Air pipe type air conditioner

Abstract

The utility model discloses an air pipe type air conditioner which comprises a shell, a fan cavity and a heat exchange cavity are defined by the shell, the shell is provided with an air inlet and an air outlet, the air inlet is communicated with the fan cavity, and the air outlet is communicated with the heat exchange cavity; the fan assembly is arranged in the fan cavity; the heat exchanger is arranged in the heat exchange cavity; the flow guide part is arranged in the heat exchange cavity, in the air flowing direction, the flow guide part is located between the air outlet side of the heat exchanger and the air outlet, the flow guide part is provided with a first noise reduction structure, the first noise reduction structure comprises a first noise reduction cavity and a first noise reduction hole, and the first noise reduction hole communicates with the first noise reduction cavity and the heat exchange cavity. According to the air pipe type air conditioner, the first noise reduction cavity communicated with the heat exchange cavity is arranged, sound waves in the heat exchange cavity can enter the first noise reduction cavity through the first noise reduction holes, the sound waves resonate after entering the first noise reduction cavity, sound energy is consumed through the resonance effect, and therefore the purposes of sound absorption and noise reduction are achieved; and the use experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field, specifically, a kind of ducted air conditioner. BACKGROUND

[0002] The central air-conditioning ducted air conditioner in the related art mostly adopts centrifugal air duct design, and the advantages and disadvantages of the centrifugal air duct directly determine the air volume and noise indicators of the ducted air conditioner, and directly affect the performance parameters of the ducted air conditioner. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a kind of ducted air conditioner, the first noise reduction cavity being communicated with the heat exchange cavity is arranged in the ducted air conditioner, so that the sound wave in the heat exchange cavity can enter the first noise reduction cavity through the first noise reduction hole, and resonance occurs after the sound wave enters the first noise reduction cavity, and sound energy is consumed through resonance effect, so that the purpose of sound absorption and noise reduction is achieved, and the use experience of user is improved.

[0004] According to the ducted air conditioner of the utility model embodiment, the shell defines the fan cavity and the heat exchange cavity arranged in the transverse direction, the shell has the air inlet and the air outlet, the air inlet is communicated with the fan cavity, and the air outlet is communicated with the heat exchange cavity; the fan assembly is arranged in the fan cavity; the heat exchanger is arranged in the heat exchange cavity; the flow guide piece is arranged in the heat exchange cavity, and in the air flow direction, the flow guide piece is located between the air outlet side of the heat exchanger and the air outlet, the flow guide piece is provided with the first noise reduction structure, the first noise reduction structure includes the first noise reduction cavity and the first noise reduction hole, and the first noise reduction hole communicates the first noise reduction cavity and the heat exchange cavity.

[0005] According to the ducted air conditioner of the utility model embodiment, the first noise reduction cavity being communicated with the heat exchange cavity is arranged, so that the sound wave in the heat exchange cavity can enter the first noise reduction cavity through the first noise reduction hole, and resonance occurs after the sound wave enters the first noise reduction cavity, and sound energy is consumed through resonance effect, so that the purpose of sound absorption and noise reduction is achieved, and the use experience of user is improved.

[0006] In addition, the ducted air conditioner according to the above embodiments of the utility model can also have the following additional technical features:

[0007] According to some embodiments of the utility model, the cross-sectional shape of the flow guide piece is airfoil-shaped.

[0008] According to some embodiments of the utility model, the length direction of the flow guide piece extends along the length direction of the air outlet, and the width direction of the flow guide piece extends from the heat exchanger to the air outlet, wherein the two sides of the thickness direction of the flow guide piece are respectively provided with a first flow guide surface and a second flow guide surface, one end of the width direction of the flow guide piece is provided with a first transition surface, and the other end is provided with a second transition surface, one end of the first flow guide surface and one end of the second flow guide surface are connected by the first transition surface, and the other end of the first flow guide surface and the other end of the second flow guide surface are connected by the second transition surface.

[0009] According to some optional embodiments of the utility model, the first transition surface and the second transition surface are both arc surfaces, and the radius of the first transition surface is greater than that of the second transition surface, the first transition surface is close to the air outlet side of the heat exchanger, and the second transition surface is close to the air outlet.

[0010] According to some optional embodiments of the utility model, the flow guide piece comprises a first flow guide plate and a second flow guide plate, the first flow guide plate and the second flow guide plate are oppositely arranged and connected, the first flow guide surface is located on the side of the first flow guide plate away from the second flow guide plate, and the second flow guide surface is located on the side of the second flow guide plate away from the first flow guide plate, wherein the first noise reduction cavity is located between the first flow guide plate and the second flow guide plate, and the first noise reduction hole is arranged on the first flow guide plate and / or the second flow guide plate.

[0011] According to some specific embodiments of the utility model, a separation rib is arranged between the first flow guide plate and the second flow guide plate to separate the space between the first flow guide plate and the second flow guide plate into a plurality of first noise reduction cavities.

[0012] In some embodiments, the number of separation ribs is multiple, multiple separation ribs are arranged at intervals in the length direction or the width direction of the flow guide piece, or multiple separation ribs comprise a first rib and a second rib, and the first rib and the second rib are arranged in cross.

[0013] According to some optional embodiments of the utility model, one of the first flow guide plate and the second flow guide plate is provided with a clamping groove at one end in a first direction, and the other is provided with a clamping convex extending along the first direction at one end in the first direction, and the clamping convex is matched with the clamping groove.

[0014] According to some specific embodiments of the utility model, the number of clamping grooves is multiple, multiple clamping grooves are arranged in a second direction, and the second direction is arranged at an angle to the first direction.

[0015] In some embodiments, the first direction is a width direction of the flow guide, and the second direction is a length direction of the flow guide.

[0016] According to some specific embodiments of the present application, one end of the first flow guide plate in the first direction has a limiting protrusion extending towards the second flow guide plate, the clamping groove is arranged on the limiting protrusion, and the first noise reduction hole is arranged on the first flow guide plate.

[0017] According to some specific embodiments of the present application, the first flow guide plate has a first connecting hole, the second flow guide plate has a second connecting hole, the first flow guide plate and the second flow guide plate are connected by a fastener, the fastener extends along a third direction and is arranged in the first connecting hole and the second connecting hole, and the third direction is arranged at an angle with respect to the first direction.

[0018] In some embodiments, the third direction is a thickness direction of the flow guide.

[0019] In some embodiments, the first noise reduction hole is arranged on the first flow guide plate, one side of the first flow guide plate towards the second flow guide plate is provided with a fixing column, and the first connecting hole is a blind hole and is arranged on the fixing column.

