CN104976108B - It is applied to the compressor variable frequency control system of refrigerator - Google Patents
It is applied to the compressor variable frequency control system of refrigerator Download PDFInfo
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- CN104976108B CN104976108B CN201410140755.1A CN201410140755A CN104976108B CN 104976108 B CN104976108 B CN 104976108B CN 201410140755 A CN201410140755 A CN 201410140755A CN 104976108 B CN104976108 B CN 104976108B
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A kind of compressor variable frequency control system being applied to refrigerator, in order to be arranged at the refrigerator being provided with chamber door with compressor, and comprises mechanical type switching switch, sensing unit, comparing unit and processing unit.Mechanical type switching switch has the change in location stroke being provided with low critical temperature set point with high-critical temperature set point.Sensing unit is in order to sense the first run down time when compressor shuts down.Comparing unit is provided with the second run down time, when mechanical type switching switch switches to high-critical temperature set point, to compare the size of first and second run down time.Processing unit is provided with the operating frequency correction table of the corresponding relation of the time difference comprising first and second run down time and the first correction frequency, determines compressor raising frequency or frequency reducing with the size according to first and second run down time.
Description
Technical field
The present invention relates to a kind of compressor variable frequency control system being applied to refrigerator, particularly relate to a kind of foundation compressor
Run down time determines the compressor variable frequency control system being applied to refrigerator of raising frequency and frequency reducing.
Background technology
Along with the progress of science and technology, in recent years, domestic freezer cold storage refrigerator enters existing Large Copacity, the trend of low power consumption, for
Making domestic refrigerator energy efficiency promote, industry utilizes the features such as the frequency-changeable compressor slow-speed of revolution, the low power of entering, low power consuming, reaches joint
Energy power saving, and then reach the purpose that energy efficiency promotes.Wherein, the control for cold compartment of refrigerator with the temperature of refrigerating chamber comes
Say, be that temperature-sensitive sticker is set in cold room with refrigerating chamber, be set to specific temperature with the temperature detected by temperature-sensitive sticker
The mode of degree scope, the instant motor controlling compressor operates, to reach the control of compressor variable frequency under raising frequency or frequency reducing.
Specifically, the strategy of above-mentioned VFC be utilize temperature-sensitive sticker detection refrigerator indoor temperature (cold room or
Refrigerating chamber), utilize the foundation that the gap between indoor actual temperature and demand temperature changes, temperature spread as compressor frequency
Little, then operate (i.e. rotating speed is slow) for low frequency, make refrigerator can preserve food in storehouse under low power consuming state；Big in temperature spread
Time, then operate (i.e. rotating speed is fast) for upper frequency so that can lower the temperature rapidly in refrigerator.
But, for the mode for employing temperature-sensitive sticker, owing to needs are at cold room, refrigerating chamber installing temperature sensing
Device, therefore relatively costly when manufacturing refrigerator, and produce by mistake owing to temperature-sensitive sticker can be limited to ambient temperature on sensing
Difference, it is impossible to making the efficiency optimization of frequency conversion, therefore, prior art still has the space of improvement.
Summary of the invention
Because existing employing temperature-sensitive sticker carries out in the method for frequency conversion, generally there is cost of manufacture height and frequency conversion effect
The problem of rate variance.Edge this, a kind of compressor variable frequency control system being applied to refrigerator of offer is provided, it is main
If being not required to use temperature-sensitive sticker, the run down time only in accordance with compressor determines raising frequency and frequency reducing.
Based on above-mentioned purpose, technical way of the present invention is to provide a kind of compressor being applied to refrigerator and becomes
Frequently control system, in order to be arranged at refrigerator, refrigerator is provided with at least one chamber door and a compressor, is applied to the compressor variable frequency of refrigerator
Control system comprises a mechanical type switching switch, a sensing unit, a comparing unit and a processing unit.Mechanical type switching switch
Having a change in location stroke, change in location stroke is provided with low critical temperature set point and high-critical temperature set point, makes pressure
When contracting machine is with one first operating frequency operating, on change in location stroke, gradually switch to low critical temperature set point, and in pressure
When contracting machine shuts down, on change in location stroke, gradually switch to high-critical temperature set point.Sensing unit is electrically connected at
Compressor, in order to sense one first run down time when compressor shuts down, uses generation and sends out a sensing letter
Number.
