Air duct structure and air curtain machine

Abstract

The utility model discloses an air duct structure and an air curtain machine. The air curtain machine comprises a shell, an air duct structure and a wind wheel structure. The shell is provided with an air inlet and a wind wheel chamber, and the air inlet is communicated with the wind wheel chamber. The air duct structure is provided with an air inlet end and an air outlet end, and the air inlet end communicates with the wind wheel chamber; the air duct structure comprises two air duct side plates which are arranged in a spaced mode. The air duct side plate comprises a protruding part and two connecting parts, the connecting parts are fixed relative to the shell, the protruding part is arranged between the two connecting parts, the protruding part protrudes towards the inner side of the air duct structure, and the protruding part and the connecting parts are in arc smooth transition. The wind wheel structure is rotationally installed in the wind wheel chamber and used for driving air to flow from the air inlet to the air duct structure. According to the air duct side plate, by arranging the protruding parts, air can be guided, transition of air flow is smoother, the air can be prevented from directly colliding with the inner side wall of the air duct side plate, after collision is reduced, vortex generation can be restrained, and therefore noise generation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to an air duct structure and an air curtain machine. Background Art

[0002] In the prior art, the air outlet duct structure of the air curtain machine is generally a straight duct, and the side walls of the duct are all straight walls. When the wind wheel of the air curtain machine throws out the air, the gas flow direction is not straight. The thrown air will collide with the wall surface of the air outlet duct structure, increase the flow resistance, and cause eddy currents, thereby generating a large noise, which causes pedestrians passing near the air curtain machine to feel strong discomfort. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an air duct structure and an air curtain machine to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve its technical problems is:

[0005] The air duct structure is provided with an air inlet end and an air outlet end; the air duct structure comprises:

[0006] The air duct side panel is provided with two air duct side panels, and the two air duct side panels are arranged at intervals; the air duct side panel includes a connecting portion and a protruding portion, and the connecting portion is provided with two, and the protruding portion is arranged between the two connecting portions, and the protruding portion protrudes toward the inner side of the air duct structure, and the protruding portion and the connecting portion have an arc-shaped smooth transition.

[0007] As a further improvement of the above technical solution, the distance between the two air duct side plates gradually decreases from the air inlet end to the air outlet end, so that the width of the air duct structure gradually decreases.

[0008] As a further improvement of the above technical solution, the air duct structure also includes an adjustment component, which includes an adjustment cross bar. The adjustment cross bar is connected to the raised portion, and the position of the adjustment cross bar is adjustable relative to the air duct side panel. The adjustment cross bar makes the position of the raised portion adjustable.

[0009] As a further improvement of the above technical solution, the adjusting cross bar is fixed with an arc-shaped abutting structure, and the arc-shaped abutting structure is provided with an arc-shaped surface, and the arc-shaped surface abuts against the raised portion.

[0010] As a further improvement of the above technical solution, the adjustment component further includes a position driving structure, and the position driving structure includes:

[0011] An adjusting rod, the adjusting rod and the air duct side plate rotate relative to each other;

[0012] An adjustment seat, the adjustment seat being threadedly connected to the adjustment rod, the adjustment seat being movable relative to the air duct side plate in a direction from the air inlet end to the air outlet end; the adjustment seat driving the adjustment crossbar to move;

[0013] An adjusting member is used to drive the adjusting rod to rotate.

[0014] As a further improvement of the above technical solution, the adjustment assembly further includes a guide structure, and the guide structure includes:

[0015] A guide rod, the guide rod is parallel to the adjustment rod and is fixed relative to the adjustment cross rod;

[0016] A guide seat is slidably connected to the guide rod, and the guide seat is relatively fixed relative to the connecting portion.

[0017] As a further improvement of the above technical solution, a reinforcement structure is provided on the outer side of the connecting portion.

[0018] As a further improvement of the above technical solution, the reinforcement structure is a reinforcement rib.

[0019] As a further improvement of the above technical solution, the reinforcement structure is a thickened portion, the thickened portion is fixed to the connecting portion, and the total thickness of the thickened portion and the connecting portion is greater than the thickness of the raised portion.

[0020] Air curtain machine, including:

[0021] A housing, wherein the housing is provided with an air inlet and a wind wheel chamber, and the air inlet is communicated with the wind wheel chamber;

[0022] As in any of the above-mentioned air duct structures, the connecting portion is fixed relative to the housing, and the air inlet end is communicated with the wind wheel chamber;

[0023] A wind wheel structure is rotatably mounted in the wind wheel chamber, and is used to drive air to flow from the air inlet to the air duct structure.

