CN111141008B - Control method and control device for defrosting of air conditioner, storage medium and air conditioner - Google Patents
Control method and control device for defrosting of air conditioner, storage medium and air conditioner Download PDFInfo
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- CN111141008B CN111141008B CN201911403918.XA CN201911403918A CN111141008B CN 111141008 B CN111141008 B CN 111141008B CN 201911403918 A CN201911403918 A CN 201911403918A CN 111141008 B CN111141008 B CN 111141008B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device for defrosting of an air conditioner, a storage medium and the air conditioner, wherein the control method comprises the following steps: when the air conditioner operates in the heating mode, the air conditioner operates according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature; wherein the heating element comprises a first heating element and a second heating element; the first heating element is arranged at the bottom of the heat exchanger of the outdoor unit in the air conditioner, and the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the heat exchanger of the outdoor unit. According to the control method, when the air conditioner enters the defrosting mode, defrosting can be assisted, and defrosting efficiency is effectively improved; in addition, in the defrosting mode and in the low-temperature state, when the defrosting is not performed, the heat exchange efficiency of the refrigerant can be improved, the temperature rise of the refrigerant in the pipeline is accelerated, and the indoor side is quickly recovered to heat.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device for defrosting of an air conditioner, a storage medium and the air conditioner.
Background
When the air conditioner is operated in a heating mode under a low-temperature environment, the outdoor heat exchanger exchanges heat with the outdoor environment temperature to bring outdoor heat into the room, so that the indoor heating effect is achieved, and when the surface temperature of the outdoor heat exchanger is below zero and is lower than the dew point temperature of the ambient air, the frosting phenomenon can occur, and the heating effect of the air conditioner is affected.
For a commercial multi-split air conditioner, the multi-split air conditioner is generally in a 'one-to-many' mode, one outdoor unit is connected with a plurality of indoor units, so that the area of an outdoor unit heat exchanger is larger than that of the 'one-to-one' mode, capacity output of all the indoor units can be met, and the phenomenon of frosting of the multi-split air conditioner is more serious.
In the prior art, in order to not affect the heating effect of the air conditioner, a defrosting operation needs to be periodically performed in the heating process. The air conditioner is usually defrosted, for example, the air conditioner is periodically stopped for defrosting by using parameters such as the temperature of an outdoor unit coil and the temperature difference between the outdoor temperature and the indoor temperature as judgment conditions. This kind of mode can make indoor heat supply breakpoint appear, if change the frost time long, indoor can be because of the heat supply is not enough, and it is big to lead to indoor temperature to drop, and it is relatively poor to influence user's travelling comfort.
Disclosure of Invention
In order to solve at least one problem, the invention provides a control method for defrosting of an air conditioner, which comprises the following steps:
when the air conditioner operates in the heating mode, the air conditioner operates according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature;
wherein the heating element comprises a first heating element and a second heating element; the first heating element is arranged at the bottom of the air conditioner intermediate and outer machine heat exchanger, and the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the outer machine heat exchanger.
By adopting the technical scheme, on the basis of the arrangement of the heating element, under different conditions, such as the condition that the surface of an external machine heat exchanger of the air conditioner is likely to be frosted, after the air conditioner enters a defrosting mode, the air conditioner can be used for heating according to the outdoor environment temperature TOuter ringThe on/off of the heating element is controlled according to the relation with the preset temperature, after the heating element is turned on, the heat of the heating element can be transferred to the outer machine heat exchanger to assist the outer machine heat exchanger in defrosting, so that the defrosting time is effectively shortened, and the defrosting efficiency is improved; although the outdoor unit heat exchanger of the air conditioner is in a low-temperature state, the surface of the outdoor unit heat exchanger basically has no obvious frosting condition due to the low moisture content in the environment, and only a thin frost layer is possible to appear;
according to the control method, when the air conditioner enters the defrosting mode, defrosting can be assisted, and defrosting efficiency is effectively improved; in addition, in the defrosting mode and in the low-temperature state, when the defrosting is not performed, the heat exchange efficiency of the refrigerant can be improved, the temperature rise of the refrigerant in the pipeline is accelerated, and the indoor side is quickly recovered to heat.
