Vertical air conditioner indoor unit

Abstract

The application relates to the technical field of household electrical appliances, in particular to a vertical air conditioner indoor unit. The vertical air conditioner indoor unit comprises an air conditioner shell, a first cross-flow fan and a heat exchanger. The first cross-flow fan comprises an impeller which is rotatably arranged in a first air inlet air duct and extends along the height direction of the air conditioner shell. The impeller comprises a plurality of blades which extend along the height direction of the air conditioner shell and are arranged at intervals around the axis of the impeller to form an impeller cavity. A partition is arranged in the impeller cavity and connected to the blades, so as to divide the impeller cavity into at least a first sub-cavity and a second sub-cavity which are arranged along the axial direction of the impeller. The first sub-cavity is communicated with a first upper air outlet air duct, and the second sub-cavity is communicated with a first lower air outlet air duct. The vertical air conditioner indoor unit provided by the application can prevent the air outlets from competing for air and can reduce or avoid wheezing noise.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and more particularly to a vertical air conditioner indoor unit. Background Technology

[0002] A standing air conditioner indoor unit is a device that can regulate indoor temperature and improve the comfort of users at home. In related technologies, standing air conditioner indoor units, because they have multiple air outlets, can experience competition for airflow during the air delivery process via a cross-flow fan. This can result in some outlets delivering excessively strong airflow while others deliver insufficient airflow. Furthermore, turbulence can cause noise such as hissing or panting sounds. Utility Model Content

[0003] This application discloses a vertical air conditioner indoor unit that can avoid competition for air between air outlets and reduce or avoid breathing noise.

[0004] To achieve the above objectives, this application discloses a vertical air conditioner indoor unit, comprising:

[0005] An air conditioner housing has a first air inlet duct, a first upper air outlet duct, and a first lower air outlet duct formed inside the air conditioner housing. The first upper air outlet duct and the first lower air outlet duct are respectively connected to the first air inlet duct. The air conditioner housing is provided with an air inlet, a first upper air outlet, and a first lower air outlet. The air inlet is connected to the first air inlet duct, the first upper air outlet is connected to the first upper air outlet duct, and the first lower air outlet is connected to the first lower air outlet duct.

[0006] A first cross-flow fan is rotatably disposed within the first air inlet duct;

[0007] A heat exchanger is disposed inside the air conditioner housing. When the first cross-flow fan rotates, it can draw indoor air into the first air inlet duct through the air inlet. The heat exchanger is used to heat treat the air. The first cross-flow fan is also used to blow the heat-treated air out through the first upper air outlet duct and the first upper air outlet, and / or to blow the heat-treated air out through the first lower air outlet duct and the first lower air outlet.

[0008] The first cross-flow fan includes:

[0009] An impeller is rotatably disposed in the first air inlet duct and extends along the height direction of the air conditioner casing;

[0010] The impeller includes:

[0011] Multiple blades extending along the height direction of the air conditioner casing are arranged at intervals around the axis of the impeller to form an impeller cavity;

[0012] A separator, at least a portion of which is disposed within the impeller cavity and connected to the blade, to divide the impeller cavity into at least a first sub-cavity and a second sub-cavity arranged along the axial direction of the impeller, wherein the first sub-cavity is connected to the first upper air outlet duct and the second sub-cavity is connected to the first lower air outlet duct.

[0013] Since the separator is located inside the impeller cavity, it can divide the impeller cavity into a first sub-cavity and a second sub-cavity arranged along the impeller axis. This prevents air in the first sub-cavity from passing through the separator along the impeller axis to enter the second sub-cavity, and vice versa. In other words, the air in the impeller cavity mainly flows radially along the impeller and cannot flow axially along the impeller axis.

[0014] Based on this, since the first sub-cavity is connected to the first upper air outlet duct and the second sub-cavity is connected to the first lower air outlet duct, all the air in the first sub-cavity can be discharged sequentially through the first upper air outlet duct and the first upper air outlet, and all the air in the second sub-cavity can be discharged sequentially through the first lower air outlet duct and the first lower air outlet. There will be no situation where the air in the first sub-cavity flows into the second sub-cavity along the impeller axis due to the pressure difference between the first upper air outlet duct and the first lower air outlet duct, or the air in the second sub-cavity flows into the first sub-cavity along the impeller axis.

[0015] In this way, on the one hand, it avoids a situation where a large amount of air is blown out through the first upper or lower air outlet, or where the first upper and lower air outlets compete for airflow, thus making the airflow from the first upper and lower air outlets more balanced. On the other hand, it also avoids or reduces the axial flow of air along the impeller, thereby preventing axial turbulence and reducing breathing noise to some extent.

[0016] Optionally, the separator is a separator plate, and the periphery of the separator plate is connected to the blade.

[0017] When the separator is a separator plate, the separator plate has a simple structure and is easy to process. Therefore, on the one hand, it can simplify the structure of the separator and reduce the processing difficulty of the separator. On the other hand, the separator plate can also fix the blade, thereby strengthening the mechanical strength of the blade and improving its durability.

[0018] Optionally, the thickness of the periphery of the partition plate is greater than the thickness of the middle part of the partition plate.

[0019] By making the thickness of the periphery of the partition plate greater than that of the center, the connection between the partition plate and the blades becomes stronger, thus improving the durability of the partition plate. On the other hand, it also allows the center of the partition plate to be thinner, reducing its weight and consequently the overall weight of the first cross-flow fan.

[0020] Optionally, the thickness of the partition plate gradually decreases from its periphery to its center.

