Jet device for wall-mounted air conditioner indoor unit and wall-mounted air conditioner indoor unit

Abstract

The present invention relates to a jet device for a wall-mounted air conditioner indoor unit and the wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit includes a housing having a heat exchange air outlet extending laterally thereon. The jet device includes: a jet duct having a jet outlet extending laterally thereon on its front side; and a jet fan connected to one of the lateral sides of the jet duct to controllably drive air outside the jet device to flow into the jet duct in a preset direction parallel to the lateral direction and to be delivered from the jet outlet. This allows the unheated natural air flowing out of the jet outlet to mix with the heat exchange air flow delivered through the heat exchange air outlet. The jet duct is provided with a plurality of guide ribs arranged laterally therein to guide the natural air flowing into the jet duct laterally therein to flow from back to front toward the jet outlet, thereby ensuring normal air supply at any position of the laterally extending jet outlet and achieving a large air flow volume.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a jet device for a wall-mounted air conditioning indoor unit and the wall-mounted air conditioning indoor unit. Background Art

[0002] With the increasing popularity of air conditioners, users are demanding increasingly comfortable and healthy airflow. For traditional wall-mounted indoor air conditioner units, air volume and noise levels are two conflicting parameters, limiting their maximum airflow to a certain range. Furthermore, the cold air from air conditioners is relatively low in temperature, which can cause discomfort if directly blown onto a user, negatively impacting the user experience.

[0003] To this end, some existing wall-mounted air conditioner indoor units have been designed with air induction schemes, which mainly utilize the airflow at the air outlet to drive the air out of the induction air outlet. Although this can achieve the effect of mixing natural air with the heat exchange airflow, the amount of induced air is relatively small, and the soft air supply effect actually experienced by users is not very obvious. Some existing wall-mounted air conditioner indoor units have an additional induced air module on the rear side outside the casing. The induced air module is equipped with an induced draft fan, which drives the indoor air to flow into the jet channel and out of the jet channel, thereby increasing the amount of induced air. However, in the existing technology, the direction of air flow into the jet channel is basically the same as the direction of air flow out of the jet channel. This strictly limits the placement of the induced draft fan and even the entire induced draft module to the rear side of the jet channel outlet, which leads to problems such as the wall-mounted air conditioner indoor unit being bulky and heavy. Summary of the Invention

[0004] An object of the first aspect of the present invention is to overcome at least one drawback of the prior art and to provide a jet device for a wall-mounted air conditioner indoor unit that has a large air flow volume and occupies a small space.

[0005] A further object of the first aspect of the present invention is to further improve the uniformity of the air outlet of the jet device in the lateral direction.

[0006] Another further object of the first aspect of the present invention is to increase the air outlet speed of the jet device and extend its air supply distance.

[0007] A second aspect of the present invention aims to provide a wall-mounted air-conditioning indoor unit having the above-mentioned jet device.

[0008] According to a first aspect of the present invention, the present invention provides a jet device for a wall-mounted air conditioner indoor unit, the wall-mounted air conditioner indoor unit comprising a housing, the housing being provided with a heat exchange airflow outlet extending laterally for delivering a heat exchange airflow, wherein the jet device comprises:

[0009] A jet air duct, the front side of which is provided with a jet air outlet extending in the transverse direction; and

[0010] a jet fan connected to one of the lateral sides of the jet duct to controllably drive the air outside the jet device to flow into the jet duct along a preset direction parallel to the lateral direction and be sent out from the jet outlet, thereby mixing the unheated natural air flowing out of the jet outlet with the heat exchange air flow sent out through the heat exchange air flow outlet; and

[0011] The interior of the jet air duct is provided with a plurality of guide ribs arranged at intervals in the transverse direction, so as to guide the natural air flowing into the jet air duct in the transverse direction to flow from back to front toward the jet air outlet.

[0012] Optionally, the guide rib has a shape that is convexly curved toward a side away from its windward surface.

[0013] Optionally, the guide rib includes a first straight section extending along the preset direction, an arc section extending from the end of the first straight section in a convex and curved manner from back to front toward the preset direction, and a second straight section extending forward from the end of the arc section to the jet outlet.

[0014] Optionally, the depths of the plurality of guide ribs arranged in sequence along the preset direction increase sequentially in the front-to-back direction.

