Dismounting method for a ducted air conditioner and its electric heater

Abstract

The application relates to a ducted air conditioner and a dismounting method of an electric heater thereof. The ducted air conditioner comprises a shell having a containing cavity, an air inlet and an air outlet communicating with the containing cavity; a partition plate located in the containing cavity, the partition plate dividing the containing cavity into a return air cavity and an outlet air cavity, at least one return air opening being arranged on the partition plate to enable the return air cavity and the outlet air cavity to communicate with each other; oppositely arranged first and second supports located in the outlet air cavity, at least one of the first and second supports being provided with a fixing hole; and an electric heater arranged in the outlet air cavity, at least one end of the electric heater being connected with the fixing hole through a fastener, wherein the axis of the fastener is directed towards the partition plate, and an operator can dismount the fastener from the return air opening to enable the electric heater to be taken out from the return air cavity side through the return air opening. According to the application, the electric heater can be dismounted without dismounting cover plates and other parts and without damaging a suspended ceiling, thereby reducing maintenance cost, improving product competitiveness and user satisfaction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a ducted air conditioner and a method for disassembling an electric heater thereof. BACKGROUND

[0002] A ducted air conditioner indoor unit, referred to as a ducted air conditioner, is selected by a large number of commercial and household scenarios because of its unique characteristics of strong concealment and not damaging the home decoration style. An electric heater is generally installed at an air outlet of the ducted air conditioner or inside the ducted air conditioner, and is used for auxiliary heating. However, the electric heater installed at the air outlet is easy to be touched by mistake by a user, and there is an electrical safety hazard. The electric heater installed inside the ducted air conditioner is generally fixed with parts such as upper and lower cover plates and left and right side plates of the ducted air conditioner. When disassembled after sale, the cover plates of the ducted air conditioner need to be opened. However, the height of an actual home ceiling is low, and there is no operation space to disassemble the cover plates, which leads to that the ducted air conditioner cannot be overhauled after sale, or the overhaul cost is high and the efficiency is low. SUMMARY

[0003] The purpose of the present application is to provide a ducted air conditioner and a method for disassembling an electric heater thereof, which can disassemble the electric heater without disassembling cover plates and other parts and without damaging the ceiling, so as to reduce the overhaul cost, improve the product competitiveness and user satisfaction.

[0004] In a first aspect, an embodiment of the present application provides a ducted air conditioner, comprising: a shell having a receiving cavity, an air inlet and an air outlet which are in communication with the receiving cavity; a partition plate located in the receiving cavity, the partition plate divides the receiving cavity into a return air cavity and an air outlet cavity, the return air cavity and the air inlet are located on the same side, the air outlet cavity and the air outlet are located on the same side, at least one return air opening is arranged on the partition plate to enable the return air cavity and the air outlet cavity to communicate with each other; oppositely arranged first and second supports located in the air outlet cavity, at least one of the first and second supports is provided with a fixing hole; and an electric heater arranged in the air outlet cavity, at least one end of the electric heater is connected with the fixing hole through a fastener, wherein an axis of the fastener is directed towards the partition plate, and an operator can disassemble the fastener from the return air opening to enable the electric heater to be taken out from the return air opening on one side of the return air cavity.

[0005] In a possible implementation, the length of the electric heater is L, the movable depth of the electric heater in the air outlet cavity is d1, the movable depth of the electric heater in the return air cavity is d2, the minimum included angle between one end of the electric heater and the partition plate when the one end of the electric heater extends out of the return air opening on one side of the air outlet cavity is a, and the minimum included angle between the other end of the electric heater and the partition plate when the other end of the electric heater extends out of the return air opening to one side of the return air cavity is β, and the following conditions are met:

[0006]

[0007] In a possible implementation, the width of the return air inlet is W, the first distance between one side of the return air inlet along its width direction and the inner wall of the shell adjacent to the one side is h1, the second distance between the other side of the return air inlet along its width direction and the inner wall of the shell adjacent to the other side is h2, and the following condition is satisfied:

[0008]

[0009] In a possible implementation, the fastener is a screw or a bolt, and the fixing hole is a threaded hole.

