CN206323733U - A kind of working fluid submerges cooled power amplifier in transmitter unit entirely - Google Patents

Abstract

The utility model provides a flowing liquid full immersion cooling type transmitter power amplifier unit, comprising: a box body; a top cover plate detachably fixed on the top of the box body; a substrate fixed inside the box body; a power amplifier chip installed on the substrate ; the signal interface and power interface arranged on the rear side of the cabinet; the liquid inlet pipe arranged on the rear side of the cabinet; and the liquid outlet pipe arranged on the front side of the cabinet, the installation height of the liquid outlet pipe is higher than that of the power amplifier chip The installation height in the box, the outside of the liquid inlet pipe and the liquid outlet pipe are connected by a circulating pump and a pipeline. The flowing liquid fully submerged cooling transmitter power amplifier unit uses insulating cooling oil as the cooling medium. Since the specific heat capacity of the insulating cooling oil is greater than that of air, the heat dissipation efficiency of liquid cooling is significantly higher than that of air cooling under the same conditions, and the insulating cooling oil working medium is the same as that of air. Chips and other heating elements are in direct contact, increasing the contact area, reducing contact thermal resistance, and significantly improving heat dissipation efficiency.

Description

A Transmitter Power Amplifier Unit of Flowing Liquid Total Immersion Cooling

technical field

The utility model belongs to the technical field of heat dissipation of high-power electric appliances, and in particular relates to a transmitter power amplifier unit of a flow liquid full immersion cooling type.

Background technique

All-solid-state transmitters have entered the world market for many years, and they are favored by users for their long life, low maintenance, and stable and reliable operation. However, the power amplifier chip of the transmitter consumes a lot of power and has high requirements on the cooling system. The cooling system of the transmitter power amplifier unit currently adopts two methods: traditional air-cooled and water-cooled substrate radiator cooling.

The air-cooled transmitter cooling system is economical and practical, and has high reliability in areas with good environment, but the air-cooled method has its inherent disadvantages - (1) The noise is large, especially when the high-power fan is in operation and the airflow There will be a lot of noise when passing through the power amplifier unit; (2) The requirements for the dust filter system are high, and the air-cooled transmitter has high requirements for the air cleanliness of the machine room, otherwise the air duct of the power amplifier unit is easy to be blocked; (3) The ambient temperature The requirements are high, and the ambient temperature of the air-cooled method will directly affect the output power of the transmitter. In some high-temperature areas or summer high-temperature times, various methods and measures must be used to reduce the ambient temperature (add air conditioners, etc.) to maintain the transmitter. It is in a constant temperature working state; (4) The air-cooled transmitter will take up a lot of space in the machine due to the design of the air duct, and the general volume will be large, and the area with high water content in the air will cause corrosion of the air duct in the machine, and the plateau area The cooling effect will be poor due to the thin air.

Compared with air cooling, the transmitter cooled by the water-cooled substrate radiator has many advantages, such as small size, low noise, high heat dissipation efficiency, and is suitable for high-power transmitters. The heat dissipation of the water-cooled substrate is to place the multi-channel power amplifier module of the working circuit on the heat dissipation plate, and the heat dissipation plate is equipped with a closed cooling pipeline; the cooling pipeline communicates with an external liquid circulation device; the power generated by the pump promotes the liquid circulation in the closed system , the heat generated by the power amplifier chip absorbed by the heat sink is brought to a heat sink with a larger area for heat dissipation. The cooled liquid flows back to the heat sink again, and the cycle repeats. This kind of water-cooled substrate radiator has the following disadvantages: (1) liquid leakage, once it leaks, it will cause shutdown; (2) it is easy to generate scale in the water-cooled substrate, once the scale is formed, the thermal conductivity will be greatly reduced, affecting heat dissipation; (3) ) As the power density of the power amplifier chip continues to increase, the water-cooled substrate radiator will eventually be unable to meet the heat dissipation requirements.

