CN211089436U

CN211089436U - Moisture-proof switching power supply

Info

Publication number: CN211089436U
Application number: CN201922338149.1U
Authority: CN
Inventors: 李昌煌
Original assignee: Nanjing Geyi Power Supply Technology Co ltd
Current assignee: Nanjing Geyi Power Supply Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-07-24
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a dampproofing formula switching power supply relates to switching power supply technical field, including outer box, the inside fixedly connected with circuit board of outer box, the top fixedly connected with humidity transducer of circuit board, the interior roof fixedly connected with of outer box draw bellows. The utility model relates to a rational in infrastructure, it can be through setting up miniature air exhauster, under the effect of electrothermal tube, the heat that can give off the electrothermal tube heats the inside air of electrothermal box, and this hot-air blows the top to the circuit board under the gravitation effect of miniature air exhauster, dehumidify the circuit board, when needs dispel the heat to outer box inside, make electrothermal tube stop work, extract outer box external portion nature wind through miniature air exhauster and cool down the circuit board, in order to reach the purpose of heat dissipation cooling, through setting up sealed disc, under the effect with the spring, can release the internal high pressure of external box, and can self-sealing when outer box internal pressure is low.

Description

Moisture-proof switching power supply

Technical Field

The utility model relates to a switching power supply technical field specifically is a dampproofing formula switching power supply.

Background

A switching mode power supply, also called a switching power supply or a switching converter, is a high-frequency power conversion device, which is a power supply, and functions to convert a level voltage into a voltage or current required by a user terminal through different types of architectures. The input of the switching power supply is mostly an ac power supply (e.g., commercial power) or a dc power supply, and the output is mostly equipment requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two.

The inside dampproofing mode of current switching power supply generally is parcel or rubber coating, and it is not good that these two kinds of dampproofing modes all have the dampproofing effect of leak, and these two kinds of dampproofing modes can seriously influence switching power supply's heat dispersion, cause its life to subtract the weak point, for this reason, we provide dampproofing formula switching power supply and solve above problem.

SUMMERY OF THE UTILITY MODEL

One) technical problem to be solved

The utility model aims at providing a moisture-proof switching power supply in order to compensate the not enough of prior art.

II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a dampproofing formula switching power supply, includes outer box, the inside fixedly connected with circuit board of outer box, the top fixedly connected with humidity transducer of circuit board, the interior roof fixedly connected with of outer box draws bellows, the miniature air exhauster that the interior roof fixedly connected with equidistance of drawing bellows was arranged, and the interior diapire of drawing bellows sets up the exhaust vent that the equidistance was arranged, the middle part fixedly connected with electric heat box of outer box upper surface, and the electric heat box communicates with the drawing bellows through the connecting hole mutually, the electrothermal tube that the interior diapire fixedly connected with equidistance of electric heat box was arranged, and the upper surface of electric heat box sets up the fresh air inlet that the equidistance was arranged.

The louvre that the equidistance was arranged is seted up to the lateral surface of outer box, every the inside of louvre all is provided with sealing device, every sealing device all is including being cylindric movable rod, and the movable rod runs through the louvre and extends to the outside of outer box, the diameter value of movable rod is less than the diameter value of louvre, every the movable rod is located the equal fixedly connected with sealing disc of one end of outer box, and the equal fixedly connected with gag lever post of the other end of every movable rod, every the surface of movable rod all overlaps and is equipped with the spring.

Furthermore, each heat dissipation hole is located the outside one end of outer box and has all been seted up the circular slot, and sealed disc is located the inside of circular slot.

Furthermore, one end of the spring close to the outer box body is fixedly connected with the inner side wall of the outer box body, and one end of the spring far away from the outer box body is connected with the limiting rod.

Furthermore, the internal thread of the electric heating box is connected with an activated carbon layer, and the activated carbon layer is positioned above the electric heating tube.

Furthermore, each input end of the miniature exhaust fan is communicated with the connecting hole, and the output end of each miniature exhaust fan is communicated with the air outlet hole.

Furthermore, the size of the electric heating box is equal to that of the air inducing box, and the electric heating box is positioned right above the air inducing box.

