Variable-frequency electric cabinet structure for indoor unit fan

Abstract

The utility model discloses a frequency conversion electric control box structure for indoor unit fan, including frame, stand column and frequency converter, said frame is rectangular setting, said frame is equipped with two sets of heat exchange subassembly, heat exchange subassembly includes two inclined heat exchange sheet body, at least one set of heat exchange component is provided with a location interval between the heat exchange sheet body, and the location interval is located between the stand column and the frequency converter. A main electric control box is arranged in the positioning interval; the frame is provided with two heat exchange assemblies, a clearance interval is arranged between the two heat exchange assemblies, a fluid channel with the diameter gradually expanded from bottom to top is defined by the clearance interval, the stand column is arranged on the frame, the stand column is arranged between the two heat exchange assemblies, the frequency converter comprises a box body and a frequency converter body arranged in the box body, the box body is arranged between the upper suspension and the lower suspension, and the box body is located in the fluid channel. The heat dissipation of the main electric control box and the frequency converter is effectively improved, meanwhile, the installation is simpler, the problem that the main electric control box needs to be transformed due to the fact that the frequency converter is large in size is solved, and the maintenance convenience and the assembly convenience of the main electric control box are improved.

Description

Technical Field

[0001] This utility model relates to the field of indoor air conditioning fans, and in particular to a variable frequency electrical control box structure for indoor unit fans. Background Technology

[0002] The indoor unit fan of the air conditioner uses a three-phase asynchronous motor. In order to achieve adjustable speed, it is equipped with a frequency converter. The speed is adjusted by the frequency converter on site so that the air volume and static pressure of the fan are matched with the length of the duct and the room load.

[0003] Large-capacity air conditioning units typically have high-power fans, and their frequency converters are generally also quite large. Traditionally, the frequency converter is placed inside the unit's main electrical control box, which results in a large main control box and also necessitates consideration of heat dissipation.

[0004] The function of an indoor fan is to deliver fluid at a predetermined temperature to the room. When an indoor air conditioning unit (i.e., a heat exchange component) is connected to multiple spaces, it is necessary to distribute the fluid to achieve precise control. The air volume control is mainly controlled by a frequency converter.

[0005] Specifically, the inverter is 170mm deep. If placed in the main control box, the control box will be at least 170mm deep, which will not only hinder wiring operations but also increase the air resistance of the unit and cause poor heat dissipation of the inverter. Utility Model Content

[0006] The main purpose of this utility model is to propose a variable frequency control box structure for indoor unit fans, which aims to make the variable frequency control box easy to install, simple to maintain, and has good heat dissipation.

[0007] To achieve the above objectives, this utility model proposes a variable frequency electrical control box structure for an indoor unit fan, comprising:

[0008] The frame is rectangular in shape and has two sets of heat exchange components. Each heat exchange component includes two inclined heat exchange plates. At least one set of heat exchange components is provided with a positioning interval, and the positioning interval is provided with a main electrical control box. An air-avoidance interval is provided between the two heat exchange components, and the air-avoidance interval forms a fluid channel that gradually expands in diameter from bottom to top.

[0009] A column, which is mounted on the frame and positioned between two heat exchange components;

[0010] A frequency converter, comprising a housing and the frequency converter disposed within the housing, the housing being located between an upper suspension and a lower suspension, and the housing being situated within a fluid channel.

[0011] In practical design, the frequency converter and the main electrical control box are separated into individual units, installed in the heat exchange components and between the two heat exchange components, respectively. This can effectively improve the heat dissipation of the main electrical control box and the frequency converter, while simplifying installation and avoiding the problem of modifying the main electrical control box due to the large size of the frequency converter. It also improves the maintenance and assembly convenience of the main electrical control box. Attached Figure Description

[0012] Figure 1 This is a magnified schematic diagram of a portion of the indoor unit of an air conditioner.

[0013] Figure 2 The structure is designed for the cooperation between the column and the frequency converter;

[0014] Figure 3 This is a plan view of the frequency converter and the column;

[0015] Figure 4 This is a 3D schematic diagram of a frequency converter.

[0016] In the picture,

[0017] 1 represents the frame, 1 represents the heat exchange assembly, 11a represents the heat exchange plate, 11b represents the triangular section, and 12 represents the fluid channel.

[0018] 2 is the upright, 21 is the upper suspension, 22 is the lower suspension, and 23 is the support plate.

[0019] 3 represents the frequency converter, and 30 represents the included angle.

[0020] 41 is the first heat dissipation through-hole, and 42 is the second heat dissipation through-hole.

[0021] 5 is the control button.

[0022] 6 is the main electrical control box. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] like Figures 1 to 4 As shown, a variable frequency electrical control box structure for an indoor unit fan includes:

[0027] The frame 1 is rectangular in shape and has two sets of heat exchange components 1. Each heat exchange component 1 includes two inclined heat exchange plates 11a. At least one set of heat exchange components 1 is provided with a positioning interval, and the positioning interval is provided with a main electrical control box. An air-avoidance interval is provided between the two heat exchange components 1, and the air-avoidance interval forms a fluid channel 12 that gradually expands in diameter from bottom to top.

