A new air take-over assembly installation structure

Abstract

The present invention discloses a fresh air pipe assembly mounting structure, comprising a rear cover plate and a fresh air pipe assembly. The rear cover plate includes a fresh air interface, and the fresh air pipe assembly includes a pipe joint. The fresh air pipe assembly is connected to the fresh air interface through a rotational engagement of the pipe joint, thereby achieving a quick and secure connection between the fresh air pipe assembly and the air conditioner.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a fresh air pipe assembly installation structure. Background Art

[0002] Fresh air air conditioners need to draw air in from the outdoors and introduce it into the indoor space. Generally, a fresh air duct needs to be added to connect the indoor and outdoor spaces. One end of the duct is connected to the outdoors and the other end is connected to the indoor space. The end connected to the indoor space also needs to be connected to the air conditioner casing and connected to the fresh air fan system.

[0003] Existing fresh air pipe assemblies mostly use a socket-fixed method to socket with the fresh air interface inside the air conditioner. This method requires an interference fit because the fresh air hose is directly socketed, which makes installation difficult and reduces the air tightness of the interface after the hose ages. Summary of the Invention

[0004] In order to solve the above problems, the present invention discloses a fresh air pipe assembly installation structure to provide a convenient and reliable fresh air pipe assembly structure.

[0005] According to one aspect of an embodiment of the present invention, a fresh air pipe assembly installation structure is provided, including a rear cover plate and a fresh air pipe assembly, the rear cover plate includes a fresh air interface, the fresh air pipe assembly includes a pipe joint and a fresh air pipe, and the fresh air pipe is connected to the fresh air interface through a rotational fit of the pipe joint.

[0006] Preferably, the indoor inner wall of the fresh air interface has multiple first clamping parts, the inner wall of the fresh air interface also has a limiting surface, the first clamping part and the limiting surface form a first limiting groove, the pipe joint has a second clamping part that cooperates with the first limiting groove, and the outer wall of the pipe joint also has a limiting ring, the second clamping part and the limiting ring form a second limiting groove, and the second clamping part cooperates with the first clamping part.

[0007] Preferably, one end of the first clamping portion is bent toward the indoor side with a first limiting plate, and correspondingly, one end of the second clamping portion is bent toward the outdoor side with a second limiting plate, so that when the pipe joint and the fresh air interface are rotated and clamped, the first limiting plate abuts against the other end of the second clamping portion, and the second limiting plate abuts against the other end of the first clamping portion.

[0008] Preferably, the first clamping portion further includes a limiting column located therein, and the second clamping portion further includes a notch portion away from one end of the second limiting plate, so that when the pipe joint is rotated and clamped with the fresh air interface, the limiting column is embedded in the notch portion.

[0009] Preferably, the limiting column is adjacent to the first limiting plate.

[0010] Preferably, the notch portion is configured as a concave structure in the middle.

[0011] Preferably, the profile of the notch is an arc transition curve.

[0012] Preferably, the width of the first clamping portion is smaller than the width of the limiting surface, and the width of the second clamping portion is smaller than the width of the limiting ring.

[0013] Preferably, a wedge-shaped protrusion is provided on the inner side end surface of the first clamping portion.

[0014] Preferably, the fresh air connecting pipe and the pipe joint are sealed by a corrugated boss structure.

[0015] This enables quick, firm, and fixed connection between the fresh air pipe assembly and the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0018] Figure 1 This is a disassembled schematic diagram of a fresh air pipe assembly installation structure of the present invention;

[0019] Figure 2 This is a partially enlarged schematic diagram of the installation structure of a fresh air pipe assembly according to the present invention;

[0020] Figure 3 This is a disassembled schematic diagram of a pipe joint of a fresh air take-over assembly installation structure of the present invention;

[0021] Figure 4 This is a three-dimensional schematic diagram of a fresh air interface of a fresh air pipe assembly installation structure of the present invention;

[0022] Figure 5 This is a cross-sectional view of a fresh air interface of a fresh air pipe assembly installation structure of the present invention;

[0023] Figure 6This is a three-dimensional schematic diagram of a fresh air interface of another fresh air pipe assembly installation structure of the present invention.

