CN106152374B - Control method of air conditioner indoor unit and air conditioner indoor unit - Google Patents
Control method of air conditioner indoor unit and air conditioner indoor unit Download PDFInfo
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- CN106152374B CN106152374B CN201510133590.XA CN201510133590A CN106152374B CN 106152374 B CN106152374 B CN 106152374B CN 201510133590 A CN201510133590 A CN 201510133590A CN 106152374 B CN106152374 B CN 106152374B
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Abstract
A control method of an air conditioner indoor unit and the air conditioner indoor unit can effectively avoid performance influence caused by introduction of improper fresh air volume. The control method of the air-conditioning indoor unit comprises the steps of controlling a fresh air fan which is arranged in the air-conditioning indoor unit by using a controller, wherein the fresh air fan is provided with a stop gear and at least two running gears which generate different noise values, the at least two running gears comprise a high-speed running gear and a low-speed running gear, receiving an outdoor temperature value acquired by an outdoor temperature sensor by using the controller, and setting the fresh air fan to the stop gear or the low-speed running gear or enabling the fresh air fan to run intermittently by using the controller when the outdoor temperature value received by the controller is greater than a preset upper limit or smaller than a preset lower limit.
Description
Technical Field
The present invention relates to a control method for an air conditioning indoor unit and an air conditioning indoor unit, and more particularly, to a control method for an air conditioning indoor unit having a fresh air function and an air conditioning indoor unit having a fresh air function controlled by the control method.
Background
With the improvement of living standard, people have higher requirements on living environment, more and more importance is attached to health and comfort, and the definition of living environment is not limited to a spacious living space, for example, because the time of a person in a room is far longer than that of the person outdoors, the quality of indoor air is directly related to the health of the person, and therefore the indoor air quality also becomes one of evaluation factors of the living environment.
To improve indoor air quality, the most effective method is to improve indoor fresh air volume, which can be realized by means of windowing and the like generally, but when an indoor air-conditioning device is working, the windowing manner can not be adopted generally in order to avoid the performance of the indoor air-conditioning device from being influenced, and therefore, the indoor air-conditioning device with the fresh air function is required.
For example, there is an air conditioner with a fresh air function as shown in fig. 4, which includes a heat exchange unit 10 and an air intake unit 20 that are connected to each other, wherein a heat exchanger 11 and a heat exchange fan 12 are disposed in the heat exchange unit 10, the air intake unit 20 is provided with an outdoor air intake K1 and an indoor air intake K2, and a fresh air fan 21 is further disposed in the air intake unit 20. When the air conditioning equipment works, the fresh air fan 21 sucks outdoor air (namely fresh air) from the outdoor air inlet K1, the heat exchange fan 12 sucks indoor air from the indoor air inlet K2, then the sucked fresh air and the sucked indoor air are sent to the heat exchanger 11 for heat exchange, and finally the air is blown out indoors.
However, the existing air conditioning equipment with a fresh air function is generally introduced with a fixed fresh air volume when performing fresh air operation, that is, the introduced fresh air volume is fixed, a fresh air fan is operated along with the start of the air conditioning equipment and is stopped along with the stop of the air conditioning equipment, and a control mode is single, so that a proper fresh air volume cannot be introduced from the outside in many times, the load of the air conditioning equipment is increased, the performance of the air conditioning equipment is affected, and the situation is particularly obvious under the condition that the outdoor air temperature is high during refrigeration or the outdoor air temperature is low during heating.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a control method for an air conditioning indoor unit having a fresh air function, which can effectively avoid performance from being affected by introduction of an inappropriate fresh air volume, and an air conditioning indoor unit having a fresh air function, which is controlled by the control method.
In order to achieve the above object, in a control method of an air conditioning indoor unit according to a first aspect of the present invention, a controller is used to control a fresh air fan included in the air conditioning indoor unit, where the fresh air fan has a stop gear and at least two operating gears that generate different noise values, where the at least two operating gears include a high-speed operating gear and a low-speed operating gear, the controller is used to receive an outdoor temperature value obtained by an outdoor temperature sensor, and when the outdoor temperature value received by the controller is greater than a preset upper limit or less than a preset lower limit, the controller is used to set the fresh air fan to the stop gear or the low-speed operating gear, or to intermittently operate the fresh air fan.
According to the control method of the air-conditioning indoor unit in the first aspect of the invention, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the controller is used for setting the fresh air fan to the stop gear or the low-speed operation gear, or enabling the fresh air fan to operate intermittently, so that the influence on the performance of the air-conditioning indoor unit due to the introduction of excessive low-temperature fresh air to the indoor space when the indoor space needs to be heated can be avoided, the influence on the performance of the air-conditioning indoor unit due to the introduction of excessive high-temperature fresh air to the indoor space when the indoor space needs to be cooled can be avoided, and the comfort level of a human body can be improved.
