Air conditioner indoor unit and cabinet

Abstract

The utility model provides an air conditioner indoor unit and a cabinet. The air conditioner indoor unit comprises a shell, an air suction fan and a heat exchanger. The shell comprises a front shell and a rear shell which are oppositely arranged. An air inlet and an air outlet are formed in the front shell at intervals. An air duct is connected between the air inlet and the air outlet. The air suction fan is located in the air duct, and the inlet side of the air suction fan is opposite to the air inlet. The heat exchanger is located in the air duct and located between the outlet side of the air suction fan and the air outlet. The distance between the air inlet and the rear shell is smaller than 3 / 4 of the distance between the air outlet and the rear shell. According to the indoor unit, the air loss of inlet air flow between the air inlet and the inlet side can be reduced, the air inlet efficiency of the indoor unit is improved, and the energy consumption of the indoor unit is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an indoor unit of an air conditioner and a cabinet. Background Art

[0002] For an indoor unit of an air conditioner with the air inlet and the air outlet on the same side, taking an embedded air conditioner as an example, the air inlet and the air outlet are usually on the same plane. This technical solution causes the incoming air flow and the outgoing air flow to easily interfere with each other, thereby resulting in a low air intake efficiency of the indoor unit and high energy consumption. Summary of the Utility Model

[0003] In view of the above problems, the present utility model is proposed to provide an indoor unit of an air conditioner and a cabinet that overcome the above problems or at least partially solve the above problems, aiming to solve the problem that the incoming air flow and the outgoing air flow of the existing indoor unit of an air conditioner are prone to interfere with each other, thereby resulting in a low air intake efficiency of the indoor unit and high energy consumption.

[0004] Specifically, the present utility model provides the following technical solutions:

[0005] An indoor unit of an air conditioner, comprising a housing, a suction fan and a heat exchanger.

[0006] The housing includes a front housing and a rear housing arranged oppositely. An air inlet and an air outlet are arranged at intervals on the front housing. A air duct is connected between the air inlet and the air outlet. The suction fan is located in the air duct, and the inlet side of the suction fan is arranged oppositely to the air inlet. The heat exchanger is located in the air duct and between the outlet side of the suction fan and the air outlet.

[0007] Wherein, the distance between the air inlet and the rear housing is less than 3 / 4 of the distance between the air outlet and the rear housing.

[0008] Optionally, the suction fan is a centrifugal fan. In the cross-section of the meridian plane of the centrifugal fan, the heat exchanger is in a V shape.

[0009] Optionally, the suction fan is a centrifugal fan. In the cross-section of the meridian plane of the centrifugal fan, the heat exchanger is in a Y shape.

[0010] Optionally, the suction fan is a centrifugal fan. In the cross-section of the meridian plane of the centrifugal fan, the heat exchanger is in a U shape.

[0011] Optionally, the width of the heat exchanger along the rotary surface of the centrifugal fan is greater than the thickness of the heat exchanger along the meridian plane of the centrifugal fan.

[0012] Optionally, the indoor unit is arranged vertically, and the air inlet is located below the air outlet.

[0013] The heat exchanger includes a first section and a second section. The lower ends of the first section and the second section are joined together.

[0014] Optionally, the included angle between the first section and the second section is 10 - 30 degrees.

[0015] Optionally, the included angle between the first section and the second section is 15 - 25 degrees.

[0016] Optionally, the suction fan is a centrifugal fan. The centrifugal fan is fixedly connected to the rear shell. The thickness of the outlet side along the meridian plane of the centrifugal fan is less than 4 / 3 of the thickness of the heat exchanger along the meridian plane of the centrifugal fan.

[0017] The air duct includes a flaring channel extending from the outlet side to the air inlet side of the heat exchanger. Along the meridian plane of the centrifugal fan, the thickness of the flaring channel gradually increases.

[0018] Optionally, along the rotating plane of the centrifugal fan, the width of the flaring channel gradually increases.

[0019] Optionally, the minimum distance between the air inlet and the air outlet is greater than 400 mm.

[0020] On the other hand, the present utility model also provides a cabinet. The cabinet includes a cabinet body, at least two cabinet compartments are arranged in the cabinet body, and at least one of the cabinet compartments is provided with the above-mentioned indoor unit of the air conditioner.

[0021] Optionally, the cabinet is vertically arranged. The indoor unit is vertically arranged, and the air inlet is located below the air outlet.

