CN110107995A - Control method, device and system for auxiliary heating of variable air volume tail end - Google Patents

Control method, device and system for auxiliary heating of variable air volume tail end Download PDF

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Publication number
CN110107995A
CN110107995A CN201910396529.2A CN201910396529A CN110107995A CN 110107995 A CN110107995 A CN 110107995A CN 201910396529 A CN201910396529 A CN 201910396529A CN 110107995 A CN110107995 A CN 110107995A
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China
Prior art keywords
temperature
heating power
air
heater
heating
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CN201910396529.2A
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Chinese (zh)
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CN110107995B (en
Inventor
李志海
王严杰
周江峰
陈启凡
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201910396529.2A priority Critical patent/CN110107995B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The disclosure provides a control method, a device and a system for auxiliary heating of a variable air volume tail end, and relates to the field of air conditioners. The method comprises the following steps: after the air supply temperature is adjusted by an air supply system, delaying the first threshold time to detect whether the ambient temperature at the tail end of the variable air volume and the actual air supply volume meet the supercooling protection condition, wherein the supercooling protection condition comprises that the difference between the ambient temperature and the set temperature is less than or equal to the first temperature threshold, and the actual air supply volume is within a preset range; and starting the heater for auxiliary heating under the condition that the duration time of meeting the supercooling protection condition exceeds a second threshold time. The variable air supply temperature is preferentially adjusted and controlled, and then auxiliary control of terminal electric heating is carried out as required, so that the system can run more energy-saving while the indoor temperature is improved.

Description

Control method, the device and system of vav terminal auxiliary heating
Technical field
This disclosure relates to air-conditioner field more particularly to a kind of vav terminal auxiliary heating control method, device and System.
Background technique
Air conditioning system with variable is a kind of mode of all-air air conditioning system, it is the comfortable and power conservation requirement with air-conditioning And the air-conditioning system that developed.
In air quantity variable air conditioner engineering design and application, although the air conditioning terminal in each cabin is each configured to automatic temperature-adjusting control Air quantity variable end device, but since air-conditioning system is huge, each cabin load differs greatly and changes with ship's navigation is mobile, depends merely on Centralized air-conditioning device gives each cabin consentrated air supply or pick-up air temperature, tends to that individual cabin temperatures is caused to be subcooled, or Person occurs first being subcooled to go up again the discomfort problem of temperature.
Summary of the invention
It is existing solve the problems, such as cabin temperature supercooling when, system power dissipation is excessively high, and energy-saving effect is poor.
The disclosure technical problem to be solved is to provide a kind of control method of vav terminal auxiliary heating, device And system, while solving the problems, such as cabin temperature supercooling, so that energy saving of system is run.
On the one hand according to the disclosure, a kind of control method of vav terminal auxiliary heating is proposed, comprising: in supply air system After adjusting supply air temperature, whether delay first threshold time detection vav terminal environment temperature and practical air output meet supercooling Protective condition, wherein supercooling protective condition includes that the difference of environment temperature and set temperature is less than or equal to the first temperature threshold, and reality Border air output is within a preset range;In the case where the duration for meeting supercooling protective condition being more than the second threshold time, open Dynamic heater carries out auxiliary heating.
In one embodiment, it includes: the difference according to environment temperature and set temperature that starting heater, which carries out auxiliary heating, Value, initializes the heating power of heater;According to environment temperature, set temperature and the period for acquiring environment temperature, proportion of utilization The heating power of integral differential pid control mode adjusting heater.
In one embodiment, initialize heater heating power include: environment temperature and set temperature difference it is small In the case where second temperature threshold value, the heating power for initializing heater is the first heating power;In environment temperature and setting Temperature difference is more than or equal to second temperature threshold value, and less than in the case where third temperature threshold, initializes the fever function of heater Rate is the second heating power;In the case where the difference of environment temperature and set temperature is greater than third temperature threshold, initialization heating The heating power of device is third heating power, wherein third temperature threshold is less than or equal to the first temperature threshold;Wherein, the first hair Thermal power is greater than the second heating power, and the second heating power is greater than third heating power.
In one embodiment, the value of the first heating power is 100%;The value of second heating power be environment temperature with set Determine the absolute value of temperature difference and the ratio between the absolute value of the 4th temperature threshold;Wherein, the absolute value of the 4th temperature threshold be greater than etc. In the absolute value of the difference of second temperature threshold value and third temperature threshold;The value of third heating power is 0%.
