CN104566800B - Cold quantity combination control method and device for fixed-frequency air conditioning unit - Google Patents
Cold quantity combination control method and device for fixed-frequency air conditioning unit Download PDFInfo
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- CN104566800B CN104566800B CN201410811971.4A CN201410811971A CN104566800B CN 104566800 B CN104566800 B CN 104566800B CN 201410811971 A CN201410811971 A CN 201410811971A CN 104566800 B CN104566800 B CN 104566800B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004378 air conditioning Methods 0.000 title abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000009897 systematic effect Effects 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a cold quantity combination control method and device of a fixed-frequency air conditioning unit. The method comprises the following steps: determining a cold quantity combination value set of the fixed-frequency air conditioning unit; detecting the current cold quantity combination value of the fixed-frequency air conditioning unit; detecting the return air temperature of the fixed-frequency air conditioning unit; judging whether the return air temperature is greater than a first preset threshold value or not; and if the return air temperature is greater than a first preset threshold value, adjusting the cold quantity combination value of the fixed-frequency air conditioning unit from the current cold quantity combination value to the cold quantity combination value which is closest to the current cold quantity combination value in the multiple cold quantity combination values. According to the invention, the problem that the service life of the compressor is influenced by frequent starting and stopping of the compressor when the cold quantity combination control is carried out on the fixed-frequency air conditioning unit is solved, and the effect of prolonging the service life of the unit is achieved by adjusting the cold quantity combination value of the fixed-frequency air conditioning unit from the current cold quantity combination value to the cold quantity combination value which is closest to the current cold quantity combination value in the multiple cold quantity combination values when the return air temperature is greater than the first preset threshold value.
Description
Technical field
The present invention relates to field of air conditioning, a kind of cold combination control method in particular to fixed frequency air conditioner unit and
Device.
Background technology
The spatial load forecasting of multisystem fixed frequency air conditioner unit is mainly according to the temperature between return air temperature and design temperature at present
Poor Δ t come control the start-stop of compressor (according to " first open and first stop, first stop first to open " principle control), adjustment output cold size with
Actual load demand is adapted to, so as to reach the requirement of control return air temperature.
For example, the duty control method of existing multisystem fixed frequency air conditioner unit is as follows：
As 1 DEG C of Δ t ＞, compressor A (the longest compressor of dwell time is opened) is opened, if the compressor cold of operation
Combination is much larger than actual load, then return air temperature reduces rapidly, and makes ＜ -1 DEG C of Δ t；After ＜ -1 DEG C of Δ t, stop compressor B
(opening time, longest compressor was stopped), if the compressor cold combination of operation is much smaller than actual load, return air temperature is fast
Speed rises；As Δ t ＞ 1, compressor C ... is opened, after several similar procedures, system can just operate in cold close in fact
The compressor set conjunction state of border load, but after temperature difference break point is reached, and a wheel can be passed through and circulated, so adjusted repeatedly with self
Save cold combination.
During above-mentioned cold combination adjustment, return air temperature can be made sometimes hot and sometimes cold, influence comfort level, and adjust
The frequent start-stop of compressor can be caused in pilot process, influences the service life of compressor, and then influence the reliability of unit.
During for carrying out cold combination control in correlation technique to fixed frequency air conditioner unit, high frequent start-stop influences compression
The problem of machine service life, not yet propose effective solution at present.
The content of the invention
It is a primary object of the present invention to provide the cold combination control method and device of a kind of fixed frequency air conditioner unit, with solution
Certainly to fixed frequency air conditioner unit carry out cold combination control when, high frequent start-stop influence the compressor service life the problem of.
To achieve these goals, according to an aspect of the invention, there is provided a kind of cold group of fixed frequency air conditioner unit
Combination control method.
The cold combination control method of fixed frequency air conditioner unit according to the present invention includes：Determine the cold of fixed frequency air conditioner unit
Value set is combined, wherein, cold combination value set includes multiple cold combined values fixed frequency air conditioner unit inherently；Detection is fixed
The current cold combined value of frequency air-conditioner set；Detect the return air temperature of fixed frequency air conditioner unit；Judge whether return air temperature is more than the
One predetermined threshold value；If return air temperature is more than the first predetermined threshold value, by the cold combined value of fixed frequency air conditioner unit by current cold
Amount combined value is adjusted into multiple cold combined values and the immediate cold combined value of current cold combined value.
Further, before judging whether return air temperature is more than the first predetermined threshold value, this method further includes：The fixed frequency of detection
The operational mode of air-conditioner set, the cold combined value of fixed frequency air conditioner unit is adjusted to multiple cold groups by current cold combined value
Include in conjunction value with the immediate cold combined value of current cold combined value：If detect the operational mode of fixed frequency air conditioner unit
For refrigeration mode, then the cold combined value of fixed frequency air conditioner unit is adjusted into multiple cold combined values by current cold combined value
Closest and more than current cold combined value the cold combined value with current cold combined value.
