Air supply device and air conditioner

Abstract

The utility model provides an air supply device and an air conditioner, and the air supply device comprises fan blades which are rotatably arranged; the volute tongue structure comprises a volute tongue body and a first air guide plate connected with the volute tongue body, the first air guide plate is located at the end, close to the fan blades, of the volute tongue body, and the first air guide plate is movably connected with the volute tongue body so as to adjust the distance between the first air guide plate and the fan blades; the detection device is used for detecting the air supply speed at the air outlet of the air supply device; and the control device is in signal connection with the detection device, and the control device controls the first air guide plate to move according to the air supply speed so as to change the distance between the first air guide plate and the fan blades. According to the air supply device, the variable baffle is provided, the distance between the volute tongue and the fan blades can be changed according to different air speeds, and the technical problem that in an existing air conditioner in the prior art, due to the fact that the gap between the volute tongue and the fan blades is fixed, the air outlet efficiency of the air conditioner is low is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan structure technical field, concretely relates to a kind of air supply device and air conditioner. BACKGROUND

[0002] For air conditioner, the gap space between fan and volute tongue wall surface, affect the air supply efficiency, air volume size and the noise problem of air duct.When the fan blade low-power low-speed operation, wind speed is small, noise is small, the gap between volute tongue and fan is large, part of air volume will enter volute again;When fan high-power high-speed operation, air volume becomes large, simultaneously noise will also enhance, if the gap between volute tongue and fan is small, part of air volume will impact wall surface, rotating noise becomes strong, causes the loss and waste of air volume and power consumption.

[0003] The existing cabinet machine, for example, tubular flow fan drive, to ensure that noise is qualified under high speed and reduce air volume loss, fan blade and volute tongue will maintain a certain gap;But like this when fan blade low-speed operation, air volume and fan efficiency will be greatly discounted.How to improve the gap between volute tongue and fan blade, so that the air outlet state of low-speed and high-speed operation reaches balance, becomes a very important optimization direction.

[0004] Therefore, prior art needs further development. INVENTION CONTENTS

[0005] The utility model aims at overcoming above-mentioned technical insufficient, provide a kind of air supply device and air conditioner, to solve the technical problem that the air outlet efficiency of air conditioner in existing air conditioner in relevant technology is low due to the fixed gap between volute tongue and fan blade.

[0006] To reach above-mentioned technical purpose, the utility model adopts following technical scheme: provide a kind of air supply device, comprising:

[0007] Fan blade, fan blade is rotatably arranged;

[0008] Volute tongue structure, volute tongue structure includes volute tongue main body and the first air baffle connected with volute tongue main body, the first air baffle is located at one end of volute tongue main body close to fan blade, and the first air baffle is movably connected with volute tongue main body, to adjust the interval between the first air baffle and fan blade;

[0009] Detection device, detection device is used to detect the air supply speed at the air outlet of air supply device;

[0010] Control device, control device is signal connected with detection device, and control device controls the first air baffle movement according to air supply speed, to change the interval between the first air baffle and fan blade.

[0011] Further, volute tongue structure includes:

[0012] The motor is arranged in the volute tongue body.

[0013] The transmission mechanism is connected with the motor.

[0014] The connecting rod is movably arranged along the direction of approaching or moving away from the fan blade to drive the first baffle to switch between the initial position and the active position.

[0015] When the first baffle is located at the initial position, the distance between the first baffle and the fan blade is the first distance, and when the first baffle is located at the active position, the distance between the first baffle and the fan blade is the fourth distance, the first distance being greater than the fourth distance.

[0016] Further, the volute tongue body comprises a rotating shaft located at the connection between the volute tongue body and the first baffle, the rotating shaft being rotatably connected with the first baffle to make the first baffle rotate relative to the volute tongue body.

[0017] Further, the transmission mechanism comprises:

[0018] The swing rod is arranged on the output shaft of the motor.

[0019] The crankshaft is connected with the swing rod at one end and connected with the connecting rod at the other end.

[0020] Further, the volute tongue structure comprises:

[0021] The sealing groove is recessed on the side wall of the volute tongue body.

[0022] The second baffle is connected with the first baffle at one end and connected with the sealing groove at the other end, and a preset included angle is arranged between the second baffle and the first baffle.

[0023] Further, the sealing groove comprises:

[0024] The first connecting wall and the second connecting wall are connected with each other, and a preset included angle is arranged between the first connecting wall and the second connecting arm.

[0025] When the first baffle is located at the initial position, the leeward surface of the second baffle is connected with the first connecting wall, and when the first baffle is located at the active position, the second baffle is spaced apart from the first connecting wall and / or the second connecting wall.

[0026] Further, the volute tongue structure comprises a sealing member fixedly arranged on the second baffle, the sealing member being located between the second baffle and the inner wall surface of the sealing groove to stop the air flow from entering the volute tongue body.

