CN114992799A - Air conditioner outdoor unit and control method of air conditioner - Google Patents
Air conditioner outdoor unit and control method of air conditioner Download PDFInfo
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- CN114992799A CN114992799A CN202210481888.XA CN202210481888A CN114992799A CN 114992799 A CN114992799 A CN 114992799A CN 202210481888 A CN202210481888 A CN 202210481888A CN 114992799 A CN114992799 A CN 114992799A
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- 238000000034 method Methods 0.000 title claims description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000010257 thawing Methods 0.000 abstract description 7
- 239000003570 air Substances 0.000 description 113
- 239000007788 liquid Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
-
- 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
-
- 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
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and particularly provides an air conditioner outdoor unit. The problem that indoor experience is influenced because an existing air conditioner cannot continuously heat in a defrosting mode is solved. The outdoor unit of an air conditioner of the present invention comprises: the outdoor fan comprises a first fan and a second fan, the heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, a first heat exchange channel is formed by the first heat exchanger in an enclosing mode, a second heat exchange channel is formed by the second heat exchanger in an enclosing mode, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is arranged at the first end of the first heat exchange channel, the second fan is arranged at the joint of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is arranged on the outer side of the first heat exchanger in an enclosing mode. When the air conditioner is in a continuous heating mode, the third heat exchanger is controlled to be a condenser, the first heat exchanger and the second heat exchanger are controlled to be evaporators, the first fan is controlled to rotate reversely, and the second fan is controlled to rotate reversely.
Description
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides an air conditioner outdoor unit and a control method of an air conditioner.
Background
Along with the continuous improvement of people's standard of living, people are also higher and higher to the demand of indoor environment comfort level, consequently, air conditioning unit is also indispensable in daily life's effect. Generally, an air conditioning unit includes an indoor unit, an outdoor unit, and a circulation loop for connecting the indoor unit and the outdoor unit, where the outdoor unit of the air conditioning unit includes a heat exchanger, and a refrigerant continuously exchanges heat between the outdoor unit and the indoor unit through the circulation loop and the heat exchanger to reach an indoor comfortable temperature. However, in some cases, the configuration and usage of the air conditioning unit cannot fully meet the requirements of users due to the influence of the outdoor environment. For example, in a heating mode of an air conditioner, a heat exchanger of an outdoor unit is in a low-temperature state, the outdoor heat exchanger is prone to surface frosting at a low temperature, the surface frosting of the heat exchanger of the outdoor unit is prone to affecting heat exchange efficiency, the conventional air conditioner performs defrosting on the heat exchanger of the outdoor unit through a defrosting mode, but indoor heating cannot be performed continuously in the defrosting mode, and at the moment, user experience is greatly reduced.
Accordingly, there is a need in the art for a new outdoor unit of an air conditioner to solve the problem that the indoor experience is affected due to the fact that the existing air conditioner cannot continuously heat in the defrosting mode.
Disclosure of Invention
The invention aims to solve the technical problem that the indoor experience is influenced because the existing air conditioner cannot continuously heat in a defrosting mode.
In a first aspect, the present invention provides an outdoor unit of an air conditioner, including a heat exchanger and an outdoor fan, where the outdoor fan includes a first fan and a second fan, the heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger, the first heat exchanger surrounds a first heat exchange channel, the second heat exchanger surrounds a second heat exchange channel, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is disposed at a first end of the first heat exchange channel, the second fan is disposed at a junction of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger surrounds an outer side of the first heat exchanger.
In the above preferred technical solution of the outdoor unit of an air conditioner, the outdoor unit further includes a housing, the first heat exchanger, the second heat exchanger, the third heat exchanger, the first fan and the second fan are disposed inside the housing, the first heat exchanger and the second heat exchanger are stacked up and down, the third heat exchanger surrounds the outside of the first heat exchanger above, correspondingly, an air outlet is disposed on the top surface of the housing, the air outlet is disposed corresponding to the first fan, and an air inlet is disposed on the bottom surface and/or the side surface of the housing.
