Air inlet grille, air inlet panel and cabinet air conditioner

Abstract

An air inlet grille relates to the technical field of air conditioners and comprises two grille layers arranged in parallel, each grille layer comprises a plurality of grille ribs which are crossed in a grid shape, and connecting lines between midpoints of end portions of air inlet ends and air outlet ends of horizontal sections of the grille ribs which are vertically arranged on the two grille layers intersect at one point; the utility model further provides an air inlet panel and a cabinet air conditioner, the resistance of the grid ribs during air inlet is reduced by changing the directions of the grid ribs which are vertically arranged, the flow direction change of airflow can be reduced, and the airflow distribution conditions of different areas of the heat exchanger are reasonably distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and in particular to an air inlet grille, an air inlet panel and an air conditioner cabinet. Background Art

[0002] At present, air conditioners are commonly used household appliances in people's daily lives. According to the installation method and application occasions, air conditioners can be divided into: wall-mounted air conditioners, floor-standing air conditioners and window air conditioners. Among them, the maximum air supply distance of floor-standing air conditioners can be greater than 15 meters, and with wide-angle air supply, it can take into account a larger area. It is widely used in occasions that need to adjust the temperature of a large range of spaces, such as large living rooms or commercial places; floor-standing air conditioners can be divided into round cabinets and square cabinets according to their different shapes. Among them, the round cabinet is a vertically placed cross-flow fan, which takes in air from the back of the air conditioner and exhausts air from the front. It has the characteristics of large air duct, large heat exchange area, more energy saving, small footprint, beautiful appearance, low noise, soft air supply and wide air sweeping area. In recent years, it has been recognized and used by more and more consumers.

[0003] like Figure 1-2 As shown, an air inlet is provided on the air inlet panel 2 on the cabinet housing 1 of the existing air-conditioning cabinet, and two layers of air inlet grilles are fixedly installed on the air inlet, and a filter is arranged between the two layers of air inlet grilles to prevent dust from entering the interior of the cabinet housing 1. However, the air inlet grille in the prior art is composed of a plurality of cross-shaped grille ribs 21 arranged in a grid shape. Although it can meet the demand for air intake, the plurality of grille ribs 21 are not arranged in accordance with the air intake characteristics of the cabinet housing 1, especially the vertically arranged grille ribs 21, whose angles have design defects, thus causing the wind resistance of the grille ribs 21 to increase, and due to the interference of the grille ribs 21, the direction of the airflow is unstable when entering the heat exchanger 5, resulting in a decrease in the heat exchange efficiency of the heat exchanger 5. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides an air inlet grille, an air inlet panel and an air conditioning cabinet, which solve the problems existing in the prior art of large wind resistance of grille ribs and interference with air flow direction.

[0005] An air inlet grille, comprising:

[0006] Two parallel grille layers, each of which includes a plurality of grille ribs arranged in a cross-grid pattern, and the lines connecting the midpoints of the air inlet and air outlet ends of the horizontal cross sections of a plurality of vertically arranged grille ribs on the two grille layers intersect at one point.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] 1. By changing the direction of several vertically arranged grille ribs, the resistance of the grille ribs during air intake is reduced. Especially when the distance between the grille layer and the heat exchanger is close, the heat exchanger is in the form of fins. Due to the influence of the grille ribs, the direction and shape of the airflow entering the gap between the heat exchanger fins will be affected, thereby increasing the resistance of the entire process of air entering the heat exchanger from the outside, and affecting the heat exchange efficiency of the local fin area of ​​the heat exchanger. After changing the direction of several vertically arranged grille ribs, the above problems can be effectively improved.

[0009] 2. Changing the direction of several vertically arranged grille ribs can greatly reduce the change in the flow direction of the airflow and the resistance of the ribs themselves. At the same time, through the guiding effect of several vertically arranged grille ribs, the flow direction of the airflow before entering the heat exchanger is more stable, the airflow turning fluctuation when entering the heat exchanger fins is reduced, and the resistance when flowing through the heat exchanger is reduced; through the guiding effect of the grille ribs, the airflow distribution in different areas of the heat exchanger can also be reasonably allocated to improve the uniformity of airflow distribution.

[0010] Preferably, each vertically arranged grille rib is rotated less than ±10° with the midpoint of the air outlet end of its horizontal cross section as the origin and the line between the midpoints of the air inlet end and the air outlet end of its horizontal cross section as the baseline.

[0011] Preferably, the horizontal cross-section of each of the vertically arranged grid ribs is a long strip structure.

[0012] Preferably, each horizontally arranged grille rib is an arc-shaped structure and is bent toward its air inlet direction, and the intersection of the lines connecting the midpoints of the air inlet and air outlet ends of the horizontal cross-sections of several vertically arranged grille ribs on the two grille layers is located on the air outlet side away from the horizontally arranged grille ribs.

[0013] Preferably, the air inlet end and the air outlet end of the horizontal cross section of each vertically arranged grille rib are both arcs.

[0014] Preferably, the width of the air inlet end of the horizontal cross-section of each vertically arranged grille rib is smaller than the width of the air outlet end thereof.

