Heat exchanger and air conditioner indoor unit having the same

Abstract

The application provides a heat exchanger and an air conditioner indoor unit with the heat exchanger. The heat exchanger comprises an axial channel extending in a vertical direction and a heat exchange part surrounding the axial channel. Air flows through the axial channel and exchanges heat with the heat exchange part during the flow. The heat-exchanged air flows to the periphery of the heat exchanger through the heat exchange part, and the heat-exchanged air with uniform heat exchange and small temperature difference is sent to the periphery of the heat exchanger. The experience and comfort of the user are improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a heat exchanger for an indoor unit of an air conditioner. Background Technology

[0002] With the development of the times and the advancement of technology, air conditioners are becoming increasingly popular, and users have higher and higher requirements for the comfort and health of air delivery. Current air conditioner indoor units are limited by their air delivery structure, resulting in a single air delivery direction and a limited air delivery range, leading to poor air delivery comfort and a poor user experience. Summary of the Invention

[0003] In view of the above problems, the inventors have provided an air conditioner with circumferential air supply, having a plurality of air outlets arranged along the circumference of the air conditioner. In order to adapt to this novel air conditioner, the present invention is proposed to provide a heat exchanger and an air conditioner.

[0004] Specifically, the present invention provides a heat exchanger including a axial channel extending in a vertical direction and a heat exchange portion surrounding the axial channel, such that airflow first enters the axial channel and then flows out from the heat exchange portion.

[0005] Optionally, the axial channel extends through the heat exchange section.

[0006] Optionally, a plurality of grooves extending vertically are uniformly provided on the outer peripheral surface of the heat exchange section to form an annular portion and a plurality of protrusions extending vertically connected to the annular portion.

[0007] Optionally, the heat exchange section includes a plurality of horizontally arranged fins, which are arranged sequentially along the axial direction of the heat exchanger. Each fin has a through hole in the middle and a plurality of notches on the outer edge of each fin to form the axial channel, the groove, the annular portion and the protrusion.

[0008] Optionally, the heat exchange section further includes heat exchange tubes inserted through the plurality of fins;

[0009] The heat exchange tubes form one or more heat exchange paths;

[0010] Each heat exchange flow path includes multiple flow path segments, which are evenly distributed on the heat exchange section along the circumferential direction of the heat exchange section.

[0011] Optionally, each of the flow segments includes a first flow segment, and each first flow segment is disposed on one of the protrusions;

[0012] Each flow path segment further includes a second flow path segment, and a plurality of second flow path segments of each flow path segment are evenly arranged on the annular portion.

[0013] Optionally, each of the heat exchange flow paths is provided with a fluid inlet and a fluid outlet;

[0014] The fluid inlet is located at the lower end of one of the first flow paths;

[0015] The fluid outlet is located at the lower end of one of the second flow sections;

[0016] The first and second flow segments of each heat exchange flow path are sequentially and alternately connected along the circumferential direction of the heat exchange section.

[0017] Optionally, the fluid inlet is connected to a fluid inflow pipe, and the fluid outlet is connected to a fluid outflow pipe, wherein the fluid inflow pipe is provided with a first shut-off valve;

[0018] The fluid outlet pipe is equipped with a second shut-off valve.

[0019] Furthermore, the present invention also provides an indoor air conditioning unit, comprising:

[0020] A housing, wherein an air outlet is provided on the housing and the air outlet extends along the length direction of the housing;

[0021] The heat exchanger according to any one of claims 1 to 7, wherein the heat exchanger is located within the housing and the extension direction of the heat exchanger is aligned with that of the air outlet.

[0022] Optionally,

[0023] It also includes an air inlet, which is connected to the air intake space;

[0024] The air inlet is located at one end of the housing;

[0025] The air inlet is coaxial with the air intake space.

[0026] Airflow passes through the central channel, exchanging heat with the heat exchange section during its flow. The heat-exchanged airflow then flows through the heat exchange section to the outer periphery of the heat exchanger. The heat exchanger itself provides airflow channels, facilitating thorough heat exchange with the airflow passing through these channels, delivering uniformly heated air with minimal temperature differences to the periphery of the heat exchanger. This improves user experience and comfort. With central air intake and peripheral air outlets, heat exchange is possible at any circumferential outlet, meeting circumferential airflow requirements.

