CN108282988B - Heat exchange air duct system for electric control cabinet - Google Patents
Heat exchange air duct system for electric control cabinet Download PDFInfo
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- CN108282988B CN108282988B CN201810266345.XA CN201810266345A CN108282988B CN 108282988 B CN108282988 B CN 108282988B CN 201810266345 A CN201810266345 A CN 201810266345A CN 108282988 B CN108282988 B CN 108282988B
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- air
- air duct
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- air outlet
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
Abstract
The application relates to a heat exchange air duct system for an electric control cabinet, which belongs to the technical field of heat extraction and air guide of the electric control cabinet, and comprises a heat exchanger, a curved air duct with a Z-shaped longitudinal section and at least two stages of horizontal air ducts, wherein the heat exchanger is used for feeding cold air into the cabinet body through an air blowing port and pumping hot air out of the cabinet body through an air sucking port, the curved air duct comprises an air inlet section, a transition section and an air outlet section, the outlet end of the air outlet section is a main air outlet of the curved air duct, and a secondary air outlet is arranged on the transition section.
Description
Technical Field
The application belongs to the technical field of heat removal and air guide of electric control cabinets, and particularly relates to a heat exchange air duct system for an electric control cabinet.
Background
Along with the development of new energy industry, the cutting industry of materials such as crystalline silicon materials, semiconductors, magnetic materials, sapphires and the like is driven to develop rapidly, and the application field of corresponding cutting equipment is becoming wider, so that higher requirements on dust prevention and heat dissipation of an electric control cabinet are provided. At present, a large number of cutting processing environments have the phenomena of high humidity, more dust and the like, and the electric control cabinet needs high protection level. The electric control cabinet adopts a fully sealed mode in the aspect of dust prevention, and adopts an air conditioner and an exhaust fan mechanism in the aspect of heat dissipation, however, the adoption of the air conditioner for heat dissipation is extremely easy to generate condensed water due to large temperature difference, and electrical elements are short-circuited or even damaged.
In order to prevent condensed water from being generated in the cabinet, a heat exchanger is currently adopted to replace an air conditioner. The heat exchanger is arranged outside the electric control cabinet, the lower outlet of the heat exchanger blows cold air into the cabinet, and the upper outlet of the heat exchanger absorbs the heat air from the cabinet, so that air circulation is realized in the cabinet, and the temperature in the cabinet is reduced. However, the heat exchanger is limited by the structure of the heat exchanger, and only effective heat exchange can be realized near the heat exchanger, so that the problems of small heat exchange space and poor heat exchange effect are solved, and the problems of high energy consumption, high temperature point alarm and the like are caused by high temperature in the electric control cabinet and continuous full-load operation of the heat exchanger.
Disclosure of Invention
Aiming at various defects in the prior art, in order to solve the problems, on the basis of maintaining the original structure of the electric control cabinet, the inventor adds a heat exchange air duct system on the bottom surface or the side surface of the cabinet body, adopts a mode of combining a bent air duct and a multi-stage horizontal air duct and is provided with a plurality of cold air outlets, thereby not only fully utilizing the idle space in the cabinet body, but also obtaining obvious heat exchange effect.
In order to achieve the above purpose, the present application provides the following technical solutions:
a heat exchange air duct system for an electrical cabinet, comprising:
the heat exchanger is positioned at the outer side of the cabinet body of the electric control cabinet, and is used for feeding cold air into the inner part of the cabinet body through a blowing port positioned at the bottom of the cabinet body and pumping hot air to the outer side of the cabinet body through an air suction port positioned at the top of the cabinet body;
the air conditioner comprises a curved air duct with a Z-shaped longitudinal section, and comprises an air inlet section, a transition section and an air outlet section, wherein the inlet end of the air inlet section is arranged right opposite to the air blowing opening, the transition section is arranged along the vertical direction, the top of the transition section is communicated with the outlet end of the air inlet section, the bottom of the transition section is communicated with the inlet end of the air outlet section, the outlet end of the air outlet section is a main air outlet of the curved air duct, the main air outlet is used for blowing air along the horizontal direction and in a direction far away from the air blowing opening, and a secondary air outlet is arranged on the transition section;
and the inlet end of the rear-stage horizontal air channel is communicated with the outlet end of the front-stage horizontal air channel, the height of the inlet end of the rear-stage horizontal air channel is smaller than that of the outlet end of the front-stage horizontal air channel, and the inlet end of the horizontal air channel positioned at the forefront stage is communicated with the main air outlet.
