Air duct assembly and air conditioner

Abstract

The air duct assembly comprises a machine body, a fan and a volute tongue, the machine body is provided with an air duct, the fan is arranged in the air duct, the volute tongue is rotatably arranged on the machine body so as to adjust the distance between the volute tongue and the fan, and a matching part is arranged on the machine body corresponding to the volute tongue. An arc fit clearance is formed between the fit part and the surface of one side, deviating from the fan, of the volute tongue; the volute tongue can keep low air outlet noise when the air conditioner is in different wind gears, meanwhile, it is guaranteed that the volute tongue and the air outlet end keep a good sealing effect in the rotating process, and abnormal noise caused by outlet air backflow is prevented.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air duct assembly and an air conditioner. Background Technology

[0002] In air conditioners, the air outlet duct of the indoor unit is generally a duct. The duct is mainly formed by the duct wall and the fan. A volute is set at the air outlet of the duct to ensure that the airflow flows out of the duct smoothly. Because there is a fixed gap between the volute and the fan blades, the volute can easily cause different degrees of airflow backflow and wall vortex at different air outlet speeds. This can result in the air conditioner being noisier at certain fan speeds, affecting the user experience. Utility Model Content

[0003] The main objective of this utility model embodiment is to provide a duct assembly and an air conditioner, which aims to improve the technical problem of excessive noise in air conditioners under certain wind deflectors in the prior art.

[0004] An embodiment of this utility model provides an air duct assembly, comprising:

[0005] The body has air ducts;

[0006] A fan is installed inside the air duct;

[0007] A volute tongue is rotatably mounted on the body to adjust the distance between the volute tongue and the fan;

[0008] A mating part is provided on the body corresponding to the volute tongue, and an arc-shaped mating gap is formed between the mating part and the surface of the volute tongue facing away from the fan.

[0009] In some embodiments of this utility model, the volute tongue has a first arc-shaped portion on the side opposite to the fan, and the first arc-shaped portion and the mating portion form the arc-shaped mating gap.

[0010] In some embodiments of this utility model, the length of the first arc-shaped portion is less than the length of the mating portion.

[0011] In some embodiments of this utility model, the center of the first arc-shaped portion coincides with the center of the mating portion, and also coincides with the rotation center of the volute tongue.

[0012] In some embodiments of this utility model, the width of the arc fitting gap is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0013] In some embodiments of this utility model, the air duct assembly further includes a drive shaft, which passes through the volute tongue along the axial direction of the fan and is connected to the volute tongue, for driving the volute tongue to reciprocate between a first position and a second position, wherein the second position is located between the edge of the fan and the first position;

[0014] The mating part engages with the volute tongue to form the arc-shaped mating gap whenever the volute tongue is in any position between the first position and the second position.

[0015] In some embodiments of this utility model, the connection position between the drive shaft and the volute tongue is close to the bottom of the air duct.

[0016] In some embodiments of this utility model, the thickness of the mating portion gradually decreases from the end of the mating portion away from the volute tongue to the end of the mating portion close to the volute tongue.

[0017] In some embodiments of this utility model, an air conditioner is also provided, which includes the above-described air duct assembly.

[0018] In some embodiments of this utility model, the air conditioner further includes a controller and a volume sensor. The volume sensor is disposed at the air outlet of the air conditioner and is used to collect noise data from the air outlet. The controller is used to control the volute to rotate to a suitable position based on the noise data so that the noise at the air outlet is minimized.

[0019] This utility model provides an air duct assembly and an air conditioner. The air duct assembly has a rotatable volute tongue on the body, which allows the volute tongue to adjust the distance between itself and the fan at any time. This ensures that the volute tongue maintains a low air outlet noise when the air conditioner is set to different fan speeds. At the same time, the volute tongue forms an arc-shaped gap with the mating part of the body during rotation, ensuring a good sealing effect between the volute tongue and the air outlet during rotation and preventing backflow of air from causing abnormal noise. Attached Figure Description

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the internal structure of an air duct assembly according to an embodiment of the present invention;

[0022] Figure 2This is a schematic diagram of the arc-shaped fitting clearance when the volute tongue is in the first position according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the arc-shaped fitting clearance when the volute tongue is in the second position according to an embodiment of the present invention.

