WO2022247543A1

WO2022247543A1 - Wall-mounted air conditioner indoor unit

Info

Publication number: WO2022247543A1
Application number: PCT/CN2022/088538
Authority: WO
Inventors: 李英舒; 陈会敏; 王晓刚; 王永涛; 张鹏
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-05-27
Filing date: 2022-04-22
Publication date: 2022-12-01
Also published as: CN113217995A

Abstract

A wall-mounted air conditioner indoor unit, comprising a housing, which defines a front air outlet which is opened forwards and a lower air outlet which is opened downwards; and an air duct, provided in the housing and comprising a front air duct wall and a rear air duct wall which are provided in a front-back spaced manner, an outlet end of the front air duct wall and an outlet end of the rear air duct wall being respectively connected to the top edge of the front air outlet and the rear edge of the lower air outlet so as to guide airflow in the housing to the front air outlet and the lower air outlet. The housing comprises a separating portion which is located between the front air outlet and the lower air outlet so as to separate the front air outlet from the lower air outlet; the surfaces, facing the inner side of the housing and the indoor environment, of the separating portion are respectively an air guide surface and a non-air-guide surface, and the separating portion is provided with an airflow channel penetrating through the air guide surface and the non-air-guide surface so as to guide out part of the airflow in the housing. The wall-mounted air conditioner indoor unit in the present invention can effectively prevent condensation of the non-air-guide surface.

Description

Wall-mounted air conditioner indoor unit

technical field

The invention relates to the technical field of air conditioning, in particular to a wall-mounted air conditioner indoor unit.

Background technique

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

However, in order to achieve faster cooling and heating, it is unavoidable to need to carry out large-volume air supply. But, when the excessive cold wind or hot wind of wind speed directly blows human body, it will inevitably cause discomfort of human body. The human body is blown directly by cold wind for a long time and can also cause air-conditioning disease.

Therefore, how to realize the comfortable air supply of the air conditioner has become a technical problem to be solved urgently in the air conditioner industry.

Contents of the invention

The object of the present invention is to provide a wall-mounted air conditioner indoor unit that overcomes the above-mentioned problems or at least partially solves the above-mentioned technical problems.

The object of the present invention is to provide a wall-mounted air conditioner indoor unit that can meet the requirements of upward blowing of cold wind and downward blowing of hot air.

A further object of the present invention is to reduce the condensation of the airflow on the air-guiding surface of the partition.

In particular, the present invention provides a wall-mounted air conditioner indoor unit, which includes:

a housing defining a front air outlet opening forward and a lower air outlet opening downward; and

The air duct is arranged in the housing, and includes a front air duct wall and a rear air duct wall arranged at intervals front and back, and the outlet ends of the front air duct wall and the rear air duct wall are respectively connected to the top of the front air outlet. The edge is in contact with the rear edge of the lower air outlet, so as to guide the airflow in the housing to the front air outlet and the lower air outlet;

The housing includes a partition, which is located between the front air outlet and the lower air outlet to separate the two, and the surfaces of the partition facing the inside of the housing and the indoor environment are respectively wind guides. A surface and a non-wind-guiding surface, the partition part is provided with an airflow channel passing through the wind-guiding surface and the non-wind-guiding surface, so as to lead out part of the airflow in the housing.

Optionally, the partition is a hollow structure; and

The air-guiding surface is provided with a plurality of air inlet micro-holes communicating with the inner space of the partition, and the non-air-guiding surface is provided with a plurality of air-out micro-holes communicating with the inner space of the partition. The air inlet microholes, the internal space of the partition and the air outlet microholes together constitute the airflow channel.

Optionally, the partition is a solid structure, and is provided with a plurality of ventilation micro-holes passing through the wind-guiding surface and the non-wind-guiding surface, and the ventilation micro-holes constitute the airflow channel.

Optionally, the axes of the plurality of ventilation microholes extend obliquely downward from the rear to the front.