In one embodiment, it is more than or equal to the 5th temperature threshold, and heater in the difference of environment temperature and set temperature Heating power be less than heating power threshold value in the case where, stop heater carrying out auxiliary heating.
In one embodiment, in cooling mode, preset range is determined according to minimum supply air rate;In a heating mode, Preset range is determined according to maximum air supply rate.
According to another aspect of the present disclosure, it is also proposed that a kind of controller of vav terminal auxiliary heating, comprising: supercooling item Part detection unit is configured as after supply air system adjusts supply air temperature, and the delay first threshold time detects vav terminal ring Whether border temperature and practical air output meet supercooling protective condition, wherein supercooling protective condition includes environment temperature and setting temperature The difference of degree is less than or equal to the first temperature threshold, and practical air output is within a preset range;Heating starting unit is assisted, is configured as In the case where the duration for meeting supercooling protective condition being more than the second threshold time, starting heater carries out auxiliary heating.
In one embodiment, auxiliary heating starting unit is configured as the difference according to environment temperature and set temperature, Initialize the heating power of heater;According to environment temperature, set temperature and the period for acquiring environment temperature, proportion of utilization integral The heating power of differential pid control mode adjusting heater.
In one embodiment, auxiliary heating starting unit is configured as in the difference of environment temperature and set temperature less than the In the case where two temperature thresholds, the heating power for initializing heater is the first heating power;In environment temperature and set temperature Difference be more than or equal to second temperature threshold value, and be less than third temperature threshold in the case where, the heating power for initializing heater is Second heating power;In the case where the difference of environment temperature and set temperature is greater than third temperature threshold, heater is initialized Heating power is third heating power, wherein third temperature threshold is less than or equal to the first temperature threshold;Wherein, the first fever function Rate is greater than the second heating power, and the second heating power is greater than third heating power.
In one embodiment, the value of the first heating power is 100%;The value of second heating power be environment temperature with set Determine the absolute value of temperature difference and the ratio between the absolute value of the 4th temperature threshold;Wherein, the absolute value of the 4th temperature threshold be greater than etc. In the absolute value of the difference of second temperature threshold value and third temperature threshold;The value of third heating power is 0%.
In one embodiment, auxiliary heating stop unit, is configured as being greater than in the difference of environment temperature and set temperature Equal to the 5th temperature threshold, and the heating power of heater is auxiliary less than heater progress in the case where heating power threshold value, is stopped Help heating.
In one embodiment, in cooling mode, preset range is determined according to minimum supply air rate;In a heating mode, Preset range is determined according to maximum air supply rate.
According to another aspect of the present disclosure, it is also proposed that a kind of controller of vav terminal auxiliary heating, comprising: storage Device;And it is coupled to the processor of memory, processor is configured as example above-mentioned based on the instruction execution for being stored in memory Method.
According to another aspect of the present disclosure, it is also proposed that a kind of vav terminal adds including above-mentioned vav terminal auxiliary The controller of heat.
In one embodiment, vav terminal, further include in temperature sensor, air flow sensor and heater at least One;Temperature sensor is configured as detection environment temperature;Air flow sensor is configured as actually sending for detection vav terminal Air quantity;Heater is configured as the air that vav terminal is sent into auxiliary heating.
According to another aspect of the present disclosure, it is also proposed that a kind of air conditioning system with variable, comprising: vav terminal;And collection Middle variable air volume air conditioner is configured as control supply air system and adjusts supply air temperature.
In one embodiment, variable air volume air conditioner is concentrated to be configured as after adjusting air output, in vav terminal The quantity of vav terminal in supercooling protective condition is greater than the quantity of the vav terminal in non-supercooling protective condition In the case of, improve supply air temperature;The quantity of vav terminal in vav terminal in overheating protection condition, which is greater than, to be in In the case where the quantity of the vav terminal of non-overheat protective condition, supply air temperature is reduced;In supercooling in vav terminal Or the quantity of the vav terminal of overheating protection condition is equal to the vav terminal in non-supercooling or non-overheat protective condition In the case where quantity, supply air temperature is kept.
According to another aspect of the present disclosure, it is also proposed that a kind of computer readable storage medium is stored thereon with computer journey The step of sequence instruction, which realizes above-mentioned method when being executed by processor.
