Air conditioner

Abstract

The air conditioner comprises an indoor unit, the indoor unit comprises a machine shell, a heat exchanger and a volute, the volute is arranged in the machine shell, an air channel structure is formed in the volute, the volute comprises a front volute tongue, a rear volute tongue and an airflow guiding piece, one end of the airflow guiding piece is connected with the end, facing the air outlet end, of the rear volute tongue, and the other end of the airflow guiding piece extends to an air outlet; the airflow guide piece comprises a guide surface and a rectification bulge, and the air-conditioning air flows to the air outlet through the guide surface; the rectification protrusion is arranged on the guide face in a protruding mode and located at the air outlet, the surface, away from the guide face, of the rectification protrusion is a drainage face, and the drainage face is configured to enable air conditioner air flowing out along the guide face to flow out downwards relative to the guide face when flowing through the drainage face so that airflow can leave the air outlet more stably. High-frequency noise and vortex noise generated by uneven air outlet speed and disordered directions and adverse effects on the air outlet effect are avoided, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to an air conditioner. Background Technology

[0002] Air conditioning, or air conditioner, refers to equipment that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow rate of the air in a building or structure.

[0003] An air conditioner consists of an indoor unit and an outdoor unit. It regulates the indoor temperature by exchanging heat with the indoor air through a refrigerant that flows between the indoor and outdoor units.

[0004] However, during the operation of an air conditioner, eddies and turbulence often occur when air flows through the air duct structure inside the casing and near the air outlet. Turbulent airflow collides and rubs against each other at the air outlet, generating significant noise. Furthermore, eddies and turbulence prevent the airflow from being blown out evenly and stably, resulting in poor airflow performance and affecting the user experience. Utility Model Content

[0005] This application discloses an air conditioner that can improve the user experience.

[0006] To achieve the above objectives, this application discloses an air conditioner, comprising:

[0007] Indoor unit, including:

[0008] The housing includes an air inlet and an air outlet, which are respectively located at both ends of the housing in the width direction;

[0009] A heat exchanger is disposed inside the housing and along the width direction of the housing, between the air inlet and the air outlet, for exchanging heat with the air entering the housing.

[0010] A heat exchange fan is installed inside the housing to introduce air into the housing from the air inlet, and to form air conditioning air after the air is heated by the heat exchanger and then sent out from the air outlet.

[0011] A volute is disposed within the housing, and an air duct structure is formed within the volute. The air inlet end of the air duct structure is connected to the air inlet, and the air outlet end of the air duct structure is connected to the air outlet. The volute includes:

[0012] A front volute is disposed near the air outlet end. The front volute has a front volute guide surface, which is the surface of the front volute facing the heat exchange fan.

[0013] The rear volute is located near the air inlet end and has a rear volute guide surface, which is the surface of the rear volute facing the heat exchange fan.

[0014] An airflow guide, one end of which is connected to the end of the rear volute tongue facing the air outlet, and the other end of which extends to the air outlet to guide the air conditioning air out of the air outlet, the airflow guide comprising:

[0015] The air conditioning air flows through the guide surface to the air outlet;

[0016] A rectifier protrusion is provided on the guide surface and located at the air outlet. The surface of the rectifier protrusion away from the guide surface is a flow-guiding surface. The flow-guiding surface is configured to allow the air conditioning air flowing out along the guide surface to be discharged downward relative to the guide surface when it flows through the flow-guiding surface.

[0017] In this way, when the air conditioning air passes through the air intake surface, the rectifier protrusion changes the speed distribution and flow direction of the airflow at the air outlet, which effectively suppresses the noise that might have been generated at the air outlet due to rapid impact and irregular diffusion. This allows the airflow to leave the air outlet more smoothly, avoiding high-frequency noise and eddy noise caused by uneven airflow speed and chaotic direction, as well as adverse effects on the airflow effect, thereby improving the user experience.

[0018] This application also provides an air conditioner, including:

[0019] Indoor unit, including:

[0020] The housing includes an air inlet and an air outlet, which are respectively located at both ends of the housing in the width direction;

[0021] A heat exchanger is disposed inside the housing and along the width direction of the housing, between the air inlet and the air outlet, for exchanging heat with the air entering the housing.

[0022] A heat exchange fan is installed inside the housing to introduce air into the housing from the air inlet, and to form air conditioning air after the air is heated by the heat exchanger and then sent out from the air outlet.

[0023] A volute is disposed within the housing, and an air duct structure is formed within the volute. The air inlet end of the air duct structure is connected to the air inlet, and the air outlet end of the air duct structure is connected to the air outlet. The volute includes:

[0024] A front volute is disposed near the air outlet end. The front volute has a front volute guide surface, which is the surface of the front volute facing the heat exchange fan.

[0025] The rear volute is located near the air inlet end and has a rear volute guide surface, which is the surface of the rear volute facing the heat exchange fan.

[0026] An airflow guide, one end of which is connected to the end of the rear volute tongue facing the air outlet, and the other end of which extends toward the air outlet to guide the air after heat exchange by the indoor heat exchanger to be sent out of the air outlet; the airflow guide includes;

[0027] The air conditioning air flows through the guide surface to the air outlet;

[0028] Along the radial direction of the heat exchange fan, there is a height difference between the rear volute tongue guide surface and the guide surface, the height difference causing the guide surface to be radially away from the heat exchange fan relative to the rear volute tongue guide surface.

[0029] In this way, the airflow has enough space to buffer and adjust its direction, reducing the intensity and frequency of airflow rebound, thereby reducing the turbulence caused by airflow rebound. Furthermore, the airflow speed near the rear volute guide surface of the heat exchange fan is relatively fast, while the air flowing along the guide surface is relatively slow because it is slightly farther away from the heat exchange fan. This speed difference allows the air to transition and mix more naturally during the flow, avoiding turbulence caused by sudden speed changes. The airflows of different speeds gradually merge in the space formed by the height difference, forming a more stable and uniform airflow field.

[0030] This application also provides an air conditioner, wherein the airflow surface is a curved surface that protrudes toward the heat exchange fan.

[0031] In this way, the curved airflow guide surface protruding towards the heat exchange fan effectively reduces the generation of turbulence by achieving smooth airflow transition, dispersing airflow pressure, suppressing vortex formation, and optimizing airflow velocity distribution. This significantly reduces the airflow noise of the air conditioner and provides users with a quieter and more comfortable operating environment.

[0032] This application also provides an air conditioner, wherein the rectifier protrusion has a protrusion height of 3mm-7mm relative to the guide surface.

