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Control method and device of indoor units, indoor units and multi-connected air conditioner

A multi-connected air conditioner and control method technology, applied in the field of internal unit control and internal unit control devices, can solve problems affecting the comfort of air conditioners, large pressure differences between high and low pressure sides, etc., and achieve rapid response to market demand and eliminate Airflow balances noise and improves user satisfaction

Active Publication Date: 2018-06-22
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

However, as soon as the external function needs to reach zero, the pressure difference between the high and low pressure sides of the whole system is large, and the electronic expansion valve of the internal unit immediately opens to the initial opening, which will cause a burst of "swish" noise due to the air flow, which will affect the use of the air conditioner. comfort

Method used

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  • Control method and device of indoor units, indoor units and multi-connected air conditioner
  • Control method and device of indoor units, indoor units and multi-connected air conditioner
  • Control method and device of indoor units, indoor units and multi-connected air conditioner

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specific Embodiment

[0104] Specific embodiments: a method for adjusting the electronic expansion valve when the air conditioner is shut down includes the following steps, such as Figure 8 Shown:

[0105] Step 802, judging whether the indoor function requirement is 0;

[0106] Step 804, judging whether the opening degree of the electronic expansion valve of the indoor unit is 0, if not 0, go to step 806, if it is 0, go to step 808;

[0107] Step 806, the electronic expansion valve set opening degree PMVSet is assigned a value of 0P, the indoor function required InDoorPower is assigned a value of 0, and the timing variable PMVTime is assigned a value of 0;

[0108] Step 808, judge whether the outdoor unit (compressor) is closed, if closed, proceed to step 810, if not closed, time accumulation, then return to step 806;

[0109] Step 810, judging whether the outdoor function required OutDoorPower is 0, if it is not 0, then go to step 812, if it is 0, then go to step 814;

[0110] Step 812, the ou...

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Abstract

The invention provides a control method and device of indoor units, the indoor units and a multi-connected air conditioner. The control method for the indoor units includes the steps that when the multiple indoor units are stopped, whether the current indoor unit is stopped at last or not is judged; if yes, when a stop signal sent by an outdoor unit is received, an electronic expansion valve of the current indoor unit is controlled to be opened to the standby opening degree. Through the technical scheme of the invention, on the one hand, the pressure difference of the high pressure side and the low pressure side of a whole system can be balanced, and the situation that the multi-connected air conditioner system can start again is guaranteed; and on the other hand, based on original main control panel hardware, airflow balance noise can be rapidly and effectively eliminated only by changing the software program without the need for increasing the cost, and therefore the satisfaction degree of users is improved, and quick response to market demand is made.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular, to a control method for an internal unit, a control device for an internal unit, an internal unit, a multi-connected air conditioner, a computer device, and a computer Read storage media. Background technique [0002] A multi-connected air conditioning system generally consists of an outdoor unit and multiple indoor units. Each internal unit has an electronic expansion valve, so as to realize the independent opening, closing and refrigerant flow adjustment of the internal unit. [0003] When the external unit is shut down, in order to ensure that the pressure difference between the exhaust and return air sides (high and low pressure sides) of the compressor is less than the design pressure difference when the entire multi-connected system is restarted, the current practice is that when the external unit performance needs to be zero , all the internal units are cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/61F24F11/64F24F11/84F24F13/24
CPCF24F13/24F24F2013/247
Inventor 张郊
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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