CN108800440B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN108800440B CN108800440B CN201810629082.4A CN201810629082A CN108800440B CN 108800440 B CN108800440 B CN 108800440B CN 201810629082 A CN201810629082 A CN 201810629082A CN 108800440 B CN108800440 B CN 108800440B
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- air conditioner
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010257 thawing Methods 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F24F11/70—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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a control method thereof, wherein the air conditioner comprises: the compressor, the four-way valve, the outdoor heat exchanger, the indoor heat exchanger, the throttling element and the bypass branch are connected in series, the throttling element is connected to a connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger, the bypass branch is located between the indoor heat exchanger and the outdoor heat exchanger and is connected with the throttling element in parallel, and the bypass branch is provided with a control valve for controlling the bypass branch to be switched between a conducting state and a disconnecting state. When the air conditioner is in a defrosting state, the bypass branch is in a conducting state. According to the air conditioner, the bypass branch circuit connected with the throttling element in parallel is arranged, and when the air conditioner is in a defrosting mode, the bypass branch circuit can be controlled to be in a conducting state, so that the flow of a refrigerant can be improved, the defrosting period of the air conditioner is shortened, the defrosting efficiency and the defrosting effect of the air conditioner are improved, and the user experience of the air conditioner is further improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof.
Background
Under the heating state of the air conditioner, under the low-temperature working condition, after the air conditioner continuously operates for a period of time, the outdoor unit releases heat due to evaporation, the surface temperature is reduced, water molecules in the air are condensed into a frost layer on the surface of a heat exchanger of the outdoor unit, the thickness of the frost layer can be increased along with the continuous operation of heating, and the heat exchange effect of the outdoor heat exchanger is greatly weakened.
In the related art, a heating-to-cooling mode is adopted to eliminate the frost layer of the condenser. In the defrosting process, the capillary throttling device cannot be adjusted because the flow rate is fixed. When the air conditioner operates in a heating defrosting mode, the defrosting effect of the air conditioner is greatly related to the throttling flow of the refrigeration capillary, and when the capillary is throttled, the flow rate of the whole high-temperature refrigerant is slow, so that the defrosting completion time is long and the effect is poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an air conditioner which has the advantages of simple structure and high defrosting efficiency.
The invention also provides a control method of the air conditioner, and the control method has the advantages of convenience in operation and reliability in operation.
An air conditioner according to an embodiment of the present invention includes: a compressor having a discharge port and a return port; the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is communicated with the exhaust port, the fourth valve port is communicated with the return air port, and the first valve port is in switchable communication with the second valve port and the third valve port; one end of the outdoor heat exchanger is communicated with the second valve port; one end of the indoor heat exchanger is communicated with the third valve port; the throttling element is connected in series on a connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger; the bypass branch is positioned between the indoor heat exchanger and the outdoor heat exchanger and is connected with the throttling element in parallel, and the bypass branch is provided with a control valve for controlling the bypass branch to be switched between a conducting state and a disconnecting state; when the air conditioner is in a defrosting state, the bypass branch is in a conducting state.
According to the air conditioner provided by the embodiment of the invention, the bypass branch circuit connected with the throttling element in parallel is arranged, and when the air conditioner is in a defrosting mode, the bypass branch circuit can be controlled to be in a conducting state, so that the flow of a refrigerant can be improved, the defrosting period of the air conditioner is shortened, the defrosting efficiency and the defrosting effect of the air conditioner are improved, and the user experience of the air conditioner is further improved.
According to some embodiments of the invention, the restriction element is a capillary tube assembly.
In some embodiments of the invention, the control valve is a solenoid control valve.
According to some embodiments of the invention, further comprising: and the control assembly is connected with the control valve and controls the opening and closing of the control valve.
In some embodiments of the invention, further comprising: the temperature sensor is connected with the control assembly, the temperature sensor is used for detecting the outdoor temperature, and the control assembly controls the opening and closing of the control valve according to the detection result of the temperature sensor.
According to some embodiments of the invention, further comprising: the filter is connected in series with the connecting pipeline, and the bypass branch and the throttling element are both connected with the filter.
According to the control method of the air conditioner provided by the embodiment of the invention, the air conditioner is the air conditioner, and the control method comprises the following steps: judging the operation mode of the air conditioner; when the air conditioner is in a cooling or heating mode, the bypass branch is in a disconnected state; when the air conditioner is in a defrosting mode, the bypass branch is in a conducting state.
