WO2022037723A1

WO2022037723A1 - Wall-mounted air conditioner indoor unit

Info

Publication number: WO2022037723A1
Application number: PCT/CN2021/124123
Authority: WO
Inventors: 李英舒; 陈会敏; 吴丽琴; 王永涛
Original assignee: 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2020-08-19
Filing date: 2021-10-15
Publication date: 2022-02-24
Also published as: CN114076353A

Abstract

A wall-mounted air conditioner indoor unit, comprising: a housing (10), provided with a heat exchange airflow outlet (11) extending in the horizontal direction of the housing (10), and internally provided with a heat exchanger (20) and a fan (30), such that a heat exchange airflow in the housing is discharged from the heat exchange airflow outlet (11) by means of the fan (30); a jet air duct (40) provided with a jet air outlet (41) extending along the horizontal direction of the housing, and the jet air duct (40) and the housing (10) being arranged at an interval to form a guiding duct (80) between the heat exchange airflow outlet (11) and the jet air outlet (41); and a jet fan (50) communicating with the jet air duct (40), such as to controllably drive air outside the wall-mounted air conditioner indoor unit to flow towards the jet air duct (40), and to be sent out from the jet air outlet (41), such that natural air flowing out from the jet air outlet (41) without experiencing heat exchange and natural air flowing out along the guiding duct (80) without experiencing heat exchange are mixed with the heat exchange airflow flowing out of the heat exchange airflow outlet (11), thereby increasing the overall induced air volume and overall supplied air volume of the wall-mounted air conditioner indoor unit.

Description

Wall-mounted air conditioner indoor unit

technical field

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

Background technique

With the popularization of air conditioners, users have higher and higher requirements for air supply comfort and health. For the traditional wall-mounted air conditioner indoor unit, air volume and noise are two contradictory parameters, so the maximum air output is limited to a certain range. Moreover, the temperature of the cold air blown by the air conditioner is low, and it will cause physical discomfort and affect the user experience when it blows directly to the person.

For this reason, some existing wall-mounted air conditioner indoor units have designed the air supply scheme of jet flow and drainage, mainly by adding an additional air induction module on the rear side outside the casing. The fan drives the indoor air to flow to the jet channel located under the casing after passing through the purification components, connecting pipes and multiple air outlets. The bottom of the jet channel is provided with an air inlet. When the induced draft fan is running, some indoor air flows through the bottom air inlet under the action of negative pressure. Flowing into the jet channel, the two indoor air flows to the jet channel are sent out through the air outlet of the jet channel and mixed with the heat exchange air flow sent by the wall-mounted air conditioner indoor unit, thereby increasing the induced air volume to a certain extent. However, the air inlet is opened at the bottom of the jet channel, and the air volume introduced at the air inlet only depends on the negative pressure generated inside the jet channel. It is conceivable that the negative pressure generated by the air supply inside the jet channel is very small. The amount of induced air at the tuyere is also very small, and the increase in the overall air supply volume of the wall-mounted air conditioner indoor unit is not obvious.

SUMMARY OF THE INVENTION

One object of the present invention is to overcome at least one defect of the prior art, and to provide a wall-mounted air conditioner indoor unit with a large amount of induced air.

A further object of the present invention is to improve the air outlet uniformity of the wall-mounted air conditioner indoor unit.

Another further object of the present invention is to keep the wall-mounted air conditioner indoor unit light and beautiful.

In order to achieve the above purpose, the present invention provides a wall-mounted air conditioner indoor unit, which includes:

The casing is provided with a heat exchange airflow outlet extending along the lateral direction of the casing, and a heat exchanger and a fan are arranged inside the casing, so as to promote the heat exchange airflow in the casing to pass through the The heat exchange air outlet is sent out;

A jet air duct is provided with a jet air outlet extending laterally of the casing, and the jet air duct is spaced from the casing so as to be between the heat exchange air outlet and the jet air outlet forming a drainage duct; and

a jet fan, communicated with the jet air duct, so as to controllably drive the air outside the wall-mounted air conditioner indoor unit to flow to the jet air duct and send it out through the jet air outlet, so that the air flows out through the jet The unheated natural air flowing out of the tuyere is mixed with the unheated natural air flowing out through the drainage air duct and the heat exchange air flow sent out through the heat exchange airflow outlet.