A control method of an air conditioning indoor unit according to a second aspect of the present invention is the control method of an air conditioning indoor unit according to the first aspect of the present invention, wherein the controller is used to determine whether the outdoor temperature data in a predetermined time period satisfies a condition that the outdoor temperature data is greater than a preset upper limit or less than a preset lower limit from the time when the controller receives the first outdoor temperature value that is greater than the preset upper limit or less than the preset lower limit, setting the fresh air fan to a stop gear or a low-speed operation gear by using the controller or intermittently operating the fresh air fan under the condition that the outdoor temperature value data in a preset time period are all greater than a preset upper limit or less than a preset lower limit, and under the condition that the outdoor temperature value data in a preset time period are not all larger than a preset upper limit or smaller than a preset lower limit, the controller is utilized to enable the fresh air fan to maintain the original operation gear.
According to the control method of the air-conditioning indoor unit in the second aspect of the invention, the situation that the operation gear of the fresh air fan of the air-conditioning indoor unit is frequently adjusted due to the fact that the outdoor temperature floats up and down near the preset upper limit and the preset lower limit can be avoided.
A third aspect of the present invention is the control method for an air conditioning indoor unit according to the first aspect of the present invention, wherein a state of the outdoor temperature sensor is detected by a detection unit, and when the detection unit detects that the outdoor temperature sensor has failed, the controller receives failure information detected by the detection unit and sets the fresh air fan to a low-speed operation position.
According to the control method of the air-conditioning indoor unit of the third aspect of the invention, the situation that improper fresh air is excessively introduced into the room when the outdoor temperature sensor fails to work can be avoided, and the performance of the air-conditioning indoor unit is influenced.
The fourth aspect of the present invention is a control method for an air conditioning indoor unit, based on the control method for an air conditioning indoor unit of the first aspect of the present invention, the air conditioning indoor unit further includes a heat exchange fan, the heat exchange fan has a stop gear and at least two operating gears that generate different noise values, and when the heat exchange fan is operated at any operating gear, the controller is used to limit the highest operating gear of the fresh air fan, so that a difference between a total noise value obtained by superimposing noise generated by the operation of the heat exchange fan and the operation of the fresh air fan and the noise value of the heat exchange fan is smaller than a preset value.
According to the control method of the air-conditioning indoor unit in the fourth aspect of the invention, once the difference value between the total noise value and the noise value of the heat exchange fan exceeds the preset value, the control part can reduce the operation gear of the fresh air fan, so that the total noise value of the heat exchange fan and the fresh air fan which operate simultaneously is reduced, the condition that the fresh air fan still operates in a mode with higher noise when the heat exchange fan operates in a mode with lower noise can be avoided, and the conditions that the noise is prominent and the comfort level of people is influenced can be avoided.
The control method of the air conditioning indoor unit according to the fifth aspect of the present invention is based on the control method of the air conditioning indoor unit according to the fourth aspect of the present invention, wherein the heat exchange fan has at least two operating gears including a high-speed operating gear and a low-speed operating gear, when the heat exchange fan operates at the high-speed operating gear, the controller is used to limit the highest operating gear of the fresh air fan to the high-speed operating gear, and when the heat exchange fan operates at the low-speed operating gear, the controller is used to limit the highest operating gear of the fresh air fan to the low-speed operating gear.
According to the control method of the air-conditioning indoor unit in the fifth aspect of the invention, the situations that the noise is prominent and the comfort of people is influenced due to the fact that the fresh air fan is set in an excessively high operating gear by mistake can be avoided.
The control method of the air conditioning indoor unit according to the sixth aspect of the present invention is based on the control method of the air conditioning indoor unit according to the fourth aspect of the present invention, wherein the preset value is less than 3 db.
According to the control method of the air-conditioning indoor unit in the sixth aspect of the invention, the problems that the attention of people is attracted and the comfort level of people is influenced due to the large difference of the superposed noise of the heat exchange fan and the fresh air fan can be effectively avoided.
A seventh aspect of the present invention is the control method for an air conditioning indoor unit according to the first aspect of the present invention, further including a heat exchange fan, wherein when the air conditioning indoor unit performs a ventilation operation, the controller is used to control the heat exchange fan to stop operating, and the fresh air fan is set to an operating position.
According to the control method of the air conditioner indoor unit in the seventh aspect of the invention, the requirement of a user for only exchanging fresh air in a special season can be met.
A control method for an air-conditioning indoor unit according to an eighth aspect of the present invention is the control method for an air-conditioning indoor unit according to the first aspect of the present invention, wherein the controller is configured to set the fresh air fan to a stop position when the air-conditioning indoor unit is subjected to a hot start or a defrosting operation.