Optionally, the control method includes the following steps:
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies the following conditions: t isOuter ring≥T1When the air conditioner enters a defrosting mode, the first heating element is controlled to be started, and the second heating element is controlled to be closed;
and when the air conditioner exits the defrosting mode, controlling the first heating element to be closed.
In this way, when T is1The value range is as follows: at 5 ℃, the outdoor environment temperature is relatively high, the surface of the outer machine heat exchanger is not easy to frost, even if frost is formed, frost layers of parts of the surface of the outer machine heat exchanger except the bottom, such as upper parts, middle parts and other areas, are not thick, the frost layer can be quickly and effectively removed by defrosting by heat of the air conditioner, but for a pipeline at the bottom of the outer machine heat exchanger, due to the influence of gravity, the flow of a refrigerant is large, the frost is most serious, and the frost is difficult to remove by defrosting only by heat of the air conditioner; therefore, the first heating element is started, heat generated by the first heating element is transferred to the outer machine heat exchanger, the outer machine heat exchanger is assisted to defrost, and the mode ensures that a frost layer at the bottom of the outer machine heat exchanger is removed completely, so that the heat exchange efficiency of the air conditioner is improved; in addition, the second heating elements located at the middle-lower, middle-upper and/or upper positions of the outer machine heat exchanger are turned off due to the large power consumption of the heating elements;
after the air conditioner exits the defrosting mode, it is indicated that no frost layer exists on the surface of the external defrosting heater at this time, or the frost layer is thin, and the heating effect of the air conditioner is not greatly affected, so that the first heating element is controlled to be turned off, and the air conditioner can operate in a normal heating mode.
Optionally, the control method includes the following steps:
when the outdoor ambient temperature TOuter ringAnd the preset temperatureThe relationship of degrees satisfies: t is2≤TOuter ring＜T1When the air conditioner enters a defrosting mode, the first heating element and the second heating element are controlled to be started;
and after the air conditioner exits the defrosting mode, controlling the first heating element and the second heating element to be switched off.
In this way, when T is2The value range is as follows: at-7 ℃ when the outdoor ambient temperature T isOuter ringThe defrosting time is long, a frost layer cannot be completely removed, long-time shutdown defrosting operation is realized, indoor cooling is obvious, and the use comfort of a user is influenced; therefore, the first heating element and the second heating element are started, heat generated by the first heating element and the second heating element is transferred to the outer machine heat exchanger, and defrosting efficiency is improved.
Optionally, the control method includes the following steps:
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies the following conditions: t isOuter ring≤T3When the first heating element and the second heating element are controlled to be separated by a first preset time t1Starting a second preset time t2。
In this way, when T is3The value range is as follows: at-8 ℃ when the outdoor ambient temperature T isOuter ringAlthough the air conditioner has low moisture content in the environment, the surface of the outer machine heat exchanger basically has no obvious frosting condition, and only a thin frost layer is possible, in the condition, the air conditioner usually does not enter a defrosting mode, but the condition has great influence on the heating capacity of the air conditioner1Starting a second preset time t2In this case, even if the air conditioner does not enter the defrosting mode, the heat generated by the first and second heating elements can be transferred to the external unit heat exchanger, thereby improving the low temperature conditionThe heating efficiency of the air conditioner under the condition.
The invention provides a control device of an air conditioner, which is characterized in that: executing the control method of any one of the above; the control device includes:
a control unit: the control unit is used for operating the air conditioner in the heating mode according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature.
The present invention provides a computer-readable storage medium characterized by: the computer-readable storage medium stores a computer program that, when read and executed by a processor, implements the control method according to any one of the above.
The invention provides an air conditioner, which is characterized in that: executing the control method of any one of the above.
