Air supply device, air conditioner and air supply control method

Abstract

The invention provides an air supply device, an air conditioner and an air supply control method, 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 present invention relates to the technical field of fan structures, and in particular to an air supply device, an air conditioner and an air supply control method. Background Art

[0002] For air conditioners, the gap between the fan and the wall of the volute and the tongue affects the air supply efficiency, air volume and noise in the air duct. When the fan blades run at low power consumption and low speed, the wind speed is low, the noise is low, the gap between the tongue and the fan is large, and part of the air volume will enter the volute again; when the fan runs at high power consumption and high speed, the air volume increases, and the noise will also increase. If the gap between the tongue and the fan is small, part of the air volume will hit the wall, and the rotation noise will become stronger, resulting in loss and waste of air volume and power consumption.

[0003] For example, in existing cabinet units, in order to ensure acceptable noise levels at high speeds and reduce air volume loss, a certain gap is maintained between the blades and the volute tongue. However, when the blades run at low speeds, the air volume and fan efficiency will be greatly reduced. How to improve the gap between the volute tongue and the blades to achieve a balance between the air flow at low and high speeds has become a very important optimization direction.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide an air supply device, an air conditioner and an air supply control method to solve the technical problem in the related art that the air outlet efficiency of the air conditioner is low due to the fixed gap between the volute tongue and the fan blade in the existing air conditioner.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: Provided is an air supply device, comprising: A fan blade, wherein the fan blade is rotatably arranged; The volute tongue structure includes a volute tongue body and a first air guide plate connected to the volute tongue body, the first air guide plate is located at one end of the volute tongue body close to the fan blade, and the first air guide plate is movably connected to the volute tongue body to adjust the distance between the first air guide plate and the fan blade; A detection device, the detection device is used to detect the air supply speed at the air outlet of the air supply device; The control device is connected with the detection device by signal, and the control device controls the activity of the first air guide plate according to the air supply speed to change the distance between the first air guide plate and the fan blade.

[0007] Further, the snail tongue structure comprises: A motor is arranged in the volute tongue body; A transmission mechanism connected to the motor; A connecting rod, one end of which is connected to the first air guide plate, and the other end of which is connected to the transmission mechanism, and the connecting rod is movably arranged in a direction close to or away from the fan blade to drive the first air guide plate to switch between an initial position connected to the volute tongue body and an active position; wherein, When the first air guide plate is at the initial position, the distance between the first air guide plate and the fan blade is a first distance, and when the first air guide plate is at the active position, the distance between the first air guide plate and the fan blade is a fourth distance, and the first distance is greater than the fourth distance.

[0008] Furthermore, the volute tongue body includes a rotating shaft located at the connection between the volute tongue body and the first air guide plate, and the rotating shaft is rotatably connected to the first air guide plate so that the first air guide plate can rotate relative to the volute tongue body.

[0009] Furthermore, the transmission mechanism comprises: A swing rod is arranged on the output shaft of the motor; A crankshaft, one end of the crankshaft is connected to the rocker arm, and the other end of the crankshaft is connected to the connecting rod.

[0010] Further, the snail tongue structure comprises: A sealing groove, the sealing groove is recessed and arranged on the side wall of the volute tongue body; A second air guide plate, one end of the second air guide plate is connected to the first air guide plate, the other end of the second air guide plate is connected to the sealing groove, and a preset angle is set between the second air guide plate and the first air guide plate.

[0011] Further, the sealing groove comprises: The first connecting wall and the second connecting wall are connected to each other, and a preset angle is set between the first connecting wall and the second connecting arm; wherein, When the first wind guide plate is located at the initial position, the leeward side of the second wind guide plate is connected to the first connecting wall. When the first wind guide plate is located at the active position, the second wind guide plate is spaced apart from the first connecting wall and / or the second connecting wall.

[0012] Furthermore, the volute tongue structure includes a sealing component fixedly arranged on the second air guide plate, and the sealing component is located between the second air guide plate and the inner wall surface of the sealing groove to prevent the supply air flow from entering the volute tongue body.

[0013] Furthermore, the sealing component is fixedly arranged on the end surface of the second air guide plate, and the sealing component is located between the second connecting wall and the second air guide plate. When the first air guide plate is located in the active position, the sealing component abuts against the second connecting wall.

[0014] Furthermore, a drainage structure is provided on one side of the first air guide plate close to the fan blades. The drainage structure includes a plurality of drainage channels arranged at intervals along the extension direction of the first air guide plate. The drainage channels are used to guide the supply air flow flowing between the first air guide plate and the fan blades.

[0015] Furthermore, the air supply device includes a volute structure, which forms an air supply shell with the volute tongue structure. The air supply shell has an air duct and an air inlet and an air outlet connected to the air duct, and fan blades are arranged in the air duct.

[0016] An air conditioner comprises the air supply device as described above.

[0017] An air supply control method is applicable to the above-mentioned air supply device, and the air supply control method includes: Detecting the air supply speed at the air outlet of the air supply device; According to the air supply speed, the activity of the first air guide plate is controlled to change the distance between the first air guide plate and the fan blades.

