CHANNEL-TYPE AIR CONDITIONING SYSTEM AND METHOD FOR ITS INSTALLATION

Description

TECHNICAL FIELD

[0001] The invention belongs to the field of air conditioning technologies, and in particular, to a ducted air conditioner and an assembly method thereof.BACKGROUND

[0002] A ducted air conditioner is an indoor unit of the air conditioner, which is connected to an outdoor unit of the air conditioner through a copper pipe. The ducted air conditioner blows cold air or hot air directly to each room through an air duct. Due to a hidden installation of the ducted air conditioner, it has less effect on the aesthetically pleasing of the room and an advantage of a simple structure, which makes the maintenance convenient, so it is widely used.

[0003] Due to an increase in a demand of the ducted air conditioner, an improvement on a production efficiency of the ducted air conditioner is imminent.

[0004] At present, an existing ducted air conditioner is composed of separate components assembled through screws. Accordingly, a large number of screws are used for fixing in a production process, resulting in a high labor consumption and a low efficiency. Moreover, the ducted air conditioner has a large number of components, and assembly steps thereof are complicated, making it difficult to automatically produce the ducted air conditioner. In addition, screw holes of sheet metal members are prone to defects such as misalignment of screw holes and slippery thread of screw holes. In this case, the sheet metal members or the screws need to be replaced, which will further affects the production efficiency, and makes it difficult to meet a large demand of the market.

[0005] CN 107 192 020 A provides a duct type air conditioner. The duct type air conditioner comprises a shell body, a fan assembly, a volute assembly, a wind duct plate, a heat exchanging assembly and a water receiving plate, wherein the fan assembly, the volute assembly, the wind duct plate, the heat exchanging assembly and the water receiving plate are arranged in the shell body. The volute assembly comprises a foaming shaped upper volute and a foaming shaped lower volute. The wind duct plate and the upper volute are integrated foaming shaped pieces. The heat exchanging assembly is arranged below the wind duct plate and is fixed to the shell body. The water receiving plate is arranged under the heat exchanging assembly and clamped on the wind duct plate. The upper volute is snapped on the lower volute and covers the fans. The upper volute, the lower volute, the wind duct plate and the water receiving plate define an enclosed wind duct. A wind outlet of the wind duct is opened towards to the heat exchanging assembly. According to the duct type air conditioner, problems of multiple spare parts and high manufacturing cost in the prior art are solved.

[0006] EP 3 081 867 A1 relates to a heat exchanger unit comprising a casing defining a duct to be flown through by a fluid, a fan disposed in the casing and configured to induce a flow of the fluid through the duct in a flow direction, a heat exchanger being V-shaped in side view with an apex at one end and an opening at the opposite end. The heat exchanger is disposed in the duct with the opening directed towards the flow direction, wherein a line passing the apex of the V-shaped heat exchanger in the side view extends horizontally, wherein the fan is disposed downstream of the heat exchanger in the flow direction.SUMMARY

[0007] The invention is set out in the appended set of claims. In one aspect, the present invention provides a ducted air conditioner which is defined by claim 1.

[0008] In another aspect, the present invention provides an assembly method of a ducted air conditioner which is defined by claim 4.

[0009] Further advantageous embodiments of the present invention are indicated in the dependent claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to describe technical solutions in the embodiments of the present invention more clearly, accompanying drawings to be used in the description of embodiments or the prior art will be introduced briefly. Obviously, the accompanying drawings to be described below are merely some embodiments of the invention, and a person of ordinary skill in the art may obtain other drawings according to those drawings without paying any creative effort. FIG. 1 is a schematic diagram showing an assembly structure of a ducted air conditioner proposed in an embodiment of the present invention; FIG. 2 is an exploded view of a structure of the ducted air conditioner in the embodiment in FIG. 1; FIG. 3 is a side sectional view of the embodiment in FIG. 1; FIG. 4 is a schematic diagram showing a structure of an installation of a heat-retaining and drainage device; and FIG. 5 is a schematic diagram showing a structure of an installation of a heat exchange system. REFERENCE SIGNS

