CN113834180B - Self-adaptive method, device and system for multi-split long-connected pipe output - Google Patents
Self-adaptive method, device and system for multi-split long-connected pipe output Download PDFInfo
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- CN113834180B CN113834180B CN202111216253.9A CN202111216253A CN113834180B CN 113834180 B CN113834180 B CN 113834180B CN 202111216253 A CN202111216253 A CN 202111216253A CN 113834180 B CN113834180 B CN 113834180B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—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
Abstract
The invention provides a multi-connected machine long connecting pipe output self-adaptive method, a device and a system, wherein the multi-connected machine long connecting pipe output self-adaptive method comprises the following steps: s1: refrigerating operation of the multi-split air conditioner; s2: detecting and acquiring the pipe temperature information of the internal machine, and judging whether the actual output effect of the internal machine is poor or not; s3: if the actual output effect of the operation of the internal machine is poor, judging whether the pressure loss from the internal machine to the external machine is reduced greatly; if yes, go to S4; if not, go to S5; s4: adjusting the target low-pressure temperature, and reducing the target low-pressure interval for control; s5: and maintaining the current control to continue running. The multi-connected long connecting pipe output self-adaptive method disclosed by the invention increases the output of the external machine by adjusting the target low-pressure temperature according to the pressure loss and the internal machine output effect, has strong self-adaptive capacity when the multi-connected long connecting pipe is output, can ensure the refrigeration effect and improves the use comfort of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a multi-split long connecting pipe output self-adaption method, device and system.
Background
The multi-split air conditioner is used more and more frequently in people's life and work, and this kind of equipment is that a unit passes through a connecting pipe and drives a plurality of indoor sets operation, and when the room area is big, for example the office space, connecting pipe length can correspond and increase, and the energy can produce a large amount of energy losses by connecting pipe transportation to indoor set in-process like this, leads to indoor set operation effect not good.
At present, in a refrigeration mode, a multi-split air conditioner outputs according to target low pressure, the target low pressure is divided into different sections according to the outer ring temperature, when the actual low pressure is higher than the target low pressure, the frequency of a compressor is increased to increase the output, and when the actual low pressure is lower than the target low pressure, the frequency of the compressor is decreased to reduce the output. When the connecting pipe is longer or the pipeline pressure loss is larger, the actual low pressure easily reaches the target low pressure interval, the output of the compressor is insufficient at the moment, the refrigerating effect is poor, the output of the unit is not increased, and the comfort of a user is not high in the using process.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, one objective of the present invention is to provide a multi-split long connecting pipe output adaptive method, which determines an actual output effect of an internal unit by detecting an internal unit pipe temperature, determines a pressure loss condition by detecting an internal unit inlet pipe temperature and a low pressure saturation temperature difference value, changes a target low pressure temperature according to the actual effect of the internal unit and the pressure loss condition, increases unit output, and improves a refrigeration effect.
The second purpose of the invention is to provide a multi-split long-connected pipe conveying self-adaptive device.
A third object of the present invention is to provide a multi-split system.
In order to achieve the above object, a first aspect of the present invention provides a multi-split long connecting pipe output adaptive method, which is implemented as follows:
a multi-split long connecting pipe output self-adaptive method comprises the following steps:
s1: refrigerating operation of the multi-split air conditioner;
s2: detecting and acquiring the temperature information of the inner machine pipe, and judging whether the actual output effect of the inner machine is poor or not;
s3: if the actual output effect of the operation of the internal machine is poor, judging whether the pressure loss from the internal machine to the external machine is reduced greatly; if yes, go to S4; if not, go to S5;
s4: adjusting the target low-pressure temperature, and reducing the target low-pressure interval for control;
s5: and maintaining the current control to continue running.
The multi-connected long connecting pipe output self-adaptive method disclosed by the invention increases the output of the external machine by adjusting the target low-pressure temperature according to the pressure loss and the internal machine output effect, has strong self-adaptive capacity when the multi-connected long connecting pipe is output, can ensure the refrigeration effect and improves the use comfort of users.
Further, in step S2, it is determined whether or not the internal machine average tube temperature T is in operationAverageIf the average tube temperature T of the inner machine is higher than A, the actual output effect of the inner machine is poor, and the process enters S3, if the actual output effect of the inner machine is not good, the process enters S5, wherein the average tube temperature T of the inner machine is operatedAverageThe average value of the inlet pipe temperature, the middle pipe temperature and the outlet pipe temperature in all running machines is referred, and A is a preset empirical parameter.
