CN114992799B - 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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- CN114992799B CN114992799B CN202210481888.XA CN202210481888A CN114992799B CN 114992799 B CN114992799 B CN 114992799B CN 202210481888 A CN202210481888 A CN 202210481888A CN 114992799 B CN114992799 B CN 114992799B
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- 238000000034 method Methods 0.000 title claims description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000010257 thawing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
- F24F11/89—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
-
- 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 defrosting mode aims to solve the problem that indoor experience is affected because the existing air conditioner cannot continuously heat in the defrosting mode. The air conditioner outdoor unit 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, 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 junction of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is surrounded by the outer side of the first heat exchanger. 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 the living standard of people, the demands of people on indoor environment comfort level are also higher and higher, so that the effect of the air conditioning unit in daily life is indispensable. 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, wherein 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 achieve a comfortable indoor temperature. However, in some cases, the configuration and the usage of the air conditioning unit may not fully satisfy the requirements of the user due to the influence of the outdoor environment. For example, in an air conditioner heating mode, the heat exchanger of the outdoor unit is in a low temperature state, the outdoor heat exchanger is easy to generate surface frosting at a continuous low temperature, the surface frosting of the heat exchanger of the outdoor unit is easy to influence the heat exchange efficiency, and the existing air conditioner is used for defrosting the heat exchanger of the outdoor unit in a defrosting mode, but the indoor can not be continuously heated in the defrosting mode, and at the moment, the experience of a user 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 problems, namely the problem that the indoor experience is affected because the existing air conditioner cannot continuously heat in a defrosting mode.
In a first aspect, the invention provides an outdoor unit of an air conditioner, which comprises a heat exchanger and an outdoor fan, wherein 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 surrounded by the first heat exchanger, a second heat exchange channel is surrounded by the second heat exchanger, the first heat exchange channel is communicated with the second heat exchange channel, the first fan is arranged at a 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 outside the first heat exchanger.
In the preferred technical scheme of the air conditioner outdoor unit, the outdoor unit further comprises a shell, the first heat exchanger, the second heat exchanger, the third heat exchanger, the first fan and the second fan are arranged inside the shell, the first heat exchanger and the second heat exchanger are arranged in an up-down superposition mode, the third heat exchanger is arranged on the outer side of the first heat exchanger in an encircling mode, an air outlet is correspondingly formed in the top surface of the shell, the air outlet is correspondingly arranged with the first fan, and an air inlet is formed in the bottom surface and/or the side surface of the shell.
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 by 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, the third heat exchanger is controlled to be a condenser, and the first heat exchanger and the second heat exchanger are controlled 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 air conditioner control method, the step of controlling the first fan to reverse and controlling the second fan to reverse further includes:
Controlling the reverse speed of the first fan to be V1, controlling the reverse speed of the second fan to be V2, and controlling V1 to be less than V2.
In a preferred technical solution of the above air conditioner control method, the control method further includes:
When the air conditioner is in a conventional 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 positively, and controlling the second fan to rotate positively.
In a preferred embodiment of the above air conditioner control method, the step of "controlling the first fan to rotate forward" further includes:
And controlling the forward rotation speed of the first fan to be V3, controlling the forward rotation speed of the second fan to be V4, and controlling V3 to be more than or equal to V4.
In a preferred technical solution of the above air conditioner control method, the control method further includes:
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.
In a preferred technical solution of the above air conditioner control method, 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 positively, and controlling the second fan to rotate positively.
In a preferred technical solution of the above air conditioner control method, the control method further includes:
When the air conditioner is in a forced refrigeration 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 reversely rotate, and controlling the second fan to reversely rotate.
In a preferred embodiment of the above air conditioner control method, the step of controlling the first fan to reverse and controlling the second fan to reverse further includes:
Controlling the reverse rotation speed of the first fan to be V5, controlling the reverse rotation speed of the second fan to be V6, and controlling V5 to be less than or equal to V6.
It can be understood by those skilled in the art that the outdoor unit of the air conditioner in the technical scheme of the invention comprises a heat exchanger and an outdoor fan, wherein 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 junction of the first heat exchange channel and the second heat exchange channel, and the third heat exchanger is surrounded on the outer side of the first heat exchanger. When the air conditioner is in the 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.
