CN105042787A - Method and system for controlling compressor in air-cooled heat pump water chilling and heating machine - Google Patents
Method and system for controlling compressor in air-cooled heat pump water chilling and heating machine Download PDFInfo
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- CN105042787A CN105042787A CN201510477479.2A CN201510477479A CN105042787A CN 105042787 A CN105042787 A CN 105042787A CN 201510477479 A CN201510477479 A CN 201510477479A CN 105042787 A CN105042787 A CN 105042787A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method and system for controlling a compressor in an air-cooled heat pump water chilling and heating machine. The control method comprises the following steps of detecting a current environment temperature and obtaining a curve of compressor capacity output percentage variation with temperature according to the current environment temperature and a set temperature; detecting an outlet water temperature of the air-cooled heat pump water chilling and heating machine or a return water temperature of the air-cooled heat pump water chilling and heating machine in real time; obtaining the capacity output percentage of the compressor according to the outlet water temperature/return water temperature and the curve of compressor capacity output percentage variation with temperature and obtaining current energy demand of the compressor according to the capacity output percentage; and controlling the compressor according to the current energy demand of the compressor. According to the control method, the continuous stable output of the compressor frequency can be achieved and the energy demand of the compressor is adjusted accurately in real time, and accordingly the goals of energy saving and environmental protection are achieved.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly relate to the control system of compressor in the control method of compressor in a kind of air-cooled heat pump cold-hot water machine and a kind of air-cooled heat pump cold-hot water machine.
Background technology
Along with the raising of people's living standard, the sharply consumption of society to the energy, and environmental problem is day by day serious, makes the utilization rate of environmental energy more and more receive the concern of society.
In air-conditioner industry, converter technique improves the most effective technology of energy utilization rate present stage.For an air-conditioner, compressor is the main body of energy resource consumption in complete machine, and therefore frequency-changeable compressor control technology is the key of complete machine air conditioning energy-saving environmental protection efficiently.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the control method proposing compressor in a kind of air-cooled heat pump cold-hot water machine, percentage can be exported by the ability of leaving water temperature/return water temperature and compressor to vary with temperature curve and need to carry out in real time the energy of compressor and to regulate accurately, thus realize the object of energy-conserving and environment-protective.
Another object of the present invention is the control system proposing compressor in a kind of air-cooled heat pump cold-hot water machine.
For achieving the above object, one aspect of the present invention embodiment proposes the control method of compressor in a kind of air-cooled heat pump cold-hot water machine, comprise the following steps: detect current environmental temperature, and according to described current environmental temperature and design temperature obtain described compressor ability export percentage vary with temperature curve; The leaving water temperature of real-time detection described air-cooled heat pump cold-hot water machine or the return water temperature of described air-cooled heat pump cold-hot water machine; Ability according to described leaving water temperature/return water temperature and described compressor exports the ability output percentage that percentage varies with temperature compressor described in curve acquisition, and exports according to described ability the current energy need that percentage obtains described compressor; And need control described compressor according to the current energy of described compressor.
According to the control method of compressor in the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, detect current environmental temperature, and vary with temperature curve according to the ability output percentage of current environmental temperature and design temperature acquisition compressor, the real-time leaving water temperature of detection air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine, ability according to leaving water temperature/return water temperature and compressor exports the ability output percentage that percentage varies with temperature curve acquisition compressor, and export according to ability the current energy need that percentage obtains compressor, and need control compressor according to the current energy of compressor, thus realize need carrying out in real time the energy of compressor and regulating accurately, reach the object of energy-conserving and environment-protective.
According to one embodiment of present invention, when carrying out energy to described compressor and need tuning up control, wherein, if described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, then export according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, the current of described compressor can be required to be rounding of N*X%, and N is that the total energy of described compressor needs; If described leaving water temperature/return water temperature is greater than described first preset temperature T
s+dand be less than the second preset temperature T
smax, then the ability output percentage obtaining described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%; If described leaving water temperature/return water temperature is more than or equal to described second preset temperature T
smax, then the current of described compressor can be required to be N.