[0011] 1, housing; 2, heat-retaining and drainage device; 3, heat exchange system; 4, fan system; 5, electrical control box; 6, hanger; 11, base plate; 12, first side plate; 13, second side plate; 14, front panel; 15, lower cover plate; 16, beam; 17, mounting plate; 18, motor mounting frame; 101, first cavity; 102, second cavity; 103, box body; 121, piping cover plate; 122, drainage assembly cover plate; 123, water outlet pipe hole; 124, piping mounting hole; 125, drainage assembly mounting hole; 126, pressing piece; 171, bayonet; 21, upper heat-retaining member; 22, drain pan; 211, first inner side plate; 212, first base plate; 221, second inner side plate; 222, second base plate; 223, base bracket; 224, water outlet pipe; 23, notch; 31, fixing member at end portion of housing; 32, first fixing member of heat exchanger; 33, second fixing member of heat exchanger; 34, heat exchanger; 35, piping; 311, slideway; 312, buckle; 321, slide rail; 322, clamping groove; 41, motor; 42, volute; 421, upper volute; 422, lower volute; 423, fastener structure; 51, metal electric box; 511, front side plate. DETAILED DESCRIPTION

[0012] Technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, Obviously, the described embodiments are merely some but not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without paying any creative effort shall be included in the protection scope of the present invention as long as falling within the scope of the claims.

[0013] In the description of the present invention, it will be understood that, orientations or positional relationships indicated by the terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on orientations or positional relationships shown in the accompanying drawings. These terms are merely to facilitate and simplify the description of the present invention, but not to indicate or imply that the referred devices or elements each must have a particular orientation, or must be constructed or operated in a particular orientation. Therefore, these terms should not be construed as limitations on the present invention.

[0014] The terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating a number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, the term "a plurality of" means two or more unless otherwise specified.

[0015] A ducted air conditioner in the present invention performs a refrigeration cycle of the ducted air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and a process of supplying refrigerant to air that has been conditioned and heat-exchanged.

[0016] The compressor compresses refrigerant gas in a state of high temperature and high pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to a surrounding environment through the condensation process.

[0017] The expansion valve expands the liquid-phase refrigerant that is condensed in the condenser and is in the state of high temperature and high pressure into a liquid-phase refrigerant that is in a state of low pressure. The evaporator evaporates the refrigerant expanded in the expansion valve, and makes refrigerant gas in a state of low temperature and low pressure return to the compressor. The evaporator may achieve a refrigeration effect through heat exchange between latent heat of evaporation of the refrigerant and a material to be cooled. Throughout the refrigeration cycle, the ducted air conditioner may regulate a temperature of an indoor space.

[0018] An outdoor unit of an air conditioning system refers to a part of the refrigeration cycle which includes the compressor and an outdoor heat exchanger. An indoor unit (e.g., the ducted air conditioner) of the air conditioning system includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

[0019] The indoor heat exchanger and the outdoor heat exchanger are used as the condensers or the evaporators. In a case where the indoor heat exchanger is used as the condenser, the ducted air conditioner is used as a heater in a heating mode. In a case where the indoor heat exchanger is used as the evaporator, the ducted air conditioner is used as a cooler in a refrigeration mode.

[0020] In an embodiment of the present invention, functional components of the ducted air conditioner include a fan system and a heat exchange system, which are arranged in separate spaces. The fan system makes air flow having a pressure enter a space where the heat exchange system is located, and after being heat exchanged by the heat exchange system, the air flow enters the air duct. Then, the air flow having the pressure enters each room through the air duct for refrigeration or heating.

[0021] Referring to FIGS. 1 and 2, the ducted air conditioner of the present invention includes a housing 1, a heat-retaining and drainage device 2, a heat exchange system 3 and a fan system 4.

[0022] The housing 1 includes a box body 103 with an opening facing downward and a lower cover plate 15. The lower cover plate 15 matches the opening of the box body 103, and is connected with the opening of the box body 103.

