CN109458776A - Condensing unit operation control method and device and refrigeration equipment with same - Google Patents
Condensing unit operation control method and device and refrigeration equipment with same Download PDFInfo
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- CN109458776A CN109458776A CN201811309161.3A CN201811309161A CN109458776A CN 109458776 A CN109458776 A CN 109458776A CN 201811309161 A CN201811309161 A CN 201811309161A CN 109458776 A CN109458776 A CN 109458776A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 238000010977 unit operation Methods 0.000 title description 3
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims description 290
- 230000005494 condensation Effects 0.000 claims description 290
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a method and a device for controlling the operation of a condensing unit and refrigeration equipment with the device. The method comprises the following steps: a pressure ratio detection step, which is used for detecting the pressure ratio of the condensing unit, wherein the pressure ratio of the condensing unit is the ratio of the pressure of an exhaust port of a compressor of the condensing unit to the pressure of an air suction port of the compressor of the condensing unit; and a frequency adjusting step, which is used for adjusting the working frequency of the condensing fan according to the detected pressure ratio change of the condensing unit so as to enable the working frequency of the condensing fan to be adaptive to the detected pressure ratio of the condensing unit. The technical scheme of the invention ensures that the condensing fan is not frequently started and stopped, the system pressure is in a stable state, and the reliability of the whole machine is ensured; the operation mode of the condensing fan can be switched according to the use requirement, and the operation mode is switched to the energy-saving operation mode in the transportation process, so that the energy and the electricity are saved, and the temperature is rapidly reduced to the required temperature; when unloading at the destination, the low-noise operation mode is switched to, the required temperature is maintained, the noise is reduced, and the practicability and the reliability of the unit are improved.
Description
Technical field
The present invention relates to refrigeration technology field more particularly to a kind of condensation unit progress control method, device and there is this
The refrigeration equipment of device.
Background technique
The frequency of blower and condensing pressure are generally divided into several sections by condensation unit operation control in the prior art from high to low,
Using one-to-one relationship, when condensing pressure is in some section, condensation fan is just according to the corresponding wind of this section of condensing pressure
Unit frequency operating.Such as current refrigerator car condensation fan control mode processing in the market is as follows: in unit running process: when
When Tc >=Tcmax, condensation fan operation；As Tc < Tcmin, condensation fan stops；As Tcmin≤Tc < Tcmax, condensation fan
Gear maintains the original state；If back pressure transducer failure occurs in unit, condenser fan is run always.Wherein: Tc is machine
The corresponding saturation temperature of group high pressure P high；Tcmax is unit maximum condensation temperature；Tcmin is unit minimum condensation temperature.
The control program of the prior art the problem is that, at low ambient temperatures condensation fan can frequent start-stop, blower
Frequent start-stop can reduce motor reliability；There are also the frequent start-stops of blower will lead to system pressure in frequent fluctuation, cause entirely be
The reliability of system reduces.
Summary of the invention
In view of this, the present invention provides a kind of condensation unit progress control methods, comprising: pressure ratio detecting step is used for
The pressure ratio of detection condensation unit, the pressure ratio of the condensation unit are condensation unit exhaust outlet of compressor pressure and condensation unit compression
The ratio between machine air entry pressure；Frequency adjusting step, the variation of the pressure ratio of the condensation unit for detecting according to adjust cold
The pressure ratio of the working frequency of solidifying blower, the working frequency and the condensation unit detected that make the condensation fan is adapted.
Optionally, the pressure ratio of the detection condensation unit includes: to detect the condensation unit compression by high pressure sensor
Machine exhaust port pressure and the condensation unit compressor air suction mouth pressure；According to the condensation unit compressor air-discharging detected
The pressure ratio of unit is condensed described in mouth pressure and the condensation unit compressor air suction mouth calculation of pressure.
Optionally, the frequency adjusting step further includes energy-saving mode frequency adjusting step, the energy-saving mode frequency tune
Saving step includes: that the working frequency of the condensation fan in n-th of period is adjusted to f (n)=f (n-1)+K* (Pb-Pbmin)；Its
Middle K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the condensation fan of setting
Minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum operation pressure of setting
Than Pbmax is the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fh is set.
Optionally, the frequency adjusting step further includes etiquette mode frequency adjusting step, the etiquette mode frequency
Rate regulating step includes: that the working frequency of the condensation fan in n-th of period is adjusted to f (n)=f (n-1)-K* (Pbmax-
Pb)；Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the cold of setting
Solidifying blower minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum fortune of setting
Row pressure ratio, Pbmax are the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fl is set.
