Air duct assembly for air conditioner and air conditioner indoor unit

Abstract

The utility model provides an air duct assembly for an air conditioner and an air conditioner indoor unit. Wherein the second motor shell part and the first motor shell part are connected through a first fixing device; the rear middle supporting part is arranged on the rear side of the front middle supporting part, and the rear middle supporting part and the front middle supporting part are connected through a second fixing device; each first supporting frame is arranged on the rear side of the corresponding second supporting frame, and each first supporting frame and the corresponding second supporting frame are connected through a third fixing device. According to the air duct assembly and the air conditioner indoor unit, due to the fact that the air duct assembly and the air conditioner indoor unit have multiple positioning modes, positioning can be conducted at multiple positions, mutual positioning of the first structural part and the second structural part in the connecting process can be facilitated, assembly errors caused by installation dislocation can be prevented, it is guaranteed that installation is in place, and the service life of the air duct assembly is prolonged. Therefore, the assembling efficiency of the air duct assembly can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air duct component used for an air conditioner and an indoor unit of the air conditioner. Background Art

[0002] Air conditioners are indispensable electrical equipment in people's work, production and daily life. Therefore, air conditioners need to be mass-produced to meet social needs. The air duct assembly of the indoor unit of the existing air conditioner includes a front air duct part and a rear air duct part. The front air duct part defines a mounting cavity with an opening facing forward, and the rear air duct part defines a mounting cavity with an opening facing backward. The two mounting cavities are arranged opposite to each other to define a motor mounting cavity. The existing front and rear air duct fixing scheme will cause the components to be installed improperly, affecting the quality of the air conditioner. For example, the motor in the motor cavity will not be installed properly. The improper installation of components will reduce the service life of the air conditioner. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide an air duct assembly and an air conditioner indoor unit for an air conditioner that overcome the above problems or at least partially solve the above problems, so that components such as motors can be installed in place to ensure the quality of air conditioning.

[0004] Specifically, the utility model provides an air duct assembly for an air conditioner, which comprises a first structural member and a second structural member;

[0005] The first structural member includes a first air duct portion and a first motor housing portion arranged at one end of the first air duct portion; the second structural member includes a second air duct portion and a second motor housing portion arranged at one end of the second air duct portion; the second air duct portion is arranged at the front side of the first air duct portion, and the second motor housing portion is arranged at the front side of the first motor housing portion;

[0006] The first air duct portion includes a rear middle support portion and two first support frames; the two first support frames are arranged on both sides of the rear middle support portion;

[0007] The second air duct portion has a front middle support portion and two second support frames; the two second support frames are arranged on both sides of the front middle support portion;

[0008] The second motor housing portion and the first motor housing portion are connected via a first fixing device;

[0009] The rear middle support portion is arranged at the rear side of the front middle support portion, and the rear middle support portion and the front middle support portion are connected by a second fixing device;

[0010] Each of the first supporting frames is arranged on the rear side of the corresponding second supporting frame, and each of the first supporting frames is connected to the corresponding second supporting frame via a third fixing device.

[0011] Optionally, the first air duct portion further includes a first end structure; the first end structure is arranged at one end of the rear middle support portion, and the first motor housing portion is arranged at the other end of the rear middle support portion;

[0012] The second air duct portion further includes a second end structure; the second end structure is arranged at one end of the front middle support portion, and the second motor housing portion is arranged at the other end of the front middle support portion;

[0013] The second end structure is arranged at the front side of the first end structure, and the second end structure is connected to the first end structure at the middle thereof through a fourth fixing device.

[0014] Optionally, the second motor housing is connected to the first motor housing via the first fixing device at its middle and both ends along the transverse direction.

[0015] Optionally, the first motor housing portion and the second motor housing portion jointly define a motor installation cavity for installing the motor, or the first motor housing portion, the second motor housing portion, the first air duct portion and the second air duct portion jointly define a motor installation cavity for installing the motor;

[0016] There are two motor installation cavities, which are arranged in sequence along the transverse direction; the two motor installation cavities are located on both sides of the rear middle support portion;

[0017] The first fixing device is provided between the two motor installation cavities, and the first fixing device is also provided on both sides of the two motor installation cavities.

[0018] Optionally, a plurality of first slots and a plurality of first protrusions are formed on the surface of the first end structure facing the second end structure, and a plurality of second slots and a plurality of second protrusions are formed on the surface of the second end structure facing the first end structure, each of the first protrusions is inserted into one of the second slots, and each of the second protrusions is inserted into one of the first slots.

[0019] Optionally, one of the first end structure and the second end structure is provided with a positioning block or a positioning pin, and the other is provided with a positioning groove or a positioning surface extending in the front-rear direction;

[0020] The positioning block or the positioning pin is inserted into the positioning groove, or the positioning block or the positioning pin contacts and abuts against the positioning surface.

[0021] Optionally, the plurality of first protrusions include two wind wheel shaft mounting portions, the wind wheel shaft mounting portions are configured to mount one end of the crossflow wind wheel; the two wind wheel shaft mounting portions are located on both sides of the rear middle support portion; the front surface of each wind wheel shaft mounting portion is an arcuate surface; a first slot is formed between the two arcuate surfaces, and the two arcuate surfaces are connected by a plane; the plurality of second slots include two arcuate slots respectively cooperating with the wind wheel shaft mounting portions.