Optionally, the heat exchange airflow outlet is opened at the bottom of the front side of the casing, and the jet air outlet is opened at the front side of the jet air duct; and

The jet air duct is disposed below the casing at a distance from the casing, so as to form the drainage air duct above the jet air duct and below the casing.

Optionally, the jet fan communicates with a lateral end of the jet air duct adjacent to the jet fan, so as to transport natural air into the jet air duct in the lateral direction; and

The interior of the jet air duct defines an air outlet cavity that communicates with the jet air outlet and an air collection cavity that is located at the rear side of the air outlet cavity and communicated with the jet fan, so that the jet air duct flows into the jet air duct. The natural air flows through the air collecting chamber and the air outlet chamber in sequence and then is sent out from the jet outlet, and the air outlet chamber is tapered from the back to the front.

Optionally, the air duct wall of the jet air duct used to define the top of the air outlet cavity extends obliquely downward from the back to the front, and the air duct wall of the jet air duct is used to define the air at the bottom of the air outlet cavity. The road wall extends straight from the back to the front.

Optionally, the inclination angle of the air duct wall of the jet air duct for defining the top of the air outlet cavity is set so that the height of the jet air outlet in the vertical direction is the same as that of the air outlet cavity in the vertical direction. The ratio between the maximum heights in the directions is any ratio in the range of 1:5 to 1:3.

Optionally, the ratio between the depth of the air outlet cavity extending in the front-rear direction and the depth of the jet air duct extending in the front-rear direction is any ratio in the range of 1:2 to 3:4.

The interior of the jet air duct is provided with a plurality of air guide ribs arranged at intervals along the lateral direction, so as to guide the natural air flowing into the jet air duct in the lateral direction to the jet outlet.

Optionally, the rib has a convex and curved shape toward the side away from its windward surface.

Optionally, the jet fan is arranged on one of the lateral sides in the casing, and includes a centrifugal fan and a centrifugal volute located outside the centrifugal fan, and the centrifugal volute and the jet air duct are connected. airtightly communicated through the air guide channel; and

The air guide passage first bends and extends to the lateral outer side of the casing from top to bottom, and then bends and extends to the lateral inner side of the casing, so as to be in smooth communication with the centrifugal volute and the jet air passage at the same time .

Optionally, the casing further includes a frame for supporting the heat exchanger and the fan, and the jet fan is arranged on one of the lateral sides in the casing and is in the lateral direction of the frame. On the outside, the fan is a cross-flow fan whose rotating shaft extends laterally of the casing; and

A jet air inlet communicated with the air inlet of the jet fan is opened on the lateral side plate of the casing adjacent to the jet fan, so as to allow the air outside the wall-mounted air conditioner indoor unit to pass through the jet The air inlet flows to the jet fan; the top of the casing is provided with a main air inlet, and the heat exchanger is arranged on the air flow path between the main air inlet and the fan to communicate with the main air inlet through the main air inlet. The air flow entering the casing through the air inlet conducts heat exchange.

The wall-mounted air conditioner indoor unit of the present invention has a jet air duct and a jet fan, and the jet fan can actively inject external air into the jet air duct. Set the active jet of the jet fan, the jet air volume is greatly improved, and the air supply distance is increased. In addition, the jet air duct is spaced from the casing, so that a drainage air duct is formed between the heat exchange air outlet and the jet outlet. That is to say, the two sides of the drainage air duct are the heat exchange air outlet and the jet outlet respectively. Negative pressure will be generated on both sides of the drainage duct due to the air supply from the heat exchange airflow outlet and the jet outlet. The natural air is mixed with the natural air sent out through the jet outlet and the heat exchange air flow sent out through the heat exchange air outlet, thereby further improving the overall draft air volume and overall air supply volume of the wall-mounted air conditioner indoor unit.

Further, since the jet air outlet is located at the front side of the jet air duct and extends laterally, and the jet fan is communicated with one of the lateral ends of the jet air duct, the flow direction of the air flowing into the jet air duct is the same as the flow direction of the air flowing out of the jet air duct. They are perpendicular to each other. Therefore, how to ensure the uniformity of the jet air outlet in the lateral direction is the design difficulty and design focus. For this reason, the present application is provided with a plurality of guide ribs arranged at intervals along the lateral direction in the jet air duct, and the natural air flowing laterally in the jet air duct can be more uniformly guided to the jet outlet air outlet through the guide ribs, so that the air flow from The heat exchange air flowing out of any place of the heat exchange air outlet can be mixed with the natural air flowing out from the jet air outlet, thereby improving the air outlet uniformity of the wall-mounted air conditioner indoor unit in terms of air outlet temperature and air volume.

