Air deflector control method and device of indoor unit and heat pump air conditioner

Abstract

The invention discloses an air deflector control method and device of an indoor unit and a heat pump air conditioner, the air deflector control device comprises a first air deflector and a second air deflector, synchronous or coordinated movement can be achieved through a driving device, and therefore the direction and distribution of airflow are better controlled; driving devices of the first air deflector and the second air deflector can provide a more flexible air guiding effect, and the air conditioning requirements in different scenes are met; the air flow efficiency and uniformity can be improved, and the requirements of users are met.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and in particular to a method and device for controlling an air guide plate of an indoor unit, and a heat pump air conditioner. Background Art

[0002] As people's living standards continue to improve, there are higher requirements for the comfort and diversity of air supply of heat pump air conditioners. As an important indicator of customer experience when heat pump air conditioners are running, wind feeling is also attracting more and more attention. Studies have found that the air guide plate has a great influence on the flow direction of the airflow when the indoor unit of the heat pump air conditioner is running.

[0003] The structure of the air guide plate of an ordinary air conditioner is fixed and cannot be changed, which may lead to uneven air distribution and cause differences in cold and warm areas in the room. The wind direction can usually only be adjusted within a certain range, and its rotation angle cannot be too large, which limits the adjustment of the air supply direction, reduces human comfort, and cannot meet the needs of air supply diversity.

[0004] Nowadays, many users have strong requirements for the comfort of wind feeling, and require air conditioners to be able to blow wind toward people or away from people; therefore, it is necessary to develop an air-guiding method that can output air according to different temperatures and can achieve the effect of blowing wind toward people or away from people. Summary of the invention

[0005] The purpose of the present invention is to provide an air guide plate control method and device for an indoor unit and a heat pump air conditioner, which solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A method for controlling an air guide plate of an indoor unit, the method comprising: s1: Determine the air outlet demand of the indoor unit, including heating state and cooling state, and the indoor unit is provided with a heat pump air conditioner air guide plate; s2: Determine the air outlet demand of the air guide plate of the heat pump air conditioner, including the people-facing mode and the people-avoiding mode. The air guide plate of the heat pump air conditioner includes a first air guide plate, a second air guide plate and a driving device. The driving device is used to drive the first air guide plate and the second air guide plate to rotate at an angle; s3: Determine the air outlet position of the indoor unit. The indoor unit is provided with an electric control system. The electric control system scans the current environment and divides the scanned area. The polar coordinates are fed back to the driving device by scanning the area where the person is located through radar. The driving device controls the rotation of the first air guide plate and the second air guide plate.

[0007] Preferably, in the welcoming mode; The inward turning air supply angle of the first air guide plate is a first air supply angle θ1, and the first air supply angle θ1 is inward turning 0°-90°; The air supply angle of the second air guide plate is a second air supply angle θ2, and the second air supply angle θ2 is inverted 0°-90°; In the avoidance mode, the outward-turned air supply angle of the first air guide plate is the third air supply angle θ3, and the third air supply angle θ3 is turned outward by 0°-60°.

[0008] Preferably, in the heating state / cooling state welcoming mode; Determine the wall-mounted height of the indoor unit as a first preset height H1, determine the height of a person as a second preset height h2, and calculate the height difference H0 between the indoor unit and the person, where H0=H1-H2; Determine the distance between the indoor unit and the person's current location as r; Calculate the first air supply angle θ1 of the first air guide plate, where tanθ1=r / (H1-H2); Calculate the second air supply angle θ2 of the second air guide plate, where tanθ2=r / H1.

[0009] Preferably, in the avoidance mode of the refrigeration state, the first air guide plate is turned outward to within the range of a third air supply angle θ3, the range of the third air supply angle θ3 is 30°-60°, and the second air supply angle θ2 of the second air guide plate is turned to 15°.

[0010] Preferably, in the avoidance mode of the heating state, the first air supply angle θ1 of the first air guide plate is turned inward to 0°, and the second air supply angle θ2 of the second air guide plate is turned inward to 90°.