[0033] Thus, a protrusion height of 3mm-7mm ensures effective airflow redirection while maintaining airflow stability and reducing airflow deviation. This allows the air conditioning air to be distributed more evenly throughout the room, helping to suppress turbulence and reduce noise caused by turbulence. Furthermore, when the air conditioning air passes over the rectifier protrusion, the appropriate protrusion height allows the airflow to transition smoothly over the guide surface, avoiding violent disturbances and eddies caused by sudden changes in airflow. By reducing turbulence, airflow noise is effectively reduced, creating a quieter operating environment for users.

[0034] This application also provides an air conditioner, wherein the distance from the connection point between the air intake surface and the guide surface to the air outlet is 5mm-20mm along the extending direction of the guide surface.

[0035] In this way, when the airflow flows out from the intake surface, it can transition to the air outlet relatively smoothly within a distance of 5mm-20mm, reducing the disturbance and turbulence caused by the rapid change of airflow in a short distance, making the air conditioner operate more quietly and creating a quieter operating environment for users.

[0036] This application also provides an air conditioner in which the gap between the front volute guide surface and the heat exchange fan along the radial direction of the heat exchange fan is 4mm-7.5mm.

[0037] Thus, the 4mm-7.5mm gap provides sufficient buffer space for the airflow, allowing it to gradually adjust its speed and direction after leaving the fan, avoiding direct impact on the front volute guide surface and reducing turbulence caused by the impact.

[0038] This application also provides an air conditioner in which the gap between the portion of the rear volute guide surface near the air inlet end and the heat exchange fan along the radial direction of the heat exchange fan is 3.5mm-5.5mm.

[0039] Thus, a gap of 3.5mm-5.5mm can effectively prevent this from happening, providing sufficient buffer space for the airflow, allowing the airflow to gradually slow down and adjust its direction when approaching the guide surface and fan, reducing turbulence caused by airflow impact and rebound, and reducing noise and energy loss caused by turbulence.

[0040] This application also provides an air conditioner, wherein the height difference is 2mm-10mm.

[0041] Thus, the height difference of 2mm-10mm allows the airflow boundary layers at different levels to develop relatively independently, reducing the degree of interference between boundary layers and effectively suppressing airflow separation caused by boundary layer interference, allowing the airflow to flow more smoothly from the heat exchange fan to the air outlet.

[0042] This application also provides an air conditioner, the housing of which includes:

[0043] Mounting base, the heat exchanger and heat exchange fan are both mounted on the mounting base, and the volute is integrally formed on the mounting base;

[0044] A water collection tray is disposed below the heat exchanger and integrally formed with the mounting base, and is used to collect condensate from the surface of the heat exchanger.

[0045] Thus, the one-piece design makes the drip tray and the mounting base a single structure. Compared with components assembled by other connection methods, its structure is more stable and can better withstand various forces during air conditioning operation, such as vibrations caused by fan rotation and thermal expansion and contraction caused by temperature changes. It reduces problems such as loosening and deformation that may occur due to weak connections between components, thereby extending the service life of the entire indoor air conditioning unit.

[0046] This application also provides an air conditioner, wherein the heat exchanger includes:

[0047] First heat exchange section;

[0048] Second heat exchange section;

[0049] The third heat exchange section, the first heat exchange section, the second heat exchange section and the third heat exchange section are arranged around the outer periphery of the heat exchange fan and connected in sequence, and the first heat exchange section and the second heat exchange section have a first included angle, and the second heat exchange section and the third heat exchange section have a second included angle.

[0050] In this way, by dividing the heat exchanger into three heat exchange sections and arranging them around the outer periphery of the heat exchange fan, the contact area between the heat exchanger and the air is increased. Compared with the traditional single heat exchange structure, this multi-section design allows more air to fully contact the surface of the heat exchanger, thereby improving the efficiency of heat exchange. During the operation of the air conditioner, whether in cooling or heating mode, the heat transfer between the air and the refrigerant can be achieved more quickly, enabling the air conditioner to reach the set temperature faster and improving the performance and energy efficiency of the air conditioner.

[0051] This application also provides an air conditioner, wherein a placement area is formed between the first heat exchange section, the second heat exchange section, the third heat exchange section, and the heat exchange fan;

[0052] The indoor unit includes:

[0053] An electric heater is disposed inside the housing and located in the placement area, and is used to heat the air entering the air duct structure through the air inlet.

[0054] In this way, the placement of the area allows the electric heater to directly heat the air entering the air duct structure. The air can quickly absorb heat and increase its temperature as it passes through the electric heater. Moreover, since this area is close to the heat exchange fan, the air heated by the electric heater can be mixed with other air in the air duct more quickly and evenly under the action of the fan, and then delivered to all corners of the room. This optimizes the heating effect of the airflow, improves the heating efficiency and uniformity of the air conditioning system, and avoids the problem of excessive indoor temperature differences caused by uneven local heating. Attached Figure Description

[0055] 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.

[0056] Figure 1 This is a front view of the air conditioner provided in the embodiment of this application;

[0057] Figure 2 This is a schematic diagram of the housing provided in an embodiment of this application;

[0058] Figure 3 This is an exploded view of the indoor unit provided in the embodiments of this application;

[0059] Figure 4 yes Figure 2 Sectional view at PP;

[0060] Figure 5 This is a schematic diagram of the volute and heat exchange fan inside the casing provided in an embodiment of this application;

[0061] Figure 6 This is a schematic diagram of the volute provided in an embodiment of this application;

[0062] Figure 7 yes Figure 5 Enlarged view of point A in the middle;

[0063] Figure 8 yes Figure 5 Enlarged view of point B in the middle;

[0064] Figure 9 yes Figure 5 Enlarged view of point C in the middle;

[0065] Figure 10 yes Figure 5 Enlarged view of point D in the middle;

[0066] Figure 11 A schematic diagram of the mounting base provided in the embodiments of this application;

[0067] Figure 12 This is a schematic diagram of the heat exchanger provided in an embodiment of this application;

[0068] Figure 13 This is a schematic diagram of an electric heater installed in a placement area according to an embodiment of this application.

