Indoor unit of air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit. The air conditioner indoor unit comprises a shell and an overhauling plate, and an overhauling opening is formed in one side of the shell; the overhauling plate is detachably installed at the overhauling opening, and a connecting structure is arranged between the upper position of the inner side of the overhauling plate and the inner side of the top of the shell. The connecting structure is arranged between the upper portion of the overhauling plate and the shell, so that the overhauling plate can be prevented from falling, the installation hidden danger is reduced, and the safety of the air conditioner indoor unit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to an indoor unit of an air conditioner. Background Art

[0002] An access panel or an access door is provided on the indoor unit of the air conditioner to block the access opening. Usually, a large air conditioner unit adopts an access door, and the access door is connected to the air conditioner housing through a hinge. For a small air conditioner unit, in order to make full use of the space, an access panel is usually used to block the access opening. The ceiling-mounted unit has a small size and generally uses an access panel to block the access opening. When a maintenance worker opens the access panel, the bolts fixing the access panel to the housing of the indoor unit of the air conditioner are loosened. At this time, there is no connection relationship between the access panel and the air conditioner housing, and the access panel is likely to fall. Since the ceiling-mounted unit of the indoor unit is suspended in the air, the falling of the access panel may injure people and easily cause potential safety hazards. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an indoor unit of an air conditioner that overcomes the above problems or at least partially solves the above problems, aiming to solve the problem that the access panel is likely to fall when maintaining the indoor unit of the air conditioner in the prior art, and achieve the purpose of improving the safety of the indoor unit of the air conditioner.

[0004] In view of the above problems, the present invention is proposed to provide an indoor unit of an air conditioner that overcomes the above problems or at least partially solves the above problems, which can prevent the access panel from falling, thereby reducing potential safety hazards.

[0005] Specifically, the present invention provides an indoor unit of an air conditioner, including:

[0006] A housing, on one side of which there is an access opening;

[0007] An access panel, which is detachably installed at the access opening, and there is a connection structure between the upper inner side of the access panel and the inner side of the top of the housing.

[0008] Optionally, the connection structure is a chain or a rope or a flexible cloth.

[0009] Optionally, the indoor unit of the air conditioner further includes:

[0010] A winding mechanism, which is rotatably installed inside the housing along the horizontal direction for winding the connection structure;

[0011] A first reset device for making the winding mechanism in an initial position.

[0012] Optionally, the winding mechanism includes a winding drum and a rotating shaft, the rotating shaft is fixedly installed on the housing, and the winding drum is installed on the rotating shaft through a one-way damping mechanism;

[0013] The one-way damping mechanism is configured such that when the connection structure unfolds, the winding cylinder rotates forward and has rotational damping; and when the connection structure is tightened, under the restoring force of the first restoring device, the winding cylinder automatically rotates in the reverse direction.

[0014] Optionally, the indoor unit of the air conditioner further includes:

[0015] A limiting mechanism for limiting the winding mechanism to prevent it from continuing to rotate when the connection structure unfolds to a preset length.

[0016] Optionally, the limiting mechanism includes a telescopic shaft and a second restoring device. The telescopic shaft is inserted into the housing and is located on the front side of the winding mechanism. The telescopic shaft is horizontally arranged, and a rack extending vertically is connected to the inner end; the winding mechanism includes a gear, and the second restoring device urges the rack to engage with the gear.

[0017] Optionally, the limiting mechanism includes a pin mechanism. The winding mechanism includes an annular ring, and positioning holes are provided on the annular ring. Sockets are provided on the housing. The pin mechanism is configured such that when the end of the pin mechanism passes through the socket and extends into the positioning hole, the winding mechanism is limited.