[0015] Optionally, an end guide rib is provided on the inner side of the end of the jet air outlet adjacent to the jet fan, and the end guide rib is located on the upstream side of each of the guide ribs in the preset direction; and

[0016] The end guide rib has a shape that is convexly curved toward the windward side thereof.

[0017] Optionally, the depth of the end guide rib in the front-to-back direction is smaller than the depth of any other guide rib in the front-to-back direction.

[0018] Optionally, the guide rib includes a first straight section extending obliquely from back to front along the preset direction, an arc section extending convexly and curved from the end of the first straight section from back to front toward the preset direction, and a second straight section extending forward from the end of the arc section to the jet outlet; and

[0019] The shapes and sizes of the plurality of guide ribs are the same.

[0020] Optionally, the interior of the jet air duct is defined by an air outlet cavity connected to the jet air outlet and an air collecting cavity located at the rear side of the air outlet cavity and connected to the jet fan, so that the natural air flowing into the jet air duct flows through the air collecting cavity and the air outlet cavity in sequence and is then delivered from the jet air outlet; and

[0021] The air outlet cavity gradually shrinks from the back to the front, and the guide rib is located in the air outlet cavity.

[0022] Optionally, the jet fan is arranged on one of the lateral outer sides of the jet air duct, and comprises a centrifugal fan and a centrifugal volute located outside the centrifugal fan.

[0023] The centrifugal volute and the jet air duct are sealedly connected via an air guide channel; and

[0024] The air guide channel bends and extends from top to bottom first toward the lateral outer side of the jet air duct and then toward the lateral inner side of the jet air duct, so as to be smoothly connected with the centrifugal volute and the jet air duct at the same time.

[0025] According to a second aspect of the present invention, the present invention further provides a wall-mounted air conditioner indoor unit, comprising:

[0026] The housing is provided with a heat exchange airflow outlet extending laterally for delivering the heat exchange airflow; and

[0027] The jet device described in any of the above schemes is used to controllably cause the airflow outside it to flow into its interior and be sent out through its jet outlet, and to mix the airflow sent out through the jet outlet with the heat exchange airflow flowing out through the heat exchange airflow outlet.

[0028] The jet device of the present invention comprises a jet duct and a jet fan, which can actively inject external air into the jet duct through the jet fan. Compared with the prior art method of passive drainage using negative pressure, the present invention provides a jet fan for active jet flow, which greatly increases the jet air volume and increases the air supply distance. In addition, a plurality of guide ribs arranged at intervals along the transverse direction are provided in the jet duct, which can guide the natural air flowing into the jet duct laterally to flow from the back to the front toward the jet outlet. This not only ensures normal air supply at any position of the laterally extending jet outlet, but also allows the jet fan to be set at other positions other than the rear side of the jet duct, such as on the transverse outside of the jet duct, thereby reducing the volume occupied by the entire jet device in the front-to-back direction, making the structural layout of the jet device more suitable for wall-mounted air conditioner indoor units, and avoiding the problem of the wall-mounted air conditioner indoor unit being bulky and heavy after the jet device is integrated into the wall-mounted air conditioner indoor unit.

[0029] Furthermore, the guide rib has a convex and curved shape toward the side away from its windward surface, thereby enabling the guide rib to have the ability to retain a preset amount of airflow on one side of its windward surface. The preset amount of airflow flows toward the jet outlet under the guidance of the guide rib, thereby achieving uniform air outlet in the lateral direction of the jet outlet with the cooperation of multiple guide ribs.

[0030] Furthermore, the jet duct is internally defined by a plenum chamber and an outlet chamber. The plenum chamber is connected to the jet fan, and static pressure is increased through the plenum chamber. This ensures a high airflow while also correcting the direction of airflow flowing laterally into the plenum chamber to at least have a tendency to flow forward into the outlet chamber. This allows the airflow to flow from the rear to the front toward the jet outlet under the action of the guide ribs after entering the outlet chamber. Furthermore, the outlet chamber tapers from the rear to the front, reducing airflow resistance and increasing the velocity of airflow toward the jet outlet, thereby increasing the jet device's air output speed and extending its air delivery distance.

