CN1888671A - Air conditioner defrosting operation controlling device and operating method thereof - Google Patents
Air conditioner defrosting operation controlling device and operating method thereof Download PDFInfo
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- CN1888671A CN1888671A CN 200510014356 CN200510014356A CN1888671A CN 1888671 A CN1888671 A CN 1888671A CN 200510014356 CN200510014356 CN 200510014356 CN 200510014356 A CN200510014356 A CN 200510014356A CN 1888671 A CN1888671 A CN 1888671A
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- 238000010257 thawing Methods 0.000 title claims abstract description 79
- 238000011017 operating method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000008447 perception Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 description 18
- 230000005494 condensation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
This invention relates to a kind of air conditioner defrosting operation controlling device and its operation method. The device includes two temperature sensors and microprocessor. Temperature sensor inputs outdoor temperature and outdoor heat exchanger pipe temperature. Whether it is defrosting operation condition is judged; if it is, the operational frequency of compressor is adjusted to the set defrost starting frequency. Indoor fan and outdoor fan are stopped. Defrosting operation is carried out; during defrosting operation, whether the cold air generated from outdoor head-on wind is flowed in is judged. The rotational rate/min of outdoor fan is inputted; the operational frequency of compressor is adjusted to the frequency higher than defrosting frequency. Fan rotational rate and compressor operational frequency are direct proportional; after defrosting, normal heating operation is recovered.
Description
Technical field
The invention belongs to the control device and the How It Works thereof of heat-exchange apparatus, especially relate to a kind of rotation by the perception outdoor fan motor, automatically regulate the compressor operation frequency, the defrosting operation controlling device of the air-conditioner of reinforcement defrost function and How It Works thereof.
Background technology
In general, air-conditioner is mainly as refrigerating machine, by a certain amount of refrigerant of compression, evaporation and condensation, utilizes fan to indoor discharge follow surrounding air to carry out the cold air that heat exchange produces according to the evaporation of refrigerant.
But, popularize refrigerating/heating two-purpose air conditioner recently with heat-production functions.Above-mentioned air-conditioner carries out compression, evaporation and the condensation cycle of refrigerant to opposite direction, and along with the condensation of refrigerant, refrigerant is carried out heat exchange with surrounding air and the hot-air that produces utilizes fan to indoor discharge.
But, such refrigerating/heating two-purpose air conditioner, when outdoor temperature descended, the outdoor heat converter surface produced frost, so exist cold wind to flow into indoor shortcoming, needed to be provided as defroster and the defrosting operation method of removing frost thus.
Defrosting operation controlling device below in conjunction with accompanying drawing 1 explanation air-conditioner.
The air-conditioner that is equipped with defrosting operation controlling device is in the past roughly divided into off-premises station 6 and indoor set 7 as shown in Figure 1.Off-premises station 6 comprises the compressor 1 by compression refrigerant; The cross valve 2 of conversion refrigerating/heating running; The volume of expansion refrigerant, the expansion valve 3 that refrigerant temperature is descended; The outdoor heat converter 4 of evaporation refrigerant; Constitute to the outdoor fan 5 of outdoor discharge from the outdoor heat converter liberated heat.
In addition, the branch joint (not shown) that is provided with for defrosting when the surperficial frosting that is equipped with between compressor 1 and the cross valve 2 when outdoor heat converter 4 makes a part of high temperature refrigerant gas inflow outdoor heat exchanger 4 to compressor 1 discharge.
Utilize the refrigerant conduit with the indoor set 7 that off-premises station 6 connects, comprise the indoor heat converter 8 of the refrigerant of discharging and constitute to the indoor fan 9 of indoor discharge indoor heat converter liberated heat by condensate compressor 1.
Such air-conditioner includes the 1st temperature sensor of measuring chamber outer heat-exchanger 4 temperature and measures the 2nd temperature sensor of outdoor temperature, but also comprise by after the temperature of C.T sensor measurement and the fiducial temperature according to the microprocessor (not shown) of comparative result output defrosting control signal.