[0020] In some embodiments, a partition rib is arranged between the first flow guide plate and the second flow guide plate to divide the space between the first flow guide plate and the second flow guide plate into a plurality of first noise reduction cavities; a part of the second flow guide plate extends towards the first flow guide plate to form a positioning protrusion on one side of the second flow guide plate towards the first flow guide plate and an installation recess on one side of the second flow guide plate away from the first flow guide plate, the positioning protrusion is inserted into the space surrounded by the partition rib and abuts against the fixing column, and one end of the fastener is accommodated in the installation recess.

[0021] In some embodiments, the fastener is close to the other end of the first flow guide plate and the second flow guide plate in the first direction.

[0022] According to some embodiments of the present application, the flow guide is rotatably arranged in the heat exchange cavity.

[0023] Additional aspects and advantages of the present application will be partially given in the following description, some of which will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent from the following description taken in conjunction with the accompanying drawings wherein:

[0025] Figure 1 is a structure schematic view of the ducted air conditioner according to the embodiment of the present application;

[0026] Figure 2 is a sectional view of the ducted air conditioner according to the embodiment of the present application, at this time the flow guide member extends along the horizontal direction;

[0027] Figure 3 is a sectional view of the ducted air conditioner according to the embodiment of the present application, at this time the flow guide member extends downwardly and obliquely;

[0028] Figure 4 is a front view of the ducted air conditioner according to the embodiment of the present application;

[0029] Figure 5 is a sectional view at A-A in FIG. 1; Figure 4

[0030] Figure 6 is a partial sectional view of the ducted air conditioner according to the embodiment of the present application;

[0031] Figure 7 is a partial sectional view of the ducted air conditioner according to the embodiment of the present application;

[0032] Figure 8 is a structure schematic view of the flow guide member according to the embodiment of the present application;

[0033] Figure 9 is a top view of the flow guide member according to the embodiment of the present application;

[0034] Figure 10 is a bottom view of the flow guide member according to the embodiment of the present application;

[0035] Figure 11 is a sectional view at B-B in FIG. 1; Figure 10

[0036] is a sectional view at C-C in FIG. 1; Figure 12 Figure 10 is a structure exploded view of the flow guide member according to the embodiment of the present application;

[0037] Figure 13 is an enlarged view at D in FIG. 1;

[0038] Figure 14 Figure 13 is a principle schematic view of the Helmholtz resonator.

[0039] Figure 15 is a principle schematic view of the Helmholtz resonator.

[0040] Reference signs: 1, ducted air conditioner;

[0041] ​​​10. Outer shell; 11. Fan cavity; 12. Heat exchange cavity; 13. Air inlet; 14. Air outlet; 15. First bracket; 151. Through hole; 16. Second bracket; 161. Second shaft hole; 17. Separator; 171. Connecting port; 172. Third noise reduction cavity;

[0042] 20. Fan assembly; 21. Volute; 2101. First housing; 2102. Second housing; 211. Air duct; 213. Outlet; 215. Volute tongue; 216. First air duct wall; 22. Fan wheel; 30. Heat exchanger;

[0043] 60. Airflow guide;

[0044] 601, First guide plate; 6011, Limiting protrusion; 6012, First connecting hole; 6013, Fixing post;

[0045] 602. Second guide plate; 6022. Second connecting hole; 6023. Positioning protrusion; 6024. Mounting recess;

[0046] 611. First guide surface; 612. Second guide surface; 621. First transition surface; 622. Second transition surface; 63. Separating rib; 631. First rib; 632. Second rib;

[0047] 641. Card slot; 642. Card protrusion;

[0048] 66. Connecting post; 661. First shaft hole; 67. Second connecting shaft;

[0049] 711. First noise reduction cavity; 712. First noise reduction aperture;

[0050] 80. Drive motor; 81. First connecting shaft. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0052] The following description, with reference to the accompanying drawings, describes a ducted air conditioner according to an embodiment of the present invention.

[0053] like Figures 1-5 As shown, the duct-type air conditioner 1 according to an embodiment of the present utility model includes a housing 10, a fan assembly 20, a heat exchanger 30, and a flow guide 60.

[0054] The shell 10 defines a fan cavity 11 and a heat exchange cavity 12 arranged in the transverse direction, the shell 10 has an air inlet 13 and an air outlet 14, the air inlet 13 communicates with the fan cavity 11, the air outlet 14 communicates with the heat exchange cavity 12, a fan assembly 20 is arranged in the fan cavity 11, and a heat exchanger 30 is arranged in the heat exchange cavity 12, the fan assembly 20 can drive external air to enter the fan cavity 11 and the heat exchange cavity 12 from the air inlet 13, and after heat exchange by the heat exchanger 30 in the heat exchange cavity 12, the air flows to a designated area from the air outlet 14, so as to cool or heat the designated area.

[0055] The flow guide 60 is arranged in the heat exchange cavity 12, and in the air flow direction, the flow guide 60 is located between the air outlet side of the heat exchanger 30 and the air outlet 14, the flow guide 60 is used for guiding the flow of air, so that the air after heat exchange by the heat exchanger 30 can flow to the designated area along the flow guide plate.

[0056] The flow guide 60 is provided with a first noise reduction structure, the first noise reduction structure includes a first noise reduction cavity 711 and a first noise reduction hole 712, the first noise reduction hole 712 communicates the first noise reduction cavity 711 and the heat exchange cavity 12, sound waves in the heat exchange cavity 12 can enter the first noise reduction cavity 711 through the first noise reduction hole 712, and the sound waves will resonate in the first noise reduction cavity 711 to consume the energy of the sound waves, thereby playing a noise reduction effect.

[0057] Specifically, the first noise reduction structure arranged on the flow guide 60 is close to the air outlet 14 of the ducted air conditioner 1, and the noise reduction by the first noise reduction structure can sufficiently reduce the noise transmitted from the air outlet 14 to the outside, thereby improving the user experience.

[0058] The first noise reduction hole 712 has a smaller flow area than the first noise reduction cavity 711. When air flows from the first noise reduction hole 712 into the first noise reduction cavity 711, the flow speed of the air in the first noise reduction cavity 711 is much smaller than the flow speed of the air in the central part of the first noise reduction cavity 711, so that a more intense shear flow is formed in the first noise reduction cavity 711, accompanied by unstable disturbance waves. At the same time, if the air column in the first noise reduction hole 712 is disturbed to move into the first noise reduction cavity 711, the gas in the first noise reduction cavity 711 is compressed, the pressure increases, and at this time the air in the first noise reduction hole 712 is blocked from moving inward and moves outward. After passing through the equilibrium position, the air continues to move outward due to inertia, causing the pressure in the first noise reduction cavity 711 to decrease, and then causing the air column in the first noise reduction hole 712 to stop moving outward and move inward. When the frequency of the disturbance wave matches the incoming air frequency, resonance occurs, thereby reducing or eliminating noise and achieving the purpose of noise reduction.

