CN116033721A - A high protection electrical cabinet - Google Patents

Abstract

The invention discloses a high-protection electrical cabinet which comprises an electrical cabinet main body, wherein the electrical cabinet main body is divided into a closed internal circulation space and an external circulation space which are mutually independent through structural members, and the electrical cabinet main body is provided with a second fan, a power module, a reactor air channel and a second thermosiphon radiator; this high protection regulator cubicle shifts the calorific capacity of power module in the cabinet to the outside condenser of rack through the evaporimeter of first thermosiphon radiator, and reactor heat and inside stray heat in the cabinet shift to the outside second condenser of cabinet through the evaporimeter of second thermosiphon radiator, and first condenser and second condenser are established ties and are arranged in the outer circulation wind channel, and first fan is discharged the heat of first condenser and second condenser to the external world through the air outlet on rack upper portion, and the outside is independent to dispel the heat in the regulator cubicle, can realize IP65 protection with low costs, is applicable to high protection, high humidity, high salt fog's application scenario.

Description

A high protection electrical cabinet

technical field

The invention relates to the technical field of power electronics heat dissipation, in particular to a high-protection electric cabinet.

Background technique

At present, the commonly used cooling method for high-power electrical equipment is generally the air-cooling method that does not separate the internal and external heat dissipation. This heat dissipation method will cause various impurities such as external dust, salt spray, and other possible corrosive gases and water to enter the inside of the cabinet. It cannot meet the application requirements of high humidity, high salt fog and other scenarios; if the above application scenarios are to be met, the entire cabinet needs to be treated with high protection, resulting in increased heat dissipation costs. The cabinets of the prior art cannot use the latent heat of the working fluid to efficiently transfer the heat inside the cabinet from the inside of the cabinet to the external circulation air duct. The internal components of the cabinet are not completely isolated from the external air duct, and the protection level of IP65 cannot be achieved. Application requirements for scenarios such as high humidity and high salt fog.

Contents of the invention

The problem to be solved by the present invention is to propose a high-protection electrical cabinet, which transfers the calorific value of the power module in the cabinet to the condenser outside the cabinet through the evaporator of the first thermosiphon radiator, and the reactance in the cabinet The heat of the radiator and the internal stray heat are transferred to the second condenser outside the cabinet through the evaporator of the second thermosiphon radiator. The heat of the condenser and the second condenser is discharged to the outside through the air outlet on the upper part of the cabinet, and the inside and outside of the electrical cabinet dissipate heat independently, which can achieve IP65 protection at low cost, and is suitable for application scenarios with high protection, high humidity, and high salt spray.

In order to solve the above-mentioned technical problems, the present invention provides a high-protection electrical cabinet, which includes a main body of the electrical cabinet, and the main body of the electrical cabinet is divided into a closed inner circulation space independent of each other and an outer circulation space interacting with the outside air through structural components. The main body of the electrical cabinet is provided with a second fan, a power module, a reactor, a reactor air duct, and a second thermosiphon radiator; the power module includes a power module and a first thermosiphon radiator arranged on the upper part of the power module and capacitors, the first thermosyphon radiator includes a first evaporator placed on the power module and a first condenser placed in the outer circulation space, the second thermosyphon radiator includes a The second evaporator and the second condenser arranged in the outer circulation space; the upper space of the air outlet of the first condenser is provided with a first fan for extracting the hot air passing through the first condenser to the outside;

The airtight internal circulation space includes: a first evaporator, a second evaporator, a reactor, a reactor air duct, an internal circulation air duct baffle, a second fan, a power module and a capacitor. The first evaporator, the second The second evaporator, reactor, reactor air duct, internal circulation air duct baffle, second fan, power module and capacitor are accommodated inside the main body of the electrical cabinet, and the reactor, second evaporator and second The fan forms the first internal circulation air duct, and the capacitor and power module form the second internal circulation air duct;

The outer circulation space includes: an outer circulation air inlet cavity, an outer circulation air inlet, a second condenser, a first condenser, a first fan, and an outer circulation air outlet;

