Duct units and air conditioners

Abstract

The present invention discloses a duct unit and an air conditioner, which belong to the technical field of air-conditioning equipment. The duct unit includes a shell, a volute and a heat exchanger. The shell is provided with an air inlet, an air outlet and a chamber; the volute is provided with an air duct and a wind wheel, the air inlet of the volute is provided on at least one side along the axial direction of the wind wheel, and the air outlet is provided on the side wall of the volute along the circumference of the wind wheel; the heat exchanger is arranged around the volute along the circumference of the wind wheel, so that the airflow generated by the wind wheel drive enters the chamber from the air inlet, and can enter the air inlet after passing through the heat exchanger, and is blown out from the air outlet and the air outlet in turn after being guided by the volute; the volute and the wind wheel are arranged horizontally, so that the axial direction of the volute is the same as the axial direction of the wind wheel and both are arranged perpendicular to the bottom wall of the shell, which is conducive to maximizing the diameter of the wind wheel, improving the wind speed and the anti-static pressure capability, making the air supply range larger, realizing wide-area air supply, and effectively improving comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to an air duct unit and an air conditioner. Background Art

[0002] In related technologies, household central air conditioners usually use ducted indoor units, the air duct adopts a blowing structure, and the air outlet is connected to the air outlet panel. However, there is a problem of narrow air supply width, resulting in a smaller air outlet coverage area, which easily causes temperature differences and reduces comfort. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a ducted air conditioner with a higher air outlet speed and static pressure resistance, capable of achieving wide-area air supply to increase the air supply range, making the air outlet more uniform and more comfortable.

[0004] An embodiment of the present invention further provides an air conditioner including the above-mentioned duct air conditioner.

[0005] The duct unit according to the first embodiment of the present invention includes:

[0006] A housing having an air inlet, an air outlet, and a chamber communicating with the air inlet and the air outlet;

[0007] a volute disposed in the chamber, the volute being provided with an air duct and a wind wheel disposed in the air duct, the volute being provided with an air inlet communicating with the air duct on at least one side along the axial direction of the wind wheel, the volute being provided with an air outlet along a circumferential sidewall of the wind wheel, the air outlet being connected to the air outlet, the axial direction of the volute being the same as the axial direction of the wind wheel and both being perpendicular to the bottom wall of the housing;

[0008] The heat exchanger is arranged in the chamber and is arranged around the volute along the circumference of the wind wheel, so that the wind wheel drives the air flow to enter the chamber through the air inlet and enter the air inlet through the heat exchanger.

[0009] The duct air conditioner according to the embodiment of the present invention has at least the following beneficial effects:

[0010] A volute and a heat exchanger are installed in the shell of the duct machine. The shell is provided with an air inlet and an air outlet. By arranging an air duct and a wind wheel in the volute, the air inlet of the volute is arranged on at least one side along the axial direction of the wind wheel and is connected with the air duct, and an air outlet is arranged on the side wall of the volute along the circumference of the wind wheel; the heat exchanger is arranged around the volute along the circumference of the wind wheel, so that the airflow generated by the wind wheel drive enters the chamber from the air inlet, and can enter the air inlet after passing through the heat exchanger, and is blown out from the air outlet and the air outlet in turn after being guided by the volute; the volute and the wind wheel are arranged horizontally, so that the axial direction of the volute is the same as the axial direction of the wind wheel and both are arranged perpendicular to the bottom wall of the shell, which is conducive to maximizing the diameter of the wind wheel, improving the wind speed and anti-static pressure ability, making the air supply range larger, and being able to achieve wide-area air supply, effectively improving comfort.

[0011] According to some embodiments of the present invention, the volute is located at the air outlet and is provided with a first side wall, a second side wall and a third side wall at intervals along the circumference of the wind wheel; a first air outlet channel connected to the air duct is formed between the first side wall and the second side wall, a second air outlet channel connected to the air duct is formed between the second side wall and the third side wall, and a third air outlet channel connected to the air duct is provided on the wall surface of the second side wall.

[0012] According to some embodiments of the present invention, the volute is further provided with a fourth side wall extending along the circumference of the wind wheel, the first side wall is connected to one end of the fourth side wall to form a volute tongue, and the third side wall is connected to the other end of the fourth side wall.

