Lower air supply machine room air conditioner

Abstract

The utility model provides a lower air supply machine room air conditioner which comprises an electric heating component and a fan component, the electric heating component is arranged at the upper end of the fan component, and the electric heating component and the fan component are fixedly connected into a whole. Therefore, air flow can be heated by the electric heating component and then sent into a machine room through the fan component. According to the utility model, the electric heater and the fan are integrated into one module to form a structure of combining the electric heater and the fan, so that the electric heater is convenient to install and maintain, wiring can be realized during preassembling, the assembling efficiency is improved, the wiring difficulty is reduced, and the problems that the electric heater of an air conditioner in a lower air supply machine room is difficult to install and maintain are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to a lower air supply machine room air conditioner. Background Art

[0002] With the rapid development of communication technology and the advent of the big data era, data centers have also entered a period of rapid development. To ensure the safety of data centers, many medium and large data centers and medium and high-density data centers have higher requirements for machine room air conditioners, and the functional requirements for machine room air conditioners are also increasing, such as heating function, humidifying function, etc.

[0003] Lower air supply is a common air supply method for machine room air conditioners. The structure of a lower air supply machine room air conditioner is generally divided into two parts, the upper part is two heat exchangers (the chilled water unit is a surface cooler, and the air-cooled unit is an evaporator), and the lower part is a fan chamber. When the lower air supply machine room air conditioner needs to increase the heating function, in order to save space in the fan chamber, the electric heater is generally installed inside the two heat exchangers, above the fan chamber. However, installing the electric heater in this position has problems such as difficult installation, inconvenient after-sales maintenance, and too far from the fan (serious heat loss).

[0004] Due to the technical problems in the existing lower air supply machine room air conditioners such as difficult installation and maintenance of the electric heating device, the utility model researches and designs a lower air supply machine room air conditioner. Summary of the Utility Model

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defect of inconvenient installation of the electric heating device in the existing lower air supply machine room air conditioner, so as to provide a lower air supply machine room air conditioner.

[0006] To solve the above problems, the utility model provides a lower air supply machine room air conditioner, which includes:

[0007] An electric heating component and a fan component, the electric heating component is arranged at the upper end of the fan component, and the electric heating component is fixedly connected with the fan component as a whole, so that the air flow can be heated by the electric heating component and then sent into the machine room through the fan component.

[0008] In some embodiments,

[0009] It further includes a housing. After installation, the electric heating component is located inside the housing, the fan component sinks to the outside below the housing, and the electric heating component is integrally fixed with the fan component.

[0010] In some embodiments,

[0011] The fan component extends into the internal air duct of the machine room.

[0012] In some embodiments,

[0013] The electric heating component includes an electric heating element, an electric heating mounting plate, and a mounting beam. The electric heating element is fixedly mounted on the electric heating mounting plate. The bottom of the electric heating mounting plate is fixedly connected to the mounting beam, and the bottom end of the mounting beam is fixedly mounted on the fan component.

[0014] In some embodiments,

[0015] There are at least two electric heating mounting plates. The two electric heating mounting plates are arranged oppositely, and the horizontal distance between the two opposite electric heating mounting plates increases sequentially from top to bottom. The electric heating element is arranged on one of the electric heating mounting plates and faces or faces away from the surface of the other electric heating mounting plate.

[0016] In some embodiments,

[0017] It further includes a strengthening beam. The strengthening beam is connected between the sides of at least one horizontal side of the two opposite electric heating mounting plates to connect the two electric heating mounting plates. In the projection plane of the vertical plane, the structure formed by the two opposite electric heating mounting plates, the electric heating element, the strengthening beam, and the mounting beam is an "A" - shaped structure with a smaller top and a larger bottom.

[0018] In some embodiments,

[0019] The strengthening beam includes a first strengthening beam, a second strengthening beam, and a third strengthening beam. The first strengthening beam, the second strengthening beam, and the third strengthening beam are arranged at intervals from top to bottom. The first strengthening beam, the second strengthening beam, and the third strengthening beam are all arranged on both horizontal sides of the two opposite electric heating mounting plates.

