CN109556248B - Operation mode control method for air conditioning system - Google Patents
Operation mode control method for air conditioning system Download PDFInfo
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- CN109556248B CN109556248B CN201811314544.XA CN201811314544A CN109556248B CN 109556248 B CN109556248 B CN 109556248B CN 201811314544 A CN201811314544 A CN 201811314544A CN 109556248 B CN109556248 B CN 109556248B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Abstract
The invention relates to the technical field of air-conditioning system control, and particularly provides an operation mode control method of an air-conditioning system, aiming at solving the technical problem of accurately selecting an optimal operation mode suitable for the current environment from air-conditioning operation modes. For this purpose, the method provided by the invention mainly comprises the following steps: comparing the current outdoor temperature with an outdoor temperature threshold value to obtain a first comparison result; comparing the current indoor return air temperature with the indoor temperature set value to obtain a second comparison result; judging whether the current indoor return air humidity is compared with the indoor humidity set value or not, and if so, acquiring a first air-conditioning operation mode of the air-conditioning system according to the comparison result; and if not, acquiring a first air-conditioning operation mode of the air-conditioning system according to the first comparison result and the second comparison result. Based on the steps, the invention can accurately obtain the optimal operation mode of the indoor unit suitable for the indoor environment according to the indoor environment and the outdoor environment without manually adjusting the operation mode of the indoor unit by a user.
Description
Technical Field
The invention relates to the technical field of air conditioning system control, in particular to an operation mode control method of an air conditioning system.
Background
An Air Conditioner (Air Conditioner) is a device for regulating and controlling environmental parameters such as temperature and humidity of ambient Air in a building, the operation modes of the Air Conditioner mainly comprise a cooling mode, a heating mode, a ventilation mode, a dehumidification mode and other operation modes, and a user can select any one operation mode on an Air Conditioner control device (such as a remote controller of the Air Conditioner) to control the operation of the Air Conditioner.
However, the current user often determines which operation mode to select according to the sensory experience, and cannot accurately select the optimal operation mode suitable for the current environment.
Disclosure of Invention
The technical problem of how to accurately select the optimal operation mode suitable for the current environment from the air conditioner operation modes is solved. To this end, the present invention provides an operation mode control method of an air conditioning system, which mainly comprises the following steps:
comparing the current outdoor temperature with a preset outdoor temperature threshold value to obtain a first comparison result;
comparing the current indoor return air temperature with a preset indoor temperature set value to obtain a second comparison result;
judging whether to continuously compare the current indoor return air humidity with a preset indoor humidity set value according to the first comparison result and the second comparison result,
if so, acquiring a first air conditioner operation mode of the air conditioning system according to a comparison result of the current indoor return air humidity and the indoor humidity set value;
and if not, acquiring a first air conditioner operation mode of the air conditioning system according to the first comparison result and the second comparison result.
Further, an optional technical solution provided by the present invention is:
the outdoor temperature threshold comprises a first temperature threshold T1 and a second temperature threshold T2 and T1 < T2; the step of judging whether to continue comparing the current indoor return air humidity with the preset indoor humidity set value according to the first comparison result and the second comparison result specifically comprises the following steps of:
if Tao is more than or equal to T1 and less than or equal to T2 and Tar is less than Tset, continuously comparing the current indoor return air humidity with the indoor humidity set value; otherwise, comparing the current indoor return air humidity with the indoor humidity set value;
wherein, Tao, Tar and Tset are current outdoor temperature, current indoor return air temperature and indoor temperature set value respectively.
Further, an optional technical solution provided by the present invention is:
the step of obtaining the first air conditioner operation mode of the air conditioning system according to the first comparison result and the second comparison result specifically includes:
if Tao < T1 and Tar > Tset, the first air-conditioning operation mode is a standby mode;
if Tao is less than T1 and Tar is less than or equal to Tset, the first air-conditioning operation mode is a heating mode.
Further, an optional technical solution provided by the present invention is:
the step of obtaining a first air-conditioning operation mode of the air-conditioning system according to the first comparison result and the second comparison result further includes:
if Tao > T2 and Tar < Tset, the first air conditioning operation mode is a ventilation mode;
if Tao is greater than T2 and Tar is greater than or equal to Tset, the first air-conditioning operation mode is a cooling mode.
Further, an optional technical solution provided by the present invention is:
the step of obtaining the first air-conditioning operation mode of the air-conditioning system according to the first comparison result and the second comparison result further includes:
if Tao is more than or equal to T1 and less than or equal to T2 and Tar is more than or equal to Tset, the first air-conditioning operation mode is a cooling mode.
