CN1598457A - Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator - Google Patents
Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator Download PDFInfo
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- CN1598457A CN1598457A CN 200410035481 CN200410035481A CN1598457A CN 1598457 A CN1598457 A CN 1598457A CN 200410035481 CN200410035481 CN 200410035481 CN 200410035481 A CN200410035481 A CN 200410035481A CN 1598457 A CN1598457 A CN 1598457A
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Abstract
The invention relates to a control method for refrigerator, concretely, it relates to control method for a frequency variable refrigerator, the invention provides a method for time division work of freezing chamber and cold storage chamber in the process of temperature control, and through the cold quantity demands estimation, the frosting process includes the refrigerating process of the cold storage chamber. The variable frequency refrigerator includes: primary CPU, freezing chamber, cold storage chamber, temperature sensor, compressor, the invention introduces the concepts of temperature change rate and target approaching rate, the refrigerator can adjust the temperature change of the refrigerator according to the rate.
Description
Technical field
The present invention relates to a kind of control method of refrigerator, specifically, relate to a kind of control method of frequency conversion refrigerator.
Background technology
Wind cooling refrigerator of the prior art generally all comprises: host CPU, frequency-changeable compressor, temperature sensor or the like, refrigerator of the prior art all is to be detected by the temperature of temperature sensor to refrigerating chamber or refrigerating chamber, if the temperature of a chamber is lower than design temperature, it can be according to temperature extent control cooling, reach shutoff temperature, carry out defrost by heater.The temperature of each chamber of household electric refrigerator is different, and (most of the time of refrigerator work belongs to temperature retention time) each chamber is certain to the demand of cold during refrigerator insulation (holding temperature), and refrigerator of the prior art make full use of cold that the evaporimeter defrost need absorb be the refrigerating chamber refrigeration seldom, caused the waste of energy.
Summary of the invention
The invention provides a kind of in temperature controlled processes the method for refrigerating chamber and refrigerating chamber time-sharing work, and by the refrigeration requirement estimation, defrost process is comprised control method in the refrigerating chamber process of refrigerastion into.
Technical scheme of the present invention is such: 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, and it comprises the following steps:
One, energising is to each parameter initialization of refrigerator;
Two, temperature sensor carries out temperature detection to each chamber of refrigerator;
Three, detect whether signal compressor is arranged out,, then get back to step 2 if do not have; If have, then enter step 4;
Four, compressor start, and host CPU to detect be that the chamber requires start between which, if refrigerating chamber and refrigerating chamber require start simultaneously, then enter steps A; If refrigerating chamber requires start, then enter step B; If refrigerating chamber requires start, then enter step C:
The A step is as follows:
1. compressor runs up, and detects evaporator temperature and temperature of refrigerating chamber simultaneously, if evaporator temperature is not less than temperature of refrigerating chamber, then continues to detect; If evaporator temperature is lower than temperature of refrigerating chamber, the refrigerating chamber air door is opened, and refrigerating chamber fan low-speed running enters step 2 then;
2. temperature sensor detects the temperature of refrigerating chamber and evaporimeter, if the temperature of evaporimeter is not less than the temperature of refrigerating chamber, then continues to detect; If the temperature of evaporimeter is lower than the temperature of refrigerating chamber, then enter step 3;
3. the refrigerating chamber air door is opened, and the refrigeration fan rotates at a high speed, enters step 4 then;
4. temperature sensor detects temperature of refrigerating chamber and whether is lower than refrigerating chamber and shifts to an earlier date shutdown temperature, if be lower than, then closes the refrigeration air door, and blower fan shuts down, and enters step 6 then; If be not less than then enter step 5;
5. detect temperature of refrigerating chamber and whether be higher than the refrigerating chamber shutdown temperature, if high, then the refrigerating chamber air door is opened, and refrigerating chamber fan low speed rotation enters step 6 then; If not high, then enter step 6;
