A power supply housing suitable for series-parallel functions

Abstract

The present invention discloses a power supply housing suitable for series-parallel functions, which is exquisitely designed and practical. There is a detachable top cover on the top of the housing, and a loading plate and a temperature control component are arranged inside. The temperature control component includes a side panel assembly, front and rear baffles, which form a battery cell loading space, and is equipped with a push-up mechanism to ensure the stability of the battery cell. The unique cover plate assembly cooperates with the inserted thermal connection plate and thermal conductive plug, the elastic edging sleeve, and the jacks in the thermal conductive plug for inserting temperature sensors and heating rods, so that the battery cell can be effectively thermally managed. The vent design on the top cover enhances the heat dissipation effect and also has a good dustproof effect. The overall structure not only facilitates the installation and disassembly of the battery cell, but also ensures the stability and efficiency of the power supply under different temperature conditions, and can simultaneously meet the dual functional requirements of heat dissipation and dustproof of the battery cell and improved low-temperature charging and discharging performance.

Description

Technical Field

[0001] The invention relates to the technical field of power supply housings, and in particular to a power supply housing suitable for series-parallel functions. Background Art

[0002] Peripheral power supplies, including backup power supplies and external power supplies, are designed to provide emergency power for various electrical devices. In order to ensure efficient and appropriate power supply, these power supplies usually adopt a series-parallel design of battery cells and intelligent power distribution through control circuits. However, this design faces several key problems in practical applications.

[0003] First, when the cells are used in series, some cells may generate excessive heat during the charging and discharging process due to differences in capacity and internal resistance between the cells. This requires that the housing of the external power supply must have an effective heat dissipation structure and related components to ensure that the cells can dissipate heat efficiently. At the same time, these heat dissipation designs must also take into account dust-proof functions to prevent excessive dust from entering the power supply housing.

[0004] Secondly, in order to ensure that each battery cell operates at normal operating temperature and reduce the performance difference between batteries, the housing of the external power supply must also have functional components that improve low-temperature charging and discharging performance. Because in a low-temperature environment, the difference between batteries will be magnified, and the storage capacity will also be reduced, thus affecting the overall performance of the external power supply.

[0005] Currently, there is no power supply housing on the market that can simultaneously meet the dual functional requirements of heat dissipation and dust prevention of battery cells and improved low-temperature charging and discharging performance. Therefore, developing a power supply housing with these functions is an important direction of current technological development. Summary of the invention

[0006] The object of the present invention is to provide a power supply housing suitable for series-parallel functions to solve the problems described in the background art.

[0007] The technical solution of the present invention is achieved in this way:

[0008] A power supply housing suitable for series-parallel functions comprises a housing with an opening at the top, a detachable cover on the top of the housing is provided with a top cover, a loading plate for installing electrical components is provided on the inner wall of the housing, and a temperature control component is also provided on the inner bottom wall of the housing, the temperature control component comprises two side plate assemblies symmetrically fixed on the bottom wall of the housing, and a front baffle and a rear baffle oppositely fixed on the bottom wall of the housing, the front baffle and the rear baffle are arranged between the two side plate assemblies, the two side plate assemblies, the front baffle and the rear baffle are jointly enclosed to form a loading space for loading electric cores, the side plate assemblies and the rear baffle are also provided with a pushing mechanism for pushing up the electric cores, the temperature control component also comprises a cover plate assembly arranged on the top of the side plate assembly, the cover plate assembly comprises a bottom plate, a side frame is provided at the edge of the upper end of the bottom plate, and the top of the side frame protrudes outward to form an annular top frame The upper end of the top frame is provided with an annular soft pad covering the top surface of the top frame, and the bottom of the top cover is against the soft pad when the top cover is arranged on the shell, and the cover plate assembly is detachably mounted on the top of the side plate assembly through the top frame, and a plurality of slots arranged at intervals are also provided on the bottom plate, and the temperature control assembly also includes a plurality of heat-conducting connecting plates detachably mounted on the upper end of the bottom plate for sealing the slots, and the number of heat-conducting connecting plates is the same as the number of slots, and a heat-conducting plug is fixedly provided at the bottom of the heat-conducting connecting plate, and an elastic edging sleeve is also provided on the edge of the heat-conducting plug, and a plurality of fins arranged at intervals are also provided on the top of the heat-conducting connecting plate, and at least two jacks connected to the heat-conducting plug are downwardly opened on the upper end surface of the heat-conducting connecting plate, and two rows of vents are also provided on the top cover, each row of vents includes a plurality of vents, and the slots are arranged between the two rows of vents.

