CN106403486A - Control method and control device for frequency-conversion refrigeration device, and refrigerator - Google Patents
Control method and control device for frequency-conversion refrigeration device, and refrigerator Download PDFInfo
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- CN106403486A CN106403486A CN201610800932.3A CN201610800932A CN106403486A CN 106403486 A CN106403486 A CN 106403486A CN 201610800932 A CN201610800932 A CN 201610800932A CN 106403486 A CN106403486 A CN 106403486A
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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Abstract
The invention provides a control method and a control device for a frequency-conversion refrigeration device, and a refrigerator. The control method for the frequency-conversion refrigeration device comprises the following steps: recording a carrier frequency of a frequency converter as an initial frequency during running of the frequency-conversion refrigeration device; detecting a temperature value T0 of a power switch device in the frequency-conversion refrigeration device; comparing the temperature value T0 of the power switch device with a preset temperature value T1; and adjusting the carrier frequency according to a comparison result. According to the control method for the frequency-conversion refrigeration device, which is provided by the invention, the temperature value T0 of the power switch device is compared with the preset temperature value T1, and the carrier frequency is adjusted to a proper range according to the comparison result. Thus heating of the power device can be reduced, and the reliability of the frequency converter is improved. Meanwhile, the power switch device is also protected, the service life of the frequency-conversion refrigeration device is prolonged, ineffective energy consumption is effectively reduced, and energy conservation and environment protection are achieved.
Description
Technical field
The present invention relates to refrigeration technology field, in particular to a kind of control method of frequency conversion refrigerating plant, control dress
Put and refrigerator.
Background technology
Nowadays almost there is refrigerator in each family, because of the use characteristic of its whole day not power-off, becomes phase in household electricity
When big ingredient.For reducing refrigerator power consumption, saves energy environmental protection, many family selections refrigeration more preferably and
The frequency conversion refrigerator of more energy-conserving and environment-protective.
In frequency conversion control technique, the carrier frequency of converter is opening and turning off of the device for power switching of decision inverter
Number of times, it affect power model power attenuation.When carrier frequency is big, current waveform sine is good and smooth, but during dead band
Between aggregate-value ratio larger, time of converter real work shortens, and leads to output smaller.High power loss can make work(
Rate module heating increases, unfavorable to converter, and can increase power consumption.
Using fixed carrier frequency during current refrigerator work, when selecting low carrier frequency, current waveform can be led to uneven
Sliding, that is, sine is poor, thus during motor rotation, noise is larger and has certain heating.So in actually used, for improving frequency conversion
Control overall performance, higher carrier frequencies can be selected to work.But select higher carrier frequencies work, but can not be well adapted for
All of actual condition, the problems such as easily cause part to generate heat.
Content of the invention
In order to solve at least one above-mentioned technical problem, the embodiment of a first aspect of the present invention proposes a kind of frequency conversion system
The control method of device for cooling.
A second aspect of the present invention embodiment is it is also proposed that a kind of control device of frequency conversion refrigerating plant.
A third aspect of the present invention embodiment is it is also proposed that a kind of refrigerator.
The content of one aspect of the present invention is the on-off times of switching device in reducing the carrier frequency a cycle time,
The loss that driving is reduced with this and device temperature.
If carrier frequency is 6KHz, in the case of 4200rpm (70HZ),
1 cycle time=1/70s=14.29ms=14285us,
The on-off times in 1 cycle=(14285us/166us) * 3 phase=generation 258 times；
If carrier frequency is 5KHz, in the case of 4200rpm (70HZ),
1 cycle time=1/70s=14.29ms=14285us
The on-off times in 1 cycle=(14285us/200us) * 3 phase=generation 214 times.
From the foregoing, reducing the switching frequency that carrier frequency can reduce switching device, and then reduce related device
Temperature and loss.
