A method, system and air conditioner for controlling overshoot during heating.

Abstract

This invention discloses an air conditioning heating overshoot control method, system, and air conditioner, belonging to the field of air conditioning control technology. The method includes: during air conditioning heating operation, when the indoor temperature reaches the set temperature and the compressor stops, determining that a heating overshoot shutdown mode has been entered; controlling the indoor fan to reverse its rotation to disturb and disperse the hot air accumulated near the air conditioner inlet; during the fan reversal, adjusting the fan speed and rotation mode in stages according to the correspondence between real-time temperature and duration, and controlling the air guide plate to direct airflow downwards; when the indoor temperature remains below the recovery threshold for a preset duration, controlling the fan to resume forward operation and restarting the compressor. This invention, through proactive and intelligent airflow disturbance, effectively solves the problems of uneven room temperature and frequent start-stop caused by localized overheating, significantly improving heating comfort and energy efficiency, without increasing hardware costs and is easy to implement.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and in particular to an air conditioning heating overshoot control method, system and air conditioner. Background Technology

[0002] When an air conditioner is in heating mode during winter, it typically controls the compressor's start and stop based on the difference between the indoor temperature and the user-set temperature. A common control strategy is to use a temperature sensor installed near the air inlet of the air conditioner to detect the indoor temperature. When the detected temperature reaches or exceeds the user-set temperature, the control system determines that the indoor temperature has met the heating requirements and then stops the compressor to avoid overheating and energy waste.

[0003] However, in actual use, because the density of the hot air blown out of the air conditioner's outlet is relatively low, it tends to accumulate at the top of the room, forming a hot air stagnation zone centered on the indoor unit. At this time, the temperature sensor located at the air inlet will preferentially detect that this localized area has reached the set temperature, causing the control system to issue a shutdown command prematurely. But in reality, the temperature in areas far from the air conditioner, especially in the lower and middle parts of the room where people are active, remains significantly lower than the set temperature, and overall thermal comfort is not achieved. This frequent compressor start-stop phenomenon caused by localized temperature sensing deviation is commonly referred to as heating overshoot shutdown.

[0004] Heating overshoot shutdown not only reduces the actual heating effect and energy efficiency of the air conditioner, but also seriously affects the user experience. Users will notice that the air conditioner stops unexpectedly after running for a short time, and the room temperature does not rise evenly. They may easily misjudge it as a malfunction or insufficient performance of the air conditioner, and then frequently adjust the temperature setting or switch the operating mode, which will only exacerbate the instability of the system operation.

[0005] To address the technical problems caused by air conditioner overshoot and shutdown, this invention aims to propose an air conditioner heating overshoot control method that can effectively suppress heating overshoot without excessively increasing system complexity and cost, and promote rapid and uniform distribution of indoor heat. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an air conditioning heating overshoot control method, system and air conditioner, which aims to solve the heating overshoot problem caused by the accumulation of hot air, resulting in localized overheating of the air conditioner and the failure of the overall room temperature to reach the set value.

[0007] To achieve the above objectives, this application proposes an air conditioning heating overshoot control system, comprising:

[0008] An air inlet temperature sensor is installed at the air inlet of the air conditioner to detect the indoor temperature value Tn.

[0009] The control module, connected to the intake air temperature sensor, is configured as follows:

[0010] During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, a fan reversal command is generated.

[0011] After generating the fan reversal command, the indoor temperature value Tn is continuously monitored, and when the indoor temperature value Tn meets the preset recovery conditions, a heating recovery command is generated.

[0012] The execution module is connected to the control module, the indoor fan, and the compressor of the air conditioner, respectively, and is used for:

[0013] In response to the fan reversal command, the indoor fan is driven to run in reverse.

[0014] In response to the command to resume heating, the indoor fan is switched to forward operation, and the compressor is started to resume heating operation.

[0015] Preferably, the control module determines that the air conditioner enters the heating overshoot shutdown mode when the indoor temperature value Tn reaches the set temperature T0 and the compressor changes from running state to shutdown state.

