Air conditioner indoor unit, control method and air conditioner

Abstract

This disclosure provides an indoor air conditioning unit, a control method, and an air conditioner. The indoor air conditioning unit includes an air duct, an air outlet, and an air guide mechanism. The air outlet includes a first air outlet end and a second air outlet end opposite to each other. Airflow flows in the air duct and from the first air outlet end to the second air outlet end. The air guide mechanism is movable to the air outlet and located between the first air outlet end and the second air outlet end, so as to guide a portion of the airflow flowing from the air duct to the second air outlet end through the air guide mechanism. According to this disclosure, the downward distance of the airflow can be effectively reduced, the forward blowing distance can be increased, and long-distance air delivery can be achieved. Furthermore, by guiding a portion of the airflow forward, the airflow disturbance between this portion of the airflow and the airflow flowing to the second air outlet end can be effectively reduced, making the blown airflow smoother, further increasing the air delivery distance, and ultimately increasing the overall air delivery distance of the unit, improving the front airflow feel and user comfort.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioning indoor unit, a control method and an air conditioner. Background Art

[0002] With the development of air-conditioning technology, more and more cabinet air conditioners with upper and lower air outlets are developed. Simplifying the structure of cabinet air conditioners with upper and lower air outlets and improving their comfort have become the main development direction of technological breakthroughs. The upper and lower air outlet ducts use centrifugal fan blades to form main and auxiliary air ducts for upper and lower air outlets to ensure the air volume. This type of cabinet air conditioner with upper and lower air outlets is a mid-to-high-end product in the current air-conditioning market. Its blowing feeling is worse than that of traditional cabinet air supply with front air supply, and the air supply distance is short. In particular, the lower air outlet is close to the ground, which has greater wind resistance. As a result, the lower air outlet of the upper and lower air outlet cabinet has low air volume and wind speed, and cannot quickly spread heat and cold to the user space area far away from the air conditioner, which is not conducive to the air conditioning comfort experience.

[0003] Since the blowing feeling of the upper and lower air-outlet cabinet air conditioner in the prior art is worse than that of the traditional front-air supply cabinet, the air supply distance is short, and especially the lower air outlet is close to the ground, which faces greater wind resistance, the lower air outlet of the upper and lower air-outlet cabinet has low air volume and wind speed, and cannot quickly diffuse heat and cold to the user space area far away from the air conditioner, which is not conducive to the air conditioning comfort experience and other technical problems, therefore, the present invention discloses a research and design of an air-conditioning indoor unit, a control method and an air conditioner.

[0004] Public Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the blowing feeling of the upper and lower air outlet cabinet air conditioner is worse than that of the traditional front air supply cabinet and the air supply distance is short, thereby providing an air conditioner indoor unit, a control method and an air conditioner.

[0006] In order to solve the above-mentioned problems, the present disclosure provides an air-conditioning indoor unit, which includes an air duct, an air outlet and an air guide mechanism, the air outlet includes a first air outlet end and a second air outlet end relative to each other, the air flow flows in the air duct and flows from the first air outlet end to the second air outlet end, and the air guide mechanism can move to a position in the air outlet and between the first air outlet end and the second air outlet end, so as to be able to guide part of the air flow in the air duct flowing to the second air outlet end through the air guide mechanism.

[0007] In some embodiments, the air guide mechanism can move to a first position range so that the air guide mechanism guides part of the airflow flowing toward the second air outlet end, and the air guide mechanism can also move to a second position range so that the air guide mechanism does not block and guide part of the airflow flowing toward the second air outlet end.

[0008] In some embodiments, the air duct includes a main air duct and an auxiliary air duct, both of which are connected to the air outlet, the auxiliary air duct is away from the wall where the air conditioner is installed relative to the main air duct, and the first position range of the air guide mechanism is located in the auxiliary air duct.

[0009] In some embodiments, the air conditioner indoor unit also includes a panel, and the secondary air duct is arranged close to the panel relative to the main air duct; and / or the secondary air duct includes a secondary air duct interface so that airflow can enter the secondary air duct from the secondary air duct interface.

[0010] In some embodiments, the first air outlet end is located above the second air outlet end, and the air flow direction in the air duct is from top to bottom. When the air guide mechanism moves to the first position range, the air guide mechanism can guide part of the air flow toward the second air outlet end toward the front of the air conditioner indoor unit.

