Embedded power supply distribution box with ventilation and noise reduction functions

Abstract

The utility model discloses a ventilation and noise reduction embedded power supply distribution box, which comprises a box body embedded into a wall body, the lower end part of a panel of the box body is provided with an air inlet, the upper end part of the panel of the box body is provided with an air outlet, the air outlet and the air inlet are respectively provided with a sound absorption shutter, and an inner cavity of the box body is respectively provided with a first mounting plate and a second mounting plate. The first mounting plate is located at the air inlet, and a gap is reserved between the first mounting plate and the inner side of the bottom plate of the box body to form an air inlet silencing cavity; the second mounting plate is located at the air outlet, and a gap is reserved between the second mounting plate and the inner side of the top plate of the box body to form an exhaust silencing cavity; ventilation holes are formed in the first mounting plate and the second mounting plate, an exhaust fan is mounted on the ventilation hole of the second mounting plate, so that the exhaust silencing cavity and the air inlet silencing cavity are respectively communicated with the inner cavity of the box body, and flame-retardant sound-absorbing materials are arranged on the inner side walls of the exhaust silencing cavity and the air inlet silencing cavity. The power distribution box is simple in structure, ensures cooling of electrical components in the box body, and reduces noise.

Description

Technical Field

[0001] The utility model belongs to embedded electrical equipment, in particular to an embedded power distribution box with ventilation and noise reduction. Background Art

[0002] With the rapid development of power electronics technology and devices, more and more power and electronic devices are used in terminal power distribution system diagrams, and in order to reduce the space occupied by power and electronic devices, embedded structures are mostly used. For power boxes, distribution boxes, and control boxes embedded in the walls of buildings, because the five sides of the box are completely in close contact with the wall, the heat dissipation effect is poor and normal ventilation is impossible, causing the temperature inside the box to exceed the allowable operating temperature of the power electronic device, resulting in the risk of the device shutting down or operating at a reduced capacity. The existing method uses the method of adding fans, but the fan will make noise when working, thus affecting people's normal production and life. How to solve the operation cooling of power electronic devices in terminal power distribution devices (power boxes, distribution boxes, control boxes), ensure the safe and reliable operation of the devices, and reduce noise is an issue that urgently needs to be considered and solved. Summary of the invention

[0003] The utility model aims to provide an embedded power distribution box with ventilation and noise reduction in view of the deficiencies in the prior art, which has a simple structure and can both reduce temperature and noise.

[0004] The technical solution adopted by the purpose of the utility model is:

[0005] A ventilation and noise reduction embedded power distribution box, comprising a box body embedded in a wall, an air inlet is provided at the lower end of a panel of the box body, and an air outlet is provided at the upper end, the air outlet and the air inlet are both provided with sound-absorbing louvers, and a first mounting plate and a second mounting plate are respectively installed in an inner cavity of the box body, the first mounting plate is located at the air inlet, and a spacing is left between the first mounting plate and the inner side of the bottom plate of the box body to form an air inlet silencer cavity; the second mounting plate is located at the air outlet, and a spacing is left between the second mounting plate and the inner side of the top plate of the box body to form an air exhaust silencer cavity; ventilation holes are provided on the first mounting plate and the second mounting plate, and an exhaust fan is installed on the ventilation holes of the second mounting plate, so that the exhaust silencer cavity and the air inlet silencer cavity are respectively connected to the inner cavity of the box body, and the inner side walls of the exhaust silencer cavity and the air inlet silencer cavity are both provided with flame-retardant sound-absorbing materials.

[0006] Furthermore, the box body, the first mounting plate and the second mounting plate are all made of metal heat-conducting plates.

[0007] Furthermore, the distance between the first mounting plate and the inner side of the bottom plate of the box body is 5 to 10 mm, and the distance between the second mounting plate and the inner side of the top plate of the box body is 5 to 10 mm.

[0008] Furthermore, it also includes a temperature sensor, which is arranged on the second mounting plate and is electrically connected to the exhaust fan.

[0009] Furthermore, the exhaust silencer cavity and the inlet silencer cavity are both provided with chamfers.

[0010] Furthermore, symmetrically arranged wire inlet knock-out holes are respectively provided on the bottom plate of the box body and the top plate of the box body.

[0011] Furthermore, the blades of the exhaust fan are horizontally mounted on the second mounting plate.

