US-12619265-B2 - Liquid level controlling apparatus

US12619265B2US 12619265 B2US12619265 B2US 12619265B2US-12619265-B2

Abstract

A liquid level controlling system includes a main sink, a storage sink and a connection tube. The main sink includes a transmission port and a first liquid level detector. The transmission port is formed on a bottom of the main sink. The first liquid level detector is disposed on a top of the main sink. The storage sink includes a liquid outlet, a liquid inlet and a second liquid level detector. The connection tube is disposed between the main sink and the storage sink. The connection tube includes an rehydration tube and an drain tube. Two ends of the rehydration tube are respectively connected to the transmission port and the liquid outlet. Two ends of the drain tube are respectively connected to the transmission port and the liquid inlet.

Inventors

Kai-Yang Tung
Hung-Ju Chen

Assignees

Inventec (Pudong) Technology Corp.
INVENTEC CORPORATION

Dates

Publication Date: 20260505
Application Date: 20221114
Priority Date: 20220907

Claims (15)

1 . A liquid level controlling system comprising: a main sink comprising a transmission port and a first liquid level detector, the transmission port being disposed on a bottom portion of the main sink, the first liquid level detector being disposed on a top portion of the main sink; a storage sink comprising a liquid outlet, a liquid inlet and a second liquid level detector; a connection tube disposed between the main sink and the storage sink, the connection tube comprising: a rehydration tube, two ends of the rehydration tube being respectively connected to the transmission port and the liquid outlet; and a drain tube, two ends of the drain tube being respectively connected to the transmission port and the liquid inlet; a rehydration pump disposed on the rehydration tube and configured to transmit liquid from the storage sink to the main sink; a rehydration controller being a control circuit disposed on the rehydration tube and electrically coupled to the rehydration pump and configured to turn on or turn off the rehydration pump; a drain pump disposed on the drain tube and configured to transmit liquid from the main sink to the storage sink; and a drain controller being another control circuit disposed on the drain tube and electrically coupled to the drain pump and configured to turn on or turn off the drain pump.
2 . The liquid level controlling system of claim 1 , wherein the first liquid level detector is a continuous liquid level gauge adapted to detect a liquid level upper limit and a liquid level lower limit inside the main sink.
3 . The liquid level controlling system of claim 1 , wherein the first liquid level detector comprises a first liquid level gauge and a second liquid level gauge respectively disposed on a high position and a low position inside the main sink, and adapted to detect a liquid level upper limit and a liquid level lower limit inside the main sink.
4 . The liquid level controlling system of claim 1 , wherein position of the liquid outlet is lower than position of the liquid inlet.
5 . The liquid level controlling system of claim 1 , wherein the second liquid level detector is a continuous liquid level gauge adapted to detect a liquid level upper limit and a liquid level lower limit inside the storage sink.
6 . The liquid level controlling system of claim 1 , wherein the second liquid level detector comprises a first liquid level gauge and a second liquid level gauge respectively disposed on a high position and a low position inside the storage sink, and adapted to detect a liquid level upper limit and a liquid level lower limit inside the storage sink.
7 . The liquid level controlling system of claim 1 , wherein the liquid level controlling system further comprises a plurality of main sinks and a plurality of connection tubes, each connection tube is connected between the storage sink and a corresponding main sink of the plurality of main sinks.
8 . The liquid level controlling system of claim 1 , further comprising: an operation processor electrically connected to the drain controller, the operation processor analyzing detection results of the first liquid level detector and the second liquid level detector, and output a corresponding control command to the rehydration controller for driving the rehydration pump or to the drain controller for driving the drain pump.
9 . The liquid level controlling system of claim 8 , wherein the operation processor is adapted to not turn on the rehydration pump and the drain pump when the first liquid level detector does not output a first lower limit alarm and a first upper limit alarm.
10 . The liquid level controlling system of claim 8 , wherein the operation processor is adapted to turn on the rehydration pump via the rehydration controller when the first liquid level detector outputs a first lower limit alarm and the second liquid level detector does not output a second lower limit alarm.
11 . The liquid level controlling system of claim 10 , wherein the operation processor is adapted to turn off the rehydration pump via the rehydration controller and output a low liquid level alarm of the main sink and the storage sink when the first liquid level detector outputs the first lower limit alarm and the second liquid level detector outputs the second lower limit alarm.
12 . The liquid level controlling system of claim 10 , wherein the operation processor is adapted to turn off the rehydration pump via the rehydration controller and end a liquid level control process of the main sink when the first liquid level detector does not output the first lower limit alarm.
