Ventilation opening protection structure of portable power supply equipment

Abstract

The ventilation opening protection structure of the portable power supply equipment comprises a machine shell, a ventilation opening used for cooling an electric energy generating device arranged in the machine shell is formed in the machine shell, a ventilation hood is arranged outside the ventilation opening, and an integrally-connected ventilation hood end face is arranged on the outer periphery of the ventilation hood. A plurality of ventilation grooves are formed in the area defined by the end face of the ventilation hood, and openings of the ventilation grooves are obliquely arranged downwards from inside to outside. A ventilation cover is arranged on the outer side of the ventilation hood, the section of the ventilation cover is of a U-shaped structure with the periphery protruding, a ventilation cover opening edge is arranged on the periphery of an opening of the U-shaped structure and faces the end face of the ventilation hood, and the size of the periphery of the ventilation cover opening edge is larger than that of the periphery of the end face of the ventilation hood. The opening of the ventilation slot is covered inside the opening edge of the ventilation cover by the ventilation cover; the rainproof effect is greatly improved, and the dustproof effect is greatly improved at the lowest cost.

Description

Technical Field

[0001] The invention relates to the technical field of vent protection for power supply equipment, and in particular to a vent protection structure for a portable power supply equipment. Background Art

[0002] In the prior art, portable power supply equipment mainly includes four categories of products: portable energy storage power supply (Portable Power Stat ion), generator set driven by internal combustion engine (Generator Set), solar photovoltaic power station (Solar Power Stat ion), and welding machine (Welding Machine), etc. Power supply equipment has a wide range of applications, such as self-contained power supply, emergency power supply, power supply in power-deficient areas, power generation or material welding, etc.

[0003] Most small portable power supply devices use air cooling. The vents on the casing of existing power supply devices have only relatively simple protection functions and can usually only achieve protection in a single direction. For example, when the device changes from a lying state to a vertical state, if it rains, the protection structure designed for the lying state will fail, which can easily cause water to enter the equipment. The existing protection structure is also difficult to cope with harsh environments such as dust, and the protection effect is difficult to meet the equipment use requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a vent protection structure for a portable power supply device, aiming to improve the problem that the vent protection structure of the existing power supply device has a single protection orientation, which easily causes water to enter the equipment and is difficult to cope with harsh environments such as dust, and the protection effect is difficult to meet the use requirements of the power supply equipment.

[0005] The present invention is achieved in that:

[0006] A vent protection structure of a portable power supply device comprises a casing, wherein the casing is provided with a vent for cooling an electric energy generating device arranged inside the casing, a vent hood is arranged outside the vent, and an integrally connected vent hood end face is arranged on the outer circumference of the vent hood, a plurality of ventilation slots are arranged in the area surrounded by the vent hood end faces, and the openings of the ventilation slots are arranged obliquely downward from the inside to the outside; a vent cover is arranged on the outer side of the vent hood, and the cross-section of the vent cover is a U-shaped structure with a circumference raised, and a vent cover edge is arranged on the opening circumference of the U-shaped structure, and the vent cover edge is arranged toward the vent hood end face, and the circumferential size of the vent cover edge is larger than the circumferential size of the vent hood end face, so that the ventilation slot openings are covered by the vent cover inside the vent cover edge.

[0007] Furthermore, a filter element is arranged between the ventilation cover and the ventilation hood, and a cavity is formed between the filter element and the inner bottom of the ventilation cover; the circumferential size of the filter element is larger than the circumferential size of the end face of the ventilation hood, so that the filter element completely covers the ventilation hood; an annular space is formed between the circumference of the ventilation cover opening and the outer circumference of the ventilation hood, and a fan is arranged on the inner side of the ventilation hood. Under the action of the fan, the outside air enters the filter element for the first time from the annular space formed between the circumference of the ventilation cover opening and the outer circumference of the ventilation hood, and the air after the first filtration enters the cavity between the filter element and the inner bottom of the ventilation cover, the air flows from the periphery of the filter element to the middle of the filter element through the cavity, and then enters the filter element for the second time from the middle of the filter element, and the air after the second filtration enters the ventilation groove arranged on the ventilation hood, and finally enters the casing through the ventilation opening on the casing to cool the electric energy generating device.

[0008] Furthermore, a plurality of ribs extending toward the ventilation cover opening are arranged at the bottom inner side of the ventilation cover along the circumference of the ventilation cover opening, and a rib end face is arranged on the top of the rib. The height of the rib end face is lower than the ventilation cover opening, and each rib end face is located in the same plane, and the filter element is arranged between the ventilation cover end face and the rib end face.