Comparing unit is electrically connected at mechanical type switching switch and sensing unit, and is provided with one second when shutting down
Between, in order to receive sensing signal, use when mechanical type switching switch switches to high-critical temperature set point, compare the first stopping
The size of the duration of runs and the second run down time, according to this first run down time more than the second run down time with
When first run down time is less than the second run down time, produce and send out one first comparison signal and one second respectively
Comparison signal.Processing unit is electrically connected at mechanical type switching switch, comparing unit and compressor, and is provided with one first operating frequency
Rate correction table, the first operating frequency correction table comprise the first run down time and the second run down time time difference and
The corresponding relation of at least one first correction frequency, processing unit is in order to receive the first comparison signal and the second comparison signal, according to this
Compressor is controlled with more than the one the of the first operating frequency respectively according to the first correction frequency of the first operating frequency correction table
Two operating frequency raising frequency operatings, and with one the 3rd operating frequency frequency reducing operating less than the first operating frequency, this second operating
Frequency and the 3rd operating frequency are to be determined with this first correction frequency sum by this first operating frequency.
Wherein, in the first operating frequency correction table, time difference is defined as Δ T, is positioned at N's to-N at time difference Δ T
Time interval, the first correction frequency is 0；When time difference Δ T is positioned at N to 2N interval, the first correction frequency is-f；In the time
When difference DELTA T is more than 2N, the first correction frequency is-2f；When time difference Δ T is positioned at-N to-2N interval, the first correction frequency
Rate is f；When time difference Δ T is less than-2N, the first correction frequency is 2f, and above-mentioned N Yu f is natural number.
Wherein, in the preferred embodiment of the attached technological means of the above-mentioned compressor variable frequency control system being applied to refrigerator,
Further including a detector unit, detector unit is electrically connected at compressor, processing unit and chamber door, in order to shut down at compressor
Time, detection is opened a door opening times of chamber door, is used generation and send out a detection signal, receives detection signal at processing unit
After, the first operating frequency of compressor is controlled according to detection signal.It addition, processing unit is further provided with one second operating frequency correction
Table, the second operating frequency correction table comprises the corresponding relation of door opening times and at least one second correction frequency, connects at processing unit
After receiving detection signal, according to the first correction frequency and the second of the second operating frequency correction table of the first operating frequency correction table
Correction frequency, controls compressor and operates with the one in the second operating frequency and the 3rd operating frequency.
In the preferred embodiment of the attached technological means of the above-mentioned compressor variable frequency control system being applied to refrigerator, further include
One storage element, storage element is electrically connected at sensing unit, comparing unit and detector unit, in order to receive sensing signal with
And detection signal, use storage the first run down time, the second run down time and door opening times.Additionally, mechanical type
Switching switch is made up of temperature memory alloy, is further provided with a target temperature set point in change in location stroke, and target temperature sets
Fixed point is between low critical temperature set point and high-critical temperature set point.It addition, processing unit is electrically connected at compressor
And mechanical type switching switch, in order to when mechanical type switching switch switches to low critical temperature set point, to control compressor and to stop
Only operating, and the value of above-mentioned N Yu f is 5.
After technical way by the compressor variable frequency control system being applied to refrigerator of the present invention, due to
Do not use temperature-sensitive sticker can carry out frequency conversion, therefore can really reduce the cost of manufacture of refrigerator.Additionally, due to temperature be not
According to carrying out frequency conversion, the efficiency of frequency conversion can be promoted thus without error.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 shows the systematic square frame signal of the compressor variable frequency control system being applied to refrigerator of present pre-ferred embodiments
Figure；
Fig. 2 shows the schematic diagram of the mechanical type switching switch of present pre-ferred embodiments；
Fig. 3 shows the first waveform schematic diagram of the VFC of present pre-ferred embodiments；And
Fig. 4 shows the second waveform diagram of the VFC of present pre-ferred embodiments.