According to one embodiment of present invention, when carrying out energy to described compressor and need turning control down, wherein, if described leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of described compressor can be required to be N, and N is that the total energy of described compressor needs; If described leaving water temperature/return water temperature is less than described 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, then the ability output percentage obtaining described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%; If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to described first preset temperature T
s+d, then export according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, the current of described compressor can be required to be rounding of N*X%; If described leaving water temperature/return water temperature is less than described default start-up temperature T
s-dand be greater than default shutdown temperature T
off, then the ability output percentage obtaining described compressor is default minimum output percentage b%, and the current of described compressor can be required to be rounding of N*b%, b < a.
Wherein, when described leaving water temperature/return water temperature is less than or equal to described default shutdown temperature T
offtime, control described compressor and close.
In some embodiments of the invention, by round to obtain described compressor current can take only to enter do not give up.
For achieving the above object, the present invention on the other hand embodiment proposes the control system of compressor in a kind of air-cooled heat pump cold-hot water machine, comprising: the first temperature detecting module, for detecting current environmental temperature; Second temperature detecting module, for the return water temperature of the leaving water temperature or described air-cooled heat pump cold-hot water machine that detect described air-cooled heat pump cold-hot water machine in real time; Control module, ability for obtaining described compressor according to described current environmental temperature and design temperature exports percentage and varies with temperature curve, and export according to the ability of described leaving water temperature/return water temperature and described compressor the ability output percentage that percentage varies with temperature compressor described in curve acquisition, and export according to described ability the current energy need that percentage obtains described compressor, and need control described compressor according to the current energy of described compressor.
According to the control system of compressor in the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, current environmental temperature is detected by the first temperature detecting module, and detect the leaving water temperature of air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine in real time by the second temperature detecting module, the ability output percentage that control module obtains compressor according to current environmental temperature and design temperature varies with temperature curve, and export according to the ability of leaving water temperature/return water temperature and compressor the ability output percentage that percentage varies with temperature curve acquisition compressor, and export according to ability the current energy need that percentage obtains compressor, and need control compressor according to the current energy of compressor, thus realize need carrying out in real time the energy of compressor and regulating accurately, reach the object of energy-conserving and environment-protective.
According to one embodiment of present invention, when carrying out energy to described compressor and need tuning up control, wherein, if described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, described control module then exports according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, and the current of described compressor can be required to be rounding of N*X%, and N is that the total energy of described compressor needs; If described leaving water temperature/return water temperature is greater than described first preset temperature T
s+dand be less than the second preset temperature T
smax, the ability output percentage that described control module then obtains described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%; If described leaving water temperature/return water temperature is more than or equal to described second preset temperature T
smax, then the current of described compressor can be required to be N.
According to one embodiment of present invention, when carrying out energy to described compressor and need turning control down, wherein, if described leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of described compressor can be required to be N, and N is that the total energy of described compressor needs; If described leaving water temperature/return water temperature is less than described 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, the ability output percentage that described control module then obtains described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%; If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to described first preset temperature T
s+d, described control module then exports according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, and the current of described compressor can be required to be rounding of N*X%; If described leaving water temperature/return water temperature is less than described default start-up temperature T
s-dand be greater than default shutdown temperature T
off, the ability output percentage that described control module then obtains described compressor is default minimum output percentage b%, and the current of described compressor can be required to be rounding of N*b%, b < a.
Wherein, when described leaving water temperature/return water temperature is less than or equal to described default shutdown temperature T
offtime, described control module controls described compressor and closes.
In some embodiments of the invention, by round to obtain described compressor current can take only to enter do not give up.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of compressor in the air-cooled heat pump cold-hot water machine according to the embodiment of the present invention.
Fig. 2 is that the ability output percentage of compressor according to an embodiment of the invention varies with temperature curve map.
Fig. 3 is the block diagram of the control system of compressor in the air-cooled heat pump cold-hot water machine according to the embodiment of the present invention.
Reference numeral: the first temperature detecting module 10, second temperature detecting module 20 and control module 30.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The control system of compressor in the control method of compressor in the air-cooled heat pump cold-hot water machine that the embodiment of the present invention proposes and air-cooled heat pump cold-hot water machine is described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the control method of compressor in the air-cooled heat pump cold-hot water machine according to the embodiment of the present invention.As shown in Figure 1, in this air-cooled heat pump cold-hot water machine, the control method of compressor comprises the following steps:
S1, detects current environmental temperature, and varies with temperature curve according to the ability output percentage of current environmental temperature and design temperature acquisition compressor.
