CN111678206A - Air conditioning unit and control method thereof - Google Patents
Air conditioning unit and control method thereof Download PDFInfo
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- CN111678206A CN111678206A CN202010555199.XA CN202010555199A CN111678206A CN 111678206 A CN111678206 A CN 111678206A CN 202010555199 A CN202010555199 A CN 202010555199A CN 111678206 A CN111678206 A CN 111678206A
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- pipe
- defrosting
- conditioning unit
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010257 thawing Methods 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 17
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005057 refrigeration Methods 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
- F24F1/0038—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room in combination with simultaneous exhaustion of inside air
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
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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
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides an air conditioning unit and a control method of the air conditioning unit. The air conditioning unit comprises an inner unit, a fresh air pipe, an exhaust pipe and a defrosting air pipe, wherein the fresh air pipe is connected with the inner unit, and outdoor air can be conveyed into the inner unit through the fresh air pipe. The exhaust pipe is connected with the indoor unit, and air after heat exchange of the indoor unit can be conveyed to the indoor unit through the exhaust pipe. The defrosting air pipe is connected between the fresh air pipe and the exhaust pipe, when the air conditioning unit defrosts, the inner unit refrigerates, the exhaust pipe conveys cold air flow, and the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe and is discharged outdoors through the fresh air pipe. According to the technical scheme, the comfort of indoor users is not influenced, the problem that the service life of the compressor is influenced because liquid return formed by the refrigerant of the indoor unit cannot be evaporated is solved, and the operation reliability of the compressor is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning unit and a control method of the air conditioning unit.
Background
The defrosting control method of the existing air conditioner comprises the following steps: the air conditioner is converted into refrigeration from a heating mode, a high-temperature refrigerant in a condenser of the outdoor unit is defrosted, at the moment, the indoor unit is a low-temperature refrigerant, in order to prevent cold air blown out from influencing the comfort of users, an indoor fan stops running and cannot perform heat exchange and evaporation, so that a large amount of liquid refrigerant enters a vapor-liquid separator and even flows into a compressor to generate liquid compression, and the service life of the compressor is influenced.
Disclosure of Invention
The embodiment of the invention provides an air conditioning unit and a control method of the air conditioning unit, and aims to solve the technical problem of compressor liquid compression caused by the fact that liquid refrigerants cannot be evaporated during defrosting of the air conditioning unit in the prior art.
The embodiment of the application provides an air conditioning unit, includes: an internal machine; the fresh air pipe is connected with the internal machine, and outdoor air can be conveyed into the internal machine through the fresh air pipe; the exhaust pipe is connected with the internal machine, and air after heat exchange of the internal machine can be conveyed to the indoor through the exhaust pipe; the defrosting air pipe is connected between the fresh air pipe and the exhaust pipe, when the air conditioning unit defrosts, the inner unit refrigerates, the exhaust pipe conveys cold air flow, and the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe and is discharged outdoors through the fresh air pipe.
In one embodiment, the defrosting air pipe is provided with an air valve device, when the air conditioning unit is used for refrigerating or heating, the air valve device closes the defrosting air pipe to be communicated with the exhaust pipe, when the air conditioning unit is used for defrosting, the air valve device closes the exhaust pipe to be communicated with the indoor space, and opens the exhaust pipe to be communicated with the defrosting air pipe.
In one embodiment, the air valve device comprises an air valve and a driving mechanism for driving the air valve to rotate, wherein the air valve comprises a first position for closing the defrosting air pipe and communicating with the exhaust pipe and a second position for closing the exhaust pipe and communicating with the indoor space and opening the exhaust pipe and the defrosting air pipe.
In one embodiment, a fresh air port is formed in the inner machine and is connected with a fresh air pipe, and the fresh air port is also connected with the environment where the inner machine is located.
In one embodiment, an evaporator is provided in the indoor unit, and the evaporator is used for cooling or heating.
In one embodiment, the air conditioning unit is a ducted air conditioning unit and the indoor unit is an indoor unit.