Thirdly), the beneficial effects are as follows:

compared with the prior art, this dampproofing formula switching power supply possesses following beneficial effect:

one, the utility model discloses a set up miniature air exhauster, under the effect of electrothermal tube, the heat that can give off the electrothermal tube heats the inside air of electrothermal box, and this hot-air blows the top to the circuit board under the gravitation effect of miniature air exhauster, dehumidify the circuit board, when needs dispel the heat to outer box internal portion, make electrothermal tube stop work, external natural wind cools down the circuit board outside through miniature air exhauster extraction, in order to reach the purpose of heat dissipation cooling, through setting up sealed disc, under the effect with the spring, can release the internal high pressure of external box, and can self-sealing when external impurity gets into the inside of outer box when external internal pressure is low.

Two, the utility model discloses a circular slot enables sealed disc to be located inside it, and carries out finish machining to the diapire in the circular slot and makes the device's sealed effect better, has avoided carrying out the extravagant processing expense of finish machining to external box whole, through setting up the spring, enables sealed disc automatic re-setting, makes the device sealed effect better, through setting up the activated carbon layer, can filter the inside air of getting into the electric heat box, and the impurity in the effectual reduction air gets into outer box.

Drawings

Fig. 1 is a cross-sectional view of a front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 3 is a schematic perspective view of the sealing device of the present invention.

In the figure: 1. an outer case; 101. heat dissipation holes; 2. a circuit board; 3. a humidity sensor; 4. a wind guide box; 401. a miniature exhaust fan; 402. an air outlet; 5. connecting holes; 6. an electric heating box; 601. an air inlet hole; 602. an activated carbon layer; 603. an electric heating tube; 7. a sealing device; 701. a circular groove; 702. a sealing disc; 703. a spring; 704. a limiting rod; 705. a movable rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: the utility model provides a dampproofing formula switching power supply, including outer box 1, the inside fixedly connected with circuit board 2 of outer box 1, the top fixedly connected with humidity transducer 3 of circuit board 2, the interior roof fixedly connected with induced draft case 4 of outer box 1, the miniature air exhauster 401 that the interior roof fixedly connected with equidistance was arranged of induced draft case 4, and the inner diapire of induced draft case 4 sets up the exhaust vent 402 that the equidistance was arranged, the middle part fixedly connected with electric heat box 6 of outer box 1 upper surface, and electric heat box 6 is linked together with induced draft case 4 through connecting hole 5, the electrothermal tube 603 that the inner diapire fixedly connected with equidistance was arranged of electric heat box 6, and the inlet opening 601 that the equidistance was arranged is seted up to the upper surface of.

The louvre 101 that the equidistance was arranged is seted up to outer box 1's lateral surface, the inside of every louvre 101 all is provided with sealing device 7, every sealing device 7 all is including being cylindric movable rod 705, and movable rod 705 runs through louvre 101 and extends to outer box 1's outside, movable rod 705's diameter value is less than louvre 101's diameter value, every movable rod 705 is located the equal fixedly connected with sealing disc 702 of one end of outer box 1, and the equal fixedly connected with gag lever post 704 of the other end of every movable rod 705, every movable rod 705's surface all overlaps and is equipped with spring 703.

Further, a circular groove 701 is formed in one end, located outside the outer box 1, of each heat dissipation hole 101, and the sealing disc 702 is located inside the circular groove 701. Through circular slot 701, enable sealed disc 702 and be located inside it, and carry out the finish machining to the bottom wall in circular slot 701 and make the device's sealed effect better, avoided carrying out the extravagant processing expense of finish machining to outer box 1 whole.

Further, one end of the spring 703 close to the outer box 1 is fixedly connected to the inner side wall of the outer box 1, and one end of the spring 703 far from the outer box 1 is connected to the limit rod 704. By arranging the spring 703, the sealing disc 702 can automatically reset, so that the device has a good sealing effect.

Further, an activated carbon layer 602 is screwed inside the electric heating box 6, and the activated carbon layer 602 is located above the electric heating tube 603. Through setting up activated carbon layer 602, can filter the inside air that gets into electric heat box 6, the impurity in the effectual reduction air gets into outer box 1.

Further, the input end of each miniature exhaust fan 401 is communicated with the connecting hole 5, and the output end of each miniature exhaust fan 401 is communicated with the air outlet 402. The device has higher working efficiency.

Further, the size of the electric heating box 6 is equal to that of the air inducing box 4, and the electric heating box 6 is positioned right above the air inducing box 4. The method has universality and reduces installation procedures.