[0011] The air guide plate device of the indoor unit is configured to execute the above-mentioned air guide plate control method.

[0012] Preferably, the wind deflector device includes a first wind deflector, a second wind deflector and a driving device, and the driving device is used to drive the first wind deflector and the second wind deflector to rotate at an angle.

[0013] Preferably, the driving device includes a first driving device and a second driving device, the first driving device is used to drive the first air guide plate to rotate at an angle, and the second driving device is used to drive the second air guide plate to rotate at an angle.

[0014] Preferably, the wind guide plate device also includes a wind sweeping blade, and the wind sweeping blade is driven by a stepping motor to rotate an angle.

[0015] The heat pump air conditioner provided by the present invention is provided with the above-mentioned air guide plate device.

[0016] The present invention adopts a double air guide plate, each of which is respectively equipped with a stepper motor for driving, and a pulse signal is used to control the angle of the rotating shaft to achieve a set angle of adjustment, thereby realizing horizontal air outlet, angle air outlet and vertical air outlet, and combining with the left and right swing of the air sweeping blade driven by the stepper motor to realize left and right air supply; Compared with the prior art, the technical solution provides a method and device for controlling the air guide plate of an indoor unit and a heat pump air conditioner, which has the following advantages: Provide more uniform air delivery. The double air guide plate design can deliver air to every corner of the room, reducing regional temperature differences and air supply dead corners. 2. Improve air flow: It can make air flow more stable and reduce the discomfort caused by direct cold or hot wind to the human body; 3. Adjust the wind direction: You can adjust the wind direction as needed to make the air flow more in line with your personal preferences. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a schematic diagram of the structure of the first air guide plate 64° and the second air guide plate 32° in the present invention; Figure 2 This is a schematic diagram of the structure of the hot air avoiding position in the present invention; Figure 3 This is a schematic diagram of the structure of the cooling air avoidance position in the present invention; Figure 4 It is a schematic diagram of the structure of the cooling air avoiding airflow state in the present invention; Figure 5 This is a schematic diagram of the structure of the hot air avoiding airflow state in the present invention; Figure 6 It is a schematic diagram of the air supply range of the heat pump air conditioner test in the present invention; Figure 7 It is a diagram of air supply data after the angle of the air guide plate of the heat pump air conditioner refrigeration is adjusted in the present invention; Figure 8 It is a wind speed cloud diagram of the air supply range of the heat pump air conditioner in the present invention; Fig. 9 It is a diagram of the air supply range of the default angle of the refrigeration air guide plate of the heat pump air conditioner in the present invention; Fig.10 This is a schematic diagram of the heat pump air conditioner in the present invention sweeping the wind towards people and to the left; Fig.11 This is a schematic diagram of the heat pump air conditioner in the present invention sweeping the wind towards people and to the right; Fig.12 It is a schematic diagram of the area division of the heat pump air conditioning radar in the present invention.

[0019] As shown in the drawings: heat pump air conditioner 10, heat pump air conditioner air guide plate 20, first air guide plate 21, second air guide plate 22. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution in the embodiment of the present invention will be clearly and completely described below in combination with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. All other embodiments obtained by ordinary people in this field without creative work belong to the protection scope of the present invention. The preferred embodiments of the present invention will be described in more detail below with reference to the drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described here. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0021] The terms used in the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] In the description of the present invention, it is necessary to understand that the terms "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various components in the present invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of the present invention, the first component may also be referred to as the second component, and similarly, the second component may also be referred to as the first component. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] refer to Figures 1 to 11 The air guide plate control method and device of the present invention include a first air guide plate 21, a second air guide plate 22, a first driving device and a second driving device; the driving device uses a pulse signal to control the angle of the rotating shaft to adjust the set angle so that the first air guide plate 21 and the second air guide plate 22 can reach a suitable angle. To be precise, a transmission shaft at one end of the first driving device is connected to the first air guide plate 21, and the first air guide plate 21 is independently controlled; a transmission shaft at one end of the second driving device is connected to the second air guide plate 22, and the second air guide plate 22 is independently controlled; it should be understood that the first air guide plate 21 and the second air guide plate 22 can rotate in coordination, or they can be independently controlled to rotate by the driving device, that is, the first air guide plate 21 and the second air guide plate 22 can rotate asynchronously, which effectively expands the air guide angle of the lower air guide plate, thereby improving the air guide effect of the heat pump air conditioner 10; during operation, synchronous or coordinated movement can be achieved through the driving device, so as to better control the direction and distribution of the airflow; the driving devices of the first air guide plate 21 and the second air guide plate 22 can provide a more flexible air guide effect, which helps to improve the efficiency and uniformity of air flow and meet user requirements.

