Vertical air conditioner indoor unit

Abstract

The utility model discloses an indoor unit of a vertical air conditioner, which belongs to the technical field of air conditioners and comprises a shell, a heat exchanger, a centrifugal fan, a volute and a volute tongue. The heat exchanger is arranged in the machine shell and close to the top of the machine shell. The centrifugal fan is arranged in the machine shell and located below the heat exchanger. The volute is arranged in the machine shell and is close to the bottom of the machine shell. The centrifugal fan is arranged in the volute; the volute comprises a volute air inlet and a volute air outlet, the volute air inlet faces the front side of the machine shell, and the volute air outlet faces the top of the machine shell. The flow guide ring is connected to the volute, is arranged at the air inlet of the volute and is positioned outside the volute; the blocking part is arranged on the windward side of the flow guide ring, located at the air inlet of the volute and used for breaking or scattering airflow passing through the blocking part. According to the vertical air conditioner indoor unit, the blocking part is arranged on the windward side of the flow guide ring, the blocking part is used for scattering airflow along the airflow flowing path to cause sound energy loss, and then the noise reduction effect is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and in particular to a vertical air conditioning indoor unit. Background Art

[0002] The centrifugal fan is an important part of the indoor unit of the air conditioner, and the volute is the part where the centrifugal fan is installed. At present, a guide ring is usually set at the air inlet of the volute. The main function of the guide ring is to guide the airflow into the volute and ensure that the airflow is evenly distributed, thereby optimizing the performance of the fan. It can be seen that the guide ring also has a significant impact on the noise of the air conditioner, but if the guide ring is not designed properly, it may cause a series of noise-related problems.

[0003] The shape and size of the guide ring have a direct impact on the stability and uniformity of the airflow. If the shape or size of the guide ring is unreasonable, it may cause eddy currents, turbulence or uneven distribution of the airflow when it enters the volute. These unstable airflow phenomena will stimulate pressure fluctuations and velocity fluctuations, which will generate noise.

[0004] In the prior art, the guide ring cannot adapt well to different airflow conditions and noise reduction requirements, and the structure of the guide ring still needs to be further optimized and improved to improve the noise reduction performance and usage comfort of the air conditioner. Utility Model Content

[0005] In response to the shortcomings in the relevant technologies, the present application provides a vertical air-conditioning indoor unit, which provides a blocking portion on the windward surface of the guide ring, and arranges the blocking portion along a trajectory corresponding to the airflow path, so that the blocking portion "breaks up" the airflow along the airflow path to cause sound energy loss, thereby achieving a noise reduction effect.

[0006] The present application provides a vertical air conditioner indoor unit, comprising:

[0007] The casing comprises a casing air outlet and a casing air inlet, wherein the casing air outlet and the casing air inlet are respectively arranged at the front side of the casing, the casing air outlet is arranged near the top of the casing, and the casing air inlet is arranged near the bottom of the casing;

[0008] A heat exchanger is disposed in the casing, the heat exchanger is disposed near the top of the casing, and is used to exchange heat with the air passing through the heat exchanger;

[0009] The centrifugal fan is arranged in the casing and is located below the heat exchanger. The centrifugal fan is operated to introduce indoor air into the casing from the casing air inlet, and after the indoor air is in contact with the heat exchanger for heat exchange, it is output to the indoor through the casing air outlet.

[0010] The volute is arranged in the casing; the volute is arranged near the bottom of the casing; the centrifugal fan is arranged inside the volute; the volute includes a volute air inlet and a volute air outlet, the volute air inlet is arranged toward the front side of the casing, and the volute air outlet is arranged toward the top of the casing;

[0011] A guide ring is connected to the volute and is arranged at the air inlet of the volute;

[0012] The blocking part is arranged on the windward side of the guide ring. The blocking part is located at the air inlet of the volute and is used to interrupt or disperse the airflow passing through it.

[0013] This technical solution achieves a noise reduction effect by arranging a blocking portion on the windward surface of the guide ring, and utilizing the blocking portion to "break up" the airflow along the airflow path to cause sound energy loss.

[0014] In some embodiments, a plurality of blocking parts are provided, and at least some of the blocking parts jointly define an arrangement wiring, which is located on the windward side of the guide ring, and the arrangement wiring is arranged corresponding to the path of the airflow flowing through the windward side of the guide ring.

[0015] In addition, the present application also provides a vertical air-conditioning indoor unit, comprising:

[0016] The casing comprises a casing air outlet and a casing air inlet, wherein the casing air outlet and the casing air inlet are respectively arranged at the front side of the casing, the casing air outlet is arranged near the top of the casing, and the casing air inlet is arranged near the bottom of the casing;

[0017] A heat exchanger is disposed in the casing, the heat exchanger is disposed near the top of the casing, and is used to exchange heat with the air passing through the heat exchanger;

[0018] The centrifugal fan is arranged in the casing and is located below the heat exchanger. The centrifugal fan is operated to introduce indoor air into the casing from the casing air inlet, and after the indoor air is in contact with the heat exchanger for heat exchange, it is output to the indoor through the casing air outlet.

