CN114413327A - Air conditioner condensation prevention control method and air conditioner - Google Patents
Air conditioner condensation prevention control method and air conditioner Download PDFInfo
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- CN114413327A CN114413327A CN202111604796.8A CN202111604796A CN114413327A CN 114413327 A CN114413327 A CN 114413327A CN 202111604796 A CN202111604796 A CN 202111604796A CN 114413327 A CN114413327 A CN 114413327A
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- 238000009833 condensation Methods 0.000 title claims abstract description 117
- 230000005494 condensation Effects 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000002265 prevention Effects 0.000 title abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 52
- 230000008020 evaporation Effects 0.000 claims abstract description 44
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005057 refrigeration Methods 0.000 abstract description 11
- 239000003507 refrigerant Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
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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
- F24F2110/10—Temperature
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/40—Damper positions, e.g. open or closed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application relates to an air conditioner condensation prevention control method and an air conditioner. The method comprises the following steps: acquiring a current fan gear and a current fan current; determining a fan current threshold based on a current fan gear; judging whether condensation risk exists according to a comparison result of the current fan current and a fan current threshold, and if yes, acquiring the current working temperature of the heat exchanger and the current indoor environment temperature; the working temperature of the heat exchanger is the outdoor machine evaporation temperature or the indoor machine tube temperature; determining a heat exchanger working temperature threshold value based on the current indoor environment temperature; and adjusting the current fan gear according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold. The scheme that this application provided can reach the cost that neither increases the air conditioner and can guarantee again that the air conditioner does not blow water and guarantee the effect of refrigeration performance.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner condensation prevention control method and an air conditioner.
Background
When the air conditioner refrigerates in summer, the phenomenon that the air conditioner blows water often appears, namely the air conditioner generates condensation, and uncomfortable experience is caused for users. In order to solve such problems, the conventional treatment method is to slow down the condensation phenomenon by increasing the cooling temperature, i.e., reducing the output of the compressor, when the condensation is generated, but such a method has the following problems: the refrigerating effect at high temperature is poor.
In the related art, the new processing mode is as follows: the humidity sensor is additionally arranged at the indoor unit, the humidity in the environment where the indoor unit of the air conditioner is located is detected through the humidity sensor, when the humidity in the environment where the indoor unit of the air conditioner is located is higher than a humidity threshold value, condensation is generated in the air conditioner, and at the moment, the output of the compressor is adjusted.
However, the above solution requires a humidity sensor to be added in the unit, which may increase the unit cost.
Disclosure of Invention
In order to solve the problems in the related art, the application provides the air conditioner condensation prevention control method and the air conditioner, and the technical effects that the cost of the air conditioner is not increased, the air conditioner is not blown with water, and the refrigeration performance is guaranteed can be achieved.
The application provides in a first aspect an air conditioner condensation prevention control method, comprising:
acquiring a current fan gear and a current fan current;
determining a fan current threshold based on a current fan gear;
judging whether condensation risk exists according to a comparison result of the current fan current and the fan current threshold, and if yes, acquiring the current working temperature of the heat exchanger and the current indoor environment temperature; the working temperature of the heat exchanger is the outdoor machine evaporation temperature or the indoor machine tube temperature;
determining a heat exchanger working temperature threshold value based on the current indoor environment temperature;
and adjusting the current fan gear according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold.
In one embodiment, the adjusting the current fan gear according to the comparison result between the current heat exchanger operating temperature and the heat exchanger operating temperature threshold includes:
if the current working temperature of the heat exchanger is smaller than the working temperature threshold of the heat exchanger, controlling the fan to operate at a low gear; and otherwise, maintaining the fan to operate at the current fan gear.
In one embodiment, the determining whether there is a risk of condensation according to the comparison result of the current fan current and the fan current threshold includes:
calculating the absolute value of the difference between the current fan current and the fan current threshold;
calculating the ratio of the absolute value of the difference to the current threshold of the fan to be used as a current deviation ratio;
and judging whether the current deviation ratio is larger than a preset current deviation or not.
In one embodiment, after determining whether there is a risk of condensation according to the comparison result between the current fan current and the fan current threshold, the method includes:
and if the current deviation ratio is smaller than or equal to the preset current deviation, executing the step of acquiring the current fan gear and the current fan current until the current deviation ratio is larger than the preset current deviation or the air conditioner is turned off.
