Air duct system of air cooler

Abstract

The utility model provides an air cooler air duct system which comprises a volute, a volute cavity is formed in the volute, an impeller is arranged in the volute cavity, the axis of the impeller is parallel to the horizontal plane, an air inlet is formed in the side wall of the volute cavity, an evaporator is arranged at the air inlet end of the air inlet, the upper end of the volute cavity is open, and an air outlet is formed in the upper end of the volute cavity. An air outlet is formed in the impeller, a top plate is arranged on the air outlet, three air outlet holes which are communicated with the air outlet and used for discharging cold air are formed in the top plate and are arranged at equal intervals in the direction perpendicular to the axis of the impeller, the diameters of the air outlet holes are the same, and mounting parts used for mounting air pipes are arranged on the air outlet holes. According to the air cooler air duct system, the structure of the cold air duct is optimally designed, through reasonable layout, porous, uniform and stable air outlet can be achieved, the air noise is low, the using effect is good, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mobile air conditioner, in particular to a cold -blast machine air duct system. BACKGROUND

[0002] Mobile air conditioner because its convenient and easy to use, independent strong become in recent years popular air conditioner. Compared with traditional split air conditioner, its simple installation, need not pipeline threading, convenient to carry migration, more suitable for renting, temporary residence, or space limited place. Mobile air conditioner usually adopts compression type refrigeration principle, simple structure, heat exchanger and fan and other components are integrated in one, convenient operation, and possess multiple functions, such as timing, temperature regulation, wind speed regulation, satisfy the diversified needs of users.

[0003] The existing mobile air conditioner usually only has one cold air outlet, can only install one air pipe, and cannot meet the use of multiple people and multiple angles, and has great use limitations. UTILITY MODEL CONTENTS

[0004] Technical problem to be solved

[0005] The utility model to solve the technical problem provides a cold -blast machine air duct system with multiple air outlets, and the air is uniform, stable, and multiple people and multiple angles can be used.

[0006] Technical scheme for solving the problem

[0007] The utility model provides a cold -blast machine air duct system, including volute 1, the volute 1 is shaped in volute 10, the volute 10 is equipped with impeller 3, the axis of the impeller 3 is parallel to horizontal plane, the lateral wall of the volute 10 is equipped with air inlet 1a, the air inlet 1a is equipped with evaporator in air inlet end, the upper end of the volute 10 is open and forms air outlet 1b, the air outlet 1b is equipped with top plate 2, the top plate 2 is equipped with the air outlet hole for the air outlet 1b intercommunication and is used for the cold -blast air outlet, the air outlet hole is three and is equidistantly arranged along the axis direction perpendicular to the impeller 3, and the diameter of each air outlet hole is identical, the air outlet hole is equipped with the mounting portion for installing air pipe.

[0008] Further, the axis of the air outlet hole is perpendicular to the horizontal plane.

[0009] Further, the air outlet hole includes first air outlet hole 21a, second air outlet hole 21b and third air outlet hole 21c arranged in sequence, the inner wall both ends of the open end of the volute 10 are equipped with first protrusion 11 and second protrusion 12 respectively, the first protrusion 12 is located in the lower end of the first air outlet 21a, and the second protrusion 12 is located in the lower end of the third air outlet 21c.

[0010] Further, the first protrusion 11 blocks part of the first air outlet hole 21a in the horizontal direction, and the second protrusion 12 blocks all of the third air outlet hole 21c and part of the second air outlet hole 21b in the horizontal direction.

[0011] Further, the first protrusion 11 blocks the first air outlet hole in the horizontal direction by an amount greater than or equal to 20% and less than or equal to 50%.

[0012] Further, the second protrusion 12 blocks the second air outlet hole 21b in the horizontal direction by an amount less than 50%.

[0013] Further, the first protrusion 11 is an inwardly convex arc surface.

[0014] Further, the axis of the first air outlet hole 21a is tangent to the side wall of the first protrusion 11.

[0015] Further, the top surface of the second protrusion 12 is an inclined surface, and the angle between the top surface and the horizontal plane is greater than or equal to 17 degrees and less than or equal to 21 degrees.

[0016] Further, the inner walls on both sides of the open end of the upper end of the cochlea are provided with inwardly inclined air guide surfaces 10a.

[0017] Further, the angle between the air guide surface and the horizontal plane is greater than or equal to 72 degrees and less than or equal to 78 degrees.

[0018] Further, the angle between the air guide surface and the horizontal plane is greater than or equal to 75 degrees and less than or equal to 76 degrees.

[0019] Further, the angle between the top surface of the second protrusion 12 and the horizontal plane is 20 degrees.

