CN116878114B - Central air conditioning valve control device - Google Patents

Central air conditioning valve control device Download PDF

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Publication number
CN116878114B
CN116878114B CN202310979925.4A CN202310979925A CN116878114B CN 116878114 B CN116878114 B CN 116878114B CN 202310979925 A CN202310979925 A CN 202310979925A CN 116878114 B CN116878114 B CN 116878114B
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Prior art keywords
valve
opening
air conditioner
indoor
temperature
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CN116878114A (en
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校荣保
王青
任保国
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Guangdong Agco Construction Engineering Co ltd
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Guangdong Agco Construction Engineering Co ltd
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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
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a central air-conditioning valve control device, which relates to the technical field of valve control and is used for solving the problems that the existing air-conditioning control device cannot be automatically adjusted according to real-time changes of indoor and external environments and lacks of dynamic monitoring and feedback control of valve opening; the intelligent control system realizes the intellectualization and automation of the central air-conditioning valve control, adopts flexible control logic, can automatically monitor the valve opening and intelligently adjust the valve opening according to parameters such as the temperature, the humidity, the personnel number and the like in a room monitored by the sensor in real time, ensures that the indoor environment is always kept in a comfortable range, reduces the operation burden of a user, reduces the errors and omission of manual setting, and improves the automation degree and the intellectualization level of the device.

Description

Central air conditioning valve control device
Technical Field
The invention relates to the technical field of valve control, in particular to a valve control device of a central air conditioner.
Background
Central air conditioning systems are widely used in large buildings and offices for regulating indoor temperature and humidity, providing a comfortable indoor environment. The traditional central air conditioner valve control device has some defects;
the valve opening of the conventional central air conditioner valve control device is generally set in a preset manner. The user can select a fixed temperature according to own requirements and preferences, so that the valve opening of the air conditioner is kept unchanged.
However, the factors such as the temperature, humidity and personnel density of the indoor environment may have obvious changes in different time and different areas, but the existing air conditioner control device cannot automatically adjust according to the real-time changes of the indoor and external environments, and lacks dynamic monitoring and feedback control of the valve opening. Therefore, the valve opening depending on the fixed mode cannot meet the actual requirement, so that the indoor environment cannot achieve the ideal comfort and energy efficiency effects.
Disclosure of Invention
The invention aims to solve the problems that the existing air conditioner control device cannot automatically adjust according to real-time changes of indoor and external environments and lacks dynamic monitoring and feedback control of valve opening, and provides a central air conditioner valve control device.
The aim of the invention can be achieved by the following technical scheme:
a central air conditioning valve control device, comprising:
the sensing module is used for collecting main control parameters and influence parameters around the air conditioner and uploading the main control parameters and the influence parameters to the cloud computing platform;
the setting module is used for receiving the setting of the air conditioner using parameters by a user and uploading the setting to the cloud computing platform;
the cloud computing platform is used for receiving the data acquired by the sensing module and the setting module and analyzing the data to generate an adjusting and compensating signaling for the air conditioner split valve;
firstly, determining whether an air conditioner is in a refrigeration mode or a heating mode and sending a corresponding control instruction to an execution module;
acquiring the indoor temperature sensed by the sensing module and the temperature set by the setting module for the air conditioner, and subtracting the air conditioner set temperature from the indoor temperature to calculate a difference value to obtain a missing temperature;
when the air conditioner using mode corresponding to the missing temperature being a positive value or a negative value is a refrigerating mode or a heating mode, signaling for connecting a refrigerating pipe or a heating pipe is sent to a main valve controller in an execution module, then the wind speeds set by a user in a setting module are determined, and different wind speeds correspond to different opening sizes of the sub valves through the regulation rules of the wind speeds and the opening sizes of the sub valves;
the absolute value of the obtained missing temperature is calculated and then is compared with a preset temperature difference threshold value; when the absolute value of the missing temperature is lower than a preset temperature difference threshold value, a shrinkage signaling is sent to a valve separating controller in an execution module, and the valve separating is controlled to shrink on the basis of the corresponding opening of the original wind speed;
when the absolute value of the missing temperature is larger than or equal to a preset temperature difference threshold value; acquiring the indoor humidity and the air flow rate acquired in the sensing module, and obtaining an adjustment value through calculation and analysis; comparing the calculated regulating value with a plurality of preset continuous regulating value intervals, wherein the plurality of regulating value intervals respectively correspond to a plurality of matched regulating levels, and each regulating level is correspondingly provided with the degree of increasing the opening of the sub-valve;
after determining an adjusting value interval to which an adjusting value belongs, determining the increasing degree of the opening of the split valve corresponding to the original wind speed, transmitting the increasing degree of the split valve and an adjusting signaling to the split valve controller in the execution module, and carrying out corresponding supplementary adjustment on the opening of the split valve;
the cloud computing platform is also used for compensating and adjusting the split valve through the influence parameters acquired in the sensing module;
the execution module is used for receiving the control signaling of cloud computing and executing adjustment control on the valve in the central air conditioner;
and the flow verification device is also used for verifying the flow of the opening degree of the split valve and judging whether the abnormality exists.