Further, if it is judged that return air temperature is not more than the first predetermined threshold value, and fixed frequency air conditioner unit is detected
Operational mode be refrigeration mode, this method further includes：Judge whether return air temperature is less than the second predetermined threshold value, wherein, second
Predetermined threshold value is less than the first predetermined threshold value；If return air temperature is less than the second predetermined threshold value, by the cold of fixed frequency air conditioner unit
Combined value by current cold combined value adjust into multiple cold combined values with current cold combined value closest to and less than work as
The cold combined value of preceding cold combined value；If return air temperature is not less than the second predetermined threshold value, fixed frequency air conditioner unit is maintained
Cold combined value is constant.
Further, by the cold combined value of fixed frequency air conditioner unit by current cold combined value adjust to current cold group
The immediate cold combined value of conjunction value includes：, will be fixed if the operational mode for detecting fixed frequency air conditioner unit is heating mode
The cold combined value of frequency air-conditioner set is adjusted into multiple cold combined values and current cold combined value by current cold combined value
Cold combined value immediate and less than current cold combined value.
Further, if it is judged that return air temperature is not more than the first predetermined threshold value, and fixed frequency air conditioner unit is detected
Operational mode be heating mode, this method further includes：Judge whether return air temperature is less than the second predetermined threshold value, wherein, second
Predetermined threshold value is less than the first predetermined threshold value；If return air temperature is less than the second predetermined threshold value, by the cold of fixed frequency air conditioner unit
Combined value is adjusted into multiple cold combined values immediate with current cold combined value by current cold combined value and is more than
The cold combined value of current cold combined value；If return air temperature is not less than the second predetermined threshold value, fixed frequency air conditioner unit is maintained
Cold combined value it is constant.
Further, the first predetermined threshold value is determined by the following method：Obtain the design temperature of fixed frequency air conditioner unit；Determine
Preset temperature deviation；Calculate the sum of design temperature and preset temperature deviation of fixed frequency air conditioner unit；By fixed frequency air conditioner unit
Design temperature and the sum of preset temperature deviation be used as the first predetermined threshold value.
Further, the second predetermined threshold value is determined by the following method：Calculate the design temperature of fixed frequency air conditioner unit with it is pre-
If the difference of temperature deviation value；Using the difference of the design temperature of fixed frequency air conditioner unit and preset temperature deviation as the second default threshold
Value.
To achieve these goals, according to another aspect of the present invention, there is provided a kind of cold group of fixed frequency air conditioner unit
Close control device.
The cold grouped controls of fixed frequency air conditioner unit according to the present invention include：Determination unit, for determining fixed frequency
The cold combination value set of air-conditioner set, wherein, cold combination value set includes fixed frequency air conditioner unit inherently multiple cold
Measure combined value；First detection unit, for detecting the current cold combined value of fixed frequency air conditioner unit；Second detection unit, is used for
Detect the return air temperature of fixed frequency air conditioner unit；First judging unit, for judging whether return air temperature is more than the first predetermined threshold value；
First adjustment unit, for when return air temperature is more than the first predetermined threshold value, by the cold combined value of fixed frequency air conditioner unit by working as
Preceding cold combined value is adjusted into multiple cold combined values and the immediate cold combined value of current cold combined value.
Further, which further includes：3rd detection unit, for detecting the operational mode of fixed frequency air conditioner unit, the
One adjustment unit, for when it is refrigeration mode to detect the operational mode of fixed frequency air conditioner unit, by the cold of fixed frequency air conditioner unit
Amount combined value is adjusted into multiple cold combined values closest with current cold combined value by current cold combined value and is more than
The cold combined value of current cold combined value.
Further, if the first judging unit judges that return air temperature is not more than the first predetermined threshold value, and the 3rd inspection
Survey unit and detect that the operational mode of fixed frequency air conditioner unit is refrigeration mode, which further includes：Second judging unit, for sentencing
Whether disconnected return air temperature is less than the second predetermined threshold value, wherein, the second predetermined threshold value is less than the first predetermined threshold value；Second adjusts list
Member, for when return air temperature is less than the second predetermined threshold value, the cold combined value of fixed frequency air conditioner unit to be combined by current cold
Value adjusts into multiple cold combined values closest and less than current cold combined value the cold group with current cold combined value
Conjunction value；Maintenance unit, for when return air temperature is not less than the second predetermined threshold value, maintaining the cold combined value of fixed frequency air conditioner unit
It is constant.
By the present invention, using method comprising the following steps：Determine the cold combination value set of fixed frequency air conditioner unit, its
In, cold combination value set includes multiple cold combined values fixed frequency air conditioner unit inherently；Detect fixed frequency air conditioner unit
Current cold combined value；Detect the return air temperature of fixed frequency air conditioner unit；Judge whether return air temperature is more than the first predetermined threshold value；Such as
Fruit return air temperature is more than the first predetermined threshold value, then by the cold combined value of fixed frequency air conditioner unit by current cold combined value adjust to
With the immediate cold combined value of current cold combined value in multiple cold combined values, solve cold to the progress of fixed frequency air conditioner unit
During amount combination control, the problem of high frequent start-stop influences the compressor service life, so that it is first pre- by being more than in return air temperature
If during threshold value, the cold combined value of fixed frequency air conditioner unit is adjusted into multiple cold combined values with working as by current cold combined value
The preceding immediate cold combined value of cold combined value, effectively prevent the start-stop of unwanted cold combination compressor, reaches
Lift the effect of unit service life.