According to the control method of the air conditioner, the bypass branch can be switched between the on state and the off state according to the operation mode of the air conditioner. When the air conditioner is in the defrosting mode, the bypass branch is in a conducting state, so that the flow of the refrigerant in the connecting branch can be increased, and the defrosting efficiency and the defrosting effect of the air conditioner are improved.
According to some embodiments of the present invention, the air conditioner has a temperature sensor for detecting an outdoor temperature, and the control valve is periodically opened and closed when the air conditioner is in a cooling mode and the temperature sensor detects that the outdoor temperature T1 is greater than or equal to a preset temperature T0.
In some embodiments of the present invention, the preset temperature T0 is 53 ℃.
According to some embodiments of the present invention, the air conditioner is the air conditioner according to claim 5, when the air conditioner is in the heating mode and the temperature sensor detects that the outdoor temperature T2 satisfies: the control valve is opened and closed periodically when the temperature is more than or equal to 2 ℃ and less than or equal to T2 and less than or equal to 2 ℃.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 2 is a partial structural view of an air conditioner according to an embodiment of the present invention.
Reference numerals:
the air-conditioner (100) is provided with,
a four-way valve 20, a first port 21, a second port 22, a third port 23, a fourth port 24,
the outdoor heat exchanger (30) is provided with,
the indoor heat exchanger 40 is provided with a heat exchanger,
a connecting line 50, a throttling element 510, a cooling capillary tube 511, a heating auxiliary capillary tube 512, a filter 520,
the flow of the bypass branch 60, the control valve 610,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An air conditioner 100 and a control method thereof according to an embodiment of the present invention will be described below with reference to fig. 1 and 2.
As shown in fig. 1, according to an air conditioner 100 of an embodiment of the present invention, the air conditioner 100 includes: a compressor 10, a four-way valve 20, an outdoor heat exchanger 30, an indoor heat exchanger 40, a throttling element 510, and a bypass branch 60.
Specifically, as shown in FIG. 1, the compressor 10 has a discharge port 110 and a return port 120. The refrigerant compressed by the compressor 10 may be discharged from the discharge port 110, and the heat-exchanged refrigerant may return to the compressor 10 from the return port 120, thereby implementing a circulation flow of the refrigerant.
The four-way valve 20 may include: the first valve port 21 is communicated with the exhaust port 110, the fourth valve port 24 is communicated with the return air port 120, the first valve port 21 is in switchable communication with the second valve port 22 and the third valve port 23, one end of the outdoor heat exchanger 30 is communicated with the second valve port 22, and one end of the indoor heat exchanger 40 is communicated with the third valve port 23. Accordingly, the refrigerant can flow in different directions by switching the four-way valve 20, thereby realizing different operation modes of the air conditioner 100, such as cooling, heating, defrosting, and the like.
As shown in fig. 1 and 2, the throttling element 510 is connected in series to the connecting line 50 between the indoor heat exchanger 40 and the outdoor heat exchanger 30, the bypass line 60 is located between the indoor heat exchanger 40 and the outdoor heat exchanger 30, and the bypass line 60 is connected in parallel to the throttling element 510, and the bypass line 60 has a control valve 610 that controls switching between an on state and an off state thereof. Wherein the bypass branch 60 is in a conducting state when the air conditioner 100 is in a defrosting state. Thus, when the air conditioner 100 is in the defrosting state, a part of the refrigerant flows through the throttle unit 510, and another part of the refrigerant can flow through the bypass branch 60. Therefore, the flow rate of the refrigerant is improved, the defrosting time can be shortened, and the defrosting efficiency and the defrosting effect are improved.
According to the air conditioner 100 of the embodiment of the invention, by arranging the bypass branch 60 connected in parallel with the throttling element 510, when the air conditioner 100 is in the defrosting mode, the bypass branch 60 can be controlled to be in the conducting state, so that the flow of the refrigerant can be improved, the defrosting period of the air conditioner 100 is shortened, the defrosting efficiency and the defrosting effect of the air conditioner 100 are improved, and the user experience of the air conditioner 100 is further improved.
According to some embodiments of the invention, as shown in FIG. 2, the throttling element 510 may be a capillary assembly. Thus, the cost of the throttling element 510 may be reduced, thereby reducing the production cost of the air conditioner 100. It can be understood that the capillary tube assembly can perform the functions of reducing temperature and pressure of the refrigerant flowing through the capillary tube assembly. Since the flow rate of the capillary tube assembly is fixed and cannot be adjusted, the bypass branch 60 is connected in parallel with the capillary tube assembly, so that the flow rate of the refrigerant can be controlled by controlling the connection and disconnection of the bypass branch 60. When the air conditioner 100 is in the defrosting mode, the bypass branch 60 is turned on, thereby increasing the flow rate of the high-temperature refrigerant, and thus increasing the defrosting efficiency of the air conditioner 100.