[0027] Further, the sealing component is fixedly arranged on the end surface of the second guide vane, and the sealing component is located between the second connecting wall and the second guide vane, and abuts against the second connecting wall when the first guide vane is in the active position.

[0028] Further, the first guide vane is provided with a flow guide structure on the side close to the fan blade, and the flow guide structure comprises a plurality of flow guide channels arranged at intervals along the extension direction of the first guide vane, and the flow guide channels are used for guiding the air flow between the first guide vane and the fan blade.

[0029] Further, the air supply device comprises a volute structure, and the volute structure and the volute tongue structure form an air supply shell, the air supply shell has an air duct, an air inlet and an air outlet connected with the air duct, and the fan blade is arranged in the air duct.

[0030] An air conditioner comprises the air supply device.

[0031] Advantages:

[0032] 1. By designing the first guide vane on the volute tongue structure, the first guide vane is movably connected with the volute tongue main body, so that the distance between the first guide vane and the fan blade can be adjusted. When the air supply device is at a low rotating speed, the first guide vane is pushed forward, the gap between the volute tongue structure and the fan blade is reduced, more air volume is blocked to enter the gap between the volute tongue structure and the fan blade to cause air volume loss, the air volume loss is reduced, and the air supply volume of the air supply device is improved. By arranging the detection device, when the air speed changes and the air volume changes through remote control, the first guide vane can be timely driven to be displaced to match the position required by high and low air volumes, the fan rotating speed and the air speed can be timely and effectively detected, the driving time of the variable baffle is solved, and the air supply efficiency of the air supply device at different air speeds can reach the highest. When the air speed is too high, the rotating noise of the air supply device is prevented, and the air volume loss caused by the air volume impacting the volute wall is prevented. The air supply distance between the volute and the fan blade is reduced, the air outlet loss is reduced, the air volume under a low power consumption state is improved, and a variable baffle is provided in the air supply device, the distance between the volute and the fan blade can be changed according to different air speeds, and the technical problem that the air outlet efficiency of the air conditioner is low due to the fixed gap between the volute and the fan blade in the related art is solved.

[0033] 2. The volute baffle that can be driven is designed as an L-shaped structure, that is, the second guide vane and the first guide vane form an L-shaped structure, the first guide vane is arranged at the end of the volute to adjust the distance between the first guide vane and the fan blade, and the second guide vane and the sealing groove on the side wall of the volute main body form a stop sealing structure, so as to seal the air duct 7, prevent the air supply air flow in the air supply device from entering the inside of the volute main body, prevent air volume leakage, and achieve the effect of concentrated air outlet.

[0034] 3. In order to solve the problem that a gap appears between the second air deflector and the first connecting wall and the second connecting wall due to rotation and propulsion of the first air deflector, a sealing rubber strip is added to the edge of the second air deflector, the sealing component abuts against the inner wall surface of the sealing groove, the effect of further air duct sealing and concentrated air outlet is achieved, and thus the air duct can be sealed in any position of the first air deflector, and the air supply amount is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is an internal structure schematic view of the air supply device adopted by the embodiment of the present application;

[0036] Figure 2 is an enlarged view of D in figure 1; Figure 1

[0037] Figure 3 is a structure schematic view of the air supply device with the first air deflector in the initial position adopted by the embodiment of the present application;

[0038] Figure 4 is an enlarged view of C in figure 2; Figure 2

[0039] Figure 5 is a structure schematic view of the air supply device with the first air deflector in the active position adopted by the embodiment of the present application;

[0040] Figure 6 is a structure schematic view of the air supply device adopted by the embodiment of the present application;

[0041] Figure 7 is a structure schematic view of the first air deflector of the air supply device adopted by the embodiment of the present application;

[0042] Figure 8 is a structure schematic view of the volute tongue main body of the air supply device adopted by the embodiment of the present application;

[0043] Figure 9 is a structure schematic view of the drainage structure of the air supply device adopted by the embodiment of the present application;

[0044] Figure 10 is an internal structure schematic view of the volute tongue structure of the air supply device adopted by the embodiment of the present application;

[0045] Figure 11 is a flow chart of the air supply control method adopted by the embodiment of the present application;

[0046] Figure 12 is a flow chart of one specific embodiment of the air supply control method adopted by the embodiment of the present application.