Compared with the relevant technologies, the embodiment of the present disclosure utmostly relies on pick-up air temperature and variable air rate to adjust environment temperature Degree, then postpones first threshold time detection vav terminal environment temperature and whether practical air output meets supercooling ceiling Part, in the case where the duration of satisfaction supercooling protective condition being more than the second threshold time, starting heater carries out auxiliary and adds Heat, i.e., reduce to greatest extent it is auxiliary heat operation the opening time therefore while improving room temperature, enable to system more Energy-efficient operation.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and its Advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes embodiment of the disclosure, and together with the description for solving Release the principle of the disclosure.
The disclosure can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1 is the flow diagram of one embodiment of the control method of disclosure vav terminal auxiliary heating.
Fig. 2 is the flow diagram of another embodiment of the control method of disclosure vav terminal auxiliary heating.
Fig. 3 is the structural schematic diagram of one embodiment of the controller of disclosure vav terminal auxiliary heating.
Fig. 4 is the structural schematic diagram of another embodiment of the controller of disclosure vav terminal auxiliary heating.
Fig. 5 is the structural schematic diagram of another embodiment of the controller of disclosure vav terminal auxiliary heating.
Fig. 6 is the structural schematic diagram of another embodiment of the controller of disclosure vav terminal auxiliary heating.
Fig. 7 is the structural schematic diagram of one embodiment of disclosure air conditioning system with variable.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.It should also be noted that unless in addition having Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally Scope of disclosure.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality Proportionate relationship draw.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the disclosure And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference The disclosure is further described in attached drawing.
Fig. 1 is the flow diagram of one embodiment of the control method of disclosure vav terminal auxiliary heating.
In step 110, after supply air system adjusts supply air temperature, the delay first threshold time detects vav terminal environment Whether temperature and practical air output meet supercooling protective condition.Wherein, supercooling protective condition includes environment temperature and set temperature Difference be less than or equal to the first temperature threshold, and practical air output is within a preset range.
For example, first by concentration variable air volume air conditioner control supply air system periodic adjustment system entirety air output and air-supply temperature Degree, after adjusting supply air temperature, the controller delay T1 time of each vav terminal detects the difference of environment temperature and set temperature Whether the first temperature threshold is less than or equal to, and whether within a preset range the practical air output of vav terminal.First threshold Time T1 is, for example, 5min to 120min, and the first temperature threshold △ T1 is, for example, -3 DEG C to -0.5 DEG C.Those skilled in the art It should be appreciated that the value of first threshold time T1 and the first temperature threshold △ T1 are only used for illustrating in the embodiment.
In cooling mode, preset range is determined according to minimum supply air rate.For example, preset range is the first air output threshold value To the second air output threshold value, wherein the first air output threshold value is the product of minimum supply air rate and the first coefficient, the second air output threshold Value is the product of minimum supply air rate and the second coefficient, and the first coefficient is less than the second coefficient.For example, preset range is 0.95*QminIt arrives 1.05*Qmin, QminFor minimum supply air rate.
In a heating mode, preset range is determined according to maximum air supply rate.For example, preset range is third air output threshold value To the 4th air output threshold value, wherein third air output threshold value is the product of maximum air supply rate and third coefficient, the 4th air output threshold Value is the product of maximum air supply rate and the 4th coefficient, and third coefficient is less than the 4th coefficient.Third coefficient can be with the first coefficient phase Deng the 4th coefficient can be equal with the second coefficient.For example, preset range is 0.95*QmaxTo 1.05*Qmax, QmaxFor maximum air-supply Amount.
In step 120, in the case where the duration for meeting supercooling protective condition being more than the second threshold time, starting adds Hot device carries out auxiliary heating.
The second threshold time, T2 was, for example, 5min-10min, it will be understood by those of skill in the art that in the embodiment The value of second threshold time T2 is only used for illustrating.
For example, vav terminal is actually sent if the difference of environment temperature and set temperature is less than or equal to the first temperature threshold Within a preset range, and the state continue for the T2 time to air quantity, then starts heater and carry out auxiliary heating.
In this embodiment, environment temperature utmostly is adjusted by pick-up air temperature and variable air rate, then postpones first Whether threshold time detection vav terminal environment temperature and practical air output meet supercooling protective condition, are meeting supercooling protection In the case that the duration of condition is more than the second threshold time, starting heater carries out auxiliary heating, i.e., reduces to greatest extent Therefore the auxiliary heat operation opening time while improving room temperature, enables to the more energy-efficient operation of system.
In another embodiment of the disclosure, according to the difference of environment temperature and set temperature, heater is initialized Heating power;Then it according to environment temperature, set temperature and the period for acquiring environment temperature, utilizes PID (proportional integral differential) The heating power of control mode adjusting heater.
