CN114294739A - Air conditioner and self-cleaning method thereof - Google Patents
Air conditioner and self-cleaning method thereof Download PDFInfo
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- CN114294739A CN114294739A CN202111655866.2A CN202111655866A CN114294739A CN 114294739 A CN114294739 A CN 114294739A CN 202111655866 A CN202111655866 A CN 202111655866A CN 114294739 A CN114294739 A CN 114294739A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000003507 refrigerant Substances 0.000 claims abstract description 78
- 238000012790 confirmation Methods 0.000 claims description 9
- 230000007613 environmental effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 description 7
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- 230000005484 gravity Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses an air conditioner and a self-cleaning method thereof, wherein the air conditioner comprises a compressor, an indoor heat exchanger, a first throttling element, a three-way valve, an outdoor heat exchanger and an on-off valve, wherein the three-way valve is provided with a first interface, a second interface and a third interface, the first interface is selectively communicated with the second interface and the third interface, and the first interface is connected with the other end of the compressor; the outdoor heat exchanger includes: the first heat exchanging part, the second heat exchanging part and the second throttling element are connected between the first heat exchanging part and the second heat exchanging part; the on-off valve is connected between the second interface and one end of the first throttling element; when the air conditioner starts the self-cleaning function, the refrigerant circulates according to the second circulation mode after circulating for a preset time according to the first circulation mode. Like this, self-cleaning function through starting the air conditioner can clear up the dust in the air conditioner to promote the performance of air conditioner, prolong the life of air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a self-cleaning method of the air conditioner.
Background
In the prior art, when the single refrigeration cycle air conditioner is used, the outdoor heat exchanger is often in a heat release state, so that a large amount of dust is accumulated on the outdoor heat exchanger after the single refrigeration cycle air conditioner is used for a long time, and the use performance of the outdoor heat exchanger is affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to propose an air conditioner having a self-cleaning function.
Another object of the present invention is to provide a self-cleaning method of an air conditioner, which is suitable for cleaning the air conditioner.
An air conditioner according to an embodiment of the present invention includes: the system comprises a compressor, an indoor heat exchanger, a first throttling element, a three-way valve, an outdoor heat exchanger and an on-off valve, wherein the indoor heat exchanger is connected to one end of the compressor; one end of the first throttling element is connected to the indoor heat exchanger; the three-way valve is provided with a first port, a second port and a third port, the first port is selectively communicated with the second port and the third port, and the first port is connected to the other end of the compressor; the outdoor heat exchanger includes: the first heat exchanging part, the second heat exchanging part and the second throttling element are connected between the first heat exchanging part and the second heat exchanging part, one end of the first heat exchanging part is connected with the second interface, and the second heat exchanging part is connected with the third interface and is also connected with the other end of the first throttling element; the on-off valve is connected between the second interface and one end of the first throttling element; when the air conditioner starts a self-cleaning function, a refrigerant circulates according to a second circulation mode after circulating for a preset time according to a first circulation mode, in the first circulation mode, the refrigerant coming out of the compressor returns to the compressor after sequentially passing through the first interface, the third interface, the second heat exchanging part, the second throttling element, the first heat exchanging part, the on-off valve and the indoor heat exchanger, and in the second circulation mode, the refrigerant coming out of the compressor returns to the compressor after sequentially passing through the first interface, the second interface, the first heat exchanging part, the second throttling element, the second heat exchanging part, the first throttling element and the indoor heat exchanger.
According to the air conditioner disclosed by the embodiment of the invention, the dust in the air conditioner can be cleaned by starting the self-cleaning function of the air conditioner, so that the service performance of the air conditioner is improved, and the service life of the air conditioner is prolonged.
In some embodiments, the first heat exchanging portion is located above the second heat exchanging portion.
The self-cleaning method of the air conditioner according to the embodiment of the present invention includes the steps of:
detecting outdoor environment parameters;
judging whether the outdoor environment parameters meet self-cleaning conditions or not;
when the outdoor environment parameters meet the self-cleaning condition, the first interface is communicated with the third interface and is disconnected with the second interface, the first throttling element is closed, the opening degree of the second throttling element is adjusted, the on-off valve is switched on, and the refrigerant circulates for a preset time according to the first circulation mode;
the first interface is switched to be communicated with the second interface and disconnected with the third interface, the first throttling element is opened, the second throttling element is completely opened, the on-off valve is disconnected, and the refrigerant circulates according to the second circulation mode;
the air conditioner is shut down to finish self-cleaning.