Optionally, the wall-mounted air conditioner indoor unit also includes:

a front wind deflector, rotatably arranged at the front air outlet, its pivot axis is located at its top end, and is adjacent to the upper side of the front air outlet; and

The lower wind deflector is rotatably arranged at the lower air outlet. When the lower wind deflector is in a horizontal state, the forward end is the first end, and the rearward end is the second end. The pivot axis of the wind deflector is adjacent to the first end, so that when the lower wind deflector rotates to a vertical state, the second end abuts against the front air duct wall.

Optionally, the wind guiding surface includes a concave arc section extending upwardly and gradually from the rear to the front.

Optionally, the wind deflecting surface sequentially includes from back to front:

a vertical section, facing rearwards, constituting the bottom section of the wind deflecting surface;

The concave arc section extends forward from the top of the vertical section and gradually slopes upward; and

The convex arc section at the top constitutes the top section of the wind guiding surface, and its rear end is smoothly connected with the upper end of the concave arc section.

Optionally, the section of the front air duct wall adjacent to its outlet end is curved downwardly, and the tangent line of the outlet end extends forward and upward; and

The section of the rear air duct wall adjacent to its outlet end is in a curved shape protruding forward, and the tangent line of the outlet end extends forward and downward or directly downward.

Optionally, the front air duct wall includes:

The volute tongue section, the front end of which constitutes the inlet end of the front air channel wall, and extends from the upper front to the lower rear;

a connecting section extending forward and downward from the rear end of the cochlear tongue section; and

The downward convex arc section extends forward from the rear end of the connecting section, and is in the shape of an arc convex downward.

Optionally, the rear air channel wall includes:

The main body section is in the shape of an arc protruding towards the rear, the upper end of which constitutes the inlet end of the rear air channel wall; and

The forward convex arc section extends obliquely forward and downward from the lower end of the main body section, and is in the shape of an arc convex forward.

In the wall-mounted air conditioner indoor unit of the present invention, the housing is provided with a front air outlet and a lower air outlet, and the front air outlet can better supply air to the front and the front and upward, and can realize the upward blowing of cold air during cooling. The lower air outlet is opened downward, which can better send air downward, and can realize hot air sinking and blowing when heating. Since the independent lower air outlet is set, the front air outlet does not need to blow air downward, and the upper edge of the front air outlet can be designed to be more upward, which is beneficial to upward air outlet. Moreover, in the present invention, the partition part has an air flow channel that runs through the air guide surface and the non-wind guide surface, so that part of the air flow in the housing can pass through the partition part and flow to the indoor environment, which can effectively prevent the air conditioner with high humidity. The airflow generates condensation on the non-wind-guiding surface.

Further, in the wall-mounted air conditioner indoor unit of the present invention, the air guide surface of the partition between the front air outlet and the lower air outlet includes a concave arc section that extends upwardly from the back to the front, which can better The airflow of the air duct is guided forward and upward, which enhances the effect of the upward wind from the front air outlet.

Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the section of the front wall of the air duct adjacent to the outlet end is in a curved shape protruding downward, and the tangent line of the outlet end extends forward and upward. When the air outlet blows air forward and upward (such as cooling mode), the airflow is in the Coanda effect (when there is surface friction between the fluid and the surface of the object it flows through (it can also be said to be fluid viscosity), as long as the curvature is not large, The fluid will flow along the surface of the object.) Under the action, when flowing forward along the surface of the front air duct wall, it will gradually rise, and the upward angle of the airflow will be larger. The cold air is blown out at a greater upward angle (the angle between the airflow blowing angle and the horizontal plane), avoiding the human body, and the cold air reaches the highest point and then scatter downwards to achieve a "shower-style" cooling experience.

Moreover, the section of the rear air duct wall adjacent to the outlet end of the air duct is in a curved shape protruding forward, and the tangent line of the outlet end extends forward and downward or directly below. , the airflow gradually slopes downward along the surface of the rear air duct wall, making the airflow direction closer to or reaching a vertical downward direction, so as to reach more of the ground and achieve a "carpet" air supply effect.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic sectional view of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

Fig. 2 is an enlarged schematic diagram of a partition in Fig. 1;

Fig. 3 is a schematic cross-sectional view of a partition in another embodiment of the present invention;

Fig. 4 is a schematic diagram of the outer peripheral outline of a partition according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the blowing-up mode;

Fig. 6 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the down blowing mode;

Fig. 7 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the maximum air outlet mode;

Fig. 8 is a schematic diagram of the air duct structure in an embodiment of the present invention.

