CN114061057A - Refrigerant flow equalization control method and device for air conditioner, air conditioner and storage medium - Google Patents
Refrigerant flow equalization control method and device for air conditioner, air conditioner and storage medium Download PDFInfo
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- CN114061057A CN114061057A CN202010749443.6A CN202010749443A CN114061057A CN 114061057 A CN114061057 A CN 114061057A CN 202010749443 A CN202010749443 A CN 202010749443A CN 114061057 A CN114061057 A CN 114061057A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004590 computer program Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- -1 when X is-1 Chemical compound 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
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/77—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 by controlling the speed of ventilators
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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
- F24F11/84—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 using valves
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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
- F24F11/70—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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F2140/20—Heat-exchange fluid temperature
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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 invention relates to the technical field of air conditioners, and discloses a refrigerant flow equalization control method and device of an air conditioner, the air conditioner and a storage medium, wherein the air conditioner comprises an outdoor unit and a plurality of indoor units, and a branch pipe is connected between the outdoor unit and each indoor unit, and the control method is characterized by comprising the following steps: acquiring the coil temperature of each indoor unit; determining a temperature interval in which the temperature of the coil is; determining the wind speed adjustment level of each indoor unit according to the temperature interval and a preset relation table; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level; and adjusting the rotating speed of a fan of the indoor unit according to the air speed adjusting grade so as to adjust the quantity of the refrigerant entering the indoor unit. The invention can solve the problem of refrigerant flow difference of each indoor unit in the multi-split air conditioner, ensures that each indoor unit has good operation effect and improves the use experience of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant flow equalization control method and device of an air conditioner, the air conditioner and a storage medium.
Background
The air conditioners are of various types, wherein the synchronous one-drive-multiple variable frequency air conditioner is the type which is used more currently. The synchronous one-driving-multiple frequency conversion air conditioner is a one-driving-multiple air conditioner with one outdoor unit simultaneously connected with a plurality of same indoor units. Controlling the on-off, the running mode, the air speed of the indoor unit and the like of the indoor unit through a wire controller, and executing the same control instruction by all the indoor units; the outdoor unit is connected with each indoor unit through a branch pipe, and the flow of the refrigerant is controlled through an electronic expansion valve of the outdoor unit. The control mode and the refrigerant flow determine that the refrigerant flow of each indoor unit is inevitably different, if the position difference of the installation position of each indoor unit relative to the outdoor unit is large, the refrigerant flow difference of each indoor unit is more obvious, and the problems of poor refrigerating and heating effects of part of indoor units, poor user experience and the like are caused.
Disclosure of Invention
The purpose of the invention is: the refrigerant flow equalizing control method for the synchronous one-drive-many variable frequency air conditioner can solve the problem of refrigerant flow difference of indoor units, ensures that the indoor units have good operation effect, and improves the use experience of users.
In order to achieve the above object, the present invention provides a refrigerant flow equalization control method for an air conditioner, the air conditioner including an outdoor unit and a plurality of indoor units, a branching pipe being connected between the outdoor unit and each of the indoor units, the control method comprising:
acquiring the coil temperature of each indoor unit;
determining a temperature interval in which the temperature of the coil is;
determining the wind speed adjustment level of each indoor unit according to the temperature interval and a preset relation table; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and adjusting the rotating speed of a fan of the indoor unit according to the air speed adjusting grade so as to adjust the quantity of the refrigerant entering the indoor unit.
Further, the adjusting the fan rotating speed of the indoor unit according to the wind speed adjusting level specifically comprises: and comparing the wind speed adjusting grades of the indoor units, selecting the highest wind speed adjusting grade, adjusting the rotating speed of a fan of the corresponding indoor unit according to the highest wind speed adjusting grade, and not adjusting the other indoor units.
Further, when the temperature interval of the coil pipe is (T1, T2), the wind speed adjusting grade is 0, and the indoor unit does not adjust the rotating speed of the fan according to the wind speed adjusting grade;
when the temperature interval of the coil pipe is [ T2, T3 ], the wind speed adjusting grade is X, and the indoor unit increases the rotating speed of the fan according to the wind speed adjusting grade X;
when the temperature interval of the coil pipe is (T4, T1) and the wind speed adjusting grade is Y, the indoor unit reduces the rotating speed of the fan according to the wind speed adjusting grade Y;
wherein, T1, T2, T3 and T4 are all preset temperature values, T4 is more than T1 and more than T2 is more than T3, and X, Y are all preset wind speed adjustment grades.
