Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit, and belongs to the technical field of air conditioners. The air conditioner indoor unit comprises a shell, a first air inlet and a second air inlet, a first air outlet is formed in the bottom of the shell, and two second air outlets are further formed in the shell; the two fans are arranged in one-to-one correspondence with the second air ports; the heat exchanger is arranged in the shell corresponding to the first air opening and is used for exchanging heat with air passing through the heat exchanger; the vertical size of the heat exchanger is smaller than the transverse size of the heat exchanger. The heat exchanger and the fan are transversely arranged, the highest point of the heat exchanger is not higher than the highest point of the fan, and the vertical distance between the lowest point of the heat exchanger and the lowest point of the fan is not larger than the radius of the fan. The air conditioner indoor unit has the advantage of being thin in thickness.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning indoor unit. Background Art

[0002] The structural forms of air conditioners vary according to different application scenarios and installation methods. The thickness of existing embedded air conditioner indoor units is generally large, which may cause aesthetic problems when installed on a suspended ceiling. Utility Model Content

[0003] The present application provides an air-conditioning indoor unit, which has the advantage of being thin.

[0004] In one aspect of the present application, an indoor unit of an air conditioner comprises: a housing, a bottom of which is provided with a first air outlet, and a second air outlet is further provided on the housing; a fan is provided corresponding to the second air outlet; a heat exchanger is provided in the housing corresponding to the first air outlet and is used to exchange heat with air passing therethrough;

[0005] The vertical dimension of the heat exchanger is smaller than the horizontal dimension of the heat exchanger; the heat exchanger and the fan are arranged horizontally, the highest point of the heat exchanger is not higher than the highest point of the fan, and the vertical distance from the lowest point of the heat exchanger to the lowest point of the fan is not greater than the radius of the fan;

[0006] When the fan is running, air enters the shell from the first air inlet, exchanges heat with the heat exchanger, and is blown out from the second air inlet; or, air enters the shell from the second air inlet, exchanges heat with the heat exchanger, and is blown out from the first air inlet.

[0007] On the other hand of the present application, an air conditioner indoor unit includes: a shell having a first air outlet at the bottom and two second air outlets on the shell; two fans, which are arranged one-to-one corresponding to the second air outlets; and a heat exchanger, which is arranged in the shell corresponding to the first air outlet and is used to exchange heat with air passing therethrough.

[0008] In some embodiments, the lowest point of the heat exchanger is not lower than the lowest point of the fan.

[0009] In some embodiments, it also includes: a filter screen, which is arranged at the first air outlet, and the filter screen density of the two parts of the filter screen close to the fan is greater than the filter screen density of the middle part of the filter screen.

[0010] In some embodiments, it also includes: a rectifier plate, which is arranged at the first air outlet. In the vertical section passing through the two fans, the rectifier plate is provided with a plurality of fins arranged laterally at intervals, and the fins are inclined from bottom to top toward the middle of the rectifier plate.

[0011] In some embodiments, it also includes: a filter screen, which is arranged at the first air outlet, and the filter screen is made of a pleated material; the filter screen includes a first filter screen and a second filter screen whose arrangement direction is the same as the arrangement direction of the two fans, and the first filter screen and the second filter screen are connected at one end close to each other; the minimum folding area of ​​the first filter screen and the second filter screen is less than half of the area of ​​the first air outlet.

[0012] In some embodiments, when one of the two fans is running and the other is not running, the folding area of ​​the first filter and the second filter that is closer to the running fan is less than half of the area of ​​the first air outlet.

[0013] In some embodiments, the heat exchanger is in an arc or V-shape with a middle portion convex upward, and the thickness of the heat exchanger gradually increases from the middle portion of the heat exchanger toward the direction close to the fan.

[0014] In some embodiments, the spacing between the refrigerant pipes on the heat exchanger gradually increases from the end of the heat exchanger close to the fan to the middle of the heat exchanger.

