Electric heater mounting structure and air conditioner

Abstract

The utility model provides an electric heater mounting structure and an air conditioner, and the electric heater mounting structure comprises a power supply bracket which comprises a bracket main body of which the two ends are respectively arranged in a unit shell of an air conditioning unit; the at least two mounting sockets are arranged on the bracket main body at intervals; the power line is connected into the power supply bracket from one end of the bracket main body and is communicated with each mounting socket through a parallel circuit arranged in the bracket main body; and the at least two electric heater modules are detachably mounted on the mounting sockets respectively. According to the electric heater mounting structure, the electric heater modules are respectively and quickly assembled and disassembled on the mounting sockets of the power supply bracket in the unit shell, and when a certain electric heater module is damaged, only the damaged electric heater module needs to be independently and quickly disassembled from the corresponding mounting socket through the volute air port of the fan mounting plate and returns to the original path to be replaced; as the electric heater module is shorter than an integral electric heater, the electric heater module is easy to disassemble and assemble from the fan side, adjacent to the evaporator, of the unit shell.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an electric heater installation structure and an air conditioner. Background Technology

[0002] Existing heat pump air conditioners have limited heating capacity through the compressor in heating mode. To improve heating capacity and accelerate indoor temperature rise, major air conditioner manufacturers commonly use electric heaters to enhance heating performance. The location of the electric heater on the indoor unit significantly impacts electrical safety and after-sales disassembly / removal. For example, to facilitate disassembly, some ducted air conditioners install the electric heater on the evaporator bracket at the air outlet. When the unit produces excessive condensate during cooling, it cannot drain quickly and accumulates in the drip tray, potentially causing the unit to blow water. The splashed water can then contact and corrode the electric heater mounted on the evaporator bracket above the drip tray, affecting its safety and even posing a risk of short circuit and fire.

[0003] To avoid these problems, some air conditioner manufacturers now install electric heaters inside the unit. For example, some types of ducted air conditioners place the electric heater in a sealed space between the fan mounting plate and the evaporator bracket. Since this space is higher and farther from the drip tray, and most of its components are non-flammable, it is relatively safer and more reliable.

[0004] However, ducted air conditioners are generally installed in a concealed manner or suspended from the ceiling. During installation, the top cover of the ducted air conditioner is close to or even directly attached to the ceiling, which means that there is not enough space above the ducted air conditioner to remove the top cover. In addition, the top cover of the ducted air conditioner usually occupies the upper part of the unit and serves as the mounting base for other components. Removing the top cover may cause the entire unit structure to collapse. If the electric heater is removed from the side panels of the unit, it is also difficult to remove because traditional ducted air conditioners use an integrated long strip electric heater that is hidden inside the duct. The obstruction of the side evaporator also makes it difficult to remove the long strip electric heater. Utility Model Content

[0005] This utility model proposes an electric heater installation structure and an air conditioner using it, in order to solve the technical problem that the electric heater of existing duct air conditioners is difficult to disassemble and assemble due to obstruction by the top cover plate and the side evaporator.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides an electric heater mounting structure, including:

[0008] The power supply bracket includes: a bracket body, the two ends of which are respectively installed inside the housing of the air conditioning unit; at least two mounting sockets, which are spaced apart on the bracket body; and a power cord, which is connected to the power supply bracket from one end of the bracket body and is connected to each mounting socket through a parallel circuit located inside the bracket body.

[0009] At least two electric heater modules are detachably mounted on their respective mounting sockets.

[0010] Furthermore, the electric heater mounting structure also includes:

[0011] A pair of heat exchanger side plates are installed at intervals inside the unit casing. The heat exchanger of the air conditioning unit is connected between the pair of heat exchanger side plates. The two ends of the bracket body are respectively connected between the pair of heat exchanger side plates and are spaced apart from the heat exchanger.

[0012] The fan mounting plate is located inside the unit casing and divides the inside of the unit casing into an evaporation side that accommodates the heat exchanger, power supply bracket, and electric heater module, and a fan side for mounting the fan module. The fan mounting plate is provided with at least two volute air vents that match the shape and position of the electric heater module. The volute air vents are used to align and cooperate with the side air vents of the fan module and to make way for the electric heater module to enter and exit the evaporation side.

[0013] Preferably, a pair of mounting supports are provided at each end of the bracket body, and the power cord is connected to the power supply bracket from the mounting support at one end of the bracket body.