[0010] In a possible implementation, the fastener includes a shaft portion and a flexible clamping portion connected to the shaft portion, an acute angle is formed between the free end of the flexible clamping portion away from the shaft portion and the shaft portion, and the fixing hole is a via hole allowing the shaft portion and part of the flexible clamping portion to pass through.

[0011] In a possible implementation, the projection of the fastener on the partition plate at least partially overlaps the corresponding return air inlet.

[0012] In a possible implementation, two return air inlets are arranged at intervals on the partition plate, and the electric heater can be removed from one side of the return air cavity through any one of the return air inlets.

[0013] In a possible implementation, either of the first support and the second support is provided with a fixing hole, the other of the first support and the second support is provided with an assembly hole penetrating through the thickness thereof, one end of the electric heater passes through the assembly hole, and the other end of the electric heater is connected to the fixing hole through the fastener.

[0014] In a possible implementation, the ducted air conditioner further includes a fan, the fan is arranged in the return air cavity, and the fan is detachably connected to the return air cavity.

[0015] In a possible implementation, the ducted air conditioner further includes an evaporating device, the evaporating device is arranged in the outlet air cavity, one end of the evaporating device is connected to the first support, the other end of the evaporating device is connected to the second support, and the electric heater is located between the evaporating device and the partition plate.

[0016] In a possible implementation, the ducted air conditioner further includes an evaporating device, the evaporating device is arranged in the outlet air cavity, one end of the evaporating device is connected to the first support, the other end of the evaporating device is connected to the second support, and the electric heater is located between the evaporating device and the partition plate.

[0017] In a possible implementation, the return air cavity is provided with a fan, and before the fastener fixing the electric heater is removed from the return air inlet on one side of the return air cavity through the return air inlet of the partition plate, the fan is removed from one side of the return air cavity through the access hole.

[0018] In a possible implementation, the fastener is a screw or a bolt, and the removing the fastener fixing the electric heater through the return air opening of the partition plate comprises: extending a maintenance tool from the return air opening to one side of the air outlet cavity; aligning the maintenance tool with the fastener at least one end of the electric heater, and loosening the fastener in the counterclockwise direction to remove the fastener from the fixing hole of at least one of the first support and the second support.

[0019] In a possible implementation, the fastener comprises a shaft portion and a flexible clamping portion connected with the shaft portion, and the removing the fastener fixing the electric heater through the return air opening of the partition plate comprises: extending a maintenance tool from the return air opening to one side of the air outlet cavity; aligning the maintenance tool with the fastener at least one end of the electric heater, and clamping the free end of the shaft portion and the flexible clamping portion to remove the fastener from the fixing hole of at least one of the first support and the second support.

[0020] The air duct machine and the method for disassembling the electric heater thereof provided by the embodiments of the present application, by arranging the electric heater in the air outlet cavity of the shell, at least one end of the electric heater is connected with the support in the air outlet cavity through the fastener, wherein the axis of the fastener is towards the partition plate, and the operator can remove the fastener from the return air opening, so that the electric heater can be taken out from one side of the return air cavity through the return air opening, thereby the electric heater can be disassembled without disassembling the cover plate and other parts and damaging the suspended ceiling, the maintenance cost is reduced, and the product competitiveness and user satisfaction are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn according to the actual proportions, but are used only to illustrate the relative positional relationship, and the layer thickness of some parts is exaggerated in the drawing for the purpose of understanding. The layer thickness in the drawings does not represent the actual proportion of the layer thickness.

[0022] Figure 1 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown;

[0023] Figure 2 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown; Figure 1 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown;

[0024] Figure 3 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown; Figure 2 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown;

[0025] Figure 4 An overall structure schematic diagram of the air duct machine provided by the embodiments of the present application is shown; Figure 3 An overall structure schematic diagram of the electric heater of the air duct machine provided by the embodiments of the present application is shown;

[0026] Figure 5 An overall structure schematic diagram of the electric heater of the air duct machine provided by the embodiments of the present application is shown;

[0027] Figure 6 A simplified structure diagram showing that one end of the electric heater extends from the return air outlet on the side of the air outlet cavity;

[0028] Figure 7 A simplified structure diagram showing that the other end of the electric heater extends to the side of the return air cavity through the return air outlet;

[0029] Figure 8 A flowchart showing the disassembly method of the electric heater of the ducted air conditioner provided by the embodiment of the application.