[0023] The box body 103 includes a first side plate 12, a second side plate 13, a base plate 11 and a front panel 14. The second side plate 13 and the first side plate 12 constitute a left side wall and a right side wall of the housing 1 respectively. The base plate 11 constitutes an upper wall of the housing 1. The front panel 14 constitutes a front wall of the housing 1.

[0024] Referring to FIGS. 2, 3 and 4, the heat-retaining and drainage device 2 includes an upper heat-retaining member 21 and a drain pan 22. The upper heat-retaining member 21 is used for heat isolation of the housing 1. The drain pan 22 is used for receiving condensed water when the ducted air conditioner is used for refrigeration, and may also have a function of heat isolation.

[0025] The upper heat-retaining member 21 is connected with the drain pan 22 to separate a cavity of the housing 1, so that the housing includes a first cavity 101 and a second cavity 102 that are separate. The heat exchange system 3 is fixedly installed in the second cavity 102, and is between the upper heat-retaining member 21 and the drain pan 22. A fan system 4 is fixedly installed in the first cavity 101.

[0026] The heat-retaining and drainage device 2 has functions of retaining heat, receiving condensed water, and isolating the fan system 4 and the heat exchange system 3, which saves a partition plate in traditional components, reduces the components of the ducted air conditioner and saves the cost. Moreover, the number of screws used for connection is reduced, which improves the assembly efficiency.

[0027] Referring to FIGS. 1, 2 and 4, the ducted air conditioner further includes an electrical control box 5, which is fixedly installed at an end of the first cavity 101 and includes a metal electric box 51. The metal electric box 51 is connected with the first side plate 12, so as to jointly form a side wall at an end portion of the housing 1. The metal electric box 51 is connected with the lower cover plate 15, so as to jointly form a lower wall of the housing 1.

[0028] Referring to FIGS. 2 and 4, the metal electric box 51 includes a front side plate 511. A distance between the front side plate 511 and the front panel 14 matches a dimension of the heat-retaining and drainage device 2. That is, the heat-retaining and drainage device 2 is installed in the cavity of the housing 1, is located between the metal electric box 51 and the front panel 14, and is connected with the front side plate 511.

[0029] The metal electric box 51 and the front panel 14 play a role of positioning and restricting the heat-retaining and drainage device 2 during installation. As a result, the heat-retaining and drainage device 2 may be fixedly installed without using screws. Thus, the number of screws used for connection is reduced.

[0030] In some embodiments of the present invention, a notch 23 whose dimension is less than that of the front side plate 511 is provided at a portion where the heat-retaining and drainage device 2 is connected with the metal electric box 51, so as to save materials and reduce the material cost.

[0031] Referring to FIGS. 2 and 3, the upper heat-retaining member 21 includes a first inner side plate 211 and a first base plate 212. The first inner side plate 211 is vertically connected with a side of the first base plate 212.

[0032] The drain pan 22 includes a second inner plate 221 and a second base plate 222. The second inner plate 221 is vertically connected with a side of the second base plate 222. The first inner side plate 211 is connected with the second inner side plate 221, which divides the cavity of the housing 1 into the separate first cavity 101 and second cavity 102.

[0033] In some embodiments of the present invention, a lower end of the first inner side plate 211 is connected with an upper end of the second inner side plate 221 in an abutting manner, rather than being fixedly connected with each other through screws, which reduces the number of screws used, reduces the labor consumption and a weight of the ducted air conditioner, and reduces the cost and facilitates a transportation of the ducted air conditioner.

[0034] For structures and a connection method of the first inner side plate 211 and the second inner side plate 221, descriptions will be made in detail below.

[0035] Referring to FIGS. 2 and 5, the heat exchange system 3 is installed in the second cavity 102 through a connection between a slideway 311 and a slide rail 321. The heat exchange system 3 includes a heat exchanger 34. The slideway 311 is provided on an inner side of the second side plate 13. The slide rail 321 that is connected with and matches the slideway 311 is provided on an end of the heat exchanger 34. The slideway 311 is connected with the slide rail 321. The connection between the slideway 311 and the slide rail 321 will be described in detail below.