Further, the higher the temperature of the temperature interval is, the larger the value of X is, and when the indoor unit increases the fan rotation speed according to the wind speed adjustment level X, the larger X indicates that the wind speed adjustment level is higher, the higher the wind speed adjustment level is, and the larger the fan rotation speed increase amount is.
Further, when the indoor unit increases the fan rotation speed according to the wind speed adjustment level X, the increased fan rotation speed is (Fup-F)/a, where a is a preset constant value, F is the current fan gear rotation speed, Fup is a gear rotation speed one step higher than F, when F is the highest gear rotation speed, Fup is F + F1, and F1 is the preset fan rotation speed.
Further, the lower the temperature in the temperature interval is, the smaller the value of Y is, and when the indoor unit reduces the fan rotation speed according to the wind speed adjustment level Y, the smaller Y indicates that the wind speed adjustment level is higher, the higher the wind speed adjustment level is, and the larger the fan rotation speed reduction is.
Further, when the indoor unit reduces the fan rotation speed according to the wind speed adjustment level Y, the reduced fan rotation speed is (F-Fdown)/B, where B is a preset constant value, F is the current fan gear rotation speed, Fdown is a gear rotation speed one step lower than F, and when F is the lowest gear rotation speed, Fdown is F-F2, and F2 is the preset fan rotation speed.
Further, when the temperature interval of the coil pipe is (-2, 2), the wind speed adjustment grade is 0, and the indoor unit does not adjust the rotating speed of the fan;
when the temperature interval of the coil pipe is [2, 4], the wind speed adjusting grade is 1, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/5;
when the temperature interval of the coil pipe is [4, 6], the wind speed adjusting grade is 2, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/3;
when the temperature interval of the coil pipe is [6, 20 ], the wind speed adjusting grade is 3, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/2;
when the temperature interval of the coil pipe is (-4, -2), the wind speed adjustment grade is-1, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/5;
when the temperature interval of the coil pipe is (-6, -4), the wind speed adjustment grade is-2, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/3;
when the temperature interval of the coil pipe is (-20, -6), the wind speed adjustment grade is-3, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/2;
wherein F is the current fan gear speed, Fup is the gear speed one level higher than F, and Fdown is the gear speed one level lower than F.
The utility model provides a refrigerant flow equalizing control device of air conditioner, the air conditioner includes off-premises station and a plurality of indoor set, off-premises station and each be connected with the branch pipe between the indoor set, still include:
the temperature acquisition module is used for acquiring the coil temperature of each indoor unit;
the control module is used for judging a temperature interval in which the temperature of the coil pipe is positioned, confirming the wind speed adjustment grade of the indoor unit according to the temperature interval and a preset relation table, and sending a related control instruction to the indoor unit; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and the indoor unit adjusts the rotating speed of the fan according to the control instruction.
An air conditioner comprises an outdoor unit, a plurality of indoor units and a controller, wherein the controller is respectively electrically connected with the outdoor unit and each indoor unit, a branch pipe is connected between the outdoor unit and each indoor unit, and the refrigerant flow equalizing control method of the air conditioner is used when the air conditioner runs.
A storage medium, which includes a stored computer program, wherein when the computer program runs, a device in which the storage medium is located is controlled to execute the refrigerant flow equalization control method of the air conditioner.
Compared with the prior art, the refrigerant flow equalization control method and device of the air conditioner, the air conditioner and the storage medium provided by the invention have the beneficial effects that: through the contrast of the coil pipe temperature of each indoor unit and the set temperature interval, when the coil pipe temperature is in a certain temperature interval, the rotating speed of a fan of the indoor unit is adjusted according to a preset adjusting control instruction, so that the flow of a refrigerant is adjusted, the refrigerating or heating effect of an air conditioner is improved, and the comfort of the air conditioner in use is improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a communication block diagram of the air conditioner of the present invention;
fig. 3 is a schematic flow chart of air conditioning refrigerant according to the present invention.
