CN109959110B - Air conditioner and anti-condensation method and device thereof - Google Patents
Air conditioner and anti-condensation method and device thereof Download PDFInfo
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- CN109959110B CN109959110B CN201910251947.2A CN201910251947A CN109959110B CN 109959110 B CN109959110 B CN 109959110B CN 201910251947 A CN201910251947 A CN 201910251947A CN 109959110 B CN109959110 B CN 109959110B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
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Abstract
The application discloses an air conditioner and an anti-condensation method and device thereof, wherein the method comprises the following steps: acquiring the current input voltage of the air conditioner, and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage; acquiring a target lowest operable frequency of a compressor in the air conditioner, acquiring a target highest operable frequency of the compressor according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and to be greater than or equal to the target lowest operable frequency; and detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, and controlling to increase the opening degree of a throttling element in the air conditioner. The condensation preventing method can effectively solve the problems of water blowing and water dropping of the indoor heat exchanger when the input voltage is low, and improves the running reliability of the air conditioner.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner and a condensation preventing method and device thereof.
Background
At present, the lowest operating voltage of the variable frequency air conditioner can reach 150V, the air speed of an indoor fan is higher, the evaporation temperature is relatively higher, and the generated condensed water can flow away through an inner water receiving disc, so that the condensation risk cannot occur.
In the related technology, the lowest operating voltage of the variable frequency air conditioner can reach 40V and is even lower, the lower the voltage is, the lower the rotating speed of the indoor fan is, under the same frequency, the temperature of the evaporator can be greatly reduced, the evaporator can generate serious condensation phenomenon, the problems of water blowing, water dripping and the like of the air conditioner are caused, and the reliability of the operation of the air conditioner is influenced.
Disclosure of Invention
The embodiment of the application provides an air conditioner and a condensation preventing method and device thereof, and the operation frequency of a compressor and the opening degree of a throttling element can be limited according to the current input voltage of the air conditioner, so that the problems of water blowing and water dropping of an indoor heat exchanger when the input voltage is low can be effectively solved, and the operation reliability of the air conditioner is improved.
The embodiment of the application provides an anti-condensation method of an air conditioner, which comprises the following steps: acquiring the current input voltage of the air conditioner, and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage; acquiring a target lowest operable frequency of a compressor in the air conditioner, acquiring a target highest operable frequency of the compressor in the air conditioner according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and greater than or equal to the target lowest operable frequency; and detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, and controlling to increase the opening degree of a throttling element in the air conditioner.
In addition, the anti-condensation method for the air conditioner according to the above embodiment of the present application may further have the following additional technical features:
in one embodiment of the present application, the controlling to increase the opening degree of a throttling element in the air conditioner includes: and updating the target minimum opening of a throttling element in the air conditioner according to the current input voltage, and controlling to increase the opening of the throttling element to be larger than or equal to the target minimum opening.
In an embodiment of the present application, the method further includes: acquiring the current actual rotating speed of an indoor fan in the air conditioner; the acquiring the target highest operable frequency of the compressor in the air conditioner according to the current input voltage comprises the following steps: determining the target highest operable frequency according to the current input voltage and the current actual rotating speed; the updating the target minimum opening degree of a throttling element in the air conditioner according to the current input voltage comprises the following steps: and determining the target minimum opening according to the current input voltage and the current actual rotating speed.
In an embodiment of the present application, the method further includes: and acquiring the current indoor humidity, and updating the target highest operable frequency and the target minimum opening according to the current humidity.
In an embodiment of the present application, before the detecting that the current operating frequency of the compressor is reduced to the target minimum operable frequency, the method further includes: acquiring indoor current humidity and indoor current temperature, and acquiring dew point temperature according to the current humidity and the current temperature; acquiring the temperature of an indoor unit coil pipe in the air conditioner; recognizing that the temperature of the coil pipe of the indoor unit is less than the dew point temperature, and controlling to reduce the current running frequency of the compressor; and identifying that the temperature of the coil of the indoor unit is greater than or equal to the dew point temperature, and controlling to maintain the current running frequency of the compressor.
