CN1888672A - Air conditioner indoor heat exchanger freezing preventing controlling method - Google Patents
Air conditioner indoor heat exchanger freezing preventing controlling method Download PDFInfo
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- CN1888672A CN1888672A CN 200510014371 CN200510014371A CN1888672A CN 1888672 A CN1888672 A CN 1888672A CN 200510014371 CN200510014371 CN 200510014371 CN 200510014371 A CN200510014371 A CN 200510014371A CN 1888672 A CN1888672 A CN 1888672A
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- temperature
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Abstract
This invention is about controlling method for preventing air conditioner indoor heat exchanger from icing. During air conditioner undertakes refrigerating operation, the refrigerants pipe temperature of indoor heat exchanger is perceived. If it is lower than or the same as the set first temperature, the rotational rate of indoor heat exchanger fan electric engine is set higher than certain rotational rate. The fan electric engine is operated to prevent indoor heat exchanger from icing due to temperature deviation of some parts. Thus, this invention can furthest prevent indoor heat exchanger from icing.
Description
Technical field
The invention relates to indoor heat exchanger freezing preventing controlling method { the Contr olprocess for restraining the frost of the indoor heat exchangerin air conditioner} of air-conditioner, when particularly suppressing the On/Off of compressor to greatest extent, the temperature of marquis's perception indoor heat converter is controlled the fan electromotor rotary speed of indoor blower when the cooling operation of air-conditioner, suppresses the air-conditioner control method of indoor heat exchanger freezing.
Background technology
The freezing preventing controlling method that describes existing air-conditioner in detail is as follows: general, detachable air conditioner is to be made of indoor set and off-premises station, indoor set is provided with indoor Air Blast fan and indoor heat converter, off-premises station is provided with compressor, outdoor heat converter, expansion valve, cubic valve and outdoor Air Blast fan, and indoor set is connected with the conduit of off-premises station by the refrigerant that flows.
So, air-conditioner is carried out cooling operation or is heated running according to the loop direction that cubic valve switches the decision refrigerant, during cooling operation, flow into come condensation compression refrigerant through cubic valve to outdoor heat converter from the refrigerant of compressor compresses, the refrigerant of condensation is supplied with to indoor heat converter by the refrigerant conduit after expanding by expansion valve, indoor heat converter carries out heat exchange for room air and refrigerant, and refrigerant absorbs the heat that comprises in the air that circulates in the indoor heat converter and discharges cold air to the indoor.
Here, according to the heat exchange of room air and refrigerant, indoor heat converter is that freezing temperature T freezes with the surface generation of next heat exchanger.
Therefore, froze in the air-conditioner running as above in order to prevent in the past, the temperature of indoor refrigerant conduit is that assigned temperature stops compressor following the time after the temperature of the indoor refrigerant conduit of perception, and the fan electromotor that stops indoor heat converter or indoor blower prevents freezing of indoor heat converter with the method for setting the rotary speed running.
But,, problems such as producing the part of freezing and leaks are again arranged still according to some position temperature deviation of surface of former above-mentioned indoor heat converter.
Summary of the invention
The present invention invents in order to solve above-mentioned prior art problems point, the objective of the invention is to, although provide on a kind of indoor heat converter of air-conditioner some position temperature deviation take place, in order to produce the high specified temp of icing temperature, the fan electromotor of indoor blower to be to drive the surface temperature that improves indoor heat converter than setting the higher rotary speed of rotary speed, prevents the indoor heat exchanger freezing preventing controlling method of the air-conditioner that freezes.
In order to achieve the above object, indoor heat exchanger freezing preventing controlling method according to air-conditioner of the present invention, it is characterized in that: in the cooling operation control method of air-conditioner, comprise the refrigerant conduit temperature of indoor heat converter in the perception driven compressor and judge that the refrigerant conduit temperature is the whether icing judgement stage below the freezing temperature T, if than below the 1st high temperature A of freezing temperature T the time, what the rotary speed of the fan electromotor of indoor heat exchange set that the high certain rotation speed of setting rotary speed than normal operation turns round for the 1st freezes and prevents the stage, conduit temperature is than being set at the 2nd temperature B higher than the 1st temperature A high the time, and the fan electromotor of indoor heat exchange returns to the 2nd stage of preventing of freezing of setting that rotary speed turns round and constitutes.
