CN111678200A - Indoor unit with condensation preventing function, air conditioner and control method of indoor unit - Google Patents

Indoor unit with condensation preventing function, air conditioner and control method of indoor unit Download PDF

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Publication number
CN111678200A
CN111678200A CN202010513935.5A CN202010513935A CN111678200A CN 111678200 A CN111678200 A CN 111678200A CN 202010513935 A CN202010513935 A CN 202010513935A CN 111678200 A CN111678200 A CN 111678200A
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CN
China
Prior art keywords
wind shield
indoor unit
wind
heat exchanger
heat exchanging
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Pending
Application number
CN202010513935.5A
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Chinese (zh)
Inventor
李家旭
刘为爽
李志强
李健成
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202010513935.5A priority Critical patent/CN111678200A/en
Publication of CN111678200A publication Critical patent/CN111678200A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • 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
    • F24F13/222—Means for preventing condensation or evacuating condensate for 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
    • F24F13/30—Arrangement or mounting of 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
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

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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)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention provides an indoor unit with an anti-condensation function, an air conditioner and a control method of the indoor unit. The indoor unit comprises a shell and a heat exchanger, wherein an airflow channel is formed in the shell, the heat exchanger is arranged in the airflow channel, and the indoor unit further comprises a wind shield which is arranged on the windward side of the heat exchanger. According to the indoor unit with the condensation preventing function, the air conditioner and the control method of the indoor unit, the wind shield is arranged on the windward side to guide airflow entering the heat exchanger, the airflow is guided to the part with larger resistance to compensate the part with small air volume, so that an air field in the shell is uniform, the temperature difference of all outlet air temperatures of the heat exchanger is small to prevent condensation, and meanwhile, the first included angle formed by the wind shield and the windward side is adjustable, so that automatic adjustment is realized according to different air field conditions, the air volume of the indoor unit of the air conditioner is not influenced as much as possible, and the performance of the air conditioner is ensured.

Description

Indoor unit with condensation preventing function, air conditioner and control method of indoor unit
Technical Field
The invention relates to the technical field of air treatment equipment, in particular to an indoor unit with an anti-condensation function, an air conditioner and a control method of the indoor unit.
Background
The condensation problem generally exists in the existing air pipe type air conditioner indoor unit, although the air outlet temperature can be enabled to be uniform to a certain extent through the shunt design of the evaporator, so as to reduce the generation of condensation, the problem is far from insufficient, particularly, the structure of the heat exchanger of the air suction type air conditioner is V-shaped, the resistance of the middle part is large, the air quantity of the middle part of the heat exchanger is smaller than that of the upper part and the lower part, the air fields of the upper part, the middle part and the lower part of the evaporator are uneven, the temperature difference exists between the upper part and the lower part and the middle part of the air flow after the heat exchange with the evaporator, and the condensation phenomenon is generated due to the uneven air outlet temperature of.
Disclosure of Invention
In order to solve the technical problem of condensation caused by uneven wind field of the existing indoor unit, the indoor unit with the condensation preventing function, the air conditioner and the control method of the indoor unit are provided, wherein the air flow is guided by the wind shield to be uniform in the wind field.
The utility model provides an indoor unit, includes casing and heat exchanger, the casing is inside to be formed with airflow channel, the heat exchanger set up in the airflow channel, indoor unit still includes the deep bead, the deep bead set up in on the windward side of heat exchanger, the deep bead with first contained angle has between the windward side, just the deep bead is kept away from the heat exchanger the border with be formed with the air passing channel between the corresponding internal surface of casing.
The first included angle is in an angle range of 0-180 degrees.
The wind shield is provided with a first working position, and when the wind shield is positioned at the first working position, the wind shield is parallel to the direction of the air flow in the air flow channel.
The windward side is divided into a front part, a middle part and a rear part along the airflow direction in the airflow channel, the wind shield is arranged in the middle part, and the wind shield can rotate towards the front part or the rear part.
The heat exchanger comprises a sealing plate, and the wind shield is rotatably arranged on the sealing plate.
The indoor unit further comprises a driving piece, the driving piece is arranged on the shell, the wind shield is arranged on the driving piece, and the driving piece drives the wind shield to adjust the angle of the first included angle.
The indoor unit further comprises a plurality of temperature sensing mechanisms, all the temperature sensing mechanisms are distributed on the leeward side of the heat exchanger, part of the temperature sensing mechanisms detect the air outlet temperature of the heat exchanger corresponding to one side of the wind shield, the rest of the temperature sensing mechanisms detect the air outlet temperature of the heat exchanger corresponding to the other side of the wind shield, and all the temperature sensing mechanisms are electrically connected with the driving piece.
