Air duct assembly of air conditioner and indoor unit of air conditioner

Abstract

The utility model provides an air duct assembly of an air conditioner and an indoor unit of the air conditioner. A plurality of spacing pieces are arranged between the first matching surface and the second matching surface, so that the first matching surface and the second matching surface are far away from each other to form a gap. The sum of the projected areas of the ends, facing the first matching face, of the distance pieces on the first matching face is smaller than the area of the first matching face. According to the air conditioner, the contact area of the joint between the first structural part and the second structural part is reduced by the spacer, so that thermal expansion and cold contraction sound generated by deformation can be reduced or eliminated, the mute effect in the operation process of the air conditioner is improved, and then the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air duct component of 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. During the use of the air conditioner, the heat emitted by the air conditioner itself during operation or the influence of the hot and cold environment will cause the parts of its own material to deform due to thermal expansion and contraction. In particular, the air duct assembly is made of plastic material, so the air duct assembly will produce a deformation of 0.3-5% within a certain temperature difference range. Thermal expansion and contraction cause deformation between the various mechanisms of the air duct assembly, causing mutual friction between the various mechanisms, which will produce intermittent or continuous irregular noise, that is, thermal expansion and contraction sound. Thermal expansion and contraction sound not only brings a bad experience to users, but also produces sharp and piercing noise in severe cases, which makes people's hearing and psychological systems uncomfortable, and even causes physical and mental lesions. Utility Model Content

[0003] In view of the above-mentioned problems, the present utility model is proposed to provide an air duct assembly and an air conditioner indoor unit of an air conditioner that overcome the above-mentioned problems or at least partially solve the above-mentioned problems. It can solve the problem that the air duct assembly of the existing air conditioner is prone to produce thermal expansion and contraction noise, and can achieve the effect of reducing or eliminating the thermal expansion and contraction noise of the air duct assembly, thereby improving the user experience.

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

[0005] The first structural member is connected to the second structural member, the first structural member has a first channel surface, the second structural member has a second channel surface, the first channel surface is a partial wall surface of the air supply channel, and the second channel surface is a partial wall surface of the air supply channel;

[0006] The first structural member includes a first mating surface; the second structural member includes a second mating surface, and the second mating surface faces the first mating surface; wherein

[0007] A plurality of spacers are provided between the first mating surface and the second mating surface to promote the first mating surface and the second mating surface to move away from each other to form a gap; or, the first mating surface and the second mating surface are gap-matched, and a plurality of spacers are provided between the first mating surface and the second mating surface;

[0008] The spacer is in contact with or spaced from the first mating surface, and the sum of the projected areas of the ends of the spacer facing the first mating surface on the first mating surface is smaller than the area of ​​the first mating surface; and / or

[0009] The spacer is in contact with or spaced from the second mating surface, and the sum of the projected areas of the ends of the spacer facing the second mating surface on the second mating surface is smaller than the area of ​​the first mating surface.

[0010] Optionally, the second structural member includes a convex strip, and the top surface and / or side wall surface of the convex strip is the second mating surface; the first structural member includes a groove, and the convex strip is inserted into the groove; the bottom surface and / or side wall surface of the groove is the first mating surface.

[0011] Optionally, the spacer is a sound-absorbing column;

[0012] One end of the silencer column is arranged on the second mating surface or the first mating surface; or, one side of the silencer column is arranged on the second mating surface or the first mating surface, the cross-section of each silencer column is a polygon, and a side wall surface of each silencer column is arranged on the second mating surface or the first mating surface.

[0013] Optionally, the spacer is a sound-absorbing tooth, and each of the sound-absorbing teeth is arranged on the second mating surface or the first mating surface.

[0014] Optionally, an air duct gasket is provided between the first mating surface and the second mating surface;

[0015] The thickness of the air duct lining is smaller than the width of the interval between the first mating surface and the second mating surface; or the air duct lining is in contact with and abuts against both the first mating surface and the second mating surface.