[0036] A first positioning device is provided on the first side plate 12. A second positioning device that is connected with and matches the first positioning device is provided on another end of the heat exchanger 34. The first positioning device is connected with the second positioning device to accelerate the positioning of the heat exchanger 34.

[0037] In some embodiments of the present invention, the first positioning device includes a piping mounting hole 124. The second positioning device includes a piping 35 and a second fixing member 33 of the heat exchanger. The piping 35 is installed in the piping mounting hole 124. The second fixing member 33 of the heat exchanger is connected with the front panel 14.

[0038] Finally, the heat exchanger 34 and the box body 103 are fixedly connected together through a fixed connection between the second fixing member 33 of the heat exchanger and the front panel 14, and a fixed connection between the slideway 311 and the slide rail 321. The piping 35 and the piping mounting hole 124 also have a function of positioning, which simplifies a design structure and facilitates the installation, reduces the cost and improves the installation efficiency.

[0039] Referring to FIGS. 2, 3 and 4, the box body 103 further includes a fan installation device, which includes a motor mounting frame 18. The motor mounting frame 18 is fixedly connected with the base plate 11.

[0040] The fan system 4 includes a motor 41 and a volute 42. The motor 41 is fixedly installed on the motor mounting frame 18. The volute 42 is fixedly connected with the box body 103 in a clamping manner.

[0041] In some embodiments of the present invention, the box body 103 further includes a mounting plate 17, which is fixedly connected with the base plate 11 and includes a groove. The groove includes a groove opening and a groove bottom. The groove opening faces the base plate. A plurality of bayonets 171 are provided on the groove bottom.

[0042] In some embodiments of the present invention, the mounting plate 17 and the base plate 11 are fixedly connected in a riveting manner, so that a connection operation of the mounting plate 17 and the base plate 11 may be centralized in batches, thereby improving an operation efficiency.

[0043] A fastener connected with and matching each bayonet 171 is provided at a position corresponding to each bayonet 171 on the volute 42. Each fastener matches a corresponding bayonet 171, so that the volute 42 is fixedly connected with the mounting plate 17, and thus connected with the base plate 11.

[0044] Correspondingly, the motor mounting frame 18 is fixedly connected with the mounting plate 17 and the base plate 11. Description will be made in detail below.

[0045] Of course, the volute 42 may be directly connected with the base plate 11 in the clamping manner. That is, the bayonets are provided on the base plate 11. Each fastener is connected with a corresponding bayonet in the clamping manner. By providing the mounting plate 17, an appearance of the ducted air conditioner is more aesthetically pleasing.

[0046] Referring to FIGS. 1 to 4, based on the above structure, an assembly method of the ducted air conditioner of the present invention is as follows.

[0047] First, the box body 103 is placed with the opening facing upward, and the metal electric box 51 is fixedly installed on an end of a rear of the box body 103 and is fixedly connected with the base plate 11 and the first side plate 12.

[0048] Then, the upper heat-retaining member 21 is arranged between the front side plate 511 of the metal electric box 51 and the front panel 14. Due to a positioning of the metal electric box 51 and the front panel 14, the installation of the upper heat-retaining member 21 is convenient and fast.

[0049] Next, the heat exchanger 34 is fixedly installed in the box body 103 and above the upper heat-retaining member 21.

[0050] Furthermore, the drain pan 22 is installed above the heat exchanger 34 with the opening facing downward.

[0051] An installation of the fan system 4 may be done at the end of the installation of the above components. Alternatively, the fan system 4 may be installed during the installation of the above components. Since the fan system is not connected with the above components, an installation sequence of the fan system 4 is not required, which reduces requirements for an assembly sequence.

[0052] In a case where the installation of the fan system 4 is done at the end of the installation of the above components, finally, after the installation of the fan system 4 is accomplished, the lower cover plate 15 is installed above the fan system 4 and the drain pan 22, and is fixedly connected with the box body 103, and the drain pan 22 is restricted below the lower cover plate 15. In this way, the assembly of the ducted air conditioner is accomplished.