[0013] According to some embodiments of the present invention, ports of the first air outlet channel and the second air outlet channel are located in the same plane, and an angle β1 between a tangent line of a wall of the first side wall away from the end of the air duct and the plane satisfies: β1≤30°.

[0014] According to some embodiments of the present invention, the ports of the first air outlet channel and the second air outlet channel are located in the same plane, and the angle β2 between the wall tangent of the third side wall away from the end of the air duct and the plane satisfies: β2≤30°.

[0015] According to some embodiments of the present invention, the second side wall includes a first wall portion and a second wall portion, the first wall portion and the second wall portion are transitionally connected via a bending portion, and the first air outlet channel is formed between the first wall portion and the first side wall; the second air outlet channel is formed between the second wall portion and the third side wall.

[0016] According to some embodiments of the present invention, the third air outlet channel includes a plurality of vents formed on the second side wall, and the plurality of vents are spaced apart and extend from the first wall portion to the second wall portion.

[0017] According to some embodiments of the present invention, the second side wall is connected to the volute via a rotating structure, and the rotating structure is connected to the bending portion, so that the first wall portion and the second wall portion can rotate around the rotating structure.

[0018] According to some embodiments of the present invention, an angle β3 between a tangent line of a wall of the first side wall away from the end of the air duct and a tangent line of a wall of the first wall portion away from the end of the air duct satisfies: 15°≤β3≤60°.

[0019] According to some embodiments of the present invention, an angle β4 between a tangent line of the third side wall away from the end of the air duct and a tangent line of the second wall away from the end of the air duct satisfies: 15°≤β4≤60°.

[0020] According to some embodiments of the present invention, the wind wheel is a centrifugal wind wheel.

[0021] According to some embodiments of the present invention, the heat exchanger is bent to form at least two straight sections, and the straight sections are arranged around the volute along the circumference of the wind wheel.

[0022] An air conditioner according to a second embodiment of the present invention includes the duct air conditioner according to the first embodiment.

[0023] The air conditioner according to the embodiment of the present invention has at least the following beneficial effects:

[0024] The air conditioner adopts the duct unit of the embodiment, and the volute and the wind wheel of the duct unit are arranged horizontally, so that the axial direction of the volute is the same as the axial direction of the wind wheel and both are arranged perpendicular to the bottom wall of the shell, which is conducive to maximizing the diameter of the wind wheel, improving the wind speed and static pressure resistance, making the air supply range larger, and being able to achieve wide-area air supply, effectively improving comfort.

[0025] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 is a schematic cross-sectional structural diagram of an air duct assembly according to an embodiment of the present invention;

[0028] Figure 2 1 is a schematic diagram of a partial structure of a volute in one embodiment of the present invention;

[0029] Figure 3 1 is a schematic cross-sectional view of a ducted air conditioner according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the overall structure of a ducted air conditioner according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the assembly structure of an air duct unit according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] Scroll 100; first sidewall 110; second sidewall 120; first wall portion 121; second wall portion 122; vent 123; bent portion 124; rotating shaft 125; third sidewall 130; fourth sidewall 140; air duct 150; air outlet 160; first air outlet channel 161; second air outlet channel 162; third air outlet channel 163; reference surface 170;

[0034] Wind wheel 200;

[0035] Housing 300; chamber 310; air outlet 320;

[0036] Heat exchanger 400;

[0037] Air outlet panel 500;

[0038] Connecting member 600; air guide groove 610;

[0039] Air duct assembly 1000;

[0040] Duct air conditioner 2000. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, it should be noted that terms such as setting, installing, and connecting should be understood in a broad sense, and technical personnel in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0046] In the prior art, household central air conditioners typically use a low-static-pressure ducted indoor unit. The ductwork in this unit adopts a blower-type structure, and the air outlet is usually connected to an engineering panel. For aesthetic reasons, the engineering panel is usually designed as a narrow, long grille. However, the engineering panel lacks left and right airflow-directing sweeping blades, resulting in a narrow airflow width. Areas outside the air outlet experience a lack of airflow, resulting in significant temperature differences and poor comfort. The air outlet can also be equipped with an optional electric air outlet panel. Although this electric panel has left and right airflow-directing sweeping blades, the unit's low airflow velocity, small sweeping blades, and limited rotation angle of the sweeping blades themselves still pose a significant problem, leaving the airflow width narrow.