[0047] ​​Wherein, the above-mentioned drawings include the following reference signs:

[0048] 1, fan blade; 2, volute body; 21, motor; 22, transmission mechanism; 221, swing rod; 222, crankshaft; 23, connecting rod; 24, rotating shaft; 25, sealing groove; 251, first connecting wall; 252, second connecting wall; 253, sealing part; 3, first air guide plate; 4, detection device; 5, second air guide plate; 6, drainage structure; 7, volute structure; 71, air duct; 72, air outlet. DETAILED DESCRIPTION

[0049] In order to make the person skilled in the art better understand the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0050] Embodiment 1

[0051] According to the embodiment of the utility model, a kind of air supply device is provided, please refer to Figures 1 to 12 , comprising:

[0052] Fan blade 1, fan blade 1 is rotatably arranged;

[0053] Volute structure, volute structure includes volute body 2 and the first air guide plate 3 connected with volute body 2, first air guide plate 3 is located in volute body 2 one end close to fan blade 1, first air guide plate 3 is movably connected with volute body 2, to adjust the interval between first air guide plate 3 and fan blade 1;

[0054] Detection device 4, detection device 4 is used to detect the air supply speed at the air outlet 72 of air supply device;

[0055] Control device, control device is signal connected with detection device 4, and control device controls first air guide plate 3 to move according to air supply speed, to change the interval between first air guide plate 3 and fan blade 1.

[0056] The first air baffle 3 is movably connected with the volute tongue body 2, so that the distance between the first air baffle 3 and the fan blade 1 can be adjusted. When the air supply device is at a low speed, the first air baffle 3 is pushed forward, the gap between the volute tongue structure and the fan blade 1 is reduced, more air is blocked from entering the gap between the volute tongue structure and the fan blade 1, and air loss is reduced, so that the air supply amount of the air supply device is improved. When the air speed changes or the air amount changes through remote control, the first air baffle 3 is timely driven to displace and match to a position corresponding to the high or low air amount, so that the fan speed and the air speed can be timely and effectively detected, the driving time of the variable baffle is solved, and the air supply efficiency of the air supply device at different air speeds can reach the highest.

[0057] In this way, when the air speed is too high, the rotation noise of the air supply device is prevented, and the air loss caused by the air impact on the volute tongue wall surface is prevented, and the rotation noise of the air duct at a high power consumption speed is also controlled. When the air speed is too low, the air guide distance between the volute tongue and the fan blade 1 is reduced, the air loss is reduced, and the air amount at a low power consumption state is improved. In the air supply device of the embodiment, a variable baffle is provided, which can change the distance between the volute tongue and the fan blade 1 according to different air speeds, and solves the technical problem of low air supply efficiency of the air conditioner caused by the fixed gap between the volute tongue and the fan blade in the related art.

[0058] Specifically, in order to more accurately adjust the position of the first air baffle 3 according to the air supply speed, a control element for measuring the air speed is installed at the volute air outlet position. The element can also receive a remote control signal. When the fan speed is lower than Am / s or a remote control instruction for low power consumption operation is received, the signal starts the motor to drive the first air baffle 3 to the corresponding position at a low speed. When the air conditioner stops running, the first air baffle 3 is automatically reset to the initial position at a high power consumption.

[0059] In the air supply device of the embodiment, referring to Figures 3-5 , the volute tongue structure comprises:

[0060] The motor 21 is arranged in the volute tongue body 2.

[0061] The transmission mechanism 22 is connected with the motor 21.

[0062] The connecting rod 23 is connected with the first air baffle 3 at one end and connected with the transmission mechanism 22 at the other end. The connecting rod 23 is movably arranged along the direction close to or away from the fan blade 1, so as to drive the first air baffle 3 to switch between the initial position connected with the volute tongue body 2 and the active position. Wherein,

[0063] When the first air deflector 3 is located at the initial position, the distance between the first air deflector 3 and the fan blade 1 is a first distance, and when the first air deflector 3 is located at the active position, the distance between the first air deflector 3 and the fan blade 1 is a fourth distance, the first distance being greater than the fourth distance.

[0064] In some embodiments, the first distance is 7.8 mm, and the fourth distance is 3.1 mm.

[0065] Through the above arrangement, the transmission mechanism 22 is driven to move by the motor 21, the connecting rod 23 is driven to move by the transmission mechanism 22, the connecting rod 23 can move along the direction of approaching or moving away from the fan blade 1, so that the first air deflector 3 approaches or moves away from the fan blade 1, and the first air deflector 3 is switched between the initial position connected with the volute body 2 and the active position.

[0066] Specifically, the initial position and the active position are respectively two maximum limit positions at which the first air deflector 3 can move, through the above arrangement, not only the first air deflector 3 can be switched between the initial position connected with the volute body 2 and the active position, but also the first air deflector 3 can be accurately stopped at any position between the initial position and the active position, and the controllability of the distance adjustment between the volute and the fan blade 1 is realized.

