WO2021223391A1

WO2021223391A1 - Upright air conditioner indoor unit

Info

Publication number: WO2021223391A1
Application number: PCT/CN2020/127830
Authority: WO
Inventors: 张蕾; 王永涛; 尹晓英; 王晓刚; 闫宝升
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: 2020-07-16
Filing date: 2020-11-10
Publication date: 2021-11-11
Also published as: CN111912008A; CN111912008B

Abstract

Upright air conditioner indoor unit, comprising a housing (10), provided with a first air blowing port (11); an air duct (20), arranged in the housing (10), provided with an air inlet (23) and a first air outlet (21) facing the first air blowing port (11), the air duct (20) being used to guide air flow in the housing (10) to the first air blowing port (11), and the inner walls of the air duct near to the first air outlet (21) being a tapered shape in which the flow cross section decreases in the direction of flow; a flow guide part (30), arranged inside the air duct (20), and together with the tapered portion of the air duct (20), defining an annular air outlet gap (25), the flow guide part (30) being used to guide airflow towards the annular air outlet gap (25), so as to cause the airflow to gradually aggregate towards the center of airflow under the guidance of the inner walls of the air duct (20), and sequentially flow out of the first air outlet (21) and the first air blowing port (11); and a drive mechanism (70), used to drive the flow guide part (30) to move along the axial direction of the first air outlet (21) so as to adjust the distance between the flow guide part (30) and the inner walls of the air duct (20), thereby adjusting the amount of air exiting the annular air outlet gap (25). The upright air conditioner indoor unit features better results for distant air blowing and powerful air blowing.

Description

Vertical air conditioner indoor unit

Technical field

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

Background technique

Compared with the wall-mounted air conditioner indoor unit, the vertical air conditioner indoor unit has a larger horsepower and stronger cooling and heating capacity, and is usually placed in a larger indoor space such as a living room.

Because the vertical air conditioner indoor unit covers a larger area, it needs to have a stronger long-distance air supply capacity and a strong air output capacity. In order to achieve long-distance air supply, existing products usually increase the speed of the fan to increase the wind speed and volume. However, the increase of the fan speed will cause a series of problems such as the increase of the power of the air conditioner and the increase of noise, which will affect the user experience.

Summary of the invention

The purpose of the present invention is to provide a vertical air conditioner indoor unit that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, so as to achieve better long-distance air supply and strong air supply effects.

The further object of the present invention is to make the wind speed, air output and air supply distance of the remote air supply outlet adjustable.

The further object of the present invention is to make the vertical air conditioner indoor unit have the effect of raising the wind.

In particular, the present invention provides a vertical air conditioner indoor unit, which includes:

The housing, which has a first air supply opening;

The air duct is arranged in the housing and has an air inlet and a first air outlet facing the first air outlet, and is used to guide the airflow in the housing to the first air outlet. The inner wall of the air duct near the first air outlet is The flow cross-section gradually becomes smaller and tapered along the direction of the air flow;

The air guiding element is arranged in the air duct, and its tapered part defines an annular air outlet gap. The air guiding element is used to guide the air flow to the annular air outlet gap, so that the air flow is gradually directed toward the center of the air flow under the guidance of the inner wall of the air duct Converge and flow out of the first air outlet and the first air outlet in sequence; and

The driving mechanism is used to drive the air guide to move along the axial direction of the first air outlet, so as to adjust the distance between the air guide and the inner wall of the air duct, and then adjust the air volume of the annular air outlet gap.

Optionally, each driving mechanism includes: a rack, which extends along the axial direction of the first air outlet and is fixed to the flow guide; a gear, which meshes with the rack; and a motor, which is installed in the air duct and is used to drive the gear to rotate, In order to make the rack move along the axial direction of the first air outlet.

Optionally, a support rod extends from the inner wall of the air duct, and the rack is slidably mounted on the support rod along the axial direction of the first air outlet to be supported by the support rod.

Optionally, the first air outlet is opened on the front side of the housing; and the first air outlet is opened on the front side of the air duct.

