AIR CONDITIONING SYSTEM

• US 20140069131A1
• Filed: 09/13/2012
• Published: 03/13/2014
• Est. Priority Date: 09/13/2012
• Status: Abandoned Application

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: MASUI, Hirotaka
• Application Number:
  US13/614,305
• Publication Number:
  US 20140069131A1
• Time in Patent Office: Days
• US Class Current: 62/180
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/64 using pre-stored data
• CPC Class Codes: F24F 11/65 for selecting an operating mode
• CPC Class Codes: F24F 2011/0006 using low temperature external supply air to assist cooling
• CPC Class Codes: F24F 2120/00 Control inputs relating to users or occupants
• CPC Class Codes: F24F 2120/10 Occupancy
• CPC Class Codes: F24F 2120/12 Position of occupants
• CPC Class Codes: F24F 2140/00 Control inputs relating to system states

Abstract

An air-conditioning system including an air-conditioning apparatus having a compressor circulating a refrigerant, and an outdoor unit and an indoor unit performing air conditioning of an air-conditioned room; outside air introduction means supplying air outside the air-conditioned room; outside air temperature detection means detecting a temperature outside the air-conditioned room; human body position detection means detecting a user in the air-conditioned room; target-room-temperature determination means determining a user number and/or a variation of the user number in the air-conditioned room on the basis of the detection of the human body position detection means and determining a target room temperature; and cooling-operation-method determination means determining whether to operate the air-conditioning apparatus or to operate the outside air introduction means on the basis of the target room temperature and the temperature outside the air-conditioned room.

Claims

1. An air conditioning system, comprising:

an air-conditioning apparatus performing air conditioning of an air-conditioned space by using a refrigerant discharged by a compressor;

a fan supplying air outside the air-conditioned space into the air-conditioned space;

an outside air temperature sensor detecting a temperature outside the air-conditioned space;

a heat source sensor detecting a heat source object in the air-conditioned space;

target-room-temperature determination means determining a target room temperature that is a temperature target of the air-conditioned space by determining a user number and a variation of the user number in the air-conditioned space based on a detection of the heat source sensor; and

cooling-operation-method determination means determining whether to operate the air-conditioning apparatus or to drive the fan based on the target room temperature and the temperature outside the air-conditioned space.

2. The air conditioning system of claim 1, wherein the target-room-temperature determination means determines the target room temperature from among three or more target room temperatures that have been preset based on the user number and the variation of the user number.

3. The air-conditioning system of claim 1, further comprising power consumption determination means determining a power consumption of the air-conditioning apparatus and a power consumption of the fan, wherein

the cooling-operation-method determination means determines whether to operate the air-conditioning apparatus or to operate the fan based on comparison of the power consumption of the air-conditioning apparatus and the power consumption of the fan.

4. The air conditioning system of claim 3, further comprising

an indoor air temperature sensor detecting a temperature inside the air-conditioned space, wherein

the power consumption determination means determines, among the air-conditioning apparatus and the fan, the power consumption of the apparatus and/or the fan in operation by means of measurement, and

the power consumption determination means estimates and determines, among the air-conditioning apparatus and the fan, the power consumption of the apparatus and/or the fan not in operation based on the target room temperature, the temperature outside the air-conditioned space, and the temperature inside the air-conditioned space.