[0021] By making the thickness of the partition plate gradually decrease from its periphery to its center, the thinning process of the partition plate can be made more uniform and without any breaks, thus avoiding stress concentration and preventing air leakage caused by partition plate breakage. This ensures that the first sub-cavity and the second sub-cavity can be separated by the partition plate.

[0022] Optionally, there are multiple partitions, which are arranged in an array at intervals along the axial direction of the impeller, and at least some of the partitions are located between the first upper air outlet duct and the first lower air outlet duct along the height direction of the air conditioner casing.

[0023] When there are multiple separators, since the multiple separators are arranged in an array at intervals along the axial direction of the impeller, on the one hand, the multiple separators can work together to isolate the air, which can better prevent the air from flowing along the axial direction of the impeller, thereby better preventing axial turbulence and further reducing the noise caused by turbulence.

[0024] On the other hand, multiple separators provide better fixation for the blades, which in turn makes the impeller more robust and durable.

[0025] Optionally, the cross-sectional area of ​​the first upper air outlet duct gradually decreases or remains unchanged from the direction inside the first upper air outlet duct toward the first upper air outlet.

[0026] By making the cross-sectional area of ​​the first upper air outlet duct gradually decrease or remain unchanged in the direction from the inside of the first upper air outlet to the first upper air outlet, the first upper air outlet duct can form a structure with a large interior and a small outlet, or a structure with a balanced size of interior and outlet. Compared with a structure with a small interior and a large outlet, this structure can avoid the formation of a low-speed backflow zone in the first upper air outlet duct as much as possible, thereby making the air outlet speed of the first upper air outlet faster.

[0027] Optionally, the minimum width of the first upper air outlet duct is, the diameter of the first cross-flow fan is F, and b≤F / 2.

[0028] The inventors discovered that when b > F / 2, the wind speed of the air discharged through the first upper air outlet and the first upper air outlet will be relatively low, resulting in the air delivery distance of the first upper air outlet being too short. Based on this, by making b ≤ F / 2, the air velocity of the first upper air outlet can be increased, thereby increasing the air delivery distance of the first upper air outlet.

[0029] Optionally, the air conditioner housing further includes a second air inlet duct, a second upper air outlet duct, and a second lower air outlet duct. The second air inlet duct and the first air inlet duct are arranged side by side along the width of the air conditioner housing. The air inlet is connected to the second air inlet duct. The second upper air outlet duct and the second lower air outlet duct are respectively connected to the second air inlet duct. The air conditioner housing also includes a second upper air outlet and a second lower air outlet. The second upper air outlet is connected to the second upper air outlet duct, and the second lower air outlet is connected to the second lower air outlet duct.

[0030] The vertical air conditioner indoor unit also includes a second cross-flow fan, which is rotatably disposed in the second air inlet duct and extends along the height direction of the air conditioner casing.

[0031] When the indoor unit of a vertical air conditioner also includes a second cross-flow fan, and the air conditioner casing is also equipped with a second upper air outlet and a second lower air outlet, in addition to air being discharged through the first upper air outlet and the first lower air outlet, air can also be discharged through the second upper air outlet and the second lower air outlet. The air discharge mode is more diverse, which can make the air conditioner air more evenly distributed in the room, and the cooling or heating effect is better.

[0032] Optionally, the second air inlet duct is symmetrical to the first air inlet duct about a symmetrical plane, the second upper air outlet duct is symmetrical to the first upper air outlet duct about the symmetrical plane, and the second lower air outlet duct is symmetrical to the second upper air outlet duct about the symmetrical plane, wherein the symmetrical plane is perpendicular to the width direction of the air conditioner housing and parallel to the height direction of the air conditioner housing.

[0033] By making the second air inlet duct symmetrical with respect to the first air inlet duct, the second upper air outlet duct symmetrical with respect to the first upper air outlet duct, and the second lower air outlet duct symmetrical with respect to the second upper air outlet duct, the layout of the second air inlet duct, the first air inlet duct, the second upper air outlet duct, the first upper air outlet duct, the second lower air outlet duct, and the second upper air outlet duct on the vertical air conditioner indoor unit can be made more regular, which is convenient for processing and can also improve the appearance of the vertical air conditioner indoor unit to a certain extent.

[0034] Optionally, the angle between the extension direction of the first upper air outlet duct and the plane of symmetry is α, where α ≤ 40°.

[0035] When a > 40°, the air blown out through the first and second upper air outlet ducts will be diverted to the side of the air conditioner casing, failing to converge. This results in a short air delivery distance for the air blown out through the main upper air outlet. Therefore, by making a ≤ 40°, the air blown out through the first and second upper air outlet ducts can converge and drive each other, thereby increasing the air delivery distance of the indoor unit of the vertical air conditioner.

[0036] Compared with the prior art, the beneficial effects of this application are as follows:

[0037] In this application, since the separator is disposed inside the impeller cavity, the impeller cavity can be divided into a first sub-cavity and a second sub-cavity arranged along the axial direction of the impeller by the separation effect of the separator. This prevents the air in the first sub-cavity from passing through the separator along the axial direction of the impeller to enter the second sub-cavity, and the air in the second sub-cavity from passing through the separator along the axial direction of the impeller to enter the first sub-cavity. That is, the air in the impeller cavity mainly flows radially along the impeller and cannot flow axially along the impeller.

[0038] Based on this, since the first sub-cavity is connected to the first upper air outlet duct and the second sub-cavity is connected to the first lower air outlet duct, all the air in the first sub-cavity can be discharged sequentially through the first upper air outlet duct and the first upper air outlet, and all the air in the second sub-cavity can be discharged sequentially through the first lower air outlet duct and the first lower air outlet. There will be no situation where the air in the first sub-cavity flows into the second sub-cavity along the impeller axis due to the pressure difference between the first upper air outlet duct and the first lower air outlet duct, or the air in the second sub-cavity flows into the first sub-cavity along the impeller axis.

