Over-temperature load reduction device of optical storage inverter

Abstract

The utility model provides an over-temperature load reduction device of an optical storage inverter, which belongs to the technical field of electronic power and comprises a metal plate cabinet, a protective door hinged to the outer surface of the metal plate cabinet and a plurality of heat dissipation openings formed in the top of the metal plate cabinet. And the driving mechanism comprises a mounting disc fixedly connected to the inner surface of the sheet metal cabinet and a fixed disc fixedly mounted on the inner wall of the sheet metal cabinet and matched with the mounting disc for use. According to the utility model, through cooperation of the driving mechanism and the cooling mechanism, the dustproof blades can be automatically opened when the internal part of the sheet metal cabinet is over-temperature, and the permanent magnet synchronous motor is automatically controlled to drive the impeller to rotate, so that the air circulation speed is rapidly increased, the heat dissipation efficiency is improved, and the inverter is prevented from being over-heated; and after load reduction in the sheet metal cabinet, the dustproof blades are automatically closed to protect the impeller, and meanwhile, the permanent magnet synchronous motor is automatically controlled to stop, so that the effects of avoiding unnecessary energy consumption and preventing dust from being accumulated on the surface of the impeller are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electronic power technology field, concretely relates to a kind of over-temperature load shedding device of light storage inverter. BACKGROUND

[0002] The over-temperature load shedding device of light storage inverter is used to reduce the heat generation by reducing the load of the inverter when the temperature of the inverter is too high, thereby indirectly reducing the temperature inside the sheet metal cabinet, preventing the inverter from causing fire and other safety accidents due to overheating, protecting the inverter from overheating damage, and ensuring the safe, stable and efficient operation of the light storage inverter.

[0003] Some over-temperature load shedding devices of light storage inverters in the prior art usually use fans to cool the inverter. When the fans stop working, dust may accumulate on the surface of the fans. The accumulation of dust not only affects the subsequent cooling efficiency of the fans, but also may cause fan failure, thereby affecting the over-temperature protection function of the inverter. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide an over-temperature load shedding device of light storage inverter, which aims to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An over-temperature load shedding device of light storage inverter includes a bearing mechanism, a protective door hingedly connected to the outer surface of a sheet metal cabinet, and a plurality of heat dissipation openings formed in the top of the sheet metal cabinet.

[0007] A drive mechanism includes a mounting disc fixedly connected to the inner surface of the sheet metal cabinet, a fixed disc fixedly installed on the inner wall of the sheet metal cabinet and cooperating with the mounting disc, a fixed frame fixedly connected to the top of the sheet metal cabinet, a fixed sleeve fixedly installed on the inner surface of the fixed frame, a thermal expansion block arranged in the inner cavity of the fixed sleeve, a sliding block slidingly arranged on the inner wall of the thermal expansion block, a drive rod fixedly connected to the outer surface of the sliding block, a spring sleeved on the outer surface of the drive rod, a transmission block hingedly connected to the penetrating end of the drive rod, a circular ring fixedly connected to the outer end surface of the transmission block, a plurality of fixed columns circumferentially arranged on the outer surface of the circular ring, a connecting piece slidingly sleeved on the outer surface of the fixed column, a support shaft fixedly connected to the bottom of the connecting piece, and a dustproof blade fixedly sleeved on the penetrating end of the support shaft.

[0008] Further, a cooling mechanism is arranged on the top of the sheet metal cabinet and cooperates with the dustproof blade.

[0009] In a preferred embodiment of this utility model, the outer surface of the drive rod is in sliding contact with the inner surface of the fixed sleeve, and the fixed post is fixedly connected to the bottom of the ring.

[0010] In a preferred embodiment of this utility model, the outer surface of the support shaft is in rotatable contact with the inner surface of the mounting plate, and the through end of the support shaft is fixedly mounted on the inner surface of the mounting plate by a bearing.

[0011] As a preferred embodiment of this utility model, the cooling mechanism includes a first contact switch fixedly installed on the outer surface of the sliding block, a second contact switch fixedly installed on the inner wall of the fixed sleeve and used in conjunction with the first contact switch, and a permanent magnet synchronous motor adapted to be installed on the top of the sheet metal cabinet.