Brief description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the first embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention；
Fig. 2 is the flow chart of the second embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention；
Fig. 3 be the embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention refrigeration mode under it is cold
The schematic diagram of amount combination control；
Fig. 4 be the embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention heating mode under it is cold
The schematic diagram of amount combination control；
Fig. 5 is the schematic diagram of the first embodiment of the cold grouped controls of fixed frequency air conditioner unit according to the present invention；
Fig. 6 is the schematic diagram of the second embodiment of the cold grouped controls of fixed frequency air conditioner unit according to the present invention；
And
Fig. 7 is the systematic schematic diagram of the cold grouped controls of fixed frequency air conditioner unit according to the present invention.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
In order to make those skilled in the art more fully understand application scheme, below in conjunction with the embodiment of the present application
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present application, it is clear that described embodiment is only
The embodiment of the application part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model of the application protection
Enclose.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments herein described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
According to an embodiment of the invention, there is provided a kind of cold combination control method of fixed frequency air conditioner unit.
Fig. 1 is the flow chart of the first embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention.
As shown in Figure 1, the method comprising the steps of S102 to step S110：
Step S102, determines the cold combination value set of fixed frequency air conditioner unit, wherein, cold combination value set includes fixed frequency
The multiple cold combined values of air-conditioner set inherently.
For a multisystem fixed frequency air conditioner unit, by control air-conditioner set different compressors unlatching with
Stop, so that cold combined value is controlled, to achieve the purpose that the load of adjusting air conditioning group.One multisystem fixed frequency air conditioner unit
The start-stop combination of compressor be fixed, therefore it has fixed cold combined value.In the cold combination to air-conditioner set
During value is mediated, any one the cold combined value adjusted is the cold combination in cold combination value set
Value, including current cold combined value.
For example, the cold combination of N system fixed frequency air conditioners unit inherently is as shown in table 1：
Table 1
Step S104, detects the current cold combined value of fixed frequency air conditioner unit.
Current cold combined value combines a cold combined value in value set for the cold of fixed frequency air conditioner unit.
Step S106, detects the return air temperature of fixed frequency air conditioner unit.
Step S108, judges whether return air temperature is more than the first predetermined threshold value.
First predetermined threshold value is a reference number of the cold combined value set in advance for needing to adjust fixed frequency air conditioner unit
Value.It is more than the situation of the first predetermined threshold value for return air temperature, this method will take certain means to control opening for compressor
Stop combining, to adjust cold combined value.The history for the spatial load forecasting that the setting of first predetermined threshold value is referred to air-conditioner set is held
Professional etiquette rule sets, or can also empirically formula etc. set.Certainly, first is obtained using any type method to preset
Threshold value is all within protection scope of the present invention.
Preferably, the first predetermined threshold value can be determined by the following method：Obtain the design temperature of fixed frequency air conditioner unit；Really
Determine preset temperature deviation；Calculate the sum of design temperature and preset temperature deviation of fixed frequency air conditioner unit；By fixed frequency air conditioner machine
The sum of the design temperature of group and preset temperature deviation are used as the first predetermined threshold value.
This preferably obtains the method for the first predetermined threshold value setting the acquisition of the first predetermined threshold value and fixed frequency air conditioner unit
The contact of constant temperature degree together, is enhancing the accuracy of the first predetermined threshold value finally obtained.Here, preset temperature deviation is
Predetermined temperature deviation, fixed frequency air conditioner unit design temperature change when within the scope of the deviation, can
To think that current cold combined value is suitable, it is not necessary to readjust.It should be noted that preset temperature deviation can be with
Set according to the specific requirements of user, or with reference to empirical value.Certainly, it is inclined using any type method acquisition preset temperature
Difference is all within protection scope of the present invention.
Step S110, if return air temperature is more than the first predetermined threshold value, by the cold combined value of fixed frequency air conditioner unit by
Current cold combined value is adjusted into multiple cold combined values and the immediate cold combined value of current cold combined value.
When detect return air temperature be more than the first predetermined threshold value, it is necessary to which the cold combined value of fixed frequency air conditioner unit is adjusted
Section, to adapt to the demand of actual load.For example, when return air temperature is more than the first predetermined threshold value (temperature drift), currently
Air-conditioner set operational mode be heating mode, therefore, can be by the cold combined value of fixed frequency air conditioner unit by current cold group
Conjunction value adjusts into multiple cold combined values immediate with current cold combined value and cold less than current cold combined value
Measure combined value (reducing temperature).Due to the cold combined value being closest to adjusted, because of adjusting cold combined value
The change of the start-stop of the compressor of caused air-conditioner set is smaller, and then the influence to compressor in itself is little.
