Air pipe joint and mobile air conditioner

Abstract

The utility model discloses an air pipe joint and a mobile air conditioner, and relates to the technical field of mobile air conditioners, the air pipe joint comprises a peripheral wall, an air inlet and an air outlet are respectively formed at two ends of the peripheral wall, the peripheral wall comprises a first inclined wall, a second inclined wall, a third inclined wall and a fourth inclined wall which are sequentially arranged around an axis parallel to a first direction, four corners of the peripheral wall are respectively provided with a first transition wall, a second transition wall, a third transition wall and a fourth transition wall, the first transition wall is connected with the first inclined wall and the third inclined wall, the second transition wall is connected with the second inclined wall and the third inclined wall, the third transition wall is connected with the second inclined wall and the fourth inclined wall, and the fourth transition wall is connected with the fourth inclined wall and the first inclined wall; the first transition wall, the second transition wall, the third transition wall and the fourth transition wall are arranged to be smooth curved surfaces, so that the whole air pipe joint is smooth, the pressure distribution of the air pipe joint is relatively smooth, no stress concentration area exists in the air pipe joint, and the internal stress is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile air conditioners, in particular to an air duct joint and a mobile air conditioner. Background Art

[0002] With the continuous improvement of living standards, people have placed higher demands on the overall performance and appearance of portable air conditioners, including cooling performance. Currently, the inner wall of the air duct joint of a mobile air conditioner is too curved or bent. When the internal fluid passes through the air duct joint, the pressure distribution of the fluid on the air duct joint is uneven, and stress is concentrated in certain areas. The pressure acting on the air duct joint is high, and the fluid pressure is reduced, resulting in a decrease in the outflow flow rate of the air duct joint and the loss of fluid energy. Utility Model Content

[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 an air duct joint that, through an optimized design, achieves a smoother transition from the air inlet to the air outlet, reduces bending, and makes the joint smoother overall. The pressure distribution in the joint is relatively smoother, with no internal stress concentration areas, a reduced positive pressure differential, more uniform internal stress, and an improved appearance.

[0004] The utility model also provides a mobile air conditioner with the air duct joint.

[0005] According to the first embodiment of the present invention, the air duct joint includes: a peripheral wall, an air inlet and an air outlet are formed at both ends respectively, and a first direction is defined as a direction perpendicular to the air inlet and the air outlet, the peripheral wall includes a first inclined wall, a second inclined wall, a third inclined wall and a fourth inclined wall arranged in sequence around an axis parallel to the first direction, the first inclined wall and the second inclined wall are arranged relative to each other along the second direction, the third inclined wall and the fourth inclined wall are arranged relative to each other along the third direction, the second direction and the third direction are respectively perpendicular to the first direction, the second direction and the third direction are perpendicular to each other, from the air inlet to the air outlet, The distance from the first slanted wall to the second slanted wall gradually increases, and the distance from the third slanted wall to the fourth slanted wall gradually increases; wherein, the four corners of the peripheral wall are respectively provided with a first transition wall, a second transition wall, a third transition wall and a fourth transition wall, the first transition wall connects the first slanted wall and the third slanted wall, the second transition wall connects the second slanted wall and the third slanted wall, the third transition wall connects the second slanted wall and the fourth slanted wall, and the fourth transition wall connects the fourth slanted wall and the first slanted wall, and the first transition wall, the second transition wall, the third transition wall and the fourth transition wall are set to smooth curved surfaces.