According to the self-cleaning method of the air conditioner, the operation of the air conditioner is controlled through the steps, so that the cooling medium in the air conditioner can circulate according to the control to form the self-cleaning function of the air conditioner, the process of the self-cleaning function of the air conditioner is simple, the self-cleaning effect of the air conditioner is good, and the service life of the air conditioner can be prolonged.
In some embodiments, in the step of detecting an outdoor environmental parameter,
the outdoor environment parameter comprises at least one of: an outdoor relative humidity d and an outdoor temperature value T;
in the step of determining whether the outdoor environment parameter satisfies a self-cleaning condition,
the self-cleaning condition includes at least one of the following conditions:
d≥dis provided with，dIs provided withIs a preset outdoor relative humidity value;
T1≤T1 is provided，T1 is providedIs a preset outdoor temperature value.
In some embodiments, before the step of switching the first port to be communicated with the second port and to be disconnected from the third port, the first throttling element is opened, the second throttling element is fully opened, the on-off valve is disconnected, and the refrigerant circulates according to the second circulation mode, the method further includes the following steps:
judging whether the temperature and the duration time of the refrigerant meet the switching conditions:
the refrigerant temperature T2 between the second interface and the first heat exchange part is less than or equal to a preset refrigerant temperature value TLet 2And the duration t1 is greater than the preset time t1 is providedJudging that the air conditioner meets the switching condition;
the refrigerant temperature T2 between the second interface and the first heat exchange part is greater than or equal to a preset refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2And judging that the air conditioner does not meet the switching condition.
In some casesIn an embodiment, the refrigerant temperature T2 between the second port and the first heat exchange portion is greater than or equal to a preset refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2And after the step of judging that the air conditioner does not meet the switching condition, the method further comprises the following steps:
feeding back a self-cleaning unfinished signal, and receiving whether to retry the signal:
if yes, restarting to detect the outdoor environment parameters;
if not, the air conditioner is shut down.
In some embodiments, TLet 2And TLet 3Satisfy the relation: t isLet 2＞TLet 3，-3℃≤TLet 2＜0℃，-5℃≤TLet 3＜0℃；
t1 is providedAnd tLet 2Satisfy the relation: t is less than or equal to 8min1 is provided≤12min，13min≤tLet 2≤17min。
In some embodiments, before the air conditioner is turned off and the self-cleaning step is completed, the method further comprises the following steps:
judging whether the temperature and the duration time of the refrigerant meet shutdown conditions:
the temperature T3 of the refrigerant between the second interface and the first heat exchange part is greater than a preset temperature T of the refrigerantLet 4And the duration t3 is greater than the preset time tLet 3If so, judging that the air conditioner meets the shutdown condition;
the refrigerant temperature T3 between the second interface and the first heat exchange part is less than or equal to a preset refrigerant temperature value TLet 4And/or the duration t3 is less than or equal to the preset time tLet 3And judging that the air conditioner does not meet the shutdown condition.
In some embodiments, the refrigerant temperature T3 between the second port and the first heat exchange portion is less than or equal to a preset refrigerant temperature value TLet 4And/or the duration t3 is less than or equal to the preset time tLet 3And after the step of judging that the air conditioner does not meet the shutdown condition, the method further comprises the following steps:
judging the running time t4 and the preset time t of the compressor according to the second circulation modeLet 4The latter relationship:
at t4 > tLet 4When the air conditioner is started, the air conditioner is shut down to finish self-cleaning;
t4 ≦ tLet 4And meanwhile, the refrigerant still circulates according to the second circulation mode.
