A wall-mounted air conditioner indoor unit

Abstract

The application relates to the air conditioning technical field, in particular to a wall-mounted air conditioner indoor unit. The indoor unit comprises a casing, the casing is provided with a casing air inlet, an upper air outlet and a lower air outlet, the casing is internally provided with a heat exchanger, a fan, a flow dividing element, a volute, a main air duct element, an upper air duct element, a lower air duct element and a guide air element, the minimum distance between the main air duct element and the volute throat surface is a; the upper air duct element and the flow dividing element form an upper air duct communicated with the upper air outlet, the minimum distance between the upper air duct element and the flow dividing element is c, and c < a; along the front-rear direction of the casing, the lower air duct element and the flow dividing element form a lower air duct communicated with the lower air outlet; the guide air element is rotatably arranged in the main air duct; when the guide air element is in a first position, the distance between the guide air element and the flow dividing element along the front-rear direction of the casing is e, and 15mm <= e <= 30mm. The application can reduce the risk of generating wheezing noise due to airflow division in the upper air outlet state, thereby improving the user experience.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a wall-mounted air conditioning indoor unit. Background Technology

[0002] In the field of wall-mounted air conditioner indoor unit design, in order to meet the diverse air outlet needs of users, a common design is to have an upper air outlet on the top front side of the casing and a lower air outlet at the bottom of the casing. At the same time, an air guide is movably installed inside the casing. The function of the air guide is to close or open the upper air duct and the lower air duct, wherein the upper air duct is connected to the upper air outlet and the lower air duct is connected to the lower air outlet.

[0003] When the indoor unit of a wall-mounted air conditioner is in the upward air outlet state, that is, the air guide closes the downward air duct and guides the airflow to the upward air duct. Since the width of the upward air duct is less than the minimum width of the duct throat, a split phenomenon will occur when the airflow enters the upward air duct. Although most of the airflow can be smoothly discharged through the upward air outlet, some airflow will still flow in the opposite direction. This part of the reverse airflow interferes with the airflow that subsequently enters the upward air duct, which will generate vortex fluctuations at the connection between the upward air duct and the air guide, thereby producing a breathing noise, which in turn affects the user's experience. Utility Model Content

[0004] This application discloses a wall-mounted air conditioner indoor unit that can reduce the risk of breathing noise caused by airflow diversion when the air is in the upward air outlet state, thereby improving the user experience.

[0005] To achieve the above objectives, this application discloses a wall-mounted air conditioner indoor unit, comprising:

[0006] A housing, the housing having an air inlet, an upper air outlet, and a lower air outlet, the air inlet being located at the top front side of the housing, and at least a portion of the lower air outlet being located at the bottom of the housing, the housing containing:

[0007] A heat exchanger for exchanging heat with the airflow flowing into the housing;

[0008] A fan is used to introduce airflow into the housing through the air inlet of the housing, and after heat exchange by the heat exchanger, it is sent into the room through the upper air outlet and / or the lower air outlet.

[0009] The flow divider is disposed on the front side of the fan and can cause the airflow blown to the flow divider to flow upward or downward;

[0010] A volute, disposed within the housing, contains a heat exchange air duct. The air inlet of the heat exchange air duct is connected to the air inlet of the housing, and the air outlet of the heat exchange air duct faces the distributor. The volute includes:

[0011] The anterior cochlear tongue, comprising:

[0012] The first side is close to the fan;

[0013] The second side gradually slopes upward from the rear side of the housing towards the front side;

[0014] A cochlear throat surface, wherein the cochlear throat surface is connected between the first surface and the second surface;

[0015] The main air duct component is located below the front volute tongue and extends toward the lower air outlet. The main air duct component forms a main air duct with the first surface and the second surface. The air inlet end of the main air duct is connected to the air outlet side of the fan. The minimum distance between the main air duct component and the volute throat surface is a.

[0016] An upper air duct is located above the front volute and extends toward the upper air outlet. Along the front-rear direction of the housing, the upper air duct and the diverter form an upper air duct that communicates with the upper air outlet. The upper air duct is configured to guide the airflow entering the upper air duct to be delivered outward through the upper air outlet. The minimum distance between the upper air duct and the diverter is c, and c < a.

[0017] A lower air duct component is located below the front volute and extends toward the lower air outlet. Along the front-rear direction of the housing, the lower air duct component and the diverter component form a lower air duct that communicates with the lower air outlet. The lower air duct is configured to guide the airflow entering the lower air duct to be delivered outward through the lower air outlet.

[0018] An air guide component is rotatably disposed within the main air duct;

[0019] When the air guide is in the first position, the distance between the air guide and the diverter along the front-rear direction of the housing is e, 15mm≤e≤30mm. The first position is configured such that the air guide can block at least part of the lower air duct so that the upper air duct is connected to the air outlet of the main air duct.

[0020] If the distance between the air guide and the flow divider is less than 15mm, it indicates that the gap between the air guide and the flow divider is too narrow. During the process of the air guide introducing airflow into the upper air duct, because the width of the upper air duct is less than the width of the main air duct, some airflow returns and forms a backflow at the connection between the flow divider and the air guide. Because the distance between the air guide and the flow divider is too small, the backflow airflow cannot pass through the gap between the air guide and the flow divider, thus forming a vortex between the air guide and the flow divider.