[0006] The air duct joint according to the embodiment of the present invention has at least the following beneficial effects: by setting the first inclined wall, the second inclined wall, the third inclined wall and the fourth inclined wall, the local bending or curvature of the air duct joint is reduced, so that the air duct joint can filter more smoothly from the air inlet to the air outlet. At the same time, the first transition wall, the second transition wall, the third transition wall and the fourth transition wall are set at the four corners of the air duct joint. The first transition wall, the second transition wall, the third transition wall and the fourth transition wall are smooth curved surfaces, which can smoothly transition the four corners of the air duct joint, further improving the smoothness of the air duct joint. When the fluid passes through the air duct joint, the fluid flows along the inclined wall and the transition wall without blocking the flow of the fluid, so that the pressure distribution of the fluid on the air duct joint is more uniform, the stress concentration phenomenon in some large curvature areas is reduced or disappears, the pressure acting on the air duct joint is smaller, the fluid pressure inside the air duct joint is reduced, the energy loss is reduced, the outlet flow rate is increased, the overall air output is increased, the air outlet effect is improved, and the appearance of the air duct joint is also improved.

[0007] According to some embodiments of the present invention, the air inlet is set to be square, the width of the air inlet along the second direction is greater than the width of the air inlet along the third direction, the air outlet is set to be elliptical or circular, and the minimum width of the air outlet is greater than the width of the air inlet along the second direction.

[0008] According to some embodiments of the present invention, the inclination angle of the first inclined wall is greater than the inclination angle of the third inclined wall and the inclination angle of the fourth inclined wall, and the inclination angle of the second inclined wall is greater than the inclination angle of the third inclined wall and the inclination angle of the fourth inclined wall.

[0009] According to some embodiments of the present invention, along the diagonal direction of the square, the width of the air inlet is greater than the width of the air outlet.

[0010] According to some embodiments of the present invention, from the air inlet to the air outlet, the distance from the first transition wall to the third transition wall gradually increases, and the distance from the second transition wall to the fourth transition wall gradually increases.

[0011] According to some embodiments of the present invention, the first sloping wall, the second sloping wall, the third sloping wall and the fourth sloping wall are configured as smooth curved surfaces.

[0012] A mobile air conditioner according to a second embodiment of the present invention includes the air duct joint according to the first embodiment.

[0013] The mobile air conditioner according to the embodiment of the present invention comprises the air duct joint of the embodiment of the first aspect, and thus has at least the above-mentioned beneficial effects, which will not be described in detail here.

[0014] According to some embodiments of the present invention, the mobile air conditioner includes a panel and an exhaust duct, the air inlet is connected to the panel, and the air outlet is connected to the exhaust duct.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic structural diagram of an air duct joint in some embodiments of the present invention;

[0018] Figure 2 It is a top view of the air duct joint of some embodiments of the present invention;

[0019] Figure 3 for Figure 2 Cross-section at AA in the middle;

[0020] Figure 4 This is a front view of the air duct joint of some embodiments of the present invention;

[0021] Figure 5 It is a side view of the air duct joint of some embodiments of the present invention;

[0022] Figure 6 The pressure distribution diagram of the inner surface of the fluid simulation of the air duct joint in the related art;

[0023] Figure 7 This is a diagram of the fluid simulation inner surface pressure distribution of the air duct joint of this embodiment;

[0024] Figure 8 The internal streamline distribution diagram of the fluid simulation of the air duct joint in the related art;

[0025] Figure 9 This is a fluid simulation internal streamline distribution diagram of the air duct joint of this embodiment;

[0026] Figure 10 The fluid simulation outlet flow distribution diagram of the air duct joint in the related art;

[0027] Figure 11 This is a flow distribution diagram of the fluid simulation outlet of the air duct joint of this embodiment.

[0028] Reference numerals:

[0029] Duct joint 1000;

[0030] Peripheral wall 200 , first slanted wall 210 , second slanted wall 220 , third slanted wall 230 , fourth slanted wall 240 , first transition wall 250 , second transition wall 260 , third transition wall 270 , fourth transition wall 280 ;

[0031] Air inlet 310, air outlet 320;

[0032] A first diagonal line 400 and a second diagonal line 410 . DETAILED DESCRIPTION

[0033] 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.