Wherein, reference
The 1 compressor variable frequency control system being applied to refrigerator
11 mechanical type switching switches
111 handover modules
112 deformation mechanisms
12 sensing unit
13 comparing units
14 processing units
15 detector units
16 storage elements
2 refrigerators
21 chamber doors
22 compressors
S1 sensing signal
S2 the first comparison signal
S3 the second comparison signal
S4 detects signal
A low critical temperature set point
B high-critical temperature set point
C target temperature set point
D, E, F, G, H, I are interval
L change in location stroke
Detailed description of the invention
Due to the compressor variable frequency control system being applied to refrigerator provided by the present invention, a combination thereof embodiment is unequal to piece
Lift, therefore this is no longer going to repeat them, only enumerates a preferred embodiment and is illustrated.
See also Fig. 1 and Fig. 2, Fig. 1 and show the compressor variable frequency control being applied to refrigerator of present pre-ferred embodiments
The systematic square frame schematic diagram of system processed, Fig. 2 shows the schematic diagram of the mechanical type switching switch of present pre-ferred embodiments.As schemed
Showing, the compressor variable frequency control system 1 being applied to refrigerator provided by the present invention is to be arranged at refrigerator 2, refrigerator 2 be provided with to
Few chamber door 21 and compressor 22, say, that refrigerator 2 can be two gate-type refrigerators, three gate-type refrigerators or other have more
The refrigerator of chamber door, and compressor 22 can be such as positive displacement compressor or aerodynamic force formula compressor, it is regarding actual application
Depending on design.
The compressor variable frequency control system 1 being applied to refrigerator comprises mechanical type switching switch 11, sensing unit 12,
Comparing unit 13, one processing unit 14, detector unit 15 and a storage element 16.Mechanical type switching switch 11 is by temperature
Memorial alloy is formed, and this temperature memory alloy is existing technology, is the most no longer repeated, and in other embodiments
In, mechanical type switching switch 11 can be switched by the switching of other classes and be formed.
Specifically, mechanical type switching switch 11 is mainly made up of with deformation mechanism 112 handover module 111, switches mould
Having a change in location stroke L on block 111, it (can be such as-18 that change in location stroke L is provided with a low critical temperature set point A
DEG C) with a high-critical temperature set point B (such as can be 20 DEG C), and low critical temperature set point A is less than high-critical temperature and sets
Fixed point B, and deformation mechanism 112 is above-mentioned memorial alloy, its metal or non-mainly differed by two kinds of coefficients of expansion
Metal is formed.
It addition, be further provided with a target temperature set point C in change in location stroke L, target temperature set point C is in low facing
Between boundary temperature set-point A and high-critical temperature set point B, this is typically the temperature specified by user, for user
Determine the temperature inside the box value, and in other embodiments, target temperature set point C can be that low critical temperature set point A or high is critical
Temperature set-point B.
Sensing unit 12 is electrically coupled to compressor 22, its e.g. time sensor, and sensing unit 12 is to feel
One first run down time of measured compressed machine 22 (will under illustrate).
Comparing unit 13 is electrically coupled to mechanical type switching switch 11 and sensing unit 12, and is provided with one second stopping
The duration of runs (will under illustrate again).Additionally, sensing unit 12 sets with the high-critical temperature on above-mentioned handover module 111
Fixed point B is connected, and compares with the triggering comparing unit 13 when mechanical type switching switch 11 switches to high-critical temperature set point B
Relatively, and comparing unit 13 such as can be made up of comparator or other processors with comparing function, and it is to regard reality to answer
Depending on situation with design.