In some embodiments, before the step of detecting the outdoor environment parameter, the method further comprises the following steps:
detecting the operation function of the air conditioner:
when the air conditioner runs a standby function, starting a self-cleaning function;
when the air conditioner runs the starting function, sending confirmation information:
after receiving the feedback confirmation information, starting a self-cleaning function;
and after receiving the negative information fed back, keeping the starting function.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention, wherein the air conditioner is in a first circulation mode;
FIG. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention, wherein the air conditioner is in a second circulation mode;
fig. 3 is a logic diagram illustrating a self-cleaning method of an air conditioner according to an embodiment of the present invention.
Reference numerals:
in the air-conditioner 1, a heat exchanger is arranged,
the compressor (10) is provided with a compressor,
the indoor heat exchanger 20 is provided with a heat exchanger,
A three-way valve 40, a first port 41, a second port 42, a third port 43,
an outdoor heat exchanger 50, a first heat exchanging part 51, a second heat exchanging part 52, a second throttling element 53,
an on-off valve 60.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
An air conditioner 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 3, including: the compressor 10, the indoor heat exchanger 20, the first throttling element 30, the three-way valve 40, the outdoor heat exchanger 50, and the on-off valve 60.
Specifically, the indoor heat exchanger 20 is connected to one end of the compressor 10; one end of the first throttling element 30 is connected to the indoor heat exchanger 20; the three-way valve 40 has a first port 41, a second port 42 and a third port 43, the first port 41 selectively communicates with the second port 42 and the third port 43, and the first port 41 is connected to the other end of the compressor 10; the outdoor heat exchanger 50 includes: a first heat exchanging part 51, a second heat exchanging part 52 and a second throttling element 53, wherein the second throttling element 53 is connected between the first heat exchanging part 51 and the second heat exchanging part 52, one end of the first heat exchanging part 51 is connected with the second interface 42, and the second heat exchanging part 52 is connected with the third interface 43 and is also connected with the other end of the first throttling element 30; the on-off valve 60 is connected between the second port 42 and one end of the first throttling element 30; when the air conditioner 1 starts the self-cleaning function, the refrigerant circulates according to a second circulation mode after circulating for a predetermined time according to a first circulation mode, in the first circulation mode, the refrigerant coming out of the compressor 10 returns to the compressor 10 after sequentially passing through the first interface 41, the third interface 43, the second heat exchanging portion 52, the second throttling element 53, the first heat exchanging portion 51, the on-off valve 60 and the indoor heat exchanger 20, and in the second circulation mode, the refrigerant coming out of the compressor 10 returns to the compressor 10 after sequentially passing through the first interface 41, the second interface 42, the first heat exchanging portion 51, the second throttling element 53, the second heat exchanging portion 52, the first throttling element 30 and the indoor heat exchanger 20.
It should be noted that the air conditioner 1 mentioned in the present application may be not only a single refrigeration cycle air conditioner 1, but also an air conditioner 1 that can perform a refrigeration cycle and a heating cycle. Meanwhile, the second throttling element 53 is adapted to be an electronic expansion valve. Thus, the applicability of the present application can be increased, and an electronic expansion valve can be added to the single refrigeration cycle air conditioner 1 in the prior art, so that the single refrigeration cycle air conditioner 1 can have a self-cleaning function. An electronic two-way valve is often used as the on-off valve 60 to facilitate control adjustment of the air conditioner 1. In addition, a temperature collector may be disposed between the first heat exchanging part 51 and the second port 42 of the three-way valve 40 to measure the temperature of the refrigerant passing therethrough. Of course, the three-way valve 40 mentioned in the present application is usually provided in the form of an electronic three-way valve to facilitate the operation of the air conditioner 1.
It can be understood that, when the air conditioner 1 operates the self-cleaning function, the air conditioner 1 is adapted to adjust to the first circulation mode of the refrigerant to condense and frost on the outer side of the first heat exchanging portion 51, and then after the refrigerant circulates for a predetermined time, it is adapted to illustrate that enough frost is formed on the first heat exchanging portion 51 to meet the subsequent use, so that the air conditioner 1 is adjusted to the second circulation mode of the refrigerant to make the frost condensed on the first heat exchanging portion 51 suitable for melting, and the melted water droplets are suitable for taking away dust in the air conditioner 1 during the flowing and evaporating process to form the self-cleaning function of the air conditioner 1.