[0059] Specifically, when the sound wave resonates in the first noise reduction cavity 711, the sound energy is consumed in three ways.

[0060] First, when the sound wave resonates, the air column moves violently, and the air column rubs against the inner wall of the first noise reduction cavity 711, causing the local sound energy to be converted into heat energy and thereby consumed.

[0061] Second, the incident sound wave diffuses at the first noise reduction hole 712, causing the sound wave energy to be dispersed to a wider area, thereby reducing the concentrated propagation of the sound wave and reducing the impact of noise on a specific area.

[0062] Third, when the air in the first noise reduction cavity 711 vibrates, the pressure of the air in the first noise reduction cavity 711 changes, thereby storing energy. This energy storage allows the Helmholtz resonator to continue to vibrate for a period of time after the sound wave stops, prolonging the noise reduction time.

[0063] It should be noted that the resonance frequency of the Helmholtz resonator depends on the geometry and volume of the resonator, so the flow area of the first noise reduction hole 712 and / or the flow area of the first noise reduction cavity 711 can be adjusted according to the noise frequency to be eliminated. That is, the form of cooperation between the first noise reduction hole 712 and the first noise reduction cavity 711 can achieve the purpose of absorbing noise of a specific frequency and reducing noise in the heat exchange cavity 12 to some extent, thereby improving the user experience.

[0064] The noise frequency to be eliminated S is the cross-sectional area of the first noise reduction hole 712, S = πD 2 / 4, V is the volume of the first noise reduction cavity 711, and L is the length of the first noise reduction hole 712 (for details, see Figure 15 ).

[0065] Based on this, in specific examples, the absorption of noise of a specific frequency by the first noise reduction hole 712 and the first noise reduction cavity 711 can be achieved by adjusting the cross-sectional area of the first noise reduction hole 712, the volume of the first noise reduction cavity 711, or the length of the first noise reduction hole 712.

[0066] Therefore, the duct type air conditioner 1 according to the embodiments of the present application can make the sound waves in the heat exchange cavity 12 enter the first noise reduction cavity 711 through the first noise reduction hole 712, and the sound waves will resonate after entering the first noise reduction cavity 711, thereby consuming sound energy through the resonance effect, so as to achieve the purpose of sound absorption and noise reduction, and facilitate to improve the user's use experience.

[0067] The duct type air conditioner 1 according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0068] In some embodiments of the present application, as shown in Figures 1-5 , the duct type air conditioner 1 comprises a shell 10, a fan assembly 20, a heat exchanger 30, and a flow guide 60.

[0069] In some embodiments of the present application, as shown in Figure 8 , Figure 11 , the cross-sectional shape of the flow guide 60 is wing-shaped, so that when the air flows through the flow guide 60, the resistance of the flow guide 60 to the air can be reduced, and thus the influence of the flow guide 60 on the air speed can be reduced, so as to ensure the air volume of the duct type air conditioner 1, and make the air flow smoothly along the flow guide 60 to the designated area.

[0070] In some embodiments of the present application, as shown in Figure 4 , Figure 5 , the length direction of the flow guide 60 extends along the length direction of the air outlet 14, and the width direction of the flow guide 60 extends from the heat exchanger 30 to the air outlet 14, so as to sufficiently guide the air flowing out of the air outlet 14, and make the air flowing through the heat exchanger 30 flow smoothly along the flow guide 60 to the designated area.

[0071] Among them, as Figure 8 , Figure 11As shown, the two sides of the thickness direction of the flow guide 60 are respectively provided with a first flow guide surface 611 and a second flow guide surface 612, one end of the width direction of the flow guide 60 is provided with a first transition surface 621 and the other end is provided with a second transition surface 622, one end of the first flow guide surface 611 and one end of the second flow guide surface 612 are connected by the first transition surface 621, and the other end of the first flow guide surface 611 and the other end of the second flow guide surface 612 are connected by the second transition surface 622, so that when the air flows along the first flow guide surface 611 and the second flow guide surface 612, the resistance of the air flowing through the connection position of the first flow guide surface 611 and the second flow guide surface 612 can be reduced, and vortexes can be avoided at the connection position of the first flow guide surface 611 and the second flow guide surface 612, thereby reducing noise.

[0072] In some embodiments, in the width direction of the flow guide 60, the thickness of the flow guide 60 increases first and then decreases, so that when the air flows along the flow guide 60 to the air outlet 14, the air flows from the thicker area of the flow guide 60 to the thinner area, thereby reducing the resistance of the flow guide 60 to the air and reducing the influence of the flow guide 60 on the wind speed, so that the air can flow smoothly along the flow guide 60 to the designated area.

[0073] In some optional embodiments of the present application, the first transition surface 621 and the second transition surface 622 are both arc surfaces, so that the end of the first flow guide surface 611 and the end of the second flow guide surface 612 are arc transitionally connected, so that when the air flows along the first flow guide surface 611 and the second flow guide surface 612, the resistance of the air flowing through the connection position of the first flow guide surface 611 and the second flow guide surface 612 can be reduced, and vortexes can be avoided at the connection position of the first flow guide surface 611 and the second flow guide surface 612, thereby reducing noise.

[0074] In some embodiments of the present application, the radius of the first transition surface 621 is greater than the radius of the second transition surface 622, the first transition surface 621 is close to the air outlet side of the heat exchanger 30, and the second transition surface 622 is close to the air outlet 14, and the second transition surface 622 with a smaller radius is arranged close to the air outlet 14, so that when the flow guide 60 is used to guide the air, the air flows from the first transition surface 621 to the second transition surface 622, and when the air flows along the first flow guide surface 611 and the second flow guide surface 612 to the second transition surface 622, the air on both sides of the thickness direction of the flow guide 60 flows towards each other, thereby enabling the air to converge after flowing through the flow guide 60, so as to concentrate on cooling or heating the designated area, and improve the cooling or heating effect of the air pipe type air conditioner 1.

[0075] In some specific embodiments of the present application, as shown in Figure 2 , Figure 3As shown, in the initial state after the duct type air conditioner 1 is started, the flow guide 60 extends in the horizontal direction, and after the duct type air conditioner 1 is started for a period of time, the flow guide 60 can rotate, thereby changing the extension direction of the flow guide 60, so as to adjust the direction of the air flowing out of the air outlet 14 according to the needs.