The air-conditioner of the Gou Chenging running that defrosts as shown in Figure 2 like this.Defrosting operation method and shortcoming thereof according to microprocessor control in the past are as follows.
At first, by being judged as defrosting operating condition S1 after the temperature sensor sense temperature, then according to the control of microprocessor, indoor fan 9, outdoor fan 5 and cross valve 2 quit work, and have only compressor 1 running S2.At this moment, reduce,, and descend to the air themperature of indoor discharge so the refrigerant condensation number of 8 li of indoor heat converters reduces to indoor mobile coolant quantity.
Therefore, reduce rapidly, simultaneously in order to finish defrosting, with the defrosting operating frequency running compressor 1S3 that has imported to the quantity of hot air of indoor discharge.
When defrosting was turned round as mentioned above, the operating frequency of compressor was the defrosting frequency of importing in microprocessor.The defrosting frequency is the value behind consideration defrost performance, the off-premises station noise.
Outdoor conduit temperature more than uniform temperature or defrosting running through after a while, then microprocessor finishes the defrosting running, returns to and normally heats operating condition S4.
When defrosting was turned round like this, the reason that stops outdoor fan was: prevent to carry out heat exchange, for the frost on the temperature thawing outdoor heat converter of discharging with pure compressor.If when around the off-premises station high wind being arranged, owing to flow into head-on wind by off-premises station, carry out the loth heat exchange of institute, the temperature of outdoor heat converter can not rise, so the shortcoming that exists defrost function to descend.
Do not consider above-mentioned shortcoming, in defrosting operation controlling method in the past, after if air-conditioner heats running through one section, running need defrost, but erroneous judgement is broken into the defrosting end, directly return to and normally heat operating condition,, become the reason that the air conditioning performance descends so the frost that adheres on outdoor heat converter accumulation is frozen.
Summary of the invention
The present invention is defrosting operation controlling device and the How It Works thereof that a kind of air conditioner is provided for the shortcoming that solves prior art, when the refrigerating/heating two-purpose air conditioner defrosts running, perception outdoor fan rotating speed/per minute (hereinafter to be referred as rotating speed), if head-on wind flows into, improve the operating frequency of compressor, can effectively remove the frost on outdoor heat converter surface thus.
In order to solve above-mentioned problem, the technical solution used in the present invention is:
A kind of defrosting operation controlling device of air-conditioner, air-conditioner possess the refrigerating/heating function, and this control device comprises the 1st temperature sensor by perception outdoor heat converter conduit temperature; The 2nd temperature sensor of sensing outside temperature; Be characterized in that this device also comprises can feed back the outdoor fan motor that is caused the motor rotating tachometer value by outdoor head-on wind; Reach the temperature value that receives the 1st and the 2nd temperature sensor perception, judge that outdoor heat converter is the defrosting condition, and the tachometer value that when the defrosting running, feeds back according to outdoor fan motor, the off-premises station microprocessor of control compressor operation frequency constitutes.
The defrosting operation controlling device of described air-conditioner, its off-premises station microprocessor connects with the indoor set microprocessor for the tachometer value that transmits the outdoor fan motor feedback.
A kind of defrosting How It Works of air-conditioner is characterized in, comprises by the conduit temperature from the 1st and the 2nd temperature sensor input outdoor temperature and outdoor heat converter, judges whether it is the 1st stage of defrosting operating condition; If the defrosting operating condition is adjusted into the defrosting frequency starting of having set to the operating frequency of compressor, and shut down indoor fan and outdoor fan, the 2nd stage of the running that defrosts; In the defrosting operation process, in order to judge whether to flow into the wind-induced cold air that heads on, the 3rd stage of input outdoor fan rotating speed by outdoor; The fan rotating speed that follows the wind is directly proportional, and the operating frequency of compressor is adjusted into the 4th stage that is higher than the frequency that defrosts; The defrosting running finishes, and the 5th stage that normally heats running constitutes.
The defrosting How It Works of described air-conditioner surpasses the r1 value of having set if its 4th stage also comprises by the outdoor fan rotating speed, with the operating frequency drive compression machine that is higher than 2 grades of defrosting frequencies; If greater than the r2 value, use the operating frequency drive compression machine that is higher than 1 grade of defrosting frequency less than above-mentioned r1 value; If below the r2 value, keep the process of defrosting frequency and drive compression machine.