[0021] If the distance between the air guide and the flow divider is greater than 30mm, it means that the gap between the air guide and the flow divider is too wide. This will result in an excessively large distance between the air guide and the flow divider, making the airflow leaving the air guide susceptible to the influence of the return airflow, which will create airflow obstruction near the air guide and thus increase the airflow loss.

[0022] By taking all factors into consideration, a preset gap of 15mm to 30mm is designed to ensure good airflow in the upper duct when the lower duct is closed. This ensures that the airflow is not turbulent between the guide and the splitter due to a small gap, nor is it too large to affect the control of airflow loss. As such, this design reduces the formation of turbulence between the guide and the splitter, thus reducing breathing noise, while ensuring the smoothness and stability of the airflow into the upper duct, thereby improving the user experience.

[0023] In one possible implementation, 18mm ≤ e ≤ 24mm.

[0024] The distance between the air guide and the air divider is within the range of 18mm to 24mm. This reasonable distance allows for optimal airflow within the duct. On one hand, it ensures the air guide effectively closes the lower duct, connecting the upper duct to the main duct's outlet and precisely guiding airflow towards the upper duct. On the other hand, it balances the interaction between the divided airflow and the airflow guided towards the upper duct, preventing airflow obstruction due to excessive distance or excessive interference due to excessive distance. This results in stable and smooth airflow, improving the overall performance of the air conditioner.

[0025] In one possible implementation, e = 20 mm.

[0026] Therefore, the distance between the air guide and the flow divider is 20mm, which ensures that the diverted airflow enters the gap between the air guide and the flow divider as much as possible, reducing the turbulence outside the gap. This effectively avoids vortex fluctuations at the connection between the upper air duct and the air guide, thereby eliminating breathing noise and improving the user experience.

[0027] In one possible implementation, when the air guide is in the first position, the minimum distance between the air guide and the second surface is b, and a≥b, b≥c.

[0028] Since a≥b and b≥c, the spatial arrangement between the air guide and the second surface can be ensured to be relatively reasonable. This prevents significant fluctuations in airflow due to sudden changes in space as the airflow moves from the main duct to the upper duct. For example, if b is too small, the airflow will be significantly obstructed, resulting in reduced airflow; if b is too large, it may cause vortices to form in that area, also affecting the stability of airflow. A reasonable b value ensures that the airflow can pass smoothly through the area between the air guide and the volute, thus guaranteeing stable airflow.

[0029] In one possible implementation, c ≥ 25 mm.

[0030] When c ≥ 25mm, the upper air duct has a relatively spacious area, allowing airflow to pass through smoothly and reducing airflow obstruction caused by an overly narrow upper air duct, thus ensuring stable airflow. For example, if the upper air duct is too narrow, the airflow will encounter greater resistance when passing through, resulting in reduced airflow. A suitable c value can avoid this situation and ensure that the air conditioner can output a relatively stable airflow.

[0031] In one possible implementation, the air guide has an air guiding surface, which is a plane.

[0032] Because of its relatively simple planar structure, it obstructs airflow less, allowing airflow to pass through the air guide more smoothly, thus ensuring a larger air volume.

[0033] In one possible implementation, the angle between the air guide surface and the flow divider is α, where 110°≤α≤120°.

[0034] By taking all factors into consideration, the angle between the air guide surface and the flow divider is made between 110° and 120°. This ensures a smooth transition of airflow between the air guide surface and the flow divider, as well as a smooth transition of airflow between the outlet side of the fan and the air guide surface, thus reducing airflow loss.

[0035] In one possible implementation, α = 116°.

[0036] Therefore, when the angle between the air guide surface and the splitter is within a certain reasonable range, the airflow from the splitter surface can be prevented or reduced from directly "colliding" with the splitter, thereby reducing wind loss and energy loss. α = 116° is the preferred angle value, which allows the airflow to pass more smoothly through the area between the air guide surface and the splitter, thereby increasing the air volume and reducing energy consumption.

[0037] In one possible implementation, when the air guide is in the first position, the minimum distance between the air guide and the main air duct is m, where 0 ≤ m ≤ 3 mm.

[0038] Therefore, the smaller minimum distance between the air guide and the main air duct can effectively reduce airflow leakage from the gap between the air guide and the main air duct, thereby ensuring that more airflow flows towards the upwind duct along the designed path and reducing airflow loss.

[0039] In one possible implementation, the housing further includes:

[0040] A first air guide plate is rotatably disposed at the upper air outlet to open or close the upper air outlet.

[0041] The second air guide plate is rotatably disposed at the lower air outlet to open or close the lower air outlet.

[0042] As can be seen, by setting the first and second air guide plates, the opening and closing of the upper and lower air outlets can be flexibly controlled. This allows the upper and / or lower air outlets to be closed when not in use, maintaining the product's aesthetics and preventing dust and impurities from entering the casing through the upper and / or lower air outlets when they are not in use, thus extending the product's service life.

