CN111911999A - Air conditioner and method for controlling air outlet direction - Google Patents

Air conditioner and method for controlling air outlet direction Download PDF

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Publication number
CN111911999A
CN111911999A CN202010443423.6A CN202010443423A CN111911999A CN 111911999 A CN111911999 A CN 111911999A CN 202010443423 A CN202010443423 A CN 202010443423A CN 111911999 A CN111911999 A CN 111911999A
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China
Prior art keywords
air outlet
type
grating
pulse
determining
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Granted
Application number
CN202010443423.6A
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Chinese (zh)
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CN111911999B (en
Inventor
孙合庆
曲明伟
张江
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202010443423.6A priority Critical patent/CN111911999B/en
Publication of CN111911999A publication Critical patent/CN111911999A/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
    • 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
    • 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
    • F24F13/08—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
    • F24F2013/1446—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 with gearings
    • 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)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a method for controlling an air outlet direction, wherein a controller of the air conditioner determines pulse information according to a rotation path of a zero point of a grating fluted disc when a rotary air outlet assembly completes a preset rotation action, and the pulse information is generated by the fact that grating teeth of the grating fluted disc intermittently shield a photoelectric switch; determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction; the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the front view of the shell, so that the adjustable range of the air outlet direction is wider, the air outlet direction is accurately controlled, and the refrigerating and heating speed of the whole room is improved.

Description

Air conditioner and method for controlling air outlet direction
Technical Field
The application relates to the technical field of air conditioner control, in particular to an air conditioner and a method for controlling an air outlet direction.
Background
The existing air conditioner is a necessary household appliance, has a refrigerating or heating function, and can refrigerate or heat an area within a certain interval range after the air conditioner is started under normal conditions. However, when the user needs to blow air to a fixed position, the air direction of the air conditioner needs to be adjusted, for example, by adjusting the up-down wind or the left-right wind.
The air conditioner disclosed by the prior art controls the direction change of air at the air outlet of the air conditioner by changing the swing blade angle of the air outlet of the air conditioner in the operation process, the air outlet control mode is only limited in a small angle range, and the accuracy of air outlet direction control is not high.
How to provide an air conditioner that air-out direction adjustable range is wider and accurate control air-out direction, improve whole room refrigeration heating speed is the technical problem that remains to be solved at present.
Disclosure of Invention
The embodiment of the invention provides an air conditioner, which is used for solving the technical problems that the adjustable range of the air outlet direction is too small and the control accuracy is not high in the prior art.
In some embodiments of the present application, the air conditioner includes:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, and is used for rotating around a rotation center relative to the shell around the indoor heat exchanger so as to enable the air outlet to rotate to exhaust air, wherein the grating fluted disc is fixed relative to the air outlet;
the controller is configured to include:
determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch;
determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction;
the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the shell in front of the front view.
In some embodiments of the present application, the control appliance is configured to:
if the rotating path does not pass through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between a first position when the rotating action starts and a second position when the rotating action ends;
and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position.
In some embodiments of the present application, the controller is further specifically configured to:
determining angle information of the air outlet according to the pulse information and a preset relation table;
determining the direction of the air outlet according to the angle information and the direction;
the preset relation table is determined according to the corresponding relation between each pulse type and the angle rotated by the grating fluted disc, and the pulse types comprise a first type, a second type, a third type, a fourth type and a fifth type.
In some embodiments of the present application, the controller is further specifically configured to:
determining the product of each pulse quantity in the pulse information and the corresponding angle;
determining the angle information from the sum of the products;
wherein the grating teeth comprise first grating teeth on one side of a connecting line of the zero point and the rotation center and second grating teeth on the other side of the connecting line, the pulses generated by the photoelectric switch through the first interval between the first type of grating teeth and the second type of grating teeth are the pulses of the first type, the pulses generated by the first type of grating teeth via the opto-electronic switch are of the second type, the pulses generated by the opto-electronic switch at the second intervals between the grating teeth of the first type are of the third type, the pulses generated by the photoelectric switch in the third interval between the second type of grating teeth are the fourth type of pulses, the pulse generated by the second type of grating tooth passing through the photoelectric switch is the fifth type of pulse, and the first interval is different from the second interval and the third interval.
In some embodiments of the present application, the controller is further specifically configured to:
receiving a target air outlet direction input by a user;
and adjusting the air outlet direction according to the direction and the angle of the target air outlet direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air outlet direction.