[0024] Description of Reference Numerals

[0025] 100-rear cover, 110-fresh air interface, 111-first clamping part, 112-first limiting plate, 113-limiting column, 114-wedge-shaped protrusion, 115-limiting surface, 120-pipe hole, 130-mounting hole, 140-limiting piece, 150-connecting piece, 151-handle,

[0026] 200-Fresh air connection,

[0027] 300-rear shell, 310-limiting hole, 320-threaded hole,

[0028] 400-external connector, 410-shield, 420-external connection, 421-external key, 430-external chuck, 440-protective net,

[0029] 500 - pipe joint, 510 - internal connection part, 511 - first boss, 512 - second boss, 520 - limiting ring, 530 - second clamping part, 531 - second limiting plate, 532 - notch part. DETAILED DESCRIPTION

[0030] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0031] The present invention discloses a fresh air pipe assembly installation structure, such as Figure 1-2 As shown, the rear portion of the indoor unit housing has a rear housing plate 300 with a convex-shaped hollow portion on the rear housing plate 300. The hollow portion is covered with a rear cover plate 100. Correspondingly, the rear cover plate 100 is convex-shaped. The rear cover plate 100 is detachably mounted on the hollow portion of the rear housing plate 300 and forms an integral part with the indoor unit housing.

[0032] The rear cover plate 100 is detachably fixedly connected to the fresh air connecting pipe assembly to introduce outdoor fresh air.

[0033] The fresh air connection assembly includes an external connector 400 located outdoors, a pipe connector 500 located indoors, and a fresh air connection 200 connecting the external connector 400 and the pipe connector 500. The pipe connector 500 is connected and fixed to the rear cover plate 100.

[0034] like Figure 3As shown, the external connector 400 includes a shield 410, an external connection portion 420, an external clamping plate 430, and a protective screen 440. The external connector 400 is secured to the fresh air connection pipe 200 via the external connection portion 420. The shield 410 shields the upper half of the air inlet of the external connector 400 from rain and snow. The external clamping plate 430, located between the external connection portion 420 and the shield 410, is designed to engage and seal with the exterior wall. The air inlet of the external connector 400 is covered by a protective screen 440 to prevent foreign matter from entering the fresh air connection pipe assembly.

[0035] The external latch 421 is a wedge-shaped protruding latch that gradually rises from the inside to the outside. The external latch 421 is located around the external connection part 420 and is used to insert the external connection part 420 from the outside into the room during installation and to fasten the external connection part 420 to the wall.

[0036] The fresh air connection pipe 200 is a corrugated pipe with corrugated grooves and protrusions distributed on both the inner and outer sides of the pipe wall. The inner wall of the external connection portion 420 has a boss that engages with the corrugated grooves and protrusions of the fresh air connection pipe 200, so that the external connection portion 420 is firmly connected to the outer side of the fresh air connection pipe 200.

[0037] The outdoor side of the pipe joint 500 is sleeved onto the fresh air duct 200. From outside to inside, the pipe joint 500 includes an internal connection portion 510, a retaining ring 520, and a second clamping portion 530. The internal connection portion 510 includes a first boss 511 and a second boss 512. The first boss 511 and the second boss 512 are located on the inner wall surface of the internal connection portion 510 and are arranged circumferentially. The distance between the first boss 511 and the second boss 512 is an integer multiple of the distance between adjacent corrugated grooves on the outer wall of the fresh air duct 200. The first boss 511 and the second boss 512 are arranged in a circular array within the inner wall surface of the internal connection portion 510. As a result, the first boss 511 and the second boss 512 are sleeved and sealed with the grooves and protrusions on the corrugated outer wall of the fresh air duct 200.

[0038] The second clamping portion 530 is clamped with the fresh air interface 110 on the rear cover 100 . The limiting ring 520 cooperates with the second clamping portion 530 to clamp with the fresh air interface 110 .

[0039] The rear cover 100 has a convex fresh air interface 110 at the lower middle part. Figure 4 、 5 As shown, the inner wall of the flange of the fresh air interface 110 has a first engaging portion 111, which is used to twist and engage with the corresponding second engaging portion 530 on the pipe connector 500 of the fresh air pipe assembly, thereby enabling quick and easy assembly and disassembly of the fresh air pipe assembly. The other end of the fresh air pipe assembly extends outdoors and introduces outdoor fresh air through the external connector 400. The air inlet of the external connector 400 is covered by a dense grid protective net 440 to prevent outdoor foreign matter from entering the fresh air pipe assembly. The upper end of the external connector 400 is equipped with a semi-enclosed shield 410 to protect against rain and frost, and to prevent damage such as corrosion and blockage to the fresh air pipe assembly.