Under the condition of adopting the technical scheme, the invention provides a specific structural scheme capable of realizing a continuous heating mode, and the specific continuous heating mode scheme is as follows: the third heat exchanger is controlled to release heat outdoors, 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 heat exchanger is blown out from the outside to the inside, heat exchange between the third heat exchanger and the first heat exchanger is firstly carried out, warm air which exchanges heat with the first heat exchanger is blown into 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 inversion of the first fan can prevent the warm air from directly radiating out from the top, the first heat exchanger is fully ensured to absorb enough heat to avoid frosting, the inversion of the second fan prevents the warm air from radiating out from the side of the first heat exchanger, the second heat exchanger is fully ensured to absorb enough heat to avoid frosting, the whole heat radiation is controlled to be at an excellent level, and the heat radiating out from the third heat exchanger is mostly absorbed by the first heat exchanger and the second heat exchanger, so that 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 an air heat exchange direction of an outdoor fan of the air conditioner outdoor unit according to the present invention in a continuous heating and forced cooling mode;
fig. 4 is a schematic view illustrating an air heat exchange direction of an outdoor fan of the air conditioner outdoor unit according to the present invention in a conventional heating and cooling mode;
fig. 5 is a schematic view illustrating a foreign matter discharge direction of the outdoor unit of the air conditioner in a foreign matter cleaning mode according to the present invention;
fig. 6 is a system diagram of an air conditioner outdoor unit according to the present invention operating in a continuous heating mode;
fig. 7 is a system diagram of an air conditioner outdoor unit according to the present invention operating in a conventional heating mode;
fig. 8 is a system diagram of an air conditioner outdoor unit according to the present invention operating in a normal cooling mode;
fig. 9 is a schematic diagram of 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 of a control method of the outdoor unit of the present invention in other modes.
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 the 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 the second heat exchange passage; 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 merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application. For example, although the description is made in terms of arranging the first heat exchanger and the second heat exchanger one above the other, it is obvious that other arrangements may be adopted in the present invention, for example, arranging the first heat exchanger and the second heat exchanger one after the other, so long as the arrangement has the effect of preventing frosting of the outdoor heat exchanger and not affecting indoor heating effect when controlling forward rotation and reverse rotation of the outdoor fan. In addition, although the air-conditioning outdoor unit with the top outlet is described in the present specification, the present invention may also be applied to other air-conditioning outdoor units with an outlet, for example, an air-conditioning outdoor unit with a side outlet, as long as the arrangement mode has the effect of controlling the forward rotation and the reverse rotation of the outdoor fan so as to prevent frosting of the outdoor heat exchanger without affecting the indoor heating effect.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "front," "rear," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1-8, in order to solve the problem that the indoor experience is affected because the existing air conditioner cannot continuously heat in the defrosting mode, the outdoor unit of the air conditioner according to 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 disposed in communication 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, the second end 2212 of the second heat exchange channel 221 is an end far from the first heat exchanger 21, and the third heat exchanger 23 is disposed outside the first heat exchanger 21. Preferably, the outdoor unit further includes a casing (not shown in the drawing), 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 disposed inside the casing, the first heat exchanger 21 and the second heat exchanger 22 are disposed in a vertically overlapped manner, the third heat exchanger 23 surrounds the outside of the first heat exchanger 21 above, an air outlet (not shown in the drawing) is correspondingly disposed on the top surface of the casing, the air outlet is disposed corresponding to the first fan 11, an air inlet (not shown in the drawing) is disposed on the bottom surface and/or the side surface of the casing, preferably, the air inlet is disposed corresponding to the opening of the heat exchanger 2, as shown in fig. 2, the arrow direction in the drawing is the direction of the air entering from the air inlet.
The above arrangement has the advantages that: preferably, the outdoor unit of the air conditioner is set as an top outlet, the first heat exchange channel 211 is communicated with the second heat exchange channel 221, the first fan 11 is arranged at the first end 2111 of the first heat exchange channel 211, the second fan 12 is arranged 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 arranged on the outer side of the first heat exchanger 21 in a surrounding mode, when the air conditioner is in a continuous heating mode, the heat emitted by the third heat exchanger 23 is exchanged with the first heat exchanger 21 by controlling the first fan 11 and the second fan 12 to be reversed, and the air after heat exchange is blown into the second heat exchange channel 221 by the second fan 12 to exchange heat with the second heat exchanger 22, at the moment, the temperature of the air entering the second heat exchange channel 221 is higher than the outdoor temperature, the arrangement can avoid that the temperature of the surrounding air after heat exchange of the second heat exchanger 22 is too low to frost on the surface of the second heat exchanger 22, and the arrangement can realize indoor continuous heating without frosting.
