Heat dissipation structure of negative pressure cabinet

Abstract

The utility model discloses a heat dissipation structure of a negative pressure cabinet, and relates to the technical field of negative pressure cabinets. The equipment cabinet comprises an equipment cabinet main body, an accommodating space is arranged in the equipment cabinet main body, a negative pressure port and an exhaust port are formed in the outer side wall of the equipment cabinet main body, and a control circuit board is arranged in the accommodating space; the negative pressure generating assembly is arranged in the containing space and comprises an air suction opening and an air blowing opening, and the air suction opening is connected with the negative pressure opening so as to generate negative pressure at the negative pressure opening; the heat dissipation channel is arranged in the accommodating space; the control circuit board is arranged in the heat dissipation channel or on the peripheral side of the heat dissipation channel. One end of the heat dissipation channel is connected with the blowing port, and the other end is an air outlet communicated with the accommodating space; air flow generated by the air blowing opening can be firstly guided into the heat dissipation channel to dissipate heat of the control circuit board, then enters the containing space through the air outlet to dissipate heat of the outer side of the negative pressure generation assembly, and finally is exhausted from the air exhaust opening. The technical scheme has the advantages of good heat dissipation effect, no influence on negative pressure effect, simple and compact structure and energy conservation.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure cabinet technology, specifically to a heat dissipation structure for a negative pressure cabinet. Background Technology

[0002] A server rack is a freestanding or self-supporting enclosure used to house electrical or electronic equipment. It is an indispensable component of electrical equipment and a carrier for electrical control equipment. Server racks are generally made of cold-rolled steel or alloys and provide protection against water, dust, and electromagnetic interference for the stored equipment.

[0003] A negative pressure cabinet is a device used to generate negative pressure in scenarios involving negative pressure adsorption and negative pressure actuation. Generally, to facilitate the management and control of multiple electronic devices, these devices are often placed in a heat dissipation cabinet. Some electronic devices within the cabinet, such as control circuit boards containing multiple components, generate significant heat and require independent cooling fans for targeted cooling. However, these independent cooling fans are often bulky, low-speed, and have limited airflow, resulting in relatively poor heat dissipation for the control circuit boards. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a heat dissipation structure for a negative pressure cabinet, which has the advantages of good heat dissipation, no impact on negative pressure effect, simple and compact structure, and energy saving.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a heat dissipation structure for a negative pressure cabinet, comprising:

[0006] The main body of the cabinet has an internal storage space, and a negative pressure port and an exhaust port are provided on the outer side wall of the cabinet body. A control circuit board is provided in the storage space.

[0007] A negative pressure generating component is disposed within the accommodating space and includes an air intake and an air outlet. The air intake is connected to the negative pressure port to generate negative pressure at the negative pressure port.

[0008] A heat dissipation channel is disposed within the accommodating space; the control circuit board is disposed inside or on the outer periphery of the heat dissipation channel; one end of the heat dissipation channel is connected to the air blowing port, and the other end is an air outlet communicating with the accommodating space; the airflow generated by the air blowing port is first introduced into the heat dissipation channel to dissipate heat from the control circuit board, and then enters the accommodating space through the air outlet to dissipate heat from the outside of the negative pressure generating component, and finally is discharged from the exhaust port.

[0009] The present invention further includes a control circuit board disposed on the outer periphery of the heat dissipation channel, and a first heat dissipation fin extending from the control circuit board toward the inner side of the heat dissipation channel.

[0010] In a further embodiment of this invention, the control circuit board is provided with a second heat dissipation fin extending into the accommodating space.

[0011] The present invention further includes the following: the negative pressure generating component includes a volute duct and a high-speed centrifugal fan for driving the airflow within the volute duct to generate negative pressure.

[0012] The present invention is further provided that the air outlet faces the outside of the high-speed centrifugal fan, and the cross-section of the air outlet is inclined.

[0013] The present invention further includes a silencer provided between the negative pressure port and the air intake port.

[0014] The present invention further includes an outer cylinder, an inner cylinder, and a sound-absorbing material disposed between the outer cylinder and the inner cylinder, wherein the inner cylinder has a plurality of sound-absorbing holes on its periphery.

[0015] The present invention further includes an exhaust protective net on the inner side of the exhaust vent.

[0016] The present invention further provides that the negative pressure port and the exhaust port are located on the same side of the main body of the cabinet, and the bottom of the main body of the cabinet is provided with shock-absorbing pads.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, the heat dissipation channel eliminates the need for additional heat dissipation mechanisms inside the negative pressure cabinet, making the cabinet space simpler and more compact. At the same time, since heat dissipation is achieved by blowing air through the negative pressure generating component, the negative pressure generating component can be reused, making it more energy-efficient and environmentally friendly. The heat dissipation effect is matched with the operating state of the negative pressure generating component, and the heat dissipation efficiency will be higher when the cabinet is running at high power, achieving a good heat dissipation effect.