[0043] Compared with the prior art, the beneficial effects of this application are as follows:

[0044] Therefore, when the air guide is in the first position, the preset gap is between 15mm and 30mm. This reasonable distance range ensures that the airflow in the upper air duct is good when the lower air duct is closed. It will not cause vortices to form between the air guide and the splitter due to the distance being too small, nor will it affect the control of air volume loss due to the distance being too large. It can be seen that in the upward air outlet state, it can reduce the formation of vortices between the air guide and the splitter to generate breathing noise, and ensure the smoothness and stability of the airflow in the upper air duct, thus improving the user experience. Attached Figure Description

[0045] 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.

[0046] Figure 1 This is a first-view structural schematic diagram of the wall-mounted air conditioner indoor unit 100 provided in the embodiments of this application;

[0047] Figure 2 This is a top view of the wall-mounted air conditioner indoor unit provided in the embodiment of this application;

[0048] Figure 3 yes Figure 1 Cross-sectional view at point BB;

[0049] Figure 4 yes Figure 1 Cross-sectional view at point CC;

[0050] Figure 5 This is an exploded view of the housing and air intake grille provided in the embodiments of this application;

[0051] Figure 6 This is a partial exploded view of the indoor unit of the wall-mounted air conditioner provided in the embodiments of this application;

[0052] Figure 7 yes Figure 2 Cross-sectional view at point DD (air guide in the open position);

[0053] Figure 8 yes Figure 2 Cross-sectional view at point DD (air guide component in the first position);

[0054] Figure 9 yes Figure 2 Cross-sectional view at point DD (air guide at the flow splitting position);

[0055] Figure 10 yes Figure 2 Cross-sectional view at point DD (air guide component is in the second position);

[0056] Figure 11 yes Figure 8 A magnified schematic diagram of a portion at point A in the middle;

[0057] Figure 12 This is a schematic diagram of a wind guide provided in an embodiment of this application;

[0058] Figure 13 This is another structural schematic diagram of the air guide provided in the embodiments of this application;

[0059] Figure 14 This is a structural schematic diagram of the wall-mounted air conditioner indoor unit from a second perspective, provided in an embodiment of this application.

[0060] Figure 15 This is an exploded view of the first and second air guide plates provided in the embodiments of this application.

[0061] Explanation of reference numerals in the attached figures:

[0062] 100-Wall-mounted air conditioner indoor unit; 110-Casing; 111-Casing air inlet; 112-Upper air outlet; 113-Lower air outlet; 114-Air inlet grille; 120-Heat exchanger; 130-Fan; 140-Bifurcation component; 150-Volume; 151-Heat exchange air duct; 152-Front volute tongue; 1521-First surface; 1522-Second surface; 1523-Volume throat surface; 161-Main air duct component; 1611-Main air duct; 162-Upper air duct component; 1621-Upper air duct; 163-Lower air duct component; 1631-Lower air duct; 164-Air guide component; 1641-Air guide surface; 171-First air guide plate; 172-Second air guide plate. Detailed Implementation

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (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, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0068] As described in the background section, when the indoor unit of a wall-mounted air conditioner is in the upward air outlet state, that is, the air guide closes the lower air duct and guides the airflow to the upper air duct. Since the width of the upper air duct is less than the minimum width of the duct throat, a splitting phenomenon will occur when the airflow enters the upper air duct. Although most of the airflow can be smoothly discharged through the upper air outlet, some airflow will still flow in the opposite direction. This part of the reverse-flowing airflow interferes with the airflow that subsequently enters the upper air duct, which will generate vortex fluctuations at the connection between the upper air duct and the air guide, thereby producing a breathing noise, which in turn affects the user's experience.

[0069] Based on this, this application provides a wall-mounted air conditioner indoor unit that can reduce the risk of breathing noise when the air is in the upward air outlet state, thereby improving the user experience.

[0070] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0071] See Figure 1 and Figure 2 This application provides a wall-mounted air conditioner indoor unit 100, which includes a housing 110 and houses various functional components of the wall-mounted air conditioner indoor unit 100.

[0072] The wall-mounted air conditioner indoor unit 100 in this embodiment is also commonly referred to as a split-type air conditioner or wall-mounted unit. It is a type of air conditioner that is mounted on an indoor wall. It is currently the most common and widely used type of air conditioner in homes and small commercial spaces. It has advantages such as high cost performance, space saving, flexibility and convenience, quiet operation and energy saving.

[0073] Optional, see Figure 3 and Figure 4 The housing 110 is provided with a housing air inlet 111, an upper air outlet 112 and a lower air outlet 113. The housing air inlet 111 is located at the top front side of the housing 110, and at least a portion of the lower air outlet 113 is located at the bottom of the housing 110.

[0074] The air inlet 111 is used to guide airflow from the external environment into the interior of the housing 110, and to allow the airflow to flow into the room through the upper air outlet 112 and / or the lower air outlet 113.

[0075] Optional, see Figure 5An air inlet grille 114 can be installed at the air inlet 111 of the casing to block foreign objects and dust from entering the interior of the casing 110, and to make the appearance of the wall-mounted air conditioner indoor unit 100 neater and more beautiful.

