WO2018082437A1

WO2018082437A1 - Air conditioner air outlet structure, and air conditioner

Info

Publication number: WO2018082437A1
Application number: PCT/CN2017/106029
Authority: WO
Inventors: 朱芳勇; 熊军; 高旭
Original assignee: 珠海格力电器股份有限公司
Priority date: 2016-11-03
Filing date: 2017-10-13
Publication date: 2018-05-11
Also published as: CN106403040A

Abstract

Disclosed is an air conditioner air outlet structure, comprising a fan (1) and an air supply channel (2), wherein the fan (1) comprises a fan air inlet (4) and a fan air outlet (5), the air supply channel (2) is connected at the fan air outlet (5), and the cross section of the air supply channel (2) gradually reduces, from the fan air outlet (5), in a direction away from the fan air outlet (5).

Description

Air conditioning outlet structure and air conditioner

Technical field

The present invention relates to the field of air conditioning technology, and in particular to an air conditioning air outlet structure and an air conditioner.

Background technique

The traditional air conditioner has a small air outlet surface and a high outflow speed. The wind speed when flowing through the body surface is higher than the human body perceives the minimum wind speed, the aerodynamic noise is obvious, and the human body feels poor comfort.

If the air outlet is set to provide large-area air supply, after the airflow enters the airflow passage at high speed after the work of the wind turbine, the inertia will directly rush to the bottom of the channel, and the flow will be blocked from the lower end, and the upper end will be generated due to the internal high-speed airflow. The jet effect causes the upper heat exchanger side to not only emit air, but also the "reflow phenomenon" in which the external airflow is pressed into the circulation passage, which not only causes uneven airflow, but also affects the air outlet efficiency of the air conditioner.

Summary of the invention

In the embodiment of the invention, an air outlet structure and an air conditioner are provided, and the air outlet is uniform, and the air outlet efficiency of the air conditioner can be effectively ensured.

To achieve the above object, an embodiment of the present invention provides an air conditioning air outlet structure, including a fan and a supply air duct. The fan includes a fan air inlet and a fan air outlet, and the air supply duct is connected to the fan air outlet, and the air supply duct The cross section of the fan is diverted from the air outlet of the fan and away from the air outlet of the fan.

Preferably, the air conditioning air outlet structure further comprises a heat exchanger, and a front side wall of the air supply duct extends from a fan air outlet to a side of the heat exchanger close to the air outlet of the fan, and a rear side wall of the air supply duct is discharged from the fan. The tuyere extends to the other side of the heat exchanger away from the fan outlet, the heat exchanger is disposed at the outlet of the air duct, and the section of the air duct is decreased in a direction away from the fan outlet.

Preferably, the rear side wall is a variable curvature wall surface.

Preferably, the variable curvature wall gradually moves toward the heat exchanger in a direction away from the air outlet of the fan. Close together.

Preferably, the air supply duct is partitioned by the first partition into a first duct and a second duct.

Preferably, the first partition is a curved panel.

Preferably, the air outlet area of the first air duct is smaller than the air outlet area of the second air duct.

Preferably, the air inlet of the fan comprises a first air inlet away from a side of the air outlet of the fan, a second air inlet located at a first side of the air outlet of the fan, and/or a second side opposite to the first side of the air outlet of the fan. Three inlets.

Preferably, the relationship between the air volume of the fan and the inner diameter of the duct satisfies the following formula:

Where Q is the air volume provided by the fan, L2 is the width of the heat exchanger, M is the modulation parameter, generally takes the value 0.2 to 2, L1 is the height of the heat exchanger, Dx is the inner diameter of the air supply duct, and V is the air outlet speed.

According to another aspect of the present invention, an air conditioner is provided, including an air conditioning air outlet structure, which is the air conditioning air outlet structure described above.

Preferably, the air conditioning air outlet structure is two, and the two air conditioning air outlet structures are symmetrically disposed on an edge of the air duct of the air conditioning air outlet structure away from the air outlet of the air blower.

