CN110160241B - Air conditioner and air deflector control method for air conditioner refrigeration - Google Patents
Air conditioner and air deflector control method for air conditioner refrigeration Download PDFInfo
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- CN110160241B CN110160241B CN201910415001.5A CN201910415001A CN110160241B CN 110160241 B CN110160241 B CN 110160241B CN 201910415001 A CN201910415001 A CN 201910415001A CN 110160241 B CN110160241 B CN 110160241B
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- air
- guide plate
- deflector
- air conditioner
- air deflector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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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
- 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
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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
- 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
- F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
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- 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)
- Air-Flow Control Members (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to an air conditioner and an air deflector control method for air conditioner refrigeration. The air conditioner comprises a shell and an air guide plate group, wherein the air guide plate group comprises a first air guide plate and a second air guide plate, the second air guide plate is arranged on the first air guide plate in an embedded mode and can rotate non-coaxially relative to the first air guide plate, the first air guide plate and/or the second air guide plate are/is provided with a plurality of ventilation holes along the thickness direction of the first air guide plate and/or the second air guide plate, and the aperture of at least one part of the ventilation holes is increased along the air outlet direction; according to the control method, under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to the first temperature threshold, the first air deflector and the second air deflector are rotated to the first set position and the second set position so as to block most or all cold air flow, so that most or all cold air flow is blown out of the air through holes, and a novel micropore air supply mode is realized.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and an air deflector control method for air conditioner refrigeration.
Background
The embedded air conditioner is widely applied to environments with large spaces, such as markets, large-scale venues, offices, classrooms and the like, and the embedded air conditioner is usually installed on a ceiling, so that the embedded air conditioner has the advantages of small floor area, large radiation area, good heat exchange effect and the like.
Most of the existing embedded air conditioners are provided with large air deflectors at air outlets, the large air deflectors are used for guiding air flow blown out from the air outlets to a longer distance, and the direction of the air flow can be controlled by rotating the large air deflectors.
Accordingly, there is a need in the art for a new air conditioner and a method for controlling an air deflector for cooling an air conditioner that solves the above-mentioned problems.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, that is, the existing embedded air conditioner can only guide air by using a large air guide plate, so that the air supply mode is single and the air supply range is limited, the invention provides a method for controlling an air guide plate for air conditioner refrigeration, in one aspect, the air conditioner comprises a shell and an air guide plate group, the air guide plate group comprises a first air guide plate, an air outlet is arranged on the shell, and the first air guide plate is rotatably arranged on the shell so as to be capable of plugging or opening the air outlet; the air guide plate group further comprises a second air guide plate, the second air guide plate is arranged on the first air guide plate in an embedded mode and can rotate non-coaxially relative to the first air guide plate, the first air guide plate and/or the second air guide plate are/is provided with a plurality of air through holes along the thickness direction of the first air guide plate and/or the second air guide plate, and the aperture of at least one part of the air through holes is increased along the air outlet direction;
the control method comprises the following steps: under the condition that the air conditioner is in a refrigeration working condition, when the absolute value of the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to a first temperature threshold value, controlling the current air outlet speed of the air conditioner to be not larger than a first air speed threshold value; rotating the first air deflector to a first set position, and rotating the second air deflector to a second set position; the first set position and the horizontal plane form a first set angle, and the first set angle is not greater than a first angle threshold value; the second set position and the horizontal plane form a second set angle, and the second set angle is not larger than a second angle threshold.
In a preferred embodiment of the above air deflector control method, the first angle threshold is in a range of 0 ° to 5 °, and the second angle threshold is in a range of 0 ° to 5 °.
In a preferred embodiment of the air guide plate control method, the second set angle is smaller than or equal to the first set angle.
In a preferred technical solution of the above-mentioned air deflector control method, "controlling the current air-out speed of the air conditioner to be not greater than the first wind speed threshold" includes: and controlling the current air outlet speed of the air conditioner within the range of 0.3m/s to 1 m/s.
In a preferred embodiment of the above air guide plate control method, "rotating the second air guide plate to a second set position" includes: rotating the second air deflection plate to a closed position relative to the first air deflection plate; the specific steps of rotating the first air deflector to a first set position include: the first air deflector is rotated to a closed position.
In a preferred embodiment of the above-described air guide plate control method, after the step of "rotating the first air guide plate to a first set position and rotating the second air guide plate to a second set position", the control method further includes: under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is larger than a second temperature threshold value, rotating the first air deflector to a third set position, and rotating the second air deflector to a closed position; wherein the second temperature threshold is greater than or equal to the first temperature threshold; the third set position and the horizontal plane form a third set angle, and the third set angle is larger than the first angle threshold.
In a preferred embodiment of the above-described air guide plate control method, after the step of "rotating the first air guide plate to the third set position", the control method further includes: enabling the first air deflector to rotate back and forth within a first set angle range; the minimum value of the first set angle range is greater than or equal to the first angle threshold.
In a preferred embodiment of the above-described air guide plate control method, after the step of "rotating the first air guide plate to a first set position and rotating the second air guide plate to a second set position", the control method further includes: controlling the air conditioner to be larger than a second wind speed threshold under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is larger than a second temperature threshold; wherein the second wind speed threshold is greater than the first wind speed threshold, and the second temperature threshold is greater than or equal to the first temperature threshold.
The invention also provides an air conditioner which comprises a controller, wherein the controller is used for executing the air deflector control method in the scheme.
In a preferred technical solution of the above air conditioner, the air conditioner is an embedded air conditioner, and the embedded air conditioner includes a plurality of air deflector groups according to the above solution.