Further, the main control parameters collected by the sensing module comprise indoor temperature, humidity and air flow rate;
the acquisition of the influencing parameters comprises the following steps: the number of indoor heat sources, the number of indoor people and the outdoor temperature;
the setting module receives the setting of a user, wherein the setting module comprises the setting of an air conditioning refrigerating and heating mode, and further comprises the setting of air conditioning temperature and air speed.
Further, the specific operation steps of the cloud computing platform for compensating and adjusting the split valve through the influence parameters collected in the sensing module are as follows:
the sensing module is used for collecting indoor and outdoor temperature differences, the number of indoor opening heat sources and the number of indoor people in the influence parameters;
normalizing the obtained indoor and outdoor temperature difference, the number of indoor opening heat sources and the number of indoor people;
when the use mode of the air conditioner is a refrigeration mode, taking the indoor and outdoor temperature difference as the bottom surface diameter, setting up a cone when the sum of the indoor opening heat source number and the indoor number of people is high, calculating the volume of the whole cone, and taking the volume of the cone as a valve opening compensation value in the refrigeration mode;
when the use mode of the air conditioner is a heating mode, analyzing and calculating the indoor and outdoor temperature difference, the number of indoor opening heat sources and the number of indoor people to obtain a valve opening compensation value in the heating mode;
comparing the valve opening compensation values in the refrigeration mode and the heating mode with two groups of a plurality of compensation value intervals, wherein the two groups of the plurality of compensation value intervals correspond to different valve opening compensation degrees respectively, the valve opening compensation degrees are increased by 0.5% of the valve opening, and the valve opening compensation degrees corresponding to the valve opening compensation values in the refrigeration mode and the heating mode are determined after comparison;
transmitting the compensation degree and the compensation signaling of the opening degree of the split valve to a split valve controller, and carrying out corresponding compensation fine adjustment on the opening degree of the split valve.
Further, the cloud computing platform is further used for carrying out secondary confirmation on a mode selected by a user through the missing temperature, and the specific operation steps are as follows:
when the missing temperature is positive, judging that the air conditioner is in a pre-cooling state, checking the pre-cooling state with an air conditioner use mode, and when the air conditioner mode is a heating mode, controlling the opening of a main valve to be completely closed, generating a determining signaling and sending the determining signaling to a user mobile terminal for secondarily determining the mode selected by the user;
when the missing temperature is negative, judging that the air conditioner is in a prefabricated thermal state, checking the thermal state with an air conditioner using mode, when the air conditioner is in a refrigerating mode, controlling the opening of the main valve to be completely closed, generating a determining signaling and sending the determining signaling to a mobile terminal of a user, and determining the mode selected by the user for the second time.
