CN1920422A - Defrosting apparatus of air conditioner outdoor machine and control method thereof - Google Patents
Defrosting apparatus of air conditioner outdoor machine and control method thereof Download PDFInfo
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- CN1920422A CN1920422A CN 200510014776 CN200510014776A CN1920422A CN 1920422 A CN1920422 A CN 1920422A CN 200510014776 CN200510014776 CN 200510014776 CN 200510014776 A CN200510014776 A CN 200510014776A CN 1920422 A CN1920422 A CN 1920422A
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Abstract
The invention relates to a defrost device of outdoor machine of air conditioner, and relative control method, wherein the invention is characterized in that: the outdoor heat exchanger is divided into two parts, while each part is connected with electromagnetic valve and expander; and the defrost control method comprises: entering into heating step; judging the operating time; judging if the air conditioner has entered into outdoor distribute tube temperature step; if it has reached preset time and temperature, entering into defrosting step; judging if the defrosting is ended and if it is ended, returning to heating step. The invention can avoid auxiliary electric heater, and switching into refrigerating mode periodically, to defrost automatically.
Description
Technical field
The invention belongs to a kind of air-conditioner, be specifically related to a kind of outdoor heat converter is divided into two parts, be separately installed with expansion gear and magnetic valve in the front of each part, make air-conditioner heat the outdoor machine defrosting device and the control method thereof that needn't convert the air-conditioner that refrigeration mode just can automatic defrosting under the operation mode to.
Background technology
In general, air-conditioner is: evaporate in summer → compress → kind of refrigeration cycle of the sequential loop of condensation → expansion, change cross valve in the winter time, carry out heating circulation, indoor temperature is maintained refrigeration or heating on user's desired level with the reverse heat pump of kind of refrigeration cycle.Air-conditioner has both refrigeration or heat-production functions usually, changes into clean air after suction chamber internal contamination air filters again to the air-cleaning function of indoor discharge, sucks humid air and changes into behind the dry air again to the dehumidification function of indoor discharge etc.
As shown in Figure 1, indoor heat converter 12 is installed in indoor suction inlet 14 rears that are positioned at air conditioner room unit 10 fronts, the conduit 20 that the inside of indoor heat converter 12 has refrigerant to flow is by refrigerant that flows at conduit 20 and the temperature of adjusting air conditioning space 1 from the process of the heat exchange between the room air of indoor suction inlet 14 suctions.That is, air-conditioner is in cooling operation, and the low temperature refrigerant and the room air that flow at indoor heat converter 12 carry out heat exchange, reduce the temperature in air conditioning space 1; When heating running, the high temperature refrigerant and the room air that flow at indoor heat converter 12 carry out heat exchange, improve the temperature in air conditioning space 1.
Indoor set 10 is connected with off-premises station 30 by conduit 20, and off-premises station 30 is 1 outside installation separately in the air conditioning space, within it portion be installed as adjustment refrigerant circular flow to cross valve 32; By compression refrigerant, change refrigerant the compressor 34 of high-temperature high-pressure state refrigerant into, condensation refrigerant when cooling operation, the outdoor heat converter 36 of evaporation refrigerant when heating running; The expansion refrigerant, refrigerant changed into expansion gear 38 of low-temp low-pressure state refrigerant etc.
In Fig. 1, symbol 16 is indoor fans, the 35th, and outdoor suction inlet, the 37th, outdoor fan.
The following describes the situation of air conditioner heat-production running:
The HTHP refrigerant of discharging from compressor 34 is according to 12 li of the effect inflow indoor heat exchangers of cross valve 32, the HTHP refrigerant that inflow indoor heat exchanger is 12 li carries out heat exchange with the room air that flows into 10 li of indoor sets, and improves the temperature of room air.Then, become the low-temp low-pressure gas coolant when flowing through expansion gear 38, continue then to flow into 34 li on compressors through outdoor heat converter 36 backs through the refrigerant of indoor heat converter 12.Therefore, when heating running, refrigerant is recycle compressor 34 → indoor heat converter 12 → expansion gear 38 → outdoor heat converter 36 → compressor 34 repeatedly, and the temperature in air conditioning space 1 is brought up to design temperature.
As mentioned above, air-conditioner is when heating running, if outdoor environment is below freezing point temperature and a certain amount of moisture arranged, expose dew on outdoor heat converter 36 surfaces of outdoor environment, and such dew begins under outdoor temperature condition below freezing to freeze and the formation frost.The frost on outdoor heat converter 36 surfaces carries out the discharged air temperature decline of heat exchange thus along with the running that heats of air-conditioner continues to increase gradually by indoor heat converter 12, cause heat-production functions to reduce.