[0069] Explanation of main figure symbols

[0070] 1-Air conditioner;

[0071] 10-Indoor unit; 11-Casing; 11a-Air inlet; 11b-Air outlet; 12-Panel; 12a-Air guide plate;

[0072] 100 - Heat exchanger; 110 - First heat exchange section; 120 - Second heat exchange section; 130 - Third heat exchange section;

[0073] 200-Heat exchange fan;

[0074] 300 - Volute; 310 - Air duct structure; 320 - Front volute tongue; 3201 - Front volute tongue guide surface; 330 - Rear volute tongue; 3301 - Rear volute tongue guide surface; 340 - Airflow guide; 3401 - Guide surface; 3402 - Rectifying protrusion; 3402a - Drainage surface;

[0075] 400 - Mounting base;

[0076] 500-Water Tray;

[0077] 600 - Electric heater. Detailed Implementation

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components whose specific types and structures may be the same or different, 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.

[0083] As mentioned in the background technology, during the operation of an air conditioner, eddies and turbulence often occur when air flows through the air duct structure inside the casing and near the air outlet. Turbulent airflow collides and rubs against each other at the air outlet, generating significant noise. Furthermore, eddies and turbulence prevent the airflow from being blown out evenly and stably, resulting in poor airflow performance and affecting the user experience.

[0084] To address the aforementioned issues, this application provides an air conditioner with a rectifier protrusion at the air outlet. When the air conditioner air reaches the rectifier protrusion of the airflow guide located at the air outlet, the air conditioner air is discharged downwards relative to the guide surface. This effectively suppresses the noise that might otherwise be generated at the air outlet due to rapid impact and irregular diffusion, allowing the airflow to leave the air outlet more smoothly. This avoids high-frequency noise and eddy noise caused by uneven airflow speed and chaotic direction, as well as adverse effects on the airflow effect, thereby improving the user experience.

[0085] The following will describe specific embodiments and appendices. Figure 1-13 The technical solution of the air conditioner in this application will be further explained.

[0086] like Figure 1 As shown, the air conditioner 1 includes an indoor unit 10. The indoor unit 10 is an important component of the air conditioner 1 system, mainly responsible for regulating the air indoors, and it is usually rectangular in shape.

[0087] like Figure 2As shown, the indoor unit 10 may include a housing 11, having an air inlet 11a and an air outlet 11b, with the air inlet 11a and the air outlet 11b respectively located at both ends of the housing 11 in its width direction.

[0088] The casing 11 houses the core components of the indoor unit 10, protecting them from interference and damage caused by external dust, moisture, and foreign objects. This ensures that these internal components operate normally in a relatively stable and clean environment, thereby guaranteeing the reliable overall functioning of the indoor unit 10. The width of the casing 11 is... Figure 2 The direction indicated by the middle arrow X.

[0089] like Figure 3 As shown, a panel 12 can be connected to the side of the housing 11 with the air outlet 11b. The air conditioning air blown out of the air outlet 11b passes through the panel 12 and is blown into the indoor space. The panel 12 is usually provided with an air guide plate 12a, which helps to disperse the airflow and make the blown air conditioning air more evenly and gently distributed in the indoor space, reducing the situation of local wind speed being too fast or too slow, thereby improving the temperature uniformity of the entire indoor environment, enhancing the air conditioning 1's regulation effect on the indoor space, and further optimizing the user's experience.

[0090] like Figure 4 As shown, the indoor unit 10 may also include a heat exchanger 100, which is disposed inside the housing 11 and positioned between the air inlet 11a and the air outlet 11b along the width direction of the housing 11, for heat exchange of the air entering the housing 11.

[0091] For example, in the cooling mode of air conditioner 1, the low-temperature, low-pressure refrigerant liquid evaporates and absorbs heat in the coil of heat exchanger 100, thereby lowering the temperature of the air passing through heat exchanger 100 and achieving the cooling effect of indoor air. At this time, the heat in the air is absorbed by the refrigerant, and the refrigerant changes from liquid to gaseous state. Then it is drawn into the compressor for the next cycle. In the heating mode of air conditioner 1, the high-temperature, high-pressure refrigerant gas condenses and releases heat in the coil of heat exchanger 100, transferring the heat to the air passing through heat exchanger 100 and raising the air temperature to achieve the purpose of indoor heating. In this process, the refrigerant changes from gaseous state to liquid state, and then returns to the outdoor unit for circulation after being depressurized by the throttling device.

[0092] like Figure 4 and Figure 5 As shown, the indoor unit 10 may also include a heat exchange fan 200, which is disposed inside the casing 11 to introduce air into the casing 11 from the air inlet 11a, and to form air conditioning air after heat exchange through the heat exchanger 100 and send it out from the air outlet 11b.

[0093] The heat exchange fan 200 generates airflow through its own rotation, drawing indoor air into the casing 11 through the air inlet 11a. The air then flows over the surface of the heat exchanger 100, completing the heat transfer and exchange process to form air conditioning air. Subsequently, the heat exchange fan 200 delivers the air conditioning air to various corners of the room through the air outlet 11b at a suitable wind speed and direction, realizing the functions of cooling, heating, or ventilation of the indoor air. The heat exchange fan 200 can be a centrifugal fan or a cross-flow fan. In this embodiment, the heat exchange fan 200 is preferably a cross-flow fan.

[0094] like Figure 6 As shown, the indoor unit 10 may also include a volute 300 disposed inside the housing 11. An air duct structure 310 is formed inside the volute 300. The air inlet end of the air duct structure 310 is connected to the air inlet 11a, and the air outlet end of the air duct structure 310 is connected to the air outlet 11b.

[0095] The volute 300 is located inside the casing 11 of the indoor unit 10 of the air conditioner 1. Together with the casing 11, it forms the overall frame structure of the indoor unit 10 of the air conditioner 1, providing space for the installation and operation of other components such as the heat exchanger 100 and the heat exchange fan 200. The main function of the air duct structure 310 formed inside the volute 300 is to guide and constrain the airflow path, so that the air can flow in the casing 11 in a predetermined direction and manner. This achieves a complete cycle process where the air enters from the air inlet 11a, undergoes heat exchange in the heat exchanger 100, and then flows out from the air outlet 11b, ensuring the normal operation and effective cooling and heating of the air conditioning system 1.

[0096] like Figure 5 and Figure 6 As shown, the volute 300 may include a front volute tongue 320, which is located near the air outlet end. The front volute tongue 320 has a front volute tongue guide surface 3201, which is the surface of the front volute tongue 320 facing the heat exchange fan 200.

[0097] Since the airflow blown out by the fan has a certain speed and direction, without the guidance of the front volute 320, the airflow may diffuse in a disorderly manner or have an unstable flow direction. The front volute guide surface 3201, as the surface of the front volute 320 facing the heat exchange fan 200, can rectify the airflow, making the turbulent airflow more orderly, reducing the generation of eddies and turbulence, and thus reducing airflow resistance.