[0031] 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

[0032] 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:

[0033] Figure 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to one embodiment of the present invention;

[0034] Figure 2 is a schematic structural diagram of a fluidic device according to one embodiment of the present invention;

[0035] Figure 3 is a schematic cross-sectional view of a jet duct according to some embodiments of the present invention taken along a horizontal section plane;

[0036] Figure 4 yes Figure 3 Schematic enlarged view of the middle part A;

[0037] Figure 5 1 is a schematic cross-sectional view of a jet duct according to other embodiments of the present invention taken along a horizontal section plane;

[0038] Figure 6 yes Figure 5 A schematic enlarged view of the middle portion B;

[0039] Figure 7 is a schematic cross-sectional view of a jet duct according to another embodiment of the present invention taken along a longitudinal section extending in the front-to-rear direction;

[0040] Figure 8 is a schematic cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present invention;

[0041] Figure 9is a schematic structural diagram of a wall-mounted air conditioner indoor unit with the casing hidden according to one embodiment of the present invention;

[0042] Figure 10 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to another embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention first provides a jet device for a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is an air conditioner indoor unit that is usually hung on a wall or other supporting position for use. Figure 1 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. The wall-mounted air conditioner indoor unit 1 of the present invention comprises a housing 10, on which a heat exchange air flow outlet 11 ( Figure 1 The heat exchange air flow outlet is not shown. Figure 1 The heat exchange air flow outlet in the heat exchange chamber is covered by the air guide plate).

[0044] Figure 2 Schematic diagram of the structure of a fluidic device according to one embodiment of the present invention. Figure 2 The jet device 100 of the present invention is applied to the above-mentioned wall-mounted air conditioner indoor unit 1 and includes a jet duct 40 and a jet fan 50. A jet outlet 41 extending laterally is provided on the front side of the jet duct 40 to facilitate forward air delivery, making the jet device 100 suitable for most wall-mounted air conditioner indoor units with forward air delivery. The jet fan 50 is connected to one of the lateral sides of the jet duct 40 to controllably drive air outside the jet device 100 to flow into the jet duct 40 in a predetermined direction parallel to the horizontal direction and be delivered through the jet outlet 41. This allows the unheated natural air flowing out of the jet outlet 41 to mix with the heated air flow delivered through the heated air flow outlet 11. In other words, the jet fan 50 actively injects external air into the jet duct 40. Compared to the prior art method of passively draining air using negative pressure, the present invention provides active jet flow through the jet fan 50, significantly increasing the jet air volume and the air delivery distance. The above-mentioned preset direction is parallel to the horizontal direction, and can be a direction from left to right or a direction from right to left.

[0045] Because the jet air outlet 41 is located at the front side of the jet air duct 40 and extends laterally, and the jet fan 50 is connected to one of the lateral ends of the jet air duct 40, the direction of the airflow entering the jet air duct 40 and the direction of the airflow exiting the jet air duct 40 are perpendicular to each other. In other words, the airflow needs to change direction approximately 90 degrees within the jet air duct 40. To this end, the interior of the jet air duct 40 is specifically provided with a plurality of transversely spaced guide ribs 42 to guide the natural air flowing laterally into the jet air duct 40 so that it flows from back to front toward the jet air outlet 41. In other words, the guide ribs 42 can relatively evenly guide the natural air flowing laterally within the jet air duct 40 to the jet air outlet 41, allowing the heat exchange airflow flowing out of any point in the heat exchange airflow outlet 41 to mix with the natural air flowing out of the jet air outlet 41, thereby improving the lateral airflow uniformity of the wall-mounted air conditioner indoor unit 1 in terms of both outlet air temperature and air volume. This not only ensures normal air supply at any position of the laterally extending jet air outlet 41, but also allows the jet fan 50 to be set at other positions except the rear side of the jet air duct 40, such as on the laterally outer side of the jet air duct 40, thereby reducing the volume occupied by the entire jet device 100 in the front-to-back direction, making the structural layout of the jet device 100 more suitable for a wall-mounted air-conditioning indoor unit 1, and avoiding the problem of the wall-mounted air-conditioning indoor unit 1 being bulky and heavy after the jet device 100 is integrated into the wall-mounted air-conditioning indoor unit 1.

[0046] Figure 3 is a schematic cross-sectional view of a jet duct according to some embodiments of the present invention taken along a horizontal section plane. Figure 4 yes Figure 3 Schematic enlargement of part A in the middle. Figure 3 The dashed arrow in the figure indicates the direction of airflow into the jet duct. In some embodiments, the guide rib 42 has a convex and curved shape facing away from its windward side. This allows the guide rib 42 to retain a predetermined amount of airflow on its windward side (the side where the windward side is located). This predetermined amount of airflow is guided forward by the guide rib 42 toward the jet outlet 41, thereby achieving uniform airflow in the lateral direction of the jet outlet 41 through the cooperation of multiple guide ribs 42.