Further, an optional technical solution provided by the present invention is:
the step of obtaining the first air-conditioning operation mode of the air-conditioning system according to the comparison result of the current indoor return air humidity and the indoor humidity set value specifically comprises the following steps:
if Har < Harset, the first air conditioner operation mode is a standby mode;
if Har is greater than or equal to Harset, the first air-conditioning operation mode is a dehumidification mode;
and Har and Hatset are respectively set values of the current indoor return air humidity and the indoor humidity.
Further, an optional technical solution provided by the present invention is:
the air conditioning system comprises a fresh air system, and the operation mode control method further comprises the following steps:
judging whether a starting instruction of the fresh air system is received or not,
if the starting instruction is not received, taking the first air conditioner operation mode as the current operation mode of the air conditioning system;
if the starting instruction is received, acquiring a second air conditioner operation mode of the air conditioning system according to the outdoor environment state, and
and selecting the operation mode with higher priority from the first air-conditioning operation mode and the second air-conditioning operation mode as the current operation mode of the air-conditioning system according to the preset priority sequence of the operation modes.
Further, an optional technical solution provided by the present invention is:
the outdoor temperature threshold further includes a third temperature threshold T3 and T3 < T1, and the step of "obtaining a second air-conditioning operation mode of the air-conditioning system according to the outdoor environmental status" specifically includes:
if T3 < Tao < T1, the second air-conditioning operation mode is a ventilation mode;
if Tao is less than or equal to T3, the second air-conditioning operation mode is a heating mode;
if Tao > T2, the second air conditioning operation mode is a cooling mode.
Further, an optional technical solution provided by the present invention is:
the step of "acquiring a second air-conditioning operation mode of the air-conditioning system according to the outdoor environmental status" further includes:
if Tao is more than or equal to T1 and less than or equal to T2 and Hao is more than or equal to H, the second air-conditioning operation mode is a dehumidification mode;
if Tao is more than or equal to T1 and less than or equal to T2 and Hao is less than H, the second air-conditioning operation mode is a ventilation mode;
wherein Hao and H are the current outdoor humidity and the preset outdoor humidity threshold, respectively.
Further, an optional technical solution provided by the present invention is:
the operating mode priority order comprises a first priority order and a second priority order,
the first priority order includes a heating mode, a ventilation mode, and a standby mode and the priority of the heating mode, the ventilation mode, and the standby mode is sequentially lowered;
the second priority order includes a cooling mode, a dehumidifying mode, a ventilating mode, and a standby mode and the cooling mode, the dehumidifying mode, the ventilating mode, and the standby mode are sequentially lower in priority.
Compared with the closest prior art, the technical scheme at least has the following beneficial effects:
1. the invention provides an operation mode control method of an air conditioning system, which mainly comprises the following steps: comparing the current outdoor temperature with a preset outdoor temperature threshold value to obtain a first comparison result; comparing the current indoor return air temperature with a preset indoor temperature set value to obtain a second comparison result; judging whether to continue to compare the current indoor return air humidity with a preset indoor humidity set value or not according to the first comparison result and the second comparison result, and if so, acquiring a first air-conditioning operation mode of the air-conditioning system according to the comparison result of the current indoor return air humidity and the indoor humidity set value; and if not, acquiring a first air-conditioning operation mode of the air-conditioning system according to the first comparison result and the second comparison result. The indoor temperature setting value and the indoor humidity setting value may be data input by a user or data generated by the air conditioning system according to the current indoor environment.
Based on the steps, the optimal operation mode suitable for the current indoor environment can be accurately obtained according to the current indoor environment and the current outdoor environment, and a user does not need to manually adjust the operation mode of the air conditioning system.
2. Under the condition that the air conditioning system comprises a fresh air system, the operation mode control method of the air conditioning system provided by the invention can further comprise the following steps: judging whether a starting instruction of the fresh air system is received, and if the starting instruction is not received, taking the first air conditioner operation mode as the current operation mode of the air conditioner system; and if the starting instruction is received, acquiring a second air conditioner operation mode of the air conditioning system according to the outdoor environment state, and selecting the operation mode with higher priority from the first air conditioner operation mode and the second air conditioner operation mode as the current operation mode of the air conditioning system according to the preset priority sequence of the operation modes.
Based on the steps, the indoor demand (the first air conditioner operation mode represents the demand of the current indoor environment on the indoor unit of the air conditioning system) and the fresh air demand (the second air conditioner operation mode represents the demand of the current indoor environment on the fresh air system) can be simultaneously considered, and the optimal operation mode suitable for the current indoor environment is obtained.