Utility model content

Aiming at the deficiencies of the prior art, the utility model proposes a flow liquid full immersion cooling type transmitter power amplifier unit. In addition to the bottom of the power amplifier chip being in good contact with the substrate to dissipate heat, the entire chip is also fully in contact with insulating oil to dissipate heat, which greatly improves the heat dissipation efficiency .

In order to realize the above-mentioned technical solution, the utility model provides a flow liquid full immersion cooling type transmitter power amplifier unit, comprising: a box body; a top cover plate detachably fixed on the top of the box body; The power amplifier chip on the substrate; the signal interface and power interface arranged on the rear side of the box body; the liquid inlet pipe arranged on the back side of the box body; and the liquid outlet pipe arranged on the front side of the box body, the installation of the liquid outlet pipe The height is higher than the installation height of the power amplifier chip in the box, and the outside of the liquid inlet pipe and the liquid outlet pipe are connected by a circulating pump and a pipeline.

In the above technical solution, the power amplifier chip is mounted on the base plate, and the base plate is connected to the box body through a structural member. When the heat dissipation process is performed, the circulation pump is turned on, and the insulating cooling oil used for heat dissipation enters from the liquid inlet pipe on the rear side of the box body. It flows out from the liquid outlet pipe on the front side of the cabinet. Since the installation height of the liquid outlet pipe is higher than that of the power amplifier chip in the cabinet, when the cooling oil flows out from the liquid outlet pipe, it will first contact the power amplifier chip directly and be completely submerged. Then all the heat of the power amplifier chip is taken out, and the heat obtained is dissipated during the external circulation of the insulating cooling oil, and then the cooling oil is circulated for use.

Preferably, the joints of the signal interface, the power interface, the top cover plate and the box body are sealed with a sealing rubber pad, which can prevent liquid leakage.

Preferably, the external connecting pipes of the inlet pipe and the outlet pipe are also provided with a radiator, through which the heat dissipation of the insulating cooling oil during circulation can be accelerated to ensure that the insulating cooling oil remains at a low temperature before recirculation.

Preferably, a filter is also provided on the external connecting pipe of the liquid inlet pipe and the liquid outlet pipe, the filter can remove impurities that may be brought in by the insulating cooling oil during the circulation process, and prevent impurities from being deposited on the power amplifier chip, affecting Normal use of the power amplifier.

The beneficial effects of the flowing liquid fully submerged cooling type transmitter power amplifier unit provided by the utility model are as follows:

(1) The flowing liquid fully submerged cooling transmitter power amplifier unit uses insulating cooling oil as the cooling medium. Since the specific heat capacity of the insulating cooling oil is greater than that of air, the heat dissipation efficiency of liquid cooling is significantly higher than that of air cooling under the same conditions, and the insulating cooling oil The working fluid is in direct contact with heating elements such as chips, increasing the contact area, reducing contact thermal resistance, and significantly improving heat dissipation efficiency;

(2) The flowing liquid full immersion cooling transmitter power amplifier unit uses liquid working medium full immersion plus flow cooling, which reduces power consumption and noise compared with air cooling;

(3) The power amplifier unit of the flowing liquid fully submerged cooling transmitter adopts a sealed box, and all electronic components are submerged in insulating cooling oil and isolated from the outside air, which prevents dust from affecting electronic components such as power amplifier chips, and the power amplifier runs More stable, reliable and longer service life;

(4) The mobile liquid full immersion cooling transmitter power amplifier unit uses liquid working medium full immersion plus flow cooling, the power amplifier is smaller in size, and lighter in weight than the bulky air-cooled radiator.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a sectional view of the utility model.

In the figure: 1. Box body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Top cover plate; 5. Power amplifier chip; 6. Base plate; 7. Signal interface; 8. Power interface.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. All other embodiments obtained by ordinary persons in the art without creative efforts belong to the protection scope of the present utility model.

Embodiment: A transmitter power amplifier unit of a flowing liquid fully submerged cooling type.

