Wall-mounted air conditioner indoor unit and air guide plate thereof

Abstract

The present invention provides a wall-mounted air conditioner indoor unit and its air guide plate. The air guide plate includes: an air guide plate body, which is used to be rotatably installed at the air outlet of the wall-mounted air conditioner indoor unit, and a through flow outlet is provided on the air guide plate body; and a wind lifting plate, which extends from the first side of the air guide plate body toward the air outlet along the air flow direction and gradually away from the first side, and the extension starting point is located on the upstream side of the air flow relative to the flow outlet, so that the supply air flow changes the air flow direction when passing through the wind lifting plate, and forms a negative pressure at the first side, thereby driving the ambient air on the other side of the air guide plate body to merge into the supply air flow through the flow outlet; and a plurality of micropores are provided on the air lifting plate that penetrate its two sides, so as to allow part of the ambient air to merge into the supply air flow through the flow outlet and the micropores in turn. The air guide plate of the present invention has an air guiding function and a flow mixing function, so as to make the supply air flow more comfortable.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to a wall-mounted air-conditioning indoor unit and an air guide plate thereof. Background Art

[0002] With the development of the times and the advancement of technology, users not only expect air conditioners to have faster cooling and heating speeds, but also pay more and more attention to the comfort performance of air conditioners.

[0003] However, in order to achieve faster cooling and heating, it is inevitable to supply air with a large air volume. However, when the cold or hot air with too high wind speed blows directly on the human body, it will inevitably cause discomfort to the human body. If the human body is directly blown by cold air for a long time, it will also cause air conditioning disease.

[0004] Therefore, how to achieve comfortable air supply of air conditioners has become a technical problem that needs to be solved urgently in the air conditioning industry. Summary of the invention

[0005] The object of the present invention is to provide a wall-mounted air conditioner indoor unit and an air guide plate thereof that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems.

[0006] The purpose of the present invention is to enable the air guide plate to have the functions of guiding air and mixing air, so as to make the air supply flow more comfortable.

[0007] A further object of the present invention is to enable the air guide plate to have a wind-raising function so as to achieve the upward blowing of cold air.

[0008] In one aspect, the present invention provides an air guide plate for a wall-mounted air conditioner indoor unit, comprising:

[0009] The air guide plate body is used to be rotatably mounted at the air outlet of the indoor unit of the wall-mounted air conditioner, and a through-flow outlet is provided on the air guide plate body; and

[0010] The wind-raising plate extends from the first side surface of the wind guide plate body toward the air outlet and gradually away from the first side surface along the airflow direction, and the extension starting point is located at the upstream side of the airflow relative to the air guide port, so that the air supply airflow changes the airflow direction when flowing through the wind-raising plate, and forms a negative pressure at the first side surface, thereby driving the ambient air on the other side of the wind guide plate body to merge into the air supply airflow through the air guide port; and

[0011] A plurality of micro holes penetrating through two sides of the wind lifting plate are provided to allow part of the ambient air to flow into the supply air flow through the air inlet and the micro holes in sequence.

[0012] Optionally, the angle between the axis of each microhole and the surface of the wind-raising plate is an acute angle, so that the inflow direction of the ambient air and the flow direction of the air supply airflow on the surface of the wind-raising plate form an acute angle.

[0013] Optionally, the wind-raising plate extends from an upstream edge of the airflow guide port.

[0014] Optionally, the projection of the wind-raising plate on the first side at least covers the drainage port.

[0015] Optionally, the end of the wind-raising plate along the airflow direction exceeds the drainage port to define a drainage channel connected to the drainage port with the first side surface.

[0016] Optionally, the wind guide plate further includes: a plurality of connecting ribs, which are arranged at intervals in a direction parallel to the rotation axis of the wind guide plate body, and each connecting rib connects the wind lifting plate and the wind guide plate body.

[0017] Optionally, the projection of the wind-raising plate on the first side is located within the range of the wind guide plate body.