[0067] In some embodiments, the air supply device is set such that when the air supply device is started, the first air deflector 3 is set at the initial position, that is, when the air supply device is started, the first air deflector 3 is located at the farthest position from the fan blade 1, at this time, when the consumer opens the air supply device, it is often desired to achieve rapid refrigeration or high-efficiency air supply, therefore, the fan blade 1 needs to be started at high power consumption and rotated at high speed to achieve rapid air outlet, at this time, the first air deflector 3 is located at the initial position, which can increase the flow of air supply airflow, prevent the wind speed from being too high, reduce the rotating noise of the air duct, and prevent the wind volume from impacting the volute wall to cause wind volume loss; at the same time, the rotating noise of the air duct at high power consumption rotating speed can be controlled. When the refrigeration temperature is stable subsequently, the distance between the first air deflector 3 and the fan blade 1 can be reduced according to the reduction of the wind speed, and the first air deflector 3 can be stopped at any position between the initial position and the active position, if the user sends a temperature adjustment instruction again, the distance between the first air deflector 3 and the fan blade 1 can be increased again.

[0068] In the air supply device of the embodiment, referring to Figures 3-5 , the volute body 2 includes a rotating shaft 24 located at the connection between the volute body 2 and the first air deflector 3, the rotating shaft 24 is rotationally connected with the first air deflector 3, so that the first air deflector 3 rotates relative to the volute body 2. Specifically, the first air deflector 3 is hinged with the volute body 2 through the rotating shaft 24, when the connecting rod 23 pushes the first air deflector 3, the first air deflector 3 can rotate relative to the rotating shaft 24, so as to adjust the distance between the volute and the fan blade 1.

[0069] In the air supply device of the embodiment, referring to Figures 3-5 , the transmission mechanism 22 comprises:

[0070] The swing rod 221 is arranged on the output shaft of the motor;

[0071] The crankshaft 222, one end of the crankshaft 222 is connected with the swing rod 221, and the other end of the crankshaft 222 is connected with the connecting rod 23.

[0072] Specifically, the swing rod 221, the crankshaft 222, and the hinge point where the rotating shaft 24 is located form a hinge four-bar mechanism. By controlling the rotation of the motor 21, the output shaft of the motor 21 drives the swing rod 221 to rotate, and the crankshaft 222 drives the connecting rod 23 to move along the direction of approaching or moving away from the fan blade 1 under the drive of the swing rod 221, so as to reduce or increase the distance between the first baffle 3 and the fan blade 1.

[0073] In the air supply device of the embodiment, referring to Figure 2 , the volute tongue structure comprises:

[0074] The sealing groove 25 is recessed on the side wall of the volute tongue body 2;

[0075] The second baffle 5, one end of the second baffle 5 is connected with the first baffle 3, and the other end of the second baffle 5 is connected with the sealing groove 25. A preset included angle is arranged between the second baffle 5 and the first baffle 3.

[0076] Specifically, although the variable baffle of the volute tongue can flexibly adapt to the distance requirements in different states of high and low speed of the fan blade, splitting the volute tongue will also cause the problem of air duct sealing. The air supply flow in the air supply device enters the inside of the volute tongue body 2, thereby causing air volume loss.

[0077] Therefore, in some embodiments, the driveable volute tongue baffle is designed as an "L type", that is, the second baffle 5 and the first baffle 3 form an "L type" structure. The first baffle 3 at the end of the volute tongue is used to realize the adjustment of the distance between the first baffle 3 and the fan blade 1, and the second baffle 5 and the sealing groove 25 on the side wall of the volute tongue body 2 form a closed structure, thereby sealing the air duct 71, avoiding the air supply flow in the air supply device from entering the inside of the volute tongue body 2, avoiding air volume leakage, and realizing the effect of concentrated air outlet.

[0078] In some embodiments, at least part of the connecting rod 23 is connected to the second baffle 5, and the second baffle 5 and the first baffle 3 are driven to rotate together by the connecting rod 23.

[0079] In some embodiments, the connecting rod 23 comprises a connecting rod body and a first connecting rod and a second connecting rod connected to the connecting rod body respectively, the first connecting rod is connected to the leeward surface of the first deflector 3, and the second connecting rod is connected to the leeward surface of the second deflector 5, so that the second deflector 5 and the first deflector 3 can be pushed to rotate together by pushing the connecting rod 23.

[0080] In the air supply device of the embodiment, referring to Figure 2 , the sealing groove 25 comprises:

[0081] a first connecting wall 251 and a second connecting wall 252 connected to each other, and a preset included angle is arranged between the first connecting wall 251 and the second connecting arm; wherein,

[0082] When the first deflector 3 is located at the initial position, the leeward surface of the second deflector 5 is connected to the first connecting wall 251, and when the first deflector 3 is located at the active position, the second deflector 5 is arranged in a spaced manner with the first connecting wall 251 and / or the second connecting wall 252.

[0083] Specifically, when the first deflector 3 is located at the initial position, the leeward surface of the second deflector 5 is connected to the first connecting wall 251, and the tail of the baffle cooperates with the stop to form a sealed air duct space. When the baffle is pushed forward at a low wind speed, the first deflector 3 is located at the active position or between the initial position and the active position, and due to rotation and pushing, the second deflector 5 is arranged in a spaced manner with the first connecting wall 251 and / or the second connecting wall 252, that is, a gap appears between the second deflector 5 and the first connecting wall 251 and the second connecting wall 252.