Optionally, further includes: if f (n) > fh, the working frequency of the condensation fan is adjusted to f (n)=fh；If f
(n) working frequency of the condensation fan is then adjusted to f (n)=fl by < fl.
Optionally, further includes: if Pb > Pbmin, open the condensation fan.
Optionally, further includes: if the working frequency of continuous N number of period condensation fan is fl, and Pb < Pbmin, then stop institute
Condensation fan operation is stated, N is predetermined period number threshold value, wherein >=1 N.
Optionally, the predetermined period number threshold value N=2.
Optionally, further includes: when adjusting the working frequency of the condensation fan, selected according to default setting or according to
Use demand switches the energy-saving mode frequency adjusting step, the etiquette mode frequency adjusting step and normal mode frequency
Regulating step；The normal mode frequency adjusting step includes: that the working frequency of the condensation fan in n-th of period is adjusted to f
(n)=fl+K* (Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；Tc is the condensation unit detected
The corresponding saturation temperature of condensing pressure, Tcmax are the maximum condensation temperature of setting, and Tcmin is the minimum condensation temperature of setting；fl
For the condensation fan minimum operating frequency of setting, fh is the condensation fan maximum running frequency of setting, if f (n) > fh, by institute
The working frequency for stating condensation fan is adjusted to f (n)=fh；If the working frequency of the condensation fan is adjusted to by f (n) < fl
F (n)=fl；If f (n) > 30Hz, opens the condensation fan；If the working frequency of continuous two period condensation fans is
Fl, and Tc < Tcmin then stop the condensation fan operation.
Another aspect of the present invention provides a kind of condensation unit operating control device again, comprising: pressure ratio detection module is used
In the pressure ratio of detection condensation unit, the pressure ratio of the condensation unit is condensation unit exhaust outlet of compressor pressure and condensation unit pressure
The ratio between contracting machine air entry pressure；The variation of frequency adjustment module, the pressure ratio of the condensation unit for detecting according to is adjusted
The working frequency of condensation fan fits the working frequency of the condensation fan and the pressure ratio of the condensation unit detected mutually
It answers.
Optionally, the pressure ratio detection module includes: pressure sensing cell, described cold for being detected by high pressure sensor
Solidifying machine set compressor exhaust port pressure and the condensation unit compressor air suction mouth pressure；Pressure ratio computing unit, for according to inspection
Condensation described in the condensation unit exhaust outlet of compressor pressure and the condensation unit compressor air suction mouth calculation of pressure measured
The pressure ratio of unit.
Optionally, the frequency adjustment module includes that energy-saving mode frequency adjusts unit, is used for: cold by n-th period
The working frequency of solidifying blower is adjusted to f (n)=f (n-1)+K* (Pb-Pbmin)；Wherein K=[fh-fl]/(Pbmax-Pbmin),
Pb is the pressure ratio of the condensation unit detected, and fl is the condensation fan minimum operating frequency of setting, and fh is the condensation of setting
Blower maximum running frequency, Pbmin are the condensation unit minimum operation pressure ratio of setting, and Pbmax is that the condensation unit of setting is maximum
Run pressure ratio；N >=1；F (0)=fh is set.
Optionally, the frequency adjustment module further includes that etiquette mode frequency adjusts unit, is used for: by n-th of period
The working frequency of condensation fan be adjusted to
F (n)=f (n-1)-K* (Pbmax-Pb)；Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are described detect
Condensation unit pressure ratio, fl be setting condensation fan minimum operating frequency, fh be setting condensation fan highest run frequently
Rate, Pbmin are the condensation unit minimum operation pressure ratio of setting, and Pbmax is the condensation unit maximum operation pressure ratio of setting；N >=1；
F (0)=fl is set.
Optionally, it is also used to: if f (n) > fh, the working frequency of the condensation fan being adjusted to f (n)=fh；If f
(n) working frequency of the condensation fan is then adjusted to f (n)=fl by < fl.
Optionally, it is also used to: if Pb > Pbmin, opening the condensation fan.
Optionally, it is also used to: if the working frequency of continuous N number of period condensation fan is fl, and Pb < Pbmin, then stopping institute
Condensation fan operation is stated, N is predetermined period number threshold value, wherein >=1 N.
Optionally, the predetermined period number threshold value N=2.