[0009] When using the above scheme, multiple series-parallel cells are placed in the loading space at intervals, and the series-parallel cells are electrically connected to the electrical components on the loading board. Then, the cover plate assembly is installed so that the slot is aligned with the interval space between the cells. Then, an appropriate amount of thermal conductive silicone grease is applied on the surface where the thermal conductive plug contacts the motor, and the thermal conductive plug is inserted into the slot so that the thermal conductive plug is sandwiched between the two cells. Then, the cell is pushed up by the push-up mechanism on the side plate assembly and the rear baffle so that the cell clamps the thermal conductive plug and prevents the cell from moving in the loading space. Then, the thermal conductive connecting plate and the bottom plate are fastened and connected. The temperature sensor and the heating rod are respectively inserted into the two sockets of the thermal conductive connecting plate and the thermal conductive plug, and the gap between the temperature sensor and the heating rod and the socket can be filled with thermal conductive silicone grease. The wires of the temperature sensor and the heating rod are electrically connected to the electrical components on the loading board through the top frame. Finally, the fan of the top cover is electrically connected to the electrical components, and the top cover is closed.

[0010] When the battery cell is charged and discharged at normal temperature, the heat generated by the battery cell is transferred to the thermal plug through the thermal grease, and the temperature is measured by the temperature sensor inserted in the thermal plug. When the temperature measured by the temperature sensor exceeds the preset value, the electrical component controls the fan to turn on, and the fan in one row of vents guides the external cooling gas into the cover assembly, passes through the fins on the thermal connector, and then is guided out from another row of vents to cool the fins. The heat conduction path is battery cell-thermal grease-thermal plug-thermal connector-fin-cooling gas.

[0011] When the battery cell is charged and discharged at low temperature, if the temperature measured by the temperature sensor is lower than the preset threshold, the electrical component controls the heating rod to heat it, and the heat conduction path is heating rod-thermal plug-thermal grease-battery cell. By heating the battery cell, the battery cell temperature is increased. Even if the battery cell temperature may not be restored to normal temperature (the temperature recovery effect is affected by three factors, such as ambient temperature, heating rod power, and battery cell group capacity design), it can be improved compared to the original low temperature conditions, thereby improving the charging and discharging performance of the battery cell in low temperature environment.

[0012] By providing a push-up mechanism, the device space can accommodate more battery cells with different external specifications, and ensure that the battery cell can clamp the thermal conductive plug, so that the battery cell is in full contact with the thermal conductive silicone grease.

[0013] By setting up the elastic edge sleeve, the thermal grease can be effectively locked on the surface of the thermal conductive plug to prevent the thermal grease from leaking. At the same time, the elastic edge sleeve can avoid the rigid connection between the battery cell and the thermal conductive plug, and provide deformation space for the battery cell when it expands slightly due to heat during charging and discharging, effectively protecting the battery cell.

[0014] By providing a soft pad, the bottom of the top cover can be fully in contact with the cover assembly, thereby sealing most of the gap between the top cover and the top frame, so that the cooling airflow only flows in the cover assembly, preventing the cooling airflow from bringing dust out of the cover assembly, while also providing conditions for the wires of the fan, temperature sensor and heating rod to pass through, preventing the wires from being pinched.

[0015] A further technical solution is that the side panel assembly includes a side support plate and a top support plate, the side support plate is vertically fixed on the bottom wall of the shell, the top support plate is fixed on the top of the side support plate, the two side support plates of the two side panel assemblies are arranged parallel to each other, the top support plate and the side support plates are perpendicular to each other, the top support plate is provided with a plurality of first threaded holes penetrating the upper and lower end surfaces of the top support plate, the top surrounding frame is provided with a plurality of first through holes penetrating the upper and lower end surfaces of the top surrounding frame, the number of the first through holes and the first threaded holes are the same and the positions correspond one to one, the top surrounding frame is screwed into the first threaded hole after the screw passes through the first through hole, and the pushing mechanism is arranged on the side support plate.