Corresponding to the air conditioner in the embodiment of the present application, the embodiment of the present application further provides a method for controlling an air outlet direction, which is applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a rotary air outlet assembly and a controller, wherein the rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, and is used for rotating around a rotation center relative to a shell around the indoor heat exchanger to enable the air outlet to rotate for air outlet, and the grating fluted disc is fixed relative to the air outlet.
In some embodiments of the present application, the method comprises:
determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch;
determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction;
the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the shell in front of the front view.
In some embodiments of the present application, determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action specifically includes:
if the rotating path does not pass through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between a first position when the rotating action starts and a second position when the rotating action ends;
and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position.
In some embodiments of the present application, determining an air outlet direction of the air outlet according to the pulse information and a direction in which the zero point passes through the photoelectric switch last time specifically includes:
determining angle information of the air outlet according to the pulse information and a preset relation table;
determining the direction of the air outlet according to the angle information and the direction;
the preset relation table is determined according to the corresponding relation between each pulse type and the angle rotated by the grating fluted disc, and the pulse types comprise a first type, a second type, a third type, a fourth type and a fifth type.
In some embodiments of the present application, the determining the angle information of the air outlet according to the pulse information and a preset relationship table specifically includes:
determining the product of each pulse quantity in the pulse information and the corresponding angle;
determining the angle information from the sum of the products;
wherein the grating teeth comprise first grating teeth on one side of a connecting line of the zero point and the rotation center and second grating teeth on the other side of the connecting line, the pulses generated by the photoelectric switch through the first interval between the first type of grating teeth and the second type of grating teeth are the pulses of the first type, the pulses generated by the first type of grating teeth via the opto-electronic switch are of the second type, the pulses generated by the opto-electronic switch at the second intervals between the grating teeth of the first type are of the third type, the pulses generated by the photoelectric switch in the third interval between the second type of grating teeth are the fourth type of pulses, the pulse generated by the second type of grating tooth passing through the photoelectric switch is the fifth type of pulse, and the first interval is different from the second interval and the third interval.
In some embodiments of this application, according to air outlet position control the air-out direction of rotatory air-out subassembly specifically is:
receiving a target air outlet direction input by a user;
and adjusting the air outlet direction according to the direction and the angle of the target air outlet direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air outlet direction.
By applying the technical scheme, the rotary air outlet assembly comprising the grating fluted disc, the photoelectric switch and the air outlet is arranged in the air conditioner and used for rotating around a rotation center relative to the shell around the indoor heat exchanger so as to enable the air outlet to rotate for air outlet, and the grating fluted disc is fixed relative to the air outlet; determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch; determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction; the zero point and the position of the central line of the air outlet when the center of the photoelectric switch is aligned are zero positions, the zero positions correspond to the front position of the shell, the air sweeping range of the air outlet is expanded through the rotary air outlet assembly, pulse signals generated by the photoelectric switch are intermittently shielded through grating teeth of a grating fluted disc to determine the direction of the air outlet, the accuracy of controlling the air outlet direction is improved, the air outlet direction is accurately controlled while the refrigerating and heating speed of the whole room is improved, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a circuit diagram schematically showing the configuration of an air conditioner according to the embodiment.
Fig. 2 is a schematic structural view illustrating a rotary air outlet assembly of an embodiment.
Fig. 3 is a schematic view showing a center line position angle coordinate system of the outlet of the embodiment.
FIG. 4 is a schematic diagram illustrating an embodiment of a grating fluted disc structure.
FIG. 5 is a partially enlarged structural diagram of a grating fluted disc of an embodiment.
Fig. 6 is a schematic time domain diagram of a pulse signal showing an embodiment.
Fig. 7 is a schematic flow chart illustrating a method for controlling an air outlet direction according to an embodiment of the present invention.
Description of the reference symbols
1: an air conditioner; 2: an outdoor unit; 3: an indoor unit; 10: a refrigerant circuit; 11: a compressor; 12: a four-way valve; 13: an outdoor heat exchanger;
14: an expansion valve; 16: an indoor heat exchanger; 21: an outdoor fan; 31: an indoor fan; 32: an indoor temperature sensor; 33: indoor heat exchanger temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
Fig. 1 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of executing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected by a connecting pipe 4 to form a refrigerant circuit 10 in which a refrigerant circulates. The refrigerant circuit 10 includes a compressor 11, an outdoor heat exchanger 13, an expansion valve 14, an accumulator 15, and an indoor heat exchanger 16. Among them, the indoor heat exchanger 16 and the outdoor heat exchanger 13 operate as a condenser or an evaporator. The compressor 11 sucks the refrigerant from the suction port, and discharges the refrigerant compressed therein to the indoor heat exchanger 16 from the discharge port. The compressor 11 is an inverter compressor with variable capacity that performs rotational speed control by an inverter, and the four-way valve 12 switches between heating and cooling.