The air conditioner is provided with the second air guide plate on the first air guide plate in an embedded mode, and the two air guide plates can rotate non-coaxially, so that the first air guide plate and the second air guide plate can be controlled to rotate independently or simultaneously to achieve more various air supply modes. In addition, at least one of the first air deflector and the second air deflector is provided with a ventilation hole so as to allow air flow to be blown out through the ventilation hole, and therefore a new air outlet mode is formed. The ventilation hole air-out mode, the first air deflector air-out mode and the second air deflector air-out mode are combined with each other, so that the air supply mode can be further enriched, and the diversified air supply effect can be realized.
Based on the structure, the invention further provides a control method of the air deflector for air conditioner refrigeration, under the condition that the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to the first temperature threshold, the control method enables the first air deflector and the second air deflector to block most or all cold air flow when the first air deflector and the second air deflector rotate to the first set position and the second set position through reasonable setting of the first angle threshold and the second angle threshold, so that most or all cold air flow can only be blown out from the air through holes of the first air deflector and/or the second air deflector, and the air outlet speed is controlled in a smaller speed range through reasonable setting of the first air speed threshold, so that the air supply effect of breeze or even no wind is realized, and the comfort degree of users is improved.
Drawings
The air conditioner and the air deflector control method for cooling the air conditioner according to the present invention will be described with reference to the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of an indoor unit of an embedded air conditioner according to an embodiment of the present invention, in which a first air deflector and a second air deflector are both in an open state;
fig. 2 is a schematic cross-sectional view of an indoor unit of an embedded air conditioner according to an embodiment of the present invention, in which a first air guiding plate and a second air guiding plate are both in an open state;
FIG. 3 is an enlarged schematic view of detail A of FIG. 2;
fig. 4 is a schematic structural view illustrating a panel assembly of an indoor unit of an embedded air conditioner according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of detail B of FIG. 4;
fig. 6 is a schematic structural view illustrating a first air deflector of an indoor unit of an embedded air conditioner according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along the line C-C in FIG. 6;
FIG. 8 is a first flowchart illustrating a method for controlling an air deflector for cooling an air conditioner according to an embodiment of the present invention;
FIG. 9 is a second flowchart illustrating a method for controlling an air deflector for cooling an air conditioner according to an embodiment of the present invention;
fig. 10 is a third flowchart illustrating a method for controlling an air deflector for cooling an air conditioner according to an embodiment of the present invention.
Reference numerals:
1. a panel assembly; 11. a panel frame; 111. an air outlet; 112. a butt joint groove; 12. an air inlet grille; 2. a housing body; 31. a first air deflector; 311. a first portion; 3111. an installation port; 3112. a second step structure; 312. a second portion; 3121. a first ventilation hole; 3122. a second ventilation hole; 32. a second air deflector; 321. a first step structure; 33. a first air deflection motor; 34. a rotating arm; 35. a second air deflection motor.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment describes the air conditioner of the present invention by taking a built-in air conditioner as an example, it should be noted that the air conditioner of the present invention is not limited to the built-in air conditioner, and can be other types of air conditioners, and those skilled in the art can adjust the air conditioner as needed to suit specific applications. The air conditioner according to the present invention may also be a wall-mounted air conditioner, a cabinet air conditioner, etc. As another example, although the steps of the method of the present invention are described herein in a particular order, these orders are not limiting, and one skilled in the art may perform the steps in a different order without departing from the underlying principles of the invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and 2, in which fig. 1 is a schematic structural view of an indoor unit of an embedded air conditioner according to an embodiment of the present invention, a first air deflector and a second air deflector shown in the drawings are both in an open state; fig. 2 is a schematic cross-sectional view of an indoor unit of an embedded air conditioner according to an embodiment of the present invention, in which a first air deflector and a second air deflector are both shown in an open state; fig. 3 is an enlarged schematic view of a portion a in fig. 2.
As shown in fig. 1, 2 and 3, the embedded air conditioner of the present invention includes an indoor unit and an outdoor unit, the indoor unit includes a casing, the casing includes a casing body 2 and a panel assembly 1 detachably disposed on the casing body 2, the panel assembly 1 includes a panel frame 11 and an air inlet grille 12, and the panel frame 11 is provided with a plurality of air outlets 111. The indoor unit further comprises a plurality of air guide plate groups, each air guide plate group comprises a first air guide plate 31 and a second air guide plate 32, the first air guide plate 31 is rotatably arranged on the panel frame 11 so as to be capable of plugging or opening the air outlet 111, the second air guide plate 32 is arranged on the first air guide plate 31 in an embedded mode, the second air guide plate 32 can rotate non-coaxially relative to the first air guide plate 31, the first air guide plate and/or the second air guide plate are/is provided with a plurality of air penetrating holes along the thickness direction of the first air guide plate and/or the second air guide plate, and the aperture of at least one part of the air penetrating holes is increased along the air outlet direction.
