An air conditioner and a control method, device and readable storage medium thereof

Abstract

The application provides an air conditioner, a control method and device thereof and a readable storage medium. The control method comprises the following steps: acquiring an inner ring temperature and a set temperature; determining a compressor frequency upper limit value according to the inner ring temperature, the set temperature and a compressor reference upper limit frequency; and controlling the compressor to operate at a frequency not exceeding the compressor frequency upper limit value. The application solves the problem that the technical solution in the related art cannot meet the indoor refrigeration demand as much as possible under the condition that the condensation is qualified.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to an air conditioner and its control method, apparatus and readable storage medium. Background Technology

[0002] When an air conditioner is cooling, the outlet air temperature is lower than the room temperature. When the room humidity is high and the outlet air temperature is too low, condensation is likely to occur, causing the air conditioner to drip water and affecting normal use. Therefore, air conditioner design and development must consider the reliability of condensation in high humidity scenarios, appropriately reduce the operating frequency, increase the outlet air temperature, and improve the condensation problem.

[0003] However, due to cost considerations, air conditioners generally do not have humidity sensors, so it is impossible to know whether the current environment is humid. If the reliability of condensation is considered, the highest allowable operating frequency at the current temperature is usually determined by whether condensation is qualified under high humidity conditions. This may result in the highest frequency being too low, which may lead to insufficient cooling capacity under high load conditions and complaints about poor performance. If only performance complaints are considered and the highest frequency is not limited, the operating frequency may be too high and the air outlet temperature may be too low, which may also cause condensation complaints.

[0004] Therefore, it is evident that the problem with the relevant technologies is that the technical solutions in these technologies cannot meet the indoor cooling needs as much as possible while ensuring that condensation is within acceptable limits. Summary of the Invention

[0005] The problem solved by this invention is that the technical solutions in related technologies cannot meet the indoor cooling needs as much as possible while ensuring that condensation is within acceptable limits.

[0006] To address the aforementioned problems, the primary objective of this invention is to provide a control method for an air conditioner.

[0007] A second objective of the present invention is to provide a control device for an air conditioner.

[0008] A third objective of this invention is to provide an air conditioner.

[0009] A fourth objective of this invention is to provide a readable storage medium.

[0010] To achieve the first objective of this invention, embodiments of this invention provide a control method for an air conditioner, the control method comprising:

[0011] Obtain the inner ring temperature and the set temperature;

[0012] The upper limit value of the compressor frequency is determined based on the inner ring temperature, the set temperature, and the compressor's reference upper limit frequency.

[0013] Control the compressor to operate at a frequency that does not exceed the upper limit of the compressor frequency.

[0014] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: The solution in this embodiment can determine the accurate upper limit of the compressor frequency based on the actual indoor temperature requirements, thereby satisfying the user's comfort experience while ensuring that condensation is qualified.

[0015] In one embodiment of the invention, the control method is performed when the air conditioner is operating in cooling mode.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the solution of this embodiment effectively improves the operating efficiency of the control method of the present invention.

[0017] In one embodiment of the present invention, before obtaining the inner ring temperature and the set temperature, the method further includes:

[0018] Obtain the outer ring temperature and set the wind speed;

[0019] Determine the compressor's baseline upper limit frequency based on the outer ring temperature and set fan speed.

[0020] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the solution of this embodiment can effectively reduce the humidity of the air in the room, thereby improving the reliability and stability of the subsequent control method.

[0021] In one embodiment of the present invention, determining the compressor frequency upper limit value based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes:

[0022] Subtract the set temperature from the inner ring temperature to determine the difference;

[0023] The upper limit of the compressor frequency is determined based on the difference and the compressor's reference upper limit frequency.

[0024] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the solution of this embodiment can accurately determine the cooling demand of the current environment, and thus accurately determine the upper limit of the compressor frequency, thereby improving the reliability and accuracy of the control method of the present invention.

[0025] In one embodiment of the present invention, determining the compressor frequency upper limit value based on the difference and the compressor reference upper limit frequency includes:

[0026] Compare the difference with a preset temperature threshold.

[0027] When the difference is greater than the preset temperature threshold, the compressor frequency upper limit = compressor reference upper limit frequency * a;

[0028] When the difference is less than or equal to the preset temperature threshold, the compressor frequency upper limit value = the compressor reference upper limit frequency;

[0029] or,

[0030] Determine the temperature range within which the difference falls;

[0031] When the difference falls within the first temperature range A1, the upper limit of the compressor frequency = the compressor reference upper limit frequency * a;

[0032] When the difference falls within the second temperature range A2, the compressor frequency upper limit value = the compressor reference upper limit frequency;

[0033] Where a is a constant; the left endpoint value of A1 is greater than or equal to the right endpoint value of A2.