[0098] like Figure 5 and Figure 6 As shown, the volute 300 may include a rear volute tongue 330, which is located near the air inlet end. The rear volute tongue 330 has a rear volute tongue guide surface 3301, which is the surface of the rear volute tongue 330 facing the heat exchange fan 200.

[0099] The rear volute tongue 330 is located near the air inlet end. Its function is to guide outdoor air smoothly into the interior of the volute 300. The rear volute tongue guide surface 3301 is the surface of the rear volute tongue 330 facing the heat exchange fan 200. It can make the air transition more smoothly to the working area of ​​the heat exchange fan 200 after entering the volute 300, reduce the degree of airflow turbulence and impact, and reduce the noise caused by unstable airflow.

[0100] like Figure 5 and Figure 6 As shown, the volute 300 may include an airflow guide 340, one end of which is connected to the end of the rear volute tongue 330 facing the air outlet, and the other end of which extends to the air outlet 11b to guide the air conditioning air out of the air outlet 11b.

[0101] like Figure 6 As shown, the airflow guide 340 may include a guide surface 3401, through which the air conditioning air flows to the air outlet 11b.

[0102] like Figure 6 and Figure 7 As shown, the airflow guide 340 may include a rectifying protrusion 3402, which protrudes from the guide surface 3401 and is located at the air outlet 11b. The surface of the rectifying protrusion 3402 away from the guide surface 3401 is the air diversion surface 3402a. The air diversion surface 3402a is configured to allow the air conditioning air flowing out along the guide surface 3401 to be discharged downward relative to the guide surface 3401 when it flows through the air diversion surface 3402a.

[0103] Thus, when the indoor unit 10 is running, the heat exchange fan 200 rotates, creating a pressure difference within the casing 11. Outdoor air is drawn in from the air inlet 11a at one end of the casing 11's width direction to the vicinity of the rear volute 330. The rear volute guide surface 3301 initially guides the airflow, causing it to enter the air duct structure 310 along the air inlet. Within the air duct structure 310, the air is propelled by the heat exchange fan 200 and passes through the heat exchanger 100 located between the air inlet 11a and the air outlet 11b, where heat exchange occurs, forming air conditioning air. The air conditioning air then flows past the vicinity of the front volute 320, where the front volute guide surface 3201 guides the airflow, making it flow more orderly towards the airflow guide 340. The air conditioning air continues to flow along the guide surface 3401 of the airflow guide 340. During this process, the direction and speed of the airflow are gradually adjusted and optimized. When the air conditioning air reaches the rectifier protrusion 3402 of the airflow guide 340 located at the air outlet 11b, the airflow direction is further changed so that the airflow is directed downward relative to the guide surface 3401 and then blown out from the air outlet 11b. Thus, throughout the entire process from the air inlet 11a to the air outlet 11b, the front volute 320, the rear volute 330, and the airflow guide 340 work together to make the airflow flow along a predetermined, relatively smooth path. For example, the rear volute 330 sorts the incoming airflow to prevent it from disorderly impacting internal components and generating noise. The guide surface 3401 of the airflow guide 340 allows the air conditioning air to transition smoothly, reducing turbulence caused by sudden changes in airflow direction or speed. Turbulence is one of the important causes of noise. By reducing turbulence, the noise caused by unstable airflow is reduced.

[0104] In addition, when the air conditioning air passes through the air intake surface 3402a, the rectifier protrusion 3402 changes the speed distribution and flow direction of the airflow at the air outlet 11b, which effectively suppresses the noise that may have been generated at the air outlet 11b due to rapid impact and irregular diffusion. This allows the airflow to leave the air outlet 11b more smoothly, avoiding high-frequency noise and eddy noise caused by uneven airflow speed and chaotic direction, as well as the adverse effects on the airflow effect, thereby improving the user experience.

[0105] In some possible embodiments, such as Figure 8 As shown, along the radial direction of the heat exchange fan 200, there is a height difference between the rear volute tongue guide surface 3301 and the guide surface 3401. The height difference causes the guide surface 3401 to be far away from the heat exchange fan 200 in the radial direction of the heat exchange fan 200 relative to the rear volute tongue guide surface 3301.

[0106] Because of the height difference along the radial direction of the heat exchange fan 200, the rear volute tongue guide surface 3301 and the guide surface 3401 are not on the same plane, thus guiding the air to flow at different height levels. This means that part of the air conditioning air blown out from the heat exchange fan 200 will flow along the rear volute tongue guide surface 3301, and the other part will flow along the guide surface 3401, which is relatively far away from the heat exchange fan 200. This avoids a large amount of air interfering with and colliding with each other on the same plane, and reduces the turbulence caused by airflow crossing and mixing.

[0107] When air is blown out from the heat exchange fan 200, if there is no height difference between the rear volute tongue guide surface 3301 and the guide surface 3401, the airflow may directly impact the guide surface 3401 or the rear volute tongue guide surface 3301 and rebound, forming turbulent airflow. However, the existence of a height difference allows the airflow to buffer and adjust its direction when it impacts the rear volute tongue guide surface 3301 or the guide surface 3401, because there is a certain space between the two surfaces. This reduces the intensity and frequency of airflow rebound, thereby reducing the turbulence caused by airflow rebound. Furthermore, the airflow near the rear volute tongue guide surface 3301 close to the heat exchange fan 200 has a relatively faster speed, while the air flowing along the guide surface 3401 has a relatively slower speed because it is slightly farther away from the heat exchange fan 200. This speed difference allows the air to transition and mix more naturally during the flow process, avoiding turbulence caused by sudden speed changes. Airflows of different speeds gradually merge in the space formed by the height difference, forming a more stable and uniform airflow field.

[0108] In addition, when air flows through the rear volute tongue guide surface 3301 and the guide surface 3401, vortices are easily formed at corners or in areas with large velocity changes. By creating a height difference between the rear volute tongue guide surface 3301 and the guide surface 3401, the guide surface 3401 is moved away from the heat exchange fan 200 in the radial direction relative to the rear volute tongue guide surface 3301. This changes the airflow trajectory and boundary conditions, allowing the air to bypass these areas that may generate vortices more smoothly, thus reducing the generation of vortices.

[0109] In some possible embodiments, such as Figure 8 As shown, the drainage surface 3402a is a curved surface that protrudes toward the heat exchange fan 200.