Therefore, in order to remove frost, and under environment below freezing, also can effectively continue to heat running, need at set intervals in heating operation process, need the running that defrosts.The defrosting running is: in order to melt the frost on outdoor heat converter 36 surfaces, in heating the process of running, during certain hour, carry out cooling operation at set intervals, during the running that defrosts, outdoor heat converter 36 is discharged warm braw, melts outdoor heat converter 36 lip-deep frosts.Especially in morning in winter, take place not heat running, and the situation with warming up of just defrosting repeatedly, the consumer may be misinterpreted as air-conditioner and break down.So the defrosting operation controlling method of prior art, the defrosting operating condition is based on product, can not reach the comfortable heating of consumer.
Summary of the invention
The present invention proposes for overcoming the shortcoming that exists in the prior art, its objective is provides a kind of and does not need to be provided with electrical auxiliary heater, also do not need air-conditioner to carry out cooling operation at regular intervals again in heating operation process, the outdoor machine defrosting device and the control method thereof of air-conditioner that also can automatic defrosting.
Technical scheme of the present invention is: a kind of outdoor machine defrosting device of air-conditioner comprises: outdoor heat converter, power supply unit, indoor temperature sense part, indoor tube temperature sense part, outdoor temperature sense part, outdoor piping temperature sense part and indoor fan drive division, driven compressor portion, outdoor fan drive division, cross valve drive division and timer; Also comprise the outside humidity sense part of measuring outside humidity, the defrost control part of running of the value of measuring according to outdoor piping temperature sense part and outside humidity sense part stores storage part and solenoid-driven portion that related data is carried out in the defrosting running; Outdoor heat converter is divided into two parts, and each part all is connected with magnetic valve and expansion gear, and magnetic valve and expansion gear are for being connected in parallel; The timer of promising measurement air conditioner heat-production time is set in control part.
Defrosting control method comprised with the next stage: enter and heat the operation process stage; Judge whether air-conditioner reached through stage regular hour; The state and the external environment condition of control part periodic survey air-conditioner judge whether air-conditioner reaches the outdoor piping temperature stage; If reach time of setting and temperature then enter the stage; Enter the defrosting running then and finish decision stage; If the defrosting running has been finished then has been recovered normally to heat phase run.
Above-mentioned certain hour is meant that driven compressor begins not stop and the time of continuous running in the middle of the back, carries out condition 30～60 minutes in initial defrosting running.The outdoor piping temperature is the value through test, carries out condition 0～-6 ℃ temperature in initial defrosting running.
The present invention is owing to be divided into two parts with outdoor heat converter, and each part all is connected with magnetic valve and expansion gear, and magnetic valve and expansion gear are for being connected in parallel.During defrosting, at first open the frost that a magnetic valve is removed the outdoor heat converter upside earlier, close magnetic valve after defrosting time is approximately more than half, open another magnetic valve again, remove the frost of outdoor heat converter downside.The present invention does not need to be provided with electrical auxiliary heater, does not need air-conditioner to switch to refrigeration mode at regular intervals again in heating operation process yet, can automatic defrosting yet.
Description of drawings
Fig. 1 is the structure chart of existing air-conditioner;
Fig. 2 is an air-conditioner structure chart of the present invention;
Fig. 3 is an air-conditioner defroster block diagram of the present invention;
Fig. 4 is an air-conditioner defrosting control method programme diagram of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
Shown in Fig. 2,3, indoor machine of air-conditioner 200 is installed in the air conditioning space, and promptly the interior space is 100 li.Be provided with indoor air sucting inlet 210, indoor heat converter 230 and indoor fan 240 being positioned at indoor set 200 fronts.The air of the interior space 100 flows into the air-conditioner inside by indoor air sucting inlet 210, carries out heat exchange when the room air that flows into passes through indoor heat converter 230 like this and after adjusting temperature, discharges to the interior space by indoor outlet (not shown).At this moment, indoor fan 240 plays the stream effect of discharging behind the inner suction of air-conditioner room air.In addition, 200 li power supply units 201 that are provided with to the air-conditioner power supply of indoor set; For measuring the indoor temperature sense part 202 of the interior space 100 temperature; For measuring the indoor tube temperature sense part 203 of indoor tube temperature; Indoor fan drive division 211 for drive chamber's internal fan 240; For the control part 300 of control air-conditioner whole running etc.