A plurality of vent holes are uniformly distributed on the wind shield.
The diameter range of the vent hole is 12mm-18 mm.
All the ventilation holes are distributed in at least two rows, and the ratio of the pitch between every two adjacent ventilation holes to the diameter of each ventilation hole is 3: 1-1.5: 1.
The distance between the wind shield and the windward side ranges from 5mm to 10 mm.
The width range of the air passing channel is 5mm-15 mm.
The heat exchanger comprises at least two sections of heat exchanging parts, a second included angle is formed between every two adjacent heat exchanging parts, and the wind shield is arranged on at least one section of the heat exchanging part.
The cross section of the heat exchanger is V-shaped, the air flow channel is provided with an air return opening on the shell, and the vertex of the V-shape points to the air return opening.
The heat exchanger comprises a first heat exchanging portion and a second heat exchanging portion, the joint of the first heat exchanging portion and the second heat exchanging portion forms the vertex of the V shape, the wind shield comprises a first wind shield and a second wind shield, the first wind shield is arranged on the windward side of the first heat exchanging portion, and the second wind shield is arranged on the windward side of the second heat exchanging portion.
The indoor unit further comprises a water receiving tray, the first heat exchange portion is located above the second heat exchange portion, the water receiving tray is located below the second heat exchange portion, the wind blocking plate on the second heat exchange portion is arranged below the heat exchanger, and the width of the air passing channel formed by the first wind blocking plate is smaller than that of the air passing channel formed by the second wind blocking plate.
The indoor unit further comprises three temperature sensing mechanisms, the three temperature sensing mechanisms are arranged on the leeward side of the heat exchanger, one temperature sensing mechanism is arranged at one end of the V shape, the other temperature sensing mechanism is arranged at the other end of the V shape, and the rest temperature sensing mechanisms are arranged at the vertex of the V shape.
The material of the wind shield comprises one or more of sheet metal, alloy, rubber or plastic.
The control method of the indoor unit comprises a driving part arranged on the shell, a wind shield arranged on the driving part, and a plurality of temperature sensing mechanisms, wherein the driving part drives the wind shield to adjust the angle of the first included angle, the indoor unit further comprises the temperature sensing mechanisms, all the temperature sensing mechanisms are distributed on two sides of the wind shield, and are electrically connected with the driving part, and the control method comprises the following steps:
step S1, setting a minimum temperature difference value t;
s2, acquiring the air outlet temperature T1 of the heat exchanger on the first side of the wind shield and the air outlet temperature T2 of the second side of the wind shield, and comparing | T1-T2| and T;
step S3, if the | T1-T2| is more than or equal to T, adjusting the angle of the first included angle;
if the | T1-T2| is less than T, the angle of the first included angle is kept unchanged.
The indoor unit has a cooling mode:
in the cooling mode:
if T1-T2 is more than or equal to T, the wind shield rotates to the first side;
if T2-T1 is larger than or equal to T, the wind shield rotates towards the second side.
The wind shield is provided with a first working position, when the wind shield is positioned at the first working position, the wind shield is parallel to the direction of air flow in the air flow channel, and the indoor unit is provided with a heating mode:
in the heating mode, the windshield is switched to the first operating position.
Step S3 further includes:
after the wind shield rotates for a set angle every time, comparing the | T1-T2| with T again.
The angle range of the set angle is 1 ° to 10 °.
The wind deflector has a first working position, and when the wind deflector is located at the first working position, the wind deflector is parallel to the direction of the air flow in the air flow channel, and the step S3 further includes adjusting the angle of the first included angle after the wind deflector is switched to the first working position if | T1-T2| ≧ T.
The minimum temperature difference t ranges from 0.5 ℃ to 1.5 ℃.
The heat exchanger includes first heat transfer portion and second heat transfer portion, the first heat transfer portion with the junction of second heat transfer portion constitutes the summit of V-arrangement, the deep bead includes first deep bead and second deep bead, first deep bead set up in on the windward side of first heat transfer portion, the second deep bead set up in on the windward side of second heat transfer portion, still include in step S2:
respectively acquiring the air outlet temperature Th1 of the end part of the first heat exchange part far away from the V-shaped peak, the air outlet temperature Th2 of the end part of the second heat exchange part far away from the V-shaped peak and the air outlet temperature Th3 of the peak, and respectively comparing | Th1-Th3| with t and | Th2-Th3| with t;
and adjusting the angle of the first included angle corresponding to the first wind deflector according to the comparison result of the Th1-Th3 and t, and adjusting the angle of the first included angle corresponding to the second wind deflector according to the comparison result of the Th2-Th3 and t.