[0039] In this way, on the one hand, it avoids a situation where a large amount of air is blown out through the first upper or lower air outlet, or where the first upper and lower air outlets compete for airflow, thus making the airflow from the first upper and lower air outlets more balanced. On the other hand, it also avoids or reduces the axial flow of air along the impeller, thereby preventing axial turbulence and reducing breathing noise to some extent. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a structural schematic diagram of a vertical air conditioner indoor unit provided in one embodiment of this application;

[0042] Figure 2 yes Figure 1 A structural schematic diagram of a vertical air conditioner indoor unit from another perspective;

[0043] Figure 3 yes Figure 2 A structural diagram of a vertical air conditioner indoor unit with some parts omitted;

[0044] Figure 4 yes Figure 3 An exploded view of a vertical air conditioner indoor unit;

[0045] Figure 5 yes Figure 4 A schematic diagram of the structure of a vertical air conditioner indoor unit, omitting the first and second cross-flow fans;

[0046] Figure 6 yes Figure 5 A structural schematic diagram of a vertical air conditioner indoor unit from another perspective;

[0047] Figure 7 yes Figure 6 A cross-sectional view of the indoor unit of the vertical air conditioner at position AA;

[0048] Figure 8 yes Figure 6 A cross-sectional view of the indoor unit of a vertical air conditioner at position BB;

[0049] Figure 9 yes Figure 3 A structural schematic diagram of a vertical air conditioner indoor unit from another perspective;

[0050] Figure 10 yes Figure 7 A schematic diagram of the heat exchanger in the diagram;

[0051] Figure 11 yes Figure 4 Schematic diagram of the structure of the first cross-flow fan in the middle;

[0052] Figure 12 yes Figure 11 A magnified view of a section at position C in the middle;

[0053] Figure 13 yes Figure 11 A schematic diagram of the structure of the first cross-flow fan in the middle from another perspective;

[0054] Figure 14 yes Figure 13 Cross-sectional view of the first cross-flow fan at the DD position;

[0055] Figure 15 yes Figure 14 A magnified view of the first cross-flow fan at position E;

[0056] Figure 16 This is a partial enlarged view of another first cross-flow fan provided in one embodiment of this application at position E;

[0057] Figure 17 yes Figure 3 A schematic diagram of the structure of a vertical air conditioner indoor unit from another perspective.

[0058] Explanation of reference numerals in the attached figures:

[0059] 1-Air conditioner casing; 11a-First air inlet duct; 11b-Second air inlet duct; 12a-First upper air outlet duct; 12b-Second upper air outlet duct; 13a-First lower air outlet duct; 13b-Second lower air outlet duct; 14-Air inlet; 15a-First upper air outlet; 15b-Second upper air outlet; 15c-Main upper air outlet; 16a-First lower air outlet; 16b-Second lower air outlet;

[0060] 2-First cross-flow fan; 21-Impeller; 211-Blade; 212-Impeller cavity; 2121-First sub-cavity; 2122-Second sub-cavity; 22-Separator;

[0061] 3-Heat exchanger;

[0062] 4-Second cross-flow fan;

[0063] 100-Vertical air conditioner indoor unit;

[0064] M-plane of symmetry. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0067] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0068] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0069] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0070] Before explaining the technical solution of this application, the background technology of this application shall be explained first.

[0071] A vertical air conditioner indoor unit is a device that can regulate indoor temperature and improve user comfort at home. In related technologies, vertical air conditioner indoor units, due to their multiple air outlets, experience competition for airflow during the cross-flow fan process. This results in some outlets delivering excessive airflow while others deliver insufficient airflow, and may also cause turbulence and other noises. Therefore, this application provides a novel vertical air conditioner indoor unit to solve these problems.

[0072] The technical solution of this application will be described below with reference to specific embodiments and accompanying drawings.

[0073] Figure 1 This is a structural schematic diagram of a vertical air conditioner indoor unit 100 provided in one embodiment of this application. Figure 2 yes Figure 1 A structural schematic diagram of the vertical air conditioner indoor unit 100 from another perspective. Figure 3 yes Figure 2 The diagram shows the structure of a vertical air conditioner indoor unit with some parts omitted.

[0074] See Figure 1 , Figure 2 and Figure 3 The vertical air conditioner indoor unit 100 includes an air conditioner casing 1.

[0075] The shape of the air conditioner housing 1 can be cylindrical or cuboid, etc., and this embodiment does not limit this. The material of the air conditioner housing 1 can be plastic or metal, etc., and this embodiment does not limit this either.

[0076] In some embodiments, see Figure 4 and Figure 5 , Figure 4 yes Figure 3 An exploded view of a vertical air conditioner indoor unit 100. Figure 5 yes Figure 4 The diagram shows the structure of the vertical air conditioner indoor unit 100 after omitting the first cross-flow fan 2 and the second cross-flow fan 4. The air conditioner casing 1 has a first air inlet duct 11a.

[0077] The first air inlet duct 11a can be roughly cylindrical, and the cylindrical first air inlet duct 11a can be roughly along the height direction of the air conditioner casing 1. Figure 4 (Extends along the Z-axis).

[0078] Figure 6 yes Figure 5 A structural schematic diagram of the vertical air conditioner indoor unit 100 from another perspective. Figure 7 yes Figure 6 A cross-sectional view of the vertical air conditioner indoor unit 100 at position AA. Figure 8 yes Figure 6 A cross-sectional view of the vertical air conditioner indoor unit 100 at position BB.