It can be seen that the embedded air conditioner of the present invention has the second air deflector 32 embedded in the first air deflector 31, and the second air deflector 32 can rotate non-coaxially with respect to the first air deflector 31, and various air supply combinations can be formed by rotating the first air deflector 31 and the second air deflector 32 separately or simultaneously, so as to implement more various air direction controls, and further meet various air supply requirements of users. For example, when the first air deflector 31 rotates from the closed position to open the air outlet 111, the second air deflector 32 is opened at this time, which can split and guide the air flow, forming a plurality of air flows with different flow directions, thereby expanding the air supply range, and then the flow direction of each air flow can be changed by adjusting the rotation angles of the first air deflector 31 and the second air deflector 32, so that the air flow can be blown to a plurality of areas of the indoor space. And secondly, the flatness of the air guide plate group can be ensured by the design of the embedded air guide plate group. Compared with the coaxially arranged air guide plate group, the arrangement form of the second air guide plate 32 can be more flexible, and a person skilled in the art can arrange the arrangement position of the second air guide plate 32 on the first air guide plate, the position of the pivotal axis of the second air guide plate and the rotation direction of the second air guide plate according to actual requirements. As an example, the first air guiding plate 31 is pivotally disposed on the panel frame 11 through the rotating arm 34, the second air guiding plate 32 is disposed on the first air guiding plate 31 in an embedded manner, and the pivot axis of the second air guiding plate 32 is disposed on a side of the second air guiding plate 32 away from the air outlet 111 along the air outlet direction, in the cooling/heating mode, by respectively opening the first air guiding plate 31 and the second air guiding plate 32 to a set angle, the first air guiding plate 31 will flow part of the cold/hot air to a space away from the embedded air conditioner, and the second air guiding plate 32 will flow part of the cold/hot air to a space below the embedded air conditioner, so that the cold/hot air can be sufficiently mixed with the air in the indoor space, thereby improving the cooling/heating effect. In addition, a plurality of ventilation holes are formed in at least one of the first air deflector and the second air deflector, so that air flow can be blown out through the ventilation holes, and a new air outlet mode is formed. The air outlet mode of the air vent hole, the air outlet mode of the first air deflector and the air outlet mode of the second air deflector are combined with each other to form more various air supply modes. When the first air deflector is opened, the airflow can be blown out from the air penetration hole while being blown out along the first air deflector, and the direction of the airflow blown out from the air penetration hole is also changed as the first air deflector rotates. And under the condition that the first air deflector and the second air deflector are both closed, the first air deflector and the second air deflector play a role in blocking the air flow blown out from the air outlet, the air flow can only be blown out through the air penetration holes, the air blowing quantity of the air penetration holes is small, the soft feeling of breeze or even no-wind state can be realized, and the comfort level of a user is improved.
In one possible embodiment, as shown in fig. 3, the first air guiding plate 31 is provided with a mounting opening 3111 along the thickness direction thereof, and the second air guiding plate 32 is rotatably provided in the mounting opening 3111 so as to open or close the mounting opening 3111. When the second air guide plate 32 is in the closed state, the mounting port 3111 is blocked by the second air guide plate 32, and the air flow can be sent out only by the first air guide plate 31. When the second air deflector 32 rotates, the mounting port 3111 is opened, and at this time, part of the air flow is guided by the second air deflector 32 and sent out from the mounting port 3111, so as to perform a shunting function.
The shape of the mounting port 3111 may be various, and it is preferable to provide the mounting port 3111 in a rectangular shape for manufacturing, but the shape of the mounting port 3111 is not limited thereto, and may be circular, oval or other possible shapes. In addition, the number of the mounting openings is not limited to one in the example, and a plurality of mounting openings may be provided in the first air guiding plate and a second air guiding plate may be provided in each mounting opening to control opening and closing of the mounting openings. The shape, the number and the arrangement position of the mounting openings can be flexibly arranged according to actual conditions by a person skilled in the art.
It can be understood that the installation manner of the second air guiding plate 32 is not limited to the above-mentioned manner of installing in the installation opening 3111, and those skilled in the art can adjust the installation manner of the second air guiding plate 32 according to actual requirements. As an example, the first wind deflector 31 is formed with an installation notch along the side of the wind outlet direction far from the wind outlet 111, and the second wind deflector 32 is rotatably disposed in the installation notch.
In a preferred embodiment, as shown in fig. 3, at least one side portion of the second air deflector 32 is formed with a first abutting structure, a second abutting structure is formed at a position where an outer edge of the mounting port 3111 corresponds to the first abutting structure, and the first abutting structure and the second abutting structure abut against each other under the condition that the second air deflector 32 blocks the mounting port 3111. Through the arrangement of the first butt joint structure and the second butt joint structure, the surface flatness of the air guide plate group can be guaranteed, gaps of the two air guide plates can be reduced or even eliminated as far as possible, and particularly under the condition that the first air guide plate 31 is opened and the second air guide plate 32 is closed, the first butt joint structure and the second butt joint structure abut against each other to reduce or even eliminate gaps between the two air guide plates, so that air flow is prevented from leaking out of the gaps between the two air guide plates. In addition, the arrangement can also solve the problem that dust enters the shell from the gap to cause pollution inside the shell.
The specific form of the first docking structure and the second docking structure may be various, as shown in fig. 3, as an example, a side portion (right side shown in fig. 3) of the second air deflector 32 close to the inside of the housing is provided with a first step structure 321, a position of an outer edge of the mounting port 3111 corresponding to the first step structure 321 is provided with a second step structure 3112, and in a case where the second air deflector 32 blocks the mounting port 3111, the first step structure 321 abuts against the second step structure 3112. Through the arrangement of the (first and second) step structures, a good sealing effect can be achieved on a gap between the first air deflector 31 and the second air deflector 32, and the processing and production are facilitated.
It should be noted that the structures, the numbers and the arrangement positions of the first and second docking structures are not limited to the above examples, and those skilled in the art can flexibly arrange them according to the actual situations. If a plate-shaped first abutting structure can be provided on each of the four side portions of the second air guide plate 32, a groove-shaped second abutting structure is provided at a position corresponding to the outer edge of the mounting opening 3111.