In one embodiment, the determining the heat exchanger operating temperature threshold based on the current indoor ambient temperature includes:
if the current indoor environment temperature is smaller than a first ring temperature threshold, determining that the heat exchanger working temperature threshold is a first heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a first ring temperature threshold and less than a second ring temperature threshold, determining that the heat exchanger working temperature threshold is a second heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a second loop temperature threshold, determining that the heat exchanger working temperature threshold is a third heat exchanger working temperature threshold;
the first ring temperature threshold is less than the second ring temperature threshold; and the working temperature threshold of the first heat exchanger is smaller than the working temperature threshold of the second heat exchanger and smaller than the working temperature threshold of the third heat exchanger.
In one embodiment, the determining the fan current threshold based on the current fan gear includes:
if the current fan gear is a high gear, the fan current threshold is a high-gear rated current I1;
if the current fan gear is a middle gear, the fan current threshold value is a middle gear rated current I2;
and if the current fan gear is a low gear, the fan current threshold is a low gear rated current I3.
In one embodiment, the predetermined current deviation is in a range of [ 8%, 12% ].
In one embodiment, when the operating temperature of the heat exchanger is an outdoor unit evaporating temperature, the acquiring the current operating temperature of the heat exchanger and the current indoor environment temperature includes:
acquiring the steam pressure of the current outdoor unit;
and determining the evaporation temperature of the current outdoor unit according to the steam pressure of the current outdoor unit.
In one embodiment, the determining the current outdoor unit evaporating temperature according to the current outdoor unit steam pressure includes:
and determining the current outdoor unit evaporation temperature corresponding to the steam pressure of the current outdoor unit based on the saturated steam pressure temperature comparison table.
The present application provides in a second aspect an air conditioner comprising: a fan, a processor and a temperature sensor;
the temperature sensor is used for detecting the working temperature of the heat exchanger and transmitting the working temperature to the processor; the processor performs the method of any one of the above to control the fan based on data detected by the temperature sensor.
The technical scheme provided by the application can comprise the following beneficial effects:
the air conditioner condensation prevention control method selects a fan current threshold matched with the current fan current threshold according to the current fan operation gear, when the current fan current is not matched with the fan current threshold, the operation state of the air conditioner fan is not matched with a set value, the risk of condensation of an indoor unit of the air conditioner exists, at the moment, whether condensation of the air conditioner occurs needs to be detected, specifically, the current heat exchanger working temperature and the current indoor environment temperature are obtained, whether condensation occurs is judged according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold, the actual temperature of the near humid air of the air conditioner condensation is reduced to be below the dew point temperature of water vapor after the actual temperature of the near humid air passes through the heat exchange and the condensation of the surface of the indoor unit heat exchanger pipe because the temperature of the indoor unit heat exchanger pipe is too low, and the humid air is condensed into the condensation to be attached to the indoor unit heat exchanger pipe, therefore, when the temperature of the indoor unit pipe is lower than the temperature threshold of the indoor unit pipe, the condensation on the indoor unit is generated, the temperature of the indoor unit pipe is related to the temperature of the refrigerant in the pipeline, and when the refrigerant in a low indoor unit pipe temperature state flows back to the heat exchanger of the outdoor unit through the pipeline, the evaporation temperature of the outdoor unit is correspondingly in a low temperature state, so that whether the condensation occurs or not can be judged according to the comparison result of the evaporation temperature of the outdoor unit and the working temperature threshold of the heat exchanger;
in the process, the working temperature threshold of the heat exchanger is determined according to the current indoor environment temperature, and the critical points of condensation generated by the indoor unit of the air conditioner are correspondingly different due to different indoor environment temperatures, so that the accuracy of the judgment process is facilitated by taking the working temperature threshold of the heat exchanger determined by the current indoor environment temperature as the judgment basis for judging whether condensation is generated;
when judging that the machine produces the condensation then adjusts air conditioner fan running state in the air conditioning, avoids aggravating the condensation phenomenon or blow out the condensation that has produced and influence air conditioner normal operating, and judges the condensation risk through fan electric current in advance, is favorable to improving the accuracy that gets into the condensation and judges the opportunity, improves the efficiency of preventing the condensation control.