According to a concrete example of the present invention, the ability of compressor exports percentage and varies with temperature curve as shown in Figure 2, wherein, and T
offfor shutdown temperature, T
s-dfor start-up temperature, T
sfor design temperature, T
s+dbe the first preset temperature, T
sfbe the 3rd preset temperature, T
smaxbe the second preset temperature, and, shutdown temperature T
offwith start-up temperature T
s-dbetween temperature gap T
offsetfor shutting down return difference temperature, start-up temperature T
s-dwith the first preset temperature T
s+dbetween temperature gap T
2dfor temperature controlling range, the first preset temperature T
s+dwith the 3rd preset temperature T
sfbetween temperature gap t
1be between the first active region, the 3rd preset temperature T
sfwith the second preset temperature T
smaxbetween temperature gap t
2be between the second active region, a% is maximum output percentage, and b% is minimum output percentage, and the ability of Ps corresponding to design temperature Ts exports percentage.
S2, detects the leaving water temperature of air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine in real time.
S3, the ability according to leaving water temperature/return water temperature and compressor exports the ability output percentage that percentage varies with temperature curve acquisition compressor, and exports according to ability the current energy need that percentage obtains compressor.
S4, the current energy according to compressor need control compressor.
According to one embodiment of present invention, when carrying out energy to compressor and need tuning up control, wherein, if leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, then export according to ability the ability output percentage X% that percentage varies with temperature curve acquisition compressor, the current of compressor can be required to be rounding of N*X%, and N is that the total energy of compressor needs; If leaving water temperature/return water temperature is greater than the first preset temperature T
s+dand be less than the second preset temperature T
smax, then the ability output percentage obtaining compressor is default maximum output percentage a%, and the current of compressor can be required to be rounding of N*a%; If leaving water temperature/return water temperature is more than or equal to the second preset temperature T
smax, then the current of compressor can be required to be N.
According to one embodiment of present invention, when carrying out energy to compressor and need turning control down, wherein, if leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of compressor can be required to be N, and N is that the total energy of compressor needs; If leaving water temperature/return water temperature is less than the 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, then the ability output percentage obtaining compressor is default maximum output percentage a%, and the current of compressor can be required to be rounding of N*a%; If leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, then export according to ability the ability output percentage X% that percentage varies with temperature curve acquisition compressor, the current of compressor can be required to be rounding of N*X%; If leaving water temperature/return water temperature is less than default start-up temperature T
s-dand be greater than default shutdown temperature T
off, then the ability output percentage obtaining compressor is default minimum output percentage b%, and the current of compressor can be required to be rounding of N*b%, b < a.Further, when leaving water temperature/return water temperature is less than or equal to default shutdown temperature T
offtime, control compressor and close.
In some embodiments of the invention, by round to obtain compressor current can take only to enter do not give up.
Particularly, if design temperature is T
s, the current environmental temperature of detection is T
h, be then T according to design temperature
swith current environmental temperature T
hselect t between suitable difference d, the first active region
1, t between the second active region
2, maximum output percentage a% and minimum output percentage b%, and according to difference d and design temperature T
sdetermine start-up temperature T
s-d, shut down return difference temperature T
offsetwith temperature controlling range T
2d, as shown in table 1.
Table 1
| Title | Default value | Scope is set |
| Start-up temperature T S-d | 7 | 0-15 |
| Shut down return difference temperature T offset | 2 | 2-5 |
| Temperature controlling range T 2d | 3 | 2-5 |
| T between the first active region 1 | 1 | 1-3 |
| T between the second active region 2 | 1 | 1-3 |
| Minimum output percentage b% | 20％ | 10％-30％ |
| Maximum output percentage a% | 80％ | 70％-90％ |
That is, if according to design temperature T
swith current environmental temperature T
hthe difference d=1.5 selected, t between the first active region
1t between the=1, second active region
2=1, maximum output percentage a%=80% and minimum output percentage b%=20%, then can determine shutdown temperature T
off=5, start-up temperature T
s-d=7, first preset temperature T
s+d=10, the 3rd preset temperature T
sf=11 and the second preset temperature T
smax=12, thus the ability output percentage obtaining the compressor shown in Fig. 2 varies with temperature curve.