The first condenser and the second condenser are arranged in series in the outer circulation air duct, and the outer circulation air duct is as follows: the air enters from the outer circulation air inlet of the outer circulation air intake cavity, first passes through the second condenser, and then After passing through the first condenser, the heat of the first condenser and the second condenser is discharged to the external space through the first fan;

The external circulation air outlet is arranged on the upper part of the main body of the electric cabinet, the external circulation air inlet is arranged on the back of the main body of the electric cabinet, and the second fan is arranged on the upper part of the second evaporator;

The first condenser and the first evaporator are connected by a pipeline, and the second condenser and the second evaporator are connected by a pipeline, and the internal circulation part of the pipeline is separated from the external circulation part by an internal and external circulation separation member. open.

Preferably, the second fan exhausts and dissipates heat against the reactor, the heat passes through the second evaporator and becomes cold air and enters the second fan, and a part of the air from the second fan circulates upward to take away the heat in the cabinet. For stray heat, another part of the air from the second fan circulates down and enters the reactor again.

Preferably, ventilation holes for adjusting the internal circulation airflow are arranged around the second fan.

Preferably, both sides of the air outlet of the second condenser are provided with mesh structural members for adjusting the air volume flowing through the second condenser.

Preferably, the second condenser is assembled with the main body of the electrical cabinet at an angle.

Preferably, the first condenser and the second condenser are treated with salt spray resistant electrophoresis.

Preferably, the external circulation air inlet and the external circulation air outlet are provided with dust-proof nets and louvers.

Preferably, the first condenser has a Y-shaped structural layout, the upper part of the Y-shaped structural layout is the air outlet cavity of the first condenser, and the lower part of the Y-shaped structural layout is the air intake cavity of the first condenser A part of the cold air from the external circulation air inlet passes through the second condenser and then enters the air intake chamber of the first condenser, and another part of the cold air from the external circulation air inlet directly enters the air intake chamber of the first condenser The wind that enters the air inlet cavity passes through the first condenser and is exhausted to the external space by the first fan after converging at the air outlet cavity.

Preferably, the air outlet of the second condenser is provided with an external circulation air duct baffle for promoting the transfer of heat and stray heat from the reactor in the electrical cabinet to the second condenser.

After adopting the above-mentioned structure, the high-protection electrical cabinet includes the main body of the electrical cabinet, which is separated into an independent airtight inner circulation space and an outer circulation space that interacts with the outside air through structural components. The main body of the electrical cabinet is provided with a second Fan, power module, reactor, reactor air duct, second thermosyphon radiator; the power module includes a power module and a first thermosyphon radiator and capacitor arranged on the upper part of the power module, the first heat The siphon radiator includes a first evaporator placed on the power module and a first condenser arranged in the outer circulation space, and the second thermosiphon radiator includes a second evaporator placed on the upper part of the reactor and arranged in the The second condenser of the outer circulation space; the upper space of the air outlet of the first condenser is provided with a first fan for extracting the hot air passing through the first condenser to the outside; the airtight inner circulation space includes: An evaporator, a second evaporator, a reactor, a reactor air duct, an internal circulation air duct baffle, a second fan, a power module, and a capacitor, the first evaporator, the second evaporator, the reactor, and the reactor The air duct, the internal circulation air duct baffle plate, the second fan, the power module and the capacitor are accommodated inside the main body of the electrical cabinet, and the reactor, the second evaporator and the second fan form an inner circulation air duct 1, so The capacitor and the power module form the air circulation duct 2; the outer circulation space includes: an outer circulation air inlet cavity, an outer circulation air inlet, a second condenser, a first condenser, a first fan, and an outer circulation air outlet; The first condenser and the second condenser are arranged in series in the outer circulation air duct, and the outer circulation air duct is as follows: the air enters from the outer circulation air inlet of the outer circulation air intake cavity, first passes through the second condenser, and then After passing through the first condenser, the heat of the first condenser and the second condenser is discharged to the external space through the first fan; the external circulation air outlet is arranged on the upper part of the main body of the electrical cabinet, and the external circulation enters The tuyere is set on the back of the main body of the electrical cabinet, the second fan is placed on the upper part of the second evaporator; the first condenser and the first evaporator are connected by pipelines, and the second condenser and the second The evaporator is connected by a pipeline, and the pipeline is completely separated by an internal and external circulation separation member; this high-protection electrical cabinet transfers the heat generated by the power module in the cabinet to the condenser outside the cabinet through the evaporator of the first thermosiphon radiator , the heat of the reactor in the cabinet and the internal stray heat are transferred to the second condenser outside the cabinet through the evaporator of the second thermosiphon radiator, the first condenser and the second condenser are arranged in series in the outer circulation air duct, the first The fan discharges the heat of the first condenser and the second condenser to the outside through the air outlet on the upper part of the cabinet, and the inside and outside of the electrical cabinet dissipate heat independently, which can achieve IP65 protection at low cost, and is suitable for high protection, high humidity, and high salt spray environments Application scenarios.