[0016] Optionally, the first channel surface includes a first surface and a third surface, the second channel surface includes a second surface, the second surface is arranged at the rear side of the first surface, and the first surface and the second surface form a volute profile used in conjunction with the crossflow impeller;

[0017] The first structural member includes a first air duct portion, the first air duct portion having a front volute air duct wall portion and a volute tongue surface extension portion; the second structural member includes a second air duct portion, the second air duct portion including a rear volute air duct wall portion and a supporting frame;

[0018] The support frame is arranged at the rear side of the volute tongue surface extension portion, the rear volute air duct wall portion is arranged at the rear side of the front volute air duct wall portion, and the surfaces of the rear volute air duct wall portion and the front volute air duct wall portion facing the support frame are the first surface and the second surface respectively;

[0019] The first air channel portion is used to install a volute tongue used in conjunction with the crossflow wind wheel, and the volute tongue surface extension portion has the third surface facing the first surface, and the third surface is located at the front side of the volute tongue;

[0020] The supporting frame is used to mount a corresponding end of the evaporator of the air conditioner;

[0021] The convex strip is arranged at the front end of the rear volute air duct wall portion; the groove is arranged on the front volute air duct wall portion.

[0022] Optionally, the first structural member further includes a first motor housing disposed at one end of the first air duct portion, and a first partition plate disposed between the first air duct portion and the first motor housing;

[0023] The second structural member further includes a second motor housing disposed at one end of the second air duct portion, and a second partition plate disposed between the second air duct portion and the second motor housing;

[0024] The first partition plate, the second partition plate, the first motor housing and the second motor housing define a motor cavity for installing a motor for driving the crossflow impeller to rotate;

[0025] The end surface of the first partition plate facing the second partition plate is the first matching surface, and the end surface of the second partition plate facing the first partition plate is the second matching surface.

[0026] Optionally, there are two first surfaces, two second surfaces and two third surfaces, and two supporting frames, which are arranged on both sides of the rear volute air duct wall; both side surfaces of the rear volute air duct wall are the second surfaces, and both side surfaces of the front volute air duct wall are the first surfaces.

[0027] Optionally, each of the supporting frames is provided with a sealing slope, which is inclined from the back to the front toward the side away from the rear volute air duct wall; each of the volute tongue surface extensions is provided with a sealing plate, two of the sealing plates are arranged between the two sealing slopes, and each of the sealing plates is sealed with the corresponding sealing slope.

[0028] The utility model 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.

[0029] In the air duct assembly of the air conditioner of the utility model, since a spacer is provided between the first structural member and the second structural member, and the spacer makes the first mating surface and the second mating surface no longer directly contact, when the first mating surface and the spacer are integrally formed and the second mating surface and the spacer are in contact, or when the second mating surface and the spacer are integrally formed and the first mating surface and the spacer are in contact, the contact area that can generate thermal expansion and contraction sound is significantly smaller than when the first mating surface and the second mating surface are in direct contact, that is, the contact area between the first structural member and the second structural member can be reduced. When the first structural member and the second structural member undergo thermal expansion and contraction deformation with different deformation amounts, the friction sound generated is significantly reduced, that is, the thermal expansion and contraction sound is significantly reduced. Therefore, the spacer is set to reduce the contact area at the connection between the first structural member and the second structural member, so that when the first structural member and the second structural member undergo thermal expansion and contraction deformation, the thermal expansion and contraction sound generated by the deformation can be reduced or eliminated, thereby improving the quiet effect during the operation of the air conditioner and further improving the user experience.

[0030] 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

[0031] 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:

[0032] Figure 1 is a schematic structural diagram of an air duct assembly according to an embodiment of the utility model;

[0033] Figure 2 yes Figure 1 The schematic structural diagram of the air duct assembly and the evaporator shown;

[0034] Figure 3 is a schematic exploded view of an air duct assembly of an air conditioner according to an embodiment of the utility model;

[0035] Figure 4 yes Figure 2 A schematic cross-sectional view of the air duct assembly shown;

[0036] Figure 5 yes Figure 1 A schematic structural diagram showing a volute tongue installed on a first structural member of the air duct assembly;

[0037] Figure 6 yes Figure 2 A schematic cross-sectional view of the air duct assembly shown;

[0038] Figure 7 yes Figure 4 A schematic enlarged view of the middle A;

[0039] Figure 8 yes Figure 4 A schematic enlarged view of point B in the middle;

[0040] Fig. 9 yes Figure 8 Schematic enlarged view of point C in the middle;