An air conditioner comprises the indoor unit.
According to the indoor unit with the condensation preventing function, the air conditioner and the control method of the indoor unit, the wind shield is arranged on the windward side to guide airflow entering the heat exchanger, the airflow is guided to the part with larger resistance to compensate the part with small air volume, so that an air field in the shell is uniform, the temperature difference of all outlet air temperatures of the heat exchanger is small to prevent condensation, and meanwhile, the first included angle formed by the wind shield and the windward side is adjustable, so that automatic adjustment is realized according to different air field conditions, the air volume of the indoor unit of the air conditioner is not influenced as much as possible, and the performance of the air conditioner is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an indoor unit according to an embodiment of an indoor unit with a condensation prevention function, an air conditioner, and a control method of the indoor unit according to the present invention;
fig. 2 is a schematic diagram of an indoor unit according to an embodiment of an indoor unit with a condensation preventing function, an air conditioner, and a control method of the indoor unit according to the present invention;
fig. 3 is a schematic structural view of a wind deflector according to an embodiment of an indoor unit with a condensation prevention function, an air conditioner, and a control method of the indoor unit provided by the present invention;
in the figure:
1. a housing; 2. a heat exchanger; 3. a wind deflector; 4. a drive member; 5. a temperature sensing mechanism; 31. a vent hole; 21. a first heat exchanging portion; 22. a second heat exchanging part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The indoor unit shown in fig. 1 to 3 includes a casing 1 and a heat exchanger 2, an airflow channel is formed inside the casing 1, the heat exchanger 2 is disposed in the airflow channel, the indoor unit further includes a wind shield 3, the wind shield 3 is disposed on a windward side of the heat exchanger 2, a first included angle is formed between the wind shield 3 and the windward side, an air passing channel is formed between an edge of the wind shield 3 away from the heat exchanger 2 and a corresponding inner surface of the casing 1, airflow inside the airflow channel is adjusted by the wind shield 3, and partial air volume of the heat exchanger 2 portion with large air volume is compensated to the heat exchanger 2 portion with small air volume, so that an air field in the airflow channel is equalized, and finally, the air outlet temperature of the heat exchanger 2 after heat exchange is more uniform, and condensation is prevented.
The angle scope of first contained angle theta is 0 to 180, makes deep bead 3 carry out the adaptability according to the amount of wind in the airflow channel and adjusts, and is preferred, and when first contained angle was in 0 and 180, deep bead 3 laminated on heat exchanger 2, can not the air current produce the hindrance, and is special, the angle of first contained angle can automatically regulated to the requirement of the different amount of wind of adaptation and/or different wind fields.
The wind shield 3 is provided with a first working position, when the wind shield 3 is located at the first working position, the wind shield 3 is parallel to the direction of the air flow in the air flow channel, the wind shield 3 does not block the air flow at the moment, so that the trend of the air flow in the air flow channel is not influenced, the first working position can be an initial position of the wind shield 3 when being adjusted between 0-180 degrees, so that the wind shield swings in the rotating direction when being adjusted, preferably, when the heat exchanger is obliquely arranged in the air flow channel by 45 degrees, and when the wind shield 3 is located at the first working position, the angle of the first included angle is 45 degrees.
The windward side is divided into front portion, middle part and rear portion along the air current direction in the airflow channel, the deep bead 3 set up in the middle part, just the deep bead 3 can to the front portion rotates or to the rear portion rotates, divides the windward side into the part that the windage is big and the part that the windage is little according to simulation result of emulation software, and sets up the deep bead 3 between the part that the windage is big and the part that the windage is little to conveniently utilize the deep bead 3 to lead the air current of the part that the windage is little to the part that the windage is big, guarantee that the windage field is even, preferably, the windward side is rectangle, the deep bead 3 set up in rectangular central line department, thereby equally divide the windward side.
The heat exchanger 2 comprises a sealing plate, and the wind shield 3 is rotatably arranged on the sealing plate, so that the state of the wind shield on the heat exchanger 2 is adjustable, and the wind shield 3 cannot generate structural interference with the heat exchanger 2.
The indoor unit further comprises a driving piece 4, the driving piece 4 is arranged on the shell 1, the wind shield 3 is arranged on the driving piece 4, the driving piece 4 drives the wind shield 3 to adjust the angle of the first included angle, the driving piece 4 is a driving motor, and an output shaft of the driving motor drives one edge of the wind shield 3 to rotate, so that the wind shield 3 can rotate by taking the edge as an axis, and the state adjustment is achieved.