[0019] 2. In this utility model, a silencer is provided between the negative pressure port and the air intake port to prevent the air intake of the negative pressure generating component from generating excessive noise, which would affect the user experience of the negative pressure cabinet. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0023] Figure 3 This is an exploded view of the structure of this utility model;

[0024] Figure 4 This is an exploded view of the structure of this utility model from another perspective;

[0025] Figure 5 This is an exploded view of the structure of this utility model from another perspective.

[0026] Explanation of reference numerals in the attached drawings: 100, cabinet body; 200, negative pressure generating component; 300, control circuit board; 400, heat dissipation channel; 110, negative pressure port; 120, exhaust port; 210, air intake port; 220, air blowing port; 410, air outlet; 310, first heat dissipation fin; 320, second heat dissipation fin; 230, volute air duct; 240, high-speed centrifugal fan; 500, silencer; 600, exhaust protection net; 700, shock-absorbing feet. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0029] This embodiment relates to a heat dissipation structure for a negative pressure cabinet, such as... Figure 1-5 As shown. It includes: cabinet body 100, negative pressure generating component 200, control circuit board 300 and heat dissipation channel 400.

[0030] The cabinet body 100 has an internal storage space. A negative pressure port 110 and an exhaust port 120 are located on the outer wall of the cabinet body. A control circuit board 300 is located within the internal storage space of the cabinet body 100 and is used to control the start / stop of the cabinet, the adsorption pressure, the adsorption flow rate, and to connect to external power supplies and control signals. During operation, it generates significant heat and requires heat dissipation and cooling to ensure normal operation. A negative pressure generating component 200 is located within the storage space of the cabinet body 100 and is the negative pressure generating part of the negative pressure cabinet. It includes an air intake port 210 and an air outlet 220. The negative pressure generating component 200 transfers air from the air intake port 210 to the air outlet 220 to create airflow, thereby generating negative pressure at the air intake port 210. The air intake port 210 is connected to the negative pressure port 110 to generate negative pressure for external use. The heat dissipation channel 400 is located inside the accommodating space; while the control circuit board 300 is located inside or on the outer periphery of the heat dissipation channel 400; one end of the heat dissipation channel 400 is connected to the air outlet 220, and the other end is the air outlet 410, which is connected to the accommodating space.

[0031] When the negative pressure cabinet is in operation, the negative pressure generating component 200 generates airflow at the air outlet 220. The airflow is first guided into the heat dissipation channel 400 to dissipate heat from the control circuit board 300 inside or on the outer periphery of the heat dissipation channel 400. Then, the airflow enters the accommodating space through the air outlet 410 to dissipate heat from the outside of the negative pressure generating component 200 within the accommodating space. Finally, the airflow is discharged from the exhaust port 120, thus achieving heat dissipation for the circuit control board and the negative pressure generating component 200 within the negative pressure cabinet. The design of the heat dissipation channel 400 eliminates the need for additional heat dissipation mechanisms within the negative pressure cabinet, making the cabinet space simpler and more compact. Furthermore, since heat dissipation is achieved through the airflow from the negative pressure generating component 200, the component can be reused, resulting in greater energy efficiency and environmental friendliness. The heat dissipation effect is matched to the operating state of the negative pressure generating component 200; the heat dissipation efficiency is even higher during high-power operation of the cabinet, achieving excellent heat dissipation results.

[0032] In this embodiment, the control circuit board 300 is disposed on the outer periphery of the heat dissipation channel 400. A first heat dissipation fin 310 extends inward from the control circuit board 300 into the heat dissipation channel 400. Heat generated on the control circuit board 300 is transferred to the first heat dissipation fin 310. The airflow within the heat dissipation channel 400 cools the first heat dissipation fin 310, thereby achieving heat dissipation for the control circuit board 300 and ensuring good and stable operation of the cabinet. In other embodiments, the control circuit board 300 can also be directly disposed on the inner side of the heat dissipation channel 400, with the airflow within the channel directly cooling the control circuit board 300. As a preferred embodiment, a second heat dissipation fin 320 extends into the accommodating space from the control circuit board 300. Airflow entering the accommodating space from the air outlet 410 of the heat dissipation channel 400 cools the second heat dissipation fin 320, achieving secondary heat dissipation for the control circuit board 300 and ensuring good heat dissipation for the negative pressure cabinet.