[0020] In some embodiments,

[0021] There are at least two mounting beams, and the at least two mounting beams are arranged at intervals and are all mounted on the bottom of the electric heating mounting plate; there are also multiple electric heating elements, and at least two electric heating elements are arranged on each electric heating mounting plate, and the at least two electric heating elements are arranged at intervals.

[0022] In some embodiments,

[0023] The electric heating mounting plate is in a "hui" - shaped structure, which has a structure of an internal hollow frame. The internal hollow frame allows air flow to pass through, and the electric heating element is arranged at the internal hollow frame; a thermostat is also arranged on the electric heating mounting plate.

[0024] In some embodiments,

[0025] The fan component includes a top cover, a guide ring, a fan, a column, and a base. The top cover, the guide ring, the fan, and the base are arranged in sequence from top to bottom. The column is connected between the top cover and the base. The mounting beam of the electric heating component is installed at the upper end of the top cover. The fan wire extends from the base and reaches the top cover via the column. The electric heating wire extends from the electric heating component and then extends from top to bottom via the electric heating mounting plate, converges with the fan wire, and is then connected to the electrical box together.

[0026] The underfeed air handling unit air conditioner provided by the present utility model has the following beneficial effects:

[0027] 1. By integrally and fixedly connecting the electric heating component and the fan component, and arranging the electric heating component at the upper end of the fan component, the present utility model enables the air flow to pass through the electric heating first from top to bottom and then be sent into the machine room by the fan component, realizing underfeed air supply. The electric heating and the fan are integrated into a module, forming a structure combining electric heating and the fan, which changes the installation method of the electric heating. This structure is more conducive to the installation and maintenance of the electric heating. Wiring can be carried out during pre-installation, improving the assembly efficiency and reducing the wiring difficulty. It solves the problems of difficult installation and maintenance of the electric heating in the underfeed air handling unit air conditioner. At the same time, the electric heating and the fan are relatively close, and the air is immediately blown out by the fan after being heated, reducing heat loss and greatly increasing the heating efficiency.

[0028] 2. The electric heating component of the present utility model is installed above the fan in an A-shaped structure, with stable structure. Moreover, the A-shaped electric heating component is relatively farther from the fan, and will not affect the fan and the fan blades due to overheating. And the A-shaped structure has a larger heating area, so the heating efficiency is higher. The electric heating is installed above the fan, making relatively more sufficient use of the space of the air cavity. A larger fan can be selected, which can improve the refrigeration efficiency. Description of the Drawings

[0029] Figure 1 is the internal structure diagram before installation of the underfeed air handling unit air conditioner of the present utility model;

[0030] Figure 2 is the internal structure diagram after installation of the underfeed air handling unit air conditioner of the present utility model (after the fan sinks);

[0031] Figure 3 is the overall front view structure diagram of the electric heating component + fan component of the present utility model;

[0032] Figure 4 is the exploded view of the electric heating component + fan component of the present utility model;

[0033] Figure 5 is the overall structure diagram of the electric heating component of the present utility model;

[0034] Figure 6 is an exploded view of the electric heating component of the present utility model;

[0035] Figure 7 is an overall structure diagram of the fan component of the present utility model;

[0036] Figure 8 is an exploded view of the fan component of the present utility model.

[0037] The reference numerals are shown as:

[0038] 100, electric heating component; 200, fan component; 300, housing; 1, temperature limiter; 2, electric heating element; 3, first reinforcing beam; 4, second reinforcing beam; 5, electric heating mounting plate; 6, third reinforcing beam; 7, mounting beam; 8, internally hollow frame; 9, top cover; 10, flow guiding ring; 11, fan; 12, column; 13, base. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc., can be used here to describe the spatial positional relationships between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0044] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings, and thus cannot be construed as limiting the protection scope of the present utility model.

[0045] Such asFigure 1-8 As shown in the figure, the utility model provides an under - feed air - handling unit for a machine room, which includes:

[0046] An electric heating component 100 and a fan component 200. The electric heating component 100 is arranged at the upper end of the fan component 200, and the electric heating component 100 is fixedly connected to the fan component 200 as a whole, so that the air flow can be heated by passing through the electric heating component 100 and then sent into the machine room through the fan component 200.

