CN111412592A - Multi-connected air conditioner, control method and device thereof and storage medium - Google Patents
Multi-connected air conditioner, control method and device thereof and storage medium Download PDFInfo
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- CN111412592A CN111412592A CN202010136956.XA CN202010136956A CN111412592A CN 111412592 A CN111412592 A CN 111412592A CN 202010136956 A CN202010136956 A CN 202010136956A CN 111412592 A CN111412592 A CN 111412592A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000007613 environmental effect Effects 0.000 claims abstract description 36
- 238000004590 computer program Methods 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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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Abstract
The invention provides a multi-connected air conditioner and a control method, a device and a storage medium thereof, wherein the method comprises the following steps: after the air conditioner is started, judging whether the operation parameters of the internal machines meet preset judgment conditions or not aiming at each internal machine in the internal machines of the air conditioner; and if the operating parameters of the internal machine meet the preset conditions, adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine and the constant humidity dew point temperature corresponding to the ambient temperature of the room where the internal machine is located. The scheme provided by the invention can keep the environmental humidity of the room where different internal machines are positioned within the humidity range comfortable for human body, and improve the comfort of the room where each internal machine is positioned during the refrigeration of the multi-split air conditioner.
Description
Technical Field
The invention relates to the field of control, in particular to a multi-connected air conditioner, a control method and a control device thereof and a storage medium.
Background
The flow control of the refrigerant of the multi-connected air conditioning unit mainly depends on the capacity requirement due to different sizes of the internal machines. At present, the refrigerating capacity demand of the environment where the indoor unit is located is generally judged according to the capacity demand, the capacity demand can only control the change of the rotating speed of the compressor, the actual output of the indoor unit in different rooms cannot be effectively identified, which is equivalent to that the total refrigerant flow can only be controlled, the flow distribution of each indoor unit cannot be effectively controlled, the flow ratio is different, the capacity output is different, the difference of the air outlet temperature of different indoor units can be larger, the difference of the humidity of the environment where each indoor unit is located is not large, the difference of the humidity of each room after being used for a period of time can be larger, the difference of the further body sensing temperature can be larger, and the discomfort feeling of a user can be caused.
Disclosure of Invention
The present invention is mainly intended to overcome the defects of the prior art, and provides a multi-connected air conditioner, a control method, a device and a storage medium thereof, so as to solve the problem of severe humidity changes caused by different outputs of the internal units of the multi-connected air conditioner unit in the prior art.
The invention provides a control method of a multi-connected air conditioner, which comprises the following steps: after the air conditioner is started, acquiring a constant humidity dew point temperature corresponding to the pipe temperature of each internal machine and the ambient temperature of a room where the internal machine is located for each internal machine of the air conditioner; and adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine and the constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located.
Optionally, the method further comprises: before acquiring a constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of a room where the internal machine is located, judging whether the operating parameters of the internal machine meet preset judgment conditions; and if the operating parameters of the internal machine meet the preset conditions, acquiring the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
Optionally, the method further comprises: after the air conditioner is started, when the time for maintaining stable operation reaches preset time, judging whether the operation parameters of the internal machines meet preset judgment conditions or not by aiming at each internal machine in the internal machines of the air conditioner.
Optionally, adjusting the opening degree of a throttling device of the internal machine according to a constant humidity dew point temperature corresponding to a pipe temperature of the internal machine and an ambient temperature of a room where the internal machine is located includes: judging whether the temperature difference value between the pipe temperature of the inner machine and the constant humidity dew point temperature is smaller than or equal to a preset adjusting temperature difference, if so, increasing the opening of a throttling device of the inner machine by a preset opening; and/or judging whether the temperature difference between the constant humidity dew point temperature and the pipe temperature of the internal machine is smaller than or equal to a preset adjusting temperature difference, and if so, reducing the opening degree of a throttling device of the internal machine by a preset opening degree.
Optionally, the preset determination condition includes: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range; and/or extracting the fixed humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the internal machine is positioned from a dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures.