Drawings
FIG. 1 is a schematic diagram of the main steps of an operation mode control method of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the main steps of a first air conditioner operation mode acquisition method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the main steps of another method for controlling the operation mode of an air conditioning system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of main steps of a second air conditioner operation mode acquisition method according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The following describes a method for controlling an operation mode of an air conditioning system according to a first embodiment of the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 illustrates the main steps of an operation mode control method of an air conditioning system in the present embodiment, wherein the operation mode of the air conditioning system refers to an operation mode of an indoor unit, which mainly includes a heating mode, a cooling mode, a dehumidifying mode, a ventilating mode, and a standby mode. As shown in fig. 1, the operation mode of the air conditioning system may be controlled according to the following steps in the present embodiment:
step S101: and comparing the current outdoor temperature with a preset outdoor temperature threshold value to obtain a first comparison result. Specifically, the present embodiment may detect the current outdoor temperature using a temperature sensor that is set outdoors in advance. Optionally, when the air conditioning system further comprises a fresh air system, the current outdoor temperature can be detected by using a temperature sensor which is arranged in the fresh air pipeline in advance.
Step S102: and comparing the current indoor return air temperature with a preset indoor temperature set value to obtain a second comparison result. In this embodiment, the indoor temperature setting value may be temperature data input by a user, or may be temperature data generated by the air conditioning system according to the current indoor environment.
Step S103: and judging whether to compare the current indoor return air humidity with a preset indoor humidity set value according to the first comparison result and the second comparison result.
Specifically, if it is determined that the comparison between the current indoor return air humidity and the preset indoor humidity set value is necessary, the process proceeds to step S104, and if it is determined that the comparison between the current indoor return air humidity and the preset indoor humidity set value is unnecessary, the process proceeds to step S105. In this embodiment, the indoor humidity setting value may be humidity data input by a user, or humidity data generated by the air conditioning system according to the current indoor environment.
In this embodiment, whether to compare the current indoor return air humidity with the preset indoor humidity set value may be determined according to the following steps: if Tao is more than or equal to T1 and less than or equal to T2 and Tar is less than Tset, continuously comparing the current indoor return air humidity with the indoor humidity set value; otherwise, the current indoor return air humidity and the indoor humidity set value are not compared. Where T1 and T2 are the first and second temperature thresholds, respectively, and T1 < T2, and Tao, Tar, and Tset are the current outdoor temperature, the current indoor return air temperature, and the indoor temperature set point, respectively.
Step S104: and acquiring a first air conditioner operation mode of the air conditioning system according to the comparison result of the current indoor return air humidity and the indoor humidity set value.
Specifically, in the present embodiment, the first air conditioning operation mode of the air conditioning system may be obtained according to the following steps:
if Har < Harset, the first air conditioner operation mode is a standby mode; if Har is greater than or equal to Harset, the first air-conditioning operation mode is a dehumidification mode; har and Harset are respectively set values of current indoor return air humidity and indoor humidity.
Step S105: and acquiring a first air conditioner operation mode of the air conditioning system according to the first comparison result and the second comparison result.
Specifically, in the present embodiment, the first air conditioning operation mode of the air conditioning system may be obtained according to the following steps:
if Tao < T1 and Tar > Tset, the first air-conditioning operation mode is a standby mode; if Tao is less than T1 and Tar is less than or equal to Tset, the first air-conditioning operation mode is a heating mode; if Tao > T2 and Tar < Tset, the first air-conditioning operation mode is a ventilation mode; if Tao is greater than T2 and Tar is greater than or equal to Tset, the first air-conditioning operation mode is a refrigeration mode; if Tao is greater than or equal to T1 and less than or equal to T2 and Tar is greater than or equal to Tset, the first air-conditioning operation mode is the cooling mode.
Next, an operation mode control method of the air conditioning system shown in fig. 1 will be described, taking as an example that the first temperature threshold T1 is 15 ° and the second temperature threshold T1 is 26 °. The set parameters Tao, Tar, Tset, Har and Harset respectively represent the current outdoor temperature, the current indoor return air temperature, the indoor temperature set value, the current indoor return air humidity and the indoor humidity set value.