[0024] The beneficial effect of the utility model is that after the air is thrown out by the wind wheel structure, the airflow will move in an arc. By providing the raised portion, the gas can be guided to make the transition of the airflow smoother, and the gas can be prevented from directly colliding with the inner wall of the air duct side plate. After the collision is reduced, the generation of vortexes can be suppressed, thereby reducing the generation of noise.

[0025] When designing a product, software simulation can be first performed to obtain the approximate setting position of the raised portion and the raised height relative to the connecting portion, and then the air duct structure and air curtain machine of this solution can be tested to reduce the error of the software simulation. By adjusting the position of the raised portion to achieve a raised portion structure that roughly achieves the expected effect or even better than the expected effect, the product quality can be improved, and repeated changes in the parameters of the raised portion for proofing and testing can be avoided, thereby reducing the product development cycle.

[0026] The utility model is used in the technical field of ventilation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also derive other design solutions and drawings based on these drawings without inventive effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0029] Figure 2 It is a schematic cross-sectional view of an embodiment of the present utility model.

[0030] In the figure, 001, outer shell; 002, air duct structure; 003, wind wheel structure; 100, air duct side panel; 110, connecting part; 120, raised part; 130, reinforcing structure; 200, adjustment component; 201, adjustment cross bar; 202, arc-shaped abutment structure; 210, position driving structure; 211, adjustment seat; 212, adjustment rod; 213, adjustment member; 220, guide structure; 221, guide rod; 222, guide seat. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0032] Reference Figure 1 and Figure 2 The air curtain machine includes a shell 001, an air duct structure 002 and a wind wheel structure 003 (the wind wheel structure 003 is simplified in the figure).

[0033] The housing 001 is provided with a wind wheel chamber and an air inlet. The air inlet is provided with a plurality of evenly arranged strip hole structures, and the air inlet is connected to the wind wheel chamber.

[0034] The specific structure of the shell 001 is not the main improvement of this solution, so the description of the specific structure of the shell 001 is omitted here. The shell 001 can use the structure of the shell 001 commonly used in the market.

[0035] The air duct structure 002 is provided with an air outlet and an air inlet, and the air outlet is arranged below the air inlet.

[0036] The rotor structure 003 is rotatably mounted within the rotor chamber. A rolling bearing is provided between the rotor structure 003 and the housing 001 to reduce friction between the rotor structure 003 and the housing 001. The rotor structure 003 is used to drive air into the inlet and into the inlet end of the duct structure 002. The airflow ultimately flows out of the outlet end of the duct structure 002, forming a wind curtain. The specific construction of the rotor structure 003 is not a major improvement in this solution, so its detailed description is omitted here. The rotor structure 003 can use the construction of commonly used rotor structures 003 on the market.

[0037] Specifically, the air duct structure 002 includes an air duct side panel 100 and an adjustment assembly 200 .

[0038] The number of the air duct side plates 100 is set to two, and the two air duct side plates 100 are arranged opposite to each other.

[0039] There are two adjustment components 200, and each adjustment component 200 corresponds to the air duct side plate 100. Both adjustment components 200 are arranged outside the air duct structure 002 to prevent the adjustment components 200 from obstructing the airflow inside the air duct structure 002.

[0040] The air duct side plate 100 includes a connecting portion 110 and a raised portion 120. There are two connecting portions 110, each of which is fixedly connected to the housing. The raised portion 120 is disposed between the two connecting portions 110 and protrudes toward the inside of the air duct structure 002. The raised portion 120 and the connecting portion 110 have a smooth arc-shaped transition. Since the airflow moves in an arc after being ejected by the wind wheel structure 003, the provision of the raised portion 120 can guide the airflow, making the transition of the airflow smoother and preventing the air from directly colliding with the inner wall of the air duct side plate 100. The reduced collision can suppress the generation of vortices, thereby reducing the generation of noise.

[0041] The connecting portion 110 of the air duct side plate 100 close to the outside transitions smoothly into an arc shape with the inner wall of the wind wheel chamber.

[0042] Specifically, in this embodiment, the distance between the two air duct side panels 100 gradually decreases from the air inlet end to the air outlet end, so that the width of the air duct structure 002 gradually decreases. The reduction in the width of the air duct structure 002 can increase the wind pressure of the air curtain machine to meet the performance requirements of the air curtain machine.

[0043] Specifically, the adjustment assembly 200 includes an adjustment crossbar 201. The adjustment crossbar 201 extends in a horizontal direction and is connected to the air duct side plate 100 in an adjustable position.

