KR102523477B1 - Cooling Device of Multilayer Cooling Flow Path Structure and Radar Transmitting / Receiving Device Including the Same - Google Patents

Abstract

Disclosed are a cooling device having a multi-layered cooling passage structure and a radar transmission/reception device including the cooling device.
A cooling device for a radar transmission/reception module according to an embodiment of the present invention receives cooling water from the outside and causes the cooling water to collide with different positions of a cooling plate in contact with the transmission/reception module through a provided jet hole, It may include a cooling module for discharging the collided cooling water to the outside through the discharge passage.

Description

Cooling Device of Multilayer Cooling Flow Path Structure and Radar Transmitting / Receiving Device Including the Same}

The present invention relates to a cooling device based on a multi-layered cooling passage structure and a radar transmission/reception device including the cooling device.

The contents described in this section simply provide background information on the embodiments of the present invention and do not constitute prior art.

In general, the output of a radar greatly varies depending on the temperature of a transmit/receive (T/R) module (hereinafter referred to as a transmit/receive module). In particular, in the case of AESA (Active Electronically Scanned Array) radar, the temperature of the transmission/reception module is greatly affected. For example, when the temperature of the transceiver module is 80 degrees or more, the output of the AESA radar drops rapidly.

Accordingly, various studies are being conducted to prevent the temperature of the radar transmission/reception module from rising. In general, since each element of the transmit/receive module generates high power output, the transmit/receive module is cooled by manufacturing the element with a material of high thermal conductivity for heat dissipation or by installing a cooling path inside/outside the transmit/receive module.

As the demand for high-performance AESA radar increases, hundreds to thousands of transmit/receive modules form one AESA radar, so cooling performance evaluation for individual transmit/receive modules is performed as well as cooling flow path design to maintain uniform temperature for clustered transmit/receive modules. research is becoming more important.

In the prior art, the cooling of the transmission/reception module is achieved by simply installing a rectangular, smooth cooling passage in the cooling plate at the bottom of the transmission/reception module and sending cooling water therethrough.

However, in general, as the transmission/reception modules in the radar are continuously installed on one cooling passage in a serial form, cooling is not performed smoothly in the case of the transmission/reception module located at the rear end, so that cooling is not performed evenly, or the temperature of some transmission/reception modules rises. A problem arises.

The main object of the present invention is to provide a cooling device having a multi-layer cooling passage structure composed of multi-layer cooling passages generating collision jets to uniformly cool a transmission/reception module (T/R module) and a radar transmission/reception device including the same.

According to one aspect of the present invention, the cooling device of the radar transmission/reception module receives cooling water from the outside and collides the cooling water at different positions of the cooling plate in contact with the transmission/reception module through a provided jet hole. and a cooling module for discharging the cooling water collided at different locations to the outside through the discharge passage.

The cooling module may include: an inflow passage layer including at least one inflow passage and receiving the cooling water from the outside through the at least one inflow passage; a perforated plate layer formed on an upper layer of the inflow passage layer and having a plurality of jet holes to convert the introduced cooling water into a collision jet; And formed on the upper layer of the perforated plate layer, a collision jet of cooling water generated by the jet hole is generated at different positions of the cooling plate in contact with the transmission/reception module to cool the transmission/reception module, and the collided cooling water flows through one discharge passage. It may include a cooling passage layer that discharges to the outside through.

In the perforated plate layer, a plurality of jet holes may be formed along a line in which the transmission/reception modules are arranged, and the plurality of jet holes may be arranged in a direction parallel to the at least one inflow passage.

The cooling passage layer may include at least one module cooling passage for receiving the cooling water from the plurality of jet holes and cooling the transceiver module through collision jets of the flowing cooling water; and a central discharge passage connected to one end of each of the at least one module cooling passage through a passage connection, and discharging cooling water flowing from each of the at least one module cooling passage to the outside.

The at least one module cooling passage may be formed in a branched or serpentine shape based on the central discharge passage, and may be formed in the same number as the number of transmission/reception modules.

The passage connection portion may be formed between each of the at least one module cooling passage and the central discharge passage, and formed at an angle of less than 45 degrees with respect to the central discharge passage.