Description of drawings

Fig. 1 is the left side view of high protection electric cabinet of the present invention;

Fig. 2 is the front view of the high protection electrical cabinet of the present invention;

Fig. 3 is a structural diagram of the air outlet of the second condenser of the high-protection electrical cabinet of the present invention.

The realization of the purpose, functions and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right" etc. are based on The orientation or positional relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations on this Application. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

Embodiment one

Please refer to Fig. 1 and Fig. 2; Fig. 1 is a left view of the high-protection electric cabinet of the present invention; Fig. 2 is a front view of the high-protection electric cabinet of the present invention; this embodiment discloses a high-protection electric cabinet, including an electric cabinet main body 1 , the main body 1 of the electrical cabinet is divided into mutually independent airtight inner circulation spaces and outer circulation spaces interacting with the outside air through structural members. The main body 1 of the electrical cabinet is provided with a second fan 3, a power module, a reactor 5, and a reactor Air duct 6, second thermosiphon radiator; the power module includes a power module 4 and a first thermosiphon radiator and a capacitor 15 arranged on the top of the power module 4, the first thermosiphon radiator includes a power module placed on the power module 4 The first evaporator 9 and the first condenser 10 arranged in the outer circulation space, the second thermosiphon radiator includes the second evaporator 7 placed on the upper part of the reactor 5 and the second condenser arranged in the outer circulation space 8; the upper space of the air outlet of the first condenser 10 is provided with a first fan 2 for extracting the hot air passing through the first condenser 10 to the outside;

The airtight internal circulation space includes: a first evaporator 9, a second evaporator 7, a reactor 5, a reactor air duct 6, an inner circulation air duct baffle 16, a second fan 3, a power module 4 and a capacitor 15, The first evaporator 9, the second evaporator 7, the reactor 5, the reactor air duct 6, the internal circulation air duct baffle 16, the second fan 3, the power module 4 and the capacitor 15 are accommodated in the main body 1 of the electrical cabinet Inside, the reactor 5, the second evaporator 7 and the second fan 3 form an inner circulation air duct 1, and the capacitor 15 and the power module 4 form an inner circulation air duct 2;

The outer circulation space includes: an outer circulation air inlet cavity 14, an outer circulation air inlet 11, a second condenser 8, a first condenser 10, a first fan 2, and an outer circulation air outlet 12;

The first condenser 8 and the second condenser 10 are arranged in series in the outer circulation air duct. The outer circulation air duct is: the air enters from the outer circulation air inlet 11 of the outer circulation air intake cavity 14, and first passes through the second condenser 8, then pass through the first condenser 10, and then discharge the heat of the first condenser 10 and the second condenser 8 to the external space through the first fan 2;

The external circulation air outlet 12 is arranged on the upper part of the electrical cabinet main body 1, the external circulation air inlet 11 is arranged on the back of the electrical cabinet main body 1, and the second fan 3 is arranged on the upper part of the second evaporator 7;

The first condenser 10 and the first evaporator 9 are connected by a pipeline, and the second condenser 8 and the second evaporator 7 are connected by a pipeline, and the internal circulation part of the pipeline is separated from the external circulation part by an internal and external circulation separation member. open.