In addition, the invention also provides an air conditioner, which is provided with the air conditioner outdoor unit in any embodiment.
In addition, the invention also provides a control method of the air conditioner, as shown in fig. 1, the air conditioner comprises an air conditioner outdoor unit, the air conditioner outdoor unit comprises a heat exchanger 2 and an outdoor fan 1, the outdoor fan 1 comprises a first fan 11 and a second fan 12, the heat exchanger 2 comprises a first heat exchanger 21, a second heat exchanger 22 and a third heat exchanger 23, the first heat exchanger 21 surrounds a first heat exchange channel 211, the second heat exchanger 22 surrounds 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 arranged at a first end of the first heat exchange channel 211, the second fan 12 is arranged at the joint of the first heat exchange channel 211 and the second heat exchange channel 221, the third heat exchanger 23 surrounds the outer side of the first heat exchanger 21, as shown in fig. 3, 4 and 5, the following control method takes an ejector type air conditioner outdoor unit as an example,
The first control method is that the air conditioner is in a continuous heating mode, as shown in fig. 3 and 9, and the control method includes:
step S1: acquiring an operation mode of an air conditioner;
Step S21: when the air conditioner is in the continuous heating mode, the third heat exchanger 23 is controlled to be a condenser, and the first heat exchanger 21 and the second heat exchanger 22 are controlled to be evaporators;
step S31: the first fan 11 is controlled to be reversed and the second fan 12 is controlled to be reversed.
Preferably, as shown in fig. 10, the step S31 "controlling the first fan 11 to be reversed" controlling the second fan 12 to be reversed "further includes:
Step S311: the reverse speed of the first fan 11 is controlled to be V1, the reverse speed of the second fan 12 is controlled to be V2, and V1< V2 is controlled.
As shown in fig. 6, the operation principle of the air conditioner in the continuous heating mode is as follows, when the air conditioner is in the continuous heating mode, the compressor 4 is controlled to be started, the first four-way valve, the second four-way valve 62 and the third four-way valve 63 are controlled to be connected at positions shown in the figure, at this time, high-pressure gas in the compressor 4 is first passed through the oil separator 5, then 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 is carried out in the room, the high-pressure gas becomes liquid and flows through the liquid pipeline 101 and the subcooler 9, the other part of the high-pressure gas from the compressor 4 passes through the second four-way valve 62 and then flows through the third heat exchanger 23 and the third expansion valve 73 and then flows through the A, at this time, the high-pressure gas discharged by the two parts of the compressor 4 is converged at the point A after heat exchange, and then flows through the first expansion valve 71 and the first heat exchanger 21, the second expansion valve 72 and the second heat exchanger 22 and the outdoor after heat exchange, and then flows through the first valve 61 and then flows back to the compressor 4 finally.
The above control can make the temperature of the refrigerant flowing through the indoor from the compressor 4 rise after merging 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, at this time, the heat exchange between the third heat exchanger 23 and the outdoor is exothermic, the hot air passing through the third heat exchanger 23 exchanges heat with the first heat exchanger 21 first, then the air direction after the heat exchange is blown downwards by the second fan 12 until the air exchanges heat with the second heat exchanger 22, the arrangement of the first fan 11 is reversed, the second fan 12 is reversed, the air after the heat exchange can be discharged from the side edge of the second heat exchanger 22, the heat exchange effect is increased, the heat exchange effect of the outdoor cold air and the first heat exchanger 21 is reduced by the low-speed reversal of the first fan 11, the heat exchange effect of the first heat exchanger 21 is ensured, the air discharged after the heat exchange between the third heat exchanger 23 and the first heat exchanger 21 is carried to the surface of the second heat exchanger 22 and the second heat exchanger 22 by the high-speed reversal of the second fan 12, and the air can be discharged from the side edge of the second heat exchanger 22 by the second fan 12, and the air can be prevented from being frosted at the side edge of the air exchange surface after the air exchange is arranged at the side of the second heat exchanger 2.
The second control method is that the air conditioner is in a conventional heating mode, as shown in fig. 4 and 10, and the control method includes:
Step S22: when the air conditioner is in the conventional heating mode, the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 are controlled to be 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 of "controlling the first fan 11 to rotate forward" controlling the second fan 12 to rotate forward "further includes:
The forward rotation speed of the first fan is controlled to be V3, the forward rotation speed of the second fan is controlled to be V4, and V3 is controlled to be more than or equal to V4.