[0028] By adjusting the angle of the air guide plate, the first air guide plate 21 can be adjusted in the vertical direction, while the second air guide plate 22 can be adjusted in the horizontal direction, which can change the direction and speed of the air outlet of the air conditioner, drive the double air guide plates to outlet air horizontally, at an angle, vertically, and left and right, and achieve uniform distribution and comfort of indoor air, thereby obtaining better comfort and a breeze feeling.

[0029] See also Fig.12 The heat pump air conditioner has an electronic control system that can divide the area to be scanned. Taking the electronic control system of the millimeter wave radar as an example, from the top view, the radar divides the range that can be scanned into nine areas. The millimeter wave radar scans the indoor area to determine the range where the person is located, and feeds back the distance and angle to the drive device. For example, when a person is in the second area, the radar detects the human body coordinates and feeds them back to the first drive device and the second drive device. The drive device controls the wind deflector to move downward, the first wind deflector 21 has an angle range of 0°-40°, and the second wind deflector 22 has an angle range of 55°-90°, so that the air supply range is closer; when a person is in the eighth area, the radar detects the human body coordinates and feeds them back to the drive device, and the drive device controls the wind deflector to move upward, the first wind deflector 21 has an angle range of 59°-90°, and the second wind deflector 22 has an angle range of 0°-60°, so that the air supply range is farther.

[0030] The realization of the airflow blowing along with the human body disclosed in the present invention is mainly divided into an implementation method and an implementation result.

[0031] Implementation method 1: The radar scans the area where the person is located and feeds the polar coordinates back to the drive device, which controls the rotation of the wind deflector. Figure 6 When a person approaches, the air guide plate moves downward, and the air supply range is closer; when a person moves away, the air guide plate moves upward, and the air supply range is farther.

[0032] The calculation results are as follows: given that the wall-mounted height H1 of the heat pump air conditioner is 2.4m, the person's position is r=0.65m away from the heat pump air conditioner, the person's height H2=2.1m, that is, the height difference between the indoor unit and the human body HO=H1-H2, the angle of the first air guide plate 21 is θ1, and the angle of the second air guide plate 22 is θ2.

[0033]

[0034]

[0035] Find: ,

[0036] The range of θ1 is 0°-65°, and the range of θ2 is 15°-90°.

[0037] Result: According to the above calculation results, the angle of rotation of the first air guide plate (the range of θ1) is selected as 64°, and the angle of rotation of the second air guide plate (the range of θ2) is selected as 90°. Figure 7 It can be proved that there is wind within the above calculated rotation angle range of the air guide plate (0°-65° for the first air guide plate, 15°-90° for the second air guide plate), so that the air supply range can always cover the human body and the wind blows towards the person.

[0038] The default air supply range is as follows: Fig. 9 ,contrast Figure 7 Can't realize airflow following people's movement.

