CN101526257A - Method for protecting compressor when air conditioner makes heat in high temperature environment - Google Patents
Method for protecting compressor when air conditioner makes heat in high temperature environment Download PDFInfo
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- CN101526257A CN101526257A CN200910097024A CN200910097024A CN101526257A CN 101526257 A CN101526257 A CN 101526257A CN 200910097024 A CN200910097024 A CN 200910097024A CN 200910097024 A CN200910097024 A CN 200910097024A CN 101526257 A CN101526257 A CN 101526257A
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Abstract
The invention discloses a method for protecting a compressor when an air conditioner makes heat in the high temperature environment. The method can prolong the service life of the compressor, prolong the heat-making time of the air conditioner and shortens the interval time of the shutting-down of the air conditioner. When the temperature of a pipe coil of an indoor exchanger of the air conditioner is more than or equal to 52 DEG C, the wind velocity of an indoor blower is high; when the temperature of the pipe coil of the indoor exchanger of the air conditioner is more than or equal to 56 DEG C, a central microprocessor shuts down an outdoor blower of the air conditioner; when the temperature of the pipe coil of the indoor exchanger of the air conditioner is more than or equal to 65 DEG C, the central microprocessor shuts down the compressor of the air conditioner; when the temperature of the pipe coil of the indoor exchanger of the air conditioner is less than or equal to 50 DEG C, the air conditioner reverts to the working state before the moment when the temperature of the pipe coil of the indoor exchanger is more than or equal to 52 DEG C.
Description
Technical field
The present invention relates to air-conditioning technical field, specifically is a kind of guard method of the compressor when being used for air conditioner makes heat in high temperature environment.
Background technology
Air-conditioner all has two big basic working modes at present, promptly freeze and heat, because user's regional disparity and installation environment are different, cause air-conditioning under the varying environment temperature, to be worked, no matter air-conditioner is refrigeration and heats, the size of its load all has direct relation with the height of environment temperature, when air-conditioning still uses when heating up to (such as bathing place or hot pot city) more than 20 ℃ in environment temperature, the compressor air suction increased pressure, this moment compressor also corresponding the increasing of pressure at expulsion, increased exhaust temperatures, the temperature rise of compressor is also just high more, and the temperature rise of compressor will cause compressor electric motor winding insulation performance to reduce, and causes compressor shortening in service life, even burn compressor, like this, often cause the user seriously discontented, complain, move back machine, the financial burden of bringing tremendous loss and causing enterprise for the brand of enterprise.
The guard method of existing compressor when being used for air conditioner makes heat in high temperature environment generally is to utilize the autoprotection device of compressor to protect compressor, but the autoprotection device has following defective, because the protective condition of autoprotection device is established than higher, generally be when the operating temperature of compressor is higher than 130 ℃, described autoprotection device just falls compressor protection, it is the temporary close compressor, heat up to using more than 20 ℃ in environment temperature, the operating temperature of compressor is can be very fast soaring until above 130 ℃, the time that heats of air-conditioning is short, and compressor is in nearly 130 ℃ of work down, can cause compressor electric motor winding insulation variation, reduce the service life of compressor; After compressor is by the autoprotection unit protection; because generally being the temperature that will wait until compressor, the autoprotection device just can reset when being 50 ℃ of left and right sides; compressor could start once more then; so must shutting down one long period (generally being more than half an hour), just can restart after the operating temperature of compressor is lowered by air-conditioning; like this; the downtime of air-conditioning is just long; the user obviously experiences air-conditioning and has shut down; after this situation repeatedly takes place; the user will feel this brand air-conditioning work poor reliability; can't use continuously, promptly user satisfaction is poor, and this will directly cause the brand loss and the sales volume of this brand air-conditioning to reduce.
Summary of the invention
The technical problem to be solved in the present invention is; overcome the shortcoming of above prior art, provide a kind of service life, air-conditioning that can when air conditioner makes heat in high temperature environment, prolong compressor to heat the guard method of the compressor that the time is long, the air-conditioning shutdown intervals time is short when being used for air conditioner makes heat in high temperature environment.
Technical scheme of the present invention is, provide a kind of have following control procedure be used for air conditioner makes heat in high temperature environment the time the guard method of compressor,
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 52 ℃, if the wind speed of the indoor fan of current air-conditioning is not a high speed winds, the central microprocessor of air-conditioning switches to high speed winds with the wind speed of indoor fan so, if the wind speed of the indoor fan of current air-conditioning is a high speed winds, will to keep the wind speed of indoor fan be high speed winds to the central microprocessor of air-conditioning so;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 56 ℃, described central microprocessor is closed the outdoor fan of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 65 ℃, described central microprocessor is closed the compressor of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning was less than or equal to 50 ℃, air-conditioning reverted to described indoor heat exchanger coil temperature more than or equal to the residing duty before 52 ℃ of these moment.