Processing unit 14 is electrically coupled to mechanical type switching switch 11, comparing unit 13 and compressor 22, and is provided with one
First operating frequency correction table (referring to table one) and one second operating frequency correction table (referring to table two), the first operating frequency
Rate correction table comprises time difference and at least one first correction frequency of the first run down time and the second run down time
Corresponding relation, specifically, as shown in Table 1, Δ T refer to the first run down time and the second run down time time
Between difference (that is the first run down time deducts the second run down time), and five first correction frequencies correspondences i.e. respectively
In different Δ T.
It addition, the most as shown in Table 1, if if Δ T represents with natural number N, i.e. meet have " > N ", " N～2N ", " N～-
N ", "-N～-2N ", the interval of " <-2N ", and correspond respectively to the first correction frequency (representing with natural number f) "-2f ", "-f ", "
0 ", " f ", " 2f ", wherein natural number N, f is 5, but is not limited to this in other embodiments.
Table one
Second operating frequency correction table be comprise door opening times with at least one second mend the second operating frequency correction table be bag
Containing the corresponding relation of door opening times with at least one second correction frequency, specifically, as shown in Table 2, door opening times refers to unit
Door opening times in time, inward swinging door in e.g. a hour several times or inward swinging door in a minute several times, it is to set depending on actual application
Depending on meter, present pre-ferred embodiments calculates in units of per hour, and three second correction frequencies i.e. correspond respectively to
Different door opening times.
Table two
| Door opening times | 3 | 2 | 1 |
| Second correction frequency | 10 | 6 | 0 |
It addition, in other embodiments, processing unit 14 can be provided with opening time length corresponding to the 3rd correction frequency
The 3rd operating frequency correction table, therefore actual application is upper can make corrections there to be multi-frequency in the way of.And need one to carry at this
It is that the first above-mentioned operating frequency correction table and the second operating frequency correction table can be obtained by realistic simulation interlock circuit, or
Deduced by the formula of empirical law and obtain, and then be built among processing unit 14.Additionally, processing unit 14 can be such as central authorities
Processor (Central Processing Unit, CPU), graphic process unit (Graphic Processing Unit, GPU) or
OverDrive Processor ODP (Accelerated Processing Unit, ACU), but be alternatively other and possess the place performing disposal ability
Reason device, is therefore not limited to this.
Detector unit 15 is electrically coupled to compressor 22, processing unit 14 and chamber door 21, and detector unit 15 can be such as
Position sensor, infrared sensor or other kinds of sensor, as long as the sensor of chamber door 21 variation can be sensed, all may be used
Detector unit 15 as present pre-ferred embodiments.
Storage element 16 is electrically coupled to sense unit 12, comparing unit 13 and detector unit 15, and storage element
16 can be by erasable regulating type read-only memory (Erasable Programmable Read Only Memory, EPROM) with fast
Dodge non-volatility memory (Non-Volatile Memory, the NVRAM) composition of memory body, but do not limit
In this.
See also the first waveform schematic diagram that Fig. 1 to Fig. 4, Fig. 3 show the VFC of present pre-ferred embodiments,
Fig. 4 shows the second waveform diagram of the VFC of present pre-ferred embodiments.As shown in Figure 3 and Figure 4, in interval D, machine
Tool formula switching switch 11 is when compressor 22 operates with one first operating frequency (Fig. 4 is as 27rps), in change in location stroke
Gradually (compressor 22 can make the temperature in case reduce when running, and mechanical type switches to switch to low critical temperature set point A on L
Switch 11 deflection the most gradually), and then trigger processing unit 14 and control compressor 22 and shut down and enter interval E.
In interval E, when compressor 22 shuts down, on change in location stroke L, gradually switch to high-critical temperature set
Fixed point B (compressor 22 can make the temperature in case raise when running, forces mechanical type switching switch 11 deflection the most gradually).
Wherein, it is the second run down time (i.e. T2-T1) defined in present pre-ferred embodiments at interval E,
This second run down time can first be stored in storage element 16 and comparing unit 13, and this second run down time is
When interval E, sensing unit 12 sense and obtain, and in the way of sending out sensing signal, be sent to comparing unit 13；Equally
Ground, when interval D, sensing unit 12 also can sense the duration of runs of compressor 22.
