Air conditioner indoor unit and air conditioner

Abstract

The utility model discloses an air conditioner indoor unit and an air conditioner, and relates to the technical field of air conditioners, the air conditioner indoor unit comprises a shell, a fan and a volute tongue, the shell is provided with a wind wheel installation cavity, and an air inlet and an air outlet which are respectively communicated with the wind wheel installation cavity; a wind wheel of the draught fan is arranged in the wind wheel installation cavity, and indoor air is guided into the wind wheel installation cavity from the air inlet through operation of the wind wheel and then guided back into a room from the air outlet. The volute tongue comprises a first air guide section and a second air guide section which are connected in a bent mode, the first air guide section extends in the direction of the air outlet, the second air guide section extends in the circumferential direction of the wind wheel, a step is arranged on the side, away from the first air guide section, of the second air guide section and extends in the direction away from the wind wheel, and a noise reduction convex edge is arranged on the side, away from the wind wheel, of the step. And a plurality of noise reduction openings are formed in the noise reduction convex edge and are distributed at intervals in the length direction of the step. According to the technical scheme, the noise of the air conditioner indoor unit can be reduced.

Description

Technical Field

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

[0002] As people's living standards continue to improve, their demands for material goods are also increasing; for necessities like air conditioners, people have higher requirements for their appearance and quality. Noise, as an important indicator of customer experience during air conditioner operation, is also receiving increasing attention. Research has found that the volute tongue has a significant impact on the noise generation of the indoor unit of an air conditioner.

[0003] The current volute structure on the market is poorly designed, which causes the recirculating airflow to easily interfere with the airflow at the air inlet of the indoor unit of the air conditioner, resulting in resonance and abnormal noise. Utility Model Content

[0004] The main purpose of this utility model is to propose an indoor air conditioning unit and an air conditioner, which aims to reduce the noise of the indoor air conditioning unit.

[0005] To achieve the above objectives, the present invention provides an indoor air conditioning unit comprising:

[0006] The housing has a wind turbine mounting cavity and an air inlet and an air outlet respectively communicating with the wind turbine mounting cavity;

[0007] A fan, wherein the fan impeller is disposed within the impeller mounting cavity, and through the rotation of the impeller, indoor air is guided from the air inlet into the impeller mounting cavity, and then guided back into the room from the air outlet; and

[0008] The volute tongue includes a first air guide section and a second air guide section that are bent and connected. The first air guide section extends toward the air outlet, and the second air guide section extends around the circumference of the impeller. A step is provided on the side of the second air guide section away from the first air guide section. The step extends away from the impeller. A noise reduction protrusion is provided on the side of the step away from the impeller, and a plurality of noise reduction ports are provided on the noise reduction protrusion. The plurality of noise reduction ports are spaced apart along the length direction of the step.

[0009] In one embodiment, the noise reduction convex edge includes multiple noise reduction segments of different heights.

[0010] In one embodiment, the heights of the multiple noise reduction segments are progressively increased along the length of the step.

[0011] In one embodiment, the noise reduction port is located in the noise reduction segment with the highest height among the multiple noise reduction segments.

[0012] In one embodiment, the wind turbine extends vertically along its axis, and among the multiple noise reduction sections, the highest noise reduction section is located in the lower middle part of the step.

[0013] In one embodiment, the fan further includes a drive component for driving the impeller. Among the multiple noise reduction sections, the highest noise reduction section is located close to the drive component. When the indoor unit of the air conditioner is installed, the drive component is located below the impeller mounting cavity.

[0014] In one embodiment, the noise reduction port is provided as a notch.

[0015] In one embodiment, the opening width of the noise reduction port is L1, the distance between two adjacent noise reduction ports is L2, and the depth of the noise reduction port is L3, satisfying: L3 < L1, L3 < L2, L2 ≤ L1.

[0016] In one embodiment, the noise reduction port is at least one of V-shape, U-shape, and rectangle.

[0017] In one embodiment, the indoor unit of the air conditioner has a first direction perpendicular to the ejection direction of the impeller mounting cavity, and an auxiliary surface passing through the center of the impeller is formed in the first direction, with the step located on the side of the auxiliary surface away from the air outlet.

[0018] This utility model also proposes an air conditioner, including the above-mentioned indoor air conditioner unit.