The indoor heat exchanger freezing preventing controlling method of described air-conditioner, it is characterized in that: the conduit temperature of indoor heat converter is freezing temperature T following the time in the judgement stage of freezing, and the fan electromotor rotary speed drives to set rotary speed when stopping the compressor of outdoor heat converter.
The indoor heat exchanger freezing preventing controlling method of described air-conditioner, it is characterized in that the 2nd freezes and to prevent in the stage that conduit temperature is the 3rd low temperature C of freezing temperature T following the time, the fan electromotor of indoor heat exchange is to set the rotary speed running when stopping the compressor of outdoor heat converter.
The indoor heat exchanger freezing preventing controlling method of described air-conditioner, it is characterized in that the 2nd freezes when preventing that conduit temperature is higher than the 3rd temperature C in the stage, for the conduit temperature of the indoor heat converter that rises is kept the 1st icing fan electromotor rotary speed in stage that prevents.
The effect of invention: the indoor heat exchanger freezing preventing controlling method of air-conditioner according to the present invention that constitutes as mentioned above is that the temperature of carrying out indoor heat converter in the running that prevents air-conditioner is reduced to icing the preventing the control stage below the freezing temperature, so problems such as leaking of removing that the other temperature deviation in indoor heat converter upper part can produce have the advantage that suppresses indoor heat exchanger freezing to greatest extent.
Description of drawings
Fig. 1 is the oblique view of diagram according to air-conditioner of the present invention.
Fig. 2 is the summary pie graph of diagram according to air-conditioner cooling operation of the present invention.
Fig. 3 is the pie graph of diagram according to air-conditioner of the present invention.
Fig. 4 is that the indoor heat exchanger freezing that illustrates according to air-conditioner of the present invention prevents controlling party
The precedence diagram of method.
The explanation of accompanying drawing major part symbol:
10: indoor set 11: indoor heat converter
12: indoor Air Blast fan 13: indoor Air Blast fan motor
14: indoor set control part 15: indoor catheter sensor
20: off-premises station 21: outdoor heat converter
22: outdoor Air Blast fan 23: outdoor Air Blast fan motor
24: fluid reservoir 25: compressor
26: cubic valve 27: outdoor catheter sensor
30: refrigerant conduit 10: driven compressor is judged the stage
S20: the driven compressor time is judged stage S30: freeze the judgement stage
S40: the 1st freezes prevents stage S50: the 2nd freezes prevents the stage
S60: the 3rd freezes prevents stage A: the 1st temperature
B: the 2nd temperature C: the 3rd temperature
T: freezing temperature
The specific embodiment
Below, be described in detail as follows with reference to the appended figure of possible embodiments of the present invention.Fig. 1 is the oblique view of diagram according to air-conditioner of the present invention, Fig. 2 is the summary pie graph of diagram according to air-conditioner cooling operation of the present invention, Fig. 3 is the pie graph of diagram according to air-conditioner of the present invention, and Fig. 4 is the precedence diagram of diagram according to the indoor heat exchanger freezing preventing controlling method of air-conditioner of the present invention.As Fig. 1, Fig. 2 or Fig. 3 diagram, air-conditioner according to the present invention is to be made of indoor set 10 and off-premises station 20, and indoor set 10 is to be connected by refrigerant conduit 30 with off-premises station 20.
Here, indoor set 10 comprises: interior heat exchanger 11, the fan electromotor 13 of indoor Air Blast fan 12 and indoor Air Blast fan 12, indoor set control part 14, constitute with the catheter sensor 15 of perception indoor heat converter 11 conduit temperatures, according to the signal controlling fan electromotor 13 of input in the indoor set control part 14.
The fan electromotor 23 of outdoor Air Blast fan 22 and outdoor Air Blast fan 22 in the off-premises station 20, fluid reservoir 24, compressor 25, four directions valve 26, expansion valve 28, the catheter sensor 28 of outdoor heat converter 21 and perception off-premises station control part 29 and the conduit temperature of outdoor heat converter 21 can be connected with communicating, and off-premises station control part 29 is according to sensing results control outdoor fan motor 23 and the drive division (not shown) of cubic valve and the drive division (not shown) of compressor of outdoor catheter sensor 28.