[0047] In the utility model, the electric heating component and the fan component are fixedly connected as a whole, and the electric heating component is arranged at the upper end of the fan component, so that the air flow is heated from top to bottom by the electric heating first and then sent into the machine room through the fan component to realize under - feed air supply. The electric heating and the fan are integrated into a module, forming a structure combining the electric heating component and the fan component, which changes the installation method of the electric heating. This structure is more conducive to the installation and maintenance of the electric heating. Wiring can be carried out during pre - installation, improving the assembly efficiency and reducing the wiring difficulty. It solves the problems that the electric heating of the under - feed air - handling unit for a machine room is difficult to install and maintain. At the same time, the electric heating and the fan are relatively close, and the air is immediately blown out by the fan after being heated, reducing the heat loss and greatly increasing the heating efficiency.

[0048] In some embodiments,

[0049] It further includes a housing 300. After installation, the electric heating component 100 is located inside the housing 300, the fan component 200 sinks to the outside below the housing 300, and the electric heating component 100 is integrally fixed to the fan component 200.

[0050] Based on the traditional under - feed air - handling unit for a machine room, the utility model invents a structure combining electric heating and a fan. The electric heating component and the fan component are respectively single modules, and then combined into a unified module by bolts. During pre - installation, the wiring of the electric heating and the fan can be combined together to improve the wiring efficiency. At the same time, when the fan sinks, the electric heating sinks together with the whole component. At this time, the electric heating is located at the fan cavity (as shown in Figure 2 the figure). At this time, only by opening the sealing plate in front of the fan cavity, the electric heating can be maintained, which is extremely convenient and facilitates the after - sales maintenance of the electric heating. Moreover, the fan and the electric heating are unified as a whole, reducing the heat loss during the heating process and increasing the heating efficiency.

[0051] In some embodiments,

[0052] The fan component 200 extends into the internal air duct of the machine room.

[0053] After the lower air supply unit of the present utility model is installed, the fan is sunk into the air duct of the machine room, which can make the internal air cavity space of the unit larger, circulate more air, and the fan works directly in the air duct, with higher efficiency.

[0054] The beneficial effects of the present utility model are as follows:

[0055] 1. Provide a structure combining electric heating and a fan. By combining electric heating and the fan, the installation method of electric heating is changed. This structure is more conducive to the installation and maintenance of electric heating, and solves the problems of difficult installation and maintenance of electric heating in the lower air supply machine room air conditioner.

[0056] 2. The electric heating and the fan of the present utility model can be wired during pre-assembly, which improves the assembly efficiency and reduces the wiring difficulty.

[0057] 3. The electric heating and the fan of the present utility model are installed together and combined into a module. After the air is heated, it is directly blown out, reducing heat loss and improving heating efficiency, and solving the problem of heat loss due to the long distance between the electric heating and the fan.

[0058] In some embodiments,

[0059] The electric heating component 100 includes an electric heating element 2, an electric heating mounting plate 5, and a mounting beam 7. The electric heating element 2 is fixedly installed on the electric heating mounting plate 5. The bottom of the electric heating mounting plate 5 is fixedly connected to the mounting beam 7, and the bottom end of the mounting beam 7 is fixedly installed on the fan component 200.

[0060] This is the preferred structural form of the electric heating component of the present utility model. The electric heating element can be energized to release heat to heat the air. The electric heating mounting plate is used to install the electric heating element, and the mounting beam is used to fixedly install the electric heating mounting plate, and effectively fix it to the fan component through the mounting beam, achieving the effect of integrating the electric heating component and the fan component into an integrated structure.

[0061] In some embodiments,

[0062] There are at least two electric heating mounting plates 5. The two electric heating mounting plates 5 are arranged oppositely, and the horizontal distance between the two opposite electric heating mounting plates 5 increases sequentially from top to bottom. The electric heating element 2 is arranged on one of the electric heating mounting plates 5 and faces or deviates from the surface of the other electric heating mounting plate 5.