[0053] In some embodiments of the present invention, the lower cover plate 15 and the motor mounting frame 18 are fixedly connected through screws, so as to increase a stability of the motor mounting frame 18.

[0054] Of course, the installation of the metal electric box 51 may be after the installation of the heat-retaining and drainage device 2. In this way, the heat-retaining and drainage device 2 may assist in positioning the metal electric box 51 and restricting the position of the metal electric box 51. As a result, an installation efficiency of the metal electric box 51 is increased.

[0055] The preferred implementation of a structure and connection of each component will be described in detail below.

[0056] Referring to FIGS. 1 and 2, a structure and connection of the housing 1 are as follows. The second side plate 13 and the base plate 11 are manufactured in an integral form by a bending manner, and the second side plate 13 is perpendicular to the base plate 11.

[0057] The first side plate 12 is located at an end of the base plate 11 opposite to the second side plate 13, and is connected with the base plate 11 in the clamping manner. When it is necessary, the first side plate 12 is fixedly connected with the base plate 11 with the assist of screws.

[0058] The front panel 14 is located on a front side of the housing 1 and constitutes the front wall of the housing 1, and is fixedly connected with the first side plate 12, the second side plate 13 and the base plate 11 in the clamping manner.

[0059] In addition, the connection among the metal electric box 51, the base plate 11 and the first side plate 12 is achieved in the clamping manner. When it is necessary, the connection is assisted through a small number of screws.

[0060] In some embodiments of the present invention, for a stability of the box body 103, the box body 103 further includes a beam 16, and two ends of the beam 16 are fixedly connected with the second side plate 13 and the metal electric box 51.

[0061] In some embodiments of the present invention, two ends of the beam 16 are connected with the second side plate 13 and the metal electric box 51 in the clamping manner. When it is necessary, the connection is assisted through a small number of screws. By reducing the number of screws used, the assembly efficiency is improved and the cost is saved.

[0062] Similarly, the lower cover plate 15 is also fixedly connected with the box body 103 in the clamping manner, and the connection therebetween is assisted through a small number of screws. By reducing the number of screws used, the labor consumption is reduced, the cost is reduced, and the assembly efficiency is improved.

[0063] The box body 103 of the ducted air conditioner of the present invention is quickly positioned and connected through the connection of a bayonet and a hook, and is fixed through a small number of rivets or screws, which improves a positioning speed, simplifies the installation, reduces the number of screws used, improves the assembly efficiency, and reduces the labor consumption and cost. Moreover, a connection strength of the box body 103 is enhanced through a cooperation of a pulling force of the hook and a transverse shear force of the rivet or screw, so that a reliability of the box body 103 is improved.

[0064] Referring to FIGS. 2, 3 and 4, a connection between the first inner side plate 211 and the second inner side plate 221 is as follows. A step is provided on an outer side of a lower end of the first inner side plate 211. An upper end of the second inner side plate 221 abuts against the step.

[0065] The first inner side plate 211 is provided with at least one first opening hole with a lower opening. The second inner side plate 221 is provided with a second opening hole with an upper opening at a position corresponding to each first opening hole. The first opening hole is connected with the corresponding second opening hole to form a through hole. The fan system 4 is connected with each through hole through the air duct and in turn connected with the second cavity 102.

[0066] In some embodiments of the present invention, the upper heat-retaining member 21 further includes at least one side plate, which is located at a same side of the first side plate 12 and connected with the first side plate 12. A bendable pressing piece 126 is provided on the first side plate 12. In a case where the installation of the upper heat-retaining member 21 is accomplished, the pressing piece 126 is bent inward and is located at a lower side of an end of the side plate of the upper heat-retaining member 21, and is connected with the side plate of the upper heat-retaining member 21, Thereby restricting the position of the upper heat-retaining member 21.

[0067] Referring to FIGS. 1, 2 and 4, the drain pan 22 includes a water outlet pipe 224. A water outlet pipe hole 123 is provided at a position corresponding to the water outlet pipe 224 at a lower end of the first side plate 12, and the water outlet pipe hole 123 matches the water outlet pipe 224. The water outlet pipe hole 123 is a hole with a lower opening.

