CN109974085B - Indoor unit of air conditioner and control method thereof - Google Patents

Indoor unit of air conditioner and control method thereof Download PDF

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Publication number
CN109974085B
CN109974085B CN201910253207.2A CN201910253207A CN109974085B CN 109974085 B CN109974085 B CN 109974085B CN 201910253207 A CN201910253207 A CN 201910253207A CN 109974085 B CN109974085 B CN 109974085B
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China
Prior art keywords
air outlet
sliding door
air
indoor
indoor unit
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CN201910253207.2A
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Chinese (zh)
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CN109974085A (en
Inventor
钟志尧
程超
吴君
田俊
彭杰林
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN201910253207.2A priority Critical patent/CN109974085B/en
Publication of CN109974085A publication Critical patent/CN109974085A/en
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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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • 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
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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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)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

The invention discloses an air conditioner indoor unit and a control method thereof, wherein the air conditioner indoor unit comprises: the indoor fan comprises a shell, an indoor heat exchanger, an indoor fan, a sliding door and a driving assembly. The front side of casing is equipped with the front side air outlet, and the casing is equipped with the air intake, and indoor heat exchanger and indoor fan are all established in the casing, and the sliding door is movably established in the front side of casing along the length direction of casing, and the sliding door can be moved to the place ahead of front side air outlet in order to close the front side air outlet, and the sliding door can be moved to the below of front side air outlet in order to open the front side air outlet, and drive assembly establishes on the casing and cooperates in order to drive the sliding door reciprocates with the sliding door. According to the air conditioner indoor unit, the sliding door capable of moving up and down is arranged on the front side of the casing, so that the sliding door can be conveniently assembled with the driving assembly and the casing. The sliding door has a longer sliding stroke, and the sliding stroke of the sliding door can be controlled to adjust the air outlet area of the front air outlet, so that the refrigerating and heating effects can be improved.

Description

Indoor unit of air conditioner and control method thereof
Technical Field
The invention relates to the field of air treatment equipment, in particular to an air conditioner indoor unit and a control method thereof.
Background
In the related art, the switch door used for opening and closing the front air outlet is arranged in the air conditioner indoor unit, but the structural design of the switch door is complex, and the switch door needs to avoid parts in the casing, so that the assembly difficulty is high, and the assembly efficiency of the air conditioner indoor unit is affected. And the movable range of the switch door is smaller, so that the product use effect of the indoor unit of the air conditioner is greatly influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an air conditioner indoor unit having advantages of convenient assembly and good cooling and heating effects.
The invention also provides a control method of the air conditioner indoor unit.
According to an embodiment of the invention, an indoor unit of an air conditioner comprises: the front side of the shell is provided with a front side air outlet, and the shell is provided with an air inlet; the indoor heat exchanger is arranged in the shell; the indoor fan is arranged in the shell; the sliding door is movably arranged on the front side of the machine shell along the length direction of the machine shell, can move to the front of the front air outlet to close the front air outlet, and can move to the lower part of the front air outlet to open the front air outlet; the driving assembly is arranged on the shell and matched with the sliding door to drive the sliding door to move up and down.
According to the air conditioner indoor unit provided by the embodiment of the invention, the sliding door capable of moving up and down is arranged on the front side of the casing, so that the sliding door can be conveniently assembled with the driving assembly and the casing, the assembling difficulty of the sliding door can be reduced, and the assembling efficiency can be improved. Moreover, the sliding door has a longer sliding stroke, so that the air outlet area of the front air outlet can be adjusted by controlling the sliding stroke of the sliding door, and the refrigerating and heating effects of the indoor unit of the air conditioner can be improved.
According to some embodiments of the invention, the indoor fan is one of a centrifugal fan, a cross-flow fan and an oblique-flow fan, a first air duct and a second air duct are arranged in the casing, the first air duct extends in the front-rear direction, and the first air duct supplies air towards the front air outlet; the second air duct comprises an annular air guide part and an extending air guide part communicated with the annular air guide part, the annular air guide part is sleeved outside the first air duct and faces the front air outlet for supplying air, the extending air guide part extends downwards from the annular air guide part, and the indoor fan is arranged in the extending air guide part and located below the front air outlet.
In some embodiments of the invention, the indoor fan is located directly in front of the indoor heat exchanger.
In some embodiments of the invention, the indoor fan further comprises an upper fan disposed within the first air duct.
According to some embodiments of the invention, the drive assembly comprises: the driving motor is fixed on the shell; the driving gear is connected with the driving motor so as to be driven by the driving motor to rotate; the driving rack is fixed on the inner wall of the sliding door and meshed with the driving gear.
In some embodiments of the invention, the drive assembly further comprises a rail secured to the front surface of the housing, the drive rack slidably disposed on the rail.
In some embodiments of the present invention, the guide rail is formed into a hollow tubular structure, the guide rail is sleeved on the rack, an avoidance gap is formed on the guide rail, and the driving gear is meshed with the driving rack through the avoidance gap.
In some embodiments of the present invention, the air conditioner indoor unit further includes a fixing bracket to which the driving motor and the guide rail are respectively fixed, and the fixing bracket is fixed to the cabinet.
According to some embodiments of the invention, the front surface of the housing is provided with a receiving groove, the front air outlet is located in the receiving groove, and the sliding door is movably located in the receiving groove.