[0030] Explanation of reference signs:

[0031] 1, housing; 10, air inlet; 11, air outlet;

[0032] 2, partition; 2a, return air cavity; 2b, air outlet cavity; 21, return air outlet; 3, first support; 31, assembly hole; 4, second support; 41, fixing hole; 5, electric heater; 6, fastener; 7, fan; 8, evaporation device. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some but not all of the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] Figure 1 A schematic diagram showing the overall structure of the ducted air conditioner provided by the embodiment of the application; Figure 2 A schematic diagram showing Figure 1 A schematic diagram showing the structure of the ducted air conditioner with the upper cover plate removed; Figure 3 A schematic diagram showing Figure 2 A schematic diagram showing the structure of the ducted air conditioner with the fan removed; Figure 4 A schematic diagram showing Figure 3 A schematic diagram showing the assembly structure of the electric heater of the ducted air conditioner.

[0035] As Figures 1 to 4 shown, the embodiment of the application provides a ducted air conditioner, which comprises a housing 1, a partition 2, oppositely arranged first and second supports 3 and 4, an electric heater 5, a fan 7 and an evaporation device 8.

[0036] The housing 1 has a containing cavity and an air inlet 10 and an air outlet 11 communicating with the containing cavity, and the containing cavity is generally in the shape of a cube formed by upper and lower cover plates and left and right side plates.

[0037] The baffle 2 is located in the accommodating cavity, the baffle 2 divides the accommodating cavity into a return air cavity 2a and an outlet air cavity 2b, the return air cavity 2a is located on the same side as the air inlet 10, the outlet air cavity 2b is located on the same side as the air outlet 11, and at least one return air outlet 21 is arranged on the baffle 2 to enable the return air cavity 2a and the outlet air cavity 2b to communicate with each other;

[0038] The oppositely arranged first support 3 and second support 4 are located in the outlet air cavity 2b, and at least one of the first support 3 and the second support 4 is provided with a fixing hole 41. The first support 3 and the second support 4 are arranged on opposite sides of the outlet air cavity 2b and are used to connect two ends of the electric heater 5.

[0039] The electric heater 5 is arranged in the outlet air cavity 2b, and at least one end of the electric heater 5 is connected with the fixing hole 41 through a fastener 6, wherein the axis of the fastener 6 is directed towards the baffle 2, and the fastener 6 can be removed from the return air outlet 21 by an operator, so that the electric heater 5 can be taken out from the return air cavity 2a side through the return air outlet 21.

[0040] When the ducted air conditioner needs to be repaired due to a fault of the electric heater 5, since the actual height of the ceiling installed in the ducted air conditioner is low, there is no operation space to remove any one of the upper and lower cover plates and the left and right side plates of the shell 1, and it is inconvenient to disassemble and take out the electric heater 5 from the outlet air cavity 2b.

[0041] Therefore, in the embodiment of the present application, the electric heater 5 is arranged in the outlet air cavity 2b of the shell 1, and at least one end of the electric heater 5 is connected with the fixing hole 41 through a fastener 6, wherein the axis of the fastener 6 is directed towards the baffle 2, the position of the fastener 6 can be observed by an operator from the return air outlet 21, and the fastener 6 can be removed from the return air outlet 21 by the operator, so that in the after-sales repair, the components in the return air cavity 2a, such as the fan 7, can be removed through the repair opening in the ceiling first, and then the fastener 6 for fixing the electric heater 5 is removed from the return air outlet 21 by using a repair tool, so that the disassembly of the electric heater 5 is completed. Then the electric heater 5 is taken out from the return air cavity 2a side through the return air outlet 21, so that the electric heater 5 can be disassembled without disassembling the internal parts of the ducted air conditioner and without damaging the ceiling, thereby reducing the repair cost, improving the product competitiveness and user satisfaction.

