CN101545706A - Method for controlling frequency conversion of frequency conversion refrigerator - Google Patents
Method for controlling frequency conversion of frequency conversion refrigerator Download PDFInfo
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- CN101545706A CN101545706A CN200810084454A CN200810084454A CN101545706A CN 101545706 A CN101545706 A CN 101545706A CN 200810084454 A CN200810084454 A CN 200810084454A CN 200810084454 A CN200810084454 A CN 200810084454A CN 101545706 A CN101545706 A CN 101545706A
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- compressor
- frequency conversion
- temperature
- refrigerator
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Abstract
The invention discloses a method for controlling frequency conversion of a frequency conversion refrigerator. The frequency conversion refrigerator comprises a main control panel, a freezing sensor and a compressor; the method comprises the following steps that: firstly, the compressor starts up; before that, the compressor is inactive, and three reasons cause the shutoff: non-electrification, energy-saving shutoff and shutoff in defrosting stage; therefore, when the compressor starts up, the main control panel judges whether the compressor is started after power off and electrification, after energy-saving shutoff in operation or after defrosting; and according to different situations, the compressor enters different control steps. The frequency conversion technology fully realizes the accurate control of the temperature of the refrigerator, improves the fresh-keeping function of food and greatly reduces the power consumption of the refrigerator; the method also effectively reduces noise; and in particular, the refrigerator can automatically find the lowest rotating speed in operation at nighttime so as to achieve the effect of reducing noise.
Description
Technical field
The present invention relates to a kind of control method of refrigerator, especially a kind of method for controlling frequency conversion of frequency conversion refrigerator.
Background technology
Refrigerator is as using the household electrical appliance of comparatively popularizing, in recent years along with the development of microelectric technique, sensor technology and control theory, it presents trend of rapid development, refrigerator develops towards big capacity, direction multi-functional, floride-free, energy-conservation, intelligent, hommization, and therefore traditional mechanical type, the Electronic Control of egg are difficult to satisfy the demand for development of modern refrigerator.Refrigerator generally is provided with refrigerating chamber and refrigerating chamber; The temperature of refrigerating chamber is :-16 ℃～-24 ℃.The temperature of refrigerating chamber is at 2 ℃～8 ℃.
The main task of refrigerator control is exactly the optimum temperature that keeps food in the case, reaches the purpose of food fresh keeping.Because temperature is influenced by multiple uncertain factor in the refrigerator, as put into the quantity of food temperature, thermal capacity and the article of refrigerator, the factor affecting such as frequent degree of opening the door, therefore the temperature in the refrigerator can't realize accurately control with traditional control method, adopt fuzzy control technology just can improve control accuracy easily, being equipped with electron temperature detects, duty to compressor is mediated, and reaches the purpose of accurate control.
Frequency conversion refrigerator of the prior art generally all comprises: host CPU, frequency-changeable compressor, temperature sensor or the like, detect by the temperature of temperature sensor refrigerating chamber or refrigerating chamber, if, between the temperature of chamber be lower than design temperature, it can be according to the output of temperature extent control cold, like this, though saved the energy to a certain extent, but frequency conversion refrigerator in the prior art also can't be regulated temperature according to the rate of temperature change of each chamber of refrigerator owing to just carry out adjustment according to the size of each indoor temperature change generated in case.
Application number is that 200410035480.1 Chinese patent discloses and a kind ofly can regulate and have the control method of refrigerator of self-learning function according to the rate of temperature change of each chamber of refrigerator and the temperature to each chamber of refrigerator of the target degree of approach, having used each parameter of fuzzy clustering calculating correction in this method is self-learning function, according to the parameter of revising refrigerator being optimized control then is Self Adaptive Control, this control method has been introduced the notion of the rate of temperature change and the target degree of approach, and refrigerator can be regulated the variations in temperature of refrigerator according to rate of temperature change.This patent is only mentioned compressor and a blower fan at common frequency conversion wind cooling refrigerator in the patent, again in conjunction with the control mode of temperature sensor; Mainly emphasize " fuzzy clustering account form " and " according to rate of temperature change control " in the patent, it can not regulate indoor temperature accurately, can not be well energy-conservation.