[0022] Optionally, the front side of the rear middle support portion is provided with a convex strip extending along the length direction of the rear middle support portion, and the front side of the front middle support portion is provided with a convex strip groove extending along the length direction of the front middle support portion, and the convex strip is inserted into the convex strip groove; or,

[0023] The front side of the rear middle support portion is provided with a convex groove extending along the length direction of the rear middle support portion, and the front side of the front middle support portion is provided with a convex strip extending along the length direction of the front middle support portion, and the convex strip is inserted into the convex groove.

[0024] Optionally, one of the first motor housing and the second motor housing is provided with a positioning column, and the other is provided with a positioning hole, and the positioning column is inserted into the positioning hole;

[0025] There are three positioning columns, one of which is arranged between two motor installation cavities, and the other two positioning columns are arranged outside the two motor installation cavities.

[0026] Optionally, each of the first supporting frames is provided with a sealing slope, which is inclined from the back to the front toward the side away from the rear middle supporting part; each of the second supporting frames is connected to a sealing plate, two of the sealing plates are arranged between the two sealing slopes, and each of the sealing slopes is sealed with the corresponding sealing plate.

[0027] Optionally, the first structural member further comprises a heat exchanger mounting portion, the heat exchanger mounting portion is arranged at the rear side of the first air duct portion, the first air duct portion, the first motor housing portion and the heat exchanger mounting portion are integrally formed; the heat exchanger mounting portion has a water receiving groove for receiving condensed water; the second air duct portion and the second motor housing portion are integrally formed;

[0028] Both side surfaces of the rear middle support portion are first surfaces; both side surfaces of the front middle support portion are second surfaces; each of the first surfaces and the corresponding second surface form a volute profile used in conjunction with the crossflow impeller;

[0029] The air duct assembly further includes two volute tongues; the volute tongues are mounted on the second air duct portion or are integrally formed with the second air duct portion; and each of the volute tongues is located between the rear middle support portion and the corresponding first support frame; each of the second support frames has a third surface, and the third surface is a volute tongue extension surface located at the front side of the volute tongue;

[0030] The second structural member further includes a protective net integrally formed with the second air duct portion, and the protective net is arranged between the third surface and the front middle support portion.

[0031] Optionally, the first fixing device, the second fixing device, the third fixing device and the fourth fixing device are all screws;

[0032] The first structural member is provided with a threaded hole, the second structural member is provided with a guide groove with an opening facing forward, a through hole is provided on the bottom surface of the guide groove, and the screw passes through the through hole and enters the threaded hole to fix the second structural member and the first structural member together.

[0033] The utility model also provides an indoor unit of an air conditioner, which comprises a casing and any one of the above-mentioned air duct components; the air duct component is installed in the casing.

[0034] In the air duct assembly and the air conditioner indoor unit of the utility model, since the fixing device is arranged at the special position of the first structural member and the second structural member for connection, it can ensure that the first structural member and the second structural member are installed in place, and the components inside the first structural member and the second structural member, such as the motor, are installed in place, thereby improving the service life of the air duct assembly and the air conditioner indoor unit.

[0035] Furthermore, when in use, the fixing devices may be installed in sequence according to a preset sequence to further ensure that the components are installed in place.

[0036] Furthermore, the air duct assembly of the utility model is a front-to-back split structure, and the after-sales maintenance is also improved. After-sales personnel can directly remove the screws from the front side of the air duct to replace the crossflow impeller, motor and other components.

[0037] Furthermore, the air duct assembly and the air conditioner indoor unit of the utility model can be positioned at multiple positions due to the multiple positioning methods, which can facilitate the mutual positioning of the first structural member and the second structural member during the connection process, thereby preventing assembly errors caused by misaligned installation and ensuring proper installation, thereby greatly improving the assembly efficiency of the air duct assembly.

[0038] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0040] Figure 1 is a schematic structural diagram of an air duct assembly according to an embodiment of the utility model;

[0041] Figure 2 yes Figure 1 The schematic structural diagram of the air duct assembly and the evaporator shown;

[0042] Figure 3 yes Figure 2 A schematic cross-sectional view of the air duct assembly shown;

[0043] Figure 4 yes Figure 1 A schematic structural diagram showing a volute tongue installed on the second structural member of the air duct assembly;

[0044] Figure 5 yes Figure 3 A schematic enlarged view of the middle A;

[0045] Figure 6 yes Figure 3 A schematic enlarged view of point B in the middle;

[0046] Figure 7 yes Figure 6 Schematic enlarged view of point C in the middle;

[0047] Figure 8 yes Figure 1 A schematic structural diagram of a first structural member of the air duct assembly shown;

[0048] Fig. 9 yes Figure 1 A schematic structural diagram of a second structural member of the air duct assembly shown;

[0049] Fig.10 yes Figure 8 A schematic enlarged view of point D in the middle;

[0050] Fig.11 yes Fig. 9 Schematic enlarged view of point E in the middle;

[0051] Fig.12 is a schematic structural diagram of an air duct assembly according to an embodiment of the utility model;

[0052] Fig.13 yes Fig.12A schematic structural diagram of a first structural member of the air duct assembly shown;

[0053] Fig.14 yes Fig.12 A schematic structural diagram of a second structural member of the air duct assembly shown;

[0054] Fig.15 is a schematic front view of an air duct assembly according to an embodiment of the utility model;

[0055] Fig.16 yes Fig.15 Schematic enlarged view of F in the middle;

[0056] Fig.17 yes Fig.15 Schematic enlarged view of G in the middle;

[0057] Fig.18 yes Fig.15 Schematic enlargement of H in the middle. DETAILED DESCRIPTION

[0058] Refer to the following Figures 1 to 18 To describe an air duct assembly for an air conditioner and an air conditioner indoor unit of an embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0059] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person 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 the specific circumstances.

