CN108644905A - Air outlet structure and air conditioner - Google Patents

Abstract

The invention provides an air outlet duct structure and an air conditioner. The air outlet duct structure comprises a double-suction centrifugal fan (1), a first volute (2) and a second volute (3), wherein the first volute (2) is arranged on a first air suction side of the double-suction centrifugal fan (1), the second volute (3) is arranged on a second air suction side of the double-suction centrifugal fan (1), the first volute (2) is provided with a first air outlet (4), and the second volute (3) is provided with a second air outlet (5). According to the air outlet duct structure, the space occupation of the air conditioner can be reduced, and the cost of the air conditioner is reduced.

Description

Air outlet structure and air conditioner

technical field

The invention belongs to the technical field of air conditioning, and in particular relates to an air outlet duct structure and an air conditioner.

Background technique

The comfort requirements of existing air conditioners are gradually increasing. The cabinet air conditioner adopts the design of the upper and lower air outlets, which can meet the requirements of shower-type air supply from the upper air outlet of the cold air flow and carpet-type air supply from the lower air outlet of the hot air flow, and achieve a better air supply effect.

However, at present, double centrifugal fans are used in the air duct of the cabinet machine, and the fans are respectively arranged at the upper and lower positions, which not only costs a lot, but also takes up a lot of space. limit.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to provide an air outlet duct structure and an air conditioner, which can reduce the space occupied by the air conditioner and reduce the cost of the air conditioner.

In order to solve the above problems, the present invention provides an air outlet duct structure, including a double-suction centrifugal fan, a first volute and a second volute, the first volute is arranged on the first suction side of the double-suction centrifugal fan, the second The second volute is arranged on the second suction side of the double-suction centrifugal fan, the first volute has a first air outlet, and the second volute has a second air outlet.

Preferably, the orientations of the first air outlet and the second air outlet are the same.

Preferably, the first air outlet and the second air outlet are respectively located at two ends of the same diameter of the double-suction centrifugal fan.

Preferably, the first volute includes a first swirl section and a first expansion section arranged in sequence along the air flow direction, and the cross-sectional area of the first expansion section increases along the air flow direction; and/or, the second volute includes a first swirl section along the air flow direction. The second swirl segment and the second expansion segment are arranged in sequence, and the cross-sectional area of the second expansion segment increases along the air flow direction.

Preferably, the first expansion section expands towards the second inspiratory side; and/or, the second expansion section expands towards the first inspiratory side.

Preferably, in a plane perpendicular to the central axis of the double-suction centrifugal fan, the first expansion section extends along the exit direction of the first swirl section, and the second expansion section extends oppositely along the exit direction of the second swirl section .

Preferably, the diameter of the first volute and the second volute at the vane of the double-suction centrifugal fan is 300mm-400mm, the diameter of the vane is 240mm-320mm, and the axial height of the vane is 90mm-140mm.

According to another aspect of the present invention, an air conditioner is provided, including a housing and an air outlet duct structure disposed in the housing, where the air outlet duct structure is the aforementioned air outlet duct structure.

Preferably, the casing includes an upper air outlet and a lower air outlet, the first air outlet is arranged corresponding to the upper air outlet, and the second air outlet is arranged corresponding to the lower air outlet.

Preferably, an air outlet baffle is provided at the upper air outlet and/or the lower air outlet.

Preferably, the casing is further provided with a first air inlet and a second air inlet, the first air inlet is arranged corresponding to the first suction side, and the second air inlet is arranged corresponding to the second air suction side.

Preferably, a first heat exchanger and a second heat exchanger are also arranged in the casing, the first heat exchanger is arranged between the first suction side and the first air inlet, and the second heat exchanger is arranged at the second suction side. Between the air side and the second air inlet.

The air outlet duct structure provided by the present invention includes a double-suction centrifugal fan, a first volute and a second volute, the first volute is arranged on the first suction side of the double-suction centrifugal fan, and the second volute is arranged on the double-suction centrifugal fan. On the second suction side of the suction centrifugal fan, the first volute has a first air outlet, and the second volute has a second air outlet. The air outlet structure adopts double-suction centrifugal fans for suction on both sides, which can reduce the number of fans and reduce equipment costs. Utilization efficiency can increase the air volume, and can also improve the flow of circulating air in the room and enhance indoor comfort.