Optionally, the air conditioner includes an external unit heat exchanger and a heating element, wherein the heating element includes a first heating element and a second heating element; the first heating element is arranged at the bottom of the air conditioner intermediate and outer machine heat exchanger, and the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the outer machine heat exchanger. According to the structure, the first heating element is arranged at the bottom of the outer machine heat exchanger with relatively low surface temperature and is also the position with the highest probability of frosting on the surface of the outer machine heat exchanger, so that when heat needs to be provided for the outer machine heat exchanger, the heat generated by the first heating element can be effectively transferred to the bottom of the outer machine heat exchanger; the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the outer machine heat exchanger, so that the second heating element can be started as required, and unnecessary energy consumption can be effectively avoided.
Optionally, the number of the second heating elements is more than one. This kind of structure, can be according to the needs of difference, specifically set up the quantity of second heating element, in order to guarantee to transmit the heat for outer machine heat exchanger, the quantity of second heating element is preferred three, be respectively from the second heating element A of supreme setting down, second heating element B and second heating element C, wherein distance L1 between second heating element A and the first heating element, be less than distance L2 between second heating element A and the second heating element B, and be less than distance L3 between second heating element B and the second heating element C, this kind of mode, the heat that can the lower region of effectual assurance outer machine heat exchanger surface temperature obtained is relatively more, so that improve the effect of heating of air conditioner.
Optionally, the heating element is disposed on a windward side of the outer machine heat exchanger. The refrigerant flows from the leeward side to the windward side, and the temperature is from high to low; the heating element is arranged on the windward side of the outer machine heat exchanger, namely the side with relatively low temperature in the outer machine heat exchanger, when the heating element is started, the generated heat can be transferred to the part with relatively low temperature in the outer machine heat exchanger, and the heating effect of the air conditioner can be effectively improved.
The invention provides a multi-split air conditioning system which comprises the air conditioner.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view illustrating an assembly of an external unit heat exchanger and a heating element of an air conditioner according to embodiment 4 of the present invention.
Reference numerals
100-a heating element; 110-a first heating element; 120-a second heating element; 200-outdoor unit heat exchanger
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The invention provides a control method for defrosting of an air conditioner, which comprises the following steps:
when the air conditioner operates in the heating mode, the air conditioner operates according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature;
wherein the heating element comprises a first heating element and a second heating element; the first heating element is arranged at the bottom of the heat exchanger of the outdoor unit in the air conditioner, and the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the heat exchanger of the outdoor unit.
On the basis of the arrangement of the heating element, the air conditioner can be operated in a defrosting mode according to the outdoor environment temperature T under different conditions, such as the condition that the surface of an external machine heat exchanger of the air conditioner is likely to be frostedOuter ringThe on/off of the heating element is controlled according to the relation with the preset temperature, after the heating element is turned on, the heat of the heating element can be transferred to the outer machine heat exchanger to assist the outer machine heat exchanger in defrosting, so that the defrosting time is effectively shortened, and the defrosting efficiency is improved; although the outer machine heat exchanger of the air conditioner is in a low-temperature state, the surface of the outer machine heat exchanger basically has no obvious frosting condition due to the low moisture content in the environment, only a thin frost layer is possible to appear, in the condition, the air conditioner usually does not enter a defrosting mode, but the condition can generate large heating capacity of the air conditionerThe effect is that the heating element is controlled to be turned on/off and the turning-on time of the heating element is controlled, so that even if the air conditioner does not enter a defrosting mode, the heating element can transfer heat to the outdoor unit heat exchanger in a turning-on state, and the heating efficiency of the air conditioner under the low-temperature condition is improved;
according to the control method, when the air conditioner enters the defrosting mode, defrosting can be assisted, and defrosting efficiency is effectively improved; in addition, in the defrosting mode and in the low-temperature state, when the defrosting is not performed, the heat exchange efficiency of the refrigerant can be improved, the temperature rise of the refrigerant in the pipeline is accelerated, and the indoor side is quickly recovered to heat.