The invention also provides a control method of the air conditioner, the air conditioner comprises an air conditioner outdoor unit, the air conditioner outdoor unit comprises a heat exchanger and an outdoor fan, the outdoor fan comprises a first fan and a second fan, the heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, the first heat exchanger is surrounded by a first heat exchange channel, the second heat exchanger is surrounded by a second heat exchange channel, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is arranged at the first end of the first heat exchange channel, the second fan is arranged at the joint of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is surrounded at the outer side of the first heat exchanger;
the control method comprises the following steps:
acquiring an operation mode of the air conditioner;
when the air conditioner is in a continuous heating mode, controlling the third heat exchanger to be a condenser and controlling the first heat exchanger and the second heat exchanger to be evaporators;
and controlling the first fan to rotate reversely and controlling the second fan to rotate reversely.
In a preferred embodiment of the above method for controlling an air conditioner, the step of "controlling the first fan to rotate in reverse and controlling the second fan to rotate in reverse" further includes:
the speed of reverse rotation of the first fan is controlled to be V1, the speed of reverse rotation of the second fan is controlled to be V2, and V1 is controlled to be < V2.
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
when the air conditioner is in a normal heating mode, controlling the first heat exchanger, the second heat exchanger and the third heat exchanger to be evaporators;
and controlling the first fan to rotate forwards and controlling the second fan to rotate forwards.
In a preferred embodiment of the above method for controlling an air conditioner, the step of "controlling the first fan to rotate forward and the step of controlling the second fan to rotate forward" further includes:
the speed of the first fan is controlled to be V3, the speed of the second fan is controlled to be V4, and V3 is controlled to be not less than V4.
In a preferred embodiment of the control method of the air conditioner, the control method further includes:
and when the air conditioner is in a heat exchanger foreign matter cleaning mode, controlling the first fan to rotate reversely and controlling the second fan to rotate forwardly.
In a preferred embodiment of the control method of the air conditioner, the control method further includes:
when the air conditioner is in a normal refrigeration mode, controlling the first heat exchanger, the second heat exchanger and the third heat exchanger to be condensers;
and controlling the first fan to rotate forwards and controlling the second fan to rotate forwards.
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
when the air conditioner is in a forced cooling mode, controlling one or more of the first heat exchanger, the second heat exchanger and the third heat exchanger to be a condenser;
and controlling the first wind to reversely rotate and controlling the second fan to reversely rotate.
In a preferred embodiment of the above method for controlling an air conditioner, the step of "controlling the first fan to rotate in reverse and controlling the second fan to rotate in reverse" further includes:
the speed of the first fan is controlled to be V5, the speed of the second fan is controlled to be V6, and V6 is controlled to be not less than V5.
As can be understood by those skilled in the art, in the technical scheme of the present invention, the outdoor unit of the air conditioner includes a heat exchanger and an outdoor fan, the outdoor fan includes a first fan and a second fan, the heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger, the first heat exchanger encloses a first heat exchange channel, the second heat exchanger encloses a second heat exchange channel, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is disposed at a first end of the first heat exchange channel, the second fan is disposed at a junction of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger encloses an outer side of the first heat exchanger. And when the air conditioner is in a continuous heating mode, controlling the third heat exchanger to be a condenser, controlling the first heat exchanger and the second heat exchanger to be evaporators, and controlling the first fan to rotate reversely and the second fan to rotate reversely.