With continued reference to fig. 1, 2 and 3, in a preferred embodiment, the first air guiding plate 31 sequentially includes a first portion 311 and a second portion 312 along the air outlet direction, wherein the first portion 311 is substantially a horizontal flat plate structure, and the mounting port 3111 is disposed on the first portion 311. Through the arrangement, the mounting port 3111 can be close to the air outlet 111, so that the air flow coming out of the air outlet 111 can flow to the mounting port 3111 more easily, and the first part of the horizontal plate-shaped structure is convenient for mounting the second air deflector. The second portion 312 includes an upstream end and a downstream end in the air outlet direction in order, and the upstream end of the second portion 312 is higher than the downstream end. Through the arrangement, the air flow can be guided to be sent out upwards, a large amount of air flow is prevented from blowing the user directly, and therefore the comfort of the user is improved. The shape of the second portion may be varied, and as an example, as shown in fig. 3, the second portion 312 has an arc-shaped plate-like structure.
It should be noted that the first portion 311 and the second portion 312 may also have other shapes, for example, the first portion 311 and the second portion 312 are both arc-shaped plate-shaped structures, or the first portion 311 and the second portion 312 are both horizontal plate-shaped structures. In addition, the shape of the first air guiding plate 31 is not limited to a two-section structure, for example, the first air guiding plate 31 may also be an arc-shaped structure as a whole, and a person skilled in the art may flexibly set the specific structure of the first air guiding plate 31 according to the actual situation so as to adapt to the specific application scenario.
Preferably, as shown in fig. 1, the panel frame 11 is provided with a docking slot 112 matching with the first air deflector 31, the first air deflector 31 is embedded in the docking slot 112 in the case that the first air deflector 31 blocks the air outlet 111, and the outer surface of the first air deflector is flush with the outer surface of the panel frame in the case that the first air deflector is completely embedded in the docking slot 112. The flatness of the surface of the panel assembly 1 can be improved by this arrangement.
Referring next to fig. 4 and 5, wherein fig. 4 is a schematic structural view of a panel assembly of an indoor unit of an embedded air conditioner according to an embodiment of the present invention; fig. 5 is an enlarged schematic view of a portion B in fig. 4. As shown in fig. 4 and 5, in one possible embodiment, a first air deflector motor box is disposed on the inner side (i.e., the side close to the housing body 2) of the panel frame 11, a first air deflector motor 33 is mounted in the first air deflector motor box, a rotating arm 34 is disposed on the first air deflector 31, and the first air deflector motor 33 drives the rotating arm 34 to rotate the first air deflector 31. A second air deflector motor box is arranged on the inner side of the first air deflector 31, a second air deflector motor 35 is installed in the second air deflector motor box, and the second air deflector motor 35 is used for driving the second air deflector 32 to rotate relative to the first air deflector 31. Through the arrangement, the two air guide plates can independently rotate, and a user can selectively enable the two air guide plates to synchronously rotate for air guide or enable the two air guide plates to respectively rotate for air guide according to actual requirements. In addition, since the second air guiding plate 32 is disposed on the first air guiding plate 31, the second air guiding plate 32 can rotate with the first air guiding plate 31, and can also rotate relative to the first air guiding plate 31, so that a variety of air blowing modes can be formed.
Preferably, the number of the first air deflection motors 33 is two to improve the rotation reliability of the first air deflection plate 31, and the two motors are respectively disposed at positions close to both ends of the first air deflection plate 31 inside the panel frame 11 to make the weight distribution of the motors more uniform.
It should be noted that, in practical applications, the second air guiding plate motor 35 is not necessarily provided, and those skilled in the art can select whether to provide the second air guiding plate motor 35 according to actual requirements. As an example, the first air guiding plate 31 is provided with a mounting opening 3111, the second air guiding plate 32 is rotatably disposed in the mounting opening 3111 through a pivot shaft, and a position of the first air guiding plate 31 corresponding to the pivot shaft is provided with a limiting device. The controller of the air conditioner controls the limiting device to lock and unlock the pivot shaft, and the second air deflector cannot rotate under the condition that the pivot shaft is locked; when the pivot shaft is unlocked, the first air guiding plate 31 swings back and forth under the driving of the first air guiding plate motor 33, and the second air guiding plate 32 also swings back and forth along with the first air guiding plate.
Referring to fig. 6 and 7, fig. 6 is a schematic structural view illustrating a second air deflector of an indoor unit of an embedded air conditioner according to an embodiment of the present invention; fig. 7 is a schematic sectional view taken along the direction C-C in fig. 6. In one possible embodiment, as shown in fig. 6 and 7, the second portion 312 of the first air guiding plate 31 is provided with a plurality of first ventilation holes 3121, the diameter of the first ventilation holes 3121 increases along the air outlet direction, the first ventilation holes 3121 are distributed into a plurality of first hole groups along the width direction of the second portion, and as can be seen from fig. 6, the first hole groups are the 1 st row, the 3 rd row and the 5 th row from top to bottom.
The advantage of above-mentioned setting lies in: in the process that the airflow passes through the first ventilation holes 3121, the airflow channel is widened, so that the speed of the airflow is reduced, heavier cold airflow is fully mixed with local hot air close to the first ventilation holes 3121 and then slowly falls down, and the refrigeration effect is ensured.
Preferably, the second portion 312 of the first air guiding plate 31 is further provided with a plurality of second ventilation holes 3122, the aperture of the second ventilation holes 3122 decreases along the air outlet direction, the second ventilation holes 3122 are distributed along the width direction of the second portion into a plurality of second hole groups, the first hole groups and the second hole groups are arranged on the second portion in a staggered manner, as can be seen from fig. 6, the second hole groups are arranged in the 2 nd row and the 4 th row from top to bottom, the first ventilation holes/the second ventilation holes in the first hole group/the second hole group of each row are arranged at intervals along the length direction of the first air guiding plate, and the first ventilation holes and the second ventilation holes of adjacent rows are also arranged in a staggered manner.
