Air conditioner indoor unit

Abstract

This application discloses an air conditioner indoor unit, relating to the technical field of air conditioning. The air conditioner indoor unit includes a casing, an indoor heat exchanger, an indoor fan, a radar detection module, a rotating shaft, and an adjusting motor. A front panel is provided on the front side of the casing. The indoor heat exchanger and indoor fan are located inside the casing, with the windward side of the indoor heat exchanger facing the air inlet of the casing, and the indoor fan located on the leeward side of the indoor heat exchanger. The radar detection module is used to detect the position of a human body. The rotating shaft is rotatably located on the side of the front panel facing the interior of the casing, with its axial direction along the length of the casing. The output shaft of the adjusting motor is connected to the rotating shaft. The air conditioner indoor unit provided by this application, by fixing the radar detection module to the rotating shaft and setting an adjusting motor to drive the rotating shaft to rotate, thereby rotating the radar detection module, adjusts the detection angle of the radar detection module, and thus adjusts the detection range of the radar detection module, reducing blind spots in human body detection and improving the accuracy of detection results.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning, and more particularly to indoor air conditioning units. Background Technology

[0002] With the advancement of technology, some air conditioner indoor units are equipped with millimeter-wave radar. This radar detects the position of a person, allowing the indoor unit to automatically adjust the airflow direction and volume based on that position. This provides users with a more personalized and intelligent user experience.

[0003] In related technologies, millimeter-wave radar is typically fixed to the inside of the casing panel, with the transmitter and receiver facing the user. However, this installation method has a large margin of error, resulting in limited detection range, poor measurement performance, and the possibility of undetectable cases. These problems are particularly pronounced in wall-mounted air conditioner indoor units due to differences in installation height.

[0004] Therefore, it can be seen that the existing methods of installing millimeter-wave radar on air conditioner indoor units cannot well meet the needs of users. Utility Model Content

[0005] To address the shortcomings of related technologies, this application provides an air conditioning indoor unit that mounts a radar detection module on a rotating shaft and sets an adjusting motor to drive the rotating shaft to rotate, thereby adjusting the detection angle of the radar detection module and thus adjusting the detection range of the radar detection module, reducing blind spots in human body detection, and improving the accuracy of detection results.

[0006] This application provides an indoor unit for an air conditioner, comprising: The casing has an air inlet on the top and an air outlet on the lower front side; the front side of the casing has a front panel. The indoor heat exchanger is located inside the casing, with its windward side facing the air inlet of the casing. Indoor fan: The indoor fan is located inside the casing and is situated on the leeward side of the indoor heat exchanger. The radar detection module is located on the front side inside the casing and is used to detect the position of a human body. The rotating shaft is rotatably located on the side of the front panel facing the inside of the housing. The axis of the rotating shaft is set along the length of the housing, and the rotating shaft is fixedly connected to the radar detection module. The adjustment motor is located inside the housing and is used to drive the rotating shaft to rotate the radar detection module.

[0007] In this technical solution, a radar detection module is installed to detect the position of a person, allowing the indoor air conditioning unit to intelligently adjust its operating mode or parameters based on the person's location, thus better meeting user needs. The radar detection module is fixedly mounted on a rotating shaft, and an adjusting motor drives the shaft to rotate, thereby adjusting the detection angle and detection range of the radar module, reducing blind spots in human detection and improving the accuracy of the detection results.

[0008] In some embodiments of this application, the rotating shaft passes through the radar detection module along the axial direction of the rotating shaft; the adjusting motor is located near one end of the rotating shaft.

[0009] In this technical solution, a rotating shaft passes through the radar detection module along its own axial direction, ensuring a stable connection between the radar detection module and the rotating shaft. When the shaft rotates, the radar detection module rotates smoothly and synchronously, preventing wobbling or misalignment and ensuring the accuracy of the radar detection module's detection angle adjustment.

[0010] In some embodiments of this application, a bracket is provided on the side of the front panel facing the inside of the housing, the bracket is used for the passage of a rotating shaft, and the rotating shaft is rotatably connected to the bracket.

