CN104848738A - Cleaning method and device for indoor heat exchanger of air conditioner - Google Patents

Cleaning method and device for indoor heat exchanger of air conditioner Download PDF

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Publication number
CN104848738A
CN104848738A CN201510195712.8A CN201510195712A CN104848738A CN 104848738 A CN104848738 A CN 104848738A CN 201510195712 A CN201510195712 A CN 201510195712A CN 104848738 A CN104848738 A CN 104848738A
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China
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heat exchanger
indoor heat
cleaning
frosting
completes
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CN201510195712.8A
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Chinese (zh)
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CN104848738B (en
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田翔
吴俊鸿
魏广飞
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珠海格力电器股份有限公司
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Abstract

The invention discloses a cleaning method and device for an indoor heat exchanger of an air conditioner. The cleaning method for the indoor heat exchanger of the air conditioner comprises the steps that 1, the air conditioner is controlled to operate in a refrigerating mode, an indoor draught fan is switched off, the surface of the indoor heat exchanger is frosted, and whether frosting is completed is judged; 2, after frosting is completed, the air conditioner is controlled to operate in a heating mode, the indoor draught fan is switched on, the frost on the surface of the indoor heat exchanger is converted into water, and whether defrosting is completed is judged; 3, after defrosting is completed, the temperature T of an inner tube of the indoor heat exchanger is controlled to be a first preset temperature TS1, the temperature TS1 of the inner tube of the indoor heat exchanger is kept for a first preset time tS1, and cleaning is completed. By the adoption of the cleaning method for the indoor heat exchanger of the air conditioner, cleaning of the indoor heat exchanger of the air conditioner can be achieved, no part is additionally arranged, cost is not increased, the high-temperature sterilizing function is achieved, and the comfort and health of a user are further improved.

Description

The clean method of air-conditioning indoor heat exchanger and device
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of clean method and device of air-conditioning indoor heat exchanger.
Background technology
During existing air-conditioner work, indoor heat exchanger contacts with air in real time, carries out heat exchange.Owing to containing dust in air, after long time sedimentation, indoor heat exchanger heat exchanger effectiveness is reduced, and easy breed bacteria wherein, affect health of people.
At present, most air-conditioner adopts the mode of filter screen filtration except the impurity in air, but, for very tiny floating dust and suspend aerial bacterium cannot filtering outside, therefore cleaning effect is undesirable.
In order to solve the problem, Chinese patent (CN101256061A) discloses a kind of cleaning method of A/C evaporator, its first fast-refrigerating, utilize the steam in air fast in evaporator surface frosting or icing, then heat fast, after evaporator surface frost or ice are heated, become dust or other the tiny foreign material that water-band walks surface, and drying evaporator, ventilate again, dry up the moisture accumulate in evaporimeter further.Although this cleaning method can realize the cleaning of air-conditioning indoor heat exchanger, and do not need to increase any parts and cost, this cleaning method can not realize the sterilizing function of air-conditioning indoor heat exchanger, and cleaning effect is left to be desired.
Summary of the invention
For above-mentioned prior art present situation, the invention provides a kind of clean method of air-conditioning indoor heat exchanger, air-conditioning indoor heat exchanger can be made to realize the function of good cleaning and sterilization.
In order to solve the problems of the technologies described above, the clean method of a kind of air-conditioning indoor heat exchanger provided by the present invention, comprises the steps:
S1, control air conditioner refrigerating mode operation, close chamber's inner blower, makes indoor heat exchanger surface frosting, and judges whether that frosting completes;
After S2, frosting complete, control air-conditioning heating mode operation, open indoor fan, make the frost on indoor heat exchanger surface be converted into water, and judge whether that defrost completes; And
After S3, defrost complete, control the interior pipe temperature T of indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1after, clean end.
Wherein in an embodiment, in described step S3, work as T interior pipe< T s1time, reduce indoor fan wind shelves, work as T interior pipe> T s1time, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, reduce the capacity of compressor; Wherein, T maxfor the maximum temperature that air-conditioning system allows, T max> T s1.