Under the condition of adopting the technical scheme, the invention provides a specific structural scheme capable of realizing a continuous heating mode, and specifically, the continuous heating mode scheme is as follows: the third heat exchanger is controlled to release heat to the outdoor, the first heat exchanger and the second heat exchanger are controlled to be evaporators, the first fan is controlled to rotate reversely, the second fan is controlled to rotate reversely, at the moment, hot air generated by heat exchange between the third heat exchanger and the outdoor is blown from outside to inside, the hot air exchanges heat with the first heat exchanger firstly, the warm air after heat exchange with the first heat exchanger is blown out to the second heat exchange channel through the second fan, the warm air blown into the second heat exchange channel exchanges heat with the second heat exchanger, the warm air can move upwards, the warm air can be prevented from directly radiating from the top due to the reverse rotation of the first fan, the first heat exchanger is fully ensured to absorb enough heat to avoid frosting, the warm air is prevented from radiating from the side of the first heat exchanger due to the reverse rotation of the second fan, the second heat exchanger is fully ensured to absorb enough heat to avoid frosting, and the whole heat loss is controlled at an excellent level, the most of the heat dissipated from the third heat exchanger is absorbed by the first heat exchanger and the second heat exchanger, and the efficiency is greatly improved.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a side view showing a positional relationship between an outdoor fan and a heat exchanger of an outdoor unit of an air conditioner according to the present invention;
fig. 2 is a plan view showing a positional relationship between an outdoor fan and a heat exchanger of an outdoor unit of an air conditioner according to the present invention;
fig. 3 is a schematic view illustrating the heat exchange direction of air by an outdoor fan in the continuous heating and forced cooling mode of the outdoor unit of the air conditioner according to the present invention;
fig. 4 is a schematic view illustrating a heat exchange direction of air by an outdoor fan in a conventional heating and cooling mode of the outdoor unit of the air conditioner of the present invention;
fig. 5 is a schematic view illustrating a foreign material discharge direction of an outdoor unit of an air conditioner according to the present invention in a foreign material cleaning mode;
fig. 6 is a system diagram illustrating an outdoor unit of an air conditioner of the present invention operating in a continuous heating mode;
fig. 7 is a system diagram of an outdoor unit of an air conditioner of the present invention operating in a conventional heating mode;
fig. 8 is a system diagram illustrating an outdoor unit of an air conditioner of the present invention operated in a normal cooling mode;
fig. 9 is a schematic view illustrating a control method of an outdoor unit of an air conditioner in a continuous heating mode according to the present invention;
fig. 10 is a schematic diagram illustrating a control method of an outdoor unit of an air conditioner according to another mode of the present invention.
List of reference numerals:
1. an outdoor fan; 11. a first fan; 12. a second fan; 2. a heat exchanger; 21. a first heat exchanger; 211. a first heat exchange channel; 2111. a first end of a first heat exchange channel; 2112. a second end of the first heat exchange channel; 22. a second heat exchanger; 221. a second heat exchange channel; 2211 a first end of a second heat exchange channel; 2212. a second end of the second heat exchange channel; 23. a third heat exchanger; 3. a partition plate; 4. a compressor; 5. an oil separator; 61. a first four-way valve; 62. a second four-way valve; 63. a third four-way valve; 71. a first expansion valve; 72. a second expansion valve; 73. a third expansion valve; 8. a gas-liquid separator; 9. a subcooler; 10. a gas conduit; 101. a liquid conduit.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although the description is made by overlapping the first heat exchanger and the second heat exchanger, it is obvious that the present invention may adopt other arrangement manners, for example, the first heat exchanger and the second heat exchanger are arranged in front of and behind each other, as long as the arrangement manner can control the forward rotation and the reverse rotation of the outdoor fan to achieve the purpose of preventing the outdoor heat exchanger from frosting and not affecting the indoor heating effect. In addition, although the present specification describes the top-discharge air conditioner outdoor unit, the present invention may also adopt other air conditioner outdoor units of other discharge methods, for example, a side-discharge air conditioner outdoor unit, as long as the installation method controls the forward rotation and the reverse rotation of the outdoor fan to achieve the purpose of preventing the outdoor heat exchanger from frosting and not affecting the indoor heating effect.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.