The advantage of above-mentioned setting lies in: during the process of the air flow passing through the second ventilation hole 3122, the speed of the air flow is accelerated due to the narrowing of the air flow passage, so that the air flow passing through the second ventilation hole 3122 can reach a more distant area and be mixed with the ambient air of the area. In addition, since the air flow velocities through the first ventilating hole 3121 and the second ventilating hole 3122 are different, air mixing between the two ventilating holes can be promoted. It can be seen that through the arrangement of the first ventilating hole 3121 and the second ventilating hole 3122, sufficient mixing of the air flow with the air of the plurality of regions can be achieved. The first ventilating holes 3121 and the second ventilating holes 3122 are reasonably and regularly arranged so as to improve the uniformity of the air supply.
Preferably, as shown in fig. 7, the minimum diameter of the first ventilating hole 3121 and the maximum diameter of the second ventilating hole 3122 are 2 to 4mm, and the maximum diameter is 3 to 6mm, so that the air flow tends to breeze or even no wind, and the comfort of the user is improved. Further, the cross sections of the first ventilation hole 3121 and the second ventilation hole 3122 are circular holes, and the longitudinal section is conical, so that the airflow can smoothly pass through the first ventilation hole 3121 and the second ventilation hole 3122, the manufacturing and forming are facilitated, and the cost is reduced.
Of course, it is understood that the structure of the first ventilating hole 3121 and the second ventilating hole 3122 is not limited to the above examples, for example, the longitudinal section of the first ventilating hole 3121/the second ventilating hole 3122 may also be any shape that increases/decreases in the radial direction of the air outlet direction, the cross section of the first ventilating hole 3121 and the second ventilating hole 3122 may also be an ellipse, a polygon (such as a rectangle, a triangle, etc.), or other shapes, the shapes of the plurality of first ventilating holes 3121/the second ventilating holes 3122 may be the same or different, and the diameter of the first ventilating hole 3121/the second ventilating hole 3122 may also be other possible sizes, and those skilled in the art may flexibly set the shapes and sizes of the first ventilating hole 3121 and the second ventilating hole 3122 according to actual requirements.
It should be noted that the ventilation holes are not limited to be disposed on the first air guiding plate, but may also be disposed on the second air guiding plate, and for the same air guiding plate, only one ventilation hole or multiple ventilation holes may be disposed on the same air guiding plate, and the size, shape and distribution of the ventilation holes may also be flexibly adjusted according to the actual situation, so as to meet the more specific application requirements. As an example, only the second air guiding plate is provided with a plurality of air penetrating holes which are elliptical and have radial sizes increasing along the air outlet direction, and the plurality of air penetrating holes are distributed on the whole second air guiding plate at intervals.
It will be understood by those skilled in the art that the built-in air conditioner obviously includes other parts and structures besides the parts of the built-in air conditioner described above, although not described in the embodiment, the parts should be understood according to the shapes and features of the built-in air conditioner in the prior art, and the shapes and features should not be construed as limiting the present invention. For example, the embedded air conditioner may further include a compressor, a heat exchanger, and the like.
Referring to fig. 8, fig. 8 is a first flowchart illustrating a method for controlling an air deflector for cooling of an air conditioner according to an embodiment of the present invention. As shown in fig. 8, based on the structure of the air conditioner, the present invention further provides a method for controlling an air deflector used for cooling of the air conditioner, wherein the method for controlling an air deflector of the present invention includes:
step S10: under the condition that the air conditioner is in a refrigeration working condition, when the absolute value of the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to a first temperature threshold value, the current air outlet speed of the air conditioner is adjusted to be not larger than a first air speed threshold value.
The set target temperature is generally a target temperature that the user sets to be expected to reach the indoor ambient temperature. The specific value of the first temperature threshold may be set in advance at the factory stage, or may be set by a user according to actual requirements, and through years of experimental research by the inventor, it is found that, when the difference between the ambient temperature and the set target temperature is less than or equal to 2 °, the human body does not sense the temperature sensitively, that is, when the ambient temperature is higher than or lower than the set target temperature by 2 ℃, the user generally does not easily sense the change of the ambient temperature, and in view of this, the value of the first temperature threshold is preferably in a range of 0 to 2 ℃. Of course, the first temperature threshold may be other possible values, and those skilled in the art can flexibly set the first temperature threshold according to actual requirements.
The first wind speed threshold may be preset in the factory stage, or may be set by a user according to actual requirements during use. The purpose of setting the first wind speed threshold is to keep the wind outlet speed within a small speed range when the indoor environment temperature approaches the set target temperature, thereby achieving the effect of soft wind outlet. Preferably, the first wind speed threshold value is 1 m/s. And, under the condition that the current air-out speed of the air conditioner is not greater than the first wind speed threshold, the current air-out speed may be fixed or may be changed within a range not greater than the wind speed threshold. The technical personnel in the field can flexibly set the air outlet speed according to the actual situation as long as the current air outlet speed is kept in a smaller speed range.
Step S20: the first air deflector is rotated to a first set position.