[0011] In the technical solution, the bracket not only facilitates the connection between the rotating shaft and the front panel, but also provides a support point for the rotating shaft, enabling it to rotate stably. The bracket also reduces the friction during the rotation of the rotating shaft, making the rotation process smoother, while also dispersing the pressure on the rotating shaft and extending its service life.

[0012] In some embodiments of this application, two supports are provided, arranged along the axial direction of the rotating shaft, with the rotating shaft passing through the two supports.

[0013] In the technical solution, two supports are set up to provide support for the rotating shaft, thereby further increasing the stability of the rotating shaft during rotation.

[0014] In some embodiments of this application, the output shaft of the regulating motor is provided with a first gear, and the rotating shaft is provided with a second gear. The second gear meshes with the first gear so that the regulating motor drives the rotating shaft to rotate.

[0015] In the technical solution, by setting a first gear on the output shaft of the regulating motor and a second gear on the rotating shaft, and by using the meshing of the second gear with the first gear to drive the rotating shaft to rotate, the rotational motion of the regulating motor can be smoothly and accurately transmitted to the rotating shaft, thereby achieving effective control of the rotation of the radar detection module. Furthermore, the rotation angle of the radar detection module can be controlled by controlling the number of rotations of the output shaft of the regulating motor.

[0016] In some embodiments of this application, the transmission ratio between the second gear and the first gear is n, and the angle of rotation of the radar detection module is 360° / n when the output shaft of the adjusting motor rotates one revolution.

[0017] In this technical solution, by limiting the transmission ratio between the second gear and the first gear to n, the radar detection module rotates 360° / n for every one revolution of the adjusting motor's output shaft. By appropriately setting the transmission ratio, the rotation angle of the radar detection module can be precisely controlled, making the adjustment process more refined and meeting different detection requirements.

[0018] In some embodiments of this application, the transmission ratio between the second gear and the first gear is 18, and the output shaft of the adjusting motor rotates one revolution, causing the radar detection module to rotate 20°.

[0019] In the technical solution, when the transmission ratio is set to 18, adjusting the motor output shaft to rotate one revolution causes the radar detection module to rotate 20°, enabling the radar detection module to accurately switch between different detection positions, thereby achieving precise detection of the human body position in different indoor areas and providing a reliable basis for the intelligent control of the air conditioner.

[0020] In some embodiments of this application, a first plane is defined, which is arranged in a vertical direction and parallel to the length direction of the housing; The radar detection module has a second plane defined on the side facing the front panel; The second plane and the first plane form an angle, which is the detection angle of the radar detection module.

[0021] In the technical solution, the angle formed by the first plane and the second plane of the radar detection module is clearly defined as the detection angle of the radar detection module.

[0022] In some embodiments of this application, a Hall sensor is provided inside the housing and is mounted on the radar detection module; when the radar detection module is at its maximum detection angle, the distance between the Hall sensor and the front panel is minimal.

[0023] In the technical solution, a Hall sensor is installed on the radar detection module so that the distance between the Hall sensor and the front panel changes when the radar detection module rotates, thereby detecting whether the radar detection module is at the maximum detection angle position; by setting the Hall sensor to detect whether the radar detection module is at the maximum detection angle position, the rotation angle of the radar detection module is calibrated.

[0024] In addition, this application also provides an air conditioner indoor unit, comprising: The casing has an air inlet on the top and an air outlet on the lower front side. The indoor heat exchanger is located inside the casing, with its windward side facing the air inlet of the casing. Indoor fan: The indoor fan is located inside the casing and is situated on the leeward side of the indoor heat exchanger. The radar detection module is located on the front side inside the casing and is used to detect the position of a human body. A first plane is defined, which is set vertically and parallel to the length direction of the casing; a second plane is defined on the side of the radar detection module facing the front panel; the second plane and the first plane are defined to form an angle, which is the detection angle of the radar detection module; The rotating shaft is rotatably mounted on the front panel and located inside the housing. The rotating shaft is fixedly connected to the radar detection module. The adjustment motor is located inside the housing. It drives the rotating shaft to rotate the radar detection module in order to adjust the included angle.