Optionally, further include selection switching module, be used for: when adjusting the working frequency of the condensation fan, according to silent
Recognize setting selection or the energy-saving mode frequency is switched according to use demand and adjusts unit, etiquette mode frequency adjusting
Unit and normal mode frequency adjust unit；The normal mode frequency adjusts unit and is used for: by the condensation fan in n-th of period
Working frequency be adjusted to f (n)=fl+K* (Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；Tc is the inspection
The corresponding saturation temperature of condensing pressure of the condensation unit measured, Tcmax are the maximum condensation temperature of setting, and Tcmin is setting
Minimum condensation temperature；Fl is the condensation fan minimum operating frequency of setting, and fh is the condensation fan maximum running frequency of setting,
If f (n) > fh, the working frequency of the condensation fan is adjusted to f (n)=fh；If f (n) < fl, by the condensation fan
Working frequency be adjusted to f (n)=fl；If f (n) > 30Hz, opens the condensation fan；If continuous two period condensating winds
The working frequency of machine is fl, and Tc < Tcmin, then stops the condensation fan operation.
Another aspect of the invention additionally provides a kind of refrigeration equipment, has the operation control of condensation unit described in any of the above item
Device processed.
Technical solution provided by the invention can adjust in time the work of condensation fan according to the variation of the pressure ratio of condensation unit
Working frequency, it is ensured that condensation fan will not frequent start-stop, system pressure is constantly in stable state, guarantees the reliability of complete machine.Together
When can also according to use demand in actual use switch refrigeration equipment condensation fan operational mode.Specifically, when cold
Solidifying unit during transportation, is switched to energy conservation model, guarantees that unit is in always under high energy efficiency and runs, energy saving is same
When ensure that the temperature inside the box is rapidly decreased to user's required temperature, ensure that the safety of cargo；When unit arrives at the destination preparation unloading
When, it is switched to low noise operational mode, while maintaining cargo required temperature, unit noise is reduced, unloads convenient for staff,
The mode switch function greatly improves unit practicability and reliability while ensure that cargo security in library.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the general frame figure of condensation unit progress control method provided by the invention；
Fig. 2 is to determine frequency blower and comparison diagram that frequency conversion fan operational process pressure changes over time；
Fig. 3 is the control flow chart of the operating mode selection switching of condensation unit progress control method provided by the invention；
Fig. 4 is the energy-saving mode of condensation unit progress control method provided by the invention and the control flow of etiquette mode
Figure；
Fig. 5 is the overall structure figure of condensation unit operating control device provided by the invention；
Fig. 6 is a kind of structural schematic diagram of preferred embodiment of condensation unit operating control device provided by the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The present invention provides a kind of condensation unit progress control methods.Fig. 1 is condensation unit operation control provided by the invention
The general frame figure of method processed.As shown in Figure 1, it includes: pressure ratio detecting step S110 that the present invention, which condenses unit progress control method,
For detecting the pressure ratio of condensation unit, the pressure ratio of the condensation unit is condensation unit exhaust outlet of compressor pressure and condensation unit
The ratio between compressor air suction mouth pressure；Frequency adjusting step S120, the change of the pressure ratio of the condensation unit for being detected according to
Change the working frequency for adjusting condensation fan, makes the working frequency of the condensation fan and the pressure ratio of the condensation unit detected
It is adapted.Technical solution of the present invention adjusts the working frequency of the condensation fan of refrigeration equipment according to the variation of pressure ratio in real time, can
Solve the problems, such as that the frequent start-stop of condensation fan and the frequent start-stop of blower lead to the frequent wave of system pressure to unit at low ambient temperatures
Dynamic problem.Fig. 2 is to determine frequency blower and comparison diagram that frequency conversion fan operational process pressure changes over time.As shown in Fig. 2, due to reality
When adjust the working frequency of condensation fan, frequency conversion fan pressure level-off after a period of time has passed greatly improves machine
The reliability of group.
Fig. 3 is the control flow chart of the operating mode selection switching of condensation unit progress control method provided by the invention.
Referring to Fig. 1 and Fig. 3, step S110, the pressure ratio of the detection condensation unit includes: step S111, is detected by high pressure sensor
The condensation unit exhaust outlet of compressor pressure and the condensation unit compressor air suction mouth pressure；Step S112, according to detection
Freezing machine described in the condensation unit exhaust outlet of compressor pressure and the condensation unit compressor air suction mouth calculation of pressure arrived
The pressure ratio of group.
