CN104729009A - Air-conditioner control method and device - Google Patents
Air-conditioner control method and device Download PDFInfo
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- CN104729009A CN104729009A CN201310726582.7A CN201310726582A CN104729009A CN 104729009 A CN104729009 A CN 104729009A CN 201310726582 A CN201310726582 A CN 201310726582A CN 104729009 A CN104729009 A CN 104729009A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses an air-conditioner control method and device. The air-conditioner control method includes steps of detecting a first temperature difference between a first water supply temperature and a first water return temperature of the air conditioning unit; judging whether a first difference between the first temperature difference and a preset temperature is larger than a first preset threshold or not; if the first difference is larger than the first preset threshold, adjusting frequency of a freezing water pump in the air conditioning unit, so that a second difference between a second temperature difference between a second water supply temperature and a second water return temperature of the air conditioning unit and the preset temperature is smaller than or equal to the first preset threshold under the adjusted frequency of the freezing water pump. The air-conditioner control method solves the technical problem of instable system load caused by variable water temperature or flow control of the air conditioners in the prior art and has the technical advantages that system load stability is maintained, refrigeration and moisturizing of the tail end of the air conditions are guaranteed and system energy consumption is lowered.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of air conditioning control method and device.
Background technology
Traditional HVAC group control system is normally by detecting the parameters such as the freezing temperature differential pressure for return main, Load Regulation is carried out to HVAC system, when air-conditioning system is a variable flow system, the nonsteady flow of general one-sided variable flow system controls, and seldom considers that the water temperature of variable flow system controls;
When adopting vari-able flow control, reduce the frequency of freezing variable frequency pump, its power can significantly decline, after chilled water moral flow reduces, the refrigerating capacity of unit can decline, power also can decline, the COP(Coefficient ofPerformance of unit, observable index) almost constant.Therefore adopt vari-able flow control just to save the energy consumption of freezing variable frequency pump, the COP of handpiece Water Chilling Units fails to improve.
In addition, the change coolant controlled principle of freezing variable flow system is improved the COP of unit.But freezing leaving water temperature can reduce refrigeration and the dehumidifying effect of air conditioning terminal after improving, affect the comfort level of end.
Therefore, not at that time, the load of air-conditioning system can be unstable for unit change water temperature and freezing variable frequency pump vari-able flow control, and then the energy consumption of system is increased, also can reduce refrigeration and the dehumidifying effect of air conditioning terminal, like this, both can affect the comfort level of client, and also can strengthen the power of end.
For above-mentioned problem, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of air conditioning control method and device, at least to solve in prior art the technical problem becoming the system loading instability that water temperature or flow-control air-conditioning cause.
According to an aspect of the embodiment of the present invention, provide a kind of air conditioning control method, comprising: detect the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature; Judge whether the first difference between the first temperature difference and predetermined set temperature is greater than the first predetermined threshold; If the first difference is greater than the first predetermined threshold, then adjust the frequency of the chilled water pump in air-conditioner set, make the second difference between the second temperature difference between the second supply water temperature of the air-conditioner set under the frequency of chilled water pump after the adjustment and the second return water temperature and predetermined set temperature be less than or equal to the first predetermined threshold.
Alternatively, the frequency of chilled water pump in adjustment air-conditioner set comprises: if the first difference is greater than the first predetermined threshold and the first temperature difference is greater than the second predetermined threshold, then improve the frequency of chilled water pump, wherein, the second predetermined threshold is predetermined set temperature and the first predetermined threshold sum; If the first difference is greater than the first predetermined threshold and the first temperature difference is less than the 3rd predetermined threshold, then reduce the frequency of chilled water pump, wherein, the 3rd predetermined threshold is the difference of predetermined set temperature and the first predetermined threshold.
Alternatively, after judging whether the first difference between the first temperature difference and predetermined set temperature is greater than the first predetermined threshold, also comprise: if the first difference is less than or equal to the first predetermined threshold, then every the return water temperature of predetermined cycle detection air-conditioner set; If the rate of descent that the 3rd return water temperature of the air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, on current period, then adjust the supply water temperature in air-conditioner set, wherein, the first predetermined rate of descent threshold value is greater than the second predetermined rate of descent threshold value; If the 3rd return water temperature is less than or equal to the first predetermined rate of descent threshold value compared with the rate of descent of the 4th return water temperature and is more than or equal to the second predetermined rate of descent threshold value, then maintain the supply water temperature on current period in air-conditioner set.