[0024] Reference numerals: 100, body; 110, air duct; 111, evaporator; 112, middle frame; 200, fan; 300, volute; 310, drive shaft; 301, first arc-shaped part; 400, mating part; 500, arc-shaped mating clearance. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figures 1-3 As shown, this utility model provides an air duct assembly, which includes a body 100, a fan 200, and a volute 300. The body 100 has an air duct 110. The fan 200 is disposed within the air duct 110. The volute 300 is rotatably disposed on the body 100, and the volute 300 is configured to adapt to the airflow noise of the air conditioner to adjust the distance between the volute 300 and the fan 200. A mating part 400 is provided on the body 100 corresponding to the volute 300, and an arc-shaped mating gap 500 is formed between the mating part 400 and the surface of the volute 300 facing away from the fan 200.

[0030] The air duct 110 of the body 100 is formed by the enclosure of the evaporator 111 and the middle frame 112 in the body 100.

[0031] The volute tongue 300 is located at the air outlet of the air duct 110, that is, between the fan 200 and the air outlet. Its rotation is around its axis. The above-mentioned adaptive rotation based on air noise means that the volute tongue 300 can be adjusted to the position with the least air noise under the windshield according to the air noise level of the volute tongue 300 at different positions.

[0032] The mating part 400 is also located at the air outlet end of the air duct 110 and is part of the structure of the middle frame 112. It is used to wrap the side of the volute tongue 300 near the air outlet and form an arc-shaped mating gap 500. That is, the side wall of the middle frame 112 near the fan forms the side wall of the air duct 110.

[0033] Understandably, this duct assembly incorporates a volute 300 at the air outlet of the duct 110 that can adapt to varying airflow noise levels. This allows the volute 300 to adjust the distance between itself and the fan 200 at any time, ensuring that the volute 300 maintains a low airflow noise level regardless of the air conditioner's fan speed. Furthermore, the volute 300, during rotation, continuously engages with the air outlet of the duct 110 to form an arc-shaped gap 500, ensuring a good seal between the volute 300 and the air outlet during rotation and preventing backflow that could cause noise.

[0034] In some embodiments, the volute tongue 300 has a first arc-shaped portion 301 on the side opposite to the fan 200, and the first arc-shaped portion 301 and the mating portion 400 form an arc-shaped mating gap 500. That is, the mating portion 400 also has an arc-shaped mating structure on the side near the volute tongue 300 so that the first arc-shaped portion 301 and the mating portion 400 can fit together to form an arc-shaped mating gap 500. It can be understood that by adopting an arc-shaped mating structure, the volute tongue 300 can form an arc-shaped mating gap 500 with the mating portion 400 during rotation.

[0035] In some embodiments, the length of the first arc-shaped portion 301 is less than the length of the mating portion 400. It is understood that when the first arc-shaped portion 301 is arc-shaped and the mating portion 400 also has an arc-shaped mating structure, making the length of the arc-shaped mating structure of the mating portion 400 greater than the length of the first arc-shaped portion 301 allows the first arc-shaped portion 301 to mate with the mating portion 400 to form an arc-shaped mating gap 500 at any position.

[0036] In some embodiments, the center of the first arc-shaped portion 301 coincides with the center of the mating portion 400, and also coincides with the rotation center of the volute tongue 300. That is, the arc-shaped mating structure of the mating portion 400, the coincidence of the center of the first arc-shaped portion 301, and the coincidence of the rotation center of the volute tongue 300 can keep the distance between the first arc-shaped portion 301 and the mating portion 400 constant, so that the arc-shaped mating gap 500 formed by the first arc-shaped portion 301 and the mating portion 400 at any position has the same width, and the arc-shaped mating gap 500 formed by the mating portion 400 and the first arc-shaped portion 301 has the same width at all points.

[0037] In some embodiments, the width of the arc-shaped mating clearance 500 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm. It is understood that if the arc-shaped mating clearance 500 is too wide, it may result in poor sealing performance; if it is too narrow, it may cause friction between the volute tongue 300 and the mating part 400. Therefore, the width of the arc-shaped mating clearance 500 is limited to between 0.3 mm and 0.5 mm.

[0038] Specifically, the width of the arc fit clearance 500 is 0.3mm.

[0039] Specifically, the width of the arc fit clearance 500 is 0.4mm.

[0040] Specifically, the width of the arc fit clearance 500 is 0.5mm.

[0041] In some embodiments, the length of the arc-shaped mating gap 500 is 5mm-10mm. If the arc-shaped mating gap 500 is too long, it may cause the volute tongue 300 to interfere with the mating part 400 during rotation. If the arc-shaped mating gap 500 is too short, it may cause poor sealing effect. Therefore, the width of the arc-shaped mating gap 500 is limited to between 5mm and 10mm.

[0042] Specifically, the length of the first arc-shaped portion 301 is 5 mm.