In the figure: 1. an outdoor unit; 2. an indoor unit; 201. an indoor unit host; 202. the indoor unit slave machine; 3. a controller; 4. a junction box; 5. and (4) branching the pipes.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1: a refrigerant flow equalization control method of an air conditioner.
The refrigerant flow equalization control method of the air conditioner in the preferred embodiment of the invention comprises an outdoor unit and a plurality of indoor units, wherein a branch pipe is connected between the outdoor unit and each indoor unit, and the control method comprises the following steps:
acquiring the coil temperature of each indoor unit;
determining a temperature interval in which the temperature of the coil is;
determining the wind speed adjustment level of each indoor unit according to the temperature interval and a preset relation table; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and adjusting the rotating speed of a fan of the indoor unit according to the air speed adjusting grade so as to adjust the quantity of the refrigerant entering the indoor unit.
Based on the above scheme, in this embodiment, after the air conditioner operates stably, the coil temperature of each indoor unit 2 is detected in real time, and the corresponding control instruction is selected and sent to the indoor unit 2 when determining which temperature interval the coil temperature is in, the indoor unit 2 adjusts the fan rotation speed after analyzing the control instruction according to receiving the control instruction, and after the fan rotation speed is adjusted by the indoor unit 2, the corresponding refrigerant flow is also adjusted, so that the operation effect of each indoor unit 2 can be ensured to meet the demand by such a control method.
Preferably, the adjusting the fan speed of the indoor unit according to the wind speed adjustment level specifically includes: and comparing the wind speed adjusting grades of the indoor units, selecting the highest wind speed adjusting grade, adjusting the rotating speed of a fan of the corresponding indoor unit according to the highest wind speed adjusting grade, and not adjusting the other indoor units. The method comprises the following specific steps: the wind speed adjustment level Ln of each indoor unit 2 is determined according to the coil temperature interval, the numbers of a plurality of indoor units 2 are set, n-0 represents an indoor unit master, n-1 represents an indoor unit slave 1, n-2 represents an indoor unit slave 2, and the like. The controller 3 sends a wind speed adjusting instruction and an indoor unit number to the indoor unit 2, and the wind speed adjusting grade is judged and sent to the indoor unit 2 according to the following sequence:
a. taking Lmax { | L0|, | L1|, | L2|, and | L3| … };
b. if Lmax is 3, the controller 3 sends a control instruction of the indoor unit 2 with the wind speed adjustment grade of 3 or-3, and the rest indoor wind speed adjustment grades are clear 0;
c. if Lmax is 2, the controller 3 sends an indoor unit control instruction with the wind speed adjustment grade of 2 or-2, and the wind speed adjustment grades of the rest indoor units are clear 0;
d. if Lmax is 1, the controller 3 sends an indoor unit control instruction with the air speed adjustment grade of-1, and the air speed adjustment grades of the other indoor units are clear 0; and if the wind speed adjusting grades are not-1, sending an indoor unit control instruction with the wind speed adjusting grade of 1.
The indoor unit 2 analyzes the indoor unit number and the air speed adjusting instruction, the indoor unit 2 determines the fan rotating speed regulating quantity according to the air speed adjusting grade and the current fan rotating speed gear, and the fan rotating speed adjusting time of the indoor unit 2 is consistent with the wire controller 3.
The absolute value is taken here to include both cooling and heating cases, and the wind speed adjustment level is positive during cooling and negative during heating.
Preferably, the detection of the coil temperature of the indoor unit 2 is performed after the air-conditioning compressor is operated for 10 minutes, the average value of the coil temperature is calculated every 5 minutes, the temperature interval in which the coil temperature of the indoor unit 2 is located is determined by comparison, and the wind speed adjustment instruction of each indoor unit 2 is determined according to the temperature interval in which the coil temperature is located. The operation time of 10 minutes is set to ensure that the air conditioner stably operates, so that the influence of instability in operation starting on a detection result and a judgment structure is avoided.
Preferably, the temperature interval includes a plurality of temperature intervals, and each temperature interval is correspondingly provided with a wind speed adjustment level. The temperature intervals comprise a middle interval, namely when the temperature of the coil pipe is in the middle interval, the rotating speed of the fan of the indoor unit 2 does not need to be adjusted. Specifically, when the temperature interval of the coil pipe is (T1, T2), the wind speed adjustment grade is 0, and the rotating speed of the fan of the indoor unit 2 is not adjusted, wherein T1 is-2 ℃ and T2 is 2 ℃.