[0018] Further, according to the air supply speed, controlling the first air guide plate activity, including; According to the air supply speed, the air supply state of the air supply device is judged; The activity of the first air guide plate is controlled according to the air supply state and / or the air supply speed.

[0019] Further, judging the air supply state of the air supply device according to the air supply speed includes: If the air supply speed R ≥ Arpm, the air supply device is in a high wind speed state; According to the air supply state and / or air supply speed, the activity of the first air guide plate is controlled, specifically: If the air supply device is in a high wind speed state, the first air guide plate is controlled to be in an initial position so that the distance between the first air guide plate and the fan blade is the first distance X1.

[0020] Further, judging the air supply state of the air supply device according to the air supply speed includes: If the air supply speed R < Arpm, the air supply device is in a low wind speed state; According to the air supply state and / or air supply speed, the activity of the first air guide plate is controlled, specifically: If the air supply device is in a low wind speed state, the activity of the first air guide plate is controlled according to the air supply speed.

[0021] Further, if the air supply device is in a low wind speed state, the activity of the first air guide plate is controlled according to the air supply speed, including: If the air supply speed satisfies B1≤R<B2rpm, the first air guide plate is controlled to move so that the distance between the first air guide plate and the fan blade is the fourth distance X4; If the air supply speed satisfies B2≤R<B3rpm, the first air guide plate is controlled to move so that the distance between the first air guide plate and the fan blade is the third distance X3; If the air supply speed satisfies B3≤R<Arpm, the first air guide plate is controlled to move so that the distance between the first air guide plate and the fan blade is the second distance X2; wherein, B1<B2<B3<A, X4<X3<X2<X1.

[0022] Further, the air supply control method includes: When the air supply device is turned off, determining whether the first air guide plate is in the initial position; If the first air guide plate is not in the initial position, the first air guide plate is controlled to return to the initial position so that the distance between the first air guide plate and the fan blade is the first distance X1.

[0023] Further, the method for controlling the activity of the first air guide plate includes: The motor is controlled to rotate, and the output shaft of the motor drives the swing rod to rotate. Driven by the swing rod, the crankshaft pushes the connecting rod to move in a direction close to or away from the fan blade, thereby reducing the distance between the first air guide plate and the fan blade or increasing the distance between the first air guide plate and the fan blade. Beneficial effects: 1. By designing a first air guide plate on the volute tongue structure, the first air guide plate is movably connected to the volute tongue body, so that the spacing between the first air guide plate and the fan blade can be adjusted. When the air supply device is at a low speed, the first air guide plate is pushed forward to reduce the gap between the volute tongue structure and the fan blade, thereby blocking more air volume from entering between the volute tongue structure and the fan blade to generate air volume loss, thereby reducing air volume loss and achieving the effect of increasing the air volume of the air supply device; by setting a detection device, when the wind speed changes and the remote control air volume changes, the first air guide plate is driven to change position in time to match the position where the high and low air volumes should be, so that the fan speed and wind speed can be detected in time and effectively, and the driving of the variable baffle is solved. The timing issue is to ensure that the air supply efficiency of the air supply device can reach the highest under different wind speeds; when the wind speed is too high, the rotation noise of the air supply device is prevented, and the air volume hits the wall of the volute tongue to cause air volume loss, and at the same time, the rotation noise of the air duct at a high power consumption speed can be controlled; when the wind speed is too low, the air guide distance between the volute tongue and the fan blade is reduced, the air outlet loss is reduced, and the air volume in the low power consumption state is increased. A "variable baffle" is provided in the air supply device of this embodiment, which can change the distance between the volute tongue and the fan blade according to different wind speeds, thereby solving the technical problem of low air outlet efficiency of the air conditioner due to the fixed gap between the volute tongue and the fan blade in the existing air conditioner in the related technology.

[0024] 2. The drivable volute tongue baffle is designed to be "L-shaped", that is, the second air guide plate and the first air guide plate form an "L-shaped" structure. The first air guide plate is used to adjust the distance between the fan blades at the end of the volute tongue, and the second air guide plate and the sealing groove on the side wall of the volute tongue body form a stopper closing structure, thereby sealing the air duct 7 to prevent the air supply flow in the air supply device from returning to the interior of the volute tongue body, avoiding air leakage, and achieving the effect of concentrated air outlet.

[0025] 3. In order to solve the problem that a gap appears between the second air guide plate and the first connecting wall and the second connecting wall due to the rotation and advancement of the first air guide plate, a sealing rubber strip is added to the edge of the second air guide plate, and the sealing component abuts against the inner wall surface of the sealing groove to achieve further sealing of the air duct and concentrated air outlet. In this way, the air duct can be sealed and the air supply volume can be guaranteed when the first air guide plate is in any position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the internal structure of the air supply device used in the embodiment of the present invention; Figure 2 yes Figure 1 Magnified view at D in the middle; Figure 3 is a structural schematic diagram of a first air guide plate of an air supply device used in an embodiment of the present invention in an initial position; Figure 4 yes Figure 2 Enlarged view at center C; Figure 5 is a structural schematic diagram of a first air guide plate of an air supply device used in an embodiment of the present invention in an active position; Figure 6 is a schematic structural diagram of an air supply device used in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a first air guide plate of an air supply device used in an embodiment of the present invention; Figure 8 It is a structural schematic diagram of the volute tongue main body of the air supply device used in an embodiment of the present invention; Fig. 9 is a structural schematic diagram of the air guide structure of the air supply device used in an embodiment of the present invention; Fig.10 Schematic diagram of the internal structure of the volute tongue structure of the air supply device used in the embodiment of the present invention; Fig.11 is a flow chart of the air supply control method adopted in the embodiment of the present invention; Fig.12 It is a flow chart of a specific embodiment of the air supply control method adopted in the embodiment of the present invention.

