WO2018233671A1 - Air conditioner indoor unit having moving vane - Google Patents

Abstract

Provided is an air conditioner indoor unit (100) having a moving vane (4). The moving vane (4) is formed inside an air channel (3) between an air outlet (1) and a fan (2) of the indoor unit (100). The moving vane (4) comprises an assembly portion (41) and an air-guiding portion (42). End portions of the air-guiding portion (42) close to the air outlet (1) and the fan are a tail portion and a head portion, respectively. A plurality of recesses (421) are formed at the tail portion. The recess (421) extends in a direction from the tail portion to the head portion. The air-guiding portion (42) comprises an air-guiding surface having a changing width from the head portion to the tail portion. Moreover, the air-guiding portion (42) is configured such that the width of the air-guiding surface is positively correlated with a velocity of a passing air flow.

Description

Air conditioner indoor unit with pendulum Technical field

The present invention relates to the field of air conditioning technology, and more particularly to an air conditioner, and more particularly to an air conditioner indoor unit having a pendulum.

Background technique

As a whirlwind component on the air conditioner indoor unit, the pendulum blade can change the direction of the wind and achieve an adjustable direction. However, since the pendulum leaves are distributed at the air outlet, the presence of the pendulum leaves causes the airflow velocity of the air outlet to be uneven, the airflow noise is large, and the air supply comfort is not ideal.

Summary of the invention

An object of the present invention is to provide an air conditioner indoor unit having a pendulum blade and a method for determining an indoor unit swinging blade, which improves the uniformity of the air outlet of the indoor unit air outlet and reduces the wind noise.

In order to achieve the above object, the air conditioner indoor unit provided by the present invention is implemented by the following technical solutions:

An air conditioning indoor unit having a pendulum blade, wherein the swinging blade is formed in an air passage between an air outlet of the indoor unit and a fan, the swinging blade includes a fitting portion and a wind guiding portion; An end portion near the air outlet is a tail portion, and an end portion of the air guiding portion close to the fan is a head portion, and a plurality of notches are formed on the tail portion, and the notch is from the tail portion to the head portion Extending; the air guiding portion includes a wind guiding surface having a width varying from the head portion to the tail portion, and the air guiding portion is configured to have a width of the air guiding surface and a magnitude of a flow velocity of the passing airflow Related relationships.

In the air conditioning indoor unit as described above, a line connecting the opening contour lines of the plurality of notches forms an outline of the tail portion, and an outline of the tail portion coincides with a flow velocity distribution trajectory line at the air outlet.

In the air conditioning indoor unit as described above, the depth of the notch is d, the maximum width of the air guiding surface is e, and the depth and the maximum width satisfy:

In the air conditioning indoor unit as described above, the surface of the notch is an uneven surface.

Preferably, the surface of the notch is convex at an opening close to the notch and concave at an opening away from the notch.

In the air conditioning indoor unit as described above, the minimum width of the air passage between the air outlet and the fan is c, and the maximum height of the air guiding portion along the width direction of the air duct is b, the minimum The width and the maximum height satisfy:

In order to achieve the foregoing object, the method for determining the swinging of an indoor unit provided by the present invention is implemented by the following technical solutions:

A method for determining an indoor unit swinging blade, wherein the swinging blade is formed in an air passage between an air outlet of the indoor unit and a fan, the swinging blade includes an assembly portion and an air guiding portion; and the method includes:

Determining, respectively, an end portion of the air guiding portion near the air outlet and an end portion close to the fan as a tail portion and a head portion, and acquiring a flow velocity of the airflow passing through the air guiding surface of the air guiding portion;

Determining a width of the air guiding portion from the head to the tail portion according to a relationship positively related to the flow velocity of the air flow, and forming a wind guiding surface of the width of the air guiding portion according to the determined width;

A plurality of notches extending from the tail portion toward the head portion are formed on the tail portion.