[0047] In some embodiments, see Figure 3 and Figure 4The guide rib 42 may include a first straight section 421 extending in a preset direction, an arc-shaped section 422 extending from the end of the first straight section 421 in a convex and curved manner from the back to the front in the preset direction, and a second straight section 423 extending from the end of the arc-shaped section 422 forward to the jet outlet 41. In other words, the first straight section 421 and the second straight section 423 are perpendicular to each other, and the central angle corresponding to the arc-shaped 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 jet duct 40, which can not only retain a preset amount of airflow below the first straight section 421 so that it can be guided to the jet outlet 41 through the arc-shaped section 422 and the second straight section 423, but also reduce the flow resistance of the airflow after encountering the arc-shaped section 422.

[0048] Furthermore, the depths of the multiple guide ribs 42 arranged in sequence along the preset direction increase in the front-to-back direction. In other words, the depths of the multiple guide ribs 42 in the front-to-back direction increase in a step-like manner along the preset direction. This allows the preset airflow retained on the windward side of each guide rib 42 to be substantially the same, thereby further improving the lateral uniformity of the airflow from the jet device 100. Since the front end of the second straight section 423 of each guide rib 42 extends to the jet outlet 41, the front ends of the various guide ribs 42 are flush, and the rear ends of the multiple guide ribs 42 arranged in sequence along the preset direction extend backwards to increasingly greater depths.

[0049] Specifically, the first straight sections 421 and curved sections 422 of the plurality of guide ribs 42 arranged sequentially along the preset direction are identical. That is, the first straight section 421 of each guide rib 42 extends the same length in the preset direction, and the curved section 422 of each guide rib 42 has the same bending angle and specific shape, thereby achieving a substantially identical diversion effect with low resistance at each guide rib 42. Furthermore, the second straight sections 423 of the plurality of guide ribs 42 arranged sequentially along the preset direction have increasing depths in the front-to-back direction. This compensates for the airflow obstruction caused by the guide rib 42 upstream of each guide rib 42, allowing each guide rib 42 to retain substantially the same amount of airflow on its windward side.

[0050] Furthermore, the depths of the second straight sections 423 of the plurality of guide ribs 42 arranged sequentially along the predetermined direction increase in the same gradient in the fore-aft direction. For a jet duct 40 having a specific width in the transverse direction, the depth of the second straight section 423 of each guide rib 42 in the fore-aft direction increases by approximately 0.1 to 0.2 times the depth of the second straight section 423 of the upstreammost guide rib 42 in the fore-aft direction. This ensures a more uniform airflow at the jet outlet 41.

[0051] In some embodiments, an end guide rib 45 is provided on the inner side of the end of the jet air outlet 41 adjacent to the jet fan 50. The end guide rib 45 is located upstream of each guide rib 42 in the aforementioned predetermined direction. In other words, after entering the jet air duct 40, the airflow is first guided by the end guide rib 45 and then by the multiple guide ribs 42.

[0052] Furthermore, the end guide rib 45 has a convex and curved shape toward its windward side. That is, the end guide rib 45 is in the shape of an arc that convexly bends and extends from back to front in a direction opposite to the aforementioned preset direction. This allows a portion of the airflow directed toward the end guide rib 45 to be directed backward, allowing it to flow along the preset direction together with the majority of the other airflow. This prevents the majority of the airflow entering the jet duct 40 from being discharged through the end of the jet outlet 41 adjacent to the jet fan 50, causing severe uneven airflow from the jet outlet 41. Furthermore, the convex design of the end guide rib 45 can reduce the flow resistance of the end guide rib 45 to the airflow, preventing the formation of a cavity on the windward side of the end guide rib 45, which can lead to undesirable phenomena such as vortices.

[0053] Furthermore, to ensure uniform lateral airflow from the jet air outlet 41, the depth of the end guide rib 45 in the front-to-back direction is set to be smaller than the depth of any of the guide ribs 42 in the front-to-back direction. If the depth of the end guide rib 45 in the front-to-back direction is too great, the airflow volume at several guide ribs 42 adjacent to the end guide rib 45 may be small, and several guide ribs 42 may not be able to retain a sufficient amount of airflow on their windward side, thus failing to ensure uniform lateral airflow from the jet air outlet 41.