Referring to fig. 2, fig. 2 illustrates the main steps of a second air conditioner operation mode acquisition method in the present embodiment. As shown in fig. 2, in this embodiment, the first air conditioning operation mode of the indoor unit in the air conditioning system may be obtained according to the following steps:
step S201: it is determined whether Tao is less than 15. Specifically, if the current outdoor temperature Tao is less than 15 °, go to step S202; if the current outdoor temperature Tao is not less than 15 °, the process goes to step S205.
Step S202: and judging whether Tar is larger than Tset or not. Specifically, if the current indoor return air temperature Tar is greater than Tset, go to step S203; if the current indoor return air temperature Tar is less than or equal to Tset, go to step S204.
Step S203: the first air-conditioning operation mode is a standby mode. Specifically, after the first air-conditioning operation mode is selected to be the standby mode, the indoor unit is controlled to execute the related operation of the standby mode.
Step S204: the first air-conditioning operation mode is a heating mode. Specifically, when the first air-conditioning operation mode is selected to be the heating mode, the indoor unit is controlled to execute the relevant operation of the heating mode.
Step S205: it is determined whether Tao is greater than 26. Specifically, if the current outdoor temperature Tao is greater than 26 °, go to step S206; if the current outdoor temperature Tao is less than or equal to 26 °, go to step S209.
Step S206: and judging whether Tar is smaller than Tset. Specifically, if the current indoor return air temperature Tar is less than Tset, go to step S207; if the current indoor return air temperature Tar is not less than Tset, go to step S208.
Step S207: the first air-conditioning operation mode is a ventilation mode. Specifically, when the first air-conditioning operation mode is selected to be the ventilation mode, the indoor unit is controlled to perform the related operation of the ventilation mode.
Step S208: the first air-conditioning operation mode is a cooling mode. Specifically, after the first air-conditioning operation mode is selected to be the cooling mode, the indoor unit is controlled to execute relevant operations of the cooling mode.
Step S209: and judging whether Tar is greater than or equal to Tset. Specifically, if the current indoor return air temperature Tar is greater than or equal to Tset, the process goes to step S208, that is, the indoor unit is controlled to execute the relevant operation of the refrigeration mode; if the current indoor return air temperature Tar is less than Tset, the process goes to step S210.
Step S210: and judging whether Har is smaller than Harset. Specifically, if the current indoor return air humidity Har is less than Harset, the process goes to step S203, that is, the indoor unit is controlled to execute the relevant operation of the standby mode; if the current indoor return air humidity Har is greater than or equal to Harset, the process goes to step S211.
Step S211: the first air-conditioning operation mode is a dehumidification mode. Specifically, after the first air-conditioning operation mode is selected to be the dehumidification mode, the indoor unit is controlled to perform related operations of the dehumidification mode.
Based on the steps, the invention can accurately obtain the optimal operation mode of the indoor unit suitable for the current indoor environment according to the current indoor environment and the current outdoor environment without manually adjusting the operation mode of the indoor unit by a user.
Further, when the air conditioning system includes a fresh air system, the operation mode of the indoor unit of the air conditioning system may be controlled according to the operation mode control method of the air conditioning system shown in fig. 3, specifically:
step S301: and judging whether a starting instruction of the fresh air system is received.
Specifically, if a start instruction of the fresh air system is received, go to step S302; if the start instruction of the fresh air system is not received, go to step S304.
The starting instruction of the fresh air system in this embodiment may be an instruction currently input by a user, or an instruction generated by the fresh air system according to the current indoor air quality.
Step S302: and acquiring a second air-conditioning operation mode of the air-conditioning system according to the outdoor environment state. The outdoor environment state may include, among other things, a current outdoor temperature Tao and a current outdoor humidity Hao. Optionally, the present embodiment may detect the current outdoor humidity by using a humidity sensor preset in the fresh air duct.
Specifically, in this embodiment, the second air conditioning operation mode of the air conditioning system may be obtained according to the following steps:
if T3 < Tao < T1, the second air-conditioning operation mode is a ventilation mode; if Tao is less than or equal to T3, the second air-conditioning operation mode is a heating mode; if Tao is greater than T2, the second air-conditioning operation mode is a cooling mode; if Tao is more than or equal to T1 and less than or equal to T2 and Hao is more than or equal to H, the second air-conditioning operation mode is a dehumidification mode; if Tao is greater than or equal to T1 and less than or equal to T2 and Hao is less than H, the second air conditioning operation mode is the ventilation mode. Where H is a preset outdoor humidity threshold (e.g., 13g/kg), T3 is a third temperature threshold and T3 < T1 < T2.