Embodiment two

The present embodiment is based on the first embodiment. In the present embodiment, the second fan 3 exhausts and dissipates heat against the reactor 5. After the heat passes through the second evaporator 7, it becomes cold wind and enters the second fan 3. The second fan 3 A part of the air is circulated upwards to take away the stray heat in the cabinet, and the other part of the air from the second fan 3 circulates downwards and then enters the reactor 5 again.

Embodiment three

This embodiment is based on the first embodiment. In this embodiment, ventilation holes 17 for adjusting the internal circulation airflow are provided around the second fan 3 .

Embodiment four

This embodiment is based on Embodiment 1. In this embodiment, mesh structural members for adjusting the air volume flowing through the second condenser 8 are provided on both sides of the air outlet of the second condenser 8 .

Embodiment five

This embodiment is based on Embodiment 1. In this embodiment, the second condenser 8 is assembled with the main body of the electrical cabinet at a certain angle.

Embodiment six

This embodiment is based on Embodiment 1. In this embodiment, the first condenser 10 and the second condenser 8 are treated with salt spray resistant electrophoresis.

Embodiment seven

This embodiment is based on Embodiment 1. In this embodiment, the external circulation air inlet 11 and the external circulation air outlet 12 are provided with dust-proof nets and shutters.

Embodiment eight

This embodiment is based on Embodiment 1. In this embodiment, the first condenser 10 has a Y-shaped structural layout, and the upper part of the Y-shaped structural layout is the air outlet cavity 102 of the first condenser 10. The Y-shaped structural layout The lower part of the type structure layout is the air inlet chamber 101 of the first condenser 10. A part of the cold air from the external circulation air inlet 11 enters the air inlet chamber 101 of the first condenser 10 after passing through the second condenser 8, and the external circulation enters the air inlet chamber 101 of the first condenser 10. The other part of the cold air from the tuyere 11 directly enters the air inlet cavity of the first condenser 10, and the wind entering the air inlet cavity passes through the first condenser 10 and then is exhausted by the first fan 2 after converging at the air outlet cavity. outside space.

Embodiment nine

Please refer to FIG. 3 . FIG. 3 is a structural diagram of the air outlet of the second condenser of the high-protection electrical cabinet of the present invention. This embodiment is based on Embodiment 1. In this embodiment, a device is provided beside the air outlet of the second condenser 8 to promote the transfer of the heat and stray heat of the reactor 5 in the electrical cabinet 1 to the second condenser 8. Outer circulation air duct baffle 13. The outer circulation air duct baffle 13 is used to adjust the air volume flowing through the second condenser 8 and improve the condensation effect of the second condenser 8 .

The high-protection electrical cabinet transfers the heat generated by the power module in the cabinet to the condenser outside the cabinet through the evaporator of the first thermosiphon radiator, and the heat of the reactor in the cabinet and the internal stray heat are evaporated by the second thermosiphon radiator The first condenser is transferred to the second condenser outside the cabinet, the first condenser and the second condenser are arranged in series in the external circulation air duct, and the first fan discharges the heat of the first condenser and the second condenser through the air outlet on the upper part of the cabinet To the outside world, the inside and outside of the electrical cabinet can dissipate heat independently, which can achieve IP65 protection at low cost, and is suitable for application scenarios with high protection, high humidity, and high salt spray.

The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and the scope of rights of the present application is not limited thereby. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the present application shall fall within the scope of rights of the present application.

