CN102109211A - Refrigeration dehumidifying device and control method thereof - Google Patents
Refrigeration dehumidifying device and control method thereof Download PDFInfo
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- CN102109211A CN102109211A CN2009101894284A CN200910189428A CN102109211A CN 102109211 A CN102109211 A CN 102109211A CN 2009101894284 A CN2009101894284 A CN 2009101894284A CN 200910189428 A CN200910189428 A CN 200910189428A CN 102109211 A CN102109211 A CN 102109211A
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Abstract
The invention relates to a refrigeration dehumidifying device. The device comprises a humidity sensor, a temperature sensor, an indoor unit fan, an indoor unit electromagnetic valve, an outdoor unit electromagnetic valve, an outdoor unit fan, a compressor and a control unit, wherein the control unit turns on the indoor unit fan, opens the indoor unit electromagnetic valve and the outdoor unit electromagnetic valve and starts the compressor when a humidity value measured by the humidity sensor is greater than the set humidity value and reaches a first threshold value, compares the temperature measured by the temperature sensor after the compressor is started for first time with the set temperature value, closes the outdoor unit electromagnetic valve, turns off the outdoor unit fan and opens the indoor unit electromagnetic valve when the measured temperature is lower than the set temperature, and closes the indoor unit electromagnetic valve, opens the outdoor unit electromagnetic valve and turns on the outdoor unit fan when the measured temperature is not lower than the set temperature. The invention also discloses a corresponding method. High-power parts are started in turn according to environment humidity and temperature, so that high current is prevented from being generated and impacting a power grid and the safety of equipment is greatly improved on the premise of ensuring a dehumidifying effect.
Description
Technical field
The present invention relates to the humidity regulation technical field, more specifically, relate to a kind of freeze drying device and control method.
Background technology
The freeze drying device is made up of compressor, heat exchanger, fan, water container, casing and controller etc., it with in the humid air suction machine, by heat exchanger, is condensed into the globule with airborne moisture content by fan, become outside the dry air discharge machine, so circulation reduces indoor humidity.Above-mentioned dehydrating unit is widely used in air-conditioning and the drying system, is to use maximum dehydrating units at present.
Yet, in above-mentioned dehydrating unit, have a plurality of high-power parts simultaneously, for example compressor, a plurality of fans etc.If these high-power parts are opened simultaneously, will produce big electric current, and electrical network will be produced impact, very easily damage equipment.
Summary of the invention
The technical problem to be solved in the present invention is, opens the problem of generation than the heavy current impact electrical network simultaneously at a plurality of high-power parts of above-mentioned dehumidifier, and a kind of freeze drying device and control method are provided.
The technical scheme that the present invention solves the problems of the technologies described above is, a kind of freeze drying device is provided, comprise humidity sensor, temperature sensor, indoor machine fan, the indoor set magnetic valve, the off-premises station magnetic valve, outdoor machine fan and compressor, it is characterized in that, also comprise control module, when reaching first threshold greater than the humidity value of setting, opens the humidity value that described control module records at humidity sensor indoor machine fan, the indoor set magnetic valve, off-premises station magnetic valve and compressor, and the C.T sensor records temperature and set temperature value after compressor start reaches the very first time, dynamo-electric magnet valve in dynamo-electric magnet valve and outdoor machine fan and the opening chamber outside the close chamber when recording temperature, otherwise dynamo-electric magnet valve and outdoor machine fan outside dynamo-electric magnet valve and the opening chamber in the close chamber less than design temperature.
In freeze drying device of the present invention, described control module judged whether compressor reached for second time apart from the time of cutting out last time before opening compressor, then opened compressor as if second time that reached, otherwise opened compressor after waiting for for second time.
In freeze drying device of the present invention, described control module is then closed indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor if record humidity less than setting humidity whether carrying out humidity that temperature judges that humidity sensor records after judging less than setting humidity.