Further, the jet fan is arranged on one of the lateral sides in the casing, and only a space for accommodating the jet fan needs to be left in one of the lateral sides in the casing, without occupying the space in the front-rear direction of the casing, There is also no need for fan shielding. On the one hand, it is ensured that the casing of the entire wall-mounted air conditioner indoor unit is still intact, so that it can maintain a good aesthetic effect. Slightly longer, other aspects are the same as traditional hanging hooks, and it is still very light.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the 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 example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

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

3 is a schematic structural diagram of the wall-mounted air conditioner indoor unit after the casing is hidden according to an embodiment of the present invention;

4 is a schematic cross-sectional view of a longitudinal section of a jet air duct extending in the front-rear direction according to another embodiment of the present invention;

5 is a schematic cross-sectional view of a jet air duct taken along a horizontal section according to other embodiments of the present invention;

FIG. 6 is a schematic enlarged view of part A in FIG. 5 .

detailed description

The present invention provides a wall-mounted air conditioner indoor unit, which is generally an air conditioner indoor unit that is hung on a wall or other supporting positions. 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. Referring to FIGS. 1 and 2 , the wall-mounted air conditioner indoor unit 1 involved in the present invention includes a casing 10 on which a heat exchange airflow outlet 11 extending laterally of the casing 10 is opened, and a heat exchanger 20 and a heat exchanger 20 and The fan 30 and the heat exchanger 20 can exchange heat with the air flow passing therethrough, thereby generating the heat exchange air flow. The fan 30 can promote the heat exchange airflow in the casing 10 to be sent out through the heat exchange airflow outlet 11 . Specifically, the cabinet 10 may include a cover 13 on the rear side, a front panel 14 on the front side, and two end plates 16 on both lateral sides, the cover 13 , the front panel 14 and the two end plates 16 are matched connect.

Fig. 3 is a schematic structural diagram of the wall-mounted air conditioner indoor unit according to an embodiment of the present invention after the casing is hidden. Referring to FIGS. 2 and 3 , the wall-mounted air conditioner indoor unit 1 further includes a jet air duct 40 and a jet fan 50 . The jet air duct 40 is provided with a jet air outlet 41 extending in the lateral direction of the casing 10 to expand the air supply range of the wall-mounted air conditioner indoor unit 1 in the lateral direction. The lengths of the heat exchange air outlet 11 and the jet outlet 41 extending in the lateral direction are approximately the same, so as to improve the mixing effect between the two air streams sent from the two air outlets. In particular, the jet air duct 40 is spaced apart from the casing 10 to form a drainage air duct 80 between the heat exchange airflow outlet 11 and the jet air outlet 41 . The jet fan 50 is communicated with the jet air duct 40 to controllably drive the air outside the wall-mounted air conditioner indoor unit 1 to flow to the jet air duct 40 and send it out through the jet air outlet 41 , so that the air flowing out of the jet air outlet 41 is free from untreated air. The heat-exchanged natural air is mixed with the unheat-exchanged natural air flowing out through the air duct 80 and the heat-exchange airflow sent out through the heat-exchange airflow outlet 11 .

The wall-mounted air conditioner indoor unit 1 of the present invention has a jet air duct 40 and a jet fan 50. The jet fan 50 can actively inject external air into the jet air duct 40. Compared with the prior art, only negative pressure passive drainage is used. In the present application, by setting the jet fan 50 to actively jet, the jet air volume is greatly increased, and the air supply distance is increased. In addition, the two sides of the drainage air duct 80 are the heat exchange air outlet 11 and the jet outlet 41 respectively. With the air supply from the heat exchange air outlet 11 and the jet outlet 41, negative pressure will be generated on both sides of the drainage air duct 80. Therefore, under the action of negative pressure on both sides, the air flow introduced into the drainage air duct 80 is relatively large, and the natural air introduced through the drainage air duct 80 and the natural air sent out through the jet outlet 41 and the heat exchange airflow outlet 11 are sent out. The heat exchange air flows are mixed, thereby further improving the overall air intake volume and the overall air supply volume of the wall-mounted air conditioner indoor unit 1 . It should be noted that the natural air referred to in the present invention means air that has not undergone heat exchange.