[0012] As a preferred embodiment of the present invention, the cooling mechanism further includes a connecting column fixedly connected to the output end of the permanent magnet synchronous motor via a coupling, a first pulley fixedly sleeved on the outer surface of the connecting column, a belt sleeved on the outer surface of the first pulley, and a second pulley sleeved on the inner surface of the other end of the belt.

[0013] As a preferred embodiment of the present invention, the cooling mechanism further includes a rotating shaft fixedly connected to the inner surface of the second pulley, and an impeller fixedly sleeved on the through end of the rotating shaft and used in conjunction with the dustproof blades.

[0014] In a preferred embodiment of this utility model, the outer surface of the rotating shaft is in rotatable contact with the inner surface of the mounting plate, and the through end of the rotating shaft is fixedly mounted on the inner surface of the mounting plate by a bearing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the drive mechanism and the cooling mechanism, not only can the dustproof blades be automatically opened when the temperature inside the sheet metal cabinet is too high, and the permanent magnet synchronous motor be automatically controlled to drive the impeller to rotate, thereby rapidly increasing the air circulation speed, improving heat dissipation efficiency, and preventing the inverter from overheating; it can also automatically close the dustproof blades to protect the impeller after the load inside the sheet metal cabinet is reduced, and at the same time automatically control the permanent magnet synchronous motor to stop, so as to avoid unnecessary energy consumption and prevent dust from accumulating on the impeller surface. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the local structure at point A;

[0019] Figure 3 This is a schematic diagram of the internal structure of the sheet metal cabinet in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the drive mechanism in this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified view of the local structure at point B.

[0022] In the diagram: 100, load-bearing mechanism; 101, sheet metal cabinet; 102, protective door; 103, heat dissipation vent; 200, drive mechanism; 201, mounting plate; 202, fixing plate; 203, fixing frame; 204, fixing sleeve; 205, thermal expansion block; 206, sliding block; 207, drive rod; 208, spring; 209, transmission block; 210, ring; 211, fixing column; 212, connecting piece; 213, support shaft; 214, dustproof blade; 300, cooling mechanism; 301, first contact switch; 302, second contact switch; 303, permanent magnet synchronous motor; 304, connecting column; 305, first pulley; 306, belt; 307, second pulley; 308, rotating shaft; 309, impeller. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example

[0027] ReferenceFigures 1-5 This embodiment of the present invention provides an over-temperature load reduction device for a photovoltaic-storage inverter. When the temperature inside the sheet metal cabinet 101 is too high, the dustproof blades 214 will automatically open and the permanent magnet synchronous motor 303 will automatically drive the impeller 309 to rotate. After the load is reduced inside the sheet metal cabinet 101, the dustproof blades 214 will automatically close to protect the impeller 309, and the permanent magnet synchronous motor 303 will be automatically stopped.

[0028] The support structure 100 includes a sheet metal cabinet 101, a protective door 102 hinged to the outer surface of the sheet metal cabinet 101, and a number of heat dissipation vents 103 opened on the top of the sheet metal cabinet 101.

[0029] It should be noted that the sheet metal cabinet 101 is used to house the photovoltaic and energy storage inverter. Since hot air has a low density, it will float due to buoyancy. The heat dissipation vent 103 on the top of the sheet metal cabinet 101 can effectively exhaust it.

[0030] The drive mechanism 200 includes a mounting plate 201 fixedly connected to the inner surface of the sheet metal cabinet 101, a fixing plate 202 fixedly installed on the inner wall of the sheet metal cabinet 101 and used in conjunction with the mounting plate 201, a fixing frame 203 fixedly connected to the top of the sheet metal cabinet 101, a fixing sleeve 204 fixedly installed on the inner surface of the fixing frame 203, a thermal expansion block 205 disposed in the inner cavity of the fixing sleeve 204, a sliding block 206 slidably disposed on the inner wall of the thermal expansion block 205, and a fixedly connected outer surface of the sliding block 206. The surface includes a drive rod 207, a spring 208 sleeved on the outer surface of the drive rod 207, a transmission block 209 hinged to the through end of the drive rod 207, a ring 210 fixedly connected to the outer end face of the transmission block 209, several fixed posts 211 arranged in a circumferential array on the outer surface of the ring 210, a connecting piece 212 slidably sleeved on the outer surface of the fixed post 211, a support shaft 213 fixedly connected to the bottom of the connecting piece 212, and a dustproof blade 214 fixedly sleeved on the through end of the support shaft 213.