[0009] Furthermore, the ventilation cover edge extends axially toward the ventilation hood end surface until it extends to the ventilation cover edge beyond the ventilation hood end surface, so that the axial positions of the ventilation cover edge and the ventilation hood end surface produce a mutually overlapping section.

[0010] Furthermore, rollers are arranged on the rear side of the casing, supporting feet and a pull-out rod device are arranged on the bottom of the casing, the pull rod device has a pull rod handle, and the ventilation cover and the pull rod handle are both arranged on the front side of the casing.

[0011] Furthermore, a first screw column is provided on the ventilation cover, a first connecting hole is provided at the center of the first screw column, a second connecting hole is provided on the ventilation hood, a U-shaped locking plate is provided at the edge of the housing ventilation opening, a threaded hole is provided on the locking plate, and the screw passes through the first connecting hole and the second connecting hole in sequence and is connected to the threaded hole of the locking plate, thereby connecting the ventilation cover and the ventilation hood to the outside of the housing ventilation opening in sequence.

[0012] Furthermore, a plurality of ribs are arranged around the first screw column of the ventilation cover, the rib end faces of the ribs are lower than the edge of the ventilation cover, and the end faces of the ribs are located in the same plane.

[0013] Furthermore, an annular sealing member is provided between the ventilation hood and the casing, and the sealing member is provided on the periphery of the locking plate.

[0014] Furthermore, a second screw column is provided on the inner side of the ventilation hood, and a fan driven by electricity is connected through the second screw column. The outside air enters the casing driven by the fan to cool the electric energy generating device.

[0015] Furthermore, the ventilation cover is made of plastic material using an injection molding process, and the filter element is a filter sponge.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The vent protection structure provided by the present invention is composed of a vent hood and a vent cover. The vent hood with downward slanting vent slots can effectively prevent rainwater from all directions from entering the casing under the all-round protection of the vent cover, greatly improving the rain protection effect.

[0018] 2. The present invention provides a filter element between the ventilation cover and the ventilation hood. The filter element is fitted with the end surface of the ventilation hood. By designing a unique rib support structure on the ventilation cover, a plurality of interconnected cavities are formed between the filter element and the inner bottom of the ventilation cover, thereby restricting the outside air to flow along a path that can enter and exit the filter element twice. The same sponge is used to achieve two air filtrations, greatly improving the dustproof effect at the lowest cost.

[0019] 3. The vent protection structure provided by the present invention has the obvious advantages of simple structure, good protection effect, high reliability and low cost. It is very suitable for application in various types of portable power supply equipment products and has obvious technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is an exploded view of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention when the ventilation hood, ventilation cover and filter element are removed;

[0023] Figure 4 It is a front view of the present invention;

[0024] Figure 5 It is a left side view of the present invention;

[0025] Figure 6 yes Figure 5 A magnified image of area A;

[0026] Figure 7 It is a front structural schematic diagram of the ventilation hood of the present invention;

[0027] Figure 8 It is a schematic diagram of the back structure of the ventilation hood of the present invention;

[0028] Fig. 9 It is a front structural schematic diagram of the ventilation cover of the present invention;

[0029] Fig.10 It is a schematic diagram of the back structure of the ventilation cover of the present invention.

[0030] In the figure: 1, casing; 2, vent; 3, ventilation hood; 4, end face of ventilation hood; 5, ventilation slot; 6, ventilation cover; 7, vent cover edge; 8, filter element; 9, cavity; 10, fan; 11, rib; 12, rib end face; 13, roller; 14, supporting foot; 15, pull rod device; 16, first screw column; 17, first connecting hole; 18, second connecting hole; 19, locking plate; 20, screw; 21, sealing element; 22, second screw column. DETAILED DESCRIPTION

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0033] The portable power supply equipment described in this application mainly includes the following four categories of products: portable energy storage power supply (Portable Power Stat ion), generator set (Generator Set) driven by internal combustion engine (Generator Set), solar photovoltaic power station (Solar Power Stat ion), and welding machine (Welding Machine).

[0034] The energy storage power supply mainly includes batteries, inverters and controllers. The batteries can be charged from AC power, solar energy, wind turbines or various fuel generators. The inverter can convert the DC power of the battery into AC output. Of course, various DC outputs can be added as needed, and various protection functions can be added through the controller to control the input and output.