Further, the air inlet section and the air outlet section are both of arc structures.
Further, a guide plate fixedly connected with the transition section is arranged at the secondary air outlet, the guide plate is of a lower guide structure, and a gap for the air outlet of the secondary air outlet is reserved between the bottom of the guide plate and the transition section.
Further, the height of the secondary air outlet is 1/5-1/3 of the height of the air blowing opening, and the height of the main air outlet is at least 2 times of the height of the secondary air outlet.
Further, the height of the inlet end of the rear-stage horizontal air duct is 2/3-4/5 of the height of the outlet end of the front-stage horizontal air duct.
Further, the bent air duct is detachably connected with the forefront level horizontal air duct and the adjacent two levels of horizontal air ducts, and a rubber pad is arranged at the joint.
Further, the at least two stages of horizontal air channels are positioned on the bottom surface or the side surface of the cabinet body.
Further, the horizontal air duct is provided with 2-5 stages.
The beneficial effects of the application are as follows:
adopt curved wind channel and multistage horizontal wind channel mode that combines together, send into the cabinet internal portion with the cold wind that heat exchanger provided, simultaneously, with the help of main air outlet, secondary air outlet, the entry end in the horizontal wind channel of back level and the difference in height of the exit end in the horizontal wind channel of preceding stage form a plurality of cold wind export, guarantee that the cold wind can be sent into the different regions of the cabinet body, improve cooling ventilation efficiency, moreover, but at least two-stage horizontal wind channel integrated in the bottom surface or the side of the cabinet body, do not influence the internal space use of cabinet, be applicable to the heat transfer cooling of various sealed automatically controlled cabinets, economic benefits is high, the practicality is strong.
Drawings
FIG. 1 is a schematic view of the overall structure of the present application;
FIG. 2 is a schematic diagram of a combination of a curved duct and a horizontal duct.
In the accompanying drawings: the air conditioner comprises a 1-cabinet body, a 2-heat exchanger, a 3-air blowing port, a 4-air suction port, a 5-bent air duct, a 501-air inlet section, a 502-transition section, a 503-air outlet section, a 504-air inlet section, a 6-first horizontal air duct, a 7-second horizontal air duct, a 8-third horizontal air duct, a 9-electric element, a 10-deflector, a 11-main air outlet, a 12-secondary air outlet, a 13-first air outlet and a 14-second air outlet;
the direction of the arrow in fig. 1-2 indicates the wind direction.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described in the following with reference to the accompanying drawings, and based on the embodiments of the present application, other similar embodiments obtained by those skilled in the art without making any inventive effort should be included in the scope of protection of the present application. In addition, directional words such as "upper", "lower", "left", "right", and the like, as used in the following embodiments are merely directions with reference to the drawings, and thus, the directional words used are intended to illustrate, not to limit, the application.
Embodiment one:
as shown in fig. 1-2, a heat exchange air duct system for an electric control cabinet comprises a cabinet body 1 of the electric control cabinet, a heat exchanger 2, a bent air duct 5 and a horizontal air duct. An electric element 9 is arranged in the cabinet body 1, a blowing port 3 is arranged at the bottom of the cabinet body, and an air suction port 4 is arranged at the top of the cabinet body. The heat exchanger 2 is located outside the cabinet body 1, cold air is fed into the cabinet body 1 through the air blowing port 3, hot air is pumped out of the cabinet body 1 through the air suction port 4, and therefore air circulation is formed inside the cabinet body 1, and the cooling and ventilation effects are achieved.