[0063] The utility model can increase the heating area of the electric heating element on the electric heating mounting plate for the flowing air by arranging at least two electric heating mounting plates which are oppositely arranged and have a structure with the horizontal distance increasing successively from top to bottom, greatly improving the heating efficiency. Moreover, the distance between the electric heating element and the fan is relatively increased, so that the fan and the fan blade will not be affected by overheating, improving the safety and reliability of the fan components and extending the service life.

[0064] In some embodiments,

[0065] It further includes a reinforcing beam which is connected between the sides of at least one horizontal side of two opposite electric heating mounting plates 5 to connect the two electric heating mounting plates 5. In the projection plane of the vertical plane, the structure formed by the two opposite electric heating mounting plates 5, the electric heating element 2, the reinforcing beam and the mounting beam 7 is an "A" - shaped structure with a smaller top and a larger bottom (the "A" - shaped structure is the structure with a smaller top and a larger bottom as shown in Figure 5 That is, the inclined electric heating mounting plates. As long as the two inclined and opposite electric heating mounting plates are arranged in the form of a structure with a smaller top and a larger bottom, they are all within the protection scope of the utility model).

[0066] The electric heating component of the utility model is installed above the fan in an "A" - shaped structure, with stable structure. Moreover, the electric heating component in the "A" - shaped structure is relatively farther from the fan, so it will not affect the fan and the fan blade due to overheating. And the "A" - shaped structure has a larger heating area, so the heating efficiency is higher. The electric heating is installed above the fan, making relatively more sufficient use of the space of the air cavity, and a larger fan can be selected, which can improve the refrigeration efficiency.

[0067] In some embodiments,

[0068] The reinforcing beam includes a first reinforcing beam 3, a second reinforcing beam 4 and a third reinforcing beam 6. The first reinforcing beam 3, the second reinforcing beam 4 and the third reinforcing beam 6 are arranged at intervals successively from top to bottom. The first reinforcing beam 3, the second reinforcing beam 4 and the third reinforcing beam 6 are all arranged on both horizontal sides of two opposite electric heating mounting plates 5.

[0069] This is a further preferred structural form of the reinforcing beam of the utility model. By arranging the first, second and third reinforcing beams at intervals successively from top to bottom, the bonding strength between the two opposite electric heating mounting plates can be further enhanced, and the structural strength of the overall electric heating component can be improved.

[0070] In some embodiments,

[0071] The mounting beams 7 are at least two, and the at least two mounting beams 7 are arranged at intervals and are all mounted on the bottom of the electric heating mounting plate 5; the electric heating elements 2 are also multiple, at least two electric heating elements 2 are arranged on each electric heating mounting plate 5, and the at least two electric heating elements 2 are arranged at intervals.

[0072] Through at least two mounting beams, the present utility model can further enhance the bonding strength between the electric heating component and the fan component, improve the overall structural strength, and the multiple electric heating components can further enhance the heating effect on the air flow.

[0073] In some embodiments,

[0074] The electric heating mounting plate 5 is in a "return" shape structure, which has a structure of an internal hollow frame 8, the internal hollow frame 8 can allow air flow to pass through, and the electric heating element 2 is arranged at the internal hollow frame 8; a thermostat 1 is also arranged on the electric heating mounting plate 5.

[0075] Through the electric heating mounting plate in a "return" shape structure, the present utility model can form a structure of an internal hollow frame inside it to allow air flow to pass through. At the same time, arranging the electric heating element at the internal hollow frame can make the electric heating element be in direct contact with the air flow, thereby improving the heating efficiency of the air flow; through the thermostat, the temperature can be detected and the temperature can be prevented from being too high.

[0076] In some embodiments,

[0077] The fan component 200 includes a top cover 9, a guide ring 10, a fan 11, a column 12 and a base 13. The top cover 9, the guide ring 10, the fan 11 and the base 13 are arranged in sequence from top to bottom, and the column 12 is connected between the top cover 9 and the base 13; the mounting beam 7 of the electric heating component is mounted on the upper end of the top cover 9; the fan wire extends out from the base 13 and reaches the top cover 9 via the column 12, and the electric heating wire extends from the electric heating element 2 and then extends from top to bottom via the electric heating mounting plate 5, and converges with the fan wire and then is connected to the electrical box together.