When mechanical type switching switch 11 switches to high-critical temperature set point B, processing unit 14 can be triggered again and control pressure
Contracting machine 22 operates (now entering interval F) again, and when mechanical type switching switch 11 switches to low critical temperature set point A,
Shut down once again and enter interval G, wherein, by the time less than the interval E time of in Fig. 3 it is evident that interval G, and district
Between time of G be the first run down time defined in present pre-ferred embodiments, and sensing unit 12 can be by sensing signal
S1 is sent to comparing unit 13.Additionally, interval G is due to peripheral environment rapid increase, and detector unit 15 is within the unit interval
(present pre-ferred embodiments is as a example by three times, and can refer to the first run down time in the unit interval door to have been detected out repeatedly
The number of times of interior door 21 of unpacking), therefore temperature can be caused to rise suddenly and cause being rapidly achieved high-critical temperature set point B, and then make place
Reason unit 14 controls compressor 22 once again and operates and enter interval H.
And need one to be mentioned that at this, before entering interval H, (switch to high-critical temperature at mechanical type switching switch 11
During set point B), comparing unit 13 receives sensing signal S1 can compare the first run down time and the second run down time
Size (that is comparing the size of T2-T1 Yu T4-T3), according to this at the first run down time (T4-T3) more than the second stopping fortune
When turning time (T2-T1) and the first run down time (T4-T3) less than this second run down time (T2-T1), produce respectively
Give birth to and send out one first comparison signal S2 and one second comparison signal S3, wherein, owing to the time more interval E of interval G is little,
Therefore comparing unit 13 can send out the first comparison signal S2, and this first comparison signal S2 is to have actual time difference
Value, in present pre-ferred embodiments, time difference is for-10 minutes (being only for example).
Now, processing unit 14 can receive the first comparison signal S2 and make corrections according to the first of the first operating frequency correction table
Frequency and control compressor 22 with more than the first operating frequency one second operating frequency operating, specifically, due to above-mentioned
Time difference is to be 3 times for the door opening times in-10 minutes and unit interval, and therefore processing unit 14 is i.e. according to the first operating frequency
Rate correction table and the second operating frequency correction table find out corresponding first correction frequency and the second correction frequency, wherein,
In compressor field, it is typically all using rotating speed per second as frequency (that is Revolutions Per Second, RPS), below
Narration all using RPS as the unit of frequency, and at this in citing, the first correction frequency is for 5rps, and second frequency that makes corrections is
For 10rps, and final correction frequency is 15rps, and therefore the second operating frequency is initial frequency (27rps) plus
Whole correction frequency (15rps) so that processing unit 14 sends out control signal (not shown) and controls compressor 22 raising frequency fortune
Turn, and then enter interval H.
It addition, above-mentioned needs one are mentioned that, detector unit 15, when detecting that chamber door 21 is opened, can produce and send out one
Detection signal S4 so that processing unit 14 can learn door opening times.Additionally, storage element 16 can receive above-mentioned sensing signal S1
With detection signal S4, and then store the first run down time, the second run down time and door opening times.
Similarly, when mechanical type switching switch 11 switches to low critical temperature set point A, i.e. trigger processing unit 14 and control
Compressor 22 processed shuts down and enters interval I, and now senses unit 12 and can sense compressor 22 in interval I and shut down
Time (is this time defined as the first run down time, interval G is then defined as the second run down time), due to detector unit
15 have detected out secondary door within the unit interval, and the time difference of first duration of runs and second duration of runs also falls-5
～between 5 (now comparing unit 13 is to send out the second comparison signal S3), therefore processing unit 14 is according to the first operating frequency
Correction table and the second operating frequency correction table find out the first corresponding correction frequency and the second correction frequency, and illustrate at this
In, the first correction frequency is for 0rps, and the second correction frequency is for 6rps, and final correction frequency is 6rps, therefore the
Two operating frequencys are initial frequency (42rps) plus final correction frequency (6rps) so that processing unit 14 sends out
Control signal (not shown) and control compressor 22 and continue raising frequency operating, and then it is interval to enter next.