The present invention also provides a kind of control method of freeze drying device, described freeze drying device comprises humidity sensor, temperature sensor, indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor, and this method may further comprise the steps:
A, judge whether the humidity value that humidity sensor records reaches first threshold greater than the humidity value of setting, if reach then execution in step b of first threshold;
B, unlatching indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve and compressor keep outdoor machine fan to close, and open outdoor machine fan after described compressor start reach the very first time;
C, C.T sensor record temperature and set temperature value, dynamo-electric magnet valve and outdoor machine fan outside the close chamber when recording temperature less than design temperature, otherwise dynamo-electric magnet valve in the close chamber.
In the control method of freeze drying device of the present invention, also comprise after the described step c:
D, judge that humidity that humidity sensor records whether less than setting humidity, then closes indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor if record humidity less than setting humidity.
In the control method of freeze drying device of the present invention, outside the close chamber of described step c, also comprise after dynamo-electric magnet valve and the outdoor machine fan: judge that temperature sensor records temperature and whether reaches second threshold value greater than set temperature value, if reach then execution in step b of second threshold value, otherwise execution in step d.
In the control method of freeze drying device of the present invention, in the close chamber of described step c, also comprise after the dynamo-electric magnet valve: judge that temperature sensor records temperature and whether reaches second threshold value less than set temperature value, if reach then execution in step b of second threshold value, otherwise execution in step d.
In the control method of freeze drying device of the present invention, described step b comprises judging whether compressor reached for second time apart from the time of cutting out last time, if reaching for second time then opens compressor, otherwise opens compressor after waiting for for second time.
In the control method of freeze drying device of the present invention; also comprise before the described step a and judge that each unit status is whether normally and at each parts execution in step a just often; otherwise the step of reporting to the police, described each unit status comprises that temperature sensor state, humidity sensor state, Compressor Discharge Pressure, compressor return air pressure overheat of compressor protective relay, compressor carry protective relay, indoor machine fan overheat protective relay, outdoor machine fan overheat protective relay and/or three-phase phase-sequence guard mode.
Freeze drying device of the present invention and control method are opened each high-power parts according to ambient humidity and temperature sequence, thereby under the prerequisite that guarantees effect on moisture extraction, have avoided generation heavy current impact electrical network, and the security of equipment is improved greatly.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of freeze drying device embodiment of the present invention;
Fig. 2 is the wiring schematic diagram of freeze drying device among Fig. 1;
Fig. 3 is the schematic flow sheet of the control method embodiment of freeze drying device of the present invention.
The specific embodiment
Freeze drying device of the present invention and control method are opened a plurality of high-power parts by order, cause the heavy current impact electrical network, the security that has greatly improved equipment thereby avoided opening simultaneously because of a plurality of high-power parts.The present invention mainly realizes by the PLC program with upper machine communication.
As shown in Figure 1, be the schematic diagram of freeze drying device embodiment of the present invention.This device comprises humidity sensor 15, temperature sensor 14, indoor machine fan 13, indoor set magnetic valve 12 (being used for the control room inner condenser), off-premises station magnetic valve 16 (being used for the control room external condenser), outdoor machine fan 17, compressor 18 and control module 11, and wherein humidity sensor 15, temperature sensor 14, indoor machine fan 13, indoor set magnetic valve 12, off-premises station magnetic valve 16, outdoor machine fan 17, compressor 18 are connected respectively to control module 11.In the present embodiment, control module 11 is a microprocessor, and operation has control program on it.
In the present embodiment, the humidity value that control module 11 records at humidity sensor 15 reaches first threshold (for example 5% greater than the humidity value of setting, this value can be set according to use occasion, usually drying is required high more occasion, this first threshold is more little) time open indoor machine fan 13, indoor set magnetic valve 12, off-premises station magnetic valve 16 and compressor 18, and C.T sensor 14 records temperature and set temperature value after compressor 18 startups reach the very first time (for example 10 seconds), dynamo-electric magnet valve 16 and outdoor machine fan 17 (dynamo-electric magnet valve 12 in the holding chamber outside the close chamber when recording temperature less than design temperature, indoor machine fan 13 and compressor 18 are opened), otherwise dynamo-electric magnet valve 12 (the outer dynamo-electric magnet valve 16 of holding chamber in the close chamber, outdoor machine fan 17, indoor machine fan 13 and compressor 18 are opened).