[0084] In the air supply device of the embodiment, referring to Figure 2 , the volute tongue structure comprises a sealing component 253 fixedly arranged on the second deflector 5, and the sealing component 253 is located between the second deflector 5 and the inner wall surface of the sealing groove 25 to stop the air flow from entering the volute body 2. In order to solve the problem that due to rotation and pushing, a gap appears between the second deflector 5 and the first connecting wall 251 and the second connecting wall 252, a sealing rubber strip is added to the edge of the second deflector 5, the sealing component 253 abuts against the inner wall surface of the sealing groove 25, and the effect of further air duct sealing and concentrated air outlet is achieved, so that the air duct can be sealed in any position of the first deflector 3, and the air supply amount is ensured.

[0085] In the air supply device of the embodiment, referring to Figure 2The sealing component 253 is fixedly arranged on the end surface of the second air deflector 5, and is located between the second connecting wall 252 and the second air deflector 5. When the first air deflector 3 is in the active position, the sealing component 253 abuts against the second connecting wall 252. Preferably, the sealing component 253 is fixedly arranged on the tail end surface of the second air deflector 5. When the first air deflector 3 is in the active position or between the initial position and the active position, the sealing component 253 is in contact with the second connecting wall 252, thereby forming a new sealed air duct space and achieving the effects of further air duct sealing and concentrated air outlet.

[0086] In the air supply device of the embodiment, referring to Figure 6 The first air deflector 3 is provided with a flow guide structure 6 on the side close to the fan blade 1. The flow guide structure 6 includes a plurality of flow guide channels arranged at intervals along the extension direction of the first air deflector 3, and is used for guiding the air supply flow between the first air deflector 3 and the fan blade 1. The flow guide structure 6 is used for guiding the air outlet direction of the air supply flow, so that the air supply flow can be concentrated, the air outlet effect is stable, and the effect of concentrated air outlet is achieved.

[0087] In the air supply device of the embodiment, referring to Figure 1 The air supply device includes a volute structure 7, and the volute structure 7 and the volute tongue structure form an air supply shell. The air supply shell has an air duct 71, an air inlet and an air outlet 72 which are in communication with the air duct 71, and the fan blade 1 is arranged in the air duct 71.

[0088] In some embodiments, the air supply device is a cross-flow fan.

[0089] Embodiment 2

[0090] In the air conditioner of the embodiment, the air conditioner includes the air supply device described above.

[0091] In the air conditioner of the embodiment, by using the air supply device described above, the first air deflector 3 is designed on the volute tongue structure, and the first air deflector 3 is movably connected with the volute main body 2. Therefore, the spacing between the first air deflector 3 and the fan blade 1 can be adjusted. When the air supply device is at a low speed, the first air deflector 3 is pushed forward, so that the gap between the volute tongue structure and the fan blade 1 is small, more air volume is blocked to enter the gap between the volute tongue structure and the fan blade 1, and air volume loss is reduced. Therefore, the air supply volume of the air supply device is improved. By arranging the detection device 4, when the air speed changes or the air volume changes through remote control, the first air deflector 3 can be timely driven to move to a position suitable for high or low air volume. The fan speed and the air speed can be timely and effectively detected, the driving time of the variable baffle is solved, and the air supply efficiency of the air supply device at different air speeds can be maximized.

[0092] In this way, when the wind speed is too high, the rotation noise of the air supply device is prevented, the wind volume loss caused by the wind volume impacting the wall surface of the volute tongue is prevented, and the wind duct rotation noise of high power consumption rotation speed is controlled. When the wind speed is too low, the air guide distance between the volute tongue and the fan blade 1 is reduced, the air outlet loss is reduced, the wind volume in the low power consumption state is improved, and a "variable baffle" is provided in the air supply device of the embodiment. The distance between the volute tongue and the fan blade 1 can be changed according to different wind speeds, and the technical problem of low air outlet efficiency of the air conditioner caused by the fixed gap between the volute tongue and the fan blade in the related art is solved.

[0093] Embodiment 3

[0094] In the air supply control method of the embodiment, referring to Figure 11 , the air supply control method is applicable to the air supply device described above, and the air supply control method comprises the following steps.

[0095] Detecting the air supply speed at the air outlet 72 of the air supply device;

[0096] According to the air supply speed, the first air guide plate 3 is controlled to move to change the distance between the first air guide plate 3 and the fan blade 1.

[0097] It should be noted that the air supply temperature needs to be obtained when the air supply device is started, and the air supply temperature is controlled according to the air supply temperature. If the current is in a high wind speed state, the first air guide plate 3 remains stationary, and the first air guide plate 3 is in the initial position. When the air supply device is running for a period of time, the remote control signal or the temperature adjustment instruction is obtained again, and the air supply temperature is obtained according to the air supply temperature.

