Air conditioner indoor unit and air conditioner

Abstract

The utility model discloses an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a base plate, an air conditioner indoor unit body and an air conditioner indoor unit body, the base plate comprises a front volute part and a rear volute part, and a mounting cavity is formed between the front volute part and the rear volute part; the cross-flow wind wheel is mounted in the mounting cavity and comprises an end plate positioned at the end part; the front volute part is provided with a limiting boss protruding towards the inner side of the mounting cavity, the limiting boss and the end plate are correspondingly arranged in the radial direction of the cross-flow wind wheel, and a radial interval is formed between the limiting boss and the end plate. By arranging the limiting boss, when the cross-flow wind wheel falls off or falls off, the end plate at the end of the cross-flow wind wheel can firstly collide with the limiting boss, so that the problems that the fan blades of the cross-flow wind wheel collide with the base plate, the fan blades are broken due to collision, the service life of the cross-flow wind wheel is affected and the like are solved, and normal operation of the air conditioner indoor unit is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and more particularly to an air conditioner indoor unit and an air conditioner. BACKGROUND

[0002] In some air conditioner indoor units, the cross-flow fan wheel is welded together by equidistant fan blades through end plates at both ends and a partition plate in the middle. When falling impact occurs, because the shape of the fan blade is a thin sheet type, the material of the fan blade is Acrylonitrile-Styrene Copolymer (AS) with glass fiber reinforcement, which has the material characteristics of not deforming and being relatively brittle, so the fan blade is easily damaged by impact force. CONTENT OF THE UTILITY MODEL

[0003] The air conditioner indoor unit provided by the embodiments of the present application comprises:

[0004] a chassis comprising a front volute portion and a rear volute portion, and a mounting cavity being formed between the front volute portion and the rear volute portion; and

[0005] a cross-flow fan wheel being mounted in the mounting cavity and comprising end plates at end portions;

[0006] The front volute portion is provided with a limiting boss protruding towards the inside of the mounting cavity, the limiting boss and the end plates are arranged in one-to-one correspondence along the radial direction of the cross-flow fan wheel, and there is a radial interval between the limiting boss and the end plates.

[0007] In some exemplary embodiments, both axial ends of the cross-flow fan wheel are provided with the end plates, and the cross-flow fan wheel further comprises a plurality of middle sections, and the plurality of middle sections are arranged in sequence between the two end plates along the axial direction of the cross-flow fan wheel.

[0008] The minimum radial interval between the end plates and the limiting boss is smaller than the minimum radial interval between the middle sections and the front volute portion.

[0009] In some exemplary embodiments, the end face of the protruding end of the limiting boss is a flat surface.

[0010] In some exemplary embodiments, the minimum radial interval between the end plates and the limiting boss is 3.5-4 mm.

[0011] In some exemplary embodiments, the minimum radial interval between the middle sections and the front volute portion is greater than 4.5 mm.

[0012] In some exemplary embodiments, the front volute portion is provided with two limiting bosses, and the two limiting bosses and the two end plates at the axial ends of the cross-flow fan wheel are arranged in one-to-one correspondence along the radial direction of the cross-flow fan wheel.

[0013] In some example embodiments, the end plate is a solid plate.

[0014] In some example embodiments, the middle section comprises a ring-shaped partition plate and a plurality of fan blades, one end of the plurality of fan blades of the middle section is connected to the partition plate of the middle section and is distributed along the circumference of the partition plate, the other end of the plurality of fan blades of the middle section is connected to the partition plate of another middle section adjacent to the middle section or connected to the end plate adjacent to the middle section.

[0015] In some example embodiments, the air conditioner further comprises:

[0016] a bearing seat mounted on the bottom plate, one end of the cross-flow fan being supported on the bearing seat; and

[0017] a fan motor mounted on the bottom plate, the other end of the cross-flow fan being connected to a motor shaft of the fan motor.

[0018] The embodiments of the present application also provide an air conditioner comprising the air conditioner indoor unit described in any of the above embodiments.

[0019] The air conditioner indoor unit of the embodiments of the present application, the cross-flow fan is installed in the installation cavity formed between the front volute part and the rear volute part of the bottom plate, when the cross-flow fan falls or drops, the cross-flow fan has the risk of colliding with the bottom plate (such as the front volute part of the bottom plate). Therefore, a limiting boss protruding towards the inside of the installation cavity is arranged on the front volute part, the limiting boss is arranged corresponding to the end plate of the end part of the cross-flow fan in the radial direction of the cross-flow fan (i.e. the projection of the limiting boss and the end plate of the end part of the cross-flow fan on the axis of the cross-flow fan at least partially overlaps), so that when the cross-flow fan falls or drops, the end plate of the end part of the cross-flow fan can collide with the limiting boss first, avoiding the fan blades of the cross-flow fan colliding with the bottom plate, preventing the fan blades from being damaged, affecting the service life of the cross-flow fan, and other problems, and ensuring the normal operation of the air conditioner indoor unit.