[0018] Optionally, the wind-raising plate is an arc-shaped plate whose central axis is parallel to the rotation axis of the wind guide plate body and whose convex surface faces the wind guide plate body.

[0019] On the other hand, the present invention also provides a wall-mounted air-conditioning indoor unit, comprising: a shell having an air outlet; and an air guide plate, which is the air guide plate according to any of the above items, wherein the air guide plate body is rotatably installed at the air outlet.

[0020] Optionally, the air guide plate also includes at least one rotating arm, one end of which is connected to a driving device located inside the shell, and the other end is connected to the air guide plate body, so that under the drive of the driving device, the air guide plate body is driven to rotate upward around the first end of the rotating arm to close the air outlet, or rotate downward to open the air outlet; and an inner guide plate is also installed at the air outlet, which is located on the inner side of the air guide plate.

[0021] The air guide plate of the present invention has an air mixing function. When the supply air flow passes through the first side surface of the air guide plate body, the wind lifting plate arranged on the air guide plate body changes the flow direction of the supply air flow, making it away from the first side surface of the air guide plate body, thereby reducing the air flow density at the first side surface of the air guide plate body, forming a negative pressure. Under the attraction of the negative pressure area, the ambient air on the second side of the air guide plate body enters the negative pressure area through the drainage port opened on the air guide plate body, and then merges into the supply air flow, forming a mixed air effect. When the air conditioner is cooling, the mixing of ambient air can appropriately increase the temperature of the supply air flow; when the air conditioner is heating, the mixing of ambient air can appropriately reduce the temperature of the supply air flow, both of which make the supply air flow more comfortable.

[0022] In addition, after the ambient air enters the air intake port, a portion of the ambient air will also flow into the supply air flow through the micropores on the wind-raising plate, which further increases the amount of mixed air. The present invention further makes the angle between the axis of each micropore and the surface of the wind-raising plate an acute angle, so that the direction of the ambient air flowing in is an acute angle with the flow direction of the supply air flow on the surface of the wind-raising plate, which ensures that the function of the micropores is to make the ambient air flow into the supply air flow, rather than to make the supply air flow flow into the ambient air.

[0023] The present invention realizes the air mixing function by only opening the air guide plate body and adding an air lifting plate, which is very clever in design, very simple in structure and low in cost. Moreover, other structures of the indoor unit of the wall-mounted air conditioner do not need to be modified, which is very conducive to mass production and promotion.

[0024] Furthermore, when the wind guide plate of the present invention is guiding the wind, the supply air flow can be blown upward under the action of the wind lifting plate, which not only generates a negative pressure area, but also makes the upward blowing angle of the supply air flow (the angle between the upward wind outlet direction and the vertical direction) smaller, so as to better avoid the human body.

[0025] Furthermore, the wind guide plate of the present invention makes the end of the wind lifting plate in the airflow direction exceed the drainage port, so as to define a drainage channel connected with the drainage port with the first side surface, which can guide the flow direction of the ambient air, make the angle between the ambient air and the supply air flow smaller, and make the mixing of the two more gentle, so as to avoid the ambient air directly passing through the drainage port and vertically entering the supply air flow, causing problems such as excessive noise.

[0026] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 is a schematic structural diagram of an air guide plate according to an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 Another perspective schematic diagram of the air guide plate shown;

[0030] Figure 3 yes Figure 1 A cross-sectional view of the wind deflector shown;

[0031] Figure 4 is a schematic diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

[0032] Figure 5 yes Figure 4 The schematic diagram shows the state of the indoor unit of the wall-mounted air conditioner after the air guide plate is further opened. DETAILED DESCRIPTION

[0033] Figure 1 is a schematic structural diagram of an air guide plate according to an embodiment of the present invention; Figure 2 yes Figure 1 Another perspective schematic diagram of the air guide plate 50 is shown; Figure 3 yes Figure 1 A cross-sectional view of the wind deflector 50 shown; Figure 4 Schematic diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. In each figure, the wind direction of the air supply airflow is indicated by a solid arrow, and the direction of the ambient air inflow is indicated by a hollow arrow.

