Air conditioner

Patent metadata

Field	Value
Publication number	US-12313288-B2
Application number	US-202017909267-A
Country	US
Kind code	B2
Filing date	Dec 10, 2020
Priority date	Mar 4, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

An air conditioner includes an outdoor unit, a first indoor unit having a first indoor heat exchanger connected to the outdoor unit, a first intake duct connected to an inlet opening of the first indoor unit, a first air supply duct guiding air discharged from an outlet opening of the first indoor unit to indoor room, a second indoor unit having a second indoor heat exchanger connected to the outdoor unit, a second intake duct connected to an inlet opening of the second indoor unit and a second air supply duct guiding air discharged from an outlet of the second indoor unit to indoor room. The first indoor heat exchanger and the second indoor heat exchanger include a moisture absorption layer.

First claim

The invention claimed is:

1. An air conditioner comprising:
an outdoor unit comprising an outdoor heat exchanger;
a first indoor unit comprising a first indoor heat exchanger that is connected to the outdoor unit and includes a moisture absorption layer, the first indoor unit having a first inlet opening and a first outlet opening;
a first intake duct connected to the first inlet opening;
a first air supply duct configured to guide air discharged from the first outlet opening to an indoor room;
a second indoor unit comprising a second indoor heat exchanger that is connected to the outdoor unit and includes a moisture absorption layer, the second indoor unit having a second inlet opening and a second outlet opening;
a second intake duct connected to the second inlet opening;
a second air supply duct configured to guide air discharged from the second outlet of the second indoor unit to the indoor room;
a first refrigerant passage that connects the outdoor unit to the first indoor heat exchanger;
a second refrigerant passage that connects the outdoor unit to the second indoor heat exchanger;
a first valve configured to regulate flow of refrigerant in the first refrigerant passage;
a second valve configured to regulate flow of refrigerant in the second refrigerant passage; and
a controller configured to:
based on opening the first valve, close the second valve to block the refrigerant discharged from the outdoor unit from flowing into the second indoor heat exchanger, and
based on closing the first valve, open the second valve to allow the refrigerant discharged from the outdoor unit to flow into the second indoor heat exchanger.

2. The air conditioner of claim 1 , wherein each of the moisture absorption layers of the first and second indoor heat exchangers is configured to discharge moisture at a temperature higher than a threshold temperature and to absorb moisture at a temperature lower than the threshold temperature.

3. The air conditioner of claim 1 , wherein the controller is configured to alternately perform (i) a first cooling cycle for supplying air to the indoor room through the first indoor unit and (ii) a second cooling cycle for supplying air to the indoor room through the second indoor unit.

4. The air conditioner of claim 3 , wherein the first indoor unit is configured to, in the second cooling cycle, heat air discharged from the indoor room and discharge the heated air to an outdoor space, and
wherein the second indoor unit is configured to, in the first cooling cycle, heat air discharged from the indoor room and discharge the heated air to the outdoor space.

5. The air conditioner of claim 1 , wherein the controller is configured to alternately perform (i) a first cooling cycle in which the first indoor heat exchanger defines an evaporator and (ii) a second cooling cycle in which the second indoor heat exchanger defines an evaporator.

6. The air conditioner of claim 5 ,
wherein the controller is configured to:
based on performing the first cooling cycle, open the first valve and close the second valve, and
based on performing the second cooling cycle, close the first valve and open the second valve.

7. The air conditioner of claim 5 , wherein the first indoor unit further comprises a first gas furnace configured to heat air received into the first indoor unit,
wherein the second indoor unit further comprises a second gas furnace configured to heat air received into the second indoor unit, and
wherein the controller is configured to:
based on performing the first cooling cycle, stop operation of the first gas furnace and operate the second gas furnace, and
based on performing the second cooling cycle, operate the first gas furnace and stop operation of the second gas furnace.

8. The air conditioner of claim 5 , wherein the controller is configured to alternately perform the first cooling cycle for a first predetermined time and the second cooling cycle for a second predetermined time.

9. The air conditioner of claim 1 , wherein the controller is configured to alternately perform (i) a first heating cycle for supplying air to the indoor room through the first indoor unit and (ii) a second heating cycle for supplying air to the indoor room through the second indoor unit.

10. The air conditioner of claim 9 , wherein the first indoor unit is configured to, in the second heating cycle, cool air discharged from the indoor room and discharge the cooled air to an outdoor space, and
wherein the second indoor unit is configured to, in the first heating cycle, cool air discharged from the indoor room and discharge the cooled air to the outdoor space.

11. The air conditioner of claim 9 , wherein the first indoor unit further comprises a first gas furnace configured to heat air received into the first indoor unit,
wherein the second indoor unit further comprises a second gas furnace configured to heat air received into the second indoor unit, and
wherein the controller is configured to operate the first gas furnace in the first heating cycle and to operate the second gas furnace in the second heating cycle.

12. The air conditioner of claim 11 ,
wherein the controller is configured to:
based on performing the first heating cycle, close the first valve and open the second valve, and
based on performing the second heating cycle, open the first valve and close the second valve.

13. The air conditioner of claim 11 , wherein the first indoor heat exchanger is configured to define an evaporator in the second heating cycle,
wherein the second indoor heat exchanger is configured to define an evaporator in the first heating cycle, and
wherein the controller is configured to stop operation of the second gas furnace in the first heating cycle and to stop operation of the first gas furnace in the second heating cycle.

14. The air conditioner of claim 1 , further comprising:
a main intake duct connected to the first intake duct and the second intake duct;
a main exhaust duct that connects the main intake duct to the indoor room, the first intake duct, and the second intake duct; and
an intake damper disposed at a position to which the first and second intake ducts, the main intake duct, and the main exhaust duct are connected,
wherein the intake damper is configured to:
selectively connect the main intake duct to one of the first intake duct or the second intake duct, and
selectively connect the main exhaust duct to the other of the first intake duct or the second intake duct.

15. The air conditioner of claim 14 ,
wherein the controller is configured to control the intake damper, and
wherein the controller is configured to alternately perform (i) a first cycle for supplying air to the indoor room through the first indoor unit and (ii) a second cycle for supplying air to the indoor room through the second indoor unit.

16. The air conditioner of claim 15 , wherein the controller is configured to:
based on performing the first cycle, control the intake damper to connect the main intake duct to the first intake duct and to connect the main exhaust duct to the second intake duct; and
based on performing the second cycle, control the intake damper to connect the main intake duct to the second intake duct and to connect the main exhaust duct to the first intake duct.

17. The air conditioner of claim 1 , further comprising:
a first air supply damper disposed at the first air supply duct and configured to open and close the first air supply duct; and
a second air supply damper disposed at the second air supply duct and configured t

Assignees

• Lg Electronics Inc

Inventors

• Hwang Junho
• Seo Beomsoo
• Kwon Youngheon
• Yoon Joonshik
• Yoon Pilhyun

Classifications

• F24F2221/34

  Heater, e.g. gas burner, electric air heater · CPC title

• F24F2203/028

  using a solid absorbing medium · CPC title

• F24F3/1411

  by absorbing or adsorbing water, e.g. using an hygroscopic desiccant · CPC title

• F24F11/61

  using timers · CPC title

• F24F11/84

  using valves · CPC title