A ventilation and heat dissipation device

Abstract

The present invention belongs to the technical field of ventilation equipment, and relates to a ventilation and air exchange device for power transmission and distribution equipment. A ventilation and heat dissipation device includes a volute assembly; the volute assembly includes a fan assembly and a volute, the volute cover is outside the fan assembly, and an air outlet is provided at the lower part of the volute. The ventilation and heat dissipation device of the present invention adopts air inlet louvers, and the blades are overlapped to improve the waterproof performance; avoid the occurrence of air flow short circuit, improve the ventilation and heat dissipation efficiency; improve the space utilization rate; and reduce the ventilation and heat dissipation cost. The volute assembly adopts a mechanical self-sealing protective structure to improve safety and reliability; there is no need to be equipped with a fan device air valve, which reduces the ventilation and air exchange cost; and improves the protection level of the enclosure structure.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation equipment and relates to a ventilation and heat dissipation device for power transmission and distribution equipment. Background Art

[0002] The increase in the use and performance of various power distribution and power electronic equipment, and the large heat generation, have led to ventilation and heat dissipation problems that have always been a difficult problem restricting their development. The problems are mainly concentrated in the following aspects: due to limited space, the air inlets and outlets are often installed on the same panel, resulting in air flow short circuit; the protection level is getting higher and higher, and the use of filters has greatly reduced the actual air volume of the ventilation equipment; the unreasonable setting of the air inlet and outlet positions leads to low ventilation and heat dissipation efficiency, resulting in energy waste.

[0003] With the advancement of new infrastructure projects, more and more traditional substations or prefabricated cabins are put into use. According to national industry standards, accident smoke exhaust and ventilation are one of the indispensable functions. At present, this function is mostly achieved by using a fan device damper structure. The air outlet device provides ventilation power. When the fan device is in operation, the damper opens to provide air outlet space. When the fan device is not started, the damper closes to provide a corresponding level of protection for the prefabricated cabin. Although this traditional method can achieve the corresponding functions, it still has the following problems: (1) Equipped with a fan device damper, the ventilation cost is high; (2) The use of electric dampers, through electrical control, has safety and reliability issues; (3) There is a certain risk of water leakage, especially when the electric damper is not completely closed. Summary of the invention

[0004] The purpose of the present invention is to solve the ventilation and heat dissipation problems of power distribution and power electronic equipment and to provide a new type of ventilation and heat dissipation equipment.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a ventilation and heat dissipation device, characterized in that it includes a volute assembly; the volute assembly includes a fan assembly and a volute, the volute cover is outside the fan assembly, and an air outlet is provided at the lower part of the volute.

[0006] As a preferred embodiment of the present invention, a protective member is provided in the volute, and the protective member is arranged between the fan assembly and the air outlet to open or close the passage therebetween.

[0007] Further preferably, the protective element is arranged obliquely.

[0008] Further preferably, flexible sealing structures are provided on the four edges of the protective member.

[0009] As another preferred embodiment of the present invention, the ventilation and heat dissipation device further comprises an air inlet assembly, and the air inlet assembly is arranged on the same side of the volute assembly, or on the opposite side of the volute assembly.

[0010] Further preferably, a guide plate is provided at the lower portion of the volute, and the guide plate is arranged to be inclined outward and downward.

[0011] Further preferably, the air inlet assembly is provided with air inlet louvers; the blades of the air inlet louvers are arranged to overlap.

[0012] Further preferably, a filter assembly is provided on the inner side of the air inlet louver.

[0013] Further preferably, the volute assembly includes a filter assembly, and the filter assembly is installed on the air inlet side of the fan assembly.

[0014] Further preferably, an arc-shaped air guide plate is provided above the fan assembly, and two sides of the arc-shaped air guide plate are fixed to the inner side of the volute.