Increase humidity transducer with the tradition in indoor set department, compare through the scheme of humidity in humidity transducer detection air conditioning indoor set place environment, humidity transducer need not to add in this application, but utilize fan current to judge the condensation risk, and whether combine indoor set pipe temperature to judge to produce the condensation in order to reach and prevent the condensation effect, and utilize current fan gear and current indoor ambient temperature to select the fan current threshold value and the indoor set pipe temperature threshold value of matching respectively, with the degree of accuracy that improves the judgement, reach the technological effect that neither increases the cost of air conditioner and can guarantee that the air conditioner does not blow water and guarantee refrigeration performance again.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic flow chart of an air conditioner anti-condensation control method according to an embodiment of the present application;
FIG. 2 is another schematic flow chart of an air conditioner anti-condensation control method according to an embodiment of the present disclosure;
fig. 3 is another schematic flow chart of an air conditioner condensation prevention control method according to an embodiment of the present application.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred 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.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Example one
In the correlation technique, in order to solve the problem that the air conditioner generates condensation and the air conditioner blows water, a humidity sensor is required to be added at the indoor unit, the humidity in the environment where the indoor unit of the air conditioner is located is detected through the humidity sensor, when the humidity in the environment where the indoor unit of the air conditioner is located is higher than a humidity threshold value, the condensation is generated in the air conditioner, and the output of the compressor is adjusted at the moment.
However, the above solution requires a humidity sensor to be added in the unit, which may increase the unit cost.
In view of the above problems, an embodiment of the present application provides an air conditioner condensation prevention control method, which can ensure that the air conditioner does not blow water and ensure refrigeration performance without increasing the cost of the air conditioner.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of an air conditioner condensation prevention control method according to an embodiment of the present application.
Referring to fig. 1, the air conditioner anti-condensation control method includes:
101. acquiring a current fan gear and a current fan current;
in the embodiment of the application, according to the difference of refrigeration demand, the fan selects different gears to operate in order to satisfy the refrigeration demand, and the operating current of fan, the fan current also can be different correspondingly, it is different at the fan current that current fan current and current fan gear correspond, explain that current fan running state does not match with the refrigeration demand, can lead to indoor set heat exchanger heat transfer not enough, make the refrigerant temperature in the indoor set heat exchanger pipeline still be in a low temperature state, thereby make near humid air's actual temperature reduce to form the condensation below the dew point temperature of vapor behind the heat transfer precipitation of indoor set heat exchanger pipeline surface, consequently, can judge whether there is the condensation risk to the air conditioner through the result of comparing of the fan current that current fan current and current fan gear correspond.
102. Determining a fan current threshold based on a current fan gear;
it should be noted that the fan currents corresponding to different fan gears are correspondingly different, for example: the fan current is also higher in the high gear compared to the low gear.
Therefore, based on different fan gears, the fan current threshold for comparison with the current fan current is also different, and the fan current threshold needs to be determined according to the current fan gear.
103. Judging whether condensation risk exists according to the comparison result of the current fan current and the fan current threshold,
if yes, go to step 104;
if not, the step 101 is executed again.
In the embodiment of the present application, if there is no condensation risk, the step 101 is returned to continue to monitor the fan current in real time until the air conditioner generates a condensation risk or the air conditioner is turned off.
104. Acquiring the current working temperature of the heat exchanger and the current indoor environment temperature;
in this embodiment, the operating temperature of the heat exchanger is an outdoor unit evaporation temperature or an indoor unit tube temperature.
The reason for generating the air conditioner condensation is that the temperature of a refrigerant in the pipeline of the heat exchanger of the indoor unit is still in a low-temperature state due to poor heat exchange effect of the heat exchanger of the indoor unit, so that the actual temperature of nearby wet air is reduced to be lower than the dew point temperature of water vapor after heat exchange and moisture condensation on the surface of the pipeline of the heat exchanger of the indoor unit, and the wet air is condensed into condensation to be attached to the pipeline of the heat exchanger of the indoor unit, so that whether the condensation is generated in the air conditioner can be judged by comparing the temperature of the pipe of the indoor unit with the temperature of the pipe of the indoor unit in the normal working state of the air conditioner; accordingly, the refrigerant after heat exchange by the indoor unit heat exchanger flows to the outdoor unit heat exchanger through the pipeline, because the heat exchange of the incoming refrigerant at the indoor unit is insufficient, after the heat exchange of the refrigerant at the position at the outdoor unit heat exchanger is performed, the outdoor unit evaporation temperature is lower than the outdoor unit evaporation temperature in the normal working state of the air conditioner, and therefore, whether condensation is generated in the air conditioner can be judged by comparing the outdoor unit evaporation temperature with the outdoor unit evaporation temperature in the normal working state of the air conditioner.