[0054] In some alternative embodiments, the end guide rib 45 may also have other suitable shapes, for example, it may be in the shape of a flat plate extending forward and backward, or in the shape of an arc convex toward the windward side thereof.

[0055] Figure 5 is a schematic cross-sectional view of a jet duct according to some other embodiments of the present invention taken along a horizontal section plane. Figure 6 yes Figure 5 Schematic enlargement of part B in the middle. Figure 5 The dotted arrow in the figure indicates the direction of airflow into the jet duct. Figure 5 and Figure 6In other embodiments, the guide rib 42 includes a first straight section 421 extending obliquely from back to front along the predetermined direction; a curved section 422 extending convexly and curving from the end of the first straight section 421 toward the predetermined direction; and a second straight section 423 extending forward from the end of the curved section 422 to the jet outlet 41. In other words, the first straight section 421 and the second straight section 423 form an obtuse angle on the windward side, and the central angle of the curved section 422 is greater than 90°. The first straight section 421 extends obliquely from back to front along the predetermined direction, retaining a predetermined amount of airflow below the first straight section 421 while simultaneously directing this predetermined amount of airflow to the curved section 422. Thus, the three sections collectively direct the airflow to the jet outlet 41, reducing flow resistance.

[0056] Furthermore, for Figure 5 and Figure 6 For the guide ribs 42 of the illustrated embodiment, the shapes and sizes of the multiple guide ribs 42 can be the same, so that the amount of air retained on the windward side of each guide rib 42 can be roughly the same, thereby ensuring the uniformity of the air outlet of the jet outlet 41 in the lateral direction.

[0057] Furthermore, for Figure 5 and Figure 6 For the guide ribs 42 of the illustrated embodiment, the depth of each guide rib 42 extending in the front-to-back direction is greater than one-third of the total depth of the jet duct 40 in the front-to-back direction and does not exceed half of the total depth of the jet duct 40 in the front-to-back direction. If the guide rib 42 is too long relative to the depth of the jet duct 40, the amount of air flowing downstream at the guide rib 42 is small, resulting in an uneven phenomenon in which the air volume of the jet outlet 41 decreases sequentially in the preset direction. If the guide rib 42 is too short relative to the depth of the jet duct 40, the amount of air retained on the windward side of the guide rib 42 is very small, and most of the air flow flows to the other lateral end of the jet duct 40, resulting in a serious uneven air flow in the lateral direction of the jet outlet 41.

[0058] exist Figure 2 In the embodiment shown, the jet duct 40 is a horizontally placed flat duct with a flat jet cavity defined therein. In other embodiments, a portion of the jet duct 40 may also be conical. For example, Figure 7It is a schematic cross-sectional view of a longitudinal section of a jet air duct extending along the front-to-back direction according to another embodiment of the present invention. In other embodiments, the interior of the jet air duct 40 is defined by an outlet cavity 43 connected to the jet air outlet 41 and an air collecting cavity 44 located at the rear side of the air outlet cavity 43 and connected to the jet fan 50, so that the natural air flowing into the jet air duct 40 flows through the air collecting cavity 44 and the air outlet cavity 43 in sequence and is then sent out from the jet air outlet 41. In this way, the static pressure can be increased by the air collecting cavity 44, so that while ensuring a larger air intake volume, the direction of the airflow flowing into the air collecting cavity 44 in the transverse direction can be corrected to at least have a tendency to flow forward into the air outlet cavity 43, so that after the airflow flows into the air outlet cavity 43, it flows from back to front toward the jet air outlet 41 under the action of the guide rib 42.

[0059] Furthermore, the air outlet cavity 43 gradually shrinks from the back to the front, and the guide rib 42 is located in the air outlet cavity 43. In other words, when the air flows through the air outlet cavity 43, the flow area gradually decreases and the flow speed gradually increases, thereby increasing the flow speed of the air delivered by the jet device 100 and extending its air delivery distance.

[0060] Specifically, the air collecting chamber 44 defined inside the jet duct 40 is a horizontally placed flat cavity. On the one hand, the air collecting chamber 44 can provide a flow space with a larger cross-section for the natural air flowing into the jet duct 40 from one of the lateral ends of the jet duct 40, so that it can flow to the other lateral end of the jet duct 40 with less flow resistance, thereby facilitating the formation of a relatively uniform air outlet in the lateral direction of the jet outlet 41; on the other hand, the flow area of the front end opening of the air collecting chamber 44 is relatively small, so that the natural air flowing from the air collecting chamber 44 to the air outlet chamber 43 can have a relatively high flow rate.