Description of drawings

Fig. 1 is a structural schematic diagram of an air outlet duct structure according to an embodiment of the present invention;

Fig. 2 is a side view structural schematic diagram of an air outlet duct structure according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of an air conditioner according to an embodiment of the present invention.

The reference signs are indicated as:

1. Double-suction centrifugal fan; 2. The first volute; 3. The second volute; 4. The first air outlet; 5. The second air outlet; 6. The first swirl section; 7. The first expansion section; 8. The second swirl section; 9. The second expansion section; 10. The shell; 11. The upper air outlet; 12. The lower air outlet; 13. The first air inlet; 14. The second air inlet; 15. The first Heat exchanger; 16, the second heat exchanger.

Detailed ways

1 to 3, according to an embodiment of the present invention, the air outlet duct structure includes a double-suction centrifugal fan 1, a first volute 2 and a second volute 3, and the first volute 2 is arranged on the double-suction The first suction side of the centrifugal fan 1, the second volute 3 is arranged on the second suction side of the double-suction centrifugal fan 1, the first volute 2 has a first air outlet 4, and the second volute 3 has a second outlet Tuyere 5.

The air outlet structure adopts double-suction centrifugal fans 1 for suction on both sides, which can reduce the number of fans and equipment costs, and at the same time reduce the volume of the air outlet structure, reduce the space occupation of the air conditioner, and increase the number of fans It can improve the utilization efficiency of the room, increase the air volume, and also improve the flow of circulating air in the room and enhance the comfort of the room.

Preferably, the orientations of the first air outlet 4 and the second air outlet 5 are the same. Generally speaking, the air outlets blow away from the installation wall and blow away from the wall. Therefore, the first air outlet 4 and the second air outlet The direction of the tuyere 5 is the same, which can ensure the consistency of the air outlet direction of the first volute 2 and the second volute 3, realize the maximization of the air outlet volume, and enable the indoor air to be adjusted quickly.

The orientations of the first air outlet 4 and the second air outlet 5 can also be opposite, so that the first air outlet 4 blows air toward the first direction, and the second air outlet 5 blows air toward the second direction opposite to the first direction, thereby The air from the first air outlet 4 and the second air outlet 5 can form a cycle, further speeding up the indoor air flow efficiency, realizing rapid adjustment of indoor air, and avoiding direct blowing to the human body, improving user experience.

Preferably, the first air outlet 4 and the second air outlet 5 are respectively located at both ends of the same diameter of the double-suction centrifugal fan 1, so that there is a maximum distance between the first air outlet 4 and the second air outlet 5, and the air outlet The mutual influence of each other is small, the air outlet effect is better, the air outlet covers a larger area, and the indoor air temperature is adjusted more quickly.

In this embodiment, the first volute 2 includes a first swirl section 6 and a first expansion section 7 arranged in sequence along the air flow direction, the cross-sectional area of the first expansion section 7 increases along the air flow direction, and the first swirl section 6 can swirl guide the airflow inhaled by the first suction side, so that the air inhaled by the first suction side passes through the guide flow of the first swirl section 6 and blows out from the air outlet of the first swirl section 6, and then passes through the first swirl section 6 An expansion section 7 performs pressure diffusion, increases the air outlet area and air outlet pressure of the first volute 2 , and increases the air supply capacity and coverage area of the first volute 2 .

Preferably, the second volute 3 includes a second swirl segment 8 and a second expansion segment 9 arranged in sequence along the air flow direction, the second expansion segment 9 increases in cross-sectional area along the air flow direction, and the second swirl segment 8 can The airflow inhaled by the second suction side is swirled and guided, so that the air sucked in by the second suction side passes through the diversion of the second swirl section 8 and blows out from the air outlet of the second swirl section 8, and then passes through the second expansion section 9. Perform pressure expansion, increase the air outlet area and air outlet pressure of the second volute 3, and increase the air supply capacity and coverage area of the second volute 3.

Preferably, the air outlet direction of the air outlet of the first swirl section 6 and the air outlet of the second swirl section 8 are opposite, which can make the air outlet direction of the first volute 2 and the second volute 3 at the swirl section On the contrary, making the first expansion section 7 and the second expansion section 9 form a misalignment, it is more convenient to realize the structural change of the first expansion section 7 and the second expansion section 9, and ensure the first expansion between them on the basis of realizing the expansion The positions of the segment 7 and the second expansion segment 9 will not interfere, and the structural design is more reasonable.