[0019] The volute is arranged in the casing; the volute is arranged near the bottom of the casing; the centrifugal fan is arranged inside the volute; the volute includes a volute air inlet and a volute air outlet, the volute air inlet is arranged toward the front side of the casing, and the volute air outlet is arranged toward the top of the casing;

[0020] A guide ring is connected to the volute and is arranged at the air inlet of the volute;

[0021] The blocking part is arranged on the windward side of the guide ring. The blocking part is located at the air inlet of the volute and is used to interrupt or disperse the airflow passing through it;

[0022] The windward surface of the guide ring is defined to form an arrangement wiring, which is arranged corresponding to the path of the airflow flowing through the windward surface of the guide ring; a plurality of blocking parts are provided, and at least some of the blocking parts are arranged along the arrangement wiring.

[0023] This technical solution sets a blocking part on the windward surface of the guide ring, and arranges the blocking part along a wiring line corresponding to the path of the airflow passing through the windward surface of the guide ring, so that the blocking part "breaks up" the airflow along the airflow path to cause sound energy loss, thereby achieving a noise reduction effect.

[0024] In some embodiments, the blocking portion on the wiring is defined to form a normal line, and the normal line and the first horizontal line together define an offset angle β, and the offset angle β satisfies the relationship: β≥5°, β≤8°.

[0025] In some embodiments, the wiring arrangement defines a wiring arrangement height h along the thickness direction of the guide ring, the thickness of the guide ring is H, and the wiring arrangement height h and the thickness H of the guide ring satisfy the relationship: h≥1 / 2H, h≤2 / 3H.

[0026] In some embodiments, the end of the wiring arrangement close to the interior of the volute is the terminal end of the wiring arrangement, and the end of the wiring arrangement away from the interior of the volute is the starting end of the wiring arrangement. The curvature radius of each blocking portion located on the same wiring arrangement decreases successively from the starting end of the wiring arrangement to the terminal end of the wiring arrangement.

[0027] In some embodiments, of adjacent blocking portions on the same row of wiring, a curvature radius of a blocking portion near a starting end of the row of wiring is twice a curvature radius of a blocking portion near a terminal end of the row of wiring.

[0028] In some embodiments, a terminal end of the wiring arrangement defines a tangent line, and the tangent line and the second horizontal line together define an angle α, and the angle α satisfies the relationship: α≥65°, α≤75°.

[0029] In some embodiments, the offset angle β defined by each blocking portion on the wiring arrangement increases sequentially from the beginning to the end of the wiring arrangement.

[0030] In some embodiments, a plurality of wiring lines are provided, and the plurality of wiring lines are arranged circumferentially along a rotation direction of the centrifugal fan.

[0031] In the above embodiment, a vertical air-conditioning indoor unit is provided with a blocking portion on the windward surface of a guide ring, and the blocking portion is arranged along a wiring line corresponding to the path of the airflow passing through the windward surface of the guide ring, so that the blocking portion "breaks up" the airflow along the path of the airflow to cause sound energy loss, thereby achieving a noise reduction effect.

[0032] The vertical air conditioner indoor unit can reduce the noise generated when airflow enters the casing without losing the air intake volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a vertical air conditioner indoor unit according to some embodiments is shown;

[0034] Figure 2 A schematic diagram of the structure of a vertical air conditioner indoor unit according to some embodiments when no wind shield is installed;

[0035] Figure 3 A schematic diagram of the internal structure of a vertical air conditioner indoor unit according to some embodiments is shown;

[0036] Figure 4 A schematic diagram of the structure of a centrifugal fan and a volute in a vertical air conditioner indoor unit according to some embodiments is shown;

[0037] Figure 5 A schematic diagram of the structure of a volute in a vertical air conditioner indoor unit according to some embodiments is shown;

[0038] Figure 6 A schematic structural diagram of another angle when a centrifugal fan and a volute are assembled in a vertical air-conditioning indoor unit according to some embodiments is shown;

[0039] Figure 7 A schematic diagram of the structure of a guide ring in a vertical air conditioner indoor unit according to some embodiments is shown;

[0040] Figure 8 A schematic diagram showing the flow path of airflow passing through a guide ring in the prior art is shown;

[0041] Fig. 9 A schematic diagram of streamlines when air flows through a guide ring in the prior art is shown;

[0042] Fig.10 A schematic diagram showing the flow path of airflow through a guide ring in a vertical air conditioner indoor unit according to some embodiments Figure 1 ;

[0043] Fig.11 A schematic diagram showing the flow path of airflow through a guide ring in a vertical air conditioner indoor unit according to some embodiments Figure 2 ;

[0044] Fig.12 A schematic diagram of the structure of a guide ring in a vertical air conditioner indoor unit according to some embodiments is shown;

[0045] Fig.13 for Fig.12 A local enlarged view of point A in FIG.

