Ducted air conditioner indoor unit and air conditioner

Abstract

The present invention discloses a duct type air conditioner indoor unit and an air conditioner, belonging to the technical field of air conditioning. The duct type air conditioner indoor unit comprises: a housing; a fan assembly, the fan assembly is arranged in the housing, and has an air supply port; a heat exchanger, the heat exchanger is arranged in the housing, and is located at the downstream side of the air supply port, and the heat exchanger comprises a first group of fins and a second group of fins, and the ends of the first group of fins and the second group of fins away from the fan assembly are connected to form a closed end; and an air guide, the air guide is arranged between the closed end and the air supply port of the fan assembly, and has a diverter close to the fan assembly and a guide close to the heat exchanger, the diverter extends toward the air supply port, and the guide has a first air guide surface toward the first group of fins, and the first air guide surface extends obliquely toward the direction close to the first group of fins in the direction toward the closed end, so as to guide part of the air flow of the air supply port to the first group of fins. In the heat exchanger of the present invention, the air volume flowing through each fin is relatively uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a duct type air conditioning indoor unit and an air conditioner. Background Art

[0002] In the related art, the air blown out by the fan in the indoor unit of the ducted air conditioner needs to pass through the heat exchanger. However, when the heat exchanger is a multi-fold heat exchanger, there is a problem of uneven air volume between each group of fins in the multi-fold heat exchanger. Summary of the invention

[0003] The main purpose of the present invention is to provide a duct type air conditioner indoor unit and an air conditioner, aiming to solve the technical problem of uneven air volume between each group of fins of a multi-fold heat exchanger in the prior art.

[0004] To achieve the above object, the present invention provides a duct type air conditioner indoor unit, comprising:

[0005] case;

[0006] A fan assembly is arranged in the housing and has an air supply port;

[0007] A heat exchanger is disposed in the housing and is located at a downstream side of the air supply port, and the heat exchanger includes a first group of fins and a second group of fins, and ends of the first group of fins and the second group of fins away from the fan assembly are connected to form a closed end; and

[0008] An air guide member is arranged between the closed end and the air supply port of the fan assembly, and has a diverter portion close to the fan assembly and a guide portion close to the heat exchanger, the diverter portion extends toward the air supply port, the guide portion has a first air guide surface toward the first group of fins, and the first air guide surface extends obliquely in the direction toward the closed end toward the direction close to the first group of fins to guide part of the air flow from the air supply port to the first group of fins.

[0009] Optionally, the air guide member is rotatably connected to the shell.

[0010] Optionally, a first tangent line at a terminal end of the first wind guiding surface close to the closed end intersects with the first group of fins.

[0011] Optionally, a first tangent line at a terminal end of the first wind guiding surface close to the closed end intersects with an end of the first group of fins away from the fan assembly.

[0012] Optionally, the guide portion further has a second wind guiding surface facing the second group of fins, and a second tangent line at a terminal end of the second wind guiding surface close to the closed end intersects with the second group of fins.

[0013] Optionally, a second tangent line at a terminal end of the second wind guiding surface close to the closed end intersects with an end of the second group of fins away from the fan assembly.

[0014] Optionally, the diverter portion has a third air guiding surface facing the first group of fins, and an intersection point between a third tangent line at an end of the third air guiding surface close to the air supply port and the air supply port is farther from the second group of fins than a center of the air supply port.

[0015] Optionally, the diverter portion and the guide portion are connected by an arc transition.

[0016] Optionally, the air guide member is provided with at least one connecting hole penetrating the air guide member along the thickness direction of the air guide member.

[0017] Optionally, the plurality of communication holes include at least one group of communication holes arranged at intervals from each other along the length direction of the air guide member;

[0018] Any one of the communication hole groups includes at least two communication holes spaced apart from each other in a direction toward the closed end.

[0019] Optionally, the air guide includes:

[0020] an air guide body; and

[0021] At least one partition plate is disposed on a surface of the air guide body facing the first group of fins, and a plurality of partition plates are spaced apart from each other along the length direction of the air guide body.

[0022] Optionally, a portion of the air guide is located between the first group of fins and the second group of fins.