For example, initializing heater in the case where the difference of environment temperature and set temperature is less than second temperature threshold value Heating power is the first heating power.It is more than or equal to second temperature threshold value in the difference of environment temperature and set temperature, and less than the In the case where three temperature thresholds, the heating power for initializing heater is the second heating power.In environment temperature and set temperature Difference be greater than third temperature threshold in the case where, initialize heater heating power be third heating power, wherein third temperature It spends threshold value and is less than or equal to the first temperature threshold;First heating power is greater than the second heating power, and the second heating power is greater than third Heating power.
In one embodiment, the first heating power is, for example, the 100% of rated thermal power or maximum heating power.The The value of two heating powers is, for example, the absolute value of the difference of environment temperature and set temperature and the ratio between the absolute value of the 4th temperature threshold; Wherein, the absolute value of the 4th temperature threshold is more than or equal to the absolute value of the difference of second temperature threshold value and third temperature threshold.Third Heating power is, for example, the 0% of rated thermal power or maximum heating power.
For example, the first temperature threshold be -0.5 DEG C, second temperature threshold value be -3 DEG C, third temperature threshold be -1 DEG C, the 4th The absolute value of temperature threshold is, for example, 3 DEG C.After starting heater, if environment temperature TRingWith set temperature TIfDifference be less than -3 DEG C, then the heating power for initializing heater is 100%;If environment temperature TRingWith set temperature TIfDifference be more than or equal to -3 DEG C, And be less than -1 DEG C, then the heating power for initializing heater is 100%* | TRing-TIf|/3, if environment temperature TRingWith set temperature TIf Difference be more than or equal to -1 DEG C, then initialize heater heating power be 0%.
In this embodiment, according to the difference of environment temperature and set temperature, the heating power of heater is initialized, then PID adjusting is carried out in the heating power to heater, interior can be prevented by heater operation promotion room temperature meeting On the basis of supercooling, it is precisely controlled the initial heating power of heater, and the heating power of step-less adjustment heater, improves system Energy-saving efficiency.
In another embodiment of the disclosure, it is more than or equal to the 5th temperature threshold in the difference of environment temperature and set temperature Value, and the heating power of heater, less than in the case where heating power threshold value, stopping heater carrying out auxiliary heating.Wherein, Five temperature thresholds are greater than the first temperature threshold.
For example, being more than or equal to 0 DEG C in the difference of environment temperature and set temperature, and the heating power of heater is less than 5% When, stop heater and carries out auxiliary heating.
Fig. 2 is the flow diagram of another embodiment of the control method of disclosure vav terminal auxiliary heating.It should Embodiment in a chiller mode for be introduced.
In step 210, variable air volume air conditioner is concentrated to control to adjust air output.Auxiliary heat is closed at this time, and supply air temperature can be Certain definite value.
In step 220, judge whether vav terminal needs to adjust supply air temperature, if so, 230 are thened follow the steps, otherwise, Execute step 210.
It is protected for example, the quantity of the vav terminal in supercooling protective condition in vav terminal is greater than in non-supercooling In the case where the quantity of the vav terminal of guard strip part, supply air temperature is improved;Overheating protection condition is in vav terminal Vav terminal quantity be greater than in non-overheat protective condition vav terminal quantity in the case where, reduce air-supply temperature Degree;The quantity of vav terminal in supercooling or overheating protection condition in vav terminal is equal in non-supercooling or non-mistake In the case where the quantity of the vav terminal of Thermal protection condition, supply air temperature is kept.
In step 230, supply air temperature is adjusted.
In step 240, postpone the T1 time, each vav terminal controller detects environment temperature TRingWith practical air output Q.Most Big air output Qmax, minimum supply air rate Qmin, set temperature TIfIt can be known quantity.
In step 250, environment temperature T is judgedRingWith set temperature TIfDifference whether be less than or equal to the first temperature threshold △ T1, Whether practical air output Q is more than or equal to 0.95*QminAnd it is less than or equal to 1.05*Qmin, when duration T is more than or equal to second threshold Between T2 otherwise, execute step 210 if so, then follow the steps 260.
In step 260, heater, and initialize the heating power of heater.Protective condition is subcooled until meeting Just open auxiliary heat function.