[0034] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: The solution of this embodiment gradually increases the upper limit of the maximum operating frequency according to the cooling temperature, so as to achieve the desired effect under the premise of qualified condensation, which effectively improves the reliability of the control method of the present invention.

[0035] In one embodiment of the present invention, determining the compressor frequency upper limit value based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes:

[0036] The upper limit of the compressor frequency is determined periodically based on the inner ring temperature, the set temperature, and the compressor's reference upper limit frequency.

[0037] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: The solution of this embodiment can gradually increase the operating frequency of the compressor according to the actual situation, find the lowest operating frequency that meets the cooling effect, and effectively improve the reliability of condensation.

[0038] In one embodiment of the present invention, the upper limit of compressor frequency is ≤ max(compressor reference upper limit frequency * m, compressor reference upper limit frequency + n);

[0039] Where m and n are both constants.

[0040] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: In this embodiment, the maximum value of the compressor frequency limit is restricted, which effectively avoids the problem of condensation in the room caused by excessively high compressor frequency, and improves the reliability of the control method of the present invention.

[0041] To achieve the second objective of this invention, an embodiment of this invention provides a control device for an air conditioner, the control device comprising:

[0042] The detection module is used to acquire the inner ring temperature and the set temperature.

[0043] The calculation module is used to determine the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency.

[0044] The control module is used to control the compressor to operate at a frequency that does not exceed the upper limit of the compressor frequency.

[0045] The control device of the air conditioner in the embodiments of the present invention implements the steps of the control method of the air conditioner as in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner as in any embodiment of the present invention, which will not be repeated here.

[0046] To achieve the third objective of the present invention, an embodiment of the present invention provides an air conditioner, which includes: a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the control method of the air conditioner as described in any embodiment of the present invention.

[0047] The air conditioner of this invention implements the steps of the control method of the air conditioner as described in any embodiment of this invention, and therefore has all the beneficial effects of the control method of the air conditioner as described in any embodiment of this invention, which will not be repeated here.

[0048] To achieve the fourth objective of the present invention, embodiments of the present invention provide a readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of an air conditioner control method as described in any embodiment of the present invention.

[0049] The readable storage medium of this invention implements the steps of the air conditioner control method of any embodiment of this invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of this invention, which will not be repeated here. Attached Figure Description

[0050] Figure 1 This is a flowchart illustrating the steps of an air conditioner control method according to some embodiments of the present invention. Detailed Implementation

[0051] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] See Figure 1 This embodiment provides a control method for an air conditioner, the control method including:

[0053] S100: Obtains the inner ring temperature and set temperature;

[0054] S200: Determine the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency;

[0055] S300: Controls the compressor to operate at a frequency not exceeding the upper limit of the compressor frequency.

[0056] Furthermore, in S100, the inner ring temperature is the indoor ambient temperature, which is detected by a temperature sensor; the set temperature is the target temperature set by the user.

[0057] Furthermore, in S200, the reference upper limit frequency can be a preset frequency or a frequency value calculated based on relevant detection data; the cooling or heating demand in the room can be accurately determined based on the inner ring temperature and the set temperature; and the upper limit value of the compressor frequency can be determined based on the current environment based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency.

[0058] Furthermore, in S300, the compressor frequency upper limit is the highest upper limit frequency at which the compressor can operate, that is, controlling the compressor to operate at a frequency that does not exceed the compressor frequency upper limit.

[0059] In this embodiment, for example, when the air conditioner is in cooling mode, the reliability of condensation is considered first. That is, the compressor operates at the compressor's reference upper limit frequency as the highest operating frequency. It operates at a frequency that ensures qualified condensation for a period of time. During this time, the air in the room will be dehumidified and the humidity will be reduced. After a period of time, if the room temperature cannot reach the set temperature, it indicates that the current cooling capacity is insufficient. Then, the upper limit value of the compressor frequency is determined based on the inner ring temperature, the set temperature, and the compressor's reference upper limit frequency. At this time, the room air humidity has already decreased, making condensation less likely. Failure to reach the set temperature is more likely to cause user complaints. Determining the upper limit value of the compressor frequency based on the actual situation can meet the user's comfort needs.

[0060] Understandably, the solution in this embodiment can determine the accurate upper limit of the compressor frequency based on the actual indoor temperature requirements, thereby satisfying the user's comfort experience while ensuring that condensation is within acceptable limits.