[0044] Specifically, in this embodiment, the adjustment assembly 200 further includes a position driving structure 210 , and the position driving structure 210 includes an adjustment rod 212 , an adjustment seat 211 and an adjustment member 213 .

[0045] Specifically, the adjustment rod 212 extends in the up-down direction and passes through the housing 001, and the adjustment rod 212 is rotatably connected to the housing 001. The adjustment rod 212 is configured as a threaded rod.

[0046] The adjusting member 213 is fixedly connected to the lower end of the adjusting rod 212. In this embodiment, the adjusting member 213 is configured as a butterfly knob structure, and the adjusting member 213 is exposed from the housing 001. The user rotates the adjusting member 213 to drive the adjusting rod 212 to rotate, thereby changing the position of the adjusting crossbar 201. Those skilled in the art can select the specific structure of the adjusting member 213 according to actual needs. In other embodiments, the adjusting member 213 can also be configured as a small rotary motor or other structure to drive the rotation of the adjusting rod 212 through electronic control.

[0047] The adjustment seat 211 is sleeved on the adjustment rod 212 and is threadedly connected to the adjustment rod 212. The adjustment seat 211 is rotatably connected to the adjustment cross bar 201. When the adjustment rod 212 rotates about its own axis, it drives the adjustment seat 211 to move along the axis of the adjustment rod 212, thereby driving the adjustment cross bar 201 to move, thereby adjusting the position of the protrusion 120.

[0048] There is a more optimized solution, in which a pointer is fixed at the end of the adjusting rod 212, and a scale is provided on the outer shell 001. The pointer and the scale can be used to record the amount of rotation of the adjusting rod 212. The positions of different adjusting cross bars 201 are indirectly recorded and indicated by the amount of rotation of the adjusting rod 212, and experimental data such as air volume and noise are recorded accordingly.

[0049] Specifically, in this embodiment, the adjustment crossbar 201 is connected to an arcuate abutment structure 202. The arcuate abutment structure 202 is a horizontally extending long strip-shaped structure. The arcuate abutment structure 202 is provided with an arcuate surface on the side of the air duct side panel 100, and the arcuate surface is used to abut the air duct side panel 100. The arcuate abutment structure 202 is fixedly connected to the adjustment crossbar 201 and abuts the outer wall surface of the air duct side panel 100, so that the arcuate abutment structure 202 can rotate relative to the adjustment crossbar 201. The arcuate abutment structure 202 has a large contact area with the air duct side panel 100, which can limit the shape of the air duct side panel 100 and avoid the uneven arc transition of the protrusion 120 caused by the air duct side panel 100 having too small a contact area with other components. The arcuate abutment structure 202 can also prevent sharp corners from contacting the air duct side panel 100, thereby preventing damage to the air duct side panel 100 during repeated adjustment tests.

[0050] Since the adjustment crossbar 201 abuts against the protrusion 120 via the arc-shaped abutment structure 202, when the adjustment crossbar 201 is adjusted relative to the air duct side plate 100, the position of the protrusion 120 also changes with the position of the adjustment crossbar 201, thereby achieving adjustment of the airflow guiding effect.

[0051] During product design, software simulation can be first performed to obtain the approximate setting position of the raised portion 120 and the raised height relative to the connecting portion 110, and then the air duct structure 002 and the air curtain machine of this solution can be tested to reduce the error of the software simulation. By adjusting the position of the raised portion 120 to achieve a raised portion 120 structure that roughly achieves the expected effect or even better than the expected effect, the product quality can be improved, and repeated changes in the parameters of the raised portion 120 for proofing and testing can be avoided, thereby reducing the product development cycle.

[0052] Moreover, when the air curtain machine is used for a long period of time, parameters such as the air flow speed blown out by the wind wheel structure 003 may change to a certain extent, thereby causing an increase in noise. At this time, the position of the protrusion 120 can be manually adjusted to change the size of the noise, thereby ensuring that the noise generated by the air curtain machine remains at a certain level when used for a long time, avoiding a sharp increase in noise.

[0053] Specifically, in this embodiment, the adjustment assembly 200 further includes a guide structure 220. The guide structure 220 includes a guide rod 221 and a guide seat 222. The guide rod 221 extends in the same direction as the adjustment rod 212, i.e., the guide rod 221 and the adjustment rod 212 are arranged parallel to each other. The guide rod 221 is fixedly connected to the adjustment cross bar 201. Specifically, the guide rod 221 is fixedly connected to the adjustment cross bar 201. The guide seat 222 is sleeved on the guide rod 221, and the guide rod 221 and the guide seat 222 are slidably connected. The guide seat 222 is fixedly connected to the connecting portion 110.

