Refrigerator adopting linear compressor and control method thereof

Patent metadata

Field	Value
Publication number	US-10969150-B2
Application number	US-201615770203-A
Country	US
Kind code	B2
Filing date	Jun 17, 2016
Priority date	Nov 5, 2015
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

Disclosed is a refrigerator adopting a linear compressor and a control method thereof. The method includes: monitoring the temperature of an evaporator of the refrigerator; if the current temperature of the evaporator of the refrigerator is greater than or equal to a first preset temperature threshold, then invoking a noise reduction mode to actively reduce the heat exchange amount between the evaporator and a compartment of the refrigerator until the current temperature of the evaporator of the refrigerator is smaller than or equal to a second preset temperature threshold, and invoking a cooling mode to resume the normal heat exchange between the evaporator and the compartment of the refrigerator, wherein the first preset temperature threshold is higher than the second preset temperature threshold.

First claim

What is claimed is:

1. A control method of a refrigerator adopting a linear compressor, comprising:
monitoring temperature of an evaporator of the refrigerator;
if a current temperature of the evaporator of the refrigerator is greater than or equal to a first preset temperature threshold, then invoking a noise reduction mode to actively reduce a heat exchange amount between the evaporator and a compartment of the refrigerator until the current temperature of the evaporator of the refrigerator is less than or equal to a second preset temperature threshold, and invoking a cooling mode to resume heat exchange between the evaporator and the compartment of the refrigerator back to the heat exchange amount before being reduced, wherein the first preset temperature threshold is higher than the second preset temperature threshold; and
in the noise reduction mode, controlling the linear compressor to turn on or turn off according to the temperature in the compartment of the refrigerator, setting a plurality of consecutive temperature intervals corresponding to an ambient temperature outside the compartment, setting operation parameters of the linear compressor corresponding to each interval, and operating the linear compressor according to corresponding operation parameters.

2. The control method of a refrigerator adopting a linear compressor according to claim 1 , wherein the noise reduction mode comprises:
closing a blower of the refrigerator and/or an air door of the compartment.

3. The control method of a refrigerator adopting a linear compressor according to claim 1 , wherein the evaporator of the refrigerator comprises a refrigeration evaporator and a freezing evaporator, the first preset temperature threshold comprises a first preset refrigeration temperature threshold and a first preset freezing temperature threshold, the second preset temperature threshold comprises a second preset refrigeration temperature threshold and a second preset freezing temperature threshold, and the step of monitoring temperature of an evaporator of the refrigerator comprises:
monitoring temperatures of the refrigeration evaporator and of the freezing evaporator of the refrigerator;
if a current temperature of the refrigeration evaporator of the refrigerator is greater than or equal to the first preset refrigeration temperature threshold, then invoking a refrigeration noise reduction mode to actively reduce a first heat exchange amount between the refrigeration evaporator and a refrigeration compartment until the current temperature of the refrigeration evaporator is less than or equal to the second preset refrigeration temperature threshold, and invoking a refrigeration cooling mode to resume heat exchange between the refrigeration evaporator and the refrigeration compartment back to the first heat exchange amount before being reduced, wherein the first preset refrigeration temperature threshold is higher than the second preset refrigeration temperature threshold; and
if a current temperature of the freezing evaporator of the refrigerator is greater than or equal to the first preset freezing temperature threshold, then invoking a freezing noise reduction mode to actively reduce a second heat exchange amount between the freezing evaporator and a freezing compartment until the current temperature of the freezing evaporator is less than or equal to the second preset freezing temperature threshold, and invoking a freezing cooling mode to resume heat exchange between the freezing evaporator and the freezing compartment back to the second heat exchange amount before being reduced, wherein the first preset freezing temperature threshold is higher than the second preset freezing temperature threshold.

4. The control method of a refrigerator adopting a linear compressor according to claim 3 , wherein the refrigeration noise reduction mode comprises:
closing a blower of the refrigeration compartment and/or an air door of the refrigeration compartment; and
the freezing noise reduction mode comprises:
closing a blower of the freezing compartment and/or an air door of the freezing compartment.

5. The control method of a refrigerator adopting a linear compressor according to claim 4 , further comprising:
in the refrigeration noise reduction mode, controlling the linear compressor to turn on or turn off according to the temperature in the refrigeration compartment, setting a plurality of consecutive temperature intervals corresponding to an ambient temperature outside the refrigeration compartment, setting operation parameters of the linear compressor corresponding to each interval, and operating the linear compressor according to corresponding operation parameters; and
in the freezing noise reduction mode, controlling the linear compressor to turn on or turn off according to the temperature in the freezing compartment, setting a plurality of consecutive temperature intervals corresponding to an ambient temperature outside the freezing compartment, setting operation parameters of the linear compressor corresponding to each interval, and operating the linear compressor according to corresponding operation parameters.

6. A refrigerator adopting a linear compressor, comprising:
an evaporator temperature sensor configured for monitoring temperature of an evaporator of the refrigerator;
a computer board configured for: controlling an operation mode of the refrigerator; if a current temperature of the evaporator of the refrigerator is greater than or equal to a first preset temperature threshold, then invoking a noise reduction mode to actively reduce a heat exchange amount between the evaporator and a compartment of the refrigerator until the current temperature of the evaporator of the refrigerator is less than or equal to a second preset temperature threshold, and invoking a cooling mode to resume heat exchange between the evaporator and the compartment of the refrigerator back to the heat exchange amount before being reduced, wherein the first preset temperature threshold is higher than the second preset temperature threshold;
a temperature sensor inside the refrigerator compartment configured for collecting the temperature in the refrigerator compartment;
a temperature sensor outside the refrigerator compartment configured for collecting an ambient temperature; and
in the noise reduction mode, controlling the linear compressor to turn on or turn off according to the temperature in the compartment of the refrigerator, setting a plurality of consecutive temperature intervals corresponding to the ambient temperature, setting operation parameters of the linear compressor corresponding to each interval, and operating the linear compressor according to corresponding operation parameters.

7. The refrigerator adopting a linear compressor according to claim 6 , wherein the noise reduction mode comprises:
closing a blower of the refrigerator and/or an air door of the compartment.

8. The refrigerator adopting a linear compressor according to claim 6 , wherein the evaporator of the refrigerator comprises a refrigeration evaporator and a freezing evaporator, the first preset temperature threshold comprises a first preset refrigeration temperature threshold and a first preset freezing temperature threshold, the second preset temperature threshold comprises a second preset refrigeration temperature threshold and a second preset freezing temperature threshold:
the evaporator temperature sensor comprises a refrigeration evaporator temperature sensor configured for monitoring temperature of the refrigeration evaporator of the refrigerator; and
a freezing evaporator temperature sensor configured for monitoring temperature of the freezing evaporator of the refrigerator;
if a current temperature of the

Assignees

• Qingdao Haier Joint Stock Co Ltd

Inventors

• Ji Lisheng
• Liu Jianru
• Zhu Xiaobing
• Qi Feifei
• Zhang Shufeng
• Zhao Caiyun

Classifications

• F25D2700/14

  Sensors measuring the temperature outside the refrigerator or freezer · CPC title

• F25D2700/12

  Sensors measuring the inside temperature · CPC title

• F25D29/00 Primary

  Arrangement or mounting of control or safety devices · CPC title

• F25B49/022 Primary

  Compressor control arrangements · CPC title

• F25B2400/073

  Linear compressors · CPC title