Generally, in a heating mode, in order to avoid discomfort of a human body caused by directly blowing out cold air once an air conditioner is turned on, the air conditioner needs to go through a hot start process for several minutes, when the air conditioner is in a hot start state, an air conditioner outdoor unit starts preheating, an indoor heat exchange fan works after the temperature of a heat exchanger of an air conditioner indoor unit is increased, the rotating speed of the indoor heat exchange fan is gradually increased from a stop state in the hot start process until a set gear is reached, and the set gear is an operating gear of the indoor heat exchange fan set on a remote controller by a user or an operating gear of the indoor heat exchange fan required for enabling the indoor temperature to reach the set temperature under the condition of automatic operation.
According to the control method of the indoor unit of the air conditioner in the eighth aspect of the invention, the quick warm start of the air conditioner can be ensured by setting the fresh air fan to be the stop gear during the warm start until the air conditioner finishes the warm start.
In addition, when the air conditioner is in the defrosting mode, the heat exchange fan of the indoor unit of the air conditioner is normally in a stop state, and the operation is restarted after the set defrosting time elapses.
According to the control method of the indoor unit of the air conditioner in the eighth aspect of the present invention, the defrosting effect of the air conditioner can be ensured by setting the fresh air fan to the stop gear during the defrosting process until the air conditioner finishes defrosting.
The method for controlling an air-conditioning indoor unit according to a ninth aspect of the present invention is based on the method for controlling an air-conditioning indoor unit according to the first aspect of the present invention, and further includes a heat exchange fan having a stop gear and at least two operating gears that generate different noise values, wherein the controller is configured to receive a control instruction from a remote controller, and to set each gear of the heat exchange fan or the fresh air fan according to the control instruction. Here, each gear includes the above-described stop gear and at least two operating gears that generate different noise values.
According to the control method of the air conditioning indoor unit of the ninth aspect of the present invention, it is possible to blow out an appropriate amount of air at an appropriate temperature into the room or introduce a desired amount of fresh air into the room, as desired by the user.
The air-conditioning indoor unit according to the tenth aspect of the present invention includes a fresh air fan and a controller for controlling the fresh air fan, wherein the controller controls the air-conditioning indoor unit by the control method of the air-conditioning indoor unit according to any one of the first to ninth aspects of the present invention.
According to the indoor unit of an air conditioner in the tenth aspect of the present invention, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the controller is used to set the fresh air fan to the stop gear or the low-speed operation gear, or to intermittently operate the fresh air fan, so that the performance is effectively prevented from being affected by introducing inappropriate fresh air volume, and the comfort of the human body can be improved.
Effects of the invention
According to the control method of the air-conditioning indoor unit and the air-conditioning indoor unit with the fresh air function controlled by the control method, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the fresh air fan is set to the stop gear or the low-speed running gear by the controller, or the fresh air fan is enabled to run intermittently, so that the influence on the performance of the air-conditioning indoor unit caused by introducing excessive low-temperature fresh air into the room when the room needs to be heated can be avoided, the influence on the performance of the air-conditioning indoor unit caused by introducing excessive high-temperature fresh air into the room when the room needs to be cooled can be avoided, and the comfort level of a human body can be improved.
Drawings
Fig. 1 is a flowchart illustrating an example of control of an air conditioning indoor unit according to embodiment 1 of the present invention.
Fig. 2 is a flowchart showing an example of control of an air conditioning indoor unit according to embodiment 2 of the present invention.
Fig. 3 is a flowchart showing an example of control of an air conditioning indoor unit according to embodiment 4 of the present invention.
Fig. 4 is a bottom view schematically showing an example of the structure of a conventional air conditioner with a fresh air function.
Detailed Description
Hereinafter, each embodiment of the control method of the air conditioning indoor unit according to the present invention will be described.
(1) Embodiment mode 1
In this embodiment, the indoor unit of the air conditioner includes a fresh air fan and a controller, and the controller is used to control the fresh air fan. Incidentally, the fresh air fan herein corresponds to the fresh air fan mentioned in the background art, and since the present invention does not relate to the specific structure of the fresh air fan, detailed description thereof is omitted.
In addition, the fresh air fan has a stop gear and two operation gears including a 1 st gear (namely, a low-speed operation gear) and a 2 nd gear (namely, a high-speed operation gear), and the operation noise of the fresh air fan of the 1 st gear and the 2 nd gear is increased progressively.
In addition, the indoor unit of the air conditioner receives the outdoor temperature value acquired by the outdoor temperature sensor by using the controller, and when the outdoor temperature value received by the controller is greater than a preset upper limit or less than a preset lower limit, the fresh air fan is set to a stop gear or a low-speed operation gear by using the controller, or the fresh air fan is intermittently operated (namely, an operation time and an interval time are set, the fresh air fan is operated during the operation time, the fresh air fan stops after the operation time, and the operation of the fresh air fan is started after the interval time is met).
Next, an example of a control flow of the air conditioning indoor unit according to the present embodiment will be described with reference to fig. 1.
In step S13, the outdoor temperature is detected by the outdoor temperature sensor, and the outdoor temperature value T0 detected by the outdoor temperature sensor is sent to the controller, and then the process proceeds to step S14.