105. Determining a heat exchanger working temperature threshold value based on the current indoor environment temperature;
the following are exemplary:
if the current indoor environment temperature is smaller than a first ring temperature threshold, determining that the heat exchanger working temperature threshold is a first heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a first ring temperature threshold and less than a second ring temperature threshold, determining that the heat exchanger working temperature threshold is a second heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a second loop temperature threshold, determining that the heat exchanger working temperature threshold is a third heat exchanger working temperature threshold;
the first ring temperature threshold is less than the second ring temperature threshold; and the working temperature threshold of the first heat exchanger is smaller than the working temperature threshold of the second heat exchanger and smaller than the working temperature threshold of the third heat exchanger.
In the embodiment of the application, the indoor environment temperature reflects the refrigerating capacity of the current air conditioner in the running state, namely the working temperature of the heat exchanger in the current refrigerating state can be determined according to the current indoor environment temperature, the working temperature of the heat exchanger is matched with the refrigerating capacity of the current air conditioner, namely the working temperatures of the heat exchangers matched with the refrigerating capacity of the current air conditioner at different indoor environment temperatures are different.
In the embodiment of the application, the detected working temperature of the heat exchanger is compared with the working temperature of the heat exchanger matched with the current air-conditioning refrigerating capacity, for example, if the detected working temperature of the heat exchanger is not matched with the working temperature of the heat exchanger matched with the current air-conditioning refrigerating capacity, it is indicated that the heat exchange of the current heat exchanger is insufficient, so that the temperature of the pipeline surface of the heat exchanger of the indoor unit is too low, and the humid air near the heat exchanger of the indoor unit can exchange heat with the pipeline surface of the heat exchanger of the indoor unit and condense moisture to form condensation.
In the above process, the working temperature of the heat exchanger matched with the current refrigeration state, that is, the working temperature threshold of the heat exchanger, needs to be determined according to the current indoor environment temperature.
106. And adjusting the current fan gear according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold.
The following are exemplary:
if the current working temperature of the heat exchanger is smaller than the working temperature threshold of the heat exchanger, controlling the fan to operate at a low gear; and otherwise, maintaining the fan to operate at the current fan gear.
Further, if the current working temperature of the heat exchanger is smaller than the threshold value of the working temperature of the heat exchanger, the running frequency of the compressor can be reduced.
Furthermore, in order to ensure the comfort level of the operation of the air conditioner, the current fan gear can be preferentially reduced when the current working temperature of the heat exchanger is lower than the working temperature threshold of the heat exchanger, and the operation frequency of the compressor is selectively reduced after the current fan gear is operated at a low gear.
The air conditioner condensation prevention control method provided by the embodiment of the application selects a fan current threshold matched with the current fan according to the current fan operation gear, when the fan current is not matched with the fan current threshold, the operation state of the air conditioner fan is not matched with a set value, so that the risk of condensation of an indoor unit of the air conditioner exists, at the moment, whether condensation of the air conditioner occurs needs to be detected, specifically, the current heat exchanger working temperature and the current indoor environment temperature are obtained, whether condensation occurs is judged according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold, the actual temperature of the near humid air of the air conditioner is reduced to be below the dew point temperature of water vapor after heat exchange and moisture condensation on the surface of the indoor unit heat exchanger pipeline because the temperature of the indoor unit heat exchanger pipeline is too low, and the humid air is condensed into condensation to be attached to the indoor unit heat exchanger pipeline, therefore, when the temperature of the indoor unit pipe is lower than the temperature threshold of the indoor unit pipe, the condensation on the indoor unit is generated, the temperature of the indoor unit pipe is related to the temperature of the refrigerant in the pipeline, and when the refrigerant in a low indoor unit pipe temperature state flows back to the heat exchanger of the outdoor unit through the pipeline, the evaporation temperature of the outdoor unit is correspondingly in a low temperature state, so that whether the condensation occurs or not can be judged according to the comparison result of the evaporation temperature of the outdoor unit and the working temperature threshold of the heat exchanger;
in the process, the working temperature threshold of the heat exchanger is determined according to the current indoor environment temperature, and the critical points of condensation generated by the indoor unit of the air conditioner are correspondingly different due to different indoor environment temperatures, so that the accuracy of the judgment process is facilitated by taking the working temperature threshold of the heat exchanger determined by the current indoor environment temperature as the judgment basis for judging whether condensation is generated;
when judging that the indoor set of air conditioner produces the condensation then control air conditioner fan with low-grade operation, avoid aggravating the condensation phenomenon or blow out the air conditioner influence air conditioner normal operating with the condensation that has produced, and judge the condensation risk through fan current in advance, be favorable to improving the accuracy of getting into the condensation and judging the opportunity, improve the efficiency of preventing the condensation control.