[0019] The technical solution of this utility model extends the first air guide section towards the air outlet, while the second air guide section extends around the circumference of the impeller. A step is set on the side of the second air guide section away from the first air guide section, and a noise-reducing protrusion with multiple noise-reducing openings is set on the side of the step away from the impeller. Specifically, the first air guide section can guide the airflow generated by the rotation of the impeller to the air outlet, so that the air outlet of the indoor unit of the air conditioner is smoother and the air outlet effect is better. The second air guide section can guide part of the airflow of the impeller back to the impeller. It can be understood that when the return airflow passes through the noise-reducing protrusion and the noise-reducing openings, the noise-reducing protrusion and the noise-reducing openings can act on the return airflow, change the direction of the return airflow, and create a phase difference in the wind speed of the return airflow. This makes it less likely for airflow resonance to occur between the return airflow and the intake airflow, thereby effectively reducing the noise generated by airflow resonance and optimizing the abnormal noise of the air duct of the indoor unit of the air conditioner. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A cross-sectional structural schematic diagram of an embodiment of an air conditioner indoor unit provided by this utility model;

[0022] Figure 2 for Figure 1 A structural diagram of part of the provided air conditioner indoor unit;

[0023] Figure 3 for Figure 2 A structural schematic diagram of part of the structure of the provided air conditioner indoor unit from a first-person perspective;

[0024] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 for Figure 2 A partial schematic diagram of the structure of the air conditioner indoor unit from a second perspective;

[0026] Figure 6 A schematic diagram of the structure of the first embodiment of the noise reduction port on the volute of the air conditioner indoor unit provided by this utility model;

[0027] Figure 7 A schematic diagram of the second embodiment of the noise reduction port on the volute of the air conditioner indoor unit provided by this utility model;

[0028] Figure 8 This is a structural schematic diagram of the third embodiment of the noise reduction port on the volute of the air conditioner indoor unit provided by this utility model.

[0029] Explanation of icon numbers:

[0030] 10. Indoor unit of air conditioner; 100. Housing; 110. Fan wheel mounting cavity; 120. Air inlet; 130. Air outlet; 210. Fan wheel; 220. Drive component; 300. Volute; 310. First air guide section; 320. Second air guide section; 321. Step; 322. Noise reduction protrusion; 322a. Noise reduction section; 323. Noise reduction port; 400. Auxiliary surface.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] 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 scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] 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 use of "and / or" or "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.

[0035] As people's living standards continue to improve, their demands for material goods are also increasing; for necessities like air conditioners, people have higher requirements for their appearance and quality. Noise, as an important indicator of customer experience during air conditioner operation, is also receiving increasing attention. Research has found that the volute tongue has a significant impact on the noise generation of the indoor unit of an air conditioner.

[0036] The current volute structure on the market is poorly designed, which causes the recirculating airflow to easily interfere with the airflow at the air inlet of the indoor unit of the air conditioner, resulting in resonance and abnormal noise.

[0037] To solve the above-mentioned technical problems, this utility model proposes an air conditioner indoor unit 10.

[0038] Please see Figures 1 to 4In one embodiment of this utility model, the indoor unit 10 of the air conditioner includes a housing 100, a fan, and a volute 300. The housing 100 is provided with a fan wheel mounting cavity 110, and an air inlet 120 and an air outlet 130 respectively communicating with the fan wheel mounting cavity 110. The fan wheel 210 is disposed in the fan wheel mounting cavity 110. Through the operation of the fan wheel 210, indoor air is guided from the air inlet 120 to the fan wheel mounting cavity 110, and then guided back into the room from the air outlet 130. The volute 300 includes a first air guide section that is bent and connected. The first air guide section 310 extends toward the air outlet 130, and the second air guide section 320 extends around the circumference of the impeller 210. A step 321 is provided on the side of the second air guide section 320 away from the first air guide section 310. The step 321 extends away from the impeller 210. A noise reduction protrusion 322 is provided on the side of the step 321 away from the impeller 210, and multiple noise reduction ports 323 are provided on the noise reduction protrusion 322. The multiple noise reduction ports 323 are arranged at intervals along the length direction of the step 321.

[0039] The technical solution of this utility model extends the first air guide section 310 toward the air outlet 130, while the second air guide section 320 extends circumferentially around the impeller 210. A step 321 is provided on the side of the second air guide section 320 away from the first air guide section 310, and a noise-reducing protrusion 322 with multiple noise-reducing openings 323 is provided on the side of the step 321 away from the impeller 210. Specifically, the first air guide section 310 can guide the airflow generated by the rotation of the impeller 210 to the air outlet 130, so that the air outlet of the indoor unit of the air conditioner is smoother. The second air guide section 320 can guide part of the airflow from the impeller 210 back to the impeller 210. This means that when the returning airflow passes through the noise-reducing protrusion 322 and noise-reducing port 323, these elements act on the returning airflow, changing its direction and creating a phase difference in wind speed. This reduces the likelihood of airflow resonance between the returning and incoming airflows, effectively minimizing noise generated by airflow resonance and optimizing the duct noise of the indoor unit 10. This is especially beneficial for reducing duct noise at low speeds or low airflow rates.

