CN112880129A - Air conditioner and method and device for defrosting control of air conditioner - Google Patents
Air conditioner and method and device for defrosting control of air conditioner Download PDFInfo
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- CN112880129A CN112880129A CN202110111376.XA CN202110111376A CN112880129A CN 112880129 A CN112880129 A CN 112880129A CN 202110111376 A CN202110111376 A CN 202110111376A CN 112880129 A CN112880129 A CN 112880129A
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- 238000010257 thawing Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 239000003507 refrigerant Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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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
- F24F11/62—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
- F24F11/67—Switching between heating and cooling modes
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
Abstract
The application relates to the technical field of intelligent equipment, and discloses an air conditioner and a method and a device for controlling defrosting of the air conditioner. The outdoor heat exchanger of the air conditioner comprises at least two zone heat exchangers, one end of each zone heat exchanger is connected with a throttling device, and the other end of each zone heat exchanger is connected with two valve ports of a four-way valve of the air conditioner through two-way valves respectively, and the method comprises the following steps: under the condition that the air conditioner is determined to be in heating operation and the current area heat exchanger reaches the corresponding preset defrosting condition, controlling a first current two-way valve connected with the current area heat exchanger to be switched from an on state to a full-off state, and controlling a second current two-way valve connected with the current area heat exchanger to be switched from the full-off state to the on state; and adjusting the current operation parameters of the air conditioner according to the current environment temperature value, and performing defrosting operation according to the adjusted operation parameters. Thus, the uniformity of the indoor temperature in the heating mode is improved.
Description
Technical Field
The application relates to the technical field of intelligent equipment, in particular to an air conditioner and a method and a device for controlling defrosting of the air conditioner.
Background
With the continuous improvement of living standard of people, the requirement of consumers on air conditioners is gradually improved, especially, when the air conditioners are used in winter, the requirement on indoor temperature is higher and higher, and the defrosting phenomenon can be inevitably generated when the existing air conditioners are used for heating.
At present, the operation mode of air conditioner is by heating the mode conversion and convert the mode into the mode of heating into again of refrigeration mode during the defrosting, and in this period of time of the mode operation of cooling, because the air conditioner stops heating, the condition that the indoor temperature must appear declining, and the temperature can reduce 2 ~ 5 ℃ usually, and even more, this meeting brings not good user experience for the user.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides an air conditioner and a method and a device for controlling defrosting of the air conditioner, so as to solve the technical problem of temperature fluctuation caused in the defrosting process of the air conditioner.
In some embodiments, the air conditioner includes:
a compressor (1), a four-way valve (12) connected to an exhaust port of the compressor (1);
a first valve port of the four-way valve (12) is connected with one end of the indoor heat exchanger (2) through the stop valve (3);
the other end of the indoor heat exchanger (2) is connected with one end of an outdoor heat exchanger (7) through a throttling device (4);
the outdoor heat exchanger (7) comprises at least two zone heat exchangers, one end of each zone heat exchanger is connected with the throttling device (4), the other end of each zone heat exchanger is connected with the second valve port of the four-way valve (12) through a corresponding first two-way valve, and the other end of each zone heat exchanger is connected with the first valve port of the four-way valve (12) through a corresponding second two-way valve.
In some embodiments, a method for air conditioner defrost control, an air conditioner as described above, the method comprising:
under the condition that the air conditioner is determined to be in heating operation and the current area heat exchanger reaches the corresponding preset defrosting condition, controlling a first current two-way valve connected with the current area heat exchanger to be switched from an on state to a full-off state, and controlling a second current two-way valve connected with the current area heat exchanger to be switched from the full-off state to the on state;
and adjusting the current operation parameters of the air conditioner according to the current environment temperature value, and performing defrosting operation according to the adjusted operation parameters.
In some embodiments, the air conditioner is as described above, and the apparatus for air conditioner defrost control includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for air conditioner defrost control when executing the program instructions.
The air conditioner and the method and the device for controlling defrosting of the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the outdoor heat exchanger is divided into two or more areas, and each area heat exchanger can be respectively connected with different valve ports of the four-way valve through corresponding different two-way valves, thus, the refrigerant gas entering each area heat exchanger can be respectively controlled through different control of the two-way valves, the defrosting treatment can be realized by entering high-temperature refrigerant gas into a certain area heat exchanger under the condition of heating operation of the air conditioner, the subarea defrosting control of the outdoor heat exchanger under the heating operation of the air conditioner is realized, therefore, the defrosting treatment can be realized without stopping the air conditioner or refrigerating operation of the compressor, the uniformity of the indoor temperature under the heating mode is improved, the user experience is also improved, in addition, the operation parameters of the air conditioner are adjusted according to the current environment temperature value, and the defrosting control precision and the defrosting effect of the air conditioner are improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart diagram of a defrosting control method for an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart diagram of a defrosting control method for an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a defrosting control device for an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a defrosting control device for an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
When the air conditioner is in heating operation in winter, the defrosting treatment of the outdoor heat exchanger can be inevitably carried out. In the embodiment of the disclosure, the outdoor heat exchanger can be divided into two or more areas, and each area heat exchanger can be respectively connected with different valve ports of the four-way valve through corresponding different two-way valves, so that the refrigerant gas entering each area heat exchanger can be respectively controlled through different controls of the two-way valves, the defrosting treatment can be performed by entering high-temperature refrigerant gas into a certain area heat exchanger under the condition of heating operation of the air conditioner, the zonal defrosting control of the outdoor heat exchanger under the heating operation of the air conditioner is realized, namely, the defrosting treatment can be realized without stopping the compressor or performing the cooling operation of the compressor, the uniformity of the indoor temperature under the heating mode is improved, and the operation frequency of the compressor, the rotation speed of the outdoor fan and the valve opening degree of the two-way valves of the air conditioner can be adjusted according to the current environmental temperature value, hot air can be kept to be blown into a room, and the comfort and the user experience of the user when the user uses the air conditioner are also obviously improved.