Detailed ways

The wall-mounted air conditioner indoor unit according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 8 . Among them, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "horizontal", etc. are based on the The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention . Arrows in the figure indicate the flow direction of the airflow.

The terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "comprises or comprises" one or some of the features it encompasses, unless specifically stated otherwise, this indicates that other features are not excluded and that other features may be further included.

Unless otherwise expressly specified and limited, terms such as "mounted", "connected", "connected", "fixed" and "coupled" should be interpreted in a broad sense, for example, it may be a fixed connection or a detachable connection, or Integrate; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined . Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific situations.

An embodiment of the present invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is the indoor part of the split wall-mounted room air conditioner, and is used to adjust indoor air, such as cooling/heating, dehumidification, and introducing fresh air, etc.

Fig. 1 is a schematic sectional view of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention; Fig. 2 is an enlarged schematic view of a partition in Fig. 1 .

As shown in FIGS. 1 and 2 , the wall-mounted air conditioner indoor unit according to the embodiment of the present invention may generally include a housing 10 and an air duct 20 .

The casing 10 defines a front air outlet 121 opened forward and a lower air outlet 122 opened downward. The housing 10 defines an accommodating space for accommodating various components of the wall-mounted air conditioner indoor unit. The front air outlet 121 is used for blowing air to the front, the upper front and the lower front, and can be opened at the lower part of the front surface of the casing 10 . The lower air outlet 122 is used for blowing air downward, and can be opened on the bottom front of the housing 10 to be adjacent to the front air outlet 121 . The front air outlet 121 and the lower air outlet 122 are used to exhaust the airflow in the casing 10 to the indoor environment, so as to adjust the indoor air. The exhausted airflow refers to the airflow that is acted on by the fan in the casing 10 to accelerate the flow through the front air outlet 121 and the lower air outlet 122 for adjusting the indoor environment, such as cold air in cooling mode, and air in heating mode. The hot air and the fresh air flow in the fresh air mode, etc. The housing 10 can be in the shape of a long strip horizontally arranged in the length direction, the front air outlet 121 and the lower air outlet 122 can be in the shape of a strip whose length direction is parallel to the length direction of the housing 10, and the length direction of the housing 10 is perpendicular to that shown in Figure 1 of paper.

The air duct 20 is disposed in the casing 10 , and includes a front air duct wall 200 and a rear air duct wall 100 spaced apart from each other. The outlet ends of the front air channel wall 200 and the rear air channel wall 100 respectively connect with the top edge of the front air outlet 121 and the rear edge of the lower air outlet 122, so as to direct the airflow in the housing 10 to the front air outlet 121 and the lower air outlet. The air outlet 122, the air flow blows to the indoor environment through the front air outlet 121 and the lower air outlet 122, so as to complete the air conditioning of the indoor environment, such as cooling and heating.

The wall-mounted air conditioner indoor unit in the embodiment of the present invention may be an indoor part of a split wall-mounted room air conditioner that utilizes a vapor compression refrigeration cycle system for cooling/heating. As shown in FIG. 1 , a heat exchanger 30 and a fan 40 are provided inside the casing 10 . The heat exchanger 30 and the throttling device are connected with the compressor, the condenser and other refrigeration elements arranged in the outdoor casing of the air conditioner through pipelines to form a vapor compression refrigeration cycle system. Under the action of the fan 40, the indoor air enters the interior of the housing 10 through the air inlet 11 on the top of the housing 10, and after completing forced convection heat exchange with the heat exchanger 30, heat exchange air is formed, and then guided by the air duct 20 Blow down to the two air outlets. The fan 40 is preferably a cross-flow fan whose axis is parallel to the length direction of the casing 10 , and is arranged at the inlet of the air duct 20 . The heat exchanger 30 may be a three-stage heat exchanger.