According to the air conditioner 1 provided by the embodiment of the invention, the dust in the air conditioner 1 can be cleaned by starting the self-cleaning function of the air conditioner 1, so that the service performance of the air conditioner 1 is improved, and the service life of the air conditioner 1 is prolonged.
In some embodiments, as shown in fig. 1 and 2, the first heat exchanging part 51 is located above the second heat exchanging part 52. In this way, when the air conditioner 1 performs the self-cleaning function, when the frost condensed on the first heat exchanging part 51 is suitable for melting, since the first heat exchanging part 51 is above the second heat exchanging part 52, the water droplets melted on the first heat exchanging part 51 are suitable for flowing onto the second heat exchanging part 52 by gravity, so that the second heat exchanging part 52 can be cleaned, and the self-cleaning function of the air conditioner 1 has a better self-cleaning effect on the air conditioner 1.
The self-cleaning method of the air conditioner 1 according to any one of the above embodiments of the present invention includes the steps of:
detecting outdoor environment parameters; judging whether the outdoor environment parameters meet self-cleaning conditions or not; thus, in the using process of the air conditioner 1, the outdoor environment condition is judged firstly, and when the outdoor environment is better and the self-cleaning function of the air conditioner 1 can be met, the self-cleaning function of the air conditioner 1 can be carried out.
When the outdoor environment parameters meet the self-cleaning condition, the first interface 41 is communicated with the third interface 43 and is disconnected from the second interface 42, the first throttling element 30 is closed, the second throttling element 53 is used for adjusting the opening degree, the on-off valve 60 is switched on, and the refrigerant circulates for a preset time according to a first circulation mode; as described above, when the first connection port 41 and the third connection port 43 are connected, the air conditioner 1 is adapted to perform the first circulation type circulation, the first throttling element 30 is closed, the refrigerant is adapted to circulate in the direction from the second heat exchanging portion 52 to the first heat exchanging portion 51, and the opening degree of the second throttling element 53 is adjusted so as to be throttled and depressurized, so that the first heat exchanging portion 51 absorbs heat so that moisture in the external environment can be frosted outside the first heat exchanging portion 51 when the refrigerant passes through the second throttling element 53 and then reaches the first heat exchanging portion 51.
The first port 41 is switched to be communicated with the second port 42 and disconnected from the third port 43, the first throttling element 30 is opened, the second throttling element 53 is fully opened, the on-off valve 60 is disconnected, and the refrigerant circulates according to a second circulation mode; when the first heat exchanging part 51 is covered with enough frost, the first port 41 is communicated with the second port 42, so that the refrigerant is suitable for circulating in the direction from the first heat exchanging part 51 to the second heat exchanging part 52, and the second throttling element 53 is fully opened, at this time, the second throttling element 53 does not play any role of throttling and reducing pressure, the refrigerant is adapted to release heat at the outdoor heat exchanger 50 while passing through the outdoor heat exchanger 50, so that the frost condensed at the first heat exchanging part 51 is melted and formed into water droplets, dust can be carried away when the water drops flow through to form a self-cleaning function, and, at the same time, since the first heat exchanging part 51 is disposed above the second heat exchanging part 52, so that the water droplets are adapted to flow onto the second heat exchanging portion 52 by gravity when the first heat exchanging portion 51 melts the frost, so that the second heat exchanging portion 52 is cleaned.
The air conditioner 1 is turned off to complete self-cleaning. After the self-cleaning function of the air conditioner 1 is completed, the air conditioner 1 may be turned off to prompt the user that the self-cleaning function of the air conditioner 1 is completed.
Therefore, by using the steps to control the operation of the air conditioner 1, the refrigerant in the air conditioner 1 can circulate according to the control to form the self-cleaning function of the air conditioner 1, the process of the self-cleaning function of the air conditioner 1 is simpler, the self-cleaning effect of the air conditioner 1 is better, and the service life of the air conditioner 1 can be prolonged.