In another aspect, the present invention provides a multi-connected air conditioner control apparatus, including: the acquiring unit is used for acquiring a constant humidity dew point temperature corresponding to the pipe temperature of each internal machine and the ambient temperature of a room where the internal machine is located aiming at each internal machine of the air conditioner after the air conditioner is started; and the adjusting unit is used for adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine acquired by the acquiring unit and the constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located.
Optionally, the method further comprises: the judging unit is used for judging whether the operating parameters of the internal machine meet preset judging conditions or not before the acquiring unit acquires the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located; the obtaining unit is further configured to: and if the judging unit judges that the operating parameters of the internal machine meet the preset conditions, acquiring the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
Optionally, the determining unit is further configured to: after the air conditioner is started, when the time for maintaining stable operation reaches preset time, judging whether the operation parameters of the internal machines meet preset judgment conditions or not by aiming at each internal machine in the internal machines of the air conditioner.
Optionally, the adjusting unit adjusts an opening degree of a throttling device of the internal machine according to a constant humidity dew point temperature corresponding to a pipe temperature of the internal machine and an ambient temperature of a room where the internal machine is located, and includes: judging whether the temperature difference value between the pipe temperature of the inner machine and the constant humidity dew point temperature is smaller than or equal to a preset adjusting temperature difference, if so, increasing the opening of a throttling device of the inner machine by a preset opening; and/or judging whether the temperature difference between the constant humidity dew point temperature and the pipe temperature of the internal machine is smaller than or equal to a preset adjusting temperature difference, and if so, reducing the opening degree of a throttling device of the internal machine by a preset opening degree.
Optionally, the preset determination condition includes: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range; and/or extracting the fixed humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the internal machine is positioned from a dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
In yet another aspect, the present invention provides a multi-connected air conditioner, which includes a processor, a memory, and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the steps of any one of the methods described above.
The invention further provides a multi-connected air conditioner which comprises any one of the multi-connected air conditioner control devices.
According to the technical scheme of the invention, when the operation parameters of each internal machine of the air conditioner meet the preset judgment conditions, the opening degree of the throttling device is adjusted according to the constant humidity dew point temperature corresponding to the pipe temperature and the ambient temperature of the room where the internal machine is located, so that the ambient humidity of the room where different internal machines are located is kept in the humidity range in which the human body feels comfortable, the comfort of the room where each internal machine is located during multi-split air conditioner refrigeration is improved, and the constant humidity adjustment is realized. According to the technical scheme of the invention, the dew point temperature data corresponding to the comfortable humidity of the human body under different working conditions is utilized, the output of the internal machine is controlled by finely adjusting the pipe temperature of the internal machine by adjusting the opening degree of the throttling device, the environmental humidity is kept within the range of the comfortable environmental humidity of the human body, the stability of the environmental humidity during the refrigeration of each internal machine is effectively controlled, and the comfort during the refrigeration is improved. According to the technical scheme of the invention, the constant humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the corresponding internal machine is located is extracted through the dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures, so that the temperature of the internal machine pipe is finely adjusted according to the constant humidity dew point temperature, and the comfortable environmental humidity during refrigeration is kept.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a method for controlling a multi-connected air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a method for controlling a multi-connected air conditioner according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a control method for a multi-connected air conditioner according to an embodiment of the present invention;
fig. 4 is a block diagram of an embodiment of a multi-connected air conditioner control device provided in the present invention;
fig. 5 is a block diagram of another embodiment of the multiple air conditioner control device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic method diagram of an embodiment of a control method of a multi-connected air conditioner according to the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the multi-connected air conditioner control method includes at least step S110 and step S120.
Step S110, after the air conditioner is started, aiming at each internal machine of the internal machines of the air conditioner, obtaining a constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
The temperature of the pipe of the inner machine and/or the ambient temperature of the room in which the inner machine is located is detected by a temperature sensor. The constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located is specifically the dew point temperature corresponding to the preset humidity value range under the environment temperature of the room where the internal machine is located. The preset humidity value range can be a human body comfortable humidity range. The constant humidity dew point temperature corresponding to the environmental temperature of the room where the internal machine is located can be specifically extracted from a dew point temperature parameter table corresponding to preset humidity values at different preset environmental temperatures.