Optionally, two second air outlets are also opened on the housing, which are respectively located on the lateral sides of the housing and are located lower than the first air outlet; and second air outlets are provided on both lateral sides of the air duct. The air ports are matched with the two second air supply ports respectively.

Optionally, the air duct is configured such that the upward angle of the airflow at the bottom section of the annular air outlet gap is greater than the downward inclination angle of the airflow at the top section of the annular air outlet gap, so that the airflow at the bottom section of the annular air outlet gap drives the airflow of the remaining sections forward together Flowing upward from above.

Optionally, the inner walls of the air duct near the top edge and lateral sides of the first air outlet gradually slope from back to front toward the horizontal central axis of the first air outlet, and the inner wall near the bottom edge of the first air outlet extends in the vertical direction ; And the position of the air inlet is lower than the first air outlet, so that the airflow flows from the bottom to the top of the guide.

Optionally, the wind prop has a constricted section with a cross-sectional area smaller than the remaining sections, and the constricted section is located on the upstream side of the flow guide to accelerate the air flow before it flows to the flow guide.

Optionally, the outer surface of the air guide includes: an outer end surface, which faces the first air outlet; an outer peripheral surface, which extends from the edge of the outer end surface in a direction away from the first air outlet; and an air guide surface, which extends from the edge of the outer peripheral surface It extends obliquely away from the direction of the first air outlet and toward the central axis of the first air outlet; and the inner end surface and the edge are connected to the edge of the air guide surface.

Optionally, the vertical air conditioner indoor unit further includes: a heat exchanger arranged in the air duct to exchange heat with the air flowing through it; and a fan arranged in the housing to encourage indoor air to enter the air duct.

In the vertical air conditioner indoor unit of the present invention, the inner wall of the air duct near the first air outlet is tapered, so that the flow cross section gradually becomes smaller along the airflow direction. In addition, the air guide inside the air duct and the tapered part of the inner wall of the air duct define an annular air outlet gap. In this way, the air flow (heat exchange air flow, fresh air flow, etc.) entering the air duct from the air duct inlet to the first air outlet will be blown to the inner wall of the air duct under the guidance of the air guide, and finally flow to the ring Inside the air gap. Since the air outlet section of the annular air outlet gap is smaller, the air outlet speed is higher. Under the guidance of the tapered inner wall of the air duct, the high-speed airflow gradually converges toward the center of the airflow during the outward flow process, forming a convergence effect, making the wind stronger and the air supply distance longer, which satisfies the distance of the vertical air conditioner indoor unit. Distance supply air and strong supply air demand.

Further, the vertical air conditioner indoor unit of the present invention has a driving mechanism that can drive the air guide to move along the axial direction of the first air outlet, so that the distance between the air guide and the inner wall of the air duct (the tapered part) is adjustable, As a result, the air volume, wind speed and air supply distance of the annular air outlet gap can be adjusted, which enriches the air supply adjustment modes. When the distance is reduced, the air output of the annular air gap will decrease, the wind speed will increase, and the air supply distance will become farther. When the distance is increased, the air volume of the annular air outlet gap will increase, the wind speed will decrease, and the air supply distance will become shorter.

Further, in the vertical air-conditioning indoor unit of the present invention, the air guide not only defines an annular air outlet gap with the inner wall of the air duct to achieve the effect of increasing the wind speed, but also can precisely guide the airflow to the annular air outlet gap, or The air flow is forced to flow toward the annular air outlet gap to force the air flow to accept the polymerization guidance of the tapered inner wall to form the final polymerization air outlet effect. The invention realizes a very good aggregated air supply effect only by improving the air duct and adding a deflector, the structure is very simple, the cost is low, the mass production promotion is easy to realize, and the concept is very clever.

Further, the vertical air-conditioning indoor unit of the present invention designs the shape of the air duct, and the upward angle of the air flow in the bottom section of the annular air outlet gap is greater than the downward inclination angle of the air flow in the top section. Since the upward angle of the upward part of the airflow is greater than the downward angle of the sinking part, the airflow after the multiple airflows are mixed will flow upward as a whole. In the cooling mode, the rising and flowing cold air can fully avoid the human body, and then scatter down after reaching the highest point, realizing a "shower-like" cooling experience. In addition, the upward blowing of the airflow is also conducive to increasing the air supply distance.