[0054] Specifically, in this embodiment, the number of guide rods 221 and guide seats 222 is set to multiple, and the number of guide rods 221 and guide seats 222 can be specifically designed according to the length of the air curtain. The guide rods 221 and guide seats 222 are provided in a one-to-one correspondence. The ends of the multiple guide seats 222 away from the guide rods 221 are fixedly connected to the housing 001, and the ends of the multiple guide rods 221 away from the guide seats 222 are fixedly connected to the adjustment cross bar 201.

[0055] By providing the guide structure 220 , it is possible to ensure that the adjustment cross bar 201 remains horizontal, thereby preventing the adjustment cross bar 201 from tilting and causing a large error.

[0056] Specifically, in this embodiment, a reinforcement structure 130 is provided on the outer side of the connection portion 110 , and the reinforcement structure 130 is used to strengthen the strength of the connection portion 110 , so that when the position of the adjustment portion changes, the deformation occurs at the protrusion 120 .

[0057] Specifically, in this embodiment, the reinforcing structure 130 is configured as a reinforcing rib, the shape of the reinforcing rib is triangular, the number of the reinforcing ribs is set to multiple, and the multiple reinforcing ribs are arranged at equal intervals along the left and right directions. Those skilled in the art can select the specific structure of the reinforcing structure 130 according to actual needs.

[0058] In other embodiments, the reinforcement structure 130 may also be configured as a thickened portion, and the total thickness of the connection structure and the thickened portion is greater than the total thickness of the protrusion 120. The solution of configuring the reinforcement structure 130 as a thickened portion is not shown in the figure.

[0059] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Air duct structure, characterized by: An air inlet and an air outlet are provided; the air duct structure includes: The air duct side panel is provided with two air duct side panels, and the two air duct side panels are arranged at intervals; the air duct side panel includes a connecting portion and a protruding portion, and the connecting portion is provided with two, and the protruding portion is arranged between the two connecting portions, and the protruding portion protrudes toward the inner side of the air duct structure, and the protruding portion and the connecting portion have an arc-shaped smooth transition.

2. The air duct structure according to claim 1, characterized in that: From the air inlet end to the air outlet end, the distance between the two air duct side plates gradually decreases, so that the width of the air duct structure gradually decreases.

3. The air duct structure according to claim 1, characterized in that: The air duct structure further includes an adjustment component, which includes an adjustment cross bar connected to the protrusion. The adjustment cross bar is adjustable relative to the air duct side plate, and the adjustment cross bar makes the protrusion position adjustable.

4. The air duct structure according to claim 3, characterized in that: The adjusting cross bar is fixed with an arc-shaped abutting structure, and the arc-shaped abutting structure is provided with an arc-shaped surface, and the arc-shaped surface abuts against the raised portion.

5. The air duct structure according to claim 3, characterized in that: The adjustment assembly further includes a position drive structure, which includes: An adjusting rod, the adjusting rod and the air duct side plate rotate relative to each other; An adjustment seat, the adjustment seat being threadedly connected to the adjustment rod, the adjustment seat being movable relative to the air duct side plate in a direction from the air inlet end to the air outlet end; the adjustment seat driving the adjustment crossbar to move; An adjusting member is used to drive the adjusting rod to rotate.

6. The air duct structure according to claim 5, characterized in that: The adjustment assembly further includes a guide structure, which includes: A guide rod, the guide rod is parallel to the adjustment rod and is fixed relative to the adjustment cross rod; A guide seat is slidably connected to the guide rod, and the guide seat is relatively fixed relative to the connecting portion.

7. The air duct structure according to claim 1, characterized in that: A reinforcement structure is provided on the outer side of the connecting portion.

8. The air duct structure according to claim 7, characterized in that: The reinforcement structure is a reinforcement rib.

9. The air duct structure according to claim 7, characterized in that: The reinforcement structure is a thickened portion, the thickened portion is fixed to the connecting portion, and the total thickness of the thickened portion and the connecting portion is greater than the thickness of the protruding portion.

10. Air curtain machine, characterized by: include: A housing, wherein the housing is provided with an air inlet and a wind wheel chamber, and the air inlet is communicated with the wind wheel chamber; The air duct structure according to any one of claims 1 to 9, wherein the connecting portion is fixed relative to the housing, and the air inlet end is connected to the wind wheel chamber; A wind wheel structure is rotatably mounted in the wind wheel chamber, and is used to drive air to flow from the air inlet to the air duct structure.

Images