According to the control method of the air conditioner indoor unit, the air conditioner indoor unit is the air conditioner indoor unit according to the embodiment of the invention, and the control method comprises the following steps: detecting the indoor environment temperature and judging whether the indoor environment temperature reaches a set temperature or not; when the difference between the indoor environment temperature and the set temperature is larger than a first set difference, controlling the sliding door to move to a state of completely opening the front air outlet, and controlling the rotating speed of the indoor fan to be a set rotating speed; and when the difference value between the indoor environment temperature and the set temperature is smaller than the second set difference value, reducing the rotating speed of the indoor fan.
According to the control method of the air conditioner indoor unit, the operation comparison method can improve the refrigerating and heating efficiency of the air conditioner indoor unit, can reduce the energy consumption of the air conditioner indoor unit while meeting the use requirement of a user, and has extremely strong practical performance.
According to some embodiments of the invention, when detecting that the front side of the casing has a target object, the sliding door is controlled to move to partially block the front side air outlet.
According to some embodiments of the invention, when the difference between the indoor environment temperature and the set temperature is smaller than the second set difference, the sliding door is controlled to move to partially shield the front air outlet, the rotating speed of the indoor fan is reduced, and the operating frequency of the compressor is reduced.
In some embodiments of the present invention, when the sliding door moves to partially block the front air outlet, the control method further includes the steps of: when the sliding door moves to a position where the air outlet area of the front air outlet is not more than one third, controlling the rotating speed of the indoor fan to be reduced to a first rotating speed; when the sliding door continues to move to cover the air outlet area of the front air outlet, which is more than one third and not more than one half, the rotating speed of the fan is controlled to be reduced to a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 is a schematic view of an overall structure of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a front view of an indoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along the direction A-A in FIG. 2;
fig. 4 is an exploded view of an indoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 shown at circle B;
FIG. 6 is an enlarged view of a portion of FIG. 4 shown at circle C;
fig. 7 is a schematic view showing a fitting structure of a driving rack and a guide rail according to a first embodiment of the present invention;
FIG. 8 is a cross-sectional view taken along the direction D-D in FIG. 7;
FIG. 9 is a cross-sectional view taken along the direction E-E in FIG. 7;
FIG. 10 is a schematic view of the overall structure of a drive assembly according to an embodiment of the present invention;
FIG. 11 is an exploded view of a drive assembly according to an embodiment of the present invention;
FIG. 12 is a side view of a drive assembly according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view taken in the direction F-F of FIG. 12;
fig. 14 is a sectional view of a drive gear according to a first embodiment of the present invention in a horizontal direction;
fig. 15 is a sectional view of a driving gear according to a second embodiment of the present invention in a horizontal direction;
fig. 16 is a sectional view of a drive gear according to a third embodiment of the present invention in a horizontal direction;
fig. 17 is a sectional view of a drive gear according to a fourth embodiment of the present invention in a horizontal direction;
Fig. 18 is a sectional view of a drive gear according to a fifth embodiment of the present invention in a horizontal direction;
fig. 19 is a flowchart of a control method of an air conditioner indoor unit according to an embodiment of the present invention.
Reference numerals:
the indoor unit 100 of the air conditioner,
a casing 1, a front air outlet 1a, an air inlet 1b, a containing groove 1c,
the first air duct 11, the second air duct 12, the annular air guide portion 12a, the extended air guide portion 12b, the fixing portion 13, the fixing base 131, the first mounting hole 132, the first groove 133, the second groove 134, the air guide plate 14,
the heat exchanger 2 in the room is provided with a heat exchanger,
an indoor fan 3, a centrifugal fan 31, an upper fan 32,
the sliding door 4 is provided with a plurality of sliding doors,
the driving assembly 5, the driving motor 51, the motor housing 511, the main body portion 511a, the limit portion 511b, the fixing lug 512, the second mounting hole 512a, the driving gear 52, the driving rack 53, the fixing body 531, the tooth portion 532, the guide rail 54, the body portion 541, the guide groove 542, the cylinder 543, the escape notch 543a, the connection plate 544, the fixing hole 544a,
a fixing bracket 6, an assembly groove 6a, a screw column 61.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An air conditioning indoor unit 100 according to an embodiment of the present invention, which can cool and heat indoor air, is described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, an indoor unit 100 of an air conditioner according to an embodiment of the present invention may include: a casing 1, an indoor heat exchanger 2, an indoor fan 3, a sliding door 4 and a driving assembly 5.
Wherein, the front side of casing 1 can be equipped with front side air outlet 1a, can be equipped with air intake 1b on the casing 1, and indoor heat exchanger 2 and indoor fan 3 all can establish in casing 1. Specifically, when the indoor unit 100 of the air conditioner is in operation, the indoor fan 3 may rotate to guide the indoor air flow to enter the casing 1 through the air inlet 1b, the air flow exchanges heat with the indoor heat exchanger 2 in the casing 1 to form a heat exchange air flow, and then the indoor fan 3 may guide the heat exchange air flow after the heat exchange is completed to be discharged through the front air outlet 1a, and the heat exchange air flow may circulate in the indoor space, thereby achieving the purpose of adjusting the indoor temperature.
As shown in fig. 1 to 3, the sliding door 4 may be provided at the front side of the cabinet 1 and the sliding door 4 may be movable in the length direction of the cabinet 1 (up-down direction as shown in fig. 1). The sliding door 4 may be moved to the front of the front air outlet 1a to close the front air outlet 1a, and the sliding door 4 may be moved to the lower side of the front air outlet 1a to open the front air outlet 1a. A driving assembly 5 may be provided on the cabinet 1 and the driving assembly 5 may be engaged with the sliding door 4 to drive the sliding door 4 to move up and down.