[0078] This is the preferred structural form of the fan component of the present utility model, which effectively realizes the fixed connection between the fan component and the electric heating component, and the fan wire and the electric heating wire are converged into one body and connected to the electrical box, improving the wiring efficiency, reducing the wiring difficulty, and improving the assembly efficiency of the down - blowing fan room air conditioner.

[0079] The lower supply air fan room air conditioner of the present utility model is divided into upper and lower parts. The upper part is two heat exchangers (the two heat exchangers are generally in an inverted V shape, G shape, or U shape with sufficient internal space), and the lower part is a fan. When the unit requires an electric heating function, it is generally selected to install the electric heater inside the two heat exchangers, above the fan cavity, and fixed at the connecting plate of the two heat exchangers. However, this installation method is not convenient for installation and not easy for after-sales maintenance. Moreover, the installation position of the electric heater is too far from the fan. After the unit is installed and the fan sinks, the distance between the two becomes even farther, resulting in greater heat loss and affecting the heating efficiency. Therefore, to solve the above problems, the present utility model proposes a lower supply air fan room air conditioner with an integrated electric heater and fan.

[0080] As shown in the present utility model Figure 1-2 , the entire component is divided into two modules: an electric heating component 100 and a fan component 200, which are preferably fixedly connected by bolts. As Figure 7-8 shown, the fan component consists of 5 parts. The fan 11 is installed on the base 13, the air deflector 10 is installed on the top cover 9, and the top cover 9 and the base 13 are connected by 4 columns 12. The fan wire passes through the column 12, runs from the base 13 to the top cover 9, and there is a wire-passing rubber ring at the top cover 9, through which the fan wire exits. As Figure 5-6 shown, the electric heating component 100 consists of 7 parts. The electric heating element 2 is installed on the electric heating mounting plate 5, and the temperature limiter 1 is installed adjacent to the electric heating. When the temperature limiter 1 detects too high a temperature, it will feedback information to the control board, and the electric heating will stop working to avoid danger caused by excessive temperature. The two electric heating mounting plates 5 on the left and right are connected by the first reinforcing beam 3, the second reinforcing beam 4, the third reinforcing beam 6, and the mounting beam 7, forming an A-shaped structure as a whole, with stable structure. The electric heating component 100 and the fan component 200 are connected by the mounting beam 7 and are preferably fixedly connected by bolts. The entire component is installed on the unit base during assembly, which is convenient for unit transportation and delivery. When the unit is installed on site, the entire component is then sunk. The electric heating wire runs from the electric heating mounting plate downwards, converges with the fan wire, and then both go to the electrical box together, facilitating wire routing. A certain length needs to be reserved for the electric heating and fan wires to prevent the wires from being too short after the fan sinks. After the unit is installed and the fan sinks, the electric heating also sinks accordingly and comes into the fan cavity (as Figure 2 shown). At this time, only need to open the sealing plate in front of the fan cavity, and the electric heating can be maintained, which is extremely convenient. Moreover, since the electric heating and the fan are installed in one module and are very close, the heated air is directly blown out after heating, so the heating efficiency is relatively higher. The A-shaped structure keeps a certain distance between the electric heating and the fan, preventing the fan from being affected by the overheating of the electric heating (especially when using injection-molded fan blades and air deflectors). Moreover, the A-shaped structure also makes the air inlet area larger and better for heating. The electric heating is installed above the fan, which also makes better use of the internal space of the unit. There is more sufficient space in the fan cavity that can be utilized, a larger fan can be selected, and the refrigeration efficiency of the air conditioner can also be improved.

[0081] The utility model is applicable to most of the air conditioners in the air supply fan rooms. By providing a mechanism combining electric heating and a fan, the installation method of the electric heating and the fan is improved, the internal wiring of the machine is optimized, and it is easy to maintain the electric heating after sales. The heating efficiency of the electric heating is improved, and the internal space of the unit is fully utilized.

