211 according to the three different working states. The sequence of steps S201 and S202 is not strictly required, and T may be detected after determining whether the compressor and the four-way valve of the air conditioner are in the operating state at the same time_{Inner pipe}、T_{Outer ring}And the working state of the indoor fan.

Step S204, when the working state of the indoor fan is detected to be working and the gear of the indoor fan is in a low wind gear/rotating speed state, the step S205 is entered to further judge the outdoor environment temperature T_{Outer ring}Whether it is higher than the first preset ambient temperature T_{Outer ring 1}. If T is_{Outer ring}≥T_{Outer ring 1}If yes, the outdoor fan is not operated and the step S206 is entered; if T is_{Outer ring}＜T_{Outer ring 1}Then, the flow proceeds to step S210 to control the outdoor airThe machine is operated.

And step S209, when the gear of the indoor fan is the middle gear/rotating speed or above, the control method proceeds to step S210 to control the outdoor fan to operate. Generally speaking, the indoor fan works at or above the medium wind gear/rotation speed, the heat exchange capacity of the indoor unit reaches the heat exchange capacity of the heating stable operation stage, the heat exchange capacity of the outdoor unit needs to be increased correspondingly, and the air conditioner enters the heating stable operation stage after the outdoor fan is controlled to operate.

The indoor fan is in low gear/speed in step S204 and the outdoor ambient temperature T in step S205_{Outer ring}Higher than a first predetermined ambient temperature T_{Outer ring 1}In case that the outdoor fan of the air conditioner is not operated, the step S206 is performed, and the non-operation time period t of the outdoor fan is detected_{External wind stop}And proceeds to step S207. Specifically, if the operation state of the outdoor fan is operated before the adjustment in step S206, the time period t during which the outdoor fan is not operated is detected_{External wind stop}The timing is synchronously started when the outdoor fan is stopped in the step S206; if the operation state of the outdoor fan is stopped before the adjustment in step S206, the period t during which the outdoor fan is not operated_{External wind stop}Is a judgment of T from step S205_{Outer ring}≥T_{Outer ring 1}And when the conditions are met, timing is started.

Step S207, determining whether one of the following conditions is satisfied: condition 1) whether or not t_{External wind stop}T is not less than T1_{Inner pipe}≤T_{Inner pipe 1}And judging the condition 2) that the working gear of the indoor fan is increased to be equal to or higher than the medium gear/rotating speed, the conditions 1) and 2) are in parallel relation, if one of the conditions is met, the step S208 is executed to start the outdoor fan to operate, and the air conditioner is executed in the heating stable operation stage; only when both the judgment condition 1) and the judgment condition 2) are not satisfied, the process returns to S207 to perform the loop judgment until either of the two judgment conditions is satisfied.

Step S211, when the working state of the indoor fan is detected to be non-running, the step S212 is entered to further judge the outdoor environment temperature T_{Outer ring}Whether the temperature is more than or equal to a second preset environmental temperature T_{Outer ring 2}If T is_{Outer ring}≥T_{Outer ring 2}If the outdoor fan is notOperation is performed and step S213 is entered; if T is_{Outer ring}＜T_{Outer ring 2}Then, the process proceeds to step S210 to control the outdoor fan to operate.

Step S213, the outdoor fan is not operated, and the out-of-operation time of the outdoor fan is timed to t_{External wind stop}And proceeds to step S214. Specifically, if the operation state of the outdoor fan is operated before the adjustment in step S213, the time period t during which the outdoor fan is not operated is detected_{External wind stop}Synchronously starting timing when the outdoor fan is stopped in step S213; if the operation state of the outdoor fan is stopped before the adjustment in step S213, the period t during which the outdoor fan is not operated_{External wind stop}Is judged T from step S212_{Outer ring}≥T_{Outer ring 2}And starting timing when the conditions are met.

And step S214, judging whether the gear of the indoor fan is a low gear/rotating speed or above. If the gear of the indoor fan has not reached the low windshield/speed (e.g., the indoor fan is not running or is running at a lesser windshield/speed), then proceed to step S215; if the gear of the indoor fan reaches the low wind gear/rotating speed, the step S216 is entered to further judge whether the gear reaches the medium wind gear/rotating speed, if the gear of the indoor fan is only the low wind gear/rotating speed, the step S217 is entered, and if the gear of the indoor fan reaches the medium wind gear/rotating speed or more, the step S208 is entered to control the outdoor fan to operate the air conditioner to enter the heating stable operation stage.