Applying the technical solution of the present invention, the air conditioning air outlet structure comprises a fan and a supply air duct, the fan comprises a fan air inlet and a fan air outlet, the air supply duct is connected at the fan air outlet, and the air supply duct cross section is self-fan outlet , decreasing in the direction away from the fan outlet.

Preferably, the air conditioning air outlet structure further comprises a heat exchanger, and a front side wall of the air supply duct extends from a fan air outlet to a side of the heat exchanger close to the air outlet of the fan, and a rear side wall of the air supply duct is discharged from the fan. The tuyere extends to the other side of the heat exchanger away from the fan outlet, the heat exchanger is disposed at the outlet of the air duct, and the section of the air duct is decreased in a direction away from the fan outlet. Since the cross section of the air supply duct of the air conditioning air outlet structure decreases in a direction away from the air outlet of the fan, the flow passage can be slowly increased in the flow direction away from the air outlet duct by using the flow passage of the variable cross section. The dynamic pressure of the airflow is lowered and the static pressure is increased, thereby reducing the flow inertia of the airflow and increasing the static pressure zone of the internal flow passage, and the velocity of the airflow from the static pressure zone to the heat exchanger is substantially the same. When the static pressure zone of the internal passage is expanded to cover the entire heat exchanger, the air conditioner achieves the purpose of uniform airflow. In the above manner, the air outlet of the air conditioner can be made uniform, and the air outlet efficiency of the air conditioner can be effectively ensured.

DRAWINGS

1 is a schematic structural view of an air outlet structure of an air conditioner according to an embodiment of the present invention;

2 is a schematic diagram of an air flow structure of an air outlet structure of an air conditioner according to an embodiment of the present invention;

3 is a dimensional structural view of an air outlet structure of an air conditioner according to an embodiment of the present invention;

4 is a combined structural view of an air outlet structure of an air conditioner according to an embodiment of the present invention.

DESCRIPTION OF REFERENCE NUMERALS: 1, fan; 2, air supply duct; 3, heat exchanger; 4, fan air inlet; 5, fan air outlet; 6, front side wall; 7, rear side wall; a partition; 9, a first air duct; 10, a second air duct; 11, a first air inlet; 12, a second air inlet; 13, a third air inlet.

detailed description

The invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 1 to FIG. 4, according to an embodiment of the present invention, the air conditioning air outlet structure includes a fan 1 and a supply air duct 2, and the fan 1 includes a fan air inlet 4 and a fan air outlet 5, and the air supply duct 2 is connected. At the fan outlet 5, the section of the supply duct 2 is decremented from the fan outlet 5 in a direction away from the fan outlet 5.

Since the cross section of the air supply duct 2 of the air conditioning air outlet structure decreases in a direction away from the fan air outlet 5, the flow passage in the direction away from the fan air outlet 5 can be made by using a flow passage having a variable cross section. The resistance increases slowly, causing the dynamic pressure of the airflow to decrease and the static pressure to increase, thereby reducing the flow inertia of the airflow and increasing the static pressure zone of the internal flow passage, and the velocity of the airflow from the static pressure zone will be substantially the same. In the above manner, the air outlet of the air conditioner can be made uniform, and the air outlet efficiency of the air conditioner can be effectively ensured.

Preferably, the air conditioning air outlet structure further comprises a heat exchanger 3, and the front side wall 6 of the air supply duct 2 extends from the fan air outlet 5 to a side of the heat exchanger 3 near the fan air outlet 5, and the air supply duct 2 The rear side wall 7 extends from the fan air outlet 5 to the other side of the heat exchanger 3 away from the fan air outlet 5, and the heat exchanger 3 is disposed at the outlet of the air supply duct 2, and the cross section of the air supply duct 2 The direction away from the fan outlet 5 is decreasing.