Preferably, when the coil temperature is higher than the maximum temperature in the middle section, the rotation speed of the fan of the indoor unit 2 needs to be increased, that is, when the coil temperature is in the temperature section [ T2, T3 ], the wind speed adjustment level is X, and the rotation speed of the fan of the indoor unit 2 is increased, wherein T2 is 2 ℃, T3 is 20 ℃, and 1 is not less than X is not less than 3. Specifically, the temperature of the coil pipe is set as T, and when T is more than or equal to 2 and less than 4, the wind speed adjusting grade X is 1; when T is more than or equal to 4 and less than 6, the wind speed adjusting grade X is 2; and when T is more than or equal to 6 and less than 20, the wind speed adjusting grade X is 3. Correspondingly, the increased fan rotating speed regulating quantity is matched with different wind speed regulating grades one by one, specifically, the fan rotating speed regulating quantity is set to be delta F, and when X is 1, the delta F is (Fup-F)/5; when X is 2, Δ F is (Fup-F)/3; when X is 3, Δ F is (Fup-F)/2; f is the current fan gear rotating speed, and Fup is the gear rotating speed which is one level higher than F; when F is the highest gear speed, Fup is F + F1, where F1 is the preset fan speed.
Based on the scheme, the rotating speed of the fan is increased by setting three wind speed adjusting grades of 1, 2 and 3, wherein 3 is the highest wind speed adjusting grade, and 1 is the lowest wind speed adjusting grade. When the temperature of the coil pipe meets 2 < T < 4, the temperature of the indoor unit 2 is only slightly high, the requirement on the amount of refrigerant is not very large, and therefore the matched air speed adjustment grade is the lowest and can meet the requirement. When the temperature of the coil pipe meets the condition that T is more than or equal to 6 and less than 20, the temperature of the indoor unit 2 is high at present, and at this time, the refrigeration effect is required to be ensured not to be reduced, and the rotating speed of the fan can be increased to the maximum extent only to increase the refrigerant quantity input. Correspondingly, when the temperature of the coil pipe meets the condition that T is more than or equal to 4 and less than 6, the temperature of the indoor unit 2 is higher, and the air speed adjusting grade of the middle level is correspondingly set to meet the refrigerating requirement. Different wind speed adjustment grades are matched for different coil pipe temperature conditions in the embodiment, the temperature condition of the indoor unit 2 is covered to the maximum extent, and the stability of the refrigeration effect of the air conditioner is ensured.
Preferably, when the coil temperature is less than the minimum temperature of the median interval, the fan speed of the indoor unit 2 needs to be reduced, i.e., when the coil temperature is in the temperature interval of (T4, T1), the wind speed adjustment level is Y, and the fan speed of the indoor unit 2 is reduced, wherein T1 is-2 ℃, T4 is-20 ℃, and-3 is ≦ -1, specifically, the coil temperature is set to T, when-4 < T ≦ -2, the wind speed adjustment level X is-1, when-6 < T ≦ -4, the wind speed adjustment level X is-2, when-20 < T ≦ -6, the wind speed adjustment level X is-3, accordingly, the reduced fan speed adjustment amount is matched for each of the different wind speed adjustment levels, specifically, the fan speed adjustment amount is set to Δ F, when X is-1, Δ F is (F-Fdown)/5, when X is-2, the Δ F is (F-Fdown)/3, when X is-3, Δ F ═ F-Fdown)/2; f is the current fan gear rotating speed, and Fdown is the gear rotating speed which is lower than F by one level; when F is the lowest gear speed, Fdown is F-F2, where F2 is the preset fan speed.
Based on the scheme, three wind speed adjusting grades of-3, -2 and-1 are set to reduce the rotating speed of the fan, wherein-1 is the lowest grade and-3 is the highest grade. When the temperature of the coil pipe meets the condition that T is more than-4 and less than or equal to-2, the temperature of the indoor unit 2 is in a low state, the demand for the refrigerant is relatively small in the state, and therefore the rotating speed of the fan of the indoor unit 2 only needs to be adjusted according to the lowest wind speed adjusting level; when the temperature of the coil pipe meets the condition that T is more than-20 and less than or equal to-6, the temperature of the indoor unit 2 is low at present, and the rotating speed of the fan needs to be reduced to the maximum extent to increase the refrigerant quantity so as to improve the heating effect. Correspondingly, the middle condition of the temperature of the coil pipe is set, the wind speed adjusting grade is also in the middle condition, the temperature interval is subdivided, and the wind speed adjustment is more accurate.