[0022] The cabinet compartment includes a first cabinet compartment and a second cabinet compartment. The indoor unit is located in the first cabinet compartment, and the second cabinet compartment is arranged on the left side and / or the right side of the first cabinet compartment.

[0023] For an indoor unit of an air conditioner according to the present utility model, both the air inlet and the air outlet are located on the front shell. By arranging the air inlet behind the air outlet, the outgoing air flow is not easily disturbed by the incoming air flow in space, which can improve the air intake efficiency of the indoor unit and reduce the energy consumption of the indoor unit. At the same time, since the inlet side of the suction fan is oppositely arranged to the air inlet, the air loss between the air inlet and the inlet side of the incoming air flow can be reduced, further improving the air intake efficiency of the indoor unit and reducing the energy consumption of the indoor unit.

[0024] Furthermore, in the indoor unit of the air conditioner of the present utility model, on the cross-section of the meridian plane of the centrifugal fan, the heat exchanger is in a V shape. By setting the included angle between the first section and the second section to be 10 - 30 degrees, the heat exchange area of the heat exchanger can be increased without increasing the thickness of the heat exchanger, thereby achieving the effect of improving the refrigeration capacity of the indoor unit. Or rather, it realizes that without reducing the refrigeration capacity of the indoor unit, the overall thickness of the indoor unit can be reduced, which is convenient for embedding and installing the indoor unit in the cabinet compartment of the cabinet.

[0025] Those skilled in the art will become more clearly aware of the above and other objects, advantages, and features of the present utility model from the following detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an illustrative but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0028] Figure 2 is a schematic front view of an indoor unit according to an embodiment of the present utility model;

[0029] Figure 3 is a schematic side view of an indoor unit according to an embodiment of the present utility model;

[0030] Figure 4 is a schematic structural diagram of an indoor unit with the front shell hidden according to an embodiment of the present utility model;

[0031] Figure 5 is a schematic sectional view of an indoor unit along a rotating surface according to an embodiment of the present utility model;

[0032] Figure 6 is a schematic sectional view of an indoor unit along a meridian plane according to an embodiment of the present utility model;

[0033] Figure 7 is a schematic front view of a cabinet according to an embodiment of the present utility model.

[0034] LIST OF REFERENCE NUMERALS:

[0035] 100, Indoor unit; 110, Housing; 111, Front case; 112, Rear case; 120, Air inlet; 130, Air outlet; 140, Air duct; 141, Flared channel; 150, Centrifugal fan; 151, Inlet side; 152, Outlet side; 160, Heat exchanger; 164, Air inlet side; 161, First section; 162, Second section; 163, Water pan; 210, Cabinet; 220, First cabinet compartment; 230, Second cabinet compartment. Detailed implementation manners

[0036] The following refers to Figures 1 to 7 to describe the air conditioner indoor unit and the cabinet of the embodiments of the present utility model. In the description of the present embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0037] Unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", "joined", "fixed", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to specific circumstances.

[0038] In addition, in the description of the present embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. That is, in the description of the present embodiment, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath", or "below" the second feature may be the first feature being directly below or obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0039] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Figure 1 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model, as Figure 1 shown, and with reference to Figures 2 - 7 . An embodiment of the present utility model provides an indoor unit of an air conditioner. The indoor unit 100 of the air conditioner includes a housing 110, a suction fan, and a heat exchanger 160.

[0041] The housing 110 includes a front housing 111 and a rear housing 112 that are oppositely arranged. An air inlet 120 and an air outlet 130 are spaced apart on the front housing 111. A duct 140 is connected between the air inlet 120 and the air outlet 130. The suction fan is located in the duct 140, and the inlet side 151 of the suction fan is oppositely arranged with the air inlet 120. The heat exchanger 160 is located in the duct 140 and between the outlet side 152 of the suction fan and the air outlet 130.

[0042] Wherein, the distance L1 from the air inlet 120 to the rear housing 112 is less than 3 / 4 of the distance L2 from the air outlet 130 to the rear housing 112.

[0043] The housing 110 may include a front housing 111, a rear housing 112, side housings, etc. The air outlet 130 and the air inlet 120 are located on the front housing 111. In some embodiments, the front housing 111 may also be referred to as a panel or a front panel.