[0015] The ventilation and heat dissipation device of the present invention has the following beneficial effects: adopting air inlet louvers with overlapping blades to improve waterproof performance; avoiding the occurrence of air flow short circuits and improving ventilation and heat dissipation efficiency; improving space utilization; reducing ventilation and heat dissipation costs; the volute assembly adopts a mechanical self-sealing protection structure to improve safety and reliability; there is no need to be equipped with a fan device damper to reduce ventilation and air exchange costs; and improving the protection level of the enclosure structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation and use scenario of the ventilation and heat dissipation device of Example 1;

[0017] Figure 2 This is a schematic diagram of the structure of the ventilation and heat dissipation device in Example 1;

[0018] Figure 3 is a structural schematic diagram of a volute assembly;

[0019] Figure 4 is a side view of the volute assembly;

[0020] Figure 5 is a schematic diagram of the structure of a fan assembly;

[0021] Figure 6 is a structural schematic diagram of an air inlet assembly;

[0022] Figure 7 for Figure 6 Middle AA section view;

[0023] Figure 8 This is a schematic diagram of the installation and use scenario of the ventilation and heat dissipation device in Example 2;

[0024] Fig. 9 This is a schematic diagram of the structure of the volute assembly in Example 2;

[0025] Fig.10 for Fig. 9 Middle AA section view;

[0026] Fig.11 Schematic diagram of the fan assembly structure. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] Embodiment 1 The ventilation and heat dissipation device provided in this embodiment is as follows: Figure 1 and 2 As shown, it is installed inside the enclosure structure 4 of the power transformer and distribution equipment, and is mainly composed of a volute assembly 1, a panel assembly 2 and an air inlet assembly 3. Among them, the volute assembly 1 and the air inlet assembly 3 are both fixed on the panel assembly 2, and the volute assembly 1 and the air inlet assembly 3 can be on the same panel or on opposite panels, which needs to be determined according to actual needs.

[0029] like Figure 3 and Figure 4 As shown, the volute assembly 1 is composed of a volute 6, a fan assembly, an arc-shaped air guide plate 8, and a filter 9. The fan assembly is fixed to the upper part of the volute 6 by fasteners. The arc-shaped air guide plate 8 is a curved plate, which is arranged above the fan assembly, and its two sides are fixed on the inner wall of the volute 6. The arc-shaped air guide plate 8 guides the incoming air flow to the maximum extent and reduces the flow resistance. An air outlet 5 and a guide plate 10 are provided at the lower part of the volute 6. The guide plate 10 plays the role of guiding the outlet air to prevent the outlet air from being directly blown downward through the air outlet 5 and then entering the air inlet assembly 3 to form an air flow short circuit. The guide plate 10 is tilted downward from the inside to the outside, and the inclination angle a of the guide plate and the inclination angle b of the lower side of the volute are determined by strict fluid simulation and actual verification. In order to ensure that the maximum air output a is between 93-150°, and b is between 110-160°.

[0030] like Figure 5As shown, the fan assembly is composed of a fan 7, an air guide ring 11, and a bracket 12. The air guide ring 11 is synchronously fixed to the bracket 12 with the fan 7 to improve assembly accuracy, simplify assembly process, and increase air volume. At the same time, the back of the fan bracket 12 is provided with a bending structure 14. After the filter 9 is placed into the bending structure 14 from the upper side, the filter 9 and the bracket 12 are pressed together by fasteners. The filter 9 filters the airflow entering the fan to prevent dust from pouring in.

[0031] like Figure 6 and 7 As shown, the air intake assembly 3 includes an air intake filter 15 and an air intake louver 13, the blades of the air intake louver 13 are arranged to overlap at a certain angle to prevent rain. At the same time, the air intake filter 15 filters the air intake airflow to prevent dust.

[0032] The ventilation and heat dissipation device of this embodiment can ventilate the inside of the power distribution equipment, discharge the heat generated by the heating device 16, and reduce the ventilation and heat dissipation cost. In addition, the structure is compact, the space utilization rate is improved, the ventilation and heat dissipation efficiency is improved, and the waterproof performance is improved.

[0033] Embodiment 2 The ventilation and heat dissipation device provided in this embodiment is as follows: Figure 8 As shown, it mainly includes a volute assembly 1, which is installed on the outer facade of the enclosure structure 2. The enclosure structure 2 is the infrastructure for ventilation and ventilation applications, and its function is to install fixed ventilation and ventilation devices or equipment to provide support for the ventilation and ventilation equipment. The volute assembly 1 is fixedly installed on the enclosure structure 2 through a flexible seal 3 to increase the tightness and improve the protection level of the enclosure structure.

[0034] like Fig. 9 and 10 As shown, the volute assembly 1 mainly includes a fan assembly, a volute 5, and a filter 6.

