System for ventilation, dehumidification, and cooling

Patent metadata

Field	Value
Publication number	US-12135142-B2
Application number	US-202117546220-A
Country	US
Kind code	B2
Filing date	Dec 9, 2021
Priority date	Dec 11, 2020
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A system for ventilation, dehumidification, and cooling includes an outdoor unit dehumidifying and cooling introduced outside air; and an indoor unit connected to the outdoor unit to perform ventilation, in which the outdoor unit includes a dehumidification rotor, an evaporative cooler, an evaporative condenser, a ventilation damper, a heating unit, and a controller operating and stopping at least one of the dehumidification rotor, the evaporative cooler, the evaporative condenser, the ventilation damper, or the heating unit.

First claim

What is claimed is:

1. A system for ventilation, dehumidification, and cooling, wherein the system comprising:
an outdoor unit dehumidifying and cooling introduced outside air; and
an indoor unit connected to the outdoor unit to perform ventilation,
wherein the outdoor unit includes:
a first flow path connecting an outside and an indoor space and on which an evaporative cooler is disposed;
a second flow path connecting the outside or the indoor space and a dehumidification rotor and on which a heating unit is disposed;
a third flow path connecting the evaporative cooler and the outside;
a fourth flow path connecting an evaporative condenser and the outside;
the dehumidification rotor rotating in a first region provided on the first flow path and a second region provided on the second flow path, dehumidifying the first region, and regenerated in the second region;
the evaporative cooler including a dry channel provided on the first flow path and a wet channel provided on the third flow path and to which water is sprayed by a first water injection module, and cooling air passing through the dehumidification rotor;
the evaporative condenser through which the air passing through the dry channel of the evaporative cooler passes on the fourth flow path and into which the water is sprayed by a second water injection module;
a ventilation damper provided on the first flow path and controlling introduction of the air passing through the evaporative cooler into the indoor space; and
the heating unit provided on the second flow path on an upstream side of the second region and heating the air moving to the second region;
wherein at least one of the dehumidification rotor, the evaporative cooler, the evaporative condenser, the ventilation damper, or the heating unit is controlled to be operated or stopped.

2. The system of claim 1 , wherein the third flow path is branched from the first flow path and connected to the outside through the evaporative cooler, and
the fourth flow path is branched from the first flow path and connected to the outside through the evaporative condenser.

3. The system of claim 1 , wherein one ends of the third flow path and the fourth flow path are connected to each other and connected to the outside so that the air flowing on the third flow path and the air flowing on the fourth flow path join and are discharged together to the outside.

4. The system of claim 1 , wherein the evaporative condenser is connected to an evaporator in the indoor unit through a compressor.

5. The system of claim 1 , further comprising:
an OA ventilation damper controlling introduction of the outside air into the second flow path; and
an RA ventilation damper controlling discharging of indoor air to the outside.

6. The system of claim 5 , further comprising:
a bleed fan provided on the third flow path and discharging the air passing through the wet channel to the outside;
a condensing fan discharging the air passing through the evaporative condenser to the outside;
a dehumidification fan provided on the first flow path and making the air passing through the first region of the dehumidification rotor flow to the indoor space; and
a regeneration fan provided on the second flow path and discharging the air passing through the second region to the outside.

7. The system of claim 6 , wherein when the ventilation-dehumidification-cooling mode is activated, the dehumidification rotor, the dehumidification fan, the evaporative cooler, and the evaporative condenser are operated, and the ventilation damper is opened to supply low-temperature dehumidified air into the indoor space through the first flow path, continuously the heating unit and the regeneration fan are operated, and the OA ventilation damper and the RA ventilation damper are opened, and the bleed fan and the condensing fan are operated to discharge the air discharged from the wet channel of the evaporative cooler and the evaporative condenser to the outside through the third flow path and the fourth flow path.

8. The system of claim 6 , wherein the system is operable in a cooling mode, and when the cooling mode is activated, the ventilation damper is closed to block the introduction of air into the indoor space, the dehumidification rotor, the dehumidification fan, the evaporative cooler, and the evaporative condenser are operated, the OA ventilation damper is opened and the RA ventilation damper is closed to supply only the outside air to the second flow path, the heating unit and the regeneration fan are operated, and the bleed fan and the condensing fan are operated to discharge the air discharged from the wet channel of the evaporative cooler and the evaporative condenser to the outside through the third flow path and the fourth flow path.

9. The system of claim 6 , wherein the system is operable in a ventilation-dehumidification mode, and when the ventilation-dehumidification mode is activated, the ventilation damper is opened to supply the air to the indoor space, the dehumidification rotor, the dehumidification fan, and the evaporative cooler are operated, the evaporative condenser is stopped, the OA ventilation damper is closed and the RA ventilation damper is opened to supply only air returning from the indoor space to the second flow path, and the heating unit and the regeneration fan are operated.

10. The system of claim 9 , wherein the system is operable in a dehumidification-ventilation mode, and when the dehumidification-ventilation mode is activated, only the OA ventilation damper is additionally opened and other components are controlled in the same manner as in the ventilation-dehumidification mode.

11. The system of claim 10 , wherein in the ventilation-dehumidification mode and the dehumidification-ventilation mode, weak cooling is incidentally undertaken by the evaporative cooler that is being operated.

12. The system of claim 6 , wherein the system is operable in an air-cleaning-ventilation mode, and when the air-cleaning-ventilation mode is activated, the dehumidification rotor and the dehumidification fan are operated and the evaporative cooler and the evaporative condenser are stopped, the ventilation damper is opened to supply the air to the indoor space, the OA ventilation damper is closed and the RA ventilation damper is opened to supply only air returning from the indoor space to the second flow path, the regeneration fan is operated, and the heating unit is stopped.

13. The system of claim 6 , wherein the system is operable in an air-cleaning mode, and when the air-cleaning mode is activated, the outdoor unit is stopped and the indoor unit is operated to supply the air to the indoor space through an internal filter of the indoor unit.

14. The system of claim 6 , wherein the system is operable in a dehumidification mode, and when the dehumidification mode is activated, the ventilation damper is closed to block the introduction of air into the indoor space, the dehumidification rotor, the dehumidification fan, and the evaporative cooler are operated, the OA ventilation damper is opened and the RA ventilation damper is closed to supply only the outside air to the second flow path, the heating unit and the regeneration fan are operated, and the bleed fan and the condensing fan are operated to discharge the air discharged from the wet channel of the evaporative cooler and the evaporative condenser to the outside through the third flow path and the fourth flow path.

15. The system of claim 6 , wherein for additional dehumidification, the evaporative condenser is additionally operated, and a refrigerant cycle including the evaporative co

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Lee Myoung Seop
• Jang Kyung Chang
• Kim Seon Won
• Kim Ho Min

Classifications

• F24F11/74

  for controlling air flow rate or air velocity · CPC title

• F24F2203/1032

  Desiccant wheel · CPC title

• F24F2003/1464

  using rotating regenerators · CPC title

• F24F5/0035

  using evaporation · CPC title

• F24F1/0087

  with humidification means · CPC title