6. detect freezer temperature and whether be lower than the refrigerating chamber shutdown temperature,, then get back to step 4 if not low; If low, then enter step 7;
7. detect temperature of refrigerating chamber and whether be higher than refrigerating chamber and shift to an earlier date shutdown temperature, if high, compressor low-speed running then, the refrigeration air door is opened, and the refrigeration wind speed is low, gets back to step 7 then; If not high, then enter step 8;
8. host CPU control compressor stops, and refrigerating chamber wind speed height enters step 9 then;
9. whether temperature sensor detection evaporator temperature is higher than temperature of refrigerating chamber, if be higher than, then calculate the differential value of the difference of temperature of refrigerating chamber and refrigerating chamber shutdown temperature, regulating then makes the refrigerating chamber shutdown temperature equal the poor of former refrigerating chamber shutdown temperature and differential value, close the refrigeration air door at last, blower fan stops; If be not higher than, then enter step 10;
10. whether temperature sensor detection temperature of refrigerating chamber is lower than the refrigerating chamber shutdown temperature, if be not less than, then returns step 9; If be lower than, then host CPU control refrigeration air door closes, and the refrigeration blower fan stops, and starts the defrost heater, enters step 11 then;
Whether be higher than 1 11. detect evaporator temperature,, then get back to step 11 if be not higher than 1; If be higher than 1, then stop defrost, the refrigerating chamber new according to the defrost Time Calculation shifts to an earlier date shutdown temperature, gets back to step 1 then;
The B step is as follows:
Compressor runs up, and enters A step 2 and subsequent step then;
The C step is as follows:
1. host CPU control compressor low speed rotation carry out step 2 then;
2. whether temperature sensor detection evaporator temperature is lower than freezer temperature, if not low, then gets back to step 2; If be lower than, then host CPU is just controlled the refrigerating chamber air door and is opened, and refrigeration fan low speed rotation enters step 3 then;
3. whether temperature sensor detection freezer temperature is lower than the refrigerating chamber turn-on temperature, if be lower than, then the compressor high-speed cruising changes A step 3 and subsequent step then over to; If be not less than, then enter step 4;
4. whether temperature sensor detection temperature of refrigerating chamber is lower than the refrigerating chamber shutdown temperature, if be not less than, then gets back to step 3; If be lower than, then enter step 5;
5. detect freezer temperature and whether be lower than the refrigerating chamber shutdown temperature, if be not less than, then host CPU control refrigeration air door closes, the stall of refrigeration fan, and compressor rotates at a high speed then, changes A step 3 and subsequent step at last over to; If be lower than, then change step 8 and the subsequent step of A over to.
Control method of the present invention 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.
Description of drawings
Fig. 1 is a flow diagram of the present invention.
The specific embodiment
Referring to accompanying drawing; the flow process of control method of the present invention is such; switch on to refrigerator earlier; refrigerator carries out after the initialization; temperature sensor begins temperature detection is carried out in each chamber of refrigerator; detect whether have requirement open compressor between the chamber; if requirement is started shooting; just proceed temperature detection; if requirement is arranged starts shooting; host CPU is just controlled compressor and is opened; if refrigerating chamber and refrigerating chamber require to start shooting simultaneously; compressor just runs up; the simultaneous temperature sensor detects evaporator temperature TZ and whether is lower than temperature of refrigerating chamber TR; just continue to detect if be not less than; if be lower than; host CPU just control is opened the refrigerating chamber air door; refrigerating chamber fan low-speed running; the simultaneous temperature sensor detects evaporator temperature TZ and whether is lower than freezer temperature TF; be not less than and just continue to detect; if be lower than; host CPU is opened the air door of refrigerating chamber with regard to control; the refrigerating chamber fan runs up; whether temperature sensor detection temperature of refrigerating chamber TR is lower than refrigerating chamber shutdown temperature TRT then; if be lower than; the refrigerating chamber air door is closed; blower fan shuts down; if temperature of refrigerating chamber TR is not less than refrigerating chamber shutdown temperature TRT; whether just detecting temperature of refrigerating chamber TR again is higher than refrigerating chamber turn-on