Wherein in an embodiment, 45 DEG C≤T s1≤ 75 DEG C.
Wherein in an embodiment, 10min≤t s1≤ 120min.
Wherein in an embodiment, in described step S1, judge whether that frosting completes and be specially:
Work as T interior pipe≤ the second preset temperature T s2, and the second preset time t is kept under this temperature conditions s2after, frosting completes, otherwise frosting does not complete; Wherein, one 35 DEG C≤T s2≤ 0 DEG C, 10min≤t s2≤ 120min.
Wherein in an embodiment, work as T interior pipe≤ T mintime, open the capacity of indoor fan or reduction compressor, wherein, T minfor the minimum temperature that air-conditioning system allows, T min< T s2.
Wherein in an embodiment, described cleaning method also comprises the following steps be arranged at before described step S1:
S0, control air conditioner refrigerating mode operation, inner blower minimum wind shelves in control room run, and frost-free while making indoor heat exchanger surface have elutriation to go out, judges whether that condensation completes, if so, proceed to described step S1.
Wherein in an embodiment, in described step S0, judge whether that condensation completes and be specially:
Work as T interior pipe≤ T dew, and the 3rd preset time t is kept under this temperature conditions s3after, condensation completes, otherwise condensation does not complete; Wherein, T dewfor the dew-point temperature of indoor air, 3min≤t s3≤ 30min.
Wherein in an embodiment, in described step S2, judge whether that defrost completes and be specially:
Work as T interior pipe≤ the four preset temperature T s4, and the 4th preset time t is kept under this temperature conditions s4after, defrost completes, otherwise defrost does not complete; Wherein, 45 DEG C≤T s4≤ 75 DEG C, 10min≤t s4≤ 30min.Another technical problem to be solved by this invention is, provide a kind of cleaning device of air-conditioning indoor heat exchanger, it comprises:
Frosting module, described frosting module is for controlling air conditioner refrigerating mode operation, and close chamber's inner blower, makes indoor heat exchanger surface frosting, and judge whether that frosting completes;
Defrost module, described defrost module, for controlling air-conditioning heating mode operation, opens indoor fan, makes the frost on indoor heat exchanger surface be converted into water, and judges whether that defrost completes; And
Sterilization module, described sterilization module is for controlling the interior pipe temperature T of indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1.
Wherein in an embodiment, described sterilization module comprises:
High voltage protective module, described high voltage protective module is used for working as T interior pipe< T s1time, reduce indoor fan wind shelves, work as T interior pipe> T s1time, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, reduce the capacity of compressor; Wherein, T maxfor the maximum temperature that air-conditioning system allows, T max> T s1.
Wherein in an embodiment, described cleaning device also comprises:
Condensation module, described condensation module is for controlling air conditioner refrigerating mode operation, and inner blower minimum wind shelves in control room run, frost-free while making indoor heat exchanger surface have elutriation to go out, and judges whether that condensation completes.
Compared with prior art, the clean method of air-conditioning indoor heat exchanger of the present invention and device, can realize the cleaning of air-conditioning indoor heat exchanger, do not increase any parts, do not increase cost; And after defrost completes, continue to run heating mode, and control the interior pipe temperature T of indoor heat exchanger interior pipeat the first preset temperature T s1keep the first preset time t s1, thus realize the high temperature sterilization function of indoor heat exchanger, promote the comfortableness of user further, be conducive to user's body health.
The beneficial effect that additional technical feature of the present invention has will be described in this description detailed description of the invention part.
Accompanying drawing explanation
Fig. 1 is the flow chart of the clean method of air-conditioning indoor heat exchanger in the embodiment of the present invention one;
Fig. 2 is the flow chart of the clean method of air-conditioning indoor heat exchanger in the embodiment of the present invention two;
Fig. 3 is the structural representation of the cleaning device of air-conditioning indoor heat exchanger in the embodiment of the present invention three.