Fig. 1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure. As shown in fig. 1, the air conditioner includes: the system comprises a compressor 1, a four-way valve 12, a throttling device 4, an indoor heat exchanger 2 and an outdoor heat exchanger 7.
Wherein, the four-way valve 12 is connected to the exhaust port of the compressor 1, and the first valve port of the four-way valve 12 can be connected to one end of the indoor heat exchanger 2 through the stop valve 3. The other end of the indoor heat exchanger 2 is connected to one end of an outdoor heat exchanger 7 through a throttle device 4.
In some embodiments, the outdoor heat exchanger 7 may be directly connected to the second port of the four-way valve, so that cooling, heating or other functions of the air conditioner may be performed. However, when the defrosting process is performed during the heating process, the operation needs to be stopped and switched to the cooling mode. In the embodiment of the present disclosure, the outdoor heat exchanger 7 may be connected to not only the second valve port of the four-way valve but also the first valve port of the four-way valve.
As shown in fig. 1, the outdoor heat exchanger may further include two or more zone heat exchangers, for example: heat exchanger I, heat exchanger II, …, heat exchanger X. One end of each zone heat exchanger is connected with the throttling device 4, the other end of each zone heat exchanger is connected with the second valve port of the four-way valve through a corresponding first two-way valve, and the other end of each zone heat exchanger is connected with the first valve port of the four-way valve through a corresponding second two-way valve. For example: one end of the heat exchanger I is connected with the throttling device 4, the other end of the heat exchanger I is connected with a second valve port of the four-way valve 12 through the two-way valve 9, and the other end of the heat exchanger I is also connected with a first valve port of the four-way valve 12 through the two-way valve 10. One end of the heat exchanger II is connected with the throttling device 4, the other end of the heat exchanger II is connected with a second valve port of the four-way valve 12 through the two-way valve 8, and the other end of the heat exchanger II is also connected with a first valve port of the four-way valve 12 through the two-way valve 11. And one end of the heat exchanger X is connected with a throttling device 4, the other end of the heat exchanger X is connected with a second valve port of a four-way valve 12 through a two-way valve m, and the other end of the heat exchanger X is also connected with a first valve port of the four-way valve 12 through a two-way valve n.
Of course, the outdoor heat exchanger is a whole, that is, the interior of each zone heat exchanger is communicated, and the zone division can be carried out on the outdoor heat exchanger according to the volume, the installation direction and the like of the outdoor heat exchanger. In some embodiments, the upper region of the outdoor heat exchanger may be identified as heat exchanger i and the lower region of the outdoor heat exchanger may be identified as heat exchanger ii. Or, the left area of the outdoor heat exchanger is determined as heat exchanger I, the middle area of the outdoor heat exchanger is determined as heat exchanger II, and the right area of the outdoor heat exchanger is determined as heat exchanger III. The details are not necessarily given as an example.
The outdoor heat exchanger is additionally provided with a bypass which is connected with the first valve port of the four-way valve through the corresponding two-way valve in the portable air conditioner, but the normal function of the air conditioner can be realized through controlling each two-way valve. When the air conditioner operates in a refrigerating mode, the added bypass needs to be closed, namely the second two-way valve connected with each zone heat exchanger is in a full-closed state, and certainly, the first two-way valve connected with each zone heat exchanger is in a full-open state, so that exhaust gas of the compressor 1 passes through the four-way valve 12, passes through each first two-way valve and each zone heat exchanger, and then is connected with the indoor heat exchanger 2 through the throttling device 4, and the refrigerating cycle is completed.
When the air conditioner is normally and stably operated for heating, the added bypass still needs to be closed, namely the second two-way valve connected with each zone heat exchanger is in a full-closed state, and certainly, the first two-way valve connected with each zone heat exchanger is in a full-open state, so that high-temperature exhaust gas of the compressor 1 enters the indoor heat exchanger 2 through the stop valve 3 after passing through the four-way valve 12, and thus after the indoor air is heated, the high-temperature exhaust gas enters each zone heat exchanger of the outdoor heat exchanger 7 through the throttling device 4 and returns to the compressor through the corresponding first two-way valve, and the heating cycle is completed.