[0076] In the heating mode of the duct type air conditioner 1, the flow guide 60 gradually extends downward from the heat exchanger 30 to the air outlet 14, and the first flow guide surface 611 and the second flow guide surface 612 both gradually extend downward from the heat exchanger 30 to the air outlet 14, and the first flow guide surface 611 is located above the second flow guide surface 612, so that when the air conditioner heats the specified area, the hot air can flow to the lower area along the first flow guide surface 611 and the second flow guide surface 612, thereby heating the specified area.

[0077] Specifically, the hot air has a small density and a tendency to float upward, and the flow guide 60 can make the hot air flow downward, thereby enabling the hot air to flow to the lower area, so as to heat the lower area and meet the heating needs.

[0078] Among them, the air located on the upper part of the flow guide 60 can flow to the lower area along the first flow guide surface 611, and the air located on the lower part of the flow guide 60 can flow to the lower area along the second flow guide surface 612, so as to sufficiently guide the flow direction of the air flowing through the heat exchanger 30, so that the air can flow to the lower area along the first flow guide surface 611 and the second flow guide surface 612, thereby enabling the specified area to be heated.

[0079] In some embodiments, as Figure 3 As shown, in the heating mode of the duct type air conditioner 1, the second flow guide surface 612 has a gap with the lower edge of the air outlet 14, so as to avoid that the flow guide 60 completely blocks the lower part of the air outlet 14, thereby enabling the air to flow out of the gap between the second flow guide surface 612 and the lower edge of the air outlet 14, and reducing the influence of the flow guide 60 on the air outlet of the duct type air conditioner 1.

[0080] In some optional embodiments of the utility model, as Figure 13 As shown, the flow guide 60 comprises a first flow guide plate 601 and a second flow guide plate 602, the first flow guide plate 601 and the second flow guide plate 602 are oppositely arranged and connected, the first flow guide surface 611 is located on the side of the first flow guide plate 601 away from the second flow guide plate 602, and the second flow guide surface 612 is located on the side of the second flow guide plate 602 away from the first flow guide plate 601, so as to define the first noise reduction cavity 711 by the first flow guide plate 601 and the second flow guide plate 602, thereby facilitating the manufacturing difficulty of the flow guide 60.

[0081] The first noise reduction cavity 711 is located between the first flow guide plate 601 and the second flow guide plate 602, and the first noise reduction hole 712 is arranged on the first flow guide plate 601 and / or the second flow guide plate 602; sound waves in the heat exchange cavity 12 can enter the first noise reduction cavity 711 through the first noise reduction hole 712 on the first flow guide plate 601 and / or the second flow guide plate 602, and resonance occurs in the first noise reduction cavity 711, thereby consuming the energy in the sound waves and achieving the noise reduction effect.

[0082] In some specific embodiments of the utility model, as shown in Figure 13 The first flow guide plate 601 and the second flow guide plate 602 are provided with a separation rib 63, so as to separate the space between the first flow guide plate 601 and the second flow guide plate 602 into a plurality of first noise reduction cavities 711; each first noise reduction cavity 711 is communicated with the heat exchange cavity 12 through at least one first noise reduction hole 712, so that the sound waves in the heat exchange cavity 12 can enter the first noise reduction cavity 711 through the first noise reduction hole 712, and the plurality of first noise reduction cavities 711 are used to achieve the sound reduction effect.

[0083] In some embodiments, the plurality of separation ribs 63 are arranged in the length direction or the width direction of the flow guide 60,

[0084] In some embodiments, as shown in Figure 13 The plurality of separation ribs 63 include a first rib 631 and a second rib 632, and the first rib 631 and the second rib 632 are arranged in a cross manner, so as to separate the cavity between the first flow guide plate 601 and the second flow guide plate 602 into a plurality of first noise reduction cavities 711, and the plurality of first noise reduction cavities 711 are used to achieve the noise reduction effect.

[0085] In some examples, the first rib 631 extends in the length direction of the flow guide 60, the plurality of first ribs 631 are arranged in the width direction of the flow guide 60, the second rib 632 extends in the width direction of the flow guide 60, and the plurality of second ribs 632 are arranged in the length direction of the flow guide 60; the plurality of first ribs 631 and the plurality of second ribs 632 are used to separate the cavity between the first flow guide plate 601 and the second flow guide plate 602 into a plurality of first noise reduction cavities 711, and the plurality of first noise reduction cavities 711 are used to achieve the noise reduction effect.

[0086] In some embodiments, the separation rib 63 is integrally formed with the first flow guide plate 601, so as to facilitate reducing the connection steps and reducing the installation difficulty.

[0087] In some embodiments, by arranging the first noise reduction cavity 711 on the flow guide 60, the noise of about 2db can be reduced without changing the size of the duct type air conditioner 1, without affecting the structure and performance of the original duct type air conditioner 1.

[0088] In some optional embodiments of the utility model, as shown in Figure 13 , Figure 14 One end of one of the first flow guide plate 601 and the second flow guide plate 602 in the first direction is provided with a clamping groove 641, and the other end of the other one of the first flow guide plate 601 and the second flow guide plate 602 in the first direction is provided with a clamping convex 642 extending along the first direction, and the clamping convex 642 is matched with the clamping groove 641 to facilitate positioning and connecting the first flow guide plate 601 and the second flow guide plate 602 together, and this way of fixing and connecting the first flow guide plate 601 and the second flow guide plate 602 together by using the clamping convex 642 and the clamping groove 641 is relatively simple and convenient to operate.

[0089] In some specific embodiments of the utility model, the number of clamping grooves 641 is multiple, and the multiple clamping grooves 641 are arranged in the second direction, and the second direction is arranged at an angle with the first direction to firmly fix and connect the first flow guide plate 601 and the second flow guide plate 602 together by using the cooperation of the multiple clamping convexes 642 and the multiple clamping grooves 641.

[0090] In some embodiments, the first direction is the width direction of the flow guide piece 60, and the second direction is the length direction of the flow guide piece 60.

[0091] As shown in Figure 14 In the present embodiment, the first flow guide plate 601 defines multiple clamping grooves 641 at one end in the width direction, the multiple clamping grooves 641 are arranged at intervals along the length direction of the first flow guide plate 601, the second flow guide plate 602 is provided with multiple clamping convexes 642 at one end in the width direction, the multiple clamping convexes 642 are arranged at intervals along the length direction of the second flow guide plate 602, and the multiple clamping convexes 642 are matched with the multiple clamping grooves 641 one by one to facilitate positioning and connecting the first flow guide plate 601 and the second flow guide plate 602 together.

[0092] In some specific embodiments of the utility model, as shown in Figure 13 , Figure 14 The first flow guide plate 601 has a limiting convex part 6011 extending towards the second flow guide plate 602 at one end in the first direction, the clamping groove 641 is arranged on the limiting convex part 6011, the first noise reduction hole 712 is arranged on the first flow guide plate 601, and the limiting convex part 6011 is matched with the edge of the second flow guide plate 602 to ensure the airtightness of the first noise reduction cavity 711 while the clamping groove 641 and the clamping convex 642 are matched.