[0027] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0028] The following sections will describe some specific embodiments of the invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0029] Figure 1 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic structural diagram of a heat exchange flow path in a heat exchanger according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic cross-sectional view of an indoor air conditioner unit according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of an indoor air conditioner unit according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of an indoor air conditioning unit according to an embodiment of the present invention. Detailed Implementation

[0034] The following reference Figures 1 to 5 This invention describes a heat exchanger and an indoor air conditioning unit equipped with the heat exchanger according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0035] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Figure 1 This is a schematic diagram of the structure of a heat exchanger according to an embodiment of the present invention, as shown below. Figure 1 As shown, and with reference Figure 2 This invention provides a heat exchanger 1000. The heat exchanger 1000 includes a axial channel 1200 extending in a vertical direction and a heat exchange portion 1100 surrounding the axial channel 1200.

[0039] In this embodiment, the airflow flows through the axial channel 1200 and exchanges heat with the heat exchange section 1100 during the flow. The heat-exchanged airflow then flows through the heat exchange section 1100 to the outer periphery of the heat exchanger 1000. The heat exchanger 1000 fully exchanges heat with the airflow flowing into the axial channel 1200, delivering uniformly heated air with a small temperature difference to the periphery of the heat exchanger 1000. This improves the user experience and comfort.

[0040] In some embodiments of the present invention, the axial channel 1200 extends through the heat exchange section 1100. In this embodiment, the airflow enters from one end of the heat exchanger 1000, flows through the axial channel 1200 to the other end of the heat exchanger 1000, so that the entire axial length of the heat exchanger 1000 participates in heat exchange, thereby improving heat exchange efficiency. This also facilitates air intake.

[0041] Specifically, the axial channel 1200 can be of any shape, including but not limited to circles, squares, and regular polygons, but preferably circles. When set to a circle, the airflow experiences less resistance as it passes through the axial channel 1200.

[0042] In some embodiments of the present invention, a plurality of grooves 1120 extending in the vertical direction are uniformly provided on the outer peripheral surface of the heat exchange portion 1100 to form an annular portion and a plurality of protrusions 1110 extending in the vertical direction connected to the annular portion.

[0043] In some embodiments of the present invention, the heat exchange section 1100 may be composed of multiple parts connected in sequence. Of course, the heat exchange section 1100 may also be a single integral structure.

[0044] In some embodiments of the present invention, the heat exchange section 1100 includes a plurality of vertically arranged fins 1130, which are sequentially connected to form the heat exchange section 1100 and the axial channel 1200 located in the area enclosed by the heat exchange section 1100.

[0045] In some embodiments of the present invention, the heat exchange section 1100 includes a plurality of horizontally arranged fins 1130, which are arranged sequentially along the axial direction of the heat exchanger 1000. Each fin 1130 has a through hole in the middle to form an axial channel 1200.

[0046] In this embodiment, the structure and arrangement of the fins 1130 enable the airflow to flow into all the axial channels 1200, and after flowing into the gaps between the fins 1130, it will not affect the airflow on the upper and lower sides, thereby improving the heat exchange performance and heat exchange efficiency.

[0047] In some embodiments of the invention, each fin 1130 has a plurality of notches on its outer edge to form a groove 1120, an annular portion, and a protrusion 1110. In particular, the number of notches is at least two. For example, three, four, eight, etc., preferably an even number.

[0048] In some embodiments of the present invention, the heat exchange section 1100 further includes a heat exchange tube 1140 inserted through a plurality of fins 1130. In this embodiment, the medium flows in the heat exchange tube 1140 to achieve heat exchange with the airflow and the fins 1130.

[0049] In some embodiments of the present invention, the heat exchange tube 1140 forms one or more heat exchange flow paths. Each heat exchange flow path includes multiple flow segments, which are evenly distributed on the heat exchange section 1100 along the circumferential direction. The heat exchanger 1000 provides uniform heat exchange.

[0050] In some embodiments of the present invention, each flow segment includes a first flow segment, each first flow segment being disposed on a protrusion 1110. Each flow segment also includes a second flow segment, and a plurality of second flow segments of each flow segment are evenly arranged on the annular portion.

[0051] Specifically, the number of first flow segments and the number of second flow segments are at least the same as the number of notches in fin 1130, or they can be an integer multiple of the number of notches in fin 1130, so that the first flow segments are evenly distributed on the protrusion 1110 and the second flow segments are evenly distributed in the annular portion.