In an embodiment of the present application, before the controlling increases the opening degree of the throttling element in the air conditioner, the controlling further includes: and determining that the temperature of the coil pipe of the indoor unit is less than the dew point temperature.
In an embodiment of the present application, the method further includes: the highest operable frequency of the compressor is positively correlated with the input voltage of the air conditioner and the actual rotation speed of the indoor fan, respectively.
In an embodiment of the present application, the method further includes: the maximum operable frequency of the compressor is inversely related to the indoor humidity.
In an embodiment of the present application, the method further includes: the target minimum opening of the throttling element is inversely related to the input voltage of the air conditioner and the actual rotation speed of the indoor fan, respectively.
In an embodiment of the present application, the method further includes: the target minimum opening of the throttling element is positively correlated with the indoor humidity.
The embodiment of the application provides an air conditioner prevent condensation device, includes: the identification module is used for acquiring the current input voltage of the air conditioner and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage; the acquisition module is used for acquiring the target lowest operable frequency of a compressor in the air conditioner; the frequency limiting module is used for acquiring the target highest operable frequency of a compressor in the air conditioner according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and greater than or equal to the target lowest operable frequency; and the opening degree adjusting module is used for detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency and controlling to increase the opening degree of a throttling element in the air conditioner.
The embodiment of the application provides an air conditioner, includes: the anti-condensation device of the air conditioner is provided.
The embodiment of the application provides electronic equipment, which comprises a memory and a processor; the processor reads the executable program code stored in the memory to run the program corresponding to the executable program code, so as to realize the anti-condensation method of the air conditioner.
An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the above-mentioned condensation preventing method for an air conditioner.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation.
Drawings
Fig. 1 is a flowchart illustrating a condensation preventing method of an air conditioner according to a first embodiment of the present disclosure;
fig. 2 is a system structure diagram of an air conditioner according to a first embodiment of the present application;
fig. 3 is a schematic block diagram of an anti-condensation device of an air conditioner according to a second embodiment of the present application; and
fig. 4 is a block diagram schematically illustrating an air conditioner according to a third embodiment of the present application.
Detailed Description
In order to solve the technical problems that in the prior art, the lowest operating voltage of a variable frequency air conditioner can reach 40V and is even lower, the lower the voltage is, the lower the rotating speed of an indoor fan is, the lower the rotating speed of the indoor fan is, the temperature of an evaporator can be greatly reduced under the same frequency, the evaporator can generate serious condensation phenomenon, the air conditioner is caused to blow water, drip water and the like, and the operation reliability of the air conditioner is influenced, the application provides a condensation preventing method of the air conditioner, the operating frequency of a compressor and the opening degree of a throttling element can be limited according to the current input voltage of the air conditioner, the problems of water blowing and water dripping of an indoor heat exchanger can be effectively solved when the input voltage is lower, and the operation reliability of the air conditioner is improved.
In order to better understand the above technical solutions, exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
Fig. 1 is a flowchart of a condensation preventing method of an air conditioner according to a first embodiment of the present application.
In one embodiment of the present application, as shown in fig. 2, an air conditioner may include: the system comprises an input power supply, an electric control system, a compressor, an outdoor heat exchanger, an indoor heat exchanger, an outdoor fan, an indoor fan and a throttling element. The outdoor fan is arranged corresponding to the outdoor heat exchanger, the indoor fan is arranged corresponding to the indoor heat exchanger, one end of the compressor is connected with one end of the outdoor heat exchanger, the other end of the outdoor heat exchanger is connected with one end of the throttling element, the other end of the throttling element is connected with one end of the indoor heat exchanger, the other end of the indoor heat exchanger is connected with the other end of the compressor, and the electric control system is connected with the input power supply, the indoor fan, the outdoor fan and the compressor respectively.
When the air conditioner operates in a refrigeration mode, high-temperature and high-pressure gaseous refrigerant coming out of the compressor enters the outdoor heat exchanger for heat exchange, then enters the indoor heat exchanger after being throttled and depressurized by the throttling element, and returns to the compressor after being subjected to heat exchange by the indoor heat exchanger.
