Self-adaptive parallel ventilation closed cabinet

Abstract

The invention discloses a self-adaptive parallel ventilation closed cabinet, which belongs to the technical field of electronic cabinet structures and comprises a cabinet body, a heat dissipation unit case, a heat dissipation unit case, a gas-liquid heat exchanger, a guide plate and a ventilation plate. Cold air is evenly sent out by the gas-liquid heat exchanger fan assembly and divided into two parts, one part enters the bottom of the case and is sucked into the case through the heat dissipation unit, and the other part of cold air passes through an air channel formed by the guide plate and the right side of the cabinet body and enters an air channel formed by the case and the front door through the ventilation plate and then is sucked into the case through the heat dissipation unit. All cold air flows through the electronic module to take heat out of the case, finally enters the gas-liquid heat exchanger through the air inlet assembly, and exchanges heat to the cooling liquid through the heat exchanger to take away the heat, so that a cooling loop is formed. The cabinet is compact in structure, parallel connection of case air inlet is achieved, the heat dissipation units can adjust the rotating speed in a self-adaptive mode according to heat of the electronic modules in the case, and the cabinet is high in heat dissipation capacity.

Description

Technical Field

[0001] The present application relates to the technical field of cabinet structures, and in particular to an adaptive parallel ventilated closed cabinet. Background Art

[0002] Cabinets are widely used in many fields such as environmental monitoring, rail transit, and radar detection. Electronic chassis such as signal transmission, signal reception and processing, information collection and processing can be installed inside. The layout of electronic chassis inside the cabinet is mostly arranged up and down. There are two common cooling methods for cabinets. One is air-to-air cooling. An air inlet is set at the bottom of the cabinet. Multiple chassis form a series cooling air duct. The heat is eventually discharged from the top of the top chassis to the outside of the cabinet, and heat is exchanged with the external air to form a cooling loop. The other is air-to-liquid cooling. An air-to-liquid heat exchanger is installed on the back or bottom of the cabinet, and cooling air is sent out from its bottom. Multiple chassis form a series cooling air duct. The heat is eventually discharged from the top of the top chassis into the air-to-liquid heat exchanger, and heat is exchanged with the coolant to form a cooling loop.

[0003] The cabinet using the first method is a non-enclosed cabinet. The heat generated by the lower chassis in the cabinet will enter the upper chassis, causing the electronic modules in the chassis to heat up continuously, seriously affecting the service life and reliability of the upper chassis. "A natural cooling duct structure for multi-chassis electrical cabinets based on parallel air ducts" (Application No.: CN201710585830.9, Publication No.: CN107295785A) proposes a parallel air duct structure, including control plug-ins and air duct plug-ins alternately arranged from top to bottom in the electrical cabinet. By setting up air duct plug-ins with insulating and heat-insulating baffles, the natural cooling of each chassis is independently designed, and each is naturally cooled without affecting each other. The air inlet of the cabinet is set at the lower part of the rear door, and the air outlet is set at the top of the cabinet. After the cold air enters the cabinet, the air volume at the bottom is large, and the air volume decreases as it goes up, and the air ducts cannot be completely paralleled. "A power cabinet with parallel air duct heat dissipation" (application number: CN201710593656.2, publication number: CN107230941A) proposes a power cabinet with parallel air duct heat dissipation, including a fan connected to the inside and outside of the cabinet, the air inlet area and the air outlet area are located on both sides of the air duct of the crimped heat sink and are connected through the air duct of the crimped heat sink to form a valve string unit of the parallel air duct. The temperature rise of each switch device is consistent, which effectively improves the heat dissipation efficiency. The cabinet adopts a stepped air duct. After each air duct takes out the heat, it is transported from the bottom of the cabinet to the air outlet at the top of the cabinet step by step. The air outlet duct is actually still in series. The gradually rising heat will have an adverse effect on the heat dissipation of the resistors arranged up and down in the cabinet, and the real air duct parallel connection is not achieved. At the same time, the above two cabinets exchange heat with the external air, and the heat exchange efficiency is low. They use non-enclosed cabinets, which will absorb dust and moisture outside the cabinet into the cabinet, causing the failure rate of electronic devices to increase.