In some embodiments of the present invention, the control valve 610 may be a solenoid-operated valve. It will be appreciated that by providing the control valve 610 as a solenoid-operated valve, sensitive, precise control of the opening and closing of the control valve 610 is facilitated. It should be noted that the air conditioner 100 can control the opening and closing states of the control valve 610 according to different operation modes of the air conditioner 100, thereby improving the stability and reliability of the operation of the air conditioner 100.
According to some embodiments of the present invention, the air conditioner 100 may further include: and the control assembly is connected with the control valve 610, and the control assembly controls the opening and closing of the control valve 610. It should be noted that the control assembly may be programmed to automatically control the opening and closing of the solenoid control valve 610 according to a program. Therefore, the opening and closing of the control valve 610 can be automatically controlled in different operation modes of the air conditioner 100, thereby improving the intelligence and automation of the air conditioner 100.
In some embodiments of the present invention, the air conditioner 100 may further include: and the temperature sensor is connected with the control assembly and used for detecting the outdoor temperature, and the control assembly controls the opening and closing of the control valve 610 according to the detection result of the temperature sensor. It should be noted that the control component can automatically control the on/off of the bypass branch 60 according to the outdoor temperature detected by the temperature sensor, so that the air conditioner 100 is more intelligent and automatic.
According to some embodiments of the present invention, as shown in fig. 2, the air conditioner 100 may further include: the filter 520, the filter 520 are connected in series to the connecting line 50, and the bypass line 60 and the throttle element 510 are connected to the filter 520. Thus, the filter 520 may filter the refrigerant flowing through the connection pipe 50. For example, the filter 520 may filter out impurities, oil, and the like in the refrigerant, so that the stability and reliability of the operation of the air conditioner 100 may be improved.
According to the control method of the air conditioner 100 of the embodiment of the present invention, the air conditioner 100 is the air conditioner 100 described above, and the control method includes:
determining an operation mode of the air conditioner 100;
when the air conditioner 100 is in the cooling or heating mode, the bypass branch 60 is in the off state. This enables the normal cooling or heating function of the air conditioner 100.
When the air conditioner 100 is in the defrost mode, the bypass branch 60 is in a conducting state. This increases the flow rate of the refrigerant in the connection pipe 50, thereby improving the defrosting effect of the air conditioner 100.
According to the control method of the air conditioner 100 of the embodiment of the present invention, the bypass branch 60 may be switched between the on state and the off state according to the operation mode of the air conditioner 100. When the air conditioner 100 is in the defrosting mode, the bypass branch 60 is in the conducting state, so that the flow rate of the refrigerant in the connecting branch can be increased, and the defrosting efficiency and the defrosting effect of the air conditioner 100 are improved.
According to some embodiments of the present invention, the air conditioner 100 has a temperature sensor for detecting an outdoor temperature, and the control valve 610 is periodically opened and closed when the air conditioner 100 is in a cooling mode and the temperature sensor detects that the outdoor temperature T1 is greater than or equal to a preset temperature T0, i.e., the air conditioner 100 is in a high-temperature cooling mode. It should be noted that when the air conditioner 100 is operated in the high temperature cooling mode, the pressure inside the condenser and the throttling element 510 is large. In order to avoid damage to the internal components of the air conditioner 100 due to excessive pressure, the air conditioner 100 may be provided with a predetermined current, and the air conditioner 100 may activate shutdown protection when the current of the circuit in the air conditioner 100 exceeds the predetermined current. When the air conditioner 100 operates in the high-temperature refrigeration mode, the control valve 610 is periodically opened and closed to play a role in unloading protection, so that automatic shutdown of the air conditioner 100 can be effectively avoided, and user experience of the air conditioner 100 is improved.
In some embodiments of the present invention, the preset temperature T0 is 53 ℃. That is, when the outdoor temperature is equal to or higher than 53 ℃, that is, the air conditioner 100 is in the ultra-high temperature cooling mode, the bypass branch 60 is conducted to perform unloading protection on the air conditioner 100.