The device can quickly and accurately judge whether the actual output effect of the internal machine is poor, the judgment is accurate, the control is reliable, and the working reliability of the multi-connected-line long connecting pipe output self-adaptive method is ensured.
Further, in step S3, when the average inlet pipe temperature of the internal machines during operation-the average low-pressure temperature of the system > B, the pressure loss from the internal machines to the external machines is decreased greatly, where the average inlet pipe temperature of the internal machines during operation refers to the average value of the inlet pipe temperatures of all the internal machines during operation, and B is a preset empirical parameter.
The pressure loss condition is judged according to the difference value between the temperature of the inner inlet pipe and the low-pressure saturation temperature, the method is simple and efficient, and the working reliability of the multi-split long connecting pipe output self-adaptive method is further improved.
Further, between step S3 and step S4, step S3A is added,
S3A: judging whether the current frequency f of the compressor is less than C, if so, entering S4; if not, the process goes to S5, where C is a preset empirical parameter.
The setting limits the running frequency of the compressor, thereby ensuring the reliable control of increasing the output of the external unit by reducing the target low-pressure region, avoiding the influence caused by overhigh running frequency of the compressor, and further improving the working reliability of the multi-connected long connecting pipe output self-adaptive method.
Further, in step S4, the target low-pressure temperature [ X, Y ] is decreased to [ X- Δ T, Y- Δ T ], where X denotes an upper temperature interval limit of the target low-pressure, Y denotes a lower temperature interval limit of the target low-pressure, and Δ T is a preset empirical parameter.
According to the setting, a reasonable target low-pressure section cooling value is set, normal refrigeration work control is conveniently, quickly and efficiently performed, the control logic of the multi-split long connecting pipe output self-adaption method is optimized, and the comfort of a user is guaranteed.
Further, when the time T is continued2Detecting average tube temperature T of running inner machineAverage outIf the temperature is more than A, the average inlet pipe temperature of the internal machine is operated, the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is less than C, the step S4 is executed, wherein T2The value range of (A) is 1-8 min.
By detecting the preset length time, misjudgment is avoided, the multi-split air conditioner is determined to be in a state that the output effect of an internal machine is poor, the pressure loss is large, and the compressor is in a frequency-raising state, so that the adjustment accuracy and reliability of the multi-split air conditioner long connecting pipe output self-adaptive method are ensured.
Further, after the target low pressure temperature is adjusted, if the low pressure temperature is within the current target low pressure temperature range, the frequency is maintained, and if the condition for adjusting the target low pressure temperature is satisfied again, the target low pressure temperature is adjusted downward again in step S4.
The arrangement ensures that the multi-split long connecting pipe output self-adaptive method disclosed by the invention can quickly and reliably complete the self-adaptive adjustment of the multi-split refrigerating operation, avoids redundant complex control logic and reduces the resource waste.
Further, in step S4, after the target low-pressure temperature is adjusted, if the low-pressure temperature is not in the current target low-pressure temperature range, the frequency is increased by E% of the current frequency, and if the frequency is already the highest, the external fan is increased to the highest rotation speed, where E is a preset empirical parameter.
The arrangement ensures that the multi-split long connecting pipe output self-adaptive method provided by the invention adjusts and controls for multiple times according to the actual working condition after the target low-pressure temperature is adjusted, and ensures the reliability of the refrigeration operation of the multi-split system.
Compared with the prior art, the multi-split long connecting pipe output self-adaptive method has the following advantages:
(1) the invention relates to a multi-connected machine long connecting pipe output self-adaptive method, which comprises the steps of firstly, judging whether the average pipe temperature of an operating internal machine is overhigh through detection, and if the average pipe temperature is overhigh, indicating that the overall operation effect of a system is poor; then, whether the difference value between the average inlet pipe temperature of the running internal machine and the average low pressure of the system is too large is judged through detection, and the too large difference value indicates that the pressure loss from the internal machine to the external machine is large and the connecting pipe is long; then when the frequency of the compressor is less than a certain value, indicating that the compressor has an ascending frequency space; when the information that the output effect of the internal machine is poor, the pressure loss is large and the frequency can be increased is obtained through detection and judgment, the actual low-pressure temperature reaches the target low-pressure temperature range through reducing the target low-pressure temperature range and increasing the frequency of the compressor, the output of the refrigerating capacity is enhanced, and the working reliability of the multi-connected machine long connecting pipe output self-adaptive method is ensured.