[0041] Fig.10 yes Figure 6 A schematic enlarged view of point D in the middle;

[0042] Fig.11 yes Fig.10 Schematic enlargement of point E in the middle. DETAILED DESCRIPTION

[0043] Refer to the following Figures 1 to 11 To describe an air duct assembly and an air conditioner indoor unit of an air conditioner in an embodiment of the present 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 present 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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 11 The air duct assembly of the air conditioner includes a first structural member 100 and a second structural member 200. The first structural member 100 is connected to the second structural member 200, and the first structural member 100 and the second 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 other structures such as the volute tongue 400 and other structures defining the air supply channel can be installed in the cavity. Further, the first structural member 100 has a first channel surface, and the second structural member 200 has a second channel surface. The first channel surface is a partial wall surface of the air supply channel, and the second channel surface is a partial wall surface of the air supply channel. The crossflow impeller can be installed in the air supply channel.

[0048] The first structural member 100 includes a first mating surface, and the second structural member 200 includes a second mating surface, and the second mating surface faces the first mating surface. The first mating surface and the second mating surface are mainly located at the connection portion between the first structural member 100 and the second structural member 200.

[0049] A plurality of spacers 300 are provided between the first mating surface and the second mating surface to force the first mating surface and the second mating surface to move away from each other to form a gap. In other words, after installation, the first mating surface and the second mating surface are subjected to a force that forces them to contact each other, and the spacers 300 separate the two surfaces, that is, the spacers 300 must be squeezed by the first mating surface and the second mating surface.

[0050] Alternatively, in some other embodiments of the present invention, the first mating surface and the second mating surface are matched with each other in a clearance, and a plurality of spacers 300 are arranged between the first mating surface and the second mating surface. That is, the first mating surface and the second mating surface are arranged at intervals during installation, and the plurality of spacers 300 may not be squeezed by the first mating surface and the second mating surface. Of course, in some embodiments, the plurality of spacers 300 may be squeezed by the first mating surface and the second mating surface. The height of the spacer 300 is mainly related to the width of the interval between the first mating surface and the second mating surface.

[0051] The spacer 300 is in contact with or spaced from the first mating surface, and the sum of the projected areas of the end of the spacer 300 facing the first mating surface on the first mating surface is smaller than the area of ​​the first mating surface. By such an arrangement, a space can be formed between the first mating surface, the second mating surface and the spacer 300. The spacer 300 is in contact with or spaced from the first mating surface. Due to the effect of thermal expansion and contraction, when the spacer 300 contacts and moves relative to the first mating surface, the contact area is significantly reduced compared to the direct contact between the first mating surface and the second mating surface, and the thermal expansion and contraction noise is reduced.

[0052] Obviously, in other embodiments of the present invention, the spacer 300 is in contact with or spaced from the second mating surface, and the total projected area of ​​the end of the spacer 300 facing the second mating surface on the second mating surface is smaller than the area of ​​the first mating surface. By setting it in this way, a space can be formed between the first mating surface, the second mating surface and the spacer 300.

[0053] In some other embodiments of the present invention, the spacer 300 is not fixedly connected to the first mating surface and the second mating surface. In this case, the sum of the projected areas of the end of the spacer 300 facing the second mating surface on the second mating surface is smaller than the area of ​​the first mating surface, and the sum of the projected areas of the end of the spacer 300 facing the first mating surface on the first mating surface is smaller than the area of ​​the first mating surface.

[0054] Specifically, a spacer 300 is provided between the first structural member 100 and the second structural member 200, and the spacer 300 makes the first mating surface no longer in direct contact with the second mating surface. And the area where the spacer 300 contacts the first mating surface is smaller than the area of ​​the first mating surface, and / or, the area where the spacer 300 contacts the second mating surface is smaller than the area of ​​the second mating surface, so the spacer 300 can reduce the contact area when the first structural member 100 and the second structural member 200 are connected. When the first structural member 100 and the second structural member 200 undergo thermal expansion and contraction deformation with different deformation amounts, the friction sound generated is significantly reduced, that is, the thermal expansion and contraction sound is significantly reduced. Therefore, the spacer 300 reduces the contact area of ​​the connection between the first structural member 100 and the second structural member 200, so that when the first structural member 100 and the second structural member 200 undergo thermal expansion and contraction deformation, the thermal expansion and contraction sound generated by the deformation can be reduced or eliminated, thereby improving the quiet effect during the operation of the air conditioner, and further improving the user experience.