[0033] In this embodiment, the negative pressure generating component 200 includes: a volute air duct 230 and a high-speed centrifugal fan 240 for driving airflow within the volute air duct 230 to generate negative pressure. The volute air duct 230 increases the airflow speed of the negative pressure generating component 200, thereby generating greater negative pressure and a larger airflow to meet the negative pressure requirements. It also increases the airflow velocity at the air outlet 220 of the negative pressure generating component 200, achieving better heat dissipation. As a preferred embodiment, the air outlet 410 faces outwards from the high-speed centrifugal fan 240, and the cross-section of the air outlet 410 is inclined. This allows the airflow exiting from the air outlet 410 of the heat dissipation channel 400 to directly blow towards the outside of the high-speed centrifugal fan 240, thereby dissipating heat from the high-speed centrifugal fan 240 and preventing overheating of the high-speed centrifugal fan 240 from affecting the stable operation of the cabinet.

[0034] As a preferred embodiment, a silencer 500 is provided between the negative pressure port 110 and the air intake port 210 to prevent the negative pressure generating component 200 from generating excessive noise that would affect the user experience of the negative pressure cabinet. Specifically, in this embodiment, the silencer 500 includes an outer cylinder, an inner cylinder, and a sound-absorbing material disposed between the outer cylinder and the inner cylinder. The inner cylinder has several sound-absorbing holes on its periphery to achieve a good sound-absorbing effect, reduce the operating noise of the negative pressure cabinet, and improve the user experience.

[0035] In this embodiment, an exhaust protection net 600 is provided inside the exhaust vent 120 to prevent foreign objects from falling into the accommodating space of the cabinet body 100 through the exhaust vent 120, thus avoiding damage to the cabinet and abnormal noise. As a preferred solution, the exhaust protection net 600 is basket-shaped and located inside the exhaust vent 120. The four sides of the exhaust protection net 600 are mesh-like, and the bottom is plate-like, so that exhaust can be carried out through the four sides of the exhaust protection net 600. The bottom can effectively prevent foreign objects from falling into the accommodating space, achieving a good protective effect.

[0036] As a preferred solution, the negative pressure port 110 and the exhaust port 120 are located on the same side of the cabinet body 100, so that the cabinet body 100 can maintain good stability during operation. At the same time, the bottom of the cabinet body 100 is provided with shock-absorbing pads 700 to provide a certain degree of shock absorption and prevent the cabinet from becoming unstable and making abnormal noises during operation.

[0037] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A heat dissipation structure for a negative pressure cabinet, characterized in that, include: The cabinet body (100) has an internal storage space, and a negative pressure port (110) and an exhaust port (120) are provided on the outer side wall of the cabinet body (100). A control circuit board (300) is provided in the storage space. A negative pressure generating component (200) is disposed within the accommodating space and includes an air intake (210) and an air outlet (220). The air intake (210) is connected to the negative pressure port (110) to generate negative pressure at the negative pressure port (110). A heat dissipation channel (400) is disposed within the accommodating space; the control circuit board (300) is disposed inside or on the outer periphery of the heat dissipation channel (400); one end of the heat dissipation channel (400) is connected to the air outlet (220), and the other end is an air outlet (410) connected to the accommodating space; the airflow generated by the air outlet (220) is first introduced into the heat dissipation channel (400) to dissipate heat from the control circuit board (300), and then enters the accommodating space through the air outlet (410) to dissipate heat from the outside of the negative pressure generating component (200), and finally is discharged from the exhaust port (120).

2. The heat dissipation structure of the negative pressure cabinet according to claim 1, characterized in that, The control circuit board (300) is disposed on the outer periphery of the heat dissipation channel (400), and the control circuit board (300) extends into the heat dissipation channel (400) and is provided with a first heat dissipation fin (310).

3. The heat dissipation structure of the negative pressure cabinet according to claim 2, characterized in that, The control circuit board (300) is provided with a second heat dissipation fin (320) extending into the accommodating space.

4. The heat dissipation structure of the negative pressure cabinet according to claim 1, characterized in that, The negative pressure generating component (200) includes: a volute duct (230) and a high-speed centrifugal fan (240) for driving airflow within the volute duct (230) to generate negative pressure.

5. The heat dissipation structure of the negative pressure cabinet according to claim 4, characterized in that, The air outlet (410) faces the outside of the high-speed centrifugal fan (240), and the cross-section of the air outlet (410) is inclined.

6. The heat dissipation structure of the negative pressure cabinet according to claim 1, characterized in that, A silencer (500) is provided between the negative pressure port (110) and the air intake port (210).

7. The heat dissipation structure of the negative pressure cabinet according to claim 6, characterized in that, The silencer (500) includes an outer cylinder, an inner cylinder, and a sound-absorbing material disposed between the outer cylinder and the inner cylinder. The inner cylinder has a plurality of sound-absorbing holes on its periphery.

8. The heat dissipation structure of the negative pressure cabinet according to claim 1, characterized in that, An exhaust protection net (600) is provided on the inner side of the exhaust vent (120).

9. The heat dissipation structure of the negative pressure cabinet according to claim 1, characterized in that, The negative pressure port (110) and the exhaust port (120) are located on the same side of the cabinet body (100), and the bottom of the cabinet body (100) is provided with shock-absorbing pads (700).

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