Continuous heating control system and method, and air-conditioning device

Patent metadata

Field	Value
Publication number	US-12038211-B2
Application number	US-202017641713-A
Country	US
Kind code	B2
Filing date	Sep 3, 2020
Priority date	Oct 23, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A continuous heating control system and method, and an air-conditioning device. The system includes a defrosting solenoid valve ( 1 ) arranged on a bypass pipeline, wherein one end of the bypass pipeline is connected to an oil separator ( 2 ), and the other end of the bypass pipeline is connected to an outdoor heat exchanger ( 3 ); and a heating structure which is arranged at the bottom of a gas separator ( 4 ) and used for heating the gas separator ( 4 ).

First claim

What is claimed is:

1. A continuous heating control system, comprising:
a defrosting solenoid valve arranged on a bypass pipeline, wherein one end of the bypass pipeline is connected to an oil separator, and another end of the bypass pipeline is connected to an outdoor heat exchanger;
a heating structure arranged at a bottom of a gas separator and configured to heat the gas separator, wherein the heating structure comprises: a heating tank arranged at the bottom of the gas separator, wherein a first pipeline connected to the heating tank is provided at the bottom of the gas separator, and a first electrical heating member arranged outside the heating tank; and
a first branch, wherein a first end of the first branch is arranged in a pipeline between a rear end of a supercooler electronic expansion valve and a supercooler, a second end of the first branch is connected to an enthalpy increasing tube, the first branch is provided with a second electrical heating member and a first enthalpy increasing valve, and a third end of the first branch is arranged between the second electrical heating member and the first enthalpy increasing valve and is connected to the heating tank.

2. The continuous heating control system according to claim 1 , wherein the first pipeline is provided with a liquid inlet valve.

3. The continuous heating control system according to claim 1 , further comprising:
a second pipeline connected between an outlet pipe of the gas separator and the heating tank, wherein the second pipeline is provided with a pressure balancing valve.

4. The continuous heating control system according to claim 1 , further comprising:
a third pipeline, wherein one end of the third pipeline is connected to the heating tank, and another end of the third pipeline is connected to two branches, one branch of the two branches being connected to a suction pipe of a compressor, and another branch of the two branches being connected to an enthalpy increasing tube.

5. The continuous heating control system according to claim 4 , wherein the one branch connected to the suction pipe of the compressor is provided with an exhaust valve, and the other branch connected to the enthalpy increasing tube is provided with a second enthalpy increasing valve.

6. The continuous heating control system according to claim 1 , wherein one end of the defrosting solenoid valve is connected to a front portion or a rear portion of a capillary tube of the outdoor heat exchanger.

7. The continuous heating control system according to claim 1 , wherein the heating structure comprises:
a third electrical heating member arranged at the bottom of the gas separator, or at an inlet pipe of the gas separator, or at an outlet pipe of the gas separator.

8. An air-conditioning device, comprising: the continuous heating control system according to claim 1 .

9. A continuous heating control method, applied to the continuous heating control system according to claim 1 , comprising:
controlling the defrosting solenoid valve to be turned on, controlling a supercooling solenoid valve to be turned on, controlling a liquid inlet valve to be turned on, controlling an exhaust valve to be turned on, controlling a heating electronic expansion valve to be turned off, and controlling a supercooler electronic expansion valve to be turned on to a maximum number of steps after receiving a defrosting start instruction; and
controlling a first electrical heating member to start operation;
wherein the supercooling solenoid valve is arranged between a gas separator and a supercooler, and the heating electronic expansion valve is arranged between the supercooler and the outdoor heat exchanger.

10. The continuous heating control method according to claim 9 , further comprising:
controlling the defrosting solenoid valve to be turned off, controlling the liquid inlet valve to be turned off, controlling the exhaust valve to be turned off, and controlling the supercooling solenoid valve, the heating electronic expansion valve and the supercooler electronic expansion valve to all resume normal control after receiving a defrosting end instruction; and
controlling the first electrical heating member to stop operation.

11. A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method according to claim 9 .

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Liu Hua
• Zhang Shiqiang
• Li Limin
• Zhou Chao
• Jin Mengmeng
• Zhu Shiqiang

Classifications

• F25B2400/23

  Separators · CPC title

• F25B2400/0411

  for expansion valves or capillary tubes · CPC title

• F25B2347/02

  Details of defrosting cycles · CPC title

• F25B2313/008

  Refrigerant heaters · CPC title

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title