As shown in fig. 7, the working 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 be started, 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 passes through the oil separator 5, then passes through the third four-way valve 63 and then enters the room through the gas pipeline 10, after heat release is carried out in the room, the high-pressure gas becomes liquid, flows through the liquid pipeline 101 and the subcooler 9 to flow through the a, then flows through the first four-way valve 61 and the second four-way valve 62 together with the gas-liquid separator 8 after heat exchange is carried out outside, and finally returns to the compressor 4.
The speed of the second fan 12 being less than or equal to the speed of the first fan 11 is advantageous for expelling wind from the top side air outlet, because the wind expelled from the first fan 11 comprises the wind delivered by the second fan 12 to the first heat exchanging channel 211, and also comprises the wind entering the first heat exchanging channel 211 at the side air inlet of the first heat exchanger 21, and in order to better expel the wind, the speed V3 of the first fan 11 is equal to or higher than the speed V4 of the second fan 12. It should be noted that although the name is a conventional heating mode, the overall air supply mode is greatly different from the prior art due to the linkage of the two fans, and the air supply mode can enable the air flow to be smoother on the basis of the structure of the invention, the heat exchange effect is better, and other modes mentioned below are similar.
The third control method is that the air conditioner is in a normal refrigeration mode, as shown in fig. 4 and 10, and the control method includes:
Step S23: when the air conditioner is in the normal refrigeration mode, the first heat exchanger 21, the second heat exchanger 22 and the third heat exchanger 23 are controlled 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 working 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 be started, 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 passes through the oil separator 5, then passes through the first four-way valve 61 and the second four-way valve 62, then passes through the first heat exchanger 21 and the first expansion valve 71, the second heat exchanger 22 and the second expansion valve 72, the third heat exchanger 23 and the third expansion valve 73, then enters the liquid pipeline 101, then enters the indoor heat absorption chamber to be changed 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.
The fourth control method is that the air conditioner is in a forced cooling mode, as shown in fig. 3 and 10, and the control method includes:
Step S24: when the air conditioner is in the forced refrigeration 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 be reversed and the second fan 12 is controlled to be reversed.
As shown in fig. 10, step S34 "controlling the first fan 11 to be reversed, and controlling the second fan 12 to be reversed" further includes:
step S341: the reverse speed of the first fan 11 is controlled to be V5, the reverse speed of the second fan 12 is controlled to be V6, and V5 is controlled to be less than or equal to V6.
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 working principle is the same as that of the conventional cooling mode in the drawing, if only one or more of the heat exchangers 2 is controlled to be condensers, for example, only the third heat exchanger 23 is controlled to be condensers, 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 indoor heat exchange, and the principle that the gas coming out from the indoor returns to the compressor 4 is the same as that of the conventional cooling mode.
The speed of the second fan 12 being greater than or equal to the speed of the first fan 11 is advantageous for the air to be discharged from the side of the second heat exchanger 22, because the air discharged from the second fan 12 includes the air supplied from the first fan 11 to the second heat exchanging channel 221, and also includes the air introduced into the second heat exchanging channel 221 from the side air inlet of the second heat exchanger 22, and in order to better discharge the air, the speed V6 of the second fan 12 is equal to or greater than 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 also stops rotating.
The fifth control method is that the air conditioner is in a foreign matter cleaning mode, as shown in fig. 5 and 10, and the control method includes:
Step S23: when the air conditioner is in the 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 forwardly.
The air conditioner regularly carries out the foreign matter clearance of off-premises station heat exchanger 2, and when the air conditioner automated inspection air conditioner off-premises station need open the time of foreign matter clearance mode, forced outdoor heat exchanger 2 carries out the foreign matter clearance, controls first fan 11 reversal, and second fan 12 corotation to produce great forced convection, and then produce turbulent effect, better blowing each angle's dirt, after the operation for a period of time, the automatic shutdown foreign matter clearance mode.
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 a condenser, the third heat exchanger 23 exchanges heat with the outdoor air to generate heat, the hot air passing through the third heat exchanger 23 exchanges heat with the first heat exchanger 21, and then the hot air is blown to the second heat exchange channel 221 to exchange heat with the second heat exchanger 22 through the inversion of the second fan 12, the arrangement of the inversion of the second fan 12 can enable the hot air generated by the third heat exchanger 23 to exchange heat with the second heat exchanger 22 and then be discharged from the side edge of the second heat exchanger 22, and the heat exchange between the outdoor cold air and the first heat exchanger 21 can be reduced through the low-speed inversion of the first fan 11, so that the heat exchange effect of the first heat exchanger 21 and the second heat exchanger 22 is ensured.