[0039] Implementation method 2: Use radar to scan the area where the person is and feed back the polar coordinates to the drive device, which controls the rotation of the wind sweeping blades. Fig.10 ,When the human body moves to the left side of the heat pump air conditioner, the radar detects that the human body is between the three areas on the left side, and feeds back the distance and angle to the driving device, which controls the sweeping blade to move to the left; similarly, Fig.11 ,When the human body moves to the right side of the heat pump air conditioner, the radar detects that the human body is between the three areas on the right side, and feeds back the distance and angle to the driving device, which controls the wind sweeping blade to move to the right.

[0040] The realization of avoiding direct blowing of wind away from people disclosed in the present invention is mainly divided into a heating state and a cooling state. The polar coordinates are fed back to a driving device by scanning the area where people are located with a radar, and the driving device controls the rotation of the wind guide plate.

[0041] In the cooling state, the first air guide plate 21 is turned outward to avoid wind, and the second air guide plate 22 cooperates with the first air guide plate 21 to rotate.

[0042] like Figure 4 The first wind guide plate 21 is turned outward to provide an upward angle for the airflow. According to this initial angle, the wind speed can be decomposed into a lateral wind speed component Vx and a longitudinal wind speed component Vy. Due to gravity and energy conservation, Vy will be reduced to 0, and the longitudinal air supply reaches a highest critical point.

[0043] The calculation results are as follows: Given that the angle of the second wind guide plate 22 is 15°, the angle of the first wind guide plate 21 is θ3, the wind speed at the wind outlet is V=4m / s, the wind speed of the longitudinal component is Vy=Vcosθ3, and the gravity acceleration is g=9.8m / s2; (1) Assuming that θ3=30°, Vy=gt=0 at the highest air supply point;

[0044]

[0045]

[0046] The longitudinal height of air supply h1=0.61m is obtained; Assuming θ3=60°, when the air supply is at its highest point, Vy=gt=0

[0047]

[0048]

[0049] The longitudinal height of air supply is obtained as h2=0.2m; Result: According to the above calculation results, the rotation angle range of the first air guide plate 21 is 30°-60°, and the rotation angle of the second air guide plate 22 is 15°, so that the cold air blows upward, and the vertical height range is 0.2-0.62m When a human body approaches the heat pump air conditioner, the radar detects that the human body is between the three front areas, and feeds back the distance and angle to the driving device. The driving device controls the first air guide plate 21 to turn outward and downward, so that the air outlet can avoid direct blowing of the human body and the air outlet volume can be larger; similarly, when the human body is away from the heat pump air conditioner, the radar detects that the human body is between the three outer areas, and feeds back the distance and angle to the driving device. The driving device controls the first air guide plate 21 to rotate upward, so that the cold air blows upward, the air supply height is higher, and the wind can also avoid direct blowing of the human body.

[0050] The design of upward air supply in cooling state can ensure that the air supply range always avoids the human body within the range of θ3. The wind blows away from people, and the cold air with a larger density will sink, so that the airflow forms a circulation in the house, which can promote the circulation of cold and hot air in the room, and improve the human comfort to the wind while avoiding people.

[0051] See also Figure 5 In the heating state, the first air guide plate 21 is fixed at 0°, and the second air guide plate 22 is fixed at 90°, so that the hot air can only blow downward. The density of the hot air is low, and it will be squeezed up by the cold air, which can increase the temperature of the area in a short time, forming a hot and cold cycle, ensuring the uniformity of the air flow, so that the air supply range is always in front of the human feet, avoiding the human body area, and at the same time improving the air supply comfort to a certain extent. In summary, the double air guide plates applied for in the present invention can achieve the adjustment of the set angle by installing respective stepper motors on the first air guide plate 21 and the second air guide plate 22 for driving, and using a pulse signal to control the angle of the rotating shaft. The horizontal air outlet, angle air outlet, vertical air outlet and left and right air outlet of the air guide plate can be adjusted according to different operating modes of the air conditioner. The area of ​​the second air guide plate 22 is larger than that of the first air guide plate 21, which can increase the length of the air outlet channel, so that the heat pump air conditioning air can be delivered farther, thereby accelerating the efficiency of the heat pump air conditioner 10 in changing the temperature.