Increase humidity transducer with the tradition in indoor set department, compare through the scheme of humidity in humidity transducer detection air conditioning indoor set place environment, humidity transducer need not to add in this application, but utilize fan current to judge the condensation risk, and whether combine indoor set pipe temperature to judge to produce the condensation in order to reach and prevent the condensation effect, and utilize current fan gear and current indoor ambient temperature to select the fan current threshold value and the indoor set pipe temperature threshold value of matching respectively, with the degree of accuracy that improves the judgement, reach the technological effect that neither increases the cost of air conditioner and can guarantee that the air conditioner does not blow water and guarantee refrigeration performance again.
Example two
The embodiment of the present application takes a case where the operating temperature of the heat exchanger is the temperature of the indoor unit tubes as an example, and describes the condensation prevention control method of the air conditioner in the first embodiment.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 2 is another schematic flow chart of an air conditioner anti-condensation control method according to an embodiment of the present application.
Referring to fig. 2, the air conditioner anti-condensation control method includes:
201. acquiring a current fan gear and a current fan current;
in the embodiment of the present application, the content of step 201 is the same as that of step 101 in the first embodiment, and is not described herein again.
202. Determining a fan current threshold based on a current fan gear;
the following are exemplary:
if the current fan gear is a high gear, the fan current threshold is a high-gear rated current I1;
if the current fan gear is a middle gear, the fan current threshold value is a middle gear rated current I2;
and if the current fan gear is a low gear, the fan current threshold is a low gear rated current I3.
203. Calculating the absolute value of the difference value between the current fan current and the fan current threshold;
in the embodiment of the present application, the formula Δ I ═ I-I is calculated according tonI, calculating the absolute value of the difference; wherein Δ I represents the absolute value of the difference; i represents the current fan current; i isnRepresenting a fan current threshold, and determining according to the current fan gear, specifically: if the current fan gear is a high gear, InIs I1; if the current fan gear is a middle gear, InIs I2; if the current fan gear is a low gear, InIs I3.
204. Calculating the ratio of the absolute value of the difference value to the current threshold value of the fan as a current deviation ratio;
in the embodiment of the application, the calculation formula delta is delta I/InCalculating a current deviation ratio; where δ represents the current deviation ratio.
205. Judging whether the current deviation ratio is larger than a preset current deviation or not;
in the embodiment of the present application, the value range of the preset current deviation is [ 8%, 12% ].
Preferably, the preset current deviation is 10%.
It should be noted that, in the practical application process, the value of the preset current deviation may be adjusted according to the actual situation, and the above-mentioned preferred value of the preset current deviation does not constitute the only limitation to the present application.
If yes, go to step 206;
if not, returning to execute 201; namely, if the current deviation ratio is less than or equal to the preset current deviation, executing the step of obtaining the current fan gear and the current fan current until the current deviation ratio is greater than the preset current deviation or the air conditioner is turned off, specifically comprising: when the current deviation ratio is less than or equal to the preset current deviation, executing step 206; and when the air conditioner is turned off, the air conditioner is quitted from the condensation prevention control.
206. Acquiring the current indoor unit pipe temperature and the current indoor environment temperature;
in the embodiment of the application, the current indoor unit pipe temperature is acquired by a temperature sensor of the indoor unit.
207. Determining an indoor unit tube temperature threshold based on the current indoor environment temperature;
the following are exemplary:
if the current indoor environment temperature is smaller than a first environment temperature threshold, determining that the indoor unit pipe temperature threshold is a first indoor unit pipe temperature threshold;
if the current indoor environment temperature is greater than or equal to a first ambient temperature threshold and less than a second ambient temperature threshold, determining that the indoor unit tube temperature threshold is a second indoor unit tube temperature threshold;
if the current indoor environment temperature is greater than or equal to a second ambient temperature threshold, determining that the indoor unit tube temperature threshold is a third indoor unit tube temperature threshold;
the first ring temperature threshold is less than the second ring temperature threshold; the first indoor unit pipe temperature threshold is smaller than the second indoor unit pipe temperature threshold and smaller than the third indoor unit pipe temperature threshold.
