Air conditioner

Abstract

This utility model discloses an air conditioner, comprising: a housing, with an air inlet on the upper side and an air outlet on the lower front side of the housing, and a receiving cavity formed inside the housing; a heat exchanger; a duct component; and a fan, the fan being disposed inside the housing and at least partially located within the duct component; the duct component comprising: a front volute, disposed on the rear side of the receiving cavity and partially extending circumferentially along the fan; and a rear volute, disposed on the front side of the receiving cavity and partially extending circumferentially along the fan, the front and rear volutes defining an air outlet duct; a guide section is provided at one end of the rear volute adjacent to the heat exchanger, and a guide surface is provided on the side of the guide section facing the fan, at least a portion of the guide surface being recessed away from the fan. In this embodiment of the air conditioner, the end of the rear volute adjacent to the heat exchanger is designed with a concentric recess, which allows for the guidance of gas through the recessed guide surface, facilitating faster gas flow into the air outlet duct and thus increasing the airflow velocity and air volume of the air conditioner.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air conditioner. Background Technology

[0002] Air conditioners in related technologies typically include a heat exchanger, ductwork, and a fan. The heat exchanger, ductwork, and fan are housed inside the casing, and the fan can be housed inside the ductwork. The fan can drive indoor air into the casing, and after exchanging heat with the heat exchanger, the air flows through the ductwork to the air outlet and is discharged into the room through the air outlet to achieve cooling or heating of the room.

[0003] Furthermore, the air duct components typically include a front volute and a rear volute, which together define the air outlet duct. The airflow generated by the fan can flow along the air outlet duct, making the airflow inside the air conditioner more orderly and the heat exchange efficiency higher.

[0004] However, due to the unreasonable structural design of the rear volute tongue near the heat exchanger end in the related technology, such as its near-straight shape, this part has a poor guiding effect on airflow, resulting in a slower airflow velocity, a smaller air volume of the air conditioner, and a poorer user experience. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide an air conditioner in which one end of the rear volute adjacent to the heat exchanger is constructed with a concentric recessed design. This recessed guide surface can be used to guide the gas flow, which helps to accelerate the gas flow into the air outlet duct, thereby increasing the airflow velocity and thus increasing the air volume of the air conditioner.

[0006] To achieve the above objectives, an air conditioner is provided according to an embodiment of the present invention, comprising: a housing, the housing being fixed to a wall, an air inlet being provided on the upper side of the housing and an air outlet being provided on the lower front side of the housing, and a cavity being formed inside the housing; a heat exchanger, the heat exchanger being disposed inside the housing and adjacent to the air inlet; a ductwork component, the ductwork component being disposed inside the housing and located on the side of the heat exchanger facing the air outlet, the ductwork component being constructed with an air outlet duct, the air outlet duct being connected to the air outlet; and a fan, the fan being disposed inside the housing and at least partially located inside the ductwork component, the fan driving indoor air from the housing... An air inlet enters the housing, and the indoor air flows into the room through the air duct and the air outlet after exchanging heat with the heat exchanger. The air duct includes a front volute, which is located on the front side of the receiving cavity and extends partially along the circumference of the fan; and a rear volute, which is located on the rear side of the receiving cavity and extends partially along the circumference of the fan. The front volute and the rear volute define the air outlet duct. The rear volute has a guide section at one end adjacent to the heat exchanger, and a guide surface on the side of the guide section facing the fan. At least a portion of the guide surface is recessed away from the fan.

[0007] The above technical solution has the following advantages or beneficial effects: by forming a "centripetal" concave design on the side of the rear volute facing the fan, the rear volute, which is concave towards the center away from the fan, can concentrate and guide the gas leaving the fan, and convert part of the kinetic energy of the gas into static pressure to guide the airflow, and then convert it back into dynamic pressure to form specific forced convection. This is beneficial to accelerate the gas flow into the air outlet duct, and can further accelerate the gas flow between the rear volute and the fan, and can increase the airflow velocity to increase the overall air volume of the air conditioner, resulting in a better user experience.

[0008] According to some embodiments of the present invention, the guide surface includes: a first straight guide surface, which is disposed at the end of the guide section away from the heat exchanger; and a second straight guide surface, which is disposed at the end of the guide section adjacent to the heat exchanger; wherein, from bottom to top along the vertical direction, both the first straight guide surface and the second straight guide surface are inclined toward the direction of the fan, and the angle between the first straight guide surface and the horizontal direction is different from the angle between the second straight guide surface and the horizontal direction.

[0009] The above technical solution has the following advantages or beneficial effects: it can use the first and second straight guide surfaces to concentrate and guide the air, and convert part of the kinetic energy of the air into static pressure to guide the airflow, and then convert it back into dynamic pressure to form specific forced convection, accelerating the airflow between the rear volute and the fan, thereby increasing the overall air volume of the air conditioner.

[0010] According to some embodiments of the present invention, along the circumferential direction of the fan, the size of the first straight guide surface is larger than the size of the second straight guide surface.

[0011] The above technical solution has the following advantages or beneficial effects: the contact area between air and the first straight guide surface can be large, the guide distance of the first straight guide surface to the air can be long, and the adhesion of air to the first straight guide surface can be enhanced, thereby improving the guide effect of the first straight guide surface to the airflow, so that air can flow into the air duct more smoothly, thereby increasing the air volume of the air conditioner.