[0079] See Figure 6 , Figure 7 and Figure 8 In some embodiments, a first upper air outlet duct 12a and a first lower air outlet duct 13a are also formed inside the air conditioner housing 1, and the first upper air outlet duct 12a and the first lower air outlet duct 13a are respectively connected to the first air inlet duct 11a.

[0080] Since the first upper air outlet duct 12a and the first lower air outlet duct 13a are respectively connected to the first air inlet duct 11a, the air in the first air inlet duct 11a can enter the first upper air outlet duct 12a and the first lower air outlet duct 13a respectively.

[0081] In some embodiments, see Figure 3 and Figure 9 , Figure 9 yes Figure 3 The diagram shows the structure of the vertical air conditioner indoor unit 100 from another perspective. The air conditioner casing 1 is provided with an air inlet 14, a first upper air outlet 15a and a first lower air outlet 16a. The air inlet 14 is connected to the first air inlet duct 11a, the first upper air outlet 15a is connected to the first upper air outlet duct 12a, and the first lower air outlet 16a is connected to the first lower air outlet duct 13a.

[0082] The air inlet 14 can be located on the back of the air conditioner housing 1, the first upper air outlet 15a can be located on the front of the air conditioner housing 1, and the first lower air outlet 16a can be located on the left and right sides of the air conditioner housing 1. Of course, the air inlet 14, the first upper air outlet 15a, and the first lower air outlet 16a can also be located in other positions on the air conditioner housing 1. This embodiment does not limit this.

[0083] Since the air inlet 14 is connected to the first air inlet duct 11a, the first upper air outlet 15a is connected to the first upper air outlet duct 12a, and the first lower air outlet 16a is connected to the first lower air outlet duct 13a, the air that enters the first air inlet duct 11a through the air inlet 14 can be blown out through the first upper air outlet duct 12a and the first upper air outlet 15a, or it can be blown out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0084] In some embodiments, see Figure 4 The vertical air conditioner indoor unit 100 also includes a first cross-flow fan 2, which is rotatably disposed in the first air inlet duct 11a.

[0085] Since the first cross-flow fan 2 is rotatably disposed in the first air inlet duct 11a, when the first cross-flow fan 2 rotates, it can draw indoor air into the first air inlet duct 11a through the air inlet 14 and blow it out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or blow it out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0086] Among them, see Figure 4 The first cross-flow fan 2 can be along the height direction of the air conditioner casing 1 ( Figure 4 (Extends along the Z-axis).

[0087] In some embodiments, see Figure 7 and Figure 10 , Figure 10 yes Figure 7 The schematic diagram of the structure of the heat exchanger 3 in the vertical air conditioner indoor unit 100 also includes the heat exchanger 3, which is disposed inside the air conditioner casing 1. When the first cross-flow fan 2 rotates, it can draw indoor air into the first air inlet duct 11a through the air inlet 14. The heat exchanger 3 is used to heat treat the air. The first cross-flow fan 2 is also used to blow the heat-treated air out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or to blow the heat-treated air out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0088] Since the first cross-flow fan 2 can draw indoor air into the first air intake duct 11a through the air inlet 14 when it rotates, and since the heat exchanger 3 is installed inside the air conditioner casing 1, the heat exchanger 3 can heat the air during the process of drawing indoor air into the first air intake duct 11a through the air inlet 14. For example, it can heat or cool the air. Then, the first cross-flow fan 2 can blow the heat-treated air out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or blow the heat-treated air out through the first lower air outlet duct 13a and the first lower air outlet 16a. In this way, the purpose of heating or cooling the room can be achieved.

[0089] Since the heat-treated air can be blown out through the first upper air outlet 15a and / or through the first lower air outlet 16a, the heat-treated air can be obtained at both high and low places in the room, thereby making the temperature at various heights in the room more balanced and improving the user experience.

[0090] Taking the air conditioner casing 1 as a cuboid as an example, the aforementioned first upper air outlet 15a can be located on the front of the air conditioner casing 1. When the first upper air outlet 15a is located on the front of the air conditioner casing 1, the first upper air outlet 15a can face the indoor user space, and the air blown out through the first upper air outlet 15a can form a frontal wind and be sent to a farther place. Therefore, the cooling or heating effect is better.

[0091] The aforementioned first lower air outlet 16a can be located on the left and right sides of the air conditioner housing 1. When the first lower air outlet 16a is located on the left and right sides of the air conditioner housing 1, the air blown out through the first lower air outlet 16a can form a wraparound wind, which is more gentle.

[0092] See Figure 10 The shape of the cross-section of the heat exchanger 3 can be approximately U-shaped or any other possible shape, and this embodiment does not limit this.

[0093] In some embodiments, see Figure 4 and Figure 11 , Figure 11 yes Figure 4 The first cross-flow fan 2 is shown in the schematic diagram. The first cross-flow fan 2 includes an impeller 21, which is rotatably disposed in the first air inlet duct 11a and extends along the height direction of the air conditioner casing 1.

[0094] The impeller 21 can be cylindrical. When the impeller 21 rotates, it can draw air through the impeller 21 radially, thereby achieving the purpose of blowing air out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or blowing air out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0095] In some embodiments, see Figure 11 and Figure 12 , Figure 12 yes Figure 11 The enlarged view at position C shows that the impeller 21 includes multiple blades 211 extending along the height direction of the air conditioner casing 1. The multiple blades 211 are arranged at intervals around the axis of the impeller 21 to form an impeller cavity 212.

