Ducted air conditioner

Abstract

The application relates to a ducted air conditioner. The ducted air conditioner comprises a casing, a heat exchanger, a fan and a partition. The casing is provided with an air duct, and the casing is provided with an air outlet and an air inlet which are respectively connected with the air duct. The air outlet is located at one end of the casing. The heat exchanger and the fan are arranged in the air duct. The fan is located at the side of the heat exchanger away from the air outlet, and the air outlet of the fan faces the heat exchanger. The partition comprises a first end and a second end. The first end is arranged at the lower edge of the air outlet, and the second end is arranged at the inner wall of the casing. The partition is located between the heat exchanger and the fan. The first end is located above the second end, and the distance between the first end and the end of the heat exchanger in the length direction is greater than the distance between the second end and the end of the heat exchanger in the length direction. The technical scheme can solve the problem that the distance between the heat exchanger and the volute is too close, resulting in poor heat exchange uniformity and low heat exchange efficiency.

Description

Technical Field

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

[0002] Ductless air conditioners are a common type of air conditioning unit. They consist of a return air chamber and an outlet air chamber separated by partitions. The return air chamber contains a volute and a fan, while the outlet air chamber contains a heat exchanger. In some cases, the size of the outlet air chamber is reduced by shortening the distance between the heat exchanger and the volute, thus reducing the overall size and weight of the unit and improving installation flexibility. However, if the distance between the heat exchanger and the volute is too close, the air blown by the fan cannot be fully diffused throughout the heat exchanger after passing through the volute, resulting in poor heat exchange uniformity and low heat exchange efficiency. Utility Model Content

[0003] This application provides a ducted air conditioner and an air conditioner to solve the problem of poor heat exchange uniformity and low heat exchange efficiency caused by the close distance between the heat exchanger and the volute in existing ducted air conditioners.

[0004] In a first aspect, this application provides an air conditioner, comprising:

[0005] The housing has an air duct inside and an air outlet and an air inlet connected to the air duct respectively. The air outlet is located at one end of the housing.

[0006] The heat exchanger is installed inside the air duct;

[0007] A fan, disposed within the air duct and located on the side of the heat exchanger away from the air outlet, has its exhaust port facing the heat exchanger to guide the airflow from the air inlet to the heat exchanger; and

[0008] A partition plate includes a first end and a second end, the first end being disposed at the lower edge of the exhaust port and the second end being disposed on the inner wall of the housing, the partition plate being located between the heat exchanger and the fan;

[0009] The partition has a first angle between its extension direction and its height direction, and the first end is located above the second end. The distance between the first end and the end of the heat exchanger in the length direction is greater than the distance between the second end and the end of the heat exchanger in the length direction.

[0010] In some embodiments, the first included angle is greater than or equal to 10° and less than or equal to 20°.

[0011] In some embodiments, the fan includes:

[0012] The volute, wherein the exhaust port is disposed on the volute; and

[0013] The volute tongue includes a volute tongue head end and a volute tongue tail end. The volute tongue head end is connected to the lower edge of the exhaust port. The volute tongue is arc-shaped and the center of curvature is located below the exhaust port. The tangent direction of the volute tongue tail end is inclined downward.

[0014] The first end is disposed on the volute tongue.

[0015] In some embodiments, the tangent direction at the end of the cochlear tongue forms a second angle with the height direction, and the second angle is greater than the first angle.

[0016] In some embodiments, the difference between the second included angle and the first included angle is greater than or equal to 40° and less than or equal to 50°.

[0017] In some embodiments, the partition and the end of the heat exchanger have a preset distance in a direction perpendicular to the extension of the partition, the preset distance being greater than or equal to 10 mm and less than or equal to 20 mm.

[0018] In some embodiments, the opening height of the exhaust vent is greater than or equal to 70 mm and less than or equal to 100 mm.

[0019] In some embodiments, the first end is provided with a support member, the support member comprising:

[0020] A support segment, the upper surface of which is shaped to match the lower surface of the volute tongue;

[0021] The transition section is connected at one end to the support section and at the other end to the first end, and the transition section abuts against the end of the volute tongue.

[0022] In some embodiments, a transition slope is provided at the connection between the transition segment and the first end, and the transition slope has a third angle with the height direction; wherein, the third angle is equal to the second angle, and the extension line of the transition slope is collinear with the tangent at the end of the volute tongue.

[0023] Secondly, this application provides an air conditioner, including a ducted air conditioner as described in the first aspect.