Detailed description of the invention
And the present invention is described in detail in conjunction with the embodiments below with reference to the accompanying drawings.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
The clean method of a kind of air-conditioning indoor heat exchanger provided by the invention and device, can realize the cleaning of air-conditioning indoor heat exchanger, can realize the high temperature sterilization function of air-conditioning indoor heat exchanger simultaneously.Below by specific embodiment, the present invention is described in detail.In the following each embodiment of the present invention, the compressor of air-conditioning is frequency-changeable compressor.
Embodiment one
Fig. 1 is the flow chart of the clean method of air-conditioning indoor heat exchanger in the embodiment of the present invention one.As shown in Figure 1, the clean method of the air-conditioning indoor heat exchanger in the embodiment of the present invention one comprises the following steps:
Step S101, user set " cleaning ".
Step S102, after controller receives the instruction of " cleaning ", control air conditioner refrigerating mode operation, close chamber's inner blower, and to control compressor frequency be frosting frequency F frosting, make indoor heat exchanger surface frosting;
Step S103, judge whether that frosting completes.
Preferably, judge whether that frosting completes to be specially: as pipe temperature T in indoor heat exchanger interior pipe≤ the second preset temperature T s2, and the second preset time t is kept under this temperature conditions s2after, frosting completes, otherwise frosting does not complete; Wherein ,-35 DEG C≤T s2≤ 0 DEG C, 10min≤t s2≤ 120min, further preferably ,-20 DEG C≤T s2≤-18 DEG C, 15min≤t s2≤ 60min.
In the frosting stage, because indoor fan is closed, and compressor is in higher frequency, and therefore low pressure can be very low; And because low pressure is very low, indoor heat exchanger frosting can be very thick, can low pressure be caused further lower; Under many circumstances, lower than the minimum pressure specified in compressor specifications, in order to ensure low pressure reliability, T can be worked as interior pipe≤ T mintime, open the frequency of indoor fan or reduction compressor, control interior Guan Wen by adjustment indoor fan rotating speed and compressor frequency, thus control the low pressure of refrigeration system, do not allow it too low, play low-voltage variation effect.Wherein, T minfor the minimum temperature that air-conditioning system allows, usually determined by the compressor specifications of air-conditioning system, can avoid that the temperature of system is too low like this, lubricating oil separates out, thus improve the reliability of air-conditioning system, T min< T s2.
After step S104, frosting complete, control air-conditioning heating mode operation, open indoor fan, and to control compressor frequency be defrost frequency F defrost, make the frost on indoor heat exchanger surface be converted into water.By the frosting stage to the defrost stage, need refrigeration mode to switch to heating mode, in transfer process, compressor shutdown cross valve commutates, or cross valve commutation do not shut down by compressor, can.
Step S105, judge whether that defrost completes.
Preferably, judge whether that defrost completes to be specially:
Work as T interior pipe≤ the four preset temperature T s4, and the 4th preset time t is kept under this temperature conditions s4after, defrost completes, otherwise defrost does not complete; Wherein, 45 DEG C≤T s4≤ 75 DEG C, 10min≤t s4≤ 30min, further preferably, 50 DEG C≤T s4≤ 60 DEG C, 15min≤t s4≤ 25min.
After step S106, defrost complete, control the interior pipe temperature T of indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1.Preferably, 45 DEG C≤T s1≤ 75 DEG C, 10min≤t s1≤ 120min, further preferably, 50 DEG C≤T s1≤ 60 DEG C, 20min≤t s1≤ 60min.
Sterilization stage, in order to by T interior pipecontrol between 45 DEG C ~ 75 DEG C, work as T interior pipeduring < 45 DEG C, reduce indoor fan wind shelves, work as T interior pipeduring > 75 DEG C, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, at F defrostbasis on carry out frequency reducing, reduce the capacity of compressor, thus the high pressure controlling refrigeration system can not be too high, plays high voltage protective effect; Wherein, T maxfor the maximum temperature that air-conditioning system allows, usually determined by the compressor specifications of air-conditioning system, like this can the high pressure of control system can not be too high, thus improve the reliability of air-conditioning system, T max> T s1.
Step S107, clean end.