The good effect of invention
The defrosting operation controlling device of the air-conditioner of the present invention of Gou Chenging and How It Works thereof as mentioned above, when refrigerating/heating two-purpose air conditioner defrosting running, perception outdoor fan rotating speed, the interim intensity of judging head-on wind of microprocessor, improve the operating frequency of compressor then according to the result who judges, so can prevent to descend, but also have the effect that to finish defrosting at short notice because of outdoor head-on wind makes defrost performance.
Describe preferred embodiment of the present invention in detail below in conjunction with accompanying drawing.
The simple declaration of accompanying drawing
Fig. 1 is the schematic diagram of common refrigerating/heating two-purpose air conditioner,
Fig. 2 is the defrosting running method of work programme diagram of in the past inventing,
Fig. 3 is a defrosting operation controlling device schematic diagram of the present invention,
Fig. 4 is a defrosting running method of work programme diagram of the present invention.
The explanation of the main symbol of accompanying drawing
1a: compressor 2a: cross valve
5a: outdoor fan 9a: indoor fan
14a: the 1st temperature sensor 15a: the 2nd temperature sensor
16a: indoor set microprocessor 16b: off-premises station microprocessor
The specific embodiment:
The defrosting operation controlling device of 3 explanations air-conditioner of the present invention constitutes at first, in conjunction with the accompanying drawings.At this moment, identical with the basic comprising of the mobile relevant air-conditioner of refrigerant with the explanation of invention in the past, so omit below.
At first, compressor 1a is: after sucking the low-temp low-pressure gas coolant of evaporator evaporation, reach condensation temperature in order to make refrigerant, the device of compression refrigerant.Compressor 1a according to operation mode with different operating frequency work.Such compressor can be selected scroll compressor, rotary compressor and screw compressor for use according to compress mode, does not limit its kind in this manual.
Microprocessor can be divided into the indoor set microprocessor 16a of output control signal after the running control instruction that receives the user, by the off-premises station microprocessor 16b with the outdoor machine running of indoor set microprocessor exchange signal controlling.
Off-premises station microprocessor 16b receives the control instruction that indoor set microprocessor 16a sends, and judges that control instruction belongs to cooling operation, heats running, after any instruction in the running of turning round and defrost automatically, and the decision refrigerant circulates.
That is,, change cross valve 2a, make the corresponding operation mode of loop direction of refrigerant if cooling operation instructs or heats the running instruction; If running instruction is automatically turned round according to the running program that has stored automatically according to outdoor temperature and indoor temperature; If defrosting running instruction, the defrosting frequency that the operating frequency of compressor 1a is set at formulation turns round.
Here, off-premises station microprocessor 16b is connected with the 1st temperature sensor 14a of perception outdoor heat converter conduit temperature and the 2nd temperature sensor 15a of sensing outside temperature, judges the defrosting operating condition after the input perception value, adjusts the defrosting frequency.
For this reason, off-premises station microprocessor 16b of the present invention connects with outdoor fan 5a, the rotating speed of perception outdoor fan motor.Promptly, microprocessor 16b can judge by the feedback terminal of outdoor fan 5a rotating speed whether outdoor fan is rotated by outdoor head-on wind, and defrost when turning round as mentioned above, if whether outdoor fan rotation maintains the operating frequency of compressor with on the identical frequency of defrosting frequency or be adjusted into and be higher than the defrosting frequency according to the tachometer value decision of outdoor fan motor perception.
Describe the defrosting operation controlling device How It Works of the air-conditioner that constitutes like this in detail below in conjunction with accompanying drawing 4.
For to descending along with outside air temperature in whether the defrost judgement of running of the frost of the surface attachment of outdoor heat converter, judge defrosting operating condition L1 from the temperature of the 1st and the 2nd temperature sensor input outdoor temperature and outdoor heat converter conduit.