[0015] In some embodiments, the heat exchanger is in an arc shape or a V shape with a convex middle portion;

[0016] The indoor unit of the air conditioner also includes a water receiving pan, which is located at both ends of the lower part of the heat exchanger and is used to collect condensed water on the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The application scenario of the indoor unit of the air conditioner according to some embodiments is shown. Figure 1 ;

[0018] Figure 2 The application scenario of the indoor unit of the air conditioner according to some embodiments is shown. Figure 2 ;

[0019] Figure 3 The figure shows the interior of the indoor unit of the air conditioner of the first embodiment from a side view;

[0020] Figure 4 The figure shows the interior of the indoor unit of the air conditioner of the first embodiment from a top view;

[0021] Figure 5 A schematic diagram showing the interior of an air conditioner indoor unit of a second embodiment from a side view;

[0022] Figure 6 A schematic diagram showing a filter screen of an indoor unit of an air conditioner according to a second embodiment;

[0023] Figure 7 A schematic diagram showing the interior of an air conditioner indoor unit according to a third embodiment from a side view;

[0024] Figure 8 A schematic diagram showing an indoor unit of an air conditioner according to a third embodiment in a single-fan operating state;

[0025] Fig. 9 A schematic diagram showing a filter screen of an indoor unit of an air conditioner according to a third embodiment;

[0026] Fig.10 A schematic diagram of the interior of an air conditioner indoor unit according to a fourth embodiment is shown in a side view;

[0027] Fig.11 shows a schematic diagram of the interior of an air conditioner indoor unit of a fifth embodiment from a side view;

[0028] Fig.12 A schematic diagram showing a heat exchanger of an indoor unit of an air conditioner according to a fifth embodiment;

[0029] Fig.13 shows a schematic diagram of the interior of an air conditioner indoor unit according to a sixth embodiment from a side view;

[0030] Fig.14 A schematic diagram showing a heat exchanger of an indoor unit of an air conditioner according to a sixth embodiment;

[0031] Fig.15 The figure shows the internal schematic diagram of the indoor unit of the air conditioner according to the sixth embodiment from a top view.

[0032] In the above figures, 1, air conditioner indoor unit; 10, shell; 11, lower panel; 12, upper panel; 13, side panel; 14, first air outlet; 15, second air outlet; 20, heat exchanger; 21, first heat exchange part; 22, middle heat exchange part; 23, second heat exchange part; 30, fan; 40, filter; 41, first filter part; 42, middle filter part; 43, second filter part; 44, first filter; 45, second filter; 46, support rod; 47, telescopic rod; 50, rectifier plate; 51, rib; 60, water tray; 70, drain pump. DETAILED DESCRIPTION

[0033] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0034] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.

[0038] The compressor compresses the refrigerant gas in a low temperature and low pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0039] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0040] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0041] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0042] According to an embodiment of the present application, an air conditioner includes an indoor air conditioner installed in an indoor space. The indoor air conditioner 1 is connected to an outdoor air conditioner installed in an outdoor space through a pipe. The outdoor air conditioner may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expansion valve, and similar components of a refrigeration cycle, and the indoor air conditioner 1 may also be provided with an indoor heat exchanger and an indoor fan.

[0043] The indoor unit of the air conditioner can be an embedded installation structure. The existing embedded indoor unit of the multi-split unit is mainly used in public buildings. Its advantage is that it does not require the installation of air ducts and is simple and fast to install. However, due to its large thickness, usually ≥ 240mm, when it is used in residential buildings, it will cause problems such as aesthetics due to the large hoisting thickness.

[0044] Based on the above problems, the present application provides a novel air-conditioning indoor unit structure to solve the problem of excessive thickness of the embedded indoor unit.

[0045] Reference Figures 1 to 4 According to the embodiment of the present application, the air-conditioning indoor unit 1 includes a housing 10 , which forms the overall appearance of the air-conditioning indoor unit 1 .

[0046] The housing 10 may be in a rectangular parallelepiped shape, and includes a lower panel 11 having a first air outlet 14 , an upper panel 12 disposed above the lower panel 11 , and a pair of side panels 13 disposed between the upper panel 11 and the lower panel 12 .

[0047] A second air port 15 is provided on the side panel 13 or the lower panel 11. One of the first air port 14 and the second air port 15 is used for allowing air to flow into the housing 10, and the other is used for allowing air in the housing 10 to flow out. That is, when the first air port 14 is an air inlet, the second air port 15 is an air outlet; when the second air port 15 is an air inlet, the first air port 14 is an air outlet.

[0048] The air conditioner indoor unit 1 may include a heat exchanger 20. The heat exchanger 20 is disposed in the housing 10 corresponding to the first air outlet 14. The heat exchanger 20 is used to absorb heat from the air introduced into the housing 10 or transfer heat to the air.

[0049] The air conditioner indoor unit 1 may include a fan 30. The fan 30 is disposed inside the housing 10. The fan 30 is used to blow out air so that the air flows from the first air outlet 14 to the second air outlet 15, or so that the air flows from the second air outlet 15 to the first air outlet 14.