[0018] Optionally, the pin mechanism includes a sleeve and a plug rod. The sleeve includes a first sleeve section and a second sleeve section. The first sleeve section and the second sleeve section are distributed in a T shape. The second sleeve section is inserted and matched with the positioning hole; the plug rod includes a first rod section and a second rod section. The first rod section is inserted into the first sleeve section. A limiting disk is provided between the first rod section and the second rod section. Third restoring devices are provided on both sides of the limiting disk in the first sleeve. The second rod section is inserted and matched with the second sleeve section. First and second relief grooves are provided on the second rod section. The second relief groove is close to the end of the second rod section. Two relief holes are provided on both sides of the second sleeve section, and balls are installed in the relief holes;

[0019] The balls are configured such that when the plug rod is in the original position, the balls extend to the outside of the second sleeve section; when the plug rod leaves the original position and is inserted into the positioning hole, under the action of the extrusion force, the balls move into the first relief groove; when the end of the second sleeve section extends outside the positioning hole, under the restoring action of the third restoring device, the plug rod is reset and the balls extend to the outside of the second sleeve section; when the limitation on the annular ring is released, the plug rod is pulled to move away from the positioning hole. Under the action of the extrusion force, the balls enter the second relief groove, and when the second sleeve section completely moves outside the annular ring, the plug rod returns to the original position and the balls extend to the outside of the second sleeve section.

[0020] Optionally, the winding mechanism includes a winding drum and a rotating shaft; the rotating shaft is installed on the housing in a one-way rotating manner; the winding drum is installed on the rotating shaft through a two-way damping mechanism.

[0021] Optionally, the indoor unit of the air conditioner further includes:

[0022] A plurality of fixing structures for detachably installing the inspection plate at the inspection opening.

[0023] In the indoor unit of the air conditioner of the present invention, by providing a connection structure between the upper part of the inspection plate and the housing, the inspection plate can be prevented from falling, reducing the installation hidden danger and improving the safety of the indoor unit of the air conditioner.

[0024] Furthermore, on the premise of eliminating the safety hidden danger of the inspection plate falling, the maintenance personnel can quickly complete the disassembly and assembly of the inspection plate, thereby improving the disassembly and assembly efficiency of the inspection plate, and further improving the maintenance efficiency of the indoor unit of the air conditioner.

[0025] Even further, the disassembly and assembly of the inspection plate can be completed by only one maintenance personnel, reducing the labor cost.

[0026] From the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more clear about the above and other objects, advantages and features of the present invention. Description of the Drawings

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail with reference to the accompanying drawings in an exemplary but non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a winding mechanism according to an embodiment of the present invention;

[0031] Figure 4 is a schematic structural diagram of a winding mechanism according to an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a winding mechanism according to an embodiment of the present invention;

[0033] Figure 6Schematic diagram of the use state of the limit mechanism according to an embodiment of the present invention;

[0034] Figure 7 Schematic structural diagram of the limit mechanism according to an embodiment of the present invention;

[0035] Figure 8 Schematic structural diagram of the winding mechanism according to an embodiment of the present invention;

[0036] Figure 9 Schematic diagram of the use state of the limit mechanism according to an embodiment of the present invention;

[0037] Figure 10 Schematic diagram of the use state of the limit mechanism according to an embodiment of the present invention;

[0038] Figure 11 Schematic diagram of the use state of the limit mechanism according to an embodiment of the present invention;

[0039] Figure 12 Schematic structural diagram of an indoor air conditioner according to an embodiment of the present invention. Detailed implementation manners

[0040] The following refers to Figures 1 to 12 to describe the indoor unit of the air conditioner according to the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0041] Unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific situations.

[0042] Unless otherwise specified, the character " / " indicates that the objects before and after are an "or" relationship. For example, A / B means: A or B.

[0043] The term "and / or" describes the relationship between objects and indicates that there can be three relationships. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0044] The term "corresponding" can refer to an associative relationship or a binding relationship. That A corresponds to B means that there is an associative relationship or a binding relationship between A and B.

[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 additional features therebetween. That is, in the description of this embodiment, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath", or "below" the second feature may be that the first feature is directly below or diagonally below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0046] In the description of this embodiment, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] In the prior art, when it is necessary to repair the indoor unit of an air conditioner, multiple repair personnel are required to cooperate and slowly open the repair opening 11 to avoid the repair plate 60 from falling. Therefore, in the prior art, the disassembly and assembly efficiency of the repair plate 60 is relatively slow. To solve the above technical problems, the present invention provides a connection structure 20 between the repair plate 60 and the housing 10 to avoid the repair plate 60 from falling, thereby improving the repair efficiency.