[0016] When using the above solution, the outline of the loading space is limited by setting parallel side support plates to make it easier to limit the position of the battery cell, and the disassembly and assembly of the top frame and the top support plate are facilitated by setting the first through hole and the first threaded hole.

[0017] A further technical solution is that the ejection mechanism includes a plurality of arched pieces fixedly mounted on the side support plates and the rear baffle, the arched pieces being arranged on the side of the side support plates and the rear baffle facing away from the loading space, the ejection mechanism also includes a plurality of adjusting bolts threadedly mounted through the arched pieces, the number of the adjusting bolts being the same as the number of the arched pieces, the ends of the adjusting bolts being threadedly mounted through the side support plates and the rear baffle, and the ends of the adjusting bolts passing through the side support plates and the rear baffle and being fixed with a ejection block.

[0018] When the above solution is used, the cooperation between the arched sheet and the side support plate and the rear baffle can provide two support points for the adjusting bolts while reducing the thickness of the side support plate and the rear baffle, so that the adjusting bolts can be more stably threaded and penetrated in the arched sheet, the side support plate and the rear baffle, which not only provides a stable structure but also reduces the weight of the power supply housing. When it is necessary to tighten the battery cell, the adjusting bolt is turned, the adjusting bolt pushes the top block, the top block pushes the battery cell, the top blocks on the two side support plates clamp the battery cell relatively, and the top block on the rear baffle and the front baffle cooperate to clamp the battery cell.

[0019] A further technical solution is that an arc-shaped wind guide wall gradually transitioning from the top of the side frame to the bottom plate is provided at the junction of the front end of the bottom plate and the side frame, and an arc-shaped wind guide wall gradually transitioning from the bottom plate to the top of the side frame is provided at the junction of the rear end of the bottom plate and the side frame. The front and rear widths of the wind guide wall are the same as the front and rear widths of the vent, and the vent is located just above the wind guide wall.

[0020] When using the above solution, by setting the width and position of the wind guide wall and the vent, the cooling airflow driven by the fan enters the cover assembly and is guided by the wind guide wall to flow through the entire cover assembly from front to back with low resistance.

[0021] A further technical solution is that a second threaded hole penetrating the upper and lower end surfaces of the bottom plate is opened on the bottom plate on both sides of the slot, and a long hole matching the second threaded hole is opened on the thermal conductive connecting plate, and the thermal conductive connecting plate is screwed into the second threaded hole by passing screws through the long hole.

[0022] When the above solution is used, by providing the elongated hole and the second threaded hole, the convenience of disassembling and assembling the heat-conducting connecting plate can be improved, and the heat-conducting connecting plate can be easily fixed after moving back and forth following the heat-conducting plug.

[0023] A further technical solution is that a power input interface and a power output interface are provided on the side wall of the shell.

[0024] A further technical solution is that a fan is provided in the vent.

[0025] The beneficial effects of the present invention are:

[0026] 1. Efficient thermal management: The solution achieves efficient thermal management of the battery cell through the design of thermal conductive plugs, thermal conductive silicone grease, temperature sensors and heating rods. Whether in normal temperature or low temperature environment, the operating temperature of the battery cell can be effectively controlled, thereby improving its charging and discharging performance.

[0027] 2. Strong adaptability: The design of the ejection mechanism enables the device to adapt to battery cells of different specifications, and ensures close contact between the battery cells and the thermal conductive plugs, thereby optimizing the heat conduction effect.

[0028] 3. Elastic edging design: This design effectively locks the thermal grease to prevent it from losing, while allowing the battery cell to expand slightly during the charging and discharging process, protecting the battery cell from damage by rigid connections.

[0029] 4. Good dustproof performance: The soft cushion design not only ensures full contact between the top cover and the cover assembly, but also provides good sealing to prevent the entry of dust, while also protecting the wires from being pinched.

[0030] 5. Stable and lightweight structure: The coordinated design of the arched piece, the side support plate and the rear baffle not only provides stable support for the adjusting bolts, but also realizes the lightweight of the overall structure.

[0031] 6. Optimized airflow design: By setting up air guide walls and reasonable vents, low-resistance flow of cooling air is achieved in the cover assembly, thereby improving heat dissipation efficiency.