With continued reference to fig. 4, fig. 4 schematically shows the main steps of the second air conditioner operation mode acquisition method in the present embodiment. As shown in fig. 4, in this embodiment, the second air conditioning operation mode of the indoor unit in the air conditioning system may be obtained according to the following steps:
step S3020: and judging whether a starting instruction of the fresh air system is received.
Specifically, if a start instruction of the fresh air system is received, go to step S3021; if the start instruction of the fresh air system is not received, the process goes to step S3029.
Step S3021: it is determined whether Tao is less than 15. Specifically, if the current outdoor temperature Tao is less than 15 °, go to step S3022; and if the current outdoor temperature Tao is more than or equal to 15 degrees, turning to the step S3025.
Step S3022: it is determined whether Tao is greater than 10. Specifically, if the current outdoor temperature Tao is greater than 10 °, go to step S3023; and if the current outdoor temperature Tao is less than or equal to 10 degrees, turning to the step S3024.
Step S3023: the second air conditioning operation mode is a ventilation mode. Specifically, when the second air-conditioning operation mode is selected to be the ventilation mode, the indoor unit is controlled to perform the related operation of the ventilation mode.
Step S3024: the second air-conditioning operation mode is a heating mode. Specifically, when the second air-conditioning operation mode is selected to be the heating mode, the indoor unit is controlled to execute the relevant operation of the heating mode.
Step S3025: it is determined whether Tao is greater than 26. Specifically, if the current outdoor temperature Tao is greater than 26 °, go to step S3026; and if the current outdoor temperature Tao is less than or equal to 26 degrees, turning to step S3027.
Step S3026: the second air conditioning operation mode is a cooling mode. Specifically, after the second air-conditioning operation mode is selected to be the cooling mode, the indoor unit is controlled to execute relevant operations of the cooling mode.
Step S3027: and judging whether Hao is smaller than H. Specifically, if the current outdoor humidity Hao is less than H, go to step S3023, i.e., control the indoor unit to perform the related operation of the ventilation mode; if the current outdoor humidity Hao is not less than H, go to step S3028.
Step S3028: the second air-conditioning operation mode is a dehumidification mode. Specifically, after the second air-conditioning operation mode is selected to be the dehumidification mode, the indoor unit is controlled to perform related operations of the dehumidification mode.
Step S3029: the second air-conditioning operation mode is a standby mode. Specifically, after the second air-conditioning operation mode is selected to be the standby mode, the indoor unit is controlled to execute the related operation of the standby mode.
Step S303: and selecting the operation mode with higher priority from the first air-conditioning operation mode and the second air-conditioning operation mode as the current operation mode of the air-conditioning system according to the preset priority sequence of the operation modes.
The operation mode priority order in this embodiment may include a first priority order and a second priority order, wherein the first priority order may include a heating mode, a ventilation mode, and a standby mode and the priority of the heating mode, the ventilation mode, and the standby mode is sequentially lowered, and the second priority order may include a cooling mode, a dehumidification mode, a ventilation mode, and a standby mode and the priority of the cooling mode, the dehumidification mode, the ventilation mode, and the standby mode is sequentially lowered.
Referring back to fig. 2 and 4, assuming that the first air-conditioning operation mode is the standby mode and the second air-conditioning operation mode is the heating mode in the case where the current outdoor temperature Tao is less than 15 °, the priority of the heating mode may be obtained according to the first priority order and is greater than that of the standby mode, so that the heating mode is selected as the current operation mode of the air-conditioning system, and the air-conditioning system is controlled to perform the operation related to the heating mode.
Step S304: the first air conditioning operation mode is taken as the current operation mode of the air conditioning system.
Based on the steps, the indoor demand (the first air conditioner operation mode represents the demand of the current indoor environment on the indoor unit in the air conditioning system) and the fresh air demand (the second air conditioner operation mode represents the demand of the current indoor environment on the fresh air system) can be simultaneously considered, and the optimal indoor unit operation mode suitable for the current indoor environment is obtained.
