Isolated ventilation inverter

Abstract

The utility model discloses an isolated ventilation inverter, belongs to the technical field of ventilation inverters, and aims to solve the problems that a mechanism for drying air is lacked in the prior art, and electrical elements in the ventilation inverter are easy to break down when operating in a high-humidity environment. Comprising an inverter body, a center hole is formed in the center of the side face of the inverter body, the center hole is circular, a cooling fan is installed in the center hole, two sets of threaded holes are formed in the two sides of the center hole of the inverter body, and the inverter body is movably connected with a drying assembly through the threaded holes in a threaded mode. According to the isolation type ventilation inverter, moisture in air can be conveniently absorbed through the arrangement of the drying assembly, the dry working environment of electrical elements in the inverter is ensured, the fault probability of the inverter is reduced, the stability is improved, and the cover plate is movably arranged, so that a drying agent is convenient to replace, and the drying efficiency is improved. The drying agent can be limited and fixed through the abutting rod and the baffle.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation inverters, and in particular relates to an isolated ventilation inverter. Background Art

[0002] According to whether there is a transformer in the system, the inverter can be divided into three types: transformerless, power frequency transformer type and high frequency transformer type. Among them, the use of power frequency transformer type and high frequency transformer type is an isolated inverter. In the case of power failure in the rail transit passenger compartment (pantograph network power failure, auxiliary converter failure, etc.), the air conditioning and other systems stop working. At this time, the compartment is closed and it is easy to have insufficient air supply. The ventilation inverter can convert the battery power into about 220V three-phase AC after boosting and inverting, and supply the fan of the air conditioning unit to meet the ventilation requirements of the compartment.

[0003] The ventilation inverter needs to dissipate heat through a cooling fan when working. When the subway is running (rail transit includes subways and light rails), it is located below the ground for most of the time. In some areas with high humidity, the air humidity under the ground is high. The existing technology lacks a mechanism to dry the air. The electrical components inside the ventilation inverter operate in a high humidity environment and are prone to failure (when the train is under maintenance or not running, it is parked in the station and the air humidity is in line with the train). Therefore, a technical measure is proposed to solve the problem that the existing technology lacks a mechanism to dry the air, and the electrical components inside the ventilation inverter operate in a high humidity environment and are prone to failure. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide an isolated ventilation inverter, aiming to solve the problem that the prior art lacks a mechanism for drying the air, and the electrical components inside the ventilation inverter are prone to malfunction when operating in a high humidity environment.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides an isolated ventilation inverter, including an inverter body, a center hole is opened at the center position of the side of the inverter body, the center hole is circular, a cooling fan is installed in the center hole, two groups of threaded holes are opened on both sides of the center hole of the inverter body, and the inverter body is movably connected with a drying component through the threaded holes. Thanks to the setting of the drying component, it is convenient to absorb moisture in the air, so that the air is dry, ensuring a dry working environment for the electrical components inside the inverter, reducing the probability of inverter failure, and improving stability. In addition, the movably arranged cover plate is more convenient for replacing the desiccant, and the support rod and baffle can limit and fix the desiccant.

[0008] Furthermore, the upper part of the inverter body is threadedly connected with an organic cover, the lower part of the inverter body is provided with mounting plates on both sides, the side of the inverter body away from the drying component is provided with multiple groups of evenly distributed heat dissipation holes, and the side of the inverter body is provided with an interface end.

[0009] Furthermore, a display screen is provided on one side of the upper surface of the cover close to the interface end, and a plurality of groups of evenly distributed buttons are provided below the display screen.

[0010] Furthermore, the drying component includes a tube body, and two groups of ear plates are symmetrically distributed at both ends of one side of the tube body close to the inverter body. The ear plates are threaded with bolts, and the bolts are adapted to the threaded holes. The tube body is connected to the inverter body through the ear plates and bolts.

[0011] Furthermore, a baffle is provided on one side of the tube body close to the inverter body, the tube body is threadedly connected to a cover plate, and a plurality of sets of rotating columns are evenly provided on the outside of the cover plate. The rotating columns are semi-cylindrical. Thanks to the setting of the rotating columns, greater friction is provided when the cover plate is rotated, thereby facilitating the rotation of the cover plate.

[0012] Furthermore, the baffle plate and the cover plate are provided with a plurality of groups of evenly distributed circular holes, and the space between the baffle plate and the cover plate is filled with a desiccant.