[0024] The technical solutions provided in this application have the following advantages compared with the prior art:

[0025] The air conditioner provided in this application embodiment, by setting the first end above the second end, and the distance in the length direction between the first end and the end of the heat exchanger being greater than the distance in the length direction between the second end and the end of the heat exchanger, defines the baffle as a downwardly inclined guiding structure. When the airflow is blown out from the exhaust port, it is guided by the baffle to the middle and lower part of the heat exchanger, so that the airflow flows to the heat exchanger more orderly, avoiding the airflow gap in the middle and lower part of the heat exchanger due to poor diffusion, thereby effectively improving the heat exchange uniformity. At the same time, the guided airflow can make more full contact with all parts of the heat exchanger, increasing the contact area and time of heat exchange, significantly improving the heat exchange efficiency, and thus enhancing the cooling or heating capacity of the duct air conditioner. In summary, this application can maintain the advantages of small overall size, light weight, and flexible installation of the duct air conditioner while ensuring improved heat exchange performance, without increasing the size of the air outlet cavity, thus taking into account both structural optimization and performance improvement. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0029] Figure 1 A sectional view of the ductwork unit provided in the embodiment of this application in the front view direction;

[0030] Figure 2 A schematic diagram illustrating the interaction between the volute tongue and the septum provided in an embodiment of this application;

[0031] Figure 3 The dimensional drawing of the ductwork unit provided in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the vacuum region provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Housing; 110. Air duct; 120. Air outlet;

[0035] 20. Heat exchanger;

[0036] 30. Fan; 310. Exhaust vent; 320. Volute;

[0037] 40. Partition;

[0038] 50. Support component; 510. Support section; 520. Transition section; 5201. Transition slope. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.

[0040] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0041] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0042] Ductless air conditioners are a common type of air conditioning unit. They consist of a return air chamber and an outlet air chamber separated by partitions. The return air chamber contains a volute and a fan, while the outlet air chamber contains a heat exchanger. In some cases, the size of the outlet air chamber is reduced by shortening the distance between the heat exchanger and the volute, thus reducing the overall size and weight of the unit and improving installation flexibility. However, if the distance between the heat exchanger and the volute is too close, the air blown by the fan cannot be fully diffused throughout the heat exchanger after passing through the volute, resulting in poor heat exchange uniformity and low heat exchange efficiency.

[0043] In response to the above technical problems, such as Figure 1 As shown, this application provides a ducted air conditioner, including a housing 10, a heat exchanger 20, a fan 30, and a partition 40. An air duct 110 is disposed within the housing 10, and the housing 10 has an air outlet 120 and an air inlet respectively connected to the air duct 110. The air outlet 120 is located on one side of the housing 10. The heat exchanger 20 is disposed within the air duct 110. The fan 30 is disposed within the air duct 110 and located at the end of the heat exchanger 20 furthest from the air outlet 120. The exhaust port 310 of the fan 30 faces the heat exchanger. The device 20 guides the airflow from the air inlet to the heat exchanger 20; the baffle 40 includes a first end and a second end, the first end is disposed at the lower edge of the air outlet 310 and the second end is disposed on the inner wall of the housing 10, and the baffle 40 is located between the heat exchanger 20 and the fan 30; wherein, the extension direction of the baffle 40 has a first angle with the height direction, and the first end is located above the second end, and the distance between the first end and the end of the heat exchanger 20 in the length direction is greater than the distance between the second end and the end of the heat exchanger 20 in the length direction.

[0044] As can be seen from the above, by setting the first end above the second end, and the distance in the length direction between the first end and the end of the heat exchanger 20 is greater than the distance in the length direction between the second end and the end of the heat exchanger 20, the baffle 40 is defined as a downwardly inclined guiding structure. When the airflow is blown out from the exhaust port 310, it is guided by the baffle 40 to the middle and lower part of the heat exchanger 20, so that the airflow flows to the heat exchanger 20 in a more orderly manner, avoiding the airflow gap in the middle and lower part of the heat exchanger 20 due to poor diffusion, thereby effectively improving the heat exchange uniformity. At the same time, the guided airflow can contact all parts of the heat exchanger 20 more fully, increasing the contact area and time of heat exchange, significantly improving the heat exchange efficiency, and thus enhancing the cooling or heating capacity of the duct air conditioner. In summary, this application can maintain the advantages of small overall size, light weight, and flexible installation of the duct air conditioner while ensuring improved heat exchange performance, without increasing the size of the air outlet cavity, thus taking into account both structural optimization and performance improvement.

[0045] It should be noted that, as Figure 1 As shown, the height direction is parallel to the Z direction, and the length direction is parallel to the X direction.