[0093] In some optional embodiments of the utility model, as shown in Figures 12-14As shown, the first guide plate 601 has a first connecting hole 6012, the second guide plate 602 has a second connecting hole 6022, the first guide plate 601 and the second guide plate 602 are connected through a fastener, the fastener extends along a third direction and is arranged through the first connecting hole 6012 and the second connecting hole 6022, so as to fixedly connect the first guide plate 601 and the second guide plate 602 together, and the third direction is arranged at an angle with the first direction.

[0094] In some specific embodiments of the utility model, the third direction is the thickness direction of the guide piece 60, the axial direction of the first connecting hole 6012 and the second connecting hole 6022 extends along the thickness direction of the guide piece 60, and the fastener is arranged through the first connecting hole 6012 and the second connecting hole 6022 along the third direction, so as to fixedly connect the first guide plate 601 and the second guide plate 602 together.

[0095] In some specific embodiments of the utility model, as shown in Figure 12 、 Figure 14 As shown, the first noise reduction hole 712 is arranged on the first guide plate 601, the first guide plate 601 is provided with a fixed column 6013 on the side facing the second guide plate 602, the first connecting hole 6012 is a blind hole and is arranged on the fixed column 6013, and the fastener is matched with the first connecting hole 6012 by passing through the second connecting hole 6022, so as to fixedly connect the first guide plate 601 and the second guide plate 602 together.

[0096] In some embodiments, the first connecting hole 6012 has an internal thread, and the fastener is threadedly connected with the first connecting hole 6012 by passing through the second connecting hole 6022, so as to fixedly connect the first guide plate 601 and the second guide plate 602 together.

[0097] In some embodiments, as shown in Figure 13 The first guide plate 601 and the second guide plate 602 are provided with a partition rib 63, and the partition rib 63 divides the space between the first guide plate 601 and the second guide plate 602 into a plurality of first noise reduction cavities 711.

[0098] The peripheral wall of the fixed column 6013 is connected with the partition rib 63, a part of the second guide plate 602 extends towards the first guide plate 601, so as to form a positioning convex part 6023 on the side of the second guide plate 602 facing the first guide plate 601 and form a mounting concave part 6024 on the side of the second guide plate 602 away from the first guide plate 601, the positioning convex part 6023 is inserted into the space surrounded by the partition rib 63 and abuts against the fixed column 6013, so as to limit the relative position of the first guide plate 601 and the second guide plate 602, and one end of the fastener is accommodated in the mounting concave part 6024, so as to avoid the end of the fastener protruding from the second guide surface 612.

[0099] In some examples, as shown in Figure 13 The fastener is a screw, and when the screw is screwed through the second connecting hole 6022 and is screwed into the first connecting hole 6012, the screw head of the screw is accommodated in the mounting recess 6024, so that the fastener does not protrude from the second flow guide surface 612.

[0100] In some optional embodiments of the present application, as shown in Figure 8 , Figure 12 The fastener is arranged near the other end of the first flow guide plate 601 and the second flow guide plate 602 in the first direction, so that in the width direction, one end of the first flow guide plate 601 and the second flow guide plate 602 can be fixed by the cooperation of the clamping protrusion 642 and the clamping groove 641, and the other end of the first flow guide plate 601 and the second flow guide plate 602 can be fixed by the fastener, thereby firmly connecting the first flow guide plate 601 and the second flow guide plate 602 together.

[0101] In some embodiments of the present application, the flow guide 60 is rotatably arranged in the heat exchange cavity 12, so that the flow guide 60 can rotate, the extension direction of the flow guide 60 can be changed, and the flow direction of the air after being heat exchanged by the heat exchanger 30 can be guided by the flow guide 60, so that the air can flow to a specified area in a specified direction along the flow guide 60.

[0102] In some embodiments of the present application, as shown in Figure 6 The air pipe type air conditioner 1 further comprises a driving motor 80, the driving motor 80 is arranged in the shell 10 and is connected with the flow guide 60, and the driving motor 80 is used to drive the flow guide 60 to rotate, so as to change the extension direction of the flow guide 60, and then the flow direction of the air flowing out of the air outlet 14 can be changed according to the requirement by the flow guide 60, so as to guide the air to a specified position.

[0103] Specifically, by rotating the flow guide 60, the air can be guided to a higher or lower position by the flow guide 60, so that a specified area can be cooled or heated, and the cooling or heating effect is improved.

[0104] In some optional embodiments of the present application, as shown in Figure 6 , Figure 8 One end of the length direction of the flow guide 60 is provided with a connecting column 66, the connecting column 66 defines a first shaft hole 661, and the driving motor 80 is inserted and matched with the first shaft hole 661 through a first connecting shaft 81, so as to drive the flow guide 60 to rotate, thereby changing the extension direction of the flow guide 60 and the flow direction of the air flowing out of the air outlet 14.

[0105] In some embodiments, as shown in Figure 8As shown, the first shaft hole 661 is a non-circular shaft hole, for example, a triangular shaft hole, a quadrilateral shaft hole, a pentagonal shaft hole or a hexagonal shaft hole, and correspondingly, the projection of the outer periphery of the first connecting shaft 81 on the length direction of the flow guide 60 is a triangle, a quadrilateral, a pentagon or a hexagon, so as to limit the relative rotation of the first connecting shaft 81 and the first shaft hole 661, and further enable the driving motor 80 to smoothly drive the connecting column 66 and the flow guide 60 to rotate through the first connecting shaft 81, so as to change the extension direction of the flow guide 60, and further change the air flow direction at the air outlet 14 by using the flow guide 60.

[0106] Alternatively, the inner peripheral wall of the first shaft hole 661 is a non-cylindrical surface, for example, the inner peripheral wall of the first shaft hole 661 is provided with a notch or a protrusion, and correspondingly, the outer peripheral wall of the first connecting shaft 81 is provided with a protrusion or a notch, so as to limit the relative rotation of the first connecting shaft 81 and the first shaft hole 661, and further enable the driving motor 80 to smoothly drive the connecting column 66 and the flow guide 60 to rotate through the first connecting shaft 81, so as to change the extension direction of the flow guide 60, and further change the air flow direction at the air outlet 14 by using the flow guide 60.