[0020] Further, the axis of the impeller is located between the axes of the second air outlet hole 21b and the third air outlet hole 21c.

[0021] Further, the distance between the axis of the impeller and the axis of the second air outlet hole 21b is 12%-20% of the diameter of the air outlet hole.

[0022] Further, the inner wall of the cochlea 10 comprises a first arc surface 101, a second arc surface 102, a third arc surface 103, a fourth arc surface 104 and a fifth arc surface 105 connected in sequence and tangent to each other, the end of the fifth arc surface is provided with an inclined surface 106, the end of the inclined surface is provided with a sixth arc surface 107, the first arc surface 101 is inwardly convex and forms a first protrusion 11, and the arc length ratio of the first arc surface 101, the second arc surface 102, the third arc surface 103, the fourth arc surface 104 and the fifth arc surface 105 corresponds to the central angle of (1-1.2):(0.44-0.5):(1.4-1.52):(1.45-1.6):1.

[0023] Advantages

[0024] The cold air machine air duct system adopts a plurality of air outlet hole structures, can cooperate with an air outlet pipe, realizes simultaneous use of multiple people and multiple angles, and has good use effect and experience; the raised shielding structure is arranged, airflow distribution is effectively guided, airflow resistance is reduced, air supply efficiency of the air duct system is improved, uniformity of air outlet of each air outlet hole is ensured, air outlet stability is high, wind noise is low, and use experience is good; the inclined air guide surface is arranged at the open end of the cochlea, perfect butt joint of the cochlea and the air outlet is realized, wind resistance is reduced, a neck-in structure is formed at the same time, wind pressure can be increased, and outlet velocity can be increased; the cold air machine air duct system performs structural optimization design on a cold air duct, through reasonable layout, can realize uniform and stable air outlet of multiple holes, wind noise is low, use effect is good, and the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the cold air machine air duct system of the utility model;

[0026] Figure 2 It is an explosion structural schematic view of the cold air machine air duct system of the utility model;

[0027] Figure 3 It is a sectional view of the cold air machine air duct system of the utility model;

[0028] Figure 4 It is another angle sectional view of the cold air machine air duct system of the utility model;

[0029] Figure 5 It is another plane sectional view of the cold air machine air duct system of the utility model. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below with reference to the drawings.

[0031] Reference Figures 1-5The utility model provides a cold -blast machine air duct system, including the casing, is provided with volute 1 in the casing, this volute 1 sets up in the upper end position of casing, is formed with volute cavity 10 in volute 1, is equipped with impeller 3 in volute cavity 10, the axis of impeller 3 is parallel to horizontal plane, the end of volute 1 is fixed with motor, the motor is connected with impeller 3, is used for driving impeller 3 rotation, and then produce airflow, form wind, is equipped with air inlet 1a in the lateral wall of volute cavity 10, this air inlet 1a is located in the end of back to the motor, is equipped with evaporator in the air inlet end of air inlet 1a, is used for the airflow that passes through cooling, forms cold wind, the upper end of volute cavity 10 is open, forms air outlet 1b, is equipped with top plate 2 on air outlet 1b, when assembling, top plate is fixed in the top of casing, and volute is located in the casing, is equipped with air outlet hole on top plate 2, air outlet hole is connected with air outlet 1b, is used for cold wind air outlet, in the application, air outlet hole is three, three air outlet holes are sequentially arranged along the axis direction perpendicular to impeller 3, simultaneously, the diameter of three air outlet holes is identical, and the distance between adjacent two air outlet holes is identical, in the embodiment, the axis of air outlet hole is perpendicular to horizontal plane, therefore, the connecting line of three air outlet holes is horizontal line perpendicular to the axis of impeller 3, is equipped with mounting portion for installing air pipe on air outlet hole, specifically, is equipped with annular protrusion on the edge of air outlet hole, the annular protrusion is coaxial with air outlet hole, is equipped with clamping groove on the inner wall of annular protrusion, the clamping groove is at least two, and is uniformly distributed in the circumferential direction, the cross section of clamping groove is L-shaped, can install air pipe, air pipe can be bent 360 °, and then realize the alignment of arbitrary air outlet direction and angle, can be used by multiple people and multiple angles simultaneously, and the use flexibility is high, in the application, the air volume and air pressure (wind speed) of three air outlet holes are identical.