[0048] Figure 1 is a schematic structural diagram of an indoor unit of an air conditioner, as Figure 1 shown, and with reference to Figures 2 to 12 , an embodiment of the present invention provides an indoor unit of an air conditioner.

[0049] An indoor unit of an air conditioner includes a housing 10 and a maintenance panel 60. A maintenance opening 11 is provided on one side of the housing 10. The maintenance panel 60 is detachably installed at the maintenance opening 11, and a connection structure 20 is provided between the upper inner side of the maintenance panel 60 and the inner top of the housing 10 to prevent the maintenance panel 60 from falling when the maintenance opening 11 is opened.

[0050] As Figure 12 shown, when the indoor unit is operating normally, the maintenance panel 60 is arranged at the maintenance opening 11 to block the maintenance opening 11 to ensure the safe operation of the indoor unit. When it is necessary to maintain the indoor unit of the air conditioner, the maintenance opening 11 needs to be opened at this time.

[0051] The steps to open the maintenance opening 11 are as follows: First, the maintenance personnel separate the maintenance panel 60 from the housing 10 so that the maintenance panel 60 leaves the maintenance opening 11; at this time, under the action of the connection structure 20, as Figure 2 shown, the maintenance panel 60 will be hoisted near the maintenance opening 11, or when the connection structure 20 is long and the space at the top of the housing is large, as Figure 1 shown, the maintenance panel 60 can be turned over to the top of the housing 10, and the maintenance panel 60 will not fall.

[0052] In this embodiment, by providing the connection structure 20 between the upper part of the maintenance panel 60 and the housing 10, the maintenance panel 60 can be prevented from falling, reducing the installation hidden danger and improving the safety of the indoor unit of the air conditioner.

[0053] Furthermore, on the premise of eliminating the safety hidden danger of the maintenance panel 60 falling, the maintenance personnel can quickly complete the disassembly and assembly work of the maintenance panel 60, thereby improving the disassembly and assembly efficiency of the maintenance panel 60, and further improving the maintenance efficiency of the indoor unit of the air conditioner.

[0054] Even further, the disassembly and assembly work of the maintenance panel 60 can be completed by only one maintenance personnel, reducing the labor cost.

[0055] In some embodiments of the present invention, the connection structure 20 is a flexible connection structure, and the connection structure 20 is rotatable.

[0056] In some alternative embodiments of the present invention, the connection structure 20 is a rope. The rope has the advantages of firmness and reliability and low cost. Using the rope as the connection structure 20 is not only convenient for installation and manufacturing, but also has a low production cost.

[0057] In some alternative embodiments of the present invention, the connection structure 20 is a chain. Compared with the rope, the chain is more firm and reliable. Using the chain as the connection structure 20 is not only convenient for installation and manufacturing, but also has a higher safety performance.

[0058] In some alternative embodiments of the present invention, the connection structure 20 is a flexible cloth.

[0059] As Figure 3 shown, in some alternative embodiments of the present invention, the indoor unit of the air conditioner further includes a winding mechanism 30 and a first reset device 40. The winding mechanism 30 is rotatably mounted horizontally inside the housing 10 for winding the connection structure 20. The first reset device 40 is configured to bring the winding mechanism 30 to an initial position to ensure that the connection structure 20 is tightened when the maintenance panel 60 is located at the maintenance opening 11.

[0060] In this embodiment, when the maintenance panel 60 leaves the maintenance opening 11, the winding mechanism 30 rotates forward, and the connection structure 20 moves away from the initial position and unfolds; when the maintenance panel 60 blocks the maintenance opening 11, under the action of the first reset device 40, the winding mechanism 30 rotates in the reverse direction, and the connection structure 20 is tightened and restored to the initial position. By providing the winding mechanism 30 and the first reset device 40, it is convenient to store the connection structure 20, and it can avoid potential safety hazards caused by the connection structure 20 to the indoor unit of the air conditioner during normal operation of the indoor unit of the air conditioner; in addition, the service life of the connection structure 20 can also be extended.

[0061] In some alternative embodiments of the present invention, the first reset device 40 is a torsion spring.