Example 2: a refrigerant flow equalizing control device of an air conditioner.
The utility model provides a refrigerant flow equalizing control device of air conditioner, the air conditioner includes off-premises station and a plurality of indoor set, off-premises station and each be connected with the branch pipe between the indoor set, still include:
the temperature acquisition module is used for acquiring the coil temperature of each indoor unit;
the control module is used for judging a temperature interval in which the temperature of the coil pipe is positioned, confirming the wind speed adjustment grade of the indoor unit according to the temperature interval and a preset relation table, and sending a related control instruction to the indoor unit; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and the indoor unit adjusts the rotating speed of the fan according to the control instruction.
Example 3: an air conditioner.
An air conditioner comprises an outdoor unit 1, a plurality of indoor units 2 and a controller 3, wherein the controller 3 is respectively and electrically connected with the outdoor unit 1 and each indoor unit 2, the controller 3 is preferably a wire controller, a branch pipe 5 is connected between the outdoor unit 1 and each indoor unit 2, and the refrigerant flow equalization control method of the air conditioner is used in the operation of the air conditioner according to embodiment 1.
Based on the scheme, the refrigerant is conveyed between the outdoor unit 1 and each indoor unit 2 through the branch pipes 5, the controller 3 is responsible for sending related control instructions to each indoor unit 2, wherein the related control instructions comprise an operation mode, an operation temperature, an operation wind speed and the like, the indoor units 2 operate according to the instructions of the controller 3, and current operation parameters such as coil pipe temperature, indoor environment temperature and the like are fed back to the controller 3; the outdoor unit 1 performs frequency control, external fan control, expansion valve opening degree control, and the like based on information fed back from the indoor unit 2.
Preferably, the indoor unit 2 includes an indoor unit main unit 201 and a plurality of indoor unit slave units 202, the outdoor unit 1 communicates with the indoor unit main unit 201, the controller 3 controls the indoor unit main unit 201 and the indoor unit slave units 202 simultaneously, the controller 3 is directly connected with the indoor unit main unit 201 and is connected with the indoor unit slave units 202 through a communication switching module, and the communication switching module is preferably a switching box 4.
Example 4: a storage medium.
A storage medium, which includes a stored computer program, and when the computer program runs, controls a device in which the storage medium is located to execute the refrigerant flow equalization control method of the air conditioner according to embodiment 1.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (11)
1. A refrigerant flow equalization control method of an air conditioner comprises an outdoor unit and a plurality of indoor units, wherein a branch pipe is connected between the outdoor unit and each indoor unit, and the control method is characterized by comprising the following steps:
acquiring the coil temperature of each indoor unit;
determining a temperature interval in which the temperature of the coil is;
determining the wind speed adjustment level of each indoor unit according to the temperature interval and a preset relation table; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and adjusting the rotating speed of a fan of the indoor unit according to the air speed adjusting grade so as to adjust the quantity of the refrigerant entering the indoor unit.
2. The refrigerant flow equalization control method of an air conditioner according to claim 1, wherein the adjusting of the fan rotation speed of the indoor unit according to the wind speed adjustment level specifically comprises: and comparing the wind speed adjusting grades of the indoor units, selecting the highest wind speed adjusting grade, adjusting the rotating speed of a fan of the corresponding indoor unit according to the highest wind speed adjusting grade, and not adjusting the other indoor units.
3. The refrigerant flow equalizing control method of claim 1, wherein when the temperature of the coil is in a temperature range of (T1, T2) and the wind speed adjustment level is 0, the indoor unit does not adjust the rotation speed of the fan according to the wind speed adjustment level;
when the temperature interval of the coil pipe is [ T2, T3 ], the wind speed adjusting grade is X, and the indoor unit increases the rotating speed of the fan according to the wind speed adjusting grade X;
when the temperature interval of the coil pipe is (T4, T1) and the wind speed adjusting grade is Y, the indoor unit reduces the rotating speed of the fan according to the wind speed adjusting grade Y;
wherein, T1, T2, T3 and T4 are all preset temperature values, T4 is more than T1 and more than T2 is more than T3, and X, Y are all preset wind speed adjustment grades.