[0044] The indoor unit 100 can be vertically arranged, horizontally arranged, or inclined. When the indoor unit 100 is vertically arranged, the air outlet 130 can be at the upper or lower part of the front housing 111, and the air inlet 120 can correspondingly be at the lower or upper part of the front housing 111. When the indoor unit 100 is horizontally arranged, the air outlet 130 can be at the left or right part of the front housing 111, and the air inlet 120 can correspondingly be at the right or left part of the front housing 111.

[0045] Since both the air outlet 130 and the air inlet 120 are located on the front shell 111, there is no need to set air inlet or outlet spaces on other sides of the indoor unit 100. The indoor unit 100 can be directly embedded and installed between other buildings or furniture (for example, embedded and installed between two kitchen cabinets, between two wardrobes, between a wardrobe and the roof, etc.), effectively utilizing the indoor space and achieving the effects of improving the applicability and practicality of the indoor unit.

[0046] The front shell 111 may have an inclined plane. The side of the plane with the air outlet 130 is relatively far from the rear shell 112, and the side of the plane with the air inlet 120 is relatively close to the rear shell 112, so that L1 is less than 3 / 4 of L2. The front shell 111 may also have multiple planes including steps or stairs, such as Figure 3 or Figure 6 as shown, so that L1 is less than 3 / 4 of L2. The front shell 111 may also have a rear concave structure, for example, a conical groove is formed around the air inlet 120, so that the distance L1 from the bottom of the groove to the rear shell 112 is less than 3 / 4 of L2.

[0047] In this embodiment, by arranging the air inlet 120 at the rear side of the air outlet 130, a certain spatial isolation is formed between the incoming air flow and the outgoing air flow, so that the outgoing air flow is not easily disturbed by the incoming air flow in space, which can improve the air inlet efficiency of the indoor unit 100 and reduce the energy consumption of the indoor unit 100. On the other hand, when the air inlet 120 is arranged at the rear side of the air outlet 130 and there are no obstacles on both sides of the front shell 111 where the air inlet 120 is located, the air flow on both sides of the housing 110 can also be sucked, thereby increasing the air intake.

[0048] The closer L1 is to L2, for example, when L1 is greater than 3 / 4 of L2, the above-mentioned spatial isolation effect will be weakened. When L1 is smaller than L2, for example, when L1 is less than 3 / 4 of L2, the above-mentioned spatial isolation effect is enhanced. In some embodiments of the present invention, L1 is set to be near 2 / 3 of L2. For example, L2 can be set to 300 mm and L1 can be set to 200 mm. On the one hand, the spatial isolation effect is strong, and on the other hand, it can ensure that the suction fan has a sufficient specification to generate a sufficient exhaust air volume to meet the air inlet and outlet requirements of the indoor unit 100.

[0049] Generally speaking, the wind speed of the outgoing air flow of the indoor unit 100 is greater than that of the incoming air flow. By arranging the air outlet 130 in front of the air inlet 120, the outgoing air flow can be quickly blown out of the indoor unit 100, avoiding the incoming air flow from affecting the outgoing air flow, thereby forming a relatively long blowing distance.

[0050] In this embodiment, the suction fan can be a centrifugal fan, an axial flow fan, a cross-flow fan, etc. Since the inlet side 151 of the suction fan is disposed opposite to the air inlet 120, the air loss between the air inlet 120 and the inlet side 151 of the incoming air flow can be reduced, and the air intake efficiency of the indoor unit 100 can be further improved.

[0051] In some embodiments of the indoor unit of the present utility model, such as Figure 6 shown, the suction fan is a centrifugal fan 150. In the cross-section of the meridian plane of the centrifugal fan 150, the heat exchanger 160 is in a V shape.

[0052] The meridian plane is any plane passing through the axis line of the centrifugal fan 150. Figure 6 A meridian plane passing through the axis line of the centrifugal fan 150 and the heat exchanger 160 is selected. The axis line of the centrifugal fan 150 extends in the front-rear direction, so that the inlet side 151 of the centrifugal fan 150 is directly opposite to the air inlet 120, thereby reducing the intake air loss.

[0053] The two heat exchange surfaces of the heat exchanger 160 are in a V shape, and its small end can be at one end close to the centrifugal fan 150 or at one end far from the centrifugal fan 150. At the small end, the ends of the two heat exchange surfaces of the heat exchanger 160 can be connected or spaced, and there is no limitation here.

[0054] In the same heat exchange space, compared with a flat heat exchanger, the V-shaped heat exchanger 160 can have a larger heat exchange area, thereby improving the refrigeration capacity of the indoor unit 100.