The real-time leaving water temperature of detection air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine, if current leaving water temperature/return water temperature is less than start-up temperature T
s-d, then control compressor and be in closed condition, namely control compressor and do not start output; If current leaving water temperature/return water temperature is more than or equal to start-up temperature T
s-d, then control compressor start and export.Thus startup control can be carried out to compressor according to actual needs, avoid meaningless startup and cause electric quantity loss.
In the process controlling compressor start output, its control logic follows A → B → C → D → E → F → C → B → A → G → H → I, wherein, being that compressor carries out can the control procedure that need tune up by A → B → C → D → E, is the control procedure that compressor carries out need turning down by E → F → C → B → A → G → H → I.
Specifically, suppose that current leaving water temperature/return water temperature is T
0, then carry out in the control procedure that can need tune up at compressor: as start-up temperature T
s-d≤ T
0≤ the first preset temperature T
s+dtime, it is X% that the ability of compressor exports percentage, and the current of compressor can be required to be rounding of N*X%; As the first preset temperature T
s+d< T
0< second preset temperature T
smaxtime, it is maximum output percentage a% that the ability of compressor exports percentage, and the current of compressor can be required to be rounding of N*a%; As the second preset temperature T
smax≤ T
0time, control the current of compressor and can be required to be N, namely the ability of compressor exports is 100%.Carry out in the control procedure that can need turn down at compressor: as the 3rd preset temperature T
sf≤ T
0≤ the second preset temperature T
smaxtime, control the current of compressor and can be required to be N, namely the ability of compressor exports is 100%; As the first preset temperature T
s+d< T
0< the 3rd preset temperature T
sftime, it is maximum output percentage a% that the ability of compressor exports percentage, and the current of compressor can be required to be rounding of N*a%; As start-up temperature T
s-d≤ T
0≤ the first preset temperature T
s+dtime, it is X% that the ability of compressor exports percentage, and the current of compressor can be required to be rounding of N*X%; As shutdown temperature T
off< T
0< start-up temperature T
s-dtime, it is minimum output percentage b% that the ability of compressor exports percentage, and the current of compressor can be required to be rounding of N*b%.And work as T
0≤ shutdown temperature T
offtime, control compressor and close.
It should be noted that, when the ability output percentage of compressor is X%, the current of compressor can be required to be rounding of N*X%, and the refrigeration of its correspondence can need as shown in table 2.
Table 2
Table 2 gives the running frequency that same horsepower (power) the i.e. frequency-changeable compressor of different model is not corresponding when current energy needs different, by the current control that can need to compressor, the continous-stable achieving compressor operating frequency exports, wherein, S1, S2 and S3 represent a number of compressor, INV1 represents frequency-changeable compressor, and refrigeration can need the running frequency of corresponding compressor.
To sum up, by embodiments of the invention, the continous-stable that can realize compressor operating frequency exports, and need carry out in real time and regulate accurately, reach the object of energy-conserving and environment-protective to the energy of compressor.
According to the control method of compressor in the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, detect current environmental temperature, and vary with temperature curve according to the ability output percentage of current environmental temperature and design temperature acquisition compressor, the real-time leaving water temperature of detection air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine, ability according to leaving water temperature/return water temperature and compressor exports the ability output percentage that percentage varies with temperature curve acquisition compressor, and export according to ability the current energy need that percentage obtains compressor, and need control compressor according to the current energy of compressor, thus realize need carrying out in real time the energy of compressor and regulating accurately, reach the object of energy-conserving and environment-protective.
Fig. 3 is the block diagram of the control system of compressor in the air-cooled heat pump cold-hot water machine according to the embodiment of the present invention.As shown in Figure 3, in this air-cooled heat pump cold-hot water machine, the control system of compressor comprises: the first temperature detecting module 10, second temperature detecting module 20 and control module 30.