Application number be 200410035481.6 Chinese patent disclose a kind of in temperature controlled processes the method for refrigerating chamber and refrigerating chamber time-sharing work, and estimate by refrigeration requirement, defrost process is comprised control method in the refrigerating chamber process of refrigerastion into, frequency conversion refrigerator comprises: host CPU, refrigerating chamber, refrigerating chamber, temperature sensor, compressor or the like, the method of refrigerating chamber and refrigerating chamber time-sharing work in keeping the temperature controlling process, and estimate by refrigeration requirement, defrost process is comprised control method in the refrigerating chamber process of refrigerastion into, this control method has been introduced the notion of the rate of temperature change and the target degree of approach, and refrigerator can be regulated the variations in temperature of refrigerator according to rate of temperature change.Patent " frequency conversion wind cooling refrigerator time-sharing work control method " has been mentioned refrigeration air door and freezing air door, mainly emphasizes " how refrigeration, freezing air door are in conjunction with press work " in the patent, does not reach the purpose of accurate control temperature.
Application number is that 200510044710.5 Chinese patent discloses a kind of frequency conversion refrigerator and control method thereof, its controller removes and connects traditional compressor in the refrigeration system, the chamber magnetic valve, beyond chamber temp sensor and the environment temperature sensor, also connect the condensation temperature sensor, power sensor and suction temperature sensor, like this in the control procedure to internal temperature of refrigerator, ambient temperature, condensation temperature, suction temperature, multi-aspect informations such as compressor horsepower are monitored, according to the comprehensively selected optimum working mode of monitored results, guaranteed that effectively refrigerator can keep the optimum Match state all the time under various working conditions.This patent is at the control mode of frequency conversion dual system or multisystem direct cooling refrigerator, claimed structure and control method more complicated.
In view of this special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, a kind of compressor start is provided after, can select rotating speed and rotating speed to change voluntarily voluntarily to reduce the method for controlling frequency conversion of frequency conversion refrigerator of noise.
For solving the problems of the technologies described above, the present invention adopts the basic design of technical scheme to be: a kind of method for controlling frequency conversion of frequency conversion refrigerator, and this refrigerator comprises: master control borad, freezing sensor, compressor is characterized in that: it comprises following job step:
A, beginning compressor start;
B, master control borad judge that whether compressor start is the startup after the energy-conservation shutdown, the startup after the defrost in the compressor start, work of outage back energising, if the compressor start of outage back energising, enter step c, if the startup in the work after the energy-conservation shutdown, enter step e, if the startup after the defrost enters step I;
C, master control borad are given signal compressor, with maximum square wave frequency A
1Hz moves continuously, enters steps d;
D, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step h, if not, continue with maximum square wave frequency A
1The Hz operation until shutdown, enters step h;
E, compressor are earlier with maximum square wave frequency A
1The Hz operation, duration t
0After, enter step f;
F, enter corresponding compressor rotary speed operation, enter step g according to shutdown point and freezing sensor actual temperature contrast relationship;
G, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step h, if not, continue operation with step f, until shutdown, enter step h;
H, stopped status, whether freezing sensor continuous detecting temperature surpasses energy efficiency temperature, if then enter step e;
Whether i, master control borad detect is to start after the preceding defrost of power consumption program, if, then enter step j, if not, step c then entered;
J, compressor are with square wave frequency A
2Hz moves continuously, enters step k;
K, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step 1, if not, continue operation with step j, until shutdown, enter step 1;
1, stopped status, whether freezing sensor continuous detecting temperature surpasses energy efficiency temperature, if then enter step m;
M, compressor are earlier with square wave frequency A
3Hz continuous operating time t
1After, again with A
4Hz continues operation, enters step n;
N, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step 1, if not, compressor continues with A
4The Hz operation until shutdown, enters step 1.