[0035] The generator set is mainly composed of an engine, a generator and an electronic control system. The generator outputs electrical energy under the drive of the engine and can convert the chemical energy of fuel or gas into electrical energy. For digital generators, it also includes an inverter, which can convert the medium-frequency AC output of the generator into a stable-voltage industrial-frequency AC at various speeds.

[0036] Solar photovoltaic power stations use solar panels to convert solar energy into electrical energy, and convert direct current from solar panels or batteries into alternating current output through inverters and electronic control systems. Electric welding machines mainly include transformers and electronic control systems. The transformer steps down the voltage of AC / DC power from the mains, generators or batteries, and outputs low-voltage, high-current AC and / or DC power after processing by the electronic control system. The high current melts metal materials for welding.

[0037] The present invention has an electric energy generating device, and the electric energy generating device is different according to the above four power supply devices. The electric energy generating device of the portable energy storage power supply is mainly a battery, an inverter and a controller; the electric energy generating device of the generator set is mainly an engine, a generator and an inverter; the electric energy generating device of the solar photovoltaic power station is mainly an inverter and an electric control system, and of course, for the energy storage type solar power station, it also includes a storage battery; the electric energy generating device of the electric welding machine is mainly a transformer and an electric control system.

[0038] like Figure 1-Figure 5 As shown, a protective structure of a vent 2 of a portable power supply device includes a housing 1, a roller 13 is provided on the rear side of the housing 1, a support foot 14 and a pull-out rod device 15 are provided at the bottom of the housing 1, the pull rod device 15 has a pull rod handle, and a vent cover 6 and the pull rod handle are both provided on the front side of the housing 1. The housing 1 is provided with a vent 2 for cooling an electric energy generating device provided inside. A vent hood 3 is provided outside the vent 2, and an integrally connected vent hood end face 4 is provided on the outer circumference of the vent hood 3, and a plurality of vent slots 5 are provided in the area surrounded by the vent hood end face 4, and when the portable power supply device is laid flat, the openings of the vent slots 5 are provided obliquely downward from the inside to the outside. A ventilation cover 6 is provided on the outer side of the ventilation hood 3. The cross-section of the ventilation cover 6 is a U-shaped structure with a circumferential protrusion. A ventilation cover edge 7 is provided on the circumference of the opening of the U-shaped structure. The ventilation cover edge 7 is arranged toward the ventilation hood end face 4. The circumferential size of the ventilation cover edge 7 is larger than the circumferential size of the ventilation hood end face 4, so that the opening of the ventilation groove 5 is covered by the ventilation cover 6 inside the ventilation cover edge 7.

[0039] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Fig.10As shown, a filter 8 is arranged between the ventilation cover 6 and the ventilation hood 3. The ventilation cover 6 is made of plastic material by injection molding process. The filter 8 is a filter sponge. A cavity 9 is formed between the filter 8 and the inner bottom of the ventilation cover 6. The circumferential size of the filter 8 is larger than the circumferential size of the ventilation hood end face 4, so that the filter 8 completely covers the ventilation hood 3. A plurality of ribs 11 extending toward the ventilation cover edge 7 are arranged along the circumference of the ventilation cover mouth edge 7 at the inner bottom of the ventilation cover 6. Rib end faces 12 are arranged on the top of the ribs 11. The height of the rib end faces 12 is lower than the ventilation cover mouth edge 7, and each rib end face 12 is located in the same plane. The filter 8 is arranged between the ventilation hood end face 4 and the rib end face 12. The ventilation cover mouth edge 7 extends axially toward the ventilation hood end face 4 until it extends to the ventilation cover mouth edge 7 beyond the ventilation hood end face 4, so that the axial positions of the ventilation cover mouth edge 7 and the ventilation hood end face 4 produce overlapping sections, as shown in FIG. Figure 6 The S in the figure makes it possible for the ventilation cover 6 to completely cover the ventilation slot 5 on the ventilation hood 3 inside the ventilation cover 6.