When having as constituted above the air-conditioner cooling operation, the storage liquid coolant has only gas coolant to be supplied with by fluid reservoir 24 in the refrigerant that compressor 25 sucks, the refrigerant of compression flow into the refrigerant that comes the condensation compression in the outdoor heat converter 21 through cubic valve 26 in compressor 25, the refrigerant of condensation is supplied with to indoor heat converter 11 by refrigerant conduit 30 after expanding by expansion valve 28, indoor heat converter 11 carries out heat exchange for room air and refrigerant to evaporate the refrigerant of expansion and cool off room air, and the refrigerant of evaporation is supplied with compression and carried out kind of refrigeration cycle repeatedly to compressor 25 again.
In addition, when air-conditioner is cooling operation, the fan electromotor 13 of indoor Air Blast fan 12 by the user with setting value-setting rotary speed running, and to the indoor air of heat exchange of sending on the indoor heat converter 11.
Here, the surface of indoor heat converter 11 is cooled off by refrigerant, so the temperature on indoor heat converter 11 surfaces is to specify below the freezing temperature T, then airborne steam freezes, and prevents in the air-conditioner of the present invention that the control algolithm of the fan electromotor 13 that freezes of indoor heat converter 11 from embodying with indoor set control part 14.
As shown in Figure 4, the freezing preventing controlling method of air-conditioner comprises when the driven compressor of the operating condition of judging compressor is judged in stage (S10) and the driven compressor, the judgement stage (S20) of judge the duration of runs of calculating compressor and the conduit temperature of indoor heat converter are that the 1st temperature A is with the next high certain rotation speed S50 of rotary speed that is set at than the existing setting rotary speed of fan electromotor driven compressor time, fan electromotor was kept and is set rotary speed S60 when the 2nd temperature B that ratio the 1st temperature A height is was also high, the 3rd temperature C lower than freezing temperature T stops the driven compressor of outdoor heat converter in the time of also low, and fan electromotor keep set rotary speed S60 prevent indoor heat converter freeze icingly prevent to control stage S40 to S60 and constitute.
Here, the conduit temperature of indoor heat converter outlet side conduit temperature preferably.
And, driven compressor judges that stage S10 is that indoor temperature reduction compressor may not turn round in the air-conditioner running, in order to judge these stage, carry out judgement stage S20 in the time of in the driven compressor in the driven compressor time, promptly, compressor is not kept the setting rotary speed of fan electromotor driving condition the time when not being such.
Freeze prevent the control stage comprise the conduit temperature of judging indoor heat converter than the little or whether identical icing judgement stage S30 of freezing temperature T and judge than the 1st temperature A the identical or whether low the 1st freeze prevent stage S40 and judge conduit temperature than the 2nd temperature B height whether the 2nd icingly prevent stage S50, judge the 1st icing prevent stage S40 afterwards conduit temperature than the 3rd temperature C identical or whether low the 3rd icingly prevent that stage S60 from constituting.
Here, the 2nd temperature B is the highest among the 1st, 2,3 temperature A, B, the C, and the 3rd temperature C is minimum.
And, send the more wind of volume to set the fan electromotor that addition specifies the rotary speed of rotary speed to drive indoor blower on the rotary speed to indoor heat converter when the 1st temperature A that the refrigerant conduit temperature that the 1st freezes prevents indoor heat converter among the stage S40 is higher than freezing temperature T is identical or low, the air of being blown improves the surface temperature of indoor heat converter.
But the fan electromotor of indoor blower was kept the setting rotary speed when refrigerant conduit temperature of indoor heat converter was higher than the 1st temperature A.
In addition, the refrigerant conduit temperature that the 2nd freezes prevents indoor heat converter among the stage S50 freezes by the 1st and prevents that stage S40, the 2nd temperature B higher than the 1st temperature A from recovering the 1st icing lower setting rotary speed of rotary speed of stage S40 that prevents and rotating the fan electromotor of indoor blower in the time of higher.
Then, the refrigerant conduit temperature that the 3rd freezes prevents indoor heat converter among the stage S60 has passed through the 1st icing stage S40 that prevents, when but the 3rd temperature C lower than freezing temperature T is lower, the fan electromotor of indoor blower improves the surface temperature of indoor heat converter to set after rotary speed drives when stopping the compressor of outdoor heat converter and outdoor draft fan.
But the refrigerant conduit temperature of indoor heat converter has passed through the 1st icing stage S40 that prevents, in the time of still high than the 3rd temperature C, for the surface temperature that improves indoor heat converter returns to the 1st icing stage S45 that prevents.