[0040] The rear cover 100 has an arched notch, or pipe hole 120, in the center of the bottom, for accommodating the indoor and outdoor unit connecting pipe. This hole is located directly below the fresh air inlet 110. The fresh air inlet 110 and pipe hole 120 are integrated into the rear cover 100, facilitating the integrated installation of the fresh air connection assembly and the indoor and outdoor unit connecting pipe. The rear cover 100 also has a mounting hole 130 in the center of the top, for screw connection to the corresponding threaded hole 320 at the top of the hollowed-out portion of the rear shell 300. This hole is located directly above the fresh air inlet 110. The rear cover 100 has plug-in limiting pieces 140 on both sides of the bottom, which are plugged into the limiting holes 310 corresponding to the bottom ends of the hollow portion of the rear shell 300. When installing the rear cover 100, the limiting piece 140 at the lower end of the rear cover is first inserted into the limiting hole 310 to limit the position, and then the rear cover 100 is buckled onto the hollow portion of the rear shell 300. Then, the mounting hole 130 and the threaded hole 320 are tightly connected and fixed with screws, thereby achieving simple installation of the rear cover. When disassembling, the rear cover 100 can be disassembled by simply unscrewing the screws on the mounting hole 130 and flipping the rear cover 100 outward. In particular, when the rear cover 100 is removed only for inspection and maintenance of its internal components, the limiting piece 140 can be limited at a certain angle in the limiting hole 310 without having to completely remove the rear cover 100, thereby improving the convenience of disassembly and maintenance.

[0041] The local enlarged structure of the clamping structure at the interface of the fresh air take-over assembly installation structure is as follows Figure 3-5 The outer end of the fresh air inlet 110 has a plurality of first clamping portions 111. The plurality of first clamping portions 111 are arranged in a circumferential array on the inner wall of the flange at the outer end of the fresh air inlet 110 in a spaced-apart manner, forming a boss structure having a first width extending from the inner wall of the flange at the outer end of the fresh air inlet 110 toward the axis of the fresh air inlet 110.

[0042] A first limiting plate 112 is bent inward at one end of the first clamping portion 111, integrally forming a radially L-shaped structure with the first clamping portion 111. A limiting surface 115 is provided on the inner end of the first limiting plate 112 of the fresh air inlet 110. This limiting surface 115 is formed as an annular boss extending from the center of the circumferential inner wall of the fresh air inlet 110 toward the axis of the fresh air inlet 110, with a second width. Consequently, the limiting surface 115, the first clamping portion 111, and the first limiting plate 112 cooperate to form a first limiting groove with one end open and the other closed. The first limiting groove has a first opening direction.

[0043] The second width of the limiting surface 115 is greater than the first width of the first clamping portion 111 , thereby facilitating positioning and support during assembly and improving convenience during assembly.

[0044] A limiting column 113 is provided inside the first clamping portion 111 near the first limiting plate 112. The limiting column 113 is a columnar structure extending inward from the inner end surface of the first clamping portion 111. The diameter of the limiting column 113 is smaller than the first width of the first clamping portion 111.

[0045] Correspondingly, the pipe joint 500 of the fresh air duct assembly 200 has a second clamping portion 530 that engages with the plurality of first clamping portions 111. The second clamping portion 530 is configured as a boss structure extending centrifugally from the outer wall of the inner flange of the pipe joint 500 by a third width. Corresponding to the plurality of first clamping portions 111, the plurality of second clamping portions 530 are spaced apart and arranged in a circumferential array on the outer wall of the inner flange of the pipe joint 500.

[0046] Moreover, the circumferential length of the second clamping portion 530 is not greater than the circumferential distance between two adjacent first clamping portions 111 , and the circumferential length of the first clamping portion 111 is not greater than the circumferential distance between two adjacent second clamping portions 530 .

[0047] Furthermore, the width of the second clamping portion 530 is smaller than the width of the first limiting groove.

[0048] One end of the second clamping portion 530 is bent outward to form a second limiting plate 531 to form an L-shaped structure in the radial direction together with the second clamping portion 530 .