[0060] In addition, in the description of this 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 another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Figure 1 It is a schematic structural diagram of the air duct assembly of the air conditioner, such as Figure 1 As shown, and refer to Figures 2 to 14 The air duct assembly of the air conditioner includes a first structural member 200 and a second structural member 100. The second structural member 100 is connected to the first structural member 200, and the second structural member 100 and the first structural member 200 define a cavity, and the cavity includes an air supply channel, that is, the cavity can be an air supply channel, or the cavity is larger than the air supply channel, so that a third structural member can be installed in the cavity, such as the third structural member is a volute tongue 400 or other structure that defines the air supply channel. Further, the second structural member 100 has a second channel surface, and the first structural member 200 has a first channel surface, the second channel surface is a partial wall surface of the air supply channel, and the first channel surface is a partial wall surface of the air supply channel. The crossflow impeller can be installed in the air supply channel.

[0063] Specifically, in some embodiments of the present invention, the second structural member 100 and the first structural member 200 have a channel surface for defining an air supply channel. The channel surface includes the second channel surface and the first channel surface, and can be the entire wall surface of the air supply channel. The above-mentioned cavity can be understood as the air supply channel. In other words, the second channel surface and the first channel surface completely define the air supply channel, that is, the second structural member 100 and the first structural member 200 can define the air supply channel alone, and no other structure is required.

[0064] In other embodiments of the utility model, the second structural member 100 and the first structural member 200 have a channel surface for defining an air supply channel. The channel surface includes the second channel surface and the first channel surface, which may be a partial wall surface of the air supply channel, that is, the air supply channel is not defined by the second structural member 100 and the first structural member 200 alone, and only a partial wall surface of the air supply channel may be defined. For example, the second channel surface includes the second surface 111, the first channel surface includes the first surface 211, the first surface 211 is arranged on the rear side of the second surface 111, and the second surface 111 and the first surface 211 form a volute profile used in conjunction with the crossflow impeller. That is, one wall surface of the cavity may be the above-mentioned channel surface, and a volute tongue 400 cooperating with the above-mentioned channel surface is also arranged in the cavity. That is, the cavity may include a space for the air supply channel and a volute tongue installation space for installing the volute tongue.

[0065] Preferably, if Figures 1 to 4 ,as well as Fig.12 and Fig.14 As shown, the second structural member 100 includes a second air duct portion 110, and the second air duct portion 110 has a front middle support portion 112 and a second support frame 113. The first structural member 200 includes a first air duct portion 210, and the first air duct portion 210 includes a rear middle support portion 212 and a first support frame 213. The first support frame 213 is arranged on the rear side of the second support frame 113, and the rear middle support portion 212 is arranged on the rear side of the front middle support portion 112. The surfaces of the rear middle support portion 212 and the front middle support portion 112 facing the first support frame are the second surface 111 and the first surface 211, respectively. The second air duct portion 110 is used to install the volute tongue 400 used in conjunction with the crossflow impeller.

[0066] That is to say, the air duct assembly further includes a third structural member; the third structural member is installed on the second structural member 100; the third structural member has a third channel surface, which is a partial wall surface of the air supply channel. The third channel surface is the surface of the volute tongue 400 for guiding air.

[0067] In some embodiments of the present invention, the second supporting frame has a third surface 115 facing the second surface 111, and the third surface 115 is located at the front side of the volute tongue 400. The third surface 115 can also be referred to as an extended surface extending forward of the wind guide surface of the volute tongue 400. That is, the second channel surface also includes the third surface 115, and the third surface 115 is a volute tongue extension surface located at the front side of the volute tongue used in conjunction with the crossflow impeller.

[0068] In some embodiments of the present invention, a sealing plate 114 is connected to the second supporting frame 113, the second supporting frame 113 is located at the front side of the sealing plate 114, and the front end of the volute tongue 400 is installed at the rear end of the second supporting frame 113. The rear end of the volute tongue 400 is between the first supporting frame 213 and the rear middle supporting portion 212. In this embodiment, the volute tongue 400 and the volute profile and the third surface 115 define two side surfaces of the air supply channel.

[0069] In other embodiments of the present invention, the volute tongue 400 and the volute profile can define an air supply channel, that is, the second support frame 113 does not have the third surface 115. In other words, the volute tongue 400 is installed on the second support frame 113 and covers the third surface 115. That is, the second support frame 113 is only a supporting and mounting structure and does not have a wind guiding function.

[0070] In some embodiments of the present invention, the second structural member 100 further includes a volute tongue 400 , that is, the volute tongue 400 and the second air channel portion 110 are integrally formed.

[0071] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the first support frame 213 is used to install the corresponding end of the evaporator 600 of the air conditioner. That is, the first support frame 213 can be used to cooperate with the evaporator 600 to achieve the fixation of the evaporator.