Step S215, if the step S214 shows that the gear of the indoor fan is lower than the low windshield/rotating speed, the operation time t of the outdoor fan is further determined according to the non-operation time_{External wind stop}And inner tube temperature T_{Inner pipe}And determining whether to start the outdoor fan to operate. If t is_{External wind stop}Reaching a second preset time T2, and the temperature T of the inner tube_{Inner pipe}Temperature T of the inner tube less than or equal to the second preset temperature_{Inner pipe 2}Then, the method goes to step S208 to control the outdoor fan to start. If not, the process returns to step S214 and repeats the above steps.

And step S216, judging whether the wind shield of the indoor fan reaches the middle wind shield/rotating speed or above under the condition that the wind shield of the indoor fan reaches the low wind shield/rotating speed. If yes, the method goes to step S208 to control the outdoor fan to start. If not, the gear of the indoor fan is only low gear/speed, then step S217 is entered.

Step S217, determining whether any one of the following two conditions is satisfied: 1) time t when outdoor fan does not run_{External wind stop}Reaching a third preset time period T3 and the temperature T of the inner tube_{Inner pipe}Not more than third preset inner tube temperature T_{Inner pipe 3}And 2) increasing the working gear of the indoor fan to be at or above the medium wind gear/rotating speed, and if one of the conditions 1) or 2) is met, entering the step S208 to restart the outdoor fan to operate. If both of the judgment conditions in S217 are not satisfied, the step S217 is repeated until one of the above conditions is satisfied.

And S208, starting the outdoor fan, and enabling the air conditioner to enter a heating stable operation stage.

The embodiment of fig. 3 provides a flow chart of a control method for an outdoor fan of a multi-windshield/speed motor, wherein the indoor fan at least comprises 2 windshields, and the outdoor fan at least comprises 2 windshields/speed. Specifically, the gear lower than the first indoor fan is a low wind gear/rotation speed, the gear equal to or higher than the first indoor fan is a medium wind gear/rotation speed or more, the gear not higher than the second indoor fan is a low wind gear/rotation speed, the gear higher than the second indoor fan is a low wind gear/rotation speed less than the gear of the third indoor fan, and the gear higher than the gear of the third indoor fan is a medium wind gear/rotation speed or more. The first outdoor fan is arranged at a low windshield speed, and the outdoor fan further comprises a preset gear which is set when the air conditioner works in a heating stable stage.

Step S300, the air conditioner enters a heating initial stage after being started, and step S301 is carried out to detect the temperature T of an inner pipe of the air conditioner in real time_{Inner pipe}Outdoor ambient temperature T_{Outer ring}And the working state of the indoor fan, and step S302 is carried out to determine whether the compressor and the four-way valve of the air conditioner are in the running state at the same time, if not, the step S302 is circulated to continuously judge whether the compressor and the four-way valve are in the running state at the same time until the judgment result is yes. If yes (namely, the compressor and the four-way valve are both in running states), the method goes to step S303 to judge the working state of the indoor fan, and the different working states of the indoor fan comprise:the gear of the indoor fan is low wind gear/rotating speed, the gear of the indoor fan is medium wind gear/rotating speed or above, and the indoor fan does not work, and the method respectively enters the steps S304, S309 and S311 according to the three different working states. The sequence of steps S301 and S302 is not strictly required, and T may be detected after determining whether the compressor and the four-way valve of the air conditioner are in the operating state at the same time_{Inner pipe}、T_{Outer ring}And the working state of the indoor fan.

Step S304, when the working state of the indoor fan is working and the gear of the indoor fan is low wind gear/rotating speed are detected, the step S305 is entered to further judge the outdoor environment temperature T_{Outer ring}Whether or not it is greater than or equal to a third preset ambient temperature T_{Outer ring 3}. If T is_{Outer ring}≥T_{Outer ring 3}Then, the step S306 is entered to control the outdoor fan to run at a low wind shield; if T is_{Outer ring}＜T_{Outer ring 3}Then, step S308 is performed to control the outdoor fan to operate according to the set windshield/rotation speed, and the air conditioner enters a heating stable operation stage.

And step S309, when the gear of the indoor fan is the middle gear/rotating speed or above, the control method enters step S308 to control the outdoor fan to operate according to the set gear/rotating speed. Generally speaking, the indoor fan works at or above a medium wind gear/rotating speed, the heat exchange capacity of the indoor unit reaches the heat exchange capacity of the heating stable operation stage, the heat exchange capacity of the outdoor unit needs to be increased correspondingly, and the air conditioner is controlled to enter the heating stable operation stage after the outdoor fan operates according to the set wind gear/rotating speed.