As shown in FIG. 1 and FIG. 2 , the casing 10 further includes a partition 15 located between the front air outlet 121 and the lower air outlet 122 to separate them. The housing 10 can be in the shape of a strip, and its length direction is perpendicular to the paper surface of FIG. 1 .

In the embodiment of the present invention, the housing 10 is provided with a front air outlet 121 and a lower air outlet 122. The front air outlet 121 can better supply air to the front and the front and upward, and can realize the upward blowing of cold air during cooling. The lower air outlet 122 is opened downward, which can better send air downward, and can realize the downward blowing of hot air during heating. And because the independent lower air outlet 122 is set, the front air outlet 121 does not need to blow air downwards, so the upper edge of the front air outlet 121 can be designed more upwards, which is conducive to upward air outlet.

The outer peripheral surface of the partition 15 includes multiple parts, wherein the surface facing the inside of the housing 10 is the wind guiding surface 153 , and the surface facing the indoor environment is the non-wind guiding surface (for example, FIG. 2 includes non-wind guiding surfaces 151 and 152 ). The partition 15 is provided with an air flow channel passing through the air guide surface 153 and the non-air guide surfaces 151 , 152 to guide part of the air flow inside the casing 10 .

The inventors found that since the partition 15 is located at the outlet of the air duct 20 and is directly blown by the cold wind, the temperature is relatively low, and the water vapor in the air is easy to condense on its surface, resulting in condensation. The non-wind-guiding

surfaces

151 and 152 of the partition 15 are more likely to accumulate condensation since there is no airflow blowing over them. In the embodiment of the present invention, by setting the above-mentioned airflow channel, the air supply airflow is led out, so that the airflow blows out from the non-wind guiding surfaces 151 and 152, forming a disturbed flow field, so that the nearby cannot effectively form and accumulate condensation, and avoid large condensation However, if it drips into the indoor environment, it will affect the user experience.

In some embodiments, as shown in FIG. 3 , the partition 15 is a hollow structure, or called a shell structure. The air guide surface 153 is provided with a plurality of air inlet microholes 1501 connected to the interior space 150 of the partition, and the non-air guide surfaces 151 and 152 are provided with a plurality of air outlet microholes 1502 connected to the interior space 150 of the partition. In this way, the air inlet microholes 1501 , the internal space of the partition 150 and the air outlet microholes 1502 jointly constitute the aforementioned "air guiding channel through the air guiding surface and the non-wind guiding surface".

The air inlet microholes 1501 and air outlet microholes 1502 are preferably round holes to facilitate processing, and their diameters are preferably less than 1 cm, and more preferably less than 0.5 cm, so as to avoid condensation and avoid excessive airflow here affecting the air conditioner normal air supply. The opening ratio of the non-wind guiding surfaces 151 and 152 (total area of all holes/total area of the non-wind guiding surfaces) is preferably between 30% and 60%, and the same is true for the opening ratio of the wind guiding surface 153 .

Fig. 3 is a schematic cross-sectional view of a partition in another embodiment of the present invention. In other embodiments of the present invention, referring to FIG. 3 , the partition 15 is a solid structure, and is provided with a plurality of ventilation micro-holes 1503 that run through the wind-guiding surface 153 and the non-wind-guiding

surfaces

151, 152, that is, each ventilation micro-hole 1503 both run through the wind guiding surface 153 and the non-wind guiding surface 151 (or the non-wind guiding surface 152 ). The ventilation microholes 1503 constitute the aforementioned airflow channel.

As shown in FIG. 3 , the axes of the plurality of ventilation microholes 1503 can be inclined downward gradually from the back to the front, so as to be similar to the overall direction of the air duct 20 , so that the airflow can enter the ventilation microholes 1503 more easily. The opening ratio of the non-wind-guiding surfaces 151 and 152 (total area of all ventilation micropores 1503/total area of the non-wind-guiding surface) is preferably between 30% and 60%, and the same is true for the opening ratio of the wind-guiding surface 153 . Ventilation microholes 1503 are preferably round holes to facilitate processing, and their diameter is preferably less than 1 cm, more preferably less than 0.5 cm, so as to avoid condensation and prevent excessive airflow from affecting the normal air supply of the air conditioner.