[0025] In this technical solution, a radar detection module is installed to detect the position of a person, allowing the indoor air conditioning unit to intelligently adjust its operating mode or parameters based on the person's location, thus better meeting user needs. The radar detection module is fixedly mounted on a rotating shaft, and an adjusting motor drives the shaft to rotate, thereby adjusting the detection angle and detection range of the radar module, reducing blind spots in human detection and improving the accuracy of the detection results.

[0026] In the above embodiment, the indoor unit of the air conditioner installs the radar detection module on a rotating shaft and sets an adjusting motor to drive the rotating shaft to rotate, so that the rotating shaft drives the radar detection module to rotate, thereby adjusting the detection angle of the radar detection module, and thus adjusting the detection range of the radar detection module, reducing blind spots in human body detection, and improving the accuracy of detection results. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the indoor unit of the air conditioner in this application; Figure 2 This is a schematic diagram of the casing structure in one embodiment of the indoor unit of the air conditioner in this application; Figure 3 This is a schematic diagram of the structure of the air conditioner indoor unit in one embodiment of the present application, in which the radar detection module, rotating shaft and regulating motor are installed on the front panel; Figure 4 for Figure 3 Enlarged view of a section at point B in the middle; Figure 5 for Figure 3 Sectional view of AA; Figure 6This is a schematic diagram of the detection angle of the radar detection module in one embodiment of the indoor unit of the air conditioner in this application; Figure 7 This is a schematic diagram of the assembly structure of the radar detection module, rotating shaft and regulating motor in one embodiment of the air conditioner indoor unit of this application; Figure 8 This is a schematic diagram of the structure of the air conditioner indoor unit in one embodiment of the present application, where the radar detection module is installed on the rotating shaft; Figure 9 This is a schematic diagram of the structure of the indoor unit of the air conditioner in this application when the rotating shaft is mounted on the bracket; Figure 10 This is a schematic diagram of the regulating motor in one embodiment of the air conditioner indoor unit of this application; Figure 11 This is a flowchart illustrating the operation of the Hall sensor in one embodiment of the indoor unit of an air conditioner in this application. Figure 12 This is a flowchart illustrating the calibration of the radar detection module rotation angle in one embodiment of the air conditioner indoor unit of this application.

[0028] In the diagram, 100 is the casing; 200 is the front panel; 300 is the air guide plate; 400 is the regulating motor; 500 is the rotating shaft; and 600 is the radar detection module. 101. Air inlet of the casing; 102. Air outlet of the casing; 103. First plane; 210. Bracket; 410. First gear; 420. Output shaft; 510. The second gear; 601. Second plane. Detailed Implementation

[0029] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0030] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0031] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0032] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0033] The air conditioning indoor unit provided in this application can have various implementation forms. For example, it can be an air conditioning indoor unit with a fresh air function or an air conditioning indoor unit without a fresh air function. Figure 1 and Figure 2 This is one specific implementation of the indoor unit of the air conditioner in this application.

[0034] like Figure 1 As shown, the housing 100 forms the overall appearance of the indoor unit of the air conditioner. The rear side of the housing 100 faces the wall, and the front side of the housing 100 faces the user. The left and right directions of the housing 100 are the length directions of the housing 100, and the direction from the bottom to the top of the housing 100 is the height direction of the housing 100.

[0035] In some application scenarios, the housing 100 is usually installed at the top of the room or in the upper space of the room.

[0036] An air inlet 101 is formed on the housing 100, and air from outside the housing 100 enters the interior of the housing 100 through the air inlet 101.

[0037] In some embodiments, the housing air inlet 101 is located at the top of the housing 100 and is arranged along the length of the housing 100 to increase the size of the housing air inlet 101, thereby increasing the air intake of the indoor unit of the air conditioner.