In the invention, the heating element comprises an electric heating pipe, preferably is transversely arranged on the outer machine heat exchanger, and specifically comprises a first heating element and a second heating element, because the probability of the frosting phenomenon of the outer machine heat exchanger is sequentially reduced from bottom to top, the probability of the frosting phenomenon of the bottom of the outer machine heat exchanger is highest, the first heating element is arranged at the bottom of the outer machine heat exchanger in the air conditioner, and then the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the outer machine heat exchanger;
in the present embodiment, the control method includes the steps of:
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies that: t isOuter ring≥T1When the air conditioner enters a defrosting mode, the first heating element is controlled to be started, and the second heating element is controlled to be closed;
and when the air conditioner exits the defrosting mode, controlling the first heating element to be closed.
Wherein, T1The value range is as follows: 5 ℃;
in this way, when T is1The value range is as follows: at 5 ℃, the outdoor environment temperature is relatively high, the surface of the outer machine heat exchanger is not easy to frost, even if frost is formed, the frost layer of the surface of the outer machine heat exchanger except the bottom, such as the upper part, the middle part and other areas, is not thick, the frost layer can be quickly and effectively removed by defrosting by heat of the air conditioner, but for the bottom pipeline of the outer machine heat exchanger, the refrigerant flow is large due to the influence of gravity, and the frost is formedThe frost is the most serious, and is difficult to remove only by the heat of the air conditioner; therefore, the first heating element is started, heat generated by the first heating element is transferred to the outer machine heat exchanger, the outer machine heat exchanger is assisted to defrost, and the mode ensures that a frost layer at the bottom of the outer machine heat exchanger is removed completely, so that the heat exchange efficiency of the air conditioner is improved; in addition, the second heating elements located at the middle-lower, middle-upper and/or upper positions of the outer machine heat exchanger are turned off due to the large power consumption of the heating elements;
after the air conditioner exits the defrosting mode, it is indicated that no frost layer exists on the surface of the external defrosting heater at this time, or the frost layer is thin, and the heating effect of the air conditioner is not greatly affected, so that the first heating element is controlled to be turned off, and the air conditioner can operate in a normal heating mode.
In the present embodiment, the control method includes the steps of:
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies that: t is2≤TOuter ring＜T1When the air conditioner enters a defrosting mode, the first heating element and the second heating element are controlled to be started;
and after the air conditioner exits the defrosting mode, controlling the first heating element and the second heating element to be closed.
Wherein, T2The value range is as follows: -7 ℃.
In this way, when T is2The value range is as follows: at-7 ℃ when the outdoor ambient temperature T isOuter ringThe defrosting time is long, a frost layer cannot be completely removed, long-time shutdown defrosting operation is realized, indoor cooling is obvious, and the use comfort of a user is influenced; therefore, the first heating element and the second heating element are started, heat generated by the first heating element and the second heating element is transferred to the outer machine heat exchanger, and defrosting efficiency is improved.
In the present embodiment, the control method includes the steps of:
when the outdoor ambient temperatureTOuter ringThe relation with the preset temperature satisfies that: t isOuter ring≤T3The first heating element and the second heating element are controlled to be separated by a first preset time t1Starting a second preset time t2。
Wherein, T3The value range is as follows: -8 ℃; a first preset time t1The value range is as follows: 50min-70 min; second preset time t2The value range is as follows: 4-6 min.
In this way, when T is3The value range is as follows: at-8 ℃ when the outdoor ambient temperature T isOuter ringAlthough the air conditioner has low moisture content in the environment, the surface of the outer machine heat exchanger basically has no obvious frosting condition, and only a thin frost layer is possible, in the condition, the air conditioner usually does not enter a defrosting mode, but the condition has great influence on the heating capacity of the air conditioner1Starting a second preset time t2In this case, even if the air conditioner does not enter the defrosting mode, the heat generated by the first heating element and the second heating element can be transferred to the outdoor unit heat exchanger, thereby improving the heating efficiency of the air conditioner at low temperature.
Example 1
The present invention provides an embodiment of a method for controlling air conditioner defrosting, it should be noted that the steps shown in the flowchart of the figure can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from the order shown.
