Multi-online system and control method for heating and throttling element of multi-online system
A multi-connected system, heating and throttling technology, applied in the field of multi-connected systems, can solve the problems of compressor discharge temperature and exhaust superheat, high system discharge temperature, poor cooling effect, etc., to achieve low emission Air temperature, high energy efficiency, and good cooling effect
Active Publication Date: 2016-09-07
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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[0003] However, when the system is in pure cooling and main cooling mode, if the outdoor temperature and indoor temperature are relatively high, the evaporation temperature of the indoor unit is high, the cooling effect is poor, and the return air temper
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[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0021] The method for controlling the heating throttling element in the multi-connected system and the multi-connected system according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0022] In an embodiment of the present invention, the multi-split system may include an outdoor unit, a plurality of indoor units, and a flow distribution device. The flow distribution device includes a first heat exchanger, a second heat exchanger, and a heating throttling element. T...
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The invention discloses a multi-online system and a control method for a heating and throttling element of the multi-online system. The method comprises the steps that when the multi-online system runs in a pure refrigerating or main refrigerating mode, the first temperature at the position of an outlet of a second heat exchange flow path of a first heat exchanger is obtained, the first saturation temperature corresponding to pressure at the position of the outlet of the second heat exchange flow path of the first heat exchanger is obtained, and the superheat degree is calculated according to the first temperature and the first saturation temperature; the second temperature at the position of an outlet of a first heat exchange flow path of a second heat exchanger is obtained, the second saturation temperature at the position of the outlet of the first heat exchange flow path of the second heat exchanger is obtained, and the supercooling degree is calculated according to the second temperature and the second saturation temperature; and the aperture of the heating and throttling element is adjusted according to the superheat degree and the supercooling degree. According to the method, the heating and throttling element can be adjusted according to the superheat degree and the supercooling degree, the aperture of the heating and throttling element is made to be optimal, and therefore the system can obtain the low exhaust temperature and good refrigerating effect and is high in energy efficiency.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method for controlling a heating throttling element in a multi-connection system and a multi-connection system. Background technique [0002] The multi-connected system has four modes: pure cooling, pure heating, main cooling and main heating. Among them, the main cooling mode and the main heating mode can use the condensation heat and evaporation heat of the system at the same time, which greatly improves the energy efficiency of the system. [0003] However, when the system is in pure cooling and main cooling mode, if the outdoor temperature and indoor temperature are relatively high, the evaporation temperature of the indoor unit is high, the cooling effect is poor, and the return air temperature of the cooling indoor unit is relatively high. As a result, the exhaust temperature and superheat of the compressor in the outdoor unit will increase accordingly, which in...
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Login to view more IPC IPC(8): F24F1/00F24F11/00F25B13/00F25B41/00F25B41/30F25B41/40
CPCF24F1/0003F24F11/30F24F11/83F24F2110/10F25B13/00F25B41/00F24F11/84
Inventor 李元阳
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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