CN112880024A - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
CN112880024A
CN112880024A CN201911205200.XA CN201911205200A CN112880024A CN 112880024 A CN112880024 A CN 112880024A CN 201911205200 A CN201911205200 A CN 201911205200A CN 112880024 A CN112880024 A CN 112880024A
Authority
CN
China
Prior art keywords
air
air outlet
indoor unit
outlet
return opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911205200.XA
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Chinese (zh)
Inventor
朱训智
王元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioning Electric Co Ltd
Priority to CN201911205200.XA priority Critical patent/CN112880024A/en
Publication of CN112880024A publication Critical patent/CN112880024A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

The invention relates to the technical field of air conditioners, and particularly provides an air conditioner indoor unit, aiming at solving the problem that a large amount of condensation is easy to drop on a floor on an air deflector of the existing air conditioner indoor unit in a refrigeration mode. The air conditioner indoor unit comprises a shell, wherein a first air return opening and a first air outlet are formed in the shell, a first air duct communicated with the first air return opening and the first air outlet is formed in the shell, a second air return opening and a second air outlet are formed in the shell, a second air duct communicated with the second air return opening and the second air outlet is formed in the shell, the second air duct is communicated with the first air duct through the second air return opening, and an included angle is formed between the air outlet direction of the second air outlet and the air outlet direction of the first air duct at the communicated position. Through such setting, the air-out direction is adjusted to the air current production interference effect that blows in the second wind channel to first wind channel, has avoided producing the problem that the condensation drips on the floor on the aviation baffle under the refrigeration mode, has optimized user experience.

Description

Indoor unit of air conditioner
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides an indoor unit of an air conditioner.
Background
With the improvement of the level of people, the air conditioner is generally applied to the daily life of people. Most of air conditioners used in daily life are split type air conditioners including an outdoor unit and an indoor unit connected to each other. The air outlet of the indoor unit is provided with a swinging air deflector, and the blowing direction is changed by adjusting the angle of the air deflector in the operation process.
However, under the refrigeration condition, in the process that the low-temperature airflow is blown out from the air outlet, the temperature of the air deflector is reduced due to the influence of the low-temperature airflow, and a large amount of condensation is easy to drop on the floor on the air deflector, so that the use experience of a user is influenced.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, namely to solve the problem that a large amount of condensation is easy to drop on a floor on an air deflector of the existing indoor unit of the air conditioner in a refrigeration mode, the invention provides the indoor unit of the air conditioner, which comprises a shell, wherein a first air return opening and a first air outlet are arranged on the shell, a first air duct communicated with the first air return opening and the first air outlet is formed in the shell, a second air return opening and a second air outlet are arranged on the shell, a second air duct communicated with the second air return opening and the second air outlet is formed in the shell, the second air duct is communicated with the first air duct through the second air return opening, and an included angle is formed between the air outlet direction of the second air outlet and the air outlet direction of the first air duct at the communicated position.
In a preferred technical solution of the above air conditioning indoor unit, the second air outlet is disposed at a position on a side wall of the first air duct, the position being close to the first air outlet.
In the preferable technical scheme of the air-conditioning indoor unit, the second air outlet is communicated with the second air duct through the communicating section.
In the preferable technical scheme of the air conditioner indoor unit, the cross section area of the communication section along the air outlet direction is continuously reduced.
In the preferable technical scheme of the air-conditioning indoor unit, the air-conditioning indoor unit comprises a heat exchanger, and the heat exchanger is arranged in the first air duct.
In the preferable technical scheme of the indoor unit of the air conditioner, the air outlet area of the first air outlet is greater than or equal to the air outlet area of the second air outlet.
In a preferred technical solution of the above air conditioning indoor unit, the first air return opening is disposed at a top of the casing, and the first air outlet opening is disposed at a bottom of the casing.
In a preferable technical solution of the above air conditioning indoor unit, the second air return opening is provided in a side wall or a bottom of the casing.