Certainly, may there be the result of frequency reducing in next interval, and it is regarding first duration of runs and second duration of runs
Time difference and door opening times determined, present pre-ferred embodiments, the most all as a example by raising frequency, in other embodiments may be used
Energy frequency reducing completely, it is also possible to raising frequency in an interval, frequency reducing in an interval, say, that processing unit 14 receives first
Comparison signal S2 and the second comparison signal S3, controls according to the first correction frequency of the first operating frequency correction table the most respectively
Compressor 22 operates with the one second operating frequency raising frequency more than the first operating frequency, and with less than the one of the first operating frequency
3rd operating frequency frequency reducing operating, chats bright hereby.
During it addition, the first run down time and the second run down time are equal, the most as shown in Table 1, it is not required to appoint
What correction, therefore need not further frequency conversion.And need one to be mentioned that at this, in other embodiments, can the most only consider
First run down time and the second run down time, without considering door opening times, it is regarding actual application feature
Fixed.
Comprehensive the above, after have employed the compressor variable frequency control system being applied to refrigerator provided by the present invention,
Owing to not using temperature-sensitive sticker can carry out frequency conversion, therefore can really reduce the cost of manufacture of refrigerator.Additionally, due to not with temperature
Degree is for according to carrying out frequency conversion, promoting the efficiency of frequency conversion thus without error.
Certainly, the present invention also can have other various embodiments, in the case of without departing substantially from present invention spirit and essence thereof, ripe
Know those skilled in the art to work as and can make various corresponding change and deformation according to the present invention, but these change accordingly and become
Shape all should belong to the protection domain of appended claims of the invention.
Claims (7)
1. being applied to a compressor variable frequency control system for refrigerator, in order to be arranged at this refrigerator, this refrigerator is provided with at least one case
Men Yuyi compressor, it is characterised in that this compressor variable frequency control system being applied to refrigerator comprises:
One mechanical type switching switch, has a change in location stroke, and this change in location stroke is provided with a low critical temperature and sets
Point and a high-critical temperature set point, when making this compressor with one first operating frequency operating, on this change in location stroke gradually
Gradually switch to this low critical temperature set point, and when this compressor shuts down, gradually switch on this change in location stroke
To this high-critical temperature set point；
One sensing unit, is electrically connected at this compressor, shuts down in order to sense one first when this compressor shuts down
Time, use generation and send out a sensing signal；
One comparing unit, is electrically connected at this mechanical type switching switch and this sensing unit, and is provided with one second and shuts down
Time, in order to receive this sensing signal, make this mechanical type switching switch when switching to this high-critical temperature set point, compare this
The size of one run down time and this second run down time, second stops more than this at this first run down time according to this
When only the duration of runs is less than this second run down time with this first run down time, produces respectively and send out one first
Comparison signal and one second comparison signal；And
One processing unit, is electrically connected at this mechanical type switching switch, this comparing unit and this compressor, and is provided with one first fortune
Turning frequency correction table, this first operating frequency correction table comprises this first run down time and this second run down time
One time difference and the corresponding relation of at least one first correction frequency, this processing unit is in order to receive this first comparison signal and to be somebody's turn to do
Second comparison signal, the most respectively according to this first operating frequency correction table this first correction frequency and control this compressor with
More than one second operating frequency raising frequency operating of this first operating frequency, and with one the 3rd fortune less than this first operating frequency
Turning frequency down operating, this second operating frequency and the 3rd operating frequency are by this first operating frequency and this first correction frequency
Rate sum is determined；
Wherein, in this first operating frequency correction table, this time difference is defined as Δ T, is positioned at N to-N at this time difference Δ T
Interval time, this first correction frequency be 0；When this time difference Δ T is positioned at N to 2N interval, this first correction frequency is-
f；When this time difference Δ T is more than 2N, this first correction frequency is-2f；The district of-N to-2N it is positioned at this time difference Δ T
Between time, this first correction frequency be f；When this time difference Δ T is less than-2N, this first correction frequency is 2f, and above-mentioned N and f
For natural number, this time difference Δ T is to be divided into unit, and N is to be divided into unit, and f is in units of rps.