[0027] The above drawings include the following reference numerals: 1. Fan blade; 2. Volute tongue body; 21. Motor; 22. Transmission mechanism; 221. Rocker arm; 222. Crankshaft; 23. Connecting rod; 24. Rotating shaft; 25. Sealing groove; 251. First connecting wall; 252. Second connecting wall; 253. Sealing component; 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

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] Example 1 According to an embodiment of the present invention, an air supply device is provided. Figures 1 to 12 ,include: The fan blade 1 is rotatably arranged; The volute tongue structure includes a volute tongue body 2 and a first air guide plate 3 connected to the volute tongue body 2. The first air guide plate 3 is located at one end of the volute tongue body 2 close to the fan blade 1. The first air guide plate 3 is movably connected to the volute tongue body 2 to adjust the distance between the first air guide plate 3 and the fan blade 1. Detection device 4, detection device 4 is used to detect the air supply speed at the air outlet 72 of the air supply device; The control device is connected to the detection device 4 by signal. The control device controls the activity of the first air guide plate 3 according to the air supply speed to change the distance between the first air guide plate 3 and the fan blade 1.

[0030] By designing a first air guide plate 3 on the volute tongue structure, the first air guide plate 3 is movably connected to the volute tongue body 2, 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 at a low speed, the first air guide plate 3 is pushed forward to reduce the gap between the volute tongue structure and the fan blade 1, thereby blocking more air volume from entering between the volute tongue structure and the fan blade 1 and causing air volume loss, thereby reducing air volume loss and achieving the effect of increasing the air volume of the air supply device; by setting a detection device 4, when the wind speed changes and the remote control air volume changes, the first air guide plate 3 is driven to change position in time to match the position where the high and low air volumes should be, so that the fan speed and wind speed can be detected in time and effectively, and the problem of driving timing of the variable baffle is solved, so as to ensure that the air supply efficiency of the air supply device can reach the highest at different wind speeds.

[0031] In this way, when the wind speed is too high, the rotation noise of the air supply device is prevented from being loud, and the air volume can be prevented from hitting the wall of the volute tongue to cause air volume loss, and the rotation noise of the air duct at a high power consumption speed can also be 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 air volume in the low power consumption state is increased. In the air supply device of this 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, thereby solving the technical problem of low air outlet efficiency of the air conditioner in the existing air conditioner in the related technology due to the fixed gap between the volute tongue and the fan blade.

[0032] Specifically, in order to be able to more accurately adjust the position of the first air guide plate 3 according to the air outlet speed, a control element for measuring the wind speed is installed at the snail tongue air outlet position. The element can also receive remote control signals. When the fan speed is lower than Am / s or a remote control command for low power consumption operation is received, the signal starts the motor to start running, driving the first air guide plate 3 to the corresponding position with low speed; when the air conditioner stops running, the first air guide plate 3 will automatically reset to the default high power consumption initial position.

[0033] In the air supply device of this embodiment, see Figure 3-5 , the snail tongue structure includes: A motor 21 is arranged in the volute tongue body 2; A transmission mechanism 22, the transmission mechanism 22 is connected to the motor 21; A connecting rod 23, one end of which is connected to the first air guide plate 3, and the other end of which is connected to the transmission mechanism 22. The connecting rod 23 is movably arranged in a direction close to the fan blade 1 or away from the fan blade 1 to drive the first air guide plate 3 to switch between an initial position connected to the volute tongue body 2 and an active position; wherein, When the first air guide plate 3 is at the initial position, the distance between the first air guide plate 3 and the fan blade 1 is the first distance. When the first air guide plate 3 is at the active position, the distance between the first air guide plate 3 and the fan blade 1 is the fourth distance. The first distance is greater than the fourth distance.

[0034] In some embodiments, the first spacing is 7.8 mm and the fourth spacing is 3.1 mm.

[0035] Through the above arrangement, the transmission mechanism 22 is driven by the motor 21, and the transmission mechanism 22 drives the connecting rod 23 to move. The connecting rod 23 can move in a direction close to the fan blade 1 or away from the fan blade 1, so that the first air guide plate 3 is close to the fan blade 1 or away from the fan blade 1, and the first air guide plate 3 is switched between the initial position connected to the volute tongue body 2 and the active position.

[0036] Specifically, the initial position and the active position are respectively the two maximum limit positions at which the first air guide plate 3 can move. Through the above settings, not only can the first air guide plate 3 be switched between the initial position connected to the volute tongue body 2 and the active position, but the first air guide plate 3 can also be accurately stayed at any position between the initial position and the active position, thereby realizing the controllable adjustment of the distance between the volute tongue and the fan blade 1.

[0037] In some embodiments, the air supply device is set to set the first air guide plate 3 at the initial position when the air supply device is turned on, that is, when the air supply device is started, the first air guide plate 3 is located at the farthest position from the fan blade 1. At this time, when the consumer turns on the air supply device, he often hopes to achieve rapid cooling or efficient air supply. Therefore, the fan blade 1 needs to start with high power consumption and rotate at high speed to achieve rapid air discharge. At this time, the first air guide plate 3 is located at the initial position, which can increase the flow rate of the air supply airflow, prevent excessive wind speed, high rotation noise, and air volume impact on the wall of the volute tongue to cause air volume loss; at the same time, it can also control the rotation noise of the air duct with high power consumption and rotation speed. When the subsequent refrigeration temperature is stable, the distance between the first air guide plate 3 and the fan blade 1 can be reduced according to the reduction of wind speed. The first air guide plate 3 can stay at any position between the initial position and the active position. If the user resends the temperature adjustment instruction later to increase the wind speed of the air supply device, the distance between the first air guide plate 3 and the fan blade 1 can be increased again.

[0038] In the air supply device of this embodiment, see Figure 3-5 The volute tongue body 2 includes a rotation shaft 24 located at the connection between the volute tongue body 2 and the first air guide plate 3, and the rotation shaft 24 is rotatably connected to the first air guide plate 3 so that the first air guide plate 3 can rotate relative to the volute tongue body 2. Specifically, the first air guide plate 3 is hinged to the volute tongue body 2 through the rotation shaft 24. When the connecting rod 23 pushes the first air guide plate 3, the first air guide plate 3 can be rotated relative to the rotation shaft 24, thereby realizing the adjustment of the spacing between the volute tongue and the fan blade 1.

[0039] In the air supply device of this embodiment, see Figure 3-5 , the transmission mechanism 22 comprises: A swing rod 221 is arranged on the output shaft of the motor; The crankshaft 222 has one end connected to the rocker rod 221 and the other end connected to the connecting rod 23 .

[0040] Specifically, the rocker arm 221, the crankshaft 222 and the hinge point where the rotating shaft 24 is located constitute a hinged four-bar mechanism. By controlling the rotation of the motor 21, the output shaft of the motor 21 drives the rocker arm 221 to rotate, and the crankshaft 222, driven by the rocker arm 221, pushes the connecting rod 23 to move in a direction close to the fan blade 1 or away from the fan blade 1, thereby reducing the distance between the first air guide plate 3 and the fan blade 1 or increasing the distance between the first air guide plate 3 and the fan blade 1.

[0041] In the air supply device of this embodiment, see Figure 2 , the snail tongue structure includes: A sealing groove 25, the sealing groove 25 is recessed and arranged on the side wall of the volute tongue body 2; The second air guide plate 5 has one end connected to the first air guide plate 3 , and the other end connected to the sealing groove 25 . A preset angle is set between the second air guide plate 5 and the first air guide plate 3 .

[0042] Specifically, although the variable baffle of the volute tongue can flexibly adapt to the distance requirements of different states of high and low speeds of the fan blades, splitting the volute tongue will also bring about the problem of air duct sealing. The air supply airflow in the air supply device will return to the interior of the volute tongue body 2, thereby causing air volume loss.

[0043] Therefore, in some embodiments, the drivable volute tongue baffle is designed to be "L-shaped", that is, the second air guide plate 5 and the first air guide plate 3 form an "L-shaped" structure, and the first air guide plate 3 is used at the end of the volute tongue to adjust the distance between the fan blade 1, and the second air guide plate 5 and the sealing groove 25 on the side wall of the volute tongue body 2 form a stop closing structure, thereby sealing the air duct 71 to prevent the air supply flow in the air supply device from returning into the interior of the volute tongue body 2, avoiding air leakage, and achieving the effect of concentrated air outlet.

[0044] In some embodiments, at least a portion of the connecting rod 23 is connected to the second air guide plate 5 , and the connecting rod 23 is used to push the second air guide plate 5 and the first air guide plate 3 to rotate together.

[0045] In some embodiments, the connecting rod 23 includes a connecting rod body and a first connecting rod and a second connecting rod respectively connected to the connecting rod body, the first connecting rod is connected to the leeward side of the first wind guide plate 3, and the second connecting rod is connected to the leeward side of the second wind guide plate 5, so that by pushing the connecting rod 23, the second wind guide plate 5 and the first wind guide plate 3 can be pushed to rotate together at the same time.

[0046] In the air supply device of this embodiment, see Figure 2 , the sealing groove 25 comprises: The first connecting wall 251 and the second connecting wall 252 are connected to each other, and a preset angle is set between the first connecting wall 251 and the second connecting arm; wherein, When the first wind guide plate 3 is located at the initial position, the leeward side of the second wind guide plate 5 is connected to the first connecting wall 251 . When the first wind guide plate 3 is located at the active position, the second wind guide plate 5 is spaced apart from the first connecting wall 251 and / or the second connecting wall 252 .