The embodiment is as a result of following steps：Determine the cold combination value set of fixed frequency air conditioner unit, wherein, cold
Combination value set includes multiple cold combined values fixed frequency air conditioner unit inherently；Detect the current cold of fixed frequency air conditioner unit
Combined value；Detect the return air temperature of fixed frequency air conditioner unit；Judge whether return air temperature is more than the first predetermined threshold value；If return air temperature
Degree is more than the first predetermined threshold value, then adjusts the cold combined value of fixed frequency air conditioner unit to multiple colds by current cold combined value
With the immediate cold combined value of current cold combined value in combined value, solve and cold combination control is carried out to fixed frequency air conditioner unit
When processed, the problem of high frequent start-stop influences the compressor service life, and then by when return air temperature is more than the first predetermined threshold value,
The cold combined value of fixed frequency air conditioner unit is adjusted into multiple cold combined values and current cold group by current cold combined value
Conjunction is worth immediate cold combined value, effectively prevent the start-stop of unwanted cold combination compressor, has reached lifting unit
The effect of service life.
Fig. 2 is the flow chart of the second embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention.
The embodiment can be as a kind of preferred embodiment of embodiment illustrated in fig. 1.As shown in Fig. 2, the method comprising the steps of S201
To step S206：
Step S201, determines the cold combination value set of fixed frequency air conditioner unit, wherein, cold combination value set includes fixed frequency
The multiple cold combined values of air-conditioner set inherently.
The step is with step S102, and which is not described herein again.
Step S202, detects the current cold combined value of fixed frequency air conditioner unit.
The step is with step S104, and which is not described herein again.
Step S203, detects the return air temperature of fixed frequency air conditioner unit.
The step is with step S106, and which is not described herein again.
Step S204, detects the operational mode of fixed frequency air conditioner unit.
The operational mode of fixed frequency air conditioner unit includes heating mode and refrigeration mode.In the different operational mode of above two
Down, it is necessary to carry out the adjusting of different modes to the cold combined value of fixed frequency air conditioner unit.
Step S205, judges whether return air temperature is more than the first predetermined threshold value.
The step is with step S108, and which is not described herein again.
Step S206, if return air temperature is more than the first predetermined threshold value, and detects the operation mould of fixed frequency air conditioner unit
Formula is refrigeration mode, then adjusts the cold combined value of fixed frequency air conditioner unit to multiple cold combined values by current cold combined value
In with current cold combined value closest to and more than current cold combined value cold combined value.
When detecting that return air temperature is more than the first predetermined threshold value (return air temperature is higher), and the operation of fixed frequency air conditioner unit
Pattern is refrigeration mode, then illustrates that the current refrigeration effect needs of fixed frequency air conditioner unit are further strengthened, so that return air temperature
Tend to suitable (lowering), thus can readjust the cold combined value of fixed frequency air conditioner unit to current cold combined value most
Cold combined value close and more than current cold combined value.
If it is judged that return air temperature is not more than the first predetermined threshold value, and detect the operational mode of fixed frequency air conditioner unit
For refrigeration mode, this method can also include：Judge whether return air temperature is less than the second predetermined threshold value, wherein, the second default threshold
Value is less than the first predetermined threshold value；If return air temperature is less than the second predetermined threshold value, by the cold combined value of fixed frequency air conditioner unit
Adjust into multiple cold combined values closest with current cold combined value by current cold combined value and be less than current cold
The cold combined value of combined value；If return air temperature is not less than the second predetermined threshold value, the cold group of fixed frequency air conditioner unit is maintained
Conjunction value is constant.
If it is judged that return air temperature is less than the second predetermined threshold value (return air temperature is relatively low), and detect fixed frequency air conditioner machine
The operational mode of group is refrigeration mode, then illustrating the current refrigeration effect of fixed frequency air conditioner unit needs to weaken, so that return air temperature
Degree tends to suitable (going up), thus can readjust the cold combined value of fixed frequency air conditioner unit to current cold combined value
Cold combined value closest and less than current cold combined value.If it is judged that return air temperature is in the first predetermined threshold value and
Between two predetermined threshold values, it may be considered that current return air temperature is suitable, it is not necessary to change and readjust current cold combination
Value.
If it is judged that return air temperature is more than the first predetermined threshold value, and detect that the operational mode of fixed frequency air conditioner unit is
Heating mode, then by the cold combined value of fixed frequency air conditioner unit by current cold combined value adjust into multiple cold combined values with
Current cold combined value is immediate and is less than the cold combined value of current cold combined value.
When detecting that return air temperature is more than the first predetermined threshold value (return air temperature is higher), and the operation of fixed frequency air conditioner unit
Pattern is heating mode, then illustrates the current heating effect of fixed frequency air conditioner unit and need to weaken, so that return air temperature tends to close
Suitable (lowering), therefore the cold combined value of fixed frequency air conditioner unit can be readjusted to immediate with current cold combined value
And less than the cold combined value of current cold combined value.