In addition, one side end of each of the at least one module cooling passage is formed in an open form, and the cooling water having increased temperature flows to the central discharge passage connected through the passage connection part, and The side end may be formed in a closed shape, so that the flow of cooling water may flow in the direction of the one side end.

A plurality of jet holes connected to each of the at least one module cooling passage is formed in a predetermined number for each transmission/reception channel included in the transmission/reception module contacting the module cooling passage, and two jets per transmission/reception channel of the transmission/reception module. It can be arranged so that the hole is located.

In addition, according to another aspect of the present invention, a radar transceiving device for achieving the above object includes at least one transceiving module; and located at the lower end of the at least one transmission/reception module, receiving cooling water from the outside, and causing the cooling water to collide with different positions of cooling plates in contact with the transmission/reception module through a provided jet hole, and collide at different positions. It may include a cooling module that discharges the cooled cooling water to the outside through the discharge passage.

The cooling module may include: an inflow passage layer including at least one inflow passage and receiving the cooling water from the outside through the at least one inflow passage; a perforated plate layer formed on an upper layer of the inflow passage layer and having a plurality of jet holes to convert the introduced cooling water into a collision jet; And formed on the upper layer of the perforated plate layer, a collision jet of cooling water generated by the jet hole is generated at different positions of the cooling plate in contact with the transmission/reception module to cool the transmission/reception module, and the collided cooling water flows through one discharge passage. It may include a cooling passage layer that discharges to the outside through.

As described above, the present invention can lower the maximum temperature of the transmission/reception module compared to the prior art under the same operating conditions by constructing a multi-layered cooling passage for generating collision jets to uniformly cool the transmission/reception module (T/R module). There is an effect.

In addition, the present invention has an effect of suppressing the temperature rise of the transmission/reception module located at the rear end even if the transmission/reception modules are arranged in series.

In addition, the present invention has an effect of improving the overall performance of a radar (eg, AESA radar) as it has a relatively uniform temperature distribution.

1 is a diagram schematically showing a radar transceiving device according to an embodiment of the present invention.
2 is a diagram for explaining the structure of a cooling module included in a radar transceiving device according to an embodiment of the present invention.
3A and 3B are views schematically showing a cooling module according to an embodiment of the present invention.
4 and 5 are diagrams showing the temperature distribution of the radar transceiver according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted. In addition, although preferred embodiments of the present invention will be described below, the technical idea of the present invention is not limited or limited thereto and can be modified and implemented in various ways by those skilled in the art. Hereinafter, a cooling device having a multi-layered cooling passage structure proposed in the present invention and a radar transmission/reception device including the same will be described in detail with reference to the drawings.

The cooling device according to the present embodiment is a device for cooling the radar transmission/reception module, and is preferably applied to an Active Electronically Scanned Array (AESA) radar, but is not necessarily limited thereto. Here, the AESA radar is used in a fire control system that guides and intercepts missiles because it can search for multiple high-resolution electromagnetic wave beams in a specific space at a very high speed using electronic circuits and process target signals. By utilizing these characteristics of AESA radar, AESA radar can be applied to fighter jets to perform various functions such as detection, tracking, fire control, guided weapon guidance, etc. of flying objects and missiles. In addition to this, the destroyer can be used to intercept enemy aircraft or anti-ship missiles in close proximity by applying CIWS (Close-in Weapon System) equipped with AESA radar.

1 is a diagram schematically showing a radar transceiver according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the structure of a cooling module included in a radar transceiver according to an embodiment of the present invention.

The radar transceiving device 10 according to this embodiment includes a transceiving module 100 and a cooling module 200. The radar transceiver 10 of FIG. 1 is according to an embodiment, and all blocks shown in FIG. 1 are not essential components, and in another embodiment, some blocks included in the radar transceiver 10 are added or changed. or can be deleted.

The radar transmission/reception device 10 refers to a device included in a radar and transmitting/receiving a radar signal while adjusting temperature.