[0055] It should be noted that the air duct assembly will expand or contract accordingly due to the influence of thermal expansion and contraction during the cooling or heating process. Since the temperature at each position of the air duct assembly is not completely equal, there will be a temperature difference, which will cause the difference in deformation between the first structural member 100, the second structural member 200 and the spacer 300. Since the connection is in contact, when the two undergo thermal expansion and contraction with different deformation amounts, friction sound, i.e. thermal expansion and contraction sound, will be generated at the connection between the two.

[0056] In some embodiments of the present invention, the first structural member 100 and the second structural member 200 have a channel surface for defining an air supply channel. The channel surface includes the first channel surface and the second channel surface, which may 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 first channel surface and the second channel surface completely define the air supply channel, that is, the first structural member 100 and the second structural member 200 can define the air supply channel without other structures.

[0057] In some embodiments of the utility model, the first structural member 100 and the second structural member 200 have a channel surface for defining an air supply channel. The channel surface includes the first channel surface and the second 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 first structural member 100 and the second structural member 200 alone, and may only define a partial wall surface of the air supply channel. For example, the first channel surface includes the first surface 111, and the second channel surface includes the second surface 211, the second surface 211 is arranged on the rear side of the first surface 111, and the first surface 111 and the second 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.

[0058] Preferably, if Figures 1 to 7 As shown, the first structural member 100 includes a first air duct portion 110, and the first air duct portion 110 has a front volute air duct wall portion 112 and a volute tongue surface extension portion 113. The second structural member 200 includes a second air duct portion 210, and the second air duct portion 210 includes a rear volute air duct wall portion 212 and a support frame 213. The support frame 213 is arranged on the rear side of the volute tongue surface extension portion 113, and the rear volute air duct wall portion 212 is arranged on the rear side of the front volute air duct wall portion 112. The surfaces of the rear volute air duct wall portion 212 and the front volute air duct wall portion 112 facing the support frame are the first surface 111 and the second surface 211 respectively. The first air duct portion 110 is used to install the volute tongue 400 used in conjunction with the crossflow impeller. And the volute tongue surface extension portion has a third surface 115 facing the first surface 111, and the third surface 115 is located on the front side of the volute tongue 400. The third surface 115 may also be referred to as an extended surface of the wind guiding surface of the volute tongue 400 that extends forward.

[0059] Furthermore, if Figure 5 and Figure 7 As shown, a sealing plate 114 is connected to the volute tongue surface extension 113, the volute tongue surface extension 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 volute tongue surface extension 113. The rear end of the volute tongue 400 is between the support frame 213 and the rear volute air duct wall 212. In this embodiment, the volute tongue 400, the volute profile, and the third surface 115 define two side surfaces of the air supply channel.

[0060] In some embodiments of the present invention, the volute tongue 400 and the volute profile can define an air supply channel, that is, the volute tongue surface extension 113 does not have the third surface 115. In other words, part of the volute tongue 400 is on the volute tongue surface extension, covering the third surface 115. That is, the volute tongue surface extension is only a supporting and mounting structure and does not have a wind guiding function.

[0061] In some embodiments of the present invention, the first structural member 100 further includes a volute tongue 400 .

[0062] During installation, the crossflow impeller can be first installed on the second structural member 200, the volute 400 can be installed on the first air duct portion 110, and then the first structural member 100 can be installed on the second structural member 200. The first structural member 100 and the second 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.

[0063] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the support frame 213 is used to install the corresponding end of the evaporator of the air conditioner. That is, the support frame 213 can be used to cooperate with the evaporator 600 to achieve the fixing of the evaporator.

[0064] In some embodiments of the present invention, Figures 1 to 7 As shown, there are two first surfaces 111, two second surfaces 211 and three surfaces 115. There are two support frames 213, which are arranged on both sides of the rear volute air duct wall portion 212; both side surfaces of the rear volute air duct wall portion 212 are the second surfaces 211, and both side surfaces of the front volute air duct wall portion 112 are the first surfaces 111. There are two volute tongue extensions 113, which are arranged on both sides of the front volute air duct wall 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.