[0012] Furthermore, the inner side walls of the box are provided with flame retardant and sound absorbing materials.

[0013] Furthermore, the box body adopts a hollow double-layer structure.

[0014] The above technical solution has the following beneficial effects: The utility model has a simple structure. Through the optimized design of the power box, distribution box, and control box, a first mounting plate and a second mounting plate are arranged in the air inlet and exhaust port of the box. The exhaust fan of the second mounting plate extracts the hot air in the box to cool it down, ensuring the normal operation of the electrical components. The operating temperature in the box does not exceed the allowable operating temperature of the power electronic device. At the same time, through the exhaust silencer cavity and the air inlet silencer cavity, the inner wall of the cavity is provided with flame-retardant sound-absorbing material, and the air inlet and exhaust ports are provided with sound-absorbing louvers to absorb the noise generated by the exhaust fan when working, thereby reducing the overall noise. The thickness of the box can be made smaller, and the thickness requirement for the wall embedded in the wall is reduced.

[0015] A temperature sensor is added to monitor the temperature changes in the box, thereby controlling the operation of the exhaust fan. The exhaust fan is started only when the temperature monitored by the temperature sensor exceeds the preset temperature, which saves power consumption and reduces noise.

[0016] The box body adopts a hollow double-layer structure, which provides convenience for the construction, pre-embedding of the box body, installation, inspection and maintenance of equipment.

[0017] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of specific embodiment 1;

[0019] Figure 2 for Figure 1 Middle AA section view.

[0020] In the accompanying drawings, 1 is a box body, 2 is a panel, 3 is a back panel, 4 is a box door, 5 is an air inlet, 6 is an air outlet, 7 is a hinge, 8 is a ventilation hole, 9 is an exhaust fan, 10 is a chamfer, 11 is a wire inlet knock-out hole, 12 is a temperature sensor, and 13 is an electrical component. DETAILED DESCRIPTION Specific embodiment 1:

[0022] See also Figure 1 and Figure 2 As shown, a ventilation and noise reduction embedded power distribution box includes a box body 1 embedded in the wall, the lower end of the panel side of the box body 1 is provided with an air inlet, and the upper end is provided with an air outlet. In this specific embodiment: the box body 1 includes a panel 2, a back panel 3, a side panel, a bottom panel and a top panel, the back panel is embedded in the wall, the side panel, the bottom panel and the top panel can be partially or completely embedded in the wall, and a box door 4 is provided in the middle of the panel 2, the area of ​​the box door 4 is smaller than the area of ​​the back panel, and one side of the box door is hinged to the panel by a hinge 7. The air inlet is located at the lower end of the box door 4, and the air outlet 6 is located at the upper end of the box door. The air outlet 6 and the air inlet 5 are both provided with sound-absorbing louvers, and the sound propagation can be reduced by the sound-absorbing louvers. The inner cavity of the box body is respectively installed with a first mounting plate and a second mounting plate, and the box body, the first mounting plate and the second mounting plate are all made of metal heat-conducting plates. The first mounting plate is located at the air inlet, and a spacing is left between the first mounting plate and the inner side of the bottom plate of the box to form an air inlet silencer cavity; the second mounting plate is located at the air outlet, and a spacing is left between the second mounting plate and the inner side of the top plate of the box to form an exhaust silencer cavity; the spacing between the first mounting plate and the inner side of the bottom plate of the box is 5-10 mm, and the spacing between the second mounting plate and the inner side of the top plate of the box is 5-10 mm. Ventilation holes 8 are provided on both the first mounting plate and the second mounting plate, and an exhaust fan 9 is installed on the ventilation holes of the second mounting plate, so that the exhaust silencer cavity and the air inlet silencer cavity are respectively connected to the inner cavity of the box, and the hot air in the box is extracted by the exhaust fan, thereby realizing the cooling of the electrical components in the box. In this specific embodiment: the fan blades of the exhaust fan are horizontally arranged and installed on the second mounting plate, and the exhaust effect is better. The ventilation holes 8 are opened at the position where the electrical components are installed in the box, so that the cold air entering through the air inlet silencer cavity can directly and quickly flow through the electrical components to take away the heat generated by the electrical components 13, thereby realizing the effective and rapid cooling of the electrical components. The inner side walls of the exhaust silencer cavity and the inlet silencer cavity are provided with flame retardant sound absorbing materials, or the exhaust silencer cavity, the inlet silencer cavity, and the inner side walls of the box are provided with flame retardant sound absorbing materials, which can be sound absorbing flame retardant cotton. The flame retardant sound absorbing materials can absorb the noise generated by the exhaust fan 9 when it is working, thereby reducing the noise.