[0061] In some embodiments, the duct wall 40a of the jet duct 40, which defines the top of the air outlet cavity 43, extends straight from back to front, while the duct wall 40b of the jet duct 40, which defines the bottom of the air outlet cavity 43, extends upward and tilted from back to front. Thus, the defined air outlet cavity 43 tapers from back to front. The duct wall 40a, which defines the top of the air outlet cavity 43, extends straight from back to front, facilitating the abutment of the jet duct 40 with the housing 10 of the wall-mounted air conditioner indoor unit 1. Thus, after the jet device 100 is integrated into the wall-mounted air conditioner indoor unit 1, the jet air outlet 41 of the jet duct 40 is positioned adjacent to the heat exchange air flow outlet 11, making the structure of the wall-mounted air conditioner indoor unit 1 more compact.

[0062] In some alternative embodiments, the air outlet cavity 43 may also have other tapered shapes that taper from back to front. For example, the air duct wall 40a defining the top of the air outlet cavity 43 may extend downwardly and obliquely from back to front, while the air duct wall 40b defining the bottom of the air outlet cavity 43 may extend straightly and obliquely from back to front. For another example, the air duct wall 40a defining the top of the air outlet cavity 43 may extend downwardly and obliquely from back to front, while the air duct wall 40b defining the bottom of the air outlet cavity 43 may extend upwardly and obliquely from back to front.

[0063] In some embodiments, the jet fan 50 is positioned on one of the transversely outer sides of the jet duct 40. This reduces the front-to-back thickness of the jet device 100 and makes it slightly wider in the transverse direction, making it more suitable for use in a wall-mounted air conditioner indoor unit 1. When the jet device 100 is integrated into the wall-mounted air conditioner indoor unit 1, the front-to-back thickness of the wall-mounted air conditioner indoor unit 1 is not increased. The wall-mounted air conditioner indoor unit 1 is only slightly wider in the transverse direction than a traditional wall-mounted air conditioner. In other respects, it is identical to a traditional wall-mounted air conditioner and remains very lightweight.

[0064] Furthermore, the jet blower 50 may include a centrifugal fan 51 and a centrifugal volute 52 located outside the centrifugal fan 51. The centrifugal volute 52 is sealedly connected to the jet air duct 40 via an air guide channel 60. Because the centrifugal volute 52 faces downward, the lateral end of the jet air duct 40 that connects to the jet blower 50 faces horizontally. The two are oriented perpendicular to each other. If they were directly connected, it would be detrimental to airflow. The air guide channel 60 is provided between the two as a section for airflow buffering and reversing, which can reduce airflow resistance.

[0065] Furthermore, the air guide channel 60 curves downward, first toward the lateral outward side of the housing 10 and then toward the lateral inward side of the housing 10, to smoothly connect with both the centrifugal volute 52 and the jet duct 40. Thus, by slightly extending the airflow path between the centrifugal volute 52 and the jet duct 40, the airflow is reversed with minimal flow resistance, ensuring a high flow velocity. The extension of the airflow path between the centrifugal volute 52 and the jet duct 40 is very small and has virtually no effect on the airflow velocity.

[0066] The present invention further provides a wall-mounted air conditioner indoor unit 1, which includes a casing 10. The casing 10 is provided with a heat exchange airflow outlet 11 extending in a transverse direction for delivering a heat exchange airflow. Figure 8 is a schematic cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present invention, Figure 9This is a schematic structural diagram of a wall-mounted air-conditioning indoor unit according to an embodiment of the present invention, with the casing hidden. A heat exchanger 20 and a fan 30 may be provided inside the casing 10. The heat exchanger 20 may perform heat exchange with the air flow passing through it, thereby generating a heat exchange airflow. The fan 30 may cause the heat exchange air flow in the casing 10 to be delivered through the heat exchange airflow outlet 11. A main air inlet 12 is provided at the top of the casing 10. The heat exchanger 20 may be provided on the airflow path between the main air inlet 12 and the fan 30 to perform heat exchange with the airflow entering the casing 10 through the main air inlet 12. The casing 10 may include a cover 13 at the rear side, a front panel 14 at the front side, and two end plates 16 at both lateral sides. The cover 13, the front panel 14 and the two end plates 16 are matched and connected.