[0012] According to some embodiments of the present invention, the guide surface further includes: a first arc-shaped guide surface, wherein the first arc-shaped guide surface is disposed between the first straight guide surface and the second straight guide surface, and the first straight guide surface and the second straight guide surface are respectively tangent to the first arc-shaped guide surface.

[0013] The above technical solution has the following advantages or beneficial effects: by adding a first arc-shaped guide surface, the transition at the connection between the first straight guide surface and the second straight guide surface can be smoother, and the airflow can flow more smoothly from the first straight guide surface through the first arc-shaped guide surface to the second straight guide surface. This not only avoids turbulence at the transition between the first straight guide surface and the second straight guide surface, but also enhances the wall adhesion effect of the airflow by utilizing the first arc-shaped guide surface, so as to guide the air more effectively and reduce the noise caused by air impact or sharp turning.

[0014] According to some embodiments of the present invention, the angle between the first straight guide surface and the horizontal direction is A, and the angle between the second straight guide surface and the horizontal direction is B; wherein, A and B satisfy: 50°≤A≤60°, and 0.65×A≤B≤0.8×A.

[0015] The above technical solution has the following advantages or beneficial effects: This arrangement avoids both an excessively small angle A between the first straight guide surface and the horizontal direction, thus ensuring a larger air volume and preventing turbulence and noise, and an excessively large angle A between the first straight guide surface and the horizontal direction, allowing the first straight guide surface to effectively guide the air, resulting in a more orderly airflow within the air outlet duct, thereby increasing the air volume at the air outlet and improving the overall ventilation efficiency of the air conditioner. Furthermore, this arrangement avoids an excessively small angle B between the second straight guide surface and the horizontal direction, ensuring smooth airflow through the air outlet duct to the air outlet, and an excessively large angle B between the second straight guide surface and the horizontal direction, allowing the second straight guide surface to effectively guide the air, resulting in an orderly airflow within the air outlet duct.

[0016] According to some embodiments of the present invention, the guide surface includes: a first straight guide surface, which is disposed at the end of the guide section away from the heat exchanger and extends from bottom to top in the vertical direction, and the first straight guide surface is inclined towards the fan; and a second arc-shaped guide surface, which is disposed at the end of the guide section adjacent to the heat exchanger, and the second arc-shaped guide surface is connected to and tangent to the first straight guide surface.

[0017] The above technical solution has the following advantages or beneficial effects: the second arc-shaped guide surface can better guide the airflow. This setting can make the length of the second arc-shaped guide surface longer, thereby improving the guiding effect of the guide surface on the airflow, and can more effectively reduce the turbulence or noise generated by the air at the guide surface, making the airflow smoother and the user experience better.

[0018] According to some embodiments of the present invention, the thickness of the guide section at one end facing the heat exchanger is W1, and the thickness of the guide section at the first straight guide surface is W2, where W1 and W2 satisfy: W1 < W2.

[0019] The above technical solution has the following advantages or beneficial effects: This arrangement facilitates the processing and demolding of the rear volute tongue. Furthermore, by reducing the thickness of the guide section at the end facing the heat exchanger, the gap between the end of the rear volute tongue and the rear fold of the heat exchanger can be increased, thus preventing vibrations during air conditioner operation or transportation from causing collisions and interference between the rear volute tongue and the heat exchanger. Additionally, the horizontal distance between the rear volute tongue and the rear fold of the heat exchanger can be larger, thereby reducing condensate dripping from the heat exchanger to the end of the rear volute tongue, which in turn reduces condensate entering the air duct components and prevents excessive condensate from being blown out through the air outlet.

[0020] According to some embodiments of the present invention, the guide surface is constructed as a third arc-shaped guide surface.

[0021] The above technical solution has the following advantages or beneficial effects: In other words, the entire guide surface in this embodiment can be constructed as an arc surface. Since air tends to flow along the arc surface, by constructing the guide surface as an arc surface, the airflow can better adhere to the arc surface. The guide surface can better concentrate and guide the air, and convert part of the kinetic energy of the air into static pressure to guide the airflow, and then convert it back into dynamic pressure to form specific forced convection, so as to accelerate the airflow between the rear volute and the fan, thereby increasing the air volume of the air conditioner.

[0022] According to some embodiments of this utility model, along the radial direction of the fan, the minimum distance between the front volute and the fan is T1, the maximum distance between the front volute and the fan is T2, the minimum distance between the rear volute and the fan is T3, and the outer diameter of the fan is D; wherein, T1, T2, T3 and D satisfy: 0.04×D≤T1≤0.065×D; 0.07×D≤T2≤0.1×D; 0.04×D≤T3≤0.065×D.

[0023] The above technical solution has the following advantages or beneficial effects: it can avoid the gap between the front or rear volute tongue and the fan being too small, so as to avoid collision and interference with the front or rear volute tongue during transportation or when the fan vibrates during operation. At the same time, it can avoid noise generated by airflow when the gap is too small. It can also avoid the gap between the front or rear volute tongue and the fan being too large, so as to reduce the airflow back through the front volute tongue and the fan. In addition, it can increase the airflow velocity between the rear volute tongue and the fan, so as to ensure that the air volume of the air conditioner can be larger.

[0024] According to some embodiments of the present invention, the rear volute tongue is provided with a plurality of reinforcing ribs on the side facing away from the fan, and the plurality of reinforcing ribs correspond at least to the guide section.