In addition, the present invention also makes the position of the air duct air inlet lower than the first air outlet, so that the bottom section of the annular air outlet gap is upstream of the air duct compared to other sections, so that the airflow flows into the bottom section more smoothly. The inner wall of the air duct adjacent to the bottom section of the first air outlet is extended in the vertical direction, so that the clearance space of the bottom section of the annular air outlet gap is larger. Based on the above two points of design, the air volume at the bottom section of the annular wind gap is larger and stronger than the other sections. The strong airflow at the bottom has an advantage in the impact and polymerization process with the upper part of the annular air gap and the airflow on both sides of the lateral direction.

Furthermore, the vertical air-conditioning indoor unit of the present invention is specially designed for the shape of the air guide, so that the air guide includes an outer end surface, an outer peripheral surface, a wind guide surface and an inner end surface. The outer peripheral surface and the inner wall of the air duct define an annular air outlet gap, and the obliquely extending air guide surface is used to guide the air flow, so that the air flow can flow to the inner wall of the air duct more smoothly and smoothly, reducing resistance loss.

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 better understand the above and other objectives, advantages and features of the present invention.

Description of the drawings

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but not restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural diagram of a vertical air conditioner indoor unit according to an embodiment of the present invention;

Figure 2 is a front view of the vertical air conditioner indoor unit shown in Figure 1;

Fig. 3 is an exploded schematic diagram of the vertical air conditioner indoor unit shown in Fig. 1;

Figure 4 is a cross-sectional view of the vertical air conditioner indoor unit N-N shown in Figure 2;

Figure 5 is an enlarged view of the top structure of Figure 4;

Fig. 6 is a schematic structural diagram of the structure shown in Fig. 5 after the air guide is moved forward;

Figure 7 is an exploded schematic diagram of the air duct;

Fig. 8 is an exploded schematic view of the air guide.

Detailed ways

The embodiment of the present invention provides a vertical air conditioner indoor unit, which is an indoor part of a split air conditioner, used to adjust indoor air, such as cooling/heating, dehumidification, introducing fresh air, and so on.

Fig. 1 is a schematic structural diagram of a vertical air conditioner indoor unit according to an embodiment of the present invention; Fig. 2 is a front view of the vertical air conditioner indoor unit shown in Fig. 1; Fig. 3 is an exploded schematic view of the vertical air conditioner indoor unit shown in Fig. 1 4 is a cross-sectional view of the vertical air conditioner indoor unit NN shown in FIG. 2; FIG. 5 is an enlarged view of the top structure in FIG. 4; FIG. 6 is a schematic diagram of the structure shown in FIG.

As shown in FIGS. 1 to 5, the vertical air conditioner indoor unit of the embodiment of the present invention may generally include a housing 10, an air duct 20, a flow guide 30 and a driving mechanism 70.

The housing 10 has a first air blowing port 11, and the first air blowing port 11 is used to blow the airflow in the housing 10 into the room and adjust the indoor air. The aforementioned airflow may be cold air produced in the cooling mode of the vertical air conditioner indoor unit, hot air produced in the heating mode, or fresh air introduced in the fresh air mode. The number of the first air outlet 11 may be one or more. The air duct 20 is provided in the housing 10 and has an air inlet 23 and a first air outlet 21 facing the first air outlet 11 for guiding the airflow in the housing 10 to the first air outlet 11.

For example, the vertical air conditioner indoor unit may be an indoor unit of an air conditioner that performs cooling/heating through a vapor compression refrigeration cycle system, and further includes a heat exchanger 40 and a fan 50. The heat exchanger 40 is arranged in the air duct 20 to exchange heat with the airflow flowing through it to form a heat exchange airflow, that is, cold air or hot air. The fan 50 is arranged in the housing 10 to encourage indoor air to enter the housing 10, and then into the air duct 20, so that it exchanges heat with the heat exchanger 40 into a heat exchange airflow, and then promotes the heat exchange airflow to flow through the air duct 20 To the first air outlet 11, it finally blows into the room from the first air outlet 11. The housing 10 may be provided with an air inlet 13 to allow indoor air to enter the housing 10 through the air inlet 13. The casing 10 can be formed by combining a front casing 101 and a rear casing 102.