[0034] Reference Figure 1 and Figure 2 As shown, an air duct joint 1000 provided by an embodiment of the present invention includes a circle of peripheral walls 200. The peripheral walls 200 are arranged around an axis parallel to a first direction. An air inlet 310 and an air outlet 320 are formed at both ends of the peripheral wall 200 along the first direction, respectively. The first direction is perpendicular to the air inlet 310 and the air outlet 320. The peripheral wall 200 includes a first slanted wall 210, a second slanted wall 220, a third slanted wall 230, and a fourth slanted wall 240 arranged in sequence around an axis parallel to the first direction. The first slanted wall 210 and the second slanted wall 220 are arranged opposite to each other along the second direction, and the third slanted wall 230 and the fourth slanted wall 240 are arranged opposite to each other along the third direction. The second direction and the third direction are respectively perpendicular to the first direction. Figure 3 As shown, the distance from the first inclined wall 210 to the second inclined wall 220 is D1. Figure 5 As shown, the distance from the third slanted wall 230 to the fourth slanted wall 240 is D2 , and both D1 and D2 gradually increase from the air inlet 310 to the air outlet 320 .

[0035] Among them, reference Figure 1 and Figure 2 As shown, the four corners of the peripheral wall 200 are respectively provided with a first transition wall 250, a second transition wall 260, a third transition wall 270 and a fourth transition wall 280, the first transition wall 250 connects the first inclined wall 210 and the third inclined wall 230, the second transition wall 260 connects the second inclined wall 220 and the third inclined wall 230, the third transition wall 270 connects the second inclined wall 220 and the fourth inclined wall 240, and the fourth transition wall 280 connects the fourth inclined wall 240 and the first inclined wall 210, and the first transition wall 250, the second transition wall 260, the third transition wall 270 and the fourth transition wall 280 are set as smooth curved surfaces.

[0036] In this embodiment, by setting the first inclined wall 210, the second inclined wall 220, the third inclined wall 230 and the fourth inclined wall 240, the local bending or curvature of the air duct joint 1000 is reduced, so that the air duct joint 1000 can filter more smoothly from the air inlet 310 to the air outlet 320. At the same time, the first transition wall 250, the second transition wall 260, the third transition wall 270 and the fourth transition wall 280 are set at the four corners of the air duct joint 1000. The first transition wall 250, the second transition wall 260, the third transition wall 270 and the fourth transition wall 280 are smooth curved surfaces, which can be smooth. The four corners of the transition duct joint 1000 further improve the smoothness of the duct joint 1000. When the fluid passes through the duct joint 1000, the fluid flows along the inclined wall and the transition wall, and will not block the flow of the fluid. The pressure distribution of the fluid on the duct joint 1000 can be more uniform, and the stress concentration phenomenon in some large curvature areas is reduced or disappears, and the fluid pressure is reduced, thereby resulting in reduced fluid energy loss, increased outflow flow of the duct joint 1000, and improved air outlet effect. In addition, the duct joint 1000 is relatively smooth, which also improves the appearance of the duct joint 1000.

[0037] Reference Figure 2 As shown, in some embodiments, the air inlet 310 is set to a square shape, the width of the air inlet 310 along the second direction is greater than the width of the air inlet 310 along the third direction, and the air outlet 320 is set to an elliptical or circular shape. It can be understood that the minimum width of the air outlet 320 is greater than the width of the air inlet 310 along the second direction.

[0038] Reference Figure 3 and Figure 5 As shown, in some embodiments, the inclination angle of the first slanted wall 210 is greater than the inclination angle of the third slanted wall 230 and the inclination angle of the fourth slanted wall 240, and the inclination angle of the second slanted wall 220 is greater than the inclination angle of the third slanted wall 230 and the inclination angle of the fourth slanted wall 240. When the air outlet 320 is circular, the difference between the width of the air outlet 320 and the width of the air outlet 320 along the second direction is larger than the difference between the width of the air outlet 320 and the width of the air outlet 320 along the third direction. The inclination angles of the first slanted wall 210 and the second slanted wall 220 are set to be larger, which is conducive to the transition of the first slanted wall 210 and the second slanted wall 220 from the air inlet 310 to the air outlet 320, and the transition is smoother.

