CN1955591A - Method for preventing icing of outdoor refrigerant pipe of air conditioner - Google Patents
Method for preventing icing of outdoor refrigerant pipe of air conditioner Download PDFInfo
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- CN1955591A CN1955591A CN 200510015741 CN200510015741A CN1955591A CN 1955591 A CN1955591 A CN 1955591A CN 200510015741 CN200510015741 CN 200510015741 CN 200510015741 A CN200510015741 A CN 200510015741A CN 1955591 A CN1955591 A CN 1955591A
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- refrigerant pipe
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- outdoor refrigerant
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Abstract
A method for preventing outdoor refrigerant tube of air-conditioner from frozen includes detecting temperature of outdoor cooling media tube and judging whether temperature is under 0 deg.c or not, operating compressor continuously if it is or otherwise switching off compressor and making 3 minutes time delay, then judging whether temperature is over 7deg.c or not and restarting up compressor if it is or otherwise returning to switching off state of compressor.
Description
Technical field
The present invention relates to a kind of method that is used to prevent icing of outdoor refrigerant pipe of air conditioner.
Background technology
In general, air-conditioner is that a kind of low temperature refrigerant and indoor hot-air of utilizing carries out heat exchange, and then with the cold air drainage after the heat exchange to indoor, thereby reduce indoor temperature or improve the cold/hot-air regulating system of indoor temperature by process in contrast to this.Fig. 1 is that the air-conditioner of prior art constitutes schematic diagram.As shown in Figure 1, the air-conditioner of this prior art mainly comprises the compressor 40 that is used for compression refrigerant; Can regulate the cross valve 50 that the refrigerant that flows into compressor 40 and discharge from compressor 40 flows to according to refrigerating/heating circulation; Be installed in the interior space, be used for carrying out the indoor heat converter 10 of heat exchange with room air; Can make refrigerant carry out the expansion gear 30 of inflated with low pressure; With the outdoor heat converter 20 that can carry out heat exchange with outdoor air.Above-mentioned these devices are to utilize refrigerant pipe to be connected with each other.In addition, described air-conditioner also comprises and is used to suck room air, thereby accelerates the indoor fan 11 that this air and refrigerant through indoor heat converter 10 carry out heat exchange; Be used for the suction chamber outer air, thereby accelerate this air and the outdoor fan 21 that carries out heat exchange through the refrigerant of outdoor heat converter 20.Wherein indoor heat converter 10 is mounted in indoor and has refrigeration or heat the device of effect, and it has the effect of evaporimeter when kind of refrigeration cycle, then has the effect of condenser heating circulation time.Outdoor heat converter 20 has the effect of condenser when kind of refrigeration cycle, then have the effect of evaporimeter heating circulation time.When air-conditioner carries out kind of refrigeration cycle, 40 compressions of compressed machine and the refrigerant that becomes high-temperature high-pressure state are at first by cross valve 50 inflow outdoor heat exchangers 20, this refrigerant will dispel the heat to the outside in outdoor heat converter 20, and when flowing through expansion gear 30, significantly reducing its temperature and pressure, this low temperature, low pressure refrigerant are with inflow indoor heat exchanger 10 subsequently.This refrigerant will absorb the heat of surrounding air in indoor heat converter 10, flow back to again in the compressor 40 through cross valve 50 at last, circulate so repeatedly.It is then opposite with above-mentioned kind of refrigeration cycle process to heat circulation.But, there is following point in the air-conditioner of this prior art: when the air-conditioner of this prior art carries out cryogenic refrigeration circulation or indoor set shielding, if the temperature of outdoor refrigerant pipe just is easy to occur ice formation issues after being low to moderate certain value, especially under the situation of long pipeline, owing to be positioned at temperature-detecting device be not set on the outdoor refrigerant pipe, and also do not have a kind of method that can effectively prevent icing of outdoor refrigerant pipe at present, therefore can't prevent this problem.In case the heat exchanger effectiveness that this problem not only can influence air-conditioner occurs, and long words of time also can cause the damage of pipeline.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind ofly can prevent effectively that freezing from appearring in outdoor refrigerant pipe in the kind of refrigeration cycle and cause that thus heat exchanger effectiveness descends and the method that is used to prevent icing of outdoor refrigerant pipe of air conditioner of pipeline damage.
In order to achieve the above object, the method that is used for preventing icing of outdoor refrigerant pipe of air conditioner provided by the invention is included in kind of refrigeration cycle utilization and is arranged on the S10 stage that temperature sensor on the outdoor refrigerant pipe detects the outdoor refrigerant pipe temperature; To the temperature of outdoor refrigerant pipe whether less than 0 ℃ of S20 stage of judging; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe greater than 0 ℃, then continue the S30 stage of operation compressor; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe less than 0 ℃, then close compressor and 3 minutes the S40 stage of delaying time immediately; To the temperature of outdoor refrigerant pipe whether greater than 7 ℃ of S50 stages of judging; If the judged result in S50 stage be the temperature of outdoor refrigerant pipe greater than 7 ℃, then restart the S60 stage of compressor; If with the judged result in S50 stage be the temperature of outdoor refrigerant pipe less than 7 ℃, then return the S40 stage.
Described kind of refrigeration cycle does not comprise Defrost operation.