When the air conditioner operates in a heating mode, high-temperature and high-pressure gaseous refrigerant coming out of the compressor firstly enters the indoor heat exchanger for heat exchange, then enters the outdoor heat exchanger after being throttled and depressurized by the throttling element, and returns to the compressor after being subjected to heat exchange by the outdoor heat exchanger.
As shown in fig. 1, the method for preventing condensation of an air conditioner according to an embodiment of the present application may include the following steps:
and S1, acquiring the current input voltage of the air conditioner, and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage.
And S2, acquiring a target lowest operable frequency of a compressor in the air conditioner, acquiring a target highest operable frequency of the compressor in the air conditioner according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and to be greater than or equal to the target lowest operable frequency.
Wherein the target maximum operable frequency of the compressor is: in order to prevent the air conditioner from having the condensation problems of water blowing, water dropping and the like when the rotating speed of an indoor fan of the air conditioner is reduced and the condensation phenomenon is serious, the operation frequency of a compressor is limited not to exceed the target highest operable frequency; the target minimum operable frequency of the compressor is: when the operating frequency of the compressor is operated at low frequency, the lower the frequency, the larger the pipeline vibration, and in order to ensure that the pipeline vibration is within an allowable range, the lowest operating frequency of the compressor is limited to be not lower than the target lowest operable frequency.
And S3, detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, and controlling to increase the opening degree of a throttling element in the air conditioner.
Specifically, in the process of the operation of the air conditioner, the current input voltage of the air conditioner is obtained, and the current input voltage of the air conditioner is judged, when the input voltage of the air conditioner is smaller than the preset voltage value (can be calibrated according to the actual condition), the air conditioner is considered to enter a low-voltage operation state, at the moment, the rotating speed of the indoor fan is reduced, at the same frequency, the temperature at which the indoor heat exchanger evaporates also decreases, when the water vapor reaches the level of saturation in the air, condensation on objects (evaporators) with relatively low temperatures can cause condensation problems, leading to dripping or blowing out of condensed water from the indoor unit, the temperature of the indoor heat exchanger is improved by reducing the running frequency of the compressor and opening the throttle element, therefore, condensation can be prevented, and the phenomenon that the indoor unit drips or blows out condensed water can be avoided.
In one embodiment of the present application, controlling to increase the opening degree of a throttling element in an air conditioner includes: and updating the target minimum opening degree of the throttling element in the air conditioner according to the current input voltage, and controlling to increase the opening degree of the throttling element to be larger than or equal to the target minimum opening degree.
Specifically, as the input voltage decreases, the operating frequency of the compressor is preferentially decreased, and when the operating frequency of the compressor decreases to the target minimum operable frequency, the opening degree of the throttling element is increased accordingly in order to increase the temperature of the indoor heat exchanger. The target minimum opening degree of the throttling element is related to the input voltage detected in real time, and the one-to-one corresponding relation between the target minimum opening degree of the throttling element and the input voltage is stored in the air conditioner in advance. For example, during the operation of the air conditioner, the input voltage is a, the corresponding target minimum opening degree is a ', and when the input voltage decreases to B, the corresponding target minimum opening degree is B', that is, the target minimum opening degree of the throttling element needs to be updated, wherein a > B, and a '< B', that is, the larger the voltage, the smaller the corresponding target minimum opening degree.
In an embodiment of the present application, the method further includes: acquiring the current actual rotating speed of an indoor fan in the air conditioner; acquiring the target highest operable frequency of a compressor in the air conditioner according to the current input voltage, wherein the method comprises the following steps: determining a target highest operable frequency according to the current input voltage and the current actual rotating speed; updating a target minimum opening degree of a throttling element in the air conditioner according to the current input voltage, comprising: and determining the target minimum opening according to the current input voltage and the current actual rotating speed.
Specifically, a voltage-rotation speed-frequency-opening table is pre-stored in the air conditioner, as shown in table 1, when the air conditioner enters a low-voltage operation state, the current actual rotation speed of the indoor fan is acquired, the pre-stored voltage-rotation speed-frequency-opening table is called, the target maximum operable frequency of the corresponding compressor can be obtained according to the current input voltage and the current actual rotation speed, and the compressor is controlled to operate at a frequency not higher than the target maximum operable frequency. Meanwhile, the target minimum opening degree of the corresponding throttling element can be obtained according to the current input voltage and the current actual rotating speed, and the opening degree of the throttling element is controlled to operate at an opening degree not lower than the target minimum opening degree.
TABLE 1
As shown in table 1, V1 < V2 < V3 < … < Vn, the actual rotation speed r1 < r2 < r3 < … < rn of the corresponding indoor fan, and the target maximum operable frequency f1 < f2 < f3 < … < fn of the corresponding compressor, that is, the maximum operable frequency of the compressor is positively correlated with the input voltage of the air conditioner and the actual rotation speed of the indoor fan. When f ═ f', the target minimum opening e1 > e2 > e3 > … > en of the corresponding throttling element, that is, the target minimum opening of the throttling element is negatively correlated with the input voltage of the air conditioner and the actual rotational speed of the indoor fan, respectively.
When the operating frequency of the compressor is reduced to the target minimum operable frequency, the opening degree of the throttling element is controlled to be increased, the current input voltage and the actual rotating speed of the indoor fan are firstly acquired to acquire the target minimum opening degree of the corresponding throttling element, and the opening degree of the throttling element is controlled to be not smaller than the acquired target minimum opening degree. The target minimum opening of the throttling element is respectively in negative correlation with the input voltage of the air conditioner and the actual rotating speed of the indoor fan, namely, the larger the input voltage and the actual rotating speed of the indoor fan are, the smaller the target minimum opening of the throttling element is.
It can be understood that the target maximum operable frequency of the compressor can also be calculated according to a formula, the target maximum operable frequency of the compressor is positively correlated with the actual rotating speed and the input voltage of the indoor fan, and the target minimum opening degree of the throttling element is negatively correlated with the actual rotating speed and the input voltage of the indoor fan, so that the formula can be adopted to calculate according to the input voltage V and the actual rotating speed r according to the following formula: the maximum operating frequency f is f (V, r) and e is f (V, r, f).
In an embodiment of the present application, the method further includes: and acquiring the current indoor humidity, and updating the highest operable frequency of the target and the minimum opening of the target according to the current humidity. The current indoor humidity can be obtained through a humidity sensor arranged on an indoor unit of the air conditioner, or the current indoor humidity can be obtained through data transmission between the air conditioner and other household appliances.
Specifically, updating the target maximum operable frequency according to the current humidity includes: and acquiring a frequency correction parameter according to the current humidity, and updating the highest operable frequency of the target by using the frequency correction parameter.
For example, in an embodiment of the present application, obtaining a target maximum operable frequency of a compressor in an air conditioner according to a current input voltage and a current actual rotation speed may include: inquiring and acquiring the candidate highest operable frequency of a compressor in the air conditioner according to the current input voltage and the current actual rotating speed, and determining the target highest operable frequency according to the candidate highest operable frequency; updating the target maximum operable frequency according to the current humidity, comprising: determining a target range in which the current humidity is located, and reselecting a candidate highest operable frequency corresponding to the target range as a target highest operable frequency, for example, when the input voltage is constant, as shown in table 2.
In one embodiment of the present application, updating the target minimum opening of the throttling element based on the current input voltage and the current actual speed comprises: inquiring and acquiring a candidate minimum opening of the throttling element according to the current input voltage and the current actual rotating speed, and determining a target minimum opening according to the candidate minimum opening; updating the target minimum opening according to the current humidity, comprising: determining a target range in which the current humidity is located, and reselecting a candidate minimum opening corresponding to the target range as the target minimum opening, for example, when the input voltage is constant, as shown in table 2.
