High-temperature air conditioning device

Patent metadata

Field	Value
Publication number	US-10955172-B2
Application number	US-201816195935-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	Jun 1, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

Disclosed is a high-temperature air conditioning device. By changing an arrangement mode of throttle valves, a pressure of refrigerant inside a low-pressure pipeline is made to be lower than a pressure of refrigerant inside a medium-pressure pipeline, thus ensuring that the refrigerant, used for cooling components, inside the low-pressure pipeline has a low pressure, thereby solving a problem in the prior art that a frequency converter, a motor and lubricating oil are not cooled sufficiently or cannot be cooled due to excessively high evaporation pressure.

First claim

What is claimed is:

1. A high-temperature air conditioning device, comprising a compressor, a condenser, a throttling and cooling pipeline assembly, and an evaporator, which are connected in sequence to form a cycle; wherein, the throttling and cooling pipeline assembly includes throttle valves, a medium-pressure pipeline, a low-pressure pipeline, and a booster pipeline; the throttle valves are configured to enable a pressure of refrigerant in the low-pressure pipeline to be lower than a pressure of refrigerant in the medium-pressure pipeline; the medium-pressure pipeline and the low-pressure pipeline are connected in parallel; components to be cooled are disposed in the low-pressure pipeline; an outlet of the low-pressure pipeline is connected to an inlet of the booster pipeline, and an outlet of the booster pipeline is connected to the evaporator; a booster pump is arranged in the booster pipeline;
the medium-pressure pipeline and the low-pressure pipeline are connected in parallel between the condenser and the evaporator;
the throttle valves include a first throttle valve disposed in the medium-pressure pipeline, and a plurality of second throttle valves connected in series in the low-pressure pipeline; a pressure regulation capacity of the plurality of second throttle valves connected in series is greater than a pressure regulation capacity of the first throttle valve; the components to be cooled are connected in series downstream of the plurality of the second throttle valves.

2. The high-temperature air conditioning device according to claim 1 , wherein, the pressure adjustment capacity of each of the second throttle valves is identical.

3. The high-temperature air conditioning device according to claim 1 , wherein, number of the second throttle valves is two.

4. A high-temperature air conditioning device, comprising a compressor, a condenser, a throttling and cooling pipeline assembly, and an evaporator, which are connected in sequence to form a cycle; wherein, the throttling and cooling pipeline assembly includes throttle valves, a medium-pressure pipeline, a low-pressure pipeline, and a booster pipeline; the throttle valves are configured to enable a pressure of refrigerant in the low-pressure pipeline to be lower than a pressure of refrigerant in the medium-pressure pipeline; the medium-pressure pipeline and the low-pressure pipeline are connected in parallel; components to be cooled are disposed in the low-pressure pipeline; an outlet of the low-pressure pipeline is connected to an inlet of the booster pipeline, and an outlet of the booster pipeline is connected to the evaporator; a booster pump is arranged in the booster pipeline;
the medium-pressure pipeline and the low-pressure pipeline are connected in parallel between the condenser and the evaporator;
the throttle valves include a first throttle valve disposed in the medium-pressure pipeline, and a second throttle valve disposed in the low-pressure pipeline; and a pressure regulation capacity of the second throttle valve is greater than a pressure regulation capacity of the first throttle valve.

5. A high-temperature air conditioning device, comprising a compressor, a condenser, a throttling and cooling pipeline assembly, and an evaporator, which are connected in sequence to form a cycle; wherein, the throttling and cooling pipeline assembly includes throttle valves, a medium-pressure pipeline, a low-pressure pipeline, and a booster pipeline; the throttle valves are configured to enable a pressure of refrigerant in the low-pressure pipeline to be lower than a pressure of refrigerant in the medium-pressure pipeline; the medium-pressure pipeline and the low-pressure pipeline are connected in parallel; components to be cooled are disposed in the low-pressure pipeline; an outlet of the low-pressure pipeline is connected to an inlet of the booster pipeline, and an outlet of the booster pipeline is connected to the evaporator; a booster pump is arranged in the booster pipeline;
the throttle valves include a first throttle valve and a second throttle valve;
the medium-pressure pipeline and the low-pressure pipeline are connected in parallel, and the first throttle valve is arranged between the condenser, and an inlet of the medium-pressure pipeline and the low-pressure pipeline;
the second throttle valve is disposed in the low-pressure pipeline.

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Liu Hua
• Li Hongbo
• Zhang Zhiping
• Wang Sheng
• Sun Dongjun

Classifications

• F25B1/00 Primary

  Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence) · CPC title

• F25B41/39

  Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator · CPC title

• F25B5/04 Primary

  arranged in series · CPC title

• F25B41/385

  Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator · CPC title

• F25B2341/0012

  Ejectors with the cooled primary flow at high pressure · CPC title