[0062] As Figure 3 shown, in some alternative embodiments of the present invention, the winding mechanism 30 includes a winding drum 31 and a rotating shaft 32. The rotating shaft 32 is fixedly installed on the housing 10, and the winding drum 31 is installed on the rotating shaft 32 through a one-way damping mechanism. The one-way damping mechanism is configured such that when the connection structure 20 unfolds, the winding drum 31 rotates forward and has a rotational damping; and when the connection structure 20 is tightened, under the reset force of the first reset device 40, the winding drum 31 automatically rotates in the reverse direction.

[0063] In this embodiment, the rotating shaft 32 is the first rotating shaft, and the winding drum 31 is the first winding drum. The rotating shaft 32 extends horizontally. The connection structure 20 is wound around the winding drum 31. The first reset device 40 is connected between the end of the winding drum 31 and the housing 10.

[0064] Specifically, one end of the first reset device 40 is connected to the end of the winding drum 31, and the other end of the first reset device 40 is connected to the inner wall of the housing 10.

[0065] This embodiment provides a specific structure of the winding mechanism 30, which has the beneficial effects of simple structure and easy manufacturing.

[0066] As Figure 4 shown, in some other alternative embodiments of the present invention, the winding mechanism 30 includes a winding drum 31 and a rotating shaft 32; the rotating shaft 32 is installed on the housing 10 in a one-way rotating manner, and the winding drum 31 is installed on the rotating shaft 32 through a two-way damping mechanism.

[0067] Specifically, the rotating shaft 32 is the second rotating shaft, and the winding cylinder 31 is the second winding cylinder. A bearing sleeve 35 is installed at the end of the rotating shaft 32. The first reset device 40 is connected between the end of the winding cylinder 31 and the housing 10. One end of the first reset device 40 is connected to the end of the winding cylinder 31, and the other end of the first reset device 40 is connected to the inner wall of the housing 10.

[0068] In this embodiment, the winding mechanism 30 is configured such that when the connecting structure 20 is deployed, the winding cylinder 31 rotates forward with a rotational damping, and the rotating shaft 32 and the bearing sleeve 35 are fixed; and when the connecting structure 20 is tightened, under the action of the restoring force of the first reset device 40, the winding cylinder 31 drives the rotating shaft 32 to automatically rotate reversely relative to the one-way bearing sleeve 35.

[0069] The winding mechanism 30 of this embodiment has the advantages of simple structure and convenient design. Each component of the winding mechanism 30 can be directly purchased externally, without special design.

[0070] As Figures 5 - 11 shown, in some alternative embodiments of the present invention, the air conditioner indoor unit further includes a limiting mechanism 50 for limiting the winding mechanism to prevent it from continuing to rotate when the connecting structure 20 is deployed to a preset length.

[0071] When the space at the top of the housing 10 is small, at this time, the maintenance plate 60 cannot be flipped to the top of the housing 10. At this time, under the action of the limiting mechanism 50, the winding mechanism can be in a limiting and locking state, so that the connecting structure 20 is deployed and maintains an appropriate length.

[0072] In this embodiment, by providing the limiting mechanism 50, the deployment length of the connecting structure 20 can be limited as needed, and the safety performance during the disassembly of the maintenance plate 60 can be further improved.

[0073] As Figures 5 - 7 shown, in some alternative embodiments of the present invention, the limiting mechanism 50 includes a telescopic shaft 51 and a second reset device 52. The telescopic shaft 51 is inserted into the housing 10 and is located on the front side of the winding mechanism 30. The telescopic shaft 51 is horizontally arranged, and the inner end is connected with a rack 53 extending vertically; the winding mechanism 30 includes a gear 33, and the second reset device 52 urges the rack 53 to engage with the gear 33.

[0074] Specifically, the telescopic shaft 51 and the rack 53 are distributed in a T shape. The gear 33 is arranged on the winding cylinder 31, and the gear 33 rotates synchronously with the winding cylinder 31. The second reset device 52 is a spring. One end of the second reset device 52 is connected to the inner wall of the housing 10, and the other end of the second reset device 52 is connected to the rack 53.