In step S14, the controller determines whether or not the outdoor temperature value T0 is equal to or higher than a preset upper limit T1 (for example, 40 ℃, but not limited thereto).
When it is determined in step S14 that the outdoor temperature value T0 is equal to or greater than the preset upper limit T1, the process proceeds to step S15, and the controller sets the fresh air fan to a stop position or a low-speed operation position, or intermittently operates the fresh air fan, and then ends the control flow.
On the other hand, when it is determined in step S14 that outdoor temperature value T0 is not equal to or higher than preset upper limit T1, the process proceeds to step S16.
In step S16, the controller determines whether the outdoor temperature value T0 is less than or equal to a preset lower limit T2 (e.g., -5 ℃, but not limited thereto).
When it is determined in step S16 that the outdoor temperature value T0 is equal to or lower than the preset lower limit T2, the process proceeds to step S15, and the controller sets the fresh air fan to a stop position or a low-speed operation position, or intermittently operates the fresh air fan, and then ends the control flow.
On the other hand, when it is determined in step S16 that the outdoor temperature value T0 is not equal to or less than the preset lower limit T2, the control flow is directly ended.
According to the embodiment, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the controller is used for setting the fresh air fan to the stop gear or the low-speed running gear, or the fresh air fan is enabled to run intermittently, so that the influence on the performance of the indoor unit of the air conditioner caused by introducing excessive low-temperature fresh air to the indoor space under the condition that the indoor space needs to be heated can be avoided, the influence on the performance of the indoor unit of the air conditioner caused by introducing excessive high-temperature fresh air to the indoor space under the condition that the indoor space needs to be cooled can be avoided, and the comfort level of a human body can be improved.
(2) Embodiment mode 2
This embodiment is basically the same as embodiment 1 described above, except that the air conditioning indoor unit further detects the state of the outdoor temperature sensor by the detection means, and when the detection means detects that the outdoor temperature sensor is out of order, the controller receives information on the failure detected by the detection means, and sets the fresh air fan to the low-speed operation position.
Next, an example of a control flow of the air conditioning indoor unit according to the present embodiment will be described with reference to fig. 2.
In step S11, the detection means detects whether the outdoor temperature sensor is operating normally.
When the detecting part detects the failure of the outdoor temperature sensor in step S11, the detected failure information is transmitted to the controller, and the fresh air fan is set to a low-speed operation gear by the controller in step S12.
When the detection means detects that the outdoor temperature sensor is operating normally in step S11, the process proceeds to step S13.
Since the control flow of step S13 and thereafter is the same as the control flow shown in fig. 1, the description thereof is omitted.
According to the present embodiment, the same technical effects as those of embodiment 1 can be obtained.
In addition, according to the embodiment, the situation that improper fresh air is excessively introduced into the room when the outdoor temperature sensor breaks down, and the performance of the indoor unit of the air conditioner is affected can be avoided.
(3) Embodiment 3
This embodiment is basically the same as embodiment 1 described above, except that the air-conditioning indoor unit further includes a heat exchange fan, and the air-conditioning indoor unit controls the fresh air fan and the heat exchange fan together by using the controller. Incidentally, the heat exchange fan herein corresponds to the heat exchange fan mentioned in the background art, and since the present invention does not relate to a specific structure of the heat exchange fan, detailed description thereof is omitted.
In the present embodiment, the heat exchange fan has a stop gear and a plurality of operating gears including 1 st gear to 5 th gear, and the operating noises of the heat exchange fan at 1 st gear to 5 th gear are sequentially increased by 46.0dB, 47.0dB, 48.0dB, 49.0dB and 50.0dB, respectively; the fresh air fan has a stop gear and two operation gears including a 1 st gear (namely a low-speed operation gear) and a 2 nd gear (namely a high-speed operation gear), and the operation noises of the fresh air fan at the 1 st gear and the 2 nd gear are increased progressively and are respectively 40.0dB and 43.0 dB.
Here, assuming that a noise value generated by the heat exchange fan is X, a noise value generated by the fresh air fan is Y, a total noise value obtained by superimposing the noise generated by the heat exchange fan and the noise generated by the fresh air fan is Z, and a difference between the total noise value Z and the noise value generated by the heat exchange fan is △ Z, the total noise value Z obtained by superimposing the noise generated by the heat exchange fan and the noise generated by the fresh air fan at different gear positions and the difference △ Z between the total noise value and the noise value generated by the heat exchange fan are shown in table 1 below.
TABLE 1
In this embodiment, when the heat exchange fan operates at any one of the 1 st gear to the 5 th gear, the controller is used to limit the highest operating gear of the fresh air fan, so that the difference between the total noise value obtained by superimposing the noises generated by the operation of the heat exchange fan and the fresh air fan and the noise value of the heat exchange fan is smaller than the preset value.
Here, the preset value is assumed to be 1.6 dB.