The indoor unit further comprises a plurality of temperature sensing mechanisms 5, all the temperature sensing mechanisms 5 are distributed on the leeward side of the heat exchanger 2, part of the temperature sensing mechanisms 5 detect the air outlet temperature of the heat exchanger 2 corresponding to one side of the wind shield 3, the rest part of the temperature sensing mechanisms 5 detect the air outlet temperature of the heat exchanger 2 corresponding to the other side of the wind shield 3, all the temperature sensing mechanisms 5 are electrically connected with the driving piece 4, the temperature sensing mechanisms 5 detect the air outlet temperature after heat exchange of the heat exchanger 2, and compare the air outlet temperatures corresponding to the two sides of the wind shield 3 to judge whether the air outlet temperature of the heat exchanger 2 is uniform, if not uniform, the state of the wind shield 3 can be adjusted, and if uniform, the state of the wind shield 3 is guaranteed.
Evenly distributed has a plurality of ventilation holes 31 on the deep bead 3, utilizes ventilation hole 31 to make the air current pass through deep bead 3, especially when deep bead 3 attaches on heat exchanger 2, ventilation hole 31 can make the air current pass through deep bead 3 and get into and carry out the heat transfer in heat exchanger 2, avoids causing the problem that partial heat exchanger 2 can't carry out the heat transfer because of sheltering from of deep bead 3.
When the diameter of the vent hole 31 is too large, the purpose of increasing the resistance cannot be achieved, and when the diameter is too small, the air volume is redistributed unevenly, so that the required effect cannot be achieved, therefore, the diameter range of the vent hole 31 is set to be 12mm-18mm, and the specific diameter is set according to the actual situation.
All the vent holes 31 are distributed in at least two rows, the ratio of the pitch between two adjacent vent holes 31 to the diameter of the vent holes 31 is 3:1 to 1.5:1, preferably 2:1, and the problem that the bearing capacity of the wind deflector 3 is reduced and the wind deflector is easy to damage due to too many vent holes 31 or the resistance of the wind deflector 3 is increased due to too few vent holes 31 is avoided.
The distance between the wind shield 3 and the windward side is 5-10 mm, so that interference between the wind shield 3 and the windward side in the rotation process is avoided.
The width range of the air passing channel is 5mm-15mm, and the air passing channel is set according to the air quantity, so that enough air flow can enter the heat exchanger 2 through the air passing channel for heat exchange.
The heat exchanger 2 comprises at least two sections of heat exchanging parts 21, a second included angle is formed between every two adjacent heat exchanging parts 21, the wind shielding plates 3 are arranged on the heat exchanging parts 21 at least one section, namely the heat exchanger 2 is of a two-fold heat exchanger 2, a three-fold heat exchanger 2 and other structures, the number and the positions of the wind shielding plates 3 are reasonably distributed according to the wind field where the heat exchanger 2 is located, and therefore the wind field is effectively uniform.
The heat exchanger 2 is a double-folded heat exchanger 2, the cross section of the heat exchanger 2 is V-shaped, the air flow channel is provided with an air return opening on the shell 1, the vertex of the V-shaped point points to the air return opening, the air flow preferentially passes through the vertex of the V-shaped point and then passes through other parts of the V-shaped point, because of the V-shaped point, the air resistance at the vertex of the V-shaped point is maximum, the air flow is minimum, the heat exchange efficiency of the heat exchanger 2 is minimum, the temperature difference between the air flow temperature and the air outlet temperature at other positions of the V-shaped point is large, and therefore condensation is easy to generate.
The heat exchanger 2 comprises a first heat exchanging portion 21 and a second heat exchanging portion 22, the joint of the first heat exchanging portion 21 and the second heat exchanging portion 22 forms the vertex of the V shape, the wind blocking plate 3 comprises a first wind blocking plate and a second wind blocking plate, the first wind blocking plate is arranged on the windward side of the first heat exchanging portion 21, the second wind blocking plate is arranged on the windward side of the second heat exchanging portion 22, the first heat exchanging portion 21 is enabled to uniformly wind out through the first wind blocking plate, the second heat exchanging portion 22 is enabled to uniformly wind out during the second wind blocking plate, and the purpose that the wind outlet temperature of the first heat exchanging portion 21 and the whole second heat exchanging portion 22 is uniform is finally achieved.
The indoor unit further comprises a water receiving tray, the first heat exchanging portion 21 is located above the second heat exchanging portion 22, the water receiving tray is located below the second heat exchanging portion 22, the wind blocking plate 3 on the second heat exchanging portion 22 is arranged below the heat exchanger 2, the width of the air passing channel formed by the first wind blocking plate is smaller than that of the air passing channel formed by the second wind blocking plate, and the influence of the water receiving tray on airflow is avoided.