[0052] In some embodiments of the present invention, each heat exchange flow path is provided with a fluid inlet and a fluid outlet. The fluid inlet is located at the lower end port of a first flow path. The fluid outlet is located at the lower end port of a second flow path. The first and second flow paths of each heat exchange flow path are sequentially and alternately connected along the circumferential direction of the heat exchange portion 1100. In particular, the fluid inlet and fluid outlet are located at adjacent annular portions and protrusions 1110.

[0053] In this embodiment, the heat exchange tube 1140 near the fluid inlet is the starting tube segment, and the heat exchange tube 1140 near the fluid outlet is the ending tube segment.

[0054] In some embodiments of the present invention, each heat exchange flow path is connected to a fluid inlet pipe 1150 and a fluid outlet pipe 1160. The fluid inlet pipe 1150 is provided with a first shut-off valve and / or the fluid outlet pipe 1160 is provided with a second shut-off valve.

[0055] In this embodiment, each heat exchange tube 1140 is equipped with a shut-off valve, which can independently control the on / off state of each heat exchange tube 1140. This facilitates control over the cooling capacity.

[0056] like Figure 5 As shown, and with reference Figure 3 and Figure 4 The present invention also provides an indoor air conditioning unit, including a housing. An air outlet is provided on the housing, extending along the length of the housing. The indoor air conditioning unit also includes a heat exchanger as described in any of the above embodiments, the heat exchanger being located inside the housing, and the extension direction of the heat exchanger being aligned with that of the air outlet.

[0057] In this embodiment, the heat exchanger 1000 can cool or heat according to the ambient temperature and user needs. The heat exchange air flows out of the housing 3100 through the air outlet, providing the user with the cold or hot air they need to meet their needs.

[0058] In some embodiments of the present invention, the heat exchanger 1000 extends in a vertical direction and the length of the heat exchanger 1000 is greater than the length of the air outlet.

[0059] In this embodiment, the length of the heat exchanger 1000 is set to ensure more thorough heat exchange after the external airflow enters the housing 3100.

[0060] In some embodiments of the present invention, the length of the heat exchanger 1000 is less than the length of the air outlet, which may cause some airflow to flow out of the air outlet without heat exchange. That is, the airflow flowing out of the air outlet is a mixture of heat-exchanged air and non-heat-exchanged air, which makes the user feel more comfortable.

[0061] In some embodiments of the present invention, the housing 3100 is provided with at least three air outlets, and the angle between any two adjacent air outlets is no greater than 130°. The indoor unit of the air conditioner also includes an air supply device 2000, and multiple air supply devices 2000 are provided corresponding to each air outlet to enable the indoor unit of the air conditioner to provide 360° air supply, and the wind speed and flow rate are controllable.

[0062] In some embodiments of the present invention, a damper or other sealing device may be provided at each air outlet, and when the air supply device 2000 stops working, the corresponding air outlet can be closed by the sealing device.

[0063] In some embodiments of the present invention, the air supply device 2000 is disposed on the side of the heat exchange section 1100 away from the axial channel 1200.

[0064] In this embodiment, external airflow flows into the axial channel 1200 formed by the heat exchange section 1100, exchanges heat with the heat exchange section 1100, and then flows out through the air outlet under the drive of the air supply device 2000. This can reduce air supply resistance and improve heat exchange efficiency. Of course, in some embodiments of the present invention, the air supply device 2000 can also be disposed within the axial channel 1200 of the heat exchanger 1000. The structure is compact.

[0065] In some embodiments of the present invention, the air supply device 2000 is located between the heat exchange section 1100 and the air outlet.

[0066] In some embodiments of the present invention, the air supply device 2000 is partially disposed within the groove 1120.

[0067] In this embodiment, the air supply device 2000 is disposed within the receiving space formed by the groove 1120 and the air outlet. Part of the air supply device 2000 is within the groove 1120, with the protruding portion facing the corresponding air outlet. This makes the overall indoor unit of the air conditioner more compact. In this embodiment, when the indoor unit of the air conditioner is running, multiple air supply devices 2000 are activated simultaneously. The airflow within the housing 3100 flows out of the housing 3100 through the air outlet, allowing multiple air outlets to supply air simultaneously, achieving 360° airflow to the space. This solves the problems of single airflow direction and limited airflow range in the prior art, meeting people's requirements for comfortable airflow.

[0068] Of course, multiple air supply devices 2000 can also work at different times, that is, some air supply devices 2000 can stop working, and the air outlet corresponding to the closed air supply device 2000 can still have the function of air intake.

