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Control device, method, and program, and multi-type air conditioning system comprising same

A control device, air technology, applied in air conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc. Effect

Active Publication Date: 2014-09-24
MITSUBISHI HEAVY IND THERMAL SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the indoor unit in the heat-off state of the heating operation, although the indoor temperature falls outside the set temperature range and the heating is turned on to restart the heating, it is conceivable that the temperature sensor on the indoor unit side is blocked due to stuffiness. When the hot air in the indoor unit prevents proper heat conduction

Method used

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  • Control device, method, and program, and multi-type air conditioning system comprising same
  • Control device, method, and program, and multi-type air conditioning system comprising same

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Embodiment Construction

[0026] Hereinafter, an embodiment of the control device, method, and program of the present invention, and a multi-type air-conditioning system including the control device, method, and program will be described with reference to the drawings.

[0027] figure 1 A schematic configuration diagram including a refrigerant cycle of the multi-type air-conditioning system 1 including the control device according to the present embodiment is shown.

[0028] The multi-type air-conditioning system 1 includes one outdoor unit 2, gas-side piping 4 and liquid-side piping 5 led from the outdoor unit 2, and multiple air-conditioning pipes connected in parallel between the gas-side piping 4 and liquid-side piping 5 through branchers 6. 7 indoor units. exist figure 1 In the figure, the case where two indoor units 7A and 7B are shown as the indoor unit 7 is taken as an example. Hereinafter, unless otherwise specified, the indoor unit will be described as the indoor unit 7 .

[0029] The out...

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Abstract

A control device (41) that prevents excessive heating, prevents low gas, and intermittently operates fans for indoor units in a thermo-off state. The control device (41) controls the operation of a multi-type air conditioning system (1) in which a plurality of indoor units (7) are connected to an outdoor unit (2), and the flowrate for a refrigerant caused to flow through refrigerant piping is adjusted by the degree of opening of an indoor electric expansion valve (72). When the thermostat is off during warming and when the control unit (41) is performing intermittent operation during which an on-off operation is repeated whereby the fans for the indoor units (7) are operated for a prescribed time and then stopped for a prescribed time, the control unit (41) controls the degree of opening of the indoor electric expansion valve (72) during the off period for the fans for the indoor units (7) so as to be larger than the degree of opening during the on period for the fans for the indoor units (7) and to be no more than the degree of opening for noise reduction.

Description

technical field [0001] The present invention relates to a control device, method, and program, and a multi-type air-conditioning system including the control device, method, and program. Background technique [0002] In a multi-type air-conditioning system used for air conditioning in buildings, etc., multiple indoor units are connected to one outdoor unit. Such a multi-type air conditioning system controls the start and stop of the operation according to the indoor unit, and controls the heat on and off according to whether the indoor temperature reaches the set temperature range. [0003] During heating operation, when the thermal shutdown is performed because the indoor temperature has reached the set temperature range, the indoor unit does not need the heating capacity, but when other indoor units connected to the common outdoor unit are in operation , the compressor of the outdoor unit continues to operate, so the refrigerant continues to flow as a system. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02F24F11/04
CPCF25B2313/0233F25B2313/006F25B40/02F25B2313/02741F25B2400/13F25B13/00Y02B30/746F24F11/008F24F3/065F24F11/83F24F11/84
Inventor 加藤隆博三苫恵介盐谷笃
Owner MITSUBISHI HEAVY IND THERMAL SYST
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