[0016] Preferably, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, the user is notified of the air conditioner's entry into the heating overshoot state via the air conditioner's display device and / or a mobile terminal connected to the air conditioner, either in the form of an icon or voice message.

[0017] Preferably, the preset recovery condition is: the duration for which the indoor temperature value Tn is not higher than the set temperature T0 reaches a first preset duration t1.

[0018] Preferably, the control module is further configured to: after generating the fan reversal command and before generating the heating recovery command, perform graded adjustment based on the indoor temperature value Tn and the duration of the current heating overshoot shutdown mode.

[0019] Preferably, the graded adjustment includes:

[0020] If the duration is less than the second preset duration t2, the indoor fan is controlled to run in reverse at the first speed V1, and the air guide plate of the air conditioner is adjusted to a downward air guiding angle; if the duration reaches the second preset duration t2 but is less than the third preset duration t3, the indoor fan is controlled to run in reverse at the second speed V2, and the air guide plate is controlled to maintain downward air guiding, where V2>V1; if the duration reaches or exceeds the third preset duration t3, the indoor fan is controlled to operate in a periodic forward and reverse reciprocating manner, and the air guide plate is controlled to maintain downward air guiding.

[0021] Preferably, the periodic forward and reverse reciprocating rotation specifically includes: controlling the indoor fan to run in the reverse direction at a third speed V3 for a fourth preset time t4, and then running in the forward direction at the third speed V3 for a fifth preset time t5, and repeating this cycle, wherein t5≤t4.

[0022] On the other hand, according to embodiments of the present invention, a control method for air conditioning heating overshoot is also provided, applied to an air conditioning heating overshoot control system as described in the above technical solution, comprising the following steps:

[0023] Step 1: Obtain the indoor temperature value Tn;

[0024] Step 2: During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, drive the indoor fan of the air conditioner to rotate in the opposite direction.

[0025] Step 3: Continuously monitor the indoor temperature value Tn, and when the indoor temperature value Tn meets the preset recovery conditions, control the indoor fan to turn to forward operation and start the compressor to resume heating operation.

[0026] Preferably, after controlling the indoor fan to reverse its operation and before the preset recovery condition is met, the method further includes: adjusting the speed and / or direction of the indoor fan in stages according to the indoor temperature and the duration of the current heating overshoot shutdown mode.

[0027] On the other hand, according to an embodiment of the present invention, an air conditioner is also provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements an air conditioning heating overshoot control method as described in the above technical solution.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] To address the heating overshoot problem in air conditioners, where localized overheating and insufficient overall heating occur due to hot air accumulation during heating operation, this invention initiates an active intervention mechanism when the system detects an abnormal shutdown caused by localized temperatures reaching the target at the air inlet. This mechanism controls the indoor fan to reverse direction, actively disrupting and dispersing the localized hot air mass around the air inlet using the existing reverse function of the indoor fan. This efficiently and smoothly accelerates the uniform decrease of the overall indoor temperature. This not only fundamentally solves the problems of poor user thermal comfort and misunderstandings about the equipment caused by uneven room temperature, but also improves the overall energy efficiency and operational reliability of the system by reducing unnecessary compressor waiting and frequent start-stop cycles. This solution requires no additional hardware sensors; it relies solely on algorithm optimization. The overall solution is low-cost, with intelligent and highly adaptable control logic, making it easy to deploy and apply in various air conditioning products. Attached Figure Description

[0030] Figure 1 This is a system structure diagram of an air conditioning heating overshoot control system provided in an embodiment of the present invention;

[0031] Figure 2 The flowchart illustrates the steps of an air conditioning heating overshoot control method according to another embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] like Figure 1 As shown in the figure, an embodiment of the present invention proposes an air conditioning heating overshoot control system, comprising:

[0034] An air inlet temperature sensor is installed at the air inlet of the air conditioner to detect the indoor temperature value Tn.

[0035] The control module, connected to the intake air temperature sensor, is configured as follows:

[0036] During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, a fan reversal command is generated.