In addition, because of record temperature less than design temperature close chamber outside behind dynamo-electric magnet valve 16 and the outdoor machine fan 17, rise and surpass 2 ℃ of design temperatures if record temperature, then control module 11 close compressor 18 dynamo-electric magnet valve 16 outside the opening chamber simultaneously.
Because of record temperature greater than design temperature close chamber in behind the dynamo-electric magnet valve 12, descend and be lower than 2 ℃ of design temperatures if record temperature, then control module 11 close compressor 18 and outdoor machine fan 17 dynamo-electric magnet valve 12 in the opening chamber simultaneously.
In device operation a period of time of the present invention, after environment reaches humidity requirement, being control module 11 is judging that humidity that humidity sensor records is less than after setting humidity, be that all parts are in holding state, promptly close indoor machine fan 13, indoor set magnetic valve 12, off-premises station magnetic valve 16, outdoor machine fan 17 and compressor 18.
In order to protect compressor 18; can before opening compressor 18, judge whether this compressor 18 reaches second time (for example 3 minutes) apart from the time of cutting out last time; if second time that reached is then opened compressor 18 immediately, otherwise opens compressor 18 after waiting for for second time again.
As shown in Figure 2, be the wiring diagram of freeze drying device among Fig. 1.Number in the figure is as shown in the table:
| 52C1 | The compressor A.C. contactor | 51C1 | The compressor heat overload relay |
| 52C2 | The indoor machine fan A.C. contactor | 51C2 | The indoor machine fan thermal overload relay |
| 52C3 | The outdoor machine fan A.C. contactor | 51C3 | The off-premises station thermal overload relay |
| CM1 | Compressor electric motor | INT | The compressor protection module |
| CM2、3 | The indoor unit and outdoor unit motor | FU | Safety box |
| BS | Emergency stop switch |
As shown in Figure 3, be the flow chart of the control method embodiment of freeze drying device of the present invention.In the present embodiment, the freeze drying device comprises humidity sensor, temperature sensor, indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor, and this method may further comprise the steps:
Step S31: judge whether humidity value that humidity sensor records reaches first threshold (for example 5%) greater than the humidity value of setting, if reach then execution in step S32 of first threshold, whether reach first threshold greater than setting humidity otherwise continue to record humidity by humidity sensor measurement ambient humidity and judgement.
Step S32: open indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve and compressor, keep outdoor machine fan to close.
Step S33: reach the very first time (for example 10 seconds) back at compressor start and open outdoor machine fan.
Step S34: the C.T sensor records temperature and set temperature value, execution in step S36 when recording temperature greater than design temperature, otherwise execution in step S35.
Step S35: dynamo-electric magnet valve, indoor machine fan and compressor are opened in dynamo-electric magnet valve and the outdoor machine fan outside the close chamber, holding chamber.
Step S36: dynamo-electric magnet valve in the close chamber, the outer dynamo-electric magnet valve of holding chamber, outdoor machine fan, indoor machine fan and compressor are opened.
Step S37: judge that whether humidity that humidity sensor records is less than setting humidity, then make whole device be in holding state if record humidity less than setting humidity, promptly close indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor, return step S31 then; Otherwise return step S34.
In said method, after step S35, also can comprise: judge that temperature sensor records temperature and whether reaches second threshold value (for example 2 ℃) greater than set temperature value,, otherwise keep former running status if reach then execution in step S32 of second threshold value.This determining step and step S37 carry out synchronously.
In said method, after step S36, also comprise: judge that temperature sensor records temperature and whether reaches second threshold value (for example 2 ℃) less than set temperature value,, otherwise keep former running status if reach then execution in step S32 of second threshold value.This step can be carried out synchronously with step S37.