[0047] The air duct assembly 1000 of the embodiment of the present invention and the air duct machine 2000 using the air duct assembly 1000 have the effect of wide-area air supply, can effectively increase the air supply range, thereby improving the uniformity and comfort of air output, and enhancing the user experience.

[0048] refer to Figures 1 to 2 The air duct assembly 1000 according to an embodiment of the present invention is applicable to a household central air conditioner, specifically to an air duct unit 2000. The air duct assembly 1000 is described below with reference to a specific example.

[0049] Reference Figure 1 As shown, the air duct assembly 1000 provided in an embodiment of the present invention includes a volute 100, an air duct 150 is provided in the volute 100, a wind wheel 200 is provided in the air duct 150, the volute 100 is provided with an air inlet and an air outlet 160, and the wind wheel 200 is driven to rotate by a motor (not shown in the drawings). The motor can be arranged on the outside of the volute 100 and connected to the wind wheel 200 through a drive shaft; when the wind wheel 200 rotates, it drives the airflow into the air duct 150 from the air inlet, and is sent out from the air outlet 160 after being guided by the air duct 150 in the volute 100, thereby blowing toward the indoor environment.

[0050] Specifically, Figure 1The figure shows a schematic cross-sectional view of the volute 100. In the embodiment, a volute-shaped air duct 150 is formed in the volute 100, and the wind wheel 200 is rotatably mounted in the air duct 150. The air inlet is provided on the side surface of the volute 100 along the axial direction of the wind wheel 200. The structure of the air inlet is not shown in the figure. The air outlet 160 is provided on the side surface of the volute 100 along the circumference of the wind wheel 200. In other words, the air flow enters the volute 100 from a single side along the axial direction of the wind wheel 200 and exits from the side wall of the volute 100 along the circumference of the wind wheel 200. Of course, air inlets can also be provided on both sides of the volute 100 along the axial direction of the wind wheel 200. The air flow enters the air duct 150 from the air inlets on both sides of the volute 100, thereby achieving double-sided air intake.

[0051] It can be understood that the volute duct 150 has a guiding effect. Under the driving force of the wind wheel 200, the air flow is sucked into the volute duct 150 from the air inlet. The volute duct 150 can collect and guide the air flow leaving the wind wheel 200. Figure 1 As shown, the volute duct 150 gradually expands along the circumference of the wind wheel 200, causing the airflow to flow along the volute duct 150 toward the air outlet. By converting some kinetic energy into pressure energy, this helps increase the wind pressure. It should be noted that the wind wheel 200 in this embodiment is a centrifugal wind wheel. The centrifugal wind wheel and the volute 100 cooperate to form a centrifugal fan. Compared with a cross-flow fan, the centrifugal fan can provide higher static pressure and stronger air delivery capacity.

[0052] Reference Figure 1 As shown, in some embodiments, the volute 100 is provided with a first side wall 110, a second side wall 120, and a third side wall 130 along the circumferential sidewall of the wind rotor 200. The first side wall 110, the second side wall 120, and the third side wall 130 are spaced apart along the circumference and can also be understood as the first circumferential wall, the second circumferential wall, and the third circumferential wall. Along the circumference of the wind rotor 200, a first air outlet channel 161 is formed between the first side wall 110 and the second side wall 120, and a second air outlet channel 162 is formed between the second side wall 120 and the third side wall 130. In addition, a third air outlet channel 163 is formed on the wall surface of the second side wall 120. The first air outlet channel 161, the second air outlet channel 162, and the third air outlet channel 163 are all connected to the air duct 150. In other words, the volute 100 is provided with three air outlet channels, which can realize air supply from multiple air outlet channels simultaneously, which is beneficial to increase the air supply range and make the air output more uniform.

[0053] It should be noted that Figure 1 In the embodiment shown, only the side wall of the volute 100 along the circumference of the wind wheel 200 is shown, and the side wall of the volute 100 along the axial direction of the wind wheel 200 is not shown. Figure 1As shown, it can be understood that the circumferential sidewalls of the volute 100 further include a fourth sidewall 140. The fourth sidewall 140 is disposed circumferentially around the wind rotor 200 to form a closed inner wall, which serves as a flow guide and can also be understood as the flow guide inner wall of the volute 100. Specifically, in the circumferential direction of the wind rotor 200, one end of the fourth sidewall 140 is connected to the first sidewall 110, and the other end of the fourth sidewall 140 is connected to the third sidewall 130. The first sidewall 110, the second sidewall 120, the third sidewall 130, and the fourth sidewall 140 enclose and define an air duct 150.