Specifically, a dew point temperature parameter table corresponding to a preset humidity value range at different environmental temperatures is configured in advance, and a dew point temperature corresponding to the preset humidity value range at the environmental temperature of the room where the internal unit is located is searched from the dew point temperature parameter table. For example, the dew point temperature parameter table may be specifically a dew point temperature corresponding to a humidity range of 40% -60% at different room temperatures (i.e. a preset humidity value range), which is generally considered as comfortable for a human being in an environment with 40% -60% humidity conditions.
And step S120, adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine and the constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located.
Specifically, whether the temperature difference between the pipe temperature T of the internal machine and the constant humidity dew point temperature T is smaller than or equal to a preset adjusting temperature difference is judged, and if yes, the opening degree of an electric throttling device of the internal machine is increased by a preset opening degree; and/or judging whether the temperature difference between the constant humidity dew point temperature T and the pipe temperature T of the internal machine is smaller than or equal to a preset adjusting temperature difference, if so, reducing the opening degree of a throttling device of the internal machine by a preset opening degree. The throttling device may be an electronic expansion valve.
For example, the pipe temperature T of the internal machine and the environment temperature T of the environment where the internal machine is located are judgedRing (C)And whether the corresponding temperature difference of the dew point temperature T meets the condition that (T-T) is less than or equal to T0 or not is judged, wherein T0 is a preset adjusting temperature difference, if yes, the step number b of the electronic expansion valve of the internal machine is adjusted to be b + b0, and b0 is a preset adjusting step number. Determining the environmental temperature T of the environment where the internal unit is locatedRing (C)Correspond toWhether the temperature difference between the dew point temperature T and the pipe temperature T of the internal machine meets the condition that (T-T) is less than or equal to T0 or not is judged, wherein T0 is preset adjusting temperature, if yes, the step number b of the electronic expansion valve of the internal machine is adjusted to be b-b0, and b0 is preset adjusting step number.
And the preset judgment condition is the judgment condition for entering the constant humidity regulation. The opening degree of the throttling device of each internal machine of the air conditioner is adjusted according to the constant humidity dew point temperature corresponding to the pipe temperature and the environmental temperature of the room where the internal machine is located, so that the environmental humidity of the room where different internal machines are located is kept in the humidity range in which the human body feels comfortable, the comfort of the room where each internal machine is located during multi-split air conditioner refrigeration is improved, and the constant humidity adjustment is realized.
As shown in fig. 2, according to another embodiment of the present invention, the multi-connected air conditioner control method further includes step S102.
Step S102, after the air conditioner is started, judging whether the operation parameters of the internal machines meet preset judgment conditions or not aiming at each internal machine in the internal machines of the air conditioner.
Specifically, before a constant humidity dew point temperature corresponding to a pipe temperature of the internal machine and an ambient temperature of a room where the internal machine is located is obtained (step S110), whether an operation parameter of the internal machine meets a preset determination condition is judged; and if the operating parameters of the internal machine meet the preset conditions, acquiring the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
Optionally, the operation parameter includes an ambient temperature of a room in which the internal machine is located and/or an opening degree of a throttle device of the internal machine. The preset determination conditions include: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range.
Preferably, the operation parameters of the internal machine are determined to meet the preset determination conditions under the conditions that the ambient temperature of a room where the internal machine is located is less than or equal to a preset determination temperature and the opening degree of a throttling device of the internal machine is within a preset range. Specifically, whether the ambient temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature is detected, and if the ambient temperature of the room where the internal machine is located is less than or equal to the preset judgment temperature, whether the opening degree of a throttling device of the internal machine is within a preset range is judged, for example, the throttling device is an electronic expansion valve, whether the step number B of the electronic expansion valve of the internal machine is within a preset step number range is judged, specifically, whether B is equal to or greater than B2 and equal to or less than B1 is judged, wherein B1 is an upper limit step number of constant humidity adjustment, and B2 is a lower limit step number of constant humidity adjustment; and if the step number of the electronic expansion valve is within a preset step number range, judging whether the operation parameters of the internal machine meet preset judgment conditions.