If it is judged that return air temperature is not more than the first predetermined threshold value, and detect the operational mode of fixed frequency air conditioner unit
For heating mode, this method can also include：Judge whether return air temperature is less than the second predetermined threshold value, wherein, the second default threshold
Value is less than the first predetermined threshold value；If return air temperature is less than the second predetermined threshold value, by the cold combined value of fixed frequency air conditioner unit
Adjusted by current cold combined value into multiple cold combined values immediate with current cold combined value and cold more than current
Measure the cold combined value of combined value；If return air temperature is not less than the second predetermined threshold value, the cold of fixed frequency air conditioner unit is maintained
Combined value is constant.
If it is judged that return air temperature is less than the second predetermined threshold value (return air temperature is relatively low), and detect fixed frequency air conditioner machine
The operational mode of group is heating mode, then illustrates that the current heating effect needs of fixed frequency air conditioner unit are further strengthened, so that
Return air temperature tends to suitable (going up), therefore the cold combined value that can readjust fixed frequency air conditioner unit arrives and current cold
Combined value is immediate and is more than the cold combined value of current cold combined value.If it is judged that return air temperature is default first
Between threshold value and the second predetermined threshold value, it may be considered that current return air temperature is suitable, it is not necessary to which change is readjusted current
Cold combined value.
Preferably, the first predetermined threshold value is determined by the following method：Obtain the design temperature of fixed frequency air conditioner unit；Determine pre-
If temperature deviation value；Calculate the sum of design temperature and preset temperature deviation of fixed frequency air conditioner unit；By fixed frequency air conditioner unit
The sum of design temperature and preset temperature deviation are used as the first predetermined threshold value.And the second default threshold is determined by the following method
Value：Calculate the design temperature of fixed frequency air conditioner unit and the difference of preset temperature deviation；By the design temperature of fixed frequency air conditioner unit with
The difference of preset temperature deviation is as the second predetermined threshold value.
Fig. 3 is under the refrigeration mode of the embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention
The schematic diagram of cold combination control.From figure 3, it can be seen that by detecting actual measurement return air temperature (i.e. return air temperature), determining return air
Design temperature (i.e. design temperature) and design temperature deviation (i.e. preset temperature deviation), can obtain actual measurement return air temperature, return air
Relation between design temperature and design temperature deviation.Under the refrigeration mode, when actual measurement return air temperature is less than return air setting temperature
During the difference of degree and design temperature deviation, cold can be switched and be incorporated into less than the former nearest cold combination for running combination；
When actual measurement return air temperature is more than the sum of return air design temperature and design temperature deviation, cold can be switched and be incorporated into more than former fortune
The nearest cold combination of row combination；When actual measurement return air temperature in the difference of return air design temperature and design temperature deviation with returning
When between the sum of wind design temperature and design temperature deviation, maintain former combined running state constant.
For example, air-conditioner set operates in refrigeration mode, and the combination that current cold combined value size is the H in table 1
It is worth size.Judge actual measurement return air temperature T realities and the deviation of design temperature T, there are following three kinds of situations：
(1)TIt is real＜ T-Δ P, then a nearest combination G operation of the system operation to cold combination less than H；
(2)TIt is real＞ T+ Δ P, then a nearest combination I operation of the system operation to cold combination more than H；
(3)T—ΔP≤TIt is real≤ T+ Δ P, then continue to former operating status.
Fig. 4 be the embodiment of the cold combination control method of fixed frequency air conditioner unit according to the present invention heating mode under it is cold
The schematic diagram of amount combination control.From fig. 4, it can be seen that by detecting actual measurement return air temperature (i.e. return air temperature), determining that return air is set
Constant temperature degree (i.e. design temperature) and design temperature deviation (i.e. preset temperature deviation), can obtain actual measurement return air temperature, return air is set
Relation between constant temperature degree and design temperature deviation.Under the heating mode, when actual measurement return air temperature is less than return air design temperature
During with the difference of design temperature deviation, cold can be switched and be incorporated into nearest cold combination more than former operation combination；When
When actual measurement return air temperature is more than the sum of return air design temperature and design temperature deviation, cold can be switched and be incorporated into less than former operation
The nearest cold combination of combination；When actual measurement return air temperature is in return air design temperature and the difference and return air of design temperature deviation
When between the sum of design temperature and design temperature deviation, maintain former combined running state constant.
For example, air-conditioner set operates in heating mode, and the combination that current cold combined value size is the H in table 1
It is worth size.Judge actual measurement return air temperature T realities and the deviation of design temperature T, there are following three kinds of situations：
(1)TIt is real＜ T-Δ P, then a nearest combination I operation of the system operation to cold combination more than H；
(2)TIt is real＞ T+ Δ P, then a nearest combination G operation of the system operation to cold combination less than H；
(3)T—ΔP≤TIt is real≤ T+ Δ P, then continue to former operating status.
It should be noted that cold combination is the combination of the start-stop situation of the compressor of air-conditioner set varying number.