In some embodiments, the heat exchange airflow outlet 11 is opened at the bottom of the front side of the casing 10 , the jet air outlet 41 is opened at the front side of the jet air duct 40 , and the jet air duct 40 is arranged on the casing 10 at intervals from the casing 10 . below. That is to say, the jet air duct 40 is disposed below the casing 10 and is disposed at a certain distance from the casing 10 . Therefore, the heat exchange air outlet 11 at the bottom of the front side of the casing 10 can be arranged adjacent to the jet air outlet 41 at the front side of the jet air duct 40 , so that the heat exchange air flow sent from the heat exchange air outlet 11 and the jet air outlet 41 can be arranged adjacent to each other. The natural air sent out by the air outlet 41 is better mixed, thereby ensuring a softer air outlet from the wall-mounted air conditioner indoor unit 1 .

Further, a drainage air duct 80 is formed above the jet air duct 40 and below the casing 10 . That is, the drainage air duct 80 is an air duct formed by the gap between the jet air duct 40 and the casing 10 . Thereby, the heat exchange air flow sent out by the heat exchange air flow outlet 11, the natural air sent out by the jet outlet 41, and the natural air sent out by the drainage air duct 80 are close to each other, which is convenient for better mixing into a soft wind.

In some embodiments, the jet fan 50 communicates with a lateral end of the jet air duct 40 adjacent to the jet fan 50 to transport natural air into the jet air duct 40 in the lateral direction. However, since the jet air outlet 41 is located at the front side of the jet air duct 40 and extends laterally, the flow direction of the air flowing into the jet air duct 40 is perpendicular to the flow direction of the air flowing out of the jet air duct 40 . That is, the airflow needs to be reversed by approximately 90 degrees in the jet air duct 40 .

4 is a schematic cross-sectional view of a longitudinal section of a jet air duct extending in the front-rear direction according to another embodiment of the present invention. In order to ensure the uniform air outlet of the jet outlet 41 in the lateral direction, in some embodiments, the jet air duct 40 defines an outlet cavity 43 which is communicated with the jet outlet 41 and is located at the rear side of the outlet chamber 43 and is connected with the jet outlet 41 . The air collecting cavity 44 communicated with the jet fan 50 makes the natural air flowing into the inlet air duct 40 flow through the air collecting cavity 44 and the air outlet cavity 43 in sequence and then sent out from the jet outlet 41 . That is to say, the natural air driven by the jet fan 50 first flows into the air collecting chamber 44, and then flows to the air outlet chamber 43, and the static pressure can be increased through the air collecting chamber 44, thereby ensuring a large amount of induced air while flowing into the collecting chamber in the lateral direction. The airflow direction of the air cavity 44 is corrected to flow out of the air collecting cavity 44 and into the air outlet cavity 43 in the front and rear directions, so as to facilitate the airflow to be sent out through the jet outlet 41 on the front side, reduce the airflow resistance, and also facilitate the jet outlet 41 A more even air outlet is formed.

Further, the air outlet cavity 43 is tapered from the rear to the front. When the air flows through the air outlet cavity 43 , the flow area gradually decreases, and the flow velocity gradually increases, thereby increasing the flow velocity of the air flowing out of the jet outlet 41 .

In some embodiments, the air collecting cavity 44 defined in the interior of the jet air duct 40 is a flat cavity placed horizontally. On the one hand, the air collecting cavity 44 can flow into the jet air duct from one of the lateral ends of the jet air duct 40 . The natural air in 40 provides a flow space with a larger cross-section, which is convenient for it to flow to the other lateral end of the jet air duct 40 under the condition of less flow resistance, so as to facilitate the formation of a relatively uniform outlet in the lateral direction of the jet outlet 41. On the other hand, the flow area of the opening at the front end of the air collecting cavity 44 is relatively small, so that the natural air flowing from the air collecting cavity 44 to the air outlet cavity 43 has a relatively high flow rate.

In some embodiments, the air duct wall 40a of the jet air duct 40 used to define the top of the air cavity 43 extends obliquely downward from the rear to the front, and the air duct of the jet air duct 40 used to define the bottom of the air cavity 43 Wall 40b extends straight from rear to front. Since the drainage air duct 80 is located above the jet air duct 40 , the air duct wall 40a of the jet air duct 40 used to define the top of the air cavity 43 is also used to define the bottom of the drainage air duct 80 . The air duct 80 has a straight section 81 at the rear and a gradually expanding section 82 at the front of the straight section. The flow area of the expanding section 82 gradually expands from the back to the front to expand the air supply range. .