[0025] The above technical solution has the following advantages or beneficial effects: by constructing the guide section as a concentric concave setting, the thickness of the guide section will be reduced. By adding multiple reinforcing ribs, the structural strength of the guide section can be improved, thereby enhancing the deformation resistance of the rear volute tongue at the position of the guide section. On the one hand, it can prevent the rear volute tongue from deforming due to vibration during transportation, and on the other hand, it can prevent the rear volute tongue from deforming or vibrating during the process of guiding airflow. This is beneficial to improving the guiding effect of the rear volute tongue and can also prevent noise generated by the vibration of the rear volute tongue.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a cross-sectional view of an air conditioner according to an embodiment of the present utility model;

[0029] Figure 2 yes Figure 1 An enlarged schematic diagram of the structure at point A;

[0030] Figure 3A cross-sectional view of an air conditioner according to another embodiment of the present invention;

[0031] Figure 4 yes Figure 3 An enlarged schematic diagram of the structure at point B;

[0032] Figure 5 A cross-sectional view of an air conditioner according to another embodiment of the present invention;

[0033] Figure 6 yes Figure 5 An enlarged schematic diagram of the structure at point C.

[0034] Figure label:

[0035] 1. Air conditioner;

[0036] 100. Housing; 110. Air inlet; 120. Air outlet; 130. Containing cavity;

[0037] 200. Heat exchanger;

[0038] 300. Air duct component; 310. Front volute; 320. Rear volute; 321. Guide section; 322. Guide surface; 323. First straight guide surface; 324. Second straight guide surface; 325. First arc-shaped guide surface; 327. Second arc-shaped guide surface; 328. Third arc-shaped guide surface; 330. Air outlet duct;

[0039] 400. Fan. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0043] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0044] An air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0045] like Figures 1-6 As shown in the figure, the air conditioner 1 in this embodiment of the utility model can be a wall-mounted air conditioner. The up and down direction in the figure refers to the up and down direction of the air conditioner 1, and the front and back direction refers to the front and back direction of the air conditioner 1.

[0046] According to this utility model embodiment, the air conditioner 1 may include a housing 100, which is fixed to a wall. The housing 100 has an air inlet 110 on its upper side and an air outlet 120 on its lower front side. A receiving cavity 130 is formed within the housing 100. This allows the internal components of the air conditioner 1 to be housed within the receiving cavity 130, thus protecting them with the housing 100. Furthermore, by providing the air inlet 110 and air outlet 120 on the housing 100, indoor air can flow into the air conditioner 1 through the air inlet 110 and exit from the air conditioner 1 through the air outlet 120.

[0047] Air conditioner 1 may include a heat exchanger 200, which is located inside the casing 100 and adjacent to the air inlet 110. This allows the air flowing into the casing 100 from the air inlet 110 to directly contact the heat exchanger 200, so that the refrigerant in the heat exchanger 200 can efficiently exchange heat with the indoor air. In this way, the heat exchanger 200 can absorb heat from the indoor air or release heat to the indoor air to achieve cooling or heating of the room.

[0048] Air conditioner 1 may include an air duct component 300, which is disposed within the casing 100 and located on the side of heat exchanger 200 facing the air outlet 120. The air duct component 300 is constructed with an air outlet duct 330, which is connected to the air outlet 120. That is, in the direction of airflow, the air duct component 300 can be located downstream of the heat exchanger 200, so that air can flow towards the air duct component 300. The air duct component 300 can guide the flow of the heat-exchanged air to make the airflow more orderly, and the air can flow into the room through the air outlet 120 along the air outlet duct 330.

[0049] Air conditioner 1 may include a fan 400, which is located inside the housing 100 and at least partially within the air duct 300. The fan 400 drives indoor air to enter the housing 100 from the air inlet 110, and the indoor air flows into the room from the air outlet 120 after exchanging heat with the heat exchanger 200.

[0050] The fan 400 can be partially or entirely housed within the ductwork 300. The fan 400 drives and guides the flow of indoor air, accelerating the airflow rate and improving the heat exchange efficiency between the air and the heat exchanger 200. Furthermore, placing the fan 400 within the ductwork 300, driven by the fan, guides the passing air through the ductwork 300, which helps increase the airflow of the air conditioner 1.

[0051] The air duct component 300 may include a front volute 310, which is located on the front side of the receiving cavity 130 and extends partially along the circumference of the fan 400. This arrangement allows the front volute 310 to guide the airflow, making the airflow more stable and orderly.

[0052] The air duct component 300 may include a rear volute 320, which is located on the rear side of the receiving cavity 130 and extends partially along the circumference of the fan 400. An air outlet duct 330 is defined between the front volute 310 and the rear volute 320. The air outlet duct 330 can be used to guide the air flow so that the air flows along the air outlet duct 330 to the air outlet 120, and can then be discharged into the room through the air outlet 120.

[0053] Among them, the rear volute tongue 320 is provided with a guide section 321 at one end adjacent to the heat exchanger 200, and a guide surface 322 is provided on the side of the guide section 321 facing the fan 400. At least a portion of the guide surface 322 is recessed in the direction away from the fan 400.

[0054] The fact that at least a portion of the guide surface 322 is recessed in a direction away from the fan 400 means that the guide surface 322 can be partially recessed in a direction away from the fan 400, or the entire guide surface 322 can be recessed in a direction away from the fan 400. This configuration allows a recess to be formed on the guide surface 322, enabling the guide section 321 to form a "centripetal" bend.