[0076] Optional, see Figure 3 and Figure 4 A heat exchanger 120 is provided inside the casing 110, which is used to exchange heat with the airflow flowing into the casing 110.

[0077] Heat exchanger 120 is a heat exchanger that utilizes the characteristic of liquid low-temperature refrigerant easily evaporating under low pressure. By absorbing heat from the medium being cooled, it lowers the temperature of the surrounding air, thereby achieving a cooling effect. The cooled air after passing through heat exchanger 120 is then returned to the room through an air supply system, providing a comfortable indoor environment. Especially in the hot summer, the cooling effect of heat exchanger 120 can significantly reduce indoor temperature and improve people's living comfort. Optionally, heat exchanger 120 can be a finned heat exchanger, a multi-stage evaporator, etc.

[0078] Optional, see Figure 3 and Figure 4 The casing 110 is also equipped with a fan 130. The fan 130 is used to introduce airflow into the casing 110 through the casing air inlet 111, and after heat exchange by the heat exchanger 120, it is sent into the room through the upper air outlet 112 and / or the lower air outlet 113.

[0079] The fan 130 can introduce airflow into the interior of the casing 110, so that the airflow can be heat-exchanged by the heat exchanger 120, and then the heat-exchanged airflow can be sent into the room through the upper air outlet 112 and / or the lower air outlet 113 under the action of the fan 130.

[0080] Among them, the fan 130 can be a cross-flow fan 130, a centrifugal fan 130, etc.

[0081] Optional, see Figure 3 , Figure 4 and Figure 6 Inside the housing 110, there is also a flow divider 140. The flow divider 140 is located on the front side of the fan 130 and can make the airflow blown to the flow divider 140 flow upward or downward.

[0082] The diverter 140 can be a front panel or a plate-like structure located inside the front panel.

[0083] By providing the diverter 140, the airflow blown onto the diverter 140 can be diverted, thereby allowing the diverter 140 to flow upward or downward.

[0084] Optional, see also Figure 7The housing 110 is also provided with a volute 150. The volute 150 is located inside the housing 110 and a heat exchange air duct 151 is formed inside the volute 150. The air inlet end of the heat exchange air duct 151 is connected to the air inlet 111 of the housing, and the air outlet end of the heat exchange air duct 151 is directed toward the splitter 140.

[0085] Therefore, by setting the volute 150, the airflow entering through the air inlet 111 of the casing can be heated in winter or cooled in summer to form air conditioning air for regulating the indoor temperature.

[0086] Optional, see Figure 7 The volute 150 includes a front volute tongue 152, which includes a first surface 1521, a second surface 1522, and a volute throat surface 1523. The first surface 1521 is close to the fan 130. The second surface 1522 gradually slopes upward from the rear side of the housing 110 to the front side. The volute throat surface 1523 connects the first surface 1521 and the second surface 1522.

[0087] As a result, the airflow inside the volute 150 is heated or cooled by the heat exchange duct 151 and then guided upward through the first surface 1521, the volute throat surface 1523 and the second surface 1522 to the air outlet 112 and / or the air outlet 113.

[0088] Alternatively, the fan 130 can be installed in the heat exchange channel. Thus, under the rotation of the fan 130, the airflow in the heat exchange duct 151 can be driven outward along the first surface 1521, the volute surface 1523 and the second surface 1522 in sequence, and finally flow into the indoor space through the upper air outlet 112 and / or the lower air outlet 113.

[0089] Optional, see Figure 6 and Figure 7The housing 110 also includes a main air duct 161, an upper air duct 162, a lower air duct 163, and an air guide 164. The main air duct 161 is located below the front volute 152 and extends towards the lower air outlet 113. The main air duct 161 forms a main air duct 1611 with the first surface 1521 and the second surface 1522. The air inlet of the main air duct 1611 is connected to the air outlet side of the fan 130. The upper air duct 162 is located above the front volute 152 and extends towards the upper air outlet 112. Along the front-rear direction of the housing 110, the upper air duct 162 and the diverter 140 form a connection with the upper air outlet. The upper air duct 1621 is connected to the air outlet 112. The upper air duct 1621 is configured to guide the airflow entering the upper air duct 1621 to be delivered outward through the upper air outlet 112. The lower air duct component 163 is located below the front volute 152 and extends toward the lower air outlet 113. Along the front and rear direction of the housing 110, the lower air duct component 163 and the diverter component 140 form a lower air duct 1631 that is connected to the lower air outlet 113. The lower air duct 1631 is configured to guide the airflow entering the lower air duct 1631 to be delivered outward through the lower air outlet 113. The air guide component 164 is rotatably disposed in the main air duct 1611.

[0090] The air guide component 164 can switch between an open position, a first position, a second position, and a diversion position; for example... Figure 7 As shown, when the air guide 164 is in the open position, both the upper air duct 1621 and the lower air duct 1631 are connected to the air outlet of the main air duct 1611; Figure 8 As shown, when the air guide 164 is in the first position, the air guide 164 can block at least part of the lower air duct 1631, so that the upper air duct 1621 is connected to the air outlet of the main air duct 1611; as Figure 10 As shown, when the air guide 164 is in the second position, the air guide 164 can block at least part of the upper air duct 1621, so that the lower air duct 1631 is connected to the air outlet of the main air duct 1611; as Figure 9 As shown, when the air guide 164 is in the diversion position, the air guide 164 is configured to divert the airflow sent out by the main air duct 1611 so that the diverted airflow enters the upper air duct 1621 and the lower air duct 1631 respectively.