The compressor variable frequency control system being applied to refrigerator the most according to claim 1, it is characterised in that further include an inspection
Surveying unit, this detector unit is electrically connected at this compressor, this processing unit and this chamber door, in order to shut down at this compressor
Time, detection is opened a door opening times of this chamber door, is used generation and send out a detection signal, manages unit in this place and receive this inspection
After surveying signal, control this first operating frequency of this compressor according to this detection signal.
The compressor variable frequency control system being applied to refrigerator the most according to claim 2, it is characterised in that further include a storage
Memory cell, this storage element is electrically connected at this sensing unit, this comparing unit and this detector unit, in order to receive this sensing
Signal and this detection signal, use this first run down time of storage, this second run down time and this enabling time
Number.
The compressor variable frequency control system being applied to refrigerator the most according to claim 1, it is characterised in that this mechanical type is cut
Change switch to be made up of temperature memory alloy.
The compressor variable frequency control system being applied to refrigerator the most according to claim 1, it is characterised in that this change in location
Being further provided with a target temperature set point in stroke, it is critical with this height that this target temperature set point is positioned at this low critical temperature set point
Between temperature set-point.
The compressor variable frequency control system being applied to refrigerator the most according to claim 1, it is characterised in that this processing unit
It is electrically connected at this compressor and this mechanical type switching switch, in order to switch to this low stagnation temperature at this mechanical type switching switch
During degree set point, control this compressor and shut down.
The compressor variable frequency control system being applied to refrigerator the most according to claim 1, it is characterised in that above-mentioned N's Yu f
Value is 5.
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| CN201410140755.1A CN104976108B (en) | 2014-04-09 | 2014-04-09 | It is applied to the compressor variable frequency control system of refrigerator |
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| CN201410140755.1A CN104976108B (en) | 2014-04-09 | 2014-04-09 | It is applied to the compressor variable frequency control system of refrigerator |
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| CN105573217A (en) * | 2016-02-01 | 2016-05-11 | 澳柯玛股份有限公司 | Cold chain display cabinet with door switch control system and control method of cold chain display cabinet |
| CN105928316B (en) * | 2016-04-29 | 2019-01-29 | 合肥华凌股份有限公司 | A kind of frequency-changeable compressor control method, control system and refrigerator |
| CN113915938B (en) * | 2021-02-24 | 2023-06-23 | 海信冰箱有限公司 | Refrigerator and control method thereof |
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| JPS6273068A (en) * | 1985-09-25 | 1987-04-03 | 株式会社日立製作所 | Method of controlling refrigerator |
| JP3320082B2 (en) * | 1991-05-13 | 2002-09-03 | 三菱電機株式会社 | Refrigerator control device |
| KR100474329B1 (en) * | 2002-05-07 | 2005-03-08 | 엘지전자 주식회사 | Compressor driving control method of refrigerator |
| CN2613736Y (en) * | 2002-09-06 | 2004-04-28 | 海尔集团公司 | Frequency-change refrigerator capable of selecting time to reduce noise |
| CN101615877A (en) * | 2008-06-26 | 2009-12-30 | 上海日立电器有限公司 | A kind of driving device of direct current frequency conversion refrigerator |
| CN201416980Y (en) * | 2009-03-16 | 2010-03-03 | 宁波德斯科电子科技有限公司 | Direct-current frequency-varying air-conditioning compressor intelligent controller and air-conditioner controlled by same |
| CN203071862U (en) * | 2013-02-05 | 2013-07-17 | 东元电机股份有限公司 | Frequency conversion adjusting and testing device and frequency conversion driving system thereof |
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2014
- 2014-04-09 CN CN201410140755.1A patent/CN104976108B/en active Active
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