[0032] 7. Easy to disassemble and assemble: The long hole and the second threaded hole design on the thermal connection plate make the disassembly and assembly of the thermal connection plate more convenient, and easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a general schematic diagram of the present invention;

[0034] Figure 2 It is an internal schematic diagram of the present invention;

[0035] Figure 3 It is a schematic diagram of the internal top view of the present invention;

[0036] Figure 4 is a three-dimensional schematic diagram of a temperature control component;

[0037] Figure 5 This is an exploded view of the components of the temperature control assembly;

[0038] Figure 6 It is a schematic diagram of the cooperation between the heat conductive insert and the elastic edge sleeve;

[0039] Figure 7 is a schematic diagram of a side panel assembly;

[0040] Figure 8 A top view of the side panel assembly.

[0041] In the figure, 1, shell, 101, top cover, 2, vent, 3, fan, 4, loading plate, 5, temperature control assembly, 6, side plate assembly, 601, side support plate, 602, top support plate, 603, first threaded hole, 7, cover plate assembly, 701, side frame, 702, top frame, 703, bottom plate, 704, slot, 8, thermal conductive connecting plate, 9, first through hole, 10, fin, 11, long strip hole, 12, second threaded hole, 13, adjusting bolt, 14, jack, 15, air guide wall, 16, arched piece, 17, rear baffle, 18, top block, 19, front baffle, 20, thermal conductive insert, 21, elastic edging sleeve. DETAILED DESCRIPTION

[0042] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0043] See also Figures 1 to 8 A power supply housing 1 suitable for series-parallel functions comprises a housing 1 with an opening at the top, a detachable cover 101 is provided on the top of the housing 1, and a loading plate 4 for mounting electrical components is provided on the inner wall of the housing 1.

[0044] It should be specially noted that the present invention mainly relates to the coordination between the temperature control component 5 inside the power supply housing 1 and the housing 1 and the top cover 101. When the coordination conditions are met, appropriate deformation of the outlines of the housing 1 and the top cover 101 or the addition of other structures is permitted. Therefore, various overall designs of the housing 1 and the top cover 101 in the prior art can be applied to the housing 1 and the top cover 101 in the present invention. In addition, the power input interface and the power output interface of the external power supply may be arranged at any part of the housing 1, or may be arranged on the top cover 101. The designs of these power input interfaces and power output interfaces are conventional designs. It is assumed here that the housing 1 includes the power input interface and the power output interface, and their structures and types are no longer described in detail.

[0045] It should be noted that the electrical components in the present invention include but are not limited to rectifiers for AC-DC, transformers, filter circuits, charging control circuits, PLC controllers or STM32 microcontrollers for controlling series-parallel functions, temperature measurement functions and heating functions, and converters for DC-DC. These electrical components are common additional components in external power supplies, but do not belong to the power supply housing 1 itself, and their types and principles will not be described in detail here.

[0046] A temperature control assembly 5 is also provided on the inner bottom wall of the shell 1 , and the temperature control assembly 5 includes two side plate assemblies 6 symmetrically fixed on the bottom wall of the shell 1 , and a front baffle 19 and a rear baffle 17 oppositely fixed on the bottom wall of the shell 1 .

[0047] Specifically, the side plate assembly 6 includes a side support plate 601 and a top support plate 602. The side support plate 601 is vertically fixed on the bottom wall of the housing 1, and the top support plate 602 is fixed on the top of the side support plate 601. The two side support plates 601 of the two side plate assemblies 6 are arranged parallel to each other, and the top support plate 602 is perpendicular to the side support plates 601. The front baffle 19 and the rear baffle 17 are arranged between the two side plate assemblies 6.

[0048] The two side panel assemblies 6 , the front baffle plate 19 and the rear baffle plate 17 together form a loading space for loading battery cells.

[0049] The side plate assembly 6 and the rear baffle plate 17 are also provided with a pushing mechanism for pushing out the battery cells.