[0050] The fan 30 may be a centrifugal fan. In other embodiments, the fan 30 may also be a cross-flow fan.

[0051] According to the embodiment of the present application, the vertical dimension of the heat exchanger 20 is smaller than the horizontal dimension of the heat exchanger 30. That is, the heat exchanger 20 is arranged horizontally to avoid the increase of the thickness of the air conditioner indoor unit 1 caused by the vertical dimension of the heat exchanger 20 being too large.

[0052] The fan 30 and the heat exchanger 20 are arranged horizontally. The highest point of the heat exchanger 20 is not higher than the highest point of the fan 30, and the vertical distance from the lowest point of the heat exchanger 20 to the lowest point of the fan 30 is not greater than the radius of the fan 30. Thus, the vertical size range of the heat exchanger 20 and the fan 30 can be limited, ensuring that the vertical size of the housing 10 is relatively small.

[0053] In the embodiment provided in the present application, by arranging the fan 30 and the heat exchanger 20 horizontally, the problem of increasing the thickness when the two are arranged vertically can be avoided. By limiting the vertical dimension range of the heat exchanger 20 relative to the fan 30, the structural dimensions inside the shell 10 can be made more compact.

[0054] According to an embodiment of the present application, there is a gap between the heat exchanger 20 and the upper panel 12 , and the gap forms an air duct, which connects the heat exchanger 20 and the fan 30 so that air can flow between the heat exchanger 20 and the fan 30 .

[0055] In some embodiments, the lowest point of the heat exchanger 20 is not lower than the lowest point of the fan 30. Therefore, the thickness of the shell 10 is determined by the size of the fan 30. The shell 10 only needs to be able to accommodate the fan 30 in the thickness direction, thereby further reducing the thickness of the air conditioner indoor unit 1.

[0056] In some embodiments, a pair of side panels 13 of the housing 10 are opposite to each other in the left-right direction, and each of the two side panels 13 is provided with a second air outlet 15. There are two fans 30, which are respectively arranged corresponding to the second air outlet 15. In the lateral direction, the heat exchanger 20 is located between the two fans 30.

[0057] In other embodiments, two second air vents 15 may be disposed on the lower panel 12 , and the first air vent 14 is located between the two second air vents 15 .

[0058] In some embodiments, the fan 30 is a structure that can rotate forward and reverse. When the fan 30 rotates forward, the air flows from the first air outlet 14 to the second air outlet 15; when the fan 30 rotates reversely, the air flows from the second air outlet 15 to the first air outlet 14.

[0059] In one application scenario, refer to Figure 1 and Figure 2, the arrows in the figure indicate the air flow direction, and the air conditioner indoor unit 1 is hoisted on the top of the room. Since the thickness of the air conditioner indoor unit 1 is relatively thin, the aesthetics can be improved.

[0060] In cooling mode, refer to Figure 1 The indoor air enters the shell 10 through the first air outlet 14, then flows through the heat exchanger 20, exchanges heat with the heat exchanger 20, and the temperature is reduced. Then, the indoor air is divided into two parts, one part reaches the fan 30 on the left, and is finally sent into the room through the second air outlet 15 on the left; the other part reaches the fan 30 on the right, and is finally sent into the room through the second air outlet 15 on the right.

[0061] In heating mode, refer to Figure 2 A part of the indoor air enters the shell 10 through the second air outlet 15 on the left, and then reaches the fan 30 on the left. The other part of the indoor air enters the shell 10 through the second air outlet 15 on the right, and then reaches the fan 30 on the right. Driven by the two fans 30, the two parts of the air flow are mixed and then flow through the heat exchanger 20, exchange heat with the heat exchanger 20, increase the temperature, and finally are sent into the room through the first air outlet 14.

[0062] In some embodiments, the air-conditioning indoor unit 1 is a dry-type indoor unit, that is, the heat exchanger 20 does not generate condensed water, so that a water receiving pan may not be provided inside the air-conditioning indoor unit 1 .

[0063] The dry-type indoor unit can achieve no condensation water generation by controlling the temperature at the heat exchanger 20 to always be higher than the dew point temperature of the indoor return air.

[0064] The heat exchanger 20 may be in the form of a flat plate. In the plate form, the thickness of the heat exchanger 20 is relatively small.