[0055] In some embodiments of the indoor unit of the present utility model, such as Figure 4 and Figure 6 shown, the indoor unit 100 is vertically arranged, and the air inlet 120 is located below the air outlet 130.

[0056] The heat exchanger 160 includes a first section 161 and a second section 162. The lower ends of the first section 161 and the second section 162 are connected.

[0057] The first section 161 and the second section 162 can have the same or different specifications. Exemplarily, the flow rate of the air duct 140 at the second section 162 is greater than that at the first section 161. Therefore, the thickness of the second section 162 can be set to be greater than the thickness of the first section 161 to increase the heat exchange area of the second section 162, thereby improving the overall heat exchange effect of the heat exchanger 160.

[0058] In this embodiment, the centrifugal fan 150 is located below the heat exchanger 160, and the V-shaped opening of the heat exchanger 160 faces upward. On the one hand, at the junction of the lower ends of the first section 161 and the second section 162, it can guide and split the air flow at the outlet side 152 of the centrifugal fan 150. On the other hand, only one water receiving tray 163 needs to be provided at the junction of the lower ends of the first section 161 and the second section 162. The water receiving tray 163 can hold the condensed water generated by the heat exchanger 160 and prevent the condensed water from dripping downward into the centrifugal fan 150.

[0059] Since the water receiving tray 163 is located below the small end of the V shape of the heat exchanger 160, when splitting the air flow at the outlet side 152 of the centrifugal fan 150, the cold quantity of the condensed water can also be utilized to preliminarily cool the air flow, thereby improving the refrigeration effect of the indoor unit 100. Further, the water receiving tray 163 can be made of a material with good heat conduction performance to effectively utilize the cold quantity of the condensed water to cool the air flow and further improve the refrigeration effect of the indoor unit 100.

[0060] In some embodiments of the indoor unit of the present utility model, such as Figure 6 shown, the included angle α between the first section 161 and the second section 162 is 10 - 30 degrees.

[0061] By setting the included angle α between the first section 161 and the second section 162 to be 10 - 30 degrees, the heat exchange area of the heat exchanger 160 can be increased without increasing the total thickness L4 of the heat exchanger 160, thereby achieving the effect of improving the refrigeration capacity of the indoor unit 100. Or rather, without reducing the refrigeration capacity of the indoor unit 100, the overall thickness of the indoor unit 100 can be reduced, facilitating the embedded installation of the indoor unit 100 in the cabinet grid of the cabinet.

[0062] The smaller the included angle α, the smaller the total thickness L4 of the heat exchanger 160, but the cross-sectional area of the air duct 140 will be compressed. At the same flow rate, the air flow velocity is relatively fast, and the contact time with the heat exchanger 160 is relatively short, which will reduce the heat exchange effect of the heat exchanger 160 to a certain extent. The larger the included angle α, although it will improve the heat exchange effect of the heat exchanger 160 to a certain extent, it will increase the total thickness L4 of the heat exchanger 160, and further increase the overall thickness of the indoor unit 100. 10 - 30 degrees is a better range after comprehensively weighing the above factors.

[0063] In some embodiments of the indoor unit of the present utility model, the included angle α between the first section 161 and the second section 162 is 15 - 25 degrees. In this way, a better balance can be achieved between reducing the total thickness L4 of the heat exchanger 160 and improving the heat exchange effect.

[0064] In some embodiments of the indoor unit of the present utility model, the suction fan is a centrifugal fan 150. In the cross-section of the meridional plane of the centrifugal fan 150, the heat exchanger 160 is in a Y shape. Different from the V-shaped heat exchanger 160, in the Y-shaped heat exchanger 160, the two heat exchange surfaces are not connected at the ends or spaced apart, but one heat exchange surface is connected and arranged in the middle of the other heat exchange surface. In this way, the structural design of the heat exchanger 160 is more flexible, facilitating the rational utilization of the shape of the air duct 140, the relative positional relationship between the centrifugal fan 150 and the air outlet 130, etc., and reducing the space occupied by the heat exchanger 160 without affecting the total heat exchange area.

[0065] In some embodiments of the indoor unit of the present utility model, the suction fan is a centrifugal fan 150. In the cross-section of the meridional plane of the centrifugal fan 150, the heat exchanger 160 is in a U shape.

[0066] In this embodiment, the two heat exchange surfaces of the heat exchanger 160 are formed by bending one heat exchange surface, which has good heat exchange efficiency and is convenient for production and installation.