[0046] Fig.14 Schematic diagram showing the arrangement of the resistors along the wiring in a vertical air conditioner indoor unit according to some embodiments Figure 1 ;

[0047] Fig.15 Schematic diagram showing the arrangement of the resistors along the wiring in a vertical air conditioner indoor unit according to some embodiments Figure 2 ;

[0048] Fig.16 Schematic diagram showing the arrangement of the resistors along the wiring in a vertical air conditioner indoor unit according to some embodiments Figure 3 .

[0049] In the figure,

[0050] 100, housing; 200, wind shield; 300, heat exchanger; 400, volute; 500, centrifugal fan; 600, guide ring; 700, blocking part;

[0051] 101, air inlet of the casing; 102, air outlet of the casing;

[0052] 401, volute air inlet; 402, volute air outlet;

[0053] 601, guide ring opening;

[0054] 610, mounting portion; 620, flow guide portion;

[0055] 701, first row of wiring; 702, first tangent line; 703, second horizontal line; 704, normal line; 705, first horizontal line; 706, second row of wiring; 707, second tangent line; 708, reference line;

[0056] 710. The first blocking part; 720. The second blocking part; 730. The third blocking part; 740. The fourth blocking part. DETAILED DESCRIPTION

[0057] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0058] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0059] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0060] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0061] The vertical air-conditioning indoor unit provided in the embodiments of the present application may have various implementation forms.

[0062] like Figure 1-Figure 3 This is a specific embodiment of the vertical air-conditioning indoor unit of the present application, and the vertical air-conditioning indoor unit includes a casing 100, which is used to form the overall appearance of the air-conditioning outdoor unit; the casing 100 has a top and a bottom, the top of the casing 100 and the bottom of the casing 100 are opposite ends, and the direction from the top of the casing 100 to the bottom of the casing 100 is the height direction of the casing 100; the left side of the casing 100 and the right side of the casing 100 are opposite sides, and the direction from the left side of the casing 100 to the right side of the casing 100 is the length direction of the casing 100; the front side of the casing 100 and the rear side of the casing 100 are opposite sides, and the direction from the front side of the casing 100 to the rear side of the casing 100 is the thickness direction of the casing 100.

[0063] In actual applications, the rear side of the housing 100 is usually arranged toward a wall, and the front side of the housing 100 is usually arranged toward a user.

[0064] A heat exchange channel is defined inside the casing 100 and extends along the height direction of the casing 100 ; indoor air is heat-exchanged in the heat exchange channel to form air-conditioned air.

[0065] like Figure 1 and Figure 2 As shown, the casing 100 includes a casing air inlet 101, which is connected to the heat exchange channel, and the indoor air enters the heat exchange channel through the casing air inlet 101; the casing air inlet 101 is opened on the front side of the casing 100, and the casing air inlet 101 is arranged close to the bottom of the casing 100.

[0066] In some embodiments, a casing air inlet 101 is disposed on the left side of the casing 100 to increase the air intake volume of the indoor unit of the air conditioner.

[0067] In some other embodiments, a casing air inlet 101 is also provided on the right side of the casing 100 to increase the air intake volume of the indoor unit of the air conditioner.

[0068] In some other embodiments, casing air inlets 101 are respectively provided on the left side of the casing 100 and the right side of the casing 100, which can not only increase the air intake volume of the air conditioner indoor unit, but also keep the casing 100 symmetrical and ensure the aesthetics of the casing 100.

[0069] like Figure 2As shown, the casing 100 includes a casing air outlet 102, which is connected to the heat exchange channel, and the air in the heat exchange channel is output to the room through the casing air outlet 102; the casing air outlet 102 is arranged on the front side of the casing 100, and the casing air outlet 102 is arranged close to the top of the casing 100.

[0070] The housing 100 is connected to a windshield plate 200 . The windshield plate 200 is disposed at the housing air outlet 102 in an openable and closable manner, and is used to open or close the housing air outlet 102 .

[0071] like Figure 3 As shown, the above-mentioned vertical air-conditioning indoor unit includes a heat exchanger 300, which is installed in the casing 100 and located in the heat exchange channel. The air in the heat exchange channel is heat-exchanged by the heat exchanger 300 after contacting the heat exchanger 300 to form air-conditioned wind to meet the user's cooling or heating needs; the heat exchanger 300 is arranged near the top of the casing 100, and the heat exchanger 300 is arranged near the casing air outlet 102.

[0072] It should be noted that the air-conditioning wind can be cold air, hot air, or even normal temperature air.

[0073] like Figure 3 and Figure 4 As shown, the above-mentioned vertical air-conditioning indoor unit includes a centrifugal fan 500, which is installed in the casing 100 and located in the heat exchange channel. Through the operation of the centrifugal fan 500, the indoor air is introduced into the heat exchange channel from the casing air inlet 101, and after heat exchange in the heat exchanger 300 to form air-conditioned air, the air-conditioned air flows into the room from the casing air outlet 102.