[0040] like Figure 3 , Figure 5-Figure 10 As shown, the ventilation cover 6 is provided with a first screw column 16, the center of the first screw column 16 is provided with a first connection hole 17, the ventilation hood 3 is provided with a second connection hole 18, the edge of the ventilation opening 2 of the housing 1 is provided with a U-shaped locking plate 19, the locking plate 19 is provided with a threaded hole, and the screw 20 passes through the first connection hole 17 and the second connection hole 18 in sequence and is connected to the threaded hole of the locking plate 19, so that the ventilation cover 6 and the ventilation hood 3 are connected to the outside of the ventilation opening 2 of the housing 1 in sequence. A plurality of ribs 11 are provided around the first screw column 16 of the ventilation cover 6, the rib end face 12 of the rib 11 is lower than the edge 7 of the ventilation cover, and each rib end face 12 is located in the same plane. An annular seal 21 is provided between the ventilation hood 3 and the housing 1, and the seal 21 is made of rubber material and is arranged on the periphery of the locking plate 19, so that the seal between the ventilation hood 3 and the housing 1 is effectively ensured. A second screw column 22 is provided inside the ventilation cover 3, and a fan 10 driven by electricity is connected through the second screw column 20. The outside air enters the casing 1 driven by the fan 10 to cool the electric energy generating device.

[0041] The waterproof and dustproof principle of the present invention is: when the device is placed vertically, the ventilation cover 6 can prevent rainwater from above from entering the housing 1 through the ventilation slots 5, and because the ventilation cover edge 7 and the ventilation hood end face 4 have an overlapping section S, at this time, rainwater within the range of 0-90° in the vertical direction with the ventilation hood end face 4 cannot enter the ventilation slots 5, ensuring that no rainwater will enter the housing 1 of the portable power supply device in a vertical state. Similarly, when the portable power supply device is placed lying down, rainwater within the range of 0-90° in the vertical direction with the ventilation hood end face 4 cannot enter the ventilation slots 5, even if rainwater within the range of 90-180° enters the area of ​​the ventilation hood end face 4 from top to bottom, it will not enter the housing 1 upward from the ventilation slots 5 with the openings obliquely downward, thereby ensuring that no rainwater will enter the housing of the portable power supply device in a lying state, greatly improving the rainproof effect of the portable power supply device in all directions. In addition, in order to improve the dustproof effect of the equipment, the present invention sets a filter element 8 made of filter sponge between the ventilation cover 6 and the ventilation hood 3, and sets a rib 11 to support the filter element 8 at the inner bottom of the ventilation cover 6. The rib 11 is a discontinuous disconnected structure, and there is a gap in the middle of the long rib. Since the ventilation hood end face 4 is a planar structure, the outer side of the filter element 8 can fit closely with the ventilation hood end face 4, effectively preventing dust leakage. The inner side of the filter element 8 is supported by the rib end face 12 to form a suspended structure, thereby forming a interconnected cavity structure between the inner side of the filter element 8 and the inner bottom of the ventilation cover 6. Figure 6 As shown, an annular space is formed between the circumference of the ventilation cover edge 7 and the outer circumference of the ventilation cover 3. Under the action of the fan 10, the outside air enters the filter element 8 for the first time from the annular space formed between the circumference of the ventilation cover edge 7 and the outer circumference of the ventilation cover 3. The air after the first filtration enters the cavity 9 between the filter element 8 and the inner bottom of the ventilation cover 6. The air flows from the periphery of the filter element 8 to the middle of the filter element 8 through the cavity 9, and then enters the filter element 8 for the second time from the middle of the filter element 8. The air after the second filtration enters the ventilation slot 5 set on the ventilation cover 3, and finally enters the cooling power generating device inside the casing 1 through the vent 2 on the casing 1. In this way, two air filtrations are achieved using the same sponge, greatly improving the dustproof effect at the lowest cost.