[0065] In some embodiments, reference Figure 5 and Figure 6 The air conditioner indoor unit 1 includes a filter 40. The filter 40 is arranged corresponding to the first air outlet 14, and is used to filter the air from the first air outlet 14 to prevent impurities, dust, etc. from entering the interior of the housing 10.

[0066] The filter screen 40 is in an arc shape with a downwardly convex middle portion. In the left-right direction, the filter screen 40 can be divided into three parts, namely, a first filter screen part 41, a middle filter screen part 42, and a second filter screen part 43. The middle filter screen part 42 is located in the middle of the filter screen 40, and the first filter screen part 41 and the second filter screen part 43 are located on the left and right sides of the middle filter screen part 42, respectively.

[0067] The filter density of the middle filter part 42 is smaller than the filter density of the first filter part 41 and the second filter part 43. The greater the filter density, the smaller the pores on the filter.

[0068] In the case of uniform filter density, since the fan 30 is located on the left and right sides of the heat exchanger 20, the left and right sides are relatively close to the fan 30, and the wind resistance is relatively small, this will cause most of the airflow of the first air outlet 14 to flow from the left and right sides of the heat exchanger 20 to the fan 30, while the airflow in the middle of the heat exchanger 20 is relatively small, which will reduce the utilization rate of the heat exchanger 20. Therefore, in the embodiment of the present application, the filter density in the middle of the filter 40 is relatively small, which can reduce the wind resistance of the airflow in the middle, so that the wind field on the entire surface of the heat exchanger 20 tends to be uniform.

[0069] The filter density of the filter 40 gradually decreases from the left end to the middle of the filter 40 ; and the filter density of the filter 40 gradually decreases from the right end to the middle of the filter 40 .

[0070] In some embodiments, reference Figure 7 The filter 40 is made of pleated fiber and can be folded and unfolded.

[0071] The filter 40 includes a first filter 44 and a second filter 45. The first filter 44 and the second filter 45 are arranged left and right, with the first filter 44 located on the left and the second filter 45 located on the right.

[0072] The minimum folding area of ​​the first filter 44 and the second filter 45 is smaller than half of the area of ​​the first air outlet 14 .

[0073] Typically, the first filter screen 44 and the second filter screen 45 cover half of the first air outlet 14 respectively.

[0074] Reference Figure 8 When one of the two fans 30 is running and the other is not running, the folding area of ​​the first filter 44 and the second filter 45 close to the running fan 30 is less than half of the area of ​​the first air outlet 14.

[0075] Specifically, when the left fan 30 is running and the right fan 30 is not running, the first filter 44 on the left is folded to 1 / 4 of the first air outlet 14 panel, and the second filter 45 on the right is unfolded to 3 / 4 of the area of ​​the first air outlet 14.

[0076] In this way, since the wind resistance at the first filter 44 is greater than the wind resistance at the second filter 45, a larger air flow will flow from the second filter 45 to the heat exchanger 20, which can avoid the problem that most of the air flow flows from the left side to the heat exchanger 20 and causes the right part of the heat exchanger 20 to be unutilized, so that the wind field on the heat exchanger 20 is relatively uniform, and the heat exchange effect of each part of the heat exchanger 20 is fully exerted.

[0077] According to the embodiments of the present application, referring to Fig. 9The left end of the first filter 44 is fixedly connected to the housing 10, and the right end of the second filter 45 is fixedly connected to the housing 10. The ends of the first filter 44 and the second filter 45 close to each other are connected by a support rod 46. The support rod 46 is connected to the end of the telescopic rod 47. The telescopic direction of the telescopic rod 47 is the left and right direction, and the telescopic rod 47 can be driven by a motor to telescope.

[0078] When the telescopic rod 47 is extended to the left, it pushes the support rod 46 to move to the left; when the telescopic rod 47 is retracted to the right, it pulls the support rod 46 to move to the right.

[0079] In some embodiments, reference Fig.10 The air conditioner indoor unit 1 may include a rectifier plate 50 , which is disposed corresponding to the first air outlet 14 and is located on a side of the filter 40 away from the heat exchanger 20 .

[0080] The rectifier plate 50 is provided with fins 51 arranged at intervals in the left-right direction. From bottom to top, the fins 51 are arranged tilted toward the middle, so that under the guidance of the fins 51, the airflow flows toward the middle, so that the wind field of the entire surface of the heat exchanger 20 tends to be uniform.

[0081] According to an embodiment of the present application, with the vertical center line of the rectifier plate 50 as the dividing line, the ribs 51 on the left side of the dividing line are inclined from top to bottom to the right, and the ribs 51 on the right side of the dividing line are inclined from top to bottom to the left.