The application also provides a control method of the air conditioning unit, the control method is used for controlling the air conditioning unit, and the control method comprises the following steps: in the heating mode, if a defrosting instruction is received, the indoor unit performs cooling, the exhaust pipe conveys cold air flow, the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe, and the cold air flow is exhausted out of the room through the fresh air pipe; if the defrosting instruction is not received, the indoor unit heats, and the exhaust pipe conveys hot air to the indoor unit.
In one embodiment, an air valve device is arranged on the defrosting air pipe and comprises an air valve and a driving mechanism for driving the air valve to rotate, and the air valve comprises a first position for closing the defrosting air pipe and the exhaust pipe to be communicated and a second position for closing the exhaust pipe and the indoor to be communicated and opening the exhaust pipe and the defrosting air pipe to be communicated; the control method further comprises the following steps: if a defrosting instruction is received, controlling a driving mechanism to drive an air valve to rotate to a second position; and if the defrosting command is not received, controlling the driving mechanism to drive the air valve to rotate to the first position.
In one embodiment, the control method further comprises: detecting the temperature value of an evaporator of an inner machine after defrosting is finished; and if the temperature value is larger than the preset value, controlling the driving mechanism to drive the air valve to rotate to the first position.
In one embodiment, the control method further comprises: and after defrosting is finished, continuously detecting the temperature value of the evaporator of the internal machine within a preset time length.
In the above embodiment, when the air conditioning unit defrosts, directly let the interior machine refrigerate to carry the cold air current through the exhaust pipe, just can let the liquid in the interior machine absorb heat completely and evaporate and become the gaseous state, avoid the problem of compressor liquid compression in the follow-up operating mode. Meanwhile, when the cold air flow generated by the internal unit is conveyed through the exhaust pipe, the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe, and the fresh air pipe is exhausted outdoors, so that the cold air flow is prevented from being conveyed indoors through the exhaust pipe, and the comfort of indoor heating is ensured. Therefore, the technical scheme of the invention can not influence the comfort of indoor users, simultaneously solves the problem that the service life of the compressor is influenced because the refrigerant of the indoor unit cannot be evaporated to form return liquid, and improves the operation reliability of the compressor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic illustration of a partial configuration of an embodiment of an air conditioning assembly according to the present invention;
FIG. 2 is a schematic illustration of the position of movement of the damper of the air conditioning assembly of FIG. 1;
fig. 3 is a schematic flow diagram of a control method of an air conditioning assembly according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In order to solve the technical problem of compressor liquid compression during defrosting of the air conditioning unit in the prior art, as shown in fig. 1, the air conditioning unit comprises an inner unit 10, a fresh air pipe 20, an exhaust pipe 30 and a defrosting air pipe 40, wherein the fresh air pipe 20 is connected with the inner unit 10, and outdoor air can be conveyed into the inner unit 10 through the fresh air pipe 20. The exhaust duct 30 is connected to the indoor unit 10, and the air after heat exchange of the indoor unit 10 can be delivered to the indoor through the exhaust duct 30. The defrosting air pipe 40 is connected between the fresh air pipe 20 and the exhaust pipe 30, when the air conditioning unit defrosts, the internal unit 10 refrigerates, the exhaust pipe 30 conveys cold air flow, the defrosting air pipe 40 conveys the cold air flow conveyed by the exhaust pipe 30 to the fresh air pipe 20, and the fresh air pipe 20 exhausts the air to the outside.
By applying the technical scheme of the invention, when the air conditioning unit defrosts, the inner unit 10 is directly refrigerated, and cold airflow is conveyed through the exhaust pipe 30, so that liquid in the inner unit 10 can completely absorb heat and evaporate into gas, and the problem of compressor liquid compression in subsequent working conditions is avoided. Meanwhile, when the cold airflow generated by the internal unit 10 is conveyed through the exhaust duct 30, the defrosting air duct 40 conveys the cold airflow conveyed by the exhaust duct 30 to the fresh air duct 20, and the cold airflow is exhausted outdoors through the fresh air duct 20, so that the cold airflow is prevented from being conveyed indoors through the exhaust duct 30, and the comfort of indoor heating is ensured. Therefore, the technical scheme of the invention can not influence the comfort of indoor users, simultaneously solves the problem that the service life of the compressor is influenced because the refrigerant of the indoor unit cannot be evaporated to form return liquid, and improves the operation reliability of the compressor.