[0031] It should be noted that both the fixing frame 203 and the fixing sleeve 204 are made of copper with good heat absorption properties, which ensures that the heat inside the sheet metal cabinet 101 can be transferred to the thermal expansion block 205. The thermal expansion block 205 is made of copper-based shape memory alloy, which can expand linearly with the increase of temperature and can quickly recover after cooling.

[0032] And a cooling mechanism 300 installed on the top of the sheet metal cabinet 101 and used in conjunction with the dustproof blades 214.

[0033] It should also be noted that when the internal temperature of the sheet metal cabinet 101 is too high, the thermal expansion block 205 will expand to a size that can drive the cooling mechanism 300.

[0034] Specifically, the outer surface of the drive rod 207 slides in contact with the inner surface of the fixed sleeve 204, and the fixed post 211 is fixedly connected to the bottom of the ring 210.

[0035] Specifically, the connecting piece 212 limits the fixed column 211, allowing the ring 210 to rotate by the linear movement of the drive rod 207, and then the fixed column 211 rotates by the cooperation between the fixed column 211 and the connecting piece 212.

[0036] Furthermore, the outer surface of the support shaft 213 is in rotatable contact with the inner surface of the mounting plate 201, and the through end of the support shaft 213 is fixedly mounted on the inner surface of the mounting plate 202 by a bearing.

[0037] Preferably, the cooling mechanism 300 includes a first contact switch 301 fixedly installed on the outer surface of the sliding block 206, a second contact switch 302 fixedly installed on the inner wall of the fixing sleeve 204 and used in conjunction with the first contact switch 301, and a permanent magnet synchronous motor 303 adapted to be installed on the top of the sheet metal cabinet 101.

[0038] It should be explained that when the first contact switch 301 moves to the position of contacting the second contact switch 302, the permanent magnet synchronous motor 303 is automatically powered on. When the first contact switch 301 moves to the position of disengaging from the second contact switch 302, the permanent magnet synchronous motor 303 is automatically powered off.

[0039] It should be noted that the cooling mechanism 300 also includes a connecting column 304 fixedly connected to the output end of the permanent magnet synchronous motor 303 via a coupling, a first pulley 305 fixedly sleeved on the outer surface of the connecting column 304, a belt 306 sleeved on the outer surface of the first pulley 305, and a second pulley 307 sleeved on the inner surface of the other end of the belt 306.

[0040] Furthermore, the cooling mechanism 300 also includes a rotating shaft 308 fixedly connected to the inner surface of the second pulley 307, and an impeller 309 fixedly sleeved on the through end of the rotating shaft 308 and used in conjunction with the dustproof blades 214.

[0041] Furthermore, when the dustproof blade 214 is closed, it can form a sealed barrel with the mounting plate 201 and the fixed plate 202, thereby completely surrounding the impeller 309.

[0042] Specifically, the outer surface of the rotating shaft 308 is in rotatable contact with the inner surface of the mounting plate 201, and the through end of the rotating shaft 308 is fixedly mounted on the inner surface of the fixed plate 202 by a bearing.

[0043] When the internal temperature of the sheet metal cabinet 101 is too high during use, the thermal expansion block 205 deforms and squeezes the sliding block 206, causing the sliding block 206 to drive the drive rod 207 to move synchronously with the first contact switch 301, and apply pressure to the spring 208. Through the limiting of the fixed column 211 by the connecting piece 212, the ring 210 can drive the fixed column 211 to rotate through the linear movement of the drive rod 207. Then, through the cooperation of the fixed column 211 and the connecting piece 212, the support shaft 213 and the dustproof blade 214 rotate synchronously.

[0044] As the dustproof blades 214 are fully opened, the first contact switch 301 moves synchronously to the position of contacting the second contact switch 302, energizing the permanent magnet synchronous motor 303. The permanent magnet synchronous motor 303, in conjunction with the connecting column 304, drives the first pulley 305 to rotate. Then, through the cooperation of the first pulley 305 and the belt 306, the second pulley 307 and the rotating shaft 308 rotate synchronously. The rotating shaft 308 drives the impeller 309 to rotate, and the airflow generated by the rotation of the impeller 309 cools the interior of the sheet metal cabinet 101.

[0045] After the internal load of the sheet metal cabinet 101 is reduced: the shape of the thermal expansion block 205 is restored, and the sliding block 206 and the dustproof blade 214 are reset by the reaction force of the spring 208, and the permanent magnet synchronous motor 303 is powered off and stopped.