The first set position and the horizontal plane form a first set angle, the first set angle is not larger than a first angle threshold value, and the first angle threshold value is set to keep the opening angle of the first air deflector within a small range, so that the first air deflector can block most of cold air flow. Preferably, the first angle threshold is in the range of 0 ° to 5 °. Under the condition that the first set angle is not larger than the first angle threshold, the specific value of the first set angle may be preset in advance in the factory stage, or a plurality of values may be preset in a range not larger than the first angle threshold, so that a user can select the first set angle according to actual requirements in the using process.
Step S30: the second air deflector is rotated to a second set position.
The second set position and the horizontal plane form a second set angle, the second set angle is not larger than a second angle threshold, and the second angle threshold is set so that the opening angle of the second air deflector can be kept in a small range, and therefore the second air deflector can block most of cold air flow. Optionally, the second angle threshold is in the range of 0 ° to 5 °. Under the condition that the second set angle is not greater than the second angle threshold, the specific value of the second set angle may be preset in advance in the factory stage, or a plurality of values may be preset in an angle range not greater than the second angle threshold, so that the user can select the second set angle according to actual requirements in the using process.
Preferably, the second set angle is smaller than or equal to the first set angle, and the second air deflector 32 is rotated inwards relative to the first air deflector 31 by the arrangement. Thus, when the first set angle is not zero, the second air guiding plate 32 can block the cold airflow blown out from the gap between the first air guiding plate 31 and the panel frame 11.
Here, considering that the first air guiding plate and the second air guiding plate do not rotate toward the inside of the casing body in general, both the first setting angle and the second setting angle are equal to or larger than zero.
The advantage of above-mentioned setting lies in: under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is detected to be small, in order to improve the comfort degree of a user, the first air deflector 31 and the second air deflector 32 are respectively rotated to a first set position and a second set position which are not more than 5 ℃ away from the horizontal plane. Under the condition that the first set angle is not zero, most of cold air flow blown out from the air outlet is blocked by the first air deflector 31 due to the small opening angle of the first air deflector 31; the second air guiding plate 32 is rotated inward to block the cold air flow blown out from the gap between the first air guiding plate 31 and the panel frame 11, and most of the cold air flow is blocked by the air guiding plate group. When the first set angle is zero, all of the cold air flow blown out from the air outlet is blocked by the air guide plate group, that is, the first air guide plate 31 and the second air guide plate 32 can block most or all of the cold air flow through the above arrangement, so that most or all of the cold air flow can be blown out only from the first ventilation hole 3121 and the second ventilation hole 3122 (hereinafter, collectively referred to as ventilation holes) of the first air guide plate 31. Meanwhile, the air outlet speed of the air conditioner is adjusted to be not more than 1m/s, so that the air speed and the air quantity of the cold air blown out from the air penetration holes tend to be breeze or even no wind feeling state. In addition, since the aperture of the first ventilation hole 3121 on the first air deflector 31 is small, when the air current passes through the first ventilation hole 3121, the air current is evacuated into a fine air current to spread indoors, so that the user can be given a feeling of no wind while the indoor environment temperature is stable due to continuous refrigeration, and the comfort level of the user is improved. In addition, as the aperture of at least a part of the ventilation holes (i.e. the first ventilation holes 3121) on the first air deflector 31 is increased along the air outlet direction, the velocity of the cold air flow is reduced due to the widening of the air flow channel in the process that the cold air flow passes through the first ventilation holes 3121, so that the heavier cold air flow is slowly dropped after being fully mixed with the local cold air close to the ventilation holes, thereby achieving a better refrigeration effect.
It should be noted that, although the above example is described in terms of first rotating the first air guiding plate 31 and then rotating the second air guiding plate 32, in practical applications, the second air guiding plate 32 and then the first air guiding plate 31 may be rotated, or both air guiding plates may be rotated at the same time. The skilled person can set the rotation sequence of the first air guiding plate 31 and the second air guiding plate 32 according to actual requirements. Similarly, the sequence of the current air outlet speed adjusting step of the air conditioner and the rotating step of the air guide plate group is not limited to the above example, and those skilled in the art may set the current air outlet speed adjusting step according to actual requirements, for example, the rotation of the air guide plate group may be controlled first, and then the air outlet speed of the air conditioner may be adjusted.
Referring to fig. 9, fig. 9 is a second flowchart illustrating a method for controlling an air deflector for cooling of an air conditioner according to an embodiment of the present invention. As shown in fig. 9, in a preferred embodiment, after step S30, the control method of the present invention further includes:
step S40: and acquiring the indoor environment temperature.
Step S50: judging whether the absolute value of the difference value between the indoor environment temperature and the set target temperature is greater than a second temperature threshold value:
if yes, go to step S60;
if not, step S40 is executed to continue collecting the indoor ambient temperature.
Step S60: and controlling the current air outlet speed of the air conditioner to be larger than a second wind speed threshold value, enabling the first air deflector to rotate to a third set position, enabling the second air deflector to rotate to a closed position, and enabling the first air deflector to rotate back and forth within a first set angle range.
In step S50, the second temperature threshold is equal to or greater than the first temperature threshold, and preferably ranges from 2 ℃ to 3 ℃.
In step S60, the third set position is at a third set angle with respect to the horizontal plane, the third set angle being greater than the first angle threshold. The minimum value of the first set angle range is not less than a first angle threshold value; the second wind speed threshold is greater than the first wind speed threshold.
Preferably, the first set angle range is 5 ° to 10 °, the third set angle falls within the first set angle range, and the value range of the second wind speed threshold is 4 m/s.