[0067] In particular, the wall-mounted air conditioner indoor unit 1 further includes the jet device 100 described in any of the above embodiments. The jet device 100 is used to controllably force external airflow into the interior of the unit and out through the jet air outlet 41, and to mix the airflow out of the jet air outlet 41 with the heat exchange airflow out of the heat exchange air outlet 11, thereby forming a relatively soft mixed airflow, thereby preventing the airflow from the wall-mounted air conditioner indoor unit 1 from being too cold or too hot, and improving its comfort experience.

[0068] In some embodiments, the heat exchange airflow outlet 11 is a strip-shaped outlet located at the front bottom of the housing 10 and extending laterally along the housing 10. The jet outlet 41 of the jet duct 40 can be positioned adjacent to the heat exchange airflow outlet 11 to facilitate better mixing of the heat exchange airflow delivered from the heat exchange airflow outlet 11 with the natural air delivered from the jet outlet 41, thereby ensuring a softer airflow from the wall-mounted air conditioner indoor unit 1. The heat exchange airflow outlet 11 and the jet outlet 41 extend laterally for approximately the same length to further enhance the mixing effect between the two airflows delivered from the two outlets.

[0069] Furthermore, the jet fan 50 of the jet device 100 is disposed on one of the lateral sides of the housing 10. Thus, only space needs to be reserved on one of the lateral sides of the housing 10 to accommodate the jet fan 50, without occupying the front-to-back space of the housing 10 and without requiring a fan shielding device. On the one hand, this ensures that the housing 10 of the entire wall-mounted air conditioner indoor unit 1 remains intact, thereby maintaining a good aesthetic effect. On the other hand, the wall-mounted air conditioner indoor unit 1 of the present application is only slightly longer in width than a conventional wall-mounted unit, and its shape is consistent with that of a conventional wall-mounted unit. In other respects, it is the same as a conventional wall-mounted unit and remains very lightweight.

[0070] In some embodiments, a jet air inlet 15 is provided on a lateral side panel of the housing 10 adjacent to the jet fan 50, communicating with the airflow inlet of the jet fan 50. This allows air from outside the wall-mounted air conditioner indoor unit 1 to flow toward the jet fan 50 through the jet air inlet 15. Specifically, the jet air inlet 15 can be provided on the end plate 16 and a portion of the cover 13. The airflow inlet of the jet fan 50 can be oriented toward the jet air inlet 15, i.e., the airflow inlet of the jet fan 50 faces the lateral outside of the housing 10. With this arrangement, the jet air inlet 15 and the main air inlet 12 are located on two different sides of the housing 10. This allows the airflow from the two inlets to not interfere with each other. Furthermore, the provision of the jet air inlet 15 does not reduce the size of the main air inlet 12, thereby increasing the total inlet flow area of the wall-mounted air conditioner indoor unit 1 and improving its airflow capacity.

[0071] In some embodiments, see Figure 1 The jet duct 40 is disposed adjacent to the housing 10 at the bottom of the housing 10. That is, the jet duct 40 is disposed at the bottom of the housing 10 and abuts against the bottom surface of the housing 10, so that the heat exchange air flow outlet 11 at the bottom front side of the housing 10 is disposed adjacent to the jet air outlet 41 at the front side of the jet duct 40.

[0072] Figure 10 : is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to another embodiment of the present invention. In other embodiments, the jet duct 40 is spaced apart from the housing 10 and is disposed below the housing 10 to form a guide duct 80 between the heat exchange air flow outlet 11 and the jet air outlet 41. That is, the two sides of the guide duct are the heat exchange air flow outlet 11 and the jet air outlet 41, respectively. As the heat exchange air flow outlet 11 and the jet air outlet 41 supply air, negative pressure is generated on both sides of the guide duct 80. Therefore, under the action of the negative pressure on both sides, the amount of air introduced into the guide duct 80 is relatively large. The natural air introduced through the guide duct 80 is mixed with the natural air sent through the jet air outlet 41 and the heat exchange air flow sent through the heat exchange air flow outlet 11, further increasing the overall air intake and overall air supply of the wall-mounted air conditioner indoor unit.

[0073] In some embodiments, the housing 10 further includes a frame 70 for supporting the heat exchanger 20 and the fan 30. The jet fan 50 is located on one of the lateral outer sides of the frame 70. This allows for a more compact layout of the jet fan 50 and other structures within the housing 10, thereby reducing the volume of the wall-mounted air conditioner indoor unit 1. Specifically, the jet fan 50 can be fixedly supported on the frame 70, eliminating the need for additional fan support structures and simplifying the structure of the wall-mounted air conditioner indoor unit 1.