[0110] The convex curved surface shape allows the air conditioning air to transition smoothly when flowing over the guide surface 3402a. Compared with flat or other irregularly shaped surfaces, the curved surface can better conform to the natural flow direction of the airflow, avoiding turbulence caused by the airflow suddenly encountering obstacles or changing direction abruptly. The air conditioning air can flow naturally along the contour of the curved surface, reducing turbulence caused by sudden changes in direction and speed, thereby reducing noise caused by turbulence. When the air conditioning air impacts the guide surface 3402a, the convex curved surface can evenly distribute the pressure of the airflow. Since the angle between each point of the curved surface and the airflow is different, the force on the airflow is also different at different positions, thus avoiding pressure concentration at a certain point or area, helping to maintain the stability of the airflow, reducing airflow fluctuations and turbulence caused by uneven pressure, and thus reducing the noise generated.

[0111] Furthermore, when the airflow flows along the curved surface, the shape and curvature of the surface guide the airflow to bypass in an orderly manner, avoiding the formation of swirling vortices in local areas. By suppressing the formation of vortices, the noise caused by vortex breaking and mutual interference is reduced, making the airflow from the air conditioner 1 more stable and quiet.

[0112] The curved shape of the airflow guide surface 3402a can also optimize the velocity distribution of the airflow. At different positions on the curved surface, the velocity of the airflow will be naturally adjusted according to factors such as the curvature of the curved surface and the distance from the heat exchange fan 200. This gradual change in velocity allows the airflow to be distributed more evenly when it flows out of the airflow guide surface 3402a, avoiding turbulence caused by excessive velocity differences.

[0113] Thus, the curved airflow guide surface 3402a protruding towards the heat exchange fan 200 effectively reduces the generation of turbulence by achieving smooth airflow transition, dispersing airflow pressure, suppressing vortex formation, and optimizing airflow velocity distribution, thereby significantly reducing the air outlet noise of the air conditioner 1 and providing users with a quieter and more comfortable operating environment.

[0114] Of course, the shape of the rectifier boss is not limited to the above forms. For example, the edge of the rectifier boss can be serrated. When the airflow passes through the serrated rectifier boss, the shape of the serration will cause the airflow to generate tiny vortices. The direction and intensity of these vortices are optimized so that they can interact with the mainstream airflow and make the airflow more evenly distributed on the guide surface. Or a gradually heightened rectifier boss, whose height gradually changes from one end to the other, presents an inclined or curved shape.

[0115] In some possible embodiments, such as Figure 7 As shown, the rectifier protrusion 3402 has a protrusion height of 3mm-7mm relative to the guide surface 3401.

[0116] The rectifier protrusion 3402 has a protrusion height relative to the guide surface 3401 of [missing information]. Figure 7 The height referred to by L1.

[0117] Within this height range, the rectifier protrusion 3402 can guide the air conditioning air precisely, allowing the airflow to exit the outlet 11b more accurately in the predetermined direction. The reasonable height of the protrusion ensures that the air guiding surface 3402a can effectively change the airflow direction, making the air conditioning air stably downward, thereby improving the directionality and accuracy of the air conditioner 1 in regulating indoor air, meeting the user's needs for different air outlet angles. In addition, the appropriate protrusion height can avoid airflow deflection caused by excessive height or low height. If the protrusion height is too low, it may not be able to change the airflow direction sufficiently, causing some airflow to deviate from the expected downward air outlet direction, affecting the air outlet effect; while if the protrusion height is too high, it may cause excessive airflow deflection, generating unnecessary resistance and turbulence.

[0118] In this embodiment, the 3mm-7mm protrusion height can maintain the stability of the airflow while ensuring effective airflow deflection, reduce airflow deviation, and allow the air conditioning air to be distributed more evenly in the indoor space. This helps to suppress the generation of turbulence in the airflow, thereby reducing noise caused by turbulence. When the air conditioning air passes through the rectifier protrusion 3402, the appropriate protrusion height allows the airflow to transition smoothly on the guide surface 3402a, avoiding violent disturbances and eddies caused by sudden changes in airflow. By reducing turbulence, airflow noise is effectively reduced, creating a quieter operating environment for users.

[0119] In addition, the 3mm-7mm protrusion height allows the airflow to produce a relatively gentle collision and friction when it comes into contact with the rectifier protrusion 3402. This prevents the airflow from directly impacting other parts of the guide surface 3401 and generating excessive noise due to the protrusion height being too low, and also prevents the airflow from forming a strong impact and reflection at the protrusion due to the protrusion height being too high, thus causing additional noise. This moderate protrusion height effectively avoids the generation of airflow impact noise and further improves the quietness of the air conditioner 1 during operation.

[0120] In a preferred embodiment, the rectifier protrusion 3402 has a protrusion height of 5 mm relative to the guide surface 3401.

[0121] In one possible embodiment, such as Figure 7 As shown, along the extension direction of the guide surface 3401, the distance from the connection position of the guide surface 3402a and the guide surface 3401 to the air outlet 11b is 5mm-20mm.

[0122] The distance from the connection point between the airflow surface 3402a and the guide surface 3401 to the air outlet 11b is: Figure 7 The distance referred to by L2.

[0123] If the distance from the connection point to the air outlet 11b is too short, the airflow may directly impact the edge or surrounding structure of the air outlet 11b, generating significant noise. However, within a distance of 5mm-20mm, the airflow has sufficient space to buffer and disperse, thereby reducing airflow impact noise and further improving the noise performance of the air conditioner 1.

[0124] This distance range also provides sufficient space for the airflow to adjust its direction at the air outlet 11b. The air guide surface 3402a directs the air conditioning air downwards relative to the guide surface, and the distance from the connection point to the air outlet 11b is set between 5mm and 20mm. This allows the airflow to have an appropriate distance after passing through the air guide surface 3402a to further stabilize and adjust the air outlet angle, ensuring that the air conditioning air can be blown out of the air outlet 11b at a more precise angle that meets the design requirements. This improves the air supply effect of the air conditioner 1 to different areas of the room and meets the user's needs for different air outlet directions and ranges.

[0125] Furthermore, a suitable distance helps the air conditioning air to be distributed more evenly at the air outlet 11b. Within this distance, the airflow can gradually form a stable and orderly flow state under the action of the air intake surface 3402a, avoiding the situation where the airflow cannot be adjusted sufficiently due to the short distance, resulting in uneven local wind speed. By improving the uniformity of the air outlet, the indoor temperature can be more balanced, thus improving the comfort of the indoor environment.