As shown in fig. 1, the control method includes the steps of:
s1, when the air conditioner operates in the heating mode, detecting the outdoor environment temperature TOuter ring；
S2, judging the outdoor environment temperature TOuter ringWhether the relationship with the preset temperature satisfies: t isOuter ring≥T1；
S3, when outdoorsAmbient temperature TOuter ringThe relation with the preset temperature satisfies that: t isOuter ring≥T1Judging whether the air conditioner enters a defrosting mode or not; when the outdoor ambient temperature TOuter ringThe relation with the preset temperature does not satisfy: t isOuter ring≥T1Then, step S7 is executed;
s4, after the air conditioner enters a defrosting mode, controlling the first heating element to be started and controlling the second heating element to be closed;
s5, judging whether the air conditioner exits the defrosting mode;
s6, controlling the first heating element to be closed when the air conditioner exits the defrosting mode;
s7, judging the outdoor environment temperature TOuter ringWhether the relationship with the preset temperature satisfies: t is2≤TOuter ring＜T1；
S8, when the outdoor environment temperature T is higherOuter ringThe relation with the preset temperature satisfies that: t is2≤TOuter ring＜T1Judging whether the air conditioner enters a defrosting mode or not; when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies that: t is2≤TOuter ring＜T1Then, step S12 is executed;
s9, after the air conditioner enters a defrosting mode, controlling the first heating element and the second heating element to be started;
s10, judging whether the air conditioner exits the defrosting mode;
s11, controlling the first heating element and the second heating element to be closed when the air conditioner exits the defrosting mode;
s12, judging the outdoor environment temperature TOuter ringWhether the relationship with the preset temperature satisfies: t isOuter ring≤T3；
S13, when the outdoor environment temperature T is higherOuter ringThe relation with the preset temperature satisfies that: t isOuter ring≤T3The first heating element and the second heating element are controlled to be separated by a first preset time t1Starting a second preset time t2。
Example 2
The present invention provides a control device for an air conditioner, which executes the control method of embodiment 1, the control device including:
a control unit: the control unit is used for operating the air conditioner in the heating mode according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature.
Example 3
The present invention provides a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the control method of embodiment 1.
Example 4
The invention provides an air conditioner, which executes the control method of embodiment 1.
As shown in fig. 2, in the present embodiment, the air conditioner includes an outer unit heat exchanger 200 and a heating element 100, and the heating element 100 includes a first heating element 110 and a second heating element 120; the first heating element 110 is disposed at the bottom of the air conditioner outdoor and indoor unit heat exchanger 200, and the second heating element 120 is disposed at a middle lower portion, a middle upper portion, and/or an upper portion of the outdoor unit heat exchanger 200.
According to the structure, the first heating element 110 is arranged at the bottom of the outer machine heat exchanger 200 with relatively low surface temperature and at the position with the highest probability of the frosting phenomenon on the surface of the outer machine heat exchanger 200, so that when heat needs to be provided for the outer machine heat exchanger 200, the heat generated by the first heating element 110 can be effectively transferred to the bottom of the outer machine heat exchanger 200; the second heating element 120 is disposed at the middle lower portion, the middle upper portion and/or the upper portion of the outer machine heat exchanger 200, so that the second heating element 120 can be turned on as required, thereby effectively avoiding unnecessary energy consumption.
In the present embodiment, the number of the second heating elements 120 is one or more. According to the structure, the number of the second heating elements 120 can be specifically set according to different requirements, in order to ensure the heat transferred to the outdoor unit heat exchanger 200, the number of the second heating elements 120 is preferably three, and the second heating elements are respectively the second heating element a, the second heating element B and the second heating element C which are arranged from bottom to top, wherein the distance L1 between the second heating element a and the first heating element is smaller than the distance L2 between the second heating element a and the second heating element B, and is smaller than the distance L3 between the second heating element B and the second heating element C, and by adopting the mode, the heat obtained by a lower surface temperature region of the outdoor unit heat exchanger 200 can be effectively ensured to be relatively more, so that the heating effect of the air conditioner can be improved.
In the present embodiment, the heating element 100 is provided on the windward side of the outer machine heat exchanger 200.