In the method as described above, the flow rate of the airflow passing through the air guiding surface of the air guiding portion is obtained, and the air guiding portion is determined from the head to the tail portion in a positive correlation with the flow velocity of the air flow. a width, a wind guiding surface that changes the width of the air guiding portion according to the determined width, and specifically includes:

Obtaining a flow velocity distribution trajectory line at the air outlet, and shifting the airflow velocity distribution trajectory along the center line of the air outlet to the airway between the air outlet and the fan to a set position, and selecting a location a set length of the airflow velocity distribution trajectory line located in the air duct at the set position is determined as an outline of the tail portion; and the air guiding portion is determined according to a flow velocity of the airflow on the contour line of the tail portion a width of the head to the tail portion, forming a wind guiding surface of the width of the air guiding portion according to the determined width;

The set position and the set length are determined according to a width of the air duct and a height of the air guiding portion.

In the method as described above, the set position and the set length are determined according to the width of the air duct and the height of the air guiding portion, specifically including a minimum width c according to the air duct and the wind guide The maximum height b of the portion determines the set position and the set length, and the minimum width c and the maximum height b satisfy:

In the method as described above, a plurality of notches extending from the tail portion to the head portion are formed on the tail portion, and specifically include:

Moving the outline of the tail along the center line of the air outlet to the head by a distance d;

Forming, by the distance d as a depth of the notch, a plurality of notches extending from the tail portion to the head portion, and connecting lines of the opening contour lines of the plurality of notches forming an outline of the tail portion ;

The maximum width of the wind guiding surface is e, and the depth and the maximum width satisfy:

In the method as described above, the surface of the notch is an uneven surface.

Preferably, the surface of the notch is convex at an opening close to the notch and concave at an opening away from the notch.

Compared with the prior art, the advantages and positive effects of the present invention are: the present invention forms a plurality of notches on the tail portion of the wind deflecting portion near the air outlet, and utilizes the gap to break the airflow vortex which is easy to be generated at the trailing edge of the pendulum blade. The combing of the flow of the pendulum leaves reduces the noise generated by the friction between the airflow and the pendulum, and has a noise reduction effect; the width of the air guiding surface is positively correlated with the flow velocity of the passing airflow by configuring the air guiding portion The relationship is such that when the airflow flows through the swinging blade, the airflow with a high wind speed corresponds to the air guiding surface with a large width and a long distance, and the flow velocity is reduced, and the airflow with a low wind speed corresponds to the air guiding surface with a small width and a short distance, and the flow velocity is reduced. The small rate, so that the airflow after the brushing of the pendulum leaves reaches a more uniform flow velocity on the entire air guiding surface; further, the pendulum provided by the invention can improve the uniformity of the air outlet of the indoor unit and reduce the wind noise. The comfort of the indoor unit using the pendulum air supply is improved.

Other features and advantages of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

Figure 1 is a cross-sectional view showing an embodiment of an air conditioning indoor unit having a pendulum according to the present invention;

2 is a schematic diagram showing the principle of determining the pendulum of the embodiment of FIG. 1 based on the method for determining the swing angle of the indoor unit according to the present invention.

In the above figures, the reference numerals and their corresponding component names are as follows:

100, indoor unit; 1, air outlet; 2, fan; 3, air duct; 4, swinging leaf; 41, assembly part; 42, air guiding part; 421, notch; 422-423, convex surface; 424-425, concave surface .

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to Fig. 1, there is shown a cross-sectional view showing an embodiment of an air conditioning indoor unit having a pendulum according to the present invention. Specifically, it is a cross-sectional view of a wall-mounted air conditioner indoor unit having a pendulum

As shown in FIG. 1, the indoor unit 100 of this embodiment includes an air outlet 1 formed on a casing and a fan 2 formed in the casing. Specifically, the fan 2 is a cross-flow fan. An air duct 3 is formed between the air outlet 1 and the fan 2, and a swinging vane 4 is formed in the air duct 3. In addition, an indoor unit such as an evaporator and a water receiving tray is formed in the casing, and the air duct 3 is defined by a duct volute, and an air deflector is formed on the air outlet 1, and these components and structures are all indoor units. Conventional design is not elaborated here.