Wherein, first temperature detecting module 10 is for detecting current environmental temperature, second temperature detecting module 20 is for the return water temperature of the leaving water temperature or air-cooled heat pump cold-hot water machine that detect air-cooled heat pump cold-hot water machine in real time, control module 30 exports percentage for the ability obtaining compressor according to current environmental temperature and design temperature and varies with temperature curve, and export according to the ability of leaving water temperature/return water temperature and compressor the ability output percentage that percentage varies with temperature curve acquisition compressor, and export according to ability the current energy need that percentage obtains compressor, and need control compressor according to the current energy of compressor.
According to a concrete example of the present invention, the ability of compressor exports percentage and varies with temperature curve as shown in Figure 2, wherein, and T
offfor shutdown temperature, T
s-dfor start-up temperature, T
sfor design temperature, T
s+dbe the first preset temperature, T
sfbe the 3rd preset temperature, T
smaxbe the second preset temperature, and, shutdown temperature T
offwith start-up temperature T
s-dbetween temperature gap T
offsetfor shutting down return difference temperature, start-up temperature T
s-dwith the first preset temperature T
s+dbetween temperature gap T
2dfor temperature controlling range, the first preset temperature T
s+dwith the 3rd preset temperature T
sfbetween temperature gap t
1be between the first active region, the 3rd preset temperature T
sfwith the second preset temperature T
smaxbetween temperature gap t
2be between the second active region, a% is maximum output percentage, and b% is minimum output percentage, and the ability of Ps corresponding to design temperature Ts exports percentage.
According to one embodiment of present invention, when carrying out energy to compressor and need tuning up control, wherein, if leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, control module 30 exports according to ability the ability output percentage X% that percentage varies with temperature curve acquisition compressor, and the current of compressor can be required to be rounding of N*X%, and N is that the total energy of compressor needs; If leaving water temperature/return water temperature is greater than the first preset temperature T
s+dand be less than the second preset temperature T
smax, it is default maximum output percentage a% that the ability of control module 30 acquisition compressors exports percentage, and the current of compressor can be required to be rounding of N*a%; If leaving water temperature/return water temperature is more than or equal to the second preset temperature T
smax, then the current of compressor can be required to be N.
According to one embodiment of present invention, when carrying out energy to compressor and need turning control down, wherein, if leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of compressor can be required to be N, and N is that the total energy of compressor needs; If leaving water temperature/return water temperature is less than the 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, it is default maximum output percentage a% that the ability of control module 30 acquisition compressors exports percentage, and the current of compressor can be required to be rounding of N*a%; If leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, control module 30 exports according to ability the ability output percentage X% that percentage varies with temperature curve acquisition compressor, and the current of compressor can be required to be rounding of N*X%; If leaving water temperature/return water temperature is less than default start-up temperature T
s-dand be greater than default shutdown temperature T
off, it is default minimum output percentage b% that the ability of control module 30 acquisition compressors exports percentage, and the current of compressor can be required to be rounding of N*b%, b < a.Further, when leaving water temperature/return water temperature is less than or equal to default shutdown temperature T
offtime, control module 30 controls compressor and closes.
In some embodiments of the invention, by round to obtain compressor current can take only to enter do not give up.
Particularly, if design temperature is T
s, the current environmental temperature that the first temperature detecting module 10 detects is T
h, then control module 30 is T according to design temperature
swith current environmental temperature T
hselect t between suitable difference d, the first active region
1, t between the second active region
2, maximum output percentage a% and minimum output percentage b%, and according to difference d and design temperature T
sdetermine start-up temperature T
s-d, shut down return difference temperature T
offsetwith temperature controlling range T
2d, as shown in Table 1 above.
That is, if control module 30 is according to design temperature T
swith current environmental temperature T
hthe difference d=1.5 selected, t between the first active region
1t between the=1, second active region
2=1, maximum output percentage a%=80% and minimum output percentage b%=20%, then control module 30 can determine shutdown temperature T
off=5, start-up temperature T
s-d=7, first preset temperature T
s+d=10, the 3rd preset temperature T
sf=11 and the second preset temperature T
smax=12, thus the ability output percentage obtaining the compressor shown in Fig. 2 varies with temperature curve.
Second temperature detecting module 20 detects the leaving water temperature of air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine in real time, if current leaving water temperature/return water temperature is less than start-up temperature T
s-d, then control module 30 controls compressor and is in closed condition, namely controls compressor and does not start output; If current leaving water temperature/return water temperature is more than or equal to start-up temperature T
s-d, then control module 30 controls compressor start output.Thus startup control can be carried out to compressor according to actual needs, avoid meaningless startup and cause electric quantity loss.