[0096] Since multiple blades 211 are arranged at intervals around the axis of the impeller 21 to form an impeller cavity 212, when the multiple blades 211 rotate around the axis of the impeller 21, a suction effect can be formed, thereby drawing air into the impeller cavity 212 through the gaps between the blades 211, and continuing to pass through the gaps between the blades 211 radially along the impeller 21 and exiting the impeller cavity 212. This can achieve the purpose of blowing air out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or blowing air out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0097] In some embodiments, see Figure 11 and Figure 12 The first cross-flow fan 2 also includes a separator 22, at least a portion of which is disposed within the impeller cavity 212 and connected to the blades 211, to divide the impeller cavity 212 into at least a first sub-cavity 2121 and a second sub-cavity 2122 arranged along the axial direction of the impeller 21. See [reference needed] Figure 7 and Figure 11 The first sub-cavity 2121 is connected to the first upper air outlet duct 12a, see reference. Figure 8 and Figure 11 The second sub-cavity 2122 is connected to the first lower air outlet duct 13a.

[0098] Since the separator 22 is disposed inside the impeller cavity 212, the impeller cavity 212 can be divided into a first sub-cavity 2121 and a second sub-cavity 2122 arranged along the axial direction of the impeller 21 by the separator 22. This prevents the air in the first sub-cavity 2121 from passing through the separator 22 along the axial direction of the impeller 21 to enter the second sub-cavity 2122, and the air in the second sub-cavity 2122 from passing through the separator 22 along the axial direction of the impeller 21 to enter the first sub-cavity 2121. In other words, the air in the impeller cavity 212 mainly flows radially along the impeller 21 and cannot flow axially along the impeller 21.

[0099] Based on this, since the first sub-cavity 2121 is connected to the first upper air outlet duct 12a and the second sub-cavity 2122 is connected to the first lower air outlet duct 13a, all the air in the first sub-cavity 2121 can be discharged sequentially through the first upper air outlet duct 12a and the first upper air outlet 15a, and all the air in the second sub-cavity 2122 can be discharged sequentially through the first lower air outlet duct 13a and the first lower air outlet 16a. There will be no situation where the air in the first sub-cavity 2121 flows into the second sub-cavity 2122 along the axial direction of the impeller 21 due to the pressure difference between the first upper air outlet duct 12a and the first lower air outlet duct 13a, or where the air in the second sub-cavity 2122 flows into the first sub-cavity 2121 along the axial direction of the impeller 21.

[0100] In this way, on the one hand, it avoids the situation where the first upper air outlet 15a and the first lower air outlet 16a compete for airflow, causing a large amount of air to be blown out through either the first upper air outlet 15a or the first lower air outlet 16a, thus making the airflow from the first upper air outlet 15a and the first lower air outlet 16a more balanced. On the other hand, it also avoids or reduces the occurrence of airflow along the axial direction of the impeller 21, thereby avoiding axial turbulence and reducing noise caused by turbulence to a certain extent.

[0101] It should be noted that the division of the impeller cavity 212 into a first sub-cavity 2121 and a second sub-cavity 2122 arranged along the axial direction of the impeller 21 by the aforementioned separator 22 can be understood in a broad sense. That is, the first sub-cavity 2121 and the second sub-cavity 2122 can be completely isolated from each other or partially isolated. It is only necessary to ensure that the air in the first sub-cavity 2121 cannot directly pass through the separator 22 along the axial direction of the impeller 21 and enter the second sub-cavity 2122, or simply to ensure that the air in the second sub-cavity 2122 cannot directly pass through the separator 22 along the axial direction of the impeller 21 and enter the first sub-cavity 2121. This embodiment does not limit this in a narrow sense.

[0102] In some embodiments, see Figure 3 , Figure 4and Figure 7 The vertical air conditioner indoor unit 100 includes an air conditioner casing 1, a first cross-flow fan 2, and a heat exchanger 3, wherein, see... Figure 7 and Figure 8 The air conditioner housing 1 contains a first air inlet duct 11a, a first upper air outlet duct 12a, and a first lower air outlet duct 13a. The first upper air outlet duct 12a and the first lower air outlet duct 13a are respectively connected to the first air inlet duct 11a. (See also...) Figure 3 The air conditioner housing 1 is provided with an air inlet 14, a first upper air outlet 15a, and a first lower air outlet 16a. The air inlet 14 is connected to the first air inlet duct 11a, the first upper air outlet 15a is connected to the first upper air outlet duct 12a, and the first lower air outlet 16a is connected to the first lower air outlet duct 13a. The first cross-flow fan 2 is rotatably disposed in the first air inlet duct 11a. The heat exchanger 3 is disposed in the air conditioner housing 1. When the first cross-flow fan 2 rotates, it can draw indoor air into the first air inlet duct 11a through the air inlet 14. The heat exchanger 3 is used to heat treat the air. The first cross-flow fan 2 is also used to blow the heat-treated air out through the first upper air outlet duct 12a and the first upper air outlet 15a, and / or to blow the heat-treated air out through the first lower air outlet duct 13a and the first lower air outlet 16a.

[0103] See Figure 11 and Figure 12 The first cross-flow fan 2 includes an impeller 21 and a separator 22. The impeller 21 is rotatably disposed in the first air inlet duct 11a and extends along the height direction of the air conditioner housing 1. The impeller 21 includes a plurality of blades 211 extending along the height direction of the air conditioner housing 1. The plurality of blades 211 are arranged at intervals around the axis of the impeller 21 to form an impeller cavity 212. The separator 22 is disposed in the impeller cavity 212 and connected to the blades 211 to divide the impeller cavity 212 into at least a first sub-cavity 2121 and a second sub-cavity 2122 arranged along the axial direction of the impeller 21. The first sub-cavity 2121 communicates with the first upper air outlet duct 12a, and the second sub-cavity 2122 communicates with the first lower air outlet duct 13a.