[0046] It should also be noted that, such as Figure 1 As shown, the air inlet can be located at the end of the casing 10 away from the air outlet 120; the heat exchanger 20 is a V-shaped heat exchanger, with the tip of the V-shaped heat exchanger facing the air outlet 120. By using a V-shaped heat exchanger, the heat exchange area can be increased and the heat exchange efficiency can be improved; the V-shaped heat exchanger consists of two sets of finned tubes arranged in a V shape at a certain angle. The two sets of finned tubes can be symmetrical or asymmetrical, and this application does not impose any specific restrictions; in addition, the fan 30 and the natural downward flow of air can ensure the heat exchange uniformity and heat exchange efficiency of the upper heat exchanger 20. The heat exchanger 20 is usually in an "unloaded state" due to the lack of airflow. Therefore, for the V-shaped heat exchanger, the end of the heat exchanger 20 refers to the end of the lower finned tube.

[0047] It should also be noted that, such as Figure 1 , Figure 3 As shown, the first included angle is λ, the distance between the first end and the end of the heat exchanger 20 in the length direction is L1, and the distance between the second end and the end of the heat exchanger 20 in the length direction is L2, where L1 > L2.

[0048] It should also be noted that the ducted air conditioner also includes a water collection tray installed inside the casing 10 and located below the heat exchanger 20, through which condensate is collected and discharged.

[0049] It should also be noted that the second end is connected to the inner wall of the housing 10 by means of welding or fastener connection, among other things.

[0050] In some embodiments, the first included angle is greater than or equal to 10° and less than or equal to 20°.

[0051] By setting the angle of the first included angle, the airflow diffusion speed is ensured while also ensuring that the airflow can gradually diffuse and cover the entire area of ​​the heat exchanger 20 in a slow and gradual manner, ensuring uniform airflow intensity in each area. On the one hand, it avoids the first included angle being too small, which would restrict the airflow diffusion range, causing the airflow to concentrate in the upper and middle areas of the heat exchanger 20, while the lower area of ​​the heat exchanger 20 would form a "vacuum zone" and "no-load state" due to insufficient airflow coverage, resulting in reduced heat exchange efficiency and heat exchange uniformity. On the other hand, it avoids the first included angle being too large, which would cause the airflow to slide down rapidly along the baffle 40 and rush directly to the lower area of ​​the heat exchanger 20 without sufficient diffusion, causing "local overload" in the lower part of the heat exchanger 20, resulting in reduced heat exchange uniformity. At the same time, the length of the baffle 40 would increase, increasing the space occupied.

[0052] It should be noted that a "vacuum zone" refers to an area with insufficient airflow coverage and a smaller airflow compared to other areas; it does not imply an absolute vacuum. Figure 4As shown, when the first included angle is 0, that is, the partition 40 is parallel to the height direction, due to the existence of the second included angle, the airflow guided by the volute through the volute tongue 320 cannot reach the upper region of the partition 40. Therefore, a "vacuum zone" is formed in the upper region of the partition 40. At the same time, because the distance between the heat exchanger 20 and the partition 40 is relatively short, the diffusion space is limited, and the airflow enters the heat exchanger 20 before it can diffuse, resulting in no airflow passing through the lower part of the heat exchanger 20. Therefore, the lower part of the heat exchanger 20 is in an "unloaded state". Therefore, it is necessary to adjust the size of the first included angle to reduce or even eliminate the vacuum zone.

[0053] like Figure 1 , Figure 2 As shown, in some embodiments, the fan 30 includes a volute and a volute tongue 320; an exhaust port 310 is disposed on the volute; the volute tongue 320 includes a volute tongue head end and a volute tongue tail end, the volute tongue head end is connected to the lower edge of the exhaust port 310, the volute tongue 320 is arc-shaped and the center of curvature is located below the exhaust port 310, and the tangent direction of the volute tongue tail end is inclined downward; wherein, the first end is disposed on the volute tongue 320.

[0054] The airflow is buffered and diffused by the arc-shaped volute tongue 320 and the baffle plate 40, resulting in more uniform heat exchange and higher heat exchange efficiency in the heat exchanger 20. Specifically, since the airflow moves in a circular motion inside the volute, the arc-shaped volute tongue 320 can match the trajectory of the airflow, avoiding eddies caused by collisions at the volute tongue 320 and reducing airflow loss. At the same time, the downward sloping tangent at the end of the volute tongue provides an initial direction for the airflow guided by the baffle plate 40, preventing chaotic impacts when the airflow leaves the fan 30. In addition, the connection between the first end of the baffle plate 40 and the volute tongue 320 eliminates the gap between the volute tongue 320 and the baffle plate 40, preventing the airflow from directly entering the gap between the heat exchanger 20 and the fan 30 without guidance, thus avoiding wasted airflow.