[0072] In some embodiments of the present invention, Figures 1 to 14 As shown, there are two first surfaces 211, two second surfaces 111 and three surfaces 115. There are two first support frames 213, which are arranged on both sides of the rear middle support portion 212. Both side surfaces of the rear middle support portion 212 are the first surfaces 211, and both side surfaces of the front middle support portion 112 are the second surfaces 111. There are two second support frames 113, which are arranged on both sides of the front middle support portion 112. In this embodiment, the air duct assembly can be a double air duct structure, that is, there are two air supply channels, and the two air supply channels can be arranged symmetrically on the left and right, which can expand the air supply range, increase the air supply volume, improve the efficiency of cooling or heating, and improve the heating effect.

[0073] The two first supporting frames 213 on the first structural member 200 also have the effect of enhancing the structural strength of the first structural member 200. Both ends of the evaporator 600 of the air conditioner can be installed on the two first supporting frames 213 of the first structural member 200.

[0074] In some embodiments of the present invention, the front middle support portion 112 and the rear middle support portion 212 may not define the channel surface of the air supply channel. The front middle support portion 112 and the rear middle support portion 212 may be installed with a structure for forming the channel surface of the air supply channel. The front middle support portion 112 and the rear middle support portion 212 are only used for support function.

[0075] In some embodiments of the present invention, Figure 1 , Figure 2 , Figures 8 to 14 As shown, the first structural member 200 further includes a first motor housing 220 disposed at one end of the first air channel portion 210 . The second structural member 100 further includes a second motor housing 120 disposed at one end of the second air channel portion 110 .

[0076] The second motor housing 120 is arranged at the front side of the first motor housing 220. The first motor housing 220 and the second motor housing 120 jointly define a motor installation cavity for installing the motor. In other embodiments of the present utility model, the first motor housing 220 and the second motor housing 120, the first air duct portion and the second air duct portion jointly define a motor installation cavity for installing the motor. That is to say, when the first motor housing 220 and the second motor housing 120 are used to form an end face of the air supply duct, the first motor housing 220 and the second motor housing 120 can form a motor installation cavity. When the first motor housing 220 and the second motor housing 120 are not used to form an end face of the air supply duct, that is, when the end wall of the air supply duct is the structure of the first air duct portion or the second air duct, the surface of the end wall of the air supply duct facing the motor and the first motor housing 220 and the second motor housing 120 jointly define a motor installation cavity for installing the motor. In some optional embodiments of the present invention, when the first motor shell 220 and the second motor shell 120 are not used to form an end face of the air supply duct, and the surface of the end wall of the air duct facing the motor does not need to define the motor installation cavity, the end wall of the air duct is spaced apart from the corresponding surfaces of the first motor shell 220 and the second motor shell 120, and the first motor shell 220 and the second motor shell 120 can form a motor installation cavity.

[0077] Preferably, in this embodiment, the first structural member 200 may define a first installation cavity with an opening facing forward, and the second structural member 100 may define a second installation cavity with an opening facing backward, and the first installation cavity and the second installation cavity constitute the above-mentioned motor installation cavity. The first motor housing 220 and the second motor housing 120 are used to form one end surface of the air supply duct.

[0078] During installation, the crossflow impeller can be first installed on the first structural member 200, the motor can be installed on the first structural member 200, the volute 400 can be installed on the second air duct portion 110, and then the second structural member 100 can be installed on the first structural member 200. The second structural member 100 and the first structural member 200 can facilitate the installation of the crossflow impeller and the volute 400, thereby improving the assembly efficiency of the indoor unit of the air conditioner.

[0079] In some embodiments of the present invention, Figure 1 , Figure 2 , Figures 8 to 14 As shown, the first structural member 200 also includes a heat exchanger mounting portion. The heat exchanger mounting portion is arranged at the rear side of the first air duct portion 210, and the heat exchanger mounting portion is used to mount a heat exchanger of the air conditioner, such as an evaporator 600. The first air duct portion 210, the first motor housing portion 220 and the heat exchanger mounting portion are integrally formed. The second air duct portion 110 and the second motor housing portion 120 are integrally formed.

[0080] In the embodiment of the utility model, the first air duct part 210, the first motor shell part 220 and the heat exchanger mounting part are integrally formed, and the second air duct part 110 and the second motor shell part 120 are integrally formed, which can significantly reduce the number of parts of the existing air duct assembly, that is, multiple structures are integrated, thereby reducing the assembly dimension chain, reducing errors during assembly and improving precision. The modular structural design significantly improves the assembly efficiency and production efficiency, and the integrated structure improves the quality, reduces the occurrence of quality accidents, and provides users with a better user experience. It can solve the problem that the air duct of the indoor unit of the existing air conditioner cabinet is usually split into multiple parts, the air duct assembly process is complicated, and the production efficiency is low. In addition, the front and rear split structure of this air duct also improves the after-sales maintainability. After-sales personnel can directly remove the screws intuitively from the front side of the air duct to replace the crossflow impeller, motor and other components.

[0081] In some embodiments of the present invention, Figure 1 , Figure 2 , Figures 8 to 14 As shown, the first air duct portion further includes a first end structure 230; the first end structure 230 is disposed at one end of the rear middle support portion 212, and the first motor housing portion 220 is disposed at the other end of the rear middle support portion 212. The second air duct portion further includes a second end structure 130; the second end structure 130 is disposed at one end of the front middle support portion 112, and the second motor housing portion 120 is disposed at the other end of the front middle support portion 112; the second end structure 130 is disposed at the front side of the first end structure 230.