[0037] After generating the fan reversal command, the indoor temperature value Tn is continuously monitored, and when the indoor temperature value Tn meets the preset recovery conditions, a heating recovery command is generated.

[0038] The execution module is connected to the control module, the indoor fan, and the compressor of the air conditioner, respectively, and is used for:

[0039] In response to the fan reversal command, the indoor fan is driven to run in reverse.

[0040] In response to the command to resume heating, the indoor fan is switched to forward operation, and the compressor is started to resume heating operation.

[0041] To further enhance the user experience, the control module can also generate a prompt command when it determines that the air conditioner has entered the heating overshoot shutdown mode. Based on this, the execution module will issue a prompt to the user, in the form of an icon or voice, that the air conditioner has entered the heating overshoot state, through the air conditioner's own display device or a mobile terminal connected to it, to avoid the user misinterpreting it as a malfunction.

[0042] The complete process of the control method of the present invention will be explained in detail below with reference to a typical application scenario.

[0043] The user turns on the air conditioner in heating mode and sets a target temperature T0, such as 24℃. The air conditioning system starts, the compressor begins to work, and the indoor fan runs in the forward direction, blowing hot air into the room. At this time, the intake air temperature sensor samples at a set period and reports the indoor temperature value Tn to the control module in real time.

[0044] As operation continues, hot air, due to its lower density, rises and forms a localized high-temperature zone near the air inlet of the indoor unit. When the control module detects that the reported temperature Tn reaches or exceeds T0, and the compressor subsequently stops, it recognizes that the room is not warm overall, but rather that a heating overshoot has occurred, causing a shutdown. At this point, a traditional air conditioner would completely stop working, passively waiting for the room temperature to drop naturally. However, this invention immediately activates an active intervention mechanism: the control module immediately generates a fan reversal command, and the execution module drives the indoor fan to immediately begin reversing its operation. The fan reversal quickly disrupts the hot air mass accumulated around the air inlet, disrupting the local airflow and accelerating the diffusion of heat to other areas of the room.

[0045] After the fan starts in reverse, the control module uses the restoration of the set temperature T0 as the judgment benchmark and starts the overshoot duration timer to adaptively adjust the speed and / or direction of the indoor fan in stages.

[0046] If the indoor temperature Tn remains higher than T0, and the duration t is less than the second preset duration t2, the system enters the first stage. At this time, the control module controls the indoor fan to rotate in the opposite direction at a lower first speed V1, for example, 180 revolutions per minute, while simultaneously controlling the air guide vane to rotate downwards to a specific angle, entering "carpet wind" mode. This stage aims to gently break up the stratification of hot air with low noise levels, initiating the initial diffusion of heat. The second preset duration t2 can be set from 1 to 6 minutes depending on the actual situation.

[0047] If, after the first stage of disturbance, Tn remains higher than T0, and the duration t reaches t2 but is less than the third preset duration t3, the system enters the second stage. The control module increases the indoor fan speed to a higher second speed V2, for example, 400 revolutions per minute, and continues to rotate in the opposite direction, while the air guide plate maintains a downward airflow state. The enhanced airflow can more effectively agitate and transport the stagnant hot air. The third preset duration t3 typically ranges from 6 to 10 minutes.

[0048] If the hot air stagnation is very persistent, and the duration t reaches or exceeds t3, the system activates the third stage, namely the deep temperature equalization mode. The control module controls the indoor fan to rotate in both directions at a higher third speed V3, for example, 600 revolutions per minute. Specifically, the fan can be controlled to first rotate in the reverse direction at a medium speed for t4, then rotate in the forward direction for t5, and so on, where t5 is no greater than t4, and the values ​​of t5 and t6 can be adjusted within 0 to 2 minutes. This periodic change in airflow direction generates complex turbulence, while the air deflector continuously guides the airflow downwards. The third preset duration t3 can range from 10 to 13 minutes in this stage.