Preferably, the first expansion section 7 expands toward the second suction side; and/or, the second expansion section 9 expands toward the first suction side, which can make the first expansion section 7 and the second expansion section 9 expand in the double suction centrifugal The projections on the central shaft of the fan 1 overlap at least partially, thereby reducing the width of the air outlet duct structure in the axial direction of the double-suction centrifugal fan 1, reducing the volume of the air outlet duct structure, and making the outlet air duct The structure occupies less space, thereby realizing the miniaturization of the air conditioner, so that the air conditioner can be applied to occasions with limited space, and can provide sufficient air volume to ensure the working performance of the air conditioner.

Preferably, the projections of the first expansion section 7 and the second expansion section 9 on the central rotation axis of the double-suction centrifugal fan 1 are substantially completely coincident on the central rotation axis of the double-suction centrifugal fan 1, so that the structural design of the air outlet duct structure able to achieve the optimum.

Preferably, in a plane perpendicular to the central axis of the double-suction centrifugal fan 1, the first expansion section 7 extends along the outlet direction of the first swirl section 6, and the second expansion section 9 extends along the outlet direction of the second swirl section 8. The exit direction extends in the opposite direction. Since the direction of the air outlet of the first swirl section 6 and the second swirl section 8 is opposite, if the expansion section continues to extend along the air outlet direction of the swirl section, the direction of the air outlet of the two expansion sections will be opposite. It is impossible to keep the wind in the same direction, therefore, it is necessary to adjust the extension direction of one of the expansion sections to make it extend in the opposite direction, so that the first volute 2 and the second volute 3 are in the same direction as the first air outlet 4 and the second outlet. The air outlet direction at the air outlet 5 is consistent.

The diameter of the first volute 2 and the second volute 3 at the fan blade of the double-suction centrifugal fan 1 is 300mm-400mm, the diameter of the fan blade is 240mm-320mm, and the axial height of the fan blade is 90mm-140mm. When the size of the fan blade of the double-suction centrifugal fan 1 is matched with the volute, in order to meet the spiral flow law in the volute, there must be a certain gap between the fan blade and the volute in the axial and radial directions, and the design is as above The size can effectively increase the air volume and reduce the rotation noise and broadband noise.

As shown in FIG. 3 , according to an embodiment of the present invention, the air conditioner includes a housing 10 and an air outlet duct structure disposed in the housing 10 . The air outlet duct structure is the aforementioned air outlet duct structure.

Preferably, the casing 10 includes an upper air outlet 11 and a lower air outlet 12, the first air outlet 4 is arranged corresponding to the upper air outlet 11, and the second air outlet 5 is arranged corresponding to the lower air outlet 12, so that the air conditioner can realize distributed air distribution up and down. Wind, expand the air supply range and air volume, and at the same time improve the flow of circulating air in the room and enhance indoor comfort.

Preferably, the upper air outlet 11 and/or the lower air outlet 12 are provided with an air outlet baffle, which can open or close the upper air outlet 11 or the lower air outlet 12 as required, so as to realize the upper air outlet during cooling and the lower air outlet during heating , to meet the shower-type air supply from the upper air outlet of the cold air flow and the carpet-type air supply from the lower air outlet of the hot air flow, further improving the user experience.

The casing 10 is also provided with a first air inlet 13 and a second air inlet 14, the first air inlet 13 is arranged corresponding to the first suction side, the second air inlet 14 is arranged corresponding to the second suction side, and the double-suction centrifugal fan 1 The first suction side of the double-suction centrifugal fan 1 can enter the air through the first air inlet 13, and the second suction side of the double-suction centrifugal fan 1 can enter the wind through the second air inlet 14, which meets the air intake requirements of the double-suction centrifugal fan 1.

The casing 10 is also provided with a first heat exchanger 15 and a second heat exchanger 16, the first heat exchanger 15 is arranged between the first suction side and the first air inlet 13, and the second heat exchanger 16 is arranged Between the second suction side and the second air inlet 14, heat exchange can be performed on the air entering the double-suction centrifugal fan 1, so that the blown air meets requirements.