[0082] In some embodiments of the present invention, a wind wheel shaft mounting portion 231 is provided on the first end structure 230 or the second end structure 130, or the first end structure 230 and the second end structure 130 cooperate to form a wind wheel shaft mounting portion 231, and the wind wheel shaft mounting portion 231 is configured to mount one end of a cross-flow wind wheel.

[0083] In this practical embodiment, the air duct assembly further comprises a wind wheel shaft mounting portion 231, which enables the installation of the crossflow wind wheel and improves the integration of the air duct assembly.

[0084] In some embodiments of the present invention, a plurality of first slots and a plurality of first protrusions are formed on the surface of the first end structure 230 facing the second end structure 130, and a plurality of second slots and a plurality of second protrusions 131 are formed on the surface of the second end structure 130 facing the first end structure 230, each first protrusion is inserted into a second slot, and each second protrusion 131 is inserted into a first slot. It can also be said that both the first end structure 230 and the second end structure 130 have a special-shaped surface, which facilitates the positioning between the first structural member and the second structural member.

[0085] In some embodiments of the present invention, Figure 12 to Figure 14 As shown, the plurality of first protrusions include two of the above-mentioned wind rotor shaft mounting parts 231, that is, a protrusion is formed at the wind rotor shaft mounting part 231. Further, the front surface of each wind rotor shaft mounting part 231 is an arc surface 232; a first slot is formed between the two arc surfaces 232, and the two arc surfaces 232 are connected by a plane. The plurality of second slots include two arc slots 132 respectively matched with the wind rotor shaft mounting parts 231.

[0086] In other embodiments of the present invention, Figures 8 to 11 As shown, one of the first end structure 230 and the second end structure 130 is provided with a positioning block 262 or a positioning pin 161, and the other is provided with a positioning groove 162 or a positioning surface 261 extending in the front-rear direction. The positioning block 262 or the positioning pin 161 is inserted into the positioning groove 162; or, the positioning block 262 or the positioning pin 161 contacts and abuts against the positioning surface 261. For example, the first end structure 230 is provided with positioning surfaces 261 at both lateral ends, and the second end structure 130 is provided with positioning pins 161 at both lateral ends. At the same time, the first end structure 230 is provided with a positioning block 262 in the lateral middle, and the second end structure 130 is provided with a positioning groove 162 in the lateral middle.

[0087] In some embodiments of the present invention, Figure 6 and Figure 7As shown, the front side of the rear middle support portion 212 is provided with a convex strip 301 extending along the length direction of the rear middle support portion 212, and the front side of the front middle support portion 112 is provided with a convex strip groove 302 extending along the length direction of the front middle support portion 112, and the convex strip 301 is inserted into the convex strip groove 302.

[0088] In some alternative embodiments of the present invention, the front side of the rear middle support portion 212 is provided with a convex groove 302 extending along the length direction of the rear middle support portion 212, and the front side of the front middle support portion 112 is provided with a convex strip 301 extending along the length direction of the front middle support portion 112, and the convex strip is inserted into the convex strip groove. The convex strip 301 is inserted into the convex strip groove 302, which facilitates the positioning between the first structural member 200 and the second structural member 100, and further facilitates the connection between the first structural member and the second structural member.

[0089] In some embodiments of the present invention. Figure 12 to Figure 14 As shown, one of the first motor housing 220 and the second motor housing 120 is provided with a positioning column 303, and the other is provided with a positioning hole 304, and the positioning column 303 is inserted into the positioning hole 304. For example, there are three positioning columns 303, one positioning column 303 is provided between the two motor installation cavities, and the remaining two positioning columns 303 are provided outside the two motor installation cavities.

[0090] In some embodiments of the present invention, Figure 7 As shown, each first support frame 213 is provided with a sealing bevel 218, and the sealing bevel 218 is inclined from the back to the front toward the side away from the rear middle support portion 212. Two sealing plates 114 are arranged between the two sealing bevels 218, and the sealing bevels 218 and the sealing plates 114 are sealed. The arrangement of the sealing bevels 218 and the sealing plates 114 can play a sealing role when the second structural member 100 and the first structural member 200 are connected. Furthermore, the inclined arrangement of the sealing bevels 218 and the sealing plates 114 can make the sealing bevels 218 exert an extrusion force on the corresponding sealing plates 114 in the direction of the rear middle support portion 212 when the sealing bevels 218 and the sealing plates 114 are in inclined contact, thereby improving the tightness of the connection. Furthermore, the sealing bevel 218 is inclined from the rear to the front toward the side away from the rear middle support portion 212, so that the distance between the front ends of the two sealing bevels 218 is greater than the distance between the rear ends thereof, thereby facilitating the insertion of the two sealing plates 114 between the two sealing bevels 218 to achieve positioning.

[0091] In order to further improve the sealing performance, such as Figure 5 and Figure 7As shown, a sealing gasket 219 is provided between the first structural member 200 and the second structural member 100. For example, the sealing bevel 218 and the sealing plate 114 may be provided with a sealing gasket 219. A sealing gasket is provided between the convex strip 301 and the convex strip groove 302. A sealing gasket 219 is provided between the first end structure 230 and the second end structure 130. A sealing gasket 219 is provided between the first motor housing 220 and the second motor housing 120.

[0092] In some embodiments of the present invention, Figure 1 , Fig. 9 , Fig.12 and Fig.14 As shown, the second structural member 100 further includes a protective net 140 integrally formed with the second air channel portion 110 , and the protective net 140 is located in the air supply channel. Specifically, the protective net 140 is disposed between the third surface 115 and the front middle support portion 112 .