The transmission/reception module 100 generates a radar signal to be transmitted to the outside and receives a radar reflection signal from the outside. In the transmission/reception module 100, a plurality of transmission/reception channels are configured. For example, the transmission/reception module 100 is composed of four transmission/reception channels. Here, the radar signal may be a high frequency signal, but is not necessarily limited thereto.

In particular, the transmission/reception module 100 may be connected to an antenna through a transmission line for wireless transmission/reception. The transmission/reception module 100 may have a form in which a plurality of transmission/reception modules are arranged. For example, the transceiver module 100 may be arranged in series on at least one line and may be a device for transmitting and receiving signals such as AESA radar and active phased array radar.

The transmission/reception module 100 may be located on the upper surface of the cooling module 200 and may be attached to the upper surface of the cooling module 200 in a fixed or detachable form. Here, the upper side of the cooling module 200 may be the upper side of the cooling passage layer 230 included in the cooling module 200 .

The cooling module 200 refers to a module having a multi-layered cooling channel structure including multi-layered cooling channels that generate collision jets to uniformly cool at least one transceiver module 100 .

The cooling module 200 according to this embodiment includes an inflow passage layer 210 , a perforated plate layer 220 and a cooling passage layer 230 .

The inflow passage layer 210 includes an inflow passage having an inlet through which cooling water enters.

The inflow passage of the inflow passage layer 210 is preferably a rectangular passage, but is not necessarily limited thereto, and the form of the passage may be implemented in various shapes.

The inflow passage of the inflow passage layer 210 may be formed in a line shape parallel to the line where the transmission/reception module 100 is arranged.

The perforated plate layer 220 is a layer for converting the introduced cooling water into a collision jet form.

The perforated plate layer 220 may include a plurality of jet holes through which the cooling water generates collision jets in the direction (upward direction) in which the transmission/reception modules 100 are arranged.

The number of jet holes of the perforated plate layer 220 is determined to match the number of transmission/reception channels of the transmission/reception module 100, and may be arranged based on the location of transmission/reception channels of the transmission/reception module 100.

For example, the jet holes of the perforated plate layer 220 may be arranged such that two are located per transmission/reception channel in the transmission/reception module, and 8 jet holes are based on the transmission/reception module 100 composed of 4 transmission/reception channels. can be located In addition, when the diameter of the jet hole of the perforated plate layer 220 is larger than a predetermined standard, the effect of the collision jet may be halved due to interference between external walls. Accordingly, the diameter of the jet hole of the perforated plate layer 220 may be formed to be 70% or less of the width of the cooling passage.

The cooling passage layer 230 includes a central discharge passage for discharging cooling water after the collision jet generated by the perforated plate layer 220 collides with the target surface contacting the lower end of the transmission/reception module 100 .

In the cooling passage layer 230, the cooling water passes through a plurality of jet holes of the perforated plate layer 220 and collides with the cooling plate (the target surface in contact with the lower end of the transmission/reception module 100) in the form of a collision jet, and then the cooling passage layer 230 ) flows along the flow path and is discharged to the outside.

When the cooling water collides with the cooling plate in the cooling passage layer 230, a large amount of heat is transferred from the transmission/reception module 100 to the cooling water, and thus the temperature of the cooling water greatly increases. Accordingly, the passages 232a and 232b of the cooling passage layer 230 are individually formed for each transmission/reception module 100, and after colliding with the cooling plate, the cooling water cools only one transmission/reception module 100 and is located in the center. It is discharged to the outside along the central discharge passage 234 .

In general, since cooling by collision jets shows higher cooling performance than when smooth cooling channels are used, they are used for cooling high-heating elements. However, the collision jet shows high cooling performance locally, but since a large amount of heat is transferred from the heating element to the cooling water, the temperature of the cooling water rises rapidly, resulting in a large reduction in cooling performance in the rear area in the case of a large area or continuous cooling. There are downsides.

In the cooling module 200 according to the present embodiment, the multi-layered cooling module shown in FIGS. 1 and 2 is configured to take advantage of the advantages of the collision jet and improve the disadvantages.