[0015] The utility model also provides an air inlet panel, comprising the air inlet grille.

[0016] The utility model also provides an air-conditioning cabinet, including a cabinet shell, an air inlet panel, and an air duct, a cross-flow fan and a heat exchanger vertically arranged in the cabinet shell, wherein the cabinet shell is a cylindrical structure, the air inlet panel is arranged on the cabinet shell, an air outlet is opened on the cabinet shell and is arranged opposite to the air inlet panel, the cross-flow fan is coaxially arranged in the cabinet shell, the heat exchanger is arranged close to the air inlet panel and is circumferentially arranged on the outside of the cross-flow fan and the air duct along the inner wall of the cabinet shell.

[0017] Preferably, the horizontal cross-section of the cross-flow fan is circular, and the intersection of the lines connecting the midpoints of the air inlet and air outlet ends of the horizontal cross-sections of a number of vertically arranged grille ribs on the two grille layers is located on the circumference of the horizontal cross-section of the cross-flow fan, and the intersection is also located on the angle bisector of the angle formed between the center of the circle of the horizontal cross-section of the cross-flow fan and the two opposing side wall edges of the air duct inlet.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the internal structure of an existing air conditioning cabinet.

[0020] Figure 2 for Figure 1 Top view of the .

[0021] Figure 3 It is a cross-sectional top view of an embodiment of the utility model.

[0022] Figure 4 It is a cross-sectional top view of another embodiment of the utility model.

[0023] Figure 5 Schematic diagram of the cross section of the grille rib.

[0024] The numbers in the figure are: 1, cabinet housing; 11, air outlet; 2, air inlet panel; 21, grille rib; 3, air duct; 4, cross-flow fan; 5, heat exchanger. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0026] like Figure 3-4 As shown, an embodiment of the utility model provides an air inlet grille, comprising: two parallel arranged grille layers, each of the grille layers comprising a plurality of cross-shaped and grid-arranged grille ribs 21, and the lines connecting the midpoints of the air inlet end and the air outlet end of the horizontal cross-sections of the plurality of vertically arranged grille ribs 21 on the two grille layers intersect at one point.

[0027] The plurality of vertically arranged grille ribs 21 on the two grille layers can be arranged relative to each other in a one-to-one correspondence, or can be arranged randomly. When the plurality of vertically arranged grille ribs 21 on the two grille layers are arranged relative to each other in a one-to-one correspondence, the lines connecting the midpoints of the air inlet end and the air outlet end of the horizontal cross-sections of two opposite vertically arranged grille ribs 21 on the two grille layers are collinear.

[0028] like Figure 3-4 As shown, according to another embodiment of the utility model, in the air inlet grille, preferably, each vertically arranged grille rib 21 takes the midpoint of the air outlet end of its horizontal cross-section as the origin, and rotates less than ±10° with the line between the midpoints of the air inlet end and the air outlet end of its horizontal cross-section as the baseline; and the horizontal cross-section of each of the vertically arranged grille ribs 21 is a long strip structure; so that the vertically arranged grille ribs 21 have more installation directions, are suitable for more installation forms, and can better reduce the air inlet resistance, while enhancing the guiding effect on the airflow.

[0029] like Figure 3-4 As shown, according to another embodiment of the utility model, in the air inlet grille, preferably, each horizontally arranged grille rib 21 is an arc-shaped structure and is bent toward its air inlet direction, and the intersection of the lines connecting the midpoints of the air inlet end and the air outlet end of the horizontal cross-sections of several vertically arranged grille ribs 21 on the two grille layers is located on the air outlet side away from the horizontally arranged grille ribs 21; so as to facilitate assembly with the cabinet housing 1 with a cylindrical structure.

[0030] like Figure 3-5 As shown, according to another embodiment of the utility model, the air inlet grille, preferably, the air inlet end and the air outlet end of the horizontal cross-section of each vertically arranged grille rib 21 are arcs; and the air inlet end width of the horizontal cross-section of each vertically arranged grille rib 21 is smaller than the width of its air outlet end; wherein the centers of the arcs of the air inlet end and the air outlet end of the horizontal cross-section of each vertically arranged grille rib 21 are both located on the central axis of the horizontal cross-section of the vertically arranged grille rib 21; or, of each vertically arranged grille rib 21 horizontal cross-section, only the center of the arc of the air inlet end is located on the central axis of the horizontal cross-section of the vertically arranged grille rib 21, while the center of the arc of the air outlet end is not located on the central axis; the above two structures of each vertically arranged grille rib 21 can better reduce the resistance generated during the air flow.

[0031] The utility model also provides an air inlet panel 2, comprising the above-mentioned air inlet grille.