In view of this, embodiment according to the first aspect of the invention, the present invention proposes a kind of frequency conversion refrigerating plant
Control method, for controlling the carrier frequency of converter in frequency conversion refrigerating plant it is characterised in that including：Step S102, is becoming
The carrier frequency of converter is recorded as original frequency when running by frequency refrigerating plant；Step S104, in detection frequency conversion refrigerating plant
The temperature value T0 of device for power switching；Step S106, the temperature value T0 of device for power switching is compared with preset temperature value T1
Relatively；Step S108, according to the comparative result of step S106, adjusts carrier frequency.
The control method of the frequency conversion refrigerating plant that the present invention provides, by by the temperature value T0 of device for power switching with default
Temperature value T1 is compared, and using comparative result as foundation, adjusts carrier frequency to suitable scope.As device for power switching
Temperature value T0 be more than preset temperature value T1 when, suitably can reduce operating frequency, and to a certain degree reduce become carrier frequency, by
This can reduce the heating of power device, improves the reliability of converter.Also protect device for power switching simultaneously, improve this
The service life of frequency conversion refrigerating plant, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.
In addition, the present invention provide above-described embodiment in frequency conversion refrigerating plant control method can also have attached as follows
Plus technical characteristic：
It is preferable that when the comparative result of step S106 is more than T1 for T0, entering step in technique scheme
S202；Step S202, adjusts carrier frequency to first frequency, first frequency is less than original frequency, wherein, if described original frequency
For system operation minimum frequency, then described original frequency is maintained to continue to run with.
In this technical scheme, when the temperature value T0 of device for power switching is more than preset temperature value T1, can suitably reduce
Operating frequency, and to a certain degree reduce change carrier frequency to first frequency, if original frequency has been the minimum frequency of system operation
Rate, then maintain described original frequency to continue to run with.Because the frequency opened and turn off of device for power switching is too high, number of times excessively can
Lead to temperature too high, the performance of impact components and parts, can reduce carrier frequency, reduce power device when more than uniform temperature
Heating, improves the reliability of converter.Also protect device for power switching simultaneously, improve the use longevity of this frequency conversion refrigerating plant
Life, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.
It is preferable that when the comparative result of step S106 is less than or equal to T1 for T0, entering step in technique scheme
S204；Step S204, whether detection frequency conversion refrigerating plant is in power consumption mode；If frequency conversion refrigerating plant is in power consumption mode,
Enter step S206；Step S206, adjusts carrier frequency to second frequency, second frequency is less than original frequency, wherein, if described
Original frequency is system operation minimum frequency, then maintain described original frequency to continue to run with.
In this technical scheme, if the temperature value T0 of device for power switching is less than or equal to preset temperature value T1, further
Judging whether this frequency conversion refrigerating plant is in power consumption mode, if being in power consumption mode, adjusting carrier frequency to less than initial frequency
The second frequency of rate, if original frequency has been the minimum frequency of system operation, maintains described original frequency to continue to run with.Should
Frequency conversion refrigerating plant, such as frequency conversion refrigerator, when power consumption mode runs, can to a certain degree reduce carrier frequency, reduce power attenuation.
Compared with the refrigerator of traditional fixed frequency, suitably reduce the motility that carrier frequency enhances working condition, and save
Energy consumption.
If it is preferable that frequency conversion refrigerating plant is not in power consumption mode in technique scheme, entering step S208；
Step S208, maintains original frequency to continue to run with.
In this technical scheme, the temperature value T0 of device for power switching is not less than preset temperature value T1, and this frequency conversion system
Device for cooling is not in power consumption mode, and the original frequency before now can keeping is constant, continues to run with.With traditional fixed frequency
Refrigerator compare, by the judgement for temperature and power consumption mode, be frequency conversion refrigerating plant select suitable carrier frequency, strengthen
The motility of working condition be so that this frequency conversion refrigerating plant can select suitable carrier frequency to run, it is to avoid fixing frequency
The problems such as in the refrigerator of rate, device for power switching generates heat, reduces power attenuation, energy-conserving and environment-protective.
In any of the above-described technical scheme it is preferable that after adjusting or maintaining carrier frequency, and through t1 interval time,
Repeating said steps S102 are to described step S108.