4. The refrigerant flow equalization control method of an air conditioner according to claim 3, wherein the higher the temperature in the temperature interval is, the larger the value of X is, and when the indoor unit increases the fan speed according to the wind speed adjustment level X, the larger X indicates that the wind speed adjustment level is higher, and the higher the wind speed adjustment level is, the larger the fan speed increase is.
5. The refrigerant flow equalization control method of claim 3, wherein when the indoor unit increases the fan speed according to the air speed adjustment level X, the increased fan speed is (Fup-F)/A, where A is a predetermined constant value, F is a current fan gear speed, Fup is a gear speed one step higher than F, and when F is the highest gear speed, Fup is F + F1, and F1 is the predetermined fan speed.
6. The refrigerant flow equalization control method of an air conditioner according to claim 3, wherein the lower the temperature in the temperature range, the smaller the value of Y, and when the indoor unit decreases the fan speed according to the wind speed adjustment level Y, the smaller Y indicates that the wind speed adjustment level is higher, and the higher the wind speed adjustment level is, the larger the fan speed decrease is.
7. The refrigerant flow equalization control method of an air conditioner according to claim 3, wherein when the indoor unit decreases the fan speed according to the wind speed adjustment level Y, the decreased fan speed is (F-Fdown)/B, where B is a predetermined constant value, F is the current fan gear speed, Fdown is a gear speed that is one step lower than F, and when F is the lowest gear speed, Fdown is equal to F-F2, and F2 is the predetermined fan speed.
8. The refrigerant flow equalizing control method of claim 3, wherein when the temperature interval of the coil pipe is (-2, 2), the wind speed adjustment level is 0, and the indoor unit does not adjust the rotation speed of the fan;
when the temperature interval of the coil pipe is [2, 4], the wind speed adjusting grade is 1, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/5;
when the temperature interval of the coil pipe is [4, 6], the wind speed adjusting grade is 2, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/3;
when the temperature interval of the coil pipe is [6, 20 ], the wind speed adjusting grade is 3, and the rotating speed increment of the fan of the indoor unit is (Fup-F)/2;
when the temperature interval of the coil pipe is (-4, -2), the wind speed adjustment grade is-1, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/5;
when the temperature interval of the coil pipe is (-6, -4), the wind speed adjustment grade is-2, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/3;
when the temperature interval of the coil pipe is (-20, -6), the wind speed adjustment grade is-3, and the reduction of the rotating speed of the indoor unit fan is (F-Fdown)/2;
wherein F is the current fan gear speed, Fup is the gear speed one level higher than F, and Fdown is the gear speed one level lower than F.
9. The utility model provides a refrigerant flow equalization control device of air conditioner, the air conditioner includes off-premises station and a plurality of indoor set, off-premises station and each be connected with the branch pipe between the indoor set, its characterized in that still includes:
the temperature acquisition module is used for acquiring the coil temperature of each indoor unit;
the control module is used for judging a temperature interval in which the temperature of the coil pipe is positioned, confirming the wind speed adjustment grade of the indoor unit according to the temperature interval and a preset relation table, and sending a related control instruction to the indoor unit; the relation table records the corresponding relation between the temperature interval and the wind speed adjustment level;
and the indoor unit adjusts the rotating speed of the fan according to the control instruction.
10. An air conditioner, comprising an outdoor unit, a plurality of indoor units and a controller, wherein the controller is respectively electrically connected with the outdoor unit and each indoor unit, and a branch pipe is connected between the outdoor unit and each indoor unit, characterized in that the air conditioner uses the refrigerant flow equalizing control method of the air conditioner according to any one of claims 1 to 8 when in operation.
11. A storage medium, comprising a stored computer program, wherein when the computer program runs, the storage medium is controlled to execute the refrigerant flow equalization control method of the air conditioner according to any one of claims 1 to 8.
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Applicant after: Hisense Air Conditioning Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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Application publication date: 20220218 |