[0093] In some embodiments of the utility model, the first air duct portion 210 is vertically arranged, and the second air duct portion 110 is vertically arranged. The heat exchanger mounting portion includes an upper tray 241 and a lower tray 242, wherein the upper tray 241 is arranged at the upper end of the first air duct portion 210 and connected to the upper end of the first end structure 230 and the first support frame 213, and the lower tray 242 is arranged at the lower end of the first air duct portion 210 and connected to the first motor housing portion 220; a water receiving trough is arranged on the lower tray 242.

[0094] In some embodiments of the present invention, Figure 6 and Figure 7 As shown, a spacer 300 is provided on the convex strip 301 or in the convex strip groove 302. There may be multiple spacers 300, and the spacer 300 may be a convex column 310. The convex column 310 is provided on the convex strip 301 and contacts and abuts against the convex strip groove 302, or the convex column 310 is provided in the convex strip groove 302 and contacts and abuts against the convex strip 301, so that the convex strip 301 and the groove surface of the convex strip groove 302 are spaced apart. In this way, when the first structural member 200 and the second structural member 100 are deformed due to thermal expansion and contraction, the convex strip and the groove surface of the convex strip groove 302 are not in direct contact, and the convex strip 301 or the convex strip groove 302 moves relative to the convex column, and the thermal expansion and contraction sound generated is significantly reduced compared with the thermal expansion and contraction sound generated when the groove surfaces of the convex strip 301 and the convex strip groove 302 are in direct contact.

[0095] Furthermore, the protrusion 310 is a small protruding columnar structure with a height of 1 mm to 1.5 mm, and the contact end of the protrusion 310 is a spherical head, thereby further reducing the contact area when the protrusion 310 abuts against the second mating surface. Furthermore, the protrusion 310 abuts against the second mating surface through the arc surface of the spherical head, which can protect the position where the protrusion 310 abuts against the second mating surface to prevent scratching of the position and thus reduce the sealing performance.

[0096] In some embodiments of the utility model, a spacer 300 for reducing thermal expansion and contraction noise may also be provided at other positions where the first structural member 200 and the second structural member 100 are connected. For example, a spacer 300 may be provided between the sealing bevel 218 and the sealing plate 114. A spacer 300 is provided between the first end structure 230 and the second end structure 130. A spacer 300 is provided between the first motor shell 220 and the second motor shell 120. Therefore, it can also be said that the second structural member 100 includes a second mating surface, the first structural member 200 includes a first mating surface, and the first mating surface faces the second mating surface. The spacer 300 is provided between the first mating surface and the second mating surface. The surface of the convex strip 301 may be the first mating surface, and the groove surface of the convex strip groove 302 may be the second mating surface. The front surface of the first end structure 230 may be the first mating surface, and the back of the second end structure 130 may be the second mating surface.

[0097] Since various parts of the second structural member 100 or the first structural member 200 are affected by temperature in different ways, the spacer 300 may be disposed only at a position that is more affected by temperature, mainly between the convex strip 301 and the convex strip groove 302 .

[0098] Furthermore, the sealing gasket 219 is also disposed between the first mating surface and the second mating surface. The thickness of the sealing gasket 219 is smaller than the width of the interval between the second mating surface and the first mating surface. Alternatively, the sealing gasket 219 contacts and abuts against both the second mating surface and the first mating surface.

[0099] In some alternative embodiments of the present invention, one side of the protrusion 310 is disposed on the first mating surface or the second mating surface. Preferably, the cross section of each protrusion 310 is a polygon, and one side wall surface of each protrusion 310 is disposed on the first mating surface or the second mating surface. Of course, each protrusion 310 can be cylindrical, and its peripheral wall surface is disposed on the first mating surface or the second mating surface.

[0100] In some embodiments of the present invention, the spacer 300 is a sound-absorbing tooth, and a plurality of sound-absorbing teeth can be arranged in parallel to form a sound-absorbing grille. Each sound-absorbing tooth is arranged on the first mating surface or the second mating surface.

[0101] In some embodiments of the utility model, the sealing gasket 219 is made of flexible material and is in the shape of a long strip. It is pasted on the second mating surface or the first mating surface, which can prevent the second mating surface and the first mating surface from stress contact, thereby protecting the second structural member 100 and the first structural member 200. The setting of the flexible material of the sealing gasket 219 can have the function of absorbing vibration, thereby further reducing the thermal expansion and contraction sound generated by the air duct assembly. At the same time, the sealing gasket 219 also has a sealing function to prevent the gas in the air supply channel from entering the gap between the second mating surface and the first mating surface to affect the air flow and generate noise. In this embodiment, the material of the sealing gasket 219 is flocked cloth, and the thickness is between 1mm and 3mm, and the preferred thickness is 1mm.

[0102] In some embodiments of the present invention, Figures 15 to 18 As shown, the second motor housing 120 and the first motor housing 220 are connected by a first fixing device 361. The rear middle support portion 212 is arranged at the rear side of the front middle support portion 112, and the rear middle support portion 212 and the front middle support portion 112 are connected by a second fixing device 362. Each first support frame 213 is arranged at the rear side of the corresponding second support frame 113, and each first support frame 213 and the corresponding second support frame are connected by a third fixing device 363.