In this case, if the heat exchanging fan is operated at the 1 st gear, the controller limits the highest operating gear of the fresh air fan to the 1 st gear to avoid the difference △ Z in noise value being greater than 1.6 db.
On the other hand, if the heat exchange fan runs at the 2 nd gear, the controller limits the highest running gear of the fresh air fan to the 2 nd gear. In other words, the fresh air fan can be set to the stop gear, the 1 st gear or the 2 nd gear at this time.
In addition, in this embodiment, as in embodiment 1 above, the indoor unit of an air conditioner receives an outdoor temperature value obtained by the outdoor temperature sensor by the controller, and when the outdoor temperature value received by the controller is greater than a preset upper limit or less than a preset lower limit, the fresh air fan is set to a stop position or a low-speed operation position by the controller, or the fresh air fan is caused to operate intermittently (that is, an operation time and an interval time are set, in which the fresh air fan operates, and after the operation time elapses, the fresh air fan stops, and after the interval time is satisfied, the fresh air fan starts to operate again).
According to the embodiment, when the heat exchange fan operates at any one of the 1 st gear to the 5 th gear, the controller limits the highest operating gear of the fresh air fan, so that the difference value between the total noise value generated by the superposition of the noises generated by the operation of the heat exchange fan and the fresh air fan and the noise value of the heat exchange fan is smaller than the preset value, and therefore, once the difference value of the superposed noises exceeds the preset value, the control part can reduce the operating gear of the fresh air fan, thereby reducing the total noise value generated by the simultaneous operation of the heat exchange fan and the fresh air fan, avoiding the situation that the fresh air fan still operates in a mode with larger noise when the heat exchange fan operates in a mode with smaller noise, and further avoiding the conditions that the noise is prominent and the comfort of people is influenced.
In addition, according to the present embodiment, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the controller is used to set the fresh air fan to the stop gear or the low-speed operation gear, or to intermittently operate the fresh air fan, so that, as in embodiment 1, it is possible to avoid the performance of the indoor unit of the air conditioner from being affected by introducing excessive low-temperature fresh air into the room when the room needs to be heated, to avoid the performance of the indoor unit of the air conditioner from being affected by introducing excessive high-temperature fresh air into the room when the room needs to be cooled, and to improve the comfort of the human body.
(4) Embodiment 4
This embodiment is basically the same as embodiment 1 described above, except that the air-conditioning indoor unit further includes a heat exchange fan, and the air-conditioning indoor unit controls the fresh air fan and the heat exchange fan together by using the controller. As in embodiment 3 described above, the heat exchange fan herein corresponds to the heat exchange fan mentioned in the background art, and the detailed description thereof will be omitted since the present invention does not relate to the specific configuration of the heat exchange fan.
In the present embodiment, the heat exchange fan has a stop gear and two operating gears including a high-speed operating gear and a low-speed operating gear, and the operating noises of the heat exchange fan at the high-speed operating gear and the low-speed operating gear are increased progressively and respectively 36dB and 40 dB; the fresh air fan is provided with a stop gear and two running gears including a high-speed running gear and a low-speed running gear, and the running noise of the fresh air fan at the high-speed running gear and the low-speed running gear is increased progressively and is respectively 32dB and 35 dB.
Here, assuming that a noise value generated by the heat exchange fan is X, a noise value generated by the fresh air fan is Y, a total noise value obtained by superimposing the noise generated by the heat exchange fan and the noise generated by the fresh air fan is Z, and a difference between the total noise value Z and the noise value generated by the heat exchange fan is △ Z, a total noise value Z obtained by superimposing the noise generated by the heat exchange fan and the noise generated by the fresh air fan at different gear positions and a difference △ Z between the total noise value and the noise value generated by the heat exchange fan are shown in table 2 below.
TABLE 2
In this embodiment, when the heat exchange fan operates at any one of the high-speed operation gear and the low-speed operation gear, the controller is used to limit the highest operation gear of the fresh air fan, so that the difference between the total noise value obtained by superimposing the noises generated by the operation of the heat exchange fan and the fresh air fan and the noise value of the heat exchange fan is smaller than the preset value.
Here, the preset value is assumed to be 2 dB.
In this case, when the heat exchanging fan is operated at the low-speed operation position, the controller limits the highest operation position of the fresh air fan to the low-speed operation position to prevent the difference △ Z in noise value from being greater than 2db, which is a preset value.
On the other hand, when the heat exchange fan runs at a high-speed running gear, the controller limits the highest running gear of the fresh air fan to be the high-speed running gear. In other words, the fresh air fan can be set to a stop gear, a low-speed operation gear or a high-speed operation gear.
In addition, as in embodiment 1, the indoor unit of an air conditioner receives an outdoor temperature value acquired by the outdoor temperature sensor by the controller, and when the outdoor temperature value received by the controller is greater than a preset upper limit or less than a preset lower limit, the fresh air fan is set to a stop position or a low-speed operation position by the controller, or the fresh air fan is caused to operate intermittently (that is, an operation time and an interval time are set, in which the fresh air fan operates, and after the operation time elapses, the fresh air fan stops, and after the interval time is satisfied, the fresh air fan starts to operate again).