Preferably, after the air conditioner is started up and after the time for maintaining stable operation reaches the preset time, whether the operation parameters of the internal machines meet the preset judgment conditions or not is judged for each internal machine of the air conditioner. That is, the steps S102, S110 and S120 are performed when the time for the air conditioner to maintain the stable operation reaches the preset time. The stable operation condition may specifically include that the compressor frequency and the electronic expansion valve opening degree do not change any more. For example, when the compressor frequency, the opening of the electronic expansion valve is not changed any more, and the settling time reaches 120s, the constant humidity determination regulation control is entered.
For clearly explaining the technical solution of the present invention, the following describes an execution flow of the multiple air conditioner control method according to a specific embodiment.
Fig. 3 is a schematic method diagram of a control method of a multi-connected air conditioner according to an embodiment of the present invention. The embodiment shown in fig. 3 includes steps S201 to S209.
The air conditioner main control chip stores dew point temperature parameter tables corresponding to different human body comfortable humidity, namely the dew point temperature parameter tables corresponding to preset humidity value ranges (human body comfortable humidity) under different indoor environment temperatures.
After the air conditioning system stably operates for 10min, the humidity is determined and adjusted and judged, and the method specifically comprises the following steps:
step S201, after the air conditioning system operates stably for 10min, the air conditioning system enters constant humidity adjustment control after judging that the time for maintaining the stable operation of the air conditioner (the frequency of the compressor and the opening of the electronic expansion valve do not change) reaches the preset time 120S.
Step S202, respectively detecting and recording the pipe temperatures T1, T2 and T3 (taking 3 internal machines as an example) of each internal machine, wherein the environmental temperature T of the environment where each internal machine is locatedRing 1、TRing 2、TRing 3The electronic expansion valve step numbers b1, b2 and b3 corresponding to the internal machines.
Step S203, judging the environment temperature T of the environment of each internal machineRing (C)(TRing 1、TRing 2、TRing 3) Whether or not T is satisfiedRing (C)And (4) setting the judgment temperature to be less than or equal to the preset judgment temperature, if so, entering the step S204, and if not, exiting the control flow.
Step S204, if the environment temperature of any internal machine meets TRing (C)Less than or equal to the preset judgment temperature, and extracting corresponding dew point temperature T from the dew point temperature parameter table corresponding to different human body comfortable humidities according to the environment temperature of the environment where the temperature is positioned, namely extracting TRing 1Corresponding dew point temperature T1, extracting TRing 2Corresponding dew point temperature T2, extracting TRing 3Corresponding dew point temperature t 3.
In step S205, it is determined whether the electronic expansion valve step number B (B1, B2, B3) of each internal machine satisfies the lower limit step number B2 of the constant humidity adjustment and the upper limit step number B1 of the constant humidity adjustment (B2 and B1), if yes, the process proceeds to step S206, and if no, the control flow exits.
Step S206, if the step B of the electronic expansion valve of any internal machine meets the condition that the step B is not less than the lower limit step B2 and not more than the upper limit step B1 of the constant humidity adjustment, the pipe temperature T and the environment temperature T of the environment where the pipe temperature T is located are judgedRing (C)And (4) whether the corresponding temperature difference of the dew point temperature T meets a preset adjusting temperature difference T0 of which the temperature (T-T) is less than or equal to the preset adjusting temperature difference T0, if so, the step S207 is executed, and if not, the step S208 is executed.
Step S207, determining the environment temperature T of the corresponding internal machineRing (C)And (3) whether the temperature difference between the corresponding dew point temperature T and the pipe temperature T meets a preset adjusting temperature difference T0 of (T-T) or less, if so, entering the next step of adjusting, and if not, entering the step S209.
And step S208, adjusting the step number b of the electronic expansion valve of the corresponding internal machine to be b + b0, wherein b0 is a preset adjustment step number, and after all internal machines are adjusted, the constant humidity adjustment control is quitted.