The indoor unit further comprises three temperature sensing mechanisms 5, the three temperature sensing mechanisms 5 are arranged on the leeward side of the heat exchanger 2, one temperature sensing mechanism 5 is arranged at one end of the V shape, the other temperature sensing mechanism 5 is arranged at the other end of the V shape, the rest temperature sensing mechanisms 5 are arranged at the vertex of the V shape, namely the air outlet temperature of the two endpoints of the V shape and the air outlet temperature of the vertex are respectively detected, and finally the air outlet temperature of the whole heat exchanger 2 can be guaranteed to be uniform.
The material of the wind deflector 3 comprises one or more of sheet metal, alloy, rubber or plastics.
The control method of the indoor unit further comprises a driving part 4, the driving part 4 is arranged on the shell 1, the wind shield 3 is arranged on the driving part 4, the driving part 4 drives the wind shield 3 to adjust the angle of the first included angle, the indoor unit further comprises a plurality of temperature sensing mechanisms 5, all the temperature sensing mechanisms 5 are distributed on two sides of the wind shield 3, and all the temperature sensing mechanisms 5 are electrically connected with the driving part 4, and the control method comprises the following steps:
step S1, setting a minimum temperature difference value t, wherein when the temperature difference of the outlet air temperature is smaller than the minimum temperature difference value, the condensation problem cannot be caused on the heat exchanger 2;
step S2, acquiring the air outlet temperature T1 of the heat exchanger 2 on the first side of the wind shield 3 and the air outlet temperature T2 of the second side of the wind shield 3 by using the temperature sensing mechanism 5 arranged on the leeward side of the heat exchanger 2, and comparing the absolute value of T1-T2 absolute value with the absolute value of T, wherein the first side of the wind shield 3 is the first direction of rotation of the wind shield 3, and the second side is the second direction of rotation of the wind shield 3, and the air outlet temperatures of the first side and the second side of the wind shield 3 can be completely acquired after the air outlet temperatures of the whole heat exchanger 2 are acquired;
s3, if the absolute value of T1-T2 is larger than or equal to T, adjusting the angle of the first included angle, so that the wind shielding effect of the wind shield 3 is adjusted, the air volume on two sides of the wind shield 3 is adjusted, and the purpose of adjusting T1 and T2 is finally achieved;
if the angle of the first included angle is kept unchanged if the angle is less than T, namely | T1-T2|, the integral outlet air temperature of the heat exchanger 2 is uniform, and the condensation problem does not exist.
The indoor unit has a cooling mode:
in the cooling mode:
if T1-T2 is not less than T, it is indicated that the air outlet temperature corresponding to the first side of the wind shield 3 is greater than the air outlet temperature corresponding to the second side, the wind shield 3 rotates towards the first side, the blocking effect of the wind shield 3 on the air volume of the first side is increased, the air outlet temperature corresponding to the first side is reduced, the air outlet temperature corresponding to the second side is increased, the overall air outlet temperature is balanced, and the angle of the first included angle is increased;
if T2-T1 is greater than or equal to T, it is indicated that the air outlet temperature corresponding to the second side of the wind shield 3 is greater than the air outlet temperature corresponding to the first side, the wind shield 3 rotates towards the second side, the blocking effect of the wind shield 3 on the air volume of the second side is increased, so that the air outlet temperature corresponding to the second side is reduced, the air outlet temperature corresponding to the first side is increased, the overall air outlet temperature is balanced, and the angle of the first included angle is also reduced.
Taking the double-folding heat exchanger as an example, the double-folding heat exchanger comprises two heat exchanging parts, each heat exchanging part is obliquely arranged in an airflow channel at an angle of 45 degrees, and each heat exchanging part is provided with a wind shield;
for one wind shield, the heat exchange part at one side of the wind shield 3, which is far away from the joint of the two heat exchange parts, forms the first side, the heat exchange part at one side of the wind shield 3, which is close to the joint of the two heat exchange parts, forms the second side, and the first included angle is an included angle formed by the wind shield and the heat exchange part at the second side;
the angle of the first included angle corresponding to the first working position is 45 degrees, when the air outlet temperature T1 of the first side is higher than the air outlet temperature T2 of the second side, the air outlet quantity of the first side needs to be reduced, the wind deflector 3 is adjusted to swing towards the direction of the first side, so that the blocking effect of the wind deflector 3 on the air quantity of the first side is increased, the air quantity passing through the first side is reduced, the air quantity passing through the second side is increased, and the angle of the first included angle can be adjusted from 45 degrees to 90 degrees;
similarly, when the air outlet temperature T1 of first side is less than the air outlet temperature T2 of second side, need reduce the air output that reduces the second side this moment, then adjust deep bead 3 and swing to second side direction to increase the effect of blockking the air output of second side by deep bead 3, thereby reduced the air output through the second side and increased the air output through the first side, also can say that the angle with first contained angle is adjusted to 0 by 45.