In this technical scheme, adjusted after this frequency conversion refrigerating plant according to condition, continue work(in detection frequency conversion refrigerating plant
The temperature value of rate switching device, when being again in conformance with the adjusting condition of carrier frequency, the carrier wave to this frequency conversion refrigerating plant again
Frequency is adjusted.By the lasting detection for this frequency conversion refrigerating plant operating mode, it is suitable to select for it under certain operating mode
Carrier frequency, so can reduce the heating of power device, protect device for power switching, improve the reliability of converter,
Improve the service life of this frequency conversion refrigerating plant, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
Embodiment is it is also proposed that a kind of control device of frequency conversion refrigerating plant according to the second aspect of the invention, for controlling
In frequency conversion refrigerating plant processed, the carrier frequency of converter is it is characterised in that include：Recording unit, in frequency conversion refrigerating plant
During operation, the carrier frequency of converter is recorded as original frequency；Detector unit, for detecting that in frequency conversion refrigerating plant, power is opened
Close the temperature value T0 of device；Comparing unit, for being compared the temperature value T0 of device for power switching with preset temperature value T1；
Adjustment unit, for the comparative result of the temperature value T0 according to device for power switching and preset temperature value T1, adjusts carrier frequency.
The control device of the frequency conversion refrigerating plant that the present invention provides, comparing unit is opened by the power recording detector unit
The temperature value T0 closing device is compared with preset temperature value T1, and using comparative result as foundation, adjustment unit adjusts carrier wave
Frequency is to suitable scope.When temperature value T0 as device for power switching is more than preset temperature value T1, adjustment unit can be suitable
Reduce operating frequency, and to a certain degree reduce change carrier frequency, thus can reduce the heating of power device, improve converter
Reliability.Also protect device for power switching simultaneously, improve the service life of this frequency conversion refrigerating plant, it is invalid to effectively reduce
Energy consumption, energy-conserving and environment-protective.
In addition, the present invention provide above-described embodiment in frequency conversion refrigerating plant control device can also have attached as follows
Plus technical characteristic：
It is preferable that adjustment unit is additionally operable to when T0 is more than T1 in technique scheme, regulation carrier frequency to first
Frequency, first frequency is less than original frequency, wherein, if described original frequency is system operation minimum frequency, remains described first
Beginning frequency continues to run with.
In this technical scheme, when the temperature value T0 of device for power switching is more than preset temperature value T1, adjustment unit is permissible
Suitably reduce operating frequency, and to a certain degree reduce change carrier frequency to first frequency, if original frequency has been system operation
Minimum frequency, then maintain described original frequency to continue to run with.Because the frequency opened with turn off of device for power switching is too high, secondary
Number excessively can lead to temperature too high, the performance of impact components and parts, can reduce carrier frequency, reduce work(when more than uniform temperature
The heating of rate device, improves the reliability of converter.Also protect device for power switching simultaneously, improve this frequency conversion refrigerating plant
Service life, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
It is preferable that detector unit is additionally operable to when T0 is less than or equal to T1 in technique scheme, detection frequency conversion refrigeration dress
Put and whether be in power consumption mode；Adjustment unit is additionally operable to when frequency conversion refrigerating plant is in power consumption mode, adjust carrier frequency to
Second frequency, second frequency is less than original frequency, wherein, if described original frequency is system operation minimum frequency, maintains institute
State original frequency to continue to run with.
In this technical scheme, if the temperature value T0 of device for power switching is less than or equal to preset temperature value T1, detection is single
Unit monitors whether this frequency conversion refrigerating plant is in power consumption mode further, if being in power consumption mode, adjustment unit adjusts carrier wave
Frequency, to the second frequency less than original frequency, if original frequency has been the minimum frequency of system operation, remains described first
Beginning frequency continues to run with.This frequency conversion refrigerating plant, such as frequency conversion refrigerator, when power consumption mode runs, due to reducing when rotating speed is relatively low
Carrier frequency is less on the impact of output current flatness, and adjustment unit can to a certain degree reduce carrier frequency, reduces power attenuation.