[0014] Preferably, the support body is elongated, and the mounting bracket includes two mounting sides connected in an L-shape. One of the mounting sides of the mounting bracket is vertically connected to the support body, and the other side of the mounting bracket is provided with at least one mounting hole. The edge of the heat exchanger side plate is provided with a mounting flange, and the mounting flange is provided with a connection hole that matches the mounting hole. The two ends of the mounting bracket are respectively connected to a pair of heat exchanger side plates by connecting parts passing through the corresponding connection hole and mounting hole.

[0015] Preferably, the mounting socket is provided with a plug interface connected to the parallel circuit, and the electric heater module is provided with a plug that matches the plug interface. The electric heater module is detachably plugged into the corresponding mounting socket through the plug interface and the plug connector.

[0016] Furthermore, the electric heater mounting structure also includes:

[0017] The control board is installed inside the unit housing and has power supply terminals for electrical connection with the power cord.

[0018] Furthermore, the electric heater mounting structure also includes:

[0019] The fan shaft is rotatably mounted on the fan side and parallel to the fan mounting plate;

[0020] The drive unit, located on the fan side and mounted on the fan mounting plate, is used to drive the fan shaft to rotate;

[0021] The fan module is a centrifugal fan, including: a centrifugal fan blade, which is installed on the drive shaft and matched with the volute air outlet; a fan volute, which is sleeved on the outside of the centrifugal fan blade and installed on the fan mounting plate at the corresponding volute air outlet, and the fan volute has a side air outlet facing the volute air outlet.

[0022] Preferably, the heat exchanger is an evaporator.

[0023] Preferably, the electric heater module is a PTC electric heater.

[0024] This utility model application also provides an air conditioner, including the above-described electric heater mounting structure.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The electric heater installation structure provided by this utility model allows for the quick and easy installation of electric heater modules into various mounting sockets on the power supply bracket inside the unit housing. When a certain electric heater module of the ducted air conditioner is damaged, the damaged electric heater module can be quickly removed from the corresponding mounting socket through the volute air outlet of the fan mounting plate and returned along the same route for quick replacement. Since the electric heater module is significantly shorter than the integral long strip electric heater, it is easy to remove and install from the fan side adjacent to the evaporator of the ducted air conditioner, which facilitates after-sales maintenance of the ducted air conditioner. At the same time, due to the modular design of the electric heater, after removing the damaged electric heater module, the remaining normal electric heater module can still continue to perform heating work without being affected, ensuring that the unit continues to be in heating mode without shutdown, thus improving the fault tolerance of the electric heater and the ducted air conditioner. Attached Figure Description

[0027] To more clearly illustrate the technical solution proposed by this utility model, the present utility model will be described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the embodiments and accompanying drawings described in the following detailed description are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0028] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the electric heater mounting structure provided by this utility model;

[0029] Figure 2 for Figure 1 A three-dimensional structural diagram of the power supply bracket for the electric heater mounting structure in the diagram;

[0030] Figure 3 for Figure 1 A three-dimensional structural diagram of the electric heater module in the electric heater mounting structure;

[0031] Figure 4 for Figure 1 A three-dimensional structural diagram of the electric heater installation structure after the fan module has been removed;

[0032] Figure 5 for Figure 1 A partial exploded three-dimensional structural diagram of the electric heater installation structure.

[0033] The main markings in the attached figures are as follows:

[0034] 1. Power supply bracket; 11. Bracket body; 111. Mounting socket; 1111. Plug interface; 12. Power cord; 13. Mounting support; 131. Mounting side; 1311. Mounting hole;

[0035] 2. Electric heater module; 21. Connector; 22. Gap;

[0036] 3. Unit casing; 31. Evaporator side; 311. Piping cavity; 32. Fan side; 33. Casing bottom cover; 331. Fan mounting port; 34. Casing side cover; 341. Piping clearance hole; 342. Reserved knockout hole; 35. Casing connecting plate;

[0037] 4. Heat exchanger side plate; 41. Installation folded edge;

[0038] 5. Heat exchanger; 51. Refrigerant piping;

[0039] 6. Fan mounting plate; 61. Volute air outlet;

[0040] 7. Fan module; 71. Fan shaft; 72. Drive unit; 73. Centrifugal fan blade; 74. Fan volute; 741. Side air outlet; 75. Motor bracket;

[0041] 8. Bottom cover sealing door;

[0042] 9. Electrical box. Detailed Implementation

[0043] Please refer to the following: Figure 1-5 The electric heater mounting structure provided by this utility model includes:

[0044] The power supply bracket 1 includes: a bracket body 11, the two ends of which are respectively installed inside the unit casing 3 of the air conditioning unit; at least two mounting sockets 111, which are spaced apart on the bracket body 11; a power cord 12, which is connected to the power supply bracket 1 from one end of the bracket body 11 and is connected to each mounting socket 111 through a parallel circuit provided inside the bracket body 11; and at least two electric heater modules 2, which are detachably installed on each mounting socket 111.