[0107] In some specific embodiments of the present application, as shown in Figure 6 The shell 10 is provided with a first support 15, the driving motor 80 and the flow guide 60 are located on both sides of the first support 15, the first support 15 is provided with a through hole 151, the connecting column 66 is arranged in the through hole 151 to be inserted and matched with the first connecting shaft 81, so as to realize the cooperation of the connecting column 66 and the first connecting shaft 81, and further enable the driving motor 80 to smoothly drive the flow guide 60 to rotate through the cooperation of the first connecting shaft 81 and the connecting column 66, so as to change the extension direction of the flow guide 60.

[0108] The connecting column 66 is arranged in the through hole 151 of the first support 15, so as to support the rotation of the flow guide 60 by using the first support 15, and at the same time, when the flow guide 60 shakes, the inner wall of the through hole 151 can limit the shaking amplitude of the flow guide 60, and further reduce the collision force of the connecting column 66 to the first connecting shaft 81 and the collision force received by the driving motor 80.

[0109] Specifically, the motor has a transmission gear, and when the transmission gear is impacted, the transmission gear is easy to be damaged, and the rotation of the connecting column 66 is supported by using the through hole 151, so that when the flow guide 60 and the connecting column 66 shake, the inner wall of the through hole 151 limits the shaking amplitude of the flow guide 60 and the connecting column 66, and further reduces the impact force of the connecting column 66 to the first connecting shaft 81 and the impact force received by the transmission gear.

[0110] In some embodiments of the present application, as shown in Figure 7As shown, the second support 16 is arranged in the shell 10, the second support 16 is provided with a second shaft hole 161, the other end of the length direction of the flow guide piece 60 is provided with a second connecting shaft 67, the second connecting shaft 67 is rotationally matched with the second shaft hole 161, the rotation of the second connecting shaft 67 and the flow guide piece 60 is supported by the second support 16, the shaking range of the second connecting shaft 67 and the flow guide piece 60 is limited by the inner wall of the second shaft hole 161, so that the flow guide piece 60 can rotate smoothly, and the noise generated when the flow guide piece 60 is driven to rotate is reduced.

[0111] In some embodiments of the utility model, as shown in Figure 2 、 Figure 3 As shown, the shell 10 is provided with a partition 17, the partition 17 divides the inner cavity of the shell 10 into the heat exchange cavity 12 and the fan cavity 11, the partition 17 defines a communication port 171, the fan assembly 20 includes a volute 21 and a fan wheel 22, the volute 21 defines an air duct 211, the fan wheel 22 is rotatably arranged in the air duct 211, the inlet of the air duct 211 is communicated with the fan cavity 11, and the communication port 171 is communicated with the outlet 213 of the air duct 211 and the heat exchange cavity 12.

[0112] Specifically, when the fan wheel 22 rotates, the fan wheel 22 can drive air to enter the fan cavity 11 from the air inlet 13, the air in the fan cavity 11 enters the air duct 211 from the inlet of the air duct 211, flows to the communication port 171 from the outlet 213 of the air duct 211, and flows to the heat exchange cavity 12 through the communication port 171, and then flows to the designated area from the air outlet 14 after heat exchange in the heat exchange cavity 12.

[0113] In some embodiments, as shown in Figure 2 The fan wheel 22 is a centrifugal fan, the air inlet 13 is located below the volute 21, the air outlet 14 is located on the front side of the shell 10, the inlet of the air duct 211 is located on one side of the axial direction of the fan wheel 22, when the fan wheel 22 rotates, the fan wheel 22 drives the air below the air pipe type air conditioner 1 to enter the fan cavity 11 from the air inlet 13, enters the air duct 211 from the inlet of the air duct 211, and flows to the heat exchange cavity 12 from the outlet 213 of the air duct 211 along the circumferential direction of the fan wheel 22, and then flows to the outside from the air outlet 14 after heat exchange in the heat exchange cavity 12, so as to cool or heat the designated area.

[0114] In some optional embodiments of the utility model, as shown in Figure 3As shown, the volute 21 comprises a volute tongue 215 and a first air duct wall 216 oppositely arranged, the volute tongue 215 and the first air duct wall 216 are located at the peripheral side of the communication port 171 and are both connected with the partition 17, the outlet 213 of the air duct 211 is located between the volute tongue 215 and the first air duct wall 216, the volute tongue 215 and the first air duct wall 216 have the function of guiding air to the communication port 171, so that the air in the air duct 211 can flow through the communication port 171 to the heat exchange cavity 12 smoothly, and after heat exchange with the heat exchanger 30 in the heat exchange cavity 12, the air flows to the designated area from the air outlet 14.

[0115] In some embodiments, the first air duct wall 216 is adapted to define a second noise reduction cavity, and the first air duct wall 216 is provided with a second noise reduction hole, the second noise reduction hole communicates the second noise reduction cavity and the air duct 211, so that the sound wave in the air duct 211 can enter the second noise reduction cavity through the second noise reduction hole, and the sound wave can resonate in the second noise reduction cavity to consume the energy of the sound wave, thereby achieving the effect of noise reduction.

[0116] Specifically, since the air is sucked into the air duct 211 by the wind wheel 22 during operation, and is sent out after being pressurized by the work of the wind wheel 22, the high-speed rotation of the wind wheel 22 causes the airflow to interact with the airflow relatively static behind the wind wheel 22 due to the influence of air molecular viscous friction during this process, forming a vortex airflow in the downstream area of the wind wheel 22, and these vortices change and fall off constantly. The pressure at the center of each vortex is lower than the surrounding medium pressure, and when a vortex falls off, a pressure jump occurs in the turbulent airflow, and these jumping pressures are transmitted outward through the surrounding medium and act on the wind wheel 22. When the pressure pulsation in the turbulent flow contains audible frequency components and is strong enough, noise is radiated, forming turbulent flow noise. At the same time, when the wind wheel 22 rotates, the wind wheel 22 sweeps the air at the adjacent position, and due to the mutual force, the gas medium is affected by the wind wheel 22, generating a periodic pressure field and emitting noise; when the airflow flows through the wind wheel 22, the suction surface and the pressure surface of the trailing edge form a wake zone. In the wake zone, the pressure and velocity of the airflow are much lower than those in the main flow zone. When the wind wheel 22 rotates, the airflow in the outlet 213 area of the air duct 211 has great non-uniformity. The potential flow field of this non-uniformity periodically acts on the surrounding obstacles, which will produce noise similar to plucking a string to make the object produce sound.

[0117] Therefore, it can be known that when the wind wheel 22 rotates, a large noise will be formed at the outlet 213 of the air duct 211, and the second noise reduction cavity is arranged on the first air duct wall 216, so that the sound wave can enter the second noise reduction cavity from the second noise reduction hole on the first air duct wall 216, and the sound wave resonates in the second noise reduction cavity to consume the energy of the sound wave, thereby reducing the noise.