[0032] In the application, the volute 1 is formed by splicing the left and right volute half shells, the positioning structure is arranged between the contact surfaces of the two volute half shells, so that the volute half shells are quickly and accurately positioned in the radial direction, and the volute half shells are quickly assembled, the positioning structure is a positioning protrusion and a positioning groove, for example, a pin shaft and a pin hole, etc.; one chamber structure is arranged on each of the left and right volute half shells, and the two chambers form a complete volute cavity after splicing, in the embodiment, the contact surfaces of the two volute half shells are parallel to the connecting line of the air outlet holes, the motor is arranged on the end surface of one of the volute half shells, and the air inlet is arranged on the end of the other volute half shell for air inlet; the volute adopts a split assembly structure, which reduces the processing difficulty and manufacturing cost, facilitates assembly and maintenance, and reduces the use and maintenance cost.

[0033] Specifically, the air outlet hole comprises a first air outlet hole 21a, a second air outlet hole 21b and a third air outlet hole 21c arranged in sequence, the air volume and air speed of the first, second and third air outlet holes are the same, the first protrusion 11 and the second protrusion 12 are respectively arranged at the two ends of the inner wall of the open end (upper end) of the cochlea 10, in this application, one end of the first air outlet hole 21a is the left end, and one end of the third air outlet hole 21c is the right end, the first protrusion 11 and the second protrusion 12 are respectively arranged at the left and right ends of the cochlea, specifically, the first protrusion 11 is arranged on the side close to the air inlet 1a, that is, the left end, and the second protrusion 12 is arranged on the side close to the third air outlet hole, that is, the right end, the wedge-shaped channel is formed between the two protrusions and the cochlea side wall, which can effectively guide the airflow distribution, reduce airflow resistance, reduce noise and improve the air supply efficiency of the air duct system.

[0034] The first protrusion 11 is located at the lower end of the first air outlet hole 21a, and the second protrusion 12 is located at the lower end of the third air outlet hole 21c, as viewed from the vertical direction, that is, from top to bottom or from bottom to top, the first protrusion 11 blocks part of the first air outlet hole 21a in the horizontal direction, and the second protrusion 12 blocks the entire third air outlet hole 21c and part of the second air outlet hole 21b in the horizontal direction.

[0035] In this embodiment, the blocking amount of the first air outlet hole is greater than or equal to 20% and less than or equal to 50%, that is, in the horizontal direction, the first protrusion 11 blocks 20%-50% of the diameter of the first air outlet hole, and the blocking is at the left end of the first air outlet hole 21a; the blocking amount of the second protrusion 12 to the second air outlet hole 21b in the horizontal direction is less than 50%, that is, in the horizontal direction, the second protrusion 12 completely blocks the third air outlet hole 21c, and partially blocks the right end of the second air outlet hole, in this embodiment, the blocking amount of the second air outlet hole 21b is 10%.

[0036] The first protrusion 11 is an inwardly convex arc surface tangent to the inner wall of the cochlea. In this embodiment, the axis of the first air outlet hole 21a is tangent to the side wall of the first arc-shaped protrusion, and the axis is arranged vertically. The top surface of the second protrusion 12 is an inclined surface. In this application, the angle a between the top surface of the second protrusion 12 and the horizontal plane is greater than or equal to 17 degrees and less than or equal to 21 degrees, and preferably, the angle a between the top surface of the second protrusion 12 and the horizontal plane is 19 degrees. The axis of the impeller is located between the axes of the second air outlet hole 21b and the third air outlet hole 21c, that is, the axis of the second air outlet hole 21b is located on the left side of the axis of the impeller. In this embodiment, the distance between the axis of the impeller and the axis of the second air outlet hole 21b is 12%-20% of the diameter of the air outlet hole. The above design ensures smooth airflow during operation of the entire air duct system, effectively avoids noise caused by excessive wind speed, and enhances the stability of the air duct, reduces energy loss, and achieves the goal of energy saving and emission reduction. At the same time, it can ensure the uniformity of the air outlet of each air outlet hole, has good air outlet effect, high air outlet stability, and good user experience.

[0037] Specifically, the inner wall of the cochlea 10 includes a first arc surface 101, a second arc surface 102, a third arc surface 103, a fourth arc surface 104, and a fifth arc surface 105 connected in sequence and tangent to each other. An inclined surface 106 is provided at the end of the fifth arc surface 106, which is located above the impeller and constitutes a second protrusion to form a barrier. A sixth arc surface 107 is provided at the end of the inclined surface 107, which is in contact with the bottom surface of the top plate 2 to guide the air flow. The first arc surface 101 is convex inwardly and forms a first protrusion 11. The center of the first arc surface 101 is located outside the cochlea 10, while the centers of the second arc surface 102 to the fifth arc surface 105 are located inside the cochlea 10. The ratio of the arc length of the first arc surface 101, the second arc surface 102, the third arc surface 103, the fourth arc surface 104, and the fifth arc surface 105 to the corresponding central angle is (1-1.2):(0.44-0.5):(1.4-1.52):(1.45-1.6):1. In this embodiment, the ratio of the radii of the first arc surface 101, the second arc surface 102, the third arc surface 103, the fourth arc surface 104, and the fifth arc surface 105 is (1.2-1.3):(1.5-1.6):(1.2-1.3):(1.1-1.2):1. The design of the cochlea 10 optimizes the airflow between the components, ensures the air outlet efficiency, helps to reduce the airflow resistance, and ensures the uniformity of the air outlet of each air outlet hole.