[0082] In some embodiments, reference Figures 11 to 13 The heat exchanger 20 may be in an arc shape or a "V" shape with a central portion convex upward.

[0083] In the left-right direction, the thickness of the middle portion of the heat exchanger 20 is smaller than the thickness of the left and right portions thereof. Specifically, the heat exchanger 20 includes a first heat exchange portion 21 , a middle heat exchange portion 22 , and a second heat exchange portion 23 .

[0084] The middle heat exchange part 22 is located in the middle of the heat exchanger 20, and the first heat exchange part 21 and the second heat exchange part 23 are respectively located on the left and right sides of the middle heat exchange part 22. The thickness of the middle heat exchange part 22 is smaller than that of the first heat exchange part 21 and the second heat exchange part 23.

[0085] Since the thickness of the middle part of the heat exchanger 20 is smaller, the wind resistance in the middle part is smaller than that on the left and right sides, so the airflow in the middle part can be increased, so that the wind field on the heat exchanger 20 is more uniform, and the heat exchange effect of each part of the heat exchanger 20 is fully utilized.

[0086] According to the embodiment of the present application, the thickness of the heat exchanger 20 gradually becomes thinner in a direction from the left and right ends of the heat exchanger 20 toward the middle.

[0087] In some embodiments, reference Fig.14 The heat exchanger 20 is a fin heat exchanger, including fins and refrigerant pipes passing through the fins. The refrigerant pipes are used to circulate refrigerant.

[0088] The spacing between the refrigerant tubes on the heat exchanger 20 gradually increases from the end of the heat exchanger 20 close to the fan 30 to the middle of the heat exchanger 20. That is, the spacing between the refrigerant tubes gradually increases from the left end to the middle; and the spacing between the refrigerant tubes gradually increases from the right end to the middle.

[0089] From both ends to the middle, the spacing between the refrigerant pipes is L1, L2, L3...Li-1, Li, Li+1. Then L1 <L2<L3<......<Li-1<Li<Li+1。

[0090] Therefore, the refrigerant pipes in the middle of the heat exchanger 20 are arranged sparsely, while the refrigerant pipes at the left and right ends of the heat exchanger 20 are arranged densely, so that the wind resistance in the middle of the heat exchanger 20 is smaller, and more airflow passes through the middle of the heat exchanger 20, thereby achieving the purpose of uniform wind field on the heat exchanger 20.

[0091] In some embodiments, condensed water may be generated on the heat exchanger 20 in the air conditioner indoor unit 1. The heat exchanger 20 may be in a "V" shape or an arc shape with a convex middle portion.

[0092] Reference Fig.13 and Fig.15 The air conditioner indoor unit 1 includes a water receiving pan 60 , which is arranged below the left end and the right end of the heat exchanger 2 .

[0093] Since the left and right ends of the heat exchanger 20 are at the lowest height, the condensed water on the heat exchanger 20 will flow along the surface of the heat exchanger 20 to the left or right end, and then flow into the water receiving trays 60 at the left and right ends.

[0094] The air conditioner indoor unit 1 may include a drainage pump 70 for draining the condensed water in the water receiving tray 60 .

[0095] In the present application, the vertical dimension of the heat exchanger 20 is set to be smaller than the lateral dimension of the heat exchanger 30 , so as to avoid the increase in the thickness of the air conditioner indoor unit 1 due to the vertical dimension of the heat exchanger 20 being too large.

[0096] In the present application, by arranging the fan 30 and the heat exchanger 20 horizontally, the problem of increasing the thickness when the two are arranged vertically can be avoided. By limiting the vertical dimension range of the heat exchanger 20 relative to the fan 30, the structural dimensions inside the shell 10 can be made more compact.

[0097] In the present application, the lowest point of the heat exchanger 20 is not lower than the lowest point of the fan 30, and the thickness of the housing 10 only needs to accommodate the fan 30, which greatly reduces the thickness of the air conditioner indoor unit.

[0098] In the present application, the filter density in the middle of the filter 40 is smaller than the filter density at both ends thereof, which can reduce the wind resistance of the air flow in the middle, making the wind field on the entire surface of the heat exchanger 20 tend to be uniform.

[0099] In the present application, the fins 51 on the rectifying plate 50 are inclined toward the middle of the heat exchanger 20, which can guide the air flow toward the middle of the heat exchanger 20, thereby increasing the air flow toward the middle of the heat exchanger 20, making the wind field on the entire surface of the heat exchanger 20 tend to be uniform.