Referring back to Fig. 3, a kind of embodiment of unit progress control method is condensed according to the present invention, and the frequency adjusts step
It suddenly further include energy-saving mode frequency adjusting step S121, the energy-saving mode frequency adjusting step includes: cold by n-th period
The working frequency of solidifying blower is adjusted to f (n)=f (n-1)+K* (Pb-Pbmin)；Wherein K=[fh-fl]/(Pbmax-Pbmin),
Pb is the pressure ratio of the condensation unit detected, and fl is the condensation fan minimum operating frequency of setting, and fh is the condensation of setting
Blower maximum running frequency, Pbmin are the condensation unit minimum operation pressure ratio of setting, and Pbmax is that the condensation unit of setting is maximum
Run pressure ratio；N >=1；F (0)=fh is set.The control thought of above-mentioned energy-saving mode is: system pressure ratio is pressed as close possible to minimum
Than blower operates in highest frequency as far as possible.Initial value f (0)=fh is set, i.e. initial value is maximum running frequency, then root
Adjust the working frequency of condensation fan in real time according to the variation of the pressure ratio of condensation unit.When condensation unit is run in the energy-saving mode,
Allow blower frequency in the case where most descending pressure ratio and maximum pressure ratio without departing from compressor fan operation in highest frequency, fan operation
Frequency height can accelerate convection current, and such condensation temperature can be minimum, and power is minimum, efficiency highest.
Referring back to Fig. 3, a kind of embodiment of unit progress control method is condensed according to the present invention, and the frequency adjusts step
It suddenly further include etiquette mode frequency adjusting step S122, the etiquette mode frequency adjusting step includes: by n-th of period
The working frequency of condensation fan be adjusted to f (n)=f (n-1)-K* (Pbmax-Pb)；Wherein K=[fh-fl]/(Pbmax-
Pbmin), Pb is the pressure ratio of the condensation unit detected, and fl is the condensation fan minimum operating frequency of setting, and fh is setting
Condensation fan maximum running frequency, Pbmin be setting condensation unit minimum operation pressure ratio, Pbmax be set freezing machine
The maximum operation pressure ratio of group；N >=1；F (0)=fl is set.Initial value f (0)=fl is set, i.e. initial value is minimum operating frequency,
Then the working frequency of condensation fan is adjusted in real time according to the variation of the pressure ratio of condensation unit.Etiquette mode control thought is:
For system pressure ratio as close possible to maximum pressure ratio, blower operates in low-limit frequency as far as possible, noise can be preferably minimized in this way, to the greatest extent
Amount is reduced because noise bring discomfort is interfered.
Referring back to Fig. 3, a kind of embodiment of unit progress control method is condensed according to the present invention, and the frequency adjusts step
It suddenly further include normal mode frequency adjusting step S123, the normal mode frequency adjusting step S123 includes: by n-th of period
The working frequency of condensation fan be adjusted to f (n)=fl+K* (Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；
Tc is the corresponding saturation temperature of condensing pressure of the condensation unit detected, and Tcmax is the maximum condensation temperature of setting,
Tcmin is the minimum condensation temperature of setting；Fl be setting condensation fan minimum operating frequency, fh be set condensation fan most
The working frequency of the condensation fan is adjusted to f (n)=fh if f (n) > fh by high running frequency；It, will if f (n) < fl
The working frequency of the condensation fan is adjusted to f (n)=fl；If f (n) > 30Hz, opens the condensation fan；If continuous two
The working frequency of a period condensation fan is fl, and Tc < Tcmin, then stops the condensation fan operation.
Referring back to Fig. 3, when adjusting the working frequency of the condensation fan, can be selected according to default setting or according to making
Switch the energy-saving mode frequency adjusting step S121, the etiquette mode frequency adjusting step S122 and conventional mould with demand
Formula frequency adjusting step S123.These three operational modes respectively have advantage and disadvantage: energy-saving mode mainly considers power saving, this mode is most
Energy conservation does not account for noise；Etiquette mode mainly considers noise-reducing problem, this mode noise is minimum, does not account for energy conservation, should
Mode is least energy saving compared with other two modes；Normal mode takes into account the advantage and disadvantage of two modes, is not most energy saving, nor
Noise is highest.User in use can be according to specifically used demand in energy-saving mode, etiquette mode and normal mode
Between switch.Specifically, when unit during transportation, be switched to highest energy efficiency mode, guarantee that unit is in high energy efficiency always
Lower operation, energy saving ensure that the temperature inside the box is rapidly decreased to user's required temperature simultaneously, ensure that the safety of cargo；When unit arrives
When preparing to unload up to destination, unit is switched to low noise operational mode, while maintaining cargo required temperature, reduces unit and makes an uproar
Sound, unloads convenient for staff, which greatly improves unit while ensure that cargo security in library
Practicability and reliability.