If enter the defrosting operation mode, the operating frequency of compressor is adjusted into the defrosting frequency starting of having set, shut down indoor fan 9a and outdoor fan 5a convert cross valve to the cooling operation pattern, and running L2 thus defrosts.
In the process of running that defrosts, in order to judge whether to flow into the wind-induced cold air that heads on by outdoor, whether the outdoor fan rotating speed of judging perception is above having set value r1.If surpass above-mentioned r1, be judged as noser, use than the defrosting frequency to exceed 2 grades operating frequency drive compression machine L3, L4.
If the outdoor fan rotating speed of perception is that (r2＜r1), be judged as weak head-on wind uses than the defrosting frequency to exceed 1 grade operating frequency drive compression machine L5, L6 for the r2 that set and the value between the r1.As mentioned above,, improve the operating frequency of compressor, so effectively defrosting at short notice if head-on wind flows into.
If the outdoor fan rotating speed of perception is the following value of r2, be judged as and can ignore head-on wind, keep the defrosting frequency and the starting compressor L7 that have set.
If the defrosting running finishes, cross valve is converted to heating mode, heat running L8 normally, L9.
As mentioned above, the defrosting operation controlling device and the How It Works thereof of air-conditioner of the present invention are illustrated in conjunction with the accompanying drawings, but the present invention can not limit among the embodiment and accompanying drawing of record in this manual, and one of ordinary skill in the art can propose different embodiment in technological thought scope of the present invention.
Claims (4)
1. the defrosting operation controlling device of an air-conditioner, this air-conditioner possesses the refrigerating/heating function, and this control device comprises the 1st temperature sensor by perception outdoor heat converter conduit temperature; The 2nd temperature sensor of sensing outside temperature; It is characterized in that this device also comprises can feed back the outdoor fan motor that is caused motor rotating rotating speed/per minute value by outdoor head-on wind; Reach the temperature value that receives the 1st and the 2nd temperature sensor perception, judge that outdoor heat converter is the defrosting condition, and the tachometer value that when the defrosting running, feeds back according to outdoor fan motor, the off-premises station microprocessor of control compressor operation frequency constitutes.
2. the defrosting operation controlling device of air-conditioner according to claim 1 is characterized in that, the off-premises station microprocessor connects with the indoor set microprocessor for the tachometer value that transmits the outdoor fan motor feedback.
3. the defrosting How It Works of an air-conditioner is characterized in that, comprises by the conduit temperature from the 1st and the 2nd temperature sensor input outdoor temperature and outdoor heat converter, judges whether it is the 1st stage of defrosting operating condition; If the defrosting operating condition is adjusted into the defrosting frequency starting of having set to the operating frequency of compressor, and shut down indoor fan and outdoor fan, the 2nd stage of the running that defrosts; In the defrosting operation process, in order to judge whether to flow into the wind-induced cold air that heads on, the 3rd stage of the rotating speed of input outdoor fan by outdoor; The fan rotating speed that follows the wind is directly proportional, and the operating frequency of compressor is adjusted into the 4th stage that is higher than the frequency that defrosts; The defrosting running finishes, and the 5th stage that normally heats running constitutes.