temperature TFK; if be higher than; the refrigerating chamber air door is opened; refrigerating chamber fan low-speed running; if be not higher than; temperature sensor just detects freezer temperature TF and whether is lower than refrigerating chamber shutdown temperature TFT; if be not less than; just go back to continue to detect temperature of refrigerating chamber TR and whether be lower than refrigerating chamber shutdown temperature TRT; if be lower than; whether temperature sensor is higher than refrigerating chamber with regard to continuation detection temperature of refrigerating chamber TR shifts to an earlier date shutdown temperature TRD; if be higher than; host CPU is just controlled the compressor low-speed running, and the refrigeration air door is opened, and the wind speed of refrigerating chamber is just low; if not being higher than refrigerating chamber, temperature of refrigerating chamber TR do not shift to an earlier date shutdown temperature TRF; host CPU is just controlled compressor and is stopped, and the wind speed of refrigerating chamber is just high, and temperature sensor detects evaporator temperature TZ and whether is higher than temperature of refrigerating chamber TR; if be not higher than; temperature sensor just detects temperature of refrigerating chamber TR and whether is lower than refrigerating chamber shutdown temperature TRT, is not less than, and just continues to detect evaporator temperature TZ and whether is higher than temperature of refrigerating chamber TR; if be lower than; host CPU is just controlled the refrigerating chamber air door and is closed, and blower fan stops, and starts defroster simultaneously and carries out defrost; whether detect evaporator temperature TZ again greater than 1; just continue to detect if be not more than 1, if, shift to an earlier date shutdown temperature TRD according to the new refrigerating chamber of defrost Time Calculation greater than just stopping defrost; get back to init state then and carry out temperature detection; if the temperature T Z of evaporimeter is higher than temperature of refrigerating chamber TR, host CPU just calculates the differential value between temperature of refrigerating chamber TR and the refrigerating chamber shutdown temperature TRT, regulates making the refrigerating chamber shutdown temperature equal the poor of former refrigerating chamber shutdown temperature and differential value then; close the refrigeration air door at last, blower fan stops.
If refrigerating chamber requires start, if compressor just runs up, just enter into refrigerating chamber and refrigerating chamber require simultaneously the to start shooting detection evaporator temperature TZ of step then and whether be lower than the step place of freezer temperature TF, remaining is identical with it.
If refrigerating chamber requires start; compressor is with regard to low-speed running; the simultaneous temperature sensor detects evaporator temperature TZ and whether is lower than temperature of refrigerating chamber TR; just continue to detect if be not less than; if being lower than the refrigerating chamber air door just opens; refrigerating chamber fan low-speed running; whether temperature sensor detection freezer temperature TF is lower than refrigerating chamber turn-on temperature TFK then; if being lower than compressor just runs up; the refrigerating chamber air door is opened the refrigerating chamber fan and is run up then; all the other require the step of starting shooting simultaneously with refrigerating chamber and refrigerating chamber; if freezer temperature TF is not less than refrigerating chamber turn-on temperature TFK; temperature sensor continues to detect temperature of refrigerating chamber TR and whether is lower than refrigerating chamber shutdown temperature TRT; if be not less than to come back to and detect the detection step whether freezer temperature TF is lower than refrigerating chamber turn-on temperature TFK; if temperature of refrigerating chamber TR is lower than refrigerating chamber shutdown temperature TRT; temperature sensor just detects freezer temperature TF and whether is lower than refrigerating chamber shutdown temperature TFT; if being not less than the refrigerating chamber air door closes blower fan and stops; compressor runs up; the refrigerating chamber air door is opened then; the refrigerating chamber fan runs up; all the other require the step of starting shooting simultaneously with refrigerating chamber and refrigerating chamber; if freezer temperature TF is lower than refrigerating chamber shutdown temperature TFT; compressor stops; refrigerating chamber wind speed height, all the other are not higher than the subsequent step that refrigerating chamber shifts to an earlier date shutdown temperature TRD with refrigerating chamber and the refrigerating chamber temperature of refrigerating chamber TR that requires simultaneously to start shooting.