Here, different cold combinations is described with different cold combined values.Return air temperature ripple can be ensured by this method
It is dynamic steady, without frequent change dramatically, users'comfort is lifted, and the combination of compressor cold can be adjusted rapidly to adapt to reality
Demand, the compressor start-stop during avoiding middle tone whole is frequent, lifts the reliability of unit.
The embodiment employs the steps：Determine the cold combination value set of fixed frequency air conditioner unit, wherein, cold group
Close multiple cold combined values that value set includes fixed frequency air conditioner unit inherently；Detect the current cold group of fixed frequency air conditioner unit
Conjunction value；Detect the return air temperature of fixed frequency air conditioner unit；Detect the operational mode of fixed frequency air conditioner unit；Judge whether return air temperature is big
In the first predetermined threshold value；If return air temperature is more than the first predetermined threshold value, and detects the operational mode of fixed frequency air conditioner unit
For refrigeration mode, then the cold combined value of fixed frequency air conditioner unit is adjusted into multiple cold combined values by current cold combined value
Closest and more than current cold combined value the cold combined value with current cold combined value, in fixed frequency air conditioner unit refrigeration mould
Under formula, by being adjusted the cold combined value of fixed frequency air conditioner unit into multiple cold combined values by current cold combined value with working as
Preceding cold combined value is closest and is more than the cold combined value of current cold combined value, has reached the mesh for adjusting cold combined value
, and the start-stop of unwanted cold combination compressor is effectively prevent, reach the effect of lifting unit service life.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
Performed in computer system, although also, show logical order in flow charts, in some cases, can be with not
The order being same as herein performs shown or described step.
According to an embodiment of the invention, there is provided a kind of cold grouped controls of fixed frequency air conditioner unit.Need to illustrate
, the cold grouped controls of the fixed frequency air conditioner unit of the embodiment of the present invention, which can be used for performing the embodiment of the present invention, to be carried
The cold combination control method of the fixed frequency air conditioner unit of confession, the cold combination controlling party of the fixed frequency air conditioner unit of the embodiment of the present invention
Method can also be performed by the cold grouped controls for the fixed frequency air conditioner unit that the embodiment of the present invention is provided.
Fig. 5 is the schematic diagram of the first embodiment of the cold grouped controls of fixed frequency air conditioner unit according to the present invention.
As shown in figure 5, the device includes：Determination unit 10, first detection unit 20, second detection unit 30, the first judging unit 40
With the first adjustment unit 50.
Determination unit 10, the cold for determining fixed frequency air conditioner unit combine value set, wherein, cold combination value set bag
Include the multiple cold combined values of fixed frequency air conditioner unit inherently.
First detection unit 20, for detecting the current cold combined value of fixed frequency air conditioner unit.
Second detection unit 30, for detecting the return air temperature of fixed frequency air conditioner unit.
First judging unit 40, for judging whether return air temperature is more than the first predetermined threshold value.
First adjustment unit 50, for when return air temperature is more than the first predetermined threshold value, by the cold of fixed frequency air conditioner unit
Combined value is adjusted by current cold combined value and combined into multiple cold combined values with the immediate cold of current cold combined value
Value.
The cold grouped controls of fixed frequency air conditioner unit provided in this embodiment include：Determination unit 10, first detects
Unit 20, second detection unit 30, the first judging unit 40 and the first adjustment unit 50.By the device, solve to determining frequency
Air-conditioner set carry out cold combination control when, high frequent start-stop influence the compressor service life the problem of, and then pass through first adjust
Unit 50 is saved when return air temperature is more than the first predetermined threshold value, the cold combined value of fixed frequency air conditioner unit is combined by current cold
Value is adjusted into multiple cold combined values with the immediate cold combined value of current cold combined value, effectively prevent unwanted
Cold combines the start-stop of compressor, has reached the effect of lifting unit service life.
Fig. 6 is the schematic diagram of the second embodiment of the cold grouped controls of fixed frequency air conditioner unit according to the present invention.
The embodiment can be as a kind of preferred embodiment of embodiment illustrated in fig. 5.As shown in fig. 6, the device includes：Determination unit
10th, first detection unit 20, second detection unit 30, the 3rd detection unit 60, the first judging unit 40 and the first adjustment unit
50.Wherein it is determined that phase shown in unit 10, first detection unit 20,30 and first judging unit 40 and Fig. 3 of second detection unit
Together, which is not described herein again.
3rd detection unit 60, for detecting the operational mode of fixed frequency air conditioner unit.
First adjustment unit 50, for when it is refrigeration mode to detect the operational mode of fixed frequency air conditioner unit, frequency will to be determined
The cold combined value of air-conditioner set is adjusted into multiple cold combined values with current cold combined value most by current cold combined value
Cold combined value close and more than current cold combined value.