[0042] Figure 5 A structure diagram showing that the electric heater is taken out from the return air outlet is shown; Figure 6 A simplified structure diagram showing that one end of the electric heater is stretched out from the return air outlet on one side of the outlet air cavity is shown; Figure 7 A simplified structure diagram showing that the other end of the electric heater is stretched out to the return air cavity side through the return air outlet is shown.

[0043] As Figures 5 to 7As shown, the process of removing the fastener 6 fixing the electric heater 5 after removing the ducted air conditioner from the access hole in the ceiling, and then taking out the electric heater 5 from the return air opening 21 of the partition 2, mainly includes two steps:

[0044] First step: one end of the electric heater 5 is stretched out from the return air opening 21 on one side of the air outlet cavity 2b;

[0045] Second step: the other end of the electric heater 5 is stretched out from the return air opening 21 to the side of the return air cavity 2a;

[0046] In order to complete the above two steps, the partition 2 and the electric heater 5 need to meet certain size requirements.

[0047] Specifically, the length of the electric heater 5 is L, the movable depth of the electric heater 5 in the air outlet cavity 2b is d1, the movable depth of the electric heater 5 in the return air cavity 2a is d2, the minimum angle between the one end of the electric heater 5 and the partition 2 when the one end of the electric heater 5 is stretched out from the return air opening 21 on one side of the air outlet cavity 2b is α, the minimum angle between the other end of the electric heater 5 and the partition 2 when the other end of the electric heater 5 is stretched out from the return air opening 21 to the side of the return air cavity 2a is β, and the following conditions are met:

[0048]

[0049] Among them, the angle α can ensure that after the fastener 6 is removed, the one end of the electric heater 5 can have the minimum activity space when it is stretched out from the return air opening 21 on one side of the air outlet cavity 2b. The angle β can ensure that after the one end of the electric heater 5 is stretched out from the return air opening 21 on one side of the air outlet cavity 2b to the return air cavity 2a, the other end of the electric heater 5 can also be stretched out from the return air opening 21 to the return air cavity 2a when it should have the minimum activity space.

[0050] In addition, the width of the return air opening 21 is W, the first distance between the side of the return air opening 21 along the width direction of itself and the inner wall adjacent to the shell 1 is h1, and the second distance between the other side of the return air opening 21 along the width direction of itself and the inner wall adjacent to the shell 1 is h2, and the following conditions are met:

[0051]

[0052] Among them, the first distance h1 and the second distance h2 limit the size of the return air opening 21 and the position relationship between the return air opening 21 and the inner wall of the shell 1, so as to ensure that the whole electric heater 5 can be stretched out from the return air opening 21 on one side of the air outlet cavity 2b to the return air cavity 2a and taken out.

[0053] In some embodiments, the fastener 6 is a screw or a bolt, and the fixing hole 41 is a threaded hole. At least one of the first bracket 3 and the second bracket 4 is provided with the fixing hole 41, the fastener 6 is a screw or a bolt, the fastener 6 is in threaded connection with the fixing hole 41, and the tool for maintenance is a screwdriver or a combination of a screwdriver and a sleeve.

[0054] Optionally, the orthographic projection of the fixing hole 41 on the partition plate 2 at least partially overlaps the return air outlet 21, so that the fastener 6 can be quickly removed by the tool for maintenance without tilting or by using a simple tool for maintenance, thereby improving the efficiency of maintenance.

[0055] In one example, the orthographic projection of the fixing hole 41 on the partition plate 2 completely overlaps the return air outlet 21, and the fastener 6 can be removed by using a straight screwdriver to directly face the return air outlet 21 or by slightly tilting the straight screwdriver. In another example, the orthographic projection of the fixing hole 41 on the partition plate 2 partially overlaps the return air outlet 21, and the fastener 6 can be removed by using a bent screwdriver or a combination of a screwdriver and a sleeve. In this way, during maintenance, the fastener 6 for fixing the electric heater 5 can be loosened and removed from the return air outlet 21 by the tool for maintenance, and the dismounting of the electric heater 5 can be completed.