The time t that compressor moves earlier in the above-mentioned control method
0, t
1In, if the sensor detected temperatures in the energy efficiency temperature scope, compressor shutdown then continues to carry out according to corresponding step respectively then.
Compressor is a benchmark with freezing sensor actual temperature after entering corresponding compressor rotary speed operation according to shutdown point and freezing sensor actual temperature contrast relationship, if temperature raises 1 degree, rotating speed raises 1 grade, until maximum square wave frequency A
1Hz, 1 degree if temperature descends, 1 grade of rotating speed downward modulation is until minimum square wave frequency A
5Hz.
When described frequency conversion refrigerator was carried out freezing quick-frozen, rapid ice making, compressor rotary speed was maximum square wave frequency A
1Hz, this program is the override program.
Described compressor moves the t time continuously and after the continuous operation of a frequency reached for 50%～60% time, compressor rotary speed raised 1 grade, and detected temperatures is if enter the energy efficiency temperature scope; then shut down, if not, then continuing increases by 1 grade; until shutdown, enter step h, this program is a time preferential program.
After described compressor entered step h, the shutdown point during next compressor start was a benchmark to raise back final shutdown gear, if open the door or button, then this program control by-pass enters step e behind the parameter initialization.
Each parameter is corresponding with environment temperature in the described method for controlling frequency conversion.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect.
Frequency conversion refrigerator of the present invention adopts fuzzy method for controlling frequency conversion to effectively reduce noise, and particularly refrigerator can be sought minimum speed automatically when moving night, to reach the effect that reduces noise.And the existing method of operation is to move with a fixed rotating speed under the specific environment temperature, and noise can be relatively large.
Owing to adopted fuzzy control can effectively reduce energy consumption, compressor operating can be regulated rotating speed automatically according to current environment temperature and the temperature in the refrigerator, to reach the purpose that reduces power consumption, has more reduced by 5% energy consumption than existing energy-saving refrigerator.
In addition, this converter technique is abundant realizes the accurate control of refrigerator temperature, improves the fresh-keeping function of food, has significantly reduced the power consumption of refrigerator.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Description of drawings
Fig. 1 is the flow diagram of method for controlling frequency conversion of the present invention.
The specific embodiment
As shown in Figure 1, method for controlling frequency conversion of frequency conversion refrigerator of the present invention, this refrigerator comprises: master control borad, freezing sensor, compressor, it comprises following job step: compressor start at first, compressor stops before this, this stops to have three kinds of reasons, comprises, not energising, energy-conservation shutdown, defrost stage shut down; So behind compressor start, master control borad judges that whether compressor start is the startup after the energy-conservation shutdown, the startup after the defrost in the compressor start, work of outage back energising, according to different situations, enters different control steps.
If the compressor start of outage back energising, master control borad is given signal compressor, with maximum square wave frequency A
1Hz moves continuously, this moment freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if; in order to save power consumption; then shut down, if not, then continue with maximum square wave frequency A1Hz operation; until shutdown; in stopped status, whether freezing sensor detected temperatures surpasses energy efficiency temperature, and promptly whether indoor temperature rises; if then carry out according to the step after the following energy-conservation shutdown.
If the startup in the work after the energy-conservation shutdown, compressor is earlier with maximum square wave frequency A
1The Hz operation, duration t
0After, enter corresponding compressor rotary speed operation according to shutdown point and freezing sensor actual temperature contrast relationship, in this running, after entering corresponding compressor rotary speed operation according to shutdown point and freezing sensor actual temperature contrast relationship, with freezing sensor actual temperature is benchmark, if temperature raises 1 degree, rotating speed raises 1 grade, until maximum square wave frequency A
1Hz, 1 degree if temperature descends, 1 grade of rotating speed downward modulation is until minimum square wave frequency A
5Hz.In this process; whether freezing sensor continuous detecting temperature is in the energy efficiency temperature scope; if, then shut down, if not; continuation moves according to above-mentioned rule; until shutdown, in stopped status, whether freezing sensor continuous detecting temperature surpasses energy efficiency temperature; if then rerun according to this step.