[0034] like Figures 1 to 4 As shown, the air guide plate 50 of the embodiment of the present invention may generally include an air guide plate body 51 and a wind lifting plate 52. The air guide plate body 51 is used to be rotatably mounted at the air outlet 12 of the shell 10 of the wall-mounted air conditioner indoor unit (rotate around the x-axis, the x-axis is marked in the figure). The function of the air guide plate 50 is to open and close the air outlet 12, and can also be used to adjust the air outlet angle of the air outlet 12. The airflow blown out from the inside of the shell 10 through the air outlet 12 is the supply airflow. When the air conditioner is cooling, the supply airflow is cold air; when the air conditioner is heating, the supply airflow is hot air.

[0035] The air guide body 51 is provided with a through flow outlet 515, and the flow outlet 515 passes through two side surfaces of the air guide body 51. When the air outlet 12 is closed, the side of the air guide body 51 facing the inside of the air outlet 12 is the first side, and its surface is the first side 511; the side facing the outside of the housing 10 is the second side, and its surface is the second side 512.

[0036] The wind-raising plate 52 extends from the first side surface 511 of the air guide plate body 51 toward the air outlet 12 gradually away from the first side surface 511 along the air flow direction, and the extension starting point is located on the upstream side of the air flow relative to the inlet 515, so that the supply air flow changes the air flow direction when passing through the wind-raising plate 52, and forms a negative pressure at the first side surface 511, thereby driving the ambient air on the other side of the air guide plate body 51 (i.e., the side where the second side is located) to merge into the supply air flow through the inlet 515.

[0037] That is to say, under the guidance of the wind-raising plate 52, the air supply airflow gradually moves away from the first side surface 511, which makes the airflow density at the first side surface 511 of the air guide plate body 51 smaller, forming a negative pressure area ( Figure 4 The S1 region in the figure roughly represents the range of the negative pressure region. Under the attraction of the negative pressure region, the ambient air on the second side of the air guide plate body 51 enters the negative pressure region through the air inlet 515 provided on the air guide plate body 51, and then merges into the supply air flow, forming a mixed air effect. When the air conditioner is cooling, the mixing of ambient air into the supply air flow can appropriately increase the temperature of the supply air flow; when the air conditioner is heating, the mixing of ambient air can appropriately reduce the temperature of the supply air flow, which makes the supply air flow more comfortable and realizes comfortable air supply of the air conditioner.

[0038] The wind-raising plate 52 is provided with a plurality of micropores 525 that pass through its two sides, so as to allow part of the ambient air to flow into the supply air flow through the drainage port 515 and the micropores 525 in turn. That is, due to the fast flow rate on the surface of the wind-raising plate 52, the air pressure is lower than the air pressure inside the micropores 525, forming a negative pressure area S2. After the ambient air enters the drainage port 515, a part of it will flow into the supply air flow through the micropores 525, which further increases the mixed air volume. The micropores 525 have a small aperture, for example, between 0.5-2 mm. A plurality of micropores 525 can be densely arranged on the surface of the wind-raising plate 52, for example, evenly distributed in a matrix. The opening rate of the wind-raising plate 52 (that is, the ratio of the opening area to the surface area of ​​one side of the wind-raising plate) is above 30%.

[0039] like Figure 3 As shown, the angle θ between the axis of each microhole 525 and the surface of the wind-raising plate 52 can be an acute angle, so that the direction of the ambient air flowing in is an acute angle with the flow direction of the supply air flow on the surface of the wind-raising plate 52. In this way, it can be ensured that the function of the microhole 525 is to make the ambient air flow into the supply air flow, rather than to make the supply air flow flow into the ambient air.

[0040] The present invention realizes the air mixing function by only opening an opening on the air guide plate 50 and adding a wind raising plate 52. The design is very clever, the structure is very simple, and the cost is low. Moreover, other structures of the wall-mounted air conditioner indoor unit do not need to be modified, which is very conducive to mass production and promotion.