The wind shield 3 is provided with a first working position, when the wind shield 3 is positioned at the first working position, the wind shield 3 is parallel to the direction of the air flow in the air flow channel, and the indoor unit is provided with a heating mode:
in the heating mode, the wind deflector 3 is switched to the first operating position, and since there is no condensation problem in the heating mode, in order to prevent the wind deflector 3 from affecting the air volume, the wind deflector 3 is adjusted to a position parallel to the air flow direction at this time, thereby preventing the wind deflector 3 from affecting the air volume.
Step S3 further includes:
after each rotation of the wind deflector 3 by the set angle, | T1-T2| is compared again with T.
The angle of the set angle ranges from 1 ° to 10 °, preferably 5 °.
The wind deflector 3 has a first working position, and when the wind deflector 3 is located at the first working position, the angle of the first included angle is 90 °, and the step S3 further includes adjusting the angle of the first included angle after the wind deflector 3 is switched to the first working position if | T1-T2| ≧ T, that is, the wind deflector 3 swings at the first working position, and when | T1-T2| < T, the wind deflector 3 is attached to the heat exchanger 2 without blocking wind.
The minimum temperature difference t is in a range of 0.5 ℃ to 1.5 ℃, preferably 1 ℃, that is, when the temperature difference between the outlet air temperatures at the two sides of the wind shield 3 is greater than 1 ℃, the first included angle needs to be adjusted.
The heat exchanger 2 includes a first heat exchanging portion 21 and a second heat exchanging portion 22, a joint of the first heat exchanging portion 21 and the second heat exchanging portion 22 constitutes a vertex of the V-shape, the wind blocking plate 3 includes a first wind blocking plate and a second wind blocking plate, the first wind blocking plate is disposed on a windward side of the first heat exchanging portion 21, the second wind blocking plate is disposed on a windward side of the second heat exchanging portion 22, and the step S2 further includes:
respectively acquiring the air outlet temperature Th1 of the end part of the first heat exchanging part 21 far away from the V-shaped peak, the air outlet temperature Th2 of the end part of the second heat exchanging part 22 far away from the V-shaped peak and the air outlet temperature Th3 of the peak, and respectively comparing | Th1-Th3| with t and | Th2-Th3| with t;
and adjusting the angle of the first included angle corresponding to the first wind shield according to the comparison result of the Th1-Th3 and the t, and adjusting the angle of the first included angle corresponding to the second wind shield according to the comparison result of the Th2-Th3 and the t, namely adjusting the first wind shield and the second wind shield respectively, and finally realizing the uniform air outlet temperature of the whole heat exchanger 2.
An air conditioner comprises the indoor unit.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (27)

1. The utility model provides an indoor unit, includes casing (1) and heat exchanger (2), casing (1) inside is formed with airflow channel, heat exchanger (2) set up in airflow channel, its characterized in that: the indoor unit further comprises a wind shield (3), the wind shield (3) is arranged on the windward side of the heat exchanger (2), a first included angle is formed between the wind shield (3) and the windward side, and a wind passing channel is formed between the edge of the wind shield (3) far away from the heat exchanger (2) and the corresponding inner surface of the shell (1).
2. The indoor unit according to claim 1, wherein: the first included angle is in an angle range of 0-180 degrees.
3. The indoor unit according to claim 2, wherein: the wind shield (3) is provided with a first working position, and when the wind shield (3) is located at the first working position, the wind shield (3) is parallel to the airflow direction in the airflow channel.
4. The indoor unit according to claim 1, wherein: the windward side is divided into a front part, a middle part and a rear part along the airflow direction in the airflow channel, the wind shield (3) is arranged in the middle part, and the wind shield (3) can rotate towards the front part or the rear part.
5. The indoor unit according to claim 1, wherein: the heat exchanger (2) comprises a sealing plate, and the wind shield (3) is rotatably arranged on the sealing plate.
6. The indoor unit according to claim 1, wherein: the indoor unit further comprises a driving piece (4), the driving piece (4) is arranged on the shell (1), the wind shield (3) is arranged on the driving piece (4), and the driving piece (4) drives the wind shield (3) to adjust the angle of the first included angle.