[0075] The limiting mechanism 50 is configured such that when the winding mechanism 30 is in the initial position, the second reset device 52 urges the rack 53 to engage with the gear 33; when the winding mechanism 30 needs to rotate, the telescopic shaft 51 is pulled out of the housing 10 to release the limiting lock on the winding mechanism 30, and the second reset device 52 is deformed; when the connecting structure 20 is deployed to the preset position, the telescopic shaft 51 is released, and under the action of the second reset device 52, the telescopic shaft 51 is reset and urges the rack 53 to engage with the gear 33, realizing the limitation of the gear 33, and thus realizing the limitation of the winding bobbin 31.

[0076] This embodiment provides a specific limiting mechanism 50, which has the advantages of simple structure and easy manufacturing.

[0077] As Figures 8 - 11 shown, in some alternative embodiments of the present invention, the limiting mechanism 50 includes a pin mechanism 54, the winding mechanism 30 includes an annular ring 34, the annular ring 34 is provided with a positioning hole 341, and the housing 10 is provided with a socket. The pin mechanism is configured such that when the end of the pin mechanism 54 passes through the socket and extends into the positioning hole 341, the winding mechanism 30 is limited.

[0078] Specifically, the socket is provided on the front side of the housing 10, the annular ring 34 is fixedly provided on the winding bobbin 31, and the annular ring 34 rotates synchronously with the winding bobbin 31. The annular ring 34 can be provided at the end of the winding bobbin 31. One positioning hole 341 or multiple positioning holes 341 can be provided on the annular ring 34. The positioning hole 341 extends along the radial direction of the annular ring 34. When there are multiple positioning holes 341, the multiple positioning holes 341 are evenly distributed along the circumferential direction of the annular ring 34.

[0079] This embodiment provides a specific limiting mechanism 50, which has the advantages of simple structure and easy manufacturing.

[0080] As Figures 10 - 11 shown, in some alternative embodiments of the present invention, there is a gap between the inner circumferential surface of the annular ring 34 and the rotating shaft 32. The pin mechanism 54 includes a sleeve body 541 and a plug rod 542. The sleeve body 541 includes a first sleeve body section 5411 and a second sleeve body section 5412. The first sleeve body section 5411 and the second sleeve body section 5412 are distributed in a T shape, and there is a step surface between the first sleeve body section 5411 and the second sleeve body section 5412. The second sleeve body section 5412 is inserted and matched with the positioning hole 341.

[0081] The plug rod 542 includes a first rod section 5421 and a second rod section 5422. The first rod section 5421 is inserted into the first sleeve body section 5411. A limiting disc 548 is provided between the first rod section 5421 and the second rod section 5422. Third reset devices 547 are provided on both sides of the limiting disc 548 within the first sleeve body 541. The second rod section 5422 is inserted and matched with the second sleeve body section 5412. A first relief groove 5451 and a second relief groove 5452 are provided on the second rod section 5422. The second relief groove 5452 is close to the end of the second rod section 5422. Two relief holes 544 are provided on both sides of the second sleeve body section 5412, and balls 543 are installed in the relief holes 544.

[0082] The balls 543 are configured such that when the plug rod 542 is in the original position, the balls 543 extend to the outside of the second sleeve body section 5412; when the plug rod 542 leaves the original position and is inserted into the positioning hole 341, under the action of the extrusion force, the balls 543 move into the first relief groove 5451; when the end of the second sleeve body section 5412 extends outside the positioning hole 341, under the reset action of the third reset device 547, the plug rod 542 is reset and the balls 543 extend to the outside of the second sleeve body section 5412; when the limit on the annular ring 34 is released, the plug rod 542 is pulled to move to the side away from the positioning hole 341, and under the action of the extrusion force, the balls 543 enter the second relief groove 5452, and when the second sleeve body section 5412 completely moves outside the annular ring 34, the plug rod 542 returns to the original position and the balls 543 extend to the outside of the second sleeve body section 5412.

[0083] Compared with ordinary bolts, the bolt mechanism 54 of this embodiment is specially designed. By providing the balls 543, the first relief groove 5451, the second relief groove 5452 and the relief holes 544, when the bolt mechanism 54 is inserted in place, the two balls 543 are in extrusion fit with the inner surface of the annular ring 34, and the step surface between the first sleeve body section 5411 and the second sleeve body section 5412 is in extrusion fit with the outer surface of the annular ring 34, so as to improve the limiting ability and locking ability of the bolt mechanism 54.