In some embodiments, the inclination angle of the air duct wall 40a of the jet air duct 40 for defining the top of the air cavity 43 is set so that the vertical height H1 _of the jet air outlet 41 and the air outlet cavity 43 are in the vertical direction. The ratio between the maximum heights _H2 in the vertical direction is any ratio in the range of 1:5 to 1:3. In this way, the optimal balance between the air outlet speed and the air outlet volume at the jet outlet 41 can be ensured, and it can be avoided that the inclination angle of the air duct wall 40a is too large and the height of the jet outlet 41 is too small, which causes the jet outlet 41 to flow out. The problem of unsmooth wind can also avoid that the inclination angle of the air duct wall 40a is too small, which leads to a large height of the jet outlet 41 and cannot achieve the effect of accelerating the air flow.

In some embodiments, the ratio between the depth L ₁ of the air outlet cavity 43 extending in the front-rear direction and the depth L ₂ of the jet air duct 40 extending in the front-rear direction is any one in the range of 1:2˜3:4 ratio, so that the jet outlet 41 can form a relatively uniform air supply in the lateral direction, and avoid that the depth of the air outlet cavity 43 relative to the jet air duct 40 is too large, resulting in a large air outlet volume on the left side of the jet fan 50 adjacent to the jet outlet 41. The problem of small air outlet volume on the right side can also avoid the problem that the depth of the air outlet cavity 43 relative to the jet air duct 40 is too small, resulting in a small air outlet volume on the left side of the jet outlet 41 and a large air outlet volume on the right side.

In some alternative embodiments, the jet air duct 40 may also be a flat air duct placed horizontally as a whole, and a flat jet cavity is defined therein.

In some embodiments, the jet fan 50 communicates with a lateral end of the jet air duct 40 adjacent to the jet fan 50 to transport natural air into the jet air duct 40 in the lateral direction. However, since the jet air outlet 41 is located at the front side of the jet air duct 40 and extends laterally, the flow direction of the air flowing into the jet air duct 40 is perpendicular to the flow direction of the air flowing out of the jet air duct 40 . That is, the airflow needs to be reversed by approximately 90 degrees in the jet air duct 40 . FIG. 5 is a schematic cross-sectional view of a jet air duct taken along a horizontal section according to other embodiments of the present invention, and FIG. 6 is a schematic enlarged view of part A in FIG. 5 . In order to ensure uniform air discharge from the jet air outlet 41 in the lateral direction, the jet air duct 40 is provided with a plurality of guide ribs 42 arranged at intervals in the lateral direction to guide the natural air flowing into the jet air duct 40 in the lateral direction to the The jet flows out of the tuyere 41 . In other words, the natural air flowing laterally in the jet air duct 40 can be guided to the jet air outlet 41 relatively uniformly through the guide ribs 42, so that the heat exchange air flowing out from any place of the heat exchange air outlet 41 can be combined with the air flow. The natural air flowing out from the jet air outlet 41 is mixed, thereby improving the air outlet uniformity of the wall-mounted air conditioner indoor unit 1 in the lateral direction in terms of the outlet air temperature and the outlet air volume.

In some embodiments, the deflector rib 42 has a convex and curved shape toward the side away from its windward surface, so that the deflector rib 42 can have a preset value on its windward side (the side where the windward surface is located). The ability of a certain amount of airflow, the preset amount of airflow flows forward to the jet outlet 41 under the guidance of the air guide ribs 42, so that the uniformity of the jet outlet tuyere 41 in the lateral direction is achieved under the cooperation of the plurality of air guide ribs 42. out of the wind.

In some embodiments, the baffle 42 may include a first straight section 421 extending along a preset direction, a protruding curved section extending from the rear to the front from the end of the first straight section 421 toward the preset direction The arcuate section 422 and the second straight section 423 extending forward from the end of the arcuate section 422 to the jet outlet 41 . That is, the first straight section 421 and the second straight section 423 are perpendicular to each other, and the central angle corresponding to the arcuate section 422 is 90°. The extension direction of the first straight section 421 is the same as the direction in which the airflow flows into the inlet air duct 40 , that is, a preset amount of airflow can be kept below the first straight section 421 so as to pass through the arcuate section 422 and The second straight section 423 guides the flow to the jet outlet 41 , which in turn can reduce the flow resistance of the airflow after encountering the arcuate section 422 .