Next, an example of a control flow of the air conditioning indoor unit according to the present embodiment will be described with reference to fig. 3.
In step S13, the outdoor temperature is detected by the outdoor temperature sensor, and the outdoor temperature value T0 detected by the outdoor temperature sensor is sent to the controller, and then the process proceeds to step S14.
In step S14, the controller determines whether or not the outdoor temperature value T0 is equal to or higher than a preset upper limit T1 (for example, 40 ℃, but not limited thereto).
When it is determined in step S14 that the outdoor temperature value T0 is equal to or greater than the preset upper limit T1, the process proceeds to step S15, and the controller sets the fresh air fan to a stop position or a low-speed operation position, or intermittently operates the fresh air fan, and then ends the control flow.
On the other hand, when it is determined in step S14 that outdoor temperature value T0 is not equal to or higher than preset upper limit T1, the process proceeds to step S16.
In step S16, the controller determines whether the outdoor temperature value T0 is less than or equal to a preset lower limit T2 (e.g., -5 ℃, but not limited thereto).
When it is determined in step S16 that the outdoor temperature value T0 is equal to or lower than the preset lower limit T2, the process proceeds to step S15, and the controller sets the fresh air fan to a stop position or a low-speed operation position, or intermittently operates the fresh air fan, and then ends the control flow.
On the other hand, when it is determined in step S16 that the outdoor temperature value T0 is not equal to or less than the preset lower limit T2, the controller determines in step S17 that the outdoor temperature value T0 is greater than the preset lower limit T2 and less than the preset upper limit T1, and proceeds to step S18.
In step S18, the controller determines whether or not the heat exchanger fan is in the high-speed operation range.
When it is determined in step S18 that the heat exchanging fan is in the high-speed operation range, the controller limits the highest operation range of the fresh air fan to the high-speed operation range in step S19, and then ends the control flow.
On the other hand, when it is determined in step S18 that the heat exchanging fan is not in the high speed operation range, the controller determines in step S20 whether the heat exchanging fan is in the low speed operation range.
When it is determined in step S20 that the heat exchanging fan is in the low-speed operation range, the controller limits the highest operation range of the fresh air fan to the low-speed operation range in step S21, and then ends the control flow.
On the other hand, when it is determined in step S20 that the heat exchanging fan is not in the low-speed operation range, the controller determines in step S22 that the heat exchanging fan is in the stop range, sets the fresh air fan to the stop range, and then ends the control flow.
According to the embodiment, when the heat exchange fan operates at any one of the high-speed operation gear and the low-speed operation gear, the highest operation gear of the fresh air fan is limited by the controller, so that the difference between the total noise value generated by the superposition of the noises generated by the operation of the heat exchange fan and the fresh air fan and the noise value of the heat exchange fan is smaller than the preset value, once the difference of the superposed noises exceeds the preset value, the control part can reduce the operation gear of the fresh air fan, thereby reducing the total noise value generated by the simultaneous operation of the heat exchange fan and the fresh air fan, avoiding the phenomenon that the fresh air fan still operates in a mode with larger noise when the heat exchange fan operates in a mode with smaller noise, and further avoiding the conditions that the noise is prominent and the comfort level of people is influenced.
In addition, according to the present embodiment, when the outdoor temperature value received by the controller is greater than the preset upper limit or less than the preset lower limit, the controller is used to set the fresh air fan to the stop gear or the low-speed operation gear, or to intermittently operate the fresh air fan, so that, as in embodiment 1, it is possible to avoid the performance of the indoor unit of the air conditioner from being affected by introducing excessive low-temperature fresh air into the room when the room needs to be heated, to avoid the performance of the indoor unit of the air conditioner from being affected by introducing excessive high-temperature fresh air into the room when the room needs to be cooled, and to improve the comfort of the human body.
(5) Other embodiments
While particular embodiments of the present invention have been described above, it will be understood that the above embodiments are not to be construed as limiting the invention and that many modifications may be made by those skilled in the art based on the above disclosure without departing from the scope of the invention.
For example, in embodiments 1, 2, and 4, as an example of the control flow, an example is given in which it is determined whether outdoor temperature value T0 is equal to or higher than preset upper limit T1 and then determined whether outdoor temperature value T0 is equal to or lower than preset lower limit T2, but the present invention is not limited to this, and it may be determined whether outdoor temperature value T0 is equal to or lower than preset lower limit T2 and then determined whether outdoor temperature value T0 is equal to or higher than preset upper limit T1.
In embodiment 4, as an example of the control flow, an example is given in which it is determined whether or not the heat exchange fan is in the high-speed operation range first and then determined whether or not the heat exchange fan is in the low-speed operation range, but the present invention is not limited to this example. Of course, it is also possible to determine whether the heat exchange fan is in a stop gear, and then determine whether the heat exchange fan is in a low-speed operation gear or a high-speed operation gear.