In the preferable technical scheme of the indoor unit of the air conditioner, the second air return opening is formed in the bottom of the casing, and the first air outlet is formed around the second air return opening.
In the preferable technical scheme of the air-conditioning indoor unit, the number of the first air outlet and the second air outlet is multiple, the second air duct is internally provided with a corresponding number of centrifugal fans, and the air outlet of each centrifugal fan is communicated with the corresponding second air outlet.
As can be understood by those skilled in the art, in the technical solution of the present invention, the indoor unit of an air conditioner includes a casing, a first air return opening and a first air outlet are disposed on the casing, a first air duct communicating the first air return opening and the first air outlet is formed in the casing, a second air return opening and a second air outlet are disposed on the casing, a second air duct communicating the second air return opening and the second air outlet is formed in the casing, the second air duct is communicated with the first air duct through the second air return opening, and an included angle is formed between an air outlet direction at the second air outlet and an air outlet direction at a communication position of the first air duct. Through the arrangement, in the working process of the indoor unit of the air conditioner, the first air channel blows air outwards, the second air channel blows air into the first air channel, interference is generated on air flow in the first air channel, and the air outlet direction is changed. Need not to set up the aviation baffle at air outlet department, avoided producing the problem that the condensation drips on the floor under the refrigeration mode on the aviation baffle, optimized user experience. In addition, the air outlet direction is adjusted by the airflow blown to the first air outlet by the second air outlet, so that the larger resistance of the air deflector to the air outlet airflow is avoided, and the overall performance of the indoor unit is improved.
Preferably, the second air outlet is disposed at a position on the side wall of the first air duct, which is close to the first air outlet. Through such setting, the regulation dynamics to the air-out direction of first air outlet has been improved greatly.
Drawings
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings in conjunction with an indoor unit of a ceiling type air conditioner, in which:
fig. 1 is a half-sectional view illustrating an indoor unit of a ceiling type air conditioner according to a first embodiment of the present invention;
fig. 2 is an exploded view of an indoor unit of a ceiling type air conditioner in a half-sectional state according to a first embodiment of the present invention;
fig. 3 is a half sectional view showing an indoor unit of a ceiling type air conditioner according to a second embodiment of the present invention;
fig. 4 is an exploded view of an indoor unit of a ceiling type air conditioner according to a second embodiment of the present invention.
List of reference numerals:
1. a housing; 11. side coaming plates; 12. a top plate; 13. a base plate; 21. a first air return opening; 22. a first air outlet; 31. a second air return inlet; 32. a second air outlet; 33. a communicating section; 4. an annular heat exchanger; 5. a partition plate; 51. a water receiving tank; 6. a first centrifugal fan; 61. a wind scooper; 7. a second centrifugal fan; 71. and an air outlet of the fan.
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.
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", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships 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" and "second" 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," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication 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.
The invention provides an air-conditioning indoor unit, which comprises a shell, wherein a first air return opening and a first air outlet are arranged on the shell, a first air duct communicated with the first air return opening and the first air outlet is formed in the shell, a second air return opening and a second air outlet are arranged on the shell, a second air duct communicated with the second air return opening and the second air outlet is formed in the shell, the second air duct is communicated with the first air duct through the second air return opening, and an included angle is formed between the air outlet direction of the second air outlet and the air outlet direction of the first air duct at the communicated position. That is to say, in the operation process of the air conditioner, the indoor unit blows in airflow into the first air duct through the second air outlet of the indoor unit, and the airflow in the first air duct is disturbed, so that the air outlet direction of the first air outlet is changed. The air outlet direction is adjusted by the mode instead of the air guide plate, and the problem that a large amount of condensation drops on the floor under the refrigeration working condition is avoided. In addition, because the first air outlet is not provided with the air deflector, the resistance of the air flow in the air outlet process is reduced, the load of the fan is reduced, and the air outlet efficiency and the overall performance of the air conditioner are improved. In addition, the air outlet is not provided with the air deflector, noise possibly generated in the swing process of the air deflector is avoided, and the use experience of a user is optimized. Preferably, the second air outlet is disposed at a position on the side wall of the first air duct, which is close to the first air outlet. Through such setting, the regulation dynamics to the air-out direction of first air outlet has been improved greatly. It will be appreciated by those skilled in the art that the indoor unit of the air conditioner may be an indoor unit of a ceiling type air conditioner, an indoor unit of a wall type air conditioner, an indoor unit of a cabinet type air conditioner, etc.