Alternatively, supply water temperature current period adjusted in air-conditioner set comprises: if rate of descent is greater than the first predetermined rate of descent threshold value, then on current period, improve the supply water temperature in air-conditioner set; If rate of descent is less than the second predetermined rate of descent threshold value, then on current period, reduce the supply water temperature in air-conditioner set.
Alternatively, supply water temperature current period improved in air-conditioner set comprises: on current period, the supply water temperature in air-conditioner set is increased by the 4th predetermined threshold; Supply water temperature current period reduced in air-conditioner set comprises: on current period, the supply water temperature in air-conditioner set is reduced the 5th predetermined threshold.
Alternatively, the first predetermined threshold is 0 or is greater than 0.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of air conditioning control device, comprising: the first detecting unit, for detecting the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature; Judging unit, for judging whether the first difference between the first temperature difference and predetermined set temperature is greater than the first predetermined threshold; First adjustment unit, for when the first difference is greater than the first predetermined threshold, the frequency of the chilled water pump in adjustment air-conditioner set, makes the second difference between the second temperature difference between the second supply water temperature of the air-conditioner set under the frequency of chilled water pump after the adjustment and the second return water temperature and predetermined set temperature be less than or equal to the first predetermined threshold.
Alternatively, first adjustment unit comprises: the first adjusting module, for when the first difference is greater than the first predetermined threshold and the first temperature difference is greater than the second predetermined threshold, improves the frequency of chilled water pump, wherein, the second predetermined threshold is predetermined set temperature and the first predetermined threshold sum; Second adjusting module, for being greater than the first predetermined threshold in the first difference and the first temperature difference is less than the 3rd predetermined threshold, reduce the frequency of chilled water pump, wherein, the 3rd predetermined threshold is the difference of predetermined set temperature and the first predetermined threshold.
Alternatively, this device also comprises: the second detecting unit, for when the first difference is less than or equal to the first predetermined threshold, then every the return water temperature of predetermined cycle detection air-conditioner set; Second adjustment unit, when the rate of descent that the 3rd return water temperature for the air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, current period adjusts the supply water temperature in air-conditioner set, wherein, the first predetermined rate of descent threshold value is greater than the second predetermined rate of descent threshold value; Maintain unit, for being less than or equal to the first predetermined rate of descent threshold value at the 3rd return water temperature compared with the rate of descent of the 4th return water temperature and being more than or equal to the second predetermined rate of descent threshold value, then maintain the supply water temperature on current period in air-conditioner set.
Alternatively, the second adjustment unit comprises: the 3rd adjusting module, during for being greater than the first predetermined rate of descent threshold value at rate of descent, current period improves the supply water temperature in air-conditioner set; 4th adjusting module, during for being less than the second predetermined rate of descent threshold value at rate of descent, current period reduces the supply water temperature in air-conditioner set.
In embodiments of the present invention, adopt the mode that confession-backwater temperature difference is controlled, by the temperature difference between supply water temperature and return water temperature and predetermined threshold are compared judgement, when not meeting preselected threshold condition, the frequency of water supply pump and the supply water temperature of handpiece Water Chilling Units are adjusted, reach the object of the load of systems stabilisation, thus achieve the refrigerating capacity and moisture-retaining capacity that ensure end, and reduce the technique effect of system energy consumption, and then solve in prior art the technical problem becoming the system loading instability that water temperature or flow-control air-conditioning cause.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of a kind of optional air conditioning control method according to the embodiment of the present invention;
Fig. 2 is the flow chart according to the optional air conditioning control method of the another kind of the embodiment of the present invention;
Fig. 3 is the flow chart of another the optional air conditioning control method according to the embodiment of the present invention;
Fig. 4 is the schematic diagram of a kind of optional air conditioning control device according to the embodiment of the present invention;
Fig. 5 is the schematic diagram according to the optional air conditioning control device of the another kind of the embodiment of the present invention;
Fig. 6 is the schematic diagram of another the optional air conditioning control device according to the embodiment of the present invention;
Fig. 7 is the schematic diagram of another the optional air conditioning control device according to the embodiment of the present invention; And
Fig. 8 is the schematic diagram of another the optional air conditioning control device according to the embodiment of the present invention.