[0074] The centrifugal fan 500 is disposed near the bottom of the casing 100 , and the centrifugal fan 500 is disposed near the air inlet 101 of the casing.

[0075] like Figure 5 As shown, the vertical air-conditioning indoor unit includes a volute 400 , which is mounted on the casing 100 and disposed near the bottom of the casing 100 ; the volute 400 is used to install a centrifugal fan 500 , which is disposed inside the volute 400 .

[0076] The volute 400 includes a volute air inlet 401 , which is arranged corresponding to the casing air inlet 101 , and indoor air enters the volute 400 from the casing air inlet 101 through the volute air inlet 401 .

[0077] The volute 400 includes a volute air outlet 402, which is arranged close to the heat exchanger 300. The air inside the volute 400 is output to the inside of the volute 400 through the volute air outlet 402. After the air is output to the inside of the volute 400, it contacts the heat exchanger 300 for heat exchange to form air-conditioning wind.

[0078] The volute 400 defines a receiving chamber, and the centrifugal fan 500 is installed in the receiving chamber; wherein the volute air inlet 401 is communicated with the receiving chamber.

[0079] The volute 400 defines an air outlet duct, which is communicated with the accommodating cavity, wherein the volute air outlet 402 is communicated with the air outlet duct.

[0080] The centrifugal fan 500 operates to introduce indoor air from the casing air inlet 101 through the volute air inlet 401 into the accommodating chamber, and contacts and exchanges heat with the heat exchanger 300 through the air outlet duct 404 .

[0081] The volute 400 includes a front plate 410 . The volute air inlet 401 is opened on the front plate 410 . The front plate 410 is arranged close to the front side of the casing 100 .

[0082] In some embodiments, the opening direction of the volute air inlet 401 is substantially set toward the front side of the casing 100.

[0083] The volute 400 includes a surrounding plate 420 , which is connected to the front plate 410 , so that the surrounding plate 420 and the front plate 410 together define a accommodating cavity and an air outlet duct; wherein the volute air outlet 402 is defined and formed by the surrounding plate 420 .

[0084] In some embodiments, the opening direction of the volute air outlet 402 is substantially arranged toward the top of the casing 100 .

[0085] In some embodiments, the side of the enclosure 420 away from the front panel 410 is connected to the rear side panel of the casing 100, and the rear side panel of the casing 100 is used to limit and / or block the accommodating cavity 403 and the air outlet duct 404 to limit the flow path of the airflow and ensure the stability and reliability of the airflow.

[0086] like Figure 4 and Figure 6 As shown, the volute 400 is connected to a guide ring 600, and the guide ring 600 is arranged at the volute air inlet 401 to guide the air flow into the accommodating cavity.

[0087] It should be noted that the guide ring 600 is arranged outside the accommodating cavity, so that the guide ring 600 can guide the airflow from the volute air inlet 401 into the interior of the volute 400.

[0088] The guide ring 600 defines a guide ring opening 601 , and the guide ring opening 601 is communicated with the volute air inlet 401 .

[0089] like Figure 7As shown, the guide ring 600 includes a mounting portion 610 , which is disposed corresponding to the edge of the volute air inlet 401 . When the guide ring 600 is installed at the volute air inlet 401 , the mounting portion 610 and the edge of the volute air inlet 401 are in contact with each other.

[0090] The mounting portion 610 is limited to form a mounting portion opening, and the mounting portion opening is arranged corresponding to the volute air inlet 401. The air passes through the mounting portion opening and enters the accommodating cavity from the volute air inlet 401.

[0091] The installation portion opening is arranged to penetrate the installation portion 610 along a direction intersecting with the volute side plate where the volute air inlet 401 is opened.

[0092] In some embodiments, the outer diameter of the mounting portion 610 is greater than the inner diameter of the volute air inlet 401 to prevent the mounting portion 610 from passing through the volute air inlet and being disposed in the accommodating cavity.

[0093] The guide ring 600 includes a guide portion 620 , which is connected to a side of the mounting portion 610 facing the volute, and a side of the guide portion 620 away from the mounting portion 610 extends in a direction away from the mounting portion 610 .

[0094] The guide portion 620 is disposed through the volute air inlet 401 , so that the guide portion 620 can guide the airflow from the volute air inlet 401 to flow into the accommodating cavity.

[0095] The guide portion 620 is located at the opening of the mounting portion. The guide portion 620 defines a guide portion opening, and the guide portion opening is communicated with the mounting portion opening.

[0096] In some embodiments, the opening direction of the guide portion is the same as the opening direction of the mounting portion.

[0097] The guide portion opening and the mounting portion opening together define a guide ring opening 601 .