Compared with the refrigerator of traditional fixed frequency, suitably reduce the motility that carrier frequency enhances working condition, and save
Energy consumption.
It is preferable that adjustment unit is additionally operable to when frequency conversion refrigerating plant is not in power consumption mode in technique scheme,
Original frequency is maintained to continue to run with.
In this technical scheme, the temperature value T0 of device for power switching is not less than preset temperature value T1, and this frequency conversion system
Device for cooling is not in power consumption mode, and the original frequency before now can keeping is constant, continues to run with.With traditional fixed frequency
Refrigerator compare, by the judgement for temperature and power consumption mode, be frequency conversion refrigerating plant select suitable carrier frequency, strengthen
The motility of working condition be so that this frequency conversion refrigerating plant can select suitable carrier frequency to run, it is to avoid fixing frequency
The problems such as in the refrigerator of rate, device for power switching generates heat, reduces power attenuation, energy-conserving and environment-protective.
In any of the above-described technical scheme it is preferable that after adjusting or maintaining carrier frequency, and through t1 interval time,
Repeat the control process in the control device of frequency conversion refrigerating plant of any of the above-described.
In this technical scheme, adjusted after this frequency conversion refrigerating plant according to condition, continue work(in detection frequency conversion refrigerating plant
The temperature value of rate switching device, when being again in conformance with the adjusting condition of carrier frequency, the carrier wave to this frequency conversion refrigerating plant again
Frequency is adjusted.By the lasting detection for this frequency conversion refrigerating plant operating mode, it is suitable to select for it under certain operating mode
Carrier frequency, so can reduce the heating of power device, protect device for power switching, improve the reliability of converter,
Improve the service life of this frequency conversion refrigerating plant, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
Embodiment is it is also proposed that a kind of refrigerator according to the third aspect of the invention we, including the frequency conversion refrigeration of any of the above-described
The control device of device.
The carrier frequency of refrigerator in this technical scheme, is adjusted according to condition, by the lasting detection for refrigerator operating mode,
Select suitable carrier frequency for it under certain operating mode, so can reduce the heating of power device, protect power to open
Close device, improve the reliability of converter, improve the service life of this frequency conversion refrigerating plant and refrigerator, it is invalid to effectively reduce
Energy consumption, energy-conserving and environment-protective.
The additional aspect of the present invention and advantage will become obvious in following description section, or by the practice of the present invention
Recognize.
Brief description
Fig. 1 shows the schematic flow sheet of the control method of frequency conversion refrigerating plant according to an embodiment of the present；
Fig. 2 shows that the flow process of the control method of the frequency conversion refrigerating plant of another kind of embodiment according to the present invention is illustrated
Figure；
Fig. 3 shows that the flow process of the control method of frequency conversion refrigerating plant of the another embodiment according to the present invention is illustrated
Figure；
Fig. 4 shows the schematic block diagram of the control device of frequency conversion refrigerating plant according to an embodiment of the present；
Fig. 5 shows the schematic block diagram of refrigerator according to an embodiment of the present.
Wherein, in Fig. 4 and Fig. 5, the corresponding relation between reference and component names is：
The control device of 3 frequency conversion refrigerating plants, 302 recording units, 304 detector units, 306 comparing units, 308 adjust list
Unit, 4 refrigerators.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specifically real
Mode of applying is further described in detail to the present invention.It should be noted that in the case of not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Elaborate a lot of details in the following description in order to fully understand the present invention, but, the present invention also may be used
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not described below
Specific embodiment restriction.
Control method referring to Fig. 1 to Fig. 3 description frequency conversion refrigerating plant according to some embodiments of the invention.