[0045] The electric heater installation structure provided by this utility model divides the integral long strip electric heater into several shorter electric heater modules 2, and adds a power supply bracket 1 inside the unit housing 3 of the air duct machine. Each electric heater module 2 is correspondingly matched with each mounting socket 111 that is spaced apart on the bracket body 11 of the power supply bracket 1, and the electric heater module 2 installed on each mounting socket 111 is connected to the power line 12 at one end of the bracket body 11 by a parallel circuit located inside the bracket body 11, so as to realize the electrical connection between the electric heater module 2 and the control main board.

[0046] Therefore, the electric heater installation structure provided by this utility model enables the electric heater modules 2 to be quickly and easily installed in the power supply bracket 111 inside the unit housing 3. When a certain electric heater module 2 of the ducted air conditioner is damaged, the damaged electric heater module 2 can be quickly disassembled from the corresponding installation socket 111 through the volute air outlet 61 on the fan mounting plate 6 and quickly reassembled along the original path. Since the electric heater module 2 is much shorter than the integral long strip electric heater, the electric heater module 2 can be easily disassembled from the fan side 32 adjacent to the heat exchanger 5 of the unit housing 3 of the ducted air conditioner, which facilitates the after-sales maintenance of the ducted air conditioner.

[0047] Meanwhile, due to the modular design of the electric heater, after the damaged electric heater module 2 section is removed, the remaining normal electric heater module 2 section can continue to perform heating work without being affected, ensuring that the unit continues to be in heating mode without shutdown, thus improving the fault tolerance of the electric heater and duct unit.

[0048] Please refer to the following: Figure 1-5 In this embodiment, the electric heater mounting structure further includes:

[0049] A pair of heat exchanger side plates 4 are installed at intervals inside the unit casing 3. The heat exchanger 5 of the air conditioning unit is connected between the pair of heat exchanger side plates 4. The two ends of the bracket body 11 are respectively connected between the pair of heat exchanger side plates 4 and are spaced apart from the heat exchanger 5.

[0050] The fan mounting plate 6 is located inside the unit housing 3 and divides the inside of the unit housing 3 into an evaporation side 31 (evaporation chamber) for accommodating the heat exchanger 5, power supply bracket 1, and electric heater module 2, and a fan side 32 (fan chamber) for mounting the fan module 7. At least two volute air vents 61 that match the shape and position of the electric heater module 2 are provided on the fan mounting plate 6 at intervals. The volute air vents 61 are used to align with the side air vents 741 of the fan module 7 and to provide clearance for the electric heater module 2 to enter and exit the evaporation side 31.

[0051] Please refer to the following: Figure 1-5 In this embodiment, the distance between the support body 11 of the power supply bracket 1 and the heat exchanger 5 is preferably greater than 10mm. At the same time, after the electric heater 2 is installed, the size of the electric heater 2 in space cannot exceed the space required for the installation of the heat exchanger 5.

[0052] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the unit casing 3 includes:

[0053] The housing includes a bottom cover plate 33; a pair of housing side covers 34, which are respectively connected to the two ends of the bottom cover plate 33; and a top cover plate (not shown in the figure), which is connected to the top of the bottom cover plate 33 and the pair of housing side covers 34.

[0054] The two ends of the fan mounting plate 6 are respectively connected to a pair of housing side cover plates 34, and the bottom end of the fan mounting plate 6 is connected to the housing bottom cover plate 33, and the top end of the fan mounting plate 6 is connected to the housing top cover plate, so that the unit housing 3 between the fan mounting plate 6 and the housing bottom cover plate 33, the housing top cover plate and the pair of housing side cover plates 34 is divided into the evaporation side 31 and the fan side 32 located on both sides of the fan mounting plate 6.