In order to enlarge the heat exchange space and improve the heat exchange effect, the inventor sends cold air provided by the heat exchanger 2 into the cabinet body 1 by virtue of the bent air duct 5 and the horizontal air duct. Preferably, the longitudinal section of the curved air duct 5 is Z-shaped, and includes an air inlet section 501, a transition section 502 and an air outlet section 503, where an inlet end 504 of the air inlet section is opposite to the air blowing port 3 and is used for introducing cold air into the curved air duct 5, and the transition section 502 is arranged along a vertical direction and is used for changing a transmission direction of the cold air, and meanwhile, both the air inlet section 501 and the air outlet section 503 are in arc structures so as to reduce wind resistance. The top of the transition section 502 is communicated with the outlet end of the air inlet section 501, the bottom of the transition section is communicated with the inlet end of the air outlet section 503, the outlet end of the air outlet section 503 is a main air outlet 11 of the curved air duct 5, and the main air outlet 11 is horizontally and far away from the air blowing port 3, in addition, a secondary air outlet 12 is arranged on the transition section 502, in order to avoid that cold air blown from the secondary air outlet 12 is directly sucked away by the heat exchanger 2 through the air suction port 4, the guide plate 10 is of a lower guide structure, namely, the top of the guide plate 10 is fixedly connected with the transition section 502, and a gap for the secondary air outlet 12 to air is reserved between the bottom of the guide plate and the transition section 502.
In order to effectively control the air output of the main air outlet 11 and the secondary air outlet 12, the height of the secondary air outlet 12 is set to be 1/5-1/3 of the height of the air blowing port 3, and the height of the main air outlet 11 is set to be at least 2 times of the height of the secondary air outlet 12. That is, most of the cold air introduced from the air blowing port 3 flows through the main air outlet 11, and only a small part flows through the secondary air outlet 12 and directly enters the cabinet 1 to cool the electric component 9 on the side of the cabinet 1 close to the heat exchanger 2.
The cold air flowing through the main air outlet 11 reaches the inside of the horizontal air duct, which is provided with at least 2 stages, preferably 2-5 stages. The inlet end of the horizontal air channel positioned at the forefront stage is communicated with the main air outlet 11 and is used for guiding cold air into the horizontal air channel, and the inlet end of the horizontal air channel at the rear stage is communicated with the outlet end of the horizontal air channel at the front stage, namely, the adjacent two stages of horizontal air channels are communicated. In order to ensure that cold air can be fed into different areas of the cabinet body 1, the inventor sets the height of the inlet end of the rear-stage horizontal air duct to be smaller than the height of the outlet end of the front-stage horizontal air duct, namely, the inlet end of the rear-stage horizontal air duct and the outlet end of the front-stage horizontal air duct form a height difference, that is, the outlet end of the front-stage horizontal air duct is divided into a first air outlet 13 and a second air outlet 14, cold air blown out from the front-stage horizontal air duct is divided into two parts, one part of cold air flows through the first air outlet 13 into the rear-stage horizontal air duct, the other part of cold air flows through the second air outlet 14 and directly enters the cabinet body 1, and the electric element 9 positioned in the area is cooled. Preferably, the inlet end of the rear-stage horizontal air duct is 2/3 to 4/5 of the outlet end of the front-stage horizontal air duct, that is, most of the cold air blown out from the front-stage horizontal air duct enters the rear-stage horizontal air duct.
In this embodiment, the horizontal air duct includes a first horizontal air duct 6, a second horizontal air duct 7 and a third horizontal air duct 8, wherein, the inlet end of the first horizontal air duct 6 is communicated with a main air outlet 11, the outlet end of the third horizontal air duct 8 is close to one side of the cabinet body 1 far away from the heat exchanger 2, meanwhile, the outlet ends of the first horizontal air duct 6 and the second horizontal air duct 7 are equally divided into a first air outlet 13 and a second air outlet 14, the outlet ends of the main air outlet 11, a secondary air outlet 12, 2 first air outlets 13, 2 second air outlets 14 and the third horizontal air duct 8 are all used as cold air outlets, cold air is sent into different areas of the cabinet body 1 by means of a plurality of cold air outlets, hot air generated by the cold air extrusion electric element 9 entering the interior of the cabinet body 1 is enabled to rise to the top of the cabinet body 1, the heat exchanger 2 is pumped into the interior of the heat exchanger 2 through the air suction port 4 and cooled, a circulation system of cold air is formed, the whole cooling and ventilation efficiency of the electric cabinet is improved, and the ventilation efficiency is novel structure is achieved. In other embodiments, the number of stages of the horizontal duct and the length of the horizontal duct may be increased or decreased according to the internal space of the cabinet 1.