Fig. 4 is the energy-saving mode of condensation unit progress control method provided by the invention and the control flow of etiquette mode
Figure.Both modes are that the working frequency of condensation fan is adjusted according to the variation of the pressure ratio of condensation unit, as shown in figure 4, controlling
Step S310 detection pressure ratio value Pb is first carried out in process processed, then executes step S320 and judges whether Pb > Pbmin, if then
It executes step S330 and opens the condensation fan, otherwise, then it crosses one section of preset time and executes step S310 detection pressure ratio again
Value Pb, the preset time is shorter, and the real-time of system control is stronger.
As Fig. 4 executes step S340 according to formula and calculate working frequency after step S330 opens the condensation fan
F (n), the step for calculation formula will according to the operating mode of system, it has been observed that energy-saving mode frequency calculate formula be f
(n)=f (n-1)+K* (Pb-Pbmin)；The formula that etiquette mode frequency calculates is f (n)=f (n-1)-K* (Pbmax-Pb).
Operating mode can be selected according to the default setting of system, or be switched according to the use demand of user.
As Fig. 4 if f (n) > fh, thens follow the steps S350 for institute after the value that step S340 calculates working frequency f (n)
The working frequency for stating condensation fan is adjusted to f (n)=fh；If f (n) < fl, S360 is thened follow the steps by the work of the condensation fan
Working frequency is adjusted to f (n)=fl；If fl≤f (n)≤fh, S370 is thened follow the steps according to formula calculated result and adjusts work frequency
Rate.After step S350, step S360 and step S370, next executing step S380 makes condensation fan according to adjusted
Frequency runs a cycle.
As Fig. 4 is held after step S350 and step S380 condensation fan run a cycle according to frequency adjusted
Row step S390 judges whether that the working frequency of continuous N number of period condensation fan is fl, and Pb < Pbmin, if so then execute step
S395 stops the condensation fan operation, and wherein N is predetermined period number threshold value, and >=1 N (preferably, can predetermined period number threshold value
N=2).The step S310 that step S395 stops returning after starting after the condensation fan operation detects pressure ratio Pb, and repetition is held
Row above-mentioned steps.
Other two kinds of situations are transported in step S360, step S370 and step S380 condensation fan according to frequency adjusted
It after row a cycle, executes step S310 and detects pressure ratio Pb again, return again to step S340 according to formula and calculate working frequency f
(n), above-mentioned steps are repeated.
It is run in two kinds of operational modes in energy-saving mode and low noise, the length of time in each period can be according to practical need
Reasonable set is sought, the time of setting is shorter, and the time performance that system is adjusted is stronger.
Another aspect of the present invention provides a kind of condensation unit operating control device again.Fig. 5 is provided by the invention cold
The overall structure figure of solidifying unit operating control device.As shown in figure 5, it includes: pressure ratio that the present invention, which condenses unit operating control device,
Detection module 100, for detecting the pressure ratio of condensation unit, the pressure ratio of the condensation unit is condensation unit exhaust outlet of compressor pressure
The ratio between power and condensation unit compressor air suction mouth pressure；Frequency adjustment module 200, the condensation unit for being detected according to
Pressure ratio variation adjust condensation fan working frequency, make the condensation fan working frequency and the condensation detected
The pressure ratio of unit is adapted.
Fig. 6 is a kind of structural schematic diagram of preferred embodiment of condensation unit operating control device provided by the invention.Such as
Shown in Fig. 6, a kind of embodiment of unit operating control device is condensed according to the present invention, and the pressure ratio detection module 100 includes:
Pressure sensing cell 110, for detecting the condensation unit exhaust outlet of compressor pressure and the condensation by high pressure sensor
Machine set compressor air entry pressure；Pressure ratio computing unit 120, for according to the condensation unit exhaust outlet of compressor pressure detected
With the pressure ratio for condensing unit described in the condensation unit compressor air suction mouth calculation of pressure.
Referring to figs. 5 and 6, a kind of embodiment of unit operating control device, the frequency tune are condensed according to the present invention
Section module 200 further includes that energy-saving mode frequency adjusts unit 210, is used for: by the working frequency tune of the condensation fan in n-th of period
Whole is f (n)=f (n-1)+K* (Pb-Pbmin)；Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb detect cold for described in
The pressure ratio of solidifying unit, fl are the condensation fan minimum operating frequency of setting, and fh is the condensation fan maximum running frequency of setting,
Pbmin is the condensation unit minimum operation pressure ratio of setting, and Pbmax is the condensation unit maximum operation pressure ratio of setting；N >=1；If
Set f (0)=fh.