In some embodiments, in the step of detecting the outdoor environment parameter, the outdoor environment parameter includes at least one of: an outdoor relative humidity d and an outdoor temperature value T; in the step of determining whether the outdoor environment parameter satisfies a self-cleaning condition, the self-cleaning condition includes at least one of the following conditions: d is more than or equal to dIs provided with，dIs provided withIs a preset outdoor relative humidity value; t1 ≤ T1 is provided，T1 is providedIs a preset outdoor temperature value. It should be noted that the self-cleaning function of the air conditioner 1 requires frost to be formed on the first heat exchanging portion 51, and when the outdoor humidity is low or the outdoor temperature is high, the difficulty of frost to be formed on the first heat exchanging portion 51 is high, and thus it is considered that the outdoor environment is insufficient for the self-cleaning function.
In some embodiments, before the step of switching the first port 41 to be communicated with the second port 42 and disconnected from the third port 43, the first throttling element 30 is opened, the second throttling element 53 is fully opened, the on-off valve 60 is disconnected, and the refrigerant circulates according to the second circulation mode, the method further comprises the following steps:
judging whether the temperature and the duration time of the refrigerant meet the switching conditions: the refrigerant temperature T2 between the second port 42 and the first heat exchanging part 51 is less than or equal to the preset refrigerant temperature value TLet 2And the duration t1 is greater than the preset time t1 is providedIf so, judging that the air conditioner 1 meets the switching condition; between the second interface 42 and the first heat exchanging part 51The refrigerant temperature T2 is greater than or equal to the preset refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2Then, it is judged that the air conditioner 1 does not satisfy the switching condition.
It can be understood that when the refrigerant temperature T2 is less than or equal to the preset refrigerant temperature value TLet 2Meanwhile, frost may be formed on the outside of the first heat exchanging part 51 to satisfy the self-cleaning performance of the air conditioner 1. When the refrigerant temperature T2 is less than or equal to the preset refrigerant temperature value TLet 2In the description of the temperature lecture of the first heat exchanger, frost cannot be formed on the first heat exchanger. When frost may be formed at the outside of the first heat exchanging part 51, when the duration t1 is greater than the preset time t1 is providedWhen the air conditioner 1 is switched, enough frost is formed on the outer side of the first heat exchanging portion 51 to satisfy the self-cleaning function of the air conditioner 1, and the self-cleaning function of the air conditioner 1 can be performed by judging that the air conditioner 1 satisfies the switching condition; when the frost cannot be formed outside the first heat exchanging portion 51, the elapsed time t1 is longer than the preset time tLet 2If the temperature of the sampling point is still not sufficient to satisfy the above frosting condition, it is determined that the air conditioner 1 does not satisfy the switching condition because the service performance of the air conditioner 1 is insufficient and the self-cleaning function of the air conditioner 1 cannot be completed.
In some embodiments, the refrigerant temperature T2 between the second port 42 and the first heat exchanging portion 51 is greater than or equal to a preset refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2Then, after the step of judging that the air conditioner 1 does not satisfy the switching condition, the method further includes the following steps:
the self-cleaning unfinished signal is fed back, and the user can control whether the air conditioner 1 retries according to the signal and receive whether the signal retries: if yes, restarting to detect the outdoor environment parameters, and performing judgment circulation in the process; if not, the air conditioner 1 is turned off to save resources.
In some embodiments, TLet 2And TLet 3Satisfy the relation: t isLet 2＞TLet 3，-3℃≤TLet 2＜0℃，-5℃≤TLet 3＜0℃；t1 is providedAnd tLet 2Satisfy the requirement ofThe relation is as follows: t is less than or equal to 8min1 is provided≤12min，13min≤tLet 2Less than or equal to 17 min. Therefore, the service condition of the air conditioner 1 can be fed back more reliably according to the temperature of the sampling point of the air conditioner 1, and the self-cleaning performance of the air conditioner 1 is safer and more reliable. Further, TLet 2Can be at-2 ℃ and TLet 3Can be at-3 ℃ t1 is providedCan be 10min, tLet 2The time can be set to be 15min,
in some embodiments, before the air conditioner 1 is turned off and the self-cleaning step is completed, the method further includes the following steps: judging whether the temperature and the duration time of the refrigerant meet shutdown conditions: the refrigerant temperature T3 between the second port 42 and the first heat exchanging part 51 is greater than the preset refrigerant temperature value TLet 4And the duration t3 is greater than the preset time tLet 3When the air conditioner 1 is automatically cleaned, the air conditioner 1 is judged to meet the shutdown condition and is shut down; the refrigerant temperature T3 between the second port 42 and the first heat exchanging part 51 is less than or equal to the preset refrigerant temperature value TLet 4Or the duration t3 is less than or equal to the preset time tLet 3In the meantime, it may be considered that the self-cleaning of the air conditioner 1 is not satisfied, and thus it is determined that the air conditioner 1 does not satisfy the shutdown condition, and the air conditioner 1 continues to operate the self-cleaning function.