In the cooling module 200, after sufficiently cooling the unit transmission/reception modules (each transmission/reception module) through collision jets generated from a plurality of jet holes of the perforated plate layer 220, the heated cooling water flows through the cooling passage layer 230. is discharged to the central discharge passage 234 to prevent mixing between the cooling water newly introduced to cool the transmission/reception module 100 located at the rear end and the cooling water heated at the front end.

According to the above method, each of the at least one transmit/receive module 100 can be cooled by the cold cooling water introduced from the inflow passage layer 210, and constant cooling performance can be maintained even in an arrangement of transmit/receive modules connected in series. there is.

The cooling module 200 according to the present embodiment can cool each of the plurality of transmission/reception modules 100 through a cooling passage having a three-layer structure including perforated plates, and is connected to a central discharge passage for discharging heated cooling water. It can consist of euros. Here, the cooling passage may have a branched or serpentine shape connected to the central discharge passage.

Cooling passages in contact with each of the transmission/reception modules 100 in the cooling passage layer 230 of the cooling module 200 may be connected to the central discharge passage through a passage connection, and the angle of the passage connection is 45 degrees or less based on the central discharge passage. It is preferable to form. Since the cooling channel according to the present embodiment has a large pressure drop due to its structure, the connection angle is configured to be 45 degrees or less to prevent the pressure drop and the reverse flow of the cooling water. In addition, the inner surface of the passage connection portion is preferably processed (finished) by round processing in order to minimize the flow loss coefficient.

The fabrication of the multi-layered flow path in the cooling module 200 is preferably manufactured by laminating three metal plates, but is not necessarily limited thereto, and may be manufactured as one integrated cooling plate through additive manufacturing.

3A and 3B are schematic cross-sectional views of a cooling module according to an embodiment of the present invention.

3A is a cross-sectional view of the cooling module according to the first embodiment.

The cooling module 200 according to this embodiment includes an inflow passage layer 210 , a perforated plate layer 220 and a cooling passage layer 230 . The cooling module 200 of FIG. 3A is according to one embodiment, and all blocks shown in FIG. 3A are not essential components, and some blocks included in the cooling module 200 in another embodiment are added, changed, or deleted. It can be.

The cooling module 200 according to the first embodiment of the present invention is a module that cools at least one transmission/reception module provided in the radar, receives cooling water from the outside, and contacts the transmission/reception module through the provided jet hole. It collides with different positions of the cooling plate, and the cooling water colliding at the different positions is discharged to the outside through the discharge passage.

The cooling module 200 according to the first embodiment of the present invention is described as being a module included in the radar transceiver 10, but is not necessarily limited thereto, and is a separate cooling device including the cooling module 200. can be implemented

The inflow passage layer 210 includes at least one inflow passage 212 and receives cooling water from the outside through the at least one inflow passage 212 . Here, the inflow passage 212 may be formed of two passage lines 212a and 212b according to the arrangement of the transmission/reception module 100 .

The perforated plate layer 220 is formed on an upper layer of the inflow passage layer 210, and a plurality of jet holes 222 are formed to convert the introduced cooling water into a collision jet form.

The perforated plate layer 220 may be formed with a plurality of jet holes 222 along the line in which the transmission/reception modules 100 are arranged. For example, the plurality of jet holes 222 may be implemented as two lines of jet holes 222a and 222b along the line in which the transmission/reception modules 100 are arranged.

The plurality of jet holes 222 of the perforated plate layer 220 are arranged in a direction parallel to the at least one inflow passage 212 and formed.

A plurality of jet holes 222 connected to each of the at least one module cooling passage 232 is formed in a preset number per transmission/reception channel included in the transmission module contacting the module cooling passage 232 . The plurality of jet holes 222 may be arranged such that two jet holes 222 are positioned per transmission/reception channel included in the transmission/reception module 100 . For example, eight jet holes 222 may be located based on the transmission/reception module 100 composed of four transmission/reception channels.

The cooling passage layer 230 is formed on an upper layer of the perforated plate layer, and a collision jet of cooling water is generated by the jet hole 222 at different positions of the cooling plate in contact with the transmission/reception module to cool the transmission/reception module 100. The cooling passage layer 230 discharges the cooling water colliding with the cooling plate to the outside through one central discharge passage 234 .