The outdoor heat exchanger 13 has a first inlet and a second outlet for allowing the refrigerant to flow between the refrigerant and the suction port of the compressor 11 through the accumulator 15, and the refrigerant flows between the refrigerant and the expansion valve 14. The outdoor heat exchanger 13 exchanges heat between the outdoor air and the refrigerant flowing through a heat transfer pipe (not shown) connected between the second inlet and the first inlet of the outdoor heat exchanger 13.
The expansion valve 14 is disposed between the outdoor heat exchanger 13 and the indoor heat exchanger 16. The expansion valve 14 has a function of expanding and decompressing the refrigerant flowing between the outdoor heat exchanger 13 and the indoor heat exchanger 16. The expansion valve 14 is configured to be capable of changing the opening degree, and by decreasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is increased, and by increasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is decreased. The expansion valve 14 expands and decompresses the refrigerant flowing from the indoor heat exchanger 16 to the outdoor heat exchanger 13 during the heating operation. Further, even if the states of other devices installed in the refrigerant circuit 10 do not change, when the opening degree of the expansion valve 14 changes, the flow rate of the refrigerant flowing in the refrigerant circuit 10 changes.
The indoor heat exchanger 16 has a second inlet and outlet for allowing the liquid refrigerant to flow between the expansion valve 14 and the indoor heat exchanger, and has a first inlet and outlet for allowing the gas refrigerant to flow between the compressor 11 and the discharge port. The indoor heat exchanger 16 exchanges heat between the refrigerant flowing through the heat transfer pipe connected between the second inlet and the first inlet and the second outlet of the indoor heat exchanger 16 and the indoor air.
An accumulator 15 is disposed between the outdoor heat exchanger 13 and the suction port of the compressor 11. In the accumulator 15, the refrigerant flowing from the outdoor heat exchanger 13 to the compressor 11 is separated into a gas refrigerant and a liquid refrigerant. Then, the gas refrigerant is mainly supplied from the accumulator 15 to the suction port of the compressor 11.
The outdoor unit 2 further includes an outdoor fan 21, and the outdoor fan 21 generates an airflow of outdoor air passing through the outdoor heat exchanger 13 to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the outdoor air. The outdoor fan 21 is driven by an outdoor fan motor 21A capable of changing the rotation speed. The indoor unit 3 further includes an indoor fan 31, and the indoor fan 31 generates an airflow of the indoor air passing through the indoor heat exchanger 16 to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the indoor air. The indoor fan 31 is driven by an indoor fan motor 31A whose rotation speed can be changed.
The embodiment of the invention provides an air conditioner, which comprises a rotary air outlet assembly, wherein the wind sweeping angle is 360 degrees, the position of the central line of an air outlet is used for replacing the position of the air outlet of the air conditioner, and when the air outlet sweeps wind at 360 degrees, an air conditioner controller can calculate and record the position of the air outlet. Therefore, when the air conditioner receives the instruction of the target air outlet direction input by the user, the controller rotates the air outlet to the target air outlet direction according to the instruction.
The rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, grating teeth are formed on the grating fluted disc, the grating teeth are distributed along the circumference at intervals, and the center of the distributed circumference is coincident with or coaxial with the rotation center of the air outlet of the air conditioner. The grating fluted disc and the air outlet of the air conditioner rotate around the same rotation center under the driving of the driving mechanism. The grating fluted disc is provided with a zero point, the position of the zero point and the center line of the air outlet when the center of the photoelectric switch is aligned is a zero point position, and the zero point position corresponds to the front position of the front view of the shell of the air conditioner internal heat exchanger.
The grating teeth intermittently shield the photoelectric switch to generate a series of pulse signals with a certain pulse width. And calculating the rotation angle of the air outlet according to the number of the pulse signals, and further calculating the direction of the air outlet.