[0050] Specifically, the push-up mechanism includes a plurality of arched pieces 16 fixedly mounted on the side support plate 601 and the rear baffle plate 17. The arched pieces 16 are arranged on the side of the side support plate 601 and the rear baffle plate 17 away from the loading space. The arched pieces 16 on the two side support plates 601 are arranged symmetrically one by one. The push-up mechanism also includes a plurality of adjusting bolts 13 threadedly mounted in the arched pieces 16. The number of the adjusting bolts 13 is the same as the number of the arched pieces 16. The ends of the adjusting bolts 13 are threadedly mounted in the side support plate 601 and the rear baffle plate 17. The ends of the adjusting bolts 13 pass through the side support plate 601 and the rear baffle plate 17 and are fixedly mounted with a top block 18.

[0051] The temperature control assembly 5 also includes a cover assembly 7 disposed on the top of the side plate assembly 6, and the cover assembly 7 includes a rectangular bottom plate 703, and a rectangular side frame 701 is disposed at the upper edge of the bottom plate 703. The top of the side frame 701 protrudes outward to form a rectangular top frame 702. The cover assembly 7 is detachably mounted on the top of the side plate assembly 6 through the top frame 702.

[0052] Specifically, the top support plate 602 is provided with a plurality of first threaded holes 603 penetrating the upper and lower end surfaces of the top support plate 602, and the top surrounding frame 702 is provided with a plurality of first through holes 9 penetrating the upper and lower end surfaces of the top surrounding frame 702. The number of the first through holes 9 and the first threaded holes 603 are the same and the positions correspond one to one. The top surrounding frame 702 is screwed into the first threaded holes 603 after screws pass through the first through holes 9.

[0053] The junction between the front end of the bottom plate 703 and the side frame 701 is also provided with an arc-shaped wind guide wall 15 that gradually transitions from the top of the side frame 701 to the bottom plate 703, and the junction between the rear end of the bottom plate 703 and the side frame 701 is also provided with an arc-shaped wind guide wall 15 that gradually transitions from the bottom plate 703 to the top of the side frame 701.

[0054] The upper end of the top frame 702 is provided with an annular cushion covering the top surface of the top frame 702. When the top cover 101 is covered on the housing 1, the bottom of the top cover 101 abuts against the cushion.

[0055] Preferably, the cushion is made of soft foam material.

[0056] The bottom plate 703 is also provided with a plurality of slots 704 arranged at intervals, and the slots 704 extend along the left and right sides to the side frame 701 .

[0057] The temperature control assembly 5 further includes a plurality of heat-conducting connecting plates 8 detachably mounted on the upper end of the bottom plate 703 and used to cover the slots 704 . The number of the heat-conducting connecting plates 8 is the same as the number of the slots 704 .

[0058] Specifically, the bottom plate 703 on both sides of the slot 704 is provided with a second threaded hole 12 penetrating the upper and lower end surfaces of the bottom plate 703, and the heat-conducting connecting plate 8 is provided with a long hole 11 matching the second threaded hole 12, and the heat-conducting connecting plate 8 is screwed into the second threaded hole 12 by passing screws through the long hole 11.

[0059] Preferably, the heat-conducting connecting plate 8 is made of aluminum.

[0060] A rectangular heat-conducting insert 20 made of aluminum is fixedly disposed at the bottom of the heat-conducting connecting plate 8 , and an elastic edging sleeve 21 is sleeved around the edge of the heat-conducting insert 20 .

[0061] Preferably, the elastic edging sleeve 21 is made of silicone material.

[0062] A plurality of fins 10 are also provided at intervals on the top of the heat-conducting connecting plate 8 . The fins 10 are made of aluminum and extend in the front-to-back direction.

[0063] The upper end surface of the heat-conducting connecting plate 8 is also provided with two insertion holes 14 which are connected to the heat-conducting plug 20 and are used for inserting the temperature sensor and the heating rod.