Detailed description of the invention
First, the part noun occurred in the process be described the embodiment of the present invention or term are applicable to description below:
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of air conditioning control method, as shown in Figure 1, the air conditioning control method in the present embodiment comprises:
S102, detects the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature;
Alternatively, air conditioning control method can be, but not limited to the freezing side being applied to cold source system in the present embodiment, detects the first supply water temperature T of the freezing house steward of current air-conditioner set
for 1with the first return water temperature T
return 1the first temperature difference △ T
1.
Alternatively, detection mode in the present embodiment comprise following one of at least: detect in real time, perform one-time detection every predetermined period.
Such as, for air-conditioner set A, every cycle T
0, detect once the first supply water temperature T of the freezing house steward of current air-conditioner set
for 1with the first return water temperature T
return 1the first temperature difference △ T
1.
S104, judges whether the first difference between the first temperature difference and predetermined set temperature is greater than the first predetermined threshold;
Alternatively, default set temperature in the present embodiment can for but be not limited to: 5 DEG C.It should be noted that, when freezing supply backwater temperature difference is set to 5 DEG C, the load of air-conditioning system can be more stable, also can not affect the comfort level of client.
Alternatively, the first predetermined threshold includes but not limited in the present embodiment: 0, be greater than 0.Such as, the first predetermined threshold can be 0.5 DEG C, also can be 0 DEG C.That is, the first temperature difference △ T
1with predetermined set temperature, such as 5 DEG C, can be equal, the application does not limit this.
Such as, shown in composition graphs 3, be judged as "No" through step S304, then perform step S306, for air-conditioner set A, every the t1 time period, the first temperature difference △ T that one-time detection obtains can be judged
1with the first difference between predetermined set temperature (such as, predetermined set temperature is 5 DEG C), i.e. △ T
1-5, whether be greater than the first predetermined threshold, such as, the first predetermined threshold is 0.5 DEG C.
S106, if the first difference is greater than the first predetermined threshold, then adjust the frequency of the chilled water pump in air-conditioner set, make the second difference between the second temperature difference between the second supply water temperature of the air-conditioner set under the frequency of chilled water pump after the adjustment and the second return water temperature and predetermined set temperature be less than or equal to the first predetermined threshold.
Such as, for air-conditioner set A, if (such as, the first difference is △ T to the first difference
1-5) be greater than the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C), then adjust the frequency aHz of the chilled water pump in air-conditioner set, make the second supply water temperature T of the air-conditioner set under the frequency of chilled water pump after the adjustment
for 2with the second return water temperature T
returnthe second temperature difference △ T between 2
2with the second difference between predetermined set temperature (such as, 5 DEG C), i.e. △ T
2-5, be less than or equal to the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C).
By the embodiment that the application provides, by the difference of the supply backwater temperature difference of the air-conditioner set detected and predetermined set temperature and the first predetermined threshold are compared, the situation being greater than the first predetermined threshold is adjusted, the frequency of the chilled water pump in adjustment air-conditioner set, supply backwater temperature difference is made to be less than or equal to the first preselected threshold condition, and then realize the load stablizing air-conditioning system, and realize the energy consumption reducing unit and chilled water pump.
As the optional scheme of one, as shown in Figure 2, the frequency of the chilled water pump adjusted in air-conditioner set comprises:
S202, if the first difference is greater than the first predetermined threshold and the first temperature difference is greater than the second predetermined threshold, then improves the frequency of chilled water pump;
Alternatively, the second predetermined threshold is predetermined set temperature and the first predetermined threshold sum in the present embodiment, and such as, predetermined set temperature is 5 DEG C, and the first predetermined threshold is 0.5 DEG C, then the second predetermined threshold is 5.5 DEG C.