The swinging blade 4 is a member that is disposed in the air duct 3 and adjusts the airflow blown from the air outlet 1 in the left-right direction, and includes a plurality of laterally disposed along the longitudinal direction of the air outlet 1, and the plurality of swinging blades 4 pass through the linkage mechanism. For example, the linkage mechanism composed of the connecting rod and the motor swings left and right to realize the air guiding function. The pendulum blade 4 includes a fitting portion 41 and an air guiding portion 42 for realizing assembly of the pendulum blade 4, for example, assembly with a linkage mechanism.

The air guiding portion 42 serves as a main body portion for adjusting the wind direction of the swinging blade 4, and defines an end portion of the air guiding portion 42 near the air outlet 1 as a tail portion, and an end portion defining the air guiding portion 42 close to the fan 2 is a head portion, and a tail portion is formed on the tail portion. A plurality of notches 421 extend from the tail portion toward the head portion, and the opening faces the air outlet 1. Further, the air guiding portion 42 includes a wind guiding surface having a width varying from the head to the tail portion, that is, the width of the air guiding surface formed by the air guiding portion 42 from the head portion to the tail portion is not completely equal, but the width Variable. Specifically, the air guiding portion 42 is disposed such that the magnitude of the width of the air guiding surface is positively correlated with the magnitude of the air flow velocity passing through the air guiding surface. That is, the larger the flow velocity of the air passing through the air guiding surface, the larger the width of the air guiding surface; conversely, the smaller the air flow velocity passing through the air guiding surface, the smaller the width of the air guiding surface. For the air conditioner indoor unit, after the position and structure of the air outlet 1, the fan 2, the air duct 3, and the position of the swinging blade 4 are determined, the airflow velocity through the air guiding surface of the swinging blade 4 is also determined, then, according to the determined airflow The relationship between the flow velocity and the width of the air guiding surface and the positive correlation of the flow velocity can determine the width of the air guiding surface formed by the air guiding portion 42 from the head to the tail, and further, the wind deflecting plate is determined. 42 width from head to tail.

For example, in FIG. 1, e1 and e2 are respectively two widths on the air guiding portion 42, and when the indoor unit is in operation, the airflow velocity on the air guiding surface of the e1 width is higher than the air guiding surface of the e2 width. The flow rate of the airflow, therefore, e1>e2.

The method of determining the width of the air guiding portion 42 according to the flow velocity of the airflow can be implemented by various schemes. For example, in the structural design stage, the flow velocity of the airflow in the air duct 3 can be determined by simulating other structures, and the width of the air guiding portion 42 can be determined according to the flow velocity; or the indoor unit test after other structures are determined. During the operation, the velocity of the airflow in the air passage 3 is detected by the speedometer, and the width of the air guiding portion 42 is determined according to the flow velocity. As a more preferable one, it is also possible to determine the width of the air guiding portion 42 according to the airflow velocity distribution trajectory at the air outlet 1 (refer to L1 in FIG. 2), thereby obtaining a plurality of gaps in the air guiding portion 42. The line of the opening outline of 42 forms the outline of the tail (refer to L2 in Fig. 2), and the outline of the tail coincides with the flow velocity distribution trajectory at the air outlet 1. A more specific determination method is described below in conjunction with the description of FIG.

As a preferred embodiment, the surface of the notch 421 is an uneven surface. More preferably, in Fig. 1, the surface of the notch 421 includes a convex surface 422 and a convex surface 423 near the opening thereof, and a concave surface 424 and a concave surface 425 away from the opening thereof, so that the notch 421 is formed to have a small width near the opening thereof. The structure of the unequal width having a large width away from the opening can improve the ability of the notch 421 to disperse the airflow vortex and improve the noise reduction effect.