As shown in Figs. 3 to 5, the inner wall of the air duct 20 near the first air outlet 21 is in a tapered shape where the flow cross-section gradually becomes smaller along the airflow direction. In other words, near the first air outlet 21, along the airflow direction, the flow cross section of the air duct 20 gradually becomes smaller. The air guide 30 is movably arranged in the air duct 20 along the axial direction of the first air outlet 21, and defines an annular air outlet gap 25 with the aforementioned tapered part of the air duct 20. The ring shape here is not limited to a circular ring shape, and may be an oblong ring shape, a square ring shape, an elliptical ring shape, and other various "ring shapes". The air guide 30 is used to guide the airflow to the annular air outlet gap 25, so that the airflow gradually converges toward the center of the airflow under the guidance of the inner wall of the air duct 20, and flows out of the first air outlet 21 and the first air outlet 11 in sequence. Figure 4 shows the direction of the air flow with arrows).

The driving mechanism 70 is used to drive the air guide 30 to move along the axial direction of the first air outlet 21 (the x-axis direction and the direction parallel to it), so as to adjust the distance between the air guide 30 and the inner wall of the air duct 20, thereby adjusting the ring shape. The amount of air out of the air gap 25. The number of the driving mechanism 70 may be one or multiple. As shown in Figures 3 to 7, two driving mechanisms 70 are provided, which are connected to different positions of the guide member 30 and act synchronously, so as to keep the guide member 30 in translation as much as possible during the movement, and avoid the movement of its various parts. The inconsistency causes it to skew.

In the embodiment of the present invention, the air flow entering the air duct 20 from the air inlet 23 of the air duct 20 will flow towards the inner wall of the air duct 20 under the guidance of the air guide 30 while flowing to the first air outlet 21, and finally flow To the annular air outlet gap 25. Since the air outlet section of the annular air outlet gap 25 is smaller, the air outlet speed thereof is higher. Under the guidance of the inner wall of the tapered air duct 20, the high-speed airflow gradually converges toward the center of the airflow during the flow to the outside of the first air outlet 21, forming a convergence effect, making the wind stronger and the air supply distance longer. Therefore, the embodiment of the present invention meets the requirements of the vertical air conditioner indoor unit for long-distance air supply and strong air supply. The air guide 30 not only defines the annular air outlet gap 25 with the inner wall of the air duct 20, so as to increase the wind speed, but also can guide the airflow to the annular air outlet gap 25, or force the airflow to flow toward the annular air outlet gap 25. , Impacting the inner wall of the air duct 20 to force the airflow to accept the polymerization and guidance of the tapered inner wall to form the final polymerization wind effect. The embodiment of the present invention achieves a very good aggregated air supply effect only by improving the shape of the air duct 20 and adding a flow guide 30. The structure is very simple, and the cost is low, it is easy to realize mass production and promotion, and the concept is very clever.

The vertical air conditioner indoor unit of the embodiment of the present invention has a driving mechanism 70, which can drive the air guide 30 to move along the axial direction of the first air outlet 21, so that the air guide 30 and the inner wall of the air duct 20 (specifically refer to the wind The distance of the tapered part of the inner wall of the duct 20 is adjustable, so that the air output, the wind speed and the air supply distance of the annular air outlet gap 25 are adjustable, which enriches the air supply adjustment mode. When the distance is reduced (for example, from the state shown in FIG. 5 to the state shown in FIG. 6), the air output of the annular air outlet gap 25 will decrease, the wind speed will increase, and the air supply distance will become longer. When the distance is increased (for example, from the state shown in FIG. 6 to the state shown in FIG. 5), the air output of the annular air outlet gap 25 will increase, the wind speed will decrease, and the air supply distance will become shorter.