In the heating operation of the air conditioner, the temperature of the outdoor heat exchanger can be reduced, frosting is possible, in order to reduce the probability of frosting, the frosting temperature is set when the outdoor heat exchanger reaches the set frosting temperature, and the frosting control is carried out for a period of time, so that the fact that the outdoor heat exchanger needs to be subjected to defrosting control can be determined, and at the moment, the defrosting control of the outdoor heat exchanger in different areas can be carried out. Because the outdoor heat exchanger is divided into two or more zone heat exchangers, the degree of the outdoor heat exchanger satisfies preset defrosting conditions, such as: when the outdoor heat exchanger reaches the set frosting temperature and lasts for a period of time, one area heat exchanger can be determined as the current area heat exchanger, then the defrosting control is carried out on the current area heat exchanger, wherein in the area defrosting control process, a bypass corresponding to the current area heat exchanger needs to be opened, namely a first current two-way valve connected with the current area heat exchanger needs to be closed, and a second current two-way valve connected with the current area heat exchanger needs to be opened, so that high-temperature exhaust gas of the compressor 1 passes through a first valve port of the four-way valve 12, and the second current two-way valve directly enters the current area heat exchanger, and therefore the defrosting treatment of the current heat exchanger is achieved. Of course, most of the high-temperature exhaust air of the compressor 1 still passes through the first valve port of the four-way valve 12, the stop valve 3 enters the indoor compressor 2 to heat the indoor air, and finally enters other area heat exchangers of the outdoor heat exchanger 7 through the throttling device 4, and as the outdoor heat exchanger 7 is communicated, the gas or liquid coming out of the current area heat exchanger can be merged with the gas or liquid coming out of the other area heat exchangers, and then flows back to the compressor 1 through the first two-way valves corresponding to the other area heat exchangers, so that a cycle is completed.
Of course, after the defrosting process of one region of the outdoor heat exchanger is completed, the defrosting process of other regions can be continued, so that the defrosting process of the outdoor heat exchanger is realized.
Therefore, most of high-temperature exhaust gas of the compressor passes through the indoor compressor to heat indoor air, and a small part of high-temperature exhaust gas can enter a local area of the outdoor compressor to be subjected to defrosting treatment, so that defrosting of the outdoor unit heat exchanger is realized while the air conditioner is in heating operation, namely, the air conditioner is in defrosting and heating operation simultaneously, and does not stop during defrosting, so that the uniformity of indoor temperature in a heating mode is improved, and user experience is also improved.
When the degree of the outdoor heat exchanger meets the preset defrosting condition, there are various ways of determining one area heat exchanger as the current area heat exchanger, for example: and randomly determining one zone heat exchanger as the current zone heat exchanger, or presetting the priority of each zone heat exchanger, so that the corresponding zone heat exchanger can be determined as the current zone heat exchanger according to the preset priority sequence. Of course, one zone heat exchanger can be determined as the current zone heat exchanger according to the temperature of each zone heat exchanger. Therefore, in some embodiments, a temperature detection device may be further configured on each zone heat exchanger, that is, the air conditioner may further include at least two temperature detection devices, and the temperature detection devices are respectively connected with one zone heat exchanger. Therefore, the current temperature value of each area heat exchanger can be obtained through each temperature detection device; therefore, under the condition that the duration time that the first current temperature value of the first zone heat exchanger is smaller than the set frosting temperature is longer than the first set time, the first zone heat exchanger can be determined as the current zone heat exchanger. Of course, if there are two or more first zone heat exchangers, the first zone heat exchanger may be determined as the current zone heat exchanger randomly or according to a preset priority order.
In the embodiment of the disclosure, each two-way valve needs to be correspondingly controlled, and the operating parameters of the air conditioner need to be adjusted, so that the defrosting control of the air conditioner in the heating operation process is realized.
Fig. 2 is a schematic flow chart of a defrosting control method for an air conditioner according to an embodiment of the present disclosure. Of course, the air conditioner may be constructed as described above, and as shown in fig. 2, the process for the defrosting control of the air conditioner includes:
step 201: and determining that the air conditioner is in heating operation and the current area heat exchanger reaches the corresponding preset defrosting condition.
When the air conditioner operates in heating, the temperature of the outdoor heat exchanger can be acquired in a timed or real-time mode, when the acquired current temperature is smaller than the set frosting temperature and the duration time is longer than the first set time, the outdoor heat exchanger can be determined to be defrosted, at the moment, one area heat exchanger can be randomly determined as a current area, or the area heat exchanger with high priority is determined as the current area heat exchanger according to the preset priority sequence, and the current area heat exchanger is determined to reach the corresponding preset defrosting condition.
In some embodiments, each zone heat exchanger is provided with a corresponding temperature detection device, so that a current temperature value of each zone heat exchanger can be obtained, and thus, when a duration time that a first current temperature value of the first zone heat exchanger is less than a set frosting temperature is longer than a first set time, the first zone heat exchanger is determined as the current zone heat exchanger, and it is determined that the current zone heat exchanger reaches a corresponding preset defrosting condition.
If there are two or more first zone heat exchangers, the first zone heat exchanger with the highest priority can be randomly or highly determined as the current zone heat exchanger.
As shown in fig. 1, the current temperatures of the heat exchanger i, the heat exchanger ii, …, and the heat exchanger x are obtained in real time, wherein if only the current temperature T2 of the heat exchanger ii is less than the set frosting temperature Td and the duration is greater than 30s, the heat exchanger ii is determined as the current area heat exchanger, and it is determined that the current area heat exchanger reaches the corresponding preset defrosting condition. If the current temperatures T1 and T2 of the heat exchanger I and the heat exchanger II are respectively less than the set frosting temperature Td and the duration is more than 30s, at the moment, if the priority of the heat exchanger I is high, the heat exchanger I can be determined as the current area heat exchanger, and the current area heat exchanger is determined to reach the corresponding preset defrosting condition.