[0098] The inner diameter of the guide portion 620 gradually decreases from the side where the guide portion 620 is connected to the mounting portion 610 toward the side where the guide portion 620 extends into the accommodating cavity.

[0099] In some embodiments, the windward surface of the guide portion 620 is a curved surface to better guide the airflow into the accommodating cavity.

[0100] like Fig. 9 As shown, the streamline arrangement near the volute air inlet 401 is obtained by simulating the movement of the air flow: the flow velocity is higher near the outlet of the centrifugal fan 500, and the streamlines show an inward rotation trend with a certain slope at the volute air inlet 401.

[0101] In the prior art, such as Figure 8As shown, the windward surface of the guide portion 620 is usually a smooth curved surface. When the airflow flows through the windward surface of the guide portion 620, the airflow encounters less resistance, so that when the airflow leaves the guide portion 620, the airflow detaches from the body vortex significantly, and the intake noise is a bit loud.

[0102] Based on this, in this embodiment, a blocking portion 700 is provided on the windward surface of the guide portion 620, and the blocking portion 700 "breaks up" the airflow passing through it to a certain extent, causing sound energy loss, thereby achieving a noise reduction effect.

[0103] like Fig.10 and Fig.11 As shown, after the blocking portion 700 is provided on the windward surface of the guide portion 620, the windward surface of the guide portion 620 becomes complicated. When the gas flows through the windward surface of the blocking portion 700, the airflow will be deformed and refracted at the blocking portion 700, and a small vortex will be formed at the bottom.

[0104] The blocking portion 700 "breaks up" the airflow along the airflow path to cause sound energy loss, thereby achieving a noise reduction effect.

[0105] like Fig.12 As shown, the blocking portion 700 is usually provided in plurality, so that the blocking portion 700 and the airflow flowing through the air guide portion 620 are in contact with each other, thereby having a negative effect on the airflow.

[0106] In order to increase the effect of the blocking portion 700 on the airflow, at least part of the blocking portion 700 is arranged along a line corresponding to the movement path of the airflow when flowing through the windward surface of the guide portion 620, so that the blocking portion 700 can better interact with the airflow.

[0107] That is, at least part of the blocking portion 700 jointly defines an arrangement wiring, which is located on the windward side of the guide ring 600 , and the arrangement wiring is arranged corresponding to the path of the airflow flowing through the windward side of the guide ring 600 .

[0108] It can also be considered that the windward surface of the guide ring 600 is defined to form an arrangement line, and the arrangement line is arranged corresponding to the path of the airflow flowing through the windward surface of the guide ring 600; at least part of the blocking part 700 is arranged along the arrangement line.

[0109] The first row of wirings 701 extends along a side where the guide portion 620 is connected to the mounting portion 610 and toward a side where the guide portion 620 extends into the accommodation cavity.

[0110] For the convenience of description, an end of the first row of wiring 701 close to the mounting portion 610 is called the starting end of the first row of wiring 701 , and an end of the first row of wiring 701 away from the mounting portion 610 is called the terminal end of the first row of wiring 701 .

[0111] like Fig.12As shown, the direction from the side where the guide portion 620 is connected to the mounting portion 610 to the side where the guide portion 620 extends into the accommodating cavity is the thickness direction of the guide ring 600 , and the thickness of the guide ring 600 is H.

[0112] like Fig.13 As shown, the blocking portion 700 on the wiring is defined to form a normal line 704, and the normal line 704 and the first horizontal line 705 together define an offset angle β, and the offset angle β satisfies the relationship: β≥5°, β≤8°.

[0113] The offset angle β defined by each blocking portion 700 on the same row of wiring increases gradually from the beginning to the end of the row of wiring. The purpose is, on the one hand, to better direct the blocking portion 700 toward the airflow and have a better effect of interrupting the airflow, and on the other hand, to better demold in actual manufacturing.

[0114] The distance from the beginning of the wiring arrangement to the end of the wiring arrangement along the thickness direction of the guide ring 600 is the height h of the wiring arrangement. The height h of the wiring arrangement and the thickness H of the guide ring 600 satisfy the relationship: h≥1 / 2H, h≤2 / 3H.

[0115] The width direction of the wiring is from the starting end of the wiring to the terminal end of the wiring along the circumferential direction of the guide portion 620 .

[0116] The width b of the wiring array is defined from the starting end to the terminal end of the wiring array. The width direction of the wiring array is perpendicular to the height direction of the wiring array and is in the same plane.

[0117] It should be noted that the midpoint of each blocking portion 700 arranged along the arrangement wiring is located on the arrangement wiring.

[0118] The curvature radius of each blocking portion 700 located on the same row of wiring decreases from the beginning of the row of wiring to the end of the row of wiring.

[0119] In some embodiments, among adjacent blocking portions 700 located on the same row of wires, the curvature radius of the blocking portion 700 near the beginning of the row of wires is twice the curvature radius of the blocking portion 700 near the end of the row of wires.