[0068] During assembly, an opening of the drain pan 22 faces downward and abuts the upper heat-retaining member 21. The water outlet pipe 224 is installed in the water outlet pipe hole 123. In this way, a positioning and connection of the drain pan 22 is accelerated, and the assembly efficiency is improved.

[0069] In order to ensure that the ducted air conditioner may better insulate heat with the outside in the refrigeration mode, the drain pan is further provided with a base bracket 223 (referring to FIG. 3) made of a heat-retaining material, and the base bracket 223 is fixedly connected with the second base plate 222.

[0070] Referring to FIG. 2, a structure and connection of the heat exchanger 34 and the box body 103 are as follows.

[0071] The heat exchange system 3 further includes a fixing member 31 at the end portion of the housing and a first fixing member 32 of the heat exchanger.

[0072] The fixing member 31 at the end portion of the housing is fixed on an inner side of the second side plate 13, an inner side of the fixing member 31 at the end portion of the housing is provided with a vertical slideway 311, and an end of the slideway 311 is provided with a buckle 312.

[0073] The first fixing member 32 of the heat exchanger and the second fixing member 33 of the heat exchanger are fixed on two ends of the heat exchanger 34. On an outer side of the first fixing member 32 of the heat exchanger, a vertical slide rail 321 that is connected with and matches the slideway 311 is provided, and a clamping groove 322 that is connected with and matches the buckle 312 is provided at a position corresponding to the buckle 312 on the slide rail 321. The slideway 311 is connected with the slide rail 321. The buckle 312 is connected to the clamping groove 322 in a clamping manner. The connection between the slideway 311 and the slide rail 321 enables the heat exchanger 34 to be quickly connected and restricts the position of the heat exchanger 34 in a front direction and a rear direction. A connection of the buckle 312 and the clamping groove 322 limits the position of the heat exchanger 34 in an up direction and a down direction on the basis of the above. In this way, the assembly efficiency is improved.

[0074] The second fixing member 33 of the heat exchanger is fixedly connected with the box body 103. Preferably, the heat exchanger 34 is a V-shaped heat exchanger, and the second fixing member 33 of the heat exchanger is fixedly connected with the front panel 14 through screws.

[0075] The assembly method is as follows. An end of the heat exchanger 34 on which the second fixing member 33 of the heat exchanger is fixed is placed on an end of the box body 103 and is connected with the front panel 14, so that the piping 35 is located in the piping mounting hole 124. Then, the slide rail 321 of the first fixing member 32 of the heat exchanger slides into the slideway 311. In a case where the slide rail 321 slides into a bottom end of the slideway 311, the buckle 312 is clamped with the clamping groove 322.

[0076] The connection between the slideway 311 and the slide rail 321 enables the installation and positioning of the heat exchanger 34 to be accurate and quickly fixed, thereby improving the assembly efficiency. The connection may also be assisted through screws, which may improve the installation quality and reliability.

[0077] In some embodiments of the present invention, the fixing member 31 at the end portion of the housing, the first fixing member 32 of the heat exchanger, and the second fixing member 33 of the heat exchanger are all made of plastic rubber or plastic materials, so that only a small amount of heat on the heat exchanger 34 is transferred to the housing, thereby reducing the heat loss. During refrigeration, generation of condensed water on the housing is reduced, thereby improving the user experience.

[0078] Referring to FIGS. 2 to 4, the motor mounting frame 18 is fixedly connected with the mounting plate 17 and the base plate 11. Corresponding through holes are provided at corresponding positions on the base plate 11 and the motor mounting frame 18, and are connected through screws. Corresponding through holes are provided at corresponding positions on the mounting plate 17 and the motor mounting frame 18, and are connected through screws.

[0079] In some embodiments of the present invention, a positioning column protruding inward is provided on the mounting plate 17. Correspondingly, a positioning hole that matches the positioning column is provided on the motor mounting frame at a position corresponding to the positioning column. The positioning hole is connected with the positioning column to improve an installation efficiency of the motor mounting frame 18.