Further, the depths in the front-rear direction of the plurality of flow guide ribs 42 arranged in sequence along the above-mentioned predetermined direction are sequentially increased. That is to say, the depths of the plurality of guide ribs 42 in the front-rear direction are gradually increased in the above-mentioned predetermined direction. In this way, the preset airflow rate retained on the windward side of each air guide rib 42 can be made substantially the same, thereby further improving the uniformity of the air outlet from the jet outlet 41 in the lateral direction. Since the front end of the second straight section 423 of each air guide rib 42 extends to the jet outlet 41, the front end of each air guide rib 42 is flush. The rear end of the flow rib 42 extends rearwardly to a greater and greater depth.

Specifically, the first straight sections 421 and the arcuate sections 422 of the plurality of flow guide ribs 42 arranged in sequence along the above-mentioned predetermined direction are respectively the same. That is to say, the length of the first straight section 421 of each air guide rib 42 extending in the preset direction is the same, and the bending angle and specific shape of the arc section 422 of each air guide rib 42 are the same, In order to obtain substantially the same diversion effect with less resistance at each diversion rib 42 . Further, the depths of the second straight sections 423 of the plurality of diverting ribs 42 arranged in sequence along the above-mentioned predetermined direction in the front-rear direction increase sequentially, so that the diversion upstream of each diverting rib 42 can be compensated for. The blocking effect of the ribs 42 on the airflow enables each rib 42 to retain substantially the same amount of airflow on its windward side.

Further, the depths of the second straight sections 423 of the plurality of guide ribs 42 arranged in sequence along the above-mentioned predetermined direction in the front-rear direction increase according to the same gradient. For the jet air duct 40 with a specific width in the lateral direction, the depth of the second straight section 423 of each air guide rib 42 in the front-rear direction is approximately the same as that of the second straight section 423 of the most upstream air guide rib 42 The depth of the straight section 423 in the front-rear direction is 0.1-0.2 times, so that a better uniform air outlet effect can be obtained at the jet outlet 41 .

In some embodiments, the inner side of the end of the jet outlet 41 adjacent to the jet fan 50 is provided with an end guide rib 45 , and the end guide rib 45 is located on the upstream side of each guide rib 42 in the above-mentioned predetermined direction. That is to say, after the airflow flows into the inlet air duct 40 , it first passes through the diversion effect of the end baffle ribs 45 , and then passes through the diversion effect of the plurality of baffle ribs 42 .

Further, the end guide rib 45 has a shape that is convex and curved toward its windward side, that is, the end guide rib 45 is protruding and curved from the rear to the front toward the opposite direction to the above-mentioned preset direction. arc. In this way, part of the air flow toward the end guide ribs 45 can be guided backwards, so that it flows in a predetermined direction together with most of the other air flows, so as to prevent most of the air flowing into the jet air duct 40 from passing through the jet outlet 41 . The end of the adjacent jet fan 50 is sent out, causing the phenomenon of serious uneven air supply from the jet outlet 41 . In addition, the design of the protruding direction of the end guide ribs 45 can reduce the flow resistance of the end guide ribs 45 to the airflow, and avoid the formation of a concave cavity on the windward side of the end guide ribs 45 to cause eddy currents and other undesirable phenomena.

Furthermore, in order to ensure the uniformity of the air outlet from the jet outlet 41 in the lateral direction, the depth of the end baffle ribs 45 in the front-rear direction is set to be smaller than the depth of any one of the baffle ribs 42 in the front-rear direction. If the depth of the end guide ribs 45 in the front-rear direction is too large, the airflow at the several guide ribs 42 disposed adjacent to the end guide ribs 45 may be small, and the several guide ribs 42 cannot A sufficient amount of airflow remains on the windward side thereof, so that the uniformity of the air outlet from the jet outlet 41 in the lateral direction cannot be ensured.

In some alternative embodiments, the end baffle 45 may also have other suitable shapes, for example, it may be in the shape of a flat plate extending forward and backward, or may be in the shape of an arc that protrudes away from its windward side.