In some embodiments, the refrigerant temperature T3 between the second port 42 and the first heat exchanging portion 51 is less than or equal to the preset refrigerant temperature value TLet 4And/or the duration t3 is less than or equal to the preset time tLet 3Then, after the step of determining that the air conditioner 1 does not satisfy the shutdown condition, the method further includes the steps of:
judging the operation time t4 and the preset time t of the compressor 10 according to the second circulation modeLet 4The latter relationship: at t4 > tLet 4When the air conditioner 1 is started, the air conditioner 1 is started to stop; t4 ≦ tLet 4Meanwhile, the refrigerant is still circulated according to the second circulation mode.
Thus, during the actual use of the air conditioner 1, the air conditioner 1 may be aged or the air conditioner 1 may not completely satisfy the determination condition under the self-cleaning function due to other reasons, for example, if the air conditioner 1 is continuously maintained under the self-cleaning function, the air conditioner 1 may not only be maintained under the self-cleaning functionThe energy is wasted, and the subsequent air conditioner 1 has a poor cleaning effect on the air conditioner 1 due to the self-cleaning function. Therefore, the operation time t4 of the compressor 10 exceeds the preset time tLet 4When it is determined that the air conditioner 1 has finished self-cleaning the air conditioner 1 under the self-cleaning function for a long time, the air conditioner 1 may be turned off to reduce the consumption of resources, or the self-cleaning function of the air conditioner 1 may be turned on when a user is suitable to leave the room, and the operation time 4 of the air conditioner 1 exceeds the preset time tLet 4So that the air conditioner 1 can be automatically turned off. And exceeds the preset time t at the operation time t4Let 40In this case, the refrigerant may be continuously circulated in the second circulation manner to continuously perform self-cleaning of the air conditioner 1.
Further, in the self-cleaning method of the air conditioner 1 mentioned in the present application, T set 4, T set 3, and T set 4 satisfy the relation: t is more than or equal to 35 ℃ and less than or equal to 4 and less than or equal to 45 ℃, T is more than or equal to 3min and less than or equal to 7min, and T is more than or equal to 20min and less than or equal to 4 and less than or equal to 30 min. Further, T may be set to 4 at 40 ℃, T may be set to 3 at 5min, and T may be set to 4 at 5 min.
In some embodiments, before the step of detecting the outdoor environmental parameter, the method further comprises the steps of:
detecting the operation function of the air conditioner 1: it can be understood that, before the self-cleaning function of the air conditioner 1 is operated, the operation function of the air conditioner 1 is detected, and the subsequent control and use of the air conditioner 1 are performed according to the operation function of the air conditioner 1;
when the air conditioner 1 runs the standby function, the self-cleaning function is started; in this way, when the air conditioner 1 is in the operation standby function, it can be considered that the air conditioner 1 has sufficient performance to satisfy the self-cleaning performance for the air conditioner 1, and thus the self-cleaning function for the air conditioner 1 is turned on.
When the air conditioner 1 operates the starting function, sending out confirmation information: when the air conditioner 1 is in the operation starting function, the air conditioner 1 is suitable for sending out confirmation information, and a user can control whether the air conditioner 1 carries out self-cleaning or not according to the confirmation information.
After receiving the feedback confirmation information, starting a self-cleaning function; after receiving the confirmation message sent by the user, the air conditioner 1 may start the self-cleaning function to self-clean the air conditioner 1.