Such as, for air-conditioner set A, step S310 to S320 shown in composition graphs 3, if (such as, the first difference is △ T to the first difference
1-5) the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C) is greater than, and △ T
1be greater than the second predetermined threshold (such as, the second predetermined threshold is 5.5 DEG C), then improve the frequency of chilled water pump, realize the supply backwater temperature difference after maintaining adjustment with this and be less than or equal to the first predetermined threshold 0.5 DEG C, and then the load of systems stabilisation.
S204, if the first difference is greater than the first predetermined threshold and the first temperature difference is less than the 3rd predetermined threshold, then reduces the frequency of chilled water pump;
Alternatively, the 3rd predetermined threshold is the difference of predetermined set temperature and the first predetermined threshold in the present embodiment.Such as, predetermined set temperature is 5 DEG C, and the first predetermined threshold is 0.5 DEG C, then the second predetermined threshold is 4.5 DEG C.
Such as, for air-conditioner set A, step S310 to S320 shown in composition graphs 3, if (such as, the first difference is △ T to the first difference
1-5) the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C) is greater than, and △ T
1be less than the 3rd predetermined threshold (such as, the 3rd predetermined threshold is 4.5 DEG C), then reduce the frequency of chilled water pump, realize the supply backwater temperature difference after maintaining adjustment with this and be less than or equal to the first predetermined threshold 0.5 DEG C, and then the load of systems stabilisation.
By the embodiment that the application provides, by doing further judgement to the chilled water pump of the air-conditioner set being greater than the first predetermined threshold, judge whether supply backwater temperature difference meets preselected threshold condition, and then draw the frequency of chilled water pump is improved or reduce adjustment, thus reach the object of the load of systems stabilisation, and then realize the energy consumption reducing unit and chilled water pump.
As the optional scheme of one, as shown in Figure 4, in step S104, the first difference judging between the first temperature difference and predetermined set temperature also comprises after whether being greater than the first predetermined threshold:
S402, if the first difference is less than or equal to the first predetermined threshold, then every the return water temperature of predetermined cycle detection air-conditioner set;
Such as, "Yes" is judged as through step S304 shown in composition graphs 3, then perform step S308, for air-conditioner set A, when the first difference (the first difference) is less than or equal to the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C), then every predetermined period, such as t2, detects the return water temperature T of an air-conditioner set
return.
S404, if the rate of descent that the 3rd return water temperature of the air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, then on current period, adjust the supply water temperature in air-conditioner set;
Optionally, the first predetermined rate of descent threshold value (such as, X) is greater than the second predetermined rate of descent threshold value (such as, Y) in the present embodiment.
Such as, step S322 to S324 shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is greater than the first predetermined rate of descent threshold value (such as, X), or is less than the second predetermined rate of descent threshold value (such as, Y), then on current period, adjust the supply water temperature T in air-conditioner set
supply.
S406, if the 3rd return water temperature is less than or equal to the first predetermined rate of descent threshold value compared with the rate of descent of the 4th return water temperature and is more than or equal to the second predetermined rate of descent threshold value, then maintains the supply water temperature on current period in air-conditioner set.
Such as, shown in composition graphs 3, after t2 cycle time delay, judge the 3rd return water temperature T of the air-conditioner set that current period detects through step S326
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is less than or equal to the first predetermined rate of descent threshold value (such as, X), and is greater than the second predetermined rate of descent threshold value (such as, Y), then perform the supply water temperature T in air-conditioner set on step S332 maintenance current period
supply.
By the embodiment that the application provides, supply backwater temperature difference is less than or equal to the situation of the first predetermined threshold, carry out refinement judgement, judge whether return water temperature rate of descent meets preselected threshold condition, and then to the fine setting that the supply water temperature of current period air-conditioner set adjusts or maintains, avoid the problem of the load instability to the water temperature of air-conditioner set and the improper air-conditioning system caused of the FREQUENCY CONTROL of chilled water pump, and ensure that refrigerating capacity and the dehumidifying effect of air conditioning terminal.
As the optional scheme of one, supply water temperature current period adjusted in air-conditioner set comprises:
S1, if rate of descent is greater than the first predetermined rate of descent threshold value, then improves the supply water temperature in air-conditioner set on current period;
Such as, step S328 shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is greater than the first predetermined rate of descent threshold value (such as, X), then on current period, improve the supply water temperature T in air-conditioner set
supply, and then the load of systems stabilisation.
S2, if rate of descent is less than the second predetermined rate of descent threshold value, then reduces the supply water temperature in air-conditioner set on current period.
Such as, step S330 shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is less than the second predetermined rate of descent threshold value (such as, Y), then on current period, reduce the supply water temperature T in air-conditioner set
supply, and then the load of systems stabilisation.
By the embodiment provided the application, to being greater than the first predetermined rate of descent threshold value based on rate of descent, or rate of descent is less than the adjustment of two kinds of situations of the second predetermined rate of descent threshold value, make further judgement, and then the accurate adjustment realized supply water temperature, thus realize the load stablizing air-conditioning system, and ensure that refrigerating capacity and the dehumidifying effect of air conditioning terminal.
As the optional scheme of one, supply water temperature current period improved in air-conditioner set comprises: on current period, the supply water temperature in air-conditioner set is increased by the 4th predetermined threshold;
Such as, after multilevel iudge, rate of descent is greater than the first predetermined rate of descent threshold value (such as, X), needs the supply water temperature T improved on current period in air-conditioner set
supply, then can by the supply water temperature T in air-conditioner set on current period
supplyincrease the 4th predetermined threshold (such as, 0.3 DEG C).
Supply water temperature current period reduced in air-conditioner set comprises: on current period, the supply water temperature in air-conditioner set is reduced the 5th predetermined threshold.
Such as, after multilevel iudge, rate of descent is less than the first predetermined rate of descent threshold value (such as, Y), needs the supply water temperature T reduced on current period in air-conditioner set
supply, then can by the supply water temperature T in air-conditioner set on current period
supplyreduce the 5th predetermined threshold (such as, 0.5 DEG C).
Alternatively, in the present embodiment might not be equal to the raising of the supply water temperature of air-conditioner set or the amplitude of reduction adjustment.
By the embodiment provided the application, non-essential equal to the amplitude of the adjustment of supply water temperature, and then realize the accurate adjustment to supply water temperature, thus realize the load stablizing air-conditioning system, and ensure that refrigerating capacity and the dehumidifying effect of air conditioning terminal.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in description all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that can add required general hardware platform by software according to the method for above-described embodiment and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
Embodiment 2
According to the embodiment of the present invention, additionally provide a kind of air conditioning control device for implementing above-mentioned air conditioning control method, as shown in Figure 5, the air conditioning control device in the present embodiment comprises:
1) the first detecting unit 502, for detecting the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature;
Alternatively, air conditioning control method can be, but not limited to the freezing side being applied to cold source system in the present embodiment, detects the first supply water temperature T of the freezing house steward of current air-conditioner set
for 1with the first return water temperature T
return 1the first temperature difference △ T
1.
Alternatively, detection mode in the present embodiment comprise following one of at least: detect in real time, perform one-time detection every predetermined period.
Such as, for air-conditioner set A, every cycle T
0, detect once the first supply water temperature T of the freezing house steward of current air-conditioner set
for 1with the first return water temperature T
return 1the first temperature difference △ T
1.
2) judging unit 504, for judging whether the first difference between the first temperature difference and predetermined set temperature is greater than the first predetermined threshold;
Alternatively, default set temperature in the present embodiment can for but be not limited to: 5 DEG C.It should be noted that, when freezing supply backwater temperature difference is set to 5 DEG C, the load of air-conditioning system can be more stable, also can not affect the comfort level of client.
Alternatively, the first predetermined threshold includes but not limited in the present embodiment: 0, be greater than 0.Such as, the first predetermined threshold can be 0.5 DEG C, also can be 0 DEG C.That is, the first temperature difference △ T
1with predetermined set temperature, such as 5 DEG C, can be equal, the application does not limit this.
Such as, shown in composition graphs 3, for air-conditioner set A, every the t1 time period, the first temperature difference △ T that one-time detection obtains can be judged
1with the first difference between predetermined set temperature (such as, predetermined set temperature is 5 DEG C), i.e. △ T
1-5, whether be greater than the first predetermined threshold, such as, the first predetermined threshold is 0.5 DEG C.