[0065] The two supporting frames 213 on the second structural member 200 also have the effect of enhancing the structural strength of the second structural member 200. Both ends of the evaporator 600 of the air conditioner can be installed on the two supporting frames 213 of the second structural member 200.

[0066] In some embodiments of the present invention, Figure 7As shown, each supporting 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 volute air duct wall 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 and matched. The arrangement of the sealing bevels 218 and the sealing plates 114 can play a sealing role when the first structural member 100 and the second 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 volute air duct wall 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 arranged to be inclined from the rear to the front toward the side away from the rear volute air duct wall 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 a positioning effect. Furthermore, the sealing bevel 218 and the sealing plate 114 may be provided with a sealing gasket 219.

[0067] In some embodiments of the present invention, Figure 1 , Figure 3 , Figure 6 As shown, the first structural member 100 also includes a first motor housing 120 disposed at one end of the first air duct portion 110, and a first partition 130 disposed between the first air duct portion 110 and the first motor housing 120. The second structural member 200 also includes a second motor housing 220 disposed at one end of the second air duct portion 210, and a second partition 230 disposed between the second air duct portion 210 and the second motor housing 220. The first partition 130, the second partition 230, the first motor housing 120 and the second motor housing 220 define a motor cavity for installing a motor that drives the crossflow impeller to rotate. The first structural member 100 and the second structural member 200 can be arranged vertically.

[0068] In some embodiments of the present invention, Figure 4 , Figure 8 , Fig. 9 As shown, in order to facilitate the connection between the first structural member and the second structural member and to facilitate sound elimination, the second structural member 200 includes a convex strip 250, and the first structural member 100 includes a groove 150, and the convex strip 250 is inserted into the groove 150. The top surface and / or the outer wall surface of the convex strip 250 is the second mating surface, and the second bottom surface and / or the inner groove wall surface of the groove 150 is the first mating surface.

[0069] Specifically, Figure 8 and Fig. 9As shown, the convex strip 250 and the groove 150 both extend in the up-down direction, the groove 150 is a long groove structure, and the convex strip 250 is a long strip boss structure. Moreover, the spacer 300 is arranged on the convex strip 250. In this embodiment, when the first structural member 100 and the second structural member 200 are connected, the convex strip 250 is placed in the groove 150, and the first structural member 100 and the second structural member 200 are positioned and connected. And because of the spacer 300, the thermal expansion and contraction sound generated here after the convex strip 250 and the groove 150 are connected can be reduced.

[0070] In other embodiments of the present invention, both the first mating surface and the second mating surface are arcuate surfaces or curved surfaces, which can facilitate the connection and noise reduction of the first structural member 100 and the second structural member 200. Of course, in still other embodiments of the present invention, both the first mating surface and the second mating surface are plane surfaces.

[0071] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, the spacer 300 is a muffler column 310; one end of the muffler column 310 is disposed on the second mating surface or the first mating surface. Fig.10 and Fig.11 As shown, the silencer column 310 is disposed on the second mating surface, and is used to contact the first mating surface when the first structural member or the second structural member undergoes thermal expansion and contraction.

[0072] In some embodiments of the present invention, the silencer column 310 is a small raised columnar structure with a height of 1 mm to 1.5 mm, and the contact end of the silencer column 310 is a spherical head, thereby further reducing the contact area when the silencer column 310 abuts against the first mating surface. Furthermore, the silencer column 310 abuts against the first mating surface through the arc surface of the spherical head, which can protect the position where the silencer column 310 abuts against the first mating surface to prevent scratches on the position and cause a decrease in sealing.

[0073] In some embodiments of the present invention, one side of the silencer column 310 is disposed on the second mating surface or the first mating surface. Preferably, the cross section of each silencer column 310 is a polygon, and a side wall surface of each silencer column 310 is disposed on the second mating surface or the first mating surface. Of course, each silencer column 310 may be cylindrical, and its peripheral wall surface is disposed on the second mating surface or the first mating surface.