[0004] The cabinet using the second method is a closed cabinet. The working environment of the electronic equipment in the cabinet is good, the heat dissipation efficiency is high, and it can meet the heat dissipation requirements of devices with high heat generation. At present, most solutions are to send cold air to the bottom of the cabinet through an air-to-liquid heat exchanger and enter the bottom chassis. Multiple chassis form a series cooling air duct. The heat is finally discharged from the top of the top chassis into the air-to-liquid heat exchanger, and heat is exchanged with the coolant to form a cooling circuit. The heat generated by the lower chassis in the cabinet will enter the upper chassis, causing the electronic modules in the chassis to continue to heat up, seriously affecting the service life and reliability of the upper chassis. "A Gas-Liquid Heat Dissipation Radar Electronic Equipment Cabinet" (Application No.: CN202010558622.1, Publication No.: CN111683505B) proposes a cabinet including a shell, a gas-liquid heat exchange device, an air delivery device, and a heat dissipation duct assembly, etc. The gas-liquid heat exchange device is L-shaped, and the cold air is sent to the front door of the cabinet and between the upper and lower plug-ins, and enters the plug-in boxes through the heat dissipation duct assembly arranged between the plug-ins, thus realizing a part of the parallel function. However, since the L-shaped gas-liquid heat exchange device still sends the cold air to the bottom of the cabinet, the air volume at the bottom is large after the cold air enters the cabinet, and the air volume decreases as it goes up, and the air duct parallel connection cannot be completely achieved. Summary of the invention

[0005] The present application provides an adaptive parallel ventilated closed cabinet, which can be used to solve the technical problem of poor heat dissipation effect.

[0006] The present application provides an adaptive parallel ventilation closed cabinet, the cabinet comprising:

[0007] Cabinets, multiple cooling units and chassis, gas-liquid heat exchangers, guide plates, ventilation plates;

[0008] A heat dissipation unit is correspondingly arranged on the upper part of each chassis;

[0009] The chassis is set up on different layers, and the cooling units have multiple layers correspondingly;

[0010] The chassis and the heat dissipation unit are arranged inside the cabinet from top to bottom in the order of upper heat dissipation unit, upper chassis, middle heat dissipation unit, middle chassis, lower heat dissipation unit, and lower chassis.

[0011] The gas-liquid heat exchanger is installed on the back of the cabinet, guide plates are installed at the air outlet and on the right side of the chassis, and a ventilation plate is installed on the right side of the chassis.

[0012] Furthermore, one side of the gas-liquid heat exchanger is an air inlet assembly and a heat exchanger, and the other side is a fan assembly of the gas-liquid heat exchanger, and the height of the gas-liquid heat exchanger is adapted to the height of the cabinet;

[0013] The guide plate is installed on the outlet direction side of the air-liquid heat exchanger outlet to divide the space in the cabinet into cold air circulation space and equipment space. The ventilation plate is installed between the chassis side and the cabinet body at the outlet direction.

[0014] Furthermore, the air-liquid heat exchanger fan assembly is provided with a plurality of fans, and the fans are evenly arranged from top to bottom.

[0015] Furthermore, the chassis structure is the same, and multiple electronic modules are arranged in each chassis to realize the cabinet function. Each chassis is also provided with a control module to adjust the corresponding cooling unit fan assembly in real time according to the temperature feedback from the electronic module.

[0016] Furthermore, the windshield module is arranged at an empty slot in the chassis where the electronic modules are not fully arranged.

[0017] Furthermore, the windshield module includes two symmetrically distributed pullers, a panel, a heat insulation board and a windshield.