According to some embodiments of the present invention, the air conditioner 100 has a temperature sensor for detecting an outdoor temperature, and when the air conditioner 100 is in the heating mode, and the temperature sensor detects that the outdoor temperature T2 satisfies: and when the temperature is between 2 ℃ below zero and T2 is between 2 ℃ below zero and 2 ℃, the control valve 610 is opened and closed periodically. It should be noted that when the outdoor temperature is-2 ℃ to T2 of 2 ℃, the humidity in the outdoor air is high and frosting is easy, and by periodically opening or closing the control valve 610, part of the refrigerant can flow through the bypass branch 60, thereby increasing the condensing temperature of the outdoor unit of the air conditioner, effectively prolonging the frosting period of the outdoor heat exchanger 30, and improving the stability and reliability of the operation of the air conditioner 100.
An air conditioner 100 according to an embodiment of the present invention is described in detail in a specific embodiment with reference to fig. 1 and 2. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.
As shown in fig. 1, the air conditioner 100 includes: compressor 10, four-way valve 20, outdoor heat exchanger 30, indoor heat exchanger 40, throttling element 510, bypass 60, control components and temperature sensor.
As shown in fig. 1, the compressor 10 has an exhaust port 110 and a return port 120, the four-way valve 20 includes a first port 21, a second port 22, a third port 23 and a fourth port 24, the first port 21 is communicated with the exhaust port 110, the fourth port 24 is communicated with the return port 120, and the first port 21 is switchably communicated with the second port 22 and the third port 23. One end of the outdoor heat exchanger 30 communicates with the second valve port 22, and one end of the indoor heat exchanger 40 communicates with the third valve port 23.
The throttling element 510 is a capillary tube assembly, and the throttling element 510 is connected in series to the connection line 50 between the indoor heat exchanger 40 and the outdoor heat exchanger 30. As shown in fig. 2, the throttling element 510 includes: a cooling capillary tube 511 and a heating auxiliary capillary tube 512. The cooling capillary tube 511 serves as a throttling device in a direct cooling state, and the heating auxiliary capillary tube 512 serves as a throttling device in a heating state.
The bypass branch 60 is located between the indoor heat exchanger 40 and the outdoor heat exchanger 30, and the bypass branch 60 is connected in parallel with the throttling element 510. The flow rate of the bypass branch 60 can be designed according to the actual requirement. The filter 520 is connected in series to the connecting line 50, and the bypass line 60 and the throttle element 510 are connected to the filter 520. The bypass branch 60 has a solenoid control valve 610, the solenoid control valve 610 being connected to the control assembly. The temperature sensor is used for detecting the outdoor temperature, and the control component controls the opening and closing of the control valve 610 according to the detection result of the temperature sensor so as to control the bypass branch 60 to switch between the on state and the off state.
A control method of an air conditioner 100, the control method comprising:
determining an operation mode of the air conditioner 100;
when the air conditioner 100 is in the cooling mode and the temperature sensor detects that the outdoor temperature is lower than 53 ℃, the solenoid control valve 610 is closed and the bypass branch 60 is in the open state. Thus, the normal cooling function of the air conditioner 100 is realized;
when the air conditioner 100 is in the cooling mode and the temperature sensor detects that the outdoor temperature is not lower than 53 ℃, that is, the air conditioner 100 is in the ultra-high temperature cooling mode, the control component controls the electromagnetic control valve 610 to be opened and closed periodically according to a preset program, so that the bypass branch 60 is switched between the on state and the off state periodically. Therefore, the unloading protection function can be realized by using the bypass branch 60, the shutdown protection of the air conditioner 100 is avoided, and the user experience of the air conditioner 100 is improved.
When the air conditioner 100 is in the heating mode and the outdoor temperature detected by the temperature detection sensor is in the range of-2 to 2 ℃, that is, when the air conditioner 100 is in the high humidity and low temperature heating mode. The solenoid control valve 610 is periodically opened and closed to periodically switch the bypass branch 60 between the on state and the off state. Therefore, the frosting time of the air conditioner 100 can be prolonged, and the user experience of the air conditioner 100 can be improved.
When the air conditioner 100 is in the heating mode and the outdoor temperature detected by the temperature sensor is not-2 ℃ to 2 ℃, the electromagnetic control valve 610 is closed and the bypass branch 60 is in the off state. Thereby, a normal heating function of the air conditioner 100 can be realized.
When the air conditioner 100 is in the defrost mode, the solenoid control valve 610 is opened and the bypass branch 60 is in a conducting state. Accordingly, the bypass branch 60 may increase the flow rate of the refrigerant, thereby improving the defrosting efficiency and the defrosting effect of the air conditioner 100.