[0082] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The above is only the preferred implementation mode of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as within the protection scope of the utility model.

Claims

1. A downflow machine room air conditioner, characterized in that: include: An electric heating component (100) and a fan component (200), wherein the electric heating component (100) is arranged at the upper end of the fan component (200), and the electric heating component (100) and the fan component (200) are fixedly connected as a whole, so that an airflow can be heated by the electric heating component (100) and then sent into a machine room through the fan component (200).

2. The downflow machine room air conditioner according to claim 1, characterized in that: It also includes a shell (300). After installation, the electric heating component (100) is located inside the shell (300), the fan component (200) sinks to the lower outside of the shell (300), and the electric heating component (100) and the fan component (200) are fixed as a whole.

3. The downflow machine room air conditioner according to claim 2, characterized in that: The fan component (200) extends into the internal air duct of the machine room.

4. The downflow machine room air conditioner according to claim 1, characterized in that: The electric heating component (100) comprises an electric heating element (2), an electric heating mounting plate (5) and a mounting beam (7); the electric heating element (2) is mounted and fixed on the electric heating mounting plate (5); the bottom of the electric heating mounting plate (5) is fixedly connected to the mounting beam (7); and the bottom end of the mounting beam (7) is fixedly mounted on the fan component (200).

5. The downflow machine room air conditioner according to claim 4, characterized in that: The electric heating installation plates (5) have at least two, the two electric heating installation plates (5) are arranged opposite to each other, and the distance between the two opposite electric heating installation plates (5) along the horizontal direction increases from top to bottom, and the electric heating element (2) is arranged on one of the electric heating installation plates (5) and faces or turns away from the surface of the other electric heating installation plate (5).

6. The downflow machine room air conditioner according to claim 5, characterized in that: It also includes a reinforcing beam, which is connected between the side surfaces of at least one horizontal side of two opposite electric heating installation plates (5) to connect the two electric heating installation plates (5). In the projection surface of the vertical plane, the structure composed of the two opposite electric heating installation plates (5), the electric heating element (2), the reinforcing beam and the installation beam (7) presents an "A"-shaped structure with a small top and a large bottom.

7. The downflow machine room air conditioner according to claim 6, characterized in that: The reinforcing beam comprises a first reinforcing beam (3), a second reinforcing beam (4) and a third reinforcing beam (6); the first reinforcing beam (3), the second reinforcing beam (4) and the third reinforcing beam (6) are arranged in sequence from top to bottom, and the first reinforcing beam (3), the second reinforcing beam (4) and the third reinforcing beam (6) are arranged on both sides of two opposite electric heating installation plates (5) in a horizontal direction.

8. The downflow machine room air conditioner according to claim 4, characterized in that: There are at least two mounting beams (7), and at least two mounting beams (7) are arranged at intervals and are all installed on the bottom of the electric heating mounting plate (5); there are also multiple electric heating elements (2), and at least two electric heating elements (2) are arranged on each electric heating mounting plate (5), and at least two electric heating elements (2) are arranged at intervals.

9. The downflow machine room air conditioner according to claim 8, characterized in that: The electric heating installation plate (5) is a "U"-shaped structure having an internal hollow frame (8) structure, wherein the internal hollow frame (8) allows airflow to pass therethrough, and the electric heating element (2) is arranged at the internal hollow frame (8); a temperature limiter (1) is also arranged on the electric heating installation plate (5).

10. The downflow machine room air conditioner according to claim 4, characterized in that: The fan component (200) comprises a top cover (9), a guide ring (10), a fan (11), a column (12) and a base (13); the top cover (9), the guide ring (10), the fan (11) and the base (13) are arranged in sequence from top to bottom, and the column (12) is connected between the top cover (9) and the base (13); the mounting beam (7) of the electric heating component is mounted to the upper end of the top cover (9); the fan line extends from the base (13) and reaches the top cover (9) via the column (12); the electric heating line extends from the electric heating element (2) and then extends from top to bottom via the electric heating mounting plate (5), and is connected to the electrical box after merging with the fan line.

Images