[0023] Optionally, the heat exchanger further comprises:

[0024] The barrier layer covers the end of the first group of fins away from the fan assembly and the end of the second group of fins away from the fan assembly.

[0025] Optionally, the fan assembly is a centrifugal fan assembly, the air outlet is located at the upper part of the shell, and the first group of fins is located above the second group of fins.

[0026] Optionally, the air supply outlet is inclined downward.

[0027] In a second aspect, the present invention further provides an air conditioner, comprising the above-mentioned duct-type air conditioner indoor unit.

[0028] In the technical solution of the present invention, the ends of the first group of fins and the second group of fins in the heat exchanger away from the fan assembly are connected to form a closed end, and an air guide is arranged between the heat exchanger and the fan assembly. The first air guide surface on the air guide gradually extends in a direction toward the closed end toward the first group of fins, so as to guide part of the air flow blown out of the air supply port to the first group of fins which originally has less air volume, so that the air volume flowing through the first group of fins and the second group of fins per unit time is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of a duct type air conditioner indoor unit of the present invention;

[0031] Figure 2 It is a structural schematic diagram of an embodiment of a duct type air conditioner indoor unit of the present invention;

[0032] Figure 3 for Figure 2 The local enlarged view of point I in the middle;

[0033] Figure 4 It is a structural schematic diagram of a heat exchanger in a duct-type air-conditioning indoor unit of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the air guide member of the indoor unit of the duct type air conditioner of the present invention.

[0035] Description of Figure Numbers:

[0036] Label name Label name 10 case 11 Support plate 20 Heat Exchanger 21 The first set of fins 22 The second set of fins 23 Barrier layer 30 Fan components 31 Air outlet 40 Air guide 41 Diversion Department 42 Guide 421 The first wind guide surface 422 Second wind guide surface 411 The third wind guide surface 43 Air guide body 44 Divider 45 Connecting hole 46 Drive components 47 Rotation axis

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] In the related art, the heat exchanger in the indoor unit of the ducted air conditioner can be a single-fold heat exchanger or a multi-fold heat exchanger. In particular, for a heat exchanger including two groups of fins arranged in a V shape, the air blown out of the air outlet of the fan assembly cannot pass through the two groups of fins evenly, resulting in the heat exchange capacity of one of the two groups of fins not being fully utilized.

[0043] To this end, an embodiment of the present invention provides a ducted air-conditioning indoor unit, which guides part of the air flow blown out of the air supply outlet to a group of fins with less air volume through a first air guide surface inclinedly arranged on the air guide member, so that the air volume flowing through the two groups of fins per unit time is uniform, thereby balancing the heat exchange capacity of the two groups of fins.

[0044] The inventive concept of the present application is further described below in conjunction with some specific embodiments.

[0045] In this embodiment, refer to Figure 1 and Figure 2 A duct type air conditioner indoor unit includes: a shell 10, a heat exchanger 20, a fan assembly 30 and an air guide 40.

[0046] The fan assembly 30 is disposed in the housing 10 and has an air outlet 31. The fan assembly 30 may include a plurality of groups, and the plurality of groups of fan assemblies 30 are disposed parallel to each other and at intervals.

[0047] The heat exchanger 20 is disposed in the housing and is located at the downstream side of the air outlet 31. The heat exchanger 20 includes a first set of fins 21 and a second set of fins 22. The ends of the first set of fins 21 and the second set of fins 22 away from the fan assembly 30 are connected to form a closed end. The heat exchanger includes at least two folded fins.

[0048] The air guide member 40 is arranged between the closed end and the air supply port 31 of the fan assembly 30, and the air guide member 40 has a diverter portion 41 close to the fan assembly 30 and a guide portion 42 close to the heat exchanger 20, the diverter portion 41 extends toward the air supply port 31, and the guide portion 42 has a first air guide surface 421 toward the first group of fins, and the first air guide surface 421 extends obliquely in the direction toward the closed end toward the direction close to the first group of fins 21 to guide part of the airflow from the air supply port 31 to the first group of fins 21.