7. The indoor unit according to claim 6, wherein: the indoor unit further comprises a plurality of temperature sensing mechanisms (5), all the temperature sensing mechanisms (5) are distributed on the leeward side of the heat exchanger (2), part of the temperature sensing mechanisms (5) detect the air outlet temperature of the heat exchanger (2) corresponding to one side of the wind shield (3), the rest part of the temperature sensing mechanisms (5) detect the air outlet temperature of the heat exchanger (2) corresponding to the other side of the wind shield (3), and all the temperature sensing mechanisms (5) are electrically connected with the driving piece (4).
8. The indoor unit according to claim 1, wherein: a plurality of vent holes (31) are uniformly distributed on the wind shield (3).
9. The indoor unit according to claim 8, wherein: the diameter range of the vent hole (31) is 12mm-18 mm.
10. The indoor unit according to claim 9, wherein: all the ventilation holes (31) are distributed in at least two rows, and the ratio of the pitch between every two adjacent ventilation holes (31) to the diameter of each ventilation hole (31) ranges from 3:1 to 1.5: 1.
11. The indoor unit according to claim 1, wherein: the distance between the wind shield (3) and the windward side ranges from 5mm to 10 mm.
12. The indoor unit according to claim 1, wherein: the width range of the air passing channel is 5mm-15 mm.
13. The indoor unit according to claim 1, wherein: the heat exchanger (2) comprises at least two sections of heat exchanging parts, a second included angle is formed between every two adjacent heat exchanging parts, and the wind shield (3) is arranged on at least one section of the heat exchanging parts.
14. The indoor unit according to claim 13, wherein: the cross section of the heat exchanger (2) is V-shaped, an air return opening is formed in the shell (1) of the airflow channel, and the vertex of the V-shaped air return opening points to the air return opening.
15. The indoor unit according to claim 14, wherein: the heat exchanger (2) comprises a first heat exchanging portion (21) and a second heat exchanging portion (22), the joint of the first heat exchanging portion (21) and the second heat exchanging portion (22) forms the vertex of the V shape, the wind shield (3) comprises a first wind shield and a second wind shield, the first wind shield is arranged on the windward side of the first heat exchanging portion (21), and the second wind shield is arranged on the windward side of the second heat exchanging portion (22).
16. The indoor unit according to claim 15, wherein: the indoor unit further comprises a water receiving disc, the first heat exchanging portion (21) is located above the second heat exchanging portion (22), the water receiving disc is located below the second heat exchanging portion (22), the wind blocking plate (3) on the second heat exchanging portion (22) is arranged below the heat exchanger (2), and the width of the air passing channel formed by the first wind blocking plate is smaller than that of the air passing channel formed by the second wind blocking plate.
17. The indoor unit according to claim 15, wherein: the indoor unit further comprises three temperature sensing mechanisms (5), the three temperature sensing mechanisms (5) are arranged on the leeward side of the heat exchanger (2), one temperature sensing mechanism (5) is arranged at one end of the V shape, the other temperature sensing mechanism (5) is arranged at the other end of the V shape, and the rest temperature sensing mechanisms (5) are arranged at the vertex of the V shape.
18. The indoor unit according to claim 1, wherein: the material of the wind shield (3) comprises one or more of sheet metal, alloy, rubber or plastics.
19. A control method of an indoor unit according to any one of claims 1 to 18, characterized in that: the indoor unit further comprises a driving piece (4), the driving piece (4) is arranged on the shell (1), the wind shield (3) is arranged on the driving piece (4), the driving piece (4) drives the wind shield (3) to adjust the angle of the first included angle, the indoor unit further comprises a plurality of temperature sensing mechanisms (5), all the temperature sensing mechanisms (5) are distributed on two sides of the wind shield (3), all the temperature sensing mechanisms (5) are electrically connected with the driving piece (4), and the control method comprises the following steps:
step S1, setting a minimum temperature difference value t;
s2, obtaining the air outlet temperature T1 of the heat exchanger (2) on the first side of the wind shield (3) and the air outlet temperature T2 of the second side of the wind shield (3), and comparing | T1-T2| and T;
step S3, if the | T1-T2| is more than or equal to T, adjusting the angle of the first included angle;
if the | T1-T2| is less than T, the angle of the first included angle is kept unchanged.
20. The control method according to claim 19, characterized in that: the indoor unit has a cooling mode:
in the cooling mode:
if T1-T2 is more than or equal to T, the wind shield (3) rotates to the first side;
if T2-T1 is larger than or equal to T, the wind shield (3) rotates to the second side.