In embodiment 3, the operation range of the heat exchange fan is set to five ranges, and in embodiment 4, the operation range of the heat exchange fan is set to two ranges. Similarly, in embodiments 1 to 4, the operation gear of the fresh air fan is two gears, but the present invention is not limited thereto, and the number of the operation gear of the fresh air fan may be changed as needed, and may be divided into three or more gears, for example.
In addition, in embodiments 1 to 4, the following may be provided: the controller judges whether outdoor temperature value data in a preset time period (for example, 2 minutes, but not limited thereto) meet the condition that the outdoor temperature value data in the preset time period meet the condition that the outdoor temperature value data are greater than the preset upper limit or less than the preset lower limit, immediately sets the fresh air fan to a stop gear or a low-speed operating gear by using the controller or enables the fresh air fan to operate intermittently when the outdoor temperature value data in the preset time period meet the condition that the outdoor temperature value data are greater than the preset upper limit or less than the preset lower limit, and enables the fresh air fan to maintain the original operating gear by using the controller when the outdoor temperature value data in the preset time period do not meet the condition that the outdoor temperature value data are greater than the preset upper limit or less than the preset lower limit. Therefore, the condition that the running gear of the fresh air fan of the indoor unit of the air conditioner is frequently adjusted due to the fact that the outdoor temperature floats up and down near the preset upper limit and the preset lower limit can be avoided.
In addition, in embodiments 3 and 4, it is also possible to provide: when the indoor unit of the air conditioner performs ventilation operation, the controller is utilized to control the heat exchange fan to stop operating, and the fresh air fan is set to an operating gear. Therefore, the requirement of a user for only exchanging fresh air in a special season can be met.
In addition, in embodiments 1 to 4, the following may be provided: when the air-conditioning indoor unit is started in a hot mode, the fresh air fan is set to a stop gear by the controller.
Generally, in a heating mode, in order to avoid discomfort of a human body caused by directly blowing out cold air once an air conditioner is turned on, the air conditioner needs to go through a hot start process for several minutes, when the air conditioner is in a hot start state, an air conditioner outdoor unit starts preheating, an indoor heat exchange fan works after the temperature of a heat exchanger of an air conditioner indoor unit is increased, the rotating speed of the indoor heat exchange fan is gradually increased from a stop state in the hot start process until a set gear is reached, and the set gear is an operating gear of the indoor heat exchange fan set on a remote controller by a user or an operating gear of the indoor heat exchange fan required for enabling the indoor temperature to reach the set temperature under the condition of automatic operation.
The fresh air fan is set to be a stop gear in the hot start process until the air conditioner is finished and hot started, so that the quick hot start of the air conditioner can be ensured.
In addition, in embodiments 1 to 4, the following may be provided: when the indoor unit of the air conditioner performs defrosting operation, the fresh air fan is set to a stop gear by the controller.
When the air conditioner is in the defrosting mode, the heat exchange fan of the indoor unit of the air conditioner is normally in a stop state, and the operation is started after the set defrosting time.
The fresh air fan is set to the stop gear in the defrosting process until the air conditioner finishes defrosting, so that the defrosting effect of the air conditioner can be ensured.
In embodiments 3 and 4, the controller may receive a control command from a remote controller operated by a user, and set each gear (including a stop gear and an operating gear) of the heat exchange fan or the fresh air fan according to the control command. Therefore, air with proper temperature and proper quantity can be blown out of the room or fresh air with required quantity can be introduced into the room according to the needs of users.
In addition, in the above embodiment, as examples of the preset value, 1.6dB and 2dB are given, but the preset value is not limited thereto, and the preset value may be changed as needed, but is preferably less than 3 dB in order to avoid that the difference between the superimposed noises of the heat exchange fan and the fresh air fan is large to attract attention of a person and influence comfort of the person.
In embodiments 1, 2, and 4, the control flow shown in fig. 1, the control flow shown in fig. 2, and the control flow shown in fig. 3 may be circulated without interruption (that is, step S13 may be executed again immediately after step S15 or step S16 in fig. 1 is executed, step S11 may be executed again immediately after any one of steps S12, S15, and S16 in fig. 2 is executed, and step S13 may be executed again immediately after any one of steps S15, S19, S21, and S22 in fig. 3 is executed), or may be circulated once at regular intervals, or may be circulated once each time the operation state of the air-conditioning indoor unit changes.
