Ceiling type indoor unit of air conditioner

Patent metadata

Field	Value
Publication number	US-11333376-B2
Application number	US-201916718794-A
Country	US
Kind code	B2
Filing date	Dec 18, 2019
Priority date	Dec 18, 2018
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

According to the present disclosure, it is determined whether or not the room is heated according to a temperature difference between a room temperature Tp and a set temperature Ts, and even when there is little or no heating load due to the temperature difference between the room temperature Tp and the set temperature Ts, the floor heating is performed by determining a temperature difference between the room temperature Tp and a floor temperature Tb.

First claim

What is claimed is:

1. A control method of a ceiling type indoor unit including a case which is installed to be suspended to a ceiling of a room, includes a suction port formed on a bottom surface, and includes a first discharge port and a third discharge port disposed to face each other based on the suction port and a second discharge port and a fourth discharge port disposed to face each other based on the suction port,
a first vane module which is disposed in the first discharge port, constitutes one of a first discharge pair, and discharges air in a first discharge direction,
a second vane module which is disposed in the second discharge port, constitutes one of a second discharge pair, and discharges air in a second discharge direction,
a third vane module which is disposed in the third discharge port, constitutes the other one of the first discharge pair, and discharges air in a third discharge direction, and
a fourth vane module which is disposed in the fourth discharge port, constitutes the other one of the second discharge pair, and discharges air in a fourth discharge direction,
the control method comprising:
a step S 10 of turning on a cooling mode;
a temperature setting step S 12 of, after Step S 10 , sensing a room temperature Tp and a floor temperature Tb and receiving a set temperature Ts;
a step S 14 of, after Step S 12 , comparing the room temperature Tp and the set temperature with each other;
a step S 20 of, in a case where the room temperature Tp is less than the set temperature Ts, operating at least on of the first discharge pair and the second discharge pair at one inclination angle;
a step S 32 of, after Step S 20 , comparing a temperature difference between the room temperature Tp and the floor temperature Tb with a first reference value A;
a step S 34 of, in a case where the temperature difference exceeds the first reference value A after Step S 32 , operating at least one of the first discharge pair and the second discharge pair at another inclination angle;
a step S 100 of, after Step S 34 , determining whether or not the heating mode is turned off; and
a step of, in a case where Step S 100 is satisfied, ending the heating mode, and
in a case where the room temperature Tp is equal to or more than the set temperature Ts after Step S 14 , the step proceeds to Step S 32 , and another inclination angle is disposed more vertically in an up-down direction than the one inclination angle.

2. The control method of claim 1 , wherein in a case where the temperature difference is equal to or less than the first reference value A after Step S 32 , the step proceeds to Step S 100 , and in a case where Step S 100 is not satisfied, the step is returned to a step before Step S 14 .

3. The control method of claim 1 , wherein in Step S 20 , both the first discharge pair and the second discharge pair is operated at the one inclination angle.

4. The control method of claim 1 , further comprising:
a step S 30 of, after Step S 20 , determining whether or not Step S 20 exceeds a first predetermined time,
wherein in a case where the first predetermined is satisfied, the step proceeds to Step S 32 .

5. The control method of claim 1 , further comprising:
a step S 36 of, after Step S 34 , determining whether or not Step S 34 exceeds a second predetermined time,
wherein in a case where the second predetermined is satisfied, the step is returned to Step S 32 .

6. The control method of claim 1 , wherein in a case where the temperature difference is equal to or less than the first reference value after Step S 32 , the first discharge pair and the second discharge pair are operated at inclination angles different from each other.

7. The control method of claim 1 , further comprising:
a first dynamic heating step S 40 of, in a case where the temperature difference is equal to or less than the first reference value after Step S 32 , operating the first discharge pair and the second discharge pair at inclination angles different from each other; and
a second dynamic heating step S 80 of, after Step S 40 , alternating the inclation angles of the first discharge pair and the second discharge pair,
wherein in a case where Step S 80 is satisfied, the step proceeds to Step S 100 .

8. The control method of claim 1 , further comprising:
a step S 60 of, in a case where Step S 50 is satisfied, operating the first discharge pair and the second discharge pair at the other inclination angle which is more horizontal than the one inclination angle,
wherein the other inclination angle is disposed more horizontally than the one inclination angle.

9. The control method of claim 1 , further comprising:
a step S 70 of determining whether or not Step S 60 exceeds a third predetermined time,
wherein in a case where Step S 70 is satisfied, the step proceeds to Step S 80 .

10. The control method of claim 1 , wherein each vane module includes a first vane configured to be disposed in the discharge port, a second vane configured to be disposed in the discharge port, a vane motor configured to be assembled to the case and supply a driving force to the first vane and the second vane, a drive link configured to be assembled to be rotatable relative to the case, to be coupled to the vane motor, and transmit the driving force of the vane motor to the first vane and the second vane, a first vane line configured to be assembled to be rotatable relative to the case and the first vane, and a second vane link configured to be assembled to be rotatable relative to the drive link and the second vane.

11. The control method of claim 10 , wherein when the one inclination angle is provided, a rear end of the first vane is located higher than a front end of the second vane.

12. The control method of claim 10 , wherein in the one inclination angle, an inclination of the second vane is more vertically in an up-down direction than an inclination of the first vane.

13. The control method of claim 12 , wherein in another inclination angle, the inclination of the second vane is more vertically in the up-down direction than the inclination of the first vane.

14. The control method of claim 10 , wherein in the one inclination angle, the inclination of the second vane is more vertically in the up-down direction than the inclination of the first vane,
in another inclination angle, the inclination of the second vane is more vertically in the up-down direction than the inclination of the first vane,
the inclination of the first vane at another inclination angle is more vertically in the up-down direction than the inclination of the first vane at the one inclination angle, and
the inclination of the second vane at another inclination angle is more vertically in the up-down direction than the inclination of the second vane at the one inclination angle.

15. The control method of claim 10 , wherein in Step S 20 , both the first discharte pair and the second discharge pair are operated at the one inclination angle, and
in a case where the temperature difference is equal to or less than the first reference value A after Step S 32 , the step proceeds to Step S 100 , and in a case where Step S 100 is not satisfied, the step proceeds to a step before Step S 14 .

16. The control method of claim 15 , wherein in a case where the temperature difference is equal to or less than the first reference value A after Step S 32 , the first discharge pair and the second discharge pair are operated at inclination angles different from each other.

17. The control method of claim 15 , further comprising

Assignees

• Lg Electronics Inc

Inventors

• Lee Juyoun
• Choi Jaeheuk

Classifications

• F24F1/0317

  suspended from the ceiling · CPC title

• F24F2013/0616

  Outlets that have intake openings · CPC title

• F24F1/0014

  having two or more outlet openings · CPC title

• F24F11/79

  for controlling the direction of the supplied air · CPC title

• F24F1/0047 Primary

  mounted in the ceiling or at the ceiling · CPC title