Control module 30 is in the process controlling compressor start output, its control logic follows A → B → C → D → E → F → C → B → A → G → H → I, wherein, being that compressor carries out can the control procedure that need tune up by A → B → C → D → E, is the control procedure that compressor carries out need turning down by E → F → C → B → A → G → H → I.
Specifically, suppose that current leaving water temperature/return water temperature is T
0, then carry out in the control procedure that can need tune up at compressor: as start-up temperature T
s-d≤ T
0≤ the first preset temperature T
s+dtime, the ability output percentage that control module 30 obtains compressor is X%, and the current of compressor can be required to be rounding of N*X%; As the first preset temperature T
s+d< T
0< second preset temperature T
smaxtime, the ability output percentage that control module 30 obtains compressor is maximum output percentage a%, and the current of compressor can be required to be rounding of N*a%; As the second preset temperature T
smax≤ T
0time, control module 30 controls the current of compressor can be required to be N, and namely the ability of compressor exports is 100%.Carry out in the control procedure that can need turn down at compressor: as the 3rd preset temperature T
sf≤ T
0≤ the second preset temperature T
smaxtime, control module 30 controls the current of compressor can be required to be N, and namely the ability of compressor exports is 100%; As the first preset temperature T
s+d< T
0< the 3rd preset temperature T
sftime, the ability output percentage that control module 30 obtains compressor is maximum output percentage a%, and the current of compressor can be required to be rounding of N*a%; As start-up temperature T
s-d≤ T
0≤ the first preset temperature T
s+dtime, the ability output percentage that control module 30 obtains compressor is X%, and the current of compressor can be required to be rounding of N*X%; As shutdown temperature T
off< T
0< start-up temperature T
s-dtime, the ability output percentage that control module 30 obtains compressor is minimum output percentage b%, and the current of compressor can be required to be rounding of N*b%.And work as T
0≤ shutdown temperature T
offtime, control module 30 controls compressor and closes.
It should be noted that, when the ability output percentage of compressor is X%, the current of compressor can be required to be rounding of N*X%, and the refrigeration of its correspondence can need as shown in Table 2 above.
To sum up, by embodiments of the invention, the continous-stable that can realize compressor operating frequency exports, and need carry out in real time and regulate accurately, reach the object of energy-conserving and environment-protective to the energy of compressor.
According to the control system of compressor in the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, current environmental temperature is detected by the first temperature detecting module, and detect the leaving water temperature of air-cooled heat pump cold-hot water machine or the return water temperature of air-cooled heat pump cold-hot water machine in real time by the second temperature detecting module, the ability output percentage that control module obtains compressor according to current environmental temperature and design temperature varies with temperature curve, and export according to the ability of leaving water temperature/return water temperature and compressor the ability output percentage that percentage varies with temperature curve acquisition compressor, and export according to ability the current energy need that percentage obtains compressor, and need control compressor according to the current energy of compressor, thus realize need carrying out in real time the energy of compressor and regulating accurately, reach the object of energy-conserving and environment-protective.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. the control method of compressor in air-cooled heat pump cold-hot water machine, is characterized in that, comprise the following steps:
Detect current environmental temperature, and according to described current environmental temperature and design temperature obtain described compressor ability export percentage vary with temperature curve;
The leaving water temperature of real-time detection described air-cooled heat pump cold-hot water machine or the return water temperature of described air-cooled heat pump cold-hot water machine;
Ability according to described leaving water temperature/return water temperature and described compressor exports the ability output percentage that percentage varies with temperature compressor described in curve acquisition, and exports according to described ability the current energy need that percentage obtains described compressor; And
Current energy according to described compressor need control described compressor.
2. the control method of compressor in air-cooled heat pump cold-hot water machine according to claim 1, is characterized in that, when carrying out energy to described compressor and need tuning up control, wherein,
If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, then export according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, the current of described compressor can be required to be rounding of N*X%, and N is that the total energy of described compressor needs;
If described leaving water temperature/return water temperature is greater than described first preset temperature T
s+dand be less than the second preset temperature T
smax, then the ability output percentage obtaining described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%;
If described leaving water temperature/return water temperature is more than or equal to described second preset temperature T
smax, then the current of described compressor can be required to be N.