[0011] In some embodiments, a rotating shaft and a driving motor are further included, wherein the air guiding mechanism is connected to the rotating shaft, and the driving motor is connected to the rotating shaft to drive the air guiding mechanism to rotate via the rotating shaft.

[0012] In some embodiments, the air guide mechanism is a hanging air guide mechanism, including a first part, a second part and a third part. The first part is fixedly installed on the rotating shaft, the second part is also fixedly installed on the rotating shaft, and the third part is connected between the first part and the second part. The third part has an air guide surface, which can deflect the airflow blowing toward the air guide surface at an angle and guide it to be blown out.

[0013] In some embodiments, it also includes a volute and a volute lower plate, the volute forms the air duct and the air outlet, the volute lower plate is located at the lower end of the volute and connected to the volute, so that the airflow coming out of the air duct passes through the volute lower plate and is blown out from the air outlet.

[0014] In some embodiments, the width of the horizontal cross-section of the airflow surface on the volute lower plate gradually increases from the rear to the front of the air conditioner indoor unit; and / or the airflow surface of the volute lower plate is an arc-shaped surface structure.

[0015] In some embodiments, when the air duct includes a main air duct and a secondary air duct, the volute includes a first volute, a second volute and a bottom shell, the first volute is arranged on the bottom shell, the second volute is also arranged on the bottom shell, the interior of the first volute forms the main air duct, and the interior of the second volute forms the secondary air duct.

[0016] In some embodiments, the volute lower plate is located at the lower ends of the main air duct and the auxiliary air duct at the same time, the airflow coming out of the main air duct passes through the volute lower plate and is blown out from the air outlet, and the airflow coming out of the auxiliary air duct can be discharged through the air guide mechanism, or pass through the volute lower plate and be blown out from the air outlet.

[0017] The present disclosure further provides a control method for an air-conditioning indoor unit as described in any of the preceding items, wherein when the air-conditioning indoor unit further includes a human position detector, the control method comprises:

[0018] A detection step for detecting a distance L between an indoor person and a panel of the air conditioner indoor unit;

[0019] A determination step, for determining the relationship between L and a first preset distance L1;

[0020] The control step is used to control the air guide mechanism to move and retract when L≤L1, and not guide the wind in the air duct; when L>L1, control the air guide mechanism to move to the air outlet to guide the wind in the air duct.

[0021] In some embodiments, the detecting step is used to detect the state of a person for a second preset time t2 at intervals of the first preset time period t1, and to detect the distance L between the person and the panel.

[0022] In some embodiments, when there are multiple people in the room:

[0023] The detection step is also used to detect the distance L between all people in the room and the panel;

[0024] A determination step, for determining the relationship between all L and a first preset distance L1;

[0025] The control step is used to control the air guide mechanism to move and retract when all L are ≤L1, and not guide the wind in the air duct; when at least one L>L1, control the air guide mechanism to move to the air outlet to guide the wind in the air duct.

[0026] The present disclosure also provides an air conditioner, which includes the air conditioner indoor unit described in any of the preceding items.

[0027] The air conditioner indoor unit, control method and air conditioner provided by the present disclosure have the following beneficial effects:

[0028] 1. The air conditioner indoor unit provided by the present invention is provided with an air guide mechanism at the air outlet, and the air guide mechanism can move to the middle of the air outlet (i.e., the position between the first air outlet end and the second air outlet end), so that the airflow that should originally flow to the second air outlet end can be effectively guided forward, and the downward flow distance of the airflow can be effectively reduced, thereby effectively increasing the distance blown forward, and realizing long-distance air supply; at the same time, since part of the airflow is guided forward, the airflow disturbance between the part of the airflow and the airflow flowing to the second air outlet end can be effectively reduced, so that the airflow blown out from the air guide mechanism and the airflow blown out from the second air outlet end are both smoother, thereby further increasing the air supply distance, and finally increasing the air supply distance of the whole machine, improving the frontal blowing feeling, and improving the user comfort;