Provided by the inventionly be used to prevent that the method for icing of outdoor refrigerant pipe of air conditioner from being to utilize the temperature sensor that is arranged on the outdoor refrigerant pipe to detect the temperature of outdoor refrigerant pipe, and control the operation of compressor according to this temperature, not only can prevent outdoor refrigerant pipe Yin Wendu from crossing low like this and the icing phenomenon that occurs and influence air-conditioner thermal efficiency problem, but also can prevent because of the long-time icing pipeline damage that causes.
Description of drawings
Be used to prevent that to provided by the invention the method for icing of outdoor refrigerant pipe of air conditioner is elaborated below in conjunction with the drawings and specific embodiments.
Fig. 1 is that the air-conditioner of prior art constitutes schematic diagram.
Fig. 2 is the method flow diagram that is used to prevent icing of outdoor refrigerant pipe of air conditioner provided by the invention.
The specific embodiment
As shown in Figure 2, provided by the invention being used for prevents that the method for icing of outdoor refrigerant pipe of air conditioner from comprising: the S10 stage that is arranged on the temperature sensor detection outdoor refrigerant pipe temperature on the outdoor refrigerant pipe kind of refrigeration cycle utilization; To the temperature of outdoor refrigerant pipe whether less than 0 ℃ of S20 stage of judging; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe greater than 0 ℃, then continue the S30 stage of operation compressor; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe less than 0 ℃, then close compressor and 3 minutes the S40 stage of delaying time immediately; To the temperature of outdoor refrigerant pipe whether greater than 7 ℃ of S50 stages of judging; If the judged result in S50 stage be the temperature of outdoor refrigerant pipe greater than 7 ℃, then restart the S60 stage of compressor; If with the judged result in S50 stage be the temperature of outdoor refrigerant pipe less than 7 ℃, then return the S40 stage.Described kind of refrigeration cycle does not comprise Defrost operation.When air-conditioner provided by the invention carries out kind of refrigeration cycle, 40 compressions of compressed machine and the refrigerant that becomes high-temperature high-pressure state are at first by cross valve 50 inflow outdoor heat exchangers 20, this refrigerant will dispel the heat to the outside in outdoor heat converter 20, and when flowing through expansion gear 30, significantly reducing its temperature and pressure, this low temperature, low pressure refrigerant are with inflow indoor heat exchanger 10 subsequently.This refrigerant will absorb the heat of surrounding air in indoor heat converter 10, flow back to again in the compressor 40 through cross valve 50 at last, circulate so repeatedly.If the user is desired is the cryogenic refrigeration operation, being positioned at outdoor refrigerant pipe temperature will reduce gradually, the temperature sensor that be installed on the outdoor refrigerant pipe this moment will detect the temperature of outdoor refrigerant pipe at any time, and send this temperature detection value to be arranged in indoor set or the off-premises station controller.In addition, controller moves the program that is used to prevent icing of outdoor refrigerant pipe of air conditioner provided by the invention at any time, in case the temperature of outdoor refrigerant pipe is lower than 0 ℃, it will be controlled immediately with close compressor 40, thereby can prevent that the decline of air-conditioner heat exchanger effectiveness and the pipeline damage problem of freezing and causing therefrom from appearring in outdoor refrigerant pipe, therefore can guarantee the normal operation of air-conditioner.
Claims (2)
1, a kind of method that is used to prevent icing of outdoor refrigerant pipe of air conditioner is characterized in that: the described method that is used for preventing icing of outdoor refrigerant pipe of air conditioner is included in kind of refrigeration cycle utilization and is arranged on the S10 stage that temperature sensor on the outdoor refrigerant pipe detects the outdoor refrigerant pipe temperature; To the temperature of outdoor refrigerant pipe whether less than 0 ℃ of S20 stage of judging; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe greater than 0 ℃, then continue the S30 stage of operation compressor; If the judged result in S20 stage be the temperature of outdoor refrigerant pipe less than 0 ℃, then close compressor and 3 minutes the S40 stage of delaying time immediately; To the temperature of outdoor refrigerant pipe whether greater than 7 ℃ of S50 stages of judging; If the judged result in S50 stage be the temperature of outdoor refrigerant pipe greater than 7 ℃, then restart the S60 stage of compressor; If with the judged result in S50 stage be the temperature of outdoor refrigerant pipe less than 7 ℃, then return the S40 stage.
2, air-conditioner according to claim 1 is characterized in that: described kind of refrigeration cycle does not comprise Defrost operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015741 CN1955591A (en) | 2005-10-28 | 2005-10-28 | Method for preventing icing of outdoor refrigerant pipe of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015741 CN1955591A (en) | 2005-10-28 | 2005-10-28 | Method for preventing icing of outdoor refrigerant pipe of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955591A true CN1955591A (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015741 Pending CN1955591A (en) | 2005-10-28 | 2005-10-28 | Method for preventing icing of outdoor refrigerant pipe of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1955591A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089364A (en) * | 2014-06-16 | 2014-10-08 | 华南理工大学 | On-line defrosting detection and control system and method for heat pump type electric automobile air conditioner |
-
2005
- 2005-10-28 CN CN 200510015741 patent/CN1955591A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089364A (en) * | 2014-06-16 | 2014-10-08 | 华南理工大学 | On-line defrosting detection and control system and method for heat pump type electric automobile air conditioner |
| CN104089364B (en) * | 2014-06-16 | 2017-05-31 | 华南理工大学 | A kind of defrosting of pump type heat electric automobile air conditioner on-line checking and control method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |