An air supply device, an air conditioner, and an air supply control method.

Abstract

This invention provides an air supply device, an air conditioner, and an air supply control method, comprising: a fan blade rotatably mounted; a volute structure including a volute body and a first guide plate connected to the volute body, the first guide plate being located at the end of the volute body near the fan blade, and movably connected to the volute body to adjust the distance between the first guide plate and the fan blade; a detection device for detecting the air supply speed at the air outlet of the air supply device; and a control device signal-connected to the detection device, which controls the movement of the first guide plate according to the air supply speed to change the distance between the first guide plate and the fan blade. The air supply device of this invention provides a "variable baffle" that can change the distance between the volute and the fan blade according to different wind speeds, solving the technical problem in existing air conditioners where the fixed gap between the volute and the fan blade leads to low air supply efficiency.

Description

Technical Field

[0001] This invention relates to the field of fan structure technology, specifically to an air supply device, an air conditioner, and an air supply control method. Background Technology

[0002] For air conditioners, the gap between the fan and the wall of the volute affects air delivery efficiency, air volume, and duct noise. When the fan operates at low power consumption and low speed, the airflow is low and the noise is low. With a larger gap between the volute and the fan, some airflow will re-enter the volute. When the fan operates at high power consumption and high speed, the airflow increases, but so does the noise. If the gap between the volute and the fan is small, some airflow will impact the wall, increasing rotational noise and resulting in a loss and waste of airflow and power.

[0003] In existing cabinet air conditioners, taking cross-flow fan-driven systems as an example, a certain gap is maintained between the fan blades and the volute to ensure acceptable noise levels and reduce airflow loss at high speeds. However, this significantly reduces airflow and fan efficiency when the fan blades are running at low speeds. Improving the gap between the volute and the fan blades to achieve a balance between low-speed and high-speed airflow has become a crucial optimization direction.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this 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 of low air supply efficiency in existing air conditioners due to the fixed gap between the volute tongue and the fan blades.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: providing an air supply device, comprising:

[0007] Fan blades, fan blades are rotatable;

[0008] 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 the end of the volute tongue body near the fan blade. 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.

[0009] The detection device is used to detect the air delivery speed at the air outlet of the air supply device.

[0010] The control device is connected to the detection device by signal. The control device controls the movement of the first air guide plate according to the air supply speed, so as to change the distance between the first air guide plate and the fan blade.

[0011] Furthermore, the cochlear tongue structure includes:

[0012] The motor is located in the volute tongue body;

[0013] The transmission mechanism is connected to the motor;

[0014] 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, is movably arranged along a direction close to or away from the fan blades to switch the first air guide plate between an initial position and an active position connected to the volute tongue body; wherein...

[0015] When the first air guide plate is in the initial position, the distance between the first air guide plate and the fan blade is the first distance. When the first air guide plate is in the movable position, the distance between the first air guide plate and the fan blade is the fourth distance. The first distance is greater than the fourth distance.

[0016] Furthermore, the volute tongue body includes a rotating shaft located at the connection between the volute tongue body and the first air guide plate. The rotating shaft is rotatably connected to the first air guide plate so that the first air guide plate rotates relative to the volute tongue body.

[0017] Furthermore, the transmission mechanism includes:

[0018] The rocker arm is mounted on the output shaft of the motor;

[0019] The crankshaft has one end connected to the rocker arm and the other end connected to the connecting rod.

[0020] Furthermore, the cochlear tongue structure includes:

[0021] A sealing groove is recessed on the side wall of the volute tongue body;

[0022] The second air guide plate has one end connected to the first air guide plate and the other end connected to the sealing groove. A preset angle is provided between the second air guide plate and the first air guide plate.

[0023] Furthermore, the sealing groove includes:

[0024] A first connecting wall and a second connecting wall are interconnected, and a preset included angle is provided between the first connecting wall and the second connecting arm; wherein...

[0025] When the first air guide plate is in the initial position, the leeward side of the second air guide plate is connected to the first connecting wall. When the first air guide plate is in the movable position, the second air guide plate is spaced apart from the first connecting wall and / or the second connecting wall.

[0026] Furthermore, the volute structure includes a sealing component fixedly mounted on the second air guide plate. The sealing component is located between the second air guide plate and the inner wall of the sealing groove to prevent the airflow from entering the volute body.

[0027] Furthermore, the sealing component is fixedly disposed on the end face of the second air guide plate. The sealing component is located between the second connecting wall and the second air guide plate. When the first air guide plate is in the movable position, the sealing component abuts against the second connecting wall.

[0028] Furthermore, a flow-guiding structure is provided on the side of the first air guide plate near the fan blade. The flow-guiding structure includes a number of flow-guiding channels spaced apart along the extension direction of the first air guide plate. The flow-guiding channels are used to guide the airflow between the first air guide plate and the fan blade.

[0029] Furthermore, the air supply device includes a volute structure, which together with the volute tongue structure forms an air supply housing. The air supply housing has an air duct and an air inlet and an air outlet connected to the air duct. Fan blades are installed in the air duct.

[0030] An air conditioner includes an air supply device as described above.

[0031] An air supply control method, applicable to the aforementioned air supply device, the air supply control method comprising:

[0032] Detect the air delivery speed at the air outlet of the air supply device;

[0033] The movement of the first air guide plate is controlled according to the air supply speed to change the distance between the first air guide plate and the fan blade.

[0034] Furthermore, based on the air supply velocity, the movement of the first air guide plate is controlled, including:

[0035] Determine the air supply status of the air supply device based on the air supply speed;

[0036] The movement of the first air guide plate is controlled according to the air supply status and / or air supply speed.

[0037] Furthermore, based on the air supply velocity, the air supply status of the air supply device is determined, including:

[0038] If the air supply speed R ≥ A rpm, then the air supply device is in a high air speed state;

[0039] The movement of the first air guide plate is controlled according to the air supply status and / or air supply speed, specifically as follows:

[0040] If the air supply device is in a high wind speed state, the first air guide plate is controlled to be in the initial position, so that the distance between the first air guide plate and the fan blade is the first distance X1.

[0041] Furthermore, based on the air supply velocity, the air supply status of the air supply device is determined, including:

[0042] If the air supply speed R < A rpm, the air supply device is in a low air speed state;

[0043] The movement of the first air guide plate is controlled according to the air supply status and / or air supply speed, specifically as follows:

[0044] If the air supply device is in a low wind speed state, the movement of the first air guide plate is controlled according to the air supply speed.

[0045] Furthermore, if the air supply device is in a low wind speed state, the movement of the first air guide plate is controlled according to the air supply speed, including:

[0046] If the air delivery speed satisfies B1≤R<B2rpm, then control the movement of the first air guide plate so that the distance between the first air guide plate and the fan blade is the fourth distance ×4.

[0047] If the air delivery speed satisfies B2≤R<B3rpm, then control the movement of the first air guide plate so that the distance between the first air guide plate and the fan blade is the third distance ×3.

[0048] If the air supply speed satisfies B3≤R<Arpm, then control the movement of the first air guide plate so that the distance between the first air guide plate and the fan blade is the second distance X2; where B1<B2<B3<A, X4<X3<X2<X1.

[0049] Furthermore, the air supply control methods include:

[0050] When the air supply device is turned off, determine whether the first air guide plate is in the initial position;

[0051] If the first air guide plate is not in the initial position, control the first air guide plate 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.

[0052] Furthermore, the method for controlling the movement of the first air guide plate includes:

[0053] The motor is controlled to rotate, and the output shaft of the motor drives the rocker arm to rotate. The crankshaft, driven by the rocker arm, pushes the connecting rod to move along the direction closer to or farther from the fan blade, thereby reducing or increasing the distance between the first air guide plate and the fan blade.

[0054] Beneficial effects:

[0055] 1. By designing a first air guide plate on the volute structure, which is movably connected to the volute body, the distance between the first air guide plate and the fan blades can be adjusted. When the air supply device is at low speed, the first air guide plate is pushed forward, reducing the gap between the volute structure and the fan blades. This prevents more airflow from entering between the volute structure and the fan blades, thus reducing airflow loss and increasing the airflow of the air supply device. Furthermore, by setting a detection device, the first air guide plate is promptly repositioned to match the appropriate position for high and low airflow when the wind speed or remote-controlled airflow changes. This allows for timely and effective detection of fan speed and wind speed, solving the problem of driving the variable baffle. The timing of the air supply device is addressed to ensure that its efficiency reaches its maximum at different wind speeds. When the wind speed is too high, it prevents excessive rotational noise and airflow loss due to airflow impacting the volute wall, while also controlling the rotational noise of the high-power-consumption duct. When the wind speed is too low, it reduces the guide distance between the volute and the fan blades, minimizing airflow loss and increasing airflow in low-power conditions. This embodiment provides a "variable baffle" that adjusts the distance between the volute and the fan blades according to different wind speeds, solving the technical problem of low airflow efficiency in existing air conditioners due to a fixed gap between the volute and the fan blades.

[0056] 2. The driveable volute tongue baffle is designed as an "L-shape", that is, the second air guide plate and the first air guide plate form an "L-shape" structure. The first air guide plate is used at the end of the volute tongue to adjust the distance between it and the fan blade, while the second air guide plate and the sealing groove on the side wall of the volute tongue body form a stop sealing structure, thereby sealing the air duct 7, preventing the air supply air in the air supply device from re-entering the volute tongue body, preventing air leakage, and achieving the effect of centralized air supply.

[0057] 3. To address the issue of a gap appearing between the second air guide plate and the first and second connecting walls 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. The sealing component abuts against the inner wall of the sealing groove, achieving further sealing of the air duct and centralized air output. In this way, the air duct can be sealed regardless of the position of the first air guide plate, ensuring the air supply volume. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the internal structure of the air supply device used in an embodiment of the present invention;

[0059] Figure 2 yes Figure 1 A magnified view at point D;

[0060] Figure 3 This is a schematic diagram of the first air guide plate of the air supply device used in the embodiment of the present invention in its initial position;

[0061] Figure 4 yes Figure 2 A magnified view at point C;

[0062] Figure 5 This is a schematic diagram of the structure of the first air guide plate of the air supply device used in the embodiment of the present invention in the movable position;

[0063] Figure 6 This is a schematic diagram of the air supply device used in an embodiment of the present invention;

[0064] Figure 7 This is a schematic diagram of the structure of the first air guide plate of the air supply device used in an embodiment of the present invention;

[0065] Figure 8 This is a schematic diagram of the structure of the volute tongue body of the air supply device used in an embodiment of the present invention;

[0066] Figure 9 This is a schematic diagram of the airflow guiding structure of the air supply device used in an embodiment of the present invention;

[0067] Figure 10 This is a schematic diagram of the internal structure of the volute tongue structure of the air supply device used in an embodiment of the present invention;

[0068] Figure 11 This is a flowchart of the air supply control method used in the embodiments of the present invention;

[0069] Figure 12 This is a flowchart of a specific embodiment of the air supply control method used in this invention.

[0070] The above figures include the following reference numerals:

[0071] 1. Fan blade; 2. Volute 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. Air diversion structure; 7. Volute structure; 71. Air duct; 72. Air outlet. Detailed Implementation

[0072] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0073] Example 1

[0074] According to an embodiment of the present invention, an air supply device is provided; please refer to [link / reference]. Figures 1 to 12 ,include:

[0075] Fan blade 1, fan blade 1 is rotatably mounted;

[0076] 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 the end of the volute tongue body 2 near 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.

[0077] Detection device 4 is used to detect the air supply speed at the air outlet 72 of the air supply device;

[0078] The control device is connected to the detection device 4 by signal. The control device controls 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.

[0079] By designing a first air guide plate 3 on the volute structure, which is movably connected to the volute body 2, 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, reducing the gap between the volute structure and the fan blade 1. This prevents more airflow from entering between the volute structure and the fan blade 1, thus reducing airflow loss and increasing the airflow of the air supply device. By setting a detection device 4, the first air guide plate 3 is driven to reposition in time when the wind speed and remote airflow change, matching the position where high and low airflow should be. This allows for timely and effective detection of fan speed and wind speed, solving the problem of the driving timing of the variable baffle and ensuring that the air supply efficiency of the air supply device can reach its maximum under different wind speeds.

[0080] In this way, when the wind speed is too high, it prevents the air supply device from generating excessive rotational noise and the air volume from being lost due to the airflow impacting the volute tongue wall. At the same time, it can also control the rotational noise of the duct at high power consumption speed. When the wind speed is too low, it reduces the air guiding distance between the volute tongue and the fan blade 1, reduces air outlet loss, and increases air volume in low power consumption state. The air supply device in this embodiment provides a "variable baffle" that can change the distance between the volute tongue and the fan blade 1 according to different wind speeds, which solves the technical problem in the related art that the air outlet efficiency of the air conditioner is low because the gap between the volute tongue and the fan blade is fixed.

[0081] Specifically, 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 wind speed is installed at the volute outlet. This element can also receive remote control signals. When the fan speed is lower than Am / s or a remote control command for low power operation is received, the signal starts the motor to start running, driving the first air guide plate 3 to the corresponding position at low speed. When the air conditioner stops running, the first air guide plate 3 will automatically reset to the default high power initial position.

[0082] In the air supply device of this embodiment, see Figure 3-5 The cochlear tongue structure includes:

[0083] Motor 21 is installed in the volute tongue body 2;

[0084] Transmission mechanism 22, which is connected to motor 21;

[0085] A connecting rod 23 is provided, with one end connected to the first air guide plate 3 and the other end connected to the transmission mechanism 22. The connecting rod 23 is movably positioned along a direction close to or away from the fan blade 1, thereby switching the first air guide plate 3 between an initial position and an active position connected to the volute tongue body 2.

[0086] When the first air guide plate 3 is in 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 in the movable 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.

[0087] In some embodiments, the first spacing is 7.8 mm and the fourth spacing is 3.1 mm.

[0088] With the above settings, 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 along the direction close to or away from the fan blade 1, so that the first air guide plate 3 is close to or away from the fan blade 1, realizing the switching of the first air guide plate 3 between the initial position and the active position connected to the volute tongue body 2.

[0089] Specifically, the initial position and the active position are the two maximum limit positions at which the first air guide plate 3 can move. With the above settings, not only can the first air guide plate 3 switch between the initial position and the active position connected to the volute tongue body 2, but the first air guide plate 3 can also be precisely stopped at any position between the initial position and the active position, so as to realize the controllability of the distance adjustment between the volute tongue and the fan blade 1.

[0090] In some embodiments, the air supply device is configured such that when the air supply device is turned on, the first air guide plate 3 is set in the initial position, that is, when the air supply device is started, the first air guide plate 3 is located at the position furthest from the fan blade 1. At this time, when consumers turn on the air supply device, they often hope 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 output. At this time, the first air guide plate 3 is in the initial position, which can increase the airflow and prevent excessive wind speed, large rotation noise, and air volume loss caused by airflow hitting the volute tongue wall. At the same time, it can also control the rotation noise of the air duct at high power consumption and rotation speed. After the cooling temperature stabilizes, the distance between the first air guide plate 3 and the fan blade 1 can be reduced according to the decrease in 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 command 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.

[0091] In the air supply device of this embodiment, see Figure 3-5 The volute tongue body 2 includes a rotating shaft 24 located at the connection between the volute tongue body 2 and the first air guide plate 3. The rotating shaft 24 is rotatably connected to the first air guide plate 3 so that the first air guide plate 3 rotates relative to the volute tongue body 2. Specifically, the first air guide plate 3 is hinged to the volute tongue body 2 via the rotating shaft 24. When the connecting rod 23 pushes the first air guide plate 3, the first air guide plate 3 can rotate relative to the rotating shaft 24, thereby realizing the adjustment of the distance between the volute tongue and the fan blade 1.

[0092] In the air supply device of this embodiment, see Figure 3-5 The transmission mechanism 22 includes:

[0093] The rocker arm 221 is mounted on the output shaft of the motor;

[0094] Crankshaft 222, one end of which is connected to rocker arm 221, and the other end of which is connected to connecting rod 23.

[0095] Specifically, the hinge point where the rocker arm 221, crankshaft 222, and rotating shaft 24 are located constitutes a four-bar linkage. By controlling the rotation of motor 21, the output shaft of motor 21 drives the rocker arm 221 to rotate. Under the drive of rocker arm 221, crankshaft 222 pushes connecting rod 23 to move along the direction closer to or away from fan blade 1, thereby reducing the distance between the first air guide plate 3 and fan blade 1 or increasing the distance between the first air guide plate 3 and fan blade 1.

[0096] In the air supply device of this embodiment, see Figure 2 The cochlear tongue structure includes:

[0097] The sealing groove 25 is recessed on the side wall of the volute tongue body 2;

[0098] 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 provided between the second air guide plate 5 and the first air guide plate 3.

[0099] Specifically, although the variable baffle of the volute tongue can flexibly adapt to the distance requirements of different states of high and low speed of the fan blade, splitting the volute tongue will also bring about the problem of air duct sealing. The air supply air in the air supply device will return into the volute tongue body 2, resulting in air volume loss.

[0100] Therefore, in some embodiments, the drivable volute tongue baffle is designed as an "L-shape", that is, the second air guide plate 5 and the first air guide plate 3 form an "L-shaped" structure. The first air guide plate 3 is used at the end of the volute tongue to adjust the distance between it and the fan blade 1, while the second air guide plate 5 and the sealing groove 25 on the side wall of the volute tongue body 2 form a stop-closure structure, thereby sealing the air duct 71, preventing the air supply airflow in the air supply device from re-entering the interior of the volute tongue body 2, preventing air leakage, and achieving the effect of centralized air supply.

[0101] 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 pushes the second air guide plate 5 and the first air guide plate 3 to rotate together.

[0102] 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 air guide plate 3, and the second connecting rod is connected to the leeward side of the second air guide plate 5. Thus, by pushing the connecting rod 23, the second air guide plate 5 and the first air guide plate 3 can be pushed to rotate together.

[0103] In the air supply device of this embodiment, see Figure 2 The sealing groove 25 includes:

[0104] A first connecting wall 251 and a second connecting wall 252 are interconnected, and a preset included angle is provided between the first connecting wall 251 and the second connecting arm; wherein...

[0105] When the first air guide plate 3 is in the initial position, the leeward side of the second air guide plate 5 is connected to the first connecting wall 251. When the first air guide plate 3 is in the movable position, the second air guide plate 5 is spaced apart from the first connecting wall 251 and / or the second connecting wall 252.

[0106] Specifically, when the first guide plate 3 is in the initial position, the leeward side of the second guide plate 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 advancing forward at a low wind speed, the first guide plate 3 is in the movable position or between the initial position and the movable position. Due to the rotation and advancement of the first guide plate 3, the second guide plate 5 is spaced apart from the first connecting wall 251 and / or the second connecting wall 252, that is, a gap appears between the second guide plate 5 and the first connecting wall 251 and the second connecting wall 252.

[0107] In the air supply device of this embodiment, see Figure 2 The volute structure includes a sealing component 253 fixedly mounted on the second air guide plate 5. The sealing component 253 is located between the second air guide plate 5 and the inner wall of the sealing groove 25 to prevent the airflow from entering the volute body 2. To address the issue of a gap appearing 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. The sealing component 253 abuts against the inner wall of the sealing groove 25, achieving further sealing of the air duct and concentrated airflow. This ensures that the air duct can be sealed regardless of the position of the first air guide plate 3, guaranteeing the airflow volume.

[0108] In the air supply device of this embodiment, see Figure 2 The sealing component 253 is fixedly disposed on the end face 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 in the movable position, the sealing component 253 abuts against the second connecting wall 252. Preferably, the sealing component 253 is fixedly disposed on the tail end face of the second air guide plate 5. When the first air guide plate 3 is in the movable position or between the initial position and the movable position, the sealing component 253 and the second connecting wall 252 make contact, forming a new sealed air duct space, thereby achieving further air duct sealing and concentrated air outlet effects.

[0109] In the air supply device of this embodiment, see Figure 6 A flow-guiding structure 6 is provided on the side of the first air guide plate 3 near the fan blade 1. The flow-guiding structure 6 includes a plurality of flow-guiding channels spaced apart along the extension direction of the first air guide plate 3. The flow-guiding channels are used to guide the airflow between the first air guide plate 3 and the fan blade 1. By setting the flow-guiding structure 6, the airflow direction is guided, so that the airflow can be concentrated and the airflow can be concentrated, ensuring a stable airflow effect and achieving the effect of concentrated airflow.

[0110] In the air supply device of this embodiment, see Figure 1The air supply device includes a volute structure 7, which together with the volute tongue structure forms an air supply housing. The air supply housing has an air duct 71 and an air inlet and an air outlet 72 connected to the air duct 71. A fan blade 1 is installed in the air duct 71.

[0111] In some embodiments, the air supply device is a cross-flow fan.

[0112] Example 2

[0113] In this embodiment of the air conditioner, the air conditioner includes the air supply device described above.

[0114] In the air conditioner of this embodiment, by adopting the above-mentioned air supply device, a first air guide plate 3 is designed on the volute structure. The first air guide plate 3 is movably connected to the volute body 2, thereby adjusting the distance between the first air guide plate 3 and the fan blade 1. When the air supply device is at a low speed, the first air guide plate 3 is pushed forward, making the gap between the volute structure and the fan blade 1 smaller, blocking more airflow from entering between the volute structure and the fan blade 1 and causing airflow loss, thus reducing airflow loss and achieving the effect of increasing the airflow of the air supply device. By setting a detection device 4, when the wind speed and remote control airflow change, the first air guide plate 3 is driven to change position in time to match the position where high and low airflow should be. The fan speed and wind speed can be detected in a timely and effective manner, solving the problem of the driving timing of the variable baffle, and ensuring that the air supply efficiency of the air supply device can reach the maximum under different wind speeds.

[0115] In this way, when the wind speed is too high, it prevents the air supply device from generating excessive rotational noise and the air volume from being lost due to the airflow impacting the volute tongue wall. At the same time, it can also control the rotational noise of the duct at high power consumption speed. When the wind speed is too low, it reduces the air guiding distance between the volute tongue and the fan blade 1, reduces air outlet loss, and increases air volume in low power consumption state. The air supply device in this embodiment provides a "variable baffle" that can change the distance between the volute tongue and the fan blade 1 according to different wind speeds, which solves the technical problem in the related art that the air outlet efficiency of the air conditioner is low because the gap between the volute tongue and the fan blade is fixed.

[0116] Example 3

[0117] In the air supply control method of this embodiment, see... Figure 11 The air supply control method is applicable to the above-mentioned air supply device, and the air supply control method includes:

[0118] Detect the air supply velocity at the air outlet 72 of the air supply device;

[0119] The movement of the first air guide plate 3 is controlled according to the air supply speed to change the distance between the first air guide plate 3 and the fan blade 1.

[0120] It should be noted that the supply air temperature needs to be obtained when the air supply device is started, and the control is made according to the supply air temperature. If the current wind speed is high, the first baffle plate remains stationary, so that the first air guide plate 3 is stationary in the initial position. When the air supply device has been running for a period of time and receives a remote control signal or temperature adjustment command again, the supply air temperature also needs to be obtained, and the control is made according to the supply air temperature.

[0121] In the air supply control method of this 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, so that the gap between the volute structure and the fan blade 1 is reduced, blocking more airflow from entering between the volute structure and the fan blade 1 and causing airflow loss. This reduces airflow loss and achieves the effect of increasing the air supply volume of the air supply device. By using the detection device 4, when the wind speed and remote control airflow change, the first air guide plate 3 is driven to change position in time to match the position where the high and low airflow should be. This can detect the fan speed and wind speed in a timely and effective manner, solve the problem of the driving timing of the variable baffle, and ensure that the air supply efficiency of the air supply device can reach the maximum under different wind speeds.

[0122] In the control method of this embodiment, when the air supply device has a high wind speed, it prevents the air supply device from generating excessive rotational noise and the air volume from being lost due to the air volume impacting the volute tongue wall. At the same time, it can also control the rotational noise of the duct at high power consumption speed. When the wind speed is too low, it reduces the air guiding distance between the volute tongue and the fan blade 1, reduces the air outlet loss, and increases the air volume in the low power consumption state. The air supply device in this embodiment provides a "variable baffle" that can change the distance between the volute tongue and the fan blade 1 according to different wind speeds, which solves the technical problem in the related art that the air outlet efficiency of the air conditioner is low because the gap between the volute tongue and the fan blade is fixed.

[0123] In the air supply control method of this embodiment, controlling the movement of the first air guide plate 3 according to the air supply speed includes:

[0124] Determine the air supply status of the air supply device based on the air supply speed;

[0125] The movement of the first air guide plate 3 is controlled according to the air supply status and / or air supply speed.

[0126] Specifically, by judging the air supply speed, it can be determined whether the air supply device is currently in a low-speed or high-speed operating state. Based on the air supply state or air supply speed, the first air guide plate 3 is driven to change position in a timely manner to match the position where the high and low air volumes should be, so as to ensure that the air supply efficiency of the air supply device can reach the maximum under different air speeds.

[0127] In the air supply control method of this embodiment, determining the air supply state of the air supply device based on the air supply velocity includes:

[0128] If the air supply speed R ≥ A rpm, then the air supply device is in a high air speed state;

[0129] The movement of the first air guide plate 3 is controlled according to the air supply status and / or air supply speed, specifically as follows:

[0130] If the air supply device is in a high wind speed state, the first air guide plate 3 is controlled 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.

[0131] Specifically, when the air supply device is in a high-speed state, it is necessary to ensure that the first air guide plate 3 is in its 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 its initial position, the first air guide plate 3 is controlled to rotate to the initial position.

[0132] In some embodiments, the value of A is 1000 rpm.

[0133] In the air supply control method of this embodiment, determining the air supply state of the air supply device based on the air supply velocity includes:

[0134] If the air supply speed R < A rpm, the air supply device is in a low air speed state;

[0135] The movement of the first air guide plate 3 is controlled according to the air supply status and / or air supply speed, specifically as follows:

[0136] 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.

[0137] 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, matching the position where the high and low air volumes should be, so as to ensure that the air supply efficiency of the air supply device can reach the maximum under different wind speeds.

[0138] In the air supply control method of this 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:

[0139] If the air supply speed satisfies B1≤R<B2rpm, then control the first air guide plate 3 to move so that the distance between the first air guide plate 3 and the fan blade 1 is the fourth distance ×4.

[0140] If the air supply speed satisfies B2≤R<B3rpm, then control the first air guide plate 3 to move so that the distance between the first air guide plate 3 and the fan blade 1 is the third distance X3.

[0141] If the air supply speed satisfies B3≤R<Arpm, then control the first air guide plate 3 to move so that the distance between the first air guide plate 3 and the fan blade 1 is the second distance X2; where B1<B2<B3<A, X4<X3<X2<X1.

[0142] In some embodiments, the maximum speed of the fan blade is 1200 rpm, and the relationship between the fan blade speed and the volute tongue distance is as follows:

[0143] For speeds 600 ≤ R < 700 rpm, the fourth spacing is X4 = 3.1 mm;

[0144] Rotational speed 700 ≤ R < 850 rpm, third spacing X3 = 4.7 mm;

[0145] For a rotational speed of 850 ≤ R < 1000 rpm, the second spacing is X2 = 6.3 mm;

[0146] Rotational speed R≥1000rpm, first spacing X1=7.8mm.

[0147] In the air supply control method of this embodiment, the air supply control method includes:

[0148] When the air supply device is turned off, determine whether the first air guide plate 3 is in the initial position;

[0149] If the first air guide plate 3 is not in the initial position, control the first air guide plate 3 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.