[0049] Specifically, the housing 10 is provided with an air outlet, and the housing has a fan assembly 30 and a heat exchanger 20 spaced apart from each other, and the heat exchanger 20 is arranged on the air outlet side of the housing 10, that is, on the downstream side of the air supply port 31. The heat exchanger 20 is a multi-fold heat exchanger, such as a two-fold heat exchanger, and at least includes a first group of fins 21 and a second group of fins 22, one end of the first group of fins 21 and the second group of fins 22 are connected to form a closed end, and the other ends of the two groups of fins are separated from each other to form an open end, thereby forming a V-shaped structure, and the closed end is arranged close to the air outlet.

[0050] The fan assembly 30 is used to transport the gas to the outside of the housing 10. The fan assembly 30 may be a centrifugal fan assembly, including a volute, and a fan located in the volute. An air supply port 31 is provided on the volute. When the fan is working, the volute collects, guides, and expands the gas thrown out by the fan and discharges it from the air supply port 31. After passing through the heat exchanger 20, the gas enters the room from the air outlet. The air supply port 31 of the volute is located at the upper part of the housing 10, or the air supply port 31 may also be located at the lower part of the housing 10. In the housing 10, multiple groups of fins of the heat exchanger are arranged up and down. For a two-fold heat exchanger, the fins located at the upper part may be the first group of fins, and the fins located at the lower part may be the second group of fins.

[0051] The following further describes the example in which the air outlet 31 is located at the upper portion of the housing 10 and the first group of fins 21 is located above the second group of fins 22 .

[0052] See also Figure 1 and Figure 2In one example, the air outlet 31 of the volute is arranged close to the upper wall of the housing 10, and the air outlet 31 of the volute is inclined downward. Since the heat exchanger 20 is separated from the fan assembly 30, the air outlet 31 inclined downward has enough space to flow toward the second group of fins 22 located below. At this time, the air volume of the first group of fins 21 located above is small, and the air volume of the second group of fins 22 located below is large, so that most of the air sent out by the air outlet 31 directly passes through the second group of fins 22 for heat exchange and then flows to the air outlet.

[0053] Therefore, in this embodiment, an air guide 40 is provided between the closed end and the fan assembly 30. The air guide 40 extends toward the air outlet 31 near the flow divider 41 of the fan assembly 30. The flow divider 41 of the air guide 40 extends in the air supply direction of the air outlet 31, thereby dividing the air flow sent out of the air outlet 31 into two parts, an upper part and an lower part. The flow divider 41 is arranged in this way to prevent the air flow sent out of the air outlet 31 from directly impacting the air guide 40, causing the air guide to deform or generate a large noise. And the first air guide surface 421 of the air guide 40 is located on the upper surface of the air guide 40, and the first air guide surface 421 extends upwardly. The inclined first air guide surface 421 forms a concave surface with the flow divider 41, and the concave curvature is used to realize the "wind field Coanda effect" to guide part of the flowing air flow to the first group of fins 21, so that the air volume flowing to the first group of fins 21 and the second group of fins 22 is uniform, thereby making full use of the heat exchange capacity of the two groups of fins, and maximizing the heat exchange efficiency.

[0054] The air guide member 40 may be configured in a plate shape, a special-shaped curved surface, or a block shape, which is not limited in this embodiment.

[0055] It is worth mentioning that those skilled in the art can easily think of the structure in which the air outlet is located in the lower part of the shell and the first group of fins is located below the second group of fins, which will not be elaborated here.

[0056] Therefore, in this embodiment, an air guide 40 is provided for any two adjacent groups of fins, and the corresponding surface of the guide portion 42 of the heat exchanger 20 in the air guide 40 is configured as an inclined surface inclined toward a group of fins that need to be inclined to have an air volume, so that part of the air flow is directed to the group of fins, so that the air volume of the two groups of fins is relatively uniform, and the heat exchange capacity of the two groups of fins is fully utilized, thereby maximizing the heat exchange efficiency. In addition, in this embodiment, the air guide 40 guides and guides the air flow inside the housing 10, and can also assist in adjusting the air flow at the air outlet of the housing 10, so that the air flow passes through the air outlet evenly.

[0057] It is worth mentioning that the heat exchanger 20 may also include but is not limited to a third group of fins or a fourth group of fins, which is not limited in this embodiment.