The control method of the invention realizes different refrigeration effects by monitoring the indoor environment temperature and controlling the movement of the first air deflector 31 and the second air deflector 32 according to the indoor environment temperature, and when the difference value between the indoor environment temperature and the set target temperature is less than or equal to the first temperature threshold, the control method gives the user a slightly-wind-feeling or even no-wind-feeling refrigeration experience by executing the micropore refrigeration mode (steps S10 to S30). When the difference between the indoor environment temperature and the set target temperature is greater than the second temperature threshold, it is considered that the current micro-hole refrigeration mode cannot meet the refrigeration requirement, the control method of the invention switches the micro-hole refrigeration mode to the direct blowing prevention refrigeration mode (step S60) to improve the refrigeration effect, so that the indoor environment temperature can approach the set target temperature again. Specifically, in the blow-through prevention cooling mode, the second air deflector 32 is rotated to the closed position to close the mounting port 3111, so that the air flow can be sent out by the first air deflector 31 only in a concentrated manner, and thus, the strength and speed of the air flow are ensured, and the blowing distance of the air flow is further increased. The third set angle is opened for the first air deflector 31, and the air outlet speed is increased to be larger than the second air speed threshold, so that a large amount of cold air flow can be sent out by the first air deflector 31, the difference between the indoor environment temperature and the set target temperature is effectively reduced, and the indoor environment temperature gradually returns to the set target temperature. Further, the first air deflector 31 is rotated back and forth within the first set angle range to increase the air supply range, thereby further improving the cooling effect.
It should be noted that, when the difference between the indoor ambient temperature and the set target temperature is greater than the second temperature threshold, the motion states of the first air deflector 31 and the second air deflector 32 are not limited to the above example, for example, when the absolute value of the difference between the indoor ambient temperature and the set target temperature is greater than the second temperature threshold, both the two air deflectors may be opened; or only the second air deflection 32 is opened while the first air deflection 31 is still in the closed position. Those skilled in the art can flexibly set the motion states of the first air deflector 31 and the second air deflector 32 after the absolute value of the difference between the indoor ambient temperature and the set target temperature is greater than the second temperature threshold according to actual conditions.
In addition, in some possible situations, the air outlet speed of the air conditioner may not be adjusted, and a person skilled in the art may select whether to change the air outlet speed of the air conditioner when the difference between the indoor ambient temperature and the set target temperature is greater than the second temperature threshold according to a specific situation.
Referring to fig. 10, fig. 10 is a third flowchart illustrating a method for controlling an air deflector used for cooling an air conditioner according to an embodiment of the present invention. As shown in fig. 10, the control method of the present invention will be further explained below in a specific embodiment, and in a specific embodiment, the control method of the present invention includes:
step S100: when the absolute value of the difference value between the indoor environment temperature and the set target temperature is less than or equal to 0.5 ℃, the current air outlet speed of the air conditioner is adjusted to be in the range of 0.3m/s to 1m/s, the first air deflector is rotated to the closed position, and the second air deflector is rotated to the closed position.
Step S200: judging whether the absolute value of the difference value between the indoor environment temperature and the set target temperature is greater than 0.5 ℃:
if yes, go to step S300;
if not, the process returns to step S100.
Step S300: the current air outlet speed of the air conditioner is controlled within the range of 4m/s to 6m/s, the first air guide plate is rotated to form a position of 10 degrees with the horizontal plane, and then the first air guide plate is rotated back and forth within the range of 5 degrees to 10 degrees.
It can be seen from the above examples that, when the indoor environment temperature approaches the set target temperature desired by the user, the control method of the present invention executes the micro-pore refrigeration mode, that is, the first air deflector 31 and the second air deflector 32 rotate to the closed position to completely block the air outlet and the installation opening, so that all the cold air flow blown out from the air outlet can only be blown out from the ventilation hole on the first air deflector, and at the same time, the air speed is adjusted to 0.3m/s to 1m/s, so that the air speed and the air volume become softer, after the soft cold air flow is blown out from the ventilation hole, the speed of the cold air flow is reduced, and the cold air flow is mixed with the local cold air around the ventilation hole and then slowly falls down, thereby, while the continuous refrigeration is performed to ensure the indoor environment temperature is stable, the refrigeration experience without wind feeling can be truly provided to the user.
When the difference between the indoor environment temperature and the set target temperature is greater than 0.5 ℃, the micropore refrigeration mode can not meet the refrigeration requirement at this time, and the control method of the invention improves the refrigeration effect by switching the micropore refrigeration mode to the direct blow prevention refrigeration mode (step S300), so that the indoor environment temperature can be close to the set target temperature again. Specifically, in the blow-through prevention cooling mode, the second air deflector 32 is rotated to the closed position to close the mounting port 3111, so that the air flow can be sent out by the first air deflector 31 only in a concentrated manner, and thus, the strength and speed of the air flow are ensured, and the blowing distance of the air flow is further increased. The first air deflector 31 is opened to a position which is 10 degrees to the second air deflector, and the air outlet speed is increased to a range of 4m/s to 6m/s, so that a large amount of cold air flow can be sent out by the first air deflector 31, the difference between the indoor environment temperature and the set target temperature is effectively reduced, and the indoor environment temperature gradually returns to the set target temperature. Further, the first air guiding plate 31 is rotated back and forth within the angle range of 5 ° to 10 ° so as to increase the air supply range, and the cooling effect is further improved. In addition, since the rotation angle of the first air guiding plate is small, the first air guiding plate 31 guides the air flow at an angle close to the horizontal angle, and the air flow does not directly blow to the user, so that the cooling effect is improved, and the comfort of the user is also considered.