[0029] 2. The present invention also sets a volute lower plate at the lower end of the air duct, and the width of the horizontal cross-section of the air flow through the surface of the volute lower plate gradually increases from the back to the front, so that the airflow on the vertical volute lower plate can form a wide-angle diffused air supply in the leading direction, thereby increasing the air outlet range and improving the indoor comfort; and in combination with the main air duct and the auxiliary air duct, the air-conditioning cabinet unit of the present invention has a lower air outlet connected to the main and auxiliary air ducts of the air duct for air guidance, and uses a rotatable hanging air guide mechanism for air guidance, which can realize two air guide modes. Opening the air guide mechanism can supply air over a long distance, and folding the air guide mechanism can realize short-distance and wide-angle diffused air supply. The two modes can improve the user's comfort experience in different usage scenarios; the present invention also provides an intelligent control method for realizing the two air guide mechanisms, which can realize automatic and intelligent switching of the two air guide modes of the lower air outlet, thereby improving the user's operability and the comfort experience of using the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front structural diagram of the lower air outlet of the indoor unit (cabinet unit) of the air conditioner disclosed in the present invention (air guide mechanism is opened);

[0031] Figure 2 It is a side view of the internal structure of the lower air outlet of the air conditioner indoor unit (cabinet unit) disclosed in the present invention (air guide mechanism is opened);

[0032] Figure 3 It is a front structural diagram of the lower air outlet of the indoor unit (cabinet unit) of the air conditioner disclosed in the present invention (the air guide mechanism is folded up);

[0033] Figure 4 It is a side view of the internal structure of the lower air outlet of the indoor unit (cabinet unit) of the air conditioner disclosed in the present invention (the air guide mechanism is folded up);

[0034] Figure 5 It is a schematic diagram of the front air guide structure of the lower air outlet of the indoor unit (cabinet unit) of the air conditioner disclosed in the present invention (showing the lower plate of the volute);

[0035] Figure 6 It is a schematic diagram of the three-dimensional structure of the main and auxiliary air ducts and the lower plate of the volute at the lower air outlet of the present invention;

[0036] Figure 7 It is a three-dimensional structural schematic diagram of the main and auxiliary air ducts, the lower plate of the volute, and the hanging air guide mechanism at the lower air outlet of the present invention;

[0037] Figure 8 is a schematic diagram of the three-dimensional structure of the hanging air guide mechanism disclosed in the present invention;

[0038] Fig. 9 It is a flow chart of the control method of the air conditioner indoor unit disclosed in the present invention.

[0039] The reference numerals are as follows:

[0040] 1. Air duct; 11. Main air duct; 12. Auxiliary air duct; 121. Auxiliary air duct interface; 2. Air outlet; 21. First air outlet end; 22. Second air outlet end; 3. Air guide mechanism; 31. First part; 32. Second part; 33. Third part; 331. Air guide surface; 4. Panel; 5. Rotating shaft; 51. Air guide mechanism mounting hole; 52. Motor mounting hole; 6. Driving motor; 7. Volute; 71. First volute; 72. Second volute; 73. Bottom shell; 8. Volute lower plate; 9. Human body position detector. DETAILED DESCRIPTION

[0041] like Figure 1-8 As shown, the present disclosure provides an air-conditioning indoor unit, which includes an air duct 1, an air outlet 2 and an air guiding mechanism 3, the air outlet 2 includes a first air outlet end 21 and a second air outlet end 22, the air flow flows in the air duct 1 and flows from the first air outlet end 21 to the second air outlet end 22, the air guiding mechanism 3 can move to the air outlet 2 and is located between the first air outlet end 21 and the second air outlet end 22, so as to be able to guide part of the air flow in the air duct 1 that flows to the second air outlet end 22 through the air guiding mechanism 3 (that is, blow it out toward the front of the air-conditioning indoor unit, the front is the side facing the user, and the back is the side close to the wall where the air conditioner is installed).

[0042] The air-conditioning indoor unit provided by the present invention is provided with an air guiding mechanism at the air outlet, and the air guiding mechanism can move to the middle of the air outlet (i.e., the position between the first air outlet end and the second air outlet end), so as to effectively guide the airflow that should originally flow to the second air outlet end toward the front, effectively reduce the distance that the airflow flows downward, and thus can effectively increase the distance blown toward the front, and realize long-distance air supply; at the same time, since part of the airflow is guided toward the front, the airflow disturbance between the part of the airflow and the airflow flowing to the second air outlet end can also be effectively reduced, so that the airflow blown out from the air guiding mechanism and the airflow blown out from the second air outlet end are both smoother, thereby further increasing the air supply distance, and ultimately increasing the air supply distance of the whole machine, improving the front blowing feeling, and improving the user comfort.

[0043] like Figure 1 As shown, the lower air outlet of a cabinet air conditioner with lower air outlet is generally designed at the bottom of the decorative panel, and the air outlet generally needs to match the appearance of the decorative panel to avoid the lower air outlet position damaging the overall appearance of the cabinet.