As shown in fig. 1 to 8, in order to solve the problem that the indoor experience is affected due to the fact that the conventional air conditioner cannot continuously generate heat in the defrosting mode, the outdoor unit of the present invention includes a heat exchanger 2 and an outdoor fan 1, as shown in fig. 1, the outdoor fan 1 includes a first fan 11 and a second fan 12, the heat exchanger 2 includes a first heat exchanger 21, a second heat exchanger 22 and a third heat exchanger 23, the first heat exchanger 21 encloses a first heat exchange channel 211, the second heat exchanger 22 encloses a second heat exchange channel 221, the first heat exchange channel 211 is communicated with the second heat exchange channel 221, the first fan 11 is disposed at a first end 2111 of the first heat exchange channel 211, the second fan 12 is disposed at a junction of the first heat exchange channel 211 and the second heat exchange channel 221, that is, a junction of a second end 2112 of the first heat exchange channel 211 and a first end 2211 of the second heat exchange channel 221, a second end 2212 of the second heat exchange channel 221 is an end 22121 far away from the first heat exchanger, the third heat exchanger 23 is enclosed outside the first heat exchanger 21. Preferably, the outdoor unit further includes a casing (not shown in the figure), the first heat exchanger 21, the second heat exchanger 22, the third heat exchanger 23, the first fan 11 and the second fan 12 are arranged inside the casing, the first heat exchanger 21 and the second heat exchanger 22 are arranged in an up-and-down overlapping manner, the third heat exchanger 23 surrounds the outside of the first heat exchanger 21 above, correspondingly, an air outlet (not shown in the figure) is arranged on the top surface of the casing, the air outlet is arranged corresponding to the first fan 11, an air inlet (not shown in the figure) is arranged on the bottom surface and/or side surface of the casing, preferably, the air inlet is arranged corresponding to the opening of the heat exchanger 2, as shown in fig. 2, and the direction of the arrow in the figure is the direction of the wind entering from the air inlet.
The setting mode has the advantages that: preferably, the outdoor unit of the air conditioner is set to be top-outlet air, the first heat exchange channel 211 and the second heat exchange channel 221 are set to be communicated, the first fan 11 is set at the first end 2111 of the first heat exchange channel 211, the second fan 12 is set at the junction of the second end 2112 of the first heat exchange channel 211 and the first end 2211 of the second heat exchange channel 221, the third heat exchanger 23 is enclosed outside the first heat exchanger 21, when the air conditioner is in the continuous heating mode, through the above-mentioned setting and controlling the first fan 11 and the second fan 12 to rotate reversely, the heat emitted by the third heat exchanger 23 is exchanged with the first heat exchanger 21, and the second fan 12 blows the air after heat exchange into the second heat exchange channel 221 to exchange heat with the second heat exchanger 22, at this time, the temperature of the air entering into the second heat exchange channel 221 is higher than the outdoor temperature, the above-mentioned setting can avoid the ambient air temperature after heat exchange by the second heat exchanger 22 from being too low to frost on the surface, the arrangement can realize indoor continuous heating, and meanwhile, the surface of the heat exchanger 2 does not frost.
In addition, the invention also provides an air conditioner which is provided with the air conditioner outdoor unit in any one of the above embodiments.
In addition, the present invention further provides a control method of an air conditioner, as shown in fig. 1, the air conditioner includes an air conditioner outdoor unit, the air conditioner outdoor unit includes a heat exchanger 2 and an outdoor fan 1, the outdoor fan 1 includes a first fan 11 and a second fan 12, the heat exchanger 2 includes a first heat exchanger 21, a second heat exchanger 22 and a third heat exchanger 23, the first heat exchanger 21 encloses a first heat exchange channel 211, the second heat exchanger 22 encloses a second heat exchange channel 221, the first heat exchange channel 211 is communicated with the second heat exchange channel 221, the first fan 11 is disposed at a first end of the first heat exchange channel 211, the second fan 12 is disposed at a junction of the first heat exchange channel 211 and the second heat exchange channel 221, the third heat exchanger 23 encloses an outer side of the first heat exchanger 21, as shown in fig. 3, 4 and 5, the following control method takes a top-outlet air conditioner outdoor unit as an example,
as shown in fig. 3 and 9, the first control method is that the air conditioner is in a continuous heating mode, and the control method includes:
step S1: acquiring an operation mode of an air conditioner;
step S21: when the air conditioner is in a continuous heating mode, controlling the third heat exchanger 23 to be a condenser, and controlling the first heat exchanger 21 and the second heat exchanger 22 to be evaporators;
step S31: the first fan 11 is controlled to rotate in reverse, and the second fan 12 is controlled to rotate in reverse.