[0091] When the top air outlet mode needs to be activated, first control the air guide 164 to rotate to the first position. At this time, the main air duct 1611 is connected to the upper air duct 1621. In this way, the air guide 164 can guide the airflow sent from the main air duct 1611 into the upper air duct 1621, and finally introduce it into the room through the top air outlet 112. Especially when cooling in summer, according to the physical principle of "hot air rises and cold air sinks", the upward-blown cold airflow will naturally diffuse from the top to the bottom, forming a complete airflow circulation from top to bottom, which can quickly reduce the temperature of the entire room and avoid the problem of slow cooling in local areas.

[0092] When the down-ventilation mode needs to be activated, first control the air guide 164 to rotate to the second position. At this time, the main air duct 1611 and the down-ventilation duct 1631 are connected. In this way, the air guide 164 can guide the airflow sent from the main air duct 1611 into the down-ventilation duct 1631, and finally introduce it into the room through the down-ventilation outlet 113. Especially when heating is needed in winter, hot air tends to accumulate upwards. The down-ventilation mode can directly deliver hot air to the ground and the height of human activity, achieving the effect of warm feet and a warm body.

[0093] When an up-and-down airflow mode is required, the user can choose to prioritize the down-flow mode (e.g., placing the air guide 164 in the diversion position) or prioritize the up-flow mode (e.g., placing the air guide 164 in the open position) to meet different user needs.

[0094] It should be noted that the air guide 164 can achieve both upward and downward airflow modes in both the diversion and open positions. Optionally, in the diversion position, the air guide 164 can achieve an airflow pattern with upward airflow as the primary mode and downward airflow as the secondary mode; in the open position, it can achieve an airflow pattern with outflow as the primary mode and upward airflow as the secondary mode. That is, when the air guide 164 is in the diversion position, it enables the wall-mounted air conditioner indoor unit 100 and above to have an airflow pattern with upward airflow as the primary mode and downward airflow as the secondary mode, accelerating the diffusion of cold air. When the air guide 164 is in the open position, it enables the wall-mounted air conditioner indoor unit 100 and below to have an airflow pattern with upward airflow as the primary mode and upward airflow as the secondary mode, promoting the circulation of hot air without the need for frequent mode switching. Of course, the air guide 164 can achieve an airflow pattern with upward airflow as the primary mode and downward airflow as the secondary mode in the open position, and an airflow pattern with outflow as the primary mode and upward airflow as the secondary mode in the diversion position.

[0095] Optional, see Figure 8 and Figure 11 The minimum distance between the upper air duct 162 and the diverter 140 is c, and c < a. The minimum distance between the main air duct 161 and the volute surface 1523 is a. When the air guide 164 is in the first position, the distance between the air guide 164 and the diverter 140 along the front and rear direction of the housing 110 is e, 15mm ≤ e ≤ 30mm. The first position is configured such that the air guide 164 can close the lower air duct 1631 so that the upper air duct 1621 and the air outlet of the main air duct 1611 are connected.

[0096] Among them, the front and rear direction of the casing 110 refers to Figure 8 The direction indicated by the x-arrow.

[0097] Since the minimum distance between the upper air duct 162 and the diverter 140 is c, and c < a, and the minimum distance between the main air duct 161 and the volute throat surface 1523 is a, the airflow is more likely to be diverted after entering the upper air duct 1621. Based on this, when the air guide 164 is in the first position, the distance between the air guide 164 and the diverter 140 along the front and rear direction of the casing 110 is e, 15mm ≤ e ≤ 30mm.

[0098] If the distance between the air guide 164 and the flow divider 140 is less than 15mm, it indicates that the gap between the air guide 164 and the flow divider 140 is too narrow. During the process of the air guide surface 1641 introducing airflow into the upper air duct 1621, because the width of the upper air duct 1621 is less than the width of the main air duct 1611, some airflow returns and forms a backflow airflow at the connection between the flow divider 140 and the air guide 164. Because the distance between the air guide 164 and the flow divider 140 is too small, the backflow airflow cannot pass through the gap between the air guide 164 and the flow divider 140, thus forming a vortex between the air guide 164 and the flow divider 140.

[0099] If the distance between the air guide 164 and the flow divider 140 is greater than 30mm, it indicates that the gap between the air guide 164 and the flow divider 140 is too wide. This will result in an excessively large distance between the air guide 164 and the flow divider 140, making the airflow leaving the air guide 164 susceptible to the influence of the return airflow, forming an airflow obstruction near the air guide 164, thereby increasing the airflow loss.

[0100] Through comprehensive consideration, the preset gap is set between 15mm and 30mm. This reasonable distance range ensures that the airflow of the upper air duct 1621 is good when the lower air duct 1631 is closed. It will not affect the air volume of the upper air duct 1621 due to the distance being too small, nor will it affect the control of air volume loss due to the distance being too large. This further ensures the stable flow of air and helps to reduce noise.