4. the defrosting How It Works of air-conditioner according to claim 3 is characterized in that, the 4th stage also comprised if the outdoor fan rotating speed surpasses the r1 value of having set, with the operating frequency drive compression machine that is higher than 2 grades of defrosting frequencies; If greater than the r2 value, use the operating frequency drive compression machine that is higher than 1 grade of defrosting frequency less than above-mentioned r1 value; If below the r2 value, keep the process of defrosting frequency and drive compression machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014356 CN1888671A (en) | 2005-06-30 | 2005-06-30 | Air conditioner defrosting operation controlling device and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014356 CN1888671A (en) | 2005-06-30 | 2005-06-30 | Air conditioner defrosting operation controlling device and operating method thereof |
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| CN1888671A true CN1888671A (en) | 2007-01-03 |
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| CN 200510014356 Pending CN1888671A (en) | 2005-06-30 | 2005-06-30 | Air conditioner defrosting operation controlling device and operating method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975440A (en) * | 2010-11-26 | 2011-02-16 | 四川长虹空调有限公司 | Control method for relieving frosting of outdoor condenser of air conditioner |
| CN102472539A (en) * | 2009-07-22 | 2012-05-23 | 夏普株式会社 | Air conditioner |
| CN103940038A (en) * | 2014-04-03 | 2014-07-23 | 广东美的集团芜湖制冷设备有限公司 | Defrosting control method of air conditioner |
| CN104061650A (en) * | 2013-03-19 | 2014-09-24 | 约克广州空调冷冻设备有限公司 | Frosting judgment method of air-cooled heat pump air conditioner |
| CN104136858A (en) * | 2012-06-06 | 2014-11-05 | 夏普株式会社 | Air conditioner |
| CN104791942A (en) * | 2014-01-21 | 2015-07-22 | 广东美的暖通设备有限公司 | Air conditioner system, control method of air conditioner system and outdoor unit of air conditioner system |
| CN105588267A (en) * | 2015-05-29 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Defrosting control method and device for automatically detecting frost quantity of heat pump system |
| CN106949605A (en) * | 2017-04-10 | 2017-07-14 | 广东美的暖通设备有限公司 | Air-conditioner, outdoor unit accumulated snow determination methods and system |
| EP3260790A4 (en) * | 2015-02-18 | 2018-10-24 | Mitsubishi Electric Corporation | Air conditioning device |
| CN114251784A (en) * | 2020-09-22 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioner and indoor unit control method thereof |
-
2005
- 2005-06-30 CN CN 200510014356 patent/CN1888671A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472539A (en) * | 2009-07-22 | 2012-05-23 | 夏普株式会社 | Air conditioner |
| CN102472539B (en) * | 2009-07-22 | 2014-07-09 | 夏普株式会社 | Air conditioner |
| CN101975440B (en) * | 2010-11-26 | 2012-05-23 | 四川长虹空调有限公司 | Control method for relieving frosting of outdoor condenser of air conditioner |
| CN101975440A (en) * | 2010-11-26 | 2011-02-16 | 四川长虹空调有限公司 | Control method for relieving frosting of outdoor condenser of air conditioner |
| CN104136858A (en) * | 2012-06-06 | 2014-11-05 | 夏普株式会社 | Air conditioner |
| CN104061650B (en) * | 2013-03-19 | 2016-08-03 | 约克广州空调冷冻设备有限公司 | The frosting decision method of air-cooling heat pump air conditioner |
| CN104061650A (en) * | 2013-03-19 | 2014-09-24 | 约克广州空调冷冻设备有限公司 | Frosting judgment method of air-cooled heat pump air conditioner |
| CN104791942A (en) * | 2014-01-21 | 2015-07-22 | 广东美的暖通设备有限公司 | Air conditioner system, control method of air conditioner system and outdoor unit of air conditioner system |
| CN104791942B (en) * | 2014-01-21 | 2017-08-29 | 广东美的暖通设备有限公司 | Air-conditioning system and its control method, the outdoor unit of air-conditioning system |
| CN103940038A (en) * | 2014-04-03 | 2014-07-23 | 广东美的集团芜湖制冷设备有限公司 | Defrosting control method of air conditioner |
| CN103940038B (en) * | 2014-04-03 | 2016-09-28 | 广东美的集团芜湖制冷设备有限公司 | The defrosting control method of air-conditioner |
| EP3260790A4 (en) * | 2015-02-18 | 2018-10-24 | Mitsubishi Electric Corporation | Air conditioning device |
| CN105588267A (en) * | 2015-05-29 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Defrosting control method and device for automatically detecting frost quantity of heat pump system |
| CN105588267B (en) * | 2015-05-29 | 2018-07-24 | 青岛海信日立空调系统有限公司 | A kind of defrosting control method and device that heat pump system frosting degree detects automatically |
| CN106949605A (en) * | 2017-04-10 | 2017-07-14 | 广东美的暖通设备有限公司 | Air-conditioner, outdoor unit accumulated snow determination methods and system |
| CN114251784A (en) * | 2020-09-22 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioner and indoor unit control method thereof |
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