[0044] The present invention discloses a hanging air guide mechanism for a double-duct open lower air outlet of a cabinet air conditioner. The air guide mechanism has two states to realize two air guide modes of the lower air outlet. When the hanging air guide mechanism is in the open state, the main and auxiliary air duct airflows are separated so that the auxiliary air duct airflow located in the front cannot interfere with the main air duct airflow, thereby increasing the air supply distance of the main air duct, and guiding the auxiliary air duct airflow to the front of the cabinet at the auxiliary air duct outlet position, so that the air outlet of the auxiliary air duct blows directly forward, thereby increasing the air supply distance of the auxiliary air duct. The combination of the two can increase the air supply distance of the lower air outlet and improve the comfort of the whole machine.

[0045] When the air guide mechanism is in the retracted state, the obstruction of the air guide mechanism to the air flow in the air duct is reduced, and the wind passes through the lower plate of the volute to form a diffuse air supply state, which can significantly increase the cooling and heating rates of the area directly in front of the cabinet and improve comfort.

[0046] A human position detector is also arranged directly in front of the cabinet, including but not limited to a detection device equipped with infrared, sound wave, and image sensors to feedback the human position. The installation position is on the front panel of the cabinet, including any area at the top, middle, and bottom that does not block the detector's detection position; the detector feeds back the user's position in real time, and the downwind outlet will adjust the air guide mechanism's air guide state and the air supply mode in real time according to the feedback to improve user comfort.

[0047] In some embodiments, the air guide mechanism 3 can move to a first position range so that the air guide mechanism 3 guides part of the airflow flowing to the second air outlet end 22, and the air guide mechanism 3 can also move to a second position range so that the air guide mechanism 3 does not block and guide part of the airflow flowing to the second air outlet end 22. This is the preferred structural form and movement mode of the air guide mechanism of the present disclosure, that is, when the air guide mechanism moves to the first position range, it can block and guide the airflow, and play an effective role in guiding the air forward. The first position range is preferably a position where the air guide mechanism rotates to the lower side, such as Figure 2 As shown, when the air guide mechanism moves to the second position range, the airflow shielding and air flow guidance can be cancelled. The second position range is preferably the position where the air guide mechanism is rotated upward and retracted, such as Figure 4 As shown, the airflow is guided and blown out from the lower plate of the volute at the bottom of the air outlet, forming two different air outlet modes, namely, forward long-distance air outlet and forward wide-diffused air outlet.

[0048] In some embodiments, the air duct 1 includes a main air duct 11 and a secondary air duct 12, both of which are connected to the air outlet 2, and the secondary air duct 12 is away from the wall where the air conditioner is installed relative to the main air duct 11, and the first position range of the air guide mechanism 3 is located in the secondary air duct 12. This is a preferred structural form of the air duct disclosed in the present invention, that is, the main air duct can be blown out from the main air duct, preferably from the bottom of the volute lower plate, to achieve a wide-width diffused air outlet, and the airflow can be introduced through the secondary air duct and guided and blown forward through the air guide mechanism to achieve a forward long-distance air outlet mode.

[0049] The color of the hanging air guide mechanism is transparent or consistent with the color of the decorative plate and the lower plate of the volute to ensure the consistency of the appearance color. The air guide mechanism has two states, such as Figure 2 As shown in the figure, when the air guide mechanism is open, the airflow of the auxiliary air duct will all hit the air guide surface of the hanging air guide mechanism, so that the airflow of the auxiliary air duct will no longer flow downward to interfere with the airflow of the main air duct, and will flow directly forward, shortening the downward flow distance of the wind in the auxiliary air duct (reducing the amount of air flowing to the ground, thereby increasing the forward air outlet distance), increasing the forward air supply distance, and at the same time allowing the airflow of the main air duct to flow more smoothly along the air guide surface of the lower plate of the volute, thereby increasing its air supply distance, thereby increasing the air supply distance of the whole machine and improving comfort. Judging from its speed cloud map and actual test conditions, at this time, the air supply from the lower air outlet is converged forward, with a fast wind speed, and can deliver cold and heat to areas far in front of the air conditioner; Figure 4When the air guide mechanism is in the retracted state, the obstruction of the air guide mechanism to the air flow in the duct is reduced, so that the air output of the duct is significantly improved. At this time, the arc surface of the lower plate of the volute serves as the only air guide structure, which can form a diffuse air supply mode, and can quickly cool and heat the area near the front of the cabinet, thereby improving the comfort of the local area. Judging from the speed cloud map and the actual test conditions, the air supply from the lower air outlet is diffused forward at a large air supply angle, which can quickly radiate cold and heat to the area near and wide in front of the air conditioner.