[0018] Furthermore, cold air is sent out by the air-to-liquid heat exchanger fan assembly, passes through the air duct formed by the guide plate and the right side of the cabinet, and part of it enters the bottom of the lower chassis, and part of it enters the air duct formed by the upper chassis, middle chassis, lower chassis and the front door through the ventilation plate. The upper heat dissipation unit fan assembly, the middle heat dissipation unit fan assembly, and the lower heat dissipation unit fan assembly then draw the cold air into their respective chassis, flow through the electronic module, and take the heat out of the chassis. Finally, it enters the air-to-liquid heat exchanger through the air inlet assembly, exchanges the heat with the coolant through the heat exchanger, and forms a cooling circuit.

[0019] Furthermore, the cabinet is a load-bearing body, including a shell and a front door.

[0020] The beneficial effects of the present invention include:

[0021] 1. The air inlet assembly, heat exchanger and air-liquid heat exchanger fan assembly of the present invention are evenly arranged from top to bottom in the cabinet, ensuring that the cold air can be evenly delivered to the air inlet of the chassis, and the cold air volume obtained by the electronic modules in the three chassis is more balanced;

[0022] 2. The chassis of the present invention is equipped with a windshield module. When there is an empty slot in the chassis, the cold air at the bottom of the electronic module is prevented from escaping from the empty slot, thereby improving the balance of the air volume of the entire chassis. At the same time, the heat shield of the windshield module can play a heat insulation role, reducing the impact of the heating of the electronic module on the adjacent electronic modules;

[0023] 3. The fan of the heat dissipation unit of the present invention has a speed regulating function, and the speed of the fan can be adjusted in time according to the temperature change of the electronic module in the chassis, thereby reducing the energy consumption and noise of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the axonometric structure of an adaptive parallel ventilated closed cabinet provided in an embodiment of the present invention;

[0025] Figure 2 A schematic top view of wind direction of an adaptive parallel ventilated closed cabinet according to an embodiment of the present invention;

[0026] Figure 3 It is a right isometric view of a chassis, a heat dissipation unit, an air-liquid heat exchanger, a guide plate and a ventilation plate according to an embodiment of the present invention;

[0027] Figure 4 It is a left isometric view of a chassis, a heat dissipation unit, an air-liquid heat exchanger, a guide plate and a ventilation plate according to an embodiment of the present invention;

[0028] Figure 5 It is a right side view of the chassis and the heat dissipation unit of an embodiment of the present invention;

[0029] Figure 6 This is an axonometric view of a windshield module according to an embodiment of the present invention.

[0030] Among them, 1. cabinet; 2. upper heat dissipation unit; 3. middle heat dissipation unit; 4. lower heat dissipation unit; 5. upper chassis; 6. middle chassis; 7. lower chassis; 8. gas-liquid heat exchanger; 9. guide plate; 10. ventilation plate; 11. front door; 21. upper heat dissipation unit fan assembly; 31. middle heat dissipation unit fan assembly; 41. lower heat dissipation unit fan assembly; 51. first electronic module; 52. first control module; 53. first wind shield module; 531. puller; 533. panel; 534. heat insulation board; 535. wind shield; 61. second electronic module; 62. second control module; 63. second wind shield module; 71. third electronic module; 72. second control module; 73. third wind shield module; 81. air inlet assembly; 82. heat exchanger; 83. gas-liquid heat exchanger fan assembly. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0032] The following first introduces the embodiments of the present application in conjunction with the accompanying drawings.

[0033] The present invention proposes an adaptive parallel ventilation closed cabinet, such as Figures 1 to 5 As shown, the present invention is further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive and not restrictive. The present invention can also be implemented in other ways different from those described herein, and the protection scope of the present invention cannot be limited by this.

[0034] like Figure 1-Figure 3As shown, the present invention includes a cabinet 1, an upper heat dissipation unit 2, a middle heat dissipation unit 3, a lower heat dissipation unit 4, an upper chassis 5, a middle chassis 6, a lower chassis 7, an air-liquid heat exchanger 8, a guide plate 9, and a ventilation plate 10. The chassis and the heat dissipation unit are arranged from top to bottom in the cabinet in the order of the upper heat dissipation unit 2, the upper chassis 5, the middle heat dissipation unit 3, the middle chassis 6, the lower heat dissipation unit 4, and the lower chassis 7.