[0049] At any stage of the aforementioned intelligent disturbance, the control module consistently executes the logic for resuming heating in parallel. Its preset recovery condition is: the indoor temperature value Tn drops to no higher than T0, and this state is maintained for a first preset duration t1. The first preset duration t1 is preferably 1 minute, and its value can be adjusted within a range of 0 to 3 minutes. This dual condition ensures that the system only determines that it can exit the overshoot state after the indoor temperature has indeed and stably decreased.

[0050] Once the recovery condition is met, the control module immediately generates a command to resume heating. The execution module responds to this command, driving the indoor fan to stop its current operating mode and switch back to the normal forward rotation required for heating, while simultaneously restarting the compressor. The air conditioner thus seamlessly returns to its normal heating operation mode, continuing to provide balanced heating to the room.

[0051] In summary, by identifying the heating overshoot state, actively controlling the fan to reverse, and combining a phased adaptive disturbance strategy, this invention can efficiently and quietly promote the uniform distribution of indoor heat, thereby quickly and smoothly exiting the overshoot shutdown state. While significantly improving the user's thermal comfort experience, it avoids the ineffective and frequent start-stop of the compressor, thus balancing energy saving and equipment reliability.

[0052] like Figure 2 As shown, on the other hand, embodiments of the present invention also provide a control method for air conditioning heating overshoot, applied to an air conditioning heating overshoot control system as described in the above technical solution, comprising the following steps:

[0053] Step 1: Obtain the indoor temperature value Tn;

[0054] Step 2: During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, drive the indoor fan of the air conditioner to rotate in the opposite direction.

[0055] Step 3: Continuously monitor the indoor temperature value Tn, and when the indoor temperature value Tn meets the preset recovery conditions, control the indoor fan to turn to forward operation and start the compressor to resume heating operation.

[0056] In this embodiment, the air conditioner starts in heating mode, and the indoor temperature sensor collects and reports the indoor temperature value Tn in real time according to a set cycle. The control module continuously compares Tn with the user-set target temperature T0 and controls the compressor and indoor fan to operate normally until the indoor temperature reaches the set condition. When the control module detects that Tn ≥ T0 and the compressor stops running, it determines that the air conditioner has entered the heating overshoot shutdown mode. Subsequently, the control module generates a fan reversal command, driving the indoor fan to switch from forward operation to reverse operation to actively disturb the hot air accumulated near the air conditioner inlet. During this process, status prompts can also be sent to the user through the air conditioner display screen or mobile terminal to improve the transparency of the interaction.

[0057] During the reverse operation of the fan, the control module continuously monitors Tn and executes a graded adjustment strategy based on the temperature and the current overshoot duration t:

[0058] If Tn>T0 and t is less than the second preset duration t2, then the fan is controlled to reverse at low speed with the first rotation speed V1, and the air guide plate is controlled to guide the air downward.

[0059] If Tn>T0 and t reaches t2 but is less than the third preset duration t3, then the fan speed will be increased to the second speed V2 and the fan will continue to reverse.

[0060] If Tn>T0 and t reaches or exceeds t3, then control the fan to rotate periodically in both directions at the third speed V3, and keep the air guide plate in a depressed state.

[0061] Throughout the disturbance process, the control module synchronously determines whether the recovery condition is met: that is, the duration for which Tn is not higher than T0 reaches the first preset duration t1. Once met, the control module immediately controls the indoor fan to switch to forward operation and restarts the compressor, restoring the air conditioner to normal heating mode.

[0062] This method effectively solves the problems of uneven room temperature and frequent start-stop caused by heating overshoot through full-process control of identification, reversal, graded disturbance and intelligent recovery, without increasing hardware costs, and significantly improves the comfort, energy efficiency and user experience of air conditioning heating.