[0049] A retaining ring 520 is provided on the outer end of the second retaining plate 531 of the pipe joint 500. The retaining ring 520 is formed as an annular boss extending from the outer circumference of the pipe joint 500 away from the axis of the pipe joint 500 by a fourth width. Thus, the retaining ring 520, the second clamping portion 530, and the second retaining plate 531 cooperate to form a second retaining groove, open at one end and closed at the other. The second retaining groove has a second opening direction, which is opposite to the first opening direction. Furthermore, the width of the second retaining groove is greater than the width of the first clamping portion 111.

[0050] The fourth width of the limiting ring 520 is greater than the third width of the second clamping portion 530 , thereby facilitating positioning and support during assembly and improving convenience during assembly.

[0051] The second clamping portion 530 has an M-shaped wave-shaped notch 532 at one end away from the second limiting plate 531. The M-shaped wave-shaped notch 532 is configured with two relatively protruding ends and a recessed middle.

[0052] Thus, when the pipe joint 500 is assembled and fixed to the fresh air interface 110, the pipe joint 500 penetrates into the first clamping portion 111 through the second clamping portion 530 and is staggered and inserted. Then, the pipe joint 500 is rotated along the second opening direction, so that the second clamping portion 530 is inserted into the first limiting groove along the opening of the first limiting groove. At the same time, the first clamping portion 111 is also inserted into the second limiting groove along the opening of the second limiting groove. When the notch 532 of the second clamping portion 530 contacts the limiting post 113, the notch 532 of the second clamping portion 530 is squeezed and guided by the limiting post 113, thereby finally clamping and fixing the middle recessed structure of the notch 532 to the limiting post 113. At the same time, the open side end of the second clamping portion 530 abuts against the inner end surface of the first limiting plate 112, and the inner end surface of the second limiting plate 531 abuts against the open side end of the first clamping portion 111, forming a rotational clamping fixation.

[0053] Specifically, the notch 532 is narrowest at the end and gradually widens toward the second stop plate 531 until it matches the width of the second clamping portion 530. This inclined surface facilitates insertion and rotation of the second clamping portion and cooperates with the stop post to achieve self-locking. The profile of the notch 532 is a circular transition profile. This circular transition curve improves operational smoothness and reduces wear. When the fresh air interface 110 and the pipe joint 500 are engaged with each other, the second engaging portion 530 is screwed into the first engaging portion 111 from the "M" wavy notch portion 532. When the "M" wavy notch portion 532 continues to be screwed in until it touches the limiting column 113, the curved surface of the "M" wavy notch portion 532 is squeezed by the limiting column 113 and firmly clamped toward the circumferential wall of the fresh air interface 110. Finally, the limiting column 113 is accommodated in the middle recess of the "M" wavy notch portion 532 and locked. At the same time, the first limiting plate 112 and the second limiting plate 531 simultaneously press against the ends of the second engaging portion 530 and the first engaging portion 111 to achieve a firm connection.

[0054] In some embodiments, the first clamping portion 111 and the second clamping portion 530 have the same length and width, and the distance between adjacent first clamping portions 111 is the same as the distance between adjacent second clamping portions 530, so as to form a smooth and seamless fit.

[0055] In some embodiments, the width of the first limiting groove is equal to the width of the second limiting groove to avoid a fitting gap.

[0056] In some embodiments, as Figure 5 As shown, a wedge-shaped protrusion 114 is further provided inside the first clamping portion 111. The wedge-shaped protrusion 114 is configured to be raised inward from the inner end surface of the first clamping portion 111. The elevation gradient of the wedge-shaped protrusion 114 is configured to gradually rise from an end away from the first limiting plate 112 to an end toward the first limiting plate 112.

[0057] The limiting post 113 is located between the wedge-shaped protrusion 114 and the first limiting plate 112. The maximum height of the wedge-shaped protrusion 114 is less than the height of the limiting post 113. The length of the wedge-shaped protrusion 114 is less than the length of the first clamping portion 111. The wedge-shaped protrusion 114 is located in the middle of the inner end surface of the first clamping portion 111.