Step 202: controlling a first current two-way valve connected with a current zone heat exchanger to be switched from an open state to a fully closed state; and controlling a second current two-way valve connected with the current zone heat exchanger to be switched from a full-off state to an on state.
Under the condition of heating operation of the air conditioner, the first two-way valve connected with each zone heat exchanger is in an open state or a full-open state, and the second two-way valve connected with each zone heat exchanger is in a full-closed state, so that high-temperature exhaust gas of the compressor enters the indoor heat exchanger through the stop valve 3 after passing through the four-way valve, and then enters each zone heat exchanger of the outdoor heat exchanger through the throttling device after heating the indoor air and returns to the compressor through the corresponding first two-way valve, and therefore the heating cycle is completed. In the embodiment of the disclosure, the defrosting process of the area heat exchanger needs to be realized in the heating process, so that at this time, the first current two-way valve connected with the current area heat exchanger needs to be controlled to be switched from the on state to the full off state; and controlling a second current two-way valve connected with the current zone heat exchanger to be switched from a full-off state to an on state.
Therefore, part of high-temperature exhaust gas of the compressor can directly enter the heat exchanger in the current area through the first valve port of the four-way valve and the second current two-way valve, and accordingly defrosting treatment of the current heat exchanger is achieved. Naturally, most of high-temperature exhaust gas of the compressor enters the indoor compressor through the first valve port of the four-way valve and the stop valve to heat indoor air, and finally enters other area heat exchangers of the outdoor heat exchanger through the throttling device.
As shown in fig. 1, the heat exchanger i is determined as the current zone heat exchanger, and the corresponding preset defrosting condition is reached, at this time, the two-way valve 9 needs to be closed, that is, the two-way valve 9 is controlled to be switched from the on state to the full off state, and at the same time, the two-way valve 10 needs to be opened, that is, the two-way valve 10 is controlled to be switched from the full off state to the on state. In this way, a part of high-temperature gas in the compressor discharge gas enters the heat exchanger I through the two-way valve 10 for defrosting, and the flow rate of the part of gas can be controlled by the opening degree of the two-way valve 10. Most of high-temperature gas exhausted by the compressor still performs normal heating circulation, and the two parts of gas are converged at heat exchangers II, … and X of the outdoor heat exchanger, flow through the two-way valves 8 and … and return to the compressor through the two-way valve m to complete a circulation.
Step 203: and adjusting the current operation parameters of the air conditioner according to the current environment temperature value, and performing defrosting operation according to the adjusted operation parameters.
In the regional defrosting control process, after the valve is controlled, the current operating parameters of the air conditioner can be adjusted according to the current environmental temperature value, and defrosting operation is performed according to the adjusted operating parameters. Wherein the current operating parameters include: one or more of a current valve opening degree of the second current two-way valve, a current operating frequency of the compressor, and a current rotational speed of the outdoor fan.
In some embodiments, adjusting the current operating parameter of the air conditioner according to the current ambient temperature value includes: determining the current operating frequency of the compressor corresponding to the current ambient temperature value according to a first corresponding relation between the ambient temperature and the operating frequency of the compressor; determining the current valve opening of a second current two-way valve corresponding to the current environment temperature value according to a second corresponding relation between the environment temperature and the valve opening of the two-way valve; and determining the current rotating speed of the outdoor direct-current fan corresponding to the current environment temperature value according to the third corresponding relation between the environment temperature and the outdoor direct-current fan.
For example: the rotating speed of the indoor fan can be adjusted to the corresponding low-gear wind speed in the heating mode, and the current operating frequency F of the press can be adjusted to the defrosting set frequency Fd according to the first corresponding relation between the environment temperature and the operating frequency of the compressor shown in the table 1; if the outdoor Fan is an outdoor direct current Fan, the current rotating speed Fan may be adjusted to Fand according to a third corresponding relationship between the ambient temperature and the rotating speed of the outdoor direct current Fan shown in table 2, and the current valve opening of the second current two-way valve may be adjusted to the set valve opening M according to a second corresponding relationship between the ambient temperature and the valve opening of the two-way valve shown in table 3. Of course, in an embodiment, if the outdoor fan is an outdoor ac fan, the current rotation speed of the outdoor fan may be adjusted to the low-gear wind speed.
| Ambient temperature T (. degree. C.) | T≤-10 | ﹣10＜T≤0 | 0＜T≤5 | 5＜T |
| Fd(Hz) | 0.7Fmax | 0.8Fmax | 0.9Fmax | 0.7Fmax |
TABLE 1
In table 1, Fmax is the maximum operating frequency of the compressor at the current ambient temperature. A first correspondence between the ambient temperature and the operating frequency of the compressor may be determined according to the probability of frosting at each temperature. As shown in table 1, the ambient temperature is between zero and five degrees, the possibility of frost formation is the greatest, and therefore, the operating frequency of the corresponding compressor is also the greatest.
| Ambient temperature T (. degree. C.) | T≤-10 | ﹣10＜T≤0 | 0＜T≤5 | 5＜T |
| Fand(rpm) | 500 | 400 | 300 | 400 |
TABLE 2
In the embodiment of the disclosure, the defrosting and the heating of the air conditioner can be simultaneously operated, so that the rotating speed of the outdoor fan also needs to be matched with the ambient temperature, thus ensuring that hot air enters the indoor space during defrosting and ensuring the defrosting and heating effects.
| Ambient temperature T (. degree. C.) | T≤-10 | ﹣10＜T≤0 | 0＜T≤5 | 5＜T |
| M | 200 | 250 | 300 | 200 |
TABLE 3
Similarly, considering the defrosting and heating effects, the current valve opening of the second current two-way valve corresponding to the current ambient temperature may be determined according to table 3.
