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Multi-connected type air conditioner system and control method thereof

A multi-connected air conditioner and control method technology, applied in the field of air conditioners, can solve the problems of energy waste, reduce the heating capacity of air conditioners, frosting of outdoor heat exchangers, etc., and achieve the goals of ensuring the comfort of use, enhancing the use effect, and increasing the cooling capacity Effect

Inactive Publication Date: 2015-02-04
GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when the multi-connected air-conditioning system is running in winter, due to the relatively low outdoor temperature, it is easy to cause frost on the outdoor heat exchanger. Operating in the frosted state will greatly reduce the heating capacity of the air-conditioning system. Perform defrosting operation
The traditional defrosting method is that when the outdoor heat exchanger defrosts, the indoor unit runs in a state of preventing cold wind, and the indoor unit fan stops. After defrosting, the air conditioning system needs to run for a certain period of time to make the air blown by the indoor unit It is hot air, which makes the user's subjective experience poor, and often suffers complaints
Therefore, when the traditional air-conditioning system defrosts, not only will the heating capacity of the air-conditioning be greatly reduced, resulting in energy waste, but also the user's use effect will be greatly reduced.

Method used

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  • Multi-connected type air conditioner system and control method thereof
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  • Multi-connected type air conditioner system and control method thereof

Examples

Experimental program
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Embodiment 1

[0046] see figure 1 , is a schematic structural diagram of the multi-connected air conditioning system provided by Embodiment 1 of the present invention. This multi-connected air-conditioning system includes a compressor 1, a four-way valve 2, an outdoor heat exchanger group 3 and an indoor unit (not shown in the figure) through a refrigerant circulation circuit connected by refrigerant pipes and a system for controlling the operation of the air-conditioning system. Controller (not shown in the figure), wherein, the S pipe port of the four-way valve 2 is connected to the suction port 11 of the compressor 1 through the low-pressure air pipe 93, and the E pipe port is connected to the gas side pipeline 92 connected to the indoor unit, The D nozzle is connected to the exhaust port 12 of the compressor 1; (I personally think that the content of the claim has been clearly and completely described in the case of this principle structure, and I don’t know how to expand it in the embo...

Embodiment 2

[0056] See Image 6 , the difference between this embodiment and Embodiment 1 is that the number of groups of outdoor module heat exchangers 31 connected in parallel in the outdoor heat exchanger group is different, and the outdoor module heat exchangers 31 in this embodiment are three groups, and the outdoor In the module heat exchanger 31, the gas side branch 912, the liquid side branch 911, the branch branch 913 and the corresponding first control valve 51, the first throttling member 61, the second control valve 52 and the third control valve are added on each branch. Valve 53.

Embodiment 3

[0058] See Figure 7 , the difference between this embodiment and Embodiment 1 and Example 2 is that the number of groups of outdoor module heat exchangers 31 connected in parallel in the outdoor heat exchanger group is different, and the number of outdoor module heat exchangers 31 in this embodiment is four groups, and at the same time Add the first control valve 51, the first throttling component 61, the second control valve 52 and The third control valve 53 .

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Abstract

The invention provides a multi-connected type air conditioner system and a defrosting control method of the system. The air conditioner system comprises a refrigerant circulation loop and a controller. The refrigerant circulation loop is formed by connecting at least one compressor, a four-way valve, an outdoor heat exchanger set and an indoor unit through a refrigerant pipe; the controller controls the system to run; the outdoor heat exchanger set comprises at least two outdoor module heat exchangers which are connected in parallel and auxiliary heat exchangers connected with the outdoor module heat exchangers. According to the multi-connected type air conditioner system, the outdoor heat exchanger set comprises two or more module heat exchangers, and the auxiliary heat exchangers are added; when a certain outdoor module heat exchanger meets the defrosting condition and needs to be defrosted, corresponding control valves and throttling components are controlled to be correspondingly linked through certain control logics, and therefore the defrosting aim of the outdoor module heat exchangers is achieved. The air conditioner system carries out defrosting and heating at the same time; in the modular defrosting period of the outdoor module heat exchangers, it can be ensured that hot air can be blown out of the indoor side, and the use effect of a user is ensured.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and more specifically relates to a multi-connected air conditioning system and a control method thereof. Background technique [0002] At present, when the multi-connected air-conditioning system is running for heating in winter, due to the relatively low outdoor ambient temperature, it is easy to cause frost on the outdoor heat exchanger. Operating in the frosted state will greatly reduce the heating capacity of the air-conditioning system. Perform defrosting operation. The traditional defrosting method is that when the outdoor heat exchanger defrosts, the indoor unit runs in the state of preventing cold wind, and the fan of the indoor unit stops. After defrosting, the air conditioning system needs to run for a certain period of time to make the air blown by the indoor unit It is hot air, which makes the user's subjective experience poor, and often suffers complaints. Therefore, when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B47/02F25B49/02
CPCF25B13/00F25B47/025F25B49/02
Inventor 王新利熊美兵许永锋冯明坤叶斌赵增毅
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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