[0055] One of the shell side cover plates 34 serves as one of the heat exchanger side plates 4 and is connected to the mounting support 13 and one end of the heat exchanger 5. Another shell side cover plate 34 is connected to a shell connecting plate 35 that is parallel to the heat exchanger 5 and the fan mounting plate 6 and perpendicular to the shell bottom cover plate 33. The bottom end of the shell connecting plate 35 is connected to the shell bottom cover plate 33. The other heat exchanger side plate 4 is perpendicular to the shell bottom cover plate 33 and the shell connecting plate 35 and parallel to the shell side cover plate 34. The other heat exchanger side plate 4 is connected to the end of the shell connecting plate 35, so that the other heat exchanger side plate 4, the shell bottom cover plate 33, the other shell side cover plate 34 and the shell top cover plate form a pipe cavity 311 located inside the evaporator side 31. The pipe cavity 311 is used to accommodate the refrigerant pipes 51, such as the gas collecting pipe, which connects to the heat exchanger 5. The other heat exchanger side plate 4 is provided with a pipe clearance hole 341 for the refrigerant pipes 51 to enter and exit.

[0056] Please refer to the following: Figure 1-5As a preferred embodiment, the bottom cover plate 33 of the housing is provided with a fan mounting port 331 on the side corresponding to the fan side 32, and a bottom cover sealing door 8 that is movable or detachably connected to the fan mounting port 331 for opening and closing the fan mounting port 331. The size of the fan mounting port 331 matches the shape of the fan module 7 and the electric heater module 2 so that the fan module 7 and the electric heater module 2 can smoothly enter and exit from the bottom (below) of the unit housing 3, realizing quick disassembly and maintenance of the heater module.

[0057] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, one of the shell side cover plates 34 of one of the heat exchanger side plates 4 is provided with a reserved knockout hole 342 on the side corresponding to the fan side 32, so as to be reserved for use as a fresh air inlet for introducing fresh air.

[0058] Please refer to the following: Figure 1-5 In this embodiment, a pair of mounting supports 13 are respectively provided at both ends of the bracket body 11, and the power cord 12 is connected to the power supply bracket 1 from the mounting support 13 at one end of the bracket body 11.

[0059] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the support body 11 extends linearly in a long strip shape, and the mounting support 13 includes two mounting sides 131 connected in an L-shape. One of the mounting sides 131 of the mounting support 13 is vertically connected to the support body 11, and the other side of the mounting support 13 is provided with at least one mounting hole 1311. The edge of the heat exchanger side plate 4 is provided with a mounting flange 41, and the mounting flange 41 is provided with at least one connecting hole (not shown in the figure) that matches the mounting hole 1311. The two ends of the mounting support 13 are respectively connected to a pair of heat exchanger side plates 4 by connecting members passing through the corresponding connecting holes and mounting holes 1311.

[0060] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the two ends of the mounting bracket 13 are fastened to the pair of heat exchanger side plates 4 by bolts, screws and other connecting parts passing through the corresponding connecting holes and mounting holes 1311.

[0061] Please refer to the following: Figure 1-5 In this embodiment, the electric heater module 2 is a PTC electric heater.

[0062] Please refer to the following: Figure 1-5In a preferred embodiment of this invention, the electric heater module 2 is a long strip-shaped PTC electric heater. The gaps 22 between adjacent heating wires are evenly distributed on both sides of the electric heater module 2 to reduce the resistance to the fluid in the air duct (evaporation side 31) and increase the contact area between the fluid and the heating wires, so that the PTC electric heater can quickly and efficiently heat the airflow blown into the evaporation side 31 from the side air outlet 741 of the fan module 7 through the volute air outlet 61 on the fan mounting plate 6.

[0063] Please refer to the following: Figure 1-5 In this embodiment, the mounting socket 111 is provided with a plug interface 1111 connected to the parallel circuit, and the electric heater module 2 is provided with a plug connector 21 that matches the plug interface 1111. The electric heater module 2 is detachably plugged into the corresponding mounting socket 111 through the plug connector 21 and the plug interface 1111.

[0064] Please refer to the following: Figure 1-5 As a preferred embodiment of this invention, the plug 21 and the interface 1111 are connected by a plug-in method to improve the sealing of the plug 21 and the interface 1111 at the plug connection.

[0065] Please refer to the following: Figure 1-5 As a preferred embodiment of this invention, the electric heater mounting structure further includes:

[0066] The control board (not shown in the figure) is installed inside the unit housing 3. The control board has a power supply terminal (not shown in the figure) for electrical connection with the power supply line 12, which is used to supply power to the electric heater module 2.