And according to the ambient temperature, after one or more of the current valve opening of the second current two-way valve, the current running frequency of the compressor and the current rotating speed of the outdoor fan are adjusted, defrosting operation can be performed according to the adjusted running parameters. Therefore, in the process of operating while defrosting and heating, hot air can be kept to be blown into a room, the compressor can also defrost to the maximum extent, the defrosting and heating effects are guaranteed, the operating efficiency of the compressor is improved, and the comfort and the user experience of a user when the user uses the air conditioner are obviously improved.
It can be seen that, in this embodiment, because most high-temperature exhaust of the compressor is still through the indoor compressor, heat the indoor air, and the local area that the little high-temperature exhaust can get into the outdoor compressor carries out the defrosting and handles, like this, the defrosting of off-premises station heat exchanger has been realized when the air conditioner heats the operation, the defrosting of air conditioner and heating run simultaneously promptly, and do not shut down during the defrosting, thereby, the homogeneity of indoor temperature under the mode of heating has been improved, user experience has also been improved, and, according to current ambient temperature value, the operating parameter of adjustment air conditioner, the precision and the defrosting effect of air conditioner defrosting control have been improved.
In some embodiments, the temperature of the outdoor heat exchanger can be obtained in real time, and optionally, in order to ensure the balance of the indoor temperature, only one area heat exchanger is subjected to defrosting at a time, so that when the current area heat exchanger is subjected to defrosting control, only the current temperature of the current area heat exchanger can be obtained, and the temperatures of other area heat exchangers do not need to be obtained, that is, whether the other area heat exchangers meet corresponding preset defrosting and dispensing requirements or not does not need to be judged, that is, in some embodiments, under the condition that the second current two-way valve is in an open state, the obtaining of the current temperature values of the other area heat exchangers is stopped. Therefore, the defrosting process of the current area heat exchanger is ensured to be smooth.
Certainly, in the regional defrosting process, the current temperature of the current heat exchanger still needs to be acquired in real time or at regular time, so that once the acquired current temperature meets the preset defrosting end condition, the defrosting process of the current region can be completed. That is, in some embodiments, in the case where the duration in which the current temperature value of the current zone heat exchanger is greater than the set defrost temperature is greater than the second set time, the first current two-way valve is controlled to be switched from the fully-off state to the fully-on state, and the second current two-way valve is controlled to be switched from the on state to the fully-off state. Namely, when the duration that the current temperature value of the heat exchanger in the current area is greater than the set defrosting temperature is greater than the second set time, the normal heating operation of the air conditioner is recovered.
Or, in the process of regional defrosting, the temperature of the outdoor heat exchanger does not need to be acquired, and it is only required to determine that the defrosting process of the current region is completed according to the defrosting operation time, so in some embodiments, when the second current two-way valve is in the on state and the duration time exceeds the set time, the first current two-way valve may also be controlled to switch from the fully-off state to the fully-on state, and the second current two-way valve may also be controlled to switch from the on state to the fully-off state. Namely, after the defrosting of the heat exchanger in the current area is controlled to the set time, the normal heating operation of the air conditioner can be recovered.
After the air conditioner is normally heated, the temperature of the outdoor heat exchanger is continuously acquired, at the moment, the time can be set for 30 seconds, one minute or other set time, then the temperature of the outdoor heat exchanger is continuously acquired in real time or at regular time, and once the duration time that the current temperature corresponding to one area heat exchanger is smaller than the set frosting temperature is longer than the first set time, frosting control is continuously carried out on the area heat exchanger. Or once the duration time that the current temperature of the outdoor heat exchanger is less than the set frosting temperature is longer than the first set time, one area heat exchanger is continuously selected for frosting control.
Certainly, in the heating operation process of the air conditioner, each zone heat exchanger may not reach the corresponding preset defrosting condition, and at this time, in order to further reduce the probability of frosting of the outdoor heat exchanger, in some embodiments, under the condition that it is determined that the duration time of the heating operation of the air conditioner is longer than the third set time and each zone heat exchanger does not reach the corresponding preset defrosting condition, defrosting control may be performed on the zone heat exchangers, and optionally, defrosting control may be performed on each zone heat exchanger according to each preset priority order.
For example: in fig. 1, the priorities of the heat exchanger i, the heat exchanger ii, … and the heat exchanger x are sequentially decreased, so that if the air conditioner is operated for 6 hours, the current temperatures corresponding to the heat exchanger i, the heat exchanger ii, … and the heat exchanger x are all higher than the set frosting temperature, and therefore, the defrosting control can be performed on the heat exchanger i, the heat exchanger ii, … and the heat exchanger x sequentially.