[0038] Meanwhile, in the application, the inner wall on both sides of the open end of the cochlea is provided with a wind guide surface 10a, which is arranged on the long side of the open end of the cochlea, and the non-arc surface (short side), the wind guide surface 10a is an inwardly inclined inclined surface, and the inclined angles of the wind guide surfaces 10a on both sides are the same, thereby forming a necked structure, which can increase the wind pressure, and at the same time, can realize good transition with the air outlet hole, form air guide, and reduce wind noise; the included angle between the wind guide surface 10a and the horizontal plane is greater than or equal to 72 degrees and less than or equal to 78 degrees, and preferably 76 degrees.

[0039] The cold air machine air duct system adopts a plurality of air outlet hole structures, can cooperate with an air outlet pipe, realizes simultaneous use of multiple people and multiple angles, has good use effect and experience; the raised shielding structure is arranged, airflow distribution is effectively guided, airflow resistance is reduced, air supply efficiency of the air duct system is improved, uniformity of air outlet of each air outlet hole can be ensured, air outlet stability is high, wind noise is low, and use experience is good; the inclined wind guide surface is arranged at the open end of the cochlea, perfect butt joint of the cochlea and the air outlet is realized, wind resistance is reduced, a necked structure is formed at the same time, wind pressure can be increased, and outlet velocity can be increased; the cold air machine air duct system optimizes structure of a cold air duct, through reasonable layout, can realize uniform and stable air outlet of multiple holes, wind noise is low, use effect is good, and the application range is wide.

[0040] The above only describes preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, without departing from the technical principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the utility model.

Claims

1. An air duct system for a cold air machine, the system comprising: The air conditioner comprises a volute, a volute cavity formed in the volute, an impeller provided in the volute cavity, an axis of the impeller being parallel to a horizontal plane, an air inlet being formed in a side wall of the volute cavity, an evaporator being provided at an air inlet end of the air inlet, an upper end of the volute cavity being open and forming an air outlet, a top plate being provided on the air outlet, a plurality of air outlet holes being formed in the top plate and being in communication with the air outlet and being used for cold air outlet, the air outlet holes being equidistantly arranged along a direction perpendicular to the axis of the impeller, diameters of the air outlet holes being the same, and a mounting portion being provided on the air outlet holes and being used for mounting an air pipe.

2. The air duct system for a cold air machine as recited in claim 1, wherein: The axis of the air outlet hole is perpendicular to the horizontal plane.

3. The air duct system for a cold air machine of claim 1, wherein: The air outlet hole comprises a first air outlet hole, a second air outlet hole and a third air outlet hole arranged in sequence, first and second protrusions being respectively provided at two ends of an inner wall of the open end of the volute cavity, the first protrusion being located at a lower end of the first air outlet hole, and the second protrusion being located at a lower end of the third air outlet hole.

4. The air duct system of claim 3, wherein: The first protrusion blocks part of the first air outlet hole in the horizontal direction, and the second protrusion blocks all of the third air outlet hole and part of the second air outlet hole in the horizontal direction.

5. The air duct system of claim 3, wherein: The first protrusion is an inwardly convex arc surface.

6. The air duct system of claim 5, wherein: The axis of the first air outlet hole is tangent to a side wall of the first protrusion.

7. The air duct system of claim 3, wherein: A top surface of the second protrusion is an inclined surface, and an included angle between the top surface and the horizontal plane is greater than or equal to 17 degrees and less than or equal to 21 degrees.

8. The air duct system of claim 1, wherein: Two side inner walls of the open end of the upper end of the volute cavity are provided with inwardly inclined air guide surfaces.

9. The air duct system of claim 8, wherein: An included angle between the air guide surfaces and the horizontal plane is greater than or equal to 72 degrees and less than or equal to 78 degrees.

10. The air duct system for a cold air machine of claim 3, wherein: The axis of the impeller is located between the axes of the second air outlet hole and the third air outlet hole.

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