[0067] Please refer to the following: Figure 1-5 As a preferred embodiment, an electrical box 9 is installed on the side of another heat exchanger side plate 4 corresponding to the fan side 32. The control board is installed in the electrical box 9, connected to the power supply terminal, and the lead wire of the electrical box 9 passes through the corresponding hole of the fan mounting plate 6, extends from the fan side 32 into the evaporator side 31 and is connected to the power line 12.

[0068] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the power cord 12 is a UL1430 / 22AWG cable, and the power supply terminal is a 250 spring clip or an EL terminal.

[0069] Please refer to the following: Figure 1-5 In this embodiment, the electric heater mounting structure further includes:

[0070] The fan shaft 71 is rotatably mounted on the fan side 32 and parallel to the fan mounting plate 6; the drive unit 72 is located on the fan side 32 and mounted on the fan mounting plate 6, and is used to drive the fan shaft 71 to rotate.

[0071] The fan module 7 is a centrifugal fan, including: a centrifugal fan blade 73, which is installed on the drive shaft and matched with the volute air outlet 61; a fan volute 74, which is sleeved on the outside of the centrifugal fan blade 73 and installed on the fan mounting plate 6 at the volute air outlet 61, and the fan volute 74 has a side air outlet 741 facing the volute air outlet 61.

[0072] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the drive unit 72 is a drive motor, and the electric heater mounting structure further includes:

[0073] The motor bracket 75 is located on the fan side 32 and installed on the fan mounting plate 6, and is used to install the drive unit 72; the fan shaft 71 bearing (not shown in the figure) is located on the fan side 32 and installed on the fan unit housing 3, and is used to support the rotation of the fan shaft 71.

[0074] Please refer to the following: Figure 1-5 As a preferred embodiment of this invention, the drive unit 72 is a brushless DC motor.

[0075] Please refer to the following: Figure 1-5 In this embodiment, the air conditioning unit is an indoor air conditioning unit, and the heat exchanger 5 is an evaporator.

[0076] The disassembly and assembly steps of the electric heater mounting structure provided by this utility model are as follows:

[0077] When it is necessary to remove an electric heater module 2 from the inside of the unit housing 3, first, open the bottom cover door 8 on the bottom cover plate 33 of the housing to open the fan installation port 331 on the bottom cover plate 33 of the housing.

[0078] Then, the fan volute 74 and centrifugal fan blade 73 facing the electric heater module 2 to be disassembled are removed from the fan mounting plate 6 and the fan shaft 71 respectively through the fan mounting port 331. The removed fan volute 74 and centrifugal fan blade 73 are then moved out of the unit housing 3 through the fan side 32 through the fan mounting port 331 to expose the volute air outlet 61 on the fan mounting plate 6 facing the electric heater module 2 to be disassembled.

[0079] Finally, the electric heater module 2 to be disassembled is quickly removed from the corresponding mounting socket 111 of the power supply bracket 1 in the evaporator side 31 through the volute air vent 61. Then, the disassembled electric heater module 2 is moved out of the unit housing 3 through the volute air vent 61 and the fan mounting port 331 in sequence through the evaporator side 31 and the fan side 32, thus completing the disassembly of the electric heater module 2.

[0080] When it is necessary to install the electric heater module 2 that has been maintained or replaced inside the unit housing 3, the electric heater module 2 that has been maintained or is to be replaced is moved into the unit housing 3 through the fan mounting port 331 and the volute air outlet 61 in sequence via the fan side 32 and the evaporator side 31, and is quickly plugged into the corresponding mounting socket 111 of the power supply bracket 1 to complete the installation of the electric heater module 2.

[0081] The electric heater installation structure provided by this utility model allows for the removal of the fan volute and centrifugal fan blades from the fan mounting plate inside the unit casing without removing the top cover plate and the side covers of the ducted air conditioner. This is achieved by opening the bottom cover door on the bottom cover plate to open the fan installation port, exposing the volute air outlet of the electric heater module to be disassembled on the fan mounting plate. The small section of the electric heater module is then quickly removed from the corresponding mounting socket of the power supply bracket on the evaporator side through this volute air outlet. The small section of the electric heater module, which has been maintained or is to be replaced, is then quickly inserted into the corresponding mounting socket through the fan installation port and the volute air outlet, sequentially through the fan side and the evaporator side. This enables rapid disassembly and assembly of the electric heater module, facilitating after-sales maintenance of the ducted air conditioner.