[0120] The curvature radius of each blocking portion 700 located on the same row of wiring decreases sequentially from the beginning of the row of wiring to the end of the row of wiring.

[0121] There are multiple wiring lines, and the multiple wiring lines are arranged along the circumference on the windward surface of the guide part 620.

[0122] It should be noted that the path of the airflow when flowing through the windward surface of the air guide portion 620 is a curve, and accordingly, the wiring line is also a curve.

[0123] In some embodiments, the wiring arrangement has a protrusion, and the protrusion is arranged corresponding to the rotation direction of the centrifugal fan 500.

[0124] The inward rotation direction of the wiring arrangement is consistent with the rotation direction of the centrifugal fan 500, and is opposite to the bending direction of the blades of the centrifugal fan 500. The inward rotation direction of the wiring arrangement is consistent with the rotation direction of the centrifugal fan 500 because the air intake direction of the airflow will rotate inward along with the rotation direction of the blades, and the shape of the wiring arrangement is required to be consistent with this direction, so that the airflow can encounter as many blocking parts 700 as possible on the path through which the airflow flows.

[0125] The wiring arrangement when the centrifugal fan 500 rotates clockwise is different from that when the centrifugal fan 500 rotates counterclockwise. The wiring arrangement when the centrifugal fan 500 rotates clockwise is the first wiring row 701 , and the wiring arrangement when the centrifugal fan 500 rotates counterclockwise is the second wiring row 706 .

[0126] like Fig.16 As shown, the starting end of the first row of wiring 701 is also the starting end of the second row of wiring 706 , and the terminal end of the first row of wiring 701 is also the terminal end of the second row of wiring 706 .

[0127] Point A at the beginning of the first row of wiring 701 and point B at the end of the first row of wiring 701 are selected to define a reference line 708 . The first row of wiring 701 and the second row of wiring 706 are symmetrically arranged about the reference line 708 .

[0128] The width b of the first row of wirings 701 is the same as the width b of the second row of wirings 706 , and the height h of the first row of wirings 701 is the same as the height h of the second row of wirings 706 .

[0129] When the row of wirings is the first row of wirings 701 , the terminal of the first row of wirings 701 defines a first tangent line 702 , and the first tangent line 702 and the second horizontal line 703 together define a first angle α.

[0130] The width b of the first row of wirings 701 and the height h of the first row of wirings 701 satisfy the relationship: b=h / tanα.

[0131] The first angle α satisfies the relationship: α≥65°, α≤75°.

[0132] When the row of wirings is the second row of wirings 706 , the terminal of the second row of wirings 706 defines a second tangent line 707 , and the second tangent line 707 and the second horizontal line 703 together define a second angle θ.

[0133] The second angle θ satisfies the relationship: θ≥15°, θ≤25°.

[0134] The width b of the second row of wirings 706 and the height h of the second row of wirings 706 satisfy the relationship: b=h / tan(90°-θ).

[0135] It should be noted that, in theory, the more blocking parts 700 there are on the same row of wiring, the better the effect on airflow; however, in actual applications, the number of blocking parts 700 on the same row of wiring is also limited by the manufacturing process. Usually, the more blocking parts 700 there are on the same row of wiring, the more stringent the requirements on the manufacturing process. Therefore, the number of blocking parts 700 on the same row of wiring still needs to balance the air guiding effect and the manufacturing process.

[0136] The following is a detailed description by taking the arrangement of four blocking portions on the same first row of wiring 701 as an example.

[0137] like Fig.14 and Fig.15 As shown, a first blocking portion 710 is disposed on the first row of wirings 701 , and the first blocking portion 710 is defined to form a first offset angle β1 .

[0138] In some embodiments, the first offset angle β1 satisfies the relationship: β1≥5°, β1≤8°.

[0139] A second blocking portion 720 is disposed on the first row of wirings 701 , and the second blocking portion 720 is defined to form a second offset angle β2 .

[0140] In some embodiments, the second offset angle β2 satisfies the relationship: β2 ≥ 5°, β2 ≤ 8°

[0141] A third blocking portion 730 is disposed on the first row of wirings 701 , and the third blocking portion 730 is defined to form a third offset angle β3 .

[0142] In some embodiments, the third offset angle β3 satisfies the relationship: β3≥5°, β3≤8°.

[0143] A fourth blocking portion 740 is disposed on the first row of wirings 701 , and the fourth blocking portion 740 is defined to form a fourth offset angle β4.

[0144] In some embodiments, the fourth offset angle β4 satisfies the relationship: β4≥5°, β4≤8°.

[0145] The first blocking portion 710 , the second blocking portion 720 , the third blocking portion 730 and the fourth blocking portion 740 are respectively arranged along the first row of wirings 701 from the beginning to the end of the first row of wirings 701 .

[0146] The first offset angle β1 and the second offset angle β2 satisfy the relationship: β1<β2.