It should be noted that the above-mentioned embodiments are merely for illustrating the principles of the present invention, and are not intended to limit the scope of the invention, and those skilled in the art can modify the above-mentioned structure to apply the present invention to more specific application scenarios without departing from the principles of the present invention.
Although the description is made with respect to the U-shaped heat exchanger of fig. 2, the present invention may also employ other heat exchangers, such as a notch shape or a butt joint form where two U-shaped heat exchangers are not connected, so long as the heat exchanger has a certain opening and can exchange heat between air in the heat exchanger and outdoor air through the opening.
Thus far, the technical solution of the present invention has 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 protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (9)
1. An air conditioner outdoor unit is characterized by comprising a heat exchanger and an outdoor fan, wherein 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, the third heat exchanger is surrounded by the outer side of the first heat exchanger,
The outdoor unit further comprises a shell, the first heat exchanger, the second heat exchanger, the third heat exchanger, the first fan and the second fan are arranged inside the shell, the first heat exchanger and the second heat exchanger are arranged in an up-down superposition mode, the third heat exchanger is arranged on the outer side of the first heat exchanger in an encircling mode, an air outlet is correspondingly formed in the top surface of the shell, the air outlet is arranged corresponding to the first fan, and an air inlet is formed in the bottom surface and/or the side surface of the shell;
The first fan and the second fan can both rotate forward and backward, in a continuous heating mode of the air conditioner, in a refrigerant circulation loop of the air conditioner, the first heat exchanger and the second heat exchanger are connected in parallel and then connected with the third heat exchanger in series, a first part of refrigerant in the refrigerant circulation loop flows through indoor heat exchange, a second part of refrigerant flows through the third heat exchanger, and then the first part of refrigerant and the second part of refrigerant are converged and then respectively flow through the first heat exchanger and the second heat exchanger.
2. A control method of an air conditioner, wherein the air conditioner includes the air conditioner outdoor unit according to claim 1, the control method comprising:
acquiring an operation mode of the air conditioner;
when the air conditioner is in a continuous heating mode, the third heat exchanger is controlled to be a condenser, and the first heat exchanger and the second heat exchanger are controlled to be evaporators;
and controlling the first fan to rotate reversely, and controlling the second fan to rotate reversely.
3. The method of controlling an air conditioner according to claim 2, wherein the step of controlling the first fan to be reversed and controlling the second fan to be reversed further comprises:
Controlling the reverse speed of the first fan to be V1, controlling the reverse speed of the second fan to be V2, and controlling V1 to be less than V2.
4. The control method of an air conditioner according to claim 2, wherein the control method further comprises:
When the air conditioner is in a conventional 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 positively, and controlling the second fan to rotate positively.
5. The method of controlling an air conditioner as claimed in claim 4, wherein the step of controlling the first fan to rotate forward and controlling the second fan to rotate forward further comprises:
And controlling the forward rotation speed of the first fan to be V3, controlling the forward rotation speed of the second fan to be V4, and controlling V3 to be more than or equal to V4.
6. The control method of an air conditioner according to claim 2, wherein the control method further comprises:
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 positively, and controlling the second fan to rotate positively.
7. The control method of an air conditioner according to claim 2, wherein the control method further comprises:
When the air conditioner is in a forced refrigeration 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.
8. The method of controlling an air conditioner as claimed in claim 7, wherein the step of controlling the first fan to be reversed and controlling the second fan to be reversed further comprises:
Controlling the reverse rotation speed of the first fan to be V5, controlling the reverse rotation speed of the second fan to be V6, and controlling V5 to be less than or equal to V6.
9. The control method of an air conditioner according to claim 2, wherein the control method further comprises:
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 CN114992799A (en) | 2022-09-02 |
| CN114992799B true CN114992799B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| Country | Link |
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| CN (1) | CN114992799B (en) |
| WO (1) | WO2023213186A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992799B (en) * | 2022-05-05 | 2024-06-07 | 青岛海尔空调电子有限公司 | Air conditioner outdoor unit and control method of air conditioner |
| CN117053296A (en) * | 2022-05-05 | 2023-11-14 | 青岛海尔空调电子有限公司 | Air conditioner outdoor unit, air conditioner and control method of air conditioner |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114992799A (en) | 2022-09-02 |
| WO2023213186A1 (en) | 2023-11-09 |
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