[0058] The wind guide member 40 can be fixed in the housing 10 and its angle can be changed to adapt to different wind speeds.

[0059] In one embodiment, the air guide 40 is rotatably connected to the housing 10 .

[0060] See also Figure 4 and Figure 5 In the air supply direction, support plates 11 are fixed on the left and right sides of the heat exchanger 20. The support plates 11 are fixed in the housing 10. Two through holes are provided on the support plates 11, and the two through holes are coaxially arranged. The end surfaces of both ends of the air guide 40 are protruding to form a rotating shaft 47. The two ends of the air guide 40 are respectively sleeved on the corresponding support plates 11, so that the air guide 40 can rotate relative to the support plate 11, that is, relative to the housing 10. The rotating shaft 47 of the air guide 40 can be located in the middle of the end surface, or at one end of the end surface, which is not limited in this embodiment.

[0061] A driving component 46 such as a servo motor or a motor may be provided on the support plate 11, and the driving component 46 is connected to the air guide 40 in a transmission manner to drive the air guide 40 to rotate around the rotating shaft, so as to adapt to different fan speeds. For example, when the fan is running at a first speed, the inclination angle of the air guide 40 is N1, and when the fan is running at a second speed, the inclination angle of the air guide 40 is N2.

[0062] In a specific embodiment, the inclination angle of the air guide member 40 can be determined by the following method:

[0063] Step S101: When the air conditioner is running in cooling mode as a whole, the air guide is adjusted to a preset tilt angle; wherein, when the fan gear is running at a preset fixed gear, the opening value of the electronic expansion valve of the air conditioner changes according to a preset rule and the running time. The preset tilt angle is any one of a plurality of test tilt angles.

[0064] Step S102, when the preset conditions are met, obtain the current opening value of the electronic expansion valve. For example, the initial opening of the electronic expansion valve is A. After t1 time, it is adjusted every t2 time according to the following rules, and the adjustment opening = (t2-t1)-B. Among them, A is the initial constant, and the value range is [1,2000]. B is the target superheat, which is a fixed constant, and the value range is [0,10]. t1 is the time constant, and the value range is [0,10] minutes. t2 is the time constant, and the value range is [0,200]. A, B, t1 and t2 can all take different values ​​according to the specific model of the air conditioner.

[0065] The preconditions can be:

[0066] (1) The indoor unit ambient temperature is between [set temperature - 1, set temperature + 1].

[0067] (2) The difference between the maximum and minimum values ​​of the compressor operating frequency within a continuous time t is less than C, and the difference between the maximum and minimum values ​​of the electronic expansion valve opening is less than D. Where C is a constant preset value, ranging from [0,10] Hz; D is a constant preset value, ranging from [0,20].

[0068] Step S103, returning to execute step S101, and adjusting the air guide member to another preset inclination angle, and looping until the opening value corresponding to each value of the multiple test inclination angles is obtained.

[0069] Step S104: determining an optimal tilt angle corresponding to a preset fixed gear position according to a maximum value among a plurality of opening values.

[0070] The above method can be referred to to test and obtain the optimal tilt angle of the air guide member corresponding to any fan gear in the cooling mode. It is easy to understand that those skilled in the art can test and obtain the optimal tilt angle of the air guide member corresponding to any fan gear in the heating mode. No further details will be given here.

[0071] Through the above method, a mapping table of the optimal tilt angle of the air guide and the fan gear position can be obtained, and the user can adjust the angle of the air guide according to the mapping table of the optimal tilt angle and the fan gear position.

[0072] In this embodiment, in order to improve the flow diversion and guiding effect of the air guide member 40, the air guide member 40 must meet at least one of the following conditions during the rotation process:

[0073] (1) The first tangent line C at the end of the first air guide surface 421 close to the closed end intersects with the first group of fins 21 .

[0074] Furthermore, in order to avoid the diversion and guiding effect of the air guide 40 being excessive or insufficient, so that the air volume guided to the first group of fins 21 is greater than the air volume guided to the second group of fins, the first tangent C at the end of the first air guide surface 421 close to the closed end intersects with the end of the first group of fins 21 away from the fan assembly.