For example, if TRing-TIf< second temperature threshold value △ T2, then initialize the heating power Z=100% of heater;△T2≤ TRing-TIf< third temperature threshold △ T3, then initialize the heating power Z=100%* of heater | TRing-TIf| the/the four temperature threshold △T4;If TRing-TIf>=△ T3 then initializes the heating power Z=0% of heater.
In step 270, PID adjusting is carried out to the heating power of heater.After completing auxiliary heat initialization, routine is utilized The calorific value of PID control heater.
In step 280, T is judgedRing-TIfWhether the 5th temperature threshold △ T5 is more than or equal to, and the heating power Z of heater is small In heating power threshold value ZIf, if so, thening follow the steps 290, otherwise, execute step 270.
In the heating power step-less adjustment process to heater, real-time detection heating power Z and environment temperature T are neededRing, The excessive auxiliary heat of investment is avoided, so that system cost resource, energy-saving effect is poor, and the item of heating is exited therefore, it is necessary to design heater Part.For example, in heating power Z < 5% of heater, and TRing-TIfAt >=0 DEG C, stop heater operation, otherwise, keeps to heating The Traditional PID of device is adjusted.
In step 290, stops heater and carry out auxiliary heating.
In this embodiment, environment temperature is adjusted using pick-up air temperature to greatest extent, reached in the adjusting of pick-up air temperature Starting auxiliary heat function after the limit, is reducing the starting time of heater to greatest extent, can be improved energy saving of system effect, this Outside, fast stepless control strategy is pasted using auxiliary hot-die, auxiliary hot heating amount is determined according to initial temperature differences boundary fast accurate, is being heated The device operation phase relies on the calorific value of step-less adjustment heater, runs compared to traditional multiple-rank control heater, so that heater Control it is more accurate;In addition, passing through the heating power and environment temperature of real-time detection heater, make when meeting exit criteria Heater quickly exits heating mode, avoids the auxiliary excessive investment of heat, further improves energy saving of system benefit.
Fig. 3 is the structural schematic diagram of one embodiment of the controller of disclosure vav terminal auxiliary heating.The control Device included cool condition detection unit 310 and auxiliary heating starting unit 320.
It crosses cool condition detection unit 310 to be configured as after supply air system adjusts supply air temperature, postpones the first threshold time Whether detection vav terminal environment temperature and practical air output meet supercooling protective condition, wherein protective condition, which is subcooled, includes The difference of environment temperature and set temperature is less than or equal to the first temperature threshold, and practical air output is within a preset range.
Supply air system periodic adjustment system entirety air output and supply air temperature are first controlled by concentration variable air volume air conditioner, After adjusting supply air temperature, the controller delay T1 time of each vav terminal detects vav terminal environment temperature and practical air-supply Whether amount meets supercooling protective condition.
In cooling mode, preset range is determined according to minimum supply air rate;In a heating mode, preset range is according to maximum Air output determines.
Auxiliary heating starting unit 320 is configured as when the duration for meeting supercooling protective condition being more than second threshold Between in the case where, starting heater carry out auxiliary heating.
In this embodiment, environment temperature utmostly is adjusted by pick-up air temperature and variable air rate, then postpones first Whether threshold time detection vav terminal environment temperature and practical air output meet supercooling protective condition, are meeting supercooling protection In the case that the duration of condition is more than the second threshold time, starting heater carries out auxiliary heating, i.e., reduces to greatest extent Therefore the auxiliary heat operation opening time while improving room temperature, enables to the more energy-efficient operation of system.
In another embodiment of the disclosure, auxiliary heating starting unit 320 be configured as according to environment temperature with set The difference for determining temperature initializes the heating power of heater;According to environment temperature, set temperature and the week for acquiring environment temperature Phase adjusts the heating power of heater using pid control mode.
For example, initializing heater in the case where the difference of environment temperature and set temperature is less than second temperature threshold value Heating power is the first heating power.It is more than or equal to second temperature threshold value in the difference of environment temperature and set temperature, and less than the In the case where three temperature thresholds, the heating power for initializing heater is the second heating power.In environment temperature and set temperature Difference be greater than third temperature threshold in the case where, initialize heater heating power be third heating power, wherein third temperature It spends threshold value and is less than or equal to the first temperature threshold;First heating power is greater than the second heating power, and the second heating power is greater than third Heating power.
In one embodiment, the first heating power is, for example, the 100% of rated thermal power or maximum heating power.The The value of two heating powers is, for example, the absolute value of the difference of environment temperature and set temperature and the ratio between the absolute value of the 4th temperature threshold; Wherein, the absolute value of the 4th temperature threshold is more than or equal to the absolute value of the difference of second temperature threshold value and third temperature threshold.Third Heating power is, for example, the 0% of rated thermal power or maximum heating power.