Fig. 4 is a schematic diagram of an outer peripheral outline of a partition according to an embodiment of the present invention. This figure only shows the outer peripheral outline of the partition 15, and does not show its opening structure. Fig. 5 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the blowing-up mode;

As shown in FIG. 1 , FIG. 4 and FIG. 5 , in some embodiments, the wind guiding surface 153 includes an inner concave arc segment LM extending obliquely upward from the rear to the front. The inner concave arc section LM means that its central axis is located at the back and upper side, and the middle part is recessed toward the inner side of the partition part 15 compared with the two ends.

Moreover, the air guide surface 153 of the partition 15 between the front air outlet 121 and the lower air outlet 122 includes an inner concave arc section LM extending obliquely upwards from the rear to the front, which can better direct the airflow of the air duct 20 toward The front upper guide enhances the upward air outlet effect of the front air outlet 121.

In some embodiments, as shown in FIG. 4 , the wind guiding surface 153 sequentially includes a vertical segment KL, an inner concave arc segment LM, and a top outer convex arc segment MN from back to front. Wherein, the vertical section KL faces rearward, constituting the bottom section of the wind guiding surface 153 . The concave arc section LM extends forward from the top of the vertical section KL and gradually slopes upward. The top convex arc section MN constitutes the top section of the wind guiding surface 153 , and its rear end is smoothly connected with the upper end of the concave arc section LM. By arranging the wind guiding surface 153 in such a special shape, the upward wind guiding capability of the wind guiding surface 153 can be enhanced and the air flow loss can be reduced. Rounded transitions can be used between the vertical segment KL and the concave arc segment LM to make the transition more gentle.

Fig. 6 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the down blowing mode; Fig. 7 is a schematic diagram of the indoor unit of the wall-mounted air conditioner shown in Fig. 1 operating in the maximum air outlet mode.

In some embodiments, as shown in FIGS. 1 to 7 , the wall-mounted air conditioner indoor unit further includes a front air deflector 50 and a lower air deflector 60 . Wherein, the front air deflector 50 is rotatably arranged at the front air outlet 121 for opening or covering the front air outlet 121 and guiding the air outlet direction of the front air outlet 121 . The lower air deflector 60 is rotatably disposed at the lower air outlet 122 for opening or covering the lower air outlet 122 and guiding the air outlet direction of the lower air outlet 122 . Two motors are installed in the casing 10 to drive the front wind deflector 50 and the lower wind deflector 60 to rotate respectively.

When the air conditioner stops running, the front wind deflector 50 can be rotated to be in or close to the vertically extending closed state, and the lower wind deflector 60 can be rotated to be in or close to the horizontally extended closed state, as shown in Figure 1. When the air conditioner needs to perform an upward blowing mode (such as a cooling mode), the front air deflector 50 can be rotated to a state of gradually inclining upward from the rear to the front, and the lower air deflector 60 can be rotated to a closed state or gradually incline upward from the rear to the front. State, as shown in FIG. 5 , to cooperate with the front air duct wall 200 to jointly guide the airflow forward and upward. When the air conditioner needs to perform a downward blowing mode (such as a heating mode), the front air deflector 50 can be rotated to the closed state, and the lower air deflector 60 can be rotated to a vertically extending state to cooperate with the rear air duct wall 100 to jointly divert the airflow. Guide directly downward, as shown in Figure 6. When the air conditioner needs to speed up the air conditioning speed, the maximum air outlet mode can be operated, that is, the front wind deflector 50 and the lower wind deflector 60 are rotated to a state of gradually tilting downward from the rear to the front, and the two are parallel or nearly parallel. Make the air flow the smoothest and the air volume the largest, as shown in Figure 7.