Specifically, the driving assembly 5 may drive the sliding door 4 to move in the up-down direction. When the front air outlet 1a needs to be opened, the driving assembly 5 can drive the sliding door 4 to move downwards relative to the casing 1 so as to expose the front air outlet 1a, and the heat exchange air flow can be discharged through the front air outlet 1a. When the front air outlet 1a needs to be closed, the driving assembly 5 can drive the sliding door 4 to move upwards relative to the casing 1, and the sliding door 4 can move to the front of the front air outlet 1a to shield the front air outlet 1a.
It will be appreciated that, since the sliding door 4 is disposed at the front side of the housing 1, and the driving assembly 5 may be disposed on the housing 1, the sliding door 4 may be conveniently assembled with the driving assembly 5 and the housing 1, and the difficulty in assembling the sliding door 4 may be reduced. Moreover, the sliding door 4 is located outside the casing 1, so that the sliding stroke of the sliding door 4 can be increased, and the air outlet area of the front air outlet 1a can be adjusted by controlling the sliding stroke of the sliding door 4, so that the refrigerating and heating effects of the air conditioner indoor unit 100 can be improved.
For example, since the sliding door 4 has a long sliding stroke, the moving position of the sliding door 4 can be precisely controlled by the driving assembly 5. When the temperature difference between the indoor ambient temperature and the desired temperature required by the user is large, the driving assembly 5 may drive the sliding door 4 to move downward to completely open the front air outlet 1a, thereby increasing the air outlet area of the front air outlet 1a and improving the cooling and heating efficiency of the air conditioning indoor unit 100. When the temperature difference between the indoor environment temperature and the ideal temperature required by the user is smaller, the driving assembly 5 can drive the sliding door 4 to move upwards to the set position so that the sliding door 4 partially shields the front air outlet 1a, thereby reducing the air outlet quantity of the front air outlet 1a, ensuring that the indoor environment is stable at the current temperature and improving the use comfort of the user.
According to the air conditioner indoor unit 100 of the embodiment of the invention, the sliding door 4 capable of moving up and down is arranged on the front side of the casing 1, so that the sliding door 4 can be conveniently assembled with the driving assembly 5 and the casing 1, the assembling difficulty of the sliding door 4 can be reduced, and the assembling efficiency can be improved. Moreover, the sliding door 4 has a long sliding stroke, so that the air outlet area of the front air outlet 1a can be adjusted by controlling the sliding stroke of the sliding door 4, and the refrigerating and heating effects of the air conditioning indoor unit 100 can be improved.
As shown in fig. 3, according to some embodiments of the present invention, the indoor fan 3 may be any one of a centrifugal fan, a cross flow fan, and a diagonal flow fan, the casing 1 may be provided therein with a first air duct 11 and a second air duct 12, the first air duct 11 may extend in a front-rear direction, the first air duct 11 may supply air toward the front-side air outlet 1a, the second air duct 12 may include an annular air guide portion 12a and an extended air guide portion 12b in communication with the annular air guide portion 12a, the annular air guide portion 12a may be sheathed outside the first air duct 11 and may supply air toward the front-side air outlet 1a, the extended air guide portion 12b may extend downward from the annular air guide portion 12a, the indoor fan 3 may be disposed in the extended air guide portion 12b and the centrifugal fan 31 may be located below the front-side air outlet 1a, thereby not only making the overall structure of the indoor unit 100 more compact, but also increasing the air output of the front-side air outlet 1 a.
For example, since the indoor fan 3 may be the centrifugal fan 31, the air supply principle of the centrifugal fan 31 is axial air inlet and radial air outlet, so that the centrifugal fan 31 may be disposed below the front air outlet 1a, the centrifugal fan 31 may guide the air flow to flow through the extended air guiding portion 12b and the annular air guiding portion 12a in sequence, and the air guiding plate 14 of the air conditioning indoor unit 100 may be disposed at the front air outlet 1a, so that the air guiding plate 14 and the centrifugal fan 31 may be disposed in a staggered manner in the front-rear direction, and the thickness of the air conditioning indoor unit 100 may be reduced. When the air flow is discharged through the annular air guide portion 12a, a negative pressure can be formed in the first air duct 11, and under the action of the negative pressure, a flow of air flowing toward the front air outlet 1a can be formed in the first air duct 11, so that the air output of the air conditioning indoor unit 100 can be increased, and the refrigerating and heating efficiency of the air conditioning indoor unit 100 can be improved.
Alternatively, the indoor heat exchanger 2 may extend vertically in the up-down direction, the lower end of the indoor heat exchanger 2 may extend below the centrifugal fan 31, and the top end of the indoor heat exchanger 2 extends above the annular air guiding portion 12a, so that the overall structure of the air conditioner indoor unit 100 may be more compact, the contact area between the indoor heat exchanger 2 and the air flow may be increased, and further the heat exchange efficiency of the indoor heat exchanger 2 may be improved.
As shown in fig. 3, in some embodiments of the present invention, the indoor fan 3 may be located right in front of the indoor heat exchanger 2, so that the indoor fan 3 may guide the air flow to be directly blown to the indoor heat exchanger 2 from the back to the front, and may increase the air volume acting on the indoor heat exchanger 2, and thus may improve the heat exchange efficiency of the indoor heat exchanger 2.
As shown in fig. 3, in some embodiments of the present invention, the indoor fan 3 may further include an upper fan 32, and the upper fan 32 may be disposed in the first duct 11, whereby the air output of the indoor fan 3 may be increased. For example, the upper fan 32 may be an axial flow fan, and the air supply principle of the axial flow fan is axial air inlet and axial air outlet. When the upper fan 32 works, the upper fan 32 can guide the air flow to circulate along the back-to-front direction, and the air flow can be discharged along the first air duct 11 and the front air outlet 1a after heat exchange with the indoor heat exchanger 2 is completed. Thus, when the indoor unit 100 of the air conditioner is operated, the upper fan 32 and the centrifugal fan 31 are operated simultaneously, and the air output of the indoor fan 3 can be greatly increased.