Preferably, as shown in fig. 10, the step S31 "controlling the first fan 11 to rotate reversely, and controlling the second fan 12 to rotate reversely" further includes:
step S311: the speed of the first fan 11 is controlled to rotate reversely at V1, the speed of the second fan 12 is controlled to rotate reversely at V2, and V1 is controlled to < V2.
As shown in fig. 6, the operation principle of the air conditioner in the continuous heating mode is that when the air conditioner is in the continuous heating mode, the compressor 4 is controlled to start, the first four-way valve 62, the second four-way valve 63 are controlled to be connected as shown in the figure, at this time, high-pressure gas in the compressor 4 is high-pressure gas, the high-pressure gas in the compressor 4 firstly passes through the oil separator 5, then a part of the high-pressure gas passes through the third four-way valve 63 and then enters the room through the gas pipeline 10, after heat release in the room, the high-pressure gas is changed into liquid, the liquid passes through the liquid pipeline 101 and the cooler 9 and flows through a, the other part of the high-pressure gas from the compressor 4 passes through the third heat exchanger 23 and the third expansion valve 73 and flows through a through the second four-way valve 62, at this time, the high-pressure gas discharged from the two parts of the compressor 4 is heat exchange and then merged at a point, and passes through the first expansion valve 71 and the first heat exchanger 21, The second expansion valve 72 and the second heat exchanger 22 exchange heat with the outside, and then pass through the gas-liquid separator 8 via the first four-way valve 61, and finally return to the compressor 4.
The control can lead the temperature of the refrigerant flowing through the indoor from the compressor 4 to be increased after being merged with the refrigerant flowing through the third heat exchanger 23 from the compressor 4, thereby reducing the possibility of frosting on the surfaces of the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23, because the third heat exchanger 23 is equivalent to a condenser, the heat exchange between the third heat exchanger 23 and the outdoor is heat release, the hot air passing through the third heat exchanger 23 firstly exchanges heat with the first heat exchanger 21, then the second fan 12 reversely blows the wind after heat exchange downwards until exchanging heat with the second heat exchanger 22, the arrangement of the reverse rotation of the first fan 11 and the reverse rotation of the second fan 12 can lead the air after heat exchange to be discharged from the side edge of the second heat exchanger 22, thereby increasing the heat exchange effect, the heat exchange between the outdoor cold air and the first heat exchanger 21 is reduced by the low-speed reverse rotation of the first fan 11, thereby ensuring the heat exchange effect of the first heat exchanger 21, the second fan 12 rotates reversely at a high speed to bring the air exhausted after the heat exchange between the third heat exchanger 23 and the first heat exchanger 21 to the surface of the second heat exchanger 22 to exchange heat with the second heat exchanger 22 and is exhausted from the air inlet on the side edge of the second heat exchanger 22, the arrangement mode can improve the temperature of the air around the heat exchanger 2, and the frosting on the surface of the air due to the low surrounding temperature after the heat exchange of the heat exchanger 2 is prevented.
The second control method is that the air conditioner is in a normal heating mode, as shown in fig. 4 and 10, the control method includes:
step S22: when the air conditioner is in a normal heating mode, controlling the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 as evaporators;
step S32: the first fan 11 is controlled to rotate forward, and the second fan 12 is controlled to rotate forward.
Preferably, as shown in fig. 10, the step S32 "controlling the first fan 11 to rotate forward, and controlling the second fan 12 to rotate forward" further includes:
the speed of the first fan is controlled to be V3, the speed of the second fan is controlled to be V4, and V3 is controlled to be not less than V4.