[0056] In some embodiments, the fastener 6 comprises a shaft portion and a flexible clamping portion connected to the shaft portion, an acute angle is formed between the free end of the flexible clamping portion away from the shaft portion and the shaft portion, and the fixing hole 41 is a via hole allowing the shaft portion and part of the flexible clamping portion to pass through. The fastener 6 can be an injection molded plastic part, and the material can be Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC), or the like. The flexible clamping portion is in a cantilever structure, an acute angle is formed between the free end of the flexible clamping portion away from the shaft portion and the shaft portion, and the fastener 6 is detachably clamped at the fixing hole 41 by changing the included angle between the flexible clamping portion and the shaft portion. The tool for maintenance can be tweezers or the like.

[0057] During maintenance, the shaft portion and the free end of the flexible clamping portion can be clamped by the tweezers from the return air outlet 21 to remove the fastener 6 from the fixing hole 41, and the dismounting of the electric heater 5 can be completed.

[0058] In some embodiments, two return air outlets 21 are arranged at intervals on the partition plate 2, and the electric heater 5 can be taken out from one side of the return air cavity 2a through any one of the return air outlets 21. In this way, the operator can dismount the electric heater 5 from any side according to the individual's habit of using hands, and the convenience of dismounting is further improved.

[0059] In some embodiments, either the first bracket 3 or the second bracket 4 is provided with a fixing hole 41, and the other of the first bracket 3 and the second bracket 4 is provided with an assembly hole 31 that penetrates its own thickness. One end of the electric heater 5 passes through the assembly hole 31, and the other end of the electric heater 5 is connected to the fixing hole 41 by a fastener 6.

[0060] like Figure 4 As shown in one example, the first bracket 3 has an assembly hole 31 extending through its own thickness, and the second bracket 4 has a fixing hole 41. The axis of the fixing hole 41 faces the partition 2, and the orthographic projection of the fixing hole 41 on the partition 2 overlaps with the return air vent 21. The assembly hole 31 only serves to support the electric heater 5, while the fixing hole 41 not only supports the electric heater 5 but also serves to fix it. Correspondingly, a return air vent 21 is provided on the partition 2, which allows operators to use maintenance tools to remove the fasteners 6 that fix the electric heater 5 from the return air vent 21.

[0061] In another example, both the first bracket 3 and the second bracket 4 are provided with fixing holes 41. Correspondingly, the partition 2 is provided with two spaced return air vents 21. The operator uses maintenance tools to remove the two fasteners 6 that fix the electric heater 5 from the two return air vents 21 respectively.

[0062] In some embodiments, the fan 7 is disposed in the return air chamber 2a, and the fan 7 is detachably connected to the return air chamber 2a. Optionally, the number of fans 7 can be at least two, and two adjacent fans 7 can be driven by the same motor shaft to reduce space occupation. The fan 7 is generally detachably connected to the return air chamber 2a by fasteners. With this configuration, the fan 7 can be disassembled through the access port, and then the fasteners 6 fixing the electric heater 5 can be removed using maintenance tools.

[0063] In some embodiments, the evaporator 8 is disposed in the air outlet chamber 2b, and one end of the evaporator 8 is connected to the first support 3, the other end of the evaporator 8 is connected to the second support 4, and the electric heater 5 is located between the evaporator 8 and the partition 2.

[0064] The working principle of the duct air conditioner in this embodiment is as follows: the fan 7 in the return air chamber 2a of the housing 1 rotates to generate airflow, which enters the outlet air chamber 2b through the return air port 21, passes through the electric heater 5 in the outlet air chamber 2b and then enters the evaporator 8 for heat exchange, and is then blown out from the outlet air port 11 to complete the temperature regulation of the surrounding environment.

[0065] Figure 8 This is a flowchart illustrating a method for disassembling the electric heater of a ducted air conditioner according to an embodiment of this application.

[0066] like Figure 8As shown, the embodiment of the present application also provides a method for disassembling the electric heater of the duct type air conditioner, comprising the following steps S1-S4, and the specific steps of the method for disassembling the electric heater of the duct type air conditioner are described in detail below in combination with the drawings.