[0118] The principle by which the second noise reduction cavity can perform noise reduction is the same as that of the first noise reduction cavity 711 mentioned above, and will not be elaborated further here.

[0119] In some embodiments, such as Figure 3 As shown, the partition 17 is adapted to define a third noise reduction cavity 172. The partition 17 is provided with a third noise reduction hole, which connects the third noise reduction cavity 172 and the connecting port 171. The third noise reduction hole is located near the first air duct wall 216. Sound waves at the connecting port 171 can enter the third noise reduction cavity 172 through the third noise reduction hole. The sound waves can resonate in the third noise reduction cavity 172, thereby consuming the energy in the sound waves to achieve the effect of noise reduction.

[0120] Specifically, the first air duct wall 216 has a guiding effect on the airflow direction, so that the third noise reduction hole is set close to the first air duct wall 216. When the air flows along the first air duct wall 216 towards the vent, the sound waves in the air can smoothly pass through the second noise reduction hole on the first air duct wall 216 and enter the second noise reduction cavity. The sound waves can pass through the third noise reduction hole and enter the third noise reduction cavity 172. Then, the second noise reduction cavity and the third noise reduction cavity 172 are used to consume the energy of the sound waves, thereby achieving the noise reduction effect.

[0121] The principle by which the third noise reduction cavity 172 performs noise reduction is the same as that of the first noise reduction cavity 711, and will not be elaborated further here.

[0122] In some optional embodiments of this utility model, such as Figure 2 , Figure 3 As shown, the volute 21 includes a first housing 2101 and a second housing 2102. The first housing 2101 and the second housing 2102 are arranged opposite to each other and define an air duct 211 between them. This allows the impeller 22 to be conveniently arranged in the air duct 211. The first housing 2101 at least partially forms the volute tongue 215 of the volute 21.

[0123] In some embodiments, the first housing 2101 and / or the second housing 2102 are adapted to define a fourth noise reduction cavity. The fourth noise reduction cavity is connected to the air duct 211 through a fourth noise reduction hole. Sound waves in the air duct 211 can enter the fourth noise reduction cavity through the fourth noise reduction hole. The sound waves can resonate in the fourth noise reduction cavity, thereby consuming the energy in the sound waves and playing a noise reduction role.

[0124] In some examples, a cover is provided on the outside of the first housing 2101, and a fourth noise reduction cavity is defined between the cover and the first housing 2101. A fourth noise reduction hole is provided on the first housing 2101, and the fourth noise reduction hole connects the fourth noise reduction cavity and the air duct 211 so that the sound waves in the air duct 211 can enter the fourth noise reduction cavity through the fourth noise reduction hole. The sound waves will resonate in the fourth noise reduction cavity to consume the energy of the sound waves, thereby playing a noise reduction role.

[0125] In some embodiments, the inner side of the first shell 2101 is provided with a cover, and the cover and the first shell 2101 define a fourth noise reduction cavity. The cover is provided with a fourth noise reduction hole, and the fourth noise reduction hole communicates the fourth noise reduction cavity and the air duct 211, so that the sound waves in the air duct 211 can enter the fourth noise reduction cavity through the fourth noise reduction hole, and the sound waves resonate in the fourth noise reduction cavity to consume the energy of the sound waves, thereby achieving the noise reduction effect.

[0126] In some embodiments, the inner side or the outer side of the second shell 2102 is provided with a cover, and the cover and the second shell 2102 define a fourth noise reduction cavity.

[0127] In some embodiments of the present application, the first shell 2101 is mechanically connected with the partition 17, and the second shell 2102 is integrally formed with the partition 17, so as to facilitate the disassembly and installation of the first shell 2101 and the second shell 2102, and further facilitate the arrangement of the wind wheel 22 in the air duct 211.

[0128] In some embodiments of the present application, the noise reduction principles of the first noise reduction cavity 711, the second noise reduction cavity, the third noise reduction cavity 172 and the fourth noise reduction cavity are the same, and here the first noise reduction cavity 711, the second noise reduction cavity, the third noise reduction cavity 172 and the fourth noise reduction cavity are collectively referred to as a noise reduction cavity, and the first noise reduction hole 712, the second noise reduction hole, the third noise reduction hole and the fourth noise reduction hole are collectively referred to as a noise reduction hole. By designing the hole cross-sectional area S of a single noise reduction hole, the depth L of the noise reduction hole and the number x of noise reduction holes communicating with a single noise reduction cavity, a better noise reduction effect can be achieved.

[0129] Specifically, here a plurality of noise reduction cavities form a complete sound absorption structure, that is, a plurality of first noise reduction cavities 711 form a sound absorption structure, a plurality of second noise reduction cavities form a sound absorption structure, a plurality of third noise reduction cavities 172 form a sound absorption structure, and a plurality of fourth noise reduction cavities form a sound absorption structure. The acoustic impedance Z of the sound absorption structure satisfies:

[0130] wherein Z HH represents the acoustic impedance of a single noise reduction cavity, and n represents the ordinal number of the noise reduction cavity. The acoustic impedance Z of the above-mentioned single noise reduction cavity satisfies: HH

[0131]

[0132] wherein the volume of the noise reduction cavity is V, the hole cross-sectional area of a single noise reduction hole is S, the inner side surface area of the opening side of the noise reduction cavity is s ca , the depth of the noise reduction hole is L, the number of noise reduction holes communicating with a single noise reduction cavity is x, and the thickness of the volute wall is l u . ​

[0133] j represents the imaginary part of a complex number, j = sqrt(-1), p0 represents the air density, c0 represents the sound speed in air, ω represents the noise circular frequency, and η represents the air dynamic viscosity.

[0134] A represents the surface area of the surface on which the noise reduction cavity is arranged. For example, for the first noise reduction cavity 711, A represents the surface area of the surface of the flow guide 60 on which the first noise reduction hole 712 is arranged. For the second noise reduction cavity, A represents the surface area of the surface of the first air duct wall 216 on which the second noise reduction cavity is arranged; for the third noise reduction cavity 172, A represents the surface area of the surface of the partition 17 on which the third noise reduction cavity 172 is arranged, and for the fourth noise reduction cavity, A represents the surface area of the surface of the first shell 2101 and / or the second shell 2102 on which the fourth noise reduction cavity is arranged.

[0135] p ca , c ca , and k ca represent the density, sound speed, and wave number of air in the noise reduction cavity, respectively, k ap , Ψ va , and Ψ ha represent the wave number, viscosity term, and thermal term of the circular annular hole under narrow acoustic, γ represents the specific heat of air, δ represents the sound mass correction coefficient, and τ represents the sound capacity correction coefficient.