[0020] The limiting boss and the end plate of the cross-flow fan have a radial spacing in the radial direction of the cross-flow fan, so that when the cross-flow fan works normally, the limiting boss and the end plate of the rotating cross-flow fan do not contact and do not rub, and do not affect the normal working of the cross-flow fan.

[0021] Other features and advantages of the present application will be described in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.

[0023] Figure 1 A structural schematic view of the air conditioner indoor unit of the embodiments of the present application;

[0024] Figure 2 is an enlarged schematic view of the A portion structure of Figure 1

[0025] Figure 3 is an enlarged schematic view of the B portion structure of Figure 1

[0026] Figure 4 is another structural schematic view of the indoor unit of the air conditioner according to the embodiment of the present application;

[0027] Figure 5 is a C-C direction sectional structural schematic view of Figure 4

[0028] Figure 6 is a D-D direction sectional structural schematic view of Figure 4

[0029] Figure 7 is a structural schematic view of the chassis of the indoor unit of the air conditioner according to the embodiment of the present application.

[0030] Reference signs:

[0031] 1 - chassis, 11 - front volute portion, 12 - rear volute portion, 13 - mounting cavity, 14 - limiting boss, 2 - cross-flow fan, 21 - end plate, 22 - middle section, 221 - partition plate, 222 - fan blade, 3 - bearing seat, 4 - fan motor. DETAILED DESCRIPTION

[0032] The present application describes a plurality of embodiments, but the description is exemplary rather than limiting, and it is obvious to those skilled in the art that there can be more embodiments and implementation schemes within the scope of the embodiments described in the present application. Although many possible combinations of features are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment can be used in combination with any other feature or element of any other embodiment, or can replace any other feature or element of any other embodiment.

[0033] ​​​​This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed herein can also be combined with any conventional feature or element to form unique utility patent solutions. Any feature or element of any embodiment can also be combined with features or elements from other utility patent solutions to form another unique utility patent solution. Therefore, it is to be understood that any feature shown and / or discussed in this application can be realized alone or in any appropriate combination. Thus, the embodiments are not to be limited by any of the foregoing, except in accordance with the following claims, and their equivalents.

[0034] The embodiments of the present application provide an air conditioner indoor unit, as shown in the drawings, comprising a base plate 1 and a cross-flow fan 2. Figures 1-7 The base plate 1 comprises a front volute portion 11 and a rear volute portion 12, and a mounting cavity 13 is formed between the front volute portion 11 and the rear volute portion 12, and the cross-flow fan 2 is mounted in the mounting cavity 13.

[0035] The base plate 1 comprises a front volute portion 11 and a rear volute portion 12, and a mounting cavity 13 is formed between the front volute portion 11 and the rear volute portion 12, and the cross-flow fan 2 is mounted in the mounting cavity 13.

[0036] The cross-flow fan 2 comprises an end plate 21 at the end portion, the front volute portion 11 is provided with a limiting boss 14 protruding towards the inside of the mounting cavity 13, the limiting boss 14 is arranged corresponding to the end plate 21 along the radial direction of the cross-flow fan 2, and there is a radial interval between the limiting boss 14 and the end plate 21.

[0037] The air conditioner indoor unit of the embodiments of the present application, the cross-flow fan 2 is mounted in the mounting cavity 13 formed between the front volute portion 11 and the rear volute portion 12 of the base plate 1, when the cross-flow fan 2 falls or drops, there is a risk of the cross-flow fan 2 colliding with the front volute portion 11 of the base plate 1. Therefore, a limiting boss 14 protruding towards the inside of the mounting cavity 13 is arranged on the front volute portion 11, the limiting boss 14 is arranged corresponding to the end plate 21 at the end portion of the cross-flow fan 2 along the radial direction of the cross-flow fan 2 (i.e. the projection of the limiting boss 14 and the end plate 21 at the end portion of the cross-flow fan 2 on the axis of the cross-flow fan 2 at least partially overlaps), so that when the cross-flow fan 2 falls or drops, the end plate 21 at the end portion of the cross-flow fan 2 can collide with the limiting boss 14 first, avoiding the impeller 222 of the cross-flow fan 2 colliding with the base plate 1, preventing the impeller 222 from being damaged, affecting the service life of the cross-flow fan 2, and other problems, and ensuring the normal operation of the air conditioner indoor unit.