[0054] Reference Figure 1 As shown, it can be understood that the first side wall 110, the third side wall 130 and the fourth side wall 140 in the embodiment are an integrated structure, and a segmented structure can also be adopted, which is not limited in detail. Among them, the first side wall 110 and the third side wall 130 can be understood as the two side walls of the air outlet 160 of the volute 100 along the width direction. The first side wall 110 and the third side wall 130 are bent and extended toward the outside of the volute 100, so that the air outlet 160 of the volute 100 gradually increases along the width direction, as shown in FIG. Figure 1 The second sidewall 120 is located between the first sidewall 110 and the third sidewall 130 , and the air outlet 160 is divided by the second sidewall 120 into a first air outlet channel 161 and a second air outlet channel 162 .

[0055] It can be understood that the wall surface of the first side wall 110 and the wall surface of the second side wall 120 have a guiding effect on the wind sent out along the first air outlet channel 161, and the wall surface of the second side wall 120 and the wall surface of the third side wall 130 have a guiding effect on the wind sent out along the second air outlet channel 162; Figure 1 In the illustrated embodiment, the first air outlet channel 161 is inclined to discharge air toward the left side, and the second air outlet channel 162 is inclined to discharge air toward the right side. The air outlet directions of the first air outlet channel 161 and the second air outlet channel 162 can be adjusted by changing the wall bending angles of the first side wall 110, the second side wall 120 and the third side wall 130.

[0056] Reference Figure 2 As shown, Figure 2A partial structural diagram of the air outlet 160 of the volute 100 is shown. It can be understood that, in the embodiment, the air outlet 160 of the volute 100 is generally rectangular in shape, the second side wall 120 is located in the middle of the air outlet 160, the left side of the second side wall 120 is a first air outlet channel 161, and the right side of the second side wall 120 is a second air outlet channel 162. A plurality of vents 123 are provided on the wall surface of the second side wall 120, allowing air to exit the wall surface of the second side wall 120, thereby forming a third air outlet channel 163. In other words, the air outlet 160 of the volute 100 is formed with the first air outlet channel 161, the second air outlet channel 162, and the third air outlet channel 163. The above three air outlet channels can all discharge air for air delivery, providing a wider air outlet angle.

[0057] It can be understood that the airflow is separated and diffused to both sides by the second side wall 120, so that the airflow is supplied along the first air outlet channel 161 and the second air outlet channel 162 respectively. The air supply angle is wider, and part of the airflow will pass through the wall surface of the second side wall 120, thereby ensuring a wider air supply range, making the air volume distribution more uniform, and also facilitating the adjustment of the wind speed distribution within the width range, making the wind speed more uniform. The air duct assembly 1000 of the embodiment is suitable for household central air conditioners and can replace traditional wind-guiding structures such as sweeping blades. It can achieve wide-area air supply, reduce the occurrence of obvious temperature differences, effectively improve comfort, and provide users with a better experience.

[0058] Reference Figure 1 As shown, in the embodiment, the first side wall 110 is connected to the fourth side wall 140 to form a volute tongue. It can be understood that the volute tongue is located at the air outlet 160. The volute tongue can effectively prevent the airflow from circulating in the volute 100, and the volute tongue cooperates with the second side wall 120 to define a first air outlet channel 161. The volute tongue can further guide the airflow diffused along the first air outlet channel 161, and can form a wider air outlet angle, which is conducive to increasing the air outlet range.

[0059] Reference Figure 1 and Figure 2 As shown, it should be noted that, in some embodiments, the second side wall 120 is bent to form a first wall portion 121 and a second wall portion 122, and the first wall portion 121 and the second wall portion 122 are transitionally connected by a bent portion 124, that is, the second side wall 120 is divided into two wall sections, and the airflow is guided toward both sides through the two wall sections. Figure 1As shown, the first wall portion 121 extends obliquely toward the first side wall 110, while the second wall portion 122 extends obliquely toward the third side wall 130. A curved portion 124 connects the first and second wall portions 121, 122, and is arc-shaped. A first air outlet channel 161 is formed between the first wall portion 121 and the first side wall 110, while a second air outlet channel 162 is formed between the second wall portion 122 and the third side wall 130. When airflow passes through the air duct 150 and is directed to the air outlet 160, it is split at the curved portion 124, with some airflow flowing to the first air outlet channel 161, some to the second air outlet channel 162, and some to the third air outlet channel 163. This provides a wider air supply range and more uniform air volume and velocity distribution.