[0104] In this embodiment, since the separator 22 is disposed inside the impeller cavity 212, the impeller cavity 212 can be divided into a first sub-cavity 2121 and a second sub-cavity 2122 arranged along the axial direction of the impeller 21 by the separator 22. This prevents the air in the first sub-cavity 2121 from passing through the separator 22 along the axial direction of the impeller 21 to enter the second sub-cavity 2122, and the air in the second sub-cavity 2122 from passing through the separator 22 along the axial direction of the impeller 21 to enter the first sub-cavity 2121. That is, the air in the impeller cavity 212 mainly flows radially along the impeller 21 and cannot flow axially along the impeller 21.

[0105] Based on this, since the first sub-cavity 2121 is connected to the first upper air outlet duct 12a and the second sub-cavity 2122 is connected to the first lower air outlet duct 13a, all the air in the first sub-cavity 2121 can be discharged sequentially through the first upper air outlet duct 12a and the first upper air outlet 15a, and all the air in the second sub-cavity 2122 can be discharged sequentially through the first lower air outlet duct 13a and the first lower air outlet 16a. There will be no situation where the air in the first sub-cavity 2121 flows into the second sub-cavity 2122 along the axial direction of the impeller 21 due to the pressure difference between the first upper air outlet duct 12a and the first lower air outlet duct 13a, or the air in the second sub-cavity 2122 flows into the first sub-cavity 2121 along the axial direction of the impeller 21.

[0106] In this way, on the one hand, it avoids the situation where a large amount of air is blown out through the first upper air outlet 15a or the first lower air outlet 16a, and the two outlets compete for airflow, making the airflow from the first upper air outlet 15a and the first lower air outlet 16a more balanced. On the other hand, it also avoids or reduces the axial flow of air along the impeller 21, thereby avoiding axial turbulence and reducing breathing noise to a certain extent.

[0107] In some embodiments, see Figure Figure 13 , Figure 14 and Figure 15 , Figure 13 yes Figure 11 A schematic diagram of the structure of the first cross-flow fan 2 from another perspective. Figure 14 yes Figure 13 A cross-sectional view of the first cross-flow fan 2 at the DD position. Figure 15 yes Figure 14 The first cross-flow fan 2 is shown in a partial enlarged view at position E. The separator 22 is a separator plate, and the periphery of the separator plate is connected to the blade 211.

[0108] When the separator 22 is a separator plate, since the separator plate has a simple structure and is easy to process, on the one hand, it can simplify the structure of the separator 22 and reduce the processing difficulty of the separator 22. On the other hand, the separator plate can also fix the blade 211, thereby strengthening the mechanical strength of the blade 211 and improving the durability of the blade 211.

[0109] Of course, in other embodiments, the separator 22 may also be a separator sphere or other possible shapes, and this embodiment does not limit this.

[0110] In some embodiments, see Figure 16 , Figure 16This is a partial enlarged view of another first cross-flow fan 2 provided in one embodiment of this application at position E, where the thickness of the periphery of the partition plate is greater than the thickness of the middle part of the partition plate.

[0111] By making the thickness of the periphery of the partition plate greater than that of the center, the connection between the partition plate and the blade 211 can be made stronger, thereby improving the durability of the partition plate. On the other hand, the center of the partition plate can be made thinner, thereby reducing the weight of the partition plate and, consequently, the weight of the entire first cross-flow fan 2.

[0112] In some embodiments, see Figure 16 The thickness of the partition plate gradually decreases from its periphery to its center.

[0113] By making the thickness of the partition plate gradually decrease from its periphery to its center, the thinning process of the partition plate can be made more uniform and without any breaks, thereby avoiding stress concentration and preventing air leakage caused by partition plate breakage. This ensures that the first sub-cavity 2121 and the second sub-cavity 2122 can be separated by the partition plate.

[0114] In some embodiments, see Figure 11 The number of separators 22 is multiple, and the multiple separators 22 are arranged in an array at intervals along the axial direction of the impeller 21. At least some of the separators 22 are located between the first upper air outlet duct 12a and the first lower air outlet duct 13a along the height direction of the air conditioner casing 1.

[0115] When there are multiple separators 22, since the multiple separators 22 are arranged in an array at intervals along the axial direction of the impeller 21, on the one hand, the multiple separators 22 can work together to isolate the air, which can better prevent the air from flowing along the axial direction of the impeller 21, thereby better preventing axial turbulence and further reducing the noise caused by turbulence.

[0116] On the other hand, the multiple separators 22 provide better fixation for the blades 211, which in turn makes the impeller 21 more robust and durable.

[0117] In some embodiments, see Figure 7 From the inside of the first upper air outlet duct 12a to the first upper air outlet 15a, the cross-sectional area of ​​the first upper air outlet duct 12a gradually decreases or remains unchanged.

[0118] By making the cross-sectional area of ​​the first upper air outlet 12a gradually decrease or remain unchanged in the direction from inside the first upper air outlet 12a to the first upper air outlet 15a, the first upper air outlet 12a can form a structure with a large interior and a small outlet, or a structure with a balanced interior and outlet size. Compared with a structure with a small interior and a large outlet, this structure can avoid the formation of a low-speed backflow zone in the first upper air outlet 12a as much as possible, thereby making the air outlet speed of the first upper air outlet 15a faster.

[0119] In some embodiments, see Figure 7 and Figure 13 The minimum width of the first upper air outlet duct 12a is b, and the diameter of the first cross-flow fan 2 is F, where b ≤ F / 2.