[0126] In addition, after the airflow exits from the air intake surface 3402a, it can smoothly transition to the air outlet 11b within a distance of 5mm-20mm, reducing the disturbance and turbulence caused by the rapid change of airflow over a short distance, making the air conditioner 1 operate more quietly and creating a more tranquil environment for users.

[0127] In a preferred embodiment, along the extending direction of the guide surface 3401, the distance from the connection position of the guide surface 3402a and the guide surface 3401 to the air outlet 11b is 10mm.

[0128] In some possible embodiments, such as Figure 9 As shown, along the radial direction of the heat exchange fan 200, the gap between the front volute guide surface 3201 and the heat exchange fan 200 is 4mm-7.5mm.

[0129] Wherein, the gap between the front volute guide surface 3201 and the heat exchange fan 200 along the radial direction of the heat exchange fan 200 refers to the range of distances measured along the radial direction of the heat exchange fan 200 between the front volute guide surface 3201 and the hub of the heat exchange fan 200, that is, Figure 9 The gap shown in d1.

[0130] When the heat exchange fan 200 rotates, it will drive a large amount of airflow. If the gap between the front volute guide surface 3201 and the heat exchange fan 200 is too small, the airflow can easily directly impact the front volute guide surface 3201 after leaving the fan, causing a sudden change in the airflow speed and direction, thus generating turbulence. A gap of 4mm-7.5mm can provide sufficient buffer space for the airflow, allowing the airflow to gradually adjust its speed and direction after leaving the fan, avoiding direct impact on the front volute guide surface 3201 and reducing turbulence caused by impact.

[0131] Furthermore, within the gap range of this embodiment, after the airflow flows out from the heat exchange fan 200, it can form a relatively stable velocity gradient in the gap. The airflow speed is faster near the fan, while the airflow speed gradually decreases as it moves further away from the fan. This helps the airflow to transition more smoothly to the front volute tongue guide surface 3201, reducing turbulence caused by sudden velocity changes.

[0132] In addition, the gap size of 4mm-7.5mm allows the airflow to be properly constrained and guided in this area, avoiding excessive diffusion or compression of the airflow, thereby reducing the possibility of vortex generation. By suppressing the formation of vortices, the noise and energy loss caused by vortex breaking and mutual interference are reduced, improving the performance of the air conditioning system 1. This gap also provides conditions for the uniform distribution of airflow between the heat exchange fan 200 and the front volute guide surface 3201. The airflow can flow and mix more freely in this gap, allowing airflows of different speeds and directions to be fully adjusted and balanced before reaching the front volute guide surface 3201, thereby forming a more uniform airflow field. The uniform airflow distribution helps the front volute guide surface 3201 to better play its guiding role, further reducing turbulence and vortices caused by uneven airflow, and improving the stability and orderliness of the airflow within the duct structure 310.

[0133] In a preferred embodiment, such as Figure 10 As shown, the gap between the front volute guide surface 3201 and the heat exchange fan 200 along the radial direction of the heat exchange fan 200 is 6.8 mm.

[0134] In some possible embodiments, the gap between the portion of the rear volute guide surface 3301 near the air inlet end and the heat exchange fan 200 along the radial direction of the heat exchange fan 200 is 3.5mm-5.5mm.

[0135] Wherein, the gap between the portion of the rear volute tongue guide surface 3301 near the air inlet end and the heat exchange fan 200 along the radial direction of the heat exchange fan 200 refers to the range of distances measured along the radial direction of the heat exchange fan 200 between the portion of the rear volute tongue guide surface 3301 near the air inlet end and the hub of the heat exchange fan 200. That is, Figure 10The gap shown in d2.

[0136] When air enters the air inlet 11a, the 3.5mm-5.5mm gap provides a relatively stable channel for airflow, preventing disordered airflow due to excessively large gaps or airflow blockage due to excessively small gaps. This allows the airflow to approach the heat exchange fan 200 at a relatively uniform speed and direction. Within this gap, the airflow can naturally adjust and balance, reducing differences in airflow and speed at different locations. This ensures that the heat exchange fan 200 receives a relatively balanced airflow at all points, which helps improve the fan's working efficiency and avoids fan vibration and noise caused by uneven local air intake, thereby enhancing the stability and reliability of the entire air conditioning system 1.

[0137] In addition, when air enters the air inlet 11a, if the gap between the rear volute tongue guide surface 3301 and the heat exchange fan 200 is not reasonable, the airflow may directly impact the guide surface or the fan, resulting in rebound and turbulent airflow. A gap of 3.5mm-5.5mm can effectively avoid this situation, providing sufficient buffer space for the airflow, allowing the airflow to gradually decelerate and adjust its direction when approaching the guide surface and the fan, reducing the turbulence caused by airflow impact and rebound, and reducing the noise and energy loss caused by turbulence.

[0138] This gap range can also suppress the generation of vortices. If the gap is too large, the airflow is prone to disordered flow and diffusion in this area, which can easily form local swirling vortices. If the gap is too small, it will cause the airflow to be rapidly compressed and deformed in the narrow space, which can also easily induce vortices. A gap size of 3.5mm-5.5mm can keep the airflow properly constrained and guided in this area, avoiding excessive diffusion or compression of the airflow, thereby reducing the possibility of vortex generation. By suppressing the formation of vortices, the stability and uniformity of the airflow in the duct structure 310 are further improved.

[0139] In a preferred embodiment, the gap between the portion of the rear volute tongue guide surface 3301 near the air inlet end and the heat exchange fan 200 is 4.5 mm.

[0140] In some possible embodiments, such as Figure 8 As shown, the height difference is 2mm-10mm.

[0141] Among them, the above height difference is Figure 8 The height difference referred to by h1.

[0142] When the airflow is blown out from the heat exchange fan 200, due to the height difference of 2mm-10mm, the guide surface 3401 is far away from the heat exchange fan 200 relative to the volute guide surface. This provides more space for the airflow to make a smooth transition. When the airflow passes through the volute guide surface and the guide surface 3401, it can gradually adjust its speed and direction at different height levels, avoiding airflow separation caused by sudden encounter with obstacles or changes in space. The guide surface 3401 can better follow the natural flow trend of the airflow, allowing the airflow to flow orderly along its surface, reducing the separation of the airflow at corners or areas of shape change, and improving the continuity and stability of the airflow.