[0050] In some embodiments, the air conditioner indoor unit further comprises a panel 4, the panel 4 is located directly in front of the air conditioner indoor unit, the secondary air duct 12 is arranged close to the panel 4 relative to the main air duct 11; and / or, the secondary air duct 12 comprises a secondary air duct interface 121, so that the air flow can enter the secondary air duct 12 from the secondary air duct interface 121. This is a preferred structural form of the present disclosure, the secondary air duct is located in front of the main air duct, that is, the secondary air duct is arranged close to the panel located in the front, and the main air duct is arranged close to the wall; the secondary air duct interface is used to act on the air intake of the secondary air duct. The front is the side of the air conditioner indoor unit facing the user, and the back is the side close to the wall where the air conditioner is installed.

[0051] In some embodiments, the air conditioner indoor unit further includes a human position detector 9, which is disposed on the panel 4 and can detect the distance between the human body and the panel. The present disclosure can also effectively monitor the distance between the human body and the panel of the air conditioner through the human position detector, and can control whether the air guide mechanism moves to guide the air flow according to the distance between the human body and the air conditioner panel, thereby selecting which mode to control the air outlet (front long-distance air outlet or front wide diffusion air outlet).

[0052] like Fig. 9 As shown, the cabinet using the above-mentioned downwind air guide technology solution is equipped with a human position detector, including but not limited to infrared, sound wave, image and other positioning detection methods. The detector is based on Fig. 9 The detection method shown in the figure feeds back the user's position information to control the forward and reverse rotation and step angle of the driving motor of the hanging air guide mechanism through the main control chip of the air conditioner, so as to control the air guide mechanism to be in the folded and opened state, realize the intelligent air supply of the lower air outlet of the cabinet air conditioner, improve the user experience comfort, and improve the product grade.

[0053] In some embodiments, the first air outlet end 21 is located above the second air outlet end 22, and the airflow in the air duct 1 flows from top to bottom. When the air guide mechanism moves to the first position range, the air guide mechanism 3 can guide part of the airflow flowing to the second air outlet end 22 toward the front of the air conditioner indoor unit. This is the preferred structural form of the air outlet disclosed in the present invention, that is, the first air outlet end is located above the second air outlet end, the air outlet is a lower air outlet, and the airflow flows from the air duct to the air outlet from top to bottom.

[0054] In some embodiments, a rotating shaft 5 and a driving motor 6 are further included, the air guide mechanism 3 is connected to the rotating shaft 5, and the driving motor 6 is connected to the rotating shaft 5, so as to drive the air guide mechanism 3 to rotate through the rotating shaft 5. This is the preferred structural form of the air guide mechanism disclosed in the present invention, that is, the air guide mechanism is driven to rotate by means of a driving motor and a rotating shaft, and the movement of the air guide mechanism is achieved by rotating to the auxiliary air duct to guide the airflow forward to the outlet, and rotating to the outside of the auxiliary air duct to cancel the guidance, thereby completing the mode conversion of the air outlet.

[0055] In some embodiments, the wind guide mechanism 3 is a hanging wind guide mechanism, including a first part 31, a second part 32 and a third part 33, wherein the first part 31 is fixedly provided on the rotating shaft 5, the second part 32 is also fixedly provided on the rotating shaft 5, and the third part 33 is connected between the first part 31 and the second part 32, and the third part 33 has a wind guide surface 331, which can deflect and guide the airflow blowing toward the wind guide surface to be blown out at an angle. The wind guide surface is preferably a curved surface. This is the preferred structural form of the wind guide mechanism disclosed in the present invention, that is, the first part and the second part are connected to the rotating shaft, and the third part between the first part and the second part can be driven to rotate to form a wind guiding effect. The wind guide surface on the third part can play an effective wind guiding role, and can guide the airflow blowing downward to the front and blow it out.