Be the protection compressor, before opening compressor, comprise judging whether compressor reaches second time (for example 3 minutes) apart from the time of cutting out last time, then directly open compressor as if second time that reached, otherwise open compressor after waiting for for second time again.
In said method; can comprise that also whether normal judge each unit status of dehydrating unit and at each parts execution in step S31 just often; otherwise the step of reporting to the police, wherein each unit status comprises that temperature sensor state, humidity sensor state, Compressor Discharge Pressure, compressor return air pressure overheat of compressor protective relay, compressor carry protective relay, indoor machine fan overheat protective relay, outdoor machine fan overheat protective relay and/or three-phase phase-sequence guard mode etc.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. freeze drying device, comprise humidity sensor, temperature sensor, indoor machine fan, the indoor set magnetic valve, the off-premises station magnetic valve, outdoor machine fan and compressor, it is characterized in that, also comprise control module, when reaching first threshold greater than the humidity value of setting, opens the humidity value that described control module records at humidity sensor indoor machine fan, the indoor set magnetic valve, off-premises station magnetic valve and compressor, and the C.T sensor records temperature and set temperature value after compressor start reaches the very first time, dynamo-electric magnet valve in dynamo-electric magnet valve and outdoor machine fan and the opening chamber outside the close chamber when recording temperature, otherwise dynamo-electric magnet valve and outdoor machine fan outside dynamo-electric magnet valve and the opening chamber in the close chamber less than design temperature.
2. freeze drying device according to claim 1, it is characterized in that, described control module judged whether compressor reached for second time apart from the time of cutting out last time before opening compressor, then open compressor as if second time that reached, otherwise open compressor after waiting for for second time.
3. freeze drying device according to claim 1, it is characterized in that, described control module is then closed indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor if record humidity less than setting humidity whether carrying out humidity that temperature judges that humidity sensor records after judging less than setting humidity.
4. the control method of a freeze drying device, described freeze drying device comprises humidity sensor, temperature sensor, indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor, it is characterized in that, may further comprise the steps:
A, judge whether the humidity value that humidity sensor records reaches first threshold greater than the humidity value of setting, if reach then execution in step b of first threshold;
B, unlatching indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve and compressor keep outdoor machine fan to close, and open outdoor machine fan after described compressor start reach the very first time;
C, C.T sensor record temperature and set temperature value, dynamo-electric magnet valve and outdoor machine fan outside the close chamber when recording temperature less than design temperature, otherwise dynamo-electric magnet valve in the close chamber.
5. the control method of freeze drying device according to claim 4 is characterized in that, also comprises after the described step c:
D, judge that humidity that humidity sensor records whether less than setting humidity, then closes indoor machine fan, indoor set magnetic valve, off-premises station magnetic valve, outdoor machine fan and compressor if record humidity less than setting humidity.
6. the control method of freeze drying device according to claim 5, it is characterized in that, outside the close chamber of described step c, also comprise after dynamo-electric magnet valve and the outdoor machine fan: judge that temperature sensor records temperature and whether reaches second threshold value greater than set temperature value, if reach then execution in step b of second threshold value, otherwise execution in step d.
7. the control method of freeze drying device according to claim 5, it is characterized in that, in the close chamber of described step c, also comprise after the dynamo-electric magnet valve: judge that temperature sensor records temperature and whether reaches second threshold value less than set temperature value, if reach then execution in step b of second threshold value, otherwise execution in step d.
8. the control method of freeze drying device according to claim 5, it is characterized in that, described step b comprises judging whether compressor reached for second time apart from the time of cutting out last time, if reaching for second time then opens compressor, otherwise opens compressor after waiting for for second time.