It will of course be appreciated that the centrifugal fan 31 and the upper fan 32 may also be controlled separately. For example, only the centrifugal fan 31 may be controlled to participate in the air blowing, only the upper fan 32 may be controlled to participate in the air blowing, and the centrifugal fan 31 and the upper fan 32 may be controlled to participate in the air blowing at the same time, and the arrangement may be selected according to the actual use requirement.
For example, when the temperature difference between the indoor environment temperature and the desired temperature required by the user is large, the centrifugal fan 31 and the upper fan 32 may be controlled to operate simultaneously, the centrifugal fan 31 may guide the first air flow to circulate in the extended air guide portion 12b and the annular air guide portion 12a in sequence, the upper fan 32 may guide the second air flow to circulate in the first air duct 11 in the back-to-front direction, the first air flow and the second air flow may mix on the front side of the upper fan 32 and then may be discharged through the front side air outlet 1a, thereby increasing the air output of the indoor fan 3, and further improving the cooling and heating efficiency of the air conditioner indoor unit 100. When the temperature difference between the indoor ambient temperature and the desired temperature required by the user is small, one of the centrifugal fan 31 and the upper fan 32 may be selected to participate in the air supply alone.
As shown in fig. 4, according to some embodiments of the present invention, the front surface of the cabinet 1 may be provided with a receiving groove 1c, the front air outlet 1a may be positioned in the receiving groove 1c, and the sliding door 4 may be movably positioned in the receiving groove 1c, thereby making the mating structure of the sliding door 4 and the cabinet 1 more compact and improving the external appearance of the indoor unit 100. Alternatively, the contour of the sliding door 4 may be the same as the contour of the accommodating groove 1 c. For example, the sliding door 4 may be formed in a square shape, and the receiving groove 1c may be formed in a square shape. For another example, the sliding door 4 may be formed in an elliptical shape, and the receiving groove 1c may be formed in an elliptical shape.
As shown in fig. 4, the driving assembly 5 may include: the driving motor 51, the driving gear 52 and the driving rack 53, wherein the driving motor 51 may be fixed on the casing 1, the driving gear 52 may be connected with the driving motor 51 to be driven to rotate by the driving motor 51, the driving rack 53 may be fixed on the inner wall of the sliding door 4 and the driving rack 53 may be engaged with the driving gear 52. Therefore, through the arrangement, the whole structural design of the driving assembly 5 can be simpler, and the operation is more convenient. And the rack-and-pinion mechanism composed of the drive gear 52 and the drive rack 53 has an advantage of running smoothly, whereby the running stability of the sliding door 4 can be improved.
It will be appreciated that when the drive assembly 5 drives the sliding door 4 to move to the set position, the drive motor 51 may stop driving, the motor shaft of the drive motor 51 may remain stationary, and the drive gear 52 may be held stationary because the motor shaft of the drive motor 51 rotates in synchronization with the drive gear 52. At this time, the driving gear 52 is engaged with the driving rack 53 to limit the sliding door 4, so that the sliding door 4 can be stably maintained at the current position.
In the specific example shown in fig. 4 to 6, a fixing portion 13 to be engaged with the driving motor 51 may be provided on the front side wall of the cabinet 1. Wherein the fixing portion 13 includes a fixing stage 131 recessed rearward with respect to the front side wall of the casing 1, and a first groove 133 and a second groove 134 extending in the front-rear direction. Wherein, the end surfaces of the fixing table 131 and the first groove body 133 are both formed in a circular arc shape, the fixing table 131 is disposed at the radial outer side of the first groove body 133, and two first mounting holes 132 are disposed on the fixing table 131 at intervals in the circumferential direction thereof. The end surface of the second groove 134 is formed in a square shape, the second groove 134 communicates with the first groove 133, and the first groove 133 and the second groove 134 each extend rearward from the fixing base 131.
As shown in fig. 6, the driving motor 51 includes a motor housing 511, the motor housing 511 includes a main body portion 511a and a limiting portion 511b, the main body portion 511a is connected with the limiting portion 511b, the outer contour of the main body portion 511a is identical to that of the first groove body 133, the outer contour of the limiting portion 511b is identical to that of the second groove body 134, two fixing lugs 512 distributed at intervals are provided on the main body portion 511a, and a second mounting hole 512a opposite to the corresponding first mounting hole 132 is provided on each fixing lug 512.
When the driving motor 51 is assembled with the casing 1, the main body portion 511a may be inserted into the first groove 133, and the limiting portion 511b may be inserted into the second groove 134, so that the driving motor 51 may be prevented from rotating relative to the casing 1, and a good pre-positioning effect may be achieved. After the main body portion 511a and the limiting portion 511b are mounted in place, the second mounting holes 512a on the two fixing lugs 512 are opposite to the corresponding first mounting holes 132, and screws can be respectively inserted through the corresponding second mounting holes 512a and the corresponding first mounting holes 132 to fix the driving motor 51 on the casing 1. Thus, by the above arrangement, the assembling mode between the driving motor 51 and the casing 1 can be made simpler, and the assembling efficiency of the driving motor 51 can be improved.
As shown in fig. 7 to 9, in some embodiments of the present invention, the driving assembly 5 may further include a guide rail 54, the guide rail 54 may be fixed on the front surface of the casing 1, the driving rack 53 may be slidably disposed on the guide rail 54, the guide rail 54 may play a role in guiding the driving rack 53, may prevent the driving rack 53 from shaking during operation, may make the operation of the driving rack 53 smoother, and may further improve the operational stability of the sliding door 4.