Referring to figs. 5 and 6, a kind of embodiment of unit operating control device, the frequency tune are condensed according to the present invention
Section module 200 further includes that etiquette mode frequency adjusts unit 220, is used for: by the working frequency of the condensation fan in n-th of period
It is adjusted to f (n)=f (n-1)-K* (Pbmax-Pb)；Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are described to be detected
The pressure ratio of unit is condensed, fl is the condensation fan minimum operating frequency of setting, and fh is the condensation fan maximum running frequency of setting,
Pbmin is the condensation unit minimum operation pressure ratio of setting, and Pbmax is the condensation unit maximum operation pressure ratio of setting；N >=1；If
Set f (0)=fl.
A kind of embodiment of unit operating control device is condensed according to the present invention, and the frequency adjustment module 200 is also used
In: if f (n) > fh, the working frequency of the condensation fan is adjusted to f (n)=fh；If f (n) < fl, by the condensation
The working frequency of blower is adjusted to f (n)=fl.
A kind of embodiment of unit operating control device is condensed according to the present invention, and the frequency adjustment module 200 is also used
In: if Pb > Pbmin, then open the condensation fan.
A kind of embodiment of unit operating control device is condensed according to the present invention, and the frequency adjustment module 200 is also used
In: if the working frequency of continuous N number of period condensation fan is fl, and Pb < Pbmin, then stop the condensation fan operation, N is
Predetermined period number threshold value, wherein >=1 N.
A kind of embodiment of unit operating control device, the predetermined period number threshold value N=2 are condensed according to the present invention.
It further include selection switching as shown in fig. 6, condensing a kind of embodiment of unit operating control device according to the present invention
Module 300, is used for: when adjusting the working frequency of the condensation fan, being selected according to default setting or according to use demand
Switch the energy-saving mode frequency and adjusts unit 210, etiquette mode frequency adjusting unit 220 and normal mode frequency tune
Save unit 230；The normal mode frequency adjusts unit 230 and is used for: the working frequency of the condensation fan in n-th of period is adjusted
For f (n)=fl+K* (Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；Tc is the condensation unit detected
The corresponding saturation temperature of condensing pressure, Tcmax be setting maximum condensation temperature, Tcmin be set minimum condensation temperature；
Fl is the condensation fan minimum operating frequency of setting, and fh is the condensation fan maximum running frequency of setting, will if f (n) > fh
The working frequency of the condensation fan is adjusted to f (n)=fh；If f (n) < fl, the working frequency of the condensation fan is adjusted
For f (n)=fl；If f (n) > 30Hz, opens the condensation fan；If the working frequency of continuous two period condensation fans is
Fl, and Tc < Tcmin then stop the condensation fan operation.
Another aspect of the invention additionally provides a kind of refrigeration equipment, has the operation control of condensation unit described in any of the above item
Device processed.
Technical solution provided by the invention can adjust in time the work of condensation fan according to the variation of the pressure ratio of condensation unit
Working frequency, it is ensured that condensation fan will not frequent start-stop, system pressure is constantly in stable state, guarantees the reliability of complete machine.Together
When can also according to use demand in actual use switch refrigeration equipment condensation fan operational mode.Specifically, when cold
Solidifying unit during transportation, is switched to energy conservation model, guarantees that unit is in always under high energy efficiency and runs, energy saving is same
When ensure that the temperature inside the box is rapidly decreased to user's required temperature, ensure that the safety of cargo；When unit arrives at the destination preparation unloading
When, it is switched to low noise operational mode, while maintaining cargo required temperature, unit noise is reduced, unloads convenient for staff,
The mode switch function greatly improves unit practicability and reliability while ensure that cargo security in library.
Function described herein can be implemented in hardware, the software executed by processor, firmware or any combination thereof.
If implemented in the software executed by processor, computer can be stored in using function as one or more instructions or codes
It is transmitted on readable media or via computer-readable media.Other examples and embodiment are wanted in the present invention and appended right
It asks in the scope and spirit of book.For example, due to the property of software, function described above can be used by processor,
Hardware, firmware, hardwired or the software implementation for appointing the combination of whichever to execute in these.In addition, each functional unit can integrate
In one processing unit, it is also possible to each unit to physically exist alone, can also be integrated in two or more units
In one unit.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, and fill as control
The component set may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (19)
1. a kind of condensation unit progress control method characterized by comprising
Pressure ratio detecting step, for detecting the pressure ratio of condensation unit, the pressure ratio of the condensation unit is condensation machine set compressor row
The ratio between outlet pressure and condensation unit compressor air suction mouth pressure；
The variation of frequency adjusting step, the pressure ratio of the condensation unit for detecting according to adjusts the work frequency of condensation fan
The pressure ratio of rate, the working frequency and the condensation unit detected that make the condensation fan is adapted.