Off-premises station 400 is installed in outside, air conditioning space, and is promptly outdoor, and the conduit 250 that flows by refrigerant is connected with indoor set 200.The inside of off-premises station 400 is equipped with the cross valve 410 of adjusting the refrigerant flow direction; Compression refrigerant changes refrigerant on the compressor 420 of HTHP refrigerant; Condensation refrigerant and when cooling operation at the outdoor heat converter 430 that is heating when running evaporation refrigerant; In order to form the outdoor fan 440 of the stream of after off-premises station 400 inner suction chamber outer air, discharging; The expansion refrigerant changes refrigerant into the expansion gear 450 of low-temp low-pressure refrigerant; Outdoor heat converter 430 is divided into two parts, and wherein a part is connected with expansion gear 450 by magnetic valve 470, expansion gear 490, and another part is connected with expansion gear 450 by magnetic valve 480, expansion gear 500.
In addition, the multiple device of checking duty He its surrounding environment of air-conditioner in order effectively to control the driving of air-conditioner also is installed in off-premises station 400 inside.For example, for measuring the outdoor temperature sense part 204 of outdoor temperature; For measuring the outdoor piping temperature sense part 205 of outdoor piping temperature; For measuring sense part and driven compressor portion 213, outdoor fan drive division 214, solenoid-driven portion 212 and the cross valve drive divisions 215 etc. such as outside humidity sense part 206 of outside humidity.
If air-conditioner begins to heat running, control part 300 is to aforesaid each drive division output control signal.Therefore, indoor fan 240 begins rotation, and compressor 420 is discharged after beginning refrigerant is compressed into high-temperature high-pressure state.From HTHP refrigerant inflow indoor heat exchanger 230 backs that compressor 420 is discharged with carry out heat exchange at the dirty air of going into indoor set 200 inside of the revolving force effect of indoor fan 240.Thus, the relative low-temperature condition room air of suction improves temperature by heat exchange.
After passing through expansion gear 450,490,500 and outdoor heat converter 430 (magnetic valve 470, magnetic valve 480 are in closed condition when normally heating running) successively, the refrigerant that carries out heat exchange when the indoor heat converter 230 flows into compressor 420 again, continue then to heat circulation, indoor temperature is brought up to the desired level of user by the reiteration of compressor 420, indoor heat converter 230, expansion gear 450,490,500 and outdoor heat converter 430.
In addition, carry out repeatedly above-mentioned heat circulation during, various sense part are periodically judged the state and the surrounding environment of air-conditioner, and the numerical value that control part 300 is measured with sense part serves as after the air-conditioner present situation is grasped on the basis, with these serves as according to the duty of readjusting each drive division, and air-conditioner is effectively worked.
After heating running beginning, if spent a period of time, the surface of outdoor heat converter 430 begins to produce frost, and amass in long more in outdoor temperature the frost of Chan Shenging many more by low more and time that heats like this.The frost that outdoor heat converter 430 surfaces produce is the lethal factor that reduces the heating efficiency of air-conditioner.
Fig. 4 is the flow chart of air-conditioner defrosting control method of the present invention.
As shown in Figure 4, after air conditioner heat-production running beginning, enter and heat the operation process S100 stage;
The state and the external environment condition of control part 300 periodic survey air-conditioners, judge whether air-conditioner reached through the regular hour S110 stage, whether the various values of promptly periodically confirming the measurement of various sense part and timer are consistent with storage part 310 li defrostings runnings with existing storage carrying out condition value, at the air-conditioner start of run, the defrosting running condition of carrying out that stores in the storage part is that condition is carried out in the initial defrosting running that the manufacturer imports in advance when making air-conditioner, above-mentioned certain hour is to mean that driven compressor begins not stop and the time of continuous running in the middle of the back, for example carries out condition 30～60 minutes in initial defrosting running;
The state and the external environment condition of control part 300 periodic survey air-conditioners judge whether air-conditioner reaches the outdoor piping temperature S120 stage, and the outdoor piping temperature is the value through test, for example carry out condition 0～-6 ℃ temperature in initial defrosting running;
If reach time of setting and temperature then enter the S130 stage of defrosting, at this moment at first open magnetic valve 470, remove the frost of outdoor heat converter 430 upsides earlier, close magnetic valve 470 after defrosting time is approximately more than half, open magnetic valve 480 again, remove the frost of outdoor heat converter 430 downsides;
Enter the defrosting running then and finish the judgement S140 stage;
If the defrosting running has been finished then recovered normally to heat the running S150 stage, at this moment close magnetic valve 470 and magnetic valve 480; So far defrost process finishes.
The present invention does not need to be provided with electrical auxiliary heater, does not need air-conditioner to switch to refrigeration mode at regular intervals again in heating operation process yet, can automatic defrosting yet.