[0035] The gas-liquid heat exchanger 8 is installed at the back of the cabinet 1, a guide plate 9 is installed at the air outlet and the right side of the chassis, and a ventilation plate 10 is installed on the right side of the chassis.

[0036] like Figure 2-Figure 4 As shown, one side of the gas-liquid heat exchanger 8 is an air inlet assembly 81 and a heat exchanger 82, and the other side is a gas-liquid heat exchanger fan assembly 83. The height of the gas-liquid heat exchanger 8 is adapted to the height of the cabinet 1, that is, it is arranged from the top to the bottom of the cabinet 1. The guide plate 9 is installed on the outlet direction side of the gas-liquid heat exchanger outlet to divide the space in the cabinet into a cold air circulation space and an equipment space, and the ventilation plate 10 is installed between the side of the chassis and the cabinet at the outlet direction of the air outlet.

[0037] like Figure 4 As shown, the upper chassis 5, the middle chassis 6, and the lower chassis 7 have the same structure, and multiple electronic modules are arranged in each chassis to realize the cabinet function. Each chassis is provided with a control module, and the speed of the corresponding upper cooling unit fan assembly 21, the middle cooling unit fan assembly 31, and the lower cooling unit fan assembly 41 is adjusted in real time according to the temperature feedback from the electronic module, so as to achieve the effect of saving energy and reducing noise. For the vacant slots where the electronic modules in the chassis are not fully arranged, windshield modules are installed respectively, such as the first windshield module 52, the second windshield module 62, and the third windshield module 72 in the figure.

[0038] like Figure 6 As shown, the windshield module includes two symmetrically distributed pullers 531, a panel 533, a heat insulation board 534 and a windshield board 535. The windshield module is installed in a vacant slot in the chassis to block the cooling air in the slot to prevent the cooling air from escaping from the vacant slot and causing insufficient air volume for the electronic module. At the same time, the epoxy board of the windshield module can play a heat insulating role to reduce the impact of the heat generated by the electronic module on the adjacent electronic modules.

[0039] The air-liquid heat exchanger fan assembly is provided with multiple fans, and the fans are evenly arranged from top to bottom.

[0040] like Figure 2-Figure 5As shown, cold air is delivered by the air-liquid heat exchanger fan assembly 83, passes through the air duct formed by the guide plate 9 and the right side of the cabinet 1, and a part of it enters the bottom of the lower chassis 7, and a part of it enters the air duct formed by the upper chassis 5, the middle chassis 6, the lower chassis 7 and the front door 11 through the ventilation plate 10. The cold air is then drawn into the interior of each chassis by the upper heat dissipation unit fan assembly 21, the middle heat dissipation unit fan assembly 31, and the lower heat dissipation unit fan assembly 41, flows through the electronic module, takes the heat out of the chassis, and finally enters the interior of the air-liquid heat exchanger 8 through the air inlet assembly 81, exchanges the heat with the coolant through the heat exchanger 82, and forms a cooling circuit.

[0041] The present invention proposes an adaptive parallel ventilation closed cabinet, which adopts a closed cabinet, and an air-liquid heat exchanger transports cold air to between the cabinet front door and the front of the chassis through air ducts arranged up and down on the right side of the cabinet, and enters the interior of the chassis in parallel. The heat dissipation unit arranged on the top of the chassis can adaptively adjust the air volume according to the heat of the electronic module in the chassis, thereby realizing a closed cabinet with good temperature uniformity, high heat dissipation efficiency, energy saving and low noise.

[0042] The cabinet is the load-bearing body, including the shell and the front door;

[0043] Each chassis is equipped with several electronic modules and a control module. The control module is used to collect the temperature inside the chassis and control the fan speed of the cooling unit.