[0055] As the Coanda effect shows, fluids tend to adhere to and flow along nearby curved surfaces rather than maintaining their original straight paths. By creating a centripetal concave design on the side of the rear volute 320 facing the fan 400, the concave rear volute 320 away from the center of the fan 400 can concentrate and guide the gas leaving the fan 400, and convert part of the gas's kinetic energy into static pressure to guide the airflow, and then convert it back into dynamic pressure to form specific forced convection. This helps to accelerate the gas flow into the air outlet duct 330, thereby accelerating the gas flow between the rear volute 320 and the fan 400, and increasing the airflow velocity to improve the overall air volume of the air conditioner 1, resulting in a better user experience.

[0056] Thus, according to the embodiment of the present invention, the air conditioner 1 has a concentric recessed design at one end of the rear volute 320 adjacent to the heat exchanger 200. The concave guide surface 322 can be used to guide the gas flow, which helps to accelerate the gas flow into the air outlet duct 330, thereby increasing the airflow velocity and increasing the air volume of the air conditioner 1.

[0057] In some specific embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the guide surface 322 may include a first straight guide surface 323. The first straight guide surface 323 is located at the end of the guide section 321 away from the heat exchanger 200. In this way, the first straight guide surface 323 can be used to guide the air. The air driven by the fan 400 can flow into the space between the guide surface 322 and the fan 400 along the first straight guide surface 323.

[0058] Furthermore, the guide surface 322 may include a second straight guide surface 324, which is located at one end of the guide section 321 adjacent to the heat exchanger 200. In this way, the second straight guide surface 324 can also guide the airflow so that the air flows more smoothly into the air outlet duct 330, which is beneficial to improving the air guiding efficiency of the air conditioner 1.

[0059] One end of the second linear guide surface 324 can be connected to one end of the first linear guide surface 323. By setting the guide surface 322 as the first linear guide surface 323 and the second linear guide surface 324, the structure of the plane can be relatively simple. This simplifies the structure of the guide surface 322 and, consequently, simplifies the structure of the rear volute tongue 320, making it easier to process.

[0060] Specifically, from bottom to top along the vertical direction, both the first straight guide surface 323 and the second straight guide surface 324 are inclined toward the direction of the fan 400, and the angle between the first straight guide surface 323 and the horizontal direction is different from the angle between the second straight guide surface 324 and the horizontal direction.

[0061] For example, the angle between the first straight guide surface 323 and the horizontal direction can be greater than the angle between the second straight guide surface 324 and the horizontal direction. This arrangement can prevent the radial distance between the first straight guide surface 323 and the fan 400 from being too small, so as to ensure that the air flow can be larger and the air volume at the outlet is more sufficient. Moreover, the first straight guide surface 323 and the second straight guide surface 324 can form an angle, and the airflow flowing along the second straight guide surface 324 can flow towards the first straight guide surface 323. In this way, the direction of the airflow can be changed by the first straight guide surface 323, so that the airflow can flow more smoothly into the air outlet duct 330.

[0062] In addition, with this configuration, the first straight guide surface 323 and the second straight guide surface 324 can be recessed in a direction away from the fan 400. This allows the first straight guide surface 323 and the second straight guide surface 324 to concentrate and guide the air, and to convert part of the kinetic energy of the air into static pressure to guide the airflow. Then, it is converted back into dynamic pressure to form a specific forced convection, which accelerates the airflow between the rear volute tongue 320 and the fan 400, thereby increasing the overall air volume of the air conditioner 1.

[0063] Furthermore, such as Figure 2 As shown, along the circumferential direction of the fan 400, the size of the first straight guide surface 323 is larger than the size of the second straight guide surface 324.

[0064] With this configuration, airflow can flow along the second straight guide surface 324 into the space between the fan 400 and the rear volute 320. Since the size of the first straight guide surface 323 can be relatively large, the contact area between the air and the first straight guide surface 323 can be relatively large, the guiding distance of the first straight guide surface 323 to the air can be relatively long, and the adhesion of the air to the first straight guide surface 323 can be enhanced. This can improve the guiding effect of the first straight guide surface 323 on the airflow, so that the air can flow more smoothly into the air duct component 300, thereby increasing the air volume of the air conditioner 1.

[0065] In some specific embodiments of this utility model, such as Figure 2 As shown, the guide surface 322 may further include a first arc-shaped guide surface 325, which is disposed between the first straight guide surface 323 and the second straight guide surface 324, and the first straight guide surface 323 and the second straight guide surface 324 are tangent to the first arc-shaped guide surface 325 respectively.

[0066] In other words, the first straight guide surface 323 and the second straight guide surface 324 are connected by a first arc-shaped guide surface 325. This arrangement makes the transition at the connection between the first straight guide surface 323 and the second straight guide surface 324 smoother, allowing airflow to flow more smoothly from the first straight guide surface 323 through the first arc-shaped guide surface 325 to the second straight guide surface 324. This not only avoids turbulence at the transition between the first straight guide surface 323 and the second straight guide surface 324, but also utilizes the first arc-shaped guide surface 325 to enhance the wall adhesion effect of the airflow, thus more effectively guiding the air. This helps reduce noise caused by air impact or sharp turns, resulting in lower operating noise for the air conditioner 1 and a better user experience.