[0061] Furthermore, in one specific embodiment, the control method is executed when the air conditioner is operating in cooling mode.

[0062] In this embodiment, when the air conditioner is in cooling mode, the outlet air temperature is lower than the room temperature. When the room humidity is high and the outlet air temperature is too low, condensation is likely to occur, causing the air conditioner to drip water and affecting normal use by the user. Therefore, the solution in this embodiment is suitable for cooling mode.

[0063] Understandably, the solution in this embodiment effectively improves the operating efficiency of the control method of the present invention.

[0064] Furthermore, in one specific embodiment, before obtaining the inner ring temperature and the set temperature, the method further includes:

[0065] Obtain the outer ring temperature and set the wind speed;

[0066] Determine the compressor's baseline upper limit frequency based on the outer ring temperature and set fan speed.

[0067] It should be noted that the outer ring temperature refers to the outdoor ambient temperature, which is measured by a temperature sensor; the set wind speed refers to the operating wind speed set by the user.

[0068] In this embodiment, the compressor's reference upper limit frequency is determined based on the outer ring temperature and the set fan speed. That is, after the cooling mode is turned on, the compressor's reference upper limit frequency that can meet the condensation qualification conditions under high humidity is determined based on the outer ring temperature and the set fan speed. In other words, when the compressor runs at a frequency less than or equal to the compressor's reference upper limit frequency, condensation will not occur under the current outer ring temperature and set fan speed. After running at the frequency that ensures condensation qualification for a period of time, the air in the room will be dehumidified. After the humidity is reduced, the subsequent control method is executed.

[0069] Understandably, the solution in this embodiment can effectively reduce the humidity of the air in the room, thereby improving the reliability and stability of the subsequent control method.

[0070] Furthermore, in one specific embodiment, determining the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes:

[0071] Subtract the set temperature from the inner ring temperature to determine the difference;

[0072] The upper limit of the compressor frequency is determined based on the difference and the compressor's reference upper limit frequency.

[0073] In this embodiment, the indoor cooling demand can be accurately determined by subtracting the set temperature from the inner ring temperature, thereby determining the upper limit of the compressor frequency. When the indoor cooling demand is large, the upper limit of the compressor frequency can be appropriately increased; when the indoor cooling demand is small, the upper limit of the compressor frequency can be kept unchanged.

[0074] Understandably, the solution in this embodiment can accurately determine the current cooling demand of the environment, and thus accurately determine the upper limit of the compressor frequency, thereby improving the reliability and accuracy of the control method of the present invention.

[0075] Furthermore, in one specific embodiment, determining the compressor frequency upper limit value based on the difference and the compressor reference upper limit frequency includes:

[0076] Compare the difference with a preset temperature threshold.

[0077] When the difference is greater than the preset temperature threshold, the compressor frequency upper limit = compressor reference upper limit frequency * a;

[0078] When the difference is less than or equal to the preset temperature threshold, the compressor frequency upper limit value = the compressor reference upper limit frequency;

[0079] or,

[0080] Determine the temperature range within which the difference falls;

[0081] When the difference falls within the first temperature range A1, the upper limit of the compressor frequency = the compressor reference upper limit frequency * a;

[0082] When the difference falls within the second temperature range A2, the compressor frequency upper limit value = the compressor reference upper limit frequency;

[0083] Where a is a constant; the left endpoint value of A1 is greater than or equal to the right endpoint value of A2.

[0084] Preferably, a is 1.1; the preset temperature threshold is 0.5℃.

[0085] In this embodiment, for example, when the difference is greater than 0.5℃, it indicates that the indoor cooling demand is large and the compressor frequency upper limit needs to be increased to improve the compressor's cooling efficiency. At this time, the compressor frequency upper limit = compressor reference upper limit frequency * 1.1; when the difference is less than or equal to 0.5℃, it indicates that the indoor cooling demand is small and the compressor frequency upper limit can be kept unchanged. The compressor frequency upper limit = compressor reference upper limit frequency.

[0086] Understandably, the solution in this embodiment gradually increases the upper limit of the maximum operating frequency based on the cooling temperature, in order to achieve the desired effect while ensuring that condensation is within acceptable limits, thereby effectively improving the reliability of the control method of the present invention.

[0087] Furthermore, in one specific embodiment, determining the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes:

[0088] The upper limit of the compressor frequency is determined periodically based on the inner ring temperature, the set temperature, and the compressor's reference upper limit frequency.