More preferably, in the technical solution of this embodiment, as shown in fig. 1, an air valve device 41 is disposed on the defrosting air duct 40, when the air conditioning unit is used for cooling or heating, the air valve device 41 closes the defrosting air duct 40 and communicates with the exhaust duct 30, the outdoor air can be delivered into the indoor unit 10 through the fresh air duct 20 for cooling or heating, and then the cold air flow or the hot air flow is delivered into the room through the exhaust duct 30. When the air conditioning unit defrosts, the air valve device 41 closes the exhaust duct 30 to communicate with the indoor space, opens the exhaust duct 30 to communicate with the defrosting air duct 40, and the indoor air or the outdoor air exchanges heat with the indoor unit 10 to promote the evaporation of the refrigerant in the indoor unit 10, and then the cold air flow is conveyed to the defrosting air duct 40 through the exhaust duct 30, and finally the cold air flow is conveyed to the fresh air duct 20 by the defrosting air duct 40 to be discharged to the outdoor space.
As shown in fig. 2, in the solution of the present embodiment, the air valve device 41 includes an air valve 411 and a driving mechanism for driving the air valve 411 to rotate. The air valve 411 comprises a first position for closing the defrosting air pipe 40 and the exhaust pipe 30 and a second position for closing the exhaust pipe 30 and the indoor and opening the exhaust pipe 30 and the defrosting air pipe 40. Alternatively, the driving mechanism may be a combination of a motor and a rack and pinion mechanism, or may be a rotating electric cylinder directly.
As shown in fig. 1, in the technical solution of this embodiment, a fresh air port 11 is opened on an inner machine 10, the fresh air port 11 is connected to a fresh air pipe 20, and the fresh air port 11 is further connected to an environment where the inner machine 10 is located. Therefore, when the air conditioning unit defrosts, indoor air or outdoor air can be utilized to exchange heat with the inner unit 10, so that the refrigerant in the inner unit 10 is fully evaporated.
In the technical scheme of this embodiment, an evaporator is arranged in the internal unit 10, and when the air conditioning unit is used for cooling or heating, the evaporator cools or heats air delivered to the room; during defrosting, the evaporator cools indoor air or outdoor air.
In the technical scheme of the invention, the air conditioning unit is an air duct type air conditioning unit, and the inner unit 10 is an air duct type air conditioning unit 10. In other alternative embodiments, the air conditioning unit may also be a fresh air unit or other type of air conditioning unit.
As shown in fig. 3, the present invention further provides a control method of an air conditioning unit, the control method is used for controlling the air conditioning unit, and the control method includes:
in the heating mode, if a defrosting instruction is received, the internal unit 10 performs cooling, the exhaust duct 30 delivers cold air flow, and the defrosting air duct 40 delivers the cold air flow delivered by the exhaust duct 30 to the fresh air duct 20 and exhausts the cold air flow out of the room through the fresh air duct 20; if the defrosting command is not received, the indoor unit 10 heats up, and the exhaust duct 30 delivers hot air to the indoor.
By applying the technical scheme of the invention, when defrosting is carried out in the heating mode, the internal unit 10 is directly refrigerated, and cold airflow is conveyed through the exhaust pipe 30, so that liquid in the internal unit 10 can completely absorb heat and evaporate into gas, and the problem of compressor liquid compression in subsequent working conditions is avoided. Meanwhile, when the cold airflow generated by the internal unit 10 is conveyed through the exhaust duct 30, the defrosting air duct 40 conveys the cold airflow conveyed by the exhaust duct 30 to the fresh air duct 20, and the cold airflow is exhausted outdoors through the fresh air duct 20, so that the cold airflow is prevented from being conveyed indoors through the exhaust duct 30, and the comfort of indoor heating is ensured. When the heating mode is normal, the indoor unit 10 heats, and the exhaust duct 30 delivers hot air to the indoor. Therefore, the technical scheme of the invention can not influence the comfort of indoor users, simultaneously solves the problem that the service life of the compressor is influenced because the refrigerant of the indoor unit cannot be evaporated to form return liquid, and improves the operation reliability of the compressor.