[0041] When the air guide plate 50 plays an air mixing role, its first side surface 511 can be set upward. In this way, the wall-mounted air-conditioning indoor unit can take into account both the air outlet angle and the air volume. For example, in order to improve the comfort of air supply, when the wall-mounted air-conditioning indoor unit is cooling, it is usually hoped that the air guide plate will guide the cold air to blow out as vertically upward as possible. However, when the air guide plate of the conventional wall-mounted air-conditioning indoor unit is rotated to an upward blowing angle close to the limit, the angle between the air guide plate and the plane where the air outlet is located is too small, that is, the opening is very small (the opening of the air guide plate refers to the degree to which it opens the air outlet. When the air guide plate completely closes the air outlet, the opening is zero. When the air guide plate fully opens the air outlet (refer to Figure 5 ), the opening is 100%, and the air flow is smoothest), the air guide plate will seriously block the air outlet, and the air volume becomes very small. This limits the air guide angle range of the air guide plate. Especially when the air is guided vertically, it is difficult to take into account both the air guide angle and the air volume.

[0042] In the embodiment of the present invention, the wind lifting plate 52 can guide the wind upward. Therefore, when the wall-mounted indoor air conditioner is in cooling operation, it is not necessary to rotate the wind guide plate body 51 to a state that is too close to the vertical (i.e., close to the state of closing the air outlet), so as to ensure that the wind guide plate 50 has a sufficiently large opening to avoid affecting the air volume. In this way, the wall-mounted indoor air conditioner takes into account both the air supply angle and the air volume.

[0043] The end of the air guide body 51 close to the upstream of the air supply air flow is defined as the windward end (end B), and the end close to the downstream of the air supply air flow is defined as the outlet end (end A). The flow direction of the air supply air flow on the first side surface 511 of the air guide body 51 is toward the outlet end. The airflow upstream edge of the air guide port 515 refers to the edge of the air guide port 515 close to the windward end of the air guide body 51, and the other side of the air guide port 515 opposite to the airflow upstream edge (edge ​​C) is the airflow downstream edge (edge ​​D). Figure 2 and Figure 3 .

[0044] In some embodiments, the wind-raising plate 52 can include an extension from the upstream edge (C edge) of the airflow outlet 515, that is, the starting end of the wind-raising plate 52 is directly connected to the edge of the airflow outlet 515, making the connection transition section between the two smoother, which is conducive to better guiding the airflow.

[0045] like Figure 3 As shown, the projection of the wind-raising plate 52 on the first side 511 can at least cover the air outlet 515, so as to prevent the ambient air from directly entering the air supply airflow vertically through the air outlet 515, causing problems such as excessive noise. Furthermore, the end (end E) of the wind-raising plate 52 along the airflow direction can exceed the air outlet 515 (referring to the edge D of the airflow downstream of the air outlet 515), so as to define a drainage channel 516 connected to the air outlet 515 with the first side 511. The drainage channel 516 can guide the flow direction of the ambient air, so that when it merges with the air supply airflow, the angle between the two airflows is smaller, and the mixing is softer.

[0046] The projection of the wind-raising plate 52 on the first side surface 511 can be located within the range of the air guide body 51. In other words, the end (end E) of the wind-raising plate 52 is retracted a distance toward the upstream direction of the air supply airflow compared to the air outlet end (end A) of the air guide body 51. It can also be understood that a vertical line is drawn from the end of the wind-raising plate 52 to the first side surface 511 of the air guide body 51, and the foot of the vertical line will fall on the first side surface 511 itself rather than the extended surface of the first side surface 511. In this way, the section of the air guide body 51 protruding from the wind-raising plate 52 can guide and block the ambient air flowing out of the guide channel 516 to a certain extent, so that it can be better mixed with the air supply airflow, and it can also prevent the wind-raising plate 52 from contacting the upper edge of the air outlet 12 when the air guide body 51 closes the air outlet 12.