[0082] Please refer to the following: Figure 1-5 This utility model application also provides an air conditioner, including the above-mentioned electric heater mounting structure.

[0083] Please refer to the following: Figure 1-5 In this embodiment, the air conditioner is a ducted air conditioner.

[0084] Please refer to the following: Figure 1-5 In other embodiments, the air conditioner may also be a wall-mounted unit or an indoor unit, etc.

[0085] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric heater mounting structure characterized by comprising: include: The power supply bracket (1) includes: a bracket body (11), the two ends of which are respectively installed inside the unit casing (3) of the air conditioning unit; At least two mounting sockets (111) are spaced apart on the bracket body (11); a power cord (12) is connected to the power supply bracket (1) from one end of the bracket body (11) and is connected to each of the mounting sockets (111) through a parallel circuit provided inside the bracket body (11); At least two electric heater modules (2) are detachably mounted on each mounting socket (111).

2. The electric heater mounting structure as set forth in claim 1, wherein The electric heater mounting structure also includes: A pair of heat exchanger side plates (4) are installed at intervals inside the unit housing (3). The heat exchanger (5) of the air conditioning unit is connected between the pair of heat exchanger side plates (4). The two ends of the bracket body (11) are respectively connected between the pair of heat exchanger side plates (4) and are spaced apart from the heat exchanger (5). A fan mounting plate (6) is located inside the unit housing (3) and divides the inside of the unit housing (3) into an evaporation side (31) for accommodating the heat exchanger (5), the power supply bracket (1), and the electric heater module (2) and a fan side (32) for mounting the fan module (7). The fan mounting plate (6) is provided with at least two volute air vents (61) that match the shape and position of the electric heater module (2). The volute air vents (61) are used to align with the side air vents (741) of the fan module (7) and to make way for the electric heater module (2) to enter and exit the evaporation side (31).

3. The electric heater mounting structure according to claim 2, wherein A pair of mounting supports (13) are provided at both ends of the bracket body (11), and the power line (12) is connected to the power supply bracket (1) from the mounting support (13) at one end of the bracket body (11).

4. The electric heater mounting structure according to claim 3, wherein The main body (11) of the bracket is elongated. The mounting bracket (13) includes two mounting sides (131) connected in an L-shape. One of the mounting sides (131) of the mounting bracket (13) is vertically connected to the main body (11). The other side of the mounting bracket (13) is provided with at least one mounting hole (1311). The edge of the heat exchanger side plate (4) is provided with a mounting flange (41). The mounting flange (41) is provided with a connecting hole (411) that matches the mounting hole (1311). The two ends of the mounting bracket (13) are respectively connected to a pair of heat exchanger side plates (4) by connecting parts passing through the corresponding connecting holes (411) and mounting holes (1311).

5. The electric heater mounting structure according to any one of claims 1 to 4, wherein The mounting socket (111) is provided with a plug interface (1111) connected to the parallel circuit. The electric heater module (2) is provided with a plug connector (21) that matches the plug interface (1111). The electric heater module (2) is detachably plugged into the corresponding mounting socket (111) through the plug connector (21) and the plug interface (1111).

6. The electric heater mounting structure according to any one of claims 1 to 4, wherein Also includes: The control board is installed inside the unit housing (3) and has a power supply terminal for electrical connection with the power supply line (12).

7. The electric heater mounting structure according to any one of claims 2 to 4, wherein Also includes: The fan shaft (71) is rotatably mounted on the fan side (32) and parallel to the fan mounting plate (6); A drive unit (72) is located on the fan side (32) and mounted on the fan mounting plate (6) for driving the fan shaft (71) to rotate; The fan module (7) is a centrifugal fan, including: centrifugal fan blades (73), which are installed on the drive shaft and matched with the volute air outlet (61); The fan volute (74) is sleeved on the outside of the centrifugal fan blade (73) and installed on the fan mounting plate (6) at the volute air inlet (61). The fan volute (74) is provided with a side air inlet (741) facing the volute air inlet (61).

8. The electric heater mounting structure according to any one of claims 2 to 4, wherein The heat exchanger (5) is an evaporator.

9. The electric heater mounting structure according to any one of claims 1 to 4, wherein The electric heater module (2) is a PTC electric heater.

10. An air conditioner characterized by comprising: Includes the electric heater mounting structure as described in any one of claims 1-9.

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