In summary, in the embedded air conditioner of the present invention, the first air guide plate 31 is provided with the installation opening 3111, the second air guide plate 32 is embedded in the installation opening 3111, and the second air guide plate 32 is rotated to split and guide the airflow, so as to expand the air supply range. The embedded design can guarantee the outside roughness of air deflector group. Preferably, a first air deflector motor 33 is arranged on the inner side of the panel frame 11, a second air deflector motor 35 is arranged on the inner side of the first air deflector 31, and the first air deflector 31 and the second air deflector 32 are respectively driven by the first air deflector motor 33 and the second air deflector motor 35 to respectively and independently rotate so as to form various air supply modes, so that more various air supply requirements of users are met, and user experience is improved. According to the air deflector control method for air conditioner refrigeration, under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to 0.5 ℃, the first air deflector 31 and the second air deflector 32 are rotated to the closed positions, and the air outlet speed of the air conditioner is adjusted to 0.3m/s to 1m/s, so that the air conditioner can be used for giving no wind feeling experience to a user while continuously refrigerating to ensure the indoor environment temperature to be stable, and the comfort level of the user is improved. Further, when the difference between the indoor environment temperature and the set target temperature is greater than 0.5 ℃, the micropore refrigeration mode is switched to the direct blowing prevention refrigeration mode, so that the refrigeration effect is improved, the indoor environment temperature can be close to the set target temperature, meanwhile, the cold air flow can be prevented from being blown to a user for a long time, and the user experience is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The control method of the air deflector for the refrigeration of the air conditioner is characterized in that the air conditioner comprises a shell and an air deflector group, wherein the air deflector group comprises a first air deflector, an air outlet is formed in the shell, and the first air deflector is rotatably arranged on the shell so as to be capable of plugging or opening the air outlet;
the air guide plate group further comprises a second air guide plate, the second air guide plate is arranged on the first air guide plate in an embedded mode and can rotate non-coaxially relative to the first air guide plate, the rotation axis of the first air guide plate and the rotation axis of the second air guide plate are both horizontally arranged, and the first air guide plate and the second air guide plate can rotate independently; the first air deflector and/or the second air deflector are/is provided with a plurality of ventilation holes along the thickness direction, and the aperture of at least one part of the ventilation holes is increased along the air outlet direction so as to widen the air flow channel in the ventilation holes and reduce the air flow velocity;
the control method comprises the following steps:
under the condition that the air conditioner is in a refrigerating working condition, when the absolute value of the difference value between the indoor environment temperature and the set target temperature is smaller than or equal to a first temperature threshold, controlling the current air outlet speed of the air conditioner to be not larger than a first air speed threshold;
rotating the first air deflector to a first set position and rotating the second air deflector to a second set position;
the first set position and the horizontal plane form a first set angle, and the first set angle is not greater than a first angle threshold value; the second set position and the horizontal plane form a second set angle, and the second set angle is not larger than a second angle threshold.
2. The method of claim 1, wherein the first angular threshold ranges from 0 ° to 5 ° and the second angular threshold ranges from 0 ° to 5 °.
3. The method of claim 2, wherein the second set angle is less than or equal to the first set angle.
4. The air deflector control method of claim 3, wherein the step of controlling the current air-out speed of the air conditioner to be not greater than the first wind speed threshold comprises:
and controlling the current air outlet speed of the air conditioner within the range of 0.3m/s to 1 m/s.
5. The method of claim 1, wherein the method further comprises the step of,
the specific step of rotating the second air deflector to the second set position includes:
rotating the second air deflection plate to a closed position relative to the first air deflection plate;
the specific steps of rotating the first air deflector to a first set position include:
the first air deflector is rotated to a closed position.
6. The method of any of claims 1-5, further comprising, after the step of rotating the first air deflection plate to a first set position and the second air deflection plate to a second set position:
under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is larger than a second temperature threshold value, rotating the first air deflector to a third set position, and rotating the second air deflector to a closed position;
wherein the second temperature threshold is greater than or equal to the first temperature threshold; the third set position and the horizontal plane form a third set angle, and the third set angle is larger than the first angle threshold.
7. The method of claim 6, further comprising, after the step of rotating the first air deflection panel to a third set position:
enabling the first air deflector to rotate back and forth within a first set angle range;
the minimum value of the first set angle range is greater than or equal to the first angle threshold.
8. The method of claim 1, further comprising, after the step of rotating the first air deflection plate to a first set position and the second air deflection plate to a second set position:
controlling the air conditioner to be larger than a second wind speed threshold under the condition that the absolute value of the difference value between the indoor environment temperature and the set target temperature is larger than a second temperature threshold;
wherein the second wind speed threshold is greater than the first wind speed threshold, and the second temperature threshold is greater than or equal to the first temperature threshold.
9. An air conditioner, characterized in that the air conditioner comprises a controller for executing the air deflector control method of any one of claims 1 to 8.
10. The air conditioner of claim 9, wherein the air conditioner is a built-in air conditioner, the built-in air conditioner comprising a plurality of the air deflection assemblies.
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| CN111059714B (en) * | 2019-12-31 | 2021-09-28 | Tcl空调器(中山)有限公司 | Air conditioner blade control method and system, air conditioner and storage medium |
| CN112032840B (en) * | 2020-08-31 | 2022-10-25 | 青岛海尔空调电子有限公司 | Embedded air conditioner, air outlet control method thereof and computer readable storage medium |
| CN113251615A (en) * | 2021-05-11 | 2021-08-13 | 青岛海尔空调器有限总公司 | Air supply control method and device of air conditioner and air conditioner |
| CN114234282B (en) * | 2021-11-19 | 2024-03-19 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit and air conditioner |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant before: Haier Limited by Share Ltd, Qingdao |
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