[0047] Specifically, when the first wind guide plate 3 is in the initial position, the leeward side of the second wind guide plate 5 is connected to the first connecting wall 251, and the tail of the baffle plate cooperates with the stopper to form a sealed air duct space. When the baffle plate is in a low wind speed and is pushed forward, the first wind guide plate 3 is in the active position or between the initial position and the active position. Due to the rotation and advancement of the first wind guide plate 3, the second wind guide plate 5 is spaced from the first connecting wall 251 and / or the second connecting wall 252, that is, a gap appears between the second wind guide plate 5 and the first connecting wall 251 and the second connecting wall 252.

[0048] In the air supply device of this embodiment, see Figure 2 The volute tongue structure includes a sealing component 253 fixedly arranged on the second air guide plate 5. The sealing component 253 is located between the second air guide plate 5 and the inner wall surface of the sealing groove 25 to prevent the air supply airflow from entering the volute tongue body 2. In order to solve the problem that a gap appears between the second air guide plate 5 and the first connecting wall 251 and the second connecting wall 252 due to the rotation and advancement of the first air guide plate 3, a sealing rubber strip is added to the edge of the second air guide plate 5, and the sealing component 253 abuts against the inner wall surface of the sealing groove 25 to achieve further air duct sealing and concentrated air outlet. In this way, when the first air guide plate 3 is in any position, the air duct can be sealed to ensure the air supply volume.

[0049] In the air supply device of this embodiment, see Figure 2 The sealing component 253 is fixedly arranged on the end surface of the second air guide plate 5, and the sealing component 253 is located between the second connecting wall 252 and the second air guide plate 5. When the first air guide plate 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 rear end surface of the second air guide plate 5, and when the first air guide plate 3 is in the active position or between the initial position and the active position, the sealing component 253 cooperates with the second connecting wall 252 to form a new sealed air duct space, thereby achieving the effect of further sealing the air duct and concentrating the air outlet.

[0050] In the air supply device of this embodiment, see Figure 6 A drainage structure 6 is provided on one side of the first air guide plate 3 close to the fan blade 1. The drainage structure 6 includes a plurality of drainage channels arranged at intervals along the extension direction of the first air guide plate 3. The drainage channels are used to guide the air flow between the first air guide plate 3 and the fan blade 1. The drainage structure 6 is provided to guide the outlet direction of the air flow, so that the air flow can be concentrated, the air outlet effect is guaranteed to be stable, and the effect of concentrated air outlet is achieved.

[0051] In the air supply device of this embodiment, see Figure 1The air supply device includes a volute structure 7, which forms an air supply housing with the volute tongue structure. The air supply housing has an air duct 71 and an air inlet and an air outlet 72 connected to the air duct 71, and a fan blade 1 is arranged in the air duct 71.

[0052] In some embodiments, the air supply device is a cross-flow blower.

[0053] Example 2 In the air conditioner of this embodiment, the air conditioner includes the above-mentioned air supply device.

[0054] In the air conditioner of the present embodiment, by adopting the above-mentioned air supply device, a first air guide plate 3 is designed on the volute tongue structure, and the first air guide plate 3 is movably connected to the volute tongue body 2, so that the spacing between the first air guide plate 3 and the fan blade 1 can be adjusted. When the air supply device is at a low speed, the first air guide plate 3 is pushed forward to reduce the gap between the volute tongue structure and the fan blade 1, thereby blocking more air volume from entering between the volute tongue structure and the fan blade 1 and causing air volume loss, thereby reducing air volume loss and achieving the effect of increasing the air supply volume of the air supply device; by setting a detection device 4, when the wind speed changes and the remote control air volume changes, the first air guide plate 3 is driven to change position in time to match the position where the high and low air volumes should be, so that the fan speed and wind speed can be detected in time and effectively, and the problem of driving timing of the variable baffle is solved, so as to ensure that the air supply efficiency of the air supply device can reach the highest at different wind speeds.

[0055] In this way, when the wind speed is too high, the rotation noise of the air supply device is prevented from being loud, and the air volume can be prevented from hitting the wall of the volute tongue to cause air volume loss, and the rotation noise of the air duct at a high power consumption speed can also be 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 air volume in the low power consumption state is increased. In the air supply device of this 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, thereby solving the technical problem of low air outlet efficiency of the air conditioner in the existing air conditioner in the related technology due to the fixed gap between the volute tongue and the fan blade.

[0056] Example 3 In the air supply control method of this embodiment, see Fig.11 The air supply control method is applicable to the above-mentioned air supply device, and the air supply control method includes: Detecting the air supply speed at the air outlet 72 of the air supply device; According to the air supply speed, the first air guide plate 3 is controlled to move so as to change the distance between the first air guide plate 3 and the fan blade 1 .

[0057] It should be noted that the supply air temperature needs to be obtained when the air supply device is started and the temperature is adjusted according to the supply air temperature. If the wind speed is currently in a high state, the first wind baffle remains stationary, so that the first air guide plate 3 remains stationary in the initial position. After the air supply device has been running for a period of time, when the remote control signal or temperature adjustment instruction is obtained again, the supply air temperature also needs to be obtained and the temperature is adjusted according to the supply air temperature.