[0075] See also Figure 2 The first tangent line C at the right end of the upper surface contour of the first air guide surface 421 is always restricted to intersect with the right end surface of the first group of fins 21 during the rotation process, that is, it is always located at Figure 2 OA area in the.

[0076] Among them, the straight line at the connection between the first group of fins 21 and the second group of fins 22 is O, the upper boundary straight line of the right end face of the first group of fins 21 is A, and the intersection of the first tangent C and the side of the first group of fins 21 facing the air outlet is always between the OA area and will not intersect with the upper surface of the first group of fins 21, so as to ensure that the air volume flowing to the first group of fins 21 and the second group of fins 22 is uniform, so that the heat exchange capacity of the two groups of fins are fully utilized to maximize the heat exchange efficiency.

[0077] (2) The guide portion 42 further has a second air guiding surface 422 facing the second group of fins 22 , and a second tangent line D at a terminal end of the second air guiding surface 422 close to the closed end intersects with the second group of fins 22 .

[0078] Furthermore, in order to ensure the flow diversion and guiding effect of the air guide member 40 , the second tangent line D at the end of the second air guide surface 422 close to the closed end intersects with the end of the second group of fins 22 away from the fan assembly 30 .

[0079] See also Figure 2 The lower surface of the guide portion 42, that is, the second tangent line D at the right end of the contour of the second air guide surface 422, is restricted to always intersect with the right end surface of the second group of fins 22 during the rotation process, that is, it is always located at Figure 2 The OB region in the

[0080] Among them, the straight line at the connection between the first group of fins 21 and the second group of fins 22 is O, the lower boundary straight line of the right end face of the second group of fins 22 is B, and the intersection of the second tangent D and the side of the second group of fins 22 facing the air outlet is always between the OB area and will not intersect with the lower right surface of the second group of fins 22.

[0081] (3) The flow divider 41 has a third air guide surface 411 facing the first group of fins 21 , and an intersection point between a third tangent line E at a distal end of the third air guide surface 411 close to the air outlet 31 and the air outlet 31 is farther from the second group of fins 22 than the center of the air outlet 31 .

[0082] See also Figure 2 , the end of the air guide 40 close to the fan assembly 30 is a flow divider 41, which is used to divide the air sent out of the air outlet 31 into two parts of airflow, upper and lower. At this time, during the rotation of the air guide 40, the side surface of the flow divider 41 facing the first group of fins 21, that is, the area where the third tangent E at the left end of its upper surface contour intersects with the end surface of the air outlet 31 is always within the upper preset area of ​​the air outlet 31. The preset area can be determined according to factors such as the distance between the fan assembly 30 and the heat exchanger 20 and the angle of the air outlet 31 of the fan assembly 30.

[0083] For example, in a specific embodiment, the preset area can be the third to fifth areas from the top to the bottom after the air outlet 31 is divided into 10 equal parts in the vertical direction, so that the intersection of the third tangent line E and the air outlet 31 is in the third to fifth areas, and the center of the air outlet 31 is located at the lower boundary of the fifth area. At this time, it is not difficult to see that the intersection of the third tangent line E and the air outlet 31 is farther away from the second group of fins 22 located below.

[0084] Preferably, in order to ensure the wind guiding effect of the wind guiding member 40 during the rotation process, in a specific embodiment, the first tangent line C, the second tangent line D and the third tangent line E can respectively meet the above three conditions at the same time.

[0085] In one embodiment, the diverter portion 41 and the guide portion 42 are connected by an arc transition.

[0086] See also Figure 3 , the longitudinal section of the air guide 40 is generally an inwardly concave arc, such as its inwardly concave curvature is 0.01 to 0.1. In this embodiment, the diverter 41 and the guide 42 of the air guide 40 are connected by an arc transition to avoid airflow impacting the connection between the diverter 41 and the guide 42, thereby avoiding air volume loss. Since the first air guide surface 421 extends obliquely, the thickness of each part of the longitudinal section of the air guide 40 in this embodiment is not uniform.

[0087] In one embodiment, the air guide member 40 is provided with at least one communication hole 45 penetrating the air guide member 40 along the thickness direction of the air guide member 40 .