Further, the specific operation steps of the execution module receiving the cloud computing control signaling and executing control on the valve in the central air conditioner are as follows:
firstly, receiving the wind speed set in a setting module, and correspondingly adjusting the opening of the split valve through a split valve controller according to the regulation rule of the wind speed and the opening of the split valve;
when receiving a signaling sent by the cloud computing platform and communicated with a refrigerating pipe or a heating pipe, controlling one end of a main valve to be communicated with the refrigerating pipe by utilizing a main valve controller, and closing the connection with the heating pipe or connecting one end of the main valve with the refrigerating pipe, and closing the connection with the heating pipe; the whole main valve is a three-way valve, the outlet is communicated with the branch valve through a connecting pipe, and the opening degree of fluid circulation is controlled by the branch valve;
when the contraction degree signaling is received, the indoor temperature and the set temperature are smaller than a preset temperature difference threshold value, and the valve controller is used for controlling the valve to contract on the basis of the opening degree corresponding to the original wind speed;
specifically, according to the difference value between the indoor temperature and the set temperature, comparing the difference value between the indoor temperature and the set temperature with three preset continuous difference value intervals, wherein the three continuous difference value intervals are respectively provided with three shrinkage levels which are respectively 2%, 3% and 4%, and when the difference value between the indoor temperature and the set temperature is smaller, the shrinkage level is higher;
when an adjustment signaling is received, the valve opening increasing degree calculated by the cloud computing platform is obtained, meanwhile, a compensation signaling and a valve opening compensating degree are obtained, the valve opening increasing degree and the valve opening compensating degree are added and summed, and the valve opening of the valve is adjusted and compensated by utilizing a valve opening controller so as to adapt to different main control parameters and influence parameters; wherein the acquisition period setting of the influencing parameters is smaller than the acquisition period of the master control parameters.
Further, the regulation rule of the wind speed and the opening degree of the split valve comprises:
when the wind speed is set as primary wind, the opening degree of the corresponding sub-valve is 10%, when the wind speed is set as secondary wind, the opening degree of the corresponding sub-valve is 20%, when the wind speed is set as tertiary wind, the opening degree of the corresponding sub-valve is 30%, when the wind speed is set as quaternary wind, the opening degree of the corresponding sub-valve is 40%, and when the wind speed is set as five-stage wind, the opening degree of the corresponding sub-valve is 50%; and so on.
Further, the execution module verifies the flow of the opening degree of the split valve, and the specific operation steps for judging whether the abnormality exists are as follows:
detecting airflow flowing out of the split valve by using an air flowmeter arranged on a drainage pipeline communicated with the split valve, and acquiring standard flow data of the split valve when the opening airflows of different degrees circulate;
comparing the data measured by the air flowmeter with standard flow data, controlling the opening degree of the valve to be opened to be in a normal state by the valve controller when the error exceeds a preset value, continuously monitoring the flow data in a certain time period, analyzing and calculating average flow, maximum flow and minimum flow, calculating difference values with the standard average flow, the standard maximum flow and the standard minimum flow to respectively obtain average flow error, maximum flow error and minimum flow error, and analyzing and calculating according to the three errors to obtain abnormal values;
comparing the obtained abnormal value with a preset abnormal value threshold, and shortening the calculation time of the next abnormal value when the calculated abnormal value YCZ exceeds the abnormal threshold;
when the abnormal values calculated for three times exceed the abnormal threshold value, generating an abnormal signaling and sending the abnormal signaling to a mobile terminal of the user, and reminding the user of maintaining and overhauling the abnormality of the air conditioner and the internal valve.
Compared with the prior art, the invention has the beneficial effects that:
(1) The intelligent control system realizes the intellectualization and automation of the control of the central air-conditioning valve, adopts flexible control logic, can automatically monitor the opening of the valve and intelligently adjust the opening of the valve according to parameters such as the temperature, the humidity, the number of people and the like in a room monitored by a sensor in real time, ensures that the indoor environment is always kept in a comfortable range, reduces the operation burden of a user, reduces the errors and omission of manual setting, and improves the automation degree and the intellectualization level of the device;
(2) According to the invention, by utilizing the monitoring of the split valve airflow, different faults of the split valve can be discovered at the first time, and notification reminding is carried out to a user, so that the bad use effect of the air conditioner is avoided, and the damage is timely stopped.