In some embodiments, in order to further improve the air outlet uniformity of the jet outlet 41 in the lateral direction, the jet air duct 40 defines the above-mentioned air outlet cavity 43 and the air collecting cavity 44, and the air outlet cavity 43 is provided with the above-mentioned guide Rib 42.

In some embodiments, the jet fan 50 is disposed on one of the lateral sides of the casing 10 , and includes a centrifugal fan 51 and a centrifugal volute 52 located outside the centrifugal fan 51 , between the centrifugal volute 52 and the jet air duct 40 . The air-guiding passages 60 communicate with each other in a sealed manner. Since the centrifugal volute 52 is oriented downward, the lateral end of the jet air duct 40 communicating with the jet fan 50 is oriented horizontally, and the two are oriented perpendicular to each other. If they are directly connected, it is not conducive to airflow. The air guide channel 60 is arranged between the two as a section for the airflow buffering and reversing, which can reduce the airflow resistance.

Further, the air guide channel 60 first bends and extends to the lateral outer side of the casing 10 from top to bottom, and then bends and extends to the lateral inner side of the casing 10 to smoothly communicate with the centrifugal volute 52 and the jet air duct 40 . Therefore, by slightly extending the air flow path between the centrifugal volute 52 and the jet air duct 40, the air flow can be reversed under the premise of less flow resistance, thereby ensuring a higher flow speed of the air flow. However, the extension of the airflow path between the centrifugal volute 52 and the jet air duct 40 is very small, and hardly affects the airflow velocity.

In some embodiments, the casing 10 further includes a frame 70 for supporting the heat exchanger 20 and the fan 30 , and the jet fan 50 is disposed on one of the lateral sides of the casing 10 and is at the lateral outer side of the frame 70 to The layout between the jet fan 50 and other structures in the casing 10 is made more compact, thereby reducing the volume of the wall-mounted air conditioner indoor unit 1 . Therefore, it is only necessary to leave a space for accommodating the jet fan 50 in one of the lateral sides of the casing 10 , without occupying the space in the front-rear direction of the casing 10 , and without installing a fan shielding device. On the one hand, it is ensured that the casing 10 of the entire wall-mounted air conditioner indoor unit 1 is still intact, so as to maintain a good aesthetic effect. It is slightly longer than the traditional hanging machine, the shape is the same as that of the traditional hanging machine, other aspects are the same as the traditional hanging machine, and it is still very light.

The fan 30 is a cross-flow fan whose rotating shaft extends laterally of the casing 10 , and has a large air supply volume and a large air supply range in the lateral direction.

Further, in order to improve the structural stability of the jet air duct 40, the other lateral end of the jet air duct 40 can be fixedly connected with the frame 70, so as to avoid the inclination of the jet air duct 40 caused by the suspension of the other lateral end of the jet air duct 40. or shaking.

In some embodiments, the main air inlet 12 is opened on the top of the casing 10 , and the heat exchanger 20 can be arranged on the air flow path between the main air inlet 12 and the fan 30 to enter the casing through the main air inlet 12 . The airflow within 10 conducts heat exchange. A jet air inlet 15 communicated with the air inlet of the jet fan 50 is opened on the lateral side plate of the casing 10 adjacent to the jet fan 50 to allow the air outside the wall-mounted air conditioner indoor unit 1 to flow to the jet through the jet air inlet 15 Fan 50. Specifically, the jet air inlet 15 may be opened on the end plate 16 and part of the casing 13 . The air inlet of the jet fan 50 may face the jet air inlet 15 , that is, the air inlet of the jet fan 50 faces the lateral outer side of the casing 10 . In this way, the jet air inlet 15 and the main air inlet 12 are located on two different sides of the casing 10. On the one hand, the air intakes of the two air inlets do not interfere with each other. The size of the main air inlet 12 is reduced, the total flow area of the air inlet of the wall-mounted air conditioner indoor unit 1 is increased, and the air intake volume thereof is increased.