[0067] In some specific embodiments of this utility model, such as Figure 2 As shown, the angle between the first straight guide surface 323 and the horizontal direction is A, and A satisfies: 50°≤A.

[0068] In other words, the angle A between the first straight guide surface 323 and the horizontal direction cannot be too small. If the angle A is too small, the first straight guide surface 323 will be excessively tilted. This will not only result in a small radial distance between the first straight guide surface 323 and the fan 400, hindering airflow and reducing the output air volume, but also cause a significant change in the direction of the airflow when flowing towards the first straight guide surface 323, easily generating turbulence and noise. Therefore, A cannot be less than 50°.

[0069] Preferably, 52°≤A, so that the first straight guide surface 323 and the fan 400 maintain a large distance in the radial direction, and the first straight guide surface 323 will not be excessively tilted, the air volume can be large, and turbulence can be avoided between the first straight guide surface 323 and the fan 400, and the noise generated by the air flow can be reduced.

[0070] More preferably, 54°≤A, which allows for a larger radial distance between the first linear guide surface 323 and the fan 400, thus more effectively increasing the air volume and better avoiding turbulence and noise, resulting in a better user experience.

[0071] In some specific embodiments, the angle between the first linear guide surface 323 and the horizontal direction is A, and A satisfies: A≤60°.

[0072] In other words, the angle A between the first straight guide surface 323 and the horizontal direction cannot be too large. If the angle A between the first straight guide surface 323 and the horizontal direction is too large, the first straight guide surface 323 will be far away from the fan 400, and the inclination of the first straight guide surface 323 will not be obvious, thus making it impossible to effectively guide the airflow using the first straight guide surface 323. Therefore, A cannot be greater than 60°.

[0073] Preferably, A ≤ 58°, so that the angle A between the first straight guide surface 323 and the horizontal direction is small, the first straight guide surface 323 guides the airflow better, and thus improves the smoothness of airflow.

[0074] More preferably, A ≤ 56°, so that the angle A between the first straight guide surface 323 and the horizontal direction is smaller, the first straight guide surface 323 can be significantly inclined towards the direction of the fan 400, the first straight guide surface 323 guides the airflow better, thereby improving the smoothness of airflow and the air volume can be larger, thus improving the overall ventilation efficiency of the air conditioner 1.

[0075] Specifically, 50°≤A≤60°, for example, A can be 50°, 52°, 54°, 56°, 58° or 60°. This setting can avoid the angle A between the first straight guide surface 323 and the horizontal direction being too small, so as to make the air volume larger and avoid turbulence and noise. It can also avoid the angle A between the first straight guide surface 323 and the horizontal direction being too large, so that the first straight guide surface 323 can effectively guide the air, so that the air flows more orderly in the air outlet duct 330, thereby increasing the air volume of the air outlet 120 and thus improving the overall ventilation efficiency of the air conditioner 1.

[0076] In some specific embodiments, such as Figure 2 As shown, the angle between the first straight guide surface 323 and the horizontal direction is A, and the angle between the second straight guide surface 324 and the horizontal direction is B. Wherein, A and B satisfy: 0.65 × A ≤ B.

[0077] In other words, the angle B between the second straight guide surface 324 and the horizontal direction cannot be too small. If the angle B between the second straight guide surface 324 and the horizontal direction is too small, the radial distance between the second straight guide surface 324 and the fan 400 will be too small, and air will not be able to flow smoothly through the second straight guide surface 324 into the air outlet duct 330, thus reducing the air volume at the air outlet 120. Therefore, 0.65 × A ≤ B.

[0078] Preferably, 0.68×A≤B, so that the second straight guide surface 324 and the fan 400 maintain a large distance in the radial direction, so that the airflow can flow between the second straight guide surface 324 and the fan 400. The second straight guide surface 324 can be used to concentrate and guide the heat-exchanged air, so that the heat-exchanged air can flow smoothly through the air outlet duct 330 to the air outlet 120. This can increase the air volume of the air outlet 120, thereby improving the overall ventilation efficiency of the air conditioner 1.

[0079] More preferably, 0.71×A≤B, which allows for a larger radial distance between the second straight guide surface 324 and the fan 400, making it easier for airflow to flow between the second straight guide surface 324 and the fan 400. At the same time, the second straight guide surface 324 can better concentrate and guide the heat-exchanged air, so that the heat-exchanged air can flow more smoothly through the air outlet duct 330 to the air outlet 120, which can further increase the air volume of the air outlet 120, and thus further improve the overall ventilation efficiency of the air conditioner 1.

[0080] In some specific embodiments, the angle between the first linear guide surface 323 and the horizontal direction is A, and the angle between the second linear guide surface 324 and the horizontal direction is B, and A and B satisfy: B≤0.8×A.

[0081] In other words, the angle B between the second straight guide surface 324 and the horizontal direction cannot be too large. If the angle B is too large, the second straight guide surface 324 cannot effectively guide the air, and the radial distance between the second straight guide surface 324 and the fan 400 will be large. The rear volute tongue 320 will be close to the heat exchanger 200 on the second straight guide surface 324, making positional interference more likely. Therefore, B ≤ 0.8 × A.

[0082] Preferably, B ≤ 0.77 × A, so that the angle B between the second straight guide surface 324 and the horizontal direction can be small, so that the second straight guide surface 324 can guide the airflow, which is beneficial to accelerate the gas flow between the rear volute tongue 320 and the fan 400, and can increase the airflow velocity to increase the overall air volume of the air conditioner 1.

