Clothes treating apparatus and operating method thereof

Patent metadata

Field	Value
Publication number	US-9580857-B2
Application number	US-201414579638-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Sep 30, 2010
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A clothes treating apparatus including a drum, an air suction duct forming a flow path of air introduced into the drum, an auxiliary fan introducing air into the air suction duct, an air exhaustion duct forming a flow path of air exhausted from the drum, a main fan exhausting air to the air exhaustion duct from the drum, a condenser heating air sucked into the drum through the air suction duct, an evaporator cooling air exhausted from the drum through the air exhaustion duct, and a compressor and an expander forming a heat pump together with the condenser and the evaporator. The method includes measuring a discharge side pressure of the compressor, and comparing the measured discharge side pressure with a maximum allowable pressure, and determining that the auxiliary fan does not operate when the discharge side pressure is more than the maximum allowable pressure.

First claim

What is claimed is:

1. A clothes treating apparatus, comprising:
a drum configured to accommodate therein an object to be dried;
a first flow path of air exhausted from the drum;
a second flow path of air supplied into the drum;
a first fan provided in the first flow path;
a second fan provided in the second flow path;
a heat pump system to heat the air supplied into the drum, wherein the heat pump system includes an evaporator provided at the first flow path, a condenser provided at the second flow path, an expander, and a compressor; and
a controller configured to control a flow rate of air flowing in the second flow path based on a pressure of a refrigerant in the condenser, wherein the controller is configured to increase a rotational speed of the first fan to increase an amount of air supplied to the condenser when the pressure of the refrigerant in the condenser is more than a predetermined maximum allowable pressure.

2. The apparatus of claim 1 , wherein the controller is configured to control the flow rate of the air flowing in the second flow path based on a temperature of the refrigerant in the condenser.

3. The apparatus of claim 1 , wherein the controller calculates the pressure of the refrigerant based on a temperature of the refrigerant in the condenser.

4. The apparatus of claim 1 , wherein the pressure of the refrigerant is measured at a point between the compressor and the condenser.

5. The apparatus of claim 1 , wherein the controller is configured to control an operation of the compressor based on a temperature of the refrigerant in the condenser.

6. The apparatus of claim 1 , wherein the controller is configured to control an operation of the compressor based on the pressure of the refrigerant in the condenser.

7. The apparatus of claim 6 , wherein the pressure of the refrigerant is measured at a point between the compressor and the condenser.

8. The apparatus of claim 6 , wherein the controller calculates the pressure of the refrigerant based on a temperature of the refrigerant in the condenser.

9. The apparatus of claim 1 , further including a heater provided in the second flow path.

10. The apparatus of claim 1 , wherein the controller is configured to calculate the maximum allowable pressure (Pm) based on a peripheral temperature (Ta) of the condenser and to compare the calculated maximum allowable pressure (Pm) with a pressure (Pd) of the refrigerant in the condenser, and wherein the controller determines whether the second fan operates or not based on the comparison.

11. The apparatus of claim 10 , wherein the controller determines that the second fan does not operate when the pressure (Pd) of the refrigerant in the condenser is higher than the maximum allowable pressure (Pm).

12. The apparatus of claim 1 , wherein the first flow path includes an air outlet duct and the second flow path includes an air inlet duct.

13. A method for operating a clothes treating apparatus, wherein the apparatus includes a drum configured to accommodate therein an object to be dried, a first flow path of air exhausted from the drum, a second flow path of air supplied into the drum, a first fan provided in the first flow path, a second fan provided in the second flow path, and a heat pump system to heat the air supplied into the drum, wherein the heat pump system includes an evaporator provided at the first flow path, a condenser provided at the second flow path, an expander, and a compressor, the method comprising:
controlling, by a controller, a flow rate of air flowing in the second flow path based on either a pressure of a refrigerant in the condenser or a temperature of the refrigerant in the condenser, wherein the controller is configured to increase a rotational speed of the first fan to increase an amount of air supplied to the condenser when the pressure of the refrigerant in the condenser is more than a predetermined maximum allowable pressure.

14. The method of claim 13 , further including calculating, by the controller, the pressure of the refrigerant based on the temperature of the refrigerant in the condenser.

15. The method of claim 13 , further including measuring the pressure of the refrigerant at a point between the compressor and the condenser.

16. The method of claim 13 , wherein the first flow path includes an air outlet duct and the second flow path includes an air inlet duct.

17. A method for operating a clothes treating apparatus, wherein the apparatus includes a drum configured to accommodate therein an object to be dried, a first flow path of air exhausted from the drum, a first fan provided in the first flow path, a second flow path of air supplied into the drum, a second fan provided in the second flow path, and a heat pump system to heat the air supplied into the drum, wherein the heat pump system includes an evaporator provided at the first flow path, a condenser provided at the second flow path, an expander, and a compressor, the method comprising:
controlling an operation of the compressor based on either a pressure of a refrigerant in the condenser or a temperature of the refrigerant in the condenser; and
increasing a rotational speed of the first fan to increase an amount of air supplied to the condenser when the pressure of the refrigerant in the condenser is more than a predetermined maximum allowable pressure.

18. The method of claim 17 , further including measuring the pressure of the refrigerant at a point between the compressor and the condenser.

19. The method of claim 17 , further including calculating the pressure of the refrigerant based on the temperature of the refrigerant in the condenser.

20. The apparatus of claim 17 , wherein the first flow path includes an air outlet duct and the second flow path includes an air inlet duct.

Assignees

• Lg Electronics Inc

Inventors

• Lee Hyuksoo
• Ye Sungmin
• Kim Seonghwan

Classifications

• D06F2105/26

  Heat pumps · CPC title

• D06F2105/24

  Flow or velocity · CPC title

• D06F2103/50

  related to heat pumps, e.g. pressure or flow rate · CPC title

• D06F2103/36

  Flow or velocity · CPC title

• D06F58/206 Primary

  Heat pump arrangements · CPC title