2. the method according to claim 1, wherein the pressure ratio of the detection condensation unit includes:
The condensation unit exhaust outlet of compressor pressure and the condensation unit compressor air suction mouth are detected by high pressure sensor
Pressure；
According to the condensation unit exhaust outlet of compressor pressure and the condensation unit compressor air suction mouth pressure gauge detected
Calculate the pressure ratio of the condensation unit.
3. method according to claim 1 or 2, which is characterized in that the frequency adjusting step further includes energy-saving mode frequency
Rate regulating step, the energy-saving mode frequency adjusting step include:
The working frequency of the condensation fan in n-th of period is adjusted to
F (n)=f (n-1)+K* (Pb-Pbmin)；
Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the cold of setting
Solidifying blower minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum fortune of setting
Row pressure ratio, Pbmax are the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fh is set.
4. method according to claim 1 or 2, which is characterized in that the frequency adjusting step further includes etiquette mode
Frequency adjusting step, the etiquette mode frequency adjusting step include:
The working frequency of the condensation fan in n-th of period is adjusted to
F (n)=f (n-1)-K* (Pbmax-Pb)；
Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the cold of setting
Solidifying blower minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum fortune of setting
Row pressure ratio, Pbmax are the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fl is set.
5. the method according to claim 3 or 4, which is characterized in that further include:
If f (n) > fh, the working frequency of the condensation fan is adjusted to f (n)=fh；
If f (n) < fl, the working frequency of the condensation fan is adjusted to f (n)=fl.
6. the method according to any one of claim 3-5, which is characterized in that further include: if Pb > Pbmin, open institute
State condensation fan.
7. the method according to any one of claim 3-6, which is characterized in that further include: if continuous N number of period condensating wind
The working frequency of machine is fl, and Pb < Pbmin, then stops the condensation fan operation, and N is predetermined period number threshold value, wherein N >=
1。
8. the method according to the description of claim 7 is characterized in that the predetermined period number threshold value N=2.
9. the method according to any one of claim 4-8, which is characterized in that further include:
When adjusting the working frequency of the condensation fan, is selected according to default setting or the section is switched according to use demand
It can mode frequency regulating step, the etiquette mode frequency adjusting step and normal mode frequency adjusting step；
The normal mode frequency adjusting step include: by the working frequency of the condensation fan in n-th of period be adjusted to f (n)=
fl+K*(Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；Tc is the condensation pressure of the condensation unit detected
The corresponding saturation temperature of power, Tcmax are the maximum condensation temperature of setting, and Tcmin is the minimum condensation temperature of setting；Fl is setting
Condensation fan minimum operating frequency, fh be setting condensation fan maximum running frequency, if f (n) > fh, by the condensation
The working frequency of blower is adjusted to f (n)=fh；If f (n) < fl, by the working frequency of the condensation fan be adjusted to f (n)=
fl；If f (n) > 30Hz, opens the condensation fan；If the working frequency of continuous two period condensation fans is fl, and Tc <
Tcmin then stops the condensation fan operation.
10. a kind of condensation unit operating control device characterized by comprising
Pressure ratio detection module, for detecting the pressure ratio of condensation unit, the pressure ratio of the condensation unit is condensation machine set compressor row
The ratio between outlet pressure and condensation unit compressor air suction mouth pressure；
The variation of frequency adjustment module, the pressure ratio of the condensation unit for detecting according to adjusts the work frequency of condensation fan
The pressure ratio of rate, the working frequency and the condensation unit detected that make the condensation fan is adapted.
11. device according to claim 10, which is characterized in that the pressure ratio detection module includes:
Pressure sensing cell, for detecting the condensation unit exhaust outlet of compressor pressure and the condensation by high pressure sensor
Machine set compressor air entry pressure；
Pressure ratio computing unit, for according to the condensation unit exhaust outlet of compressor pressure and the condensation unit pressure detected
The pressure ratio of unit is condensed described in contracting machine air entry calculation of pressure.
12. device described in 0 or 11 according to claim 1, which is characterized in that the frequency adjustment module includes energy-saving mode frequency
Rate adjusts unit, is used for:
The working frequency of the condensation fan in n-th of period is adjusted to
F (n)=f (n-1)+K* (Pb-Pbmin)；
Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the cold of setting
Solidifying blower minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum fortune of setting
Row pressure ratio, Pbmax are the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fh is set.