Drawings
For the convenience of those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
fig. 1 is a general block diagram of the system of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present disclosure and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, a central air conditioner valve control device comprises a sensing module, a setting module, a cloud computing platform and an executing module;
the sensing module is used for collecting the main control parameters and the influence parameters and sensing the surrounding environment conditions of the air conditioner;
the specifically collected main control parameters comprise indoor temperature, humidity and air flow rate; the acquisition of the influencing parameters comprises the following steps: the number of indoor heat sources, the number of indoor people and the outdoor temperature; wherein the indoor opening heat source can be a computer, a lamp or household appliance and the like; calculating the indoor and outdoor temperature difference between the obtained outdoor temperature and the indoor temperature;
uploading the acquired main control parameters and the influence parameters to a cloud computing platform;
the setting module is used for receiving the setting of each parameter of the air conditioner by a user;
receiving a mode set by a user on an air conditioner, wherein the mode comprises refrigeration or heating, and simultaneously acquiring the set temperature and the wind speed of the user on the air conditioner;
the cloud computing platform is used for receiving and analyzing the data acquired by the sensing module and the setting module;
firstly, determining a use mode of an air conditioner, switching a main valve correspondingly to a refrigeration mode and a heating mode respectively, and sending a corresponding control instruction to a main valve controller; acquiring the indoor temperature sensed by the sensing module and the temperature set by the setting module for the air conditioner, and subtracting the air conditioner set temperature from the indoor temperature to calculate a difference value to obtain a missing temperature;
when the missing temperature is positive, judging that the air conditioner is in a pre-cooling state, checking the pre-cooling state with an air conditioner use mode, and when the air conditioner mode is a heating mode, controlling the opening of a main valve to be completely closed, generating a determining signaling and sending the determining signaling to a user mobile terminal for secondarily determining the mode selected by the user;
when the missing temperature is negative, judging that the air conditioner is in a prefabricated thermal state, checking the thermal state with an air conditioner using mode, and when the air conditioner is in a refrigerating mode, controlling the opening of the main valve to be completely closed, generating a determining signaling and sending the determining signaling to a mobile terminal of a user, wherein the determining signaling is used for secondarily determining the mode selected by the user;
when the air conditioner using mode corresponding to the missing temperature with the positive value or the negative value is a refrigerating mode or a heating mode, signaling for connecting a refrigerating pipe or a heating pipe is sent to a main valve controller in an execution module, and then the wind speed set by a user in a setting module is determined, wherein the wind speed is divided into a plurality of grades, and the grades correspond to different opening sizes of the sub valves respectively;
specific regulation rules of wind speed and valve opening degree: when the wind speed is set as primary wind, the opening of the corresponding sub-valve is 10%, when the wind speed is set as secondary wind, the opening of the corresponding sub-valve is 20%, and so on;
the absolute value of the obtained missing temperature is calculated and then is compared with a preset temperature difference threshold value; when the absolute value of the missing temperature is lower than a preset temperature difference threshold value, a shrinkage signaling is sent to the valve dividing controller, and the valve dividing is controlled to narrow in a small range on the basis of the corresponding opening degree of the original wind speed;
when the absolute value of the missing temperature is larger than or equal to a preset temperature difference threshold value;
acquiring the indoor humidity and the air flow rate acquired in the sensing module, respectively calibrating the acquired missing temperature and the acquired indoor humidity and air flow rate as QS, SD and KS, and substituting the normalized missing temperature, the normalized indoor humidity and the normalized air flow rate into a formula:to obtain a regulating value TJ, where +.>The absolute value of the missing temperature is preset with a weight coefficient and the value is 2.336; comparing the calculated regulating value TJ with a plurality of preset continuous regulating value intervals, wherein the plurality of regulating value intervals respectively correspond to a plurality of matched regulating levels, each regulating level is correspondingly provided with the degree of increasing the opening of the sub valve, for example, the first-level regulating level is increased by 1% corresponding to the opening of the sub valve at the original wind speed, the second-level regulating level is increased by 2% corresponding to the opening of the sub valve at the original wind speed, and the like, when the calculated regulating value TJ is larger, the regulating value interval is higher, the corresponding regulating level is higher, and the corresponding opening of the sub valve is increased by the degree of increasing the corresponding opening of the sub valve at the original wind speed;