[0098] In the air supply control method of the embodiment, the first air guide plate 3 is controlled, so that the distance between the first air guide plate 3 and the fan blade 1 can be adjusted. When the air supply device is in a low rotation speed, the first air guide plate 3 is pushed forward, so that the gap between the volute tongue structure and the fan blade 1 is small, more wind volume enters the gap between the volute tongue structure and the fan blade 1, and the wind volume loss is reduced. The effect of improving the air supply volume of the air supply device is achieved. By using the detection device 4, when the wind speed changes and the remote control wind volume changes, the first air guide plate 3 is driven to change position in time, and the position of the high and low wind volume is matched. The fan rotation speed and the wind speed can be detected in time and effectively, the driving time of the variable baffle is solved, and the air supply efficiency of the air supply device under different wind speeds can be ensured to be the highest.

[0099] In the control method of the embodiment, when the air supply device wind speed is too high, the air supply device rotation noise is prevented from being too loud, and the wind volume loss caused by the wind volume impacting the volute tongue wall surface, and the high-power rotating speed air duct rotation noise is also controlled; when the wind speed is too low, the air guide distance between the volute tongue and the fan blade 1 is reduced, the air outlet loss is reduced, and the wind volume in the low-power state is improved. In the air supply device of the embodiment, a "variable baffle" is provided, which can change the distance between the volute tongue and the fan blade 1 according to different wind speeds, and solves the technical problem of low air outlet efficiency of the existing air conditioner due to the fixed gap between the volute tongue and the fan blade in the related art.

[0100] In the air supply control method of the embodiment, the first air guide plate 3 is controlled to move according to the air supply speed, including:

[0101] According to the air supply speed, the air supply state of the air supply device is judged;

[0102] According to the air supply state and / or the air supply speed, the first air guide plate 3 is controlled to move.

[0103] Specifically, by judging the air supply speed, it is judged that the air supply device is currently in a low-speed running state and a high-speed running state, and according to the air supply state or the air supply speed, the first air guide plate 3 is timely driven to change position and matched to the position required by high and low wind volume, so that the air supply efficiency of the air supply device under different wind speeds can reach the highest.

[0104] In the air supply control method of the embodiment, according to the air supply speed, the air supply state of the air supply device is judged, including:

[0105] If the air supply speed R is greater than or equal to Arpm, the air supply device is in a high wind speed state;

[0106] According to the air supply state and / or the air supply speed, the first air guide plate 3 is controlled to move, specifically:

[0107] If the air supply device is in a high wind speed state, the first air guide plate 3 is controlled to be in an initial position, so that the distance between the first air guide plate 3 and the fan blade 1 is a first distance X1.

[0108] Specifically, when the air supply device is in a high wind speed state, the first air guide plate 3 needs to be ensured to be in the initial position, so that the distance between the first air guide plate 3 and the fan blade 1 is the first distance X1. If the air supply device is just started, the first air guide plate 3 remains stationary, and if the air supply device has been running for a period of time and the first air guide plate 3 is not in the initial position, the first air guide plate 3 is controlled to rotate to the initial position.

[0109] In some embodiments, the value of A is 1000 rpm.

[0110] In the air supply control method of the embodiment, the air supply state of the air supply device is determined according to the air supply speed, including:

[0111] If the air supply speed R < Arpm, the air supply device is in a low wind speed state;

[0112] According to the air supply state and / or the air supply speed, the first air guide plate 3 is controlled to move, specifically:

[0113] If the air supply device is in a low wind speed state, the first air guide plate 3 is controlled to move according to the air supply speed.

[0114] Specifically, if the air supply device is in a low wind speed state, the first air guide plate 3 is controlled to move according to the air supply speed, so as to match to the position where the high and low air volume should be, and ensure that the air supply efficiency of the air supply device can reach the highest under different wind speeds.

[0115] In the air supply control method of the embodiment, if the air supply device is in a low wind speed state, the first air guide plate 3 is controlled to move according to the air supply speed, including:

[0116] If the air supply speed satisfies B1≤R<B2rpm, the first air guide plate 3 is controlled to move so that the distance between the first air guide plate 3 and the fan blade 1 is the fourth distance X4;

[0117] If the air supply speed satisfies B2≤R<B3rpm, the first air guide plate 3 is controlled to move so that the distance between the first air guide plate 3 and the fan blade 1 is the third distance X3;

[0118] If the air supply speed satisfies B3≤R<Arpm, the first air guide plate 3 is controlled to move so that the distance between the first air guide plate 3 and the fan blade 1 is the second distance X2; wherein B1<B2<B3<A, X4<X3<X2<X1.

