Absorption refrigeration machine

Patent metadata

Field	Value
Publication number	US-10208989-B2
Application number	US-201615256894-A
Country	US
Kind code	B2
Filing date	Sep 6, 2016
Priority date	Jan 14, 2016
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

An absorption refrigeration machine may include a first regenerator for primarily regenerating an absorbing liquid absorbing a refrigerant; a second regenerator for secondarily regenerating the absorbing liquid primarily regenerated from the first regenerator; an auxiliary absorber provided with the second regenerator, to allow an auxiliary absorbing liquid to absorb the refrigerant; and an auxiliary regenerator for regenerating the auxiliary absorbing liquid carrying the refrigerant in the auxiliary absorber.

First claim

What is claimed is:

1. An absorption refrigeration machine comprising:
a first absorber configured to cause a first absorbing liquid to absorb a refrigerant;
a first regenerator coupled to the first absorber to receive the first absorbing liquid, wherein the first regenerator is configured to cause the first absorbing liquid to release at least a portion of the absorbed refrigerant;
a second regenerator coupled to the first regenerator to receive the first absorbing liquid, wherein the second regenerator is configured to be selectively activated to cause the first absorbing liquid to release another portion of the absorbed refrigerant;
a second absorber coupled to the second regenerator, wherein when the second regenerator is activated, the second absorber is configured to cause a second absorbing liquid to absorb the refrigerant;
a third regenerator coupled to the second absorber, wherein the third regenerator is configured to receive the second absorbing liquid and cause the second absorbing liquid to release the absorbed refrigerant;
a condenser configured to capture the released refrigerant from the first regenerator and the third regenerator; and
a flash tank coupled to the condenser, the first absorber and the second absorber wherein the flash tank is configured to receive the refrigerant from the condenser and to forward the received refrigerant to at least one of the first absorber or the second absorber.

2. The absorption refrigeration machine according to claim 1 , wherein the flash tank stores a first portion of the refrigerant in a liquid form and a second portion of the refrigerant in a gaseous form, and wherein the flash tank provides the refrigerant in the liquid form to the first absorber and the refrigerant in the gaseous form to the second absorber.

3. The absorption refrigeration machine according to claim 1 , further comprising a tube that transports a cooling fluid between the first absorber, the second absorber, and the condenser, wherein a first heat exchange between the cooling fluid and the first absorbing liquid in the first absorber causes the first absorbing liquid to absorb the refrigerant, a second heat exchange between the cooling fluid and the second absorbing liquid in the second absorber causes the second absorbing liquid to absorb the refrigerant, and a third heat exchange between the cooling fluid and the refrigerant in the condenser converts the refrigerant from a gaseous form to a liquid form.

4. The absorption refrigeration machine according to claim 1 , wherein the second regenerator includes a first tube that transports a warming fluid when the second regenerator is activated, and an injector the directs the first absorbing liquid to the first tube,
wherein when the second regenerator is activated and the first tube transports the warming fluid, a heat exchange between the first absorbing liquid and the warming fluid causes the first absorbing liquid to release the absorbed refrigerant, and
wherein the absorption refrigeration machine further comprises a second tube that bypasses the second regenerator and transports the warming fluid away from the first tube when the second regenerator is deactivated.

5. The absorption refrigeration machine according to claim 4 , further comprising a valve,
wherein the valve includes a first port coupled to the first tube, a second port configured to receive the warming fluid, and a third port coupled to the second tube, wherein the first and second ports are opened and the third port is closed when the second regenerator is activated to supply the warming fluid to the first tube, and wherein the second and third ports are opened and the first port is closed when the second regenerator is deactivated to bypass the first tube and direct the warming fluid to the second tube.

6. The absorption refrigeration machine according to claim 5 , wherein the absorption refrigeration machine further comprises a third tube that receives the warming fluid from the second port and forwards the warming fluid to the first and third regenerators for heat exchange with the first absorbing liquid and the second absorbing liquid to cause the absorbed refrigerant to be released from the first absorbing liquid and the second absorbing liquid.

7. The absorption refrigeration machine according to claim 1 , wherein the second regenerator is provided in an upper portion of a cavity included in the absorption refrigeration machine, and the second absorber is provided in a lower portion of the cavity.

8. The absorption refrigeration machine according to claim 7 , further comprising a tray provided in the cavity and between the second regenerator and the second absorber, wherein the tray is configured to capture the first absorbing liquid from the second regenerator.

9. The absorption refrigeration machine according to claim 8 , further comprising:
a tube connecting the first absorber and the tray, and
a pump provided in the tube to move the first absorbing liquid from the tray to the first absorber via the tube.

10. The absorption refrigeration machine according to claim 1 , further comprising:
a tube connecting the second absorber and the third regenerator, and
a pump disposed in the tube to selectively move the second absorbing liquid between the second absorber and the third regenerator via the tube, wherein the pump is activated when the second regenerator is activated.

11. A method for controlling an absorption refrigeration machine, the method comprising:
removing, by a first regenerator included in the absorption refrigeration machine, a first portion of a dissolved refrigerant from a first absorbing liquid, wherein the refrigerant is absorbed by the first absorbing liquid in a first absorber included in the absorption refrigeration machine, and wherein a second regenerator included in the absorption refrigeration machine selectively removes a second portion of the dissolved refrigerant from the first absorbing liquid;
determining whether a second absorbing liquid is flowing between a second absorber and a third regenerator included in the absorption refrigeration machine; and
controlling a flow of a warming fluid into the second regenerator based on whether the second absorbing liquid is flowing between the second absorber and the third regenerator,
wherein the second regenerator includes a first tube that transports the warming fluid when the warming fluid flows into the second regenerator,
wherein the absorption refrigeration machine further comprises a second tube that bypasses the second regenerator and transports the warming fluid away from the first tube when the warming fluid does not flow into the second regenerator, and
wherein controlling the flow of the warming fluid into the second regenerator includes:
directing the warming fluid to the first tube and into the second regenerator when the second absorbing liquid flows between the second absorber and the third regenerator, and
directing the warming fluid to the second tube and away from the second regenerator when the second absorbing liquid does not flow between the second absorber and the third regenerator.

12. The method according to claim 11 , wherein the absorption refrigeration machine further comprises a valve provided in the first and second tubes, and wherein controlling the flow of the warming fluid includes configuring the valve to direct the warming fluid to one of the first tube or the second tube based on whether the second absorbing liquid is flowing between the second absorber and the third regenerator.

13. The method according to claim 12 , wherein the valve includes a first port coupled to the first tube, a

Assignees

• Lg Electronics Inc

Inventors

• Cho Hyunuk
• Jeong Jinhee
• Nam Sangchul
• Lee Wansoo
• Lee Heungju
• Cho Yongsun

Classifications

• E03C1/021

  Devices for positioning or connecting of water supply lines (connection to the tap body E03C1/0403) · CPC title

• E03C1/0403 Primary

  Connecting the supply lines to the tap body · CPC title

• Y02B30/62

  Absorption based systems · CPC title

• F25B15/008

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

• F25B15/12 Primary

  with resorber ({F25B15/004, F25B15/006, F25B15/008}, F25B15/14 take precedence) · CPC title