[0080] The motor mounting frame 18 includes a mounting base matching the motor 41, and the motor 41 is fixed on the mounting base.

[0081] Referring to FIG. 2, the mounting plate 17 is of a flat plate-like structure with a middle protruding portion, and a plurality of bayonets 171 are provided on the protruding portion of the mounting plate 17. The volute 42 includes an upper volute 421 and a lower volute 422. Both ends of the upper volute 421 are provided with a fastener structure 423 that is connected with and matches the bayonets 171 at positions corresponding to each bayonet 171 on the mounting plate 17. The upper volute 421 is clamped to the mounting plate 17. Preferably, the upper volute 421 and the lower volute 422 are also connected in the clamping manner to improve the assembly efficiency.

[0082] Referring to FIGS. 1 and 2, the first side plate 12 further includes a piping cover plate 121 and a drainage assembly cover plate 122, which are used to cover the piping mounting hole 124 on the first side plate 12 and a drainage assembly mounting hole 125 for installing the drainage assembly respectively.

[0083] In some embodiments of the present invention, a connection between the piping cover plate 121 and the first side plate 12 and a connection between the drainage assembly cover plate 122 and the first side plate 12 are achieved through inserting pieces and slots or hooks and hanging ports. The hook and the hanging port are fixedly connected through an elastic heat-retaining material attached to the piping 35, and the hook and the hanging port are fixedly connected through a weight of the drainage assembly on the drainage assembly cover plate 122. Then the connection is assisted through a small number of screws, so as to reduce the number of screws used, improve the assembly efficiency and reduce the cost.

[0084] Referring to FIGS. 1, 2 and 4, the ducted air conditioner further includes a plurality of hangers 6. The hanger 6 includes a fixing plate, and an outer side thereof is provided with a plurality of hanging hooks. The box body 103 is provided with a plurality of hanging ports matching the hanging hooks. The hanging hooks are connected with the hanging ports in a one-to-one correspondence manner, and are fixed through the assist of screws. In this way, the assembly efficiency is improved and the cost is reduced.

Claims

1. A ducted air conditioner, wherein the ducted air conditioner comprises: a housing (1) for forming a cavity; a heat-retaining and drainage device (2), including an upper heat-retaining member (21) located in the housing (1) and used for insulating heat; a drain pan (22) used for receiving condensed water and located in the housing (1) and below the upper heat-retaining member (21); the drain pan (22) being connected with the upper heat-retaining member (21) to separate the cavity of the housing (1), so that the housing (1) includes a first cavity (101) and a second cavity (102) that are separate; a fan system (4) fixedly installed in the first cavity (101); a heat exchange system (3) fixedly installed in the second cavity (102) and located between the upper heat-retaining member (21) and the drain pan (22); and an electrical control box (5) located at an end of the first cavity (101) and including a metal electric box (51); the metal electric box (51) constituting a portion of side wall and a portion of lower wall of the housing (1); wherein the housing (1) includes a box body (103) with an opening facing downward and a lower cover plate (15) connected with the box body (103); the box body (103) includes a first side plate (12); the first side plate (12) is connected with the metal electric box (51) to jointly form a side wall at an end portion of the housing (1); the lower cover plate (15) is connected with the metal electric box (51) to jointly form the lower wall of the housing (1); the heat-retaining and drainage device (2) are located at a front side of the electrical control box (5); the upper heat-retaining member (21) includes a first inner side plate (211) and a first base plate (212); the first inner side plate (211) is vertically connected with a side of the first base plate (212); the drain pan (22) includes a second inner side plate (221) and a second base plate (222); the second inner side plate (221) is vertically connected with a side of the second base plate (222); the first inner side plate (211) is connected with the second inner side plate (221) to divide the cavity of the housing (1) into the first cavity (101) and the second cavity (102); the first inner side plate (211) and the second inner side plate (221) are connected with the electrical control box (5); wherein the box body (103) further includes a base plate (11), and the base plate (11) constitutes an upper wall of the housing (1); the first base plate (212) is located on an inner side of the base plate (11), and is connected with the base plate (11); the second base plate (222) is located on an inner side of the lower cover plate (15) and is connected with the lower cover plate (15); and the box body (103) further includes a second side plate (13), and the second side plate (13) constitutes a side wall at an end portion of the housing (1); a vertical slideway (311) is provided on an inner side of the second side plate (13); an end of the slideway (311) is provided with a buckle (312); a first positioning device is provided on the box body (103); the heat exchange system (3) includes a heat exchanger (34); two ends of the heat exchanger (34) are provided with a slide rail (321) connected with and matching the slideway (311), and a second positioning device connected with and matching the first positioning device; the first positioning device is connected with the second positioning device; the slide rail (321) is connected with the slideway (311); a clamping groove (322) that is connected with and matches the buckle (312) is provided at a position corresponding to the buckle (312) on the slide rail (321); and the buckle (312) is connected to the clamping groove (322) in a clamping manner.