[0038] An air outlet 102 is formed on the housing 100, and the air inside the housing 100 flows to the outside of the housing 100 through the air outlet 102.

[0039] The air outlet 102 of the housing is located at the lower front side of the housing 100 so that the airflow can be blown directly to the active area at the front of the housing 100, shortening the transmission distance and reducing energy loss. In addition, the unobstructed layout of the front side of the housing 100 can ensure smooth airflow diffusion and avoid airflow attenuation due to obstruction from the side or rear.

[0040] In some embodiments, the housing air outlet 102 is located below the front panel 200.

[0041] The air outlet 102 of the casing is arranged along the length of the casing 100 so that the air outlet 102 of the casing has a large size, thereby giving the indoor unit of the air conditioner a large air volume and thus ensuring the air outlet effect of the indoor unit of the air conditioner.

[0042] like Figure 1 As shown, the indoor unit of the air conditioner includes a front panel 200, which is located on the front side of the housing 100 and is used to cover the components installed inside the housing 100 to ensure the aesthetics of the indoor unit of the air conditioner.

[0043] It should be noted that, in the art, the front panel 200 is generally considered to be part of the housing 100, but in this embodiment, for ease of description, the front panel 200 and the housing 100 are regarded as two parallel components.

[0044] like Figure 1 As shown, the indoor unit of the air conditioner includes an air guide plate 300, which is rotatably disposed at the air outlet 102 of the casing and is used to open or close the air outlet 102 of the casing. The air guide plate 300 is rotatably connected to the casing 100, and the rotation axis of the air guide plate 300 is set along the length direction of the casing 100.

[0045] In some embodiments, a guide vane is provided at the air outlet 102 of the housing, and the guide vane is used to adjust the airflow direction.

[0046] The indoor unit of the air conditioner includes a guide motor, which is installed in the casing 100. The guide motor is used to drive the guide vanes to rotate, thereby adjusting the angle of the guide vanes and thus adjusting the direction of airflow.

[0047] In some embodiments, the rotation axis of the guide vane is perpendicular to the air outlet direction and perpendicular to the length direction of the housing 100, so that the guide vane has a good guiding effect on the airflow.

[0048] It should be noted that wind turbines and wind deflectors are conventional technologies in this field and will not be elaborated upon here.

[0049] The indoor unit of the air conditioner includes an indoor heat exchanger, which is located inside the casing 100. The air-facing side of the indoor heat exchanger faces the air inlet 101 of the casing and is used to exchange heat with the air passing through the indoor heat exchanger to form air conditioning air to meet the user's cooling or heating needs.

[0050] It should be noted that air conditioning can produce cold air, hot air, or even air at room temperature.

[0051] The indoor unit of an air conditioner includes an indoor fan, which is used to facilitate contact between air and the indoor heat exchanger, thereby increasing the heat exchange effect of the indoor heat exchanger. By operating the indoor fan, air from outside the casing 100 enters the casing 100 through the casing air inlet 101, exchanges heat with the indoor heat exchanger, and then flows out of the room through the casing air outlet 102 to cool or heat the indoor environment, thereby meeting the user's needs.

[0052] The indoor fan is located on the leeward side of the indoor heat exchanger, which is positioned close to the air inlet 101 of the casing so that the air can come into contact with the indoor heat exchanger as soon as possible after entering the casing 100, thereby increasing the heat exchange efficiency of the indoor heat exchanger. The indoor fan is positioned close to the air outlet 102 of the casing so that the air conditioning air can have a larger flow velocity when leaving the casing 100, thereby enabling the air conditioning air to be transported over a longer distance indoors.

[0053] In some embodiments, the indoor fan is a cross-flow fan, and the axial direction of the cross-flow fan is arranged along the length direction of the casing 100.

[0054] The indoor unit of an air conditioner includes a controller, which is connected to the air guide motor and the indoor fan, and is used to control the operation of the air guide motor and the indoor fan.