If whether the startup after the defrost, at first needing master control borad to detect is to start after the preceding defrost of power consumption program, if not, then according to the step operation of switching on after the above-mentioned outage, if start after the defrost, then compressor is with square wave frequency A
2Hz moves first cycle continuously, and this process of shutdown of promptly starting shooting to after compressor restarts again, enters second cycle of operation, earlier with square wave frequency A
3Hz continuous operating time t
1After, again with A
4Hz continues operation, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, if not, compressor continues with A
4The Hz operation until shutdown, circulates repeatedly with second period.
In the step of above-mentioned three kinds of situations, if when frequency conversion refrigerator is carried out freezing quick-frozen, rapid ice making, then compressor rotary speed is maximum square wave frequency A
1Hz, this program is the override program.In addition, described compressor moves the t time continuously and after the continuous operation of a frequency reached for 50%～60% time, compressor rotary speed raised 1 grade; detected temperatures if enter the energy efficiency temperature scope, is then shut down; if not; then continue to increase by 1 grade, until shutdown, the shutdown point during next compressor start is a benchmark to raise the back gear that finally shuts down; if open the door or button; then this program control by-pass is carried out according to energy-conservation back reboot step behind the parameter initialization, and this program is a time preferential program.
In addition, each parameter is corresponding with environment temperature in the above-mentioned method for controlling frequency conversion.
Embodiment:
When 1, after energy conservation of compressor is shut down, restarting; compressor rotary speed is maximum speed 4500RPM (square wave frequency 155Hz); be 15 seconds running time, enters corresponding compressor rotary speed operation according to shutdown point and freezing sensor actual temperature contrast relationship then, is benchmark to enter freezing sensor actual temperature when normal operation; if temperature raises 1 degree; rotating speed raises 1 grade, until 155HZ, and 1 degree under the temperature; 1 grade of rotating speed downward modulation is until 65Hz.
First cycle after outage energising and the normal defrost is all with the 155Hz operation, up to shutdown.
2, in continuously operation 1 hour of compressor, and frequency continuously operation reach at 55% o'clock, rotating speed raises 1 grade automatically, until shutdown; When start next time enters the gear after the rise, if but middle the execution open the door or this operation square wave frequency of button (removing the distributor switch) back cancellation.
3, first cycle compressor that enters the preceding defrost of power consumption program moves with 110Hz, up to shutdown; Afterwards, start with 90Hz, the time is 5S at every turn, and running frequency is 53Hz, so according to circulating second round.
4, freezing quick-frozen, rapid ice making, compressor rotary speed are maximum speed 4500RPM (155Hz).
5, shut down
Above-mentioned each execution in step priority is: 4〉2〉1〉3〉5.
Frequency conversion refrigerator of the present invention adopts fuzzy method for controlling frequency conversion to effectively reduce noise, and particularly refrigerator can be sought minimum speed automatically when moving night, to reach the effect that reduces noise.And the existing method of operation is to move with a fixed rotating speed under the specific environment temperature, and noise can be relatively large.
Owing to adopted fuzzy control can effectively reduce energy consumption, compressor operating can be regulated rotating speed automatically according to current environment temperature and the temperature in the refrigerator, to reach the purpose that reduces power consumption, has more reduced by 5% energy consumption than existing energy-saving refrigerator.
In addition, this converter technique is abundant realizes the accurate control of refrigerator temperature, improves the fresh-keeping function of food, has significantly reduced the power consumption of refrigerator.