[0084] Furthermore, a handle 546 is provided at the end of the plug rod 542 to facilitate the limiting or unlocking of the annular ring 34.

[0085] Such as Figure 9As shown, in some alternative embodiments of the present invention, the bolt mechanism 54 is a bolt. A cylinder 12 is provided inside the housing 10. A fourth reset device 549 is provided inside the cylinder 12. The fourth reset device 549 is a spring, one end of which is connected to the inner rod and the other end is connected to the inner wall of the cylinder 12. The bolt is inserted into the cylinder 12 and can extend through the cylinder 12 into the positioning hole 341. When the bolt is pulled out from the positioning hole 341, the fourth reset device 549 is deformed; when the connection structure 20 is unfolded to a preset length, the bolt is released, and under the action of the fourth reset device 549, the bolt can be automatically inserted into the positioning hole 341.

[0086] As Figure 12 shown, in some embodiments of the present invention, the air conditioner indoor unit further includes a plurality of fixing structures 70 for detachably mounting the maintenance plate 60 at the maintenance opening 11.

[0087] The plurality of fixing structures 70 are provided on the housing 10 and at or near the maintenance opening 11. The number and specific installation positions of the fixing structures 70 can be set as required. Specifically, the fixing structure 70 includes a bolt and a clamping block. When fixedly installing the maintenance plate 60 at the maintenance opening 11, first tighten the bolt, and then bring the clamping block into contact with the maintenance plate 60 so that the maintenance plate 60 is fixedly connected to the housing 10; when separating the maintenance plate 60 from the maintenance opening 11, first loosen the bolt, and then rotate the clamping block so that the clamping block is separated from the maintenance plate 60.

[0088] Further, in some alternative embodiments of the present invention, the bolt is a wing nut. In some alternative embodiments, the bolt can also be of other models.

[0089] In some alternative embodiments of the present invention, the air conditioner indoor unit further includes four fixing structures 70. One fixing structure 70 is provided at each of the upper and lower positions on the left side of the maintenance opening 11, and one fixing structure 70 is provided at each of the upper and lower positions on the right side of the maintenance opening 11.

[0090] In some other alternative embodiments of the present invention, the air conditioner indoor unit further includes five fixing structures 70. One fixing structure 70 is provided at each of the upper and lower positions on the left side of the maintenance opening 11, one fixing structure 70 is provided at each of the upper and lower positions on the right side of the maintenance opening 11, and one fixing structure 70 is provided above the maintenance opening 11. Preferably, one fixing structure 70 is provided at the middle position above the maintenance opening 11.

[0091] In some other alternative embodiments of the present invention, the air conditioner indoor unit further includes a plurality of fixing structures 70. At least one fixing structure 70 is located above the maintenance opening 11. Or, at least one fixing structure 70 is located below the maintenance opening 11. During use, the fixing structure 70 located above or below the maintenance opening 11 can be disassembled last, which can prevent the maintenance plate 60 from quickly separating from the housing and improve the disassembly safety performance.

[0092] In some alternative embodiments of the present invention, the indoor unit of the air conditioner may only include the connection structure 20 and not include the winding mechanism 30.

[0093] In some alternative embodiments of the present invention, the indoor unit of the air conditioner is a modular air conditioner.

[0094] A modular air conditioning unit (English name: Modular Air Conditioning Unit) is an air conditioning unit composed of multiple functional sections. Depending on the different cold (heat) sources, the modular air conditioning unit can be divided into two types: chilled water type and direct evaporation type.

[0095] A modular air conditioning unit that uses chilled water (or hot water, etc.) as the cold (heat) source is generally called a modular air handling unit (Modular Air Handling Unit or Central-station Air Handling Unit). The modular air handling unit is the most important terminal equipment in the central air conditioning system. It forms a large central air conditioning system together with chilled water units such as modular units, screw units, and centrifugal units.