[0150] Specifically, when the air supply device is turned off, the first air guide plate 3 is controlled to 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, so as to achieve rapid cooling of the air conditioner.

[0151] In the air supply control method of this embodiment, the method for controlling the movement of the first air guide plate 3 includes:

[0152] The motor 21 is controlled to rotate, 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 along the direction closer to or away from the fan blade 1, thereby reducing the distance between the first guide plate 3 and the fan blade 1 or increasing the distance between the first guide plate 3 and the fan blade 1.

[0153] Example 4

[0154] The variable baffle volute structure described in this embodiment consists of a volute body 2, a first guide plate 3, a second guide plate 5, a transmission mechanism 22, and a motor 21, forming a complete air supply device together with the fan blades 1 and the duct 71 of the cross-flow fan. Under normal conditions, the first guide plate 3 is stationary. Connecting rods 23 are provided on the first and second guide plates 3 and 5. Driven by the motor 21, the transmission mechanism 22 can push the connecting rods 23 of the first and second guide plates 3 and 5 forward, thereby shortening the gap between the volute and the fan blades 1.

[0155] When a consumer turns on the air conditioner and desires rapid cooling, the air supply device starts with high power consumption, rotating at high speed to achieve rapid airflow. At this time, the first air guide plate 3 and the second air guide plate 5 are in their initial positions, maintaining a certain first distance X1 between them and the fan blade 1. Figure 3 The initial position shown indicates a maximum gap of 7.8mm, preventing excessive wind speed, loud rotational noise, and airflow loss due to airflow impacting the volute tongue wall; it also controls the rotational noise of the duct at high power consumption speeds. After rapid cooling, the air conditioner enters a low-power stable state, and the fan blade 1 speed decreases. At this time, the volute tongue baffle is driven by the transmission mechanism 22 to rotate in the direction of fan blade 1, reducing the airflow guide distance between the volute tongue and fan blade 1. Figure 5 The diagram shows the first spacing X4, which is the minimum gap of 3.1mm. This reduces airflow loss and increases airflow in low-power mode. Two positioning points are set between the volute and the fan blade 1 at the maximum and minimum gaps, namely at the third spacing of 4.7mm and the second spacing of 6.3mm, corresponding to two different speed ranges. Taking the maximum fan blade speed of 1200rpm as a reference, the relationship between fan blade speed and volute spacing is as follows:

[0156] When the rotational speed R ≥ 1000 rpm, the clearance between the volute tongue and the fan blade X1 = 7.8 mm;

[0157] Rotational speed 850 ≤ R < 1000 rpm, clearance between volute tongue and fan blade X2 = 6.3 mm;

[0158] Rotational speed 700≤R<850rpm, clearance between volute tongue and fan blade X3=4.7mm;

[0159] Rotational speed 600≤R<700rpm, clearance between volute tongue and fan blade X4=3.1mm.

[0160] While the variable volute tongue baffle can flexibly adapt to the distance requirements of different fan speeds (high and low), splitting the volute tongue also introduces the problem of duct sealing. Therefore, the variable baffle is designed as an "L-shape," comprising a first guide plate 3 and a second guide plate 5. A sealing component 253, such as a sealing strip, is installed on the second guide plate 5 at its tail. A sealing groove 25 is designed on the side wall of the mating volute tongue body 2, forming a stop structure. When the first guide plate 3 is in a high-speed state, the tail of the second guide plate 5 cooperates with the sealing groove 25 to form a sealed duct space. When the first guide plate 3 is in a low-speed state, due to rotation and advancement, a gap appears between the tail of the second guide plate 5 and the inner wall of the sealing groove 25. At this time, the sealing component 253 contacts the inner wall of the sealing groove 25, forming a new sealed duct space. Figure 2 As shown.

[0161] To more accurately adjust the position of the first air guide plate 3 based on the airflow speed, a control element for measuring airflow speed is installed at the volute outlet. This element can also receive remote control signals. When the fan speed is below A m / s or the air conditioner receives a low-power operation remote control command, the signal starts the motor, driving the first air guide plate 3 to the corresponding low-speed position. When the air conditioner stops running, the first air guide plate 3 automatically resets to the default high-power position. The driving logic is as follows: Figure 12 As shown.