[0013] Furthermore, an extrusion tube is installed at the center position of the cover plate, a spring is installed in the extrusion tube, the extrusion tube is slidably engaged with an extrusion plate, the other end of the spring is fixedly installed on the extrusion plate, a connecting rod is installed at the end of the extrusion plate away from the spring, the other end of the connecting rod is rotatably connected to a push plate, and a plurality of groups of evenly distributed push rods are installed at the other end of the push plate, and the push rods are in contact with the desiccant.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can conveniently absorb moisture in the air through the arrangement of the drying component, thereby making the air dry, ensuring a dry working environment for the electrical components inside the inverter, reducing the probability of inverter failure, and improving stability. In addition, the movably arranged cover plate is convenient for replacing the desiccant, and the push rod and the baffle plate can limit and fix the desiccant. The drying component is threadedly installed on the inverter body through the ear plate and the bolts, the cover plate is taken out from the tube body, and then the desiccant is put in, the cover plate is rotated so that the push rod is against the desiccant, and then the installation of the desiccant is completed. When the cooling fan is started, the air enters the inverter through the cover plate, the desiccant, and the baffle plate. Under the action of the desiccant, the moisture in the air is absorbed, and then the air enters the inverter to dissipate heat for the electrical components, and the hot air is discharged through the cooling holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model in a separated state;

[0020] Figure 3 This is a side view of the structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the drying component structure;

[0022] Figure 5 It is a schematic diagram of the connection structure between the push rod and the extruded tube.

[0023] The marks in the accompanying drawings are: 1. Inverter body; 2. Drying assembly; 3. Machine cover; 4. Display screen; 5. Button; 6. Interface end; 7. Mounting plate; 8. Center hole; 9. Cooling fan; 10. Threaded hole; 11. Cooling hole; 201. Tube body; 202. Bolt; 203. Ear plate; 204. Baffle; 205. Cover plate; 206. Round hole; 207. Abutment plate; 208. Rotating column; 209. Abutment rod; 210. Extrusion tube; 211. Spring; 212. Extrusion plate; 213. Connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] This specific implementation is an isolated ventilation inverter, and its structural diagram is as follows: Figure 1 , Figure 2 , Figure 3 As shown, it includes an inverter body 1, a center hole 8 is opened at the center position of the side of the inverter body 1, the center hole 8 is circular, a heat dissipation fan 9 is installed in the center hole 8, two groups of threaded holes 10 are opened on both sides of the center hole 8 of the inverter body 1, the inverter body 1 is threadedly connected with a drying component 2 through the threaded holes 10, the upper part of the inverter body 1 is threadedly connected with a cover 3, and mounting plates 7 are installed on both sides of the lower part of the inverter body 1. A plurality of groups of evenly distributed heat dissipation holes 11 are opened on the side of the inverter body 1 away from the drying component 2, an interface end 6 is provided on the side of the inverter body 1, and a side of the upper surface of the cover 3 close to the interface end 6 A display screen 4 is provided, and a plurality of evenly distributed buttons 5 are provided at the lower part of the display screen 4. The inverter body 1 is installed on each carriage of the rail transit through the wiring terminal. In the event of power failure in the passenger compartment of the rail transit, the air conditioning and other systems stop working. At this time, the inverter body 1 starts to work to boost the electric energy in the battery into about 220V three-phase AC power, which is supplied to the ventilator of the air conditioning unit to meet the ventilation requirements of the carriage, thereby ensuring the safety of the passengers. When the operating environment humidity of the subway is high, the air drawn in by the heat dissipation fan 9 is dried by the drying component 2 to ensure the normal operation of the electrical components inside the inverter.

[0026] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the drying component 2 includes a tube body 201, and two groups of ear plates 203 are symmetrically distributed at both ends of the tube body 201 close to the inverter body 1. The ear plates 203 are threadedly connected with bolts 202, and the bolts 202 are adapted to the threaded holes 10. The tube body 201 is connected to the inverter body 1 through the ear plates 203 and the bolts 202. A baffle 204 is provided on the side of the tube body 201 close to the inverter body 1. The tube body 201 is threadedly connected with a cover plate 205, and the cover plate The outer part of the cover plate 205 is evenly provided with a plurality of rotating columns 208, the rotating columns 208 are semi-cylindrical, the baffle plate 204 and the cover plate 205 are provided with a plurality of evenly distributed circular holes 206, the position between the baffle plate 204 and the cover plate 205 is filled with a desiccant, an extrusion tube 210 is installed at the center of the cover plate 205, a spring 211 is installed in the extrusion tube 210, the extrusion tube 210 is slidably engaged with an extrusion plate 212, and the other end of the spring 211 is fixedly installed on the extrusion plate 212 On the upper side, a connecting rod 213 is installed at one end of the extrusion plate 212 away from the spring 211, and the other end of the connecting rod 213 is rotatably connected to the push plate 207. The other end of the push plate 207 is installed with multiple groups of evenly distributed push rods 209, and the push rod 209 contacts the desiccant. The drying component 2 is threadedly installed on the inverter body 1 through the ear plate 203 and the bolt 202. The rotating column 208 drives the cover plate 205 to rotate, and the cover plate 205 is rotated to be taken out from the tube body 201, and then the desiccant is put in so that the desiccant is against the baffle 204, and then the cover plate 205 is rotated to make the push rod 209 against the desiccant. When the cover plate 205 rotates, the push rod 209 moves backward, and the push rod 209 moves backward to squeeze the push plate 207. The push plate 207 moves backward to drive the connecting rod 213 to move backward, and the connecting rod 213 moves backward to squeeze the extrusion plate 212. When the extrusion plate 212 moves backward, it squeezes the spring 211, and then the installation of the desiccant is completed.