And step S209, adjusting the step number b of the electronic expansion valve of the corresponding internal machine to be b-b0, wherein b0 is a preset adjustment step number, and after all internal machines are adjusted, quitting the constant humidity adjustment control.
Fig. 4 is a block diagram of an embodiment of a multi-connected air conditioner control device provided in the present invention. As shown in fig. 4, the multi-connected air conditioner control device 100 includes an acquisition unit 110 and an adjustment unit 120.
The obtaining unit 110 is configured to obtain, for each of the internal machines of the air conditioner, a constant humidity dew point temperature corresponding to a pipe temperature of the internal machine and an ambient temperature of a room where the internal machine is located after the air conditioner is turned on.
The acquisition unit 110 may detect the pipe temperature of the indoor unit and/or the ambient temperature of the room in which the indoor unit is located by a temperature sensor. The constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located is specifically the dew point temperature corresponding to the preset humidity value range under the environment temperature of the room where the internal machine is located. The preset humidity value range can be a human body comfortable humidity range. The constant humidity dew point temperature corresponding to the environmental temperature of the room where the internal machine is located can be specifically extracted from a dew point temperature parameter table corresponding to preset humidity values at different preset environmental temperatures.
Specifically, the dew point temperature parameter tables corresponding to the preset humidity value ranges at different environmental temperatures are configured in advance, and the obtaining unit 110 may search the dew point temperature corresponding to the preset humidity value range at the environmental temperature of the room where the internal machine is located from the dew point temperature parameter tables. For example, the dew point temperature parameter table may be specifically a dew point temperature corresponding to a humidity range of 40% -60% at different room temperatures (i.e. a preset humidity value range), which is generally considered as comfortable for a human being in an environment with 40% -60% humidity conditions.
The adjusting unit 120 is configured to adjust an opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine acquired by the acquiring unit 110 and a constant humidity dew point temperature corresponding to an ambient temperature of a room where the internal machine is located.
Specifically, it is determined whether the temperature difference between the tube temperature T of the internal machine and the constant humidity dew point temperature T is less than or equal to a preset adjustment temperature difference, and if so, the adjustment unit 120 increases the opening degree of the electric throttling device of the internal machine by a preset opening degree; and/or judging whether the temperature difference between the constant humidity dew point temperature T and the pipe temperature T of the internal machine is less than or equal to a preset adjusting temperature difference, if so, the adjusting unit 120 reduces the opening degree of the throttling device of the internal machine by a preset opening degree. The throttling device may be an electronic expansion valve.
For example, the pipe temperature T of the internal machine and the environment temperature T of the environment where the internal machine is located are judgedRing (C)And whether the corresponding temperature difference of the dew point temperature T meets the condition that (T-T) is less than or equal to T0 or not is judged, wherein T0 is a preset adjusting temperature difference, if yes, the step number b of the electronic expansion valve of the internal machine is adjusted to be b + b0, and b0 is a preset adjusting step number. Determining the environmental temperature T of the environment where the internal unit is locatedRing (C)And whether the temperature difference between the corresponding dew point temperature T and the pipe temperature T of the internal machine meets the condition that (T-T) is less than or equal to T0 or not is judged, wherein T0 is preset adjusting temperature, if yes, the step number b of the electronic expansion valve of the internal machine is adjusted to be b-b0, and b0 is preset adjusting step number.
And the preset judgment condition is the judgment condition for entering the constant humidity regulation. According to the invention, the opening degree of the throttling device of each internal machine of the air conditioner is adjusted according to the constant humidity dew point temperature corresponding to the pipe temperature and the environmental temperature of the room in which the internal machine is positioned, so that the environmental humidity of the room in which different internal machines are positioned is kept in the humidity range in which the human body feels comfortable, the comfort of the room in which each internal machine is positioned during multi-split air conditioner refrigeration is improved, and the constant humidity adjustment is realized.
Fig. 5 is a block diagram of another embodiment of the multiple air conditioner control device according to the present invention. As shown in fig. 5, the multi-connected air conditioner control device 100 further includes a determination unit 102.