[0096] A modular air conditioning unit that uses direct evaporation (i.e., direct refrigeration by the compressor) is generally designed and manufactured in the form of a rooftop unit, that is, a modular rooftop air conditioning unit (Modular Rooftop Air Conditioning Unit). The modular rooftop air conditioning unit sends the processed air to the space that needs air conditioning through an external air duct.

[0097] A modular air conditioning unit generally consists of more than three functional sections. Such as: primary fresh air and return air section, surface cooler and water baffle section, heating section, humidifying section, secondary return air section, fan section, sound absorption section, medium efficiency filtration section, sterilization section, and heat recovery section, etc. Different air treatment requirements can be achieved through the combination of different functional sections. The modular air conditioning unit has relatively high requirements for the air leakage rate, cold bridge factor, and mechanical strength of the box body of the unit.

[0098] 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 content 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 determined to cover all these other variations or modifications.

Claims

1. An indoor unit of an air conditioner, characterized in that, Comprising: A housing, with an inspection opening provided on one side of the housing; An inspection plate, which is detachably installed at the inspection opening, and a connection structure is provided between the upper inner side of the inspection plate and the inner top of the housing.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The connection structure is a chain or a rope or a flexible cloth.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, Further comprising: A winding mechanism, which is rotatably installed horizontally inside the housing for winding the connection structure; A first reset device for bringing the winding mechanism to its initial position.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The winding mechanism includes a winding drum and a rotating shaft, the rotating shaft is fixedly installed on the housing, and the winding drum is installed on the rotating shaft through a one-way damping mechanism; The one-way damping mechanism is configured such that when the connection structure unfolds, the winding drum rotates forward and has a rotational damping; and when the connection structure is tightened, under the reset force of the first reset device, the winding drum automatically rotates in the reverse direction.

5. The indoor unit of the air conditioner according to claim 3, characterized in that, Further comprising: A limiting mechanism for limiting the winding mechanism to prevent it from continuing to rotate when the connection structure unfolds to a preset length.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The limiting mechanism includes a telescopic shaft and a second reset device, the telescopic shaft is inserted into the housing and is located in front of the winding mechanism, the telescopic shaft is horizontally arranged, and a rack extending vertically is connected to the inner end; the winding mechanism includes a gear, and the second reset device urges the rack to engage with the gear.

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The limiting mechanism includes a plugging mechanism, the winding mechanism includes an annular ring, positioning holes are provided on the annular ring, and sockets are provided on the housing, and the plugging mechanism is configured such that when the end of the plugging mechanism passes through the socket and extends into the positioning hole, the winding mechanism is limited.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The plugging mechanism includes a sleeve and a plug rod, the sleeve includes a first sleeve section and a second sleeve section, the first sleeve section and the second sleeve section are distributed in a T shape, and the second sleeve section is inserted and matched with the positioning hole; the plug rod includes a first rod section and a second rod section, the first rod section is inserted into the first sleeve section, a limiting disk is provided between the first rod section and the second rod section, third reset devices are provided on both sides of the limiting disk inside the first sleeve, the second rod section is inserted and matched with the second sleeve section, first and second relief grooves are provided on the second rod section, the second relief groove is close to the end of the second rod section, two relief holes are provided on both sides of the second sleeve section, and balls are installed in the relief holes, and the balls are configured such that when the plug rod is in its original position, the balls extend to the outside of the second sleeve section; when the plug rod leaves its original position and is inserted into the positioning hole, the balls move into the first relief groove; when the end of the second sleeve section extends outside the positioning hole, under the reset action of the third reset device, the plug rod resets and the balls extend to the outside of the second sleeve section; when the limitation on the annular ring is released, the plug rod is pulled to move away from the positioning hole, the balls enter the second relief groove, and when the second sleeve section completely moves outside the annular ring, the plug rod returns to its original position and the balls extend to the outside of the second sleeve section.

9. The indoor unit of the air conditioner according to claim 3, characterized in that, The winding mechanism includes a winding cylinder and a rotating shaft; the rotating shaft is installed on the housing in a one-way rotating manner; the winding cylinder is installed on the rotating shaft through a bidirectional damping mechanism.

10. The indoor unit of the air conditioner according to claim 1, characterized in that, It further includes: a plurality of fixing structures for detachably installing the inspection plate at the inspection opening.

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