After receiving the negative information fed back, the air conditioner 1 keeps the starting function, and after receiving the negative information sent by the user, the air conditioner 1 keeps running under the refrigeration function of the air conditioner 1 so as to meet the user requirement.
Other configurations and operations of the air conditioner 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air conditioner, comprising:
a compressor;
an indoor heat exchanger connected to one end of the compressor;
a first throttling element, one end of which is connected to the indoor heat exchanger;
the three-way valve is provided with a first port, a second port and a third port, the first port is selectively communicated with the second port and the third port, and the first port is connected to the other end of the compressor;
an outdoor heat exchanger, the outdoor heat exchanger comprising: the first heat exchanging part, the second heat exchanging part and the second throttling element are connected between the first heat exchanging part and the second heat exchanging part, one end of the first heat exchanging part is connected with the second interface, and the second heat exchanging part is connected with the third interface and is also connected with the other end of the first throttling element;
an on-off valve connected between the second port and one end of the first throttling element;
when the air conditioner starts a self-cleaning function, a refrigerant circulates according to a second circulation mode after circulating for a preset time according to a first circulation mode, in the first circulation mode, the refrigerant coming out of the compressor returns to the compressor after sequentially passing through the first interface, the third interface, the second heat exchanging part, the second throttling element, the first heat exchanging part, the on-off valve and the indoor heat exchanger, and in the second circulation mode, the refrigerant coming out of the compressor returns to the compressor after sequentially passing through the first interface, the second interface, the first heat exchanging part, the second throttling element, the second heat exchanging part, the first throttling element and the indoor heat exchanger.
2. The air conditioner according to claim 1, wherein the first heat exchanging part is located above the second heat exchanging part.
3. A self-cleaning method of an air conditioner according to any one of claims 1-2, comprising the steps of:
detecting outdoor environment parameters;
judging whether the outdoor environment parameters meet self-cleaning conditions or not;
when the outdoor environment parameters meet the self-cleaning condition, the first interface is communicated with the third interface and is disconnected with the second interface, the first throttling element is closed, the opening degree of the second throttling element is adjusted, the on-off valve is switched on, and the refrigerant circulates for a preset time according to the first circulation mode;
the first interface is switched to be communicated with the second interface and disconnected with the third interface, the first throttling element is opened, the second throttling element is completely opened, the on-off valve is disconnected, and the refrigerant circulates according to the second circulation mode;
the air conditioner is shut down to finish self-cleaning.
4. The self-cleaning method of an air conditioner according to claim 3, wherein in the step of detecting outdoor environmental parameters,
the outdoor environment parameter comprises at least one of: an outdoor relative humidity d and an outdoor temperature value T;
in the step of determining whether the outdoor environment parameter satisfies a self-cleaning condition,
the self-cleaning condition includes at least one of the following conditions:
d≥dis provided with，dIs provided withIs a preset outdoor relative humidity value;
T1≤T1 is provided，T1 is providedIs a preset outdoor temperature value.
5. A self-cleaning method for an air conditioner according to claim 3, wherein before the step of switching the first port to be connected to the second port and disconnected from the third port, the first throttling element is opened, the second throttling element is fully opened, the on-off valve is opened, and the refrigerant circulates in the second circulation manner, the method further comprises the steps of:
judging whether the temperature and the duration time of the refrigerant meet the switching conditions:
the refrigerant temperature T2 between the second interface and the first heat exchange part is less than or equal to a preset refrigerant temperature value TLet 2And the duration t1 is greater than the preset time t1 is providedJudging that the air conditioner meets the switching condition;
the refrigerant temperature T2 between the second interface and the first heat exchange part is greater than or equal to a preset refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2And judging that the air conditioner does not meet the switching condition.
6. The self-cleaning method of claim 5, wherein the refrigerant temperature T2 between the second port and the first heat exchanging part is greater than or equal to a predetermined refrigerant temperature value TLet 3And the duration t1 is greater than the preset time tLet 2And after the step of judging that the air conditioner does not meet the switching condition, the method further comprises the following steps:
feeding back a self-cleaning unfinished signal, and receiving whether to retry the signal:
if yes, restarting to detect the outdoor environment parameters;
if not, the air conditioner is shut down.