When the air conditioner is working, the motor drives the double-suction centrifugal blades to rotate. Under the negative pressure of the double-suction centrifugal impeller, the circulating air is sucked in from the air inlets on both sides, passes through the heat exchanger, enters the double-suction centrifugal impeller, and passes through After the impeller does work, the airflow on the first suction side passes through the first volute 2, and the airflow on the second suction side passes through the second volute 3, and the airflow on the second suction side passes through the second volute 3, so that a double suction centrifugal impeller, motor And under the action of the two volutes, the air is distributed up and down to improve the comfort of the room.

Since the double-suction centrifugal fan 1 adopts double-suction air intake on both sides, the indoor air flow flows from both sides of the room, forming a wrapped circulating air flow in the room with the upper and lower air outlets, which further improves the comfort of the room. At the same time, on the basis of improving the comfort and performance of the indoor unit, the centrifugal fan blades share the same motor, reducing the number of motors, reducing the cost of the indoor unit, and further solving the problem of insufficient air-conditioning space.

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside. The above are only preferred embodiments of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (12)

1. a kind of exhaust air flue structure, which is characterized in that including double-suction centrifugal fan (1), the first spiral case (2) and the second spiral case (3), the first spiral case (2) setting is in the first suction side of the double-suction centrifugal fan (1), the second spiral case (3) setting In the second suction side of the double-suction centrifugal fan (1), first spiral case (2) has the first air outlet (4), second snail Shell (3) has the second air outlet (5).

2. exhaust air flue structure according to claim 1, which is characterized in that first air outlet (4) and described second The direction of air outlet (5) is identical.

3. exhaust air flue structure according to claim 1, which is characterized in that first air outlet (4) and described second Air outlet (5) is located at the both ends of the same diameter of the double-suction centrifugal fan (1).

4. exhaust air flue structure according to claim 1, which is characterized in that first spiral case (2) includes along air stream To the first eddy flow section (6) and the first expansion segment (7) set gradually, first expansion segment (7) is cut along air-flow direction Face area is incremented by；And/or second spiral case (3) includes that the second eddy flow section (8) set gradually along air flow direction and second are expanded Section (9) is opened, second expansion segment (9) is incremented by along air-flow direction area of section.

5. exhaust air flue structure according to claim 4, which is characterized in that first expansion segment (7) is towards described Two suction sides are expanded；And/or second expansion segment (9) is expanded towards first suction side.

6. exhaust air flue structure according to claim 4, which is characterized in that perpendicular to the double-suction centrifugal fan (1) Central axis plane in, first expansion segment (7) along the first eddy flow section (6) export direction extend, it is described Second expansion segment (9) is oppositely extending along the export direction of the second eddy flow section (8).

7. exhaust air flue structure according to claim 1, which is characterized in that first spiral case (2) and second snail Shell (3) a diameter of 300mm-400mm at the fan blade of the double-suction centrifugal fan (1), a diameter of 240mm- of the fan blade The axial height of 320mm, the fan blade are 90mm-140mm.

8. a kind of air conditioner includes the exhaust air flue structure of shell (10) and setting in the shell (10), which is characterized in that The exhaust air flue structure is the exhaust air flue structure described in any one of claim 1 to 7.

9. air conditioner according to claim 8, which is characterized in that the shell (10) include upper air outlet (11) and under go out Air port (12), the first air outlet (4) correspondence upper air outlet (11) is arranged, described in the second air outlet (5) correspondence Lower air outlet (12) setting.

10. air conditioner according to claim 9, which is characterized in that the upper air outlet (11) and/or the lower air outlet (12) air outlet guard board is provided at.

11. air conditioner according to claim 8, which is characterized in that be additionally provided with the first air inlet on the shell (10) (13) it is arranged with the second air inlet (14), corresponding first suction side of first air inlet (13), second air inlet (14) the corresponding second suction side setting.

12. air conditioner according to claim 11, which is characterized in that be additionally provided with First Heat Exchanger in the shell (10) (15) it is arranged in first suction side and first air inlet with the second heat exchanger (16), the First Heat Exchanger (15) (13) between, second heat exchanger (16) is arranged between second suction side and second air inlet (14).