In addition, the air guide 30 can be further adjusted to a state where it is in contact with the inner wall of the air duct 20 so that the annular air outlet gap disappears and the air guide 30 closes the first air outlet 21. When the vertical air conditioner indoor unit is in a shutdown/standby state or in a state where air is only supplied through the remaining air outlets, the first air outlet 21 can be selected to be closed. In this embodiment, the air guide 30 can be used to open and close the first air outlet 21, which enriches the air supply mode. When the air conditioner is turned off/standby or only uses other air outlets to supply air, it can also prevent external dust and impurities from entering the first air outlet twenty one.

In some embodiments, each drive mechanism can be a rack and pinion mechanism. Specifically, as shown in FIGS. 3 to 7, each driving mechanism 70 includes a rack 73, a gear 72 and a motor 71. The rack 73 extends along the axial direction of the first air outlet 21 and is fixed to the air guide 30. The gear 72 meshes with the rack 73. The motor 71 is installed in the air duct 20 and is used to drive the gear 72 to rotate so that the rack 73 moves along the axial direction of the first air outlet 21 to drive the air guide 30 to move in translation. The motor 71 can be rotated forward and backward, so that the air guide 30 can reciprocate and translate. The motor 71 may be a stepping motor.

In some embodiments, as shown in FIGS. 3 to 7, the inner wall of the air duct 20 extends out of the support rod 24, and the rack 73 is slidably mounted on the support rod 24 along the axial direction of the first air outlet 21 to receive The support of the support rod 24. Each rack 73 can be matched with two support rods 24, and the two support rods 24 respectively support the two ends of the rack 73 in the width direction. Since the support rod 24 is thinner, the airflow receives less resistance and can reach each position of the annular air outlet gap 25 more smoothly.

Since the vertical air conditioner indoor unit is usually installed against the wall or even near the corner of the wall at the rear side, it is required to have a stronger forward air supply capability. Therefore, in some embodiments of the present invention, as shown in FIGS. 1 to 3, the first air outlet 11 is opened on the front side of the housing 10, and the first air outlet 21 is opened on the front side of the air duct 20, so that the first air outlet 11 is opened on the front side of the air duct 20. The air outlet 11 can send air to the front for a long distance. At this time, the central axis x axis of the first air outlet 21 extends in the front-rear direction, and the aforementioned axial direction of the first air outlet 21 is the front-rear direction. The number of the driving mechanism 70 can be two, and the two racks 73 are connected to the upper and lower surfaces of the air guide 30 respectively.

In addition, other air supply openings can be provided on the housing 10 to cooperate with the first air supply opening 11 to realize multiple air supply modes. For example, as shown in Figs. 1 to 3, the casing 10 is provided with two second air outlets 12, which are located on the lateral sides of the casing 10, respectively. Correspondingly, the two lateral sides of the air duct 20 are respectively provided with second air outlets 22 to match the two second air outlets 12 respectively. The position of the two second air supply openings 12 can be lower than the first air supply opening 11. For example, the first air blowing port 11 is located at the upper part of the casing 10 and the two second air blowing ports 12 are located at the middle or lower part of the casing 10. With this arrangement, the air sent from each air outlet can be staggered in the up and down direction and left and right direction, forming an effect of enveloping the air, making the air flow more dispersed, and improving the cooling/heating speed and the comfort of the air flow of the vertical air conditioner indoor unit Spend.