As shown in figure 1, the invention provides a kind of control method of frequency conversion refrigerating plant, for controlling frequency conversion refrigerating plant
The carrier frequency of middle converter is it is characterised in that include：Step S102, when frequency conversion refrigerating plant runs by the load of converter
Wave frequency is recorded as original frequency；Step S104, the temperature value T0 of device for power switching in detection frequency conversion refrigerating plant；Step
S106, temperature value T0 and preset temperature value T1 of device for power switching are compared；Step S108, according to the ratio of step S106
Relatively result, adjusts carrier frequency.
The control method of the frequency conversion refrigerating plant that the present invention provides, by by the temperature value T0 of device for power switching with default
Temperature value T1 is compared, and using comparative result as foundation, adjusts carrier frequency to suitable scope.As device for power switching
Temperature value T0 be more than preset temperature value T1 when, suitably can reduce operating frequency, and to a certain degree reduce become carrier frequency, by
This can reduce the heating of power device, improves the reliability of converter.Also protect device for power switching simultaneously, improve this
The service life of frequency conversion refrigerating plant, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.
In one embodiment of the invention it is preferable that as shown in Fig. 2 the comparative result in step S106 is more than for T0
During T1, enter step S202；Step S202, adjusts carrier frequency to first frequency, first frequency is less than original frequency, wherein,
If described original frequency is system operation minimum frequency, described original frequency is maintained to continue to run with.
In this embodiment, when the temperature value T0 of device for power switching is more than preset temperature value T1, fortune can suitably be reduced
Turn frequency, and to a certain degree reduce change carrier frequency to first frequency, if original frequency has been the minimum frequency of system operation,
Described original frequency is then maintained to continue to run with.Because the frequency opened with turn off of device for power switching is too high, number of times excessively can be led
Cause temperature too high, the performance of impact components and parts, can reduce carrier frequency, reduce sending out of power device when more than uniform temperature
Heat, improves the reliability of converter.Also protect device for power switching simultaneously, improve the use longevity of this frequency conversion refrigerating plant
Life, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.
In one embodiment of the invention, as shown in Figure 2 it is preferable that the comparative result in step S106 is less than for T0
During equal to T1, enter step S204；Step S204, whether detection frequency conversion refrigerating plant is in power consumption mode；If frequency conversion refrigeration dress
Put and be in power consumption mode, then enter step S206；Step S206, adjusts carrier frequency to second frequency, second frequency is less than just
Beginning frequency, wherein, if described original frequency is system operation minimum frequency, maintains described original frequency to continue to run with.
In this embodiment, if the temperature value T0 of device for power switching is less than or equal to preset temperature value T1, sentence further
Whether this frequency conversion refrigerating plant disconnected is in power consumption mode, if being in power consumption mode, adjusts carrier frequency to less than original frequency
Second frequency, if original frequency has been the minimum frequency of system operation, maintain described original frequency to continue to run with.With biography
The refrigerator of the fixed frequency of system is compared, and suitably reduces the motility that carrier frequency enhances working condition, and has saved energy consumption.
In one embodiment of the invention, if as shown in Figure 2 it is preferable that frequency conversion refrigerating plant is not in power consumption mode,
Then enter step S208；Step S208, maintains original frequency to continue to run with.
In this embodiment, the temperature value T0 of device for power switching is not less than preset temperature value T1, and this frequency conversion refrigeration
Device is not in power consumption mode, and the original frequency before now can keeping is constant, continues to run with.With traditional fixed frequency
Refrigerator is compared, and by the judgement for temperature and power consumption mode, is that frequency conversion refrigerating plant selects suitable carrier frequency, enhances
The motility of working condition be so that this frequency conversion refrigerating plant can select suitable carrier frequency to run, it is to avoid fixed frequency
Refrigerator in device for power switching the problems such as generate heat, reduce power attenuation, energy-conserving and environment-protective.
In one embodiment of the invention, as shown in Figure 2 it is preferable that after adjusting or maintaining carrier frequency, and through between
Every time t1, repeating said steps S102 to described step S108.