Claims (9)

1. A high-protection electrical cabinet, characterized in that it comprises an electrical cabinet main body, and the electrical cabinet main body is separated into mutually independent airtight inner circulation spaces and an outer circulation space interacting with outside air by structural members, and the electrical cabinet main body A second fan, a power module, a reactor, an air duct for the reactor, and a second thermosiphon radiator are provided; the power module includes a power module and a first thermosiphon radiator and a capacitor arranged on the upper part of the power module. The first thermosyphon radiator includes a first evaporator placed on the power module and a first condenser arranged in the outer circulation space, and the second thermosyphon radiator includes a second evaporator placed on the upper part of the reactor A condenser and a second condenser arranged in the outer circulation space; the upper space of the air outlet of the first condenser is provided with a first fan for extracting the hot air passing through the first condenser to the outside; The airtight internal circulation space includes: a first evaporator, a second evaporator, a reactor, a reactor air duct, an internal circulation air duct baffle, a second fan, a power module and a capacitor. The first evaporator, the second The second evaporator, reactor, reactor air duct, internal circulation air duct baffle, second fan, power module and capacitor are accommodated inside the main body of the electrical cabinet, and the reactor, second evaporator and second The fan forms the first internal circulation air duct, and the capacitor and power module form the second internal circulation air duct; The outer circulation space includes: an outer circulation air inlet cavity, an outer circulation air inlet, a first condenser, a second condenser, a first fan, and an outer circulation air outlet; The first condenser and the second condenser are arranged in series in the outer circulation air duct, and the outer circulation air duct is as follows: the air enters from the outer circulation air inlet of the outer circulation air intake cavity, first passes through the second condenser, and then After passing through the first condenser, the heat of the first condenser and the second condenser is discharged to the external space through the first fan; The external circulation air outlet is arranged on the upper part of the main body of the electric cabinet, the external circulation air inlet is arranged on the back of the main body of the electric cabinet, and the second fan is arranged on the upper part of the second evaporator; The first condenser and the first evaporator are connected by a pipeline, and the second condenser and the second evaporator are connected by a pipeline, and the internal circulation part of the pipeline is separated from the external circulation part by an internal and external circulation separation member. open. 2. The high-protection electrical cabinet according to claim 1, wherein the second fan exhausts and dissipates heat against the reactor, and the heat becomes cold air after passing through the second evaporator and enters the second evaporator. A part of the air from the second fan circulates upward to take away the stray heat in the cabinet, and the other part of the air from the second fan circulates downward and then enters the reactor again. 3. The high-protection electrical cabinet according to claim 2, wherein ventilation holes for adjusting the internal circulation airflow are arranged around the second fan. 4. The high-protection electrical cabinet according to claim 1, characterized in that mesh structures for adjusting the air volume flowing through the second condenser are provided on both sides of the air outlet of the second condenser. 5 . The high-protection electrical cabinet according to claim 1 , wherein the second condenser is assembled with the main body of the electrical cabinet at a certain angle. 6. The high-protection electrical cabinet according to claim 1, wherein the first condenser and the second condenser are treated with salt spray resistant electrophoresis. 7. The high-protection electrical cabinet according to claim 1, characterized in that, the external circulation air inlet and the external circulation air outlet are provided with dust-proof nets and shutters. 8. The high-protection electrical cabinet according to claim 1, wherein the first condenser is in a Y-shaped structure layout, and the upper part of the Y-shaped structure layout is the air outlet cavity of the first condenser, and the The lower part of the Y-shaped structure layout is the air inlet cavity of the first condenser. A part of the cold air of the external circulation air inlet passes through the second condenser and then enters the air intake cavity of the first condenser. The other part of the external circulation air inlet A part of the cold air directly enters the air inlet chamber of the first condenser, and the wind entering the air inlet chamber passes through the first condenser and is then combined at the air outlet chamber and then discharged to the external space by the first fan. 9. The high-protection electrical cabinet according to claim 1, characterized in that, beside the air outlet of the second condenser, there is a device for promoting the heat and stray heat of the reactor in the electrical cabinet to be transferred to the second condenser. Outer circulation air duct baffle.

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