As shown in Figures 1 to 3, each second air supply opening 12 can also be made into a vertical strip shape arranged in the length direction along the vertical direction, so as to facilitate its blowing downward obliquely, to achieve heating downwards, and to speed up heating. Speed, improve heating comfort. An air guide mechanism can be installed at each second air supply opening 12, for example, as shown in FIG. , Can also be used to open and close the second air outlet 12. In addition, the first air outlet 11, the first air outlet 21 and the air guide 30 can be formed as an oblong shape vertically arranged in the length direction as a whole. Oval refers to a shape formed by the connection of two parallel spaced straight sides and two symmetrically arranged arcs (usually semicircles). In this embodiment, the first air outlet 11 is an oblong shape, based on the following three considerations. On the one hand, compared to the conventionally used round air outlet, the overall shape of the oblong air outlet with the same air outlet area is more "flat", which is more conducive to air flow. On the other hand, since the length of the oblong air outlet is arranged vertically, its height (the distance from the highest point to the lowest point of the air outlet) is higher than that of the circular air outlet with the same air outlet area, and the airflow blown out is vertical. The length in the straight direction is longer. This part of the longer airflow blows forward or upwards, and then after landing in front of the air conditioner due to gravity, the covered length (the size of the airflow landing area in the front and rear direction) is longer, and the airflow coverage area is also larger. For example, in a specific model, when the air outlet height is 20cm, the airflow coverage length after landing is 2m, and when the air outlet height is 25cm, the airflow coverage length can reach 3m after landing. In the third aspect, compared with the traditional circular air supply opening, the shape of the oblong air supply opening is more matched with the shape of the housing 10 (the housing 10 is a long strip vertically arranged in the length direction), making it more coordinated and beautiful.

In some embodiments, as shown in FIGS. 4 and 5, the air duct 20 can be configured such that the upward angle of the airflow at the bottom section of the annular air outlet gap 25 is greater than the downward inclination angle of the airflow at the top section thereof, so that the annular air outlet gap 25 25. The airflow in the bottom section drives the airflow in the remaining sections to flow upward and forward together. For the embodiment where the first air outlet 11, the first air outlet 21 and the air guide 30 are all oblong vertically arranged in the length direction as a whole, the bottom edge of the first air outlet 21 refers to the first outlet The circular arc side at the bottom of the air port 21, the top edge refers to the circular arc side at the top, and the lateral side edges refer to the straight sides on both lateral sides. Corresponding to the above-mentioned bottom arc side, top arc side, and horizontal two straight sides of the first air outlet 21, respectively, are the bottom section, the top section, and the horizontal two side sections of the annular air outlet gap. The upward angle refers to the angle between the airflow direction at the bottom section of the annular air outlet gap 25 (shown by the hollow arrow in Figure 5) and the horizontal plane, and the downward inclination angle refers to the angle between the airflow direction at the top section of the annular air outlet gap 25 and the horizontal plane. Angle (if the air flow blows out horizontally, the downward inclination angle is 0°). Since the upward angle of the upward part of the airflow is greater than the downward inclination angle of the sinking part, the airflow after the multiple airflows are mixed will flow upward as a whole. In the cooling mode, the rising and flowing cold air can fully avoid the human body, and then scatter down after reaching the highest point, realizing a "shower-like" cooling experience. In addition, the upward blowing of the airflow is also conducive to increasing the air supply distance.

For example, as shown in FIGS. 4 and 5, the inner walls 251 of the air duct 20 near the top edge and lateral sides of the first air outlet 21 are gradually inclined from back to front toward the horizontal central axis (x-axis) of the first air outlet 21, The inner wall 252 adjacent to the bottom edge of the first air outlet 21 extends in the vertical direction, so that the air flow at the bottom of the annular air outlet gap 25 has a maximum upward angle of 90°, and the clearance space in the bottom section of the annular air outlet gap 25 is larger. In addition, the position of the air inlet 23 may be lower than the first air outlet 21, so that the airflow flows from the bottom to the top of the guide member 30. In this way, the bottom section of the annular air outlet gap 25 is upstream of the air duct 20 compared to other sections, so that the air flow will flow into the bottom section of the annular air outlet gap 25 first.

Based on the above two points of design, the bottom section of the annular air outlet gap 25 has a larger air volume and stronger wind than the other sections. The strong airflow at the bottom occupies an advantage in the impact and polymerization process with the upper and lateral sides of the annular air outlet gap 25, and more effectively drives the airflow to flow upward and forward together to achieve a better upward air supply effect.