The following is a detailed description of an indoor unit of a ceiling type air conditioner.
Referring to fig. 1 and 2, fig. 1 is a half-sectional view illustrating an indoor unit of a ceiling type air conditioner according to a first embodiment of the present invention; fig. 2 is an exploded view of an indoor unit of a ceiling type air conditioner according to a first embodiment of the present invention in a half-sectional state.
As shown in fig. 1 and 2, in a first embodiment, an indoor unit of a ceiling type air conditioner includes a casing 1, the casing 1 includes peripheral side panels 11, an upper top panel 12 and a lower bottom panel 13, and the side panels 11, the upper top panel 12 and the lower bottom panel 13 are assembled together to form the casing 1. A first air return opening 21 is arranged on the top plate 12, a second air return opening 31 is arranged in the middle area of the bottom plate 13, and 4 first air outlets 22 distributed around the second air return opening 31 are also arranged on the bottom plate 13. A horizontal partition plate 5 is arranged in the shell 1, and a water receiving groove 51 is formed around the partition plate 5. A first centrifugal fan 6 is arranged in the space above the partition plate 5, an annular heat exchanger 4 is arranged around the first centrifugal fan 6, and the bottom of the annular heat exchanger 4 is embedded into a water receiving tank 51. An air guide cover 61 is arranged between the first air return opening 21 and the air inlet of the first centrifugal fan 6, and the air guide cover 61 is in a conical shape with a large upper part and a small lower part. The first air return openings 21 are communicated with the 4 first air outlets 22 through first air ducts, and when the first centrifugal fan 6 is opened, air outside the casing 1 enters the first air ducts from the first air return openings 21, flows through the air guide cover 61, the first centrifugal fan 6 and the annular heat exchanger 4 in sequence and then is blown out from the first air outlets 22. The side wall of the first air duct is provided with 4 second air outlets 32 at positions close to the first air outlet 22, and the air outlet direction of the second air outlets 32 forms an included angle with the air outlet direction of the first air outlet 22. A second air duct communicating the second air return opening 31 and the second air outlet 32 is formed below the partition plate 5, a second centrifugal fan 7 is arranged in the second air duct, and the second centrifugal fan 7 is provided with 4 fan air outlets 71 at positions corresponding to the 4 second air outlets 32. The position that the below of water receiving tank 51 is close to first air outlet 22 is provided with 4 intercommunication sections 33, and 4 fan air outlets 71 communicate with 4 second air outlets 32 through intercommunication section 33 respectively.
During the operation of the indoor unit, the first centrifugal fan 6 and the second centrifugal fan 7 rotate. As shown by an arrow in fig. 1, under the action of the first centrifugal fan 6, air above the housing 1 enters the first air duct through the first air return opening 21, sequentially flows through the air guide cover 61, the first centrifugal fan 6 and the annular heat exchanger 4, and is blown out from the first air outlet 22; under the action of the second centrifugal fan 7, air below the casing 1 enters the second air duct through the second air return opening 31, flows through the second centrifugal fan 7 and then is blown out from the second air outlet 32, and the airflow blown out from the second air outlet 32 is obliquely blown towards the first air outlet 22, so that the air outlet direction of the first air outlet 22 is oblique towards the outer side of the side wall plate 11.