[0040] Furthermore, since this design includes a step 321 on the side of the second air guide section 320 away from the first air guide section 310, and a noise-reducing protrusion 322 on the side of the step 321 away from the impeller 210, it can be understood that the design of the step 321 structure can improve the bending or compressive strength of this area, thereby enhancing local strength and making the volute tongue 300 less prone to deformation. Secondly, since the volute tongue 300 structure is generally a one-piece injection molded part, adding the noise-reducing protrusion 322 and the step 321 will not increase costs.

[0041] It should be noted that a heat exchanger is also provided inside the casing 100. The heat exchanger is located between the impeller mounting cavity 110 and the air inlet 120. Through the operation of the impeller 210, indoor air is guided from the air inlet 120 into the casing 100, and after heat exchange by the heat exchanger, it is guided back into the room from the air outlet 130. In this way, the indoor unit of the air conditioner can introduce indoor air into the casing 100 through the air inlet 120, and after heat exchange with the heat exchanger to form a heat exchange airflow, it can flow into the room through the air outlet 130 as the fan rotates, thereby cooling or heating the room.

[0042] Optionally, in this embodiment, the noise reduction protrusion 322 includes multiple noise reduction segments 322a of different heights. This is beneficial to further generate a phase difference in wind speed in the return airflow, so that airflow resonance is less likely to occur between the return airflow and the intake airflow, thereby further and effectively reducing the noise generated by airflow resonance and optimizing the abnormal noise of the air duct of the indoor unit 10 of the air conditioner.

[0043] Furthermore, in this embodiment, multiple noise reduction segments 322a of different heights are sequentially connected and arranged along the length of the step 321. Of course, this solution is not limited to this; in other embodiments, multiple noise reduction segments 322a of different heights can also be sequentially and spaced along the length of the step 321.

[0044] Optionally, the heights of the multiple noise-reducing segments 322a can be progressively increased along the length of the step 321. This not only reduces noise generated by airflow resonance and optimizes the duct noise of the indoor unit 10, but also enhances the aesthetics of the volute tongue 300. Of course, this solution is not limited to this. In other embodiments, the multiple noise-reducing segments 322a may not be arranged in a progressively increasing manner along the length of the step 321. For example, but not limited to, the heights of the multiple noise-reducing segments 322a can be randomly distributed along the length of the step 321, or the heights of the multiple noise-reducing segments 322a can decrease from both ends towards the middle along the length of the step 321.

[0045] In this embodiment, to further reduce airflow resonance noise, the noise reduction port 323 is located in the highest noise reduction segment 322a among the multiple noise reduction segments 322a. However, this embodiment is not limited to this; in the second embodiment, multiple noise reduction ports 323 can be provided on each noise reduction segment 322a. Furthermore, this embodiment is not limited to this; in the third embodiment, multiple noise reduction ports 323 can be provided on some of the noise reduction segments 322a.

[0046] Furthermore, the impeller 210 extends vertically, and among the multiple noise reduction sections 322a, the tallest noise reduction section 322a is located in the lower middle part of the step 321. It can be understood that when the indoor unit 10 is installed, the impeller mounting cavity 110 is a vertically extending mounting cavity, meaning the impeller 210 extends vertically. This makes the airflow velocity difference between the upper and lower parts of the air outlet 130 more even, thereby optimizing the duct noise of the indoor unit 10. Of course, this solution is not limited to this. In the second embodiment, the impeller 210 extends vertically, and among the multiple noise reduction sections 322a, the tallest noise reduction section 322a can also be located in the upper part of the step 321.

[0047] Furthermore, the fan also includes a drive component 220 for driving the impeller 210. Among the multiple noise reduction sections 322a, the tallest noise reduction section 322a is positioned close to the drive component 220. In the installed state, the drive component 220 is located below the impeller mounting cavity 110. It can be understood that in the installed state, the impeller mounting cavity 110 is a vertically extending mounting cavity, that is, the axis of the impeller 210 extends vertically. This can further make the difference in air velocity between the upper and lower parts of the air outlet 130 more uniform, thereby optimizing the duct noise of the air conditioner indoor unit 10. Of course, this solution is not limited to this. In the second embodiment, the tallest noise reduction section 322a can also be positioned away from the drive component 220.

[0048] In this embodiment, the driving component 220 is configured as a motor. Of course, in other embodiments, it can also be configured as other driving devices, as long as they can drive the wind turbine 210 to rotate.