[0055] like Figure 4 As shown, the indoor unit of the air conditioner includes a radar detection module 600, which is located inside the housing 100 and is used to detect the position of a human body.

[0056] In some embodiments of this application, the radar detection module 600 uses millimeter-wave radar for human body position detection. Compared with other radar technologies (such as infrared, ultrasonic, or lidar), millimeter-wave radar has strong penetration and anti-interference capabilities: it can penetrate the front panel 200 and is not affected by hot wind, temperature difference, or airflow disturbance, accurately detecting stationary / micro-moving human bodies (such as sleep breathing), overcoming the defect of infrared sensors being susceptible to temperature interference; millimeter-wave radar detects human body position and activity only through electromagnetic wave reflection point cloud, without collecting optical images, avoiding the privacy leakage risk caused by cameras; moreover, the millimeter-wave chip module is small in size (about the size of a coin), and its power consumption is much lower than that of lidar, making it easy to integrate into the casing 100 for long-term operation.

[0057] In some embodiments, the radar detection module 600 is connected to the controller. After detecting the position of a human body, the radar detection module 600 transmits the human body position information to the controller. The controller controls the rotation of the air guide motor according to the detection information of the radar detection module 600 to adjust the angle of the air guide blades, thereby adjusting the airflow direction and avoiding the airflow blowing directly on the human body and causing discomfort.

[0058] In other embodiments, the controller may also control the indoor fan to rotate based on the detection information from the radar detection module 600, thereby adjusting the speed of the indoor fan and thus adjusting the air volume of the indoor unit of the air conditioner.

[0059] It should be noted that the adjustment of operating parameters by the indoor unit of an air conditioner based on the position of a person is existing technology in this field and will not be elaborated here.

[0060] Because the installation height of the indoor unit varies under different installation environments, and the detection range of the radar detection module 600 differs with these heights, the accuracy of the radar detection module 600's human detection results varies. Therefore, the installation height of the indoor unit affects the detection performance of the radar detection module 600. In practical applications, it is impossible to achieve uniformity in the installation height of multiple indoor units of the same model.

[0061] Based on this, in this application, by setting a rotating shaft 500 and an adjusting motor 400, the radar detection module 600 is installed on the rotating shaft 500, and the adjusting motor 400 is used to drive the rotating shaft 500 to rotate, so as to adjust the angle of the radar detection module 600, thereby ensuring the detection effect of the radar detection module 600 at different heights.

[0062] Specifically, such as Figure 4 As shown, the indoor unit of the air conditioner includes a rotating shaft 500, which is rotatably disposed on the side of the front panel 200 facing the inside of the housing 100. The rotating shaft 500 is fixedly connected to the radar detection module 600.

[0063] like Figures 7-9 As shown, the rotating shaft 500 is arranged along the length direction of the housing 100 so that the rotating shaft 500 can rotate along the length direction of the housing 100, thereby adjusting the detection range of the radar detection module 600.

[0064] like Figure 6 As shown, a first plane 103 is defined, which is arranged in the vertical direction and parallel to the length direction of the housing 100.

[0065] It should be noted that the first plane 103 is a vertical plane.

[0066] The radar detection module 600 has a second plane 601 defined on the side facing the front panel 200. An angle θ is defined between the first plane 103 and the second plane 601. The angle θ is the detection angle of the radar detection module 600.

[0067] It should be noted that in some embodiments, when the first plane 103 is parallel to the second plane 601, the detection angle of the radar detection module 600 is the smallest, that is, the included angle θ is 0°, and when the first plane 103 is perpendicular to the second plane 601, the detection angle of the radar detection module 600 is the largest, that is, the included angle θ is 90°.

[0068] In some embodiments, the pivot 500 is disposed through the center of the radar detection module 600 so that the radar detection module 600 is mounted on the pivot 500.

[0069] It should be noted that the radar detection module 600 is not just a radar detection chip, but also includes a mounting shell or mounting base for mounting and fixing the chip. The rotating shaft 500 passes through the mounting shell or mounting base, and the chip is connected to the controller. This is common knowledge in the field, and the specific structure of the radar detection module 600 will not be described in detail.