[0067] Step S1: removing the fastener 6 fixing the electric heater 5 from the return air opening 21 of the partition 2 on the side of the return air chamber 2a;

[0068] Step S2: extending one end of the electric heater 5 out of the return air opening 21 on the side of the air outlet chamber 2b;

[0069] Step S3: extending the other end of the electric heater 5 out of the return air opening 21 to the side of the return air chamber 2a;

[0070] Step S4: taking the electric heater 5 out of the air inlet opening 10 of the housing 1.

[0071] Further, before step S1, i.e. before removing the fastener 6 fixing the electric heater 5 from the return air opening 21 of the partition 2 on the side of the return air chamber 2a, the method for disassembling the electric heater of the duct type air conditioner further comprises:

[0072] Step S0: removing the fan 7 from the side of the return air chamber 2a through the access opening, so as to leave a space for disassembling the electric heater 5.

[0073] In some embodiments, the fastener 6 is a screw or a bolt, and step S1 of removing the fastener 6 fixing the electric heater 5 from the return air opening 21 of the partition 2 on the side of the return air chamber 2a comprises:

[0074] Step S11: extending the maintenance tool into the side of the air outlet chamber 2b from the return air opening 21;

[0075] Step S12: aligning the maintenance tool with the fastener 6 of at least one end of the electric heater 5, and loosening the fastener 6 in the counterclockwise direction to remove the fastener 6 from the fixing hole 41 of at least one of the first bracket 3 and the second bracket 4.

[0076] In some embodiments, the fastener 6 comprises a shaft portion and a flexible clamping portion connected with the shaft portion, and step S1 of removing the fastener 6 fixing the electric heater 5 from the return air opening 21 of the partition 2 on the side of the return air chamber 2a comprises:

[0077] Step S11: extending the maintenance tool into the side of the air outlet chamber 2b from the return air opening 21;

[0078] Step S12: aligning the maintenance tool with the fastener 6 of at least one end of the electric heater 5, and clamping the free end of the shaft portion and the flexible clamping portion to remove the fastener 6 from the fixing hole 41 of at least one of the first bracket 3 and the second bracket 4.

[0079] The method for dismounting the electric heater of the air duct machine provided by the embodiment of the application, by setting the electric heater 5 in the air outlet cavity 2b of the shell 1 and parallel to the partition plate 2, at least one end of the electric heater 5 is connected with the fixing hole 41 through the fastener 6, wherein the axis of the fastener 6 is towards the partition plate 2, and the orthographic projection of the fastener 6 on the partition plate 2 at least partially overlaps the air return port 21, so that the electric heater 5 can be taken out from the side of the air return cavity 2a through the air return port 21, thereby the electric heater 5 can be dismounted without dismounting the cover plate and other parts and without damaging the suspended ceiling, the maintenance cost is reduced, and the product competitiveness and user satisfaction are improved.

[0080] It should be noted that the phrases "one embodiment," "an embodiment," "some embodiments," "exemplary embodiment," "one example," "an example," "some examples," and the like as used herein mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiment. Further, the appearance of the phrases in various places in the specification is not necessarily referring to the same embodiment. Further, where a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with an alternative embodiment.

[0081] It should be readily understood that the terms "on," "above," and "on top of" in the present disclosure are to be interpreted in the broadest context possible so that "on" means not only "directly on" but also includes within its meaning "on" with intervening features or layers therebetween, and "above" or "on top of" includes within its meaning "above" or "on top of" with no intervening features or layers therebetween (i.e., directly on).

[0082] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0083] It should be noted that, in the present document, relational terms such as "first" and "second", and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0084] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some or all of the technical features; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments.