[0101] For example, the distance between the air guide 164 and the flow divider 140 can be 15mm, 17mm, 19mm, 20mm, 22mm, 24mm, 25mm, 27mm, 29mm, 30mm, etc. Those skilled in the art should know that the above are just examples of the distance between the air guide 164 and the flow divider 140, and should not be construed as limiting the specific value of the distance between the air guide 164 and the flow divider 140.

[0102] In some possible embodiments, 18mm ≤ e ≤ 24mm.

[0103] If the distance between the air guide 164 and the flow divider 140 is less than 18mm, the airflow cannot be fully diverted into the gap between them. Some airflow will form turbulence outside the gap. This turbulence interacts with the airflow guided by the air guide 164, still generating vortex breathing noise. However, by controlling the distance between the air guide 164 and the flow divider 140 to 18mm or more, it can be ensured that as much of the diverted airflow as possible enters the gap, reducing turbulence outside the gap. This effectively prevents vortex breathing, reduces noise, and improves the user experience.

[0104] When the distance between the air guide 164 and the diverter 140 is greater than 24mm, the excessive distance causes the diverted airflow to significantly interfere with the airflow guided by the air guide 164 to the upper air duct 1621. This interference alters the direction and speed of the airflow guided to the upper air duct 1621, preventing some airflow from being smoothly discharged through the upper air outlet 112, thus increasing airflow loss. Controlling the distance between the air guide 164 and the diverter 140 to 24mm or less reduces the interference of the diverted airflow with the airflow guided to the upper air duct 1621, ensuring smoother airflow discharge through the upper air outlet 112, reducing airflow loss, and improving the air conditioning's delivery efficiency and cooling / heating performance.

[0105] Therefore, the distance between the air guide 164 and the diverter 140 is within the range of 18mm to 24mm. This distance is reasonable and allows the airflow within the duct to reach its optimal state. On one hand, it ensures that the air guide 164 effectively closes the lower air duct 1631, connecting the upper air duct 1621 with the air outlet of the main air duct 1611, and precisely guiding the airflow towards the upper air duct 1621. On the other hand, it allows the interaction between the diverted airflow and the airflow guided towards the upper air duct 1621 to reach a balanced state, preventing airflow obstruction due to excessive distance or excessive interference due to excessive distance. This achieves stable and smooth airflow, improving the overall performance of the air conditioner.

[0106] In some possible embodiments, e = 20 mm.

[0107] Therefore, the distance between the air guide 164 and the flow divider 140 is 20mm, which ensures that the diverted airflow enters the gap between the air guide 164 and the flow divider 140 as much as possible, reducing the turbulence phenomenon of airflow outside the gap, thereby effectively avoiding vortex fluctuations at the connection between the upper air duct 1621 and the air guide 164, thereby eliminating breathing noise and improving the user experience.

[0108] Furthermore, the diverted airflow has less interference with the airflow guided by the upward air duct 1621, ensuring that the airflow can be discharged more smoothly through the upper air outlet 112, reducing air volume loss and improving the air supply efficiency and cooling and heating effect of the air conditioner.

[0109] When the distance between the air guide 164 and the flow divider 140 is 20mm, the airflow in the duct can reach the optimal state, achieving stable and smooth airflow and optimizing the overall performance of the air conditioner.

[0110] In some possible embodiments, see Figure 8 When the air guide 164 is in the first position, the minimum distance between the air guide 164 and the second surface 1522 is b, and a≥b, b≥c.

[0111] Since a≥b and b≥c, the spatial arrangement between the air guide 164 and the second surface 1522 is relatively reasonable, ensuring that the airflow will not fluctuate significantly due to sudden changes in space as it flows from the main air duct 1611 to the upper air duct 1621. For example, if b is too small, the airflow will be significantly obstructed, resulting in a decrease in airflow; if b is too large, it may cause vortices to form in the area, also affecting the stability of airflow. A reasonable b value ensures that the airflow can pass smoothly through the area between the air guide 164 and the front volute, thus ensuring stable airflow.

[0112] When b ≥ c, the airflow entering the upper air duct 1621 from the area between the air guide 164 and the second surface 1522 will not experience significant resistance due to the sudden narrowing of the channel, thus maintaining a relatively smooth flow. Simultaneously, b ≤ a prevents excessive space in this area from causing airflow turbulence, further reducing airflow resistance and allowing the airflow to pass through this area with lower energy loss, thereby improving the energy efficiency of the air conditioner.

[0113] In some possible embodiments, c ≥ 25 mm.

[0114] Since c is the minimum width of the upper air duct 1621, when c ≥ 25mm, the space of the upper air duct 1621 is relatively spacious, allowing airflow to pass through it more smoothly. This reduces airflow obstruction caused by an overly narrow upper air duct 1621, thus ensuring stable airflow. For example, if the upper air duct 1621 is too narrow, the airflow will encounter greater resistance, resulting in reduced airflow. A suitable c value can prevent this from happening, ensuring that the air conditioner can output a relatively stable airflow.