Of course, when the air conditioner is in refrigeration operation, the first two-way valve connected with each zone heat exchanger can be controlled to be in a full-open state, and the second two-way valve connected with each zone heat exchanger can be controlled to be in a full-closed state. Similarly, when the air conditioner is in heating operation, the first two-way valve connected with each zone heat exchanger can be controlled to be in a full-open state, and the second two-way valve connected with each zone heat exchanger can be controlled to be in a full-closed state.
The following operational flow is integrated into a specific embodiment to illustrate the defrosting control process for an air conditioner provided by the embodiment of the present invention.
In an embodiment of the present disclosure, an outdoor heat exchanger of an air conditioner is divided into upper and lower areas according to a structure, that is, an upper area of the outdoor heat exchanger is a heat exchanger i, a lower area of the outdoor heat exchanger is a heat exchanger ii, each area heat exchanger corresponds to a temperature sensor, and the priority of the heat exchanger i is higher than that of the heat exchanger ii, and a set frosting temperature Td is saved, a set defrosting temperature Th is saved, where Th > Td, a first set time may be equal to a second set time, both 30s, and a third set time may be 6 h.
Fig. 3 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure. As shown in fig. 3, the air conditioner includes: the system comprises a compressor 1, a four-way valve 12, a throttling device 4, an indoor heat exchanger 2 and an outdoor heat exchanger 7.
Wherein, the four-way valve 12 is connected to the exhaust port of the compressor 1, and the first valve port of the four-way valve 12 can be connected to one end of the indoor heat exchanger 2 through the stop valve 3. The other end of the indoor heat exchanger 2 is connected to one end of an outdoor heat exchanger 7 through a throttle device 4.
The outdoor heat exchanger 7 includes an upper area and a lower area, i.e., a heat exchanger i and a heat exchanger ii, and the heat exchanger i is provided with a temperature sensor 6 and the heat exchanger ii is provided with a temperature sensor 5. One ends of the heat exchanger I and the heat exchanger II are connected with the throttling device 4, wherein the other end of the heat exchanger I is connected with a second valve port of the four-way valve 12 through the two-way valve 9, and the other end of the heat exchanger I is also connected with a first valve port of the four-way valve 12 through the two-way valve 10. The other end of the heat exchanger II is connected with a second valve port of a four-way valve 12 through a two-way valve 8, and the other end is also connected with a first valve port of the four-way valve 12 through a two-way valve 11. Further, the outdoor fan of the air conditioner is an outdoor direct current fan, and the air conditioner stores the correspondence relationships shown in tables 1, 2, and 3.
Fig. 4 is a schematic flow chart of a defrosting control method for an air conditioner according to an embodiment of the present disclosure. The structure of the air conditioner is shown in fig. 3, and in conjunction with fig. 4, the process for defrosting control of the air conditioner includes:
step 401: and acquiring the current temperature of each zone heat exchanger in the air conditioner in a heating state.
The current temperatures of the heat exchanger I and the heat exchanger II can be respectively obtained through the temperature sensor 6 and the temperature sensor 5.
Step 402: is it determined whether the duration during which the current temperature value of the heat exchanger i is less than the set frosting temperature Td is greater than 30 s? If yes, go to step 403, otherwise, go to step 407.
Step 403: and controlling the two-way valve 9 to be closed, controlling the two-way valve 10 to be opened, adjusting the current operation parameters of the air conditioner according to the acquired current environment temperature value, and performing defrosting operation according to the adjusted operation parameters.
The current operating frequency of the air conditioner compressor, the current wind speed of the outdoor direct current fan, and the valve opening of the two-way valve 10 can be respectively adjusted according to the corresponding relations shown in tables 1, 2, and 3, the wind speed of the indoor fan can be adjusted to a low-grade wind speed, and defrosting operation can be performed according to the adjusted operating parameters. Therefore, the efficiency of dehumidification is improved, hot air can be guaranteed to be blown into a room, the defrosting and heating effects are considered, and the defrosting control precision and the defrosting effect of the air conditioner are improved.
Step 404: and acquiring the current temperature value of the heat exchanger I.
Step 405: is the duration of time for which the current temperature value of the heat exchanger i is greater than the set defrost temperature Th determined to be greater than 30 s? If yes, go to step 406, otherwise, go back to step 403.
Step 406: and controlling the two-way valve 9 to be opened, controlling the two-way valve 10 to be closed, and timing the heating operation time of the air conditioner from zero. Returning to step 401.
Step 407: is it determined whether the duration of time during which the current temperature value of the heat exchanger ii is less than the set frosting temperature Td is greater than 30 s? If yes, go to step 408, otherwise go to step 411.
Step 408: and controlling the two-way valve 8 to be closed, controlling the two-way valve 11 to be opened, adjusting the current operation parameters of the air conditioner according to the acquired current environment temperature value, and performing defrosting operation according to the adjusted operation parameters.
The current operating frequency of the air conditioner compressor, the current air speed of the outdoor direct current fan and the valve opening of the two-way valve 11 can be respectively adjusted according to the corresponding relations shown in tables 1, 2 and 3, the air speed of the indoor fan can be adjusted to a low-grade air speed, and defrosting operation is performed according to the adjusted operating parameters. Therefore, the defrosting and heating effects are taken into consideration, and the defrosting control precision and the defrosting effect of the air conditioner are improved.