[0056] like Figure 6 , 7 The hanging air guide mechanism shown in 8 is installed on the lower plate of the volute, and there is a mounting shaft on the air guide mechanism which is installed in the mounting hole on the lower plate of the volute. A motor shaft mounting hole is provided at one end of the mounting shaft of the lower plate of the volute to install a driving motor, which can drive the air guide mechanism to rotate; the lower plate of the volute is connected to the main air duct, and has an auxiliary air duct interface which can be connected to the auxiliary air duct, so that the airflows of the main and auxiliary air ducts can be guided to the air guide arc surface of the lower plate of the volute to supply air to the front of the cabinet; the air guide of the lower plate of the volute has an arc surface which can change the direction of the airflow in the air duct to flow in the front of the air conditioner, and when the hanging air guide mechanism is opened, the air guide surface is perpendicular to the airflow direction of the auxiliary air duct.

[0057] In some embodiments, a volute 7 and a volute lower plate 8 are further included, wherein the volute 7 forms the air duct 1 and the air outlet 2, and the volute lower plate 8 is located at the lower end of the volute 7 and connected to the volute 7, so that the airflow from the air duct 1 passes through the volute lower plate 8 and is blown out from the air outlet 2. The present disclosure can effectively form an air duct and an air outlet through the volute, and the structure of the volute lower plate can guide the airflow blown to the lower end to the front.

[0058] In some embodiments, the width of the horizontal cross section of the airflow passing surface of the volute lower plate 8 gradually increases from the rear to the front of the air conditioner indoor unit; and / or, the airflow passing surface of the volute lower plate 8 is an arc surface structure. This is the preferred structural form of the volute lower plate disclosed in the present invention, that is, the width of the horizontal cross section of the airflow passing surface of the volute lower plate gradually increases from the rear to the front, that is, in the projection of the vertical plane, the volute lower plate gradually increases along the direction from the rear to the front, so that the width of the air outlet can be gradually increased, forming a diffuse air outlet with an increased width; the volute lower plate with an arc surface structure effectively plays the role of diffusing and guiding the air.

[0059] The present invention also sets a volute lower plate at the lower end of the air duct, and the width of the horizontal cross-section of the air flow through the surface of the volute lower plate gradually increases from the back to the front, so that the airflow on the vertical volute lower plate can form a wide-angle diffused air supply in the leading direction, thereby increasing the air outlet range and improving the indoor comfort; and in combination with the main air duct and the auxiliary air duct, the air-conditioning cabinet unit of the present invention has a lower air outlet connected to the main and auxiliary air ducts for air guidance, and uses a rotatable hanging air guide mechanism for air guidance, which can realize two air guide modes. Opening the air guide mechanism can supply air over a long distance, and folding the air guide mechanism can realize short-distance and wide-angle diffused air supply. The two modes can improve the user's comfort experience in different usage scenarios; the present invention also provides an intelligent control method for realizing the two air guide mechanisms, which can realize automatic and intelligent switching of the two air guide modes of the lower air outlet, thereby improving the user's operability and the comfort experience of using the air conditioner.

[0060] In some embodiments, when the air duct 1 includes a main air duct 11 and an auxiliary air duct 12, the volute 7 includes a first volute 71, a second volute 72 and a bottom shell 73, the first volute 71 is arranged on the bottom shell 73, the second volute 72 is also arranged on the bottom shell 73, the interior of the first volute 71 forms the main air duct 11, and the interior of the second volute 72 forms the auxiliary air duct 12. This is the preferred structural form of the volute of the present disclosure, that is, the first volute is used to form the main air duct, the second volute is used to form the auxiliary air duct, the bottom shell is used to form the air outlet, and the lower plate of the volute is connected to the bottom shell, which plays a role of diffusing the downward airflow to guide it forward.

[0061] In some embodiments, the volute lower plate 8 is located at the lower ends of the main air duct 11 and the auxiliary air duct 12 at the same time, the airflow from the main air duct 11 passes through the volute lower plate 8 and is blown out from the air outlet 2, and the airflow from the auxiliary air duct 12 can be guided out through the air guide mechanism 3, or pass through the volute lower plate 8 and be blown out from the air outlet 2. This is the preferred structural form of the volute lower plate disclosed in the present invention, that is, the volute lower plate can guide the airflow flowing down the main air duct forward, and can also guide the airflow flowing down the auxiliary air duct forward, and guide the airflow forward when the air guide mechanism turns to the bottom, so that the airflow in the auxiliary air duct will not flow to the volute lower plate below.