The indoor fan is shifted to a low wind/speed in step S304, and the outdoor ambient temperature T is set in step S305_{Outer ring}Greater than or equal to a third preset ambient temperature T_{Outer ring 3}In the case of (1), the method proceeds to step S306 to control the outdoor fan of the air conditioner to operate at a low windshield/rotational speed, and detects the time duration t of the outdoor fan operating at the low windshield/rotational speed_{Low wind}The process advances to step S307.

Step S307, determining whether one of the following conditions is satisfied: condition 1) whether or not t_{Low wind}T is not less than T4_{Inner pipe}≤T_{Inner tube 4}(ii) a Condition 2) operating position of indoor fan is raised to middleThe wind gear/rotating speed is more than or equal to the wind gear/rotating speed, the conditions 1) and 2) are in parallel relation, if one of the wind gear/rotating speed and the condition is met, the outdoor fan operates according to a set wind gear in the step S308, and the air conditioner enters a heating stable operation stage; and returning to the circulating judgment only under the condition that the judgment condition 1) and the judgment condition 2) are not satisfied until the two judgment conditions satisfy any one of the two judgment conditions.

Step S311, when the working state of the indoor fan is detected to be non-running, the step S312 is executed to further judge the outdoor environment temperature T_{Outer ring}Whether it is greater than or equal to the second preset ambient temperature T_{Outer ring 2}If T is_{Outer ring}≥T_{Outer ring 2}If yes, the outdoor fan is not operated and the step S313 is entered; if T is_{Outer ring}＜T_{Outer ring 2}Then, the method goes to step S308 to control the outdoor fan to operate according to the set windshield.

Step S313, the outdoor fan is not operated, and the out-of-operation time of the outdoor fan is timed to t_{External wind stop}And proceeds to step S314.

And step S314, judging whether the gear of the indoor fan is a low gear/rotating speed or above. If the gear of the indoor fan has not reached the low windshield/speed (e.g., the indoor fan is not running or is running at a lesser windshield/speed), then proceed to step S315; if the gear of the indoor fan reaches the low wind gear/rotating speed, the step S316 is entered to further judge whether the gear reaches the medium wind gear/rotating speed or above, if the gear of the indoor fan is only the low wind gear/rotating speed, the step S317 is entered, and if the gear of the indoor fan reaches the medium wind gear/rotating speed or above, the step S308 is entered to control the outdoor fan to operate the air conditioner according to the preset wind gear to enter the heating stable operation stage.

Step S315, if the judgment result of S314 is that the gear of the indoor fan is lower than the low windshield/rotating speed, further according to the time length t when the outdoor fan does not operate_{External wind stop}And inner tube temperature T_{Inner pipe}And determining whether to start the outdoor fan to operate. If t_{External wind stop}Reaching a second preset time T2, and the temperature T of the inner tube_{Inner pipe}Temperature T of the inner tube less than or equal to the second preset temperature_{Inner pipe 2}Then, the method goes to step S308 to control the outdoor fan to start. If not, the process returns to step S314 to repeatAnd (5) the steps are described above.

Step S317, controlling the outdoor fan to operate according to the low windshield/rotating speed, and recording the operation time as t_{Low wind}And the process proceeds to step S318, where it is determined whether one of the following conditions is satisfied: 1) t is t_{External wind stop}+t_{Low wind}T is not less than T5_{Inner pipe}≤T_{Inner tube 5}；2)t_{External wind stop}T is not less than T6_{Inner pipe}≤T_{Inner tube 6}(ii) a 3) The wind/speed of the indoor fan is increased (understood to be the wind/speed of the indoor fan is increased to or above the medium wind/speed). And if one of the three conditions is met, the step S308 is carried out, the outdoor fan is controlled to operate according to the preset gear, and if the three conditions are not met, the step S317 is returned to repeat the steps.

According to the embodiment, the running state of the outdoor fan of the air conditioner is judged whether to be adjusted or not by detecting the time length when the outdoor fan does not run, the temperature of the inner pipe and the working state of the indoor fan, so that the reliability and the accuracy of heat exchange management of an indoor unit and an outdoor unit of the air conditioner are improved, and the technical problems that the air conditioner is easy to have high-voltage protection and high short-time air outlet temperature at the initial stage of heating running are solved.