The refrigerant flows from the leeward side to the windward side, and the temperature is from high to low; the air flows from the windward side to the leeward side, the temperature is from low to high, and the windward side of the outer machine heat exchanger 200 is more likely to generate frost layer compared with the leeward side.
The windward side of the outer machine heat exchanger 200 is the side where air flow in the air conditioner blows to the outer machine heat exchanger, and the windward side of the outer machine heat exchanger 200 faces the flow direction of the air flow; the leeward side is the side where the air flow in the air conditioner blows away from the outer machine heat exchanger 20, and after the air flow in the air conditioner passes through the outer machine heat exchanger 20, the leeward side of the outer machine heat exchanger 20 is opposite to the air flow flowing direction.
Other components of the air conditioner are all present, and are not described again.
Example 5
The invention provides a multi-split air conditioning system, which comprises an air conditioner in embodiment 4.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A control method for defrosting of an air conditioner is characterized by comprising the following steps: the control method comprises the following steps:
when the air conditioner operates in the heating mode, the air conditioner operates according to the outdoor environment temperature TOuter ringControlling the on/off of the heating element and/or the on time of the heating element in relation to a preset temperature;
wherein the heating element comprises a first heating element and a second heating element; the first heating element is arranged at the bottom of the air conditioner outdoor and indoor unit heat exchanger, and the second heating element is arranged at the middle lower part, the middle upper part and/or the upper part of the outdoor unit heat exchanger;
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies the following conditions: t isOuter ring≥T1When the air conditioner enters a defrosting mode, the first heating element is controlled to be started, and the second heating element is controlled to be closed; when the air conditioner exits the defrosting mode, controlling the first heating element to be closed;
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies the following conditions: t is2≤TOuter ring＜T1When the air conditioner enters a defrosting mode, the first heating element and the second heating element are controlled to be started; after the air conditioner exits the defrosting mode, controlling the first heating element and the second heating element to be switched off; t is2The value range is as follows: -7 ℃;
when the outdoor ambient temperature TOuter ringThe relation with the preset temperature satisfies the following conditions: t isOuter ring≤T3When the first heating element and the second heating element are controlled to be separated by a first preset time t1Starting a second preset time t2；T3The value range is as follows: -8 ℃.
2. A control device of an air conditioner is characterized in that: executing the control method of claim 1; the control device includes:
a control unit: the control unit is used for operating the air conditioner in the heating mode according to the outdoor environment temperature TOuter ringControlling the opening/closing of the heating element in relation to a predetermined temperatureAnd/or the on time of the heating element.
3. A computer-readable storage medium characterized by: the computer-readable storage medium stores a computer program which, when read and executed by a processor, implements the control method according to claim 1.
4. An air conditioner, characterized in that: the control method of claim 1 is performed.
5. The air conditioner according to claim 4, wherein: the air conditioner includes an outdoor unit heat exchanger (200) and a heating element (100), the heating element (100) including a first heating element (110) and a second heating element (120); the first heating element (110) is arranged at the bottom of the air conditioner outdoor and indoor unit heat exchanger (200), and the second heating element (120) is arranged at the middle lower part, the middle upper part and/or the upper part of the outdoor unit heat exchanger (200).
6. The air conditioner according to claim 5, wherein: the number of the second heating elements (120) is more than one.
7. The air conditioner according to claim 4, wherein: the heating element (100) is arranged on the windward side of the outer machine heat exchanger (200).
8. The utility model provides a many online air conditioning system which characterized in that: the multi-split air conditioning system includes the air conditioner of claim 4.
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| CN113959063B (en) * | 2021-11-16 | 2023-03-28 | 宁波奥克斯电气股份有限公司 | Control method and control device of air conditioner and air conditioner |
| CN114576795B (en) * | 2021-12-28 | 2023-09-01 | 宁波奥克斯电气股份有限公司 | Control method of chassis electric heater and air conditioner |
| CN115289549A (en) * | 2022-07-12 | 2022-11-04 | 珠海格力电器股份有限公司 | Heat energy recycling system and method for air conditioner external unit and air conditioner |
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