[0143] Furthermore, the existence of a height difference helps reduce mutual interference between airflow boundary layers at different levels. Without a height difference, when airflow flows on the same plane, the boundary layers are prone to mutual influence, causing airflow separation near the boundary layer. A height difference of 2mm-10mm allows the airflow boundary layers at different levels to develop relatively independently, reducing the degree of interference between boundary layers. This effectively suppresses airflow separation caused by boundary layer interference, allowing airflow to flow more smoothly from the heat exchange fan 200 to the air outlet 11b.

[0144] If there is no height difference or the height difference is too small, the airflow may directly impact the guide surface or guide surface 3401, forming a large pressure difference and velocity change, which can easily generate vortices near the impact point. A height difference of 2mm-10mm can avoid this situation, allowing the airflow to contact the guide surface or guide surface 3401 more gently, reducing the possibility of vortices generated by airflow impact, and reducing the noise and energy loss caused by vortices.

[0145] In some possible embodiments, such as Figure 11 As shown, the housing 11 may include a mounting base 400, on which the heat exchanger 100 and the heat exchange fan 200 are mounted, and the volute 300 is integrally formed on the mounting base 400.

[0146] like Figure 11 As shown, the housing 11 may also include a water receiving tray 500, which is disposed below the heat exchanger 100 and integrally formed on the mounting base 400, for receiving condensate on the surface of the heat exchanger 100.

[0147] Thus, the one-piece design makes the water tray 500 and the mounting base 400 a single structure. Compared with components assembled by other connection methods, its structure is more stable and can better withstand various forces during the operation of the air conditioner 1, such as vibrations caused by fan rotation and thermal expansion and contraction caused by temperature changes. It reduces problems such as loosening and deformation that may occur due to weak connections between components, thereby extending the service life of the entire indoor unit 10 of the air conditioner 1.

[0148] Furthermore, since the water receiving tray 500 and the mounting base 400 are integrally formed, the relative position and dimensional accuracy between the two can be guaranteed during the manufacturing process, ensuring a tighter and more accurate fit between the various components, which is conducive to the normal operation and performance of the air conditioning system 1.

[0149] Furthermore, the one-piece molded water tray 500 and the mounting base 400 have no connection gaps, effectively preventing the possibility of condensate leakage from the gaps. When condensate is generated on the surface of the heat exchanger 100, the condensate can flow smoothly into the water tray 500 without water leakage into other internal components of the air conditioner 1 or the indoor environment due to sealing problems at the connection points. This protects the electrical components inside the air conditioner 1 from water corrosion and improves the safety and reliability of the air conditioner 1.

[0150] In some possible embodiments, such as Figure 12 As shown, the heat exchanger 100 may include a first heat exchange section 110.

[0151] like Figure 12 As shown, the heat exchanger 100 may also include a second heat exchange section 120.

[0152] like Figure 12 As shown, the heat exchanger 100 may further include a third heat exchange section 130. The first heat exchange section 110, the second heat exchange section 120 and the third heat exchange section 130 are arranged around the outer periphery of the heat exchange fan 200 and connected in sequence. The first heat exchange section 110 and the second heat exchange section 120 have a first included angle, and the second heat exchange section 120 and the third heat exchange section 130 have a second included angle.

[0153] The angles of the first included angle and the second included angle can be selected according to actual needs, and are not limited here.

[0154] In this way, by dividing the heat exchanger 100 into three heat exchange sections and arranging them around the outer periphery of the heat exchange fan 200, the contact area between the heat exchanger 100 and the air is increased. Compared with the traditional single heat exchange structure, this multi-section design allows more air to fully contact the surface of the heat exchanger 100, thereby improving the efficiency of heat exchange. During the operation of the air conditioner 1, whether in cooling or heating mode, the heat transfer between the air and the refrigerant can be achieved more quickly, enabling the air conditioner 1 to reach the set temperature more quickly and improving the performance and energy efficiency of the air conditioner 1.

[0155] Furthermore, this arrangement around the heat exchange fan 200 fully utilizes the limited internal space of the indoor unit 10 of the air conditioner 1, maximizing the heat exchange area of ​​the heat exchanger 100 without increasing its volume excessively. The rational layout and connection between the heat exchange sections allow the heat exchanger 100 to fit tightly around the fan, effectively utilizing the space around the fan that might otherwise be unused, improving space utilization, making the structure of the indoor unit 10 of the air conditioner 1 more compact, while not affecting the normal installation and operation of other components.

[0156] The first heat exchange section 110 and the second heat exchange section 120 have a first included angle, and the second heat exchange section 120 and the third heat exchange section 130 have a second included angle. This can effectively guide and divert the airflow. When the heat exchange fan 200 rotates, air is drawn in and flows through the heat exchanger 100. Due to the existence of the first and second included angles, the airflow will be naturally distributed and flow between different heat exchange sections, avoiding local overheating or undercooling caused by the airflow concentrating in a certain area. This allows the air to contact the surface of the heat exchanger 100 more evenly, further improving the uniformity and stability of heat exchange, optimizing the airflow organization and temperature distribution in the air-conditioned room 1. Compared with the straight plate heat exchanger 100, this multi-section heat exchanger 100 with included angles can better follow the flow direction of the airflow, reducing eddies and turbulence in the flow process, thereby reducing energy loss caused by airflow resistance, improving the operating efficiency of the air-conditioned system 1, and reducing energy consumption.

[0157] In some possible embodiments, such as Figure 13 As shown, a placement area can be formed between the first heat exchange section 110, the second heat exchange section 120, the third heat exchange section 130, and the heat exchange fan 200.

[0158] like Figure 13 As shown, the indoor unit 10 may include an electric heater 600, which is disposed inside the housing and located in the placement area. The electric heater 600 is used to heat the air entering the air duct structure 310 through the air inlet.

[0159] In the air conditioning system 1, especially in cold winter environments, when the heat pump system of air conditioning 1 has insufficient heating capacity or the outdoor temperature is too low, resulting in poor heating effect, the electric heater 600 can act as an auxiliary heating device to directly heat the air entering the air duct structure 310, effectively improving the heating capacity of air conditioning 1, enabling the room to reach the set comfortable temperature more quickly, and improving the user experience in cold weather.

[0160] By placing the electric heater 600 within the placement area formed between the first heat exchange section 110, the second heat exchange section 120, the third heat exchange section 130, and the heat exchange fan 200, the internal space of the casing 11 is fully utilized. This compact layout does not affect the normal operation of major components such as the heat exchanger 100 and the heat exchange fan 200, and it can also reasonably place the electric heater 600, making the structure of the entire air conditioning system 1 more compact. This helps to reduce the size of the indoor unit 10 of the air conditioning system 1 and adapt to different installation environments and space constraints.