[0060] Reference Figure 2 As shown, it can be understood that a plurality of air holes 123 are provided on the wall surface of the second side wall 120, and the plurality of air holes 123 are spaced apart along the height direction of the air outlet 160, each air hole 123 is roughly in the shape of a long strip, and each air hole 123 extends from the first wall portion 121 to the second wall portion 122, so that the air holes 123 are distributed in the bending portion 124, and the bending portion 124 is adjacent to the air duct 150, and the plurality of air holes 123 cooperate to form a third air outlet channel 163. When the air flow blows toward the second side wall 120 through the air duct 150, the air flow is diverted by the first wall portion 121 and the second wall portion 122 at the bending portion 124, so that the air flow is diffused to both sides. At the same time, a part of the air flow is directly discharged through the air vent 123, so that the air outlet range of the third air outlet channel 163 can cover the area of the second side wall 120 facing away from the air duct 150, and cooperate with the air outlet range of the first air outlet channel 161 and the second air outlet channel 162 to achieve the purpose of wide-area air supply.

[0061] It should be noted that the form of the vent hole 123 is not limited to Figure 2 In the structure shown in the embodiment, for example, a plurality of circular through holes may be provided on the wall surface of the second side wall 120 , and the plurality of circular through holes may be evenly distributed on the bending portion 124 ; the vent holes 123 may also adopt a grid-like structure, which is not further limited.

[0062] Reference Figure 1 and Figure 2 As shown, in some embodiments, the second side wall 120 is movably connected to the volute 100, and a rotating structure is provided at the bent portion 124, so that the angles of the first wall portion 121 and the second wall portion 122 can be adjusted by rotation. Figure 2As shown, the first wall portion 121 and the second wall portion 122 are integrally formed, with a fixed angle between the first wall portion 121 and the second wall portion 122. The rotation structure includes a rotation shaft 125 provided on the second side wall 120 and an axial hole provided on the volute 100 corresponding to the rotation shaft 125. The rotation shaft 125 is located at the bend 124. The rotation shaft 125 is provided on both sides of the second side wall 120 along the height direction. The rotation shaft 125 cooperates with the axial hole, so that the second side wall 120 can rotate around the rotation shaft 125, thereby adjusting the angle of the first wall portion 121 and the second wall portion 122. It is understood that the rotation shaft 125 can also be provided on the volute 100, and axial holes cooperating with the rotation shaft 125 are provided on both sides of the second side wall 120 at the bend 124. The specific details are not limited thereto.

[0063] Reference Figure 1 As shown, it can be understood that the first sidewall 110 and the third sidewall 130 are fixed sidewalls, and the second sidewall 120 is a rotatable sidewall. When the first sidewall 110 and the third sidewall 130 are fixed, the width of the air outlet 160 of the volute 100 remains unchanged. To ensure that the air outlet 160 has a wider air outlet range, the embodiment of the present invention optimizes the angles of the first sidewall 110, the second sidewall 120, and the third sidewall 130 to meet the requirement of wide-area air outlet.

[0064] Specifically, refer to Figure 1 As shown, the first air outlet channel 161 and the second air outlet channel 162 are directed toward different directions for air discharge, and the ports of the first air outlet channel 161 and the second air outlet channel 162 are located on the same plane, making it easier for the volute 100 to connect to the air outlet panel 500 for air supply. Figure 1As shown, the plane can also be understood as the plane where the air outlet 160 of the volute 100 is located. Using the above plane as the reference plane 170, the angle β1 between the wall tangent of the first side wall 110 and the reference plane 170, and the angle β2 between the wall tangent of the third side wall 130 and the reference plane 170 satisfy: β1≤30° and β2≤30°, that is, the angle between the wall tangent of the first side wall 110 and the reference plane 170 is less than or equal to 30°, and the angle between the wall tangent of the third side wall 130 and the reference plane 170 is less than or equal to 30°. It should be noted that the wall tangent line of the first side wall 110 should be understood as the wall tangent line of the first side wall 110 at the location of the end away from the air duct 150. The end of the first side wall 110 away from the air duct 150 is the terminal end of the first side wall 110. The wall tangent line of the third side wall 130 should be understood as the wall tangent line of the third side wall 130 at the location of the end away from the air duct 150. The end of the wall of the third side wall 130 away from the air duct 150 is the terminal end of the third side wall 130. It should be noted that the angle β1 and the angle β2 can be set to the same angle, for example, the angles of the angle β1 and the angle β2 can be set to 25°, 30°, etc.; the angle β1 and the angle β2 can also be set to different angles, for example, the angle of the angle β1 is set to 20° and the angle of the angle β2 is set to 30°. The specific setting depends on the actual application scenario and is not limited to this.