21. The control method according to claim 19, characterized in that: the wind shield (3) is provided with a first working position, when the wind shield (3) is positioned at the first working position, the wind shield (3) is parallel to the direction of air flow in the air flow channel, and the indoor unit is provided with a heating mode:
in the heating mode, the wind deflector (3) is switched into the first operating position.
22. The control method according to claim 20 or 21, characterized in that: step S3 further includes:
after the wind shield (3) rotates for a set angle every time, comparing the | T1-T2| and T again.
23. The control method according to claim 22, characterized in that: the angle range of the set angle is 1 ° to 10 °.
24. The control method according to claim 19, characterized in that: the wind shield (3) is provided with a first working position, when the wind shield (3) is located at the first working position, the wind shield (3) is parallel to the direction of the air flow in the air flow channel, and the step S3 further includes adjusting the angle of the first included angle after the wind shield (3) is switched to the first working position if | T1-T2| ≧ T.
25. The control method according to claim 19, characterized in that: the minimum temperature difference t ranges from 0.5 ℃ to 1.5 ℃.
26. The control method according to claim 19, characterized in that: the heat exchanger (2) comprises a first heat exchanging portion (21) and a second heat exchanging portion (22), the joint of the first heat exchanging portion (21) and the second heat exchanging portion (22) forms the vertex of the V shape, the wind deflector (3) comprises a first wind deflector and a second wind deflector, the first wind deflector is arranged on the windward side of the first heat exchanging portion (21), the second wind deflector is arranged on the windward side of the second heat exchanging portion (22), and the step S2 further comprises:
respectively acquiring the outlet air temperature Th1 of the end part of the first heat exchanging part (21) far away from the V-shaped peak, the outlet air temperature Th2 of the end part of the second heat exchanging part (22) far away from the V-shaped peak and the outlet air temperature Th3 of the peak, and respectively comparing | Th1-Th3| with t and | Th2-Th3| with t;
and adjusting the angle of the first included angle corresponding to the first wind deflector according to the comparison result of the Th1-Th3 and t, and adjusting the angle of the first included angle corresponding to the second wind deflector according to the comparison result of the Th2-Th3 and t.
27. An air conditioner, characterized in that: comprising the indoor unit of any one of claims 1 to 18.
CN202010513935.5A 2020-06-08 2020-06-08 Indoor unit with condensation preventing function, air conditioner and control method of indoor unit Pending CN111678200A (en)

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CN202010513935.5A CN111678200A (en) 2020-06-08 2020-06-08 Indoor unit with condensation preventing function, air conditioner and control method of indoor unit

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Application Number Priority Date Filing Date Title
CN202010513935.5A CN111678200A (en) 2020-06-08 2020-06-08 Indoor unit with condensation preventing function, air conditioner and control method of indoor unit

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CN112524700A (en) * 2020-12-21 2021-03-19 珠海格力电器股份有限公司 Air conditioner indoor unit, air conditioner and control method of air conditioner
CN114198809A (en) * 2021-11-23 2022-03-18 青岛海尔空调电子有限公司 Air conditioner and indoor unit thereof
WO2023185868A1 (en) * 2022-04-01 2023-10-05 青岛海尔空调器有限总公司 Air conditioner and control method therefor

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CN110500703A (en) * 2019-08-27 2019-11-26 珠海格力电器股份有限公司 Air conditioner, air conditioner condensation judgment method, device and precautionary measures
CN110529923A (en) * 2019-09-26 2019-12-03 珠海格力电器股份有限公司 Air conditioner indoor unit, air-conditioner set and adjusting method
CN212362211U (en) * 2020-06-08 2021-01-15 珠海格力电器股份有限公司 Indoor unit and air conditioner with condensation prevention function

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Publication number Priority date Publication date Assignee Title
CN207081177U (en) * 2017-08-25 2018-03-09 无锡市富尔盛机电有限公司 Indoor apparatus of air conditioner both sides air-supply balanced device
CN110500703A (en) * 2019-08-27 2019-11-26 珠海格力电器股份有限公司 Air conditioner, air conditioner condensation judgment method, device and precautionary measures
CN110529923A (en) * 2019-09-26 2019-12-03 珠海格力电器股份有限公司 Air conditioner indoor unit, air-conditioner set and adjusting method
CN212362211U (en) * 2020-06-08 2021-01-15 珠海格力电器股份有限公司 Indoor unit and air conditioner with condensation prevention function

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CN112524700A (en) * 2020-12-21 2021-03-19 珠海格力电器股份有限公司 Air conditioner indoor unit, air conditioner and control method of air conditioner
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WO2023185868A1 (en) * 2022-04-01 2023-10-05 青岛海尔空调器有限总公司 Air conditioner and control method therefor

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