Air-conditioning system and operation method thereof

• US 5,103,896 A
• Filed: 04/02/1991
• Issued: 04/14/1992
• Est. Priority Date: 04/02/1990
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Saga, Hideo
• Primary Examiner(s): Ford, John K.
• Application Number:
  US07/679,097
• Time in Patent Office: 378 Days
• Field of Search: 165/16, 165/22, 165/26, 165/27, 165/48.1, 165/2, 236/1 B, 236/1 C
• US Class Current: 165/212
• 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 11/64 using pre-stored data
• CPC Class Codes: F24F 11/65 for selecting an operating mode
• CPC Class Codes: F24F 11/72 for controlling the supply of treated air, e.g. its pressure
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 3/0522 in which warm or cold air from the central station is delivered via individual pipes to mixing chambers in the space to be treated, the cold air/warm air ratio being controlled by a thermostat in the space concerned, i.e. so-called Dual-duct System
• CPC Class Codes: G05D 23/1934 each space being provided with one sensor acting on one or more control means

Abstract

An air conditioning for a room of a high-rise building, for example, is carried out in consideration of the difference in temperatures in a central interior zone and a circumferential perimeter zone of the room changeably to heating and cooling in accordance with an operation mode and a room temperature set point. In the actual air conditioning, a room temperature in the interior zone is first set and an actual room temperature in the perimeter zone is detected. The set room temperature in the interior zone is compared with the detected room temperature in the perimeter zone to thereby select an operation mode (heating or cooling) of air conditioning of the perimeter zone by an operation mode selecting unit. A correction value of the room temperature in the perimeter zone is calculated in accordance with operation modes in the interior and perimeter zones and a room temperature in the perimeter zone is set by adding the correction value to the set room temperature in the interior zone, and supplying the set room tempertures in the interior and perimeter zone to an air conditioning body of the air conditioning system through air supply units into the interior zone and the perimeter zone, respectively.

Claims

1. An air conditioning system for air-conditioning a central interior zone and a circumferential perimeter zone of a room changeably between a heating mode and a cooling mode in accordance with an operation mode and a room temperature set point, the air conditioning system comprising:

a first setting means for setting a room temperature in the interior zone;

a first detecting means for detecting the room temperature in the interior zone;

a first regulating means operatively connected to the first room temperature setting and detecting means for regulating an air conditioning operation in the interior zone;

a first air supply means operatively connected to the first room temperature regulating means for supplying an air into the interior zone in accordance with the regulated air conditioning operation;

a second setting means for setting a room temperature in the perimeter zone;

a second detecting means for detecting the room temperature in the perimeter zone;

a second regulating means operatively connected to the second room temperature setting and detecting means for regulating a air conditioning operation in the perimeter zone, said second room temperature regulating means operatively connected to the first room temperature regulating means;

an operation mode selecting means for selecting an operation mode of the perimeter zone by comparison of the detected room temperature in the perimeter zone with the set room temperature in the interior zone;

a correction value setting means operatively connected to the second room temperature setting means for applying a correction value preliminarily stored therein in accordance with an operation mode of the interior zone and an operation mode of the perimeter zone selected by the operation mode selecting means; and

a second air supply means operatively connected to the second room temperature regulating means for supplying an air into the perimeter zone in accordance with the regulated air conditioning operation.

2. An air conditioning system according to claim 1, wherein the correction value stored in the correction value setting means is for a correction between an effective temperature in the perimeter zone and the room temperature detected by the second room temperature detecting means.

3. An air conditioning system according to claim 1, wherein said first air supply means includes an air blow unit having a changeover damper and an air supply duct connected to an air conditioner body and said second air supply means includes an air blow unit having a changeover damper and an air supply duct connected to the air conditioner body.

4. A method of air-conditioning a central interior zone and a circumferential perimeter zone of a room changeably to heating and cooling in accordance with an operation mode and a room temperature set point, the air conditioning method comprising the steps of:

setting a room temperature in the interior zone;

detecting a room temperature in the perimeter zone;

comparing the set room temperature in the interior zone with the detected room temperature in the perimeter zone;

selecting an operation mode of air conditioning of the perimeter zone;

calculating a correction value of the room temperature in the perimeter zone in accordance with operation modes in the interior and perimeter zones;

setting a room temperature in the perimeter zone by applying the correction value to the set room temperature in the interior zone; and

applying the set room temperatures in the interior and perimeter zone to an air conditioning body of the air conditioning system.

5. A method according to claim 4, wherein the room temperature in the perimeter zone is set by adding the correction value of the room temperature in the perimeter zone to the set room temperature in the interior zone.

6. A method according to claim 4, wherein the correction is for a correction between an effective temperature in the perimeter zone and the detected room temperature in the perimeter zone.