[0161] Furthermore, the placement area allows the electric heater 600 to directly heat the air entering the air duct structure 310. The air can quickly absorb heat and increase its temperature when passing through the electric heater 600. Moreover, since this area is close to the heat exchange fan 200, the air heated by the electric heater 600 can be mixed with other air in the air duct more quickly and evenly under the action of the fan, and then delivered to all corners of the room. This optimizes the heating effect of the airflow, improves the heating efficiency and uniformity of the air conditioning system 1, and avoids the problem of excessive indoor temperature differences caused by uneven local heating.

[0162] 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. An air conditioner, characterized in that, include: Indoor unit, including: The housing has an air inlet and an air outlet, which are respectively located at both ends of the housing in the width direction; A heat exchanger is disposed inside the housing and along the width direction of the housing, between the air inlet and the air outlet, for exchanging heat with the air entering the housing. A heat exchange fan is installed inside the housing to introduce air into the housing from the air inlet, and to send out the air conditioning air formed by the air after heat exchange through the heat exchanger from the air outlet. A volute is disposed within the housing, and an air duct structure is formed within the volute. The air inlet end of the air duct structure is connected to the air inlet, and the air outlet end of the air duct structure is connected to the air outlet. The volute includes: A front volute is disposed near the air outlet end. The front volute has a front volute guide surface, which is the surface of the front volute facing the heat exchange fan. The rear volute is located near the air inlet end and has a rear volute guide surface, which is the surface of the rear volute facing the heat exchange fan. An airflow guide, one end of which is connected to the end of the rear volute tongue facing the air outlet, and the other end of which extends to the air outlet to guide the air conditioning air out of the air outlet, the airflow guide comprising: The air conditioning air flows through the guide surface to the air outlet; A rectifier protrusion is provided on the guide surface and located at the air outlet. The surface of the rectifier protrusion away from the guide surface is a flow-guiding surface. The flow-guiding surface is configured to allow the air conditioning air flowing out along the guide surface to be discharged downward relative to the guide surface when it flows through the flow-guiding surface.

2. The air conditioner according to claim 1, characterized in that, The drainage surface is a curved surface that bulges towards the heat exchange fan.

3. The air conditioner according to claim 1, characterized in that, The rectifier protrusion has a protrusion height of 3mm-7mm relative to the guide surface.

4. The air conditioner according to claim 1, characterized in that, Along the extending direction of the guide surface, the distance from the connection point between the airflow surface and the guide surface to the air outlet is 5mm-20mm.

5. The air conditioner according to claim 1, characterized in that, Along the radial direction of the heat exchange fan, the gap between the front volute guide surface and the heat exchange fan is 4mm-7.5mm.

6. The air conditioner according to claim 1, characterized in that, Along the radial direction of the heat exchange fan, the gap between the portion of the rear volute guide surface near the air inlet end and the heat exchange fan is 3.5mm-5.5mm.

7. The air conditioner according to claim 1, characterized in that, The housing includes: Mounting base, the heat exchanger and heat exchange fan are both mounted on the mounting base, and the volute is integrally formed on the mounting base; A water collection tray is disposed below the heat exchanger and integrally formed with the mounting base, and is used to collect condensate from the surface of the heat exchanger.

8. The air conditioner according to claim 1, characterized in that, The heat exchanger includes: First heat exchange section; Second heat exchange section; The third heat exchange section, the first heat exchange section, the second heat exchange section and the third heat exchange section are arranged around the outer periphery of the heat exchange fan and connected in sequence, and the first heat exchange section and the second heat exchange section have a first included angle, and the second heat exchange section and the third heat exchange section have a second included angle.

9. An air conditioner, characterized in that, include: Indoor unit, including: The housing includes an air inlet and an air outlet, which are respectively located at both ends of the housing in the width direction; A heat exchanger is disposed inside the housing and along the width direction of the housing, between the air inlet and the air outlet, for exchanging heat with the air entering the housing. A heat exchange fan is installed inside the housing to introduce air into the housing from the air inlet, and to form air conditioning air after the air is heated by the heat exchanger and then sent out from the air outlet. A volute is disposed within the housing, and an air duct structure is formed within the volute. The air inlet end of the air duct structure is connected to the air inlet, and the air outlet end of the air duct structure is connected to the air outlet. The volute includes: A front volute is disposed near the air outlet end. The front volute has a front volute guide surface, which is the surface of the front volute facing the heat exchange fan. The rear volute is located near the air inlet end and has a rear volute guide surface, which is the surface of the rear volute facing the heat exchange fan. An airflow guide, one end of which is connected to the end of the rear volute tongue facing the air outlet, and the other end of which extends toward the air outlet to guide the air after heat exchange by the indoor heat exchanger to be sent out of the air outlet; the airflow guide includes; The air conditioning air flows through the guide surface to the air outlet; Along the radial direction of the heat exchange fan, there is a height difference between the rear volute tongue guide surface and the guide surface, the height difference causing the guide surface to be radially away from the heat exchange fan relative to the rear volute tongue guide surface.

10. The air conditioner according to claim 9, characterized in that, Along the radial direction of the heat exchange fan, the gap between the front volute guide surface and the heat exchange fan is 4mm-7.5mm.

11. The air conditioner according to claim 9, characterized in that, Along the radial direction of the heat exchange fan, the gap between the portion of the rear volute guide surface near the air inlet end and the heat exchange fan is 3.5mm-5.5mm.

12. The air conditioner according to claim 9, characterized in that, The height difference is 2mm-10mm.

13. The air conditioner according to claim 9, characterized in that, The housing includes: Mounting base, the heat exchanger and heat exchange fan are both mounted on the mounting base, and the volute is integrally formed on the mounting base; A water collection tray is disposed below the heat exchanger and integrally formed with the mounting base, and is used to collect condensate from the surface of the heat exchanger.

14. The air conditioner according to claim 9, characterized in that, The heat exchanger includes: First heat exchange section; Second heat exchange section; The third heat exchange section, the first heat exchange section, the second heat exchange section and the third heat exchange section are arranged around the outer periphery of the heat exchange fan and connected in sequence, and the first heat exchange section and the second heat exchange section have a first included angle, and the second heat exchange section and the third heat exchange section have a second included angle.

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