[0083] More preferably, B ≤ 0.74 × A, so that the angle B between the second straight guide surface 324 and the horizontal direction can be smaller, the second straight guide surface 324 has a better guiding effect on the airflow, which is conducive to accelerating the gas flow between the rear volute tongue 320 and the fan 400, and can increase the airflow velocity to increase the overall air volume of the air conditioner 1.

[0084] Specifically, 0.65×A≤B≤0.8×A. For example, B can be 0.65×A, 0.67×A, 0.69×A, 0.7×A, 0.72×A, 0.74×A, 0.76×A, 0.78×A, or 0.8×A. This avoids the angle B between the second straight guide surface 324 and the horizontal direction being too small, ensuring that the airflow can smoothly flow through the air outlet duct 330 to the air outlet 120. It also avoids the angle B between the second straight guide surface 324 and the horizontal direction being too large, so that the second straight guide surface 324 can effectively guide the air so that the air flows in an orderly manner within the air outlet duct 330.

[0085] In other specific embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the guide surface 322 may include a first straight guide surface 323 and a second arc-shaped guide surface 327.

[0086] The first straight guide surface 323 is located at the end of the guide section 321 away from the heat exchanger 200, and is inclined from bottom to top in the vertical direction. The second arc-shaped guide surface 327 is located at the end of the guide section 321 adjacent to the heat exchanger 200. The second arc-shaped guide surface 327 is connected to and tangent to the first straight guide surface 323.

[0087] Compared to the previous embodiment, the guide surface 322 in this embodiment may only include the first straight guide surface 323 and the second arc-shaped guide surface 327. That is, in this embodiment, the length of the second arc-shaped guide surface 327 can be extended to omit the second straight guide surface 324. With this setting, the length of the second arc-shaped guide surface 327 can be longer, which can improve the guiding effect of the guide surface 322 on the airflow and more effectively reduce the turbulence or noise generated by the air at the guide surface 322, resulting in smoother airflow and a better user experience.

[0088] In other specific embodiments of this utility model, such as Figure 2 As shown, the thickness of the end of the guide section 321 facing the heat exchanger 200 is W1, and the thickness of the guide section 321 at the first straight guide surface 323 is W2. W1 and W2 satisfy: W1 < W2.

[0089] By setting a smaller thickness W1 at the end of the guide section 321 facing the heat exchanger 200, it is easier to process and demold the rear volute tongue 320.

[0090] Furthermore, by reducing the thickness of the end of the guide section 321 facing the heat exchanger 200, the gap between the end of the guide section 321 and the rear bend of the heat exchanger 200 can be increased. This prevents vibrations generated during the operation or transportation of the air conditioner 1 from causing collisions or interference between the rear volute tongue 320 and the heat exchanger 200. Moreover, this design results in a larger horizontal distance between the rear volute tongue 320 and the rear bend of the heat exchanger 200, thereby reducing the amount of condensate dripping from the heat exchanger 200 onto the end of the rear volute tongue 320. This reduces the amount of condensate entering the air duct 300, preventing excessive condensate from being blown out through the air outlet 120, thus improving the user experience.

[0091] In other specific embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the guide surface 322 is constructed as a third arc-shaped guide surface 328.

[0092] In other words, the entire guide surface 322 in this embodiment can be constructed as an arc surface. It is understood that air tends to flow along an arc surface. By constructing the guide surface 322 as a complete arc surface, the airflow can better adhere to the third arc-shaped guide surface 328. The guide surface 322 can better concentrate and guide the air, and convert part of the kinetic energy of the air into static pressure to guide the airflow, and then convert it back into dynamic pressure to form specific forced convection, so as to accelerate the airflow between the rear volute tongue 320 and the fan 400, thereby increasing the air volume of the air conditioner 1.

[0093] In some specific embodiments of this utility model, the rear volute tongue 320 may also include a reinforcing section (not shown in the figure), which is connected to the end of the guide section 321 facing the heat exchanger 200. In this way, the reinforcing section can be used to improve the structural strength of the end of the rear volute tongue 320.

[0094] In some specific embodiments of this utility model, such as Figure 2 As shown, along the radial direction of the fan 400, the minimum distance between the front volute 310 and the fan 400 is T1, the maximum distance between the front volute 310 and the fan 400 is T2, the maximum distance between the rear volute 320 and the fan 400 is T3, and the outer diameter of the fan 400 is D.

[0095] Among them, T1, T2, T3 and D satisfy: 0.04×D≤T1≤0.065×D; 0.07×D≤T2≤0.1×D; 0.04×D≤T3≤0.065×D.

[0096] Where T1 and D satisfy: 0.04×D≤T1.

[0097] In other words, the minimum distance T1 between the front volute 310 and the fan 400 cannot be too small. If T1 is too small, the distance between the front volute 310 and the fan 400 will be too close. When the air conditioner 1 experiences significant vibration during transportation or operation, the front volute 310 may collide and interfere with the fan 400. Furthermore, noise will be generated when the airflow passes through the gap between the front volute 310 and the fan 400, resulting in a poor user experience. Therefore, T1 cannot be less than 0.04 × D.

[0098] Preferably, 0.045×D≤T1, so that the minimum distance T1 between the front volute 310 and the fan 400 can be larger, that is, the safety distance can be larger. This not only avoids collision interference between the front volute 310 and the fan 400, thus improving safety, but also reduces airflow noise and provides a better user experience.