Claims (7)
1, a kind of outdoor machine defrosting device of air-conditioner, comprise outdoor heat converter, power supply unit, the indoor temperature sense part, indoor tube temperature sense part, the outdoor temperature sense part, outdoor piping temperature sense part and indoor fan drive division, driven compressor portion, the outdoor fan drive division, cross valve drive division and timer, it is characterized in that: also comprise the outside humidity sense part of measuring outside humidity, the defrost control part of running of the value of measuring according to outdoor piping temperature sense part and outside humidity sense part stores storage part and solenoid-driven portion that related data is carried out in the defrosting running.
2, the outdoor machine defrosting device of air-conditioner according to claim 1 is characterized in that: outdoor heat converter is divided into two parts, and each part all is connected with magnetic valve and expansion gear.
3, the outdoor machine defrosting device of air-conditioner according to claim 2 is characterized in that: magnetic valve and expansion gear are and downlink connection.
4, the outdoor machine defrosting device of air-conditioner according to claim 1 is characterized in that: the timer that the promising measurement air conditioner heat-production time is set in control part.
5, a kind of off-premises station defrosting control method of air-conditioner is characterized in that comprising with the next stage:
Enter and heat the operation process S100 stage; Judge whether air-conditioner reached through the regular hour S110 stage;
The state and the external environment condition of control part 300 periodic survey air-conditioners judge whether air-conditioner reaches the outdoor piping temperature S120 stage; The time and the temperature that reach setting then enter the S130 stage; Enter the defrosting running then and finish the judgement S140 stage; The defrosting running has been finished and has then been recovered normally to heat the running S150 stage.
6, the defrosting control method of air-conditioner outdoor unit according to claim 5 is characterized in that: above-mentioned certain hour is meant that driven compressor begins not stop and the time of continuous running in the middle of the back, carries out condition 30～60 minutes in initial defrosting running.
7, the defrosting control method of air-conditioner outdoor unit according to claim 5 is characterized in that: the outdoor piping temperature is the value through test, carries out condition 0～-6 ℃ temperature in initial defrosting running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510014776XA CN100541035C (en) | 2005-08-22 | 2005-08-22 | The outdoor machine defrosting device of air-conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510014776XA CN100541035C (en) | 2005-08-22 | 2005-08-22 | The outdoor machine defrosting device of air-conditioner and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1920422A true CN1920422A (en) | 2007-02-28 |
| CN100541035C CN100541035C (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200510014776XA Expired - Fee Related CN100541035C (en) | 2005-08-22 | 2005-08-22 | The outdoor machine defrosting device of air-conditioner and control method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032649A (en) * | 2010-12-14 | 2011-04-27 | 海信（山东）空调有限公司 | Defrosting control method for air-conditioning system |
| CN109974204A (en) * | 2019-04-01 | 2019-07-05 | 珠海格力电器股份有限公司 | Control method and device of air conditioner with defrosting condition correction function |
| CN111033152A (en) * | 2017-08-08 | 2020-04-17 | 大金工业株式会社 | Refrigerating machine |
| CN112303817A (en) * | 2020-10-15 | 2021-02-02 | 珠海格力电器股份有限公司 | Mechanical air conditioner and defrosting control method and storage medium thereof |
| CN112432309A (en) * | 2020-11-26 | 2021-03-02 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
| CN114061030A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
-
2005
- 2005-08-22 CN CNB200510014776XA patent/CN100541035C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032649A (en) * | 2010-12-14 | 2011-04-27 | 海信（山东）空调有限公司 | Defrosting control method for air-conditioning system |
| CN102032649B (en) * | 2010-12-14 | 2012-08-22 | 海信（山东）空调有限公司 | Defrosting control method for air-conditioning system |
| CN111033152A (en) * | 2017-08-08 | 2020-04-17 | 大金工业株式会社 | Refrigerating machine |
| CN111033152B (en) * | 2017-08-08 | 2021-05-25 | 大金工业株式会社 | Refrigerating machine |
| CN109974204A (en) * | 2019-04-01 | 2019-07-05 | 珠海格力电器股份有限公司 | Control method and device of air conditioner with defrosting condition correction function |
| CN109974204B (en) * | 2019-04-01 | 2020-10-20 | 珠海格力电器股份有限公司 | Control method and device of air conditioner with defrosting condition correction function |
| CN112303817A (en) * | 2020-10-15 | 2021-02-02 | 珠海格力电器股份有限公司 | Mechanical air conditioner and defrosting control method and storage medium thereof |
| CN112432309A (en) * | 2020-11-26 | 2021-03-02 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
| CN114061030A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN100541035C (en) | 2009-09-16 |
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Granted publication date: 20090916 Termination date: 20100822 |