To sum up, the clean method of the air-conditioning indoor heat exchanger of the present embodiment, can realize the cleaning of air-conditioning indoor heat exchanger, realizes the high temperature sterilization function of air-conditioning indoor heat exchanger simultaneously, promotes the comfortableness of user further, is conducive to user's body health simultaneously.And, there is low-temperature protection and high temperature protection function, improve the security of air-conditioning system.
Embodiment two
Fig. 2 is the flow chart of the clean method of air-conditioning indoor heat exchanger in the embodiment of the present invention two.As shown in Figure 2, the step of the clean method of the air-conditioning indoor heat exchanger in the embodiment of the present invention two is substantially identical with embodiment one, and difference is: before frosting step, be also provided with condensation step.Specific as follows:
Step S201, user set " cleaning ".
Step S202, after controller receives the instruction of " cleaning ", control air conditioner refrigerating mode operation, inner blower minimum wind shelves in control room run, frost-free while making indoor heat exchanger surface have elutriation to go out.In the condensation stage, frost-free while indoor heat exchanger surface has elutriation to go out, makes there is certain extension water between indoor heat exchanger fin, and like this in the frosting stage, frosting can be relatively rapider, and frosting is thicker, can improve cleaning performance.
Step S203, judge whether that condensation completes, if so, proceed to step S204.
More preferably, judge whether that condensation completes to be specially:
Work as T interior pipe≤ T dew, and the 3rd preset time t is kept under this temperature conditions s3after, condensation completes, otherwise condensation does not complete; Wherein, T dewfor the dew-point temperature of indoor air, indoor is had to the air-conditioning of humidity sensor, dew-point temperature can be drawn by inner ring temperature and indoor relative humidity calculation.For the air-conditioning not having humidity sensor, by inner ring temperature estimation dew point temperature.Preferably, 3min≤t s3≤ 30min.
Step S204, control air conditioner refrigerating mode operation, close chamber's inner blower, and to control compressor frequency be frosting frequency F frosting, make indoor heat exchanger surface frosting.
Step S205, judge whether that frosting completes.Judge whether that the concrete steps that frosting completes are identical with embodiment one.
After step S206, frosting complete, control air-conditioning heating mode operation, open indoor fan, and to control compressor frequency be defrost frequency F defrost, make the frost on indoor heat exchanger surface be converted into water.
Step S207, judge whether that defrost completes.Judge whether that the concrete steps that defrost completes are identical with embodiment one.
After step S208, defrost complete, control the interior pipe temperature T of indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1.
Step S209, clean end.
Embodiment three
According to said method embodiment of the present invention, present invention also offers a kind of cleaning device of air-conditioning indoor heat exchanger, Fig. 3 is the structural representation of the cleaning device of air-conditioning indoor heat exchanger according to the embodiment of the present invention three.
As shown in Figure 3, this cleaning device comprises frosting module 31, defrost module 32 and sterilization module 33, and described frosting module 31 is for controlling air conditioner refrigerating mode operation, and close chamber's inner blower, makes indoor heat exchanger surface frosting, and judge whether that frosting completes; Described defrost module 32, for controlling air-conditioning heating mode operation, opens indoor fan, makes the frost on indoor heat exchanger surface be converted into water, and judges whether that defrost completes; Described sterilization module 33 is for controlling pipe temperature T in indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1.Described sterilization module 33 comprises high voltage protective module, and described high voltage protective module is used for working as T interior pipe< T s1time, reduce indoor fan wind shelves, work as T interior pipe> T s1time, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, reduce the capacity of compressor; Wherein, T maxfor the maximum temperature that air-conditioning system allows, T max> T s1.Preferably, this cleaning device also comprises condensation module 34, and described condensation module 34 is for controlling air conditioner refrigerating mode operation, and inner blower minimum wind shelves in control room run, frost-free while making indoor heat exchanger surface have elutriation to go out, and judges whether that condensation completes.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (12)

1. a clean method for air-conditioning indoor heat exchanger, is characterized in that, comprises the steps:
S1, control air conditioner refrigerating mode operation, close chamber's inner blower, makes indoor heat exchanger surface frosting, and judges whether that frosting completes;
After S2, frosting complete, control air-conditioning heating mode operation, open indoor fan, make the frost on indoor heat exchanger surface be converted into water, and judge whether that defrost completes; And
After S3, defrost complete, control the interior pipe temperature T of indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1after, clean end.