Thereupon, freezing prevents stage S40 to S60 when the refrigerant conduit temperature of indoor heat converter is low than the 1st temperature A, problem such as leak that the rotary speed of the fan electromotor of indoor heat converter prevents with the surface temperature of setting rotary speed and adding that the rotary speed fan motor of the rotary speed of appointment improves indoor heat converter that position temperature deviation generation icing of the refrigerant conduit temperature of perception indoor heat converter from causing.
As mentioned above, be illustrated with reference to figure, but the present invention is not confined to the embodiment and the figure of the explanation of this specification, can in the scope of technological thought protection, uses according to the indoor heat exchanger freezing preventing controlling method of air-conditioner of the present invention.
Claims (4)
1, a kind of indoor heat exchanger freezing preventing controlling method of air-conditioner, it is characterized in that in the cooling operation control method of air-conditioner, comprise the refrigerant conduit temperature of indoor heat converter in the perception driven compressor and judge that the refrigerant conduit temperature is the whether icing judgement stage below the freezing temperature T, if than below the 1st high temperature A of freezing temperature T the time, what the rotary speed of the fan electromotor of indoor heat exchange set that the high certain rotation speed of setting rotary speed than normal operation turns round for the 1st freezes and prevents the stage, conduit temperature is than being set at the 2nd temperature B higher than the 1st temperature A high the time, and the fan electromotor of indoor heat exchange returns to the 2nd stage of preventing of freezing of setting that rotary speed turns round and constitutes.
2, according to the indoor heat exchanger freezing preventing controlling method of claim 1 described air-conditioner, the conduit temperature of indoor heat converter that it is characterized in that freezing in the judgement stage is freezing temperature T following the time, and the fan electromotor rotary speed drives to set rotary speed when stopping the compressor of outdoor heat converter.
3, according to the indoor heat exchanger freezing preventing controlling method of claim 1 described air-conditioner, it is characterized in that the 2nd freezes and to prevent in the stage that conduit temperature is the 3rd low temperature C of freezing temperature T following the time, the fan electromotor of indoor heat exchange is to set the rotary speed running when stopping the compressor of outdoor heat converter.
4, according to the indoor heat exchanger freezing preventing controlling method of claim 1 described air-conditioner, it is characterized in that the 2nd freeze prevent that conduit temperature is than the 3rd temperature C in the stage) high the time, for the conduit temperature of the indoor heat converter that rises is kept the 1st icing fan electromotor rotary speed in stage that prevents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014371 CN1888672A (en) | 2005-06-30 | 2005-06-30 | Air conditioner indoor heat exchanger freezing preventing controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014371 CN1888672A (en) | 2005-06-30 | 2005-06-30 | Air conditioner indoor heat exchanger freezing preventing controlling method |
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| Publication Number | Publication Date |
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| CN1888672A true CN1888672A (en) | 2007-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014371 Pending CN1888672A (en) | 2005-06-30 | 2005-06-30 | Air conditioner indoor heat exchanger freezing preventing controlling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022798B (en) * | 2009-09-14 | 2013-07-10 | 财团法人资讯工业策进会 | Temperature control system, temperature control device, air conditioning device and temperature control method |
| CN104913461A (en) * | 2015-07-01 | 2015-09-16 | 珠海格力电器股份有限公司 | Control method of multi-connected set, and multi-connected set |
| CN104930669A (en) * | 2015-07-07 | 2015-09-23 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN111623483A (en) * | 2020-04-28 | 2020-09-04 | 海信（山东）空调有限公司 | Air conditioner and protection method thereof |
| CN114440400A (en) * | 2022-01-18 | 2022-05-06 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
-
2005
- 2005-06-30 CN CN 200510014371 patent/CN1888672A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022798B (en) * | 2009-09-14 | 2013-07-10 | 财团法人资讯工业策进会 | Temperature control system, temperature control device, air conditioning device and temperature control method |
| CN104913461A (en) * | 2015-07-01 | 2015-09-16 | 珠海格力电器股份有限公司 | Control method of multi-connected set, and multi-connected set |
| CN104930669A (en) * | 2015-07-07 | 2015-09-23 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN104930669B (en) * | 2015-07-07 | 2017-10-27 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN111623483A (en) * | 2020-04-28 | 2020-09-04 | 海信（山东）空调有限公司 | Air conditioner and protection method thereof |
| CN114440400A (en) * | 2022-01-18 | 2022-05-06 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN114440400B (en) * | 2022-01-18 | 2023-10-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
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