3) the first adjustment unit 506, for when the first difference is greater than the first predetermined threshold, the frequency of the chilled water pump in adjustment air-conditioner set, makes the second difference between the second temperature difference between the second supply water temperature of the air-conditioner set under the frequency of chilled water pump after the adjustment and the second return water temperature and predetermined set temperature be less than or equal to the first predetermined threshold.
Such as, for air-conditioner set A, if (such as, the first difference is △ T to the first difference
1-5) be greater than the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C), then adjust the frequency aHz of the chilled water pump in air-conditioner set, make the second supply water temperature T of the air-conditioner set under the frequency of chilled water pump after the adjustment
for 2with the second return water temperature T
return 2between the second temperature difference △ T
2with the second difference between predetermined set temperature (such as, 5 DEG C), i.e. △ T
2-5, be less than or equal to the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C).
By the embodiment that the application provides, by the difference of the supply backwater temperature difference of the air-conditioner set detected and predetermined set temperature and the first predetermined threshold are compared, the situation being greater than the first predetermined threshold is adjusted, the frequency of the chilled water pump in adjustment air-conditioner set, supply backwater temperature difference is made to be less than or equal to the first preselected threshold condition, and then realize the load stablizing air-conditioning system, and realize the energy consumption reducing unit and chilled water pump.
As the optional scheme of one, as shown in Figure 6, the first adjustment unit 506 comprises:
1) the first adjusting module 602, for when the first difference is greater than the first predetermined threshold and the first temperature difference is greater than the second predetermined threshold, improve the frequency of chilled water pump, wherein, the second predetermined threshold is predetermined set temperature and the first predetermined threshold sum;
Alternatively, the second predetermined threshold is predetermined set temperature and the first predetermined threshold sum in the present embodiment, and such as, predetermined set temperature is 5 DEG C, and the first predetermined threshold is 0.5 DEG C, then the second predetermined threshold is 5.5 DEG C.
Such as, for air-conditioner set A, if (such as, the first difference is △ T to the first difference
1-5) the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C) is greater than, and △ T
1be greater than the second predetermined threshold (such as, the second predetermined threshold is 5.5 DEG C), then improve the frequency of chilled water pump, realize the supply backwater temperature difference after maintaining adjustment with this and be less than or equal to the first predetermined threshold 0.5 DEG C, and then the load of systems stabilisation.
2) the second adjusting module 604, for being greater than the first predetermined threshold in the first difference and the first temperature difference is less than the 3rd predetermined threshold, reduce the frequency of chilled water pump, wherein, the 3rd predetermined threshold is the difference of predetermined set temperature and the first predetermined threshold.
Alternatively, the 3rd predetermined threshold is the difference of predetermined set temperature and the first predetermined threshold in the present embodiment.Such as, predetermined set temperature is 5 DEG C, and the first predetermined threshold is 0.5 DEG C, then the second predetermined threshold is 4.5 DEG C.
Such as, for air-conditioner set A, if (such as, the first difference is △ T to the first difference
1-5) the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C) is greater than, and △ T
1be less than the 3rd predetermined threshold (such as, the 3rd predetermined threshold is 4.5 DEG C), then reduce the frequency of chilled water pump, realize the supply backwater temperature difference after maintaining adjustment with this and be less than or equal to the first predetermined threshold 0.5 DEG C, and then the load of systems stabilisation.
By the embodiment that the application provides, by doing further judgement to the chilled water pump of the air-conditioner set being greater than the first predetermined threshold, judge whether supply backwater temperature difference meets preselected threshold condition, and then draw the frequency of chilled water pump is improved or reduce adjustment, thus reach the object of the load of systems stabilisation, and then realize the energy consumption reducing unit and chilled water pump.
As the optional scheme of one, as shown in Figure 7, the air conditioning control device in the present embodiment also comprises:
1) the second detecting unit 702, for when the first difference is less than or equal to the first predetermined threshold, then every the return water temperature of predetermined cycle detection air-conditioner set;
Such as, shown in composition graphs 3, for air-conditioner set A, when the first difference (the first difference) is less than or equal to the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C), then every predetermined period, such as t2, detects the return water temperature T of an air-conditioner set
return.