TABLE 2
The target maximum operable frequency f of the compressor and the target minimum opening e of the throttling element are limited by detecting the indoor humidity phi, so that the temperature of the indoor heat exchanger can be increased, and the problem of condensation and water blowing can be prevented. For example, when the current humidity Φ 1 ∈ (80%, 100% ], the compressor maximum operable frequency f1, when the current operating frequency of the compressor is decreased to the target minimum operable frequency, the target minimum opening degree of the corresponding throttling element is e1, when the current humidity Φ 2 ∈ (60%, 80% ]), the target maximum operable frequency f2 of the compressor, when the current operating frequency of the compressor is decreased to the target minimum operable frequency, the target minimum opening degree of the corresponding throttling element is e2, when the current humidity Φ 3 ∈ (40%, 60% ]), the compressor target maximum operable frequency f3, when the current operating frequency of the compressor is decreased to the target minimum operable frequency, the target minimum opening degree of the corresponding throttling element is e3, when the current humidity Φ 4 ∈ (0, 40% ], the compressor target maximum operable frequency f4, when the current operating frequency of the compressor is decreased to the target minimum operable frequency, the target minimum opening degree of the corresponding throttling element is e 4; wherein f1 < f2 < f3 < f4 …, the highest operable frequency of the compressor is negatively correlated with the indoor humidity, i.e., the higher the humidity, the lower the target highest operable frequency of the compressor; when the operating frequency of the compressor is as low as the corresponding target minimum operable frequency, e1 > e2 > e3 > e4 …, the target minimum opening degree of the throttling element is positively correlated with the indoor humidity, i.e., the higher the humidity is, the larger the target minimum opening degree of the throttling element is.
For another example, in another embodiment of the present application, obtaining a target maximum operable frequency of a compressor in an air conditioner according to a current input voltage and a current actual rotation speed includes: inputting the current input voltage and the current actual rotating speed into a first corresponding relation between the pre-constructed input voltage and actual rotating speed and the target highest operable frequency to obtain the target highest operable frequency; updating the target maximum operable frequency according to the current humidity, comprising: and inputting the current input voltage, the current actual rotating speed and the current humidity into a second corresponding relation between the pre-constructed input voltage, actual rotating speed and humidity and the highest operable frequency, and re-acquiring the target highest operable frequency. And the target highest operable frequency and the target lowest operable frequency are in one-to-one correspondence.
In an embodiment of the present application, the method may further include: the target maximum operable frequency of the compressor is positively correlated with the input voltage of the air conditioner and the rotation speed of the indoor fan, and negatively correlated with the indoor humidity, respectively.
In other words, a one-to-one correspondence relationship between the input voltage and the actual rotation speed to the target maximum operable frequency, for example, f (V, r), may be pre-established, and then the target maximum operable frequency may be updated according to the current humidity, and the higher the humidity is, the lower the target maximum operable frequency of the compressor is, that is, the maximum operable frequency of the compressor may be further limited to the indoor humidity.
In another embodiment of the present application, obtaining a target minimum opening of the throttling element based on the current input voltage and the current actual speed comprises: inputting the current input voltage and the current actual rotating speed into a first corresponding relation between the input voltage and the actual rotating speed which are constructed in advance and the minimum opening degree, and acquiring a target minimum opening degree; updating the target minimum opening according to the current humidity, comprising: and inputting the current input voltage, the current actual rotating speed and the current humidity into a second corresponding relation between the input voltage, the actual rotating speed and the humidity which are constructed in advance and the minimum opening degree, and acquiring the target minimum opening degree again.
In other words, a one-to-one correspondence relationship between input voltage and actual rotation speed and minimum opening degree, for example, e (V, r), may be pre-established, and then the target minimum opening degree may be updated according to the current humidity, the higher the humidity is, the larger the target minimum opening degree of the throttling element is, that is, the target minimum opening degree of the throttling element may be further limited to the humidity in the room.