[0162] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0163] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0164] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0165] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0166] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air supply device, characterized in that, include: Wind blade (1), wherein the wind blade (1) is rotatably disposed; 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) near 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). The detection device (4) is used to detect the air supply speed at the air outlet (72) of the air supply device; A control device is connected to the detection device (4) by signal. The control device controls the first air guide plate (3) to move according to the air supply speed, so as to change the distance between the first air guide plate (3) and the fan blade (1); The cochlear tongue structure includes: A sealing groove (25) is recessed on the side wall of the volute 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 provided between the second air guide plate (5) and the first air guide plate (3). The sealing groove (25) includes a first connecting wall (251) and a second connecting wall (252) connected to each other, and a preset angle is provided between the first connecting wall (251) and the second connecting wall (252); wherein, When the first air guide plate (3) is in the initial position, the leeward side of the second air guide plate (5) is connected to the first connecting wall (251). When the first air guide plate (3) is in the active position, the second air guide plate (5) is spaced apart from the first connecting wall (251) and / or the second connecting wall (252).

2. The air supply device according to claim 1, characterized in that, The cochlear tongue structure includes: The motor (21) is disposed in the volute body (2); A transmission mechanism (22) is connected to the motor (21); A connecting rod (23) is provided, 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 along a direction close to or away from the fan blade (1) to drive the first air guide plate (3) to switch between an initial position and an active position connected to the volute tongue body (2). When the first air guide plate (3) is in 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 in 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.

3. The air supply device according to claim 2, characterized in that, The volute tongue body (2) includes a rotating shaft (24) located at the connection between the volute tongue body (2) and the first air guide plate (3). The rotating shaft (24) is rotatably 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) includes: A rocker arm (221) is mounted on the output shaft of the motor (21); A crankshaft (222) is provided, one end of which is connected to the rocker arm (221), and the other end of which is connected to the connecting rod (23).

5. The air supply device according to claim 1, characterized in that, The volute structure includes a sealing component (253) fixedly disposed on the second air guide plate (5). The sealing component (253) is located between the second air guide plate (5) and the inner wall of the sealing groove (25) to prevent the airflow from entering the volute body (2).

6. The air supply device according to claim 5, characterized in that, The sealing component (253) is fixedly disposed on the end face 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 in the movable position, the sealing component (253) abuts against the second connecting wall (252).

7. The air supply device according to claim 1, characterized in that, The first air guide plate (3) is provided with a flow diversion structure (6) on the side near the fan blade (1). The flow diversion structure (6) includes a plurality of flow diversion channels spaced apart along the extension direction of the first air guide plate (3). The flow diversion channels are used to divert the airflow between the first air guide plate (3) and the fan blade (1).

8. The air supply device according to claim 1, characterized in that, The air supply device includes a volute structure (7), the volute structure (7) and the volute tongue structure form an air supply housing, 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 fan blade (1) is provided in the air duct (71).

9. An air conditioner, characterized in that, The air conditioner includes the air supply device as described in any one of claims 1 to 8.

10. An air supply control method, characterized in that, The air supply control method is applicable to the air supply device as described in any one of claims 1 to 8, and the air supply control method includes: Detect the air supply speed at the air outlet (72) of the air supply device; The first air guide plate (3) is controlled to move according to the air supply speed, so as to change the distance between the first air guide plate (3) and the fan blade (1).

11. The air supply control method according to claim 10, characterized in that, The control of the first air guide plate (3) according to the air supply speed includes: The air supply status of the air supply device is determined based on the air supply speed. The first air guide plate (3) is controlled to move according to the air supply status and / or air supply speed.

12. The air supply control method according to claim 11, characterized in that, The step of determining the air delivery status of the air delivery device based on the air delivery speed includes: If the air supply speed R ≥ A rpm, then the air supply device is in a high air speed state; The control of the first air guide plate (3) based on the air supply status and / or air supply speed is specifically as follows: If the air supply device is in a high wind speed state, the first air guide plate (3) is controlled 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.

13. The air supply control method according to claim 12, characterized in that, The step of determining the air delivery status of the air delivery device based on the air delivery speed includes: If the air supply speed R < Arpm, then the air supply device is in a low air speed state; The control of the first air guide plate (3) based on the air supply status and / or air supply speed is specifically as follows: 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.

14. The air supply control method according to claim 13, 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, including: If the air delivery speed satisfies B1≤R<B2rpm, then control the first air guide plate (3) 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 delivery speed satisfies B2≤R<B3rpm, then control the first air guide plate (3) 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, then control the first air guide plate (3) to move so that the distance between the first air guide plate (3) and the fan blade (1) is the second distance X2; where B1<B2<B3<A, X4<X3<X2<X1.

15. The air supply control method according to claim 14, characterized in that, The air supply control method includes: When the air supply device is turned off, determine 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, control the first air guide plate (3) 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.

16. The air supply control method according to claim 10, characterized in that, The methods for controlling the movement of the first air guide plate (3) include: The control motor (21) rotates, and the output shaft of the motor (21) drives the swing arm (221) to rotate. The crankshaft (222) is driven by the swing arm (221) to push the connecting rod (23) to move along the direction close to 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).

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