after determining an adjusting value interval to which the adjusting value TJ belongs, determining the increasing degree of the opening of the split valve corresponding to the original wind speed, transmitting the increasing degree of the split valve and an adjusting signaling to a split valve controller in an executing module, and carrying out corresponding supplementary adjustment on the opening of the split valve;
the air conditioner valve compensation adjusting device is also used for compensating and adjusting the air conditioner valve through the influence parameters collected in the sensing module;
specifically: acquiring indoor and outdoor temperature differences, indoor opening heat source quantity and indoor people number in the influence parameters by the sensing module; calibrating the obtained indoor and outdoor temperature difference, the indoor opening heat source quantity and the indoor number of people as SY, RY and RT respectively, and carrying out normalization treatment;
when the use mode of the air conditioner is a refrigeration mode, taking the indoor and outdoor temperature difference SY as the bottom diameter, setting up a cone when the sum of the indoor opening heat source quantity RY and the indoor number RT is high, calculating the volume of the whole cone, and taking the volume of the cone as a valve opening compensation value in the refrigeration mode;
when the use mode of the air conditioner is a heating mode, substituting the indoor and outdoor temperature difference SY, the indoor opening heat source quantity RY and the indoor number RT into a formula:so as to obtain a valve opening compensation value in a heating mode;
comparing the valve opening compensation values in the refrigeration mode and the heating mode with two groups of a plurality of compensation value intervals, wherein the two groups of the plurality of compensation value intervals correspond to different valve opening compensation degrees respectively, the valve opening compensation degrees are increased by 0.5% of the valve opening, and the valve opening compensation degrees corresponding to the valve opening compensation values in the refrigeration mode and the heating mode are determined after comparison; transmitting the compensation degree and the compensation signaling of the opening degree of the split valve to a split valve controller, and carrying out corresponding compensation fine adjustment on the opening degree of the split valve;
the execution module is used for receiving the control signaling of cloud computing and executing control on the valve in the central air conditioner;
firstly, receiving the wind speed set in a setting module, and correspondingly adjusting the opening of the split valve through a split valve controller according to the regulation rule of the wind speed and the opening of the split valve; when receiving a signaling sent by the cloud computing platform and communicated with a refrigerating pipe or a heating pipe, controlling one end of a main valve to be communicated with the refrigerating pipe by utilizing a main valve controller, closing the connection with the heating pipe or connecting one end of the main valve with the refrigerating pipe, closing the connection with the heating pipe, and controlling the opening of fluid circulation by utilizing a branch valve, wherein the whole main valve is a three-way valve, and an outlet is communicated with the branch valve through a connecting pipe; when the shrinkage signaling is received, the indoor temperature and the set temperature are smaller than a preset temperature difference threshold value, and the valve controller is used for controlling the valve to narrow the small range on the basis of the opening corresponding to the original wind speed;
specifically, according to the difference value between the indoor temperature and the set temperature, comparing the difference value between the indoor temperature and the set temperature with three preset continuous difference value intervals, wherein the three continuous difference value intervals are respectively provided with three shrinkage levels which are respectively 2%, 3% and 4%, and when the difference value between the indoor temperature and the set temperature is smaller, the shrinkage level is higher, so that the energy-saving and comfortable effects are achieved;
when an adjustment signaling is received, the valve dividing increasing degree calculated by the cloud computing platform is obtained, meanwhile, a compensation signaling and a valve dividing opening compensating degree are obtained, the valve dividing increasing degree and the valve dividing opening compensating degree are added and summed, and the valve dividing controller is utilized to adjust and compensate the opening of the valve dividing, so that different main control parameters and influence parameters are adapted, and the indoor more proper temperature is achieved;
the acquisition period of the influence parameters is set smaller than that of the main control parameters, and is usually set to be 2min, 5min or 10min, and the acquisition period of the main control parameters is usually set to be 3min, 6min or 11min because the number of indoor heat sources, the number of indoor people and the outdoor temperature change speed are relatively high in the influence parameters;