In the specific example shown in fig. 8-9, the guide rail 54 extends in the up-down direction. The guide rail 54 includes a body portion 541 and a guide groove 542, the guide groove 542 being provided on a side wall (a front side wall as shown in fig. 9) of the body portion 541 near the drive rack 53, the guide groove 542 extending in a moving direction (up-down direction as shown in fig. 8) of the drive rack 53. When the drive rack 53 is engaged with the guide rail 54, at least a portion of the drive rack 53 is positioned within the guide slot 542 and slidingly engages the guide slot 542. Therefore, through the arrangement, the structural design of the guide rail 54 can be simpler, and the stability of the cooperation of the guide rail 54 and the driving rack 53 can be improved.
As shown in fig. 10 to 13, in some embodiments of the present invention, the guide rail 54 may be formed into a hollow tubular structure, the guide rail 54 may be sleeved on the rack, the guide rail 54 may be provided with a avoiding notch 543a, and the driving gear 52 may be engaged with the driving rack 53 through the avoiding notch 543a, so that not only the engaging structure of the driving rack 53 and the guide rail 54 may be more compact, but also the guide rail 54 is sleeved on the driving rack 53, so that the engaging structure of the driving rack 53 and the guide rail 54 may be more firm, and further the running stability of the sliding door 4 may be improved.
As shown in fig. 10 to 12, in some embodiments of the present invention, the air conditioning indoor unit 100 may further include a fixing bracket 6, the driving motor 51 and the guide rail 54 may be fixed to the fixing bracket 6, respectively, and the fixing bracket 6 may be fixed to the cabinet 1, whereby the fixing bracket 6 may integrate the driving motor 51 and the guide rail 54 into an integrated structure, and then the integrated structure may be fixed to the cabinet 1, thereby greatly improving the assembly efficiency of the air conditioning indoor unit 100.
In the specific example shown in fig. 11, the guide rail 54 includes a cylinder 543 and a connection plate 544, the cylinder 543 is formed in a cylindrical shape, and the drive rack 53 may be provided in the cylinder 543 in a penetrating manner. The cylinder 543 is provided with a avoiding notch 543a to expose the mating teeth of the driving rack 53, and the driving gear 52 can be engaged with the driving rack 53 through the avoiding notch 543 a. The connection plate 544 is provided on the outer peripheral wall of the cylinder 543, and the connection plate 544 is provided with a fixing hole 544a. The fixed bracket 6 is provided with an assembly groove 6a, and the driving motor 51 is arranged in the assembly groove 6a and connected with the fixed bracket 6 through screws. The fixing bracket 6 is provided with screw columns 61 connected with the connecting plates 544, the fixing holes 544a are opposite to the corresponding screw columns 61, and screws can penetrate through the fixing holes 544a to be in threaded fit with the screw columns 61, so that the guide rail 54 can be fixed on the fixing bracket 6. Alternatively, the cylinder 543 and the connecting plate 544 may be formed as an integral part, so that the structural design of the guide rail 54 is simpler, the assembly efficiency is improved, and the structural firmness of the guide rail 54 is improved.
As shown in fig. 14-18, in some embodiments of the present invention, the drive rack 53 may include a stationary body 531 and a toothed portion 532, wherein the stationary body 531 may be injection molded or cast, and mating teeth may then be provided on the stationary body 531 to form the toothed portion 532, the toothed portion 532 being in meshing engagement with the drive gear 52. Thus, by the above arrangement, the structure of the driving rack 53 can be made simpler, and the processing efficiency of the driving rack 53 can be improved.
Alternatively, the horizontal cross-sections of the fixing body 531 and the tooth 532 may be formed in a circular shape, the horizontal cross-sections of the fixing body 531 and the tooth 532 may be formed in an elliptical shape, the horizontal cross-sections of the fixing body 531 and the tooth 532 may be formed in a square shape, and the horizontal cross-sections of the fixing body 531 and the tooth 532 may be formed in a polygonal shape. The shape of the horizontal cross section of the fixing body 531 and the tooth 532 may also constitute an irregular shape. For example, as shown in fig. 16, the horizontal cross section of the fixing body 531 may be formed in a direction, and the horizontal cross section of the tooth 532 may be formed in a circular arc shape. Therefore, through the arrangement, the diversified design of the driving racks 53 can be realized, the driving racks 53 with different shapes can be selected according to actual use requirements, and the use flexibility of users can be improved.
The air conditioning indoor unit 100 according to the present invention will be described in detail with reference to two specific embodiments, and the air conditioning indoor unit 100 can cool and heat indoor air. It is to be understood that the following description is exemplary only and is not intended to limit the invention in any way.
Embodiment one:
as shown in fig. 1 to 4, an air conditioning indoor unit 100 according to an embodiment of the present invention includes: a casing 1, an indoor heat exchanger 2, an indoor fan 3, a sliding door 4 and a driving assembly 5.
As shown in fig. 3, the front side of the casing 1 may be provided with a front side air outlet 1a, the casing 1 may be provided with an air inlet 1b, and the indoor heat exchanger 2 and the indoor fan 3 may be both disposed in the casing 1. The indoor fan 3 may include a centrifugal fan 31 and an upper fan 32. The casing 1 may be provided therein with a first air duct 11 and a second air duct 12, the first air duct 11 may extend in a front-rear direction, the first air duct 11 may supply air toward the front-side air outlet 1a, the second air duct 12 may include an annular air guiding portion 12a and an extending air guiding portion 12b communicating with the annular air guiding portion 12a, the annular air guiding portion 12a may be sleeved outside the first air duct 11 and may supply air toward the front-side air outlet 1a, and the extending air guiding portion 12b may extend downward from the annular air guiding portion 12 a. The centrifugal fan 31 may be disposed in the extended air guide 12b and the centrifugal fan 31 may be located below the front air outlet 1a, and the upper fan 32 may be disposed in the first air duct 11.