In some embodiments, as shown in FIG. 3, the air duct 20 can be made to have a constricted section 27 with a cross-sectional area smaller than the remaining sections. The constricted section 27 is located on the upstream side of the air guide 30, for example, is located near the first air outlet 21. Before the airflow reaches the airflow guide 30, the constricted section 27 can accelerate the airflow, so that the airflow impacts the airflow guide 30 at a faster speed, so that the airflow guide 30 is guided to the inner wall of the air duct 20 more forcefully. In addition, as shown in FIGS. 5 and 7, a plurality of guide ribs 26 extending along the direction of the air flow can be provided on the inner wall of the air duct 20 to guide the air flow. In addition, the structural strength of the air duct 20 can be strengthened. .

FIG. 7 is an exploded schematic diagram of the air duct 20.

In some embodiments, as shown in FIGS. 3 to 7, the air duct 20 may include a front shell 201, a rear shell 202 and a water receiving tray 203. The rear and lower sides of the front shell 201 are open, and the first air outlet 21 is opened on the front shell 201. The front and lower sides of the rear shell 202 are open, and the rear shell 202 is buckled on the rear side of the front shell 201 to form a structure with an open lower side. The drain pan 203 is buckled on the lower sides of the front shell 201 and the rear shell 202 to close the open openings on the lower sides thereof. The air inlet 23 of the air duct 20 is opened on the water receiving tray 203. In this embodiment, the air duct 20 is decomposed into three parts, a front shell 201, a rear shell 202, and a water receiving tray 203, so as to facilitate the independent processing and manufacture of each part, so as to better meet the performance requirements.

As mentioned above, the vertical air conditioner indoor unit may have the heat exchanger 40 in some embodiments. As shown in FIG. 3, the heat exchanger 40 can be installed on the water receiving tray 203. The heat exchanger 40 can be of a two-stage structure. The two heat exchange sections are in the shape of a flat plate and the top ends of the two heat exchange sections are connected. On both sides. The inverted "V"-shaped structure of the heat exchanger 40 can make it have a sufficiently large heat exchange area, and make it more fully contact with the airflow flowing upward from the air inlet 23, and the heat exchange efficiency is higher. The water tray 203 is used to carry the heat exchanger 40 on the one hand, and on the other hand to receive the condensed water dripping from the surface of the heat exchanger 40 during air conditioning and cooling.

The air duct 20 can be located in the upper middle of the housing 10, and the lower part of the housing 10 can be provided with an air inlet 13. For example, the air inlet 13 shown in FIG. A hole and an air inlet grille arranged on the rear side of the housing 10. The fan 50 can be installed under the air duct 20 with the outlet 51 of the volute connected to the air inlet 23 so that the airflow entering the lower space of the housing 10 from the air inlet 13 is blown into the air duct 20. The fan 50 may be a centrifugal fan as shown in FIG. 3, or may also be a fan of other forms.

In some embodiments, as shown in FIG. 5, the outer surface of the air guide 30 includes an outer end surface 31, an outer peripheral surface 32, an air guide surface 33 and an inner end surface 34. Wherein, the outer end surface 31 faces the first air outlet 21. The outer peripheral surface 32 extends from the edge of the outer end surface 31 in a direction away from the first air outlet 21. The aforementioned annular air outlet gap 25 is mainly defined by the outer peripheral surface 32 and the inner wall of the air duct 20. The air guide surface 33 extends obliquely from the edge of the outer peripheral surface 32 in a direction away from the first air outlet 21 and toward the central axis (x-axis) of the first air outlet 21. That is, in the direction toward the first air outlet 21, the wind guide surface 33 gradually approaches the outer peripheral surface 32 and extends. The air guiding surface 33 is mainly used to guide the airflow, so that the airflow can flow to the inner wall of the air duct 20 more stably and smoothly, and reduce the resistance loss during the air guiding process. The edge of the inner end surface 34 is connected to the edge of the wind guide surface 33. The outer end surface 31, the outer peripheral surface 32, the air guide surface 33 and the inner end surface 34 can jointly constitute the entire outer surface of the air guide 30.

FIG. 8 is an exploded schematic view of the air guide 30.