Example 2

According to an embodiment of the present invention, there is provided an embodiment of a control device of an air conditioner, as shown in fig. 4, the control device of the air conditioner includes

The acquiring module 40 is used for determining that a compressor and a four-way valve of the air conditioner are both in an operating state under the condition that the air conditioner is in a heating initial stage;

a detecting module 42, configured to detect an operating parameter of the air conditioner, where the operating parameter includes: the temperature of an inner pipe of the air conditioner, the temperature of outdoor environment and the working state of an indoor fan;

and the control module 44 is used for judging whether to adjust the operation state of the outdoor fan of the air conditioner according to the operation parameters of the air conditioner.

The control device of the air conditioner proposed in this embodiment further includes a module or a unit for executing other steps in embodiment 1, which is not described herein again.

According to an embodiment of the present invention, there is provided a storage medium including a stored program, wherein, when the program runs, a device in which the storage medium is located is controlled to execute the control method of the air conditioner.

According to an embodiment of the present invention, there is provided a processor for executing a program, wherein the program executes the control method of the air conditioner.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A control method of an air conditioner, comprising:

under the condition that the air conditioner is in the initial stage of heating, determining that a compressor and a four-way valve of the air conditioner are both in an operating state;

detecting operating parameters of the air conditioner, wherein the operating parameters comprise: the temperature of an inner pipe of the air conditioner, the temperature of an outdoor environment and the working state of an indoor fan;

judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner,

the outdoor fan comprises a plurality of gears, and the operation state of the outdoor fan of the air conditioner is judged whether to be adjusted according to the operation parameters of the air conditioner, and the method comprises the following steps:

controlling an outdoor fan of the air conditioner to operate according to the gear of the first outdoor fan under the condition that the gear of the indoor fan is lower than the gear of the first indoor fan and the outdoor environment temperature is higher than or equal to a third preset environment temperature;

controlling the outdoor fan to operate according to a preset gear under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan;

controlling an outdoor fan of the air conditioner not to be operated in a case where the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to a second preset ambient temperature, wherein the second preset ambient temperature is less than or equal to the third preset ambient temperature,

in case that the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to a second preset ambient temperature, after controlling the outdoor fan of the air conditioner not to be operated, the method further includes:

judging whether the gear of the indoor fan is higher than a second indoor fan gear, wherein the second indoor fan gear is higher than or equal to the first indoor fan gear;

if the gear of the indoor fan is not higher than the gear of the second indoor fan, determining whether to start the outdoor fan to operate according to the time length when the outdoor fan does not operate and the temperature of the inner pipe;

if the gear of the indoor fan is higher than the gear of a second indoor fan and smaller than the gear of a third indoor fan, determining whether to start the outdoor fan to operate according to the non-operation time of the outdoor fan, the temperature of the inner pipe and the working state of the indoor fan, wherein the gear of the third indoor fan is higher than the gear of the second indoor fan;

and if the gear of the indoor fan is higher than that of the third indoor fan, controlling the outdoor fan to start.

2. The method of claim 1, wherein after controlling the outdoor fan of the air conditioner to operate in the first outdoor fan gear, the method further comprises:

detecting the running time of the outdoor fan according to the gear of the first outdoor fan;

if the outdoor fan reaches a fourth preset time according to the running time of the first outdoor fan gear, and the temperature of the inner pipe of the air conditioner is less than or equal to the temperature of the fourth preset inner pipe, controlling the outdoor fan to run according to the preset gear; or

And if the working gear of the indoor fan is increased, controlling the outdoor fan to operate according to a preset gear.

3. The method of claim 1, wherein the outdoor fan comprises only one gear, and the determining whether to adjust the operating state of the outdoor fan of the air conditioner according to the operating parameters of the air conditioner comprises:

controlling an outdoor fan of the air conditioner not to run under the condition that the gear of the indoor fan is lower than a first indoor fan gear and the outdoor environment temperature is higher than or equal to a first preset environment temperature;

controlling an outdoor fan of the air conditioner not to be operated in a case where the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to a second preset ambient temperature, wherein the second preset ambient temperature is less than or equal to the first preset ambient temperature;

and controlling the outdoor fan to operate under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan.

4. The method of claim 3, wherein in case the gear of the indoor fan is lower than a first indoor fan gear and the outdoor ambient temperature is higher than or equal to a first preset ambient temperature, after controlling an outdoor fan of the air conditioner not to operate, the method further comprises:

detecting the time length of the non-operation of the outdoor fan;

if the time length that the outdoor fan does not operate reaches a first preset time length and the temperature of the inner pipe of the air conditioner is less than or equal to the first preset temperature of the inner pipe, restarting the outdoor fan to operate; or

And if the working gear of the indoor fan is raised, restarting the outdoor fan to operate.