[0074] In some embodiments of the present invention, Fig.10 and Fig.11 As shown, the spacer 300 is a muffler tooth 320. A plurality of muffler teeth 320 can be arranged in parallel to form a muffler grille. Each muffler tooth 320 is arranged on the second mating surface or the first mating surface.

[0075] In some embodiments of the present invention, in order to further improve the sealing effect, such as Figure 8 and Fig. 9 As shown, the air duct assembly further includes an air duct liner 500 disposed between the second mating surface and the first mating surface. The air duct liner 500 can be disposed on the first mating surface, or on the second mating surface. The thickness of the air duct liner is less than the width of the interval between the first mating surface and the second mating surface. Alternatively, the air duct liner contacts and abuts against both the first mating surface and the second mating surface.

[0076] Preferably, the air duct liner 500 contacts and abuts against both the first mating surface and the second mating surface. The air duct liner 500 is disposed on one of the first mating surface and the second mating surface, and the spacer 300 is disposed on the other of the first mating surface and the second mating surface. The air duct liner 500 is provided with a plurality of plug holes, and each spacer 300 can be inserted into one of the plug holes.

[0077] In some embodiments of the utility model, the air duct gasket 500 is made of flexible material, in the shape of a long strip, and is pasted on the first mating surface or the second mating surface, which can prevent the first mating surface and the second mating surface from stress contact, thereby protecting the first structural member 100 and the second structural member 200. The setting of the flexible material of the air duct gasket 500 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 air duct gasket 500 also has a sealing function, preventing the gas in the air supply channel from entering the gap between the first mating surface and the second mating surface to affect the air flow and generate noise. In this embodiment, the material of the air duct gasket 500 is flocked cloth, and the thickness is between 1mm and 3mm, and the preferred thickness is 1mm.

[0078] In some embodiments of the present invention, Figure 4 , Figure 8 and Fig. 9 As shown, since the various parts of the first structural member 100 or the second structural member 200 are affected by temperature differently, the spacer 300 can be arranged only at the position that is greatly affected by temperature, for example, the spacer 300 is arranged between the rear volute air duct wall portion 212 and the front volute air duct wall portion 112. Preferably, the convex strip 250 can be arranged on the front surface of the rear volute air duct wall portion 212, and the groove can be arranged on the rear surface of the front volute air duct wall portion 112, that is, the spacer 300 is arranged between the rear volute air duct wall portion 212 and the front volute air duct wall portion 112. Of course, in some embodiments of the utility model, the front surface of the rear volute air duct wall portion 212 is a plane, which is the second mating surface, and the rear surface of the front volute air duct wall portion 112 is a plane, which is the first mating surface.

[0079] Likewise, in some embodiments of the present invention, Fig.10 and Fig.11As shown, at the position of the partition between the air supply channel of the motor cavity, the motor is heated and the air supply channel is cooled, and the thermal expansion and contraction here are more obvious, so the end surface of the first partition facing the second partition can be the first matching surface, and the end surface of the second partition facing the first partition can be the second matching surface. That is, a spacer 300 is provided between the first partition 130 and the second partition 230, and the spacer 300 here is preferably a muffler tooth 320.

[0080] In some embodiments of the present invention, the sealing slope 218 may also be the second mating surface, and some surfaces of the sealing plate 114 facing the sealing slope 218 may also be the first mating surface, that is, the sealing slope 218 of the sealing plate 114 is provided with a spacer 300 .

[0081] 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.

[0082] Furthermore, the indoor unit of the air conditioner also includes an evaporator 600, which can be installed on the second structural member 200. When the cross-flow fan works, the airflow is prompted to flow through the evaporator 600 into the air supply channel, and then flow out of the air supply channel and the casing to enter the room for cooling or heating or maintaining a constant temperature.

[0083] 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 is connected to the second structural member, the first structural member has a first channel surface, the second structural member has a second channel surface, the first channel surface is a partial wall surface of the air supply channel, and the second channel surface is a partial wall surface of the air supply channel; The first structural member includes a first mating surface; The second structural member comprises a second mating surface, and the second mating surface faces the first mating surface; in A plurality of spacers are provided between the first mating surface and the second mating surface to promote the first mating surface and the second mating surface to move away from each other to form a gap; or, the first mating surface and the second mating surface are gap-matched, and a plurality of spacers are provided between the first mating surface and the second mating surface; The spacer is in contact with or spaced from the first mating surface, and the sum of the projected areas of the ends of the spacer facing the first mating surface on the first mating surface is smaller than the area of ​​the first mating surface; and / or The spacer is in contact with or spaced from the second mating surface, and the sum of the projected areas of the ends of the spacer facing the second mating surface on the second mating surface is smaller than the area of ​​the first mating surface.