As shown in fig. 3, the indoor heat exchanger 2 is located at the rear side of the centrifugal fan 31 and the upper fan 32, the indoor heat exchanger 2 may be vertically extended in the up-down direction, the lower end of the indoor heat exchanger 2 is extended below the centrifugal fan 31, and the top end of the indoor heat exchanger 2 is extended above the annular air guide 12 a.
As shown in fig. 4, the sliding door 4 is provided on the front side of the casing 1 and the sliding door 4 is movable in the longitudinal direction of the casing 1 (up-down direction as shown in fig. 1). The sliding door 4 may be moved to the front of the front air outlet 1a to close the front air outlet 1a, and the sliding door 4 may be moved to the lower side of the front air outlet 1a to open the front air outlet 1a. A driving assembly 5 may be provided on the cabinet 1 and the driving assembly 5 may be engaged with the sliding door 4 to drive the sliding door 4 to move up and down. The front surface of the cabinet 1 may be provided with a receiving groove 1c, and the front air outlet 1a may be located in the receiving groove 1c, and the sliding door 4 may be movably provided in the receiving groove 1 c.
As shown in fig. 4, the driving assembly 5 may include: the driving motor 51, the driving gear 52 and the driving rack 53, the driving motor 51 may be fixed on the casing 1, the driving gear 52 may be connected with the driving motor 51 to be driven to rotate by the driving motor 51, the driving rack 53 may be fixed on the inner wall of the sliding door 4 and the driving rack 53 may be engaged with the driving gear 52.
As shown in fig. 4 to 6, a fixing portion 13 engaged with the driving motor 51 may be provided on the front sidewall of the casing 1. Wherein the fixing portion 13 includes a fixing stage 131 recessed rearward with respect to the front side wall of the casing 1, and a first groove 133 and a second groove 134 extending in the front-rear direction. Wherein, the end surfaces of the fixing table 131 and the first groove body 133 are both formed in a circular arc shape, the fixing table 131 is disposed at the radial outer side of the first groove body 133, and two first mounting holes 132 are disposed on the fixing table 131 at intervals in the circumferential direction thereof. The end surface of the second groove 134 is formed in a square shape, the second groove 134 communicates with the first groove 133, and the first groove 133 and the second groove 134 each extend rearward from the fixing base 131.
As shown in fig. 6, the driving motor 51 includes a motor housing 511, the motor housing 511 includes a main body portion 511a and a limiting portion 511b, the main body portion 511a is connected with the limiting portion 511b, the outer contour of the main body portion 511a is identical to that of the first groove body 133, the outer contour of the limiting portion 511b is identical to that of the second groove body 134, two fixing lugs 512 distributed at intervals are provided on the main body portion 511a, and a second mounting hole 512a opposite to the corresponding first mounting hole 132 is provided on each fixing lug 512.
When the driving motor 51 is assembled with the casing 1, the main body portion 511a may be inserted into the first groove 133, and the limiting portion 511b may be inserted into the second groove 134, so that the driving motor 51 may be prevented from defining the casing 1 to rotate, and a good pre-positioning effect may be achieved. After the main body portion 511a and the limiting portion 511b are mounted in place, the second mounting holes 512a on the two fixing lugs 512 are opposite to the corresponding first mounting holes 132, and screws can be respectively inserted through the corresponding second mounting holes 512a and the corresponding first mounting holes 132 to fix the driving motor 51 on the casing 1.
As shown in fig. 7 to 9, the driving assembly 5 may further include a guide rail 54, the guide rail 54 may be fixed to the front surface of the cabinet 1, and the driving rack 53 may be slidably provided on the guide rail 54. The guide rail 54 includes a body portion 541 and a guide groove 542, the guide groove 542 being provided on a side wall (a front side wall as shown in fig. 9) of the body portion 541 near the drive rack 53, the guide groove 542 extending in a moving direction (up-down direction as shown in fig. 8) of the drive rack 53. When the drive rack 53 is engaged with the guide rail 54, at least a portion of the drive rack 53 is positioned within the guide slot 542 and slidingly engages the guide slot 542.
Specifically, when the front air outlet 1a needs to be opened, the driving assembly 5 may drive the sliding door 4 to move downward relative to the casing 1 so that the front air outlet 1a is exposed, and the heat exchange air flow may be discharged through the front air outlet 1a. When the front air outlet 1a needs to be closed, the driving assembly 5 can drive the sliding door 4 to move upwards relative to the casing 1, and the sliding door 4 can move to the front of the front air outlet 1a to shield the front air outlet 1a.
When the temperature difference between the indoor environment temperature and the ideal temperature required by the user is large, the centrifugal fan 31 and the upper fan 32 can be controlled to work simultaneously, the centrifugal fan 31 can guide the first air flow to circulate in the extension air guide part 12b and the annular air guide part 12a in sequence, the upper fan 32 can guide the second air flow to circulate in the first air duct 11 along the back-to-front direction, the first air flow and the second air flow can mix flow at the front side of the upper fan 32 and then can be discharged through the front side air outlet 1a, so that the air output of the indoor fan 3 can be increased, and the heat exchange efficiency of the indoor unit 100 of the air conditioner can be improved. When the temperature difference between the indoor ambient temperature and the desired temperature required by the user is small, one of the centrifugal fan 31 and the upper fan 32 may be selected to participate in the air supply alone.