2) the second adjustment unit 704, when the rate of descent that the 3rd return water temperature for the air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, current period adjusts the supply water temperature in air-conditioner set, wherein, the first predetermined rate of descent threshold value is greater than the second predetermined rate of descent threshold value;
Such as, shown in composition graphs 3, for air-conditioner set A, when the first difference (the first difference) is less than or equal to the first predetermined threshold (such as, the first predetermined threshold is 0.5 DEG C), then every predetermined period, such as t2, detects the return water temperature T of an air-conditioner set
return.
3) maintain unit 706, for being less than or equal to the first predetermined rate of descent threshold value at the 3rd return water temperature compared with the rate of descent of the 4th return water temperature and being more than or equal to the second predetermined rate of descent threshold value, then maintain the supply water temperature on current period in air-conditioner set.
Such as, shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is less than or equal to the first predetermined rate of descent threshold value (such as, X), and is greater than the second predetermined rate of descent threshold value (such as, Y), then maintain the supply water temperature T on current period in air-conditioner set
supply.
By the embodiment that the application provides, supply backwater temperature difference is less than or equal to the situation of the first predetermined threshold, carry out refinement judgement, judge whether return water temperature rate of descent meets preselected threshold condition, and then to the fine setting that the supply water temperature of current period air-conditioner set adjusts or maintains, avoid the problem of the load instability to the water temperature of air-conditioner set and the improper air-conditioning system caused of the FREQUENCY CONTROL of chilled water pump, and ensure that refrigerating capacity and the dehumidifying effect of air conditioning terminal.
As the optional scheme of one, as shown in Figure 8, the second adjustment unit 704 comprises:
1) the 3rd adjusting module 802, during for being greater than the first predetermined rate of descent threshold value at rate of descent, current period improves the supply water temperature in air-conditioner set;
Such as, shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is greater than the first predetermined rate of descent threshold value (such as, X), then on current period, improve the supply water temperature T in air-conditioner set
supply, and then the load of systems stabilisation.
2) the 4th adjusting module 804, during for being less than the second predetermined rate of descent threshold value at rate of descent, current period reduces the supply water temperature in air-conditioner set.
Such as, shown in composition graphs 3, after t2 cycle time delay, the 3rd return water temperature T of the air-conditioner set that current period detects
return 3comparatively go up the 4th return water temperature T of the freezing return pipe that a cycle detects
return 4rate of descent be d (T
return 4-T
return 3)/dt, draws rate of descent d (T if judge
return 4-T
return 3)/dt is less than the second predetermined rate of descent threshold value (such as, Y), then on current period, reduce the supply water temperature T in air-conditioner set
supply, and then the load of systems stabilisation.
By the embodiment provided the application, to being greater than the first predetermined rate of descent threshold value based on rate of descent, or rate of descent is less than the adjustment of two kinds of situations of the second predetermined rate of descent threshold value, make further judgement, and then the accurate adjustment realized supply water temperature, thus realize the load stablizing air-conditioning system, and ensure that refrigerating capacity and the dehumidifying effect of air conditioning terminal.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed client, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an air conditioning control method, is characterized in that, comprising:
Detect the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature;
Judge whether the first difference between described first temperature difference and predetermined set temperature is greater than the first predetermined threshold;
If described first difference is greater than described first predetermined threshold, then adjust the frequency of the chilled water pump in described air-conditioner set, make the second temperature difference between the second supply water temperature of the described air-conditioner set under the frequency of described chilled water pump after the adjustment and the second return water temperature and the second difference between described predetermined set temperature be less than or equal to described first predetermined threshold.
2. method according to claim 1, is characterized in that, the frequency of the chilled water pump in the described air-conditioner set of described adjustment comprises:
If described first difference is greater than described first predetermined threshold and described first temperature difference is greater than the second predetermined threshold, then improve the frequency of described chilled water pump, wherein, described second predetermined threshold is described predetermined set temperature and described first predetermined threshold sum;
If described first difference is greater than described first predetermined threshold and described first temperature difference is less than the 3rd predetermined threshold, then reduce the frequency of described chilled water pump, wherein, described 3rd predetermined threshold is the difference of described predetermined set temperature and described first predetermined threshold.
