Multi-connected system and its mode switching control method

A multi-connection system and mode switching technology, applied in the field of multi-connection systems, can solve problems such as large noise, large pressure difference between the front and back of the heating control valve, and large pressure difference between the front and back of the cooling control valve, so as to reduce noise and improve user experience. Effect

Active Publication Date: 2018-09-07
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the heating mode of the indoor unit works in the high-pressure area, while the cooling mode works in the low-pressure area, when the mode is switched, the working pressure range will change from the low-pressure area to the high-pressure area, and the pressure difference between the front and rear of the heating control valve will change. relatively large, resulting in greater noise
When the operating mode of the indoor unit is switched from the heating mode to the cooling mode, the heating control valve corresponding to the indoor unit is closed first, and then the cooling control valve corresponding to the indoor unit is opened, and the working pressure range will change from the high pressure area to the low pressure area. area, the pressure difference between the front and back of the refrigeration control valve will also be relatively large, resulting in greater noise
[0004] Therefore, switching between the above two modes will generate a lot of noise, which will affect the user experience.

Method used

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  • Multi-connected system and its mode switching control method
  • Multi-connected system and its mode switching control method
  • Multi-connected system and its mode switching control method

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Embodiment Construction

[0023] 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.

[0024] The mode switching control method of the multi-connection system and the multi-connection system according to the embodiments of the present invention are described below with reference to the accompanying drawings.

[0025] figure 1 It is a flowchart of a mode switching control method for a multi-connected system according to an embodiment of the present invention.

[0026] In an embodiment of the present invention, the multi-connected system may include an outdoor unit, a plurality of indoor units, and a distribution de...

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Abstract

The invention discloses a multiple on-line system and a mode switching control method thereof. The method includes the following steps that when any of a plurality of indoor units receives a mode switching instruction, the indoor unit sends the mode switching instruction to a flow distribution device; when judging that the indoor unit is switched into a heating mode from a refrigerating mode according to the mode switching instruction, the flow distribution device controls a refrigerating control valve corresponding to the indoor unit to be closed, and before controlling a heating control valve corresponding to the indoor unit to be opened, the flow distribution device adjusts the opening degree of a first throttling element so that the front and back pressure difference of the heating control valve corresponding to the indoor unit can be reduced. According to the method, when the indoor unit is switched into the heating mode from the refrigerating mode, the front and back pressure difference of the heating control valve is reduced by adjusting the opening degree of the first throttling element in the flow distribution device, and therefore noise generated during mode switching is lowered, and user experience is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a mode switching control method of a multi-connection system and a multi-connection system. Background technique [0002] For the multi-connected system, its operating characteristic is to meet the user's heating demand while meeting the cooling demand of the user. Therefore, during its operation, there is mutual switching between the cooling mode and the heating mode of the indoor unit. [0003] Usually, during the mode switching process, when the operating mode of the indoor unit is switched from the cooling mode to the heating mode, the cooling control valve corresponding to the indoor unit is closed first, and then the heating control valve corresponding to the indoor unit is opened. Since the heating mode of the indoor unit works in the high-pressure area, while the cooling mode works in the low-pressure area, when the mode is switched, the working pressure range wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/84F24F13/30
CPCF24F11/30F24F11/62F24F11/64F24F11/65F24F13/30
Inventor 杨国忠范波
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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