2. The ducted air conditioner according to claim 1, characterized in that, the first positioning device includes a piping mounting hole (124) provided on the first side plate (12); the box body (103) further includes a front panel (14), and the front panel (14) constitutes a front wall of the housing (1); the second positioning device includes a piping (35) and a second fixing member (33) of the heat exchanger; the piping (35) is mounted in the piping mounting hole (124); the second fixing member (33) of the heat exchanger is connected with the front panel (14).

3. The ducted air conditioner according to claim 1 or 2, characterized in that, the box body (103) further includes a fan installation device, and the fan installation device includes a motor mounting frame (18); the motor mounting frame (18) is fixedly connected with the base plate (11); the fan system (4) includes a motor (41) and a volute (42); the motor (41) is fixedly installed on the motor mounting frame (18); the volute (42) and the box body (103) are fixedly connected in a clamping manner.

4. An assembly method of a ducted air conditioner, wherein the ducted air conditioner includes a housing (1), a heat-retaining and drainage device (2), a fan system (4) and a heat exchange system (3); the housing (1) includes a box body (103) with an opening facing downward, and the box body (103) includes a base plate (11); the heat-retaining and drainage device (2) includes an upper heat-retaining member (21) and a drain pan (22); the upper heat-retaining member (21) is connected with the drain pan (22); the method comprises: placing the box body (103) with its opening facing upward; installing the upper heat-retaining member (21) on the base plate (11); installing the heat exchange system (3) above the upper heat-retaining member (21); and installing the drain pan (22) above the heat exchange system (3), and the drain pan (22) connecting with the upper heat-retaining member (21) to divide a cavity of the housing (1) into a first cavity (101) and a second cavity (102); the heat exchange system (3) is arranged in the second cavity (102); the fan system (4) is fixedly installed in the first cavity (101); wherein the ducted air conditioner further includes an electrical control box (5), and the electrical control box (5) includes a metal electric box (51); the box body (103) further includes a first side plate (12) and a front panel (14); the method further comprises: fixedly installing the electrical control box (5) on an end of the first cavity (101); fixedly connecting the metal electric box (51) with the first side plate (12); and installing the heat-retaining and drainage device (2) between the metal electric box (51) and the front panel (14); wherein the box body (103) further includes a second side plate (13), and the second side plate (13) constitutes a side wall at an end portion of the housing (1); a vertical slideway (311) is provided on an inner side of the second side plate (13); an end of the slideway (311) is provided with a buckle (312); a first positioning device is provided on the box body (103); the heat exchange system (3) includes a heat exchanger (34); two ends of the heat exchanger (34) are provided with a slide rail (321) connected with and matching the slideway (311), and a second positioning device connected with and matching the first positioning device; a clamping groove (322) that is connected with and matches the buckle (312) is provided at a position corresponding to the buckle (312) on the slide rail (321); and the method further comprises: connecting the first positioning device with the second positioning device; sliding the slide rail (321) into a bottom end of the slideway (311), clamping the buckle (312) with the clamping groove (322).