Refrigeration system capable of continuous heating and defrosting control method

A technology of refrigeration system and control method, applied in heating mode, air conditioning system, household heating and other directions, can solve problems such as stopping heating, and achieve the effect of avoiding fluctuation, ensuring user comfort, and optimizing user experience.

Active Publication Date: 2019-12-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the defect in the prior art that the indoor unit stops heating when defrosting the multi-connected unit, the present invention proposes a refrigeration system capable of continuous heating and a defrosting control method

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  • Refrigeration system capable of continuous heating and defrosting control method
  • Refrigeration system capable of continuous heating and defrosting control method

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Embodiment Construction

[0018] The invention proposes a refrigeration system, which includes a multi-connected unit, which includes a controller, a plurality of parallel outdoor units and indoor units, each outdoor unit is provided with a pipe connected to the outlet of the four-way valve heating mode Flow regulating device 1, the flow regulating device 1 is a flow control valve. When the system needs to perform defrosting operation, the controller controls an outdoor unit that needs defrosting to switch from heating operation to cooling operation for defrosting operation, so that the high temperature refrigerant The outdoor heat exchanger of this outdoor unit performs defrosting, and the other outdoor units maintain heating operation, and the controller controls the flow adjustment device 1 on the outdoor unit in defrosting operation at the same time, and the flow adjustment device 1 reduces the heating mode with the four-way valve. The refrigerant throughput of the pipes connected to the outlet prev...

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Abstract

A refrigeration system, comprising: a VRV formed by a plurality of outdoor units (A1, A2) connected in parallel, each outdoor unit comprising a four-way valve (3) having a heating mode outlet and a flow regulation device (1); the flow regulation device (1) is provided on a pipeline in communication with the heating mode outlet of the four-way valve (3), and is configured to control, when the refrigeration system needs to perform a defrosting operation, one of the outdoor units (A1, A2) to start a defrosting running mode, and keep the remaining outdoor units in a heating running mode. Also provided is a defrosting control method for a refrigeration system. The refrigeration system and the defrosting control method can avoid or reduce, as far as possible, fluctuation of the indoor environment temperature when defrosting the outdoor units.

Description

technical field [0001] The invention relates to the field of air conditioning systems, in particular to a refrigeration system capable of continuous heating and a defrosting control method. Background technique [0002] Air source heat pumps are increasingly widely used in small and medium-sized buildings and some public buildings, and have become one of the most active forms of central air-conditioning systems; when the unit is in heating operation, the outdoor heat exchanger acts as an evaporator, and its temperature is relatively low , when the temperature is below zero and the outdoor environment has a certain humidity, frosting may occur on the outdoor heat exchanger; frosting on the outdoor heat exchanger will cause the heat transfer performance of the heat exchanger to deteriorate and the air circulation to be blocked , the heating capacity of the unit becomes poor, and in serious cases, there will be no heating effect or even cold air; this will lead to poor user exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F3/06F24F11/89F24F11/42
CPCF24F3/06F24F11/42F24F11/89
Inventor 张仕强武连发李立民冯涛朱世强
Owner GREE ELECTRIC APPLIANCES INC
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