In this embodiment, adjusted after this frequency conversion refrigerating plant according to condition, continue power in detection frequency conversion refrigerating plant
The temperature value of switching device, when being again in conformance with the adjusting condition of carrier frequency, the carrier frequency to this frequency conversion refrigerating plant again
Rate is adjusted.By the lasting detection for this frequency conversion refrigerating plant operating mode, it is suitable to select for it under certain operating mode
Carrier frequency, so can reduce the heating of power device, protect device for power switching, improve the reliability of converter, carry
Rise the service life of this frequency conversion refrigerating plant, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
In one embodiment of the invention, as shown in figure 3, passing through to sentence for switching device temperature and power consumption mode
Disconnected, select to reduce appropriate carrier frequencies or maintain primary frequency, and continue monitoring switch device temperature afterwards, enter and adjust next time
Section process.
In this embodiment, by reducing carrier frequency under different conditions to suitable scope, reduce power device
The heating of part, protects device for power switching, improves the reliability of converter, improves the use longevity of this frequency conversion refrigerating plant
Life, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.And also continue monitoring switch device temperature, weight after adjustment carrier frequency
This control process multiple is it is ensured that when system meets adjusting condition, be adjusted to carrier frequency at any time.
Present invention also offers a kind of control device 3 of frequency conversion refrigerating plant, as shown in figure 4, it is used for controlling frequency conversion to freeze
In device, the carrier frequency of converter is it is characterised in that include：Recording unit 302, for inciting somebody to action when frequency conversion refrigerating plant runs
The carrier frequency of converter is recorded as original frequency；Detector unit 304, for detecting device for power switching in frequency conversion refrigerating plant
Temperature value T0；Comparing unit 306, for being compared the temperature value T0 of device for power switching with preset temperature value T1；Adjust
Section unit 308, for the comparative result of the temperature value T0 according to device for power switching and preset temperature value T1, adjusts carrier frequency
Rate.
In this embodiment, the temperature value T0 of the device for power switching by recording detector unit 304 for the comparing unit 306
It is compared with preset temperature value T1, and using comparative result as foundation, adjustment unit 308 adjusts carrier frequency to suitable model
Enclose.When temperature value T0 as device for power switching is more than preset temperature value T1, adjustment unit 308 can suitably reduce operating frequency
Rate, and to a certain degree reduce change carrier frequency, thus can reduce the heating of power device, improve the reliability of converter.With
When also protect device for power switching, improve the service life of this frequency conversion refrigerating plant, effectively reduce ineffective energy consumption, energy-conservation
Environmental protection.
In one embodiment of the invention, as shown in Figure 4 it is preferable that adjustment unit 308 is additionally operable to be more than T1 in T0
When, adjust carrier frequency to first frequency, first frequency is less than original frequency, wherein, if described original frequency is system operation
Minimum frequency, then maintain described original frequency to continue to run with.
In this embodiment, when the temperature value T0 of device for power switching is more than preset temperature value T1, adjustment unit 308 is permissible
Suitably reduce operating frequency, and to a certain degree reduce change carrier frequency to first frequency, if original frequency has been system operation
Minimum frequency, then maintain described original frequency to continue to run with.Because the frequency opened with turn off of device for power switching is too high, secondary
Number excessively can lead to temperature too high, the performance of impact components and parts, can reduce carrier frequency, reduce work(when more than uniform temperature
The heating of rate device, improves the reliability of converter.Also protect device for power switching simultaneously, improve this frequency conversion refrigerating plant
Service life, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
In one embodiment of the invention, as shown in Figure 4 it is preferable that detector unit 304 is additionally operable to be less than or equal in T0
During T1, whether detection frequency conversion refrigerating plant is in power consumption mode；Adjustment unit 308 is additionally operable to be in energy consumption in frequency conversion refrigerating plant
During pattern, adjust carrier frequency to second frequency, second frequency is less than original frequency, wherein, if described original frequency is system
Run minimum frequency, then maintain described original frequency to continue to run with.