For example, the first temperature threshold be -0.5 DEG C, second temperature threshold value be -3 DEG C, third temperature threshold be -1 DEG C, the 4th The absolute value of temperature threshold is, for example, 3 DEG C.After starting heater, if environment temperature TRingWith set temperature TIfDifference be less than -3 DEG C, then the heating power for initializing heater is 100%;If environment temperature TRingWith set temperature TIfDifference be more than or equal to -3 DEG C, And be less than -1 DEG C, then the heating power for initializing heater is 100%* | TRing-TIf|/3, if environment temperature TRingWith set temperature TIf Difference be more than or equal to -1 DEG C, then initialize heater heating power be 0%.
In this embodiment, according to the difference of environment temperature and set temperature, the heating power of heater is initialized, then PID adjusting is carried out in the heating power to heater, interior can be prevented by heater operation promotion room temperature meeting On the basis of supercooling, it is precisely controlled the initial heating power of heater, and the heating power of step-less adjustment heater, improves system Energy-saving efficiency.
In another embodiment of the disclosure, as shown in figure 4, the controller further includes auxiliary heating stop unit 410, It is configured as being more than or equal to the 5th temperature threshold in the difference of environment temperature and set temperature, and the heating power of heater is less than hair In the case where thermal power threshold value, stops heater and carry out auxiliary heating.
For example, being more than or equal to 0 DEG C in the difference of environment temperature and set temperature, and the heating power of heater is less than 5% When, stop heater and carries out auxiliary heating.
In this embodiment, in the heating power step-less adjustment process to heater, real-time detection heating power Z is needed With environment temperature TRing, the excessive auxiliary heat of investment is avoided, so that system cost resource, energy-saving effect is poor, and therefore, it is necessary to design heater Exit the condition of heating.
Fig. 5 is the structural schematic diagram of another embodiment of the controller of disclosure vav terminal auxiliary heating.The control Device processed includes memory 510 and processor 520.Wherein: memory 510 can be disk, flash memory or other any non-volatile Storage medium.Memory is used to store the instruction in embodiment corresponding to Fig. 1-2.Processor 520 is coupled to memory 510, can To implement as one or more integrated circuits, such as microprocessor or microcontroller.The processor 520 is for executing storage The instruction stored in device.
It in one embodiment, can be as shown in fig. 6, the controller 600 includes memory 610 and processor 620.Place Reason device 620 is coupled to memory 610 by BUS bus 630.The controller 600 can also be connected to outer by memory interface 640 Portion's storage device 650 can also be connected to network or an other calculating to call external data by network interface 660 Machine system (not shown).It no longer describes in detail herein.
In this embodiment, it is instructed by memory stores data, then above-metioned instruction is handled by processor, improving room While interior temperature, the more energy-efficient operation of system is enabled to.
In another embodiment of the disclosure, a kind of vav terminal is protected, which includes above-mentioned change The controller of air quantity end auxiliary heating.
In another embodiment of the disclosure, which further includes temperature sensor, air flow sensor and adds Hot device etc..Temperature sensor is configured as detection environment temperature;Air flow sensor is configured as the reality of detection vav terminal Air output;Heater is configured as the air that vav terminal is sent into auxiliary heating.
Fig. 7 is the structural schematic diagram of one embodiment of disclosure air conditioning system with variable.The air conditioning system with variable packet It includes multiple vav terminals 710 and concentrates variable air volume air conditioner 720.Variable air volume air conditioner 720 is concentrated to be configured as control air-supply System adjusts supply air temperature and air output.Between multiple vav terminals 710, and with concentrate variable air volume air conditioner 720 it Between by connection 701 constitute communication network.Control strategy carries out strategy implement by communication detection data.
External air is entered by new blower 730 concentrates variable air volume air conditioner 720, is exchanged heat by heat exchange coil 740, Air after heat exchange is delivered to air supply duct 760 by pressure fan 750, is then successively delivered to the vav terminal of the auxiliary heat of each band 710.Room air carries out return air by return air channel 770, and return air can also be exchanged heat by heat exchange coil, then by sending Blower 750 is delivered to air supply duct 760.Room air can also carry out air draft by exhaust blower 780.It is set in air supply duct 760 It is equipped with temperature sensor 790.Temperature sensor 791 is also equipped at return air.