3. method according to claim 1, is characterized in that, after judging whether the first difference between described first temperature difference and predetermined set temperature is greater than the first predetermined threshold, also comprises:
If described first difference is less than or equal to described first predetermined threshold, then every the return water temperature of air-conditioner set described in predetermined cycle detection;
If the rate of descent that the 3rd return water temperature of the described air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, on described current period, then adjust the supply water temperature in described air-conditioner set, wherein, described first predetermined rate of descent threshold value is greater than described second predetermined rate of descent threshold value;
If the rate of descent of more described 4th return water temperature of described 3rd return water temperature is less than or equal to described first predetermined rate of descent threshold value and be more than or equal to described second predetermined rate of descent threshold value, then maintain the supply water temperature in described air-conditioner set on described current period.
4. method according to claim 3, is characterized in that, described on described current period the supply water temperature adjusted in described air-conditioner set comprise:
If described rate of descent is greater than described first predetermined rate of descent threshold value, then on described current period, improve the supply water temperature in described air-conditioner set;
If described rate of descent is less than described second predetermined rate of descent threshold value, then on described current period, reduce the supply water temperature in described air-conditioner set.
5. method according to claim 4, is characterized in that,
On described current period, the supply water temperature improved in described air-conditioner set comprises: on described current period, the supply water temperature in described air-conditioner set is increased by the 4th predetermined threshold;
On described current period, the supply water temperature reduced in described air-conditioner set comprises: on described current period, the supply water temperature in described air-conditioner set is reduced the 5th predetermined threshold.
6. method according to any one of claim 1 to 5, is characterized in that, described first predetermined threshold is 0 or is greater than 0.
7. an air conditioning control device, is characterized in that, comprising:
First detecting unit, for detecting the first temperature difference between the first supply water temperature of current air-conditioner set and the first return water temperature;
Judging unit, for judging whether the first difference between described first temperature difference and predetermined set temperature is greater than the first predetermined threshold;
First adjustment unit, for when described first difference is greater than described first predetermined threshold, adjust the frequency of the chilled water pump in described air-conditioner set, make the second temperature difference between the second supply water temperature of the described air-conditioner set under the frequency of described chilled water pump after the adjustment and the second return water temperature and the second difference between described predetermined set temperature be less than or equal to described first predetermined threshold.
8. device according to claim 7, is characterized in that, described first adjustment unit comprises:
First adjusting module, for when described first difference is greater than described first predetermined threshold and described first temperature difference is greater than the second predetermined threshold, improve the frequency of described chilled water pump, wherein, described second predetermined threshold is described predetermined set temperature and described first predetermined threshold sum;
Second adjusting module, for being greater than described first predetermined threshold in described first difference and described first temperature difference is less than the 3rd predetermined threshold, reduce the frequency of described chilled water pump, wherein, described 3rd predetermined threshold is the difference of described predetermined set temperature and described first predetermined threshold.
9. device according to claim 7, is characterized in that, also comprises:
Second detecting unit, for when described first difference is less than or equal to described first predetermined threshold, then every the return water temperature of air-conditioner set described in predetermined cycle detection;
Second adjustment unit, when the rate of descent that the 3rd return water temperature for the described air-conditioner set detected on current period comparatively goes up the 4th return water temperature of the freezing return pipe that a cycle detects is greater than the first predetermined rate of descent threshold value or is less than the second predetermined rate of descent threshold value, described current period adjusts the supply water temperature in described air-conditioner set, wherein, described first predetermined rate of descent threshold value is greater than described second predetermined rate of descent threshold value;
Maintain unit, for being less than or equal to described first predetermined rate of descent threshold value at the rate of descent of more described 4th return water temperature of described 3rd return water temperature and being more than or equal to described second predetermined rate of descent threshold value, then maintain the supply water temperature in described air-conditioner set on described current period.
10. device according to claim 9, is characterized in that, described second adjustment unit comprises:
3rd adjusting module, for when described rate of descent is greater than described first predetermined rate of descent threshold value, described current period improves the supply water temperature in described air-conditioner set;
4th adjusting module, for when described rate of descent is less than described second predetermined rate of descent threshold value, described current period reduces the supply water temperature in described air-conditioner set.
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