[0047] like Figure 1 and Figure 2As shown, the air guide plate 50 also includes a plurality of connecting ribs 522 arranged at intervals in a direction parallel to the rotation axis of the air guide plate body 51, and each connecting rib 522 connects the wind-raising plate 52 and the air guide plate body 51 to achieve a structural connection. In addition, the connecting ribs 522 can also split the ambient air to make the airflow softer. It can be understood that the connecting ribs 522 are located on the downstream side of the air supply airflow relative to the drainage port 515. In other words, the connecting ribs 522 divide the drainage channel 516 into a plurality of sub-channels. The wind-raising plate 52, the connecting ribs 522 and the air guide plate body 51 can be formed as an integral piece to facilitate processing and manufacturing.

[0048] Two of the multiple connecting ribs 522 can be connected between the two ends of the wind-raising plate 52 along the rotation axis direction of the wind guide plate body 51 and the first side surface 511 to close the gap between the two ends of the wind-raising plate 52 and the first side surface 511. This can prevent the airflow from flowing along the rotation axis direction of the wind guide plate body 51, thereby avoiding the occurrence of adverse vortices and noise.

[0049] like Figures 1 to 4 As shown, the wind-raising plate 52 can be made to be a curved plate with a central axis parallel to the rotation axis of the wind guide plate body 51 and a convex surface facing the wind guide plate body 51, so as to better guide the air flow upward.

[0050] The air deflector body 51 can be a long strip horizontally arranged in the length direction, and the rotation axis direction of the air deflector body 51 can be parallel to the length direction of the air deflector body 51. The air inlet 515 can be a long strip with a length direction parallel to the length direction of the air deflector body 51, so that the ambient air is basically mixed in at all places in the length direction of the air deflector body 51, so that the mixed air volume is larger. In addition, the air deflector body 51 as a whole can be a long arc plate with a concave first side surface 511. Of course, the air deflector body 51 as a whole can also be a flat plate.

[0051] In some alternative embodiments, the wind-raising plate 52 may not completely cover the air outlet 515 .

[0052] The invention also provides a wall-mounted air-conditioner indoor unit. Figure 5 yes Figure 4 The schematic diagram shows the state of the indoor unit of the wall-mounted air conditioner after the air guide plate is further opened.

[0053] like Figure 4 and Figure 5 As shown, the wall-mounted air conditioner indoor unit of the embodiment of the present invention may generally include a housing 10 and an air guide plate 50 of any of the above embodiments. The housing 10 is provided with an air inlet 11 and an air outlet 12. The air guide plate body 51 of the air guide plate 50 is rotatably mounted at the air outlet 12.

[0054] In some embodiments, Figures 1 to 4As shown, the air deflector 50 further includes at least one rotating arm 53, one end of which is connected to the driving device 70 located inside the housing 10, and the other end is connected to the air deflector body 51. Driven by the driving device 70, the rotating arm 53 drives the air deflector body 51 to rotate upward around the first end of the rotating arm 53 to close the air outlet 12, or rotate downward to open the air outlet 12. A plurality of rotating arms 53 may be provided, so that the plurality of rotating arms 53 are arranged at intervals along the length direction of the air deflector body 51. The driving device 70 includes a motor for directly or indirectly driving the rotating arm 53 to rotate.

[0055] like Figure 5 As shown, the air outlet 12 can be located at the lower front part of the housing 10 and opened toward the front and downward. The rotating arm 53 is a bent arm with a bent opening facing downward. The driving device 70 is installed at the bottom wall of the air duct 40.

[0056] The purpose of setting the bent arm is to make the first side surface 511 face the air outlet 12 at all angles when the air guide plate 50 opens the air outlet 12, so that the air supply airflow is guided by the first side surface 511, and the second side surface 512 faces away from the air outlet 12 so that it contacts the ambient air, which is conducive to realizing the air mixing function of the air guide plate 50. Moreover, the setting of the bent arm also facilitates the rotation of the air guide plate body 51 to the bottom of the housing 10 to completely avoid the air supply airflow blown out of the air outlet 12, that is, to completely open the air outlet 12 so that the air guide plate 50 does not block the airflow at all.