[0063] According to another embodiment of the present invention, an air conditioner is also provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements an air conditioning heating overshoot control method as described in the above technical solutions. By running this program, the air conditioner can automatically execute a complete control process including overshoot identification, fan reversal, and intelligent recovery, thereby achieving the same positive technical effects as the above method embodiments, including effectively balancing room temperature, reducing ineffective compressor start-stop cycles, and improving user comfort. Other technical features and effects of this embodiment are the same as those of the aforementioned system and method embodiments, and will not be repeated here.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An air conditioning heating overshoot control system, characterized in that, include: An air inlet temperature sensor is installed at the air inlet of the air conditioner to detect the indoor temperature value Tn. The control module, connected to the intake air temperature sensor, is configured as follows: During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, a fan reversal command is generated. After generating the fan reversal command, the indoor temperature value Tn is continuously monitored, and when the indoor temperature value Tn meets the preset recovery conditions, a heating recovery command is generated. The execution module is connected to the control module, the indoor fan, and the compressor of the air conditioner, respectively, and is used for: In response to the fan reversal command, the indoor fan is driven to run in reverse. In response to the command to resume heating, the indoor fan is switched to forward operation, and the compressor is started to resume heating operation.

2. The air conditioning heating overshoot control system according to claim 1, characterized in that, The control module determines that the air conditioner enters the heating overshoot shutdown mode when the indoor temperature value Tn reaches the set temperature T0 and the compressor changes from running state to shutdown state.

3. The air conditioning heating overshoot control system according to claim 2, characterized in that, When the system determines that it has entered the heating overshoot shutdown mode, the system will send a notification message to the user via the air conditioner's display device and / or a mobile terminal connected to the air conditioner, either in the form of an icon or voice, indicating that the air conditioner has entered the heating overshoot state.

4. An air conditioning heating overshoot control system according to any one of claims 1 to 3, characterized in that, The preset recovery condition is: the indoor temperature value Tn remains no higher than the set temperature T0 for a duration of a first preset duration t1.

5. The air conditioning heating overshoot control system according to claim 1, characterized in that, The control module is also configured to: after generating the fan reversal command and before generating the heating recovery command, perform graded adjustment based on the indoor temperature value Tn and the duration of the current heating overshoot shutdown mode.

6. The air conditioning heating overshoot control system according to claim 5, characterized in that, The graded adjustment includes: If the duration is less than the second preset duration t2, the indoor fan is controlled to run in reverse at the first speed V1, and the air guide plate of the air conditioner is adjusted to a downward air guiding angle; if the duration reaches the second preset duration t2 but is less than the third preset duration t3, the indoor fan is controlled to run in reverse at the second speed V2, and the air guide plate is controlled to maintain downward air guiding, where V2>V1; if the duration reaches or exceeds the third preset duration t3, the indoor fan is controlled to operate in a periodic forward and reverse reciprocating manner, and the air guide plate is controlled to maintain downward air guiding.

7. The air conditioning heating overshoot control system according to claim 6, characterized in that, The periodic forward and reverse reciprocating rotation specifically includes: controlling the indoor fan to run in the reverse direction at a third speed V3 for a fourth preset time t4, and then running in the forward direction at the third speed V3 for a fifth preset time t5, and repeating this cycle, where t5≤t4.

8. A method for controlling air conditioning heating overshoot, applied to an air conditioning heating overshoot control system as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Step 1: Obtain the indoor temperature value Tn; Step 2: During the heating operation of the air conditioner, when it is determined that the air conditioner has entered the heating overshoot shutdown mode, drive the indoor fan of the air conditioner to rotate in the opposite direction. Step 3: Continuously monitor the indoor temperature value Tn, and when the indoor temperature value Tn meets the preset recovery conditions, control the indoor fan to turn to forward operation and start the compressor to resume heating operation.

9. The air conditioning heating overshoot control method according to claim 8, characterized in that, After controlling the indoor fan to reverse its operation and before the preset recovery condition is met, the method further includes: adjusting the speed and / or direction of the indoor fan in stages according to the indoor temperature and the duration of the current heating overshoot shutdown mode.

10. An air conditioner, characterized in that, include: The system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements an air conditioning heating overshoot control method as described in any one of claims 8 to 9.

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