[0062] like Fig. 9 As shown, the present disclosure further provides a control method for an air-conditioning indoor unit as described in any of the preceding items, wherein when the air-conditioning indoor unit further includes a human position detector 9, the control method comprises:

[0063] A detection step for detecting a distance L between an indoor person and a panel of the air conditioner indoor unit;

[0064] A determination step, for determining the relationship between L and a first preset distance L1;

[0065] The control step is used to control the wind guide mechanism to move and retract when L≤L1 (L1 is preferably 4m and is a constant) so as not to guide the wind in the wind duct 1; and to control the wind guide mechanism to move to the air outlet to guide the wind in the wind duct 1 when L>L1. The second preset distance L2 is 8m.

[0066] This is the preferred control method disclosed in the present invention, that is, when a person is far away from the air conditioner, the air conditioner is controlled to discharge air in the first air outlet mode (that is, the air guide mechanism is rotated downward to send the wind forward for a long distance) to improve the air blowing comfort for the person, and when the person is close to the air conditioner, the air conditioner is controlled to discharge air in the second air outlet mode (the air guide mechanism is rotated to be retracted to not block and guide the airflow), so that all the airflow is discharged in a manner of being diffused in the width direction along the bottom volute lower plate, thereby increasing the air supply width.

[0067] In some embodiments, the detection step is used to detect the state of the person for a second preset time t2 (preferably 1 minute) at each first preset time period t1 (preferably 30 minutes), and detect the distance L between the person and the panel. This is a further preferred control form of the control method of the present disclosure, that is, the position of the person is detected once at each first preset time period t1, and each detection time lasts t2, which can effectively improve the detection accuracy of the person, improve the control accuracy of the air outlet, and thus improve the comfort of the air supply to the person.

[0068] In some embodiments, when there are multiple people in the room:

[0069] The detection step is also used to detect the distance L between all people in the room and the panel;

[0070] A determination step, for determining the relationship between all L and a first preset distance L1;

[0071] The control step is used to control the air guide mechanism to move and retract when all L are ≤L1, and not guide the wind in the air duct 1; when at least one L>L1, control the air guide mechanism to move to the air outlet to guide the wind in the air duct 1.

[0072] This is a further preferred control form of the control method disclosed in the present invention, that is, when multiple people are indoors, the air guide mechanism is controlled to be retracted to supply air in a width-diffused manner only when it is detected and judged that the distance between all the people and the air conditioner is less than L1, thereby ensuring that all the people can be supplied with cold air, thereby improving the air supply comfort of all the people. When the L of at least one person is greater than L1, the long-distance air supply is controlled, thereby improving the air supply comfort of all the people.

[0073] like Fig. 9 As shown, the cabinet using the above-mentioned downwind air guide technology solution is equipped with a human position detector, including but not limited to infrared, sound wave, image and other positioning detection methods. The detector is based on Fig. 9 The detection method shown in the figure feeds back the user's position information to control the forward and reverse rotation and step angle of the driving motor of the hanging air guide mechanism through the main control chip of the air conditioner, so as to control the air guide mechanism to be in the folded and opened state, realize the intelligent air supply of the lower air outlet of the cabinet air conditioner, improve the user experience comfort, and improve the product grade.

[0074] The present disclosure also provides an air conditioner, which includes the air conditioner indoor unit described in any of the preceding items.

[0075] The above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure. The above is only a preferred implementation of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present disclosure, and these improvements and variations should also be regarded as the protection scope of the present disclosure.

Claims

1. An air conditioner indoor unit, characterized in that: The invention comprises an air duct (1), an air outlet (2) and an air guide mechanism (3), wherein the air outlet (2) comprises a first air outlet end (21) and a second air outlet end (22), an air flow flows in the air duct (1) and flows from the first air outlet end (21) to the second air outlet end (22), and the air guide mechanism (3) can move to a position in the air outlet (2) and between the first air outlet end (21) and the second air outlet end (22), so as to guide part of the air flow in the air duct (1) flowing to the second air outlet end (22) out through the air guide mechanism (3); The air guide mechanism (3) can move to a first position range so that the air guide mechanism (3) guides part of the airflow flowing toward the second air outlet end (22); the air guide mechanism (3) can also move to a second position range so that the air guide mechanism (3) does not block or guide part of the airflow flowing toward the second air outlet end (22); It also comprises a rotating shaft (5) and a driving motor (6), wherein the air guide mechanism (3) is connected to the rotating shaft (5), and the driving motor (6) is connected to the rotating shaft (5) so as to drive the air guide mechanism (3) to rotate via the rotating shaft (5); The wind guide mechanism (3) is a hanging wind guide mechanism, comprising a first part (31), a second part (32) and a third part (33); the first part (31) is fixedly arranged on the rotating shaft (5); the second part (32) is also fixedly arranged on the rotating shaft (5); the third part (33) is connected between the first part (31) and the second part (32); the third part (33) has a wind guide surface (331) capable of deflecting the airflow blowing toward the wind guide surface at an angle and guiding it to be blown out.