the flow verification device is also used for verifying the flow of the opening of the split valve and judging whether the abnormality exists;
detecting airflow flowing out of the split valve by using an air flowmeter arranged on a drainage pipeline communicated with the split valve, and acquiring standard flow data of the split valve when the opening airflows of different degrees circulate; comparing the data measured by the air flowmeter with the standard flow dataWhen the error exceeds a preset value, controlling the opening degree of the split valve to be opened in a normal state, such as 20%, 30% or 50%, continuously monitoring flow data in a certain time period, analyzing and calculating average flow, maximum and minimum flow, calculating difference values with standard average flow, standard maximum flow and standard minimum flow to respectively obtain average flow error, maximum flow error and minimum flow error, calibrating the average flow error, the maximum flow error and the minimum flow error as PJ, ZD and ZX, and substituting the average flow, the maximum flow and the minimum flow into a formula:to obtain an outlier YCZ; wherein alpha, beta and χ are respectively an average flow error preset weight coefficient, a maximum flow error preset weight coefficient and a minimum flow error preset weight coefficient, and respectively take values of 1.036, 0.963 and 1.002;
comparing the obtained abnormal value YCZ with a preset abnormal value threshold, and shortening the calculation time of the next abnormal value when the calculated abnormal value YCZ exceeds the abnormal threshold; when the abnormal values calculated for three times exceed the abnormal threshold value, generating an abnormal signaling and sending the abnormal signaling to a mobile terminal of the user, and reminding the user of maintaining and overhauling the abnormality of the air conditioner and the internal valve.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. A central air conditioning valve control device, characterized by comprising:
the sensing module is used for collecting main control parameters and influence parameters around the air conditioner and uploading the main control parameters and the influence parameters to the cloud computing platform;
the setting module is used for receiving the setting of the air conditioner using parameters by a user and uploading the setting to the cloud computing platform;
the cloud computing platform is used for receiving the data acquired by the sensing module and the setting module and analyzing the data to generate an adjusting signaling for the air conditioner split valve;
the specific steps for generating the adjustment signaling include:
firstly, determining whether an air conditioner is in a refrigeration mode or a heating mode and sending a corresponding control instruction to an execution module;
acquiring the indoor temperature sensed by the sensing module and the temperature set by the setting module for the air conditioner, and subtracting the air conditioner set temperature from the indoor temperature to calculate a difference value to obtain a missing temperature;
when the missing temperature is a positive value or a negative value and the corresponding air conditioner using mode is a refrigerating mode or a heating mode, signaling for connecting a refrigerating pipe or a heating pipe is sent to a main valve controller in an execution module, then the wind speeds set by a user in a setting module are determined, and different wind speeds correspond to different opening sizes of the sub valves through the wind speeds and the sub valve opening adjustment rules;
the absolute value of the obtained missing temperature is calculated and then is compared with a preset temperature difference threshold value; when the absolute value of the missing temperature is lower than a preset temperature difference threshold value, a shrinkage signaling is sent to a valve separating controller in an execution module, and the valve separating is controlled to shrink on the basis of the corresponding opening of the original wind speed;
when the absolute value of the missing temperature is larger than or equal to a preset temperature difference threshold value; acquiring the indoor humidity and the air flow rate acquired in the sensing module, and obtaining an adjustment value through calculation and analysis; comparing the calculated regulating value with a plurality of preset continuous regulating value intervals, wherein the plurality of regulating value intervals respectively correspond to a plurality of matched regulating levels, and each regulating level is correspondingly provided with the degree of increasing the opening of the sub-valve;
after determining an adjusting value interval to which an adjusting value belongs, determining the increasing degree of the opening of the split valve corresponding to the original wind speed, transmitting the increasing degree of the split valve and an adjusting signaling to the split valve controller in the execution module, and carrying out corresponding supplementary adjustment on the opening of the split valve;
the cloud computing platform is also used for compensating and adjusting the split valve through the influence parameters acquired in the sensing module;
the execution module is used for receiving the control signaling of cloud computing and executing adjustment control on the valve in the central air conditioner;
and the flow verification device is also used for verifying the flow of the opening degree of the split valve and judging whether the abnormality exists.