The accurate time-sharing work method of refrigerator of the present invention is calculated the refrigerating capacity that each chamber needs by the average method of periodic sampling.For wind cooling refrigerator, behind the compressor start, evaporimeter is different in the temperature in each stage, by controlling the air door of each chamber, can make that the different temperatures scope of evaporimeter makes that different temperatures requires between the chamber cooling.Giving the refrigerating chamber cool room separately, compressor operating is at lower-speed state; After the compressor shutdown, utilize temperature of refrigerating chamber to be higher than the condition of 0 degree, strengthen the refrigerating chamber wind speed, when continuing, give the evaporimeter defrost, give chill box damping simultaneously, improve the freshness of food to the refrigerating chamber cooling.When the defrost condition reaches in process of refrigerastion, also can by stop utilizing behind the compressor refrigerating chamber 0 on the high speed winds defrost.
Controlling method for refrigerator of the present invention has been introduced the notion of the rate of temperature change and the target degree of approach, can be divided into the timesharing control under the following different situations, and this timesharing control can make refrigerator arrive the temperature value that will keep quick, accurate, energy-conservationly:
1, normal temperature control
If the temperature difference is very big, the compressor high-speed cruising, make food cool to humidity province rapidly,, adjust compressor speed and make the soft target temperature that reaches exactly of each room temperature degree then according to each each speed of room temperature degree rate of change near target temperature near target temperature.
2, abnormal temperature control
If adhere to that rising rate unusual (putting hot food into) to temperature can start immediately, and the temperature rise that food is brought according to inhibition temperature rise situation adjusting rotating speed is suppressed.
3, the control of the defrost in the compressor operating process
During normal the operation, can regulate compressor rotary speed, change wind flow simultaneously according to frost layer situation, so that frosting alleviates, when evaporator temperature is lower than freezer temperature, close the refrigerating chamber air door, strengthen the refrigerating chamber air quantity, utilize refrigerating chamber than warm air so that the evaporimeter defrost.
4, defrost control in the compressor shutdown process
At normal start-stop in the cycle; preferentially make refrigerating chamber reach cut-off condition; according to temperature of refrigerating chamber rate of descent control compressor rotary speed up to compressor shutdown, but the refrigerating chamber blower fan do not stop to utilize equally refrigerating chamber make the evaporimeter defrost than warm air, the white gas of quilt can be refrigerating chamber simultaneously increases humidity.
5, conventional heater defrost control
Defrosting heater does not only reach in above-mentioned measure and just uses when defrost or refrigeration require, to improve refrigerating efficiency.
This patent is emphasized wind cooling refrigerator refrigerating chamber and refrigerating chamber time-sharing work during keeping temperature, and during the refrigerating chamber refrigeration, because refrigerating chamber humidity is low, evaporimeter is difficult for frosting, improves refrigerating efficiency; During the refrigerating chamber refrigeration, the easy frosting of evaporimeter, but temperature of refrigerating chamber height, can reduce compressor refrigerating capacity alleviates frosting on the one hand, and by the estimation of refrigerating chamber refrigeration requirement, the cold that can utilize the evaporimeter defrost to produce is lowered the temperature to refrigerating chamber on the other hand, that is to say without heater and give the evaporimeter defrost, but the wind that utilizes refrigerating chamber to be higher than 0 degree is given the evaporimeter defrost, does not only energy savings like this, and can give chill box damping.