Those skilled in the art should also understand that the terms "upper", "lower", "front", "rear", etc. used to indicate orientation or positional relationship in the embodiments of the present invention are the ones of the wall-mounted air conditioner indoor unit 1. Based on the actual state of use, these terms are only for the convenience of describing and understanding the technical solutions of the present invention, rather than indicating or implying that the referred device must have a specific orientation, be constructed and operated in a specific orientation, and therefore It should not be construed as a limitation of the present invention.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. 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:

The casing is provided with a heat exchange airflow outlet extending along the lateral direction of the casing, and a heat exchanger and a fan are arranged inside the casing, so as to promote the heat exchange airflow in the casing to pass through the The heat exchange air outlet is sent out;

A jet air duct is provided with a jet air outlet extending laterally of the casing, and the jet air duct is spaced from the casing so as to be between the heat exchange air outlet and the jet air outlet forming a drainage duct; and

a jet fan, communicated with the jet air duct, so as to controllably drive the air outside the wall-mounted air conditioner indoor unit to flow to the jet air duct and send it out through the jet air outlet, so that the air flows out through the jet The unheated natural air flowing out of the tuyere is mixed with the unheated natural air flowing out through the drainage air duct and the heat exchange air flow sent out through the heat exchange airflow outlet.
The wall-mounted air conditioner indoor unit according to claim 1, wherein:

The heat exchange airflow outlet is opened at the bottom of the front side of the casing, and the jet air outlet is opened at the front side of the jet air duct; and

The jet air duct is disposed below the casing at a distance from the casing, so as to form the drainage air duct above the jet air duct and below the casing.
The wall-mounted air conditioner indoor unit according to claim 2, wherein:

The jet fan is communicated with a lateral end of the jet air duct adjacent to the jet fan, so as to transport natural air into the jet air duct in the lateral direction; and

The interior of the jet air duct defines an air outlet cavity that communicates with the jet air outlet and an air collection cavity that is located at the rear side of the air outlet cavity and communicated with the jet fan, so that the jet air duct flows into the jet air duct. The natural air flows through the air collecting chamber and the air outlet chamber in sequence and then is sent out from the jet outlet, and the air outlet chamber is tapered from the back to the front.
The wall-mounted air conditioner indoor unit according to claim 3, wherein:

The air duct wall of the jet air duct used to define the top of the air outlet cavity is inclined downward from the rear to the front, and the air duct wall of the jet air duct used to define the bottom of the air outlet cavity from the back Extend straight forward.
The wall-mounted air conditioner indoor unit according to claim 4, wherein:

The inclination angle of the air duct wall of the jet air duct for defining the top of the air outlet cavity is set so that the height of the jet air outlet in the vertical direction is the same as the maximum height of the air outlet cavity in the vertical direction. The ratio between the heights is any ratio in the range of 1:5 to 1:3.
The wall-mounted air conditioner indoor unit according to claim 4, wherein:

The ratio between the depth of the air outlet cavity extending in the front-rear direction and the depth of the jet air duct extending in the front-rear direction is any ratio in the range of 1:2 to 3:4.
The wall-mounted air conditioner indoor unit according to claim 2, wherein:

The jet fan is communicated with a lateral end of the jet air duct adjacent to the jet fan, so as to transport natural air into the jet air duct in the lateral direction; and

The interior of the jet air duct is provided with a plurality of flow guide ribs arranged at intervals in the lateral direction, so as to guide the natural air flowing into the jet air duct in the lateral direction to the jet outlet.
The wall-mounted air conditioner indoor unit according to claim 7, wherein:

The rib has a convex and curved shape toward the side facing away from its windward face.
The wall-mounted air conditioner indoor unit according to claim 2, wherein:

The jet fan is arranged on one of the lateral sides in the casing, and includes a centrifugal fan and a centrifugal volute outside the centrifugal fan, and an air guide is passed between the centrifugal volute and the jet air duct. the passages are in sealing communication; and

The air guide passage first bends and extends to the lateral outer side of the casing from top to bottom, and then bends and extends to the lateral inner side of the casing, so as to be in smooth communication with the centrifugal volute and the jet air passage at the same time .
The wall-mounted air conditioner indoor unit according to claim 2, wherein:

The casing also includes a frame for supporting the heat exchanger and the fan, the jet fan is arranged on one of the lateral sides in the casing, and is at the lateral outer side of the frame, the The fan is a cross-flow fan whose rotation axis extends laterally of the casing; and

A jet air inlet communicated with the air inlet of the jet fan is opened on the lateral side plate of the casing adjacent to the jet fan, so as to allow the air outside the wall-mounted air conditioner indoor unit to pass through the jet The air inlet flows to the jet fan; the top of the casing is provided with a main air inlet, and the heat exchanger is arranged on the air flow path between the main air inlet and the fan to communicate with the main air inlet through the main air inlet. The air flow entering the casing through the air inlet conducts heat exchange.