[0058] Thus, when the pipe joint 500 is assembled and fixed to the fresh air interface 110, the pipe joint 500 penetrates into the first clamping portion 111 through the second clamping portion 530 and is staggered and plugged in. Then, the pipe joint 500 is rotated along the second opening direction so that the second clamping portion 530 is inserted into the first limiting groove along the opening of the first limiting groove. At the same time, correspondingly, the first clamping portion 111 is also inserted into the second limiting groove along the opening of the second limiting groove. At this time, the open side end of the second clamping portion 530 first contacts the wedge-shaped protrusion 114, and as the second clamping portion 530 gradually penetrates, the second clamping portion 530 is gradually lifted by the wedge-shaped protrusion 114, so that the second clamping portion 530 is squeezed by the wedge-shaped protrusion 114 and gradually pressed against the outer end face of the limiting surface 115. When the notch 532 of the second clamping portion 530 contacts the limiting post 113, the notch 532 of the second clamping portion 530 is squeezed and guided by the limiting post 113, thereby finally clamping and fixing the middle recessed structure of the notch 532 to the limiting post 113. At the same time, the open end of the second clamping portion 530 abuts against the inner end surface of the first limiting plate 112, and the inner end surface of the second limiting plate 531 abuts against the open end of the first clamping portion 111. At the same time, the second clamping portion 530 and the outer end surface of the limiting surface 115 are completely pressed and sealed. Thus, the pipe joint 500 and the fresh air interface 110 are rotatably clamped and fixed in a sealed manner.

[0059] In some embodiments, as Figure 6 As shown, the fresh air inlet 110 is detachably and rotatably fixedly connected to the rear cover 100 via an annular connector 150. The diameter of the connector 150 is larger than the diameter of the fresh air inlet 110. The fresh air inlet 110 and the connector 150 are integrally connected, welded, or threaded. The connector 150 has at least two handles 151 to facilitate rotational force application.

[0060] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "back" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0062] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A fresh air pipe assembly installation structure, comprising a rear cover plate (100) and a fresh air pipe assembly, characterized in that: The rear cover plate (100) includes a fresh air interface (110), and the fresh air pipe assembly includes a pipe joint (500) and a fresh air pipe (200), and the fresh air pipe (200) is connected to the fresh air interface (110) through a rotational engagement of the pipe joint (500); The outdoor end inner wall of the fresh air interface (110) is provided with a plurality of first clamping portions (111), the inner wall of the fresh air interface (110) is also provided with a limiting surface (115), the first clamping portion (111) and the limiting surface (115) form a first limiting groove, the pipe joint (500) is provided with a second clamping portion (530) that is engaged with the first limiting groove, the outer wall of the pipe joint (500) is also provided with a limiting ring (520), the second clamping portion (530) and the limiting ring (520) form a second limiting groove, and the second clamping portion (530) is engaged with the first clamping portion (111); One end of the first clamping portion (111) is bent toward the indoor side to form a first limiting plate (112), and correspondingly, one end of the second clamping portion (530) is bent toward the outdoor side to form a second limiting plate (531), so that when the pipe joint (500) is rotated and clamped with the fresh air interface (110), the first limiting plate (112) and the other end of the second clamping portion (530) abut against each other, and the second limiting plate (531) and the other end of the first clamping portion (111) abut against each other; The first clamping portion (111) further includes a limiting column (113) located therein, and the second clamping portion (530) further includes a notch portion (532) away from one end of the second limiting plate (531), so that when the pipe joint (500) is rotated and clamped with the fresh air interface (110), the limiting column (113) is embedded in the notch portion (532); The width of the first clamping portion (111) is smaller than the width of the limiting surface (115), and the width of the second clamping portion (530) is smaller than the width of the limiting ring (520); A wedge-shaped protrusion (114) is provided on the inner end surface of the first clamping portion (111), and the wedge-shaped protrusion (114) gradually rises from an end away from the first limiting plate (112) to an end toward the first limiting plate (112), and the limiting column (113) is located between the wedge-shaped protrusion (114) and the first limiting plate (112); the maximum height of the wedge-shaped protrusion (114) is less than the height of the limiting column (113), and the length of the wedge-shaped protrusion (114) is less than the length of the first clamping portion (111); the wedge-shaped protrusion (114) is located in the middle of the inner end surface of the first clamping portion (111).

2. The fresh air pipe assembly installation structure according to claim 1, characterized in that: The limiting column (113) is adjacent to the first limiting plate (112).

3. The fresh air pipe assembly installation structure according to claim 1, characterized in that: The notch portion (532) is configured as a central concave structure.

4. The fresh air pipe assembly installation structure according to claim 1, characterized in that: The profile of the notch portion (532) is a circular arc transition curve.

5. The fresh air pipe assembly installation structure according to any one of claims 1 to 4, characterized in that: The fresh air connecting pipe (200) and the pipe joint (500) are sleeve-connected and sealed via a corrugated boss structure.

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