[0119] In some embodiments, the maximum speed of the fan blade is 1200 rpm, and the corresponding relationship between the speed of the fan blade and the distance between the volute tongue and the fan blade is as follows:

[0120] The speed is 600≤R<700 rpm, the fourth distance X4=3.1 mm;

[0121] The speed is 700≤R<850 rpm, the third distance X3=4.7 mm;

[0122] The speed is 850≤R<1000 rpm, the second distance X2=6.3 mm;

[0123] The speed is R≥1000 rpm, the first distance X1=7.8 mm.

[0124] In the air supply control method of the embodiment, the air supply control method includes:

[0125] When the air supply device is closed, it is determined whether the first air deflector 3 is in the initial position;

[0126] If the first air deflector 3 is not in the initial position, the first air deflector 3 is controlled to return to the initial position, so that the distance between the first air deflector 3 and the fan blade 1 is the first distance X1.

[0127] Specifically, when the air supply device is closed, the first air deflector 3 is controlled to reset to the initial state, so that the first air deflector 3 is in the initial position when the air supply device is started, and rapid refrigeration of the air conditioner is realized.

[0128] In the air supply control method of the embodiment, the method for controlling the movement of the first air deflector 3 includes:

[0129] The motor 21 is controlled to rotate, the output shaft of the motor 21 drives the swing rod 221 to rotate, the crankshaft 222 drives the connecting rod 23 to move in the direction of approaching or moving away from the fan blade 1 under the drive of the swing rod 221, so as to reduce the distance between the first air deflector 3 and the fan blade 1 or increase the distance between the first air deflector 3 and the fan blade 1.

[0130] Embodiment 4

[0131] The variable baffle volute structure described in the embodiment is composed of a volute body 2, a first air deflector 3, a second air deflector 5, a transmission mechanism 22, a motor 21 and other structures, and a fan blade 1 and an air duct 71 of a cross-flow fan to form a complete air supply device. In a normal state, the first air deflector 3 is in a static state, the first air deflector 3 and the second air deflector 5 are provided with a connecting rod 23, and the transmission mechanism 22 can drive the connecting rod 23 of the first air deflector 3 and the second air deflector 5 to extend forward under the drive of the motor 21, so as to shorten the gap between the volute and the fan blade 1.

[0132] When the consumer opens the air conditioner and wants to perform rapid refrigeration, the air supply device starts at high power consumption and rotates at high speed to realize rapid air supply. At this time, the first air deflector 3 and the second air deflector 5 are located at the initial position and maintain a certain first distance X1 between the first air deflector 3 and the fan blade 1, Figure 3 The initial position shown is a maximum gap of 7.8 mm, which prevents the wind speed from being too high, the rotating noise from being too loud, and the wind volume from being lost due to impact on the volute wall surface; at the same time, it can also control the rotating noise of the air duct at high power consumption speed. After rapid refrigeration and cooling, the air conditioner enters a low power consumption stable state, the fan blade 1 rotates at a low speed, and at this time the volute baffle is driven by the transmission mechanism 22 to rotate towards the fan blade 1, thereby reducing the air deflection distance between the volute and the fan blade 1, Figure 5The first distance X4 is the minimum gap 3.1mm, which can reduce the air loss and improve the air volume in the low power state. Two positioning points are arranged between the maximum and minimum gap of the volute tongue and the fan blade 1, which are the third distance 4.7mm and the second distance 6.3mm, respectively, corresponding to two speed ranges. According to the maximum speed of the fan blade 1200rpm, the corresponding relationship between the fan blade speed and the volute tongue distance is as follows:

[0133] When the speed R≥1000rpm, the volute tongue and the fan blade gap X1=7.8mm;

[0134] When the speed 850≤R<1000rpm, the volute tongue and the fan blade gap X2=6.3mm;

[0135] When the speed 700≤R<850rpm, the volute tongue and the fan blade gap X3=4.7mm;

[0136] When the speed 600≤R<700rpm, the volute tongue and the fan blade gap X4=3.1mm.

[0137] Although the variable volute baffle can flexibly adapt to the distance requirement of the fan blade in high speed and low speed state, the split volute tongue also brings the problem of air duct sealing. Therefore, the variable baffle is designed as "L type", that is, the variable baffle includes the first guide vane 3 and the second guide vane 5, and the sealing component 253, such as sealing rubber strip, is installed on the tail of the second guide vane 5, that is, the baffle tail. A sealing groove 25 is designed on the side wall of the cooperating volute body 2, so as to form a stop structure. When the first guide vane 3 is in a high wind speed state, the tail of the second guide vane 5 cooperates with the sealing groove 25 to form a sealed air duct space. When the first guide vane 3 is in a low wind speed state, the tail of the second guide vane 5 and the inner wall surface of the sealing groove 25 have a gap due to rotation and advancement. At this time, the sealing component 253 cooperates with the inner wall surface of the sealing groove 25 to form a new sealed air duct space, as Figure 2 shown.