[0120] The inventors discovered that when b > F / 2, the wind speed of the air discharged through the first upper air outlet duct 12a and the first upper air outlet 15a will be relatively low, which will result in the air delivery distance of the first upper air outlet 15a being too short. Based on this, by making b ≤ F / 2, the air velocity of the first upper air outlet 15a can be increased, thereby increasing the air delivery distance of the first upper air outlet 15a.

[0121] In some embodiments, see Figure 7 , Figure 8 and Figure 9 The air conditioner housing 1 also contains a second air inlet duct 11b, a second upper air outlet duct 12b, and a second lower air outlet duct 13b. The second air inlet duct 11b and the first air inlet duct 11a are located along the width direction of the air conditioner housing 1. Figure 8 The air inlets 14 and 13b are arranged side-by-side along the X-axis. The air inlet 14 is connected to the second air inlet duct 11b. The second upper air outlet duct 12b and the second lower air outlet duct 13b are respectively connected to the second air inlet duct 11b. (See below) Figure 3 and Figure 17 , Figure 17 yes Figure 3 The diagram shows the structure of the vertical air conditioner indoor unit 100 from another perspective. The air conditioner casing 1 is also provided with a second upper air outlet 15b and a second lower air outlet 16b. The second upper air outlet 15b is connected to the second upper air outlet duct 12b, and the second lower air outlet 16b is connected to the second lower air outlet duct 13b.

[0122] See Figure 4 The vertical air conditioner indoor unit 100 also includes a second cross-flow fan 4, which is rotatably disposed in the second air inlet duct 11b and extends along the height direction of the air conditioner casing 1.

[0123] When the second cross-flow fan 4 rotates, it can draw indoor air into the second air inlet duct 11b through the air inlet 14. The heat exchanger 3 can heat-treat the air. The second cross-flow fan 4 can blow the heat-treated air out through the second upper air outlet duct 12b and the second upper air outlet 15b, and / or blow the heat-treated air out through the second lower air outlet duct 13b and the second lower air outlet 16b, so as to achieve the purpose of heating or cooling the room.

[0124] When the indoor unit 100 of the vertical air conditioner also includes a second cross-flow fan 4 and the air conditioner casing 1 is also provided with a second upper air outlet 15b and a second lower air outlet 16b, in addition to air being discharged through the first upper air outlet 15a and the first lower air outlet 16a, air can also be discharged through the second upper air outlet 15b and the second lower air outlet 16b, making the air discharge mode more diverse, which can make the air conditioner air more evenly distributed in the room, and the cooling or heating effect is better.

[0125] Specifically, the structure of the second air inlet duct 11b can be the same as or similar to the structure of the first air inlet duct 11a, the structure of the second upper air outlet duct 12b can be the same as or similar to the structure of the first upper air outlet duct 12a, and the structure of the second lower air outlet duct 13b can be the same as or similar to the structure of the first lower air outlet duct 13a. This embodiment will not be described in detail here.

[0126] Taking the air conditioner housing 1 as a cuboid as an example, the aforementioned second lower air outlet 16b and first lower air outlet 16a can be respectively located on the left and right sides of the air conditioner housing 1. When the second lower air outlet 16b and the first lower air outlet 16a are respectively located on the left and right sides of the air conditioner housing 1, an environmentally friendly and gentler airflow can be generated.

[0127] The second lower air outlet 16b and the first lower air outlet 16a can both be elongated or other possible shapes, and this embodiment does not limit them.

[0128] The first upper air outlet 15a and the second upper air outlet 15b mentioned above can be located on the front of the air conditioner housing 1. When the first upper air outlet 15a and the second upper air outlet 15b are located on the front of the air conditioner housing 1, front air can be delivered to a farther place, thus improving the cooling or heating effect.

[0129] In some embodiments, see Figure 3The first upper air outlet 15a and the second upper air outlet 15b can be connected, so that the first upper air outlet 15a and the second upper air outlet 15b together form a large total upper air outlet 15c. In this way, the air blown out through the first upper air outlet duct 12a and the air blown out through the second upper air outlet duct 12b can converge at the total upper air outlet 15c and drive each other, thereby increasing the air delivery distance of the vertical air conditioner indoor unit 100.

[0130] The shape of the above-mentioned air outlet 15c can be circular or any other possible shape, and this embodiment does not limit it.

[0131] In some embodiments, see Figure 7 and Figure 8 The second air inlet duct 11b is symmetrical to the first air inlet duct 11a about the plane of symmetry m, the second upper air outlet duct 12b is symmetrical to the first upper air outlet duct 12a about the plane of symmetry m, and the second lower air outlet duct 13b is symmetrical to the second upper air outlet duct 12b about the plane of symmetry m. The plane of symmetry m is perpendicular to the width direction of the air conditioner housing 1 and parallel to the height direction of the air conditioner housing 1.

[0132] By making the second air inlet duct 11b symmetrical with the first air inlet duct 11a about the plane of symmetry m, the second upper air outlet duct 12b symmetrical with the first upper air outlet duct 12a about the plane of symmetry m, and the second lower air outlet duct 13b symmetrical with the second upper air outlet duct 12b about the plane of symmetry m, the layout of the second air inlet duct 11b, the first air inlet duct 11a, the second upper air outlet duct 12b, the first upper air outlet duct 12a, the second lower air outlet duct 13b, and the second upper air outlet duct 12b on the vertical air conditioner indoor unit 100 is relatively regular, which facilitates processing and can also improve the appearance of the vertical air conditioner indoor unit 100 to a certain extent.

[0133] Among them, see Figure 7 The angle between the extension direction of the first upper air outlet duct 12a and the plane of symmetry m is a, where a ≤ 40°.