[0055] It should be noted that the fan 30 also includes a fan blade disposed inside the volute and a motor for driving the fan blade to rotate; in addition, the fan 30 can be a centrifugal fan, with an air inlet disposed on the volute, the air inlet being located in the axial direction of the volute, and the air outlet 310 being located in the tangential direction of the volute.

[0056] It should also be noted that, such as Figure 2 As shown, one end of the volute tongue 320 is connected to the lower edge of the exhaust port 310, and the connection is rounded. Understandably, the lower edge of the exhaust port 310 refers to the bottom boundary of the volute exhaust port 310.

[0057] like Figure 1 , Figure 3 As shown, in some embodiments, the tangent direction at the end of the cochlear tongue has a second angle with the height direction, and the second angle is greater than the first angle.

[0058] By setting the second included angle to be greater than the first included angle, the airflow discharged from the fan 30 can enter the heat exchanger 20 in an orderly manner, resulting in a more uniform distribution. Specifically, the volute tongue 320 with a relatively large included angle consumes part of the kinetic energy of the airflow discharged from the exhaust port 310, reducing the airflow velocity. The decelerated airflow then enters the baffle 40 with a relatively small included angle, avoiding impact. At the same time, setting the volute tongue 320 with a relatively large included angle also allows the airflow to quickly break free from the constraint of the volute, preventing backflow near the volute tongue 320. Furthermore, the baffle 40 with a relatively small included angle can better guide the airflow, ensuring that it flows evenly to each fin of the heat exchanger 20 for sufficient heat exchange.

[0059] It should be noted that, as Figure 3 As shown, the second included angle is θ, and the second included angle θ is greater than the first included angle λ.

[0060] In some embodiments, the difference between the second included angle and the first included angle is greater than or equal to 40° and less than or equal to 50°.

[0061] By setting the angle difference between the second included angle and the first included angle, a more obvious height difference is formed between the volute tongue 320 and the baffle 40. The volute tongue 320 with a larger included angle can guide the airflow to the upper region of the heat exchanger 20, while the baffle 40 with a smaller included angle can guide the airflow to the middle and lower regions of the heat exchanger 20, thereby further ensuring the uniformity of heat exchange, especially ensuring that there is airflow in the lower region of the heat exchanger 20, and avoiding the formation of a "vacuum zone" due to lack of airflow.

[0062] It should be noted that, as Figure 3 As shown, the difference between the second included angle and the first included angle is γ.

[0063] In some embodiments, the ends of the partition 40 and the heat exchanger 20 have a preset distance in a direction perpendicular to the extension of the partition 40, the preset distance being greater than or equal to 10 mm and less than or equal to 20 mm.

[0064] By setting the distance between the baffle 40 and the heat exchanger 20 to between 10-20mm, sufficient diffusion space is provided to ensure that the airflow evenly covers the heat exchanger 20, while also meeting the compact design requirements of the ducted air conditioner and preventing airflow from escaping from the bottom of the heat exchanger 20. On the one hand, this avoids insufficient diffusion space due to an excessively small preset distance, which would cause the airflow to only diffuse to a local area of ​​the heat exchanger 20, resulting in heat exchange dead zones in other areas of the heat exchanger 20 due to insufficient airflow. On the other hand, it avoids excessively large preset distances, which would not only weaken the guiding effect of the baffle 40, causing the airflow to deviate from the preset direction and directly rush to the outside of the heat exchanger 20, resulting in wasted airflow, but would also compromise the compactness and lightweight design of the ducted air conditioner.

[0065] It should be noted that, as Figure 3 As shown, the preset spacing is L3, 10mm≤L3≤20mm.

[0066] In some embodiments, the opening height of the exhaust vent 310 is greater than or equal to 70 mm and less than or equal to 100 mm.

[0067] By setting the opening height of the exhaust vent 310 to between 70-100mm, airflow efficiency can be ensured while allowing the airflow to cover the entire heat exchanger 20. On the one hand, this avoids the problem of insufficient outlet cross-sectional area of ​​the exhaust vent 310 due to an insufficient opening height, which could lead to airflow blockage, concentrated airflow impacting local areas of the heat exchanger 20, and reduced heat exchange efficiency. On the other hand, it avoids the problem of excessive airflow diffusion, shortened air delivery distance, and increased volume of the fan 30 and casing 10 due to an excessive opening height.