[0065] It is understandable that the smaller the angle between the tangent line of the first side wall 110 and the reference surface 170, the more the wall surface of the first side wall 110 is tilted toward the left to guide the air, and the larger the air outlet angle is. The smaller the angle between the tangent line of the third side wall 130 and the reference surface 170, the more the wall surface of the third side wall 130 is tilted toward the right to guide the air, and the larger the air outlet angle is. Therefore, when the wall surfaces of the first side wall 110 and the third side wall 130 meet the above-mentioned angle range, the first side wall 110 and the third side wall 130 can be tilted toward both sides of the width direction respectively, the opening of the air outlet 160 is also larger, and the air outlet angle is wider; and when the volute 100 and the air outlet duct are installed and applied, the outlet air can be effectively prevented from directly impacting the wall surfaces of the first side wall 110 and the third side wall 130, reducing wind noise and improving the stability of the overall structure.

[0066] Continue to refer to Figure 1As shown, it can be understood that a relatively fixed angle is formed between the first wall portion 121 and the second wall portion 122 of the second side wall 120, the first wall portion 121 cooperates with the first side wall 110 to form a first air outlet channel 161, and the second wall portion 122 cooperates with the third side wall 130 to form a second air outlet channel 162. When the angles between the first side wall 110 and the third side wall 130 remain fixed, by rotating the second side wall 120, the angle β3 between the wall tangent of the first side wall 110 away from the end of the air duct 150 and the wall tangent of the first wall portion 121 away from the air duct 150, as well as the angle β4 between the wall tangent of the third side wall 130 away from the end of the air duct 150 and the wall tangent of the second wall portion 122 away from the air duct 150 can be adjusted; wherein, the angle between the wall tangent of the first side wall 110 and the wall tangent of the first wall portion 121 can be understood as the air supply diffusion angle β3 of the first air outlet channel 161, and the angle between the wall tangent of the third side wall 130 and the wall tangent of the second wall portion 122 can be understood as the air supply diffusion angle β4 of the second air outlet channel 162.

[0067] Specifically, the air diffusion angle β3 of the first air outlet channel 161 and the air diffusion angle β4 of the second air outlet channel 162 are both in the range of 15°-60°. That is, the air diffusion angles of the first air outlet channel 161 and the second air outlet channel 162 are both adjustable within the range of 15°-60°. It can be understood that the larger the air diffusion angle, the greater the air flow rate. The air diffusion angle β3 and the air diffusion angle β4 can be adjusted by rotating the second side wall 120 to further control the distribution of the air output. It should be noted that the air diffusion angle β3 and the air diffusion angle β4 can have the same angle or different angles, and can be set according to actual use requirements and are not limited here.

[0068] Reference below Figures 3 to 5 The duct air conditioner 2000 according to the embodiment of the present invention is described, and the duct air conditioner 2000 is illustrated by taking a specific example.

[0069] Reference Figure 3 and Figure 4 As shown, the duct unit 2000 of the embodiment includes a housing 300, a chamber 310 is provided in the housing 300, a heat exchanger 400 and the air duct assembly 1000 shown in the above embodiment are installed in the chamber 310, and an air inlet (not shown in the figure) and an air outlet 320 are provided on the housing 300, and both the air inlet and the air outlet 320 are connected to the chamber 310. Figure 4 As shown, the air outlet of the volute 100 is matched with the air outlet 320 so that the volute 100 can supply air through the air outlet 320 of the housing 300. The heat exchanger 400 is disposed outside the volute 100.