[0023] The exhaust silencer cavity and the inlet silencer cavity are both provided with chamfers 10, and the chamfers 10 can further attenuate noise, thereby reducing noise.

[0024] The bottom plate of the box body 1 and the top plate of the box body are respectively provided with symmetrically arranged incoming wire knock-out holes 11, and this structure is convenient for wiring and has the shortest distance between incoming and outgoing wires.

[0025] Possibly, it also includes a temperature sensor 12, which is arranged next to the exhaust fan 9 of the second mounting plate. The temperature sensor 12 is electrically connected to the exhaust fan 9, and the exhaust fan start-up temperature is preset. When the temperature sensor monitors that the temperature in the box reaches the preset exhaust fan start-up temperature, the exhaust fan starts.

[0026] Possibly, the box body 1 adopts a hollow double-layer structure, that is, the bottom, back plate, top plate and side plates of the box body are hollow structures.

[0027] The working principle of the utility model is as follows: cold air is sent in through the air inlet of the box, enters the box through the air inlet silencer cavity, flows through the electrical components to take away the heat of the electrical components, and finally the hot air is extracted by the exhaust fan, thereby achieving cooling. At the same time, due to the use of the exhaust silencer cavity and the air inlet silencer cavity, the inner walls of the exhaust silencer cavity and the air inlet silencer cavity are provided with flame retardant sound absorbing materials, and the air outlet and the air inlet are both provided with sound absorbing shutters, thereby reducing the noise generated by the exhaust fan when working.

Claims

1. A ventilation and noise reduction embedded power distribution box, comprising a box body embedded in a wall, characterized in that: An air inlet is provided at the lower end of the panel side of the box body, and an air outlet is provided at the upper end thereof, and the air outlet and the air inlet are both provided with sound-absorbing louvers, and a first mounting plate and a second mounting plate are respectively installed at the inner cavity of the box body, the first mounting plate is located at the air inlet, and a spacing is left between the first mounting plate and the inner side of the bottom plate of the box body to form an air inlet silencer cavity; the second mounting plate is located at the air outlet, and a spacing is left between the second mounting plate and the inner side of the top plate of the box body to form an air exhaust silencer cavity; ventilation holes are provided at the first mounting plate and the second mounting plate, and an exhaust fan is installed on the ventilation holes of the second mounting plate, so that the exhaust silencer cavity and the air inlet silencer cavity are respectively connected to the inner cavity of the box body, and the inner side walls of the exhaust silencer cavity and the air inlet silencer cavity are both provided with flame-retardant sound-absorbing materials.

2. The embedded power distribution box with ventilation and noise reduction according to claim 1, characterized in that: The box body, the first mounting plate and the second mounting plate are all made of metal heat-conducting plates.

3. The embedded power distribution box with ventilation and noise reduction according to claim 1 or 2, characterized in that: The distance between the first mounting plate and the inner side of the bottom plate of the box body is 5 to 10 mm, and the distance between the second mounting plate and the inner side of the top plate of the box body is 5 to 10 mm.

4. The embedded power distribution box with ventilation and noise reduction according to claim 1 is characterized in that: It also includes a temperature sensor, which is arranged on the second mounting plate and is electrically connected to the exhaust fan.

5. The embedded power distribution box with ventilation and noise reduction according to claim 1 is characterized in that: The exhaust silencer cavity and the inlet silencer cavity are both provided with chamfers.

6. The embedded power distribution box with ventilation and noise reduction according to claim 1, characterized in that: The bottom plate of the box body and the top plate of the box body are respectively provided with symmetrically arranged wire inlet knock-out holes.

7. The embedded power distribution box with ventilation and noise reduction according to claim 1 is characterized by: The fan blades of the exhaust fan are horizontally arranged and mounted on the second mounting plate.

8. The embedded power distribution box with ventilation and noise reduction according to claim 1, characterized in that: The inner side walls of the box are provided with flame retardant sound absorbing materials.

9. The embedded power distribution box with ventilation and noise reduction according to claim 1, 6 or 8, characterized in that: The box body adopts a hollow double-layer structure.

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