Claims (1)
1, a kind of control method of frequency conversion wind cooling refrigerator time-sharing work, frequency conversion refrigerator comprises: host CPU, refrigerating chamber, refrigerating chamber, temperature sensor, compressor or the like, it is characterized in that: refrigerating chamber and refrigerating chamber time-sharing work in temperature controlled processes, and estimate by refrigeration requirement, defrost process is comprised in the refrigerating chamber process of refrigerastion, and it comprises the following steps:
One, energising is to each parameter initialization of refrigerator;
Two, temperature sensor carries out temperature detection to each chamber of refrigerator;
Three, detect whether signal compressor is arranged out,, then get back to step 2 if do not have; If have, then enter step 4;
Four, compressor start, and host CPU to detect be that the chamber requires start between which, if refrigerating chamber and refrigerating chamber require start simultaneously, then enter steps A; If refrigerating chamber requires start, then enter step B; If refrigerating chamber requires start, then enter step C:
The A step is as follows:
1. compressor runs up, and detects evaporator temperature and temperature of refrigerating chamber simultaneously, if evaporator temperature is not less than temperature of refrigerating chamber, then continues to detect; If evaporator temperature is lower than temperature of refrigerating chamber, the refrigerating chamber air door is opened, and refrigerating chamber fan low-speed running enters step 2 then;
2. temperature sensor detects the temperature of refrigerating chamber and evaporimeter, if the temperature of evaporimeter is not less than the temperature of refrigerating chamber, then continues to detect; If the temperature of evaporimeter is lower than the temperature of refrigerating chamber, then enter step 3;
3. the refrigerating chamber air door is opened, and the refrigeration fan rotates at a high speed, enters step 4 then;
4. temperature sensor detects temperature of refrigerating chamber and whether is lower than refrigerating chamber and shifts to an earlier date shutdown temperature, if be lower than, then closes the refrigeration air door, and blower fan shuts down, and enters step 6 then; If be not less than then enter step 5;
5. detect temperature of refrigerating chamber and whether be higher than the refrigerating chamber shutdown temperature, if high, then the refrigerating chamber air door is opened, and refrigerating chamber fan low speed rotation enters step 6 then; If not high, then enter step 6;
6. detect freezer temperature and whether be lower than the refrigerating chamber shutdown temperature,, then get back to step 4 if not low; If low, then enter step 7;
7. detect temperature of refrigerating chamber and whether be higher than refrigerating chamber and shift to an earlier date shutdown temperature, if high, compressor low-speed running then, the refrigeration air door is opened, and the refrigeration wind speed is low, gets back to step 7 then; If not high, then enter step 8;
8. host CPU control compressor stops, and refrigerating chamber wind speed height enters step 9 then;
9. whether temperature sensor detection evaporator temperature is higher than temperature of refrigerating chamber, if be higher than, then calculate the differential value of the difference of temperature of refrigerating chamber and refrigerating chamber shutdown temperature, regulating then makes the refrigerating chamber shutdown temperature equal the poor of former refrigerating chamber shutdown temperature and differential value, close the refrigeration air door at last, blower fan stops; If be not higher than, then enter step 10;
10. whether temperature sensor detection temperature of refrigerating chamber is lower than the refrigerating chamber shutdown temperature, if be not less than, then returns step 9; If be lower than, then host CPU control refrigeration air door closes, and the refrigeration blower fan stops, and starts the defrost heater, enters step 11 then;
Whether be higher than 1 11. detect evaporator temperature,, then get back to step 11 if be not higher than 1; If be higher than 1, then stop defrost, the refrigerating chamber new according to the defrost Time Calculation shifts to an earlier date shutdown temperature, gets back to step 2 then;
The B step is as follows:
Compressor runs up, and enters A step 2 and subsequent step then;
The C step is as follows:
1. host CPU control compressor low speed rotation carry out step 2 then;
2. whether temperature sensor detection evaporator temperature is lower than freezer temperature, if not low, then gets back to step 2; If be lower than, then host CPU is just controlled the refrigerating chamber air door and is opened, and refrigeration fan low speed rotation enters step 3 then;
3. whether temperature sensor detection freezer temperature is lower than the refrigerating chamber turn-on temperature, if be lower than, then the compressor high-speed cruising changes A step 3 and subsequent step then over to; If be not less than, then enter step 4;
4. whether temperature sensor detection temperature of refrigerating chamber is lower than the refrigerating chamber shutdown temperature, if be not less than, then gets back to step 3; If be lower than, then enter step 5;
5. detect freezer temperature and whether be lower than the refrigerating chamber shutdown temperature, if be not less than, then host CPU control refrigeration air door closes, the stall of refrigeration fan, and compressor rotates at a high speed then, changes A step 3 and subsequent step at last over to; If be lower than, then change A step 8 and subsequent step over to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410035481 CN1273791C (en) | 2004-07-30 | 2004-07-30 | Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator |
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| CN 200410035481 CN1273791C (en) | 2004-07-30 | 2004-07-30 | Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator |
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| CN1598457A true CN1598457A (en) | 2005-03-23 |
| CN1273791C CN1273791C (en) | 2006-09-06 |
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