As shown in fig. 2, the rotary air outlet assembly can rotate around the rotation center relative to the whole air conditioner under the driving of the driving mechanism. Therefore, the air outlet can rotate 360 degrees to sweep air, and the air outlet can rotate 360 degrees to sweep air for users. In the scheme of the invention, the direction of the central line of the air outlet is used for replacing the direction of the air outlet. The air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet. The grating fluted disc is fixed relative to the air outlet, and the grating fluted disc and the air outlet rotate around the same rotation center under the driving of the driving mechanism.
As shown in fig. 3, when the central line of the air outlet is 0 °, it indicates that the air outlet is located at the center of the front view of the enclosure, and the zero point of the corresponding grating fluted disc is at the zero point. When the air outlet rotates, the included angle b between the central line and the 0-degree line can represent the direction of the air outlet. The central line of the air outlet is positioned on the right side of the 0-degree line, and the included angle is a positive value; the central line of the air outlet is on the left side of the 0-degree line, and the included angle is a negative value. Namely, when the air outlet is arranged at the right side, the angle is more than 180 degrees and more than 0 degree; namely, when the air outlet is arranged at the left side, the angle is more than 0 degree and b is more than-180 degrees. The position of the tuyere can be determined only by determining the included angle b.
As shown in fig. 3 and 4, the grating fluted disc is formed with grating teeth at intervals along the circumference (the circumference is concentric with the rotation center), and the grating teeth have certain width, thickness and height. When the zero point of the grating fluted disc is aligned with the center of the photoelectric switch, the air outlet is positioned at the center of the front view of the machine shell, namely the central line of the air outlet is positioned at the line position of 0 degree. The boundary line passes through a zero point and a rotation center, the boundary line is used as a boundary, and the size of the grating teeth on one side is as follows: the width (arc length) is L4, and the interval (arc length) is L3; grating tooth size on the other side: the widths (arc lengths) were all L1 and the spacings (arc lengths) were all L2. It is important to note that a space L0 is formed between the grating teeth of the two sizes, and the center of the space coincides with the zero point position. And the value of the spacing L0 must be different (by more than 0.5 mm) from that of L3 and L2.
As shown in fig. 5, the grating teeth intermittently block the photoelectric switch, generating a series of pulse signals with a certain pulse width. The grating teeth produce a high level signal 1 and the grating spaces produce a low level signal 0. Because the air outlet rotates at a constant speed, the signal pulse width is correspondingly in direct proportion to the width of the grating teeth and the interval width. For example, interval L0 corresponds to a pulse width of w. And the rotation angle can be calculated when the grating fluted disc rotates by 1 grating tooth or interval. Taking the grating teeth rotating by the arc length L1 as an example, the rotation angle a1 of the air outlet is equal to (L1 × 360 °)/M every time 1 grating tooth L1 is rotated. The circumference M is the circumference of the circle in which the arc L1 lies. The corresponding a0, a2, a3 and a4 may be calculated as well. Meanwhile, when the central line of the air outlet is in a certain direction, in the signal time domain diagram, the number of pulse widths (i.e. the number of rotated grating teeth or intervals) relative to the boundary (zero point position) at this time can be calculated and stored as a preset relation table by the air conditioner controller, as shown in the following table:
grating teeth and space widths Corresponding pulse width Corresponding angle Number of pulse widths relative to zero
L0 w a0 1
L1 D a1 n1
L2 Y a2 n2
L3 y a3 n3
L4 d a4 n4
And judging that the grating fluted disc reaches zero point by identifying the pulse width w, namely the pulse width w is a mark of the air outlet reaching the center of the shell. In order to reduce the accumulated error, when the air outlet passes through the zero point position in the rotating process, the current running position is calibrated again to be the zero point position. The specification is as follows: when the zero point of the grating fluted disc in the interval L0 passes through the photoelectric switch anticlockwise, the corresponding included angle b is a positive value, the air outlet is positioned at the right side of the boundary line, and the absolute value of the included angle b is a0/2+ n 1a 1+ n2 a 2; when the zero point of the grating fluted disc in the interval L0 passes through the photoelectric switch clockwise, the corresponding included angle b is a negative value, the air outlet is positioned at the left side of the boundary line, and the absolute value of the included angle b is a0/2+ n3 a3+ n4 a4(n1, n2, n3 and n4 are the number of the relative zero points, but not the absolute number). And (5) calculating an included angle b, and determining the direction of the air outlet.
The air outlet direction confirming step is as follows:
step one, the air outlet receives a rotation instruction and starts to rotate.
And step two, the controller stores the number n of pulses in the rotation process, and the times and the direction of passing through the zero position.