[0103] In the embodiment of the utility model, the first motor housing 220 and the second motor housing 120 are provided with a first fixing device 361, which can include the motor being installed in place, the installation size being accurate, and preventing the motor rubber pad from moving along the axial direction of the motor. The second fixing device 362 and the third fixing device 363 can ensure that the first air duct portion 210 and the second air duct portion 110 are installed in place. Further, during installation, the first fixing device 361 can be installed first, then the second fixing device 362 can be installed, and finally the third fixing device 363 can be installed. In other words, the motor is installed first, then the middle of the first structural member 200 and the second structural member 100 are installed, and finally the two sides of the first structural member 200 and the second structural member 100 are installed to ensure the best installation effect.

[0104] In some embodiments of the present invention, the second end structure 130 is connected to the first end structure 230 at the middle thereof by a fourth fixing device 364, so as to further improve the installation firmness.

[0105] In some embodiments of the utility model, the second motor housing 120 is connected to the first motor housing 210 at its middle part and both ends in the transverse direction through the first fixing device 361. For example, there are two motor mounting cavities, which are arranged in sequence in the transverse direction. The two motor mounting cavities are located on both sides of the rear middle support portion 212. There is a first fixing device 361 between the two motor mounting cavities, and there are also first fixing devices 361 on both sides of the two motor mounting cavities. During installation, the first fixing device 361 between the two motor mounting cavities can be installed first, and then the first fixing devices 361 on both sides of the two motor mounting cavities can be installed.

[0106] In some embodiments of the utility model, the first fixing device 361, the second fixing device 362, the third fixing device 363 and the fourth fixing device 364 are all screws. The first structural member is provided with a threaded hole, the second structural member is provided with a guide groove with an opening facing forward, and the bottom surface of the guide groove is provided with a through hole, and the screw passes through the through hole and enters the threaded hole to fix the second structural member and the first structural member.

[0107] Specifically, there is a first fixing device 361 between the two motor mounting cavities, and the fixing device can be located in the middle of the two motor mounting cavities along the up-down direction and the middle of the left-right direction. There are two first fixing devices 361 on each side of the two motor mounting cavities, and further, the positions of the five first fixing devices 361 can be at five positions, namely, four points and a center point of a rectangular figure. There can be two second fixing devices 362, evenly distributed on the front middle support portion 112. There can be one third fixing device 363. There can be four third fixing devices 363, two of which are arranged on each first support frame and are located at both ends of the first support frame.

[0108] Furthermore, during installation, a lying assembly method is adopted, with the front side of the first structural member 200 facing upward, and the second structural member 100 is placed on the first structural member 200. First, the positioning column at the first motor housing 220 below is used as a guide, and then the positioning block or positioning pin at the first end structure 230 above is used for positioning and assembly. Then the screws are placed in each corresponding guide groove. The structure and size of the guide groove ensure that the screws are not biased in the center after falling, and the screws can be blindly driven.

[0109] First, fix the screws between the two motor mounting cavities to ensure accurate positioning; then fix the other four first fixing devices 361 to fix the lower motor firmly and accurately, and prevent the motor rubber pad from moving up and down. Fix the two second fixing devices 362 and the third fixing device 363 in sequence from the motor to the direction of the first end structure 230, which can ensure that the tolerance reference is at the motor; finally fix the third fixing devices 363 at four locations, and the first structural member and the second structural member are fixed. The entire screw fixing process can ensure the accuracy of the motor assembly size, prevent the motor from moving and causing quality problems in the fan grinding air duct, and is easy for staff to operate, saving time and improving efficiency. When fixing, each screw can be tightened to the standard torque state before installing the next screw. Install from front to back, which is convenient for the disassembly and installation of the first structural member 200 and the second structural member 100. The air duct assembly is a front-to-back split structure, and the after-sales maintainability is also improved simultaneously. After-sales personnel can directly remove the screws from the front side intuitively, and then replace the crossflow impeller, motor, etc.

[0110] The embodiment of the utility model further provides an indoor unit of an air conditioner, the indoor unit of the air conditioner comprises a casing and an air duct assembly according to any one of the above embodiments, and the air duct assembly is installed in the casing.

[0111] Furthermore, the indoor unit of the air conditioner further includes an evaporator 600, which can be installed on the first structural member 200, specifically between the upper tray 241 and the lower tray 242. The cross-flow fan works to force the airflow to flow through the evaporator 600 into the air supply channel, and then flow out of the air supply channel and the casing into the room for cooling or heating or maintaining a constant temperature.

[0112] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An air duct assembly for an air conditioner, characterized in that: comprising a first structural member and a second structural member; The first structural member includes a first air duct portion and a first motor housing portion arranged at one end of the first air duct portion; the second structural member includes a second air duct portion and a second motor housing portion arranged at one end of the second air duct portion; the second air duct portion is arranged at the front side of the first air duct portion, and the second motor housing portion is arranged at the front side of the first motor housing portion; The first air duct portion includes a rear middle support portion and two first support frames; The two first supporting frames are arranged on both sides of the rear middle supporting portion; The second air duct portion has a front middle support portion and two second support frames; Two second supporting frames are arranged on both sides of the front middle supporting portion; The second motor housing portion and the first motor housing portion are connected via a first fixing device; The rear middle support portion is arranged at the rear side of the front middle support portion, and the rear middle support portion and the front middle support portion are connected by a second fixing device; Each of the first supporting frames is arranged on the rear side of the corresponding second supporting frame, and each of the first supporting frames is connected to the corresponding second supporting frame via a third fixing device.