[0115] Furthermore, when c≥25mm, it helps to improve the air volume delivery efficiency, enabling the wall-mounted air conditioner indoor unit 100 to deliver more airflow per unit time, thereby better meeting the indoor cooling or heating needs.

[0116] For example, when the indoor unit 100 of the wall-mounted air conditioner is in the upward air outlet state, the larger c value allows the upward air duct 1621 to guide more cold air upward. After the cold air diffuses near the ceiling, it will naturally sink due to density differences, thereby driving the air in the whole room to form natural convection. This natural convection can make the indoor temperature more uniform and avoid local overcooling or overheating.

[0117] In some possible embodiments, see Figure 12 The air guide component 164 has an air guide surface 1641, which is a plane.

[0118] Among them, the air guide surface 1641 is the surface of the air guide element 164 used to guide the airflow towards the upper air duct 1621 when it is in the first position.

[0119] Because the planar structure is relatively simple and has little obstruction to airflow, it allows airflow to pass through the air guide 164 more smoothly, thus ensuring a larger air volume.

[0120] In addition, the planar air guide surface 1641 does not cause complex directional changes in airflow during the flow process like a curved surface, thereby reducing the possibility of airflow turbulence and reducing the noise caused by airflow turbulence.

[0121] Of course, in some other possible embodiments, see Figure 13 The air guide surface 1641 can also be a concave arc surface.

[0122] In some possible embodiments, see Figure 11 The included angle between the air guide surface 1641 and the flow divider 140 is α, where 110°≤α≤120°.

[0123] If the angle between the air guide surface 1641 and the flow divider 140 is less than 110°, on the one hand, the angle between the air guide surface 1641 and the flow divider 140 is close to a right angle. When the airflow reaches the air guide surface 1641, a strong collision will occur, thereby increasing wind loss and reducing the overall air volume. On the other hand, a small angle may cause the airflow path between the air guide surface 1641 and the flow divider 140 to be too tortuous, which can easily cause airflow turbulence, generate eddies, and increase airflow resistance and energy loss.

[0124] If the angle between the air guide surface 1641 and the flow divider 140 is greater than 120°, the angle between the air guide surface on the air outlet side of the fan 130 will change abruptly, which will easily cause airflow turbulence and eddies at the air inlet end of the air guide surface 1641.

[0125] Based on this, through comprehensive consideration, the angle between the air guide surface 1641 and the flow divider 140 is between 110° and 120°, which can ensure that the airflow transitions smoothly between the air guide surface 1641 and the flow divider 140, and also ensure that the airflow transitions smoothly between the air outlet side of the fan 130 and the air guide surface 1641, thereby reducing air volume loss.

[0126] For example, the included angle between the air guide surface 1641 and the flow divider 140 can be 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 120°, etc. Those skilled in the art should know that the above are just examples of the included angle between the air guide surface 1641 and the flow divider 140, and should not be construed as limiting the specific value of the included angle between the air guide surface 1641 and the flow divider 140.

[0127] In some possible embodiments, α = 116°.

[0128] Therefore, when the angle between the air guide surface 1641 and the diverter 140 is within a certain reasonable range, the airflow from the diverter surface can be prevented or reduced from directly "colliding" with the diverter 140, thereby reducing wind loss and energy loss. α = 116° is the preferred angle value, which allows the airflow to pass more smoothly through the area between the air guide surface 1641 and the diverter 140, thereby increasing the air volume and reducing energy consumption.

[0129] In some possible embodiments, see Figure 11 When the air guide 164 is in the first position, the minimum distance between the air guide 164 and the main air duct 161 is m, 0≤m≤3mm.

[0130] Therefore, the minimum distance between the smaller air guide 164 and the main air duct 161 can effectively reduce airflow leakage from the gap between the air guide 164 and the main air duct 161, thereby ensuring that more airflow flows towards the upper air duct 1621 according to the design path and reducing airflow loss.

[0131] For example, the minimum distance between the air guide 164 and the main air duct 161 can be 0mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc. Those skilled in the art should know that the above are just examples of the minimum distance between the air guide 164 and the main air duct 161, and should not be construed as a limitation on the specific value of the minimum distance between the air guide 164 and the main air duct 161.

[0132] In some possible embodiments, see Figure 14 and Figure 15The housing 110 is also provided with a first air guide plate 171 and a second air guide plate 172. The first air guide plate 171 is rotatably disposed at the upper air outlet 112 to open or close the upper air outlet 112; the second air guide plate 172 is rotatably disposed at the lower air outlet 113 to open or close the lower air outlet 113.

[0133] Since the first air guide plate 171 is rotatably disposed at the upper air outlet 112 and the second air guide plate 172 is rotatably disposed at the lower air outlet 113, when the air guide component 164 is in the first position, the second air guide plate 172 can be rotated to close the lower air outlet 113 and the first air guide plate 171 can be rotated to open the upper air outlet 112 to achieve an upper air outlet state. When the air guide component 164 is in the second position, the first air guide plate 171 can be rotated to close the upper air outlet 112 and the second air guide plate 172 can be rotated to open the lower air outlet 113 to achieve a lower air outlet state. When the air guide component 164 is in the open position or the diversion position, the first air guide plate 171 can be rotated to open the upper air outlet 112 and the second air guide plate 172 can be rotated to open the lower air outlet 113 to achieve an upper and lower air outlet state.