In one embodiment, concentrating variable air volume air conditioner 720 is to be in vav terminal after adjusting air output The quantity that the vav terminal of protective condition is subcooled is greater than the case where quantity for being in the vav terminal of non-supercooling protective condition Under, improve supply air temperature;The quantity of vav terminal in vav terminal in overheating protection condition, which is greater than, is in non-mistake In the case where the quantity of the vav terminal of Thermal protection condition, supply air temperature is reduced;In supercooling or mistake in vav terminal The quantity of the vav terminal of Thermal protection condition is equal to the quantity of the vav terminal in non-supercooling or non-overheat protective condition In the case where, keep supply air temperature.Each vav terminal 710 postpone first threshold time detection vav terminal environment temperature and Whether practical air output meets supercooling protective condition, is more than the second threshold time in the duration for meeting supercooling protective condition In the case of, starting heater carries out auxiliary heating;Then auxiliary hot heating amount, auxiliary heat are put into according to initial temperature differences boundary fast accurate Implementation phase relies on step-less adjustment electric heating amount precisely stepless energy-saving run, while the auxiliary thermal power of real-time monitoring and environment temperature, Auxiliary heat pattern is quickly exited if meeting exit criteria.On the basis of the excellent temperature control of holding variable air volume system, auxiliary heat is reduced Making time improves auxiliary hot step-less adjustment control precision to reduce power, whole variable air volume system operation more energy-saving.
In another embodiment, a kind of computer readable storage medium, is stored thereon with computer program instructions, this refers to The step of order realizes the method in embodiment corresponding to Fig. 1-2 when being executed by processor.It should be understood by those skilled in the art that, Embodiment of the disclosure can provide as method, apparatus or computer program product.Therefore, complete hardware reality can be used in the disclosure Apply the form of example, complete software embodiment or embodiment combining software and hardware aspects.Moreover, the disclosure can be used one It is a or it is multiple wherein include computer usable program code computer can with non-transient storage medium (including but not limited to Magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.
The disclosure is reference according to the method for the embodiment of the present disclosure, the flow chart of equipment (system) and computer program product And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
So far, the disclosure is described in detail.In order to avoid covering the design of the disclosure, it is public that this field institute is not described The some details known.Those skilled in the art as described above, completely it can be appreciated how implementing technology disclosed herein Scheme.
Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this field Art personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.The skill of this field Art personnel are it should be understood that can modify to above embodiments in the case where not departing from the scope of the present disclosure and spirit.This public affairs The range opened is defined by the following claims.

Claims (18)

1. a kind of control method of vav terminal auxiliary heating, comprising:
After supply air system adjusts supply air temperature, delay first threshold time detection vav terminal environment temperature and practical air-supply Whether amount meets supercooling protective condition, wherein the supercooling protective condition includes that the difference of the environment temperature and set temperature is small In being equal to the first temperature threshold, and the practical air output is within a preset range;
In the case where the duration of satisfaction supercooling protective condition being more than the second threshold time, starting heater carries out auxiliary and adds Heat.
2. control method according to claim 1, wherein starting heater carries out auxiliary heating and includes:
According to the difference of the environment temperature and the set temperature, the heating power of the heater is initialized;
According to the environment temperature, the set temperature and the period for acquiring environment temperature, proportion of utilization integral differential PID control Mode adjusts the heating power of the heater.
3. control method according to claim 2, wherein the heating power for initializing the heater includes:
In the case where the difference of the environment temperature and the set temperature is less than second temperature threshold value, the heater is initialized Heating power be the first heating power;
It is more than or equal to second temperature threshold value in the difference of the environment temperature and the set temperature, and is less than third temperature threshold In the case of, the heating power for initializing the heater is the second heating power;
In the case where the difference of the environment temperature and the set temperature is greater than third temperature threshold, the heater is initialized Heating power be third heating power, wherein the third temperature threshold be less than or equal to first temperature threshold;
Wherein, first heating power is greater than second heating power, and second heating power is sent out greater than the third Thermal power.
4. control method according to claim 3, wherein
The value of first heating power is 100%;
The value of second heating power is the absolute value of the difference and the 4th temperature of the environment temperature and the set temperature Spend the ratio between the absolute value of threshold value;Wherein, the absolute value of the 4th temperature threshold is more than or equal to the second temperature threshold value and institute State the absolute value of the difference of third temperature threshold;
The value of the third heating power is 0%.