And step three, confirming that the rotation of the air outlet is finished.
If the air outlet passes through the zero crossing point position in the rotating process, the position is marked with zero again once, and the relative number of pulses in the rotating record is extracted to calculate the included angle b; and if the air outlet does not pass through the zero position in the rotation process, calculating the included angle b according to the number of the pulses recorded between the position information of the air outlet before rotation and the position information of the air outlet after rotation.
Judging the direction of the zero point of the grating fluted disc passing through the photoelectric switch for the last time;
step six, if the direction is anticlockwise, the air outlet is in the right half area, and the included angle is b; if the air outlet is clockwise, the air outlet is in the left half area, and the included angle is b.
And seventhly, determining the direction of the air outlet according to the included angle b and the direction.
Through applying above technical scheme, including rotatory air-out subassembly in the air conditioner, rotatory air-out subassembly includes grating fluted disc, photoelectric switch and air outlet for around the center of rotation for the casing rotary motion around the indoor heat exchanger makes the air outlet rotatory air-out, the grating fluted disc is fixed for the air outlet, the controller is configured to, includes: determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch; determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction; the zero point and the position of the central line of the air outlet when the center of the photoelectric switch is aligned are zero positions, the zero positions correspond to the front position of the shell, the air sweeping range of the air outlet is expanded through the rotary air outlet assembly, pulse signals generated by the photoelectric switch are intermittently shielded through grating teeth of a grating fluted disc to determine the direction of the air outlet, the accuracy of controlling the air outlet direction is improved, the air outlet direction is accurately controlled while the refrigerating and heating speed of the whole room is improved, and the user experience is improved.
Corresponding to the air conditioner in the embodiment of the present application, the embodiment of the present application further provides a method for controlling an air outlet direction, which is applied to an air conditioner including a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a rotary air outlet assembly and a controller, where the rotary air outlet assembly includes a grating fluted disc, a photoelectric switch and an air outlet, and is configured to rotate around a rotation center with respect to a housing around the indoor heat exchanger, so that the air outlet rotates to outlet air, the grating fluted disc is fixed with respect to the air outlet, as shown in fig. 7, and the method includes the following steps:
step S701, determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch.
In this step, the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the casing in front of the front view.
In order to determine accurate pulse information and reduce an accumulated error, in a preferred embodiment of the present application, the determining the pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action specifically includes:
if the rotating path does not pass through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between a first position when the rotating action starts and a second position when the rotating action ends;
and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position.
In this step, it is first determined whether the rotation path of the zero point of the grating fluted disc passes through the zero point position, and if the rotation path does not pass through the zero point position, the pulse information is determined according to the pulse type and the corresponding pulse number recorded between the first position when the rotation action starts and the second position when the rotation action ends; and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position in order to reduce the accumulated error.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other ways of determining the pulse information according to the rotation path all belong to the protection scope of the present application.
Step S702, determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction.
In this step, the direction in which the zero point passes through the photoelectric switch for the last time can be divided into a clockwise direction and an anticlockwise direction, the air outlet direction of the air outlet can be determined according to the pulse type of the pulse information and the corresponding pulse number, and the air outlet direction of the rotary air outlet assembly is controlled according to the air outlet direction.
In order to determine an accurate air outlet direction, in a preferred embodiment of the present application, the air outlet direction of the air outlet is determined according to the pulse information and the direction in which the zero point passes through the optoelectronic switch last time, specifically:
determining angle information of the air outlet according to the pulse information and a preset relation table;
determining the direction of the air outlet according to the angle information and the direction;
the preset relation table is determined according to the corresponding relation between each pulse type and the angle rotated by the grating fluted disc, and the pulse types comprise a first type, a second type, a third type, a fourth type and a fifth type.
In this step, the pulse types include a first type, a second type, a third type, a fourth type and a fifth type, and a preset relationship table is established according to a corresponding relationship between each pulse type and a rotated angle of the grating fluted disc, so that different pulse types correspond to different rotated angles of the grating fluted disc, after pulse information is determined, the rotated angle of the grating fluted disc can be determined according to the pulse types in the pulse information, a total rotation angle is determined according to the number of pulses corresponding to the pulse types, so that angle information of the air outlet is determined based on the total rotation angle of the grating fluted disc, if the direction is clockwise, the air outlet is on the left side of a zero position, if the direction is counterclockwise, the air outlet is on the right side of the zero position, and the orientation of the air outlet can be determined according to the angle information and the direction.