5. The method of claim 1, wherein determining whether to initiate operation of the outdoor fan based on the length of time the outdoor fan is not operating and the inner tube temperature if the indoor fan is not in a higher gear than the second indoor fan gear comprises:

and if the time length that the outdoor fan does not operate is greater than or equal to a second preset time length and the temperature of the inner pipe is less than or equal to the second preset temperature of the inner pipe, controlling the outdoor fan to start.

6. The method of claim 1, wherein the outdoor fan includes only one gear, and wherein determining whether to initiate operation of the outdoor fan based on the length of time the outdoor fan is not operating, the inner duct temperature, and the operating state of the indoor fan if the gear of the indoor fan is higher than the second indoor fan gear and less than the third indoor fan gear comprises:

if the time length of the outdoor fan which is not operated is longer than or equal to a third preset time length and the temperature of the inner pipe is less than or equal to a third preset temperature of the inner pipe, restarting the outdoor fan to operate; or

And if the working gear of the indoor fan is raised, restarting the outdoor fan to operate.

7. The method of claim 1, wherein the outdoor fan comprises a plurality of gears, and wherein determining whether to initiate operation of the outdoor fan based on the length of time the outdoor fan is not operating, the inner duct temperature, and the operating state of the indoor fan if the gear of the indoor fan is higher than the second indoor fan gear and less than the third indoor fan gear comprises:

controlling the outdoor fan to operate according to the first outdoor fan gear, and recording the operation duration;

if the sum of the shutdown time length and the operation time length of the outdoor fan is greater than or equal to a fifth preset time length, and the temperature of the inner pipe is less than or equal to the temperature of a fifth preset inner pipe, controlling the outdoor fan to operate according to the gear of a second outdoor fan, wherein the gear of the second outdoor fan is higher than the gear of the first outdoor fan; or

If the running time of the outdoor fan is longer than or equal to a sixth preset time and the temperature of the inner pipe is less than or equal to the sixth preset temperature of the inner pipe, controlling the outdoor fan to run according to the gear of a second outdoor fan; or

And if the working gear of the indoor fan is increased, controlling the outdoor fan to operate according to the gear of a second outdoor fan.

8. A control device of an air conditioner, characterized by comprising:

the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for determining that a compressor and a four-way valve of the air conditioner are in a running state under the condition that the air conditioner is in a heating initial stage;

the detection module is used for detecting the operation parameters of the air conditioner, wherein the operation parameters comprise: the temperature of an inner pipe of the air conditioner, the temperature of an outdoor environment and the working state of an indoor fan;

the first control module is used for judging whether to adjust the running state of an outdoor fan of the air conditioner according to the running parameters of the air conditioner,

the outdoor fan comprises a plurality of gears, the control module comprises a first control submodule, a second control submodule and a third control submodule, and the first control submodule is used for controlling the outdoor fan of the air conditioner to operate according to the gear of the first outdoor fan under the condition that the gear of the indoor fan is lower than the gear of the first indoor fan and the outdoor environment temperature is higher than or equal to a third preset environment temperature; the second control submodule is used for controlling the outdoor fan to operate according to a preset gear under the condition that the gear of the indoor fan is equal to or higher than the gear of the first indoor fan; a third control sub-module for controlling the outdoor fan of the air conditioner not to be operated in case that the indoor fan is not operated and the outdoor ambient temperature is higher than or equal to a second preset ambient temperature, wherein the second preset ambient temperature is less than or equal to the third preset ambient temperature,

the judging module is used for judging whether the gear of the indoor fan is higher than a second indoor fan gear or not after controlling the outdoor fan of the air conditioner to be not operated under the condition that the indoor fan is not operated and the outdoor environment temperature is higher than or equal to a second preset environment temperature, wherein the second indoor fan gear is higher than or equal to the first indoor fan gear; the first determining module is used for determining whether to start the outdoor fan to operate according to the non-operation time length of the outdoor fan and the temperature of the inner pipe if the gear of the indoor fan is not higher than the gear of the second indoor fan; the second determining module is used for determining whether to start the outdoor fan to operate or not according to the non-operation time length of the outdoor fan, the temperature of the inner pipe and the working state of the indoor fan if the gear of the indoor fan is higher than the gear of a second indoor fan and smaller than the gear of a third indoor fan, wherein the gear of the third indoor fan is higher than the gear of the second indoor fan; and the fourth control module is used for controlling the outdoor fan to start if the gear of the indoor fan is higher than the gear of the third indoor fan.

9. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the air conditioner according to any one of claims 1 to 7 when the program is executed.

10. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the control method of the air conditioner according to any one of claims 1 to 7.

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