[0147] In some embodiments, the first offset angle β1 and the second offset angle β2 satisfy the relationship: β2=2β1.

[0148] The first offset angle β1 and the third offset angle β3 satisfy the relationship: β1<β3.

[0149] In some embodiments, the first offset angle β1 and the third offset angle β3 satisfy the relationship: β3=4β1.

[0150] The first offset angle β1 and the fourth offset angle β4 satisfy the relationship: β1<β4.

[0151] In some embodiments, the first offset angle β1 and the fourth offset angle β4 satisfy the relationship: β4=6β1.

[0152] The second offset angle β2 and the third offset angle β3 satisfy the relationship: β2<β3.

[0153] In some embodiments, the second offset angle β2 and the third offset angle β3 satisfy the relationship: β3=2β2.

[0154] The second offset angle β2 and the fourth offset angle β4 satisfy the relationship: β2<β4.

[0155] In some embodiments, the second offset angle β2 and the fourth offset angle β4 satisfy the relationship: β4=4β2.

[0156] The third offset angle β3 and the fourth offset angle β4 satisfy the relationship: β3<β4.

[0157] In some embodiments, the third offset angle β3 and the fourth offset angle β4 satisfy the relationship: β4=2β3.

[0158] The curvature radius of the first blocking portion 710 is r1, and the curvature radius of the second blocking portion 720 is r2. The curvature radius r1 of the first blocking portion 710 and the curvature radius r2 of the second blocking portion 720 satisfy the relationship: r1>r2.

[0159] In some embodiments, the curvature radius r1 of the first blocking portion 710 and the curvature radius r2 of the second blocking portion 720 satisfy the relationship: r1=1.5r2.

[0160] The curvature radius of the third blocking portion 730 is r3, and the curvature radius r1 of the first blocking portion 710 and the curvature radius r3 of the third blocking portion 730 satisfy the relationship: r1>r3.

[0161] In some embodiments, the curvature radius r1 of the first blocking portion 710 and the curvature radius r3 of the third blocking portion 730 satisfy the relationship: r1=3r3.

[0162] The curvature radius of the fourth blocking portion 740 is r4, and the curvature radius r1 of the first blocking portion 710 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r1>r4.

[0163] In some embodiments, the curvature radius r1 of the first blocking portion 710 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r1=4.5r4.

[0164] The curvature radius r2 of the second blocking portion 720 and the curvature radius r3 of the third blocking portion 730 satisfy the relationship: r2>r3.

[0165] In some embodiments, the curvature radius r2 of the second blocking portion 720 and the curvature radius r3 of the third blocking portion 730 satisfy the relationship: r2=1.5r3.

[0166] The curvature radius r2 of the second blocking portion 720 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r2>r4.

[0167] In some embodiments, the curvature radius r2 of the second blocking portion 720 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r2=3r4.

[0168] The curvature radius r3 of the third blocking portion 730 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r3>r4.

[0169] In some embodiments, the curvature radius r3 of the third blocking portion 730 and the curvature radius r4 of the fourth blocking portion 740 satisfy the relationship: r3=1.5r4.

[0170] In some embodiments of the present application, the blocking portion 700 is a concave point disposed on the windward surface of the guide portion 620 , and the blocking portion 700 is recessed in the windward surface of the guide portion 620 .

[0171] The principle of pit noise reduction is the same as that of sound-absorbing materials. During the propagation of sound waves, the surrounding fluid medium will generate friction during the process of traveling, reflecting, and refracting on the surface of the object, which will lose sound energy and convert it into heat energy, thereby achieving the purpose of noise reduction. On the surface of a smooth structure, this friction resistance is small, the propagation of sound waves in the fluid medium is relatively smooth, and the sound energy loss is small, so the noise is large. On a rough and porous surface, the generation and propagation path of sound waves become complicated, the resistance becomes larger, and the sound energy loss becomes larger, so the noise is reduced. In addition, the rough and porous surface will break up the boundary layer detachment vortex generated after the fluid medium flows through, thereby reducing noise.

[0172] In some other embodiments of the present application, the blocking portion 700 is a convex point disposed on the windward surface of the guide portion 620 , and the blocking portion 700 is disposed protruding from the windward surface of the guide portion 620 .

[0173] The above-mentioned vertical air-conditioning indoor unit is provided with a blocking part 700 on the windward surface of the guide ring 600, and the blocking part 700 is arranged along a wiring line corresponding to the path of the airflow passing through the windward surface of the guide ring 600, so that the blocking part 700 "disperses" the airflow along the airflow path to cause sound energy loss, thereby achieving a noise reduction effect.