Embodiment two:
unlike the first embodiment, the guide rail 54 of the driving assembly 5 is formed into a hollow tubular structure, the guide rail 54 may be sleeved on the driving rack 53, the guide rail 54 may be provided with a avoiding notch 543a, and the driving gear 52 may be engaged with the driving rack 53 through the avoiding notch 543 a. The indoor unit 100 may further include a fixing bracket 6, the driving motor 51 and the guide rail 54 may be respectively fixed to the fixing bracket 6, and the fixing bracket 6 may be fixed to the cabinet 1.
As shown in fig. 11, the guide rail 54 includes a cylindrical body 543 and a connection plate 544, the cylindrical body 543 is formed in a cylindrical shape, the driving rack 53 is inserted into the cylindrical body 543, the cylindrical body 543 is provided with a avoiding notch 543a to expose the mating teeth of the driving rack 53, and the driving gear 52 can be engaged with the driving rack 53 through the avoiding notch 543 a. The connection plate 544 is provided on the outer peripheral wall of the cylinder 543, and the connection plate 544 is provided with a fixing hole 544a. The fixed bracket 6 is provided with an assembly groove 6a, and the driving motor 51 is arranged in the assembly groove 6a and connected with the fixed bracket 6 through screws. The fixing bracket 6 is provided with screw columns 61 connected with the connecting plates 544, the fixing holes 544a are opposite to the corresponding screw columns 61, and screws can penetrate through the fixing holes 544a to be in threaded fit with the screw columns 61, so that the guide rail 54 can be fixed on the fixing bracket 6. The fixing bracket 6 can integrate the driving motor 51 and the guide rail 54 into an integral structure, and then can fix the integral structure on the casing 1, thereby greatly improving the assembly efficiency of the air conditioner indoor unit 100.
As shown in fig. 19, according to the control method of the air conditioning indoor unit 100 according to the embodiment of the present invention, the air conditioning indoor unit 100 is the air conditioning indoor unit 100 according to the above embodiment of the present invention, and the control method of the air conditioning indoor unit 100 may include:
The indoor environment temperature can be detected, and whether the indoor environment temperature reaches the set temperature or not can be judged. When the difference Δt between the indoor environment temperature and the set temperature is greater than the first set difference Δt1, the sliding door 4 can be controlled to move to a state of completely opening the front side air outlet 1a, and the rotational speed of the indoor fan 3 can be controlled to be the set rotational speed, so that the circulation speed of the air flow can be increased, the air output of the front side air outlet 1a can be further improved, the adjustment speed of the indoor temperature can be increased, the difference between the indoor environment temperature and the set temperature can be rapidly reduced, and the use comfort of a user can be improved. Alternatively, Δt1 may be 15 ℃. When the difference between the indoor ambient temperature and the set temperature exceeds 15 deg.c, the rotation speed of the indoor fan 3 may be controlled to 500 rpm.
When the difference Δt between the indoor environment temperature and the set temperature is smaller than the second set difference Δt2, the temperature difference between the indoor environment temperature and the set temperature is smaller, and at this time, the rotation speed of the indoor fan 3 can be reduced, thereby reducing the energy consumption of the air conditioner indoor unit 100 while satisfying the user's use requirement. Alternatively, Δt2 may be 5 ℃. When the difference between the indoor environment temperature and the set temperature is less than 5 ℃, the rotating speed of the indoor fan 3 can be controlled to be 200 rpm
According to the control method of the air conditioner indoor unit 100, the operation comparison method can not only improve the refrigerating and heating efficiency of the air conditioner indoor unit 100, but also reduce the energy consumption of the air conditioner indoor unit 100 while meeting the use requirements of users, and has extremely strong practical performance.
According to some embodiments of the present invention, when a target object is detected on the front side of the casing 1, the sliding door 4 can be controlled to move to partially shield the front side air outlet 1a, so that the heat exchange air flow blown out from the front side air outlet 1a can be prevented from directly blowing to an indoor user to generate uncomfortable feeling, and the use comfort of the user is greatly improved.
For example, a monitoring device may be provided on the front surface of the air conditioning indoor unit 100, and the monitoring device may monitor whether or not a target object is moving in front of the air conditioning indoor unit 100. If the monitoring device monitors that the target object appears on the front side of the indoor unit 100, the monitoring device can send height data of the target object to the control main board, and the control main board can control the driving component 5 to drive the sliding door 4 to move upwards according to the received data, so that the sliding door 4 shields a part of the front air outlet 1a below the top of the target object, and discomfort caused by direct blowing of heat exchange air flow blown from the front air outlet 1a to the target object can be prevented. When the target object disappears from the front side of the air conditioning indoor unit 100, the monitoring device may send a signal to the control main board, and the control main board may control the driving assembly 5 to drive the sliding door 4 to move downward so as to fully open the front side air outlet 1a. Thus, through the above arrangement, the automatic control of the sliding door 4 can be realized, so that not only the use comfort of a user can be improved, but also the product science and technology sense of the air conditioner indoor unit 100 can be greatly improved.