[0099] In some specific embodiments, D and T1 satisfy: T1≤0.065×D.

[0100] In other words, the minimum distance T1 between the front volute 310 and the fan 400 cannot be too large. If the minimum distance T1 between the front volute 310 and the fan 400 is too large, it will lead to an increase in the airflow returning between the front volute 310 and the fan 400, thereby reducing the airflow flowing out through the air outlet 120, decreasing the overall air volume of the air conditioner 1, and resulting in poor air delivery performance. Therefore, T1 cannot be greater than 0.065 × D.

[0101] Preferably, T1 ≤ 0.06 × D, which can reduce the minimum distance T1 between the front volute 310 and the fan 400, thereby reducing the airflow recirculation between the front volute 310 and the fan 400, and thus increasing the air volume of the air outlet 120 to improve the air supply effect of the air conditioner 1.

[0102] Specifically, T1 and D satisfy: 0.04×D≤T1≤0.065×D. For example, T1 can be 0.04×D, 0.045×D, 0.05×D, 0.055×D, 0.06×D, or 0.065×D. This can avoid collision and interference between the front volute 310 and the fan 400, reduce airflow noise, and reduce the backflow of air between the front volute 310 and the fan 400, so as to ensure that the overall air volume of the air conditioner 1 can be large.

[0103] In some specific embodiments, D and T2 satisfy: 0.07 × D ≤ T2.

[0104] In other words, the maximum distance T2 between the front volute 310 and the fan 400 cannot be too small. If T2 is too small, the distance between the front volute 310 and the fan 400 will be too close. During the transportation of the air conditioner 1 or when the fan 400 vibrates during operation, the front volute 310 may collide and interfere with the fan 400. Furthermore, noise will be generated when air flows through the gap between the front volute 310 and the fan 400, resulting in a poor user experience.

[0105] Preferably, 0.08×D≤T2, so that the maximum distance T2 between the front volute 310 and the fan 400 can be larger, and the distance between the front volute 310 and the fan 400 can be larger. This not only avoids collision interference between the front volute 310 and the fan 400, thus improving safety, but also reduces airflow noise and provides a better user experience.

[0106] In some specific embodiments, T2 and D satisfy: T2≤0.1×D.

[0107] In other words, the maximum distance T2 between the front volute 310 and the fan 400 cannot be too large. If the maximum distance T2 between the front volute 320 and the fan 400 is too large, it will lead to an increase in the airflow returning between the front volute 310 and the fan 400, which will result in a decrease in the airflow flowing out through the air outlet 120, a decrease in the overall air volume of the air conditioner 1, and poor air delivery effect. Therefore, T2 cannot be greater than 0.1×D.

[0108] Preferably, T2 ≤ 0.095 × D, which can reduce the maximum distance T2 between the front volute 310 and the fan 400, thereby reducing the airflow that flows back between the front volute 310 and the fan 400, and thus increasing the air volume of the air outlet 120 to improve the air supply effect of the air conditioner 1.

[0109] Specifically, 0.07×D≤T2≤0.1×D. For example, T2 can be 0.07×D, 0.075×D, 0.08×D, 0.085×D, 0.09×D, 0.095×D, or 0.1×D. This can avoid collision and interference between the front volute 310 and the fan 400, reduce airflow noise, and reduce the backflow of air between the front volute 310 and the fan 400, so as to ensure that the overall air volume of the air conditioner 1 can be large.

[0110] In some specific embodiments, T3 and D satisfy: 0.04 × D ≤ T3.

[0111] In other words, the minimum distance T3 between the rear volute 320 and the fan 400 cannot be too small. If T3 is too small, the distance between the rear volute 320 and the fan 400 will be too close. When the air conditioner 1 experiences significant vibration during transportation or operation, the rear volute 320 may collide and interfere with the fan 400. Furthermore, significant noise will be generated when air flows between the rear volute 320 and the fan 400, resulting in a poor user experience. Therefore, T3 cannot be less than 0.04 × D.

[0112] Preferably, 0.045×D≤T3, so that the minimum distance between the rear volute tongue 320 and the fan 400 can be larger, that is, the safety distance can be larger. This not only avoids collision interference between the rear volute tongue 320 and the fan 400, thus improving safety, but also reduces airflow noise and provides a better user experience.

[0113] In some specific embodiments, D and T3 satisfy: T3≤0.065×D.

[0114] In other words, the minimum distance T3 between the rear volute 320 and the fan 400 cannot be too large. If the minimum distance T3 between the rear volute 320 and the fan 400 is too large, the airflow velocity between the rear volute 320 and the fan 400 will decrease, resulting in a decrease in the air volume within the outlet duct 330, a decrease in the overall air volume of the air conditioner 1, and poor air delivery effect. Therefore, T3 cannot be greater than 0.065 × D.

[0115] Preferably, T3 ≤ 0.06 × D, which can reduce the minimum distance T3 between the rear volute tongue 320 and the fan 400, thereby increasing the airflow velocity between the rear volute tongue 320 and the fan 400, and thus increasing the airflow volume of the air outlet 120 to improve the air supply effect of the air conditioner 1.