[0042] In summary, the vent protection structure provided by the present invention is composed of a vent hood 3 and a vent cover 6. The vent hood 3 with the oblique downward ventilation slot 5 can effectively prevent rainwater from all directions from entering the housing 1 under the all-round shielding of the vent cover 6, greatly improving the rainproof effect. The present invention is provided with a filter 8 between the vent cover 6 and the vent hood 3. The filter 8 is fitted with the end face 4 of the vent hood. By designing a unique rib support structure on the vent cover 6, a plurality of interconnected cavities 9 are formed between the filter 8 and the inner bottom of the vent cover 6, thereby restricting the outside air to flow along a path that can enter and exit the filter 8 twice, and using the same sponge to achieve two air filtrations, greatly improving the dustproof effect at the lowest cost. Therefore, through the above-mentioned set of optimized designs, the vent protection structure provided by the present invention has the obvious advantages of simple structure, good protection effect, high reliability and low cost, and is very suitable for application in various types of portable power supply equipment products, with obvious technical advantages.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vent protection structure for a portable power supply device, comprising a housing, wherein the housing is provided with vents for cooling an electric energy generating device arranged therein, wherein: A ventilation hood is arranged outside the vent, and an integrally connected ventilation hood end face is arranged on the outer circumference of the ventilation hood, and a plurality of ventilation grooves are arranged in the area surrounded by the ventilation hood end faces, and the ventilation groove openings are arranged obliquely downward from the inside to the outside; a ventilation cover is arranged on the outside of the ventilation hood, and the cross-section of the ventilation cover is a U-shaped structure with a circumference protrusion, and a ventilation cover edge is arranged on the opening circumference of the U-shaped structure, and the ventilation cover edge is arranged toward the ventilation hood end face, and the circumferential size of the ventilation cover edge is larger than the circumferential size of the ventilation hood end face, so that the ventilation slot openings are covered by the ventilation cover inside the ventilation cover edge.

2. The vent protection structure of a portable power supply device according to claim 1, characterized in that: A filter is arranged between the ventilation cover and the ventilation hood, and a cavity is formed between the filter and the inner bottom of the ventilation cover; the circumferential size of the filter is larger than the circumferential size of the end face of the ventilation hood, so that the filter completely covers the ventilation hood; an annular space is formed between the circumference of the ventilation cover opening and the outer circumference of the ventilation hood, and a fan is arranged on the inner side of the ventilation hood. Under the action of the fan, the outside air enters the filter for the first time from the annular space formed between the circumference of the ventilation cover opening and the outer circumference of the ventilation hood, and the air after the first filtration enters the cavity between the filter and the inner bottom of the ventilation cover, the air flows from the periphery of the filter to the middle of the filter through the cavity, and then enters the filter for the second time from the middle of the filter, and the air after the second filtration enters the ventilation slot arranged on the ventilation hood, and finally enters the casing through the ventilation opening on the casing to cool the electric energy generating device.

3. The vent protection structure of a portable power supply device according to claim 2, characterized in that: A plurality of ribs extending toward the ventilation cover opening are arranged at the inner bottom of the ventilation cover along the circumference of the ventilation cover opening, and a rib end face is arranged on the top of the rib. The height of the rib end face is lower than the ventilation cover opening, and each rib end face is located in the same plane, and the filter is arranged between the ventilation cover end face and the rib end face.

4. The vent protection structure of a portable power supply device according to claim 1, characterized in that: The ventilation cover opening edge axially extends toward the ventilation hood end surface until it extends to the ventilation cover opening edge beyond the ventilation hood end surface, so that the axial positions of the ventilation cover opening edge and the ventilation hood end surface form a mutually overlapping section.

5. The vent protection structure of a portable power supply device according to claim 1, characterized in that: The rear side of the housing is provided with rollers, the bottom of the housing is provided with supporting feet and a pull-out rod device, the pull rod device has a pull rod handle, and the ventilation cover and the pull rod handle are both arranged on the front side of the housing.

6. The vent protection structure of a portable power supply device according to claim 1, characterized in that: The ventilation cover is provided with a first screw column, a first connecting hole is provided at the center of the first screw column, a second connecting hole is provided on the ventilation hood, a U-shaped locking plate is provided at the edge of the housing ventilation opening, a threaded hole is provided on the locking plate, and the screws pass through the first connecting hole and the second connecting hole in sequence and are connected with the threaded hole of the locking plate, thereby connecting the ventilation cover and the ventilation hood to the outside of the housing ventilation opening in sequence.

7. A vent protection structure for a portable power supply device according to claim 6, characterized in that: A plurality of ribs are arranged around the first screw column of the ventilation cover, the rib end faces of the ribs are lower than the edge of the ventilation cover, and the end faces of the ribs are located in the same plane.

8. The vent protection structure of a portable power supply device according to claim 6, characterized in that: An annular sealing member is arranged between the ventilation hood and the casing, and the sealing member is arranged on the periphery of the locking plate.

9. The vent protection structure of a portable power supply device according to claim 1, characterized in that: A second screw column is arranged on the inner side of the ventilation cover, and a fan driven by electricity is connected through the second screw column. The outside air enters the casing under the drive of the fan to cool the electric energy generating device.

10. The vent protection structure of a portable power supply device according to claim 1, characterized in that: The ventilation cover is made of plastic material by injection molding, and the filter element is a filter sponge.

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