[0074] Furthermore, in order to improve the structural stability of the jet duct 40, the other lateral end of the jet duct 40 can be fixedly connected to the frame 70 to prevent the other lateral end of the jet duct 40 from being suspended in the air and causing the jet duct 40 to tilt or shake.

[0075] In some embodiments, the fan 30 is a cross-flow fan with a rotating shaft extending laterally along the housing 10 , and has a large air supply volume and a large lateral air supply range.

[0076] Those skilled in the art should also understand that the terms "upper", "lower", "front", "rear", etc. used to indicate orientation or positional relationships in the embodiments of the present invention are based on the actual usage status of the jet device 100 after being applied to the wall-mounted air-conditioning indoor unit 1. These terms are only used to facilitate the description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0077] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of 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 deemed to cover all such other variations or modifications.

Claims

1. A jet device for a wall-mounted air conditioner indoor unit, the wall-mounted air conditioner indoor unit comprising a housing, the housing being provided with a heat exchange airflow outlet extending laterally for delivering a heat exchange airflow, characterized in that: The jet device comprises: A jet air duct, the front side of which is provided with a jet air outlet extending in the transverse direction; and a jet fan connected to one of the lateral sides of the jet duct to controllably drive the air outside the jet device to flow into the jet duct along a preset direction parallel to the lateral direction and be sent out from the jet outlet, thereby mixing the unheated natural air flowing out of the jet outlet with the heat exchange air flow sent out through the heat exchange air flow outlet; and The interior of the jet air duct is provided with a plurality of guide ribs arranged at intervals in the transverse direction to guide the natural air flowing into the jet air duct in the transverse direction to flow from the back to the front toward the jet air outlet; The guide rib has a convex curved shape facing away from its windward surface; The depths of the plurality of guide ribs arranged in sequence along the preset direction increase in sequence in the front-to-back direction; An end guide rib is provided on the inner side of the end of the jet air outlet adjacent to the jet fan, and the end guide rib is located on the upstream side of each guide rib in the preset direction; and The end guide rib has a shape that is convexly curved toward the windward side thereof.

2. The fluidic device according to claim 1, characterized in that The guide rib includes a first straight section extending along the preset direction, an arc section extending from the end of the first straight section in a convex and curved manner from back to front toward the preset direction, and a second straight section extending forward from the end of the arc section to the jet outlet.

3. The fluidic device according to claim 1, characterized in that The depth of the end guide rib in the front-to-back direction is smaller than the depth of any other guide rib in the front-to-back direction.

4. The fluidic device according to claim 1, characterized in that The guide rib includes a first straight section extending obliquely from back to front along the preset direction, an arc section extending convexly and curved from the end of the first straight section toward the preset direction from back to front, and a second straight section extending forward from the end of the arc section to the jet outlet; and The shapes and sizes of the plurality of guide ribs are the same.

5. The fluidic device according to claim 1, characterized in that The interior of the jet air duct is defined by an air outlet cavity connected to the jet air outlet and an air collecting cavity located at the rear side of the air outlet cavity and connected to the jet fan, so that the natural air flowing into the jet air duct flows through the air collecting cavity and the air outlet cavity in sequence and is then sent out from the jet air outlet; and The air outlet cavity gradually shrinks from the back to the front, and the guide rib is located in the air outlet cavity.

6. The fluidic device according to claim 1, characterized in that The jet fan is arranged on one of the lateral outer sides of the jet air duct and includes a centrifugal fan and a centrifugal volute located outside the centrifugal fan. The centrifugal volute and the jet air duct are sealedly connected via an air guide channel; and The air guide channel bends and extends from top to bottom first toward the lateral outer side of the jet air duct and then toward the lateral inner side of the jet air duct, so as to be smoothly connected with the centrifugal volute and the jet air duct at the same time.

7. A wall-mounted air conditioner indoor unit, characterized in that: include: The housing is provided with a heat exchange airflow outlet extending in a transverse direction for delivering the heat exchange airflow; as well as The jet device described in any one of claims 1 to 6 is used to controllably cause the airflow outside it to flow into its interior and be sent out through its jet outlet, and to mix the airflow sent out through the jet outlet with the heat exchange airflow flowing out through the heat exchange airflow outlet.

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