The wind scooper 61 is tapered with a large upper part and a small lower part, so that the airflow can smoothly flow from the first air return opening 21 to the first centrifugal fan 6, and the resistance of the airflow is reduced. It will be understood by those skilled in the art that the wind scooper 61 having a tapered shape with a large top and a small bottom is disposed between the first air return opening 21 and the wind inlet of the first centrifugal fan 6, which is only a preferred embodiment, and those skilled in the art can adjust the wind scooper as required to adapt to specific applications, for example, the wind scooper 61 may also be a channel with a constant cross-sectional area. Of course, the air guiding cover 61 may not be disposed between the first air return opening 21 and the air inlet of the first centrifugal fan 6, and the air inlet of the first centrifugal fan 6 is directly communicated with the first air return opening 21.
In the first embodiment, the heat exchanger is an annular heat exchanger 4, the annular heat exchanger 4 is arranged around the first centrifugal fan 6, and the thickness of the indoor unit is reduced through the arrangement, so that the indoor unit is more convenient to install. It is understood that this arrangement is only one specific embodiment, and those skilled in the art can modify it as required, for example, in a practical embodiment, the first centrifugal fan can be replaced by an axial flow fan, a heat exchanger is arranged below the axial flow fan, and the lower part of the heat exchanger is communicated to the first air outlet 22 through a channel.
The heat exchanger sets up in first wind channel, and the air current in the first wind channel carries out the heat exchange with the heat exchanger under the refrigeration operating mode and becomes the low temperature air current, and the conventional air current in the second wind channel flows through the air current of second air outlet 32 flow direction first air outlet 22, forms the air current mixture to it is low excessively and causes the user discomfort to have avoided the air current temperature that blows off, has improved user's comfort level. The second air outlet 32 is disposed at a position of the first air duct close to the first air outlet 22, so that the air outlet direction of the first air outlet 22 can be effectively changed, and the situation of directly blowing cold air to people is further avoided. It is understood that such an arrangement is a preferred embodiment, and as a possible embodiment, the first air return opening and the second air return opening are both arranged on the top plate, the partition plate arranged in the casing separates the first air duct from the second air duct, one part of the heat exchanger is arranged in the first air duct, the other part of the heat exchanger is arranged in the second air duct, the second air outlet is arranged in the first air duct at a position close to the first air outlet, and the first fan and the second fan are respectively arranged in the first air duct and the second air duct. Such setting can adjust the air-out direction of first air outlet equally, and the condition that the air-out temperature is low excessively can appear only.
The first air return opening 21 is arranged at the top of the shell 1, and the first air outlet opening 22 is arranged at the bottom of the shell, so that air short circuit in a heating mode is avoided.
In the above embodiments, the second air outlet 32 is disposed at a position of the first air duct close to the first air outlet 22, which is only a specific implementation manner, and a person skilled in the art may adjust the second air outlet 32 as needed, for example, in a possible implementation manner, the second air outlet 32 is disposed at a middle portion of the first air duct. In addition, the number of the first air outlet 22 and the second air outlet 32 is 4, which is only a specific implementation manner, and those skilled in the art can adjust the number as needed to adapt to different applications, for example, the number of the first air outlet 22 and the number of the second air outlet 32 may be 1, 2, 3, and the like. The second air return opening 31 is disposed at the bottom of the casing 1, and is only a specific embodiment, and those skilled in the art can adjust it as required, for example, the second air return opening 31 may be disposed at a side wall of the casing 1.
With continued reference to fig. 1, it is preferred that the cross-sectional area of the communicating section 33 along the wind outlet direction thereof is continuously reduced. Through the arrangement, under the action of the second centrifugal fan 7, in the process that the airflow in the second air duct flows through the communicating section 33 and is blown out from the second air outlet 32, the flow area of the airflow is continuously reduced, the flowing speed of the airflow is improved, and the capacity of changing the air outlet direction of the first air outlet 22 by the airflow blown out from the second air outlet 32 is further improved.