[0070] Figure 3The figure shows a cross-sectional view of the ducted air conditioner 2000 from a top view. Figure 4 The figure shows the overall structure of the ducted air conditioner 2000. After being assembled, the volute 100 is arranged horizontally, and the axial direction of the volute 100 and the axial direction of the centrifugal impeller 200 are both perpendicular to the bottom wall of the housing 300 (not shown in the figure). Since the ducted air conditioner 2000 is placed horizontally, it can be understood that the axial direction of the volute 100 and the axial direction of the centrifugal impeller 200 are perpendicular to the horizontal plane. The volute 100 is flat in shape, and the air inlet is arranged on the upper side of the volute 100, that is, the air inlet of the volute 100 is arranged upward. The first air outlet channel 161, the second air outlet channel 162 and the third air outlet channel 163 all supply air to the front side of the housing 300. The air inlet is arranged on the rear side of the housing 300, and the air is taken in from the rear side of the housing 300. The air inlet can also be arranged on the lower side of the housing 300, and the air is taken in from the bottom of the housing 300. The air inlet can also be arranged on the rear side and the lower side of the housing 300 at the same time to achieve simultaneous air intake from the rear side and the bottom. The specific details are not further limited. The height of the volute 100 is smaller than the height of the heat exchanger 400. The centrifugal wind wheel 200 uses suction to inhale air from the rear side of the shell 300, so that the air flow can enter the volute 100 from the air inlet after passing through the heat exchanger 400, and after being guided by the air duct 150 in the volute 100, it is blown out from the first air outlet channel 161, the second air outlet channel 162 and the third air outlet channel 163, thereby realizing wide-area air supply. Figure 3 and Figure 4 The arrow shown in the figure is the direction of air flow.

[0071] The specific structure of the air duct assembly 1000 in the embodiment can be found in the above Figure 1 and Figure 2 The description of the illustrated embodiment will not be repeated here. It is understandable that by arranging the volute 100 horizontally, the centrifugal wind wheel 200 is also arranged horizontally, and the axial direction of the centrifugal wind wheel 200 is perpendicular to the horizontal plane. Compared with the installation method in which the axial direction of the centrifugal wind wheel 200 is parallel to the horizontal plane, a larger space can be provided for installing the centrifugal wind wheel 200. In this way, the volute 100 can adopt a centrifugal wind wheel 200 with a larger diameter, so that the diameter of the wind wheel 200 is maximized, which can improve the wind speed and anti-static pressure capability, and the air supply range in the width direction is larger, so that the duct air conditioner 2000 can achieve wide-area air supply, reduce the situation where the temperature difference is obvious, effectively improve comfort, and provide a better user experience.

[0072] Reference Figure 3As shown, in the embodiment, the air outlet 160 of the volute 100 supplies air toward the outside of the housing 300, and the heat exchanger 400 is bent to form three straight sections. The cross-section of the heat exchanger 400 is roughly U-shaped. The three straight sections surround the outside of the volute 100, so that the airflow entering the housing 300 must pass through the heat exchanger 400 for heat exchange before entering the volute 100, ensuring that the air duct air conditioner 2000 has better heat exchange performance. It should be noted that the number of straight sections of the heat exchanger 400 is not limited to three, and can also be bent to form two or more straight sections. For example, two straight sections form a V-shaped heat exchanger 400, so that the heat exchanger 400 can surround the volute 100.

[0073] Reference Figure 5 As shown, the duct air conditioner 2000 is connected to the air outlet panel 500 after assembly, and the width L1 of the air outlet panel 500 is greater than the width L2 between the first side wall 110 and the third side wall 130. The air outlet panel 500 is connected to the shell 300 through a connecting piece 600, and the inner side of the connecting piece 600 defines an air guide groove 610. The first air outlet channel 161, the second air outlet channel 162 and the third air outlet channel 163 of the volute 100 are all connected to the air guide groove 610, so that the air blown out from the first air outlet channel 161, the second air outlet channel 162 and the third air outlet channel 163 enters the air guide groove 610, and then further diffuses in the width direction through the air guide groove 610, thereby obtaining a wider air outlet range and realizing wide-area air supply. It can be understood that the air outlet panel 500 can be understood as a thin air duct, which saves more installation space. A panel can be set on the front side of the air outlet panel 500, which can serve as a decoration. The air outlet width of the panel is greater than the air outlet width of the volute 100, so as to achieve the purpose of wide-area air outlet.