2. The valve control device of a central air conditioner according to claim 1, wherein the main control parameters collected by the sensing module include indoor temperature, humidity and air flow rate;
the acquisition of the influencing parameters comprises the following steps: the number of indoor heat sources, the number of indoor people and the outdoor temperature;
the setting module receives the setting of a user, wherein the setting module comprises the setting of an air conditioning refrigerating and heating mode, and further comprises the setting of air conditioning temperature and air speed.
3. The central air conditioner valve control device according to claim 1, wherein the cloud computing platform performs compensation adjustment on the split valve through the influence parameters collected in the sensing module, and the specific operation steps are as follows:
acquiring indoor and outdoor temperature differences, indoor opening heat source quantity and indoor people number in the influence parameters by the sensing module;
normalizing the obtained indoor and outdoor temperature difference, the number of indoor opening heat sources and the number of indoor people;
when the use mode of the air conditioner is a refrigeration mode, taking the indoor and outdoor temperature difference as the bottom surface diameter, setting up a cone when the sum of the indoor opening heat source number and the indoor number of people is high, calculating the volume of the whole cone, and taking the volume of the cone as a valve opening compensation value in the refrigeration mode;
when the use mode of the air conditioner is a heating mode, analyzing and calculating the indoor and outdoor temperature difference, the number of indoor opening heat sources and the number of indoor people to obtain a valve opening compensation value in the heating mode;
comparing the valve opening compensation values in the refrigeration mode and the heating mode with two groups of a plurality of compensation value intervals, wherein the two groups of the plurality of compensation value intervals correspond to different valve opening compensation degrees respectively, the valve opening compensation degrees are increased by 0.5% of the valve opening, and the valve opening compensation degrees corresponding to the valve opening compensation values in the refrigeration mode and the heating mode are determined after comparison;
transmitting the compensation degree and the compensation signaling of the opening degree of the split valve to a split valve controller, and carrying out corresponding compensation fine adjustment on the opening degree of the split valve.
4. The central air conditioner valve control device according to claim 1, wherein the cloud computing platform is further configured to perform secondary confirmation to a mode selected by a user through a missing temperature, and the specific operation steps are as follows:
when the missing temperature is positive, judging that the air conditioner is in a pre-cooling state, checking the pre-cooling state with an air conditioner use mode, and when the air conditioner mode is a heating mode, controlling the opening of a main valve to be completely closed, generating a determining signaling and sending the determining signaling to a user mobile terminal for secondarily determining the mode selected by the user;
when the missing temperature is negative, judging that the air conditioner is in a prefabricated thermal state, checking the thermal state with an air conditioner using mode, when the air conditioner is in a refrigerating mode, controlling the opening of the main valve to be completely closed, generating a determining signaling and sending the determining signaling to a mobile terminal of a user, and determining the mode selected by the user for the second time.