208. And adjusting the current fan gear according to the comparison result of the current indoor unit pipe temperature and the indoor unit pipe temperature threshold value.
If the current indoor unit pipe temperature is lower than the indoor unit pipe temperature threshold value, controlling the fan to operate at a low gear; and otherwise, maintaining the fan to operate at the current fan gear.
According to the air conditioner condensation prevention control method provided by the embodiment of the application, a fan current threshold matched with the current fan current threshold is selected according to the current fan operation gear, when the fan current is not matched with the fan current threshold, the operation state of the air conditioner fan is not matched with a set value, so that the risk of condensation of an indoor unit of the air conditioner exists, at the moment, the current indoor unit pipe temperature and the current indoor environment temperature are obtained, the indoor unit pipe temperature threshold is determined according to the current indoor environment temperature, and the critical point of condensation of the indoor unit of the air conditioner is correspondingly different due to different indoor environment temperatures, so that the indoor unit pipe temperature threshold determined by the current indoor environment temperature is used as the basis for judging whether condensation is generated, and the accuracy of the judging process is facilitated;
when present indoor set pipe temperature is less than above-mentioned indoor set pipe temperature threshold value, explain that the machine produces the condensation in the air conditioning, then control air conditioner fan with low-grade operation, avoid aggravating the condensation phenomenon or blow off the condensation that has produced air conditioner influence air conditioner normal operating, and judge the condensation risk through fan current in advance, be favorable to improving the accuracy that gets into the condensation and judge the opportunity, improve the efficiency of preventing the condensation control.
Increase humidity transducer with the tradition in indoor set department, compare through the scheme of humidity in humidity transducer detection air conditioning indoor set place environment, humidity transducer need not to add in this application, but utilize fan current to judge the condensation risk, and whether combine indoor set pipe temperature to judge to produce the condensation in order to reach and prevent the condensation effect, and utilize current fan gear and current indoor ambient temperature to select the fan current threshold value and the indoor set pipe temperature threshold value of matching respectively, with the degree of accuracy that improves the judgement, reach the technological effect that neither increases the cost of air conditioner and can guarantee that the air conditioner does not blow water and guarantee refrigeration performance again.
EXAMPLE III
The present application embodiment describes an air conditioner condensation prevention control method in the first embodiment, taking a case where the operating temperature of the heat exchanger is the outdoor unit evaporation temperature as an example.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 3 is another schematic flow chart of an air conditioner condensation prevention control method according to an embodiment of the present application.
Referring to fig. 3, the air conditioner anti-condensation control method includes:
301. acquiring a current fan gear and a current fan current;
in this embodiment of the application, the content of step 301 is the same as that of step 201 in the second embodiment, and is not described herein again.
302. Determining a fan current threshold based on a current fan gear;
in the embodiment of the present application, the content of step 302 is the same as that of step 202 in the second embodiment, and is not described herein again.
303. Calculating the absolute value of the difference value between the current fan current and the fan current threshold;
in this embodiment of the present application, the content of step 303 is the same as that of step 203 in the second embodiment, and details are not described here.
304. Calculating the ratio of the absolute value of the difference to the current threshold of the fan to be used as a current deviation ratio;
in the embodiment of the present application, the content of step 304 is the same as that of step 204 in the second embodiment, and is not described herein again.
305. Judging whether the current deviation ratio is larger than a preset current deviation or not;
if yes, go to step 306;
if not, return to execute 301.
In the embodiment of the present application, the content of step 305 is the same as that of step 205 in the second embodiment, and is not described herein again.
306. Acquiring the steam pressure of the current outdoor unit and the current indoor environment temperature;
307. determining the evaporation temperature of the current outdoor unit according to the steam pressure of the current outdoor unit;
specifically, the method comprises the following steps:
and determining the current outdoor unit evaporation temperature corresponding to the steam pressure of the current outdoor unit based on the saturated steam pressure temperature comparison table.