[0088] See also Figure 4 In this embodiment, at least one connecting hole on the air guide 40 can connect the upper airflow and the lower airflow of the air guide 40, relieve the pressure difference between the upper airflow and the lower airflow, and keep the pressure between the two uniform. When the airflow passes through multiple connecting holes, the wind speed decreases, but driven by the normal airflow at the upper or lower part, the airflow passing through the connecting holes increases the wind speed and continues to operate, minimizing the loss of air volume.

[0089] See also Figure 4 In one embodiment, the plurality of communication holes 45 include at least one communication hole group spaced apart from each other along the length direction of the air guide 40. Any communication hole group includes at least two communication holes spaced apart from each other in the direction toward the closed end.

[0090] The connecting holes are arranged in a rectangular array on the air guide 40, and include multiple groups of connecting holes in the length direction of the air guide 40. The multiple groups of connecting holes can be arranged parallel to each other and spaced apart. Each group of connecting holes includes multiple connecting holes arranged parallel to each other and spaced apart. In this embodiment, the connecting holes can be arranged as circular holes, and the area of ​​each circular hole is greater than or equal to 20 mm. 2 , and less than or equal to 80㎜ 2In addition, the connecting hole may also be set to other shapes such as an ellipse, which is not limited in this embodiment.

[0091] In this embodiment, the provision of the plurality of connecting holes 45 can alleviate the impact between the airflow delivered from the air delivery port 31 and the surface of the air guide member 40 , thereby preventing the air guide member 40 from being deformed.

[0092] See also Figure 4 and Figure 5 In one embodiment, the air guide member 40 includes an air guide body 43 and at least one partition plate 44, the partition plate 44 is arranged on the surface of the air guide body 43 facing the first group of fins 21, and multiple partition plates 44 are spaced apart from each other along the length direction of the air guide body 43.

[0093] In this embodiment, the air guide body 43 may be constructed in a plate shape, and its longitudinal cross section may be configured to be arc-like.

[0094] The surface of the air guide body 43 facing the first group of fins 21 is parallel to and spaced apart from a plurality of partition plates 44, thereby separating the upper airflow flowing through the surface of the air guide body 43 into multiple airflows to avoid mutual influence. In particular, when the air guide body 43 is provided with connecting holes, each group of connecting holes is located between adjacent partition plates 44, thereby alleviating the interaction of airflows between adjacent connecting hole groups.

[0095] In one embodiment, a portion of the air guide 40 is located between the first group of fins 21 and the second group of fins 22 .

[0096] It is easy to understand that when the air guide 40 is located at the air outlet 31, due to the long distance between the heat exchanger 20 and the air outlet 31, the airflow guided by the first air guide surface 421 has a poor guiding effect due to the distance attenuation. Alternatively, when the air guide 40 is entirely located between the first group of fins 21 and the second group of fins 22 of the heat exchanger 20, due to the short distance between the air guide 40 and the first group of fins 21 and the second group of fins 22, most of the airflow has already flowed to the second group of fins 22 facing the air outlet 31, and the diversion effect of the air guide 40 is not ideal. Therefore, in order to improve the diversion and guiding effect of the air guide 40, refer to Figure 1 and Figure 2 In this embodiment, the left end of the first group of fins 21 and the left end of the second group of fins 22 are both located between the splitter portion 41 and the guide portion 42, thereby ensuring that the air guide 40 can affect the airflow entering between the first group of fins 21 and the second group of fins 22, thereby ensuring that part of the airflow is directed to the target fins that need additional air volume, so that the heat exchanger 20 is fully utilized and the heat exchange efficiency is maximized.

[0097] In one embodiment, the heat exchanger 20 further includes a barrier layer 23 , which covers the end of the first group of fins 21 away from the fan assembly 30 and the end of the second group of fins 22 away from the fan assembly 30 .

[0098] Since the wind resistance at the joint of the first set of fins 21 and the second set of fins 22 is relatively small, when the indoor unit of the ducted air conditioner is in operation, after the wind wheel is started and a wind field is formed in the housing 10, most of the airflow tends to flow to the joint with relatively small wind resistance, and thus flows to the air outlet of the housing 10 without sufficient heat exchange, which is the so-called "air leakage phenomenon". The "air leakage phenomenon" causes a temperature difference in the air blown out of the air outlet, affecting the user's body comfort.