[0058] In the air supply control method of the present embodiment, by controlling the first air guide plate 3, the distance between the first air guide plate 3 and the fan blade 1 can be adjusted. When the air supply device is at a low speed, the first air guide plate 3 is pushed forward to reduce the gap between the volute tongue structure and the fan blade 1, thereby blocking more air volume from entering between the volute tongue structure and the fan blade 1 and causing air volume loss, thereby reducing air volume loss and achieving the effect of increasing the air supply volume of the air supply device. By adopting the detection device 4, when the wind speed changes and the remote control air volume changes, the first air guide plate 3 is driven to change position in time to match the position where the high and low air volumes should be, so that the fan speed and wind speed can be detected in time and effectively, and the problem of driving timing of the variable baffle is solved, thereby ensuring that the air supply efficiency of the air supply device can reach the highest at different wind speeds.

[0059] In the control method of the present embodiment, when the wind speed of the air supply device is too high, the rotation noise of the air supply device is prevented from being loud, and the air volume is prevented from hitting the wall of the volute tongue to cause air volume loss, and the rotation noise of the air duct at a high power consumption speed can also be 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 air volume in the low power consumption state is increased. A "variable baffle" is provided in the air supply device of the present embodiment, which can change the distance between the volute tongue and the fan blade 1 according to different wind speeds, thereby solving the technical problem of low air outlet efficiency of the air conditioner in the existing air conditioner in the related technology due to the fixed gap between the volute tongue and the fan blade.

[0060] In the air supply control method of this embodiment, according to the air supply speed, controlling the first air guide plate 3 activities, including; According to the air supply speed, the air supply state of the air supply device is judged; The activity of the first air guide plate 3 is controlled according to the air supply state and / or air supply speed.

[0061] Specifically, by judging the air supply speed, it is determined whether the air supply device is currently in a low-speed operation state or a high-speed operation state. According to the air supply state or the air supply speed, the first air guide plate 3 is promptly driven to change position to match the positions where the high and low air volumes should be, thereby ensuring that the air supply efficiency of the air supply device can reach the highest under different wind speeds.

[0062] In the air supply control method of this embodiment, judging the air supply state of the air supply device according to the air supply speed includes: If the air supply speed R ≥ Arpm, the air supply device is in a high wind speed state; According to the air supply state and / or air supply speed, the activity of the first air guide plate 3 is controlled, specifically: 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 the first distance X1.

[0063] Specifically, when the air supply device is in a high wind speed state, it is necessary to ensure that the first air guide plate 3 is 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 has just been started, the first air guide plate 3 remains stationary. 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.

[0064] In some embodiments, the value of A is 1000 rpm.

[0065] In the air supply control method of this embodiment, judging the air supply state of the air supply device according to the air supply speed includes: If the air supply speed R < Arpm, the air supply device is in a low wind speed state; According to the air supply state and / or air supply speed, the activity of the first air guide plate 3 is controlled, specifically: If the air supply device is in a low wind speed state, the activity of the first air guide plate 3 is controlled according to the air supply speed.

[0066] Specifically, if the air supply device is in a low wind speed state, the activity of the first air guide plate 3 is controlled according to the air supply speed to match the positions where high and low air volumes should be, thereby ensuring that the air supply efficiency of the air supply device can reach the highest level at different wind speeds.

[0067] In the air supply control method of this embodiment, if the air supply device is in a low wind speed state, the activity of the first air guide plate 3 is controlled according to the air supply speed, including: 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; 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; If the air supply speed satisfies B3≤R<Arpm, the first air guide plate 3 is controlled to move so that the spacing between the first air guide plate 3 and the fan blade 1 is the second spacing X2; wherein, B1<B2<B3<A, X4<X3<X2<X1.

[0068] In some embodiments, the maximum speed of the fan blade is 1200 rpm, and the corresponding relationship between the fan blade speed and the snail tongue spacing is as follows: Rotation speed 600≤R<700rpm, fourth spacing X4=3.1mm; Rotation speed 700≤R<850rpm, third spacing X3=4.7mm; Rotation speed 850≤R<1000rpm, second spacing X2=6.3mm; The rotation speed R≥1000rpm, the first spacing X1=7.8mm.

[0069] In the air supply control method of this embodiment, the air supply control method includes: When the air supply device is turned off, determining whether the first air guide plate 3 is in the initial position; If the first air guide plate 3 is not in the initial position, the first air guide plate 3 is controlled to return to the initial position so that the distance between the first air guide plate 3 and the fan blade 1 is the first distance X1.

[0070] Specifically, when the air supply device is turned off, the first air guide plate 3 is controlled to be reset to the initial state, ensuring that the first air guide plate 3 is in the initial position when the air supply device is turned on, thereby achieving rapid cooling of the air conditioner.

[0071] In the air supply control method of this embodiment, the method for controlling the activity of the first air guide plate 3 includes: The control motor 21 rotates, and the output shaft of the motor 21 drives the rocker arm 221 to rotate. The crankshaft 222, driven by the rocker arm 221, pushes the connecting rod 23 to move in a direction close to the fan blade 1 or away from the fan blade 1, thereby reducing the distance between the first air guide plate 3 and the fan blade 1 or increasing the distance between the first air guide plate 3 and the fan blade 1.