2. cleaning method according to claim 1, is characterized in that, in described step S3, works as T in pipe< T s1time, reduce indoor fan wind shelves, work as T interior pipe> T s1time, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, reduce the capacity of compressor; Wherein, T maxfor the maximum temperature that air-conditioning system allows, T max> T s1.
3. cleaning method according to claim 1 and 2, is characterized in that, 45 DEG C≤T s1≤ 75 DEG C.
4. cleaning method according to claim 1, is characterized in that, 10min≤t s1≤ 120min.
5. cleaning method according to claim 1, is characterized in that, in described step S1, judges whether that frosting completes and is specially:
Work as T interior pipe≤ the second preset temperature T s2, and the second preset time t is kept under this temperature conditions s2after, frosting completes, otherwise frosting does not complete; Wherein ,-35 DEG C≤T s2≤ 0 DEG C, 10min≤t s2≤ 120min.
6. cleaning method according to claim 5, is characterized in that, works as T interior pipe≤ T mintime, open the capacity of indoor fan or reduction compressor, wherein, T minfor the minimum temperature that air-conditioning system allows, T min< T s2.
7. cleaning method according to claim 1, is characterized in that, also comprises the following steps be arranged at before described step S1:
S0, control air conditioner refrigerating mode operation, inner blower minimum wind shelves in control room run, and frost-free while making indoor heat exchanger surface have elutriation to go out, judges whether that condensation completes, if so, proceed to described step S1.
8. cleaning method according to claim 7, is characterized in that, in described step S0, judges whether that condensation completes and is specially:
Work as T interior pipe≤ T dew, and the 3rd preset time t is kept under this temperature conditions s3after, condensation completes, otherwise condensation does not complete; Wherein, T dewfor the dew-point temperature of indoor air, 3min≤t s3≤ 30min.
9. cleaning method according to claim 1, is characterized in that, in described step S2, judges whether that defrost completes and is specially:
Work as T interior pipe≤ the four preset temperature T s4, and the 4th preset time t is kept under this temperature conditions s4after, defrost completes, otherwise defrost does not complete; Wherein, 45 DEG C≤T s4≤ 75 DEG C, 10min≤t s4≤ 30min.
10. a cleaning device for air-conditioning indoor heat exchanger, is characterized in that, comprising:
Frosting module (31), described frosting module (31) is for controlling air conditioner refrigerating mode operation, and close chamber's inner blower, makes indoor heat exchanger surface frosting, and judge whether that frosting completes;
Defrost module (32), described defrost module (32), for controlling air-conditioning heating mode operation, opens indoor fan, makes the frost on indoor heat exchanger surface be converted into water, and judges whether that defrost completes; And
Sterilization module (33), described sterilization module (33) is for controlling pipe temperature T in indoor heat exchanger interior pipebe the first preset temperature T s1, and at T s1lower maintenance first preset time t s1.
11. cleaning devices according to claim 10, is characterized in that, described sterilization module (33) comprising:
High voltage protective module, described high voltage protective module is used for working as T interior pipe< T s1time, reduce indoor fan wind shelves, work as T interior pipe> T s1time, improve indoor fan wind shelves, when indoor fan reaches the highest wind shelves and T interior pipe>=T maxtime, reduce the capacity of compressor; Wherein, T maxfor the maximum temperature that air-conditioning system allows, T max> T s1.
12. cleaning devices according to claim 10, is characterized in that, described cleaning device also comprises:
Condensation module (34), described condensation module (34) is for controlling air conditioner refrigerating mode operation, and inner blower minimum wind shelves in control room run, frost-free while making indoor heat exchanger surface have elutriation to go out, and judges whether that condensation completes.
CN201510195712.8A 2015-04-22 2015-04-22 The clean method and device of air-conditioning indoor heat exchanger CN104848738B (en)

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