The cooling passage layer 230 includes at least one module cooling passage 232 , a central discharge passage 234 and a passage connection part 236 . Here, each of the at least one module cooling passage 232 is connected to the passage connection part 236 and is connected to the central discharge passage 234 through the passage connection part 236 . For example, in the cooling passage layer 230, when the first module cooling passage 232a and the second module cooling passage 232b are formed along the line in which the transmission/reception modules 100 are arranged, the first module cooling passage ( 232a) and the second module cooling passage 232b are connected to the central discharge passage 234 through the first passage connection part 236a and the second passage connection part 236b.

At least one module cooling passage 232 of the cooling passage layer 230 receives cooling water from the plurality of jet holes 222 and cools the transmission/reception module 100 through collision jets of the flowing cooling water.

The central discharge passage 234 of the cooling passage layer 230 is connected to one end of each of the at least one module cooling passage 232 through a passage connection part 236, and flows in from each of the at least one module cooling passage 232. Drain the coolant to the outside.

At least one module cooling passage 232 is formed in a branched or serpentine shape based on the central discharge passage 234 . The at least one module cooling passage 232 may be formed in the same number as the number of transmission/reception modules.

The passage connection part 236 connecting the at least one module cooling passage 232 and the central discharge passage 234 is formed between each of the at least one module cooling passage 232 and the central discharge passage 234, and is formed between the central discharge passage 234. It may be formed at an angle of less than 45 degrees relative to (234).

One end of each of the at least one module cooling passage 232 is formed in an open shape, and flows the cooling water whose temperature has increased to the central discharge passage connected through the passage connection part 236 . In addition, the other end of each of the at least one module cooling passage 232 is formed in a closed shape, so that the flow of cooling water flows in the direction of one end.

3B is a cross-sectional view of a cooling module according to a second embodiment.

The cooling module 200 according to the second embodiment of the present invention has the same structure of the cooling water for cooling the transmission/reception module and the passage through which the cooling water flows, but there is a difference in that it has the structure of the integrated passage layer 240 .

In the case of the cooling module 200 of FIG. 3A , the module may be manufactured by manufacturing the inflow passage layer 210, the perforated plate layer 220, and the cooling passage layer 230, respectively, and then stacking them. In contrast, in the case of the cooling module 200 of FIG. 3B, it may be implemented as an integrated flow path layer 240. An inflow passage 212, a plurality of jet holes 222, at least one module cooling passage 232, a central discharge passage 234, a passage connection part 236, and the like may be formed in the integrated passage layer 240.

Since the configuration of the flow channels included in the integrated flow layer 240 is the same as that described in FIG. 3A , a detailed description thereof will be omitted.

4 and 5 are diagrams showing the temperature distribution of the radar transceiver according to an embodiment of the present invention.

(a) of FIG. 4 shows a conventional radar transceiver, and (b) of FIG. 4 shows the radar transceiver 10 according to the present embodiment.

Referring to FIG. 4, the radar transceiver 10 according to the present embodiment configures a multi-layered cooling passage generating collision jets to uniformly cool the transceiver module (T/R module), so that the prior art under the same operating conditions. In contrast, the maximum temperature of the transmit/receive module can be lowered by up to 8 degrees.

In addition, in the radar transceiving device 10 according to the present embodiment, even if the transceiving modules are arranged in series, it is possible to suppress the temperature rise of the transceiving module located at the rear end. In addition, the radar transceiving device 10 according to the present embodiment can improve the overall performance of a radar (eg, AESA radar) as it has a relatively uniform temperature distribution.

Referring to FIG. 5 , in the case of a cooling passage of a conventional radar transceiver, it can be confirmed that a maximum temperature deviation of 11 degrees or more occurs when four T/R modules are connected in series.

In contrast, in the case of the cooling passage of the radar transceiver 10 according to the present embodiment, it can be confirmed that the maximum temperature deviation can be maintained within 6 degrees when four T/R modules are connected in series.