[0027] Working principle: The inverter body 1 is installed on each carriage of rail transit through the wiring terminal (the inverter can be a Mercer PH3000 inverter, which consists of an inverter bridge, control logic and filter circuit). When power is lost in the passenger compartment of rail transit, the air conditioning system and other systems stop working. At this time, the inverter body 1 starts to work and inverts the electric energy in the battery into about 220V three-phase AC power to supply the ventilator of the air conditioning unit to meet the ventilation requirements of the carriage, thereby ensuring the safety of passengers;

[0028] When the humidity of the subway operating environment is high (when the train is under maintenance or not running, it is parked in the station and the air humidity meets the standard), the air drawn in by the cooling fan 9 is dried by the drying component 2 to ensure the normal operation of the electrical components inside the inverter. The specific method is to thread the drying component 2 on the inverter body 1 through the ear plate 203 and the bolt 202, rotate the rotating column 208 to drive the cover plate 205 to rotate, and the cover plate 205 is rotated and taken out of the tube body 201, and then the desiccant is put in (the desiccant can be placed in a ventilation box or a mesh bag) so that the desiccant is against the baffle 204, and then the cover plate 205 is rotated so that the push rod 209 is against the desiccant. When the cover plate 205 rotates, the push rod 209 moves backward, and the push rod 209 moves backward to squeeze the push plate 207. The push plate 207 moves backward to drive the connecting rod 213 to move backward, and the connecting rod 213 moves backward to squeeze the squeezing plate 212. When the squeezing plate 212 moves backward, it squeezes the spring 211, and then the installation of the desiccant is completed. When the cooling fan 9 is started, the air passes through the drying component 2 to absorb moisture, thereby making the air dry. When the desiccant needs to be replaced, the cover 205 is opened to replace the desiccant. Through the setting of the drying component 2, it is convenient to absorb moisture in the air, thereby making the air dry, ensuring a dry working environment for the electrical components inside the inverter, reducing the probability of inverter failure, and improving stability. In addition, the movably arranged cover 205 is more convenient for replacing the desiccant, and the push rod 209 and the baffle 204 can limit and fix the desiccant.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An isolated ventilation inverter, comprising an inverter body (1), characterized in that: A center hole (8) is provided at the center position of the side of the inverter body (1); the center hole (8) is circular in shape; a heat dissipation fan (9) is installed in the center hole (8); two groups of threaded holes (10) are provided on both sides of the center hole (8) of the inverter body (1); and the inverter body (1) is threadedly movably connected to a drying component (2) via the threaded holes (10).

2. The isolated ventilation inverter according to claim 1, characterized in that: The upper part of the inverter body (1) is threadedly connected to a cover (3), and mounting plates (7) are installed on both sides of the lower part of the inverter body (1). The side of the inverter body (1) away from the drying component (2) is provided with a plurality of groups of evenly distributed heat dissipation holes (11), and the side of the inverter body (1) is provided with an interface end (6).

3. The isolated ventilation inverter according to claim 2, characterized in that: A display screen (4) is provided on one side of the upper surface of the cover (3) close to the interface end (6), and a plurality of groups of evenly distributed buttons (5) are provided below the display screen (4).

4. The isolated ventilation inverter according to claim 1, characterized in that: The drying component (2) comprises a tube body (201), and two groups of ear plates (203) are symmetrically distributed at both ends of one side of the tube body (201) close to the inverter body (1). The ear plates (203) are threadedly connected and penetrated with bolts (202), and the bolts (202) are adapted to the threaded holes (10). The tube body (201) is connected to the inverter body (1) via the ear plates (203) and the bolts (202).

5. The isolated ventilation inverter according to claim 4, characterized in that: A baffle (204) is provided on one side of the tube body (201) close to the inverter body (1); a cover plate (205) is threadedly connected to the tube body (201); a plurality of groups of rotating columns (208) are evenly provided on the outside of the cover plate (205); and the rotating columns (208) are semi-cylindrical.

6. The isolated ventilation inverter according to claim 5, characterized in that: The baffle plate (204) and the cover plate (205) are provided with a plurality of groups of evenly distributed circular holes (206), and the position between the baffle plate (204) and the cover plate (205) is filled with a desiccant.

7. The isolated ventilation inverter according to claim 6, characterized in that: An extrusion tube (210) is installed at the center of the cover plate (205), a spring (211) is installed in the extrusion tube (210), and an extrusion plate (212) is slidably engaged with the extrusion tube (210), and the other end of the spring (211) is fixedly installed on the extrusion plate (212), and a connecting rod (213) is installed at one end of the extrusion plate (212) away from the spring (211), and the other end of the connecting rod (213) is rotatably connected to a push plate (207), and a plurality of groups of evenly distributed push rods (209) are installed at the other end of the push plate (207), and the push rods (209) are in contact with the desiccant.

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