[0035] The volute 5 is covered on the front side of the fan assembly. An air outlet 7 is provided at the lower part of the volute 5. Fig.11 As shown, the fan assembly consists of a fan 4, an air guide ring 11, and a bracket 12. The air guide ring 11 and the fan 4 are synchronously fixed to the bracket 12, which improves assembly accuracy, simplifies assembly process, and increases air output.

[0036] In this embodiment, a protective member 8 is provided between the air outlet 7 and the fan 4. The outer side of the protective member 8 is fixed to the inner wall of the volute 5 through an elastic hinge 9, and the opposite side thereof contacts the outer facade of the enclosure structure 2, and the other edges contact the inner wall of the volute 5. Flexible structures such as brushes or wool strips are provided on the edges around the protective member 8. Under the combined effect of the elastic force of the elastic hinge 9 and its own gravity, the protective member 8 separates the air outlet 7 and the fan 4 into two independent spaces. The protective member 8 is arranged to be inclined downward from the outside to the inside.

[0037] In this embodiment, the upper portion of the volute 5 , the protective member 8 , and the outer facade of the enclosure structure 2 together form a closed space to enclose the fan 4 .

[0038] like Figure 8 and 9 As shown in Figures 10 and 10, an arc-shaped air guide plate 10 is provided above the fan 4. Both sides of the arc-shaped air guide plate 10 are fixed to the inner side of the volute. The air guide plate is a curved plate, which guides the incoming air flow to the maximum extent and reduces the flow resistance. A filter 6 is also provided on the air inlet side of the fan 4, and the filter 6 plays a role in filtering the incoming air flow. An air guide ring 11 is provided on the air outlet side of the fan 4 to guide the outgoing air flow.

[0039] The working principle of the ventilation and heat dissipation device of this embodiment is as follows: Under normal circumstances, the fan is not running, and the protective member remains closed under the elastic force of the elastic hinge, and the flexible seals such as wool strips / brushes installed around the protective member play a dust and water-proof function. When the fan receives a control signal to start, the protective member overcomes the reaction force of the elastic hinge and opens downward under the static pressure of the airflow, and the airflow flows out through the air outlet at the bottom of the volute, realizing ventilation or accident smoke exhaust functions.

[0040] In this example, the opening and closing of the protective member is completely realized by a mechanical structure, avoiding the use of electrical control components. This is simple, reliable, and cost-effective, while providing a higher level of protection.

Claims

1. A ventilation and heat dissipation device, characterized in that: The invention comprises a volute assembly; the volute assembly comprises a fan assembly and a volute, the volute cover is outside the fan assembly, and an air outlet is provided at the lower part of the volute; a protective member is provided inside the volute, and the protective member is arranged between the fan assembly and the air outlet, and is used to open or close the passage between the two; the protective member is arranged downwardly and inclined from the outside to the inside; the outer side of the protective member is fixed to the inner wall of the volute by an elastic hinge, and the opposite side thereof is in contact with the outer facade of the enclosure structure, and the edge of the other part is in contact with the inner wall of the volute; a flexible sealing structure is provided on the edges around the protective member; under the combined action of the elastic force of the elastic hinge and its own gravity, the protective member separates the air outlet and the fan into two independent spaces; the upper part of the volute, the protective member, and the outer facade of the enclosure structure together form a closed space to enclose the fan; An arc-shaped air guide plate is provided above the fan assembly; the air guide plate is tilted downward from the inside to the outside, and the inclination angle a of the air guide plate and the inclination angle b of the lower side of the volute are determined through strict fluid simulation and actual verification to ensure that the maximum air output a is between 93-150° and b is between 110-160°.

2. The ventilation and heat dissipation device according to claim 1, characterized in that: It also includes an air inlet assembly, which is arranged on the same side of the volute assembly or on the opposite side of the volute assembly.

3. The ventilation and heat dissipation device according to claim 2, characterized in that: The air inlet component is provided with air inlet louvers; the blades of the air inlet louvers are arranged to overlap.

4. The ventilation and heat dissipation device according to claim 3, characterized in that: A filter assembly is provided on the inner side of the air inlet louver.

5. The ventilation and heat dissipation device according to any one of claims 1 to 4, characterized in that: The volute assembly includes a filter assembly, and the filter assembly is installed on the air inlet side of the fan assembly.

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