[0134] The invention research found that when a > 40°, the air blown out through the first upper air outlet duct 12a and the air blown out through the second upper air outlet duct 12b will be diverted to the side of the air conditioner casing 1, and will not be able to form a converging effect. As a result, the air delivery distance of the air blown out through the main upper air outlet 15c is too short. Based on this, by making a ≤ 40°, the air blown out through the first upper air outlet duct 12a and the air blown out through the second upper air outlet duct 12b can form a converging effect and drive each other, thereby improving the air delivery distance of the vertical air conditioner indoor unit 100.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vertical air conditioner indoor unit (100), characterized in that, include: An air conditioner housing (1) has a first air inlet duct (11a), a first upper air outlet duct (12a), and a first lower air outlet duct (13a) formed inside the air conditioner housing (1). The first upper air outlet duct (12a) and the first lower air outlet duct (13a) are respectively connected to the first air inlet duct (11a). An air inlet (14), a first upper air outlet (15a), and a first lower air outlet (16a) are provided on the air conditioner housing (1). The air inlet (14) is connected to the first air inlet duct (11a), the first upper air outlet (15a) is connected to the first upper air outlet duct (12a), and the first lower air outlet (16a) is connected to the first lower air outlet duct (13a). The first cross-flow fan (2) is rotatably disposed in the first air inlet duct (11a); A heat exchanger (3) is disposed inside the air conditioner housing (1). When the first cross-flow fan (2) rotates, it can draw indoor air into the first air inlet duct (11a) through the air inlet (14). The heat exchanger (3) is used to heat treat the air. The first cross-flow fan (2) is also used to blow the heat-treated air out through the first upper air outlet duct (12a) and the first upper air outlet (15a), and / or to blow the heat-treated air out through the first lower air outlet duct (13a) and the first lower air outlet (16a). The first cross-flow fan (2) includes: Impeller (21), which is rotatably disposed in the first air inlet duct (11a) and extends along the height direction of the air conditioner casing (1); The impeller (21) includes: Multiple blades (211) extending along the height direction of the air conditioner casing (1) are arranged at intervals around the axis of the impeller (21) to form an impeller cavity (212). A separator (22) is provided in at least part of the structure of the impeller cavity (212) and connected to the blade (211) to divide the impeller cavity (212) into a first sub-cavity (2121) and a second sub-cavity (2122) arranged along the axial direction of the impeller (21). The first sub-cavity (2121) is connected to the first upper air outlet duct (12a), and the second sub-cavity (2122) is connected to the first lower air outlet duct (13a).

2. The vertical air conditioner indoor unit (100) according to claim 1, characterized in that, The separator (22) is a separator plate, and the periphery of the separator plate is connected to the blade (211).

3. The vertical air conditioner indoor unit (100) according to claim 2, characterized in that, The thickness of the periphery of the partition plate is greater than the thickness of the middle part of the partition plate.

4. The vertical air conditioner indoor unit (100) according to claim 3, characterized in that, The thickness of the partition plate gradually decreases from its periphery to its center.

5. The vertical air conditioner indoor unit (100) according to claim 1, characterized in that, The number of the separators (22) is multiple, and the multiple separators (22) are arranged in an array at intervals along the axial direction of the impeller (21). At least some of the separators (22) are located between the first upper air outlet duct (12a) and the first lower air outlet duct (13a) along the height direction of the air conditioner casing (1).

6. The vertical air conditioner indoor unit (100) according to any one of claims 1-5, characterized in that, From the direction of the first upper air outlet duct (12a) towards the first upper air outlet (15a), the cross-sectional area of ​​the first upper air outlet duct (12a) gradually decreases or remains unchanged.

7. The vertical air conditioner indoor unit (100) according to any one of claims 1-5, characterized in that, The minimum width of the first upper air outlet duct (12a) is b, and the diameter of the first cross-flow fan (2) is F, where b ≤ F / 2.

8. The vertical air conditioner indoor unit (100) according to any one of claims 1-5, characterized in that, The air conditioner housing (1) also has a second air inlet duct (11b), a second upper air outlet duct (12b) and a second lower air outlet duct (13b) formed inside. The second air inlet duct (11b) and the first air inlet duct (11a) are arranged side by side along the width direction of the air conditioner housing (1). The air inlet (14) is connected to the second air inlet duct (11b). The second upper air outlet duct (12b) and the second lower air outlet duct (13b) are respectively connected to the second air inlet duct (11b). The air conditioner housing (1) also has a second upper air outlet (15b) and a second lower air outlet (16b). The second upper air outlet (15b) is connected to the second upper air outlet duct (12b), and the second lower air outlet (16b) is connected to the second lower air outlet duct (13b). The vertical air conditioner indoor unit (100) also includes a second cross-flow fan (4), which is rotatably disposed in the second air inlet duct (11b) and extends along the height direction of the air conditioner casing (1).

9. The vertical air conditioner indoor unit (100) according to claim 8, characterized in that, The second air inlet duct (11b) is symmetrical to the first air inlet duct (11a) about the plane of symmetry (m), the second upper air outlet duct (12b) is symmetrical to the first upper air outlet duct (12a) about the plane of symmetry (m), and the second lower air outlet duct (13b) is symmetrical to the second upper air outlet duct (12b) about the plane of symmetry (m). The plane of symmetry (m) is perpendicular to the width direction of the air conditioner housing (1) and parallel to the height direction of the air conditioner housing (1).

10. The vertical air conditioner indoor unit (100) according to claim 9, characterized in that, The angle between the extension direction of the first upper air outlet duct (12a) and the symmetry plane (m) is a, where a ≤ 40°.

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