Since the cross section of the air supply duct 2 of the air conditioning air outlet structure decreases in a direction away from the fan air outlet 5, the air flow can be made away from the wind by using a flow passage having a variable cross section. During the flow of the air outlet 5, the resistance increases slowly, causing the dynamic pressure of the airflow to decrease and the static pressure to increase, thereby reducing the flow inertia of the airflow and increasing the static pressure zone of the internal flow passage. The velocity of the nip out of the heat exchanger 3 will be approximately the same. When the static pressure zone of the internal passage is expanded to cover the entire heat exchanger 3, the air conditioner achieves the purpose of uniform airflow. In the above manner, the air outlet of the air conditioner can be made uniform, and the air outlet efficiency of the air conditioner can be effectively ensured.

Preferably, the rear side wall 7 is a variable curvature wall surface, and the wall surface of the rear side wall 7 can be flexibly designed according to the static pressure structure, so that the air inside the air passage can be divided according to the static pressure method to ensure uniform air outlet on the wind surface.

The variable curvature wall gradually moves toward the heat exchanger 3 in a direction away from the fan outlet 5, so that the variable curvature wall surface and the inlet side of the heat exchanger 3 form a gradually narrowing flow space, and the dynamic pressure drop of the airflow is more easily realized. The static pressure is raised to increase the static pressure zone of the internal flow passage.

Preferably, the air supply duct 2 is partitioned by the first partition plate 8 into a first air duct 9 and a second air duct 10, wherein the first partition plate 8 is disposed at a position close to the fan air outlet 5 such that the first air duct 9 and the second air duct 10 cooperate with each other, the first air duct 9 can blow out the air outlet of the fan air outlet 5 to the position of the heat exchanger 3 near the fan air outlet 5, and the second air duct 10 can open the air outlet 5 of the fan. The outlet air is blown out to another portion of the heat exchanger 3, and the two air passages are matched to make the air distribution of the fan air outlet 5 more uniform and comfortable.

The first partition 8 is preferably a curved panel, which can form a more optimized wind guiding surface, so that the cooperation of the first air duct 9 and the second air duct 10 is more advantageous for ensuring uniform air outlet of the wind surface.

Preferably, as shown in FIG. 1 , the air outlet area of the first air duct 9 is smaller than the air outlet area of the second air duct 10 . The small air outlet of the first air duct 9 has a large wind speed, and can realize long-distance air supply; the second air duct 10 has a large air outlet, and can realize a large-area windless feeling.

The air inlet 4 of the fan includes a first air inlet 11 on a side away from the air outlet 5 of the fan, a second air inlet 12 on a first side of the air outlet 5 of the fan, and/or a second opposite the first side of the air outlet 5 of the fan. The third air inlet 13 on the side. The above three air inlets may be present individually or in whole, or may be combined in two. Preferably, the fan air outlet 5 includes a first air inlet port 11.

The relationship between the air volume of the fan 1 and the inner diameter of the air duct satisfies the following formula:

Where Q is the air volume provided by the fan 1, L2 is the width of the heat exchanger 3, and M is the modulation parameter. The number is generally 0.2 to 2, L1 is the height of the heat exchanger 3, Dx is the inner diameter of the air supply duct 2, and V is the air outlet speed. This formula specifies the range in which Dx varies with height in order to ensure uniform static pressure on the inlet side of the heat exchanger. The simulation results show that the indoor circulation of the air conditioner is excellent, the wind speed is close to the lowest wind speed of the human sense, and the windlessness is realized outside the 1m, and the aerodynamic noise is reduced by 0.5dB (A).

The above-mentioned air outlet structure can be 60-120 times larger than the air outlet area of the conventional air conditioner, and the wind speed is 0.4-1 m/s, which is 1/6 of that of the conventional air conditioner, achieving a windless feeling, high comfort, and air outlet. Excellent speed uniformity. Since the air outlet speed of the air conditioner is greatly reduced, the airflow is directly washed out of the bottom of the air duct and flows out of the heat exchanger at a high speed, and the noise of the whole machine is improved, and the simulation broadband noise is reduced by 0.5 dB(A), which can realize large-area windlessness. Feeling the wind, improving the comfort of people.