[0074] An embodiment of the present invention further provides an air conditioner that uses the duct air conditioner 2000 of the above embodiment for air supply. The volute 100 and impeller 200 of the duct air conditioner 2000 are arranged horizontally, with the axial direction of the volute 100 aligned with the axial direction of the impeller and both arranged perpendicular to the bottom wall of the housing 300. This facilitates maximizing the diameter of the impeller 200, improving the outlet air velocity and static pressure resistance, and expanding the air supply range, enabling wide-area air supply and effectively improving comfort. For details, please refer to the description of the duct air conditioner 2000 in the above embodiment, which will not be repeated here.

[0075] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. Duct air conditioner, characterized in that, include: A housing having an air inlet, an air outlet, and a chamber communicating with the air inlet and the air outlet; a volute disposed in the chamber, the volute being provided with an air duct and a wind wheel disposed in the air duct, the volute being provided with an air inlet communicating with the air duct on at least one side along the axial direction of the wind wheel, the volute being provided with an air outlet along a circumferential sidewall of the wind wheel, the air outlet being connected to the air outlet, the axial direction of the volute being the same as the axial direction of the wind wheel and both being perpendicular to the bottom wall of the housing; a heat exchanger disposed in the chamber and arranged around the volute along the circumference of the wind wheel, so that the wind wheel drives the air flow to enter the chamber through the air inlet and enter the air inlet through the heat exchanger; The volute is located at the air outlet and is provided with a first side wall, a second side wall and a third side wall at intervals along the circumference of the wind wheel; a first air outlet channel connected to the air duct is formed between the first side wall and the second side wall, a second air outlet channel connected to the air duct is formed between the second side wall and the third side wall, and a third air outlet channel connected to the air duct is opened on the wall surface of the second side wall, the first air outlet channel is inclined to the left to discharge air, and the second air outlet channel is inclined to the right to discharge air; The second side wall includes a first wall portion and a second wall portion, the first wall portion and the second wall portion are transitionally connected by a bending portion, and the first air outlet channel is formed between the first wall portion and the first side wall; the second air outlet channel is formed between the second wall portion and the third side wall; the third air outlet channel includes a plurality of air vents opened on the second side wall, and the plurality of air vents are arranged at intervals and extend from the first wall portion to the second wall portion; the second side wall is connected to the volute through a rotating structure, and the rotating structure is connected to the bending portion, so that the first wall portion and the second wall portion can rotate around the rotating structure.

2. The air duct machine according to claim 1, characterized in that: The volute is further provided with a fourth side wall extending along the circumference of the wind wheel. The first side wall is connected to one end of the fourth side wall to form a volute tongue, and the third side wall is connected to the other end of the fourth side wall.

3. The air duct machine according to claim 1, characterized in that: The ports of the first air outlet channel and the second air outlet channel are located in the same plane, and an angle β1 between a tangent line of the wall of the first side wall away from the end of the air duct and the plane satisfies: β1≤30°.

4. The air duct machine according to claim 1 or 3, characterized in that: The ports of the first air outlet channel and the second air outlet channel are located in the same plane, and an angle β2 between a tangent line of the wall of the third side wall away from the end of the air duct and the plane satisfies: β2≤30°.

5. The air duct machine according to claim 1, characterized in that: An angle β3 between a tangent line of the first side wall away from the end of the air duct and a tangent line of the first wall away from the end of the air duct satisfies: 15°≤β3≤60°.

6. The air duct machine according to claim 5, characterized in that: An angle β4 between a tangent line of the third side wall away from the end of the air duct and a tangent line of the second wall away from the end of the air duct satisfies: 15°≤β4≤60°.

7. The air duct machine according to claim 1, characterized in that: The duct machine also includes an air outlet panel, the air outlet end of the air outlet panel is connected to the first air outlet channel, the second air outlet channel and the third air outlet channel through a connecting piece, and the width of the air outlet panel is greater than the width between the first side wall and the third side wall.

8. The air duct machine according to claim 1, characterized in that: The wind wheel is a centrifugal wind wheel.

9. The air duct machine according to claim 1, characterized in that: The heat exchanger is bent to form at least two straight sections, and the straight sections are arranged around the volute along the circumference of the wind wheel.

10. An air conditioner, characterized in that It includes the air duct machine according to any one of claims 1 to 9.

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