The above description is only illustrative of the technical idea of the embodiment of the present invention, and those skilled in the art to which the embodiment of the present invention pertains may make various modifications and modifications within the scope not departing from the essential characteristics of the embodiment of the present invention. transformation will be possible. Therefore, the embodiments of the present invention are not intended to limit the technical idea of the embodiment of the present invention, but to explain, and the scope of the technical idea of the embodiment of the present invention is not limited by these examples. The protection scope of the embodiments of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the embodiments of the present invention.

10: radar transceiver
100: transmission/reception module 200: cooling module
210: inflow passage layer 212: inflow passage
220: perforated plate layer 222: jet hole
230: cooling passage layer 232: module cooling passage
234: central discharge flow path 236: flow path connection

Claims (10)

In the device for cooling the transmission and reception module in the radar,
A cooling module that receives cooling water from the outside, causes the cooling water to collide with different positions of the cooling plate in contact with the transmission/reception module through jet holes provided therein, and discharges the cooling water colliding at the different positions to the outside through a discharge passage. Including,
The cooling module may include: an inflow passage layer including at least one inflow passage and receiving the cooling water from the outside through the at least one inflow passage; a perforated plate layer formed on an upper layer of the inflow passage layer and having a plurality of jet holes to convert the introduced cooling water into a collision jet; And formed on the upper layer of the perforated plate layer, a collision jet of cooling water generated by the jet hole is generated at different positions of the cooling plate in contact with the transmission/reception module to cool the transmission/reception module, and the collided cooling water flows through one discharge passage. It includes a cooling passage layer that is discharged to the outside through
In the perforated plate layer, a plurality of jet holes are formed along the line in which the transmission and reception modules are arranged, and the plurality of jet holes are arranged in a direction parallel to the at least one inlet flow passage. . delete delete According to claim 1,
The cooling passage layer,
at least one module cooling passage for receiving the cooling water from the plurality of jet holes and cooling the transceiver module through collision jets of the flowing cooling water; and
A central discharge passage connected to one end of each of the at least one module cooling passage through a passage connection and discharging cooling water flowing from each of the at least one module cooling passage to the outside.
A cooling device comprising a. According to claim 4,
The at least one module cooling passage,
It is formed in a branched or serpentine shape based on the central discharge passage,
A cooling device, characterized in that formed in the same number as the number of the transmission and reception modules. According to claim 5,
The flow path connection part,
It is formed between each of the at least one module cooling passage and the central discharge passage, and is formed at an angle of less than 45 degrees with respect to the central discharge passage. According to claim 4,
One end of each of the at least one module cooling passage,
It is formed in an open shape and flows the cooling water whose temperature has increased into the central discharge passage connected through the passage connection part,
The cooling device, characterized in that the other end of each of the at least one module cooling passage is formed in a closed form so that the flow of cooling water flows in the direction of the one end. According to claim 1,
A plurality of jet holes connected to each of the at least one module cooling passage,
It is formed in a set number per transmission/reception channel included in the transmission/reception module contacting the module cooling passage,
A cooling device, characterized in that arranged so that two jet holes are positioned per transmission/reception channel of the transmission/reception module. at least one transmit/receive module; and
It is located at the lower end of the at least one transmission/reception module, receives cooling water from the outside, and causes the cooling water to collide with different positions of the cooling plate in contact with the transmission/reception module through a provided jet hole. Including a cooling module that discharges the cooling water to the outside through the discharge passage,
The cooling module may include: an inflow passage layer including at least one inflow passage and receiving the cooling water from the outside through the at least one inflow passage; a perforated plate layer formed on an upper layer of the inflow passage layer and having a plurality of jet holes to convert the introduced cooling water into a collision jet; And formed on the upper layer of the perforated plate layer, a collision jet of cooling water generated by the jet hole is generated at different positions of the cooling plate in contact with the transmission/reception module to cool the transmission/reception module, and the collided cooling water flows through one discharge passage. It includes a cooling passage layer that is discharged to the outside through
In the perforated plate layer, a plurality of jet holes are formed along the line in which the transmission and reception modules are arranged, and the plurality of jet holes are arranged in a direction parallel to the at least one inflow passage. Radar transmission and reception, characterized in that Device.
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