Defrosting control method of multifunctional multi-split system with double four-way valves

A multi-online system, double four-way valve technology, applied in the direction of reversible cycle compressors, refrigerators, compressors, etc., can solve problems such as user misunderstanding, frozen explosion pipeline, waterway freezing, etc., and achieve defrosting. Clean, fast, energy saving, good system reliability

Active Publication Date: 2021-04-02
GUANDONG GIWEE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] If the user of the indoor unit of the air conditioner is turned off and not in use, but turns to cooling during the defrosting process, it is easy to cause complaints after the user does not understand
In addition, the hydraulic module is converted to cooling water. If the hydraulic module itself is not heating hot water, the water temperature in the hydraulic module will be very low. After switching to cooling water, it is easy to cause the waterway to freeze and cause the risk of freezing and bursting the pipeline.

Method used

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  • Defrosting control method of multifunctional multi-split system with double four-way valves
  • Defrosting control method of multifunctional multi-split system with double four-way valves

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Embodiment Construction

[0021] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] See attached figure 1 As shown, in this embodiment, a multi-connected unit includes an outdoor unit 100, at least one set of hydraulic modules 200, and at least one set of indoor modules 300. The hydraulic modules 200 arranged in parallel and three sets of indoor modules 300 arranged in parallel.

[0023] In this embodiment, the outdoor unit 100 includes a compressor 1, a first four-way valve 2, a second four-way valve 3, an outdoor heat exchanger 4, an oil separator 5 ...

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Abstract

The invention discloses a defrosting control method of a multifunctional multi-split system with double four-way valves. The multi-split system comprises an outdoor unit, at least one group of hydraulic modules and at least one group of indoor modules, wherein when the multi-split system is switched from a normal operation mode to a defrosting mode, the first four-way valve and the second four-wayvalve are powered off, and based on the previous operation modes of each group of indoor modules and each group of hydraulic modules, the operation modes of all the indoor modules and all the hydraulic modules, starting and stopping of fans of an indoor heat exchanger and a hydraulic heat exchanger, the opening degree of a first electromagnetic valve of the indoor heat exchanger, the opening degree of a first electromagnetic valve of the hydraulic heat exchanger and opening and closing of a first electromagnetic valve and a second electromagnetic valve are correspondingly adjusted.

Description

technical field [0001] The invention relates to the technical field of multi-connected air-conditioning systems, in particular to a defrosting control method of a multi-functional multi-connected system with double four-way valves. Background technique [0002] A common multi-split system consists of an outdoor unit and an air conditioner indoor unit. When the air conditioner indoor unit is heating, the outdoor unit heat exchanger acts as an evaporator for cooling. When the ambient temperature is low, usually the heat exchanger of the outdoor unit will Frost, after the outdoor unit is frosted, the heat exchange capacity of the heat exchanger of the outdoor unit will decrease, and the temperature of the refrigerant in the heat exchanger of the outdoor unit will continue to accelerate Dispose of the frost on the heat exchanger. [0003] Usually, when the outdoor unit needs to defrost, the four-way valve will be turned off and reversed. The heat exchanger of the outdoor unit i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/65F25B47/02F25B41/20F25B41/31F25B49/02
CPCF24F11/42F24F11/65F25B47/025F25B49/02F25B13/00F25B2313/003F25B2313/007F25B2313/0231F25B2313/02742F25B2600/2513F25B2600/2519F25B41/24Y02B30/70F25B41/20F25B41/345F25B43/02F25B2600/2515
Inventor 周敏刘红斌
Owner GUANDONG GIWEE TECH CO LTD
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