Claims (8)
1. A control method of an air-conditioning indoor unit utilizes a controller to control a fresh air fan included in the air-conditioning indoor unit, and is characterized in that,
the fresh air fan is provided with a stop gear and at least two running gears which generate different noise values, the at least two running gears comprise a high-speed running gear and a low-speed running gear,
receiving, with the controller, an outdoor temperature value acquired by an outdoor temperature sensor,
when the outdoor temperature value received by the controller is greater than a preset upper limit, the controller is utilized to set the fresh air fan to a stop gear or a low-speed operation gear, or the fresh air fan is enabled to operate intermittently; or when the outdoor temperature value received by the controller is less than a preset lower limit, the controller is utilized to set the fresh air fan to a stop gear or a low-speed operation gear, or the fresh air fan is enabled to operate intermittently,
starting from the moment when the controller receives the first outdoor temperature value which is greater than the preset upper limit, judging whether the outdoor temperature value data in the preset time period are all greater than the preset upper limit by using the controller, immediately setting the fresh air fan to a stop gear or a low-speed running gear by using the controller or intermittently running the fresh air fan under the condition that the outdoor temperature value data in the preset time period are all greater than the preset upper limit, and on the other hand, maintaining the original running gear by using the controller under the condition that the outdoor temperature value data in the preset time period are not all greater than the preset upper limit; or, starting from the moment that the controller receives the outdoor temperature value which is smaller than the preset lower limit for the first time, judging whether the outdoor temperature value data in the preset time period are all smaller than the preset lower limit by using the controller, immediately setting the fresh air fan to a stop gear or a low-speed running gear by using the controller or enabling the fresh air fan to run intermittently under the condition that the outdoor temperature value data in the preset time period are all smaller than the preset lower limit, and on the other hand, enabling the fresh air fan to maintain the original running gear by using the controller under the condition that the outdoor temperature value data in the preset time period are not all smaller than the preset lower limit.
2. The control method of an indoor unit of an air conditioner according to claim 1,
detecting the state of the outdoor temperature sensor by using a detecting part,
when the detection component detects that the outdoor temperature sensor has a fault, the controller is used for receiving fault information detected by the detection component and setting the fresh air fan to a low-speed operation gear.
3. The control method of an indoor unit of an air conditioner according to claim 1,
the indoor unit of the air conditioner also comprises a heat exchange fan,
the heat exchanging fan has a stop gear and at least two operating gears generating different noise values,
when the heat exchange fan runs at any running gear, the controller is utilized to limit the highest running gear of the fresh air fan, so that the difference value between the total noise value generated by superposition of noises generated by the running of the heat exchange fan and the fresh air fan and the noise value of the heat exchange fan is smaller than a preset value.
4. The control method of an indoor unit of an air conditioner according to claim 3, wherein,
the heat exchange fan is provided with at least two operating gears comprising a high-speed operating gear and a low-speed operating gear,
when the heat exchange fan runs at a high-speed running gear, the highest running gear of the fresh air fan is limited to be a high-speed running gear by the controller,
when the heat exchange fan runs at a low-speed running gear, the highest running gear of the fresh air fan is limited to be the low-speed running gear by the controller.
5. The control method of an indoor unit of an air conditioner according to claim 3, wherein,
the preset value is less than 3 decibels.
6. The control method of an indoor unit of an air conditioner according to claim 1,
when the air-conditioning indoor unit is subjected to hot start or defrosting operation, the controller is utilized to set the fresh air fan to a stop gear.
7. The control method of an indoor unit of an air conditioner according to claim 1,
the indoor unit of the air conditioner also comprises a heat exchange fan,
the heat exchanging fan has a stop gear and at least two operating gears generating different noise values,
and the controller is used for receiving a control instruction from a remote controller and setting each gear of the heat exchange fan or the fresh air fan according to the control instruction.
8. An indoor unit of an air conditioner comprises a fresh air fan and a controller for controlling the fresh air fan, and is characterized in that,
the controller controls the air-conditioning indoor unit by the control method of the air-conditioning indoor unit according to any one of claims 1 to 7.
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| CN107255345A (en) * | 2017-06-21 | 2017-10-17 | 广东美的暖通设备有限公司 | New blower fan and its control method and device |
| CN110578984A (en) * | 2019-09-19 | 2019-12-17 | 海信（山东）空调有限公司 | air conditioner control method and device based on fresh air function and air conditioner |
| CN112413735A (en) * | 2020-12-03 | 2021-02-26 | 珠海格力电器股份有限公司 | Fresh air conditioner control method and device, storage medium and fresh air conditioner |
| CN112923480A (en) * | 2021-02-25 | 2021-06-08 | 宁波奥克斯电气股份有限公司 | Fresh air system control method and device and fresh air conditioner |
| CN113587342B (en) * | 2021-07-02 | 2023-04-28 | 珠海格力电器股份有限公司 | Fresh air equipment control method and device and fresh air conditioner |
| CN113483450B (en) * | 2021-07-12 | 2022-04-15 | 珠海格力电器股份有限公司 | Control method, device and equipment of air conditioner and storage medium |
| CN114110918B (en) * | 2021-11-29 | 2023-04-25 | 宁波奥克斯电气股份有限公司 | Fresh air control method and device, fresh air conditioner and computer storage medium |
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