[0174] The vertical air conditioner indoor unit can reduce the noise generated when the airflow enters the casing without losing the air intake volume.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0176] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A vertical air conditioner indoor unit, characterized in that: include: A casing, comprising a casing air outlet and a casing air inlet, wherein the casing air outlet and the casing air inlet are respectively arranged at the front side of the casing, the casing air outlet is arranged near the top of the casing, and the casing air inlet is arranged near the bottom of the casing; A heat exchanger is disposed in the casing, the heat exchanger is disposed near the top of the casing, and is used to exchange heat with air passing through the heat exchanger; A centrifugal fan is disposed in the casing, and the centrifugal fan is located below the heat exchanger; The centrifugal fan is operated to introduce indoor air into the casing through the casing air inlet, to be in contact with the heat exchanger for heat exchange, and then to be output to the room through the casing air outlet; A volute is arranged in the casing; the volute is arranged near the bottom of the casing; the centrifugal fan is arranged inside the volute; the volute includes a volute air inlet and a volute air outlet, the volute air inlet is arranged toward the front side of the casing, and the volute air outlet is arranged toward the top of the casing; A guide ring connected to the volute, the guide ring being arranged at the air inlet of the volute; The blocking portion is arranged on the windward surface of the guide ring. The blocking portion is located at the air inlet of the volute and is used to interrupt or disperse the airflow passing through it.

2. The vertical air conditioner indoor unit according to claim 1, characterized in that: The blocking parts are provided in plurality, and at least some of the blocking parts jointly define an arrangement wiring, the arrangement wiring is located on the windward surface of the guide ring, and the arrangement wiring is provided corresponding to the path of the airflow flowing through the windward surface of the guide ring.

3. A vertical air conditioner indoor unit, characterized in that: include: A casing, comprising a casing air outlet and a casing air inlet, wherein the casing air outlet and the casing air inlet are respectively arranged at the front side of the casing, the casing air outlet is arranged near the top of the casing, and the casing air inlet is arranged near the bottom of the casing; A heat exchanger is disposed in the casing, the heat exchanger is disposed near the top of the casing, and is used to exchange heat with air passing through the heat exchanger; A centrifugal fan is disposed in the casing, and the centrifugal fan is located below the heat exchanger; The centrifugal fan is operated to introduce indoor air into the casing through the casing air inlet, to be in contact with the heat exchanger for heat exchange, and then to be output to the room through the casing air outlet; A volute is arranged in the casing; the volute is arranged near the bottom of the casing; the centrifugal fan is arranged inside the volute; the volute includes a volute air inlet and a volute air outlet, the volute air inlet is arranged toward the front side of the casing, and the volute air outlet is arranged toward the top of the casing; A guide ring connected to the volute, the guide ring being arranged at the air inlet of the volute; A blocking portion, which is arranged on the windward surface of the guide ring, and the blocking portion is located at the air inlet of the volute, and is used to interrupt or disperse the airflow passing through it; The windward surface of the guide ring is defined to be formed with an arrangement wiring, and the arrangement wiring is arranged corresponding to the path of the airflow flowing through the windward surface of the guide ring; the blocking parts are provided in plurality, and at least some of the blocking parts are arranged along the arrangement wiring.

4. The vertical air conditioner indoor unit according to claim 2 or 3, characterized in that: The blocking portion on the wiring arrangement defines a normal line, and the normal line and the first horizontal line together define an offset angle β, and the offset angle β satisfies the relationship: β≥5°, β≤8°.

5. The vertical air conditioner indoor unit according to claim 2 or 3, characterized in that: The wiring arrangement defines a height h of the wiring arrangement along the thickness direction of the guide ring, the thickness of the guide ring is H, and the wiring arrangement height h and the thickness H of the guide ring satisfy the relationship: h≥1 / 2H, h≤2 / 3H.

6. The vertical air conditioner indoor unit according to claim 2 or 3, characterized in that: The end of the wiring arrangement close to the interior of the volute is the terminal end of the wiring arrangement, and the end of the wiring arrangement away from the interior of the volute is the starting end of the wiring arrangement. The curvature radius of each of the blocking portions located on the same wiring arrangement decreases successively from the starting end of the wiring arrangement to the terminal end of the wiring arrangement.

7. The vertical air conditioner indoor unit according to claim 6, characterized in that: The curvature radius of the blocking portion adjacent to the blocking portion on the same wiring arrangement and close to the starting end of the wiring arrangement is twice the curvature radius of the blocking portion close to the terminal end of the wiring arrangement.

8. The vertical air conditioner indoor unit according to claim 6, characterized in that: The terminal end of the wiring arrangement defines a tangent line, and the tangent line and the second horizontal line together define an angle α, and the angle α satisfies the relationship: α≥65°, αα≤75°.

9. The vertical air conditioner indoor unit according to claim 6, characterized in that: The offset angle β defined by each of the blocking portions on the wiring array increases sequentially from the starting end of the wiring array to the ending end of the wiring array.

10. The vertical air conditioner indoor unit according to claim 2 or 3, characterized in that: The arrangement wiring is provided in a plurality of pieces, and the plurality of arrangement wirings are arranged circumferentially along the rotation direction of the centrifugal fan.

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