[0134] As can be seen, by setting the first air guide plate 171 and the second air guide plate 172, the opening or closing of the upper air outlet 112 and the lower air outlet 113 can be flexibly controlled. Thus, when the upper air outlet 112 and / or the lower air outlet 113 are not in use, they can be closed, which can maintain the aesthetics of the product and prevent dust, impurities and other contaminants from entering the housing 110 through the upper air outlet 112 and / or the lower air outlet 113 when they are not in use, thereby extending the service life of the product.

[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 wall-mounted air conditioner indoor unit (100), characterized in that, include: A housing (110) is provided with a housing air inlet (111), an upper air outlet (112), and a lower air outlet (113). The housing air inlet (111) is located at the top front side of the housing (110), and at least a portion of the lower air outlet (113) is located at the bottom of the housing (110). The housing (110) contains: A heat exchanger (120) is used to exchange heat with the airflow flowing into the housing (110); A fan (130) is used to introduce airflow into the housing (110) through the housing air inlet (111), and after heat exchange by the heat exchanger (120), it is sent into the room through the upper air outlet (112) and / or the lower air outlet (113); A flow divider (140) is disposed on the front side of the fan (130) and can cause the airflow blown to the flow divider (140) to flow upward or downward. A volute (150) is disposed within the housing (110). A heat exchange duct (151) is formed within the volute (150). The air inlet of the heat exchange duct (151) is connected to the air inlet (111) of the housing. The air outlet of the heat exchange duct (151) is directed towards the distributor (140). The volute (150) includes: Anterior cochlear tongue (152), the anterior cochlear tongue (152) comprising: The first side (1521) is close to the fan; The second surface (1522) gradually slopes upward from the rear side of the housing (110) towards the front side; A cochlear throat surface (1523) is connected between the first surface (1521) and the second surface (1522); A main air duct component (161) is located below the front volute tongue (152) and extends toward the lower air outlet (113). The main air duct component (161) forms a main air duct (1611) with the first surface (1521) and the second surface (1522). The air inlet end of the main air duct (1611) is connected to the air outlet side of the fan (130). The minimum distance between the main air duct component (161) and the volute throat surface (1523) is a. An upper air duct (162) is located above the front volute (152) and extends toward the upper air outlet (112) along the front-rear direction of the housing (110). The upper air duct (162) and the diverter (140) form an upper air duct (1621) communicating with the upper air outlet (112). The upper air duct (1621) is configured to guide the airflow entering the upper air duct (1621) to be delivered outward through the upper air outlet (112). The minimum distance between the upper air duct (162) and the diverter (140) is c, and c < a. A lower air duct (163) is located below the front volute (152) and extends toward the lower air outlet (113) along the front-rear direction of the housing (110). The lower air duct (163) and the diverter (140) form a lower air duct (1631) communicating with the lower air outlet (113). The lower air duct (1631) is configured to guide the airflow entering the lower air duct (1631) to be delivered outward through the lower air outlet (113). An air guide (164) is rotatably disposed within the main air duct (1611); When the air guide (164) is in the first position, the distance between the air guide (164) and the diverter (140) along the front-rear direction of the housing (110) is e, 15mm≤e≤30mm. The first position is configured such that the air guide (164) can block at least part of the lower air duct (1631) so that the upper air duct (1621) is connected to the air outlet of the main air duct (1611).

2. The wall-mounted air conditioner indoor unit (100) according to claim 1, characterized in that, 18mm≤e≤24mm.

3. The wall-mounted air conditioner indoor unit (100) according to claim 2, characterized in that, e = 20mm.

4. The wall-mounted air conditioner indoor unit (100) according to claim 1, characterized in that, When the air guide (164) is in the first position, the minimum distance between the air guide (164) and the second surface (1522) is b, and a≥b, b≥c.

5. The wall-mounted air conditioner indoor unit (100) according to claim 4, characterized in that, c≥25mm.

6. The wall-mounted air conditioner indoor unit (100) according to claim 1, characterized in that, The air guide (164) has an air guide surface (1641), which is a plane.

7. The wall-mounted air conditioner indoor unit (100) according to claim 6, characterized in that, The included angle between the air guide surface (1641) and the flow divider (140) is α, where 110°≤α≤120°.

8. The wall-mounted air conditioner indoor unit (100) according to claim 7, characterized in that, α＝116°。 9. The wall-mounted air conditioner indoor unit (100) according to claim 1, characterized in that, When the air guide (164) is in the first position, the minimum distance between the air guide (164) and the main air duct (161) is m, 0≤m≤3mm.

10. The wall-mounted air conditioner indoor unit (100) according to claim 1, characterized in that, The housing (110) also contains: The first air guide plate (171) is rotatably disposed at the upper air outlet (112) to open or close the upper air outlet (112); The second air guide plate (172) is rotatably disposed at the lower air outlet (113) to open or close the lower air outlet (113).

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