(2) The multi-connected unit long connecting pipe output self-adaptive method can self-adaptively execute a control program for reducing the target low-pressure temperature only by detecting the operation parameters and judging certain data, and adjust the output of the compressor according to the control program, thereby enhancing the refrigerating capacity, having strong self-adaptation, effectively reducing the cost and greatly improving the overall performance of the multi-connected unit.
The second aspect of the present invention provides a multi-split long-connected pipe delivery adaptive device, including:
an acquisition unit capable of acquiring the average tube temperature T of the running internal machineAverageAverage inlet pipe temperature of an operating internal machine, average low-pressure temperature of a system and current frequency f of a compressor;
a judging unit: judging whether to run the average tube temperature T of the internal machine or not according to the information detected by the acquisition unitAverageMore than A, the average inlet pipe temperature of the running internal machine-the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is less than C,
and the control unit is used for controlling the multi-split system operation method to operate according to the control condition of the reduced target low-voltage interval or continuously operate according to the maintained current control condition according to the result of the judging unit.
According to the multi-split long-connected pipe output self-adaptive device provided by the embodiment of the invention, the change of the actual effect and the pressure loss condition of the internal machine is judged through the information detected by the acquisition unit, and when the judgment condition is met, the control of the multi-split system is carried out by reducing the target low-pressure temperature range, so that the output of the machine set is increased, the output effect is improved, and the use comfort of a user is improved.
A third aspect of the present invention is to provide a multi-split system, comprising a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the processor is capable of executing the steps of the multi-split long-stub output adaptive method as described above
Compared with the prior art, the multi-split system and the multi-split long connecting pipe output self-adaptive method have the same advantages, and are not described herein again.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a logic control schematic diagram of a multi-split long connecting pipe output adaptive method according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, objectives and functions of the present invention easy to understand, embodiments of the present invention will be described in detail with reference to the specific drawings.
As shown in fig. 1, the invention discloses a multi-split long connecting pipe output self-adaptive method, which comprises the following steps:
s1: refrigerating operation of the multi-split air conditioner;
s2: detecting and acquiring the pipe temperature information of the internal machine, and judging whether the actual output effect of the internal machine is poor or not;
s3: if the actual output effect of the operation of the internal machine is poor, judging whether the pressure loss from the internal machine to the external machine is reduced greatly; if yes, go to S4; if not, go to S5;
s4: adjusting the target low-pressure temperature, and reducing the target low-pressure temperature interval for control;
s5: and maintaining the current control to continue running.
The invention discloses a multi-connected machine long connecting pipe output self-adaptive method, which is characterized in that when a multi-connected machine is in refrigerating operation, whether the actual output effect of an inner machine is poor is judged according to detected inner machine pipe temperature information, for example, if certain measuring points of the inner machine pipe temperature are greater than a preset threshold value, or the average measuring point of the inner machine pipe temperature is greater than an average temperature preset threshold value, or if the difference value of the inner machine pipe temperature is greater than a corresponding preset difference threshold value, the actual output effect of the inner machine is poor; under the condition that the actual output effect of the inner machine is poor, whether the pressure loss from the inner machine to the outer machine is reduced greatly is judged, if the pressure loss is reduced greatly, the inner machine connecting pipe is longer, under the working condition, the actual output effect of the inner machine is not ideal, and the inner machine connecting pipe is longer, the control is performed by reducing a target low-pressure temperature range, the capacity output is enhanced, and the actual output effect is ensured; otherwise, the target low-pressure temperature is not adjusted, and the original control condition is maintained to continue the control.
The multi-connected long connecting pipe output self-adaptive method disclosed by the invention increases the output of the external machine by adjusting the target low-pressure temperature according to the pressure loss and the internal machine output effect, has strong self-adaptive capacity when the multi-connected long connecting pipe is output, can ensure the refrigeration effect and improves the use comfort of users.
As a preferred example of the present invention, in step S2, the cooling operation is performed for a preset time T1Then, detecting and acquiring the temperature information of the inner machine pipe, T1Is a preset empirical parameter. As an example of the present invention, T1The value range of (a) is 5min to 30min, preferably, T1Taking for 15 min.
The setting ensures that the multi-split system operates stably when the temperature information of the inner tubes is detected and acquired, ensures that the temperature information of the inner tubes is detected and acquired accurately, and improves the reliability of the multi-split long-tube connection output self-adaptive method.
As a preferred example of the present invention, in step S2, it is determined whether or not the internal averaging tube is operatedTemperature TAverageIf the average tube temperature T of the inner machine is higher than A, the actual output effect of the inner machine is poor, and the process goes to S3, if the actual output effect of the inner machine is not good, the process goes to S5, wherein the average tube temperature T of the inner machine is operatedAverageThe average value of the inlet pipe temperature, the middle pipe temperature and the outlet pipe temperature in all running machines is referred, and A is a preset empirical parameter.
The setting discloses a specific scheme for judging whether the actual output effect of the inner machine is poor or not, and the average pipe temperature T of the inner machine is operatedAverageComparing with empirical parameter A, when running the average tube temperature T of the internal machineAverageWhen the value is higher, the overall effect is poor, and the parameter A can be obtained by manual setting or table lookup according to the model, power, environment temperature, set temperature and other information and by combining experience. The device can quickly and accurately judge whether the actual output effect of the internal machine is poor, the judgment is accurate, the control is reliable, and the working reliability of the multi-connected-line long connecting pipe output self-adaptive method is ensured.
As a preferred example of the present invention, in step S3, when the average inlet pipe temperature of the internal machine is running, i.e. the average inlet pipe temperature of all the internal machines is the average value, the average low-pressure temperature of the system is greater than B, the pressure loss of the internal machine to the external machine is greatly reduced, wherein B is a preset empirical parameter.
The setting discloses a specific scheme for judging whether the pressure loss from the inner machine to the outer machine is greatly reduced, when the difference value between the average inlet pipe temperature of the running inner machine and the average low-pressure temperature of the system is large, the pressure loss from the inner machine to the outer machine is large, the connecting pipe is long, and the selection of the parameter B can be obtained by manual setting or table look-up according to the information such as the model, power, ambient temperature, set temperature and the like in combination with experience. The pressure loss condition is judged according to the difference value between the temperature of the inner inlet pipe and the low-pressure saturation temperature, the method is simple and efficient, and the working reliability of the multi-connected long connecting pipe output self-adaptive method is further improved.
As a preferred example of the present invention, between step S3 and step S4, step S3A is added,
S3A: judging whether the current frequency f of the compressor is less than C, if so, entering S4; if not, the process goes to S5, where C is a preset empirical parameter.
When the working state that the actual output effect of the internal machine is poor and the connecting pipe of the internal machine is long is judged, whether the frequency of the compressor is smaller than the common preset value C or not is judged, if yes, the frequency of the compressor is indicated to have an ascending space, at the moment, the output effect of the internal machine is poor, the pressure loss is large, the frequency is not increased, the output of the external machine is indicated to be small, the output of the external machine needs to be increased, and therefore, in the step S4, the target low-pressure temperature is adjusted, the target low-pressure temperature range is reduced, the frequency of the compressor is increased, the actual low-pressure temperature reaches the target low-pressure temperature range, and the refrigerating capacity output is enhanced.
The setting limits the operating frequency of the compressor, thereby ensuring the reliable control of increasing the output of the external unit by reducing the target low-pressure temperature range, avoiding the influence caused by overhigh operating frequency of the compressor, and further improving the working reliability of the multi-connected long connecting pipe output self-adaptive method.
As a preferred example of the present invention, in step S4, the target low-pressure temperature [ X, Y ] is decreased to [ X- Δ T, Y- Δ T ], where X denotes an upper limit of a temperature interval of the target low-pressure, Y denotes a lower limit of the temperature interval of the target low-pressure, and Δ T is a preset empirical parameter.
According to the setting, a reasonable cooling value of a target low-pressure temperature range is set, so that the normal refrigeration work control can be conveniently and quickly and efficiently carried out, the control logic of the multi-split long connecting pipe output self-adaptive method is optimized, and the use comfort of a user is ensured.
As a preferred example of the invention, A has a value in the range of 14-30 ℃, preferably 17 ℃; the value range of B is 9-20 ℃, and the preferred value is 11 ℃; the value range of C is 75 Hz-140 Hz, and the preferred value is 110 Hz; the value range of delta T is 0-5 ℃, and the preferred value is 3 ℃.
As a preferred example of the present invention, when the time T is continuous2Detecting average tube temperature T of running inner machineAverageIf the temperature is more than A, the average inlet pipe temperature of the internal machine is operated, the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is less than C, the step S4 is executed, wherein T2The value range of (A) is 1-8 min. As an example of the present invention, Q is taken to be 3min when 3m is continuously providedin is detected, the average tube temperature T of the inner machine is operatedAverageAnd if the average inlet pipe temperature of the internal machine is greater than A and the average low-pressure temperature of the system is greater than B, and the current frequency f of the compressor is less than C, executing a step S4, and reducing the target low-pressure temperature interval for control.
By detecting the preset length time, misjudgment is avoided, the multi-split air conditioner is determined to be in a state that the output effect of an internal machine is poor, the pressure loss is large, and the compressor is in a frequency-raising state, so that the adjustment accuracy and reliability of the multi-split air conditioner long connecting pipe output self-adaptive method are ensured.
As a preferred example of the present invention, after the target low pressure temperature is adjusted, if the low pressure temperature is within the current target low pressure temperature, the frequency is maintained, and when the condition for adjusting the target low pressure temperature is satisfied again, the target low pressure temperature is adjusted downward again in step S4.
The arrangement ensures that the multi-split long connecting pipe output self-adaptive method disclosed by the invention can quickly and reliably complete the self-adaptive adjustment of the multi-split refrigerating operation, avoids redundant complex control logic and reduces the resource waste.
As a preferred example of the present invention, in step S4, after the target low-pressure temperature is adjusted, if the low-pressure temperature is not within the current target low-pressure temperature range, the frequency is increased by E% of the current frequency, and if the frequency is already the highest, the outer fan is raised to the highest rotation speed, where E is a preset empirical parameter. As an example of the invention, the value range of E is 5-13, preferably E is 10. The arrangement ensures that the multi-split long connecting pipe output self-adaptive method provided by the invention adjusts and controls for multiple times according to the actual working condition after the target low-pressure temperature is adjusted, and ensures the reliability of the refrigeration operation of the multi-split system.
As an example of the present invention, in step S4, after the target low-pressure temperature is adjusted, if the low-pressure temperature is not in the current target low-pressure temperature range, and the compressor operation frequency is the highest and the external fan is the highest rotation speed at this time, the frequency and the fan maintain the highest gear.
As an example of the invention, after a certain multi-split system is operated for 15min in a refrigeration mode, the average pipe temperature of all the operating internal machines is detected for 3min to be 18 ℃, A is 17 ℃, the average pipe temperature of the operating internal machines is 15 ℃, the low-pressure temperature is 4 ℃, the difference value is 11 ℃, B is 10 ℃, the frequency is 85Hz, and the highest frequency C is 110 Hz. The target low-pressure temperature is adjusted from 0 ℃ to 5 ℃ to 3 ℃ and 2 ℃, the delta T is 3 ℃, then the frequency of the compressor is increased from 85Hz to 110Hz, and the average tube temperature of the running inner machine is decreased from 18 ℃ to 16 ℃, so that the purpose of enhancing the capacity output is achieved, the actual output effect of the inner machine is improved, and the comfort level of the user is improved.
In order to realize the multi-split long connecting pipe output self-adaption method of the embodiment, the invention further provides a multi-split long connecting pipe output self-adaption device.
The embodiment of the invention provides a multi-split long-connected pipe output self-adaptive device, which comprises:
an acquisition unit capable of acquiring the average tube temperature T of the running internal machineAverageAverage inlet pipe temperature of an operating internal machine, average low-pressure temperature of a system and current frequency f of a compressor;
a judging unit: judging whether to run the average tube temperature T of the internal machine or not according to the information detected by the acquisition unitAverage outMore than A, the average inlet pipe temperature of the running inner machine-the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is less than C,
and the control unit is used for controlling the multi-split system operation method to operate according to the control condition of reducing the target low-pressure temperature interval or continuously operate according to the control condition of maintaining the current control condition according to the result of the judging unit.
According to the multi-split long-connected pipe output self-adaptive device disclosed by the embodiment of the invention, the change of the actual effect and the pressure loss condition of the internal unit is judged through the information detected by the acquisition unit, and when the judgment condition is met, the control of the multi-split system is carried out through reducing the target low-pressure temperature region, so that the output of the unit is increased, the output effect is improved, and the use comfort of a user is improved.
As a preferred example of the present invention, the present invention further provides a storage medium storing computer-readable program instructions that, when executed by a processor, implement the steps of the multi-split persistent output adaptation method provided in the above-described embodiment.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. 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: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
As a preferred example of the present invention, the present invention further provides a multi-split system, including a computer readable storage medium storing a computer program and a processor, where the computer program is read and executed by the processor, and the processor is capable of executing the steps of the multi-split long-stub output adaptive method described in the above embodiments.