[0099] See also Figure 2 In this embodiment, a barrier layer 23 is covered on the end surface of the first group of fins 21 away from the fan assembly 30 and the end surface of the second group of fins 22 away from the fan assembly 30. The barrier layer 23 blocks the joint of the heat exchanger 20, increases the wind resistance there, thereby preventing air leakage, further optimizes the wind field inside the shell 10, makes full use of the heat exchanger 20, and maximizes the heat exchange efficiency. The barrier layer 23 can be sponge or other rubber equivalent materials. In addition, the sponge can reduce the noise of the air conditioner, so that the air conditioner can achieve a relatively quiet effect.

[0100] In a second aspect, the present invention further provides an air conditioner, comprising the above-mentioned duct type air conditioner indoor unit. The specific structure of the duct type air conditioner indoor unit refers to the above-mentioned embodiment. Since the present air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0101] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A duct type air conditioner indoor unit, characterized in that: include: case; A fan assembly, the fan assembly is arranged in the housing and has an air supply port; A heat exchanger, the heat exchanger is arranged in the housing and is located at the downstream side of the air supply port, and the heat exchanger includes a first group of fins and a second group of fins, and the ends of the first group of fins and the second group of fins away from the fan assembly are connected to form a closed end; as well as an air guide member, the air guide member being arranged between the closed end and the air supply port of the fan assembly, and having a flow divider portion close to the fan assembly and a guide portion close to the heat exchanger, the flow divider portion extending toward the air supply port, the guide portion having a first air guide surface facing the first group of fins, the first air guide surface extending obliquely in a direction toward the closed end toward a direction close to the first group of fins, so as to guide part of the airflow of the air supply port to the first group of fins; The air supply port is located at the upper part of the housing, the first group of fins is located above the second group of fins, and the air supply port is inclined downward; The air guide member is rotatably connected to the housing, the flow splitter has a third air guide surface facing the first group of fins, and an intersection point of a third tangent line of the third air guide surface at a terminal end close to the air supply port and the air supply port is farther away from the second group of fins than a center of the air supply port; And the air guide member satisfies at least one of the following conditions during the rotation process; A first tangent line of the first wind guide surface at a terminal end close to the closed end intersects with the first group of fins; The guide portion further has a second wind guiding surface facing the second group of fins, and a second tangent line of the second wind guiding surface at a terminal end close to the closed end intersects with the second group of fins.

2. The duct type air conditioner indoor unit according to claim 1, characterized in that: A first tangent line of the first wind guiding surface at a terminal end close to the closed end intersects with an end of the first group of fins away from the fan assembly.

3. The duct type air conditioner indoor unit according to claim 1, characterized in that: A second tangent line of the second wind guiding surface at a terminal end close to the closed end intersects with an end of the second group of fins away from the fan assembly.

4. The duct type air conditioner indoor unit according to claim 1, characterized in that: The diverter portion and the guide portion are connected by an arc transition.

5. The duct type air conditioner indoor unit according to claim 1, characterized in that: The air guide member is provided with at least one connecting hole penetrating the air guide member along the thickness direction of the air guide member.

6. The duct type air conditioner indoor unit according to claim 5, characterized in that: The plurality of communication holes include at least one communication hole group spaced apart from each other along the length direction of the air guide member; Any one of the communication hole groups includes at least two communication holes spaced apart from each other in a direction toward the closed end.

7. The duct type air conditioner indoor unit according to claim 1, characterized in that: The air guide member comprises: an air guide body; and At least one partition plate is disposed on a surface of the air guide body facing the first group of fins, and a plurality of the partition plates are spaced apart from each other along a length direction of the air guide body.

8. The duct type air conditioner indoor unit according to claim 1, characterized in that: A portion of the air guide is located between the first group of fins and the second group of fins.

9. The duct type air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger also includes: A barrier layer covers the end of the first group of fins away from the fan assembly and the end of the second group of fins away from the fan assembly.

10. The duct type air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: The fan assembly is a centrifugal fan assembly.

11. An air conditioner, characterized in that: It comprises the duct type air conditioner indoor unit as claimed in any one of claims 1 to 10.

Images