[0038] The limiting boss 14 and the end plate 21 of the cross-flow fan 2 have a radial interval along the radial direction of the cross-flow fan 2, so that when the cross-flow fan 2 is working normally, the limiting boss 14 and the end plate 21 of the rotating cross-flow fan 2 do not contact and do not rub, and do not affect the normal working of the cross-flow fan 2.

[0039] In some exemplary embodiments, as shown in the drawings, Figures 1-3As shown, the axial both ends of the cross-flow impeller 2 are provided with end plates 21, and the cross-flow impeller 2 further includes a plurality of middle sections 22 which are sequentially arranged between the two end plates 21 along the axial direction of the cross-flow impeller 2. Among them, the minimum radial interval S1 (see Figure 2 ) between the end plate 21 and the limiting boss 14 is less than the minimum radial interval S2 (see Figure 2 ) between the middle section 22 and the front volute part 11.

[0040] The plurality of middle sections 22 are arranged between the two end plates 21 of the cross-flow impeller 2, and each middle section 22 can include an annular partition plate 221 and a plurality of blades 222. One end of each blade 222 of the middle section 22 is connected to the partition plate 221 of the middle section 22 and is distributed (e.g., uniformly distributed) along the circumferential direction of the partition plate 221. The other end of each blade 222 of the middle section 22 is connected to the partition plate 221 of another middle section 22 adjacent to the middle section 22, or is connected to the end plate 21 adjacent to the middle section 22. The number of blades 222 of different middle sections 22 can be the same or different.

[0041] The minimum radial interval S1 between the end plate 21 and the limiting boss 14 is less than the minimum radial interval (i.e., the minimum radial interval between the partition plate 221 of the middle section 22 and the front volute part 11) S2 between the middle section 22 and the front volute part 11, that is, the distance between the limiting boss 14 and the end plate 21 of the cross-flow impeller 2 is closer than the distance between the middle section 22 in the middle of the cross-flow impeller 2 and the bottom plate 1. Therefore, when the cross-flow impeller 2 falls or is impacted by inertia, the end plate 21 of the cross-flow impeller 2 will collide with the limiting boss 14 of the bottom plate 1 first, avoiding the blades 222 in the middle of the cross-flow impeller 2 from colliding with the bottom plate 1, and preventing the cross-flow impeller 2 from being damaged by collision.

[0042] In some example embodiments, the minimum radial interval S1 between the end plate 21 and the limiting boss 14 is set to 3.5mm-4mm, and the minimum radial interval S2 between the middle section 22 and the front volute part 11 is set to 4.5mm or more. For example, S1 can be 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, etc., and S2 can be 4.5mm, 4.8mm, etc.

[0043] Setting S1 to 3.5mm-4mm and S2 to 4.5mm or more can not only ensure that the cross-flow impeller 2 will not contact the limiting boss 14 or the front volute part 11 due to vibration when the cross-flow impeller 2 is working normally, but also avoid the impact force between the end plate 21 of the cross-flow impeller 2 and the limiting boss 14 being too large due to S1 being too large, so that the overall structure of the air conditioner indoor unit is compact.

[0044] Of course, the range of S1 and S2 is not limited to the above, and can be adjusted according to actual needs.

[0045] In some example embodiments, the end face of the protruding end of the limiting boss 14 is a flat surface.

[0046] The end face of the protruding end of the limiting boss 14 is a plane, which can collide with the end plate 21 when the cross-flow fan 2 falls. Since the end face of the protruding end of the limiting boss 14 is a plane and the circumferential surface of the end plate 21 of the cross-flow fan 2 is a cylindrical surface, the radial distance between different parts of the plane and the circumferential surface of the end plate 21 of the cross-flow fan 2 is different, and the minimum radial distance between the plane of the limiting boss 14 and the circumferential surface of the end plate 21 in the radial direction of the cross-flow fan 2 is the minimum radial distance S1 between the end plate 21 and the limiting boss 14.

[0047] The end face of the protruding end of the limiting boss 14 is a plane, which facilitates the molding of the limiting boss 14. Of course, the end face of the protruding end of the limiting boss 14 is not limited to a plane, but can also be other curved surfaces, such as a circular arc surface, etc.

[0048] In some example embodiments, as shown in Figures 1-7 The front volute part 11 is provided with two limiting bosses 14, and the two limiting bosses 14 are arranged one by one corresponding to the two end plates 21 at the axial two ends of the cross-flow fan 2 in the radial direction of the cross-flow fan 2.