[0049] Optionally, in this embodiment, in order to further generate a phase difference in wind speed in the return airflow, making it less likely for airflow resonance to occur between the return airflow and the intake airflow, and effectively reducing the noise generated by airflow resonance, this solution sets the noise reduction port 323 as a notch. Of course, this solution is not limited to this; in the second embodiment, the noise reduction port 323 can also be set as a noise reduction hole.

[0050] Reference Figures 5 to 8 Furthermore, the noise reduction port 323 is set in the form of a notch, the opening width of the noise reduction port 323 is L1, the distance between two adjacent noise reduction ports 323 is L2, and the depth of the noise reduction port 323 is L3, satisfying: L3<L1, L3<L2, L2≤L1; this can optimize the abnormal noise of the air duct in the windless state.

[0051] Furthermore, the noise reduction opening 323 is a notch, and the noise reduction opening 323 is at least one of V-shape, U-shape, and rectangle; specifically, in one embodiment, the noise reduction opening 323 is V-shaped. In a second embodiment, the noise reduction opening 323 is U-shaped. In a third embodiment, the noise reduction opening 323 is rectangular. In a fourth embodiment, the noise reduction opening 323 may also be irregular in shape, for example, but not limited to, the bottom wall of the noise reduction notch is wavy or inverted V-shaped. In a fifth embodiment, the noise reduction opening 323 on the noise reduction protrusion 322 is of two shapes, for example, but not limited to, V-shape and U-shape or V-shape and rectangle; the specific shape of the noise reduction opening 323 is not limited here.

[0052] Reference Figure 2 Optionally, the indoor unit 10 of the air conditioner has a first direction perpendicular to the demolding direction of the impeller mounting cavity 110, and an auxiliary surface 400 passing through the center of the impeller 210 is made in the first direction. The step 321 is located on the side of the auxiliary surface 400 away from the air outlet 130. This can better guide the return airflow and further generate a phase difference in wind speed in the return airflow, so that airflow resonance is less likely to occur between the return airflow and the intake airflow, effectively reducing the noise generated by airflow resonance.

[0053] This utility model also proposes an air conditioner, which includes an indoor unit. The specific structure of the indoor unit is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

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

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing has a wind turbine mounting cavity and an air inlet and an air outlet respectively communicating with the wind turbine mounting cavity; A fan, wherein the impeller of the fan is disposed in the impeller mounting cavity, and through the rotation of the impeller, indoor air is guided from the air inlet to the impeller mounting cavity, and then guided back into the room from the air outlet; as well as The volute tongue includes a first air guide section and a second air guide section that are bent and connected. The first air guide section extends toward the air outlet, and the second air guide section extends around the circumference of the impeller. A step is provided on the side of the second air guide section away from the first air guide section. The step extends away from the impeller. A noise reduction protrusion is provided on the side of the step away from the impeller, and a plurality of noise reduction ports are provided on the noise reduction protrusion. The plurality of noise reduction ports are spaced apart along the length direction of the step.

2. The air conditioning indoor unit as claimed in claim 1, wherein, The noise reduction convex edge includes multiple noise reduction segments of different heights.

3. The air conditioning indoor unit as claimed in claim 2, wherein Along the length of the step, the heights of the multiple noise reduction sections are arranged in an increasing manner.

4. The air conditioning indoor unit as claimed in claim 3, wherein The noise reduction port is located in the noise reduction section with the highest height among the multiple noise reduction sections.

5. The air conditioning indoor unit as claimed in claim 4, wherein The wind turbine extends vertically along its axis, and among the multiple noise reduction sections, the highest noise reduction section is located in the lower middle part of the step. 6.The indoor unit of the air conditioner of claim 3, wherein, The fan also includes a drive component for driving the impeller. Among the multiple noise reduction sections, the highest noise reduction section is located close to the drive component. When the indoor unit of the air conditioner is installed, the drive component is located below the impeller mounting cavity.

7. The air conditioner indoor unit according to any one of claims 1 to 6, characterized by The noise reduction port is provided in the form of a notch. 8.The indoor unit of the air conditioner of claim 7, wherein, The opening width of the noise reduction port is L1, the distance between two adjacent noise reduction ports is L2, and the depth of the noise reduction port is L3, satisfying: L3 < L1, L3 < L2, L2 ≤ L1. 9.The indoor unit of the air conditioner of claim 7, wherein, The noise reduction port is in the shape of at least one of V-shape, U-shape, and rectangle.

10. The air conditioner indoor unit as described in claim 1, characterized in that, The indoor unit of the air conditioner has a first direction perpendicular to the ejection direction of the impeller mounting cavity, and an auxiliary surface passing through the center of the impeller is made in the first direction. The step is located on the side of the auxiliary surface away from the air outlet.

11. An air conditioner characterized by comprising: Including the air conditioning indoor unit as described in any one of claims 1 to 10.

Images