[0064] Two rows of vents 2 are also provided on the top cover 101, each row of vents 2 includes a plurality of vents 2, the front-to-back width of the wind guide wall 15 is the same as the front-to-back width of the vents 2, the vents 2 are located just above the wind guide wall 15, the slots 704 are located between the two rows of vents 2, and fans 3 are provided in the vents 2. The fans 3 in the front row blow air inwards, and the fans 3 in the rear row draw air outwards.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power supply housing suitable for series-parallel function, comprising a housing with an opening at the top, a detachable cover on the top of the housing provided with a top cover, and a loading plate for mounting electrical components provided on the inner wall of the housing, characterized in that: A temperature control assembly is also provided on the inner bottom wall of the shell, and the temperature control assembly includes two side plate assemblies symmetrically fixed on the bottom wall of the shell, and a front baffle and a rear baffle fixed on the bottom wall of the shell oppositely, the front baffle and the rear baffle are arranged between the two side plate assemblies, the two side plate assemblies, the front baffle and the rear baffle together enclose a loading space for loading the battery cells, and the side plate assemblies and the rear baffle are also provided with a pushing mechanism for pushing the battery cells, the temperature control assembly also includes a cover plate assembly arranged on the top of the side plate assembly, the cover plate assembly includes a bottom plate, a side frame is arranged at the edge of the upper end of the bottom plate, and the top of the side frame protrudes outward to form an annular top frame The upper end of the top frame is provided with an annular soft cushion covering the top surface of the top frame. When the top cover is arranged on the shell, the bottom of the top cover abuts against the soft cushion. The cover plate assembly is detachably mounted on the top of the side plate assembly through the top frame. The bottom plate is also provided with a plurality of slots arranged at intervals. The temperature control assembly also includes a plurality of heat-conducting connecting plates detachably mounted on the upper end of the bottom plate for sealing the slots. The number of heat-conducting connecting plates is the same as the number of slots. A heat-conducting plug is fixedly arranged at the bottom of the heat-conducting connecting plate. An elastic edging sleeve is also provided on the edge of the heat-conducting plug. A plurality of fins arranged at intervals are also provided on the top of the heat-conducting connecting plate. The upper end surface of the heat-conducting connecting plate At least two jacks are provided downwards to pass into the heat conducting plugs, and two rows of vents are provided on the top cover, each row of vents includes a plurality of vents, and the slot is provided between the two rows of vents. The side panel assembly includes a side support plate and a top support plate, the side support plate is vertically fixed on the bottom wall of the shell, the top support plate is fixed on the top of the side support plate, the two side support plates of the two side panel assemblies are arranged parallel to each other, the top support plate and the side support plates are perpendicular to each other, the top support plate is provided with a plurality of first threaded holes penetrating the upper and lower end surfaces of the top support plate, and the top enclosure frame is provided with a plurality of first through holes penetrating the upper and lower end surfaces of the top enclosure frame, The number of the first through holes and the first threaded holes are the same and their positions correspond one to one. The top frame is screwed into the first threaded holes after passing the screws through the first through holes. The pushing mechanism is arranged on the side support plate. The pushing mechanism includes a plurality of arched pieces fixedly arranged on the side support plate and the rear baffle. The arched pieces are arranged on the side of the side support plate and the rear baffle away from the loading space. The pushing mechanism also includes a plurality of adjusting bolts screwed and passed through the arched pieces. The number of the adjusting bolts is the same as the number of the arched pieces. The ends of the adjusting bolts are screwed and passed through the side support plate and the rear baffle, and the ends of the adjusting bolts pass through the side support plate and the rear baffle and are fixed with a top block.

2. A power supply housing suitable for series-parallel functions according to claim 1, characterized in that: An arc-shaped wind guide wall gradually transitioning from the top of the side frame to the bottom plate is also provided at the junction of the front end of the bottom plate and the side frame, and an arc-shaped wind guide wall gradually transitioning from the bottom plate to the top of the side frame is also provided at the junction of the rear end of the bottom plate and the side frame. The front and rear widths of the wind guide wall are the same as the front and rear widths of the vent, and the vent is located just above the wind guide wall.

3. A power supply housing suitable for series-parallel functions according to claim 1, characterized in that: The bottom plates on both sides of the slot are provided with second threaded holes penetrating the upper and lower end surfaces of the bottom plates, and the heat-conducting connecting plate is provided with long holes matching the second threaded holes, and the heat-conducting connecting plate is screwed into the second threaded holes through screws passing through the long holes.

4. A power supply housing suitable for series-parallel functions according to claim 1, characterized in that: A power input interface and a power output interface are arranged on the side wall of the shell.

5. A power supply housing suitable for series-parallel connection according to claim 2, characterized in that: A fan is arranged in the vent.

Images