It should be noted that the scheme of the above preferred embodiment is only a specific implementation scheme proposed in the present application, and other ways of determining the outlet direction of the outlet according to the pulse information and the direction all belong to the protection scope of the present application.
In order to determine accurate angle information of the air outlet, in a preferred embodiment of the present application, the angle information of the air outlet is determined according to the pulse information and a preset relationship table, specifically:
determining the product of each pulse quantity in the pulse information and the corresponding angle;
determining the angle information from the sum of the products.
In this step, for example, if the pulse information includes n1 pulse signals of the first type L1, n2 pulse signals of the second type L2, and n3 pulse signals of the third type L3, and the angle corresponding to the first type L1 is a1, the angle corresponding to the second type L2 is a2, and the angle corresponding to the third type L3 is a3, the angle a corresponding to the angle information is n1 × a1+ n2 × a2+ n3 × a 3.
It should be noted that the scheme of the above preferred embodiment is only a specific implementation scheme proposed in the present application, and other ways of determining the angle information of the air outlet according to the pulse information and the preset relationship table all belong to the protection scope of the present application.
In order to obtain different pulse signals before and after the zero point of the grating fluted disc passes through the zero point position, and to more accurately determine the rotation angle and the rotation direction, as shown in fig. 5 and 6, the grating teeth include a first type of grating teeth (large grating teeth) on one side of a connecting line (boundary) of the zero point and the rotation center and a second type of grating teeth (small grating teeth) on the other side of the connecting line, a pulse generated by the photoelectric switch through a first interval L0 between the first type of grating teeth and the second type of grating teeth is a pulse w of the first type, a pulse generated by the photoelectric switch through a first type of grating teeth L1 is a pulse D of the second type, a pulse generated by the photoelectric switch through a second interval L2 between the first type of grating teeth is a pulse Y of the third type, and a pulse generated by the photoelectric switch through a third interval L3 between the second type of grating teeth is a pulse Y of the fourth type, the pulse generated by the second type of grating teeth L4 passing through the photoelectric switch is the fifth type of pulse d, and the first interval L0 is different from the second interval L2 and the third interval L3.
In order to control the air-out direction of rotatory air-out subassembly based on definite air outlet position, in the preferred embodiment of this application, according to air outlet position control the air-out direction of rotatory air-out subassembly specifically is:
receiving a target air outlet direction input by a user;
and adjusting the air outlet direction according to the direction and the angle of the target air outlet direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air outlet direction.
In this step, after receiving a target air-out direction input by a user, the air-out direction is adjusted according to the direction and angle of the target air-out direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air-out direction, and the air-out direction is accurately controlled.
By applying the technical scheme, in an air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a rotary air outlet assembly and a controller, the rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, and is used for rotating around a rotation center relative to a shell around the indoor heat exchanger to enable the air outlet to rotate to exhaust air, the grating fluted disc is fixed relative to the air outlet, pulse information is determined according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, an air outlet position of the air outlet is determined according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and the air outlet direction of the rotary air outlet assembly is controlled according to the air outlet position; the zero point and the position of the central line of the air outlet when the center of the photoelectric switch is aligned are zero positions, the zero positions correspond to the front position of the shell, the air sweeping range of the air outlet is expanded through the rotary air outlet assembly, pulse signals generated by the photoelectric switch are intermittently shielded through grating teeth of a grating fluted disc to determine the direction of the air outlet, the accuracy of controlling the air outlet direction is improved, the air outlet direction is accurately controlled while the refrigerating and heating speed of the whole room is improved, and the user experience is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. An air conditioner, characterized in that the air conditioner comprises:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, and is used for rotating around a rotation center relative to the shell around the indoor heat exchanger so as to enable the air outlet to rotate to exhaust air, wherein the grating fluted disc is fixed relative to the air outlet;
the controller is configured to include:
determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch;
determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction;
the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the shell in front of the front view.
2. The air conditioner according to claim 1, wherein the control appliance body is configured to:
if the rotating path does not pass through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between a first position when the rotating action starts and a second position when the rotating action ends;
and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position.
3. The air conditioner of claim 2, wherein the controller is further specifically configured to:
determining angle information of the air outlet according to the pulse information and a preset relation table;
determining the direction of the air outlet according to the angle information and the direction;
the preset relation table is determined according to the corresponding relation between each pulse type and the angle rotated by the grating fluted disc, and the pulse types comprise a first type, a second type, a third type, a fourth type and a fifth type.