Claims

1. A ducted air conditioner, characterized in that, include: The housing has a receiving cavity and an air inlet and an air outlet communicating with the receiving cavity; A partition is located inside the accommodating cavity, which divides the accommodating cavity into a return air cavity and an air outlet cavity. The return air cavity and the air inlet are located on the same side, and the air outlet cavity and the air outlet cavity are located on the same side. At least one return air outlet is provided on the partition so that the return air cavity and the air outlet cavity can communicate with each other. A first bracket and a second bracket are positioned opposite each other in the air outlet cavity, and at least one of the first bracket and the second bracket is provided with a fixing hole; as well as An electric heater is disposed in the air outlet cavity, and at least one end of the electric heater is connected to the fixing hole via a fastener. The fastener's axis faces the partition, and the operator can remove the fastener from the return air inlet so that the electric heater can be removed from one side of the return air chamber via the return air inlet; In the width direction of the return air inlet, the length of the electric heater is L, and the width of the return air inlet is W, where L > W; The electric heater has a length of L, an movable depth of d1 in the air outlet cavity, an movable depth of d2 in the air return cavity, and a minimum angle α between one end of the electric heater and the partition when it extends from the air return port on one side of the air outlet cavity, and a minimum angle β between the other end of the electric heater and the partition when it extends from the air return port to one side of the air return cavity, satisfying the following conditions: ； ； The width of the return air vent is W, the first distance between one side of the return air vent along its own width direction and the adjacent inner wall of the housing is h1, and the second distance between the other side of the return air vent along its own width direction and the adjacent inner wall of the housing is h2, and the following conditions are satisfied: ， 。 2. The duct air conditioner according to claim 1, characterized in that, The fastener is a screw or bolt, and the fixing hole is a threaded hole.

3. The duct air conditioner according to claim 1, characterized in that, The fastener includes a shaft portion and a flexible snap-fit ​​portion connected to the shaft portion. The free end of the flexible snap-fit ​​portion away from the shaft portion forms an acute angle with the shaft portion. The fixing hole is a through hole that allows the shaft portion and part of the flexible snap-fit ​​portion to pass through.

4. The duct air conditioner according to claim 1, characterized in that, The orthographic projection of the fastener on the partition plate at least partially overlaps with the corresponding return air vent.

5. The duct air conditioner according to claim 1, characterized in that, The partition is provided with two return air inlets spaced apart, and the electric heater can be removed from one side of the return air chamber through either of the return air inlets.

6. The ductwork unit according to any one of claims 1 to 5, characterized in that, Either the first bracket or the second bracket is provided with the fixing hole, and the other one of the first bracket and the second bracket is provided with an assembly hole that penetrates its own thickness. One end of the electric heater passes through the assembly hole, and the other end of the electric heater is connected to the fixing hole through the fastener.

7. The duct air conditioner according to claim 1, characterized in that, It also includes a fan, which is disposed in the return air chamber and is detachably connected to the return air chamber.

8. The duct air conditioner according to claim 1, characterized in that, It also includes an evaporation device, which is disposed in the air outlet cavity, with one end of the evaporation device connected to the first support and the other end of the evaporation device connected to the second support. The electric heater is located between the evaporation device and the partition.

9. A method for disassembling the electric heater of a ducted air conditioner as described in any one of claims 1 to 8, characterized in that, include: Remove the fasteners securing the electric heater from the return air cavity side through the return air inlet of the partition; One end of the electric heater extends from the return air inlet on one side of the air outlet cavity; The other end of the electric heater extends through the return air inlet to one side of the return air chamber; Remove the electric heater from the air inlet of the housing.

10. The disassembly method according to claim 9, characterized in that, A fan is installed inside the return air chamber. Before removing the fasteners fixing the electric heater from the return air inlet of the partition on one side of the return air chamber, the procedure further includes: The fan is removed from the return air chamber via the inspection port.

11. The disassembly method according to claim 9, characterized in that, The fastener is a screw or bolt, and the removal of the fastener fixing the electric heater from the return air cavity side through the return air inlet of the partition includes: Insert the maintenance tools from the return air inlet into one side of the air outlet cavity; Align the inspection tool with the fastener at at least one end of the electric heater and loosen the fastener counterclockwise to remove the fastener from the fixing hole of at least one of the first bracket and the second bracket.

12. The disassembly method according to claim 9, characterized in that, The fastener includes a shaft portion and a flexible snap-fit ​​portion connected to the shaft portion. Removing the fastener fixing the electric heater from the return air chamber side through the return air inlet of the partition includes: Insert the maintenance tools from the return air inlet into one side of the air outlet cavity; Align the inspection tool with the fastener at at least one end of the electric heater, and clamp the free ends of the shaft and the flexible snap-fit ​​portion to remove the fastener from the fixing hole of at least one of the first bracket and the second bracket.

Images