[0043] Or, more specifically, the length of the first arc-shaped portion 301 is 8 mm.

[0044] Or, more specifically, the length of the first arc-shaped portion 301 is 10 mm.

[0045] In some embodiments, the air duct assembly further includes a drive shaft 310, which passes through and is connected to the volute 300 along the axial direction of the fan 200. The drive shaft 310 is used to drive the volute 300 to rotate between a first position and a second position, the second position being located between the fan edge and the first position. The mating part 400 engages with the volute 300 to form an arc-shaped mating gap 500 when the volute 300 is in any position between the first and second positions.

[0046] That is, the volute tongue 300 is not capable of 360° rotation, but is restricted to rotating between the first and second positions. This is to prevent excessive rotation of the volute tongue 300 from interfering with other parts of the body 100. Specifically, as the volute tongue 300 rotates from the first position to the second position, the gap between the volute tongue 300 and the fan gradually decreases.

[0047] In some embodiments, the connection point between the drive shaft 310 and the volute tongue 300 is near the bottom of the air duct 110.

[0048] In some embodiments, the thickness of the mating portion 400 gradually decreases from the end of the mating portion 400 away from the volute tongue 300 to the end of the mating portion 400 closer to the volute tongue 300.

[0049] It is understandable that by gradually reducing the thickness of the mating part 400 from the end away from the volute tongue 300 to the end closer to the volute tongue 300, the air resistance of the mating part 400 to the air outlet is reduced, making the air outlet flow more smoothly.

[0050] In some embodiments, an air conditioner is also provided, which includes the aforementioned air duct assembly. Since the air conditioner includes at least some or all of the embodiments of the aforementioned air duct assembly, the air conditioner has at least the beneficial effects of some or all of the aforementioned embodiments, which will not be elaborated further here.

[0051] In some embodiments, the air conditioner further includes a controller and a volume sensor. The volume sensor is located at the air outlet of the air conditioner and is used to collect noise data from the air outlet. The controller is used to control the volute tongue 300 to rotate to a suitable position based on the noise data so that the noise at the air outlet is minimized.

[0052] In this process, after the air outlet baffle of the air conditioner is determined, the controller controls the volute 300 to rotate multiple times from the first position to the second position at a preset rotation angle, and obtains the noise intensity of the air outlet after each rotation. After rotating to the second position, the controller obtains the position of the volute 300 with the lowest noise intensity and rotates the volute 300 to that position.

[0053] The preset rotation angle is 0.5°.

[0054] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made based on the contents of the present utility model specification and drawings under the application concept of the present utility model, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A duct assembly, characterized in that, include: The body has air ducts; A fan is installed inside the air duct; The volute tongue is rotatably mounted on the machine body to adjust the distance between the volute tongue and the fan; A mating part is provided on the body corresponding to the volute tongue, and an arc-shaped mating gap is formed between the mating part and the surface of the volute tongue facing away from the fan.

2. The air duct assembly according to claim 1, characterized in that, The volute tongue has a first arc-shaped portion on the side opposite to the fan, and the first arc-shaped portion and the mating portion form the arc-shaped mating gap.

3. The air duct assembly according to claim 2, characterized in that, The length of the first arc-shaped portion is less than the length of the mating portion.

4. The air duct assembly according to claim 2, characterized in that, The center of the first arc-shaped part coincides with the center of the mating part, and also coincides with the rotation center of the volute tongue.

5. The air duct assembly according to claim 1, characterized in that, The width of the arc-shaped fitting gap is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

6. The air duct assembly according to claim 1, characterized in that, The air duct assembly also includes a drive shaft that passes through and is connected to the volute along the axial direction of the fan, for driving the volute to reciprocate between a first position and a second position, wherein the second position is located between the edge of the fan and the first position; The mating part engages with the volute tongue to form the arc-shaped mating gap whenever the volute tongue is in any position between the first position and the second position.

7. The air duct assembly according to claim 6, characterized in that, The connection point between the drive shaft and the volute tongue is near the bottom of the air duct.

8. The air duct assembly according to claim 1, characterized in that, The rear end of the mating portion gradually decreases in size from the end furthest from the worm tongue to the end closest to the worm tongue.

9. An air conditioner, characterized in that, Includes the air duct assembly as described in any one of claims 1-8.

10. The air conditioner according to claim 9, characterized in that, The air conditioner also includes a controller and a volume sensor. The volume sensor is located at the air outlet of the air conditioner and is used to collect noise data from the air outlet. The controller is used to control the volute to rotate to a suitable position based on the noise data so that the noise at the air outlet is minimized.

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