As shown in fig. 7, the operation principle of the air conditioner in the conventional heating mode is as follows, when the air conditioner is in the conventional heating mode, the compressor 4 is controlled to start, the first four-way valve 61, the second four-way valve 62 and the third four-way valve 63 are controlled to be connected as shown in the figure, at this time, high-pressure gas is in the compressor 4, the high-pressure gas in the compressor 4 firstly passes through the oil separator 5, then passes through the third four-way valve 63, then enters the room through the gas pipeline 10, after releasing heat in the room, the high-pressure gas is changed into liquid, passes through the liquid pipeline 101 and the subcooler 9, flows through a, passes through the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23, exchanges heat with the outside, then passes through the first four-way valve 61 and the second four-way valve 62 together, and finally returns to the compressor 4 through the gas-liquid separator 8.
The speed of the second fan 12 is less than or equal to the speed of the first fan 11, which is favorable for the wind to be discharged from the top-side wind outlet, because the wind discharged from the first fan 11 includes the wind delivered by the second fan 12 to the first heat exchange channel 211 and the wind entering the first heat exchange channel 211 from the side wind inlet of the first heat exchanger 21, and in order to better discharge the wind, the speed V3 of the first fan 11 is greater than or equal to the speed V4 of the second fan 12. It should be noted that, although the name is a conventional heating mode, due to the linkage of the two fans, the overall air supply mode is still greatly different from the prior art, and the air supply mode can make the air path flow more smoothly and the heat exchange effect better on the basis of the structure of the invention, and the other modes mentioned below are the same.
The third control method is that the air conditioner is in a normal cooling mode, as shown in fig. 4 and 10, the control method includes:
step S23: when the air conditioner is in a normal refrigeration mode, controlling the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 to be condensers;
step S33: the first fan 11 is controlled to rotate forward, and the second fan 12 is controlled to rotate forward.
As shown in fig. 8, the operation principle of the air conditioner in the normal cooling mode is as follows, when the air conditioner is in the normal cooling mode, the compressor 4 is controlled to start, the first four-way valve 61, the second four-way valve 62 and the third four-way valve 63 are controlled to be connected as shown in the figure, at this time, high-pressure gas in the compressor 4 is high-pressure gas, the high-pressure gas in the compressor 4 firstly passes through the oil separator 5, then passes through the first four-way valve 61, the second four-way valve 62, then passes through the first heat exchanger 21, the first expansion valve 71, the second heat exchanger 22, the second expansion valve 72, the third heat exchanger 23 and the third expansion valve 73, then enters the liquid pipeline 101, passes through the liquid pipeline 101, then enters the indoor heat absorption into gas, and the gas passes through the gas pipeline 10 and the third four-way valve 63, then passes through the gas-liquid separator 8, and finally returns to the compressor 4.
As shown in fig. 3 and 10, the fourth control method is that the air conditioner is in a forced cooling mode, and includes:
step S24: when the air conditioner is in a forced cooling mode, controlling one or more of the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 to be a condenser;
step S34: the first fan 11 is controlled to rotate in reverse, and the second fan 12 is controlled to rotate in reverse.
As shown in fig. 10, the step S34 "controlling the first fan 11 to rotate reversely and controlling the second fan 12 to rotate reversely" further includes:
step S341: the speed of the first fan 11 is controlled to be V5, the speed of the second fan 12 is controlled to be V6, and V6 is controlled to be more than or equal to V5.
When the air conditioner is in the forced cooling mode, if the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 are all used as condensers, the operation principle is the same as that in the conventional cooling mode in the figure, and if only one or more of the heat exchangers 2 are controlled to be condensers, for example, only the third heat exchanger 23 is controlled to be a condenser, the first expansion valve 71 and the second expansion valve 72 are closed, the gas in the compressor 4 flows into the third heat exchanger 23 only through the second four-way valve 62 and enters the room for heat exchange, and the principle that the gas coming out of the room returns to the compressor 4 is the same as that in the conventional cooling mode.