In the practical application process, the corresponding relation between the vapor pressure and the evaporation temperature of different air-conditioning refrigerants is different, namely different saturated vapor pressure temperature comparison tables are arranged corresponding to different refrigerants, and the current outdoor unit evaporation temperature can be determined and obtained according to the vapor pressure of the current outdoor unit through the saturated vapor pressure temperature comparison table of the refrigerant used by the current air conditioner.
308. Determining an outdoor unit evaporation temperature threshold based on the current indoor environment temperature;
the following are exemplary:
if the current indoor environment temperature is smaller than a first environment temperature threshold, determining that the outdoor unit evaporation temperature threshold is a first outdoor unit evaporation temperature threshold;
if the current indoor environment temperature is greater than or equal to a first ambient temperature threshold and less than a second ambient temperature threshold, determining that the outdoor unit evaporation temperature threshold is a second outdoor unit evaporation temperature threshold;
if the current indoor environment temperature is greater than or equal to a second ambient temperature threshold, determining that the outdoor unit evaporation temperature threshold is a third outdoor unit evaporation temperature threshold;
the first ring temperature threshold is less than the second ring temperature threshold; the first outdoor unit evaporation temperature threshold is smaller than the second outdoor unit evaporation temperature threshold and smaller than the third outdoor unit evaporation temperature threshold.
It should be noted that, in the embodiment of the present application, there is no strict requirement on the execution timing of the above step 307 and step 308, and in an actual application process, the step 308 may be executed before the step 307, or the two steps may be executed in parallel.
309. And adjusting the current fan gear according to the comparison result of the current outdoor unit evaporation temperature and the outdoor unit evaporation temperature threshold.
If the current outdoor unit evaporation temperature is smaller than the outdoor unit evaporation temperature threshold, controlling the fan to operate at a low gear; and otherwise, maintaining the fan to operate at the current fan gear.
According to the air conditioner condensation prevention control method provided by the embodiment of the application, a fan current threshold matched with the current fan current threshold is selected according to the current fan operation gear, when the fan current is not matched with the fan current threshold, the operation state of the air conditioner fan is not matched with a set value, so that the risk of condensation of an indoor unit of the air conditioner is caused, at the moment, the current outdoor unit evaporation temperature and the current indoor environment temperature are obtained, the outdoor unit evaporation temperature threshold is determined according to the current indoor environment temperature, and the critical point of condensation of the indoor unit of the air conditioner is correspondingly different due to different indoor environment temperatures, so that the outdoor unit evaporation temperature threshold determined by the current indoor environment temperature is used as the basis for judging whether condensation is generated, and the accuracy of the judging process is facilitated;
because the current outdoor unit evaporation temperature is related to the indoor unit pipe temperature, when the temperature of a refrigerant in a heat exchanger pipeline of the indoor unit is in a low-temperature state due to insufficient heat exchange, the outdoor unit evaporation temperature is compared with the outdoor unit evaporation temperature in a normal working state and is also in a relatively low-temperature state, therefore, when the current outdoor unit evaporation temperature is lower than the outdoor unit evaporation temperature threshold value, the indoor unit of the air conditioner is explained to generate condensation, the air conditioner fan is controlled to operate at a low gear, the phenomenon of aggravating the condensation or the generated condensation is prevented from being blown out of the air conditioner to influence the normal operation of the air conditioner, the condensation risk is judged in advance through fan current, the accuracy of the condensation judgment opportunity is favorably improved, and the efficiency of condensation prevention control is improved.
Increase humidity transducer with the tradition in indoor set department, compare through the scheme of humidity in humidity transducer detection air conditioning indoor set place environment, this application need not to add humidity transducer, but utilize fan current to judge the condensation risk, and whether combine off-premises station evaporating temperature to judge and produce the condensation in order to reach and prevent the condensation effect, and utilize current fan gear and current indoor ambient temperature to select the fan current threshold value and the off-premises station evaporating temperature threshold value of matching respectively, in order to improve the degree of accuracy of judging, reach the technological effect that neither increases the cost of air conditioner can guarantee the air conditioner not to blow water and guarantee refrigeration performance again.
Example four
Corresponding to the embodiment of the application function implementation method, the application also provides an air conditioner and a corresponding embodiment.
The air conditioner includes: a fan, a processor and a temperature sensor;
the temperature sensor is used for detecting the working temperature of the heat exchanger and transmitting the working temperature to the processor; the processor executes the method according to any one of the above embodiments based on the temperature sensor detection data to control the fan.