Therefore, by arranging the bypass branch 60 connected in parallel with the throttling element 510, when the air conditioner 100 is in the defrosting mode, the bypass branch 60 can be controlled to be in the conducting state, so that the flow of the refrigerant can be improved, the defrosting period of the air conditioner 100 is shortened, the defrosting efficiency and the defrosting effect of the air conditioner 100 are improved, and the user experience of the air conditioner 100 is further improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. An air conditioner, comprising:
a compressor having a discharge port and a return port;
the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is communicated with the exhaust port, the fourth valve port is communicated with the return air port, and the first valve port is in switchable communication with the second valve port and the third valve port;
one end of the outdoor heat exchanger is communicated with the second valve port;
one end of the indoor heat exchanger is communicated with the third valve port;
the throttling element is connected in series on a connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger;
the bypass branch is positioned between the indoor heat exchanger and the outdoor heat exchanger and is connected with the throttling element in parallel, and the bypass branch is provided with a control valve for controlling the bypass branch to be switched between a conducting state and a disconnecting state;
when the air conditioner is in a defrosting state, the bypass branch is in a conducting state;
the control assembly is connected with the control valve, and the control assembly controls the opening and closing of the control valve;
the temperature sensor is connected with the control assembly and used for detecting the outdoor temperature, the control assembly controls the control valve to be opened and closed according to the detection result of the temperature sensor, and when the air conditioner is in a refrigeration mode and the temperature sensor detects that the outdoor temperature T1 is greater than or equal to a preset temperature T0, the control assembly controls the control valve to be opened and closed periodically;
when the air conditioner is in a heating mode and the temperature sensor detects that the outdoor temperature T2 satisfies: -2 ℃ T2 ≦ 2 ℃, the control assembly controlling the control valve to open and close periodically.
2. The air conditioner of claim 1, wherein the throttling element is a capillary assembly.
3. The air conditioner according to claim 1, wherein the control valve is an electromagnetic control valve.
4. The air conditioner according to claim 1, further comprising: the filter is connected in series with the connecting pipeline, and the bypass branch and the throttling element are both connected with the filter.
5. A control method of an air conditioner, characterized in that the air conditioner is the air conditioner according to any one of claims 1 to 4, the control method comprising:
judging the operation mode of the air conditioner;
when the air conditioner is in a refrigerating mode and the temperature sensor detects that the outdoor temperature T1 is greater than or equal to a preset temperature T0, the control valve is opened and closed periodically; when the air conditioner is in a heating mode, and the temperature sensor detects that the outdoor temperature T2 meets the following conditions: -the control valve is opened and closed periodically at 2 ℃ ≦ T2 ≦ 2 ℃;
when the air conditioner is in a defrosting mode, the bypass branch is in a conducting state.
6. The control method of an air conditioner according to claim 5, wherein the preset temperature T0 is 53 ℃.
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| CN110260554A (en) * | 2019-07-03 | 2019-09-20 | 芜湖美智空调设备有限公司 | Air conditioner |
| CN110542236B (en) * | 2019-09-12 | 2022-04-26 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof, and computer-readable storage medium |
| CN110762755B (en) * | 2019-10-30 | 2021-09-28 | Tcl空调器(中山)有限公司 | Defrosting control device and control method of air conditioner |
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| JPH09318229A (en) * | 1996-05-24 | 1997-12-12 | Mitsubishi Heavy Ind Ltd | Refrigerating device |
| CN101140121A (en) * | 2007-09-30 | 2008-03-12 | 无锡同方人工环境有限公司 | Capillary throttling set for heat pump machine group |
| CN201314726Y (en) * | 2008-09-02 | 2009-09-23 | Tcl集团股份有限公司 | Parallel flow air conditioner |
| CN204630138U (en) * | 2015-04-29 | 2015-09-09 | 广东美的制冷设备有限公司 | Air-conditioner |
| CN105928265A (en) * | 2016-05-31 | 2016-09-07 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method thereof |
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| CN108800440A (en) | 2018-11-13 |
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Effective date of registration: 20240403 Address after: 528311 Factory Building No. 22-13, Lingang Road, Shunjiang Community, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee after: FOSHAN MIDEA KAILI REFRIGERATION EQUIPMENT Co.,Ltd. Country or region after: China Patentee after: GD MIDEA AIR-CONDITIONING EQUIPMENT Co.,Ltd. Address before: 528311 Lingang Road, Beijiao Town, Shunde District, Foshan, Guangdong Patentee before: GD MIDEA AIR-CONDITIONING EQUIPMENT Co.,Ltd. Country or region before: China Patentee before: MIDEA GROUP Co.,Ltd. |