[0138] In order to more accurately adjust the position of the first guide vane 3 according to the air outlet speed, a control element for measuring the wind speed is installed at the volute air outlet position. The element can also receive a remote control signal. When the fan speed is lower than A m / s or the air conditioner receives a remote control instruction for low power operation, the signal starts the motor to run and drive the first guide vane 3 to the corresponding position of low speed. When the air conditioner stops running, the first guide vane 3 will automatically reset to the default high power position. The driving logic is as Figure 12 shown.

[0139] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the use of these terms is interchangeable under appropriate circumstances such that the descriptive

[0140] Optionally, the specific examples in the embodiments can refer to the examples described in the above embodiments, and the embodiments will not be described here again.

[0141] The sequence numbers of the above-described embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0142] In the above-described embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0143] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. An air supply device, characterized by comprising: The wind blade (1) is rotatably arranged. The volute tongue structure comprises a volute tongue body (2) and a first air deflector (3) connected with the volute tongue body (2), the first air deflector (3) is located at one end of the volute tongue body (2) close to the wind blade (1), and the first air deflector (3) is movably connected with the volute tongue body (2) to adjust the distance between the first air deflector (3) and the wind blade (1). The detection device (4) is used for detecting the air supply speed at the air outlet (72) of the air supply device. The control device is signal connected with the detection device (4), and the control device controls the movement of the first air deflector (3) according to the air supply speed to change the distance between the first air deflector (3) and the wind blade (1). The volute tongue structure comprises:

2. The air supply device according to claim 1, wherein The motor (21) is arranged in the volute tongue body (2); The transmission mechanism (22) is connected with the motor (21); One end of the connecting rod (23) is connected with the first air deflector (3), the other end of the connecting rod (23) is connected with the transmission mechanism (22), the connecting rod (23) is movably arranged along the direction close to or away from the wind blade (1) to drive the first air deflector (3) to switch between the initial position connected with the volute tongue body (2) and the active position; wherein, When the first air deflector (3) is located at the initial position, the distance between the first air deflector (3) and the wind blade (1) is the first distance, and when the first air deflector (3) is located at the active position, the distance between the first air deflector (3) and the wind blade (1) is the fourth distance, the first distance is greater than the fourth distance. The volute tongue body (2) comprises a rotating shaft (24) located at the connection between the volute tongue body (2) and the first air deflector (3), the rotating shaft (24) is rotatably connected with the first air deflector (3) to make the first air deflector (3) rotate relative to the volute tongue body (2).

3. The air supply device according to claim 2, wherein The transmission mechanism (22) comprises:

4. The air supply device according to claim 3, wherein The swing rod (221) is arranged on the output shaft of the motor (21); One end of the crankshaft (222) is connected with the swing rod (221), and the other end of the crankshaft (222) is connected with the connecting rod (23). The volute tongue structure comprises:

5. The air supply device according to claim 2, wherein The sealing groove (25) is recessed on the side wall of the volute tongue body (2); One end of the second air deflector (5) is connected with the first air deflector (3), the other end of the second air deflector (5) is connected with the sealing groove (25), and a preset included angle is arranged between the second air deflector (5) and the first air deflector (3). The sealing groove (25) comprises:

6. The air supply device according to claim 5, wherein The first connecting wall (251) and the second connecting wall (252) are connected with each other, and a preset included angle is arranged between the first connecting wall (251) and the second connecting wall; wherein, ​ When the first deflector (3) is in the initial position, the leeward surface of the second deflector (5) is connected with the first connecting wall (251), and when the first deflector (3) is in the active position, the second deflector (5) is arranged in a spaced manner with the first connecting wall (251) and / or the second connecting wall (252).

7. The air supply device according to claim 6, wherein The volute tongue structure comprises a sealing component (253) fixedly arranged on the second deflector (5), which is located between the second deflector (5) and the inner wall surface of the sealing groove (25) to prevent the air flow from entering the volute body (2).

8. The air supply device according to claim 7, wherein The sealing component (253) is fixedly arranged on the end surface of the second deflector (5), and is located between the second connecting wall (252) and the second deflector (5). When the first deflector (3) is in the active position, the sealing component (253) abuts against the second connecting wall (252).

9. The air supply device according to claim 1, wherein The first deflector (3) is provided with a flow guide structure (6) on the side close to the fan blade (1), and the flow guide structure (6) comprises a plurality of flow guide channels arranged in a spaced manner along the extension direction of the first deflector (3), which are used to guide the air flow between the first deflector (3) and the fan blade (1).

10. The air supply device according to claim 1, wherein The air supply device comprises a volute structure (7), which forms an air supply shell with the volute tongue structure. The air supply shell has an air duct (71) and an air inlet and an air outlet (72) connected with the air duct (71) therein. The fan blade (1) is arranged in the air duct (71).

11. An air conditioner characterized by comprising: The air conditioner comprises the air supply device according to any one of claims 1 to 10. The air conditioner comprises the air supply device according to any one of claims 1 to 10.

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