9. the control method of freeze drying device according to claim 5; it is characterized in that; also comprise before the described step a and judge that each unit status is whether normally and at each parts execution in step a just often; otherwise the step of reporting to the police, described each unit status comprises that temperature sensor state, humidity sensor state, Compressor Discharge Pressure, compressor return air pressure overheat of compressor protective relay, compressor carry protective relay, indoor machine fan overheat protective relay, outdoor machine fan overheat protective relay and/or three-phase phase-sequence guard mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101894284A CN102109211A (en) | 2009-12-24 | 2009-12-24 | Refrigeration dehumidifying device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101894284A CN102109211A (en) | 2009-12-24 | 2009-12-24 | Refrigeration dehumidifying device and control method thereof |
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| CN102109211A true CN102109211A (en) | 2011-06-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880015A (en) * | 2015-05-26 | 2015-09-02 | 青岛海尔股份有限公司 | Refrigerator and control method used for cooling draught fan of refrigerator compressor |
| CN105091494A (en) * | 2015-06-30 | 2015-11-25 | 青岛海尔股份有限公司 | Refrigerator and control method for cooling fan for refrigerator compressor |
| CN107045302A (en) * | 2017-03-17 | 2017-08-15 | 浙江绍兴苏泊尔生活电器有限公司 | Food cooking method of food processor and circuit for detecting power-down time |
| CN107575989A (en) * | 2017-08-02 | 2018-01-12 | 广东美的暖通设备有限公司 | Air-conditioning line control machine, air-conditioning system and air conditioner dehumidification control method |
| CN107676921A (en) * | 2017-09-12 | 2018-02-09 | 广东美的制冷设备有限公司 | Air conditioner and its humidity control method, device |
| CN108444033A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Condensation prevention control method for air conditioner |
| CN108681357A (en) * | 2018-05-29 | 2018-10-19 | 贵州电网有限责任公司 | A kind of temperature and humidity controlsystem and control method of substation control buildings |
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2009
- 2009-12-24 CN CN2009101894284A patent/CN102109211A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880015A (en) * | 2015-05-26 | 2015-09-02 | 青岛海尔股份有限公司 | Refrigerator and control method used for cooling draught fan of refrigerator compressor |
| CN104880015B (en) * | 2015-05-26 | 2018-02-02 | 青岛海尔股份有限公司 | The control method of refrigerator and cooling fan for freezer compressor |
| CN105091494A (en) * | 2015-06-30 | 2015-11-25 | 青岛海尔股份有限公司 | Refrigerator and control method for cooling fan for refrigerator compressor |
| CN105091494B (en) * | 2015-06-30 | 2018-02-02 | 青岛海尔股份有限公司 | The control method of refrigerator and cooling fan for freezer compressor |
| CN107045302A (en) * | 2017-03-17 | 2017-08-15 | 浙江绍兴苏泊尔生活电器有限公司 | Food cooking method of food processor and circuit for detecting power-down time |
| CN107045302B (en) * | 2017-03-17 | 2020-09-08 | 浙江绍兴苏泊尔生活电器有限公司 | Food cooking method of food processor and circuit for detecting power-down time |
| CN107575989A (en) * | 2017-08-02 | 2018-01-12 | 广东美的暖通设备有限公司 | Air-conditioning line control machine, air-conditioning system and air conditioner dehumidification control method |
| CN107575989B (en) * | 2017-08-02 | 2020-01-07 | 广东美的暖通设备有限公司 | Air conditioner wire controller, air conditioner system and air conditioner dehumidification control method |
| CN107676921A (en) * | 2017-09-12 | 2018-02-09 | 广东美的制冷设备有限公司 | Air conditioner and its humidity control method, device |
| CN107676921B (en) * | 2017-09-12 | 2020-02-04 | 广东美的制冷设备有限公司 | Air conditioner and humidity control method and device thereof |
| CN108444033A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Condensation prevention control method for air conditioner |
| CN108681357A (en) * | 2018-05-29 | 2018-10-19 | 贵州电网有限责任公司 | A kind of temperature and humidity controlsystem and control method of substation control buildings |
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Application publication date: 20110629 |