3. the control method of compressor in air-cooled heat pump cold-hot water machine according to claim 1, is characterized in that, when carrying out energy to described compressor and need turning control down, wherein,
If described leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of described compressor can be required to be N, and N is that the total energy of described compressor needs;
If described leaving water temperature/return water temperature is less than described 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, then the ability output percentage obtaining described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%;
If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to described first preset temperature T
s+d, then export according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, the current of described compressor can be required to be rounding of N*X%;
If described leaving water temperature/return water temperature is less than described default start-up temperature T
s-dand be greater than default shutdown temperature T
off, then the ability output percentage obtaining described compressor is default minimum output percentage b%, and the current of described compressor can be required to be rounding of N*b%, b < a.
4. the control method of compressor in air-cooled heat pump cold-hot water machine according to claim 3, is characterized in that, when described leaving water temperature/return water temperature is less than or equal to described default shutdown temperature T
offtime, control described compressor and close.
5. the air-cooled heat pump cold-hot water machine system according to Claims 2 or 3 add Unloading Control method, it is characterized in that, by round to obtain described compressor current can take only to enter do not give up.
6. the control system of compressor in air-cooled heat pump cold-hot water machine, is characterized in that, comprising:
First temperature detecting module, for detecting current environmental temperature;
Second temperature detecting module, for the return water temperature of the leaving water temperature or described air-cooled heat pump cold-hot water machine that detect described air-cooled heat pump cold-hot water machine in real time;
Control module, ability for obtaining described compressor according to described current environmental temperature and design temperature exports percentage and varies with temperature curve, and export according to the ability of described leaving water temperature/return water temperature and described compressor the ability output percentage that percentage varies with temperature compressor described in curve acquisition, and export according to described ability the current energy need that percentage obtains described compressor, and need control described compressor according to the current energy of described compressor.
7. the control system of compressor in air-cooled heat pump cold-hot water machine according to claim 6, is characterized in that, when carrying out energy to described compressor and need tuning up control, wherein,
If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to the first preset temperature T
s+d, described control module then exports according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, and the current of described compressor can be required to be rounding of N*X%, and N is that the total energy of described compressor needs;
If described leaving water temperature/return water temperature is greater than described first preset temperature T
s+dand be less than the second preset temperature T
smax, the ability output percentage that described control module then obtains described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%;
If described leaving water temperature/return water temperature is more than or equal to described second preset temperature T
smax, then the current of described compressor can be required to be N.
8. the control system of compressor in air-cooled heat pump cold-hot water machine according to claim 6, is characterized in that, when carrying out energy to described compressor and need turning control down, wherein,
If described leaving water temperature/return water temperature is less than or equal to the second preset temperature T
smaxand be more than or equal to the 3rd preset temperature T
sf, then the current of described compressor can be required to be N, and N is that the total energy of described compressor needs;
If described leaving water temperature/return water temperature is less than described 3rd preset temperature T
sfand be greater than the first preset temperature T
s+d, the ability output percentage that described control module then obtains described compressor is default maximum output percentage a%, and the current of described compressor can be required to be rounding of N*a%;
If described leaving water temperature/return water temperature is more than or equal to default start-up temperature T
s-dand be less than or equal to described first preset temperature T
s+d, described control module then exports according to described ability the ability output percentage X% that percentage varies with temperature compressor described in curve acquisition, and the current of described compressor can be required to be rounding of N*X%;
If described leaving water temperature/return water temperature is less than described default start-up temperature T
s-dand be greater than default shutdown temperature T
off, the ability output percentage that described control module then obtains described compressor is default minimum output percentage b%, and the current of described compressor can be required to be rounding of N*b%, b < a.
9. the control system of compressor in air-cooled heat pump cold-hot water machine according to claim 8, is characterized in that, when described leaving water temperature/return water temperature is less than or equal to described default shutdown temperature T
offtime, described control module controls described compressor and closes.
10. in the air-cooled heat pump cold-hot water machine according to claim 7 or 8, the control system of compressor, is characterized in that, by round to obtain described compressor current can take only to enter do not give up.
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