[0046] In summary, through the cooperation of the drive mechanism 200 and the cooling mechanism 300, not only can the dustproof blades 214 automatically open when the temperature inside the sheet metal cabinet 101 is too high, and the permanent magnet synchronous motor 303 be automatically controlled to drive the impeller 309 to rotate, thereby rapidly increasing the airflow speed, improving heat dissipation efficiency, and preventing the inverter from overheating; it can also automatically close the dustproof blades 214 to protect the impeller 309 after the load inside the sheet metal cabinet 101 is reduced, and at the same time automatically control the permanent magnet synchronous motor 303 to stop, so as to avoid unnecessary energy consumption and prevent dust from accumulating on the surface of the impeller 309.

[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An over-temperature load easing device for a photovoltaic-storage inverter, characterized in that: The utility model relates to a bearing mechanism (100) including sheet metal cabinet (101), hinge in the outer surface of sheet metal cabinet (101) protective door (102) and a plurality of heat dissipation port (103) of setting up in the top of sheet metal cabinet (101), Drive mechanism (200) including fixedly connected in the inner surface of sheet metal cabinet (101) mounting disc (201), fixedly installed in the inner wall of sheet metal cabinet (101) and cooperate mounting disc (201) use fixed disc (202), fixedly connected in the top of sheet metal cabinet (101) fixed frame (203), fixedly installed in the inner surface of fixed frame (203) fixed sleeve (204), set in the inner chamber of fixed sleeve (204) thermal expansion block (205), slidingly set in the inner wall of thermal expansion block (205) sliding block (206), fixedly connected in the outer surface of sliding block (206) drive rod (207), spring (208) of sleeve set in the outer surface of drive rod (207), transmission block (209) of hinge in the through -end of drive rod (207), circular ring (210) of fixedly connected in the outer end surface of transmission block (209), a plurality of circumferential array distribution in the outer surface of circular ring (210) fixed column (211), slidingly sleeve set in the outer surface of fixed column (211) connecting piece (212), fixedly connected in the bottom of connecting piece (212) support shaft (213) and fixed sleeve set in the through -end of support shaft (213) dust -proof blade (214), And cooling mechanism (300) set in the top of sheet metal cabinet (101) and cooperate dust -proof blade (214) use. The outer surface of the drive rod (207) is in sliding contact with the inner surface of the fixed sleeve (204), and the fixed column (211) is fixedly connected to the bottom of the circular ring (210).

2. The over-temperature derating device for a light storage inverter according to claim 1, characterized in that: The outer surface of the support shaft (213) is in rotational contact with the inner surface of the mounting disc (201), and the through -end of the support shaft (213) is fixedly installed on the inner side surface of the fixed disc (202) through a bearing.

3. The over-temperature derating device for a light storage inverter according to claim 2, characterized in that: The cooling mechanism (300) includes a first contact switch (301) fixedly installed on the outer surface of the sliding block (206), a second contact switch (302) fixedly installed on the inner wall of the fixed sleeve (204) and cooperating with the first contact switch (301), and a permanent magnet synchronous motor (303) adaptively installed on the top of the sheet metal cabinet (101).

4. The over-temperature derating device for a light storage inverter according to claim 3, characterized in that: The cooling mechanism (300) further includes a connecting column (304) fixedly connected to the output end of the permanent magnet synchronous motor (303) through a shaft coupling, a first belt pulley (305) fixedly sleeved on the outer surface of the connecting column (304), a belt (306) sleeved on the outer surface of the first belt pulley (305), and a second belt pulley (307) sleeved on the inner surface of the other end of the belt (306).

5. The over-temperature derating device for a light storage inverter according to claim 4, characterized in that: ​ 6. The over-temperature derating device for a light storage inverter according to claim 5, characterized in that: The cooling mechanism (300) further comprises a rotating shaft (308) fixedly connected to the inner surface of the second belt pulley (307), and an impeller (309) fixedly sleeved on the penetrating end of the rotating shaft (308) and matched with the dustproof blade (214).

7. The over-temperature derating device for a light storage inverter according to claim 6, characterized in that: The outer surface of the rotating shaft (308) is in rotating contact with the inner surface of the mounting disc (201), and the penetrating end of the rotating shaft (308) is fixedly installed on the inner side surface of the fixing disc (202) through a bearing.

Images