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Multi-line system and its control method for medium pressure throttling element

A technology of multi-connection system and throttling element, applied in the field of multi-connection system, can solve the problems of poor cooling effect, increased cooling effect, and high noise of the internal refrigeration unit, and achieve the effect of improving noise and increasing cooling effect.

Active Publication Date: 2019-07-26
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

[0005] For this reason, an object of the present invention is to propose a control method for the medium pressure throttling element in a multi-line system, by adjusting the initial target medium pressure difference, to effectively solve the problem caused by the target medium pressure difference in the main cooling mode. The cooling effect of the refrigeration internal unit caused by reason is poor and the noise is large, so as to increase the cooling effect of the system and improve the noise problem

Method used

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  • Multi-line system and its control method for medium pressure throttling element
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  • Multi-line system and its control method for medium pressure throttling element

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Embodiment Construction

[0022] 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.

[0023] The control method of the medium-voltage throttling element in the multi-line system and the multi-line system according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] figure 1 is a schematic structural diagram of a multi-line system according to an embodiment of the present invention. like figure 1 As shown, the multi-split system may include an outdoor unit 10 , a distribution device 20 , multiple indoor units 30 and a control module 40 . Where...

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Abstract

The invention discloses a multi-split air-conditioning system and a control method of a medium-pressure throttling element thereof. The method comprises the steps of: controlling the medium-pressure throttling element according to a preset initial target medium-pressure difference value when the multi-split air-conditioning system is operated in a main refrigeration mode; judging if the multi-split air-conditioning system satisfies preset conditions in the process of controlling the medium-pressure throttling element according to the preset initial target medium-pressure difference value; and reducing the initial target medium-pressure difference value and controlling the medium-pressure throttling element according to the adjusted target medium-pressure difference value if the multi-split air-conditioning system satisfies the preset conditions. The method adjusts the initial target medium-pressure difference value to effectively solve the problems of weak refrigeration effect and high noise of a refrigeration indoor unit caused by unreasonable target medium-pressure value in the main refrigeration mode so as to improve the system refrigeration effect and to improve the noise problem.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method for a medium-voltage 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 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. Usually, a multi-connected system consists of three parts: an outdoor unit, an indoor unit, and a distribution device. The outdoor unit distributes the gas-liquid refrigerant to the indoor units with different cooling and heating requirements through the distribution device. [0003] In a multi-connected system, in order to achieve better results for both the cooling internal unit and the heating internal unit, it is necessary to d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/83
CPCF24F11/30F24F11/62F24F11/64F24F11/70
Inventor 谭志军李元阳陈俊伟
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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