[0057] On this basis, one or more inner guide plates 80 may be provided at the air outlet 12, and the inner guide plates 80 may be rotatably installed at the air outlet 12 and located on the inner side of the air guide plate 50, so as to adjust the up and down air outlet direction of the air outlet 12. That is, the air guide plate 50 may play a greater role in opening and closing the air outlet and mixing the air, and the inner guide plate 80 may play a role in guiding the air and swinging the air up and down.

[0058] like Figure 4 As shown, the wall-mounted air conditioner indoor unit may include an evaporator 20, a fan 30, an air duct 40, and a swing blade 60. The evaporator 20 is used to perform heat exchange with the air entering the housing 10 from the air inlet 11 to form a supply air flow (specifically, cold air during cooling and hot air during heating). The inlet of the air duct 40 faces the evaporator 20, and the outlet is connected to the air outlet 12. The fan 30 may be a cross-flow fan, which is arranged at the inlet of the air duct 40 to promote air flow from the evaporator 20 to the air outlet 12. The swing blade 60 is used to swing the air left and right.

[0059] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. An air guide plate for a wall-mounted air conditioner indoor unit, comprising: The air guide plate body is used to be rotatably mounted at the air outlet of the wall-mounted air conditioner indoor unit, and the air guide plate body is provided with a through-flow outlet; and A wind-raising plate extends from the first side surface of the wind guide plate body toward the air outlet and gradually away from the first side surface along the airflow direction, and the extension starting point is located at the upstream side of the airflow relative to the air guide port, so that the air supply airflow changes the airflow direction when flowing through the wind-raising plate, and forms a negative pressure at the first side surface, thereby driving the ambient air on the other side of the wind guide plate body to merge into the air supply airflow through the air guide port; and The wind-raising plate is provided with a plurality of micro-holes penetrating through two sides thereof, so as to allow part of the ambient air to flow into the air supply airflow through the air inlet and the micro-holes in sequence; The wind-raising plate extends from the upstream edge of the airflow of the air guide port; The end of the wind-raising plate along the airflow direction exceeds the drainage port to define a drainage channel connected to the drainage port with the first side surface.

2. The wind deflector according to claim 1, wherein The included angle between the axis of each microhole and the surface of the wind-raising plate is an acute angle, so that the inflow direction of the ambient air and the flow direction of the supply air flow on the surface of the wind-raising plate form an acute angle.

3. The wind deflector according to claim 1, wherein The projection of the wind-raising plate on the first side surface at least covers the drainage port.

4. The wind deflector according to claim 1, further comprising: A plurality of connecting ribs are arranged at intervals along a direction parallel to the rotation axis of the wind guide plate body, and each of the connecting ribs connects the wind lifting plate and the wind guide plate body.

5. The wind deflector according to claim 3, wherein The projection of the wind-raising plate on the first side surface is located within the range of the wind guide plate body.

6. The wind deflector according to claim 1, wherein The wind-raising plate is an arc-shaped plate whose central axis is parallel to the rotation axis of the wind guide plate body and whose convex surface faces the wind guide plate body.

7. A wall-mounted air conditioner indoor unit, comprising: A housing having an air outlet; and An air deflector according to any one of claims 1 to 6, wherein the air deflector body is rotatably mounted at the air outlet.

8. The wall-mounted air conditioner indoor unit according to claim 7, wherein The air deflector further comprises at least one rotating arm, one end of the rotating arm is connected to the driving device located inside the shell, and the other end is connected to the air deflector body, so that under the drive of the driving device, the air deflector body is driven to rotate upward around the first end of the rotating arm to close the air outlet, or rotate downward to open the air outlet; and An inner guide plate is also installed at the air outlet and is located on the inner side of the air guide plate.

Images