2. The air duct assembly according to claim 1, characterized in that: The first air duct portion further includes a first end structure; the first end structure is arranged at one end of the rear middle support portion, and the first motor housing portion is arranged at the other end of the rear middle support portion; The second air duct portion further includes a second end structure; the second end structure is arranged at one end of the front middle support portion, and the second motor housing portion is arranged at the other end of the front middle support portion; The second end structure is arranged at the front side of the first end structure, and the second end structure is connected to the first end structure at the middle thereof through a fourth fixing device.

3. The air duct assembly according to claim 2, characterized in that: The second motor housing portion is connected to the first motor housing portion at its middle portion and both ends along the transverse direction through the first fixing device.

4. The air duct assembly according to claim 3, characterized in that: The first motor housing portion and the second motor housing portion jointly define a motor installation cavity for installing the motor, or the first motor housing portion, the second motor housing portion, the first air duct portion and the second air duct portion jointly define a motor installation cavity for installing the motor; There are two motor installation cavities, which are arranged in sequence along the transverse direction; the two motor installation cavities are located on both sides of the rear middle support portion; The first fixing device is provided between the two motor installation cavities, and the first fixing device is also provided on both sides of the two motor installation cavities.

5. The air duct assembly according to claim 2, characterized in that: A plurality of first slots and a plurality of first protrusions are formed on the surface of the first end structure facing the second end structure, and a plurality of second slots and a plurality of second protrusions are formed on the surface of the second end structure facing the first end structure, each of the first protrusions is inserted into one of the second slots, and each of the second protrusions is inserted into one of the first slots; or, One of the first end structure and the second end structure is provided with a positioning block or a positioning pin, and the other is provided with a positioning groove or a positioning surface extending along the front-to-back direction; the positioning block or the positioning pin is inserted into the positioning groove, or the positioning block or the positioning pin contacts and abuts against the positioning surface.

6. The air duct assembly according to claim 5, characterized in that: The multiple first protrusions include two wind wheel shaft mounting parts, and the wind wheel shaft mounting parts are configured to mount one end of the crossflow wind wheel; the two wind wheel shaft mounting parts are located on both sides of the rear middle support part; the front surface of each wind wheel shaft mounting part is an arc-shaped surface; a first slot is formed between the two arc-shaped surfaces, and the two arc-shaped surfaces are connected by a plane; the multiple second slots include two arc-shaped slots that respectively cooperate with the wind wheel shaft mounting parts.

7. The air duct assembly according to claim 1, characterized in that: The front side of the rear middle support portion is provided with a convex strip extending along the length direction of the rear middle support portion, and the front side of the front middle support portion is provided with a convex strip groove extending along the length direction of the front middle support portion, and the convex strip is inserted into the convex strip groove; or, The front side of the rear middle support portion is provided with a convex groove extending along the length direction of the rear middle support portion, and the front side of the front middle support portion is provided with a convex strip extending along the length direction of the front middle support portion, and the convex strip is inserted into the convex groove; A convex column is arranged between the convex strip and the convex strip groove, and the convex column is arranged on one of the convex strip and the convex strip groove and contacts and abuts against the other one.

8. The air duct assembly according to claim 4, characterized in that: A positioning column is provided on one of the first motor housing and the second motor housing, and a positioning hole is provided on the other of the first motor housing, and the positioning column is inserted into the positioning hole; There are three positioning columns, one of which is arranged between two motor installation cavities, and the other two positioning columns are arranged outside the two motor installation cavities.

9. The air duct assembly according to claim 1, characterized in that: Each of the first supporting frames is provided with a sealing slope, which is inclined from the back to the front toward the side away from the rear middle supporting part; each of the second supporting frames is connected with a sealing plate, and the two sealing plates are arranged between the two sealing slopes, and each sealing slope is sealed with the corresponding sealing plate.

10. The air duct assembly according to claim 1, characterized in that: The first structural member further includes a heat exchanger mounting portion, the heat exchanger mounting portion is arranged at the rear side of the first air duct portion, the first air duct portion, the first motor housing portion and the heat exchanger mounting portion are integrally formed; the heat exchanger mounting portion has a water receiving groove for receiving condensed water; the second air duct portion and the second motor housing portion are integrally formed; Both side surfaces of the rear middle support portion are first surfaces; both side surfaces of the front middle support portion are second surfaces; each of the first surfaces and the corresponding second surface form a volute profile used in conjunction with the crossflow impeller; The air duct assembly further includes two volute tongues; the volute tongues are mounted on the second air duct portion or are integrally formed with the second air duct portion; and each of the volute tongues is located between the rear middle support portion and the corresponding first support frame; each of the second support frames has a third surface, and the third surface is a volute tongue extension surface located at the front side of the volute tongue; The second structural member further includes a protective net integrally formed with the second air duct portion, and the protective net is arranged between the third surface and the front middle support portion.

11. The air duct assembly according to claim 2, characterized in that: The first fixing device, the second fixing device, the third fixing device and the fourth fixing device are all screws; The first structural member is provided with a threaded hole, the second structural member is provided with a guide groove with an opening facing forward, a through hole is provided on the bottom surface of the guide groove, and the screw passes through the through hole and enters the threaded hole to fix the second structural member and the first structural member together.

12. An air conditioner indoor unit, characterized in that: The invention comprises a casing and an air duct assembly according to any one of claims 1 to 11; the air duct assembly is installed in the casing.

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