In this embodiment, by forming a plurality of notches 421 on the tail portion of the wind deflecting portion 4 of the swinging blade 4, the presence of the notch 421 can break up the vortex which is easy to generate at the trailing edge of the pendulum blade 4, and The airflow of the pendulum blade 4 is combed to reduce the noise generated by the friction between the airflow and the pendulum blade 4, and the noise reduction effect is achieved. Further, by arranging the air guiding portion 42 such that the width of the air guiding surface is positively correlated with the flow velocity of the passing airflow, when the airflow flows through the swinging blade 4, the airflow with a high wind speed corresponds to a wind guiding surface having a large width and a long distance. It can increase the obstruction effect of the pendulum 4 on the flow of the airflow, increase the pressure loss of the airflow, increase the flow velocity of the flow through the pendulum 4, and increase the flow rate reduction rate; and the airflow with a low wind speed corresponds to a small width and a short distance. The air guiding surface can reduce the obstruction effect of the pendulum blade 4 on the airflow, reduce the pressure loss of the airflow, reduce the flow velocity of the airflow flowing through the pendulum blade 4, and thereby reduce the flow velocity reduction rate, thereby making the carding 4 The airflow reaches a more uniform flow velocity over the entire air guiding surface, and the airflow velocity from the air outlet 1 is also more uniform. Further, by using the pendulum blade provided in the embodiment, the uniformity of the air outlet of the indoor unit air outlet 1 can be improved, and the wind noise can be reduced, and the comfort of the indoor unit using the swinging blade 4 can be improved.

Although the presence of the notch 421 can comb the airflow at the tail of the pendulum 4 to reduce the noise, the presence of the notch 421 also affects the ability of the pendulum 4 to adjust the wind direction. In other preferred embodiments, if the depth of the notch 421 is d and the maximum width of the air guiding surface of the air guiding portion 42 is e, the depth and the maximum width are satisfied.

conditions of. That is, the depth of the notch 421 is determined according to the maximum width of the air guiding surface of the air guiding portion 42, so that the depth of the notch 421 is limited to a certain range determined by the maximum width, on the basis of ensuring the wind direction adjusting function of the pendulum 4 Minimize noise.

In order to further improve the air blowing capability of the pendulum 4, in other embodiments, the position of the pendulum 4 in the air duct 3 is also limited. Specifically, as shown in FIG. 1, if the minimum width of the air duct 3 is c, the maximum height of the air guiding portion 42 along the width direction of the air duct 3 is b, and the minimum width and the maximum height are satisfied.

condition. Thereby, it is possible to ensure that the swinging blade 4 has a sufficient air guiding area for guiding air, ensuring the air guiding effect, and effectively avoiding structural interference.

2 is a schematic diagram showing the principle of determining the pendulum of the embodiment of FIG. 1 based on the method for determining the indoor machine swinging blade according to the present invention. FIG. 2 is a detailed description of the method for determining the pendulum blade of the embodiment of FIG.

The method for determining the pendulum as described herein refers to the method of determining the structure and position of the pendulum during the R&D design phase of the indoor unit. As shown in FIG. 1 and FIG. 2, a method of determining the pendulum blade 4 formed in the air duct 3 including the fitting portion 41 and the air guiding portion 42 includes:

The end portion of the air guiding portion 42 near the air outlet 1 and the end portion near the fan 2 are respectively determined as a tail portion and a head portion, and the air flow velocity passing through the air guiding surface of the air guiding portion 42 is obtained;

Determining the width of the air guiding portion 42 from the head to the tail according to a relationship positively related to the flow velocity of the air flow, and forming a wind guiding surface whose width of the air guiding portion changes according to the determined width;

A plurality of notches extending from the tail to the head are formed on the tail.

Through the flow velocity of the air guiding surface of the air guiding portion 42, the flow rate of the airflow in the air duct 3 can be determined by simulation, and the flow velocity of the airflow in the air duct 3 can be detected by the speedometer, which is more preferable. In one embodiment, the magnitude of the flow rate of the airflow passing through the air vent 1 is reflected by the magnitude of the flow rate of the airflow passing through the air guiding surface. When the flow velocity of the airflow passing through the air outlet 1 reflects the flow velocity of the airflow passing through the air guiding surface, the width of the air guiding portion 42 from the head to the tail is determined according to the relationship with the flow velocity, and the width is determined according to the determined width. The air guiding surface that forms the width of the air guiding portion 42 includes:

Obtaining the airflow velocity distribution trajectory line L1 at the air outlet, and shifting the airflow velocity distribution trajectory line L1 along the center line L of the air outlet 1 into the airway 3 to a set position, and selecting the set position at the air duct 3 The trajectory of the airflow velocity distribution of the set length is determined as the contour line L2 of the tail; according to the flow velocity of the airflow on the contour line L2 of the tail (the flow velocity is obtained when the airflow velocity distribution trajectory line L1 is obtained) The flow rate of the detection points is determined by the width of the air guiding portion 42 from the head to the tail portion, and the air guiding surface whose width of the air guiding portion 42 is changed is formed according to the determined width.