2. The air duct assembly according to claim 1, characterized in that: The second structural member includes a convex strip, the top surface and / or the side wall surface of the convex strip is the second matching surface; the first structural member includes a groove, the convex strip is inserted into the groove; the bottom surface and / or the side wall surface of the groove is the first matching surface.

3. The air duct assembly according to claim 1, characterized in that: The spacer is a sound-absorbing column; One end of the silencer column is arranged on the second mating surface or the first mating surface; or, one side of the silencer column is arranged on the second mating surface or the first mating surface, the cross-section of each silencer column is a polygon, and a side wall surface of each silencer column is arranged on the second mating surface or the first mating surface.

4. The air duct assembly according to claim 1, characterized in that: The spacer is a sound-absorbing tooth, and each of the sound-absorbing teeth is arranged on the second matching surface or the first matching surface.

5. The air duct assembly according to claim 1, characterized in that: An air duct gasket is provided between the first mating surface and the second mating surface; The thickness of the air duct lining is smaller than the width of the interval between the first mating surface and the second mating surface; or the air duct lining is in contact with and abuts against both the first mating surface and the second mating surface.

6. The air duct assembly according to claim 2, characterized in that: The first channel surface includes a first surface and a third surface, the second channel surface includes a second surface, the second surface is arranged at the rear side of the first surface, and the first surface and the second surface form a volute profile used in conjunction with the crossflow impeller; The first structural member includes a first air duct portion, the first air duct portion having a front volute air duct wall portion and a volute tongue surface extension portion; the second structural member includes a second air duct portion, the second air duct portion including a rear volute air duct wall portion and a supporting frame; The support frame is arranged at the rear side of the volute tongue surface extension portion, the rear volute air duct wall portion is arranged at the rear side of the front volute air duct wall portion, and the surfaces of the rear volute air duct wall portion and the front volute air duct wall portion facing the support frame are the first surface and the second surface respectively; The first air channel portion is used to install a volute tongue used in conjunction with the crossflow wind wheel, and the volute tongue surface extension portion has the third surface facing the first surface, and the third surface is located at the front side of the volute tongue; The supporting frame is used to mount a corresponding end of the evaporator of the air conditioner; The convex strip is arranged at the front end of the rear volute air duct wall portion; the groove is arranged on the front volute air duct wall portion.

7. The air duct assembly of the air conditioner according to claim 6, characterized in that: The first structural member further includes a first motor housing disposed at one end of the first air channel portion, and a first partition disposed between the first air channel portion and the first motor housing; The second structural member further includes a second motor housing disposed at one end of the second air duct portion, and a second partition plate disposed between the second air duct portion and the second motor housing; The first partition plate, the second partition plate, the first motor housing and the second motor housing define a motor cavity for installing a motor for driving the crossflow impeller to rotate; The end surface of the first partition plate facing the second partition plate is the first matching surface, and the end surface of the second partition plate facing the first partition plate is the second matching surface.

8. The air duct assembly of the air conditioner according to claim 6, characterized in that: There are two of each of the first surface, the second surface and the third surface, there are two of the supporting frames, which are arranged on both sides of the rear volute air duct wall; there are two of the volute tongue surface extensions, which are arranged on both sides of the front volute air duct wall; both side surfaces of the rear volute air duct wall are the second surfaces, and both side surfaces of the front volute air duct wall are the first surfaces.

9. The air duct assembly of the air conditioner according to claim 8, characterized in that: Each of the supporting frames is provided with a sealing slope, which is inclined from the back to the front toward the side away from the rear volute air duct wall; each of the volute tongue surface extensions is provided with a sealing plate, two of the sealing plates are arranged between the two sealing slopes, and each of the sealing plates is sealed with the corresponding sealing slope.

10. 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 9; the air duct assembly is installed in the casing.

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