[0032] like Figure 3-4 As shown, the utility model also provides an air-conditioning cabinet, including a cabinet housing 1, an air inlet panel 2, and an air duct 3, a cross-flow fan 4 and a heat exchanger 5 vertically arranged in the cabinet housing 1, the air inlet panel 2 is arranged on the cabinet housing 1, the cabinet housing 1 is a cylindrical structure, an air outlet 11 is opened on the cabinet housing 1 and is arranged opposite to the air inlet panel 2, the cross-flow fan 4 is coaxially arranged in the cabinet housing 1, and the heat exchanger 5 is arranged close to the air inlet panel 2 and is circumferentially arranged on the outside of the cross-flow fan 4 and the air duct 3 along the inner wall of the cabinet housing 1.

[0033] like Figure 3-4 As shown, preferably, the horizontal cross-section of the cross-flow fan 4 is a circle C, the center of circle C is point O, and two points A and B on the two opposite side wall edges of the air inlet of the air duct 3 are taken, and OA and OB are connected to form ∠AOB, the angular bisector of ∠AOB is OE, and the intersection of the angular bisector OE and the circle C is point F. The intersection of the line connecting the midpoints of the air inlet and air outlet ends of the horizontal cross-sections of several vertically arranged grille ribs 21 on the two grille layers is located at point F; when air from the external environment passes through the two grille layers of the air inlet panel 2 and the heat exchanger 5 to reach the air inlet of the air duct 3, due to the structural characteristics of the air duct 3, the air is most concentrated in the middle area of ​​the air inlet of the air duct 3, that is, the flow rate is the highest. Therefore, when the airflow is sucked into the air duct 3 by the cross-flow fan 4, the airflow will be distributed radially along a circle with the intersection of the outer edge of the cross-flow fan 4 and the dividing line of the center of the air inlet of the air duct 3 as the center, so that setting the intersection of the connecting line between the midpoints of the air inlet and air outlet ends of the horizontal cross-sections of several vertically arranged grille ribs 21 on the two grille layers at point F can greatly reduce the change in the flow direction of the airflow and reduce the resistance of the ribs themselves. At the same time, further through the guiding effect of the grille ribs 21, the flow direction of the airflow before entering the heat exchanger 5 is made more stable, the airflow turning fluctuation when entering the fins of the heat exchanger 5 is reduced, and the resistance when flowing through the heat exchanger 5 is reduced; through the guiding effect of the grille ribs 21, the airflow distribution in different areas of the heat exchanger 5 can also be reasonably distributed to improve the uniformity of airflow distribution.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An air inlet grille, characterized in that: include: Two parallel grille layers, each of which comprises a plurality of grille ribs (21) arranged in a cross-like manner and in a grid shape, and lines connecting the midpoints of the air inlet and air outlet ends of the horizontal cross sections of the plurality of vertically arranged grille ribs (21) on the two grille layers intersect at one point.

2. The air inlet grille according to claim 1, characterized in that: Each vertically arranged grille rib (21) is rotated less than ±10° with the midpoint of the air outlet end of its horizontal cross section as the origin and the line between the midpoints of the air inlet end and the air outlet end of its horizontal cross section as the baseline.

3. The air inlet grille according to claim 2, characterized in that: The horizontal cross section of each of the vertically arranged grid ribs (21) is a long strip structure.

4. The air inlet grille according to claim 1, characterized in that: Each horizontally arranged grille rib (21) is an arc-shaped structure and is bent toward its air inlet direction, and the intersection of the lines connecting the midpoints of the air inlet end and the air outlet end of the horizontal cross-sections of a plurality of grille ribs (21) on the two grille layers is located on the air outlet side of the horizontally arranged grille rib (21).

5. The air inlet grille according to claim 3, characterized in that: The air inlet end and the air outlet end of the horizontal cross section of each vertically arranged grille rib (21) are both arcs.

6. The air inlet grille according to claim 5, characterized in that: The width of the air inlet end of the horizontal cross section of each vertically arranged grille rib (21) is smaller than the width of the air outlet end thereof.

7. An air inlet panel (2), characterized in that: It comprises an air inlet grille as described in any one of claims 1 to 6.

8. An air conditioning cabinet, characterized in that: The cabinet housing (1) comprises an air intake panel (2) as claimed in claim 7, an air duct (3), a cross-flow fan (4) and a heat exchanger (5) vertically arranged in the cabinet housing (1), wherein the cabinet housing (1) is a cylindrical structure, the air intake panel (2) is arranged on the cabinet housing (1), an air outlet (11) is provided on the cabinet housing (1) and is arranged opposite to the air intake panel (2), the cross-flow fan (4) is coaxially arranged in the cabinet housing (1), and the heat exchanger (5) is arranged close to the air intake panel (2) and is arranged on the outside of the cross-flow fan (4) and the air duct (3) along the circumference of the inner wall of the cabinet housing (1).

9. The air conditioning cabinet according to claim 8, characterized in that: The horizontal cross-section of the cross-flow fan (4) is circular, and the intersection of the line connecting the midpoints of the air inlet end and the air outlet end of the horizontal cross-section of a plurality of vertically arranged grille ribs (21) on the two grille layers is located on the circumference of the horizontal cross-section of the cross-flow fan (4), and the intersection is also located on the angle bisector of the angle formed between the center of the horizontal cross-section of the cross-flow fan (4) and the two opposite side wall edges of the air inlet of the air duct (3).

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