The speed of the second fan 12 is greater than or equal to the speed of the first fan 11, which is favorable for the wind to be discharged from the second heat exchanger 22 side, because the wind discharged from the second fan 12 includes the wind transmitted from the first fan 11 to the second heat exchange channel 221, and also includes the wind from the side air inlet of the second heat exchanger 22 to the second heat exchange channel 221, for better discharging the wind, the speed V6 of the second fan 12 is greater than or equal to the speed V5 of the first fan 15, but when the speed of the first fan 11 and/or the second fan 12 is too low or the outdoor ambient temperature drops to zero, the first fan 11 and/or the second fan 12 will stop rotating.
A fifth control method is that the air conditioner is in a foreign matter cleaning mode, as shown in fig. 5 and 10, the control method includes:
step S23: when the air conditioner is in a foreign matter cleaning mode of the heat exchanger 2, the first fan 11 is controlled to rotate reversely, and the second fan 12 is controlled to rotate forwards.
The air conditioner regularly cleans the foreign matters in the outdoor unit heat exchanger 2, when the air conditioner automatically detects the time that the outdoor unit of the air conditioner needs to start the foreign matter cleaning mode, the outdoor unit heat exchanger 2 is forced to clean the foreign matters, the first fan 11 is controlled to rotate reversely, the second fan 12 rotates forwards, accordingly, large forced convection is generated, a turbulent flow effect is generated, dirt at each angle is blown better, and the foreign matter cleaning mode is automatically stopped after the air conditioner operates for a certain time.
In summary, in the continuous heating mode, the first heat exchanger 21 and the second heat exchanger 22 are controlled to be evaporators, the third heat exchanger 23 is controlled to be a condenser, heat exchange between the third heat exchanger 23 and the outdoor is exothermic, hot air passing through the third heat exchanger 23 exchanges heat with the first heat exchanger 21 first, then the hot air is blown to the second heat exchange channel 221 through the reverse rotation of the second fan 12 to exchange heat with the second heat exchanger 22, the hot air generated by the third heat exchanger 23 exchanges heat with the second heat exchanger 22 and then is discharged from the side of the second heat exchanger 22 through the reverse rotation of the second fan 12, and the heat exchange between outdoor cold air and the first heat exchanger 21 can be reduced through the low-speed reverse rotation of the first fan 11, so that the heat exchange effect between the first heat exchanger 21 and the second heat exchanger 22 is ensured.
It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can modify the above-mentioned structure so that the present invention can be applied to more specific application scenarios without departing from the principle of the present invention.
Although the description is made with reference to the U-shaped heat exchanger in fig. 2, the invention can also be applied to other heat exchangers having different structures, such as a notch shape or a butt joint where two U-shaped heat exchangers are not connected, as long as the heat exchanger has a certain opening and can exchange heat between the air in the heat exchanger and the outdoor air through the opening.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The outdoor unit of the air conditioner is characterized in that the outdoor unit of the air conditioner comprises a heat exchanger and an outdoor fan, the outdoor fan comprises a first fan and a second fan, the heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, a first heat exchange channel is defined by the first heat exchanger, a second heat exchange channel is defined by the second heat exchanger, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is arranged at the first end of the first heat exchange channel, the second fan is arranged at the joint of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is defined at the outer side of the first heat exchanger.
2. The outdoor unit of claim 1, further comprising a casing, wherein the first heat exchanger, the second heat exchanger, a third heat exchanger, the first fan and the second fan are disposed inside the casing, the first heat exchanger and the second heat exchanger are disposed in a stacked manner, the third heat exchanger surrounds the first heat exchanger above, an air outlet is disposed on a top surface of the casing, the air outlet corresponds to the first fan, and an air inlet is disposed on a bottom surface and/or a side surface of the casing.