[0039] Reference Figure 2As shown, in some embodiments, along the diagonal direction of the square of the air inlet 310, the width of the air inlet 310 is greater than the width of the air outlet 320. It should be noted that since the air inlet 310 is square, the air inlet 310 has two diagonals, specifically a first diagonal 400 and a second diagonal 410. In the direction of the first diagonal 400, the width of the air inlet 310 is greater than the width of the air outlet 320, and in the direction of the second diagonal 410, the width of the air inlet 310 is greater than the width of the air outlet 320. Such an arrangement allows the width of the peripheral wall 200 along the first diagonal line 400 or the width along the second diagonal line 410 to gradually decrease when the peripheral wall 200 transitions from the air inlet 310 to the air outlet 320 at the four corner positions. Since the width of the peripheral wall 200 in the second direction and the third direction gradually increases, such an arrangement allows the cross-sectional area of ​​the peripheral wall 200 to change relatively little from the air inlet 310 to the air outlet 320, and does not affect the flow rate of the fluid.

[0040] In some embodiments, the distance from the first transition wall 250 to the third transition wall 270 gradually increases, and the distance from the second transition wall 260 to the fourth transition wall 280 gradually increases from the air inlet 310 to the air outlet 320. Specifically, the first transition wall 250 and the third transition wall 270 are respectively located at opposite ends of a first diagonal line 400, and the second transition wall 260 and the fourth transition wall 280 are respectively located at opposite ends of a second diagonal line 410. The distance from the first transition wall 250 to the third transition wall 270 refers to the distance along the first diagonal line 400 of the air inlet 310, and the distance from the second transition wall 260 to the fourth transition wall 280 refers to the distance along the second diagonal line 410 of the air inlet 310.

[0041] In some embodiments, the first slanted wall 210 , the second slanted wall 220 , the third slanted wall 230 and the fourth slanted wall 240 are configured as smooth curved surfaces, so that the transition of the peripheral wall 200 from the air inlet 310 to the air outlet 320 is smoother, reducing the curvature of the peripheral wall 200 .

[0042] Reference Figure 6 The figure shows the simulated inner surface pressure distribution of a duct joint in the related art. The four corners of the duct joint have large surface bends, resulting in higher pressure at these corners. Black areas represent higher pressure, while gray areas represent lower pressure. The black areas at the four corners are larger in the figure, indicating that the pressure at these corners is higher in the related art duct joint.

[0043] Reference Figure 7 As shown, it is the fluid simulation inner surface pressure distribution diagram of the duct joint 1000 in this embodiment. Through the optimized design, the surface bending at the four corners of the duct joint 1000 is smaller, the area of ​​the black area at the corners is reduced, and the pressure is lower.

[0044] Reference Figure 8 As shown in FIG, it is the fluid simulation internal streamline distribution diagram of the air duct joint in the related art. Figure 9 FIG. 1 is a diagram showing the internal streamline distribution of the fluid simulation of the air duct joint 1000 in this embodiment. Figure 10 The figure shows the fluid simulation outlet flow distribution diagram of the air duct joint in the related art. Figure 11 , which is a fluid simulation outlet flow distribution diagram of the air duct joint 1000 in this embodiment.