In this embodiment, if the temperature value T0 of device for power switching is less than or equal to preset temperature value T1, detector unit
304 monitor whether this frequency conversion refrigerating plant is in power consumption mode further, if being in power consumption mode, adjustment unit 308 is adjusted
Carrier frequency, to the second frequency less than original frequency, if original frequency has been the minimum frequency of system operation, maintains institute
State original frequency to continue to run with.Adjustment unit 308 can to a certain degree reduce carrier frequency, reduces power attenuation.Consolidate with traditional
The refrigerator determining frequency is compared, and suitably reduces the motility that carrier frequency enhances working condition, and has saved energy consumption.
In one embodiment of the invention, as shown in Figure 4 it is preferable that adjustment unit 308 is additionally operable in frequency conversion refrigeration dress
Put when being not in power consumption mode, maintain original frequency to continue to run with.
In this embodiment, the temperature value T0 of device for power switching is not less than preset temperature value T1, and this frequency conversion refrigeration
Device is not in power consumption mode, and the original frequency before now can keeping is constant, continues to run with.With traditional fixed frequency
Refrigerator is compared, and by the judgement for temperature and power consumption mode, is that frequency conversion refrigerating plant selects suitable carrier frequency, enhances
The motility of working condition be so that this frequency conversion refrigerating plant can select suitable carrier frequency to run, it is to avoid fixed frequency
Refrigerator in device for power switching the problems such as generate heat, reduce power attenuation, energy-conserving and environment-protective.
In one embodiment of the invention it is preferable that after adjusting or maintaining carrier frequency, and through t1 interval time,
Repeat the control process in the control device 3 of frequency conversion refrigerating plant of any of the above-described.
In this embodiment, adjust after this frequency conversion refrigerating plant according to condition, detector unit 304 continues detection frequency conversion refrigeration
The temperature value of device for power switching in device, when being again in conformance with the adjusting condition of carrier frequency, adjustment unit 308 is again to this
The carrier frequency of frequency conversion refrigerating plant is adjusted.By the lasting detection for this frequency conversion refrigerating plant operating mode, certain
Select suitable carrier frequency for it under operating mode, so can reduce the heating of power device, protect device for power switching, carry
The reliability of high converter, improves the service life of this frequency conversion refrigerating plant, effectively reduces ineffective energy consumption, energy-conserving and environment-protective.
In each embodiment of the control device 3 of the frequency conversion refrigerating plant of the present invention, for whole refrigeration system and
Compressor in system, fixed carrier frequency different from the past, but can select with working environment and adjust suitable
Carrier frequency, and carrier frequency can be adjusted when power consumption mode runs or during compressor operating, can also be in compressor shutdown
First adjust carrier frequency afterwards again by compressor start.
Present invention also offers a kind of refrigerator 4, as shown in figure 5, include the control of the frequency conversion refrigerating plant of any of the above-described
Device 3.
In this embodiment, the carrier frequency of refrigerator 4 is adjusted according to condition, by the lasting detection for refrigerator 4 operating mode,
Select suitable carrier frequency for it under certain operating mode, so can reduce the heating of power device, protect power to open
Close device, improve the reliability of converter, improve the service life of refrigerator 4, effectively reduce ineffective energy consumption, energy-conserving and environment-protective.
In the present invention, term " multiple " then refers to two or more, limits unless otherwise clear and definite.Term " peace
Dress ", " being connected ", " connection ", the term such as " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected it is also possible to
It is to be detachably connected, or be integrally connected；" being connected " can be joined directly together it is also possible to be indirectly connected to by intermediary.Right
For those of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, the description of term " embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features with reference to this embodiment or example description, structure, material or feature are contained at least one reality of the present invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.And, the specific features of description, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of control method of frequency conversion refrigerating plant, for controlling the carrier frequency of converter in described frequency conversion refrigerating plant,
It is characterized in that, including：
The carrier frequency of described converter is recorded as original frequency when described frequency conversion refrigerating plant runs by step S102；
Step S104, detects the temperature value T0 of device for power switching in described frequency conversion refrigerating plant；
Step S106, temperature value T0 and preset temperature value T1 of described device for power switching are compared；
Step S108, according to the comparative result of described step S106, adjusts described carrier frequency.