13. device described in 0 or 11 according to claim 1, which is characterized in that the frequency adjustment module further includes low noise mould
Formula frequency adjusts unit, is used for:
The working frequency of the condensation fan in n-th of period is adjusted to
F (n)=f (n-1)-K* (Pbmax-Pb)；
Wherein K=[fh-fl]/(Pbmax-Pbmin), Pb are the pressure ratio of the condensation unit detected, and fl is the cold of setting
Solidifying blower minimum operating frequency, fh are the condensation fan maximum running frequency of setting, and Pbmin is the condensation unit minimum fortune of setting
Row pressure ratio, Pbmax are the condensation unit maximum operation pressure ratio of setting；N >=1；F (0)=fl is set.
14. device according to claim 12 or 13, which is characterized in that be also used to:
If f (n) > fh, the working frequency of the condensation fan is adjusted to f (n)=fh；
If f (n) < fl, the working frequency of the condensation fan is adjusted to f (n)=fl.
15. device described in any one of 2-14 according to claim 1, which is characterized in that be also used to: if Pb > Pbmin, opening
Open the condensation fan.
16. device described in any one of 2-15 according to claim 1, which is characterized in that be also used to: if continuous N number of period is cold
The working frequency of blower is coagulated for fl, and Pb < Pbmin, then stop the condensation fan operation, N is predetermined period number threshold value, wherein
>=1 N.
17. device according to claim 16, which is characterized in that the predetermined period number threshold value N=2.
18. device described in any one of 3-17 according to claim 1, which is characterized in that further include selection switching module, use
In: when adjusting the working frequency of the condensation fan, is selected according to default setting or the section is switched according to use demand
It can mode frequency adjusting unit, etiquette mode frequency adjusting unit and normal mode frequency adjusting unit；
The normal mode frequency adjusts unit and is used for: by the working frequency of the condensation fan in n-th of period be adjusted to f (n)=
fl+K*(Tc-Tcmin)；Wherein K=[fh-fl]/(Tcmax-Tcmin)；Tc is the condensation pressure of the condensation unit detected
The corresponding saturation temperature of power, Tcmax are the maximum condensation temperature of setting, and Tcmin is the minimum condensation temperature of setting；Fl is setting
Condensation fan minimum operating frequency, fh be setting condensation fan maximum running frequency, if f (n) > fh, by the condensation
The working frequency of blower is adjusted to f (n)=fh；If f (n) < fl, by the working frequency of the condensation fan be adjusted to f (n)=
fl；If f (n) > 30Hz, opens the condensation fan；If the working frequency of continuous two period condensation fans is fl, and Tc <
Tcmin then stops the condensation fan operation.
19. a kind of refrigeration equipment has the condensation unit operating control device as described in any one of claim 10-18.
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| CN201811309161.3A CN109458776B (en) | 2016-10-18 | 2016-10-18 | Condensing unit operation control method and device and refrigeration equipment with same |
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| CN201811309161.3A CN109458776B (en) | 2016-10-18 | 2016-10-18 | Condensing unit operation control method and device and refrigeration equipment with same |
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| CN109899289A (en) * | 2019-04-23 | 2019-06-18 | 西安交通大学 | A kind of double rolling piston compressor structures and its control method of Dual-motors Driving |
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| CN109458776B (en) * | 2016-10-18 | 2021-03-23 | 珠海格力电器股份有限公司 | Condensing unit operation control method and device and refrigeration equipment with same |
| CN107238180B (en) * | 2017-06-23 | 2020-07-07 | 特灵空调系统(中国)有限公司 | Air quantity control method and system of air-cooled water chilling unit |
| CN107238240B (en) * | 2017-06-29 | 2020-05-08 | 重庆美的通用制冷设备有限公司 | Air-cooled water chilling unit and control method and device of fan of air-cooled water chilling unit |
| CN107461970B (en) * | 2017-07-19 | 2021-09-21 | 青岛海尔空调电子有限公司 | Control method of water chilling unit with evaporative condenser |
| CN107576019B (en) | 2017-10-12 | 2019-10-01 | 广东美的暖通设备有限公司 | Air-conditioning system and its pressure ratio control method and control device |
| CN109253521B (en) * | 2018-09-30 | 2019-12-24 | 珠海格力电器股份有限公司 | Noise control method, device and system, air conditioner and computer readable storage medium |
| CN111520894B (en) * | 2020-07-03 | 2020-11-27 | 宁波奥克斯电气股份有限公司 | Output control method and device for air conditioner compressor, air conditioner and storage medium |
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| CN106595154B (en) | 2019-01-18 |
| CN106595154A (en) | 2017-04-26 |
| CN109458776B (en) | 2021-03-23 |
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