Air separation device and refrigerating and freezing device

Patent metadata

Field	Value
Publication number	US-11517850-B2
Application number	US-201716466293-A
Country	US
Kind code	B2
Filing date	Dec 1, 2017
Priority date	Dec 2, 2016
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

An air separation device and a refrigerating and freezing device. The air separation device comprises a support frame and an air separation membrane, wherein a supporting surface with a channel and an enriched-gas collection chamber communicated with the channel are formed in the support frame. The air separation membrane laid on the support surface of the support frame and configured to enable more of a specific gas than other gases in airflow of the space around the air separation device to enter the enriched-gas collection chamber through the air separation membrane. According to the air separation device provided by the present invention, the support frame is specially designed to adopt the structure provided with the support surface and the enriched-gas collection chamber, the channel communicated with the enriched-gas collection chamber is formed on the support surface, and the air separation membrane is disposed on the support surface.

First claim

What is claimed is:

1. An air separation device, comprising:
a support frame on which a support surface with a channel and an enriched-gas collection chamber communicated with the channel are formed; and
an air separation membrane laid on the support surface of the support frame and configured to enable more of a specific gas than other gases in airflow of a space around the air separation device to enter the enriched-gas collection chamber through the air separation membrane;
wherein the support frame comprises:
an air extraction hole communicated with the enriched-gas collection chamber to allow the specific gas in the enriched-gas collection chamber to be output;
a side frame in which a receiving chamber having an opening is defined; and
a plurality of ribbed plates disposed at intervals at the opening of the receiving chamber; wherein
outer side surfaces of the plurality of ribbed plates form the support surface, and edges of the outer side surfaces of the ribbed plates are chamfered;
a gap between two adjacent ribbed plates forms the channel; and
a cavity, located at the inner sides of the plurality of ribbed plates, of the receiving chamber forms the enriched-gas collection chamber;
wherein the air extraction hole is formed in a circumferential side of the side frame, and an axis of the air extraction hole is on a perpendicular bisection plane of the support surface.

2. The air separation device according to claim 1 , wherein:
the axis of the air extraction hole and the plurality of ribbed plates extend in the same direction.

3. The air separation device according to claim 2 , wherein:
the axis of the air extraction hole and inner side surfaces of the plurality of ribbed plates are located on the same plane.

4. The air separation device according to claim 1 , wherein:
the air extraction hole protrudes outwards from the support surface;
the air extraction hole is opposite to two of the ribbed plates; and the outer side surfaces, close to the air extraction hole, of the two ribbed plates are upraised outwards to an upraising extent different from the outer side surfaces of others of the ribbed plates to respectively form two bulges, and the two bulges form a flow guide channel aligned with the air extraction hole to increase air inflow of the air extraction hole.

5. The air separation device according to claim 1 , wherein:
a surface at the periphery of the opening of the side frame sinks to be flush with the support surface so as to form a mounting groove into which the air separation membrane is embedded; and
the surface at the periphery of the opening of the side frame further sinks at the rim of the mounting groove to form a round of annular groove for being filled with a sealant, such that the air separation membrane is mounted in the mounting groove in a sealed manner.

6. The air separation device according to claim 1 , wherein the air separation membrane is an oxygen-enriching membrane, and the specific gas is oxygen.

7. A refrigerating and freezing device, comprising:
a cabinet with a storage space defined therein, wherein an air-conditioning freshness-keeping space is formed in the storage space;
the air separation device of claim 6 , the space around which is communicated with the air-conditioning freshness-keeping space; and
an air pump of which an inlet end is communicated with the enriched-gas collection chamber of the air separation device through a pipeline to extract and discharge a gas that permeates into the enriched-gas collection chamber out of the air-conditioning freshness-keeping space.

8. The air separation device according to claim 5 , wherein the air separation membrane is pre-secured into the mounting groove by a round of double-faced adhesive tape first, then the annular groove is filled with a round of sealant.

Assignees

• Qingdao Haier Joint Stock Co Ltd

Inventors

• Zhu Xiaobing
• Jiang Bo
• Wang Lei
• Zhang Hao
• Wang Jing

Classifications

• F25D11/00

  Self-contained movable devices, e.g. domestic refrigerators · CPC title

• F25D2317/041

  by purification · CPC title

• F17C5/06

  for filling with compressed gases · CPC title

• B01D53/22 Primary

  by diffusion (manufacturing semi-permeable membranes B01D67/00; form, structure or properties of semi-permeable membranes B01D69/00; material for semi-permeable membranes B01D71/00) · CPC title

• F17C2221/011

  Oxygen · CPC title