[0100] In the present application, the thickness of the middle part of the heat exchanger 20 is smaller than the thickness of the left and right ends. Since the thickness of the middle part of the heat exchanger 20 is smaller, the wind resistance in the middle part is smaller than that on the left and right sides, and the airflow in the middle part can be increased, so that the wind field on the heat exchanger 20 is more uniform, and the heat exchange effect of each part of the heat exchanger 20 is fully utilized.

[0101] In the present application, the spacing between the refrigerant tubes on the heat exchanger 20 gradually increases from the end of the heat exchanger 20 close to the fan 30 to the middle of the heat exchanger 20. Since the refrigerant tubes in the middle of the heat exchanger 20 are arranged sparsely, the refrigerant tubes at the left and right ends of the heat exchanger 20 are arranged densely, the wind resistance in the middle of the heat exchanger 20 is smaller, and the wind field on the heat exchanger 20 is more uniform.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0103] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner indoor unit, characterized in that: include: A shell, the bottom of which is provided with a first air outlet, and the shell is also provided with two second air outlets; There are two fans, which are arranged one-to-one corresponding to the second air outlets; a heat exchanger, arranged in the housing corresponding to the first air outlet, for exchanging heat with the air passing therethrough; The vertical dimension of the heat exchanger is smaller than the horizontal dimension of the heat exchanger; the heat exchanger and the fan are arranged horizontally, the highest point of the heat exchanger is not higher than the highest point of the fan, and the vertical distance from the lowest point of the heat exchanger to the lowest point of the fan is not greater than the radius of the fan; When the fan is in operation, air enters the housing from the first air outlet, exchanges heat with the heat exchanger, and is then blown out from the second air outlet; Alternatively, air enters the housing from the second air outlet, exchanges heat with the heat exchanger, and is then blown out from the first air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that: The lowest point of the heat exchanger is not lower than the lowest point of the fan.

3. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: The filter screen is arranged at the first air outlet, and the filter screen density of the portion of the filter screen close to the fan is greater than the filter screen density of the middle portion of the filter screen.

4. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: A rectifier plate is arranged at the first air outlet. In a vertical section passing through the two fans, the rectifier plate is provided with a plurality of fins arranged laterally at intervals, and the fins are inclined from bottom to top toward the middle of the rectifier plate.

5. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: A filter screen is arranged at the first air outlet, and the filter screen is made of a pleated material; The filter screen includes a first filter screen and a second filter screen arranged in the same direction as the arrangement direction of the two fans, and the first filter screen and the second filter screen are connected at one end close to each other; The minimum folding area of ​​the first filter screen and the second filter screen is less than half of the area of ​​the first air outlet.

6. The air conditioner indoor unit according to claim 5, characterized in that: When one of the two fans is running and the other is not running, the folding area of ​​the first filter and the second filter that is close to the running fan is less than half of the area of ​​the first air outlet.

7. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger is in an arc shape or a V shape with a middle portion convex upward, and the thickness of the heat exchanger gradually increases from the middle portion of the heat exchanger toward the direction close to the fan.

8. The air conditioner indoor unit according to claim 1, characterized in that: In a direction from the end of the heat exchanger close to the fan to the middle of the heat exchanger, the spacing between the refrigerant pipes on the heat exchanger gradually increases.

9. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger is in an arc shape or a V shape with a convex middle portion; The air conditioner indoor unit also includes: The water receiving trays are located at both ends of the lower part of the heat exchanger and are used to collect condensed water on the heat exchanger.

10. An air conditioner indoor unit, characterized in that: include: A shell, the bottom of which is provided with a first air outlet, and the shell is also provided with a second air outlet; A fan, arranged corresponding to the second air outlet; a heat exchanger, arranged in the housing corresponding to the first air outlet, for exchanging heat with the air passing therethrough; The vertical dimension of the heat exchanger is smaller than the horizontal dimension of the heat exchanger; the heat exchanger and the fan are arranged horizontally, the highest point of the heat exchanger is not higher than the highest point of the fan, and the vertical distance from the lowest point of the heat exchanger to the lowest point of the fan is not greater than the radius of the fan; When the fan is in operation, air enters the housing from the first air port, exchanges heat with the heat exchanger, and is then blown out from the second air port; Alternatively, air enters the housing from the second air outlet, exchanges heat with the heat exchanger, and is then blown out from the first air outlet.

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