After adopting said method, the present invention compared with prior art, have following remarkable advantage and beneficial effect: be provided with the duty that a plurality of judgement temperature (52 ℃, 56 ℃, 65 ℃, 50 ℃) are controlled air-conditioning in the technical scheme of the present invention, guarantee that compressor works under a lower operating temperature, make the corresponding prolongation of working time of compressor, be air-conditioning to heat the time ratio prior art longer, and, prolonged service life of compressor; When indoor heat exchanger coil temperature during more than or equal to 52 ℃, after central microprocessor samples this temperature spot, pressure switches to high speed winds with the wind speed of indoor fan, the heat exchange effect that increases indoor heat exchanger reduces the pressure at expulsion of compressor, thereby reduce the delivery temperature of compressor, reach the temperature or the rate of rise in temperature that reduce the compressor electric motor winding, the protection compressor; If compressor exhaust temperature still continues to rise, the indoor heat exchanger coil temperature equally also can continue to rise, central microprocessor again can real-time sampling indoor heat exchanger coil temperature, when indoor heat exchanger coil temperature during more than or equal to 56 ℃, central microprocessor forces to turn off outdoor fan, reduce the exchange capability of heat of outdoor heat exchanger, thereby reduce the pressure of inspiration(Pi) of compressor, compressor air suction pressure reduces the pressure at expulsion that will make compressor and reduces, thereby reach the exhaust temperature rise that reduces compressor, alleviate the load of compressor, reduce the compressor winding temperature rise, realize the two-fold protection; If the delivery temperature of compressor still rises, the indoor heat exchanger coil temperature also can continue to raise, when central microprocessor detects the indoor heat exchanger coil temperature more than or equal to 65 ℃, this moment, the delivery temperature of compressor was about 120 ℃, central microprocessor is with the positive closing compressor, realize the protection of compressor operation suspension, when the indoor heat exchanger coil temperature is less than or equal to 50 ℃, this moment, the delivery temperature of compressor was about 100 ℃, air-conditioning reverts to described indoor heat exchanger coil temperature automatically more than or equal to the residing duty before 52 ℃ of these moment, realizes the compressor triple protection; Compressor operation suspension guard time was generally three to five minutes, after promptly three to five minutes, the indoor heat exchanger coil temperature is less than or equal to 50 ℃, air-conditioning just can restart, this is than much shorter downtime of prior art, the user can obviously not experience air-conditioning and shut down, and has improved user satisfaction, has reduced the economic loss of Air-conditioning Enterprise; The guard method of the compressor when in sum, the present invention is used for air conditioner makes heat in high temperature environment can prolong service life, the air-conditioning shutdown intervals time of compressor when air conditioner makes heat in high temperature environment short.
The specific embodiment
Below the invention will be further described.
The guard method of the compressor that the present invention is a kind of when being used for air conditioner makes heat in high temperature environment has following control procedure,
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 52 ℃, if the wind speed of the indoor fan of current air-conditioning is not a high speed winds, the central microprocessor of air-conditioning switches to high speed winds with the wind speed of indoor fan so, if the wind speed of the indoor fan of current air-conditioning is a high speed winds, will to keep the wind speed of indoor fan be high speed winds to the central microprocessor of air-conditioning so;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 56 ℃, described central microprocessor is closed the outdoor fan of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 65 ℃, described central microprocessor is closed the compressor of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning was less than or equal to 50 ℃, air-conditioning reverted to described indoor heat exchanger coil temperature more than or equal to the residing duty before 52 ℃ of these moment.
Described central microprocessor is generally the single-chip microcomputer of air-conditioning.
The temperature of described indoor heat exchanger coil pipe can detect by thermistor, and the signal that samples by thermistor is admitted to the single-chip microcomputer of air-conditioning, use for the single-chip microcomputer of air-conditioning, and all be prior art.
Claims (1)
1, a kind of guard method of the compressor when being used for air conditioner makes heat in high temperature environment is characterized in that:
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 52 ℃, if the wind speed of the indoor fan of current air-conditioning is not a high speed winds, the central microprocessor of air-conditioning switches to high speed winds with the wind speed of indoor fan so, if the wind speed of the indoor fan of current air-conditioning is a high speed winds, will to keep the wind speed of indoor fan be high speed winds to the central microprocessor of air-conditioning so;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 56 ℃, described central microprocessor is closed the outdoor fan of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning during more than or equal to 65 ℃, described central microprocessor is closed the compressor of air-conditioning;
When the indoor heat exchanger coil temperature of air-conditioning was less than or equal to 50 ℃, air-conditioning reverted to described indoor heat exchanger coil temperature more than or equal to the residing duty before 52 ℃ of these moment.
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| CN2009100970242A CN101526257B (en) | 2009-03-26 | 2009-03-26 | Method for protecting compressor when air conditioner makes heat in high temperature environment |
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| CN2009100970242A CN101526257B (en) | 2009-03-26 | 2009-03-26 | Method for protecting compressor when air conditioner makes heat in high temperature environment |
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| CN101526257A true CN101526257A (en) | 2009-09-09 |
| CN101526257B CN101526257B (en) | 2010-11-10 |
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