5. The valve control device of a central air conditioner according to claim 1, wherein the specific operation steps of the execution module receiving the control signaling of cloud computing and executing control of the valves in the central air conditioner are as follows:
firstly, receiving the wind speed set in a setting module, and correspondingly adjusting the opening of the split valve through a split valve controller according to the regulation rule of the wind speed and the opening of the split valve;
when receiving a signaling sent by the cloud computing platform and communicated with a refrigerating pipe or a heating pipe, controlling one end of a main valve to be communicated with the refrigerating pipe by utilizing a main valve controller, and closing the connection with the heating pipe or connecting one end of the main valve with the refrigerating pipe, and closing the connection with the heating pipe; the whole main valve is a three-way valve, the outlet is communicated with the branch valve through a connecting pipe, and the opening degree of fluid circulation is controlled by the branch valve;
when the contraction degree signaling is received, the indoor temperature and the set temperature are smaller than a preset temperature difference threshold value, and the valve controller is used for controlling the valve to contract on the basis of the opening degree corresponding to the original wind speed;
specifically, according to the difference value between the indoor temperature and the set temperature, comparing the difference value between the indoor temperature and the set temperature with three preset continuous difference value intervals, wherein the three continuous difference value intervals are respectively provided with three shrinkage levels which are respectively 2%, 3% and 4%, and when the difference value between the indoor temperature and the set temperature is smaller, the shrinkage level is higher;
when an adjustment signaling is received, the valve opening increasing degree calculated by the cloud computing platform is obtained, meanwhile, a compensation signaling and a valve opening compensating degree are obtained, the valve opening increasing degree and the valve opening compensating degree are added and summed, and the valve opening of the valve is adjusted and compensated by utilizing a valve opening controller so as to adapt to different main control parameters and influence parameters; wherein the acquisition period setting of the influencing parameters is smaller than the acquisition period of the master control parameters.
6. The valve control device of a central air conditioner according to claim 5, wherein the regulation rule of the wind speed and the split valve opening degree comprises:
when the wind speed is set as primary wind, the opening degree of the corresponding sub-valve is 10%, when the wind speed is set as secondary wind, the opening degree of the corresponding sub-valve is 20%, when the wind speed is set as tertiary wind, the opening degree of the corresponding sub-valve is 30%, when the wind speed is set as quaternary wind, the opening degree of the corresponding sub-valve is 40%, and when the wind speed is set as five-stage wind, the opening degree of the corresponding sub-valve is 50%; and so on.
7. The valve control device of a central air conditioner according to claim 1, wherein the execution module verifies the flow rate of the opening degree of the split valve, and the specific operation steps for judging whether the abnormality exists are as follows:
detecting airflow flowing out of the split valve by using an air flowmeter arranged on a drainage pipeline communicated with the split valve, and acquiring standard flow data of the split valve when the opening airflows of different degrees circulate;
comparing the data measured by the air flowmeter with standard flow data, controlling the opening degree of the valve to be opened to be in a normal state by the valve controller when the error exceeds a preset value, continuously monitoring the flow data in a certain time period, analyzing and calculating average flow, maximum flow and minimum flow, calculating difference values with the standard average flow, the standard maximum flow and the standard minimum flow to respectively obtain average flow error, maximum flow error and minimum flow error, and analyzing and calculating according to the three errors to obtain abnormal values;
comparing the obtained abnormal value with a preset abnormal value threshold, and shortening the calculation time of the next abnormal value when the calculated abnormal value YCZ exceeds the abnormal threshold;
when the abnormal values calculated for three times exceed the abnormal threshold value, generating an abnormal signaling and sending the abnormal signaling to a mobile terminal of the user, and reminding the user of maintaining and overhauling the abnormality of the air conditioner and the internal valve.
CN202310979925.4A 2023-08-07 2023-08-07 Central air conditioning valve control device Active CN116878114B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157934A (en) * 1990-06-29 1992-10-27 Kabushiki Kaisha Toshiba Controller for electrically driven expansion valve of refrigerating cycle
CN104776558A (en) * 2015-03-25 2015-07-15 珠海格力电器股份有限公司 Fresh air system and air valve opening control method thereof
CN113847644A (en) * 2021-10-19 2021-12-28 沈阳泰科流体控制有限公司 Secondary net valve opening control method and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157934A (en) * 1990-06-29 1992-10-27 Kabushiki Kaisha Toshiba Controller for electrically driven expansion valve of refrigerating cycle
CN104776558A (en) * 2015-03-25 2015-07-15 珠海格力电器股份有限公司 Fresh air system and air valve opening control method thereof
CN113847644A (en) * 2021-10-19 2021-12-28 沈阳泰科流体控制有限公司 Secondary net valve opening control method and system

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