Preferably, the pivot axis x of the front wind deflector 50 is located at its top and adjacent to the upper side of the front air outlet 121, so that when the air conditioner operates in the upward blowing mode, the front wind deflector 50 can be rotated completely away from the front of the front air outlet 121 without The upward flow of the airflow is hindered, and the upward guiding function of the partition 15 is fully exerted, as shown in FIG. 5 . When the lower wind deflector 60 is in a horizontal state, the forward end is the first end, and the rearward end is the second end. It is preferable to make the pivot axis y of the lower wind deflector 60 adjacent to the first end, so as to guide the wind downward. When the plate 60 is rotated to the vertical state, the second end is made to lean against the front air duct wall 200, so that most of the air flow is blocked by the lower air deflector 60 on the rear side, and the lower air deflector 60 better guides the air flow downward. Blow, as shown in Figure 6.

Fig. 8 is a schematic diagram of the structure of the air duct 20 in one embodiment of the present invention.

As shown in FIG. 8 , in some embodiments, the section of the front air channel wall 200 adjacent to its outlet end is curved downwardly, and the tangent line C1 of the outlet end extends forward and upward. Moreover, the section of the rear air duct wall 100 adjacent to its outlet end is in a curved shape protruding forward, and the tangent line C2 of the outlet end extends forward and downward or directly downward.

According to the Coanda effect, when there is surface friction between the fluid and the surface of the object it flows through (it can also be said to be fluid viscosity), as long as the curvature is not large, the fluid will flow along the surface of the object. Since the outlet section of the front air duct wall 200 adopts the above-mentioned shape, when the front air outlet 121 blows air forward and upward (such as cooling mode), the airflow will flow forward along the surface of the front air duct wall 200 under the Coanda effect. When the air conditioner is cooling and blowing upwards, it is beneficial to increase the upward angle of the airflow, so that the cold air will be blown out at a larger upward angle (the angle between the airflow blowing angle and the horizontal plane), avoiding the human body, and the cold wind After reaching the highest point, it is scattered downward to achieve a "shower" cooling experience.

Similarly, since the section of the rear air duct wall 100 of the air duct 20 adjacent to its outlet end is curved and protrudes forward, and the tangent line of the outlet end extends forward and downward or directly below, when the lower air outlet 122 blows air downward ( For example, heating mode), the airflow gradually flows downward along the surface of the rear air channel wall 100, so that the airflow direction is closer to or reaches the vertical downward direction, so as to reach the ground more, and realize a "carpet type "Blowing air effect.

Specifically, as shown in FIG. 8 , the front air duct wall 200 includes a volute tongue segment EF, a connecting segment FG and a downward convex arc segment GJ. Wherein, the front end of the volute tongue section EF constitutes the inlet end of the front air duct wall 200 and extends from the upper front to the lower rear. The volute tongue segment EF is opposite to the fan 40 . The connecting segment FG extends forward and downward from the rear end of the lingual segment EF. The downward convex arc section GJ extends forward from the rear end of the connecting section FG, and is an arc convex downward (that is, the axis of the arc is located above it), and the axis of the arc is parallel to the length of the housing 10 Direction, that is, the direction perpendicular to the paper in Figure 8. The front end of the downward convex arc segment GJ constitutes the outlet end of the front air channel wall 200 and the tangent line C1 extends forward and upward. Rounded corner transitions can be used between adjacent sections to reduce the resistance loss of the airflow, and also make the airflow turn more smoothly, which is beneficial to enhance the wall attachment effect of the airflow. The connecting segment FG can be a straight line segment, and the value range of the angle θ between it and the horizontal direction is 20°≤θ≤30°, so that the turning angle between it and the downward convex arc segment GJ is the most reasonable, and avoids the Too large causes the airflow to stay away from the surface of the downward convex arc segment GJ. The radius value range of the downward convex arc segment GJ is preferably 100mm≤R≤300mm, so as to enhance the airflow attachment effect and avoid the airflow away from the surface of the downward convex arc segment GJ due to too large turning angle.

As shown in FIG. 8 , the rear air duct wall 100 includes a main body section AB and a forward convex arc section BC. Wherein, the main body section AB is in the shape of an arc protruding backward, and its upper end constitutes the inlet end of the rear air duct wall 100 . The main body section AB half-encloses the fan 40 on its rear side. The forward convex arc segment BC extends obliquely forward and downward from the lower end of the main body segment AB, and is in the shape of an arc convex forward. The arc axes of the main body section AB and the front convex arc section BC are parallel to the length direction of the housing 10 .