[0049] In order to avoid the hidden danger of damage to the fan blades 222 of the cross-flow fan 2 when the cross-flow fan 2 falls, a limiting boss 14 is designed on the left and right sides of the front volute part 11 of the chassis 1, so that the limiting boss 14 collides with the two end plates 21 at the axial two ends of the cross-flow fan 2 first, avoiding the fan blades 222 of the cross-flow fan 2 from colliding with the chassis 1, and preventing the problem of the cross-flow fan 2 being smashed.

[0050] In some example embodiments, the two end plates 21 at the axial two ends of the cross-flow fan 2 are solid plates.

[0051] Since the two end plates 21 at the axial two ends of the cross-flow fan 2 are solid plates, the strength is large, so when the cross-flow fan 2 falls and the end plate 21 collides with the limiting boss 14, the end plate 21 will not be cracked due to the instantaneous impact inertia, thereby protecting the cross-flow fan 2 from being damaged and ensuring the normal operation of the air conditioner indoor unit.

[0052] In some example embodiments, as shown in Figure 1 The air conditioner indoor unit further includes a bearing seat 3 and a fan motor 4. The bearing seat 3 is installed on the chassis 1, and one end of the cross-flow fan 2 is supported on the bearing seat 3; the fan motor 4 is installed on the chassis 1, and the other end of the cross-flow fan 2 is connected with the motor shaft of the fan motor 4.

[0053] One end (such as the left end) of the cross-flow fan 2 can be fixed with the left side shaft of the cross-flow fan 2 through the bearing seat 3 arranged on the left side of the mounting cavity 13, and the other end (such as the right end) of the cross-flow fan 2 can be fixed with the right side shaft hole of the cross-flow fan 2 through the motor shaft of the fan motor 4 arranged on the right side of the mounting cavity 13, so that the fan motor 4 can drive the cross-flow fan 2 to rotate.

[0054] In some example embodiments, the air conditioner indoor unit can be a ceiling type.

[0055] The embodiments of the present application further provide an air conditioner, which comprises the air conditioner indoor unit according to any one of the above embodiments.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0057] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include at least one of the features.

[0058] In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0059] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0061] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative 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 any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. An indoor unit of an air conditioner, characterized by comprising: The air conditioner indoor unit comprises: a chassis comprising a front volute portion and a rear volute portion, and a mounting cavity formed between the front volute portion and the rear volute portion; and a tubular wind wheel mounted in the mounting cavity and comprising end plates at ends thereof; the front volute portion is provided with a limiting boss protruding towards the inside of the mounting cavity, the limiting boss is arranged in correspondence with the end plates along the radial direction of the tubular wind wheel, and the limiting boss and the end plates have a radial spacing therebetween.

2. The air conditioner indoor unit according to claim 1, characterized by, Both axial ends of the tubular wind wheel are provided with the end plates, and the tubular wind wheel further comprises a plurality of middle sections arranged in sequence along the axial direction of the tubular wind wheel between the two end plates; the minimum radial spacing between the end plates and the limiting boss is smaller than the minimum radial spacing between the middle sections and the front volute portion. 3.The indoor unit of claim 2, wherein, The end face of the protruding end of the limiting boss is a plane. 4.The indoor unit of claim 2, wherein, The minimum radial spacing between the end plates and the limiting boss is 3.5-4 mm. 5.The indoor unit of claim 2, wherein, The minimum radial spacing between the middle sections and the front volute portion is greater than 4.5 mm. 6.The air conditioner indoor unit according to any one of claims 1 to 5, characterized by, The front volute portion is provided with two limiting bosses, and the two limiting bosses and the two end plates at the axial ends of the tubular wind wheel are arranged in one-to-one correspondence along the radial direction of the tubular wind wheel. 7.The air conditioner indoor unit according to any one of claims 1 to 5, characterized by, The end plates are solid plates. 8.The air conditioner indoor unit according to any one of claims 2 to 5, characterized by, The middle sections comprise annular partition plates and a plurality of fan blades, one end of each of the plurality of fan blades of the middle section is connected to the partition plate of the middle section and is distributed along the circumferential direction of the partition plate, and the other end of each of the plurality of fan blades of the middle section is connected to the partition plate of another middle section adjacent to the middle section or to the end plate adjacent to the middle section. 9.The air conditioner indoor unit according to any one of claims 1 to 5, characterized by, Further comprising: a bearing seat mounted on the chassis, one end of the tubular wind wheel being supported on the bearing seat; and a wind wheel motor mounted on the chassis, the other end of the tubular wind wheel being connected to the motor shaft of the wind wheel motor.

10. An air conditioner characterized by comprising: The air conditioner indoor unit comprises the air conditioner indoor unit according to any one of claims 1-9.

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