Fig. 7 is the systematic schematic diagram of the cold grouped controls of fixed frequency air conditioner unit according to the present invention.Such as Fig. 7 institutes
Show, outdoor heat exchanger 01 by four-way valve 06, the first compressor 07, the second compressor 08 (other compressors can also be included,
Do not there is provided in figure), filter 03, throttle mechanism 04 be connected with indoor heat exchanger 05.An indoor fan is included in the system
02, by indoor fan to interior air-supply, to realize refrigeration A or heating B.From figure 7 it can be seen that by varying compressor
The combining form of (including the first compressor 07, second compressor 08 etc.) start-stop, can adjust the cold combined value of air-conditioner set,
And then realize the spatial load forecasting of air-conditioner set.Cold combined value is adjusted by using the first adjustment unit, it is fixed to make
The cold of frequency air-conditioner set itself output rapidly adapts to client's actual load demand, so that the use environment temperature fluctuation of client
Steadily, the comfort of environment is lifted；The process of unit itself adjustment output cold is also substantially reduced at the same time, and avoiding need not
Cold combination compressor start-stop, can largely lift the service life of unit.Combined and controlled using the cold
The fixed frequency air conditioner unit of device is in the regulating power for the convertible frequency air-conditioner unit that can match in excellence or beauty to a certain degree in scope, and input cost and change
Frequency air-conditioner set is compared to relatively low.
The cold grouped controls of fixed frequency air conditioner unit provided in this embodiment include：Determination unit 10, first detects
Unit 20, second detection unit 30, the 3rd detection unit 60, the first judging unit 40 and the first adjustment unit 50.The device exists
Under fixed frequency air conditioner unit refrigeration mode, by using the first adjustment unit 50 by the cold combined value of fixed frequency air conditioner unit by current
Cold combined value adjusts into multiple cold combined values closest with current cold combined value and is more than current cold combined value
Cold combined value, achieveed the purpose that to adjust cold combined value, and effectively prevent unwanted cold combination compressor
Start-stop, reached lifting unit service life effect.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention be not restricted to it is any specific
Hardware and software combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
- A kind of 1. cold combination control method of fixed frequency air conditioner unit, it is characterised in that including：Determine the cold combination value set of fixed frequency air conditioner unit, wherein, the cold combination value set includes the fixed frequency air conditioner The multiple cold combined values of unit inherently；Detect the current cold combined value of the fixed frequency air conditioner unit；Detect the return air temperature of the fixed frequency air conditioner unit；Judge whether the return air temperature is more than the first predetermined threshold value；AndIf the return air temperature is more than first predetermined threshold value, by the cold combined value of the fixed frequency air conditioner unit by institute Current cold combined value is stated to adjust into the multiple cold combined value and the immediate cold group of the current cold combined value Conjunction value,Wherein, before judging whether the return air temperature is more than first predetermined threshold value, the method further includes：Detection institute The operational mode of fixed frequency air conditioner unit is stated,The cold combined value of the fixed frequency air conditioner unit is adjusted to the multiple cold by the current cold combined value and is combined Include in value with the immediate cold combined value of the current cold combined value：If the operational mode for detecting the fixed frequency air conditioner unit is refrigeration mode, by the cold of the fixed frequency air conditioner unit Combined value is adjusted by the current cold combined value and most connect with the current cold combined value into the multiple cold combined value Cold combined value near and more than the current cold combined value；If the operational mode for detecting the fixed frequency air conditioner unit is heating mode, by the cold of the fixed frequency air conditioner unit Combined value is adjusted by the current cold combined value and most connect with the current cold combined value into the multiple cold combined value Cold combined value near and less than the current cold combined value,Wherein, if it is judged that the return air temperature is not more than first predetermined threshold value, and the fixed frequency air conditioner is detected The operational mode of unit is heating mode, and the method further includes：Judge whether the return air temperature is less than the second predetermined threshold value, wherein, it is pre- that second predetermined threshold value is less than described first If threshold value；If the return air temperature is less than second predetermined threshold value, by the cold combined value of the fixed frequency air conditioner unit by institute State current cold combined value adjust into the multiple cold combined value it is immediate and big with the current cold combined value In the cold combined value of the current cold combined value；AndIf the return air temperature is not less than second predetermined threshold value, the cold combined value of the fixed frequency air conditioner unit is maintained It is constant.
- 2. according to the method described in claim 1, it is characterized in that, if it is judged that the return air temperature is not more than described first Predetermined threshold value, and detect that the operational mode of the fixed frequency air conditioner unit is refrigeration mode, the method further includes：Judge whether the return air temperature is less than the second predetermined threshold value, wherein, it is pre- that second predetermined threshold value is less than described first If threshold value；If the return air temperature is less than second predetermined threshold value, by the cold combined value of the fixed frequency air conditioner unit by institute Current cold combined value is stated to adjust into the multiple cold combined value closest with the current cold combined value and be less than The cold combined value of the current cold combined value；AndIf the return air temperature is not less than second predetermined threshold value, the cold combined value of the fixed frequency air conditioner unit is maintained It is constant.