The air conditioner in the embodiment comprises a controller, a plurality of sensors with different functions and a timer, wherein the controller is provided with at least one software functional module which can be stored in the controller in the form of software or firmware (firmware) or is solidified in an Operating System (OS) of a server, and a control unit executes a control program according to data collected by the sensors.
The controller may be an integrated circuit chip having signal processing capabilities. The controller may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor. The controller may also be any conventional processor or the like.
In this embodiment, the controller is configured to execute an executable module stored therein, where the executable module includes a control program for protecting the air conditioner from high temperature, and is capable of implementing the multi-split long-tube connection output adaptive method provided in the foregoing embodiment according to the control program.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A multi-split long connecting pipe output self-adaptive method is characterized by comprising the following steps:
s1: refrigerating operation of the multi-connected machine;
s2: detecting and acquiring the temperature information of the inner machine pipe, and judging whether the actual output effect of the inner machine is poor or not;
s3: if the actual output effect of the operation of the internal machine is poor, judging whether the pressure loss from the internal machine to the external machine is reduced greatly; if yes, go to S4; if not, go to S5;
s4: adjusting the target low-pressure temperature, and reducing the target low-pressure interval for control;
s5: maintaining the current control to continue running;
between step S3 and step S4, step S3A is added: judging whether the current frequency f of the compressor is less than C, if so, entering S4; if not, entering S5, wherein C is a preset experience parameter;
in step S2, it is determined whether or not the internal machine average tube temperature T is in operationAverageIf the average tube temperature T of the inner machine is higher than A, the actual output effect of the inner machine is poor, and the process goes to S3, if the actual output effect of the inner machine is not good, the process goes to S5, wherein the average tube temperature T of the inner machine is operatedAverage outThe average value of the inlet pipe temperature, the middle pipe temperature and the outlet pipe temperature of all running internal machines is referred, and A is a preset empirical parameter;
in step S3, when the average inlet pipe temperature of the internal machine during operation-the average low-pressure temperature of the system > B, the pressure loss from the internal machine to the external machine is decreased greatly, where the average inlet pipe temperature of the internal machine during operation refers to the average value of the inlet pipe temperatures of all the internal machines during operation, and B is a preset empirical parameter;
in step S4, the target low-pressure temperature [ X, Y ] is decreased to [ X- Δ T, Y- Δ T ], where X denotes an upper limit of a temperature interval of the target low pressure, Y denotes a lower limit of the temperature interval of the target low pressure, and Δ T is a preset empirical parameter;
in step S4, after the target low-pressure temperature is adjusted, if the low-pressure temperature is within the current target low-pressure temperature range, the frequency is maintained unchanged, and when the condition for adjusting the target low-pressure temperature is satisfied again, the target low-pressure temperature is adjusted downward again; after the target low-pressure temperature is adjusted, if the low-pressure temperature is not within the current target low-pressure temperature range, increasing the frequency by E% of the current frequency, and if the frequency is the highest, increasing the outer fan to the highest rotating speed, wherein E is a preset empirical parameter.
2. The multi-split long connecting pipe output self-adaption method as claimed in claim 1, wherein the continuous time T is2Detecting average tube temperature T of running inner machineAverageIf the temperature is more than A, the average inlet pipe temperature of the internal machine is operated, the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is less than C, the step S4 is executed, wherein T2The value range of (1) is 1 min-8 min.
3. A multi-split long-connected pipe output self-adaptive device, which is characterized by adopting the multi-split long-connected pipe output self-adaptive method of any one of claims 1-2, and comprises the following steps:
an acquisition unit capable of acquiring the average tube temperature T of the running internal machineAverageAverage inlet pipe temperature of an internal running machine, average low-pressure temperature of a system and current frequency f of a compressor;
a judging unit: judging whether to run the average tube temperature T of the internal machine or not according to the information detected by the acquisition unitAverage outMore than A, the average inlet pipe temperature of the inner machine-the average low-pressure temperature of the system is more than B, and the current frequency f of the compressor is lessC，
And the control unit is used for controlling the multi-split system operation method to operate according to the control condition of the reduced target low-voltage interval or continuously operate according to the maintained current control condition according to the result of the judging unit.
4. A multi-split system comprising a computer readable storage medium storing a computer program and a processor, the computer program being readable and executable by the processor, the processor being capable of performing the steps of the multi-split telematic output adaptation method according to any one of claims 1-2.
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