Step 409: is it determined whether the time during which the two-way valve 11 is in the on state is greater than 2 minutes? If yes, go to step 410, otherwise, go back to step 408.
Step 410: and controlling the two-way valve 8 to be opened, controlling the two-way valve 11 to be closed, and timing the heating operation time of the air conditioner from zero. Returning to step 401.
Step 411: determine whether the time for air conditioning heating operation is greater than 6 h? If yes, go to step 412, otherwise, go back to step 401.
The timing time of the heating operation of the air conditioner is longer than 6h, and each zone heat exchanger does not reach the corresponding preset defrosting condition, at this time, the defrosting control is firstly carried out on the heat exchanger I, namely the step 412 is executed, and then the defrosting control is carried out on the heat exchanger II, namely the step 413 is executed.
Step 412: and controlling the two-way valve 9 to be closed, controlling the two-way valve 10 to be opened, adjusting the current operating parameters of the air conditioner according to the current environmental temperature value, and controlling the two-way valve 9 to be opened and the two-way valve 10 to be closed after the air conditioner operates for 2 minutes according to the adjusted operating parameters.
Step 413: and after reaching 30s, controlling the two-way valve 8 to be closed, controlling the two-way valve 11 to be opened, adjusting the current operating parameters of the air conditioner according to the current environmental temperature value, operating for 2 minutes according to the adjusted operating parameters, controlling the two-way valve 8 to be opened, and controlling the two-way valve 11 to be closed.
Step 414: the air conditioner heating operation time is counted from zero, and the process returns to step 401.
It can be seen that, in this embodiment, the outdoor heat exchanger is divided into two, and each regional heat exchanger accessible corresponds different two-way valve and links to each other with the different valve ports of four-way valve respectively, like this, the accessible is to the different control of two-way valve, control respectively the refrigerant gas that gets into each regional heat exchanger, can realize that the air conditioner can get into high temperature refrigerant gas in certain regional heat exchanger and carry out the defrosting in the condition of heating the operation, the subregion defrosting control of the outdoor heat exchanger of air conditioner under the heating operation has been realized, the compressor need not to shut down or carry out the refrigeration operation promptly, can realize the defrosting and handle, indoor temperature's homogeneity under the heating mode has been improved, user experience has also been improved. In addition, in the process of operating while defrosting and heating, hot air can be kept to be blown into a room, so that the defrosting and heating effects of the air conditioner are further improved, and the comfort and the user experience of a user when the air conditioner is used are obviously improved.
According to the above-described process for the defrosting control of the air conditioner, an apparatus for the defrosting control of the air conditioner can be constructed.
Fig. 5 is a schematic structural diagram of a defrosting control device for an air conditioner according to an embodiment of the present disclosure. The air conditioning structure may be as described above, and as shown in fig. 5, the defrosting control means for an air conditioner includes: a determination module 510, a first control module 520, and a defrost control module 530.
The determining module 510 is configured to determine that the air conditioner is in a heating operation and the current zone heat exchanger reaches a corresponding preset defrosting condition.
A first control module 520 configured to control a first current two-way valve connected to the current zone heat exchanger to be switched from an on state to a fully off state, and to control a second current two-way valve connected to the current zone heat exchanger to be switched from the fully off state to the on state.
And the defrosting regulation control module 530 is configured to regulate the current operating parameters of the air conditioner according to the current ambient temperature value, and perform defrosting operation according to the regulated operating parameters.
In some embodiments, the determining module 510 is specifically configured to obtain a current temperature value for each zone heat exchanger; and under the condition that the duration time that the first current temperature value of the first area heat exchanger is less than the set frosting temperature is longer than the first set time, determining the first area heat exchanger with high priority as the current area heat exchanger, and determining that the current area heat exchanger reaches the corresponding preset defrosting condition.
In some embodiments, the determining module 510 is further configured to stop obtaining the current temperature value of the other zone heat exchangers if the second current two-way valve is in the on state.
In some embodiments, the first control module 520 is further configured to control the first current two-way valve to switch from the fully-off state to the fully-on state and the second current two-way valve to switch from the on state to the fully-off state if the current temperature value of the current zone heat exchanger is greater than the set defrost temperature for a duration greater than a second set time.
In some embodiments, the defrost control module 530 is specifically configured to determine a current operating frequency of the compressor corresponding to the current ambient temperature value according to a first correspondence between the ambient temperature and the operating frequency of the compressor; determining the current valve opening of a second current two-way valve corresponding to the current environment temperature value according to a second corresponding relation between the environment temperature and the valve opening of the two-way valve; and determining the current rotating speed of the outdoor direct-current fan corresponding to the current environment temperature value according to a third corresponding relation between the environment temperature and the rotating speed of the outdoor direct-current fan.
In some embodiments, the apparatus further comprises: and the second control module is configured to perform defrosting control on each regional heat exchanger according to a preset priority sequence under the condition that the duration time of the heating operation of the air conditioner is longer than the third set time and each regional heat exchanger does not reach the corresponding preset defrosting condition.
In some embodiments, the apparatus further comprises: and the third control module is configured to control the first two-way valve connected with each zone heat exchanger to be in a full-open state and control the second two-way valve connected with each zone heat exchanger to be in a full-closed state under the condition that the air conditioner is determined to be in the heating or cooling operation.