5. control method according to claim 2, further includes:
It is more than or equal to the 5th temperature threshold, and the fever function of the heater in the difference of the environment temperature and the set temperature In the case that rate is less than heating power threshold value, stops the heater and carry out auxiliary heating.
6. -5 any control method according to claim 1, wherein
In cooling mode, the preset range is determined according to minimum supply air rate;
In a heating mode, the preset range is determined according to maximum air supply rate.
7. a kind of controller of vav terminal auxiliary heating, comprising:
Cool condition detection unit is crossed, is configured as after supply air system adjusts supply air temperature, the detection of delay first threshold time becomes Whether air quantity end environmental temperature and practical air output meet supercooling protective condition, wherein the supercooling protective condition includes institute The difference for stating environment temperature and set temperature is less than or equal to the first temperature threshold, and the practical air output is within a preset range;
Heating starting unit is assisted, is configured as in the duration for meeting supercooling protective condition being more than the feelings of second threshold time Under condition, starting heater carries out auxiliary heating.
8. controller according to claim 7, wherein
The auxiliary heating starting unit is configured as the difference according to the environment temperature and the set temperature, initializes institute State the heating power of heater;According to the environment temperature, the set temperature and the period for acquiring environment temperature, proportion of utilization Integral differential pid control mode adjusts the heating power of the heater.
9. controller according to claim 8, wherein
The auxiliary heating starting unit is configured as being less than second temperature in the difference of the environment temperature and the set temperature In the case where threshold value, the heating power for initializing the heater is the first heating power;It is set in the environment temperature with described Temperature difference is determined more than or equal to second temperature threshold value, and less than in the case where third temperature threshold, initializes the heater Heating power is the second heating power;The case where the difference of the environment temperature and the set temperature is greater than third temperature threshold Under, the heating power for initializing the heater is third heating power, wherein the third temperature threshold is less than or equal to described First temperature threshold;
Wherein, first heating power is greater than second heating power, and second heating power is sent out greater than the third Thermal power.
10. controller according to claim 9, wherein
The value of first heating power is 100%;
The value of second heating power is the absolute value of the difference and the 4th temperature of the environment temperature and the set temperature Spend the ratio between the absolute value of threshold value;Wherein, the absolute value of the 4th temperature threshold is more than or equal to the second temperature threshold value and institute State the absolute value of the difference of third temperature threshold;
The value of the third heating power is 0%.
11. controller according to claim 8, further includes:
Auxiliary heating stop unit, is configured as being more than or equal to the 5th temperature in the difference of the environment temperature and the set temperature Threshold value, and the heating power of the heater carries out assisting adding less than the heater in the case where heating power threshold value, is stopped Heat.
12. according to any controller of claim 7-11, wherein
In cooling mode, the preset range is determined according to minimum supply air rate;
In a heating mode, the preset range is determined according to maximum air supply rate.
13. a kind of controller of vav terminal auxiliary heating, comprising:
Memory;And
It is coupled to the processor of the memory, the processor is configured to based on the instruction execution for being stored in the memory Such as method as claimed in any one of claims 1 to 6.
14. a kind of vav terminal, the controller including any vav terminal auxiliary heating of claim 7-13.
15. vav terminal according to claim 14 further includes in temperature sensor, air flow sensor and heater At least one;
The temperature sensor is configured as detection environment temperature;
The air flow sensor is configured as detecting the practical air output of the vav terminal;
The heater is configured as the air that vav terminal is sent into auxiliary heating.
16. a kind of air conditioning system with variable, comprising:
Vav terminal described in claims 14 or 15;And
Variable air volume air conditioner is concentrated, control supply air system is configured as and adjusts supply air temperature.
17. air conditioning system with variable according to claim 16, wherein
The concentration variable air volume air conditioner is configured as after adjusting air output, in supercooling protective condition in vav terminal Vav terminal quantity be greater than in it is non-supercooling protective condition vav terminal quantity in the case where, improve air-supply temperature Degree;The quantity of vav terminal in vav terminal in overheating protection condition is greater than the change in non-overheat protective condition In the case where the quantity of air quantity end, supply air temperature is reduced;Change in vav terminal in supercooling or overheating protection condition In the case that the quantity of air quantity end is equal to the quantity of the vav terminal in non-supercooling or non-overheat protective condition, keep sending Air temperature.
18. a kind of computer readable storage medium, is stored thereon with computer program instructions, real when which is executed by processor The step of existing method as claimed in any one of claims 1 to 6.
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