13 . The liquid level controlling system of claim 8 , wherein the operation processor is adapted to turn on the drain pump via the drain controller when the first liquid level detector outputs a first upper limit alarm and the second liquid level detector does not output a second upper limit alarm.
14 . The liquid level controlling system of claim 13 , wherein the operation processor is adapted to turn off the drain pump via the drain controller and output a high liquid level alarm of the main sink and the storage sink when the first liquid level detector outputs the first upper limit alarm and the second liquid level detector outputs the second upper limit alarm.
15 . The liquid level controlling system of claim 13 , wherein the operation processor is adapted to turn off the drain pump via the drain controller and end a liquid level control process of the main sink when the first liquid level detector does not output the first upper limit alarm.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid level controlling system, and more particularly, to a liquid level controlling apparatus with preferred liquid level controllability. 2. Description of the Prior Art The conventional immersion cooling system includes a two-phase cooling system with phase change and a single-phase cooling system without the phase change. The conventional immersion cooling systems need to ensure that the heating component is immersed in the non-conductive liquid; otherwise heat from the heating component cannot be exchanged with the non-conductive liquid for cooling. The liquid level of the cooling liquid in the storage tank of the conventional immersion cooling system is dropped when the heating component is removed from the storage tank; however, if additional cooling liquid is injected into the storage tank, or another heating component with a larger volume is placed in the storage tank, the liquid level of the cooling liquid in the storage tank exceeds an original standard. The liquid level rising phenomenon increases possibility of leaking the cooling liquid. The cooling liquid may easily contact the condenser inside the immersion cooling system due to the excessive liquid level, and heat dissipation efficiency of the condenser is decreased accordingly. For controlling the liquid level in the storage tank, the conventional immersion cooling system disposes a liquid rehydration opening on the bottom of the storage tank, and further disposes a liquid drain opening on the top of the storage tank. The liquid level upper limit gauge and the liquid level lower limit gauge are disposed around the liquid drain opening. If the liquid level in the storage tank is lower than the lower limit of the liquid level, the pump is turned on to inhale the cooling liquid from the liquid rehydration opening; if the liquid level in the storage tank is higher than the upper limit of the liquid level, the cooling liquid is automatically drained from the storage tank through the liquid drain opening due to gravity. However, the heating components with different volumes correspond to different liquid levels of the cooling liquid inside the storage tank; position of the liquid level upper limit gauge and the liquid level lower limit gauge is limited to the fixed position of the liquid drain opening, and cannot be flexibly changed in accordance with the heating component with a specific volume in the storage tank. SUMMARY OF THE INVENTION The present invention provides a liquid level controlling apparatus with preferred liquid level controllability for solving above drawbacks. According to the claimed invention, a liquid level controlling system includes a main sink, a storage sink and a connection tube. The main sink includes a transmission port and a first liquid level detector. The transmission port is disposed on a bottom portion of the main sink, and the first liquid level detector is disposed on a top portion of the main sink. The storage sink includes a liquid outlet, a liquid inlet and a second liquid level detector. The connection tube is disposed between the main sink and the storage sink. The connection tube includes a rehydration tube and a drain tube. Two ends of the rehydration tube are respectively connected to the transmission port and the liquid outlet. Two ends of the drain tube are respectively connected to the transmission port and the liquid inlet. According to the claimed invention, the liquid level controlling system further includes a rehydration pump and a rehydration controller. The rehydration pump is disposed on the rehydration tube and adapted to transmit liquid from the storage sink to the main sink. The rehydration controller is disposed on the rehydration tube and adapted to turn on or turn off the rehydration pump. The liquid level controlling system further includes a drain pump and a drain controller. The drain pump is disposed on the drain tube and adapted to transmit liquid from the main sink to the storage sink. The drain controller is disposed on the drain tube and adapted to turn on or turn off the drain pump. The liquid level controlling system of the present invention can dispose only one transmission port on the bottom portion of the main sink, and utilize the Y-type connection tube to connect the main sink and the storage sink, so that the cooling liquid can flow between the main sink and the storage sink through the rehydration tube and the drain tube of the connection tube. Because the transmission port can be located on the bottom portion of the main sink, position of the first liquid level detector inside the main sink can be freely changed in accordance with an actual demand, and the liquid level controlling system can be applied for a heating device with any volume. When the heating device with the unknown volume is put into the main sink, the liquid level controlling system can analyze the detection resul