In some embodiments, as shown in Fig. 8, the air guide 30 can be made into a hollow structure to make it lighter in weight, which facilitates more stable installation on the air duct 20, and also facilitates the formation of its complex outer surface shape. Specifically, the air guiding member 30 may include a first air guiding shell 301 and a second air guiding shell 302 connected by a buckle. The outer surface of the first air guiding shell 301 constitutes the aforementioned outer end surface 31 and outer peripheral surface 32. The outer surface of the two guide shells 302 constitute the aforementioned outer peripheral surface 32, the air guide surface 33, and the inner end surface 34.

So far, those skilled in the art should realize that although multiple exemplary embodiments of the present invention have been illustrated and described in detail herein, they can still be disclosed according to the present invention without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications that conform to the principles of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

A vertical air conditioner indoor unit, including:

The housing, which has a first air supply opening;

The air duct is arranged in the housing and has an air inlet and a first air outlet facing the first air outlet, and is used to guide the airflow in the housing to the first air outlet, and the air The inner wall of the passage near the first air outlet is in a tapered shape where the flow cross section gradually becomes smaller and smaller in the direction of the air flow;

The air guide is arranged in the air duct, and the tapered part thereof defines an annular air outlet gap, and the air guide is used to guide the airflow to the annular air outlet gap so that the airflow is on the inner wall of the air duct Under the guidance, gradually converge toward the center of the airflow, and flow out of the first air outlet and the first air outlet in sequence; and

The driving mechanism is used to drive the air guide to move along the axial direction of the first air outlet, so as to adjust the distance between the air guide and the inner wall of the air duct, and then adjust the ring-shaped air outlet gap. Air volume.
The vertical air conditioner indoor unit according to claim 1, wherein each of the driving mechanisms includes:

A rack extending along the axial direction of the first air outlet and fixed to the air guide;

Gear, meshing with the rack; and

The motor is installed in the air duct and used to drive the gear to rotate so that the rack moves along the axial direction of the first air outlet.
The vertical air conditioner indoor unit according to claim 2, wherein

A support rod extends from the inner wall of the air duct, and the rack is slidably mounted on the support rod along the axial direction of the first air outlet to be supported by the support rod.
The vertical air conditioner indoor unit according to claim 1, wherein

The first air supply opening is opened on the front side of the housing; and

The first air outlet is opened on the front side of the air duct.
The vertical air conditioner indoor unit according to claim 4, wherein

The housing is also provided with two second air supply openings, which are respectively located on two lateral sides of the housing and are located lower than the first air supply opening; and

The two lateral sides of the air duct are respectively provided with second air outlets to match the two second air outlets respectively.
The vertical air conditioner indoor unit according to claim 4, wherein

The air duct is configured such that the upward angle of the airflow at the bottom section of the annular air outlet gap is greater than the downward inclination angle of the airflow at the top section of the annular air outlet gap, so that the airflow at the bottom section of the annular air outlet gap drives the airflow of the remaining sections together Flow upward and forward.
The vertical air conditioner indoor unit according to claim 6, wherein

The inner walls of the air duct adjacent to the top edge and lateral side edges of the first air outlet gradually slope from back to front toward the horizontal central axis of the first air outlet, and the inner wall edge adjacent to the bottom edge of the first air outlet Extend vertically; and

The position of the air inlet is lower than the first air outlet, so that the airflow flows from the bottom to the top toward the air guide.
The vertical air conditioner indoor unit according to claim 1, wherein

The wind prop has a constricted section with a cross-sectional area smaller than the remaining sections, and the constricted section is located on the upstream side of the air guide to accelerate the air flow before it flows to the air guide.
The vertical air conditioner indoor unit according to claim 1, wherein the outer surface of the air guide includes:

The outer end surface faces the first air outlet;

The outer peripheral surface extends from the edge of the outer end surface in a direction away from the first air outlet;

The air guide surface extends obliquely from the edge of the outer peripheral surface in a direction away from the first air outlet and toward the central axis of the first air outlet; and

The inner end surface and the edge are connected to the edge of the air guide surface.
The vertical air conditioner indoor unit according to claim 1, further comprising:

The heat exchanger is arranged in the air duct and used to exchange heat with the airflow flowing through it; and

The fan is arranged in the casing and is used to encourage indoor air to enter the casing and the air duct.