[0072] Example 4 The variable baffle volute tongue structure described in this embodiment is composed of a volute tongue body 2, a first air guide plate 3, a second air guide plate 5, a transmission mechanism 22, a motor 21 and other structures, and forms a complete air supply device with the fan blades 1 and the air duct 71 of the crossflow fan. In a normal state, the first air guide plate 3 is in a stationary state, and a connecting rod 23 is provided on the first air guide plate 3 and the second air guide plate 5. The transmission mechanism 22 can push the connecting rod 23 of the first air guide plate 3 and the second air guide plate 5 forward under the drive of the motor 21, thereby shortening the gap between the volute tongue and the fan blade 1.

[0073] When the consumer turns on the air conditioner and hopes to cool quickly, the air supply device starts with high power consumption and rotates at high speed to achieve rapid air discharge. At this time, the first air guide plate 3 and the second air guide plate 5 are located at the initial position, and a certain first spacing X1 is maintained between the fan blade 1. Figure 3The initial position shown is the maximum gap of 7.8mm, which prevents excessive wind speed, loud rotation noise, and wind volume hitting the wall of the volute tongue to cause air volume loss; it can also control the rotation noise of the air duct at high power consumption and speed. After rapid cooling and cooling, the air conditioner enters a low power consumption stable state, and the speed of the fan blade 1 decreases. At this time, the volute tongue baffle is driven by the transmission mechanism 22 to rotate in the direction of the fan blade 1, reducing the air guide distance between the volute tongue and the fan blade 1. Figure 5 The first spacing X4 is shown. The first spacing X4 is the minimum spacing of 3.1mm, which can reduce the air loss and increase the air volume in the low power consumption state. Two positioning points are set between the maximum and minimum gaps between the volute tongue and the fan blade 1, which are located at the third spacing of 4.7mm and the second spacing of 6.3mm, respectively, corresponding to two speed ranges. Based on the maximum speed of the fan blade of 1200rpm, the corresponding relationship between the fan blade speed and the volute tongue spacing is as follows: When the speed R≥1000rpm, the clearance between the volute tongue and the fan blade is X1=7.8mm; Speed ​​850≤R<1000rpm, clearance between volute tongue and fan blade X2=6.3mm; Speed ​​700≤R<850rpm, clearance between volute tongue and fan blade X3=4.7mm; The speed is 600≤R<700rpm, and the gap between the volute tongue and the fan blade is X4=3.1mm.

[0074] Although the variable volute tongue baffle can flexibly adapt to the distance requirements of the different states of high and low speeds of the fan blades, the problem of air duct sealing will arise when the volute tongue is split. Therefore, the variable baffle is designed to be "L-shaped", that is, the variable baffle includes a first air guide plate 3 and a second air guide plate 5, and a sealing component 253, such as a sealing strip or other sealing component 253, is installed on the second air guide plate 5, that is, on the tail of the baffle, and a sealing groove 25 is designed on the side wall of the matching volute tongue body 2 to form a stop structure, when the first air guide plate 3 is in a high wind speed state. The tail of the second air guide plate 5 cooperates with the sealing groove 25 to form a sealed air duct space. When the first air guide plate 3 is in a low wind speed state, due to the rotation and advancement of the first air guide plate 3, a gap appears between the tail of the second air guide plate 5 and the inner wall of the sealing groove 25. At this time, the sealing component 253 cooperates with the inner wall of the sealing groove 25 to form a new sealed air duct space, such as Figure 2 shown.

[0075] In order to more accurately adjust the position of the first air guide plate 3 according to the air outlet speed, a control element for measuring the wind speed is installed at the snail tongue air outlet. The element can also receive remote control signals. When the fan speed is lower than A m / s or the air conditioner receives a remote control command for low power operation, the signal starts the motor to start running and drives the first air guide plate 3 to the corresponding position of low speed; when the air conditioner stops running, the first air guide plate 3 will automatically reset to the default high power consumption position. The driving logic is as follows Fig.12 shown. It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0076] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0077] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0078] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0079] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An air supply device, characterized in that: include: A fan blade (1), wherein the fan blade (1) is rotatably arranged; A volute tongue structure, the volute tongue structure comprising a volute tongue body (2) and a first air guide plate (3) connected to the volute tongue body (2), the first air guide plate (3) being located at an end of the volute tongue body (2) close to the fan blade (1), the first air guide plate (3) being movably connected to the volute tongue body (2) so as to adjust the distance between the first air guide plate (3) and the fan blade (1); A detection device (4), the detection device (4) being used to detect the air supply speed at the air outlet (72) of the air supply device; A control device, the control device being connected to the detection device (4) by signal, and the control device controlling the movement of the first air guide plate (3) according to the air supply speed, so as to change the distance between the first air guide plate (3) and the fan blade (1).

2. The air supply device according to claim 1, characterized in that: The snail tongue structure comprises: A motor (21) disposed in the volute tongue body (2); A transmission mechanism (22), the transmission mechanism (22) being connected to the motor (21); a connecting rod (23), one end of the connecting rod (23) being connected to the first air guide plate (3), the other end of the connecting rod (23) being connected to the transmission mechanism (22), the connecting rod (23) being movably arranged in a direction approaching the fan blade (1) or away from the fan blade (1) so as to drive the first air guide plate (3) to switch between an initial position connected to the volute tongue body (2) and an active position; wherein: When the first wind guide plate (3) is located at the initial position, the distance between the first wind guide plate (3) and the fan blade (1) is a first distance, and when the first wind guide plate (3) is located at the active position, the distance between the first wind guide plate (3) and the fan blade (1) is a fourth distance, and the first distance is greater than the fourth distance.