[0116] Specifically, 0.04×D≤T3≤0.065×D. For example, T2 can be 0.04×D, 0.045×D, 0.05×D, 0.055×D, 0.06×D, or 0.065×D. This can avoid collision and interference between the rear volute tongue 320 and the fan 400, reduce airflow noise, and ensure that the air velocity between the rear volute tongue 320 and the fan 400 is relatively large, so as to ensure that the overall air volume of the air conditioner 1 can be relatively large.

[0117] In addition, it should be noted that the minimum distance T1 between the front volute 310 and the fan 400 and the minimum distance T3 between the rear volute 320 and the fan 400 can be the same or different.

[0118] In some specific embodiments of this utility model, the rear volute tongue 320 is provided with multiple reinforcing ribs (not shown in the figure) on the side facing away from the fan 400, and the multiple reinforcing ribs correspond to at least the guide section 321.

[0119] Among them, multiple reinforcing ribs can be arranged at intervals along the left and right directions of the air conditioner 1, the reinforcing ribs can extend along the circumference of the fan 400 on the rear volute tongue 320, and the reinforcing ribs can extend from the guide section 321 to the rest of the rear volute tongue 320.

[0120] Understandably, by constructing the guide section 321 as a concentric recess, the thickness of the guide section 321 will be reduced. By adding multiple reinforcing ribs, the structural strength of the guide section 321 can be improved, thereby enhancing the deformation resistance of the rear volute tongue 320 at the position of the guide section 321. On the one hand, this can prevent the rear volute tongue 320 from deforming due to vibration during transportation, and on the other hand, it can prevent the rear volute tongue 320 from deforming or vibrating during the process of guiding airflow. This is beneficial to improving the guiding effect of the rear volute tongue 320 and can also prevent the rear volute tongue 320 from generating noise due to vibration.

[0121] Other components and operations of the air conditioner 1 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0122] The air conditioner 1 of this invention performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0123] The compressor compresses refrigerant gas under high temperature and pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0124] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, air conditioner 1 regulates the temperature and humidity of the indoor space.

[0125] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0126] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, comprising: The housing is fixed to a wall, with an air inlet on the upper side and an air outlet on the lower front side of the housing, and a receiving cavity is formed inside the housing. A heat exchanger, wherein the heat exchanger is disposed within the housing and adjacent to the air inlet; A duct component is disposed inside the housing and located on the side of the heat exchanger facing the air outlet. The duct component is configured with an air outlet duct, which is connected to the air outlet. A fan is disposed inside the housing and at least partially located within the air duct component. The fan drives indoor air to enter the housing from the air inlet, and the indoor air flows into the room through the air duct component and the air outlet after exchanging heat with the heat exchanger. Its features are, The air duct component includes: The front volute tongue is located on the front side of the receiving cavity and extends partially along the circumference of the fan; The rear volute is located on the rear side of the receiving cavity and extends partially along the circumference of the fan. The front volute and the rear volute define the air outlet duct. in, The rear volute tongue is provided with a flow guide section at one end adjacent to the heat exchanger, and the flow guide section is provided with a flow guide surface on the side facing the fan, and at least a portion of the flow guide surface is recessed in the direction away from the fan.

2. The air conditioner of claim 1, wherein The guide surface includes: A first straight guide surface is provided at the end of the guide section away from the heat exchanger; The second straight guide surface is located at one end of the guide section adjacent to the heat exchanger; In particular, along the vertical direction from bottom to top, both the first straight guide surface and the second straight guide surface are inclined towards the direction of the fan, and the angle between the first straight guide surface and the horizontal direction and the angle between the second straight guide surface and the horizontal direction are different.

3. The air conditioner of claim 2, wherein Along the circumferential direction of the fan, the size of the first straight guide surface is larger than the size of the second straight guide surface.

4. The air conditioner of claim 2, wherein The guide surface also includes: A first arc-shaped guide surface is disposed between the first straight guide surface and the second straight guide surface, and the first straight guide surface and the second straight guide surface are respectively tangent to the first arc-shaped guide surface.

5. The air conditioner of claim 2, wherein The angle between the first straight guide surface and the horizontal direction is A, and the angle between the second straight guide surface and the horizontal direction is B; Among them, A and B satisfy: 50°≤A≤60°, and 0.65×A≤B≤0.8×A.

6. The air conditioner of claim 1, wherein The guide surface includes: The first straight guide surface is located at the end of the guide section away from the heat exchanger and is inclined from bottom to top in the vertical direction. The second arc-shaped guide surface is located at one end of the guide section adjacent to the heat exchanger, and the second arc-shaped guide surface is connected to and tangent to the first straight guide surface.

7. The air conditioner according to claim 2 or 6, wherein The thickness of the guide section facing the heat exchanger is W1, and the thickness of the guide section at the first straight guide surface is W2. W1 and W2 satisfy: W1 < W2.

8. The air conditioner of claim 1, wherein The guide surface is constructed as a third arc-shaped guide surface.

9. The air conditioner of claim 1, wherein Along the radial direction of the fan, the minimum distance between the front volute and the fan is T1, the maximum distance between the front volute and the fan is T2, the minimum distance between the rear volute and the fan is T3, and the outer diameter of the fan is D; Among them, T1, T2, T3, and D satisfy: 0.04×D≤T1≤0.065×D; 0.07×D≤T2≤0.1×D; 0.04×D≤T3≤0.065×D.

10. The air conditioner of claim 1, wherein The rear volute tongue is provided with multiple reinforcing ribs on the side facing away from the fan, and the multiple reinforcing ribs correspond to at least the guide section.

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