[0089] In this embodiment, for example, after the compressor is turned on, the upper limit value of the compressor frequency is determined every 30 minutes based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency. It should be noted that in a new cycle, the upper limit value of the compressor frequency in the new cycle is modified and determined based on the upper limit value of the compressor frequency in the previous cycle.

[0090] Understandably, the solution in this embodiment can gradually increase the operating frequency of the compressor according to the actual situation, find the lowest operating frequency that satisfies the cooling effect, and effectively improve the reliability of condensation.

[0091] Furthermore, in a specific embodiment, the upper limit of the compressor frequency is ≤ max(compressor reference upper limit frequency * m, compressor reference upper limit frequency + n);

[0092] Where m and n are both constants.

[0093] Preferably, m is 1.3 and n is 20Hz.

[0094] Understandably, in this embodiment, the maximum value of the compressor frequency is limited, which effectively avoids the problem of condensation in the room caused by excessively high compressor frequency, and improves the reliability of the control method of the present invention.

[0095] Furthermore, this embodiment provides a control device for an air conditioner, the control device including:

[0096] The detection module is used to acquire the inner ring temperature and the set temperature.

[0097] The calculation module is used to determine the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency.

[0098] The control module is used to control the compressor to operate at a frequency that does not exceed the upper limit of the compressor frequency.

[0099] The control device of the air conditioner in the embodiments of the present invention implements the steps of the control method of the air conditioner as in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner as in any embodiment of the present invention, which will not be repeated here.

[0100] Furthermore, this embodiment provides an air conditioner, which includes: a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the control method of the air conditioner as described in any embodiment of the present invention.

[0101] The air conditioner of this invention implements the steps of the control method of the air conditioner as described in any embodiment of this invention, and therefore has all the beneficial effects of the control method of the air conditioner as described in any embodiment of this invention, which will not be repeated here.

[0102] Furthermore, this embodiment provides a readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, they implement the steps of the air conditioner control method as described in any embodiment of the present invention.

[0103] The readable storage medium of this invention implements the steps of the air conditioner control method of any embodiment of this invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of this invention, which will not be repeated here.

[0104] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A control method for an air conditioner, characterized in that, The control method includes: Obtain the inner ring temperature and the set temperature; When the air conditioner is in cooling mode, the compressor operates at the compressor reference upper limit frequency as the highest operating frequency. After a period of time, if the room temperature cannot reach the set temperature, the compressor frequency upper limit value is determined based on the inner ring temperature, the set temperature and the compressor reference upper limit frequency. Control the compressor to operate at a frequency not exceeding the upper limit of the compressor frequency; The step of determining the compressor frequency upper limit value based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes: Subtract the set temperature from the inner ring temperature to determine the difference; The compressor frequency upper limit value is determined based on the difference and the compressor reference upper limit frequency; The step of determining the compressor frequency upper limit value based on the difference and the compressor reference upper limit frequency includes: The difference is compared with a preset temperature threshold. When the difference is greater than the preset temperature threshold, the compressor frequency upper limit value = the compressor reference upper limit frequency. a; When the difference is less than or equal to the preset temperature threshold, the compressor frequency upper limit value = the compressor reference upper limit frequency; or, Determine the temperature range within which the difference falls; When the difference falls within the first temperature range A1, the compressor frequency upper limit value equals the compressor reference upper limit frequency. a; When the difference falls within the second temperature range A2, the upper limit of the compressor frequency equals the upper limit of the compressor reference frequency. Where 'a' takes the value 1.1; the left endpoint of A1 is greater than or equal to the right endpoint of A2; Before acquiring the inner ring temperature and the set temperature, the control method further includes: Obtain the outer ring temperature and set the wind speed; The upper limit frequency of the compressor is determined based on the outer ring temperature and the set wind speed.

2. The control method according to claim 1, characterized in that, The step of determining the compressor frequency upper limit value based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency includes: The compressor frequency upper limit value is determined periodically based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency.

3. The control method according to claim 2, characterized in that, The compressor frequency upper limit value is ≤ max (the compressor reference upper limit frequency). m, the compressor's reference upper limit frequency + n); Where m and n are both constants.

4. A control device for an air conditioner, characterized in that, The control device includes: The detection module is used to acquire the inner ring temperature and the set temperature; The calculation module is used to determine the upper limit value of the compressor frequency based on the inner ring temperature, the set temperature, and the compressor reference upper limit frequency; A control module is provided for controlling the compressor to operate at a frequency not exceeding the upper limit of the compressor frequency.

5. An air conditioner, characterized in that, The air conditioner includes: a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the control method as described in any one of claims 1 to 3.

6. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the control method as described in any one of claims 1 to 3.

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