Novel defrosting mode four-pipe multifunctional all-in-one machine

By adding solenoid valves to the four-controlled multi-functional all-in-one machine and using a heat recovery as an evaporator, the problems of poor defrost effect and freezing of shell and tube heat exchangers during the winter heating operation are solved, and higher system stability, safety and energy efficiency are achieved.

CN222688475UActive Publication Date: 2025-03-28SHANDONG WALKER AIR CONDITIONING GRP CO LTD
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Patent Information

Application Number
CN202421275112.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-05
Publication Date
2025-03-28
Estimated Expiration
2034-06-05

AI Technical Summary

Technical Problem

When the traditional defrost is heated in winter, it is easy to cause the evaporator water temperature to decrease, the defrost effect is poor, and may cause the shell and tube heat exchanger to freeze, affecting the normal operation of the air conditioning system.

Method used

A new four-pipe multi-functional machine for defrost is designed. By adding a solenoid valve, a heat recovery device is used as an evaporator during the defrost process, so as to protect the shell and tube heat exchanger while ensuring the defrost effect.

Benefits of technology

It effectively protects the shell and tube heat exchanger from being frozen, improves the stability and safety of the system, and at the same time, it improves energy utilization efficiency through heat recovery and reduces building energy consumption.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a novel defrosting mode four-pipe multifunctional all-in-one machine, which relates to the technical field of central air conditioners and comprises a compressor, a four-way valve, a fin heat exchanger and a first one-way valve which are sequentially connected, the four-way valve comprises a first connector, a second connector, a third connector and a fourth connector, the first connector is connected with the compressor, and the second connector is connected with the fin heat exchanger. The first one-way valve is connected with a first channel, a second one-way valve is arranged on the first channel, the first channel is connected with a liquid storage device, the liquid storage device is connected with a second channel, a ball valve is arranged on the second channel, and the second channel is connected with a third channel, a fourth channel and a fifth channel. A first electromagnetic valve and a third one-way valve are arranged on the third channel, a second electromagnetic valve is arranged on the fourth channel, the fourth channel is connected with an evaporator, and the evaporator is connected with a gas-liquid separator. The defrosting device has the advantages of efficient defrosting, energy conservation, environmental protection and flexible adaptation.
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