- 3. according to claim 1 or claim 2, it is characterised in that determine the described first default threshold by the following method Value：Obtain the design temperature of the fixed frequency air conditioner unit；Determine preset temperature deviation；Calculate the sum of the design temperature of the fixed frequency air conditioner unit and described preset temperature deviation；AndUsing the sum of the design temperature of the fixed frequency air conditioner unit and the preset temperature deviation as first predetermined threshold value.
- 4. according to the method described in claim 3, it is characterized in that, second predetermined threshold value is determined by the following method：Calculate the design temperature of the fixed frequency air conditioner unit and the difference of the preset temperature deviation；AndUsing the difference of the design temperature of the fixed frequency air conditioner unit and the preset temperature deviation as second predetermined threshold value.
- A kind of 5. cold grouped controls of fixed frequency air conditioner unit, it is characterised in that including：Determination unit, the cold for determining fixed frequency air conditioner unit combine value set, wherein, the cold combination value set includes The multiple cold combined values of the fixed frequency air conditioner unit inherently；First detection unit, for detecting the current cold combined value of the fixed frequency air conditioner unit；Second detection unit, for detecting the return air temperature of the fixed frequency air conditioner unit；First judging unit, for judging whether the return air temperature is more than the first predetermined threshold value；AndFirst adjustment unit, for when the return air temperature is more than first predetermined threshold value, by the fixed frequency air conditioner unit Cold combined value adjusted by the current cold combined value and combined into the multiple cold combined value with the current cold It is worth immediate cold combined value,Wherein, described device further includes：3rd detection unit, for detecting the operational mode of the fixed frequency air conditioner unit,First adjustment unit, for when it is refrigeration mode to detect the operational mode of the fixed frequency air conditioner unit, by institute The cold combined value for stating fixed frequency air conditioner unit is adjusted into the multiple cold combined value and institute by the current cold combined value State current cold combined value closest to and more than the current cold combined value cold combined value.
- 6. device according to claim 5, it is characterised in that if the first judging unit judges the return air temperature not More than first predetermined threshold value, and the 3rd detection unit detects that the operational mode of the fixed frequency air conditioner unit is refrigeration mould Formula, described device further include：Second judging unit, for judging whether the return air temperature is less than the second predetermined threshold value, wherein, the described second default threshold Value is less than first predetermined threshold value；Second adjustment unit, for when the return air temperature is less than second predetermined threshold value, by the fixed frequency air conditioner unit Cold combined value adjusted by the current cold combined value and combined into the multiple cold combined value with the current cold Value is closest and is less than the cold combined value of the current cold combined value；AndMaintenance unit, for when the return air temperature is not less than second predetermined threshold value, maintaining the fixed frequency air conditioner unit Cold combined value it is constant.
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| CN201410811971.4A CN104566800B (en) | 2014-12-19 | 2014-12-19 | Cold quantity combination control method and device for fixed-frequency air conditioning unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410811971.4A CN104566800B (en) | 2014-12-19 | 2014-12-19 | Cold quantity combination control method and device for fixed-frequency air conditioning unit |
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| CN104566800B true CN104566800B (en) | 2018-04-17 |
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| CN101846413A (en) * | 2010-05-26 | 2010-09-29 | 南车株洲电力机车有限公司 | Unitary air-conditioning unit of subway vehicle and control method thereof |
| CN102121731A (en) * | 2011-04-07 | 2011-07-13 | 浙江理工大学 | Dual-temperature-heat-pipe constant-temperature and constant-humidity air-conditioning unit |
| CN102192570A (en) * | 2010-03-19 | 2011-09-21 | 中海集装箱运输股份有限公司 | Temperature control method for temperature control unit |
| CN103175283A (en) * | 2011-12-21 | 2013-06-26 | 珠海格力电器股份有限公司 | Control method and device for operation mode of air conditioner and air conditioner |
| CN103423964A (en) * | 2013-09-06 | 2013-12-04 | 合肥美的电冰箱有限公司 | Refrigerator and load control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3322684B2 (en) * | 1992-03-16 | 2002-09-09 | 東芝キヤリア株式会社 | Air conditioner |
| JP4436356B2 (en) * | 2006-12-25 | 2010-03-24 | 三星電子株式会社 | Air conditioner |
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2014
- 2014-12-19 CN CN201410811971.4A patent/CN104566800B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192570A (en) * | 2010-03-19 | 2011-09-21 | 中海集装箱运输股份有限公司 | Temperature control method for temperature control unit |
| CN101846413A (en) * | 2010-05-26 | 2010-09-29 | 南车株洲电力机车有限公司 | Unitary air-conditioning unit of subway vehicle and control method thereof |
| CN102121731A (en) * | 2011-04-07 | 2011-07-13 | 浙江理工大学 | Dual-temperature-heat-pipe constant-temperature and constant-humidity air-conditioning unit |
| CN103175283A (en) * | 2011-12-21 | 2013-06-26 | 珠海格力电器股份有限公司 | Control method and device for operation mode of air conditioner and air conditioner |
| CN103423964A (en) * | 2013-09-06 | 2013-12-04 | 合肥美的电冰箱有限公司 | Refrigerator and load control method thereof |
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