The determining unit 102 is configured to determine, for each of the internal machines of the air conditioner, whether an operation parameter of the internal machine satisfies a preset determination condition after the air conditioner is turned on.
Specifically, the determining unit 102 determines whether the operating parameter of the internal machine meets a preset determining condition before the obtaining unit 110 obtains the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located; if the determining unit 102 determines that the operating parameter of the internal machine meets the preset condition, the obtaining unit 110 obtains a constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
Optionally, the operation parameter includes an ambient temperature of a room in which the internal machine is located and/or an opening degree of a throttle device of the internal machine. The preset determination conditions include: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range.
Preferably, the determining unit 102 determines that the operating parameter of the internal machine satisfies the preset determining condition when determining that the ambient temperature of the room where the internal machine is located is equal to or lower than a preset determining temperature and the opening degree of the throttling device of the internal machine is within a preset range. Specifically, it is detected whether the ambient temperature of the room in which the internal machine is located is less than or equal to a preset determination temperature, and if the ambient temperature of the room in which the internal machine is located is less than or equal to the preset determination temperature, the determining unit 102 determines whether the opening degree of a throttling device of the internal machine is within a preset range, for example, the throttling device is an electronic expansion valve, determines whether the step number B of the electronic expansion valve of the internal machine is within a preset step number range, specifically, determines whether B is equal to or greater than B2 and equal to or less than B1, where B1 is an upper limit step number of constant humidity adjustment, and B2 is a lower limit step number of constant humidity adjustment; and if the step number of the electronic expansion valve is within a preset step number range, judging whether the operation parameters of the internal machine meet preset judgment conditions.
Preferably, the judging unit 102 is further configured to: after the air conditioner is started, when the time for maintaining stable operation reaches preset time, judging whether the operation parameters of the internal machines meet preset judgment conditions or not by aiming at each internal machine in the internal machines of the air conditioner. That is to say, after the time that the air conditioner maintains stable operation reaches the preset time, the determining unit 102 determines whether the operation parameters of the internal machines of the air conditioner meet the preset determining conditions for each internal machine, if the determining unit 102 determines that the operation parameters of the internal machines meet the preset conditions, the obtaining unit 110 obtains the constant humidity dew point temperature corresponding to the tube temperature of the internal machine and the ambient temperature of the room where the internal machine is located, and the adjusting unit 120 adjusts the opening degree of the throttling device of the internal machine according to the constant humidity dew point temperature corresponding to the tube temperature of the internal machine and the ambient temperature of the room where the internal machine is located. The stable operation condition may specifically include that the compressor frequency and the electronic expansion valve opening degree do not change any more. For example, when the compressor frequency, the opening of the electronic expansion valve is not changed any more, and the settling time reaches 120s, the constant humidity determination regulation control is entered.
The invention also provides a storage medium corresponding to the multi-connected air conditioner control method, wherein a computer program is stored on the storage medium, and the computer program is used for realizing the steps of any one of the methods when being executed by a processor.
The invention also provides a multi-connected air conditioner corresponding to the multi-connected air conditioner control method, which comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, wherein when the processor executes the program, the steps of any one of the methods are realized.
The invention also provides a multi-connected air conditioner corresponding to the multi-connected air conditioner control device, which comprises any one of the multi-connected air conditioner control devices.
Therefore, according to the scheme provided by the invention, when the operation parameters of each internal machine of the air conditioner meet the preset judgment conditions, the opening degree of the throttling device is adjusted according to the constant humidity dew point temperature corresponding to the pipe temperature and the ambient temperature of the room where the internal machine is located, so that the ambient humidity of the room where different internal machines are located is kept in the humidity range in which the human body feels comfortable, the comfort of the room where each internal machine is located during multi-split air conditioner refrigeration is improved, and the constant humidity adjustment is realized. According to the technical scheme of the invention, the dew point temperature data corresponding to the comfortable humidity of the human body under different working conditions is utilized, the output of the internal machine is controlled by finely adjusting the pipe temperature of the internal machine by adjusting the opening degree of the throttling device, the environmental humidity is kept within the range of the comfortable environmental humidity of the human body, the stability of the environmental humidity during the refrigeration of each internal machine is effectively controlled, and the comfort during the refrigeration is improved. According to the technical scheme of the invention, the constant humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the corresponding internal machine is located is extracted through the dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures, so that the temperature of the internal machine pipe is finely adjusted according to the constant humidity dew point temperature, and the comfortable environmental humidity during refrigeration is kept.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A control method for a multi-connected air conditioner is characterized by comprising the following steps:
after the air conditioner is started, acquiring a constant humidity dew point temperature corresponding to the pipe temperature of each internal machine and the ambient temperature of a room where the internal machine is located for each internal machine of the air conditioner;
and adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine and the constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located.