3. The control method of the air conditioner is characterized in that the air conditioner comprises an air conditioner outdoor unit, the air conditioner outdoor unit comprises a heat exchanger and an outdoor fan, the outdoor fan comprises a first fan and a second fan, the heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, a first heat exchange channel is defined by the first heat exchanger, a second heat exchange channel is defined by the second heat exchanger, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is arranged at the first end of the first heat exchange channel, the second fan is arranged at the joint of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is defined at the outer side of the first heat exchanger;
the control method comprises the following steps:
acquiring an operation mode of the air conditioner;
when the air conditioner is in a continuous heating mode, controlling the third heat exchanger to be a condenser, and controlling the first heat exchanger and the second heat exchanger to be evaporators;
and controlling the first fan to rotate reversely and controlling the second fan to rotate reversely.
4. The method as claimed in claim 3, wherein the step of 'controlling the first fan to rotate reversely and the second fan to rotate reversely' further comprises:
the speed of reverse rotation of the first fan is controlled to be V1, the speed of reverse rotation of the second fan is controlled to be V2, and V1 is controlled to be < V2.
5. The control method of an air conditioner according to claim 3, characterized in that the control method further comprises:
when the air conditioner is in a normal heating mode, controlling the first heat exchanger, the second heat exchanger and the third heat exchanger to be evaporators;
and controlling the first fan to rotate forwards and controlling the second fan to rotate forwards.
6. The method as claimed in claim 5, wherein the step of controlling the first fan to rotate in forward and the second fan to rotate in forward further comprises:
the speed of the first fan is controlled to be V3, the speed of the second fan is controlled to be V4, and V3 is controlled to be not less than V4.
7. The control method of an air conditioner according to claim 3, further comprising:
when the air conditioner is in a normal refrigeration mode, controlling the first heat exchanger, the second heat exchanger and the third heat exchanger to be condensers;
and controlling the first fan to rotate forwards and controlling the second fan to rotate forwards.
8. The control method of an air conditioner according to claim 3, further comprising:
when the air conditioner is in a forced cooling mode, controlling one or more of the first heat exchanger, the second heat exchanger and the third heat exchanger to be a condenser;
and controlling the first fan to rotate reversely and controlling the second fan to rotate reversely.
9. The method as claimed in claim 8, wherein the step of controlling the first fan to be reversely rotated and the second fan to be reversely rotated further comprises:
the speed of the first fan is controlled to be V5, the speed of the second fan is controlled to be V6, and V6 is controlled to be not less than V5.
10. The control method of an air conditioner according to claim 3, further comprising:
when the air conditioner is in a heat exchanger foreign matter cleaning mode, the first fan is controlled to rotate reversely, and the second fan is controlled to rotate positively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210481888.XA CN114992799B (en) | 2022-05-05 | 2022-05-05 | Air conditioner outdoor unit and control method of air conditioner |
| PCT/CN2023/088950 WO2023213186A1 (en) | 2022-05-05 | 2023-04-18 | Air conditioner outdoor unit and control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210481888.XA CN114992799B (en) | 2022-05-05 | 2022-05-05 | Air conditioner outdoor unit and control method of air conditioner |
Publications (2)
| Publication Number | Publication Date |
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| CN114992799A true CN114992799A (en) | 2022-09-02 |
| CN114992799B CN114992799B (en) | 2024-06-07 |
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| CN202210481888.XA Active CN114992799B (en) | 2022-05-05 | 2022-05-05 | Air conditioner outdoor unit and control method of air conditioner |
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| CN (1) | CN114992799B (en) |
| WO (1) | WO2023213186A1 (en) |
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| WO2023213187A1 (en) * | 2022-05-05 | 2023-11-09 | 青岛海尔空调电子有限公司 | Air conditioner outdoor unit, air conditioner, and control method for air conditioner |
| WO2023213186A1 (en) * | 2022-05-05 | 2023-11-09 | 青岛海尔空调电子有限公司 | Air conditioner outdoor unit and control method for air conditioner |
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Also Published As
| Publication number | Publication date |
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| CN114992799B (en) | 2024-06-07 |
| WO2023213186A1 (en) | 2023-11-09 |
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