[0068] It should be noted that, as Figure 3 As shown, the height is H, and 70mm≤H≤100mm.

[0069] like Figure 2 As shown, in some embodiments, a support member 50 is provided at the first end. The support member 50 includes a support section 510 and a transition section 520. The upper surface of the support section 510 is shaped to match the lower surface of the volute tongue 320. One end of the transition section 520 is connected to the support section 510 and the other end is connected to the first end. The transition section 520 abuts against the end of the volute tongue.

[0070] The support section 510 supports the volute tongue 320, and the shape matching between the upper surface of the support section 510 and the lower surface of the volute tongue 320 not only prevents airflow from being drawn in due to the gap between the support section 510 and the volute tongue 320, but also evenly disperses the vibration caused by the airflow impacting the volute tongue 320; the transition section 520 supports and limits the volute tongue 320, thus improving the reliability of the structure.

[0071] like Figure 2 As shown, in some embodiments, a transition slope 5201 is provided at the connection between the transition section 520 and the first end, and the transition slope 5201 has a third angle with the height direction; wherein, the third angle is equal to the second angle, and the extension line of the transition slope 5201 is collinear with the tangent at the end of the volute tongue.

[0072] By setting a transition slope 5201 and ensuring that the extension line of the transition slope 5201 is collinear with the tangent at the end of the volute tongue, a smooth transition is achieved between the baffle 40 and the volute tongue 320, ensuring that the air outlet angle of the volute tongue 320 is not affected, avoiding energy loss due to sudden angle changes, and preventing turbulence and eddies due to angle changes. At the same time, the transition slope 5201 improves the structural strength, reduces stress concentration, and effectively extends the service life of the baffle 40.

[0073] This application also provides an air conditioner, including the ducted air conditioner provided in the foregoing embodiments of this application.

[0074] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0075] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0076] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A ducted air conditioner, characterized in that, include: The housing has an air duct inside and an air outlet and an air inlet connected to the air duct respectively. The air outlet is located at one end of the housing. The heat exchanger is installed inside the air duct; A fan, disposed within the air duct and located on the side of the heat exchanger away from the air outlet, has its exhaust port facing the heat exchanger to guide the airflow from the air inlet to the heat exchanger; and A partition plate includes a first end and a second end, the first end being disposed at the lower edge of the exhaust port and the second end being disposed on the inner wall of the housing, the partition plate being located between the heat exchanger and the fan; The partition has a first angle between its extension direction and its height direction, and the first end is located above the second end. The distance between the first end and the end of the heat exchanger in the length direction is greater than the distance between the second end and the end of the heat exchanger in the length direction.

2. The duct air conditioner according to claim 1, characterized in that, The first included angle is greater than or equal to 10° and less than or equal to 20°.

3. The duct air conditioner according to claim 1, characterized in that, The fan includes: The volute, wherein the exhaust port is disposed on the volute; and The volute tongue includes a volute tongue head end and a volute tongue tail end. The volute tongue head end is connected to the lower edge of the exhaust port. The volute tongue is arc-shaped and the center of curvature is located below the exhaust port. The tangent direction of the volute tongue tail end is inclined downward. The first end is disposed on the volute tongue.

4. The duct air conditioner according to claim 3, characterized in that, The tangent direction at the end of the volute tongue forms a second angle with the height direction, and the second angle is greater than the first angle.

5. The duct air conditioner according to claim 4, characterized in that, The difference between the second included angle and the first included angle is greater than or equal to 40° and less than or equal to 50°.

6. The duct air conditioner according to claim 4, characterized in that, The partition and the end of the heat exchanger have a preset distance in the extension direction perpendicular to the partition, the preset distance being greater than or equal to 10 mm and less than or equal to 20 mm.

7. The ducted air handling unit according to any one of claims 1-6, characterized in that, The opening height of the exhaust vent is greater than or equal to 70mm and less than or equal to 100mm.

8. The ducted air handling unit according to any one of claims 4-6, characterized in that, The first end is provided with a support member, the support member comprising: A support segment, the upper surface of which is shaped to match the lower surface of the volute tongue; The transition section is connected at one end to the support section and at the other end to the first end, and the transition section abuts against the end of the volute tongue.

9. The duct air conditioner according to claim 8, characterized in that, A transition slope is provided at the connection between the transition section and the first end, and the transition slope has a third angle with the height direction; wherein, the third angle is equal to the second angle, and the extension line of the transition slope is collinear with the tangent at the end of the volute tongue.

10. An air conditioner, characterized in that, Including the duct unit as described in any one of claims 1-9.

Images