In this embodiment of the present application, when the working temperature of the heat exchanger is the outdoor unit evaporating temperature, a temperature sensor may be additionally disposed on the outdoor unit heat exchanger to directly acquire the current outdoor unit evaporating temperature, or the current outdoor unit evaporating temperature may be determined by using the steam pressure of the current outdoor unit through the method described in the third embodiment.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.
Alternatively, the present application may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) which, when executed by a processor of an electronic device (or electronic device, server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the applications disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. An air conditioner anti-condensation control method is characterized by comprising the following steps:
acquiring a current fan gear and a current fan current;
determining a fan current threshold based on a current fan gear;
judging whether condensation risk exists according to a comparison result of the current fan current and the fan current threshold, and if yes, acquiring the current working temperature of the heat exchanger and the current indoor environment temperature; the working temperature of the heat exchanger is the outdoor machine evaporation temperature or the indoor machine tube temperature;
determining a heat exchanger working temperature threshold value based on the current indoor environment temperature;
and adjusting the current fan gear according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold.
2. The air conditioner anti-condensation control method according to claim 1,
the adjustment of the current fan gear according to the comparison result of the current heat exchanger working temperature and the heat exchanger working temperature threshold value comprises the following steps:
if the current working temperature of the heat exchanger is smaller than the working temperature threshold of the heat exchanger, controlling the fan to operate at a low gear; and otherwise, maintaining the fan to operate at the current fan gear.
3. The air conditioner anti-condensation control method according to claim 1,
the judging whether condensation risks exist according to the comparison result of the current fan current and the fan current threshold value comprises the following steps:
calculating the absolute value of the difference between the current fan current and the fan current threshold;
calculating the ratio of the absolute value of the difference to the current threshold of the fan to be used as a current deviation ratio;
and judging whether the current deviation ratio is larger than a preset current deviation or not.
4. The air conditioner anti-condensation control method according to claim 3,
after judging whether condensation risks exist according to the comparison result of the current fan current and the fan current threshold, the method comprises the following steps:
and if the current deviation ratio is smaller than or equal to the preset current deviation, executing the step of acquiring the current fan gear and the current fan current until the current deviation ratio is larger than the preset current deviation or the air conditioner is turned off.
5. The air conditioner anti-condensation control method according to claim 1,
the determining a heat exchanger operating temperature threshold based on the current indoor ambient temperature includes:
if the current indoor environment temperature is smaller than a first ring temperature threshold, determining that the heat exchanger working temperature threshold is a first heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a first ring temperature threshold and less than a second ring temperature threshold, determining that the heat exchanger working temperature threshold is a second heat exchanger working temperature threshold;
if the current indoor environment temperature is greater than or equal to a second loop temperature threshold, determining that the heat exchanger working temperature threshold is a third heat exchanger working temperature threshold;
the first ring temperature threshold is less than the second ring temperature threshold; and the working temperature threshold of the first heat exchanger is smaller than the working temperature threshold of the second heat exchanger and smaller than the working temperature threshold of the third heat exchanger.
6. The air conditioner anti-condensation control method according to claim 1,
the determining a fan current threshold based on the current fan gear includes:
if the current fan gear is a high gear, the fan current threshold is a high-gear rated current I1;
if the current fan gear is a middle gear, the fan current threshold value is a middle gear rated current I2;
and if the current fan gear is a low gear, the fan current threshold is a low gear rated current I3.
7. The air conditioner anti-condensation control method according to claim 3,
the value range of the preset current deviation is [ 8%, 12% ].
8. The air conditioner anti-condensation control method according to claim 1,
when the heat exchanger operating temperature is off-premises station evaporating temperature, acquire current heat exchanger operating temperature and current indoor ambient temperature, include:
acquiring the steam pressure of the current outdoor unit;
and determining the evaporation temperature of the current outdoor unit according to the steam pressure of the current outdoor unit.
9. The air conditioner anti-condensation control method according to claim 8,
the determining the current outdoor unit evaporation temperature according to the current outdoor unit steam pressure comprises the following steps:
and determining the current outdoor unit evaporation temperature corresponding to the steam pressure of the current outdoor unit based on the saturated steam pressure temperature comparison table.
10. An air conditioner, comprising: a fan, a processor and a temperature sensor;
the temperature sensor is used for detecting the working temperature of the heat exchanger and transmitting the working temperature to the processor; the processor performs the method of any of claims 1-9 to control the fan based on data detected by the temperature sensor.
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