Alternatively, based on the air valve device 41 described above. The control method further comprises the following steps: if a defrosting instruction is received, controlling the driving mechanism to drive the air valve 411 to rotate to a second position; if the defrosting command is not received, the driving mechanism is controlled to drive the air valve 411 to rotate to the first position.
As a preferred implementation manner, in the technical solution of this embodiment, the control method further includes: after defrosting is finished, detecting the temperature value of the evaporator of the inner machine 10; if the temperature value is larger than the preset value, the driving mechanism is controlled to drive the air valve 411 to rotate to the first position. Therefore, the air after heat exchange can be prevented from being conveyed to the indoor through the exhaust pipe 30 when the temperature of the evaporator is low, and the influence of cold air on the comfort level of a user is avoided. More preferably, the control method further includes: after defrosting is finished, the temperature value of the evaporator of the inner unit 10 is continuously detected for a predetermined time period. Therefore, when the integral temperature of the evaporator is higher, hot air flow is conveyed indoors, and the comfort degree of a user is improved.
The specific implementation scheme is as follows: when the air conditioner heats the operation and sends the defrosting instruction, control actuating mechanism drive blast gate 411 and rotate to the second position, the fan of interior unit 10 lasts the operation and does not shut down, the cold air current that interior unit 10 produced when carrying through exhaust pipe 30, let the cold air current that defrosting tuber pipe 40 carried exhaust pipe 30 transport for fresh air duct 20, it is outdoor through fresh air duct 20 discharge, avoided cold wind to influence user's comfort level, shorten the time of defrosting, solve simultaneously that the indoor set refrigerant can't evaporate to form the problem that the life-span of compressor is influenced to the back liquid. When the air conditioner sends out a defrosting exiting instruction, the temperature of the coil of the evaporator of the indoor unit 10 starts to be detected, and when the temperature of the coil is detected to be more than or equal to 30 ℃ continuously for 30 seconds, the cold air blowing phenomenon caused by too low temperature of the coil after defrosting is finished can be prevented, and the driving mechanism is controlled to drive the air valve 411 to rotate to the first position.
It should be noted that the technical scheme of the invention is suitable for all non-direct-blowing air conditioners, and the method is also suitable for the problem that the pressure is increased too fast instantaneously due to 'cold wind prevention' in the heating start stage of the fixed-frequency mechanism.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An air conditioning assembly, comprising:
an inner machine (10);
the fresh air pipe (20) is connected with the internal machine (10), and outdoor air can be conveyed into the internal machine (10) through the fresh air pipe (20);
the exhaust pipe (30) is connected with the internal unit (10), and air after heat exchange of the internal unit (10) can be conveyed to the indoor through the exhaust pipe (30);
defrosting tuber pipe (40) are connected fresh air pipe (20) with between exhaust pipe (30) during air conditioning unit defrosts, indoor set (10) refrigerate, exhaust pipe (30) carry the cold air current, defrosting tuber pipe (40) will the cold air current that exhaust pipe (30) carried is carried and is given fresh air pipe (20), through fresh air pipe (20) discharge is outdoor.
2. The air conditioning unit according to claim 1, wherein an air valve device (41) is disposed on the defrosting air pipe (40), when the air conditioning unit is used for cooling or heating, the air valve device (41) closes the defrosting air pipe (40) and the exhaust duct (30) to communicate, when the air conditioning unit is used for defrosting, the air valve device (41) closes the exhaust duct (30) and the indoor to communicate, and opens the exhaust duct (30) and the defrosting air pipe (40) to communicate.
3. Air conditioning unit according to claim 2, characterized in that said air valve means (41) comprises an air valve (411) and a driving mechanism for driving said air valve (411) to rotate, said air valve (411) comprising a first position for closing said defrosting duct (40) in communication with said exhaust duct (30) and a second position for closing said exhaust duct (30) in communication with said room and opening said exhaust duct (30) in communication with said defrosting duct (40).
4. The air conditioning unit according to claim 1, wherein a fresh air inlet (11) is provided on the inner unit (10), the fresh air inlet (11) is connected to the fresh air duct (20), and the fresh air inlet (11) is further connected to an environment where the inner unit (10) is located.
5. Air conditioning unit according to claim 1, characterized in that an evaporator is provided in the inner unit (10), said evaporator being used for cooling or heating.