Claims (7)
1, a kind of method for controlling frequency conversion of frequency conversion refrigerator, this refrigerator comprises: master control borad, freezing sensor, compressor is characterized in that: it comprises following job step:
A, beginning compressor start;
B, master control borad judge that whether compressor start is the startup after the energy-conservation shutdown, the startup after the defrost in the compressor start, work of outage back energising, if the compressor start of outage back energising, enter step c, if the startup in the work after the energy-conservation shutdown, enter step e, if the startup after the defrost enters step I;
C, master control borad are given signal compressor, with maximum square wave frequency A
1Hz moves continuously, enters steps d;
D, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step h, if not, continue with maximum square wave frequency A
1The Hz operation until shutdown, enters step h;
E, compressor are earlier with maximum square wave frequency A
1The Hz operation, duration t
0After, enter step f;
F, enter corresponding compressor rotary speed operation, enter step g according to shutdown point and freezing sensor actual temperature contrast relationship;
G, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step h, if not, continue operation with step f, until shutdown, enter step h;
H, stopped status, whether freezing sensor continuous detecting temperature surpasses energy efficiency temperature, if then enter step e;
Whether i, master control borad detect is to start after the preceding defrost of power consumption program, if, then enter step j, if not, step c then entered;
J, compressor are with square wave frequency A
2Hz moves continuously, enters step k;
K, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step 1, if not, continue operation with step j, until shutdown, enter step 1;
L, stopped status, whether freezing sensor continuous detecting temperature surpasses energy efficiency temperature, if then enter step m;
M, compressor are earlier with square wave frequency A
3Hz continuous operating time t
1After, again with A
4Hz continues operation, enters step n;
N, freezing sensor continuous detecting temperature whether in the energy efficiency temperature scope, if, then shut down, enter step 1, if not, compressor continues with A
4The Hz operation until shutdown, enters step 1.
2, method for controlling frequency conversion of frequency conversion refrigerator according to claim 1, it is characterized in that: after compressor enters corresponding compressor rotary speed operation according to shutdown point and freezing sensor actual temperature contrast relationship, with freezing sensor actual temperature is benchmark, if temperature raises 1 degree, rotating speed raises 1 grade, until maximum square wave frequency A
1Hz, 1 degree if temperature descends, 1 grade of rotating speed downward modulation is until minimum square wave frequency A
5Hz.
3, method for controlling frequency conversion of frequency conversion refrigerator according to claim 1 is characterized in that: when described frequency conversion refrigerator was carried out freezing quick-frozen, rapid ice making, compressor rotary speed was maximum square wave frequency A
1Hz, this program is the override program.
4, method for controlling frequency conversion of frequency conversion refrigerator according to claim 1; it is characterized in that: described compressor moves the t time and continuously a frequency after continuously operation reached for 50%～60% time; compressor rotary speed raises 1 grade, and detected temperatures is if enter the energy efficiency temperature scope; then shut down; if not, then continuing increases by 1 grade, until shutdown; enter step h, this program is a time preferential program.
5, according to claim 1 or 4 described method for controlling frequency conversion of frequency conversion refrigerator, it is characterized in that: after described compressor enters step h, next time, the shutdown point during compressor start was a benchmark to raise the back gear that finally shuts down, if open the door or button, then this program control by-pass enters step e behind the parameter initialization.
6, method for controlling frequency conversion of frequency conversion refrigerator according to claim 1 is characterized in that: each parameter is corresponding with environment temperature in the described method for controlling frequency conversion.
7, method for controlling frequency conversion of frequency conversion refrigerator according to claim 1 is characterized in that: the time t that compressor moves earlier in the described control method
0, t
1In, if the sensor detected temperatures in the energy efficiency temperature scope, compressor shutdown then.
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|---|---|---|---|
| CN2008100844546A CN101545706B (en) | 2008-03-24 | 2008-03-24 | Method for controlling frequency conversion of frequency conversion refrigerator |
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|---|---|---|---|
| CN2008100844546A CN101545706B (en) | 2008-03-24 | 2008-03-24 | Method for controlling frequency conversion of frequency conversion refrigerator |
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| CN101545706B CN101545706B (en) | 2012-01-04 |
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