[0070] like Figures 7-9 As shown, a bracket 210 is provided on the side of the front panel 200 facing the inside of the housing 100. The bracket 210 is used for the rotating shaft 500 to pass through, and the rotating shaft 500 is rotatably connected to the bracket 210. On the one hand, it is convenient for the rotating shaft 500 to be installed on the front panel 200 and to be rotatably connected to the front panel 200. On the other hand, the bracket 210 can provide support for the rotating shaft 500 during rotation, increasing the stability of the rotating shaft 500 during rotation.

[0071] In some embodiments, two supports 210 are provided, which are arranged along the axial direction of the rotating shaft 500. The rotating shaft 500 passes through the two supports 210, and the two supports 210 are provided at the two ends of the rotating shaft 500 to further increase the smoothness of the rotation of the rotating shaft 500.

[0072] like Figure 4 As shown, the indoor unit of the air conditioner includes an adjustment motor 400, which is located inside the housing 100. The output shaft 420 of the adjustment motor 400 is connected to one end of the rotating shaft 500 to drive the rotating shaft 500 to rotate the radar detection module 600, thereby adjusting the detection angle of the radar detection module 600.

[0073] The adjusting motor 400 is connected to the controller, and the controller controls the adjusting motor 400 to rotate in order to adjust the detection angle of the radar detection module 600.

[0074] In some embodiments of this application, such as Figure 4 and Figure 7 As shown, the output shaft 420 of the regulating motor 400 is provided with a first gear 410, and the rotating shaft 500 is provided with a second gear 510. The second gear 510 meshes with the first gear 410 so that the regulating motor 400 drives the rotating shaft 500 to rotate.

[0075] The second gear 510 is located at one end of the rotating shaft 500, and the adjusting motor 400 is located at the axial end of the rotating shaft 500 to reduce the space occupied by the adjusting motor 400 and the rotating shaft 500 in the height direction of the housing 100.

[0076] The transmission ratio between the second gear 510 and the first gear 410 is n. When the output shaft 420 of the adjusting motor 400 rotates one revolution, the radar detection module 600 rotates by an angle of 360° / n. That is, when the output shaft 420 of the adjusting motor 400 rotates one revolution, the detection angle of the radar detection module 600 changes by 360° / n.

[0077] In some embodiments, the transmission ratio between the second gear 510 and the first gear 410 is 18. When the output shaft 420 of the adjusting motor 400 rotates one revolution, the radar detection module 600 rotates 20°. That is, when the output shaft 420 of the adjusting motor 400 rotates one revolution, the detection angle of the radar detection module 600 changes by 20°.

[0078] Because the radar detection module 600 is prone to rotation errors after multiple rotations, for example, if the current detection angle of the radar detection module 600 is 20°, and the adjusting motor 400 drives the radar detection module 600 to rotate three times, the total rotation angle of the three rotations is 350°. Theoretically, the detection angle of the radar detection module should be 10° at this time. However, due to the existence of rotation errors, the detection angle of the radar detection module is 12°. If the angle of the radar detection module 600 is not calibrated, the rotation error may become larger and larger, reducing the accuracy of the detection results of the radar detection module 600.

[0079] Based on this, in this application, a Hall sensor is set up to detect whether the radar detection module 600 has reached the maximum detection angle, so as to calibrate the rotation angle of the radar detection module 600.

[0080] Specifically, the indoor unit of the air conditioner includes a Hall sensor, which is located inside the housing 100. The Hall sensor is used to detect whether the radar detection module 600 is at the maximum detection angle, or to detect whether the detection angle of the radar detection module 600 is at its maximum, so as to calibrate the rotation angle of the radar detection module 600 and avoid the radar detection module 600 from having errors in rotation angle after multiple adjustments, which would affect the detection results of the radar detection module 600.