[0052] The scheme of the present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For the part that is not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required by the present invention. In addition, it can be understood that the steps in the method of the embodiment of the present invention can be adjusted in order, combined and deleted according to actual needs, and the structure in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs.

[0053] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. The air guide plate control method of the indoor unit is characterized by , the method comprises: s1: determining the air outlet demand of the indoor unit, including a heating state and a cooling state, wherein the indoor unit is provided with a heat pump air conditioner air guide plate (20); s2: determining the air outlet demand of the heat pump air conditioner air guide plate (20), including a people-facing mode and a people-avoiding mode, the heat pump air conditioner air guide plate (20) comprising a first air guide plate (21), a second air guide plate (22) and a driving device, the driving device being used to drive the first air guide plate (21) and the second air guide plate (22) to rotate at an angle; s3: determining the air outlet position of the indoor unit, the indoor unit being provided with an electric control system, the electric control system scanning the current environment and dividing the scanned area, scanning the area where the person is located by radar and feeding back the polar coordinates to the drive device, the drive device controlling the rotation of the first air guide plate (21) and the second air guide plate (22).

2. The air guide plate control method of the indoor unit according to claim 1, characterized in that: When in welcoming mode; The inward-turned air supply angle of the first air guide plate (21) is a first air supply angle θ1, and the first air supply angle θ1 is inward-turned 0°-90°; The air supply angle of the second air guide plate (22) is a second air supply angle θ2, and the second air supply angle θ2 is inverted 0°-90°; In the avoidance mode, the outward-turned air supply angle of the first air guide plate (21) is a third air supply angle θ3, and the third air supply angle θ3 is an outward-turned angle of 0°-60°.

3. The air guide plate control method of the indoor unit according to claim 2, characterized in that: In the heating state / cooling state welcoming mode; Determine the wall-mounted height of the indoor unit as a first preset height H1, determine the height of the person as a second preset height H2, and calculate the height difference H0 between the indoor unit and the person, where H0=H1-H2; Determine the distance between the indoor unit and the person's current location as r; Calculating a first air supply angle θ1 of the first air guide plate (21), wherein tanθ1=r / (H1-H2); The second air supply angle θ2 of the second air guide plate (22) is calculated, where tan θ2=r / H1.

4. The air guide plate control method of the indoor unit according to claim 2, characterized in that: In the avoidance mode of the refrigeration state, the first air guide plate (21) is turned outward to within a third air supply angle θ3, the third air supply angle θ3 being within a range of 30°-60°, and the second air guide plate (22) is turned to a second air supply angle θ2 to 15°.

5. The air guide plate control method of the indoor unit according to claim 2, characterized in that: In the avoidance mode of the heating state, the first air guide plate (21) is turned inwards to a first air supply angle θ1 to 0°, and the second air guide plate (22) is turned inwards to a second air supply angle θ2 to 90°.

6. The air guide plate device of the indoor unit is characterized by: The air deflector device is configured to execute the air deflector control method according to any one of claims 1 to 5.

7. The air deflector device according to claim 1, characterized in that: The wind deflector device comprises a first wind deflector (21), a second wind deflector (22) and a driving device, wherein the driving device is used to drive the first wind deflector (21) and the second wind deflector (22) to rotate at a certain angle.

8. The air deflector device according to claim 1, characterized in that: The driving device comprises a first driving device and a second driving device, the first driving device being used to drive the first air guide plate (21) to rotate at an angle, and the second driving device being used to drive the second air guide plate (22) to rotate at an angle.

9. The air deflector device according to claim 1, characterized in that: The wind guide plate device also includes a wind sweeping blade, and the wind sweeping blade is driven by a stepping motor to rotate at an angle.

10. A heat pump air conditioner (10), characterized in that The heat pump air conditioner (10) has an air guide plate device as described in any one of claims 6 to 9.

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