[0136] The normal incidence sound absorption rate α of the sound absorption structure can be calculated by the following formula:

[0137]

[0138] Through data simulation, it can be obtained that for a certain frequency sound, by taking values of the hole cross-sectional area S of a single noise reduction hole of the noise reduction cavity, the depth L of the noise reduction hole, and the number x of noise reduction holes communicating with a single noise reduction cavity, a larger incident sound absorption rate α can be obtained, and thus the effective rate of noise reduction of the sound absorption structure is higher.

[0139] In addition, the volume V of the noise reduction cavity, the hole cross-sectional area S of a single noise reduction hole, the surface area S ca inside the opening side of the noise reduction cavity, and the number x of noise reduction holes communicating with a single noise reduction cavity can be taken within the following ranges to effectively reduce the noise of 400 Hz-2000 Hz.

[0140] 500mm 3 ≤ V ≤ 64000mm 3

[0141] 1.44mm 2 ≤ S ≤ 100mm 2

[0142] 100mm 2 ≦ S ca ≦ 1600mm2

[0143] 1≤x≤9

[0144] For the volute 21 wall thickness l u The depth L of the noise reduction hole, the volume V of the noise reduction cavity, and the hole cross-sectional area S of the single noise reduction hole can follow the following formula to effectively reduce the noise of 400hz-2000hz.

[0145] l u ≦L≦V / S ca *0.5

[0146] Other configurations and operations of the ducted air conditioner according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0147] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, "a plurality of" means two or more. In the description of the present application, the first feature "above" or "below" the second feature can include the first and second features directly contacting each other, or can include the first and second features not directly contacting each other but contacting each other through another feature therebetween.

[0148] In the description of the present application, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0149] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0150] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0151] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A ducted air conditioner characterized by comprising: The application relates to an air conditioner, which comprises the following parts: an outer shell defining a fan cavity and a heat exchange cavity arranged in a transverse direction, the outer shell having an air inlet and an air outlet, the air inlet being communicated with the fan cavity, and the air outlet being communicated with the heat exchange cavity; a fan assembly arranged in the fan cavity; a heat exchanger arranged in the heat exchange cavity; a flow guide arranged in the heat exchange cavity, the flow guide being located between the air outlet side of the heat exchanger and the air outlet in the air flow direction, the flow guide being provided with a first noise reduction structure, the first noise reduction structure comprising a first noise reduction cavity and a first noise reduction hole, the first noise reduction hole being communicated with the first noise reduction cavity and the heat exchange cavity.

2. The duct type air conditioner according to claim 1, wherein The cross-sectional shape of the flow guide is airfoil-shaped.

3. The duct type air conditioner according to claim 1, wherein The length direction of the flow guide extends along the length direction of the air outlet, and the width direction of the flow guide extends from the heat exchanger to the air outlet. The two sides of the flow guide in the thickness direction are respectively provided with a first flow guide surface and a second flow guide surface, one end of the flow guide in the width direction is provided with a first transition surface, and the other end is provided with a second transition surface, one end of the first flow guide surface and one end of the second flow guide surface are connected through the first transition surface, and the other end of the first flow guide surface and the other end of the second flow guide surface are connected through the second transition surface.

4. The duct type air conditioner according to claim 3, wherein The first transition surface and the second transition surface are both circular arc surfaces, and the radius of the first transition surface is greater than that of the second transition surface, the first transition surface is close to the air outlet side of the heat exchanger, and the second transition surface is close to the air outlet.

5. The duct type air conditioner according to claim 3, wherein The flow guide comprises: a first flow guide plate and a second flow guide plate arranged oppositely and connected, the first flow guide surface is located on the side of the first flow guide plate away from the second flow guide plate, and the second flow guide surface is located on the side of the second flow guide plate away from the first flow guide plate; the first noise reduction cavity is located between the first flow guide plate and the second flow guide plate, and the first noise reduction hole is arranged on the first flow guide plate and / or the second flow guide plate.

6. The ducted air conditioner according to claim 5, wherein A separation rib is arranged between the first flow guide plate and the second flow guide plate, so as to separate the space between the first flow guide plate and the second flow guide plate into a plurality of first noise reduction cavities.

7. The ducted air conditioner according to claim 6, wherein The number of the separation ribs is plural, the plural separation ribs are arranged in the length direction or the width direction of the flow guide, or the plural separation ribs comprise a first rib and a second rib, and the first rib and the second rib are arranged in a cross manner.

8. The ducted air conditioner according to claim 5, wherein One of the first flow guide plate and the second flow guide plate is provided with a clamping groove at one end in a first direction, and the other one is provided with a clamping convex extending along the first direction at one end in the first direction, and the clamping convex is matched with the clamping groove.

9. The ducted air conditioner according to claim 8, wherein The number of the clamping grooves is plural, and the plural clamping grooves are arranged in a second direction, and the second direction is arranged at an angle with the first direction.

10. The ducted air conditioner according to claim 9, wherein The first direction is the width direction of the flow guide, and the second direction is the length direction of the flow guide.

11. The ducted air conditioner according to claim 8, wherein One end of the first guide plate in the first direction has a limiting protrusion extending towards the second guide plate, the clamping groove is arranged on the limiting protrusion, and the first noise reduction hole is arranged on the first guide plate.

12. The ducted air conditioner according to claim 8, wherein The first guide plate has a first connecting hole, the second guide plate has a second connecting hole, the first guide plate and the second guide plate are connected by a fastener, the fastener extends along a third direction and is arranged through the first connecting hole and the second connecting hole, and the third direction is arranged at an angle with respect to the first direction.

13. The ducted air conditioner according to claim 12, wherein The third direction is the thickness direction of the guide member.

14. The ducted air conditioner according to claim 12, wherein The first noise reduction hole is arranged on the first guide plate, one side of the first guide plate towards the second guide plate is provided with a fixing column, the first connecting hole is a blind hole and is arranged on the fixing column.

15. The ducted air conditioner according to claim 14, wherein A separation rib is arranged between the first guide plate and the second guide plate to separate the space between the first guide plate and the second guide plate into a plurality of first noise reduction cavities. The peripheral wall of the fixing column is connected with the separation rib, a part of the second guide plate extends towards the first guide plate to form a positioning protrusion on one side of the second guide plate towards the first guide plate and to form a mounting recess on one side of the second guide plate away from the first guide plate, the positioning protrusion is inserted into the space surrounded by the separation rib and abuts against the fixing column, and one end of the fastener is accommodated in the mounting recess.

16. The ducted air conditioner according to claim 12, wherein The fastener is close to the other end of the first guide plate and the second guide plate in the first direction.

17. The ducted air conditioner according to any one of claims 1-16, wherein, The guide member is rotatably arranged in the heat exchange cavity.

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