2. the control method of frequency conversion refrigerating plant according to claim 1 is it is characterised in that also include：
When the comparative result of described step S 106 is more than T1 for T0, enter step S202；
Described step S202, adjusts described carrier frequency to first frequency, described first frequency is less than described original frequency, its
In, if described original frequency is system operation minimum frequency, maintain described original frequency to continue to run with.
3. the control method of frequency conversion refrigerating plant according to claim 1 is it is characterised in that also include：
When the comparative result of described step S106 is less than or equal to T1 for T0, enter step S204；
Described step S204, detects whether described frequency conversion refrigerating plant is in power consumption mode；
If described frequency conversion refrigerating plant is in power consumption mode, enter step S206；
Described step S206, adjusts described carrier frequency to second frequency, described second frequency is less than described original frequency, its
In, if described original frequency is system operation minimum frequency, maintain described original frequency to continue to run with.
4. the control method of frequency conversion refrigerating plant according to claim 3 is it is characterised in that also include：
If described frequency conversion refrigerating plant is not in power consumption mode, enter step S208；
Described step S208, maintains described original frequency to continue to run with.
5. frequency conversion refrigerating plant according to any one of claim 1 to 4 control method it is characterised in that
After adjusting or maintaining described carrier frequency, and through t1 interval time, repeating said steps S102 to described step S108.
6. a kind of control device of frequency conversion refrigerating plant, for controlling the carrier frequency of converter in described frequency conversion refrigerating plant,
It is characterized in that, including：
Recording unit, for being recorded as initial frequency when described frequency conversion refrigerating plant runs by the carrier frequency of described converter
Rate；
Detector unit, for detecting the temperature value T0 of device for power switching in described frequency conversion refrigerating plant；
Comparing unit, for being compared the temperature value T0 of described device for power switching with preset temperature value T1；
Adjustment unit, for the comparative result of the temperature value T0 according to described device for power switching and preset temperature value T1, is adjusted
Described carrier frequency.
7. frequency conversion refrigerating plant according to claim 6 control device it is characterised in that
Described adjustment unit is additionally operable to, when T0 is more than T1, adjust described carrier frequency to first frequency, described first frequency is little
In described original frequency, wherein, if described original frequency is system operation minimum frequency, described original frequency is maintained to continue fortune
OK.
8. frequency conversion refrigerating plant according to claim 6 control device it is characterised in that
Described detector unit is additionally operable to, when T0 is less than or equal to T1, detect whether described frequency conversion refrigerating plant is in power consumption mode；
Described adjustment unit is additionally operable to when described frequency conversion refrigerating plant is in power consumption mode, the described carrier frequency of regulation to second
Frequency, described second frequency is less than described original frequency, wherein, if described original frequency is system operation minimum frequency, ties up
Hold described original frequency to continue to run with.
9. frequency conversion refrigerating plant according to claim 8 control device it is characterised in that
Described adjustment unit is additionally operable to, when described frequency conversion refrigerating plant is not in power consumption mode, maintain described original frequency to continue
Run.
10. a kind of refrigerator is it is characterised in that include the control of the frequency conversion refrigerating plant as any one of claim 6 to 9
Device.
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| CN201610800932.3A CN106403486B (en) | 2016-09-02 | 2016-09-02 | Control method, control device and the refrigerator of frequency conversion refrigerating plant |
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| CN201610800932.3A CN106403486B (en) | 2016-09-02 | 2016-09-02 | Control method, control device and the refrigerator of frequency conversion refrigerating plant |
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| CN106403486B CN106403486B (en) | 2019-06-11 |
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| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| WO2020107824A1 (en) * | 2018-11-30 | 2020-06-04 | 广东美的制冷设备有限公司 | Operation control method and system, and compressor and air conditioner |
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|---|---|
| CN106403486B (en) | 2019-06-11 |
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