3. The air supply device according to claim 2, characterized in that: The volute tongue body (2) comprises a rotation shaft (24) located at a connection between the volute tongue body (2) and the first air guide plate (3), the rotation shaft (24) being rotationally connected to the first air guide plate (3) so that the first air guide plate (3) rotates relative to the volute tongue body (2).

4. The air supply device according to claim 3, characterized in that: The transmission mechanism (22) comprises: A swing rod (221) is arranged on an output shaft of the motor (21); A crankshaft (222), one end of the crankshaft (222) being connected to the rocker rod (221), and the other end of the crankshaft (222) being connected to the connecting rod (23).

5. The air supply device according to claim 2, characterized in that: The snail tongue structure comprises: A sealing groove (25), the sealing groove (25) being recessed and arranged on a side wall of the volute tongue body (2); A second air guide plate (5), one end of the second air guide plate (5) being connected to the first air guide plate (3), the other end of the second air guide plate (5) being connected to the sealing groove (25), and a preset angle being provided between the second air guide plate (5) and the first air guide plate (3).

6. The air supply device according to claim 5, characterized in that: The sealing groove (25) comprises: A first connecting wall (251) and a second connecting wall (252) are connected to each other, and a preset angle is set between the first connecting wall (251) and the second connecting arm; wherein: When the first wind guide plate (3) is located at the initial position, the leeward side of the second wind guide plate (5) is connected to the first connecting wall (251); when the first wind guide plate (3) is located at the active position, the second wind guide plate (5) is spaced from the first connecting wall (251) and / or the second connecting wall (252).

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

8. The air supply device according to claim 7, characterized in that: The sealing component (253) is fixedly arranged on the end surface of the second air guide plate (5); the sealing component (253) is located between the second connecting wall (252) and the second air guide plate (5); when the first air guide plate (3) is located in the active position, the sealing component (253) abuts against the second connecting wall (252).

9. The air supply device according to claim 1, characterized in that: A drainage structure (6) is provided on a side of the first air guide plate (3) close to the fan blade (1), the drainage structure (6) comprising a plurality of drainage channels arranged at intervals along the extension direction of the first air guide plate (3), the drainage channels being used to guide the supply air flow flowing between the first air guide plate (3) and the fan blade (1).

10. The air supply device according to claim 1, characterized in that: The air supply device comprises a volute structure (7), wherein the volute structure (7) and the volute tongue structure form an air supply housing, wherein the air supply housing has an air duct (71) and an air inlet and an air outlet (72) connected to the air duct (71), and the air blade (1) is arranged in the air duct (71).

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

12. A method for controlling air supply, characterized in that: The air supply control method is applicable to the air supply device according to any one of claims 1 to 10, and the air supply control method comprises: Detecting the air supply speed at the air outlet (72) of the air supply device; According to the air supply speed, the movement of the first air guide plate (3) is controlled to change the distance between the first air guide plate (3) and the fan blade (1).

13. The air supply control method according to claim 12, characterized in that: The control of the first air guide plate (3) according to the air supply speed includes: According to the air supply speed, determining the air supply state of the air supply device; The activity of the first air guide plate (3) is controlled according to the air supply state and / or air supply speed.

14. The air supply control method according to claim 13, characterized in that: The step of judging the air supply state of the air supply device according to the air supply speed comprises: If the air supply speed R ≥ Arpm, the air supply device is in a high wind speed state; The controlling the activity of the first air guide plate (3) according to the air supply state and / or air supply speed is specifically: 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.

15. The air supply control method according to claim 14, characterized in that: The step of judging the air supply state of the air supply device according to the air supply speed comprises: If the air supply speed R < Arpm, the air supply device is in a low wind speed state; The controlling the activity of the first air guide plate (3) according to the air supply state and / or air supply speed is specifically: If the air supply device is in a low wind speed state, the activity of the first air guide plate (3) is controlled according to the air supply speed.

16. The air supply control method according to claim 15, characterized in that: 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, comprising: 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 a fourth distance X4; 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 a third distance X3; 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 a second distance X2; wherein B1<B2<B3<A, and X4<X3<X2<X1.

17. The air supply control method according to claim 16, characterized in that: The air supply control method comprises: When the air supply device is turned off, determining whether the first air guide plate (3) is in an initial position; If the first air guide plate (3) is not in the initial position, the first air guide plate (3) is controlled to return to the initial position so that the distance between the first air guide plate (3) and the fan blade (1) is the first distance X1.

18. The air supply control method according to claim 12, characterized in that: The method for controlling the activity of the first air guide plate (3) comprises: The motor (21) is controlled to rotate, and the output shaft of the motor (21) drives the swing rod (221) to rotate. The crankshaft (222) is driven by the swing rod (221) to push the connecting rod (23) to move in a direction approaching the fan blade (1) or away from the fan blade (1), thereby reducing the distance between the first air guide plate (3) and the fan blade (1) or increasing the distance between the first air guide plate (3) and the fan blade (1).

Images