[0081] In some embodiments, a Hall sensor is mounted on a radar detection module 600, and the Hall sensor determines whether the detection angle of the radar detection module 600 is at its maximum by judging the distance from the Hall sensor to the front panel 200.

[0082] When the detection angle of the radar detection module 600 is at its maximum, the first plane 103 is perpendicular to the second plane 601. It can be assumed that the radar detection module 600 is perpendicular to the front panel 200, and the distance from the Hall sensor to the front panel 200 is at its minimum.

[0083] like Figure 11As shown, the working logic of the Hall sensor is as follows: the controller controls the adjustment motor 400 to rotate, so that the adjustment motor 400 drives the rotating shaft 500 and the radar detection module 600 to rotate, thereby adjusting the detection angle of the radar detection module 600. The Hall sensor is used to detect whether the radar detection module 600 has rotated to the maximum detection angle position and transmits the detection information to the controller.

[0084] When the detection angle of the radar detection module 600 is at its maximum, the rotation angle of the radar detection module 600 is calibrated based on whether the millimeter-wave radar detection module 600 has reached the position of the maximum detection angle, according to the Hall sensor, so as to avoid errors in the angle adjustment process.

[0085] like Figure 12 As shown, when the radar detection module 600 performs rotation angle calibration, it first enters the angle self-adjusting human detection mode, adjusts the radar detection module 600 to its initial position, and sets the detection angle of the radar detection module 600 to the initial angle. Then, the motor 400 drives the radar detection module 600 to rotate a preset angle, and the radar detection module 600 detects the position of the person once and updates the detection angle of the radar detection module 600. The Hall sensor detects whether the radar detection module 600 has rotated to the position of the maximum detection angle. When the radar detection module 600 is at the position of the maximum detection angle, the initial position of the radar detection module 600 is adjusted to the position of the minimum detection angle. When the radar detection module 600 is not at the position of the maximum detection angle, the motor 400 drives the radar detection module 600 to rotate a preset angle once until the radar detection module 600 is at the position of the maximum detection angle.

[0086] It should be noted that in some embodiments, the initial position of the radar detection module 600 is usually the position with the minimum detection angle. During calibration, although the controller controls the radar detection module 600 to return to the initial position, due to the existence of rotation error, the initial position is no longer the position with the minimum detection angle.

[0087] The following section uses the initial detection angle of the radar detection module 600 as 0° and the radar detection module 600 rotating 15° each time as an example to introduce in detail the calibration method of the rotation angle of the radar detection module 600.

[0088] The controller controls the radar detection module 600 to enter the angle self-adjusting human detection mode, adjusting the radar detection module 600 to its initial position, making the detection angle of the radar detection module 600 the initial angle, recorded as the first detection angle. The controller reads the detection information from the radar detection module 600 and calculates the location and distance of the person based on the first detection angle. The controller then drives the adjustment motor 400 to rotate the radar detection module 600 by 15°, updating the detection angle of the radar detection module 600, recorded as the second detection angle. The controller reads the Hall sensor data to determine if the radar detection module 600 has rotated to the maximum detection angle position. If so, the rotation angle of the radar detection module 600 is accurate; otherwise, the updated detection information from the radar detection module 600 is read, and the location of the person is calculated based on the second detection angle. Based on the distance, the controller drives the adjusting motor 400 to rotate the radar detection module 600 another 15°, updating the detection angle of the radar detection module 600, which is recorded as the third detection angle. The Hall sensor data is read to determine if the radar detection module 600 has rotated to the position of the maximum detection angle. If so, the rotation angle of the radar detection module 600 is accurate; otherwise, the updated detection information of the radar detection module 600 is read, and the above steps are repeated until the radar detection module 600 rotates to the position of the maximum detection angle. After the radar detection module 600 rotates to the position of the maximum detection angle, the position of the radar detection module 600 is adjusted, that is, the initial position of the radar detection module 600 is placed at the position of the minimum detection angle, making the detection angle of the radar detection module 600 0°, and the calibration is complete.