According to an embodiment of the invention, the air conditioner includes an air conditioning air outlet structure, and the air conditioning air outlet structure is the air conditioning air outlet structure described above.

Referring to FIG. 4, in one embodiment, the air conditioning air outlet structure is two, and the two air conditioning air outlet structures are symmetric about the edge of the air supply duct 2 of the air conditioning air outlet structure away from the fan air outlet 5. The arrangement (when the heat exchanger 3 is provided, the symmetrical arrangement of the heat exchanger 3 of the air-conditioning outlet structure away from the fan air outlet 5) makes the air-conditioning air outlet structure symmetrical and directional, which can effectively increase The air volume of the air conditioner improves the indoor temperature adjustment effect.

Of course, the above is a preferred embodiment of the invention. It should be noted that a number of modifications and refinements may be made by those skilled in the art without departing from the basic principles of the invention, and such modifications and refinements are also considered to be within the scope of the invention.

Claims

An air conditioning air outlet structure, comprising: a fan (1) and a supply air duct (2), the fan (1) comprising a fan air inlet (4) and a fan air outlet (5), the air supply The air duct (2) is connected to the fan air outlet (5), and the cross section of the air supply duct (2) is from the fan air outlet (5) in a direction away from the fan air outlet (5) Decrement.
The air conditioning air outlet structure according to claim 1, further comprising a heat exchanger (3), the front side wall (6) of the air supply duct (2) is from the fan air outlet (5) Extending to a side of the heat exchanger (3) adjacent to the fan air outlet (5), a rear side wall (7) of the air supply duct (2) extends from the fan air outlet (5) To the other side of the heat exchanger (3) remote from the fan air outlet (5), the heat exchanger (3) is disposed at an exit of the air supply duct (2), and the sending The cross section of the wind tunnel (2) decreases in a direction away from the fan outlet (5).
The air conditioning air outlet structure according to claim 2, wherein the rear side wall (7) is a variable curvature wall surface.
The air conditioning air outlet structure according to claim 3, wherein the variable curvature wall surface gradually approaches the heat exchanger (3) in a direction away from the fan air outlet (5).
The air conditioning air outlet structure according to claim 1, wherein the air supply duct (2) is partitioned by the first partition (8) into a first air passage (9) and a second air passage (10) .
The air conditioning air outlet structure according to claim 5, wherein the first partition (8) is a curved panel.
The air conditioning air outlet structure according to claim 5, wherein an air outlet area of the first air duct (9) is smaller than an air outlet area of the second air duct (10).
The air conditioning air outlet structure according to claim 1, wherein the fan air inlet (4) comprises a first air inlet (11) away from a side of the fan air outlet (5), and is located at the fan outlet. The second air inlet (12) on the first side of the tuyere (5) and/or the third air inlet (13) on the second side of the fan air outlet (5) opposite to the first side.
The air-conditioning air outlet structure according to any one of claims 2 to 8, characterized in that the relationship between the air volume of the fan (1) and the inner diameter of the air duct satisfies the following formula:

Where Q is the air volume provided by the fan (1), L2 is the width of the heat exchanger (3), and M is The modulation parameter is generally 0.2 to 2, L1 is the height of the heat exchanger (3), Dx is the inner diameter of the air supply duct (2), and V is the air outlet speed.
An air conditioner comprising an air conditioning air outlet structure, wherein the air conditioning air outlet structure is the air conditioning air outlet structure according to any one of claims 1 to 9.
The air conditioner according to claim 10, wherein the air conditioning air outlet structure is two, and the two air conditioning air outlet structures are related to the air supply duct (2) of the air conditioning air outlet structure The edges of the section are arranged symmetrically away from the edge of the fan outlet (5).