Preferably, the driving motor of the second centrifugal fan 7 is a stepless speed regulating motor. The flow velocity and flow rate of the air flow in the second channel can be changed by adjusting the rotation speed of the motor of the second centrifugal fan, so that the continuous adjustment of the air outlet angle of the first air outlet 22 is realized.
Referring to fig. 3 and 4, fig. 3 is a half sectional view of an indoor unit of a ceiling type air conditioner according to a second embodiment of the present invention; fig. 4 is an exploded view of an indoor unit of a ceiling type air conditioner according to a second embodiment of the present invention.
In a second specific embodiment, the indoor unit of a ceiling type air conditioner includes a casing 1, the casing 1 includes a surrounding side panel 11, an upper top panel 12 and a lower bottom panel 13, and the side panel 11, the upper top panel 12 and the lower bottom panel 13 are assembled together to form the casing 1. A first air return opening 21 is arranged on the top plate 12, a second air return opening 31 is arranged in the middle area of the bottom plate 13, and 4 first air outlets 22 distributed around the second air return opening 31 are also arranged on the bottom plate 13. A horizontal partition plate 5 is arranged in the shell 1, and a water receiving groove 51 is formed around the partition plate 5. A first centrifugal fan 6 is arranged in the space above the partition plate 5, an annular heat exchanger 4 is arranged around the first centrifugal fan 6, and the bottom of the annular heat exchanger 4 is embedded into a water receiving tank 51. An air guide cover 61 is arranged between the first air return opening 21 and the air inlet of the first centrifugal fan 6, and the air guide cover 61 is in a conical shape with a large upper part and a small lower part. The first air return openings 21 are communicated with the 4 first air outlets 22 through first air ducts, and when the first centrifugal fan 6 is opened, air outside the casing 1 enters the first air ducts from the first air return openings 21, flows through the air guide cover 61, the first centrifugal fan 6 and the annular heat exchanger 4 in sequence and then is blown out from the first air outlets 22. The side wall of the first air duct is provided with 4 second air outlets 32 at positions close to the first air outlet 22, and the air outlet direction of the second air outlets 32 forms an included angle with the air outlet direction of the first air outlet 21. A second air duct communicated with the second air return opening 31 and the second air outlet 32 is formed below the partition plate 5, and 4 second centrifugal fans 7 are arranged in the second air duct. The position that the below of water receiving tank 51 is close to first air outlet 22 is provided with 4 intercommunication sections 33, and the air outlet of 4 second centrifugal fan 7 communicates with 4 second air outlets 32 respectively.
In the working process of the indoor unit, the first centrifugal fan 6 rotates, and under the action of the first centrifugal fan 6, air above the casing 1 enters the first air duct through the first air return opening 21, sequentially flows through the air guide cover 61, the first centrifugal fan 6 and the annular heat exchanger 4, and then is blown out from the 4 first air outlets 22. By independently controlling the different second centrifugal fans 7, the air below the casing 1 enters the second air duct through the second air return opening 31, flows through the corresponding second centrifugal fans 7 and then is blown out from the corresponding second air outlets 32, and the airflow blown out from the second air outlets 32 is obliquely blown towards the first air outlets 22, so that the air outlet directions of the corresponding first air outlets 22 are oblique towards the outer sides of the side wall plates 11. Through such setting, can adjust alone the air-out direction of a plurality of first air outlets 22, further optimize user's suitable experience.