In addition, the curved air duct 5 is detachably connected with the forefront level horizontal air duct and the adjacent two levels of horizontal air ducts, and the connection part is provided with a rubber pad, so that the maintenance and the disassembly are convenient. In this embodiment, the horizontal wind channel of at least two-stage is located the bottom surface of the cabinet body 1, in some other embodiments, horizontal wind channel still can be located the side of the cabinet body 1 to reduce the use influence to cabinet body 1 inner space, simultaneously, heat transfer wind channel system can be applicable to the heat transfer cooling of various sealed automatically controlled cabinets, such as the automatically controlled cabinet (case) of digit control machine tool, communications facilities automatically controlled cabinet (case), program control switch, heavy machinery operation control cabinet (case), measuring instrument control cabinet (case), electrical machining machinery control cabinet (case) etc. economic benefits is high, and the practicality is strong.
The foregoing detailed description of the application has been presented for purposes of illustration and description, but is not intended to limit the scope of the application, i.e., the application is not limited to the details shown and described.
Claims (8)
1. A heat exchange air duct system for an electric control cabinet, comprising:
the heat exchanger is positioned at the outer side of the cabinet body of the electric control cabinet, and is used for feeding cold air into the inner part of the cabinet body through a blowing port positioned at the bottom of the cabinet body and pumping hot air to the outer side of the cabinet body through an air suction port positioned at the top of the cabinet body;
the air conditioner comprises a curved air duct with a Z-shaped longitudinal section, and comprises an air inlet section, a transition section and an air outlet section, wherein the inlet end of the air inlet section is arranged right opposite to the air blowing opening, the transition section is arranged along the vertical direction, the top of the transition section is communicated with the outlet end of the air inlet section, the bottom of the transition section is communicated with the inlet end of the air outlet section, the outlet end of the air outlet section is a main air outlet of the curved air duct, the main air outlet is used for blowing air along the horizontal direction and in a direction far away from the air blowing opening, and a secondary air outlet is arranged on the transition section;
and the inlet end of the rear-stage horizontal air channel is communicated with the outlet end of the front-stage horizontal air channel, the height of the inlet end of the rear-stage horizontal air channel is smaller than that of the outlet end of the front-stage horizontal air channel, and the inlet end of the horizontal air channel positioned at the forefront stage is communicated with the main air outlet.
2. The heat exchange air duct system for an electric cabinet according to claim 1, wherein the air inlet section and the air outlet section are both provided with arc structures.
3. The heat exchange air duct system for an electric cabinet according to claim 1, wherein a deflector fixedly connected with the transition section is arranged at the secondary air outlet, the deflector is of a lower deflector structure, and a gap for air outlet of the secondary air outlet is reserved between the bottom of the deflector and the transition section.
4. A heat exchange air duct system for an electric cabinet according to any one of claims 1-3, wherein the secondary air outlet has a height of 1/5 to 1/3 of the height of the air outlet, and the primary air outlet has a height at least 2 times the height of the secondary air outlet.
5. The heat exchange air duct system for an electric cabinet according to claim 4, wherein the height of the inlet end of the rear-stage horizontal air duct is 2/3 to 4/5 of the height of the outlet end of the front-stage horizontal air duct.
6. The heat exchange air duct system for an electric cabinet according to claim 5, wherein the bent air duct is detachably connected with the foremost horizontal air duct and the adjacent two-stage horizontal air duct, and a rubber pad is arranged at the connection part.
7. The heat exchange air duct system for an electric cabinet of claim 5, wherein the at least two levels of horizontal air ducts are located on a bottom or side of the cabinet.
8. The heat exchange air duct system for an electric cabinet of claim 7, wherein the horizontal air duct is provided with 2-5 stages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266345.XA CN108282988B (en) | 2018-03-28 | 2018-03-28 | Heat exchange air duct system for electric control cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266345.XA CN108282988B (en) | 2018-03-28 | 2018-03-28 | Heat exchange air duct system for electric control cabinet |
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| CN108282988A CN108282988A (en) | 2018-07-13 |
| CN108282988B true CN108282988B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810266345.XA Active CN108282988B (en) | 2018-03-28 | 2018-03-28 | Heat exchange air duct system for electric control cabinet |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109757085B (en) * | 2019-01-25 | 2024-04-02 | 西南石油大学 | Gradually-reducing gradually-expanding forced air cooling system |
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