In an embodiment of the present application, before detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, the method further includes: acquiring indoor current humidity and indoor current temperature, and acquiring dew point temperature according to the current humidity and the current temperature; acquiring the temperature of an indoor unit coil in an air conditioner; recognizing that the temperature of the coil pipe of the indoor unit is lower than the dew point temperature, and controlling to reduce the current running frequency of the compressor; and recognizing that the temperature of the coil pipe of the indoor unit is greater than or equal to the dew point temperature, and controlling to maintain the current running frequency of the compressor.
In one embodiment of the present application, before controlling to increase the target minimum opening of the throttling element in the air conditioner, the method further includes: determining that the indoor unit coil temperature is less than the dew point temperature.
Specifically, the current indoor humidity and the current indoor temperature can be obtained through a temperature and humidity sensor arranged on an indoor unit of the air conditioner, or the current indoor humidity and the current indoor temperature can be obtained through data transmission between the air conditioner and other household appliances. And obtaining the dew point temperature according to the current humidity and the indoor temperature, for example, the dew point temperature can be obtained through a preset humidity-temperature-dew point temperature table.
Under the condition that the current input voltage is certain, the temperature of an indoor unit coil can be calculated according to the indoor temperature and the indoor humidity, or the temperature of the indoor unit coil is obtained through a temperature sensor arranged at the position of the indoor unit coil, and the temperature of the indoor unit coil and the dew point temperature are judged. When the temperature of the coil pipe of the indoor unit is less than or equal to the dew point temperature, indicating that condensed water is generated, and at the moment, reducing the operating frequency of the compressor and not less than the target lowest operable frequency until the temperature of the coil pipe of the indoor unit is greater than the dew point temperature; when the temperature of the coil pipe of the indoor unit is higher than the dew point temperature, no condensed water is generated.
When the operating frequency of the compressor is reduced to the target lowest operable frequency, the temperature of the coil of the indoor unit is still less than or equal to the dew point temperature, and at the moment, the opening degree of the throttling element is increased to prevent the condensation problem.
It should be noted that, in the process of adjusting the operating frequency of the compressor, if the operating frequency of the compressor is reduced to the target lowest operable frequency and still cannot meet the requirement, the input voltage, the actual rotational speed of the indoor fan, and the current operating frequency are obtained again to adjust the opening of the throttling element. Similarly, when the target minimum opening of the throttling element is judged whether to be adjusted according to the temperature between the coil pipe of the indoor unit and the dew point temperature, the opening of the throttling element is adjusted by acquiring the input voltage, the actual rotating speed of the indoor fan, the current operating frequency, the indoor temperature and the coil pipe temperature again.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation.
Based on the same concept, the embodiment of the application also provides a device corresponding to the method in the first embodiment, which is shown in the second embodiment.
Example two
Fig. 3 is a schematic block diagram of an anti-condensation device of an air conditioner according to a second embodiment of the present application.
As shown in fig. 3, the anti-condensation device of the air conditioner of the present application may include: the device comprises an identification module 10, an acquisition module 20, a frequency limiting module 30 and an opening degree adjusting module 40.
The identification module 10 is configured to obtain a current input voltage of the air conditioner, and identify that the air conditioner enters a low-voltage operation state according to the current input voltage. The obtaining module 20 is configured to obtain a target minimum operable frequency of a compressor in an air conditioner. And the frequency limiting module 30 is configured to obtain a target highest operable frequency of a compressor in the air conditioner according to the current input voltage, and limit the operating frequency of the compressor to be less than or equal to the target highest operable frequency and to be greater than or equal to the target lowest operable frequency. And the opening degree adjusting module 40 is used for detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency and controlling to increase the opening degree of a throttling element in the air conditioner.
In an embodiment of the present application, the opening degree adjusting module 40 is configured to control to increase the opening degree of a throttling element in the air conditioner, specifically, to update a target minimum opening degree of the throttling element in the air conditioner according to a current input voltage, and to control to increase the opening degree of the throttling element to be greater than or equal to the target minimum opening degree.