[0067] In some embodiments of the indoor unit of the present utility model, as Figures 5 - 6 shown, the width L3 of the heat exchanger 160 along the circumferential plane of the centrifugal fan 150 is greater than the thickness L4 of the heat exchanger 160 along the meridional plane of the centrifugal fan 150.

[0068] In this embodiment, the heat exchanger 160 has a relatively large width L3. In this way, without changing the total heat exchange area, the total thickness L4 of the heat exchanger 160 can be reduced, and further the overall thickness of the indoor unit 100 can be reduced, facilitating the embedded installation of the indoor unit 100 in the cabinet compartment of the cabinet.

[0069] In some embodiments of the indoor unit of the present utility model, as Figure 6 shown, the suction fan is a centrifugal fan 150. The centrifugal fan 150 is fixedly connected to the rear shell 112. The thickness L5 of the outlet side 152 along the meridional plane of the centrifugal fan 150 is less than 4 / 3 of the thickness L4 of the heat exchanger 160 along the meridional plane of the centrifugal fan 150.

[0070] The air duct 140 includes a flared channel 141 extending from the outlet side 152 to the inlet side 164 of the heat exchanger 160. Along the meridional plane of the centrifugal fan 150, the thickness L6 of the flared channel 141 gradually increases.

[0071] The centrifugal fan 150 is fixedly connected to the rear shell 112, which can simplify the installation structure of the centrifugal fan 150 and eliminate the need for an additional installation bracket. On the other hand, the distance between the inlet side 151 of the centrifugal fan 150 and the rear shell 112 can be compressed, thereby reducing the distance L1 between the air inlet 120 and the rear shell 112.

[0072] By appropriately restricting the thickness L5 of the outlet side 152, the wind speed and dynamic pressure on the air outlet side can be appropriately increased, thereby increasing the air intake volume on the inlet side 151.

[0073] The flared channel 141 is used to convert the kinetic energy of the air flow outside the outlet side 152 into static pressure, and is blown out through the air duct 140 and the air outlet 130. In this embodiment, the thickness L6 of the flared channel 141 gradually expands forward as the distance from the outlet side 152 increases, which can increase the size of the air inlet side 164 of the heat exchanger 160. In particular, the air flow can be guided to the front part of the air inlet side 164 of the V-shaped heat exchanger 160 to effectively utilize the first section 161 for heat exchange.

[0074] In some embodiments of the indoor unit of the present utility model, such as Figure 5 shown, along the rotating surface of the centrifugal fan 150, the width L7 of the flared channel 141 gradually expands.

[0075] The rotating surface is any plane perpendicular to the axis line of the centrifugal fan 150. Both the thickness L6 and the width L7 of the flared channel 141 gradually expand as the distance from the outlet side 152 increases, and the kinetic energy of the air flow can be converted into static pressure.

[0076] In some embodiments of the indoor unit of the present utility model, such as Figure 2 shown, the minimum interval L8 between the air inlet 120 and the air outlet 130 is greater than 400 mm.

[0077] In this embodiment, on the vertical plane projection surface, L8 is greater than 400 mm. In this way, on the basis of separating the air inlet 120 and the air outlet 130 in the front-back distance, separating the air inlet 120 and the air outlet 130 in the direction along the vertical plane can further prevent the incoming air flow and the outgoing air flow from interfering with each other, and improve the incoming air efficiency and the outgoing air efficiency.

[0078] In some embodiments of the cabinet of the present utility model, such as Figure 7 shown, the cabinet includes a cabinet body 210, and at least two cabinet compartments are provided in the cabinet body 210, and at least one cabinet compartment is provided with the above-mentioned air conditioner indoor unit 100.

[0079] In this embodiment, the cabinet is a piece of furniture for placing items, and can be a kitchen cabinet, a wardrobe, an electrical cabinet, etc. In terms of the installation angle, the cabinet can be set horizontally, vertically, obliquely, etc. In terms of the installation method, the cabinet can be a floor-standing type, a wall-mounted type, a ceiling-mounted type, etc.

[0080] There are at least two compartments provided inside the cabinet body 210, and at least one compartment opens forward to install the indoor unit 100 therein. At least one other compartment is for placing items. It should be understood that except for the compartment for installing the indoor unit 100, the opening directions of other compartments are not limited, for example, they can open forward, downward, upward, etc. Covers such as cabinet doors can also be provided at the openings of the compartments.