4. The air conditioner of claim 3, wherein the controller is further specifically configured to:
determining the product of each pulse quantity in the pulse information and the corresponding angle;
determining the angle information from the sum of the products;
wherein the grating teeth comprise first grating teeth on one side of a connecting line of the zero point and the rotation center and second grating teeth on the other side of the connecting line, the pulses generated by the photoelectric switch through the first interval between the first type of grating teeth and the second type of grating teeth are the pulses of the first type, the pulses generated by the first type of grating teeth via the opto-electronic switch are of the second type, the pulses generated by the opto-electronic switch at the second intervals between the grating teeth of the first type are of the third type, the pulses generated by the photoelectric switch in the third interval between the second type of grating teeth are the fourth type of pulses, the pulse generated by the second type of grating tooth passing through the photoelectric switch is the fifth type of pulse, and the first interval is different from the second interval and the third interval.
5. The air conditioner of claim 1, wherein the controller is further specifically configured to:
receiving a target air outlet direction input by a user;
and adjusting the air outlet direction according to the direction and the angle of the target air outlet direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air outlet direction.
6. The method for controlling the air outlet direction is applied to an air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a rotary air outlet assembly and a controller, wherein the rotary air outlet assembly comprises a grating fluted disc, a photoelectric switch and an air outlet, and is used for rotating around a rotation center relative to a shell around the indoor heat exchanger so as to enable the air outlet to rotate to outlet air, the grating fluted disc is fixed relative to the air outlet, and the method comprises the following steps:
determining pulse information according to a rotation path of a zero point of the grating fluted disc when the rotary air outlet assembly completes a preset rotation action, wherein the pulse information is generated when grating teeth of the grating fluted disc intermittently shield the photoelectric switch;
determining the air outlet direction of the air outlet according to the pulse information and the direction of the zero point passing through the photoelectric switch for the latest time, and controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction;
the position of the center line of the air outlet when the zero point is aligned with the center of the photoelectric switch is a zero point position, and the zero point position corresponds to the front position of the shell in front of the front view.
7. The method according to claim 6, wherein the determining the pulse information according to the rotation path of the zero point of the grating fluted disc when the rotary air outlet assembly completes the preset rotation action specifically comprises:
if the rotating path does not pass through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between a first position when the rotating action starts and a second position when the rotating action ends;
and if the rotating path passes through the zero position, determining the pulse information according to the pulse type and the corresponding pulse number recorded between the zero position and the second position.
8. The method according to claim 7, wherein the determining the outlet orientation of the outlet according to the pulse information and the direction in which the zero point passes through the optoelectronic switch last time is specifically:
determining angle information of the air outlet according to the pulse information and a preset relation table;
determining the direction of the air outlet according to the angle information and the direction;
the preset relation table is determined according to the corresponding relation between each pulse type and the angle rotated by the grating fluted disc, and the pulse types comprise a first type, a second type, a third type, a fourth type and a fifth type.
9. The method of claim 8, wherein the determining the angle information of the air outlet according to the pulse information and a preset relationship table specifically comprises:
determining the product of each pulse quantity in the pulse information and the corresponding angle;
determining the angle information from the sum of the products;
wherein the grating teeth comprise first grating teeth on one side of a connecting line of the zero point and the rotation center and second grating teeth on the other side of the connecting line, the pulses generated by the photoelectric switch through the first interval between the first type of grating teeth and the second type of grating teeth are the pulses of the first type, the pulses generated by the first type of grating teeth via the opto-electronic switch are of the second type, the pulses generated by the opto-electronic switch at the second intervals between the grating teeth of the first type are of the third type, the pulses generated by the photoelectric switch in the third interval between the second type of grating teeth are the fourth type of pulses, the pulse generated by the second type of grating tooth passing through the photoelectric switch is the fifth type of pulse, and the first interval is different from the second interval and the third interval.
10. The method of claim 6, wherein the controlling the air outlet direction of the rotary air outlet assembly according to the air outlet direction specifically comprises:
receiving a target air outlet direction input by a user;
and adjusting the air outlet direction according to the direction and the angle of the target air outlet direction relative to the air outlet direction, so that the air outlet direction is consistent with the target air outlet direction.
CN202010443423.6A 2020-05-22 2020-05-22 Air conditioner and method for controlling air outlet direction Active CN111911999B (en)

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