[0069] Specifically, some air supply devices 2000 are closed, while the rest are open. The air outlets corresponding to the open air supply devices 2000 transmit the airflow inside the housing 3100 to the outside, creating a negative pressure inside the housing 3100. At this time, the air outlets corresponding to the closed air supply devices 2000 can act as air intake channels, introducing airflow from outside the housing 3100 into the housing 3100. This increases the air intake volume inside the housing 3100, thereby increasing the airflow output from the open air outlets of the corresponding air supply devices 2000.

[0070] In some embodiments of the present invention, the air supply device 2000 is a vertically arranged cross-flow fan.

[0071] In this embodiment, the air supply device 2000 is selected with a cross-flow fan whose axial length is not limited, which can increase the air supply distance, avoid turbulence, and make the heat exchange air flowing out of the air outlet uniform, resulting in a better user experience.

[0072] In some embodiments of the present invention, the impeller of the cross-flow fan and the air inlet of the air duct are located in the groove 1120, and the air outlet of the cross-flow fan is connected to the edge of the air outlet.

[0073] In other words, each air outlet and its corresponding recess 1120 are connected by a duct body that defines the airflow path. For example, the duct body can be the volute and volute tongue of a cross-flow fan.

[0074] In some embodiments of the present invention, the duct body extends from the two vertical edges of the air outlet into the housing 3100. The duct body and the housing 3100 are integrally formed, which makes the duct structure simple, easy to manufacture, and compact, and is particularly suitable for air conditioners with multiple air outlets in the circumferential direction that can achieve circumferential air supply.

[0075] In some embodiments of the present invention, each air outlet and its corresponding recess 1120 are separated by a duct body defining an air outlet path. Multiple duct bodies are spaced apart, and the air supply device 2000 is located within the ducts. A protrusion 1110 between two recesses 1120 of the heat exchanger 1000 is inserted into the gap between two adjacent duct bodies. This optimized arrangement results in a more compact structure.

[0076] In some embodiments of the present invention, the air duct body includes a vertically arranged first air duct wall and a second air duct wall. The end of the first air duct wall away from the air outlet is inserted into the groove 1120. The end of the second air duct wall away from the air outlet contacts the end of the protrusion 1110 near the air outlet.

[0077] In this embodiment, the first air duct wall and the second air duct wall are configured such that the first air duct wall functions as a volute and the second air duct wall functions as a volute tongue, thus forming a volute structure in the air duct body. This increases the stability of air delivery.

[0078] Of course, in some embodiments of the present invention, the end of the first air duct wall furthest from the air outlet is inserted into the groove 1120, and the end of the second air duct wall furthest from the air outlet is also inserted into the groove 1120. The depth to which the first air duct wall is inserted into the groove 1120 is greater than the depth to which the second air duct wall is inserted into the groove 1120. This also ensures the stability of the air supply.

[0079] In some embodiments of the present invention, the indoor unit of the air conditioner further includes an air inlet. The air inlet is coaxial with the central channel 1200.

[0080] In this embodiment, the air inlet and the heat exchanger 1000 form a coaxial channel 1200, facilitating the flow of external airflow into the channel 1200 through the air inlet. Further, in some embodiments of the invention, the air inlet may be located at the bottom of the housing 3100. In some embodiments of the invention, the air inlet may be located at the top of the housing 3100.

[0081] In the above embodiment, the air inlet is located at the top of the housing 3100, which is beneficial in the cooling mode, allowing the upper hot air to enter the interior of the housing 3100 through the air inlet and exchange heat with the heat exchanger 1000, thereby improving the cooling effect.

[0082] Of course, the air inlet is located at the bottom of the housing 3100, which is beneficial for the cold air at the bottom of the environment to enter the interior of the housing 3100 through the air inlet in the heating mode and exchange heat with the heat exchanger 1000, thereby improving the heating effect.

[0083] In some embodiments of the present invention, the housing 3100 can be of various shapes, including but not limited to circular and elliptical. This arrangement makes the appearance of the housing 3100 more streamlined.

[0084] In some embodiments of the present invention, the housing 3100 is composed of multiple arc-shaped plates connected in sequence, forming a petal shape. In this embodiment, the housing 3100 is more aesthetically pleasing.