[0044] The gas-liquid heat exchanger is installed at the back of the cabinet. The cold air is sent out by the gas-liquid heat exchanger fan assembly and is divided into two parts. One part directly enters the bottom of the lower chassis and is drawn into the lower chassis by the heat dissipation unit (lower); the other part passes through the air duct formed by the guide plate, the right side wall of the chassis and the right side wall of the cabinet, and enters the air duct formed by the upper chassis, the middle chassis, the lower chassis and the front door through the ventilation plate, and then the upper heat dissipation unit and the middle heat dissipation unit draw the cold air into the upper chassis and the middle chassis respectively. All the cold air flows through the electronic module to take the heat out of the chassis, and finally enters the gas-liquid heat exchanger through the air inlet assembly, and exchanges the heat with the coolant through the heat exchanger to take it away, forming a cooling circuit.

[0045] The above-described embodiments of the present application do not constitute a limitation on the protection scope of the present application.

Claims

1. An adaptive parallel ventilated closed cabinet, characterized in that: The cabinet comprises: A cabinet (1), a plurality of heat dissipation units and a chassis, a gas-liquid heat exchanger (8), a guide plate (9), and a ventilation plate (10); A heat dissipation unit is correspondingly arranged on the upper part of each chassis; The chassis is set up on different layers, and the cooling units have multiple layers correspondingly; The chassis and the heat dissipation unit are arranged inside the cabinet from top to bottom in the order of an upper heat dissipation unit (2), an upper chassis (5), a middle heat dissipation unit (3), a middle chassis (6), a lower heat dissipation unit (4), and a lower chassis (7). The gas-liquid heat exchanger (8) is installed on the back of the cabinet (1), a guide plate (9) is installed at the air outlet and the right side of the chassis, and a ventilation plate (10) is installed on the right side of the chassis.

2. The cabinet according to claim 1, characterized in that: One side of the gas-liquid heat exchanger (8) is an air inlet assembly (81) and a heat exchanger (82), and the other side is a gas-liquid heat exchanger fan assembly (83). The height of the gas-liquid heat exchanger (8) is adapted to the height of the cabinet (1); The guide plate (9) is installed on the outlet direction side of the air-liquid heat exchanger outlet to divide the space in the cabinet into a cold air circulation space and an equipment space, and the ventilation plate (10) is installed between the side of the chassis and the cabinet body at the outlet direction of the air outlet.

3. The cabinet according to claim 2, characterized in that: The air-liquid heat exchanger fan assembly is provided with multiple fans, and the fans are evenly arranged from top to bottom.

4. The cabinet according to claim 1, characterized in that: The chassis structure is the same, and multiple electronic modules are arranged in each chassis to realize the cabinet function. Each chassis is also equipped with a control module to adjust the corresponding cooling unit fan assembly in real time according to the temperature feedback from the electronic module.

5. The cabinet according to claim 1, characterized in that: The windshield module is arranged at a vacant slot in the chassis where the electronic modules are not fully arranged.

6. The cabinet according to claim 5, characterized in that: The windshield module comprises two symmetrically distributed pullers (531), a panel (533), a heat insulation board (534) and a windshield (535).

7. The cabinet according to claim 1, characterized in that: The cold air is delivered by the air-liquid heat exchanger fan assembly (83), passes through the air duct formed by the guide plate (9) and the right side of the cabinet (1), and a part of it enters the bottom of the lower chassis (7), and a part of it enters the air duct formed by the upper chassis (5), the middle chassis (6), the lower chassis (7) and the front door (11) through the ventilation plate (10). The cold air is then drawn into the interior of each chassis by the heat dissipation unit fan assembly, flows through the electronic module, and takes the heat out of the chassis. Finally, it enters the interior of the air-liquid heat exchanger (8) through the air inlet assembly (81), exchanges the heat with the coolant through the heat exchanger (82), and forms a cooling circuit.

8. The cabinet according to claim 1, characterized in that: The cabinet (1) is a load-bearing body, comprising a shell and a front door.

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