2. The method of claim 1, further comprising:
before acquiring a constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of a room where the internal machine is located, judging whether the operating parameters of the internal machine meet preset judgment conditions;
and if the operating parameters of the internal machine meet the preset conditions, acquiring the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
3. The method according to claim 1 or 2, wherein adjusting the opening degree of the throttle device of the internal machine according to the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room in which the internal machine is located comprises:
judging whether the temperature difference value between the pipe temperature of the inner machine and the constant humidity dew point temperature is smaller than or equal to a preset adjusting temperature difference, if so, increasing the opening of a throttling device of the inner machine by a preset opening;
and/or the presence of a gas in the gas,
and judging whether the temperature difference between the constant humidity dew-point temperature and the pipe temperature of the internal machine is less than or equal to a preset adjusting temperature difference, if so, reducing the opening of a throttling device of the internal machine by a preset opening.
4. The method according to any one of claims 1 to 3,
the preset determination conditions include: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range;
and/or the presence of a gas in the gas,
and the fixed humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the internal machine is located is extracted from a dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures.
5. A multi-connected air conditioner control device is characterized by comprising:
the acquiring unit is used for acquiring a constant humidity dew point temperature corresponding to the pipe temperature of each internal machine and the ambient temperature of a room where the internal machine is located aiming at each internal machine of the air conditioner after the air conditioner is started;
and the adjusting unit is used for adjusting the opening degree of a throttling device of the internal machine according to the pipe temperature of the internal machine acquired by the acquiring unit and the constant humidity dew point temperature corresponding to the environment temperature of the room where the internal machine is located.
6. The apparatus of claim 5, further comprising:
the judging unit is used for judging whether the operating parameters of the internal machine meet preset judging conditions or not before the acquiring unit acquires the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located;
the obtaining unit is further configured to: and if the judging unit judges that the operating parameters of the internal machine meet the preset conditions, acquiring the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room where the internal machine is located.
7. The device according to claim 5 or 6, wherein the adjusting unit adjusts the opening degree of the throttle device of the internal machine according to the constant humidity dew point temperature corresponding to the pipe temperature of the internal machine and the ambient temperature of the room in which the internal machine is located, and comprises:
judging whether the temperature difference value between the pipe temperature of the inner machine and the constant humidity dew point temperature is smaller than or equal to a preset adjusting temperature difference, if so, increasing the opening of a throttling device of the inner machine by a preset opening;
and/or the presence of a gas in the gas,
and judging whether the temperature difference between the constant humidity dew-point temperature and the pipe temperature of the internal machine is less than or equal to a preset adjusting temperature difference, if so, reducing the opening of a throttling device of the internal machine by a preset opening.
8. The apparatus according to any one of claims 5 to 7,
the preset determination conditions include: the environment temperature of a room where the internal machine is located is less than or equal to a preset judgment temperature, and/or the opening degree of a throttling device of the internal machine is within a preset range;
and/or the presence of a gas in the gas,
and the fixed humidity dew point temperature corresponding to the preset humidity value at the environmental temperature of the room where the internal machine is located is extracted from a dew point temperature parameter table corresponding to the preset humidity value at different preset environmental temperatures.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. A multi-connected air conditioner comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to perform the steps of the method according to any one of claims 1 to 4 or comprises the multi-connected air conditioner control device according to any one of claims 5 to 8.
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