[0085] Furthermore, in some embodiments of the present invention, the distance from the farthest point of each arc-shaped plate to the axis is equal, meaning that the farthest point of the petals formed by the arc-shaped plates lies on the circumference of a large circle. The point closest to the axis also lies on the circumference of a small circle. It should be noted that multiple arc-shaped plates do not mean that each arc-shaped plate must be manufactured separately and then assembled. The entire housing 3100 can also be integrally molded, only appearing similar to the splicing of arc-shaped plates.

[0086] In some embodiments of the present invention, each arc-shaped plate is provided with at least one air outlet. Of course, one air outlet is preferred, and the air outlet can be located on the arc-shaped plate at the furthest point from the axis. In this embodiment, the arrangement of multiple arc-shaped plates, compared to a single cylindrical housing 3100, allows the airflow within the housing 3100 to exit at a larger angle from the air outlet, which is more conducive to 360° full-coverage air supply.

[0087] In some embodiments of the present invention, each arc-shaped plate has a horizontally arranged support rod at its upper end, the support being located on the upper rear side of the air outlet, and the support rod being parallel to the plane of the air outlet. In this embodiment, a filter device 4000 can be installed on the support rod.

[0088] In some embodiments of the present invention, the housing structure 3000 further includes a cover plate 3300, which is disposed at one end of the housing 3100 and has the aforementioned air inlet so that external airflow enters the interior of the housing 3100 through the air inlet.

[0089] In some embodiments of the present invention, a filter screen may be provided on the cover plate 3300. In this embodiment, before the air enters the interior of the housing 3100 through the air inlet, it needs to be filtered by the filter screen to block particulate impurities in the air and prevent them from entering the interior of the housing 3100 and affecting the normal operation of the housing 3100.

[0090] In some embodiments of the present invention, the top-view peripheral structure of the cover plate 3300 may not be consistent with that of the housing 3100. Of course, in some embodiments of the present invention, the top-view peripheral structure of the cover plate 3300 may also be consistent with that of the housing 3100. When the peripheral structure of the cover plate 3300 is consistent with that of the housing 3100, the connection is natural, reducing gaps.

[0091] In some embodiments of the present invention, the housing structure 3000 further includes a mounting base 3200, which is located at the other end of the housing 3100 and connected to the housing 3100.

[0092] The mounting base 3200 is positioned depending on the mounting position of the cover plate 3300, which are located at different ends of the housing 3100. That is, when the cover plate 3300 is located at the upper end of the housing 3100, the mounting base 3200 is located at the lower end of the housing 3100; when the cover plate 3300 is located at the lower end of the housing 3100, the mounting base 3200 is located at the upper end of the housing 3100.

[0093] In this embodiment, the mounting base 3200 can provide mounting support and / or accommodating space.

[0094] In some embodiments of the present invention, the mounting base 3200 provides a receiving space. Specifically, the mounting base 3200 is provided with a motor mounting cavity corresponding to the cross-flow fan. In this embodiment, the mounting base 3200 is provided with a motor mounting cavity to accommodate the motor of the cross-flow fan.

[0095] In some embodiments of the present invention, the mounting base 3200 is further provided with a plurality of heat exchanger 1000 mounting slots located between every two adjacent motor mounting cavities. In this embodiment, there are multiple mounting slots, which together provide mounting space for the heat exchanger 1000 to keep the heat exchanger 1000 in a stable state. Specifically, the mounting base includes two vertical clamping plates, a vertical support plate, and a horizontal support flange arranged at intervals. The vertical support plate is disposed between the two vertical clamping plates and connected to the two vertical clamping plates. The vertical support plate is perpendicular to the vertical clamping plates. The horizontal support flange is connected to the upper end of the vertical support plate, so that the two vertical clamping plates and the horizontal support flange define the heat exchanger 1000 mounting slots.

[0096] In some embodiments of the present invention, the mounting base 3200 is further provided with a control device mounting cavity. The mounting cavity provides mounting space for the control module, so that the control module is fixed within the mounting base 3200. Further, the control device mounting cavity is located in the middle of the mounting base 3200.

[0097] In some embodiments of the present invention, the indoor unit of the air conditioner further includes a filter device 4000. The filter device 4000 is disposed inside the housing 3100, and has a first position and a second position. In the first position, the filter device 4000 blocks the air outlet; in the second position, the filter device 4000 does not block the air outlet.