It can be seen that, in this embodiment, the control device for defrosting of an air conditioner can control the refrigerant gas entering each area heat exchanger respectively through different controls of the two-way valve, so that the air conditioner can enter high-temperature refrigerant gas into a certain area heat exchanger to perform defrosting treatment under the condition of heating operation, and the control of the air conditioner to perform zonal defrosting of the outdoor heat exchanger under the heating operation is realized.
The embodiment of the present disclosure provides an apparatus for controlling defrosting of an air conditioner, which is structurally shown in fig. 6 and includes:
a processor (processor)100 and a memory (memory)101, and may further include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the method for air conditioner defrost control of the above-described embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the method for air conditioner defrosting control in the above-described method embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the defrosting control device for the air conditioner.
The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the above defrosting control method for an air conditioner.
An embodiment of the present disclosure provides a computer program product including a computer program stored on a computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to execute the above-described defrosting control method for an air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. An air conditioner, comprising:
a compressor (1), a four-way valve (12) connected to an exhaust port of the compressor (1);
a first valve port of the four-way valve (12) is connected with one end of the indoor heat exchanger (2) through the stop valve (3);
the other end of the indoor heat exchanger (2) is connected with one end of an outdoor heat exchanger (7) through a throttling device (4);
the outdoor heat exchanger (7) comprises at least two zone heat exchangers, one end of each zone heat exchanger is connected with the throttling device (4), the other end of each zone heat exchanger is connected with the second valve port of the four-way valve (12) through a corresponding first two-way valve, and the other end of each zone heat exchanger is connected with the first valve port of the four-way valve (12) through a corresponding second two-way valve.
2. The air conditioner according to claim 1, further comprising:
and the temperature detection devices are respectively connected with one zone heat exchanger.
3. A method for defrost control of an air conditioner, said air conditioner as claimed in claim 1 or 2, the method comprising:
under the condition that the air conditioner is determined to be in heating operation and the current area heat exchanger reaches the corresponding preset defrosting condition, controlling a first current two-way valve connected with the current area heat exchanger to be switched from an on state to a full-off state, and controlling a second current two-way valve connected with the current area heat exchanger to be switched from the full-off state to the on state;
and adjusting the current operation parameters of the air conditioner according to the current environment temperature value, and performing defrosting operation according to the adjusted operation parameters.
4. The method of claim 3, wherein the determining that the current zone heat exchanger reaches the corresponding preset defrost condition comprises:
acquiring a current temperature value of each area heat exchanger;
and under the condition that the duration time that the first current temperature value of the first area heat exchanger is less than the set frosting temperature is longer than the first set time, determining the first area heat exchanger with high priority as the current area heat exchanger, and determining that the current area heat exchanger reaches the corresponding preset defrosting condition.
5. The method of claim 4, further comprising:
and under the condition that the second current two-way valve is in an on state, stopping acquiring the current temperature values of the heat exchangers in other areas.
6. The method of claim 4, further comprising:
and under the condition that the duration time that the current temperature value of the current area heat exchanger is greater than the set defrosting temperature is greater than a second set time, controlling the first current two-way valve to be switched from a fully-closed state to a fully-opened state, and controlling the second current two-way valve to be switched from the opened state to the fully-closed state.
7. The method according to any one of claims 3-6, wherein the adjusting the current operating parameters of the air conditioner according to the current ambient temperature value comprises:
determining the current operating frequency of the compressor corresponding to the current ambient temperature value according to a first corresponding relation between the ambient temperature and the operating frequency of the compressor;
determining the current valve opening of a second current two-way valve corresponding to the current environment temperature value according to a second corresponding relation between the environment temperature and the valve opening of the two-way valve;
and determining the current rotating speed of the outdoor direct-current fan corresponding to the current environment temperature value according to a third corresponding relation between the environment temperature and the rotating speed of the outdoor direct-current fan.
8. The method of any of claims 3-6, further comprising:
and under the condition that the duration time of the heating operation of the air conditioner is longer than the third set time and each regional heat exchanger does not reach the corresponding preset defrosting condition, carrying out defrosting control on each regional heat exchanger according to the preset priority sequence.
9. The method of any of claims 3-6, further comprising:
and under the condition that the air conditioner is determined to be in heating or cooling operation, controlling a first two-way valve connected with each zone heat exchanger to be in a full-open state, and controlling a second two-way valve connected with each zone heat exchanger to be in a full-closed state.
10. An apparatus for air conditioner defrost control, the air conditioner as claimed in claim 1 or 2, the apparatus comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for air conditioner defrost control as claimed in any one of claims 3 to 9 when executing the program instructions.
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| CN114198865A (en) * | 2021-11-19 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioning unit and control method thereof |
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| WO2023207165A1 (en) * | 2022-04-28 | 2023-11-02 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner, and storage medium |
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| CN114110929A (en) * | 2021-11-12 | 2022-03-01 | 珠海格力电器股份有限公司 | Defrosting control method of air conditioner and air conditioner using same |
| CN114198865A (en) * | 2021-11-19 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioning unit and control method thereof |
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| WO2023207165A1 (en) * | 2022-04-28 | 2023-11-02 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner, and storage medium |
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Application publication date: 20210601 |