2. The air conditioner indoor unit according to claim 1, characterized in that: The air duct (1) comprises a main air duct (11) and an auxiliary air duct (12); the main air duct (11) and the auxiliary air duct (12) are both connected to the air outlet (2); the auxiliary air duct (12) is farther away from the wall on which the air conditioner is installed relative to the main air duct (11); and the first position range of the air guide mechanism (3) is located in the auxiliary air duct (12).

3. The air conditioner indoor unit according to claim 2, characterized in that: The air conditioner indoor unit further comprises a panel (4), the auxiliary air duct (12) being arranged close to the panel (4) relative to the main air duct (11); and / or the auxiliary air duct (12) comprises an auxiliary air duct interface (121) so that airflow can enter the auxiliary air duct (12) from the auxiliary air duct interface (121).

4. The air conditioner indoor unit according to claim 3, characterized in that: The air conditioner indoor unit further comprises a human body position detector (9), which is arranged on the panel (4) and is capable of detecting the distance between the human body and the panel.

5. The air conditioner indoor unit according to claim 1, characterized in that: The first air outlet end (21) is located above the second air outlet end (22), and the air flow direction in the air duct (1) is from top to bottom. When the air guide mechanism moves to the first position range, the air guide mechanism (3) can guide part of the air flow toward the second air outlet end (22) toward the front of the air conditioner indoor unit.

6. The air conditioner indoor unit according to any one of claims 1 to 5, characterized in that: It also includes a volute (7) and a volute lower plate (8), wherein the volute (7) forms the air duct (1) and the air outlet (2), and the volute lower plate (8) is located at the lower end of the volute (7) and connected to the volute (7), so that the airflow coming out of the air duct (1) passes through the volute lower plate (8) and is blown out from the air outlet (2).

7. The air conditioner indoor unit according to claim 6, characterized in that: From the rear to the front of the air conditioner indoor unit, the width of the horizontal cross-section of the air flow surface of the volute lower plate (8) gradually increases; and / or, the air flow surface of the volute lower plate (8) is an arc-shaped surface structure.

8. The air conditioner indoor unit according to claim 6, characterized in that: When the air duct (1) includes a main air duct (11) and an auxiliary air duct (12), the volute (7) includes a first volute (71), a second volute (72) and a bottom shell (73); the first volute (71) is arranged on the bottom shell (73); the second volute (72) is also arranged on the bottom shell (73); the interior of the first volute (71) forms the main air duct (11); and the interior of the second volute (72) forms the auxiliary air duct (12).

9. The air conditioner indoor unit according to claim 8, characterized in that: The volute lower plate (8) is located at the lower ends of the main air duct (11) and the auxiliary air duct (12) at the same time. The airflow coming out of the main air duct (11) passes through the volute lower plate (8) and is blown out from the air outlet (2). The airflow coming out of the auxiliary air duct (12) can be guided out through the air guide mechanism (3) or pass through the volute lower plate (8) and be blown out from the air outlet (2).

10. A control method for an air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: When the air conditioner indoor unit further includes a human position detector (9), the control method comprises: A detection step for detecting a distance L between an indoor person and a panel of the air conditioner indoor unit; A determination step, for determining the relationship between L and a first preset distance L1; The control step is used to control the air guide mechanism to move and retract when L≤L1, so as not to guide the wind in the air duct (1); and to control the air guide mechanism to move to the air outlet when L>L1, so as to guide the wind in the air duct (1).

11. The control method according to claim 10, characterized in that: The detection step is used to detect the state of a person for a second preset time t2 at each first preset time period t1, and detect the distance L between the person and the panel.

12. The control method according to claim 10, characterized in that: When there are multiple people in the room: The detection step is also used to detect the distance L between all people in the room and the panel; A determination step, for determining the relationship between all L and a first preset distance L1; A control step is used for controlling the air guide mechanism to move and retract when all L are ≤ L1, so as not to guide the wind in the air duct (1); and controlling the air guide mechanism to move to the air outlet to guide the wind in the air duct (1) when at least one L is greater than L1.

13. An air conditioner, characterized in that: An air-conditioning indoor unit comprising any one of claims 1-9.

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