The working principle is as follows: the humidity sensor 3 is electrically connected with the input end of an external control device, the electric heating tube 603 and the micro exhaust fan 401 are both electrically connected with the output end of the external control device, when the humidity sensor 3 detects that the internal temperature of the outer box 1 is overlarge, the humidity sensor 3 transmits an electric signal to the external control device, the external control device controls the micro exhaust fan 401 and the electric heating tube 603 to be started, the electric heating tube 603 is electrified to heat, the circuit board 2 is effectively dehumidified, when the micro exhaust fan 401 extracts hot air in the electric heating box 6, the hot air can be blown to the circuit board 2 through the air outlet 402, because the outer box 1 is in a high-pressure state at the moment, the pressure pushes the sealing disc 702 through the heat dissipation holes 101 to enable the sealing disc 702 to move outwards, and the spring 703 contracts at the moment, when the internal pressure of the outer box 1 is reduced, the spring 703 can, when the humidity sensor 3 detects that the humidity inside the outer box 1 meets the requirement, the humidity sensor can send a signal to the external control device to stop the micro exhaust fan 401 and the electric heating tube 603, when the heat of the circuit board 2 is too high and the heat of the circuit board needs to be dissipated, the external control device controls the micro exhaust fan 401 to start and controls the electric heating tube 603 to stop, and at the moment, the micro exhaust fan 401 extracts natural wind outside the outer box 1 to cool the circuit board 2.

It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "fixedly," "mounted," "connected," and "connected" are to be construed broadly, e.g., "mounted" may be fixedly connected, or detachably connected, or integrally connected; "connected" may be mechanically or electrically connected; "connected" may be directly connected or indirectly connected through an intermediate member, or may be internal or external to two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dampproofing formula switching power supply, includes outer box (1), the inside fixedly connected with circuit board (2) of outer box (1), its characterized in that: a humidity sensor (3) is fixedly connected above the circuit board (2), an air guiding box (4) is fixedly connected to the inner top wall of the outer box body (1), miniature exhaust fans (401) which are arranged at equal intervals are fixedly connected to the inner top wall of the air guiding box (4), air outlet holes (402) which are arranged at equal intervals are formed in the inner bottom wall of the air guiding box (4), an electric heating box (6) is fixedly connected to the middle of the upper surface of the outer box body (1), the electric heating box (6) is communicated with the air guiding box (4) through a connecting hole (5), electric heating pipes (603) which are arranged at equal intervals are fixedly connected to the inner bottom wall of the electric heating box (6), and air inlet holes (601) which are arranged at equal intervals are formed in the upper surface;

the louvre (101) that the equidistance was arranged are seted up to the lateral surface of outer box (1), every the inside of louvre (101) all is provided with sealing device (7), every sealing device (7) all is including being cylindric movable rod (705), and movable rod (705) run through louvre (101) and extend to the outside of outer box (1), the diameter value of movable rod (705) is less than the diameter value of louvre (101), every movable rod (705) are located the equal fixedly connected with sealing disc (702) of one end of outer box (1), and the equal fixedly connected with gag lever post (704) of the other end of every movable rod (705), every the surface of movable rod (705) all overlaps and is equipped with spring (703).

2. A moisture-proof switching power supply as claimed in claim 1, wherein: each heat dissipation hole (101) is located one end of the outer portion of the outer box body (1) and is provided with a circular groove (701), and the sealing disc (702) is located inside the circular groove (701).

3. A moisture-proof switching power supply as claimed in claim 1, wherein: one end of the spring (703) close to the outer box body (1) is fixedly connected with the inner side wall of the outer box body (1), and one end of the spring (703) far away from the outer box body (1) is connected with the limiting rod (704).

4. A moisture-proof switching power supply as claimed in claim 1, wherein: the internal thread of the electric heating box (6) is connected with an activated carbon layer (602), and the activated carbon layer (602) is positioned above the electric heating pipe (603).

5. A moisture-proof switching power supply as claimed in claim 1, wherein: the input end of each miniature exhaust fan (401) is communicated with the connecting hole (5), and the output end of each miniature exhaust fan (401) is communicated with the air outlet (402).

6. A moisture-proof switching power supply as claimed in claim 1, wherein: the size of the electric heating box (6) is equal to that of the air leading box (4), and the electric heating box (6) is positioned right above the air leading box (4).