In an embodiment of the present application, the obtaining module 20 is further configured to obtain a current actual rotation speed of an indoor fan in the air conditioner; the frequency limiting module 30 obtains a target highest operable frequency of a compressor in the air conditioner according to the current input voltage, and is specifically configured to determine the target highest operable frequency according to the current input voltage and the current actual rotation speed; the opening degree adjusting module 40 updates a target minimum opening degree of a throttling element in the air conditioner according to the current input voltage, and is specifically configured to determine the target minimum opening degree according to the current input voltage and the current actual rotating speed.
In an embodiment of the present application, the obtaining module 20 is further configured to obtain a current humidity in the room, the frequency limiting module 30 updates the target maximum operable frequency according to the current humidity, and the opening adjusting module 40 updates the target minimum opening according to the current humidity.
In an embodiment of the present application, the frequency limiting module 30 is further configured to, before detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, obtain a current humidity and a current temperature in the room, and obtain a dew point temperature according to the current humidity and the current temperature; acquiring the temperature of an indoor unit coil in the air conditioner, identifying that the temperature of the indoor unit coil is less than the dew point temperature, and controlling to reduce the current running frequency of the compressor; and recognizing that the temperature of the coil pipe of the indoor unit is greater than or equal to the dew point temperature, and controlling to maintain the current running frequency of the compressor.
In one embodiment of the present application, the opening degree adjusting module 40 is further configured to determine that the indoor unit coil temperature is less than the dew point temperature before controlling to increase the opening degree of the throttling element in the air conditioner.
In one embodiment of the present application, the maximum operable frequency of the compressor is positively correlated with the input voltage of the air conditioner and the actual rotational speed of the indoor fan, respectively.
In one embodiment of the present application, the maximum operable frequency of the compressor is inversely related to the indoor humidity.
In one embodiment of the present application, the target minimum opening of the throttling element is inversely related to the input voltage of the air conditioner and the actual rotational speed of the indoor fan, respectively.
In one embodiment of the present application, the target minimum opening of the throttling element is positively correlated to the indoor humidity.
It should be noted that, for details not disclosed in the condensation preventing device of the air conditioner in the embodiment of the present application, please refer to details disclosed in the condensation preventing method of the air conditioner in the embodiment of the present application, and detailed description thereof is omitted here.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation. EXAMPLE III
Based on the same concept, the embodiment of the application also provides an air conditioner corresponding to the device in the second embodiment, which is shown in the third embodiment.
Fig. 4 is a block diagram schematically illustrating an air conditioner according to a third embodiment of the present application.
As shown in fig. 4, the air conditioner 100 according to the embodiment of the present application may include: the above-mentioned condensation preventing apparatus 110 of the air conditioner.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation.
Example four
The application also provides an electronic device, which comprises a memory and a processor; the processor reads the executable program codes stored in the memory to run programs corresponding to the executable program codes, so as to realize the anti-condensation method of the air conditioner.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation.
EXAMPLE five
The present application also provides a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements the above-described condensation preventing method of the air conditioner.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can be according to the current input voltage of air conditioner, preferentially carry out reduction control to the operating frequency of compressor, but the operating frequency when the compressor reaches minimum target operating frequency, and when can not satisfying the requirement, adjusts big control to throttling element's aperture again to can effectively solve when input voltage is lower, the problem that indoor heat exchanger blew water, drips, improve the reliability of air conditioner operation.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. An anti-condensation method of an air conditioner is characterized by comprising the following steps:
acquiring the current input voltage of the air conditioner, and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage;
acquiring a target lowest operable frequency of a compressor in the air conditioner, acquiring a target highest operable frequency of the compressor according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and greater than or equal to the target lowest operable frequency;
detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency, and controlling to increase the opening degree of a throttling element in the air conditioner;
wherein the controlling to increase the opening of the throttling element in the air conditioner comprises: and updating the target minimum opening of a throttling element in the air conditioner according to the current input voltage, and controlling to increase the opening of the throttling element to be larger than or equal to the target minimum opening.