6. Air conditioning unit according to claim 1, characterized in that the air conditioning unit is a ducted air conditioning unit and the indoor unit (10) is an air indoor unit (10).
7. A control method of an air conditioning unit, characterized in that the control method is used for controlling the air conditioning unit according to any one of claims 1 to 6, and the control method comprises:
in the heating mode, if a defrosting instruction is received, the internal unit (10) performs cooling, the exhaust pipe (30) conveys cold air flow, and the defrosting air pipe (40) conveys the cold air flow conveyed by the exhaust pipe (30) to the fresh air pipe (20) and exhausts the cold air flow out of the room through the fresh air pipe (20); if the defrosting instruction is not received, the indoor unit (10) heats, and the exhaust pipe (30) conveys hot air to the indoor.
8. The control method according to claim 7, characterized in that an air valve device (41) is arranged on the defrosting air pipe (40), the air valve device (41) comprises an air valve (411) and a driving mechanism for driving the air valve (411) to rotate, the air valve (411) comprises a first position for closing the defrosting air pipe (40) and communicating with the exhaust duct (30) and a second position for closing the exhaust duct (30) and communicating with the indoor space and opening the exhaust duct (30) and communicating with the defrosting air pipe (40);
the control method further comprises the following steps: if a defrosting instruction is received, controlling the driving mechanism to drive the air valve (411) to rotate to a second position; and if the defrosting command is not received, controlling the driving mechanism to drive the air valve (411) to rotate to the first position.
9. The control method according to claim 8, characterized by further comprising:
after defrosting is finished, detecting the temperature value of the evaporator of the internal machine (10);
and if the temperature value is larger than a preset value, controlling the driving mechanism to drive the air valve (411) to rotate to a first position.
10. The control method according to claim 9, characterized by further comprising:
and after defrosting is finished, continuously detecting the temperature value of the evaporator of the internal machine (10) within a preset time length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010555199.XA CN111678206A (en) | 2020-06-17 | 2020-06-17 | Air conditioning unit and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010555199.XA CN111678206A (en) | 2020-06-17 | 2020-06-17 | Air conditioning unit and control method thereof |
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| CN111678206A true CN111678206A (en) | 2020-09-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460780A (en) * | 2020-12-16 | 2021-03-09 | 珠海格力电器股份有限公司 | Air conditioner with variable air duct and control method |
| CN113339938A (en) * | 2021-05-25 | 2021-09-03 | 青岛海尔空调器有限总公司 | Method and device for controlling defrosting of air conditioner and air conditioner |
| CN114263978A (en) * | 2022-01-11 | 2022-04-01 | 珠海格力电器股份有限公司 | Indoor unit, air conditioning unit and control method thereof |
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| JP2000337664A (en) * | 1999-05-27 | 2000-12-08 | Fukuchi Kenso:Kk | Ventilating/heat exhausting fan for outdoor unit |
| KR20110065137A (en) * | 2009-12-09 | 2011-06-15 | 한라공조주식회사 | Air conditioner for automotive vehicles |
| CN205736772U (en) * | 2016-06-06 | 2016-11-30 | 珠海格力电器股份有限公司 | Electric automobile air conditioning system and electric automobile |
| CN106287995A (en) * | 2016-10-28 | 2017-01-04 | 合肥美的暖通设备有限公司 | A kind of air-duct-type air-conditioner and control method, air duct type air conditioning indoor machine |
| CN107894061A (en) * | 2017-10-23 | 2018-04-10 | 合肥美的暖通设备有限公司 | Fresh air conditioner-mechanical, defrosting method and computer-readable recording medium |
| CN212339449U (en) * | 2020-06-17 | 2021-01-12 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| CN112460780A (en) * | 2020-12-16 | 2021-03-09 | 珠海格力电器股份有限公司 | Air conditioner with variable air duct and control method |
| CN113339938A (en) * | 2021-05-25 | 2021-09-03 | 青岛海尔空调器有限总公司 | Method and device for controlling defrosting of air conditioner and air conditioner |
| CN114263978A (en) * | 2022-01-11 | 2022-04-01 | 珠海格力电器股份有限公司 | Indoor unit, air conditioning unit and control method thereof |
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