According to some embodiments of the present invention, when the difference Δt between the indoor ambient temperature and the set temperature is smaller than the second set difference Δt2, the sliding door 4 may be controlled to be moved to partially block the front side air outlet 1a, and simultaneously the rotation speed of the indoor fan 3 may be reduced and the operation frequency of the compressor may be reduced, thereby reducing the energy consumption of the air conditioner indoor unit 100 while satisfying the user's use requirement. Further, when the sliding door 4 moves to partially block the front side air outlet 1a, the operating load of the indoor fan 3 can be reduced and the operating noise of the air conditioning indoor unit 100 can be reduced by controlling the rotation speed of the indoor fan 3 to be reduced.
In some embodiments of the present invention, when the sliding door 4 moves to partially block the front side air outlet 1a, the control method of the air conditioning indoor unit 100 may further include: when the sliding door 4 moves to cover the air outlet area of the front side air outlet 1a by no more than one third, the rotation speed of the indoor fan 3 can be controlled to be reduced to the first rotation speed, and when the sliding door 4 continues to move to cover the air outlet area of the front side air outlet 1a by more than one third and not more than one half, the rotation speed of the indoor fan 3 can be controlled to be reduced to the second rotation speed, wherein the second rotation speed can be smaller than the first rotation speed.
Specifically, the ratio S of the area of the front air outlet 1a blocked by the sliding door 4 to the air outlet area of the front air outlet 1a can be detected, and when S is less than or equal to 1/3, the rotation speed of the indoor fan 3 can be controlled to be reduced to the first rotation speed; when S is more than 1/3 and less than or equal to 1/2, the rotating speed of the indoor fan 3 can be controlled to be reduced to a second rotating speed, so that the current indoor temperature can be kept, and the effect of no wind sense can be realized. Alternatively, the first rotational speed may be 300 rpm and the second rotational speed may be 150 rpm.
Thus, through the above arrangement, the energy consumption of the air conditioning indoor unit 100 can be reduced while the user's use requirement is satisfied, and the working load of the indoor fan 3 can be reduced, thereby reducing the working noise of the air conditioning indoor unit 100. But also can realize the effect of no wind sense, thereby greatly improving the comfort level of users.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, 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 will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. An air conditioning indoor unit, comprising:
the front side of the shell is provided with a front side air outlet, and the shell is provided with an air inlet;
the indoor heat exchanger is arranged in the shell;
the indoor fan is arranged in the shell;
the sliding door is movably arranged on the front side of the machine shell along the length direction of the machine shell, can move to the front of the front air outlet to close the front air outlet, and can move to the lower part of the front air outlet to open the front air outlet;
the driving component is arranged on the shell and matched with the sliding door to drive the sliding door to move up and down;
the indoor fan is one of a centrifugal fan, a cross flow fan and an inclined flow fan;
a first air duct and a second air duct are arranged in the shell, the first air duct extends in the front-rear direction, and the first air duct supplies air towards the front air outlet;
The second air duct comprises an annular air guide part and an extending air guide part communicated with the annular air guide part, the annular air guide part is sleeved outside the first air duct and supplies air towards the front air outlet, the extending air guide part extends downwards from the annular air guide part, and the indoor fan is arranged in the extending air guide part and is positioned below the front air outlet;
the front surface of the shell is provided with a containing groove, and the sliding door is movably arranged in the containing groove.
2. The indoor unit of claim 1, wherein the indoor fan is located directly in front of the indoor heat exchanger.
3. The indoor unit of claim 1, wherein the indoor unit further comprises an upper fan disposed within the first duct.
4. The indoor unit of claim 1, wherein the driving assembly comprises:
the driving motor is fixed on the shell;
the driving gear is connected with the driving motor so as to be driven by the driving motor to rotate;
the driving rack is fixed on the inner wall of the sliding door and meshed with the driving gear.
5. The indoor unit of claim 4, wherein the drive assembly further comprises a rail secured to a front surface of the housing, the drive rack being slidably disposed on the rail.
6. The indoor unit of claim 5, wherein the guide rail is formed in a hollow tubular structure, the guide rail is sleeved on the rack, an avoidance gap is formed in the guide rail, and the driving gear is meshed with the driving rack through the avoidance gap.
7. The indoor unit of claim 6, further comprising a fixing bracket, wherein the driving motor and the guide rail are respectively fixed to the fixing bracket, and wherein the fixing bracket is fixed to the cabinet.
8. The indoor unit of claim 1, wherein the front side air outlet is located in the receiving tank.
9. A control method of an air conditioning indoor unit according to any one of claims 1 to 8, comprising the steps of:
detecting the indoor environment temperature and judging whether the indoor environment temperature reaches a set temperature or not;
When the difference between the indoor environment temperature and the set temperature is larger than a first set difference, controlling the sliding door to move to a state of completely opening the front air outlet, and controlling the rotating speed of the indoor fan to be a set rotating speed;
and when the difference value between the indoor environment temperature and the set temperature is smaller than the second set difference value, reducing the rotating speed of the indoor fan.
10. The control method of an indoor unit of an air conditioner according to claim 9, wherein the sliding door is controlled to move to partially block the front air outlet when a target object is detected on the front side of the cabinet.
11. The method according to claim 9, wherein when the difference between the indoor environment temperature and the set temperature is smaller than a second set difference, the sliding door is controlled to move to partially block the front air outlet, the rotational speed of the indoor fan is reduced, and the operation frequency of the compressor is reduced.
12. The control method of an air conditioner indoor unit according to claim 11, wherein when the sliding door is moved to partially block the front side air outlet, the control method further comprises the steps of:
when the sliding door moves to a position where the air outlet area of the front air outlet is not more than one third, controlling the rotating speed of the indoor fan to be reduced to a first rotating speed;
When the sliding door continues to move to cover the air outlet area of the front air outlet, which is more than one third and not more than one half, the rotating speed of the indoor fan is controlled to be reduced to a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed.
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