7. The self-cleaning method of an air conditioner according to claim 5, wherein T is TLet 2And TLet 3Satisfy the relation: t isLet 2＞TLet 3，-3℃≤TLet 2＜0℃，-5℃≤TLet 3＜0℃；
t1 is providedAnd tLet 2Satisfy the relation: t is less than or equal to 8min1 is provided≤12min，13min≤tLet 2≤17min。
8. A self-cleaning method for an air conditioner according to claim 3, wherein before said step of self-cleaning when said air conditioner is turned off, further comprising the steps of:
judging whether the temperature and the duration time of the refrigerant meet shutdown conditions:
the temperature T3 of the refrigerant between the second interface and the first heat exchange part is greater than a preset temperature T of the refrigerantLet 4And the duration t3 is greater than the preset time tLet 3If so, judging that the air conditioner meets the shutdown condition;
the refrigerant temperature T3 between the second interface and the first heat exchange part is less than or equal to a preset refrigerant temperature value TLet 4And/or the duration t3 is less than or equal to the preset time tLet 3And judging that the air conditioner does not meet the shutdown condition.
9. The self-cleaning method of claim 8, wherein a refrigerant temperature T3 between the second port and the first heat exchanging part is less than or equal to a predetermined refrigerant temperature value TLet 4And/or the duration t3 is less than or equal to the preset time tLet 3And after the step of judging that the air conditioner does not meet the shutdown condition, the method further comprises the following steps:
judging the running time t4 and the preset time t of the compressor according to the second circulation modeLet 4The relationship of (1):
at t4 > tLet 4When the air conditioner is started, the air conditioner is shut down to finish self-cleaning;
t4 ≦ tLet 4And meanwhile, the refrigerant still circulates according to the second circulation mode.
10. The self-cleaning method of an air conditioner according to claim 9, further comprising, before said step of detecting outdoor environmental parameters, the steps of:
detecting the operation function of the air conditioner:
when the air conditioner runs a standby function, starting a self-cleaning function;
when the air conditioner runs the starting function, sending confirmation information:
after receiving the feedback confirmation information, starting a self-cleaning function;
and after receiving the negative information fed back, keeping the starting function.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800381A (en) * | 2018-06-12 | 2018-11-13 | Tcl德龙家用电器（中山）有限公司 | Air conditioner clean method, air conditioner and readable storage medium storing program for executing |
| CN110470070A (en) * | 2019-08-05 | 2019-11-19 | 南京天加环境科技有限公司 | A kind of air-conditioning automatically cleaning control method |
| CN110686314A (en) * | 2019-11-01 | 2020-01-14 | 海信（广东）空调有限公司 | Air conditioner |
| CN110762719A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN112377986A (en) * | 2020-11-11 | 2021-02-19 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
| CN113028670A (en) * | 2021-02-10 | 2021-06-25 | 西安交通大学 | Full fresh air conditioning system and method |
| JP2021124227A (en) * | 2020-02-03 | 2021-08-30 | 東芝ライフスタイル株式会社 | Outdoor unit of air conditioner and air conditioner |
-
2021
- 2021-12-30 CN CN202111655866.2A patent/CN114294739B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800381A (en) * | 2018-06-12 | 2018-11-13 | Tcl德龙家用电器（中山）有限公司 | Air conditioner clean method, air conditioner and readable storage medium storing program for executing |
| CN110762719A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110470070A (en) * | 2019-08-05 | 2019-11-19 | 南京天加环境科技有限公司 | A kind of air-conditioning automatically cleaning control method |
| CN110686314A (en) * | 2019-11-01 | 2020-01-14 | 海信（广东）空调有限公司 | Air conditioner |
| JP2021124227A (en) * | 2020-02-03 | 2021-08-30 | 東芝ライフスタイル株式会社 | Outdoor unit of air conditioner and air conditioner |
| CN112377986A (en) * | 2020-11-11 | 2021-02-19 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
| CN113028670A (en) * | 2021-02-10 | 2021-06-25 | 西安交通大学 | Full fresh air conditioning system and method |
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