2. The method of claim 1, further comprising:
acquiring the current actual rotating speed of an indoor fan in the air conditioner;
the acquiring the target highest operable frequency of the compressor in the air conditioner according to the current input voltage comprises the following steps:
determining the target highest operable frequency according to the current input voltage and the current actual rotating speed;
the updating the target minimum opening degree of a throttling element in the air conditioner according to the current input voltage comprises the following steps:
and determining the target minimum opening according to the current input voltage and the current actual rotating speed.
3. The method of claim 2, further comprising:
and acquiring the current indoor humidity, and updating the target highest operable frequency and the target minimum opening according to the current humidity.
4. The method of claim 3, wherein prior to detecting that the current operating frequency of the compressor has decreased to the target minimum operable frequency, further comprising:
acquiring indoor current humidity and indoor current temperature, and acquiring dew point temperature according to the current humidity and the current temperature;
acquiring the temperature of an indoor unit coil pipe in the air conditioner;
recognizing that the temperature of the coil pipe of the indoor unit is lower than the dew point temperature, and controlling to reduce the current running frequency of the compressor;
and identifying that the temperature of the coil of the indoor unit is greater than or equal to the dew point temperature, and controlling to maintain the current running frequency of the compressor.
5. The method of claim 4, wherein prior to controlling the opening of the throttling element within the air conditioner, further comprising:
and determining that the temperature of the coil pipe of the indoor unit is less than the dew point temperature.
6. The method according to any one of claims 3-5, further comprising: the highest operable frequency of the compressor is positively correlated with the input voltage of the air conditioner and the actual rotation speed of the indoor fan, respectively.
7. The method according to any one of claims 3-5, further comprising: the maximum operable frequency of the compressor is inversely related to the indoor humidity.
8. The method according to any one of claims 3-5, further comprising: the target minimum opening of the throttling element is inversely related to the input voltage of the air conditioner and the actual rotation speed of the indoor fan, respectively.
9. The method according to any one of claims 3-5, further comprising:
the target minimum opening of the throttling element is positively correlated with the indoor humidity.
10. An anti-condensation device of an air conditioner, comprising:
the identification module is used for acquiring the current input voltage of the air conditioner and identifying that the air conditioner enters a low-voltage operation state according to the current input voltage;
the acquisition module is used for acquiring the target lowest operable frequency of a compressor in the air conditioner;
the frequency limiting module is used for acquiring the target highest operable frequency of a compressor in the air conditioner according to the current input voltage, and limiting the operating frequency of the compressor to be less than or equal to the target highest operable frequency and greater than or equal to the target lowest operable frequency;
the opening degree adjusting module is used for detecting that the current operating frequency of the compressor is reduced to the target lowest operable frequency and controlling the opening degree of a throttling element in the air conditioner to be increased;
the opening degree adjusting module controls and increases the opening degree of a throttling element in the air conditioner, and is specifically used for: and updating the target minimum opening of a throttling element in the air conditioner according to the current input voltage, and controlling to increase the opening of the throttling element to be larger than or equal to the target minimum opening.
11. An air conditioner, comprising: the anti-condensation device of an air conditioner as claimed in claim 10.
12. An electronic device comprising a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the anti-condensation method of the air conditioner as claimed in any one of claims 1 to 9.
13. A computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the anti-condensation method of an air conditioner according to any one of claims 1 to 9.
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| JP2009068812A (en) * | 2007-09-18 | 2009-04-02 | Panasonic Corp | Air conditioner |
| CN102705964B (en) * | 2012-05-22 | 2016-01-27 | Tcl空调器(中山)有限公司 | Air-conditioner and control method thereof |
| CN103836762B (en) * | 2012-11-22 | 2017-01-11 | 广东美的制冷设备有限公司 | Variable frequency air conditioner and method and device for controlling variable frequency air conditioning system |
| CN106949602B (en) * | 2017-03-31 | 2019-10-29 | 广东美的制冷设备有限公司 | The anti-method for excessive heating protection and device of power device in air conditioner and air conditioner |
| CN109405207B (en) * | 2018-10-10 | 2021-07-13 | 海信家电集团股份有限公司 | Energy-saving method and device for air conditioner |
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