[0089] It should be noted that when calibration begins, although the controller controls the radar detection module 600 to return to the initial detection angle, the actual detection angle of the radar detection module 600 may not be 0° if there is an error in the rotation angle of the radar detection module 600.

[0090] The above-mentioned air conditioner indoor unit has at least one or more of the following advantages: 1. By mounting the radar detection module 600 on the rotating shaft 500 and setting the adjusting motor 400 to drive the rotating shaft 500 to rotate, the rotating shaft 500 drives the radar detection module 600 to rotate, thereby adjusting the detection angle of the radar detection module 600, and thus adjusting the detection range of the radar detection module 600, reducing the blind spot of human body detection and improving the accuracy of detection results.

[0091] 2. The motor 400 drives the rotating shaft 500 to rotate through the first gear 410 and the second gear 510, and limits the transmission ratio between the second gear 510 and the first gear 410. By adjusting the number of rotations of the output shaft 420 of the motor 400, the rotation angle of the radar detection module 600 is precisely controlled.

[0092] 3. Install a Hall sensor to calibrate the rotation angle of the radar detection module 600, so as to avoid errors in the rotation angle after multiple adjustments of the radar detection module 600.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0094] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing has an air inlet on the top and an air outlet on the lower front side; the front side of the housing has a front panel. An indoor heat exchanger is disposed inside the casing, with the windward side of the indoor heat exchanger facing the air inlet of the casing. An indoor fan is provided inside the casing and is located on the leeward side of the indoor heat exchanger. A radar detection module, located on the front side inside the housing, is used to detect the position of a human body. A rotating shaft is rotatably disposed on the side of the front panel facing the interior of the housing. The axial direction of the rotating shaft is arranged along the length direction of the housing, and the rotating shaft is fixedly connected to the radar detection module. An adjustment motor is located inside the housing and is used to drive the rotating shaft to rotate the radar detection module.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The rotating shaft passes through the radar detection module along its axial direction; the adjusting motor is located near one end of the rotating shaft.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The front panel has a bracket on the side facing the inside of the housing, the bracket is used for the rotating shaft to pass through, and the rotating shaft is rotatably connected to the bracket.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The bracket is configured as two brackets, which are arranged along the axial direction of the rotating shaft, and the rotating shaft passes through the two brackets.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The output shaft of the regulating motor is provided with a first gear, and the rotating shaft is provided with a second gear. The second gear meshes with the first gear so that the regulating motor drives the rotating shaft to rotate.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The transmission ratio between the second gear and the first gear is n. When the output shaft of the regulating motor rotates one revolution, the radar detection module rotates at an angle of 360° / n.

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The transmission ratio between the second gear and the first gear is 18. When the output shaft of the regulating motor rotates one revolution, the radar detection module rotates 20°.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, Define a first plane, which is arranged vertically and parallel to the length direction of the housing; The radar detection module has a second plane defined on one side facing the front panel; The second plane and the first plane form an angle, which is the detection angle of the radar detection module.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, A Hall sensor is installed inside the housing and is mounted on the radar detection module; when the radar detection module is at its maximum detection angle, the distance between the Hall sensor and the front panel is minimized.

10. An indoor unit for an air conditioner, characterized in that, include: The housing has an air inlet on the top and an air outlet on the lower front side. An indoor heat exchanger is disposed inside the casing, with the windward side of the indoor heat exchanger facing the air inlet of the casing. An indoor fan is provided inside the casing and is located on the leeward side of the indoor heat exchanger. A radar detection module, located on the front side inside the housing, is used to detect the position of a human body. Define a first plane, which is arranged vertically and parallel to the length direction of the housing; The radar detection module has a second plane defined on one side facing the front panel; the second plane and the first plane are defined at an angle, which is the detection angle of the radar detection module; A rotating shaft is rotatably mounted on the front panel and located inside the housing, and the rotating shaft is fixedly connected to the radar detection module; An adjustment motor is located inside the housing. The adjustment motor is used to drive the rotating shaft to rotate the radar detection module in order to adjust the included angle.

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