[0028] Column 2, which is located on frame 1 and between two heat exchange components 1;

[0029] The inverter 3 includes a housing and the inverter 3 disposed inside the housing. The housing is located between the upper suspension 21 and the lower suspension 22 and is located within the fluid channel 12.

[0030] In the actual design, the inverter 3 and the main electrical control box are separated into individual units, which are installed in the heat exchange component 1 and between the two heat exchange components 1, respectively. This can effectively improve the heat dissipation of the main electrical control box and the inverter 3, while making the installation simpler. It avoids the problem of modifying the main electrical control box due to the large size of the inverter 3, and improves the maintenance and assembly convenience of the main electrical control box.

[0031] Specifically, the housing is inclined between the upper suspension 21 and the lower suspension 22 (inclined in the horizontal direction), with part of the housing extending out of the column 2. Since the fluid is transported from bottom to top, without changing the housing, the inclined housing can increase the contact area between the housing and the fluid, thereby improving the cooling effect on the electrical control box.

[0032] In this embodiment of the utility model, a support plate 23 is provided between the upper suspension 21 and the lower suspension 22, and the side wall of the housing is installed on the support plate 23. Furthermore, there is a gap between the lower wall of the housing and the lower suspension 22, and between the upper wall and the upper suspension 21, thereby reducing the impact of liquid on the inverter 3 and improving the service life and operational stability of the inverter 3.

[0033] Specifically, the support plate 23 and the column 2 form a 45-degree angle 30, which facilitates the extension of the lower suspension 22 of the housing and makes installation simpler, i.e., the exposed area between the frame 1 and the support plate 23 is larger, making it easier to install the frequency converter 3.

[0034] The 45-degree setting ensures both stable installation of the housing's contact surface and a sufficiently large contact area with the fluid.

[0035] In this embodiment of the utility model, the support plate 23 is located in the middle of the column 2, thereby reducing the interference of liquid or foreign objects on the frequency converter 3.

[0036] Specifically, the back of the housing is located away from the column 2, and the back is provided with a first heat dissipation hole 41, which can achieve sufficient heat dissipation for the frequency converter 3.

[0037] In this embodiment of the utility model, the bottom wall and top wall of the box are respectively provided with second heat dissipation holes 42, thereby improving the heat dissipation of the electrical control box.

[0038] Specifically, the front end of the enclosure is equipped with a control button 5, which is tilted. The independent inverter 3 control box is used for on-site fan commissioning. Only one door needs to be opened, without opening the main control box, which makes it convenient to set the inverter 3 parameters on-site and makes on-site commissioning more convenient.

[0039] In this embodiment of the utility model, two inclined heat exchange plates 11a form a triangular section 11b that gradually narrows from bottom to top.

[0040] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A variable frequency electrical control box structure for an indoor unit fan, characterized in that, include: The frame is rectangular in shape and has two sets of heat exchange components. Each heat exchange component includes two inclined heat exchange plates. At least one set of heat exchange components is provided with a positioning interval, and the positioning interval is provided with a main electrical control box. An air-avoidance interval is provided between the two heat exchange components, and the air-avoidance interval forms a fluid channel that gradually expands in diameter from bottom to top. A column, which is mounted on the frame and positioned between two heat exchange components; A frequency converter, comprising a housing and the frequency converter disposed within the housing, the housing being located between an upper suspension and a lower suspension, and the housing being situated within a fluid channel.

2. The variable frequency control box structure for indoor unit fans as described in claim 1, characterized in that: The box body is inclined between the upper and lower suspensions, with part of the box body extending out of the column.

3. The variable frequency control box structure for indoor unit fans as described in claim 2, characterized in that: A support plate is provided between the upper suspension and the lower suspension, the side wall of the housing is installed on the support plate, and there is a gap between the lower wall of the housing and the lower suspension, as well as between the upper wall and the upper suspension.

4. The variable frequency control box structure for indoor unit fans as described in claim 3, characterized in that: The support plate and the column form a 45-degree angle.

5. The variable frequency control box structure for indoor unit fans as described in claim 4, characterized in that: The support plate is located in the middle of the column.

6. The variable frequency control box structure for indoor unit fans as described in claim 1, characterized in that: The back of the enclosure is located away from the column, and the back is provided with a first heat dissipation hole.

7. The variable frequency control box structure for indoor unit fan as described in claim 1, characterized in that: The bottom and top walls of the enclosure are respectively provided with second heat dissipation holes.

8. The variable frequency control box structure for an indoor unit fan as described in claim 4, characterized in that: The front end of the housing is equipped with a control button, which is tilted.

9. The variable frequency control box structure for an indoor unit fan as described in claim 4, characterized in that: Two inclined heat exchange fins form a triangular section that gradually narrows from bottom to top.

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