[0098] In this embodiment, when the air supply device 2000 is operating and the corresponding air outlet delivers airflow from inside the housing 3100 to the outside of the housing 3100, the corresponding filter device 4000 is in the second position, not obstructing the air outlet, allowing airflow from inside the housing 3100 to flow out unimpeded through the air outlet. When the air supply device 2000 stops operating, the corresponding filter device 4000 is in the first position, obstructing the air outlet to prevent foreign objects from entering the housing 3100. When the air supply device 2000 stops operating and the corresponding air outlet acts as an air inlet, delivering airflow from outside the housing 3100 to the inside of the housing 3100, the corresponding filter device 4000 is in the first position, obstructing the air outlet.

[0099] In some embodiments of the present invention, the filter device 4000 of the air conditioner indoor unit includes a support member and a filter screen, with the support member connected to the upper end of the filter screen. It also includes a counterweight disposed at the lower end of the filter screen to keep the filter screen in an extended state under the weight of the counterweight.

[0100] In this embodiment, when the filter screen is in the extended state, the weight of the counterweight helps maintain its extended state, making it less susceptible to change due to external forces. The counterweight further enhances the stability of its extended state.

[0101] In some embodiments of the present invention, the filter device 4000 further includes a driving device for driving the support member to unwind or rewind the filter screen, so that the filter device 4000 switches between a first position and a second position.

[0102] In this embodiment, the drive device is activated, causing the support member to rotate, which in turn causes the filter screen to rotate, thereby realizing the winding or unwinding of the filter screen device 4000. The drive device makes the position switching operation of the filter screen device 4000 simple.

[0103] In some embodiments of the present invention, the number of filter devices 4000 is the same as the number of air outlets, so that each air outlet can be either blocked or open.

[0104] In some embodiments of the present invention, the indoor unit of the air conditioner further includes a detection module, a memory, and a processor. Multiple detection modules are respectively disposed above each air outlet to detect whether a user is present within a preset range in front of the air outlet. The processor calculates the distance between the user's position and the air outlet. When the distance is greater than a first preset value and less than a second preset value, the speed of the air outlet is reduced according to the distance. When the distance is less than or equal to the first preset value, the air outlet stops emitting air. Simultaneously, one or more air outlets farthest from the current air outlet are accelerated. If acceleration of the one or more air outlets farthest from the current air outlet is permitted, each air outlet is accelerated. If partial acceleration is permitted, the partially permitted air outlets are accelerated. If all acceleration is not permitted, none are accelerated.

[0105] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A housing, wherein an air outlet is provided on the housing and the air outlet extends along the length direction of the housing; A heat exchanger is located inside the housing, and its extension direction is aligned with that of the air outlet. The heat exchanger includes a vertically extending axial channel and a heat exchange portion surrounding the axial channel, such that airflow first enters the axial channel and then flows out from the heat exchange portion. The axial channel passes through the heat exchange portion. Multiple vertically extending grooves are uniformly arranged on the outer circumferential surface of the heat exchange portion to form an annular portion and multiple vertically extending protrusions connected to the annular portion. The grooves correspond to the air outlet. An air supply device is disposed within the receiving space formed by the groove and the housing.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The heat exchange section includes a plurality of horizontally arranged fins, which are arranged sequentially along the axial direction of the heat exchanger. Each fin has a through hole in the middle and a plurality of notches on the outer edge of each fin to form the axial channel, the groove, the annular portion and the protrusion.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The heat exchange section also includes heat exchange tubes inserted through the plurality of fins; The heat exchange tubes form one or more heat exchange paths; Each heat exchange flow path includes multiple flow path segments, which are evenly distributed on the heat exchange section along the circumferential direction of the heat exchange section.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, Each of the flow segments includes a first flow segment, and each first flow segment is disposed on one of the protrusions; Each flow path segment further includes a second flow path segment, and a plurality of second flow path segments of each flow path segment are evenly arranged on the annular portion.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, Each of the heat exchange flow paths is provided with a fluid inlet and a fluid outlet; The fluid inlet is located at the lower end of one of the first flow paths; The fluid outlet is located at the lower end of one of the second flow sections; The first and second flow segments of each heat exchange flow path are sequentially and alternately connected along the circumferential direction of the heat exchange section.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The fluid inlet is connected to a fluid inlet pipe, and the fluid outlet is connected to a fluid outlet pipe. The fluid inlet pipe is equipped with a first shut-off valve. The fluid outlet pipe is equipped with a second shut-off valve.

7. The indoor unit of the air conditioner according to claim 1, characterized in that, It also includes an air inlet, which is connected to the air intake space; The air inlet is located at one end of the housing; The air inlet is coaxial with the air intake space.

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