As can be seen from the above description, in the technical solution of the present invention, a first air duct communicating a first air return opening and a first air outlet and a second air duct communicating a second air return opening and a second air outlet are disposed in an indoor unit of an air conditioner, the second air duct is communicated with the first air duct through the second air return opening, an included angle is formed between an air outlet direction of the second air outlet and an air outlet direction of the first air duct at a communication position, and the second air duct blows air into the first air duct during operation of the indoor unit of the air conditioner, so as to generate an interference effect on an air flow in the first air duct, thereby changing the air outlet direction. Need not to set up the aviation baffle at air outlet department, avoided producing the problem that the condensation drips on the floor under the refrigeration mode on the aviation baffle, optimized user experience. In addition, the air outlet direction is adjusted by the airflow blown to the first air outlet by the second air outlet, so that the larger resistance of the air deflector to the air outlet airflow is avoided, and the overall performance of the indoor unit is improved. Preferably, the sidewall of the first air duct is close to the first air outlet. Through such setting, the regulation dynamics to the air-out direction of first air outlet has been improved greatly. The heat exchanger sets up in first wind channel, and the air current in the second wind channel mixes the back with the air current in the first wind channel, and the air current temperature who has avoided blowing to the user under the refrigeration operating mode is crossed lowly and is caused the user uncomfortable, has improved user's use and has experienced.
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. An indoor unit of an air conditioner is characterized by comprising a shell, wherein a first air return opening and a first air outlet are arranged on the shell, a first air duct communicated with the first air return opening and the first air outlet is formed in the shell,
the shell is provided with a second air return inlet and a second air outlet, a second air duct communicated with the second air return inlet and the second air outlet is formed in the shell,
the second air duct is communicated with the first air duct through the second air return opening, and an included angle is formed between the air outlet direction at the second air outlet and the air outlet direction at the communicated position of the first air duct.
2. An indoor unit of an air conditioner according to claim 1, wherein the second outlet is disposed at a position on a side wall of the first air duct, the position being close to the first outlet.
3. An indoor unit of an air conditioner according to claim 2, wherein the second air outlet is communicated with the second air duct through a communicating section.
4. An indoor unit of an air conditioner according to claim 3, wherein the cross-sectional area of the communicating section in the air outlet direction thereof is continuously reduced.
5. The indoor unit of any one of claims 1 to 4, wherein the indoor unit comprises a heat exchanger disposed in the first air duct.
6. An indoor unit of an air conditioner according to claim 5, wherein an air outlet area of the first outlet is equal to or larger than an air outlet area of the second outlet.
7. An indoor unit of an air conditioner according to claim 5, wherein the first air return opening is provided at a top of the casing, and the first air outlet opening is provided at a bottom of the casing.
8. An indoor unit of an air conditioner according to claim 7, wherein the second air return opening is provided in a side wall or a bottom of the casing.
9. An indoor unit of an air conditioner according to claim 8, wherein the second air return opening is provided at a bottom of the casing and the first air outlet is surrounded around the second air return opening.
10. An indoor unit of an air conditioner according to claim 9, wherein the number of the first air outlet and the second air outlet is plural, a corresponding number of centrifugal fans are arranged in the second air duct, and an air outlet of each centrifugal fan is communicated with a corresponding second air outlet.
CN201911205200.XA 2019-11-29 2019-11-29 Indoor unit of air conditioner Pending CN112880024A (en)

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Application Number Priority Date Filing Date Title
CN201911205200.XA CN112880024A (en) 2019-11-29 2019-11-29 Indoor unit of air conditioner

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Application Number Priority Date Filing Date Title
CN201911205200.XA CN112880024A (en) 2019-11-29 2019-11-29 Indoor unit of air conditioner

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Publication Number Publication Date
CN112880024A true CN112880024A (en) 2021-06-01

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CN201911205200.XA Pending CN112880024A (en) 2019-11-29 2019-11-29 Indoor unit of air conditioner

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183827A (en) * 2021-12-17 2022-03-15 珠海格力电器股份有限公司 Indoor unit air outlet control device and method and indoor unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183827A (en) * 2021-12-17 2022-03-15 珠海格力电器股份有限公司 Indoor unit air outlet control device and method and indoor unit
CN114183827B (en) * 2021-12-17 2022-12-16 珠海格力电器股份有限公司 Indoor unit air outlet control device and method and indoor unit

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