The set position and the set length are determined according to the width of the air duct 3 and the height of the air guiding portion 42. Specifically, the method includes: determining a set position and a set length according to a minimum width c of the air duct 3 and a maximum height b of the air guiding portion 42, and the minimum width c and the maximum height b are required to satisfy:

After the air duct 3 is determined, the minimum width c of the air duct 3 is determined and measurable; after the minimum width c is determined, the air guiding portion 42 can be determined according to the relationship between the minimum width c and the maximum height b. Maximum height b. After the maximum height b of the air guiding portion 42 is determined, since the maximum height b is the maximum height of the air guiding surface of the air guiding portion 42, the position and length of the contour line L2 of the tail portion in the air duct 3 can be determined based on the maximum height. .

A plurality of notches 421 extending from the tail portion to the head portion are formed on the tail portion of the air guiding portion 42, and specifically include:

The contour line L2 of the tail is moved by a distance d toward the head along the center line L of the air outlet 1.

With the distance d as the depth of the notch, a plurality of notches 421 extending from the tail portion to the head portion are sequentially formed on the tail portion, and the line connecting the opening contour lines of the plurality of notches forms the outline line L2 of the tail portion.

Moreover, if the maximum width of the wind guiding surface is e, the depth and the maximum width are required to satisfy:

As a preferred embodiment, the surface of the notch 421 is an uneven surface and has no smooth uneven surface. More preferably, as shown in FIG. 1, the surface of the notch 421 includes a convex surface 422 and a convex surface 423 near its opening and a concave surface 424 and a concave surface 425 away from the opening thereof. The formation of the uneven surface can be realized by the following method: after moving the outline L2 of the tail along the center line L of the air outlet 1 to the head by a distance d, the trajectory line L3 is obtained; the middle of the contour line L2 and the trajectory line L3 is taken. When the notch 421 is formed, the trajectory line L4 is formed as an inflection point of the concave-convex surface, the notched surface between the contour line L2 and the trajectory line L4 is convex, and the notched surface between the trajectory line L4 and the trajectory line L3 is concave. . Therefore, the notch 421 is formed to have a structure having a small width near the opening and a unequal width which is far from the opening, and the ability of the notch 421 to disperse the airflow vortex can be improved, and the noise reduction effect can be improved.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions are described as being modified, or equivalents are replaced by some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the technical solutions claimed in the present invention.

Claims (6)

1. An air conditioning indoor unit having a pendulum blade, the swinging blade being formed in an air passage between an air outlet of the indoor unit and a fan, wherein the swinging blade includes a fitting portion and a wind guiding portion, wherein An end portion of the air guiding portion near the air outlet and an end portion near the fan are respectively a tail portion and a head portion, and the tail portion is formed with a plurality of notches extending from the tail portion toward the head portion; The air guiding portion includes a wind guiding surface having a width varying from the head portion to the tail portion, and the air guiding portion is configured such that a width of the air guiding surface is positively correlated with a magnitude of a flow velocity of the passing airflow. relationship.
2. The air conditioning indoor unit according to claim 1, wherein a line connecting the opening contours of the plurality of notches forms an outline of the tail, an outline of the tail and a flow velocity at the air outlet The distribution trajectory is consistent.
3. The air conditioner indoor unit according to claim 1, wherein the depth of the notch is d, the maximum width of the wind guiding surface is e, and the depth and the maximum width satisfy:

   
4. The air conditioning indoor unit according to claim 1, wherein the surface of the notch is an uneven surface.
5. The air conditioning indoor unit according to claim 4, wherein the surface of the notch is convex at an opening close to the notch and concave at an opening away from the notch.
6. The air conditioner indoor unit according to any one of claims 1 to 5, wherein a minimum width of the air passage between the air outlet and the fan is c, and the air guiding portion is along the air passage The maximum height in the width direction is b, and the minimum width and the maximum height satisfy:

   

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