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A wall-mounted air conditioner indoor unit, comprising:

a housing defining a front air outlet opening forward and a lower air outlet opening downward; and

The air duct is arranged in the housing, and includes a front air duct wall and a rear air duct wall arranged at intervals front and back, and the outlet ends of the front air duct wall and the rear air duct wall are respectively connected to the top of the front air outlet. The edge is in contact with the rear edge of the lower air outlet, so as to guide the airflow in the housing to the front air outlet and the lower air outlet;

The housing includes a partition, which is located between the front air outlet and the lower air outlet to separate the two, and the surfaces of the partition facing the inside of the housing and the indoor environment are respectively wind guides. A surface and a non-wind-guiding surface, the partition part is provided with an airflow channel passing through the wind-guiding surface and the non-wind-guiding surface, so as to lead out part of the airflow in the housing.
The wall-mounted air conditioner indoor unit according to claim 1, wherein,

the partition is a hollow structure; and

The air-guiding surface is provided with a plurality of air inlet micro-holes communicating with the inner space of the partition, and the non-air-guiding surface is provided with a plurality of air-out micro-holes communicating with the inner space of the partition. The air inlet microholes, the internal space of the partition and the air outlet microholes together constitute the airflow channel.
The wall-mounted air conditioner indoor unit according to claim 1 or 2, wherein,

The partition is a solid structure, and is provided with a plurality of ventilation microholes passing through the wind guiding surface and the non-wind guiding surface, and the ventilation microholes constitute the airflow channel.
The wall-mounted air conditioner indoor unit according to claim 3, wherein,

Axes of the plurality of ventilation micro-holes extend obliquely downward from the rear to the front.
The wall-mounted air conditioner indoor unit according to any one of claims 1-4, further comprising:

a front wind deflector, rotatably arranged at the front air outlet, its pivot axis is located at its top end, and is adjacent to the upper side of the front air outlet; and

The lower wind deflector is rotatably arranged at the lower air outlet. When the lower wind deflector is in a horizontal state, the forward end is the first end, and the rearward end is the second end. The pivot axis of the wind deflector is adjacent to the first end, so that when the lower wind deflector rotates to a vertical state, the second end abuts against the front air duct wall.
The wall-mounted air conditioner indoor unit according to any one of claims 1-5, wherein,

The wind guiding surface includes a concave arc section extending upwardly and gradually from the rear to the front.
The wall-mounted air-conditioning indoor unit according to claim 6, wherein, the air guide surface sequentially includes:

a vertical section, facing rearwards, constituting the bottom section of the wind deflecting surface;

The concave arc section extends forward from the top of the vertical section and gradually slopes upward; and

The convex arc section at the top constitutes the top section of the wind guiding surface, and its rear end is smoothly connected with the upper end of the concave arc section.
The wall-mounted air conditioner indoor unit according to any one of claims 1-7, wherein,

The section of the front air duct wall adjacent to its outlet end is curved and convex downward, and the tangent line of the outlet end extends forward and upward; and

The section of the rear air duct wall adjacent to its outlet end is in a curved shape protruding forward, and the tangent line of the outlet end extends forward and downward or directly downward.
The wall-mounted air conditioner indoor unit according to claim 8, wherein the front air duct wall comprises:

The volute tongue section, the front end of which constitutes the inlet end of the front air channel wall, and extends from the upper front to the lower rear;

a connecting section extending forward and downward from the rear end of the cochlear tongue section; and

The downward convex arc section extends forward from the rear end of the connecting section, and is in the shape of an arc convex downward.
The wall-mounted air conditioner indoor unit according to claim 8, wherein the rear air duct wall comprises:

The main body section is in the shape of an arc protruding towards the rear, the upper end of which constitutes the inlet end of the rear air channel wall; and

The forward convex arc section extends obliquely forward and downward from the lower end of the main body section, and is in the shape of an arc convex forward.