[0081] In this embodiment, by installing the indoor unit 100 inside the cabinet, the indoor space can be utilized flexibly and effectively, and the consistency of the furniture design style can be improved.

[0082] In some embodiments of the cabinet of the present utility model, a cabinet door is further covered on the front side of the compartment where the indoor unit 100 is located, and the cabinet door has air vents opposite to the air inlet 120 and the air outlet 130. In this way, on the one hand, the hidden installation of the indoor unit 100 can be realized, and on the other hand, components such as panels and decorative plates for improving the appearance do not need to be provided on the indoor unit 100, reducing the production cost.

[0083] In some embodiments of the cabinet of the present utility model, as Figure 7 shown, the cabinet is vertically arranged. The indoor unit 100 is vertically arranged, and the air inlet 120 is located below the air outlet 130.

[0084] The compartment includes a first compartment 220 and a second compartment 230. The indoor unit 100 is located inside the first compartment 220, and the second compartment 230 is provided on the left side and / or the right side of the first compartment 220.

[0085] In this embodiment, the first compartment 220 opens forward and is used to install the indoor unit 100. The second compartment 230 is for placing items. The second compartment 230 can be one or more, and can be on the left side or the right side or both sides of the first compartment 220, or can also be on the upper side or the lower side of the first compartment 220. Users can flexibly select or customize the layout of the first compartment 220 and the second compartment 230 inside the cabinet according to their needs.

[0086] So far, those skilled in the art should recognize that although multiple exemplary embodiments of the present utility model have been shown and described in detail herein, still, without departing from the spirit and scope of the present utility model, many other variations or modifications that conform to the principles of the present utility model can be directly determined or derived based on the content disclosed in the present utility model. Therefore, the scope of the present utility model should be understood and determined to cover all these other variations or modifications.

Claims

1. An air conditioner indoor unit, characterized in that: include: A housing, the housing comprising a front housing and a rear housing arranged opposite to each other; an air inlet and an air outlet are arranged on the front housing at intervals; an air duct is connected between the air inlet and the air outlet; An air suction fan, the air suction fan is located in the air duct, and the inlet side of the air suction fan is arranged opposite to the air inlet; a heat exchanger, the heat exchanger being located in the air duct and between the outlet side of the air suction fan and the air outlet; Wherein, the distance between the air inlet and the rear shell is less than 3 / 4 of the distance between the air outlet and the rear shell.

2. The indoor unit according to claim 1, characterized in that: The suction fan is a centrifugal fan; In the cross section of the meridian plane of the centrifugal fan, the heat exchanger is V-shaped, Y-shaped or U-shaped.

3. The indoor unit according to claim 2, characterized in that: The width of the heat exchanger along the rotation surface of the centrifugal fan is greater than the thickness of the heat exchanger along the meridian surface of the centrifugal fan.

4. The indoor unit according to claim 2, characterized in that: The indoor unit is arranged vertically, and the air inlet is located below the air outlet; The heat exchanger includes a first section and a second section; the lower ends of the first section and the second section are connected.

5. The indoor unit according to claim 4, characterized in that: The included angle between the first section and the second section is 10-30 degrees.

6. The indoor unit according to claim 1, characterized in that: The suction fan is a centrifugal fan; the centrifugal fan is fixedly connected to the rear shell; the thickness of the outlet side along the meridian plane of the centrifugal fan is less than 4 / 3 of the thickness of the heat exchanger along the meridian plane of the centrifugal fan; The air duct comprises a flared channel extending from the outlet side to the air inlet side of the heat exchanger; along the meridian plane of the centrifugal fan, the thickness of the flared channel gradually increases.

7. The indoor unit according to claim 6, characterized in that: Along the rotating surface of the centrifugal fan, the width of the expansion channel gradually expands.

8. The indoor unit according to claim 1, characterized in that: The minimum distance between the air inlet and the air outlet is greater than 400 mm.

9. A cabinet, characterized in that: The invention comprises a cabinet body, wherein at least two cabinet compartments are arranged in the cabinet body, and an indoor unit of the air conditioner according to any one of claims 1 to 8 is arranged in at least one of the cabinet compartments.

10. The cabinet according to claim 9, characterized in that: The cabinet is arranged vertically; the indoor unit is arranged vertically, and the air inlet is located below the air outlet; The cabinet comprises a first cabinet and a second cabinet, the indoor unit is located in the first cabinet, and the second cabinet is arranged on the left side and / or the right side of the first cabinet.

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