Cooling machine

Patent metadata

Field	Value
Publication number	US-11768015-B2
Application number	US-202117148960-A
Country	US
Kind code	B2
Filing date	Jan 14, 2021
Priority date	Jan 15, 2020
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

The present disclosure relates to an absorption cooling machine including an absorber, a first regenerator, a second regenerator, a condenser, an expansion device, and an evaporator, and relates to a cooling machine that connects a bypass collection pipe that guides an absorbent flowing back into the second regenerator to be collected into an absorber to a second collection pipe, in order to prevent the water level of the second regenerator from being raised as the absorbent cannot be collected by the absorber and flows back to the second regenerator, due to the pressure difference between an absorbent separated from the first regenerator and collected into the absorber through the first collection pipe, and an absorbent separated from the second regenerator and collected into the absorber through the second collection pipe.

First claim

What is claimed is:

1. A cooling machine comprising:
an absorber to generate an absorption solution by mixing a refrigerant and an absorbent;
a first regenerator to separate the absorption solution discharged from the absorber into the refrigerant and the absorbent;
a second regenerator to separate the absorption solution discharged from the absorber into the refrigerant and the absorbent;
a first collection pipe through which the absorbent discharged from the first regenerator flows, and is connected to the absorber; and
a second collection pipe through which the absorbent discharged from the second regenerator flows,
wherein the absorbent discharged from the first regenerator has a higher pressure than the absorbent discharged from the second regenerator,
wherein a confluence point where the absorbent flowing through the second collection pipe converges with the absorbent flowing through the first collection pipe is formed,
further comprising a bypass collection pipe branched between the second regenerator and the confluence point and connected to the absorber.

2. The cooling machine of claim 1 , wherein the bypass collecton pipe is connected to a bypass decompression device that lowers a pressure of the absorbent flowing through the bypass collection pipe.

3. The cooling machine of claim 1 , wherein the second collection pipe connected to the second regenerator and extended in a direction of gravity, and has a branch point branched from the second collection pipe to the bypass collection pipe,
wherein the branch port is formed at a lower position than the second regenerator, and the confluence point is formed at a position lower than the branch point.

4. The cooling machine of claim 1 , wherein the bypass collection pipe is connected to a bypass valve to control a flow rate of the absorbent flowing through the bypass collection pipe.

5. The cooling machine of claim 1 , wherein the bypass collection pipe is connected to a bypass pump to extrude the absorbent flowing through the bypass collection pipe.

6. The cooling machine of claim 1 , further comprising a water level sensor to measure a water level of the second regenerator,
wherein the bypass collection pipe is connected to a bypass valve for adjusting a flow rate of the absorbent flowing through the bypass collection pipe and adjusting opening degree according to the water level measured by the water level sensor, and
wherein the bypass collection pipe is connected to a bypass pump for extruding the absorbent flowing through the bypass collection pipe and adjusting an extrusion amount of the absorbent according to the water measured by the water level sensor.

7. The cooling machine of claim 1 , further comprising a drain pipe which connected to the second regenerator, and through which the absorbent flows,
wherein the drain pipe is connected to a drain valve for controlling a flow rate of the absorbent flowing through the drain pipe, and
wherein the absorbent flowing through the drain pipe is converged with the bypass collection pipe.

8. The cooling machine of claim 1 , further comprising a drain pipe which is connected to the second regenerator, and through which the absorbent flows,
wherein the drain pipe is connected to a drain pump for extruding the absorbent flowing through the drain pipe, and
wherein the absorbent flowing through the drain pipe is converged with the bypass collection pipe.

9. The cooling machine of claim 1 , further comprising:
a water level sensor to measure a water level of the second regenerator; and
a drain pipe which is connected to the second regenerator, and through which the absorbent flows,
wherein the drain pipe is connected to a drain valve for controlling a flow rate of the absorbent flowing through the drain pipe, and adjusting an opening degree according to the water level measured by the water level sensor, and
wherein the drain pipe is connected to a drain pump for extruding the absorbent flowing through the drain pipe and adjusting an extrusion amount of the absorbent according to the water level measured by the water level sensor,
wherein the absorbent flowing through the drain pipe is converged with the bypass collection pipe.

10. The cooling machine of claim 1 , wherein the second collection pipe is connected to a backflow prevention valve adjusting a flow rate of the absorbent flowing through the second collection pipe.

11. The cooling machine of claim 1 , further comprising a water level sensor to measure a water level of the second regenerator,
wherein the second collection pipe is connected to a backflow prevention valve adjusting a flow rate of the absorbent flowing through the second collection pipe and adjusting an opening degree according to the water level measured by the water level sensor.

12. The cooling machine of any one of claims 1 to 11 , further comprising a third regenerator to separate the absorption solution discharged from the absorber into the refrigerant and the absorbent,
wherein the third regenerator separates the refrigerant and the absorbent under a lower temperature and lower pressure than the first regenerator and the second regenerator.

Assignees

• Lg Electronics Inc

Inventors

• Lee Heungju
• Cho Yongsun
• Lee Jaeseo

Classifications

• F25B15/008 Primary

  with multi-stage operation (F25B15/006 takes precedence) · CPC title

• F25B41/40

  Fluid line arrangements · CPC title

• F25B2315/005

  Regeneration · CPC title

• F25B2600/05

  Refrigerant levels · CPC title

• F25B15/02 Primary

  without inert gas ({F25B15/004, F25B15/006, F25B15/008}, F25B15/12, F25B15/14, F25B15/16 take precedence) · CPC title