Referring to Fig. 1 and Fig. 2, a transmitter power amplifier unit with full immersion cooling of flowing liquid comprises: a cabinet 1; a top cover plate 4 detachably fixed on the top of the cabinet 1; a substrate fixed inside the cabinet 1 6; the power amplifier chip 5 installed on the substrate 6; the signal interface 7 and the power interface 8 arranged on the rear side of the box body 1; the liquid inlet pipe 2 arranged on the back side of the box body 1; The liquid outlet pipe 3, the installation height of the liquid outlet pipe 3 is higher than the installation height of the power amplifier chip 5 in the box body 1, and the liquid inlet pipe 2 and the outside of the liquid outlet pipe 3 are connected by a circulation pump and a pipeline; The joints of the signal interface 7, the power interface 8, the top cover plate 4 and the box body 1 are sealed with a sealing rubber pad; the external connecting pipes of the liquid inlet pipe 2 and the liquid outlet pipe 3 are also provided with a radiator and a filter .

The working principle of the utility model is: the power amplifier chip 5 is installed on the base plate 6, and the base plate 6 is connected with the box body 1 through structural parts; except the top and the position where the signal interface 7 and the power supply interface 8 are installed, the rest of the box body 1 is completely Sealed structure, the liquid inlet pipe 2 and the liquid outlet pipe 3 communicate with a liquid circulation device, and the power generated by the circulation pump promotes the liquid circulation in the closed system, and the heat generated by the power amplifier chip 5 absorbed by the liquid is brought to a larger area The radiator for heat dissipation, the cooled liquid returns to the box again, and so on, the filter can remove the impurities that may be brought in by the insulating cooling oil during the cycle, and prevent the impurities from depositing on the power amplifier chip 5 and affecting the power amplifier. In normal use, the height of the liquid outlet pipe 3 is higher than the highest point of the power amplifier chip 5 to ensure that the insulating cooling oil can completely submerge the power amplifier chip 5; by controlling the flow rate of the circulating pump, it can meet the heat dissipation requirements without going to the chassis 1 External oil spills, the signal interface 7, the power interface 8 and the box body 1 are sealed with sealing rubber pads to prevent liquid leakage; the top cover plate 4 and the box body 1 are connected by screws to facilitate disassembly.

The above description is only a preferred embodiment of the utility model, but the utility model should not be limited to the disclosed content of the embodiment and the accompanying drawings, so any equivalent or completed without departing from the disclosed spirit of the utility model Modifications all fall within the protection scope of the utility model.

Claims (4)

1. a kind of working fluid submerges cooled power amplifier in transmitter unit entirely, it is characterised in that including：

Casing (1)；

It is detachably secured to the lamina tecti (4) at the top of casing (1)；

It is fixed on the internal substrate (6) of casing (1)；

Power amplifier chips (5) on substrate (6)；

It is arranged on the signaling interface (7) and power interface (8) of casing (1) trailing flank；

It is arranged on the feed tube (2) of casing (1) trailing flank；And

The drain pipe (3) of casing (1) leading flank is arranged on, the setting height(from bottom) of the drain pipe (3) is higher than power amplifier chips (5) in case Setting height(from bottom) in body (1), is connected between the feed tube (2) and the outside of drain pipe (3) by circulating pump and pipeline.

2. working fluid as claimed in claim 1 submerges cooled power amplifier in transmitter unit entirely, it is characterised in that：The signal Interface (7), power interface (8), lamina tecti (4) are sealed with casing (1) joint using seal gasket.

3. working fluid as claimed in claim 1 or 2 submerges cooled power amplifier in transmitter unit entirely, it is characterised in that：It is described Radiator is additionally provided with the external connection pipeline of feed tube (2) and drain pipe (3).

4. working fluid as claimed in claim 3 submerges cooled power amplifier in transmitter unit entirely, it is characterised in that：The feed liquor Filter is additionally provided with the external connection pipeline of pipe (2) and drain pipe (3).