[0045] This embodiment optimizes and improves the interior of the duct connector 1000, creating a more natural, rounded curve at the four corners. Analysis of fluid simulation results shows that the optimized and improved pressure distribution within the duct connector 1000 is relatively smooth, with no internal stress concentration areas. The positive pressure differential is reduced, resulting in more uniform internal forces. The internal channel wall curvature of the duct connector 1000 is less, resulting in a smoother overall curve. The optimized design eliminates noticeable curvature in the internal fluid streamlines, reduces total viscous dissipation, and increases outflow rate, indicating reduced fluid energy loss and improved heat output efficiency. Furthermore, the air duct exhaust volume is increased. This optimization improves the overall cooling performance of the mobile air conditioner product. The optimized design features a lower outlet channel slope and smoother transitions, meeting functional requirements while simplifying the mold release structure, saving manufacturing costs and improving injection molding efficiency. Furthermore, by optimizing the product structure of the outlet channel, the functional requirements are met while simplifying the mold release structure, saving manufacturing costs and improving injection molding efficiency.

[0046] The present invention further provides a mobile air conditioner, which includes the air duct connector 1000 of the above embodiment, and thus has the above beneficial effects, which will not be described in detail here.

[0047] In some embodiments, the mobile air conditioner further includes a panel and an exhaust duct, with the air inlet 310 connected to the panel and the air outlet 320 connected to the exhaust duct. In other words, the duct connector 1000 is used to connect the panel and the exhaust duct. When the air outlet 320 is square and the air inlet 310 is oval, the air inlet 310 and the exhaust duct are installed with a close fit, ensuring a better seal and enhancing the versatility of the duct connector.

[0048] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0049] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0050] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians 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.

[0051] 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 scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Duct joint, characterized in that: include: A peripheral wall, with an air inlet and an air outlet formed at both ends respectively, defining a first direction as a direction perpendicular to the air inlet and the air outlet, the peripheral wall comprising a first oblique wall, a second oblique wall, a third oblique wall, and a fourth oblique wall arranged in sequence around an axis parallel to the first direction, the first oblique wall and the second oblique wall being arranged opposite to each other along the second direction, the third oblique wall and the fourth oblique wall being arranged opposite to each other along the third direction, the second direction and the third direction being perpendicular to the first direction respectively, the second direction and the third direction being perpendicular to each other, and the distance from the first oblique wall to the second oblique wall gradually increasing from the air inlet to the air outlet, and the distance from the third oblique wall to the fourth oblique wall gradually increasing; In which, the four corners of the peripheral wall are respectively provided with a first transition wall, a second transition wall, a third transition wall and a fourth transition wall, the first transition wall connects the first inclined wall and the third inclined wall, the second transition wall connects the second inclined wall and the third inclined wall, the third transition wall connects the second inclined wall and the fourth inclined wall, and the fourth transition wall connects the fourth inclined wall and the first inclined wall, and the first transition wall, the second transition wall, the third transition wall and the fourth transition wall are set as smooth curved surfaces.

2. The air duct joint according to claim 1, characterized in that: The air inlet is set to be square, the width of the air inlet along the second direction is greater than the width of the air inlet along the third direction, the air outlet is set to be elliptical or circular, and the minimum width of the air outlet is greater than the width of the air inlet along the second direction.

3. The air duct joint according to claim 2, characterized in that: The inclination angle of the first inclined wall is greater than the inclination angles of the third inclined wall and the fourth inclined wall, and the inclination angle of the second inclined wall is greater than the inclination angles of the third inclined wall and the fourth inclined wall.

4. The air duct joint according to claim 2, characterized in that: Along the diagonal direction of the square, the width of the air inlet is greater than the width of the air outlet.

5. The air duct joint according to claim 4, characterized in that: From the air inlet to the air outlet, the distance from the first transition wall to the third transition wall gradually increases, and the distance from the second transition wall to the fourth transition wall gradually increases.

6. The air duct joint according to claim 1, characterized in that: The first slanted wall, the second slanted wall, the third slanted wall, and the fourth slanted wall are configured as smooth curved surfaces.

7. Mobile air conditioner, characterized in that, The invention comprises the air duct joint according to any one of claims 1 to 6.

8. The mobile air conditioner according to claim 7, characterized in that: The mobile air conditioner includes a panel and an exhaust pipe, the air inlet is connected to the panel, and the air outlet is connected to the exhaust pipe.

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