Although the foregoing embodiments describe the steps in the above sequential order, those skilled in the art will understand that, in order to achieve the effect of the present embodiments, the steps may not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverse order, and these simple variations are within the scope of the present invention.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (9)
1. An operation mode control method of an air conditioning system, characterized by comprising:
comparing the current outdoor temperature with a preset outdoor temperature threshold value to obtain a first comparison result;
comparing the current indoor return air temperature with a preset indoor temperature set value to obtain a second comparison result;
judging whether to continuously compare the current indoor return air humidity with a preset indoor humidity set value according to the first comparison result and the second comparison result,
if Tao is more than or equal to T1 and less than or equal to T2 and Tar is less than Tset, continuing to compare the current indoor return air humidity with the indoor humidity set value and acquiring a first air-conditioning operation mode of the air-conditioning system according to the comparison result of the current indoor return air humidity and the indoor humidity set value;
otherwise, the current indoor return air humidity is not compared with the set indoor humidity value, and a first air-conditioning operation mode of the air-conditioning system is obtained according to the first comparison result and the second comparison result;
wherein the first air conditioning operating mode represents demand of the current indoor environment for indoor units in the air conditioning system, the T1 and T2 are a first temperature threshold and a second temperature threshold, respectively, and T1 < T2, and the Tao, Tar, and Tset are a current outdoor temperature, a current indoor return air temperature, and an indoor temperature set point, respectively.
2. The method as claimed in claim 1, wherein the step of obtaining the first air conditioning operation mode of the air conditioning system according to the first comparison result and the second comparison result comprises:
if Tao < T1 and Tar > Tset, the first air-conditioning operation mode is a standby mode;
if Tao is less than T1 and Tar is less than or equal to Tset, the first air-conditioning operation mode is a heating mode.
3. The operation mode control method of an air conditioning system according to claim 2, wherein the step of obtaining a first air conditioning operation mode of the air conditioning system according to the first comparison result and the second comparison result further comprises:
if Tao > T2 and Tar < Tset, the first air conditioning operation mode is a ventilation mode;
if Tao is greater than T2 and Tar is greater than or equal to Tset, the first air-conditioning operation mode is a cooling mode.
4. The operation mode control method of an air conditioning system according to claim 3, wherein the step of obtaining a first air conditioning operation mode of the air conditioning system according to the first comparison result and the second comparison result further comprises:
if Tao is more than or equal to T1 and less than or equal to T2 and Tar is more than or equal to Tset, the first air-conditioning operation mode is a cooling mode.
5. The method as claimed in claim 1, wherein the step of obtaining the first air conditioning operation mode of the air conditioning system according to the comparison result between the current indoor return air humidity and the indoor humidity set value specifically comprises:
if Har < Harset, the first air conditioner operation mode is a standby mode;
if Har is greater than or equal to Harset, the first air-conditioning operation mode is a dehumidification mode;
and Har and Harset are respectively set values of current indoor return air humidity and indoor humidity.
6. The operation mode control method of an air conditioning system according to any one of claims 1 to 5, wherein the air conditioning system includes a fresh air system, the operation mode control method further comprising:
judging whether a starting instruction of the fresh air system is received or not,
if the starting instruction is not received, taking the first air conditioner operation mode as the current operation mode of the air conditioning system;
if the starting instruction is received, acquiring a second air conditioner operation mode of the air conditioning system according to the outdoor environment state, and
and selecting the operation mode with higher priority from the first air-conditioning operation mode and the second air-conditioning operation mode as the current operation mode of the air-conditioning system according to the preset priority sequence of the operation modes.
7. The operation mode control method of an air conditioning system according to claim 6, wherein the outdoor temperature threshold further includes a third temperature threshold T3 and T3 < T1, and the step of obtaining the second air conditioning operation mode of the air conditioning system according to the outdoor environmental status specifically includes:
if T3 < Tao < T1, the second air-conditioning operation mode is a ventilation mode;
if Tao is less than or equal to T3, the second air-conditioning operation mode is a heating mode;
if Tao > T2, the second air conditioning operation mode is a cooling mode.
8. The operation mode control method of an air conditioning system according to claim 6, wherein the step of acquiring the second air conditioning operation mode of the air conditioning system according to the outdoor environmental status further comprises:
if Tao is more than or equal to T1 and less than or equal to T2 and Hao is more than or equal to H, the second air-conditioning operation mode is a dehumidification mode;
if Tao is more than or equal to T1 and less than or equal to T2 and Hao is less than H, the second air-conditioning operation mode is a ventilation mode;
wherein Hao and H are the current outdoor humidity and the preset outdoor humidity threshold, respectively.
9. The operation mode control method of an air conditioning system according to claim 6, wherein the operation mode priority order includes a first priority order and a second priority order,
the first priority order includes a heating mode, a ventilation mode, and a standby mode and the priority of the heating mode, the ventilation mode, and the standby mode is sequentially lowered;
the second priority order includes a cooling mode, a dehumidifying mode, a ventilating mode, and a standby mode and the cooling mode, the dehumidifying mode, the ventilating mode, and the standby mode are sequentially lower in priority.
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