HEAT EXCHANGE APPARATUS

• US 20200132385A1
• Filed: 06/25/2018
• Published: 04/30/2020
• Est. Priority Date: 06/26/2017
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: CHOI, Jaeheuk, KIM, Kyungrock, RYU, Byoungjin
• Granted Patent: US 11,280,553 B2
• Time in Patent Office: Days
• CPC Class Codes: A47F 3/04 air-conditioned, refrigerated refrigerators F25D; heating arrangements specially adapted for transparent or reflecting areas H05B3/84
• CPC Class Codes: F25B 39/02 Evaporators
• CPC Class Codes: F25B 40/00 Subcoolers, desuperheaters or superheaters
• CPC Class Codes: F28D 2021/0068 for refrigerant cycles
• CPC Class Codes: F28D 7/10 the conduits being arranged one within the other, e.g. concentrically multiple wall tubes for leak detection F28F1/003
• CPC Class Codes: F28D 7/16 the conduits being arranged in parallel spaced relation F28D7/0008 - F28D7/0058 take precedence; F28D7/02 - F28D7/10 take precedence
• CPC Class Codes: F28D 7/1669 the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube

Abstract

The present invention relates to a heat exchanger. The heat exchanger according to the present invention includes: an outer pipe; a first sub heat exchange part and a second sub heat exchange part which are disposed inside the outer pipe, and in which a second fluid flows around a first fluid pipe through which a first fluid flows; and a main heat exchange part which is disposed, inside the outer pipe, between the first sub heat exchange part and the second sub heat exchange part, and in which the first fluid flows around a plurality of narrow pipes through which the second fluid flows.

Claims

1. A heat exchanger comprising:

an outer pipe;

a first sub heat exchange part and a second sub heat exchange part which are disposed inside the outer pipe, and in which a second fluid flows around a first fluid pipe through which a first fluid flows; and

a main heat exchange part which is disposed, inside the outer pipe, between the first sub heat exchange part and the second sub heat exchange part, and in which the first fluid flows around a plurality of narrow pipes through which the second fluid flows.

2. The heat exchanger of claim 1, further comprising:

a first inner fixing plate partitioning the first sub heat exchange part and the main heat exchange part; and

a second inner fixing plate partitioning the main heat exchange part and the second sub heat exchange part.

3. The heat exchanger of claim 2, wherein the first inner fixing plate and the second inner fixing plate fix the plurality of narrow pipes, and the plurality of narrow pipes have one end that is opened toward the first sub heat exchange part, and the other end that is opened toward the second sub heat exchange part.

4. The heat exchanger of claim 2, wherein the first inner fixing plate fixes the first fluid pipe disposed in the first sub heat exchange part, the second inner fixing plate fixes the first fluid pipe disposed in the second sub heat exchange part, and

each of the first fluid pipe fixed to the first inner fixing plate and the second fluid pipe fixed to the second inner fixing plate is opened toward the main heat exchange part.

5. The heat exchanger of claim 1, wherein, in the first sub heat exchange part, the first fluid passed through the main heat exchange part flows to the first fluid pipe disposed in the first sub heat exchange part, and the second fluid introduced into an inflow hole formed in one side of the outer pipe flows around the first fluid pipe.

6. The heat exchanger of claim 1, further comprising a first inner fixing plate partitioning the first sub heat exchange part and the main heat exchange part,

wherein the first inner fixing plate fixes the plurality of narrow pipes into which the second fluid flowing in the first sub heat exchange part flows, and the first fluid pipe into which the first fluid flowing in the main heat exchanger flows.

7. The heat exchanger of claim 1, further comprising a second inner fixing plate partitioning the main heat exchange part and the second sub heat exchange part,

wherein the second inner fixing plate fixes the plurality of narrow pipes which are disposed in the main heat exchange part and discharge the second fluid to the second sub heat exchange part, and the first fluid pipe which is disposed in the second sub heat exchange part and discharge the first fluid to the main heat exchange part.

8. A heat exchanger comprising:

an outer pipe which has an inflow hole through which a second fluid flowing a second fluid pipe is introduced, a discharge hole through which the second fluid is discharged, and a space in which a first fluid and the second fluid exchange heat;

a first fluid pipe which partly disposed inside the outer pipe and through which the first fluid flows;

a plurality of narrow pipes which are disposed inside the outer pipe and allow the second fluid introduced into the inflow hole of the outer pipe to flow; and

an inner fixing plate that partitions a space in which the first fluid pipe and the plurality of narrow pipes are disposed,

wherein the first fluid pipe and the plurality of narrow pipes fixed to the inner fixing plate are opened in different directions.

9. The heat exchanger of claim 8, wherein the outer pipe has a shape in which both ends are opened, and the first fluid pipe is inserted into the outer pipe through the opened both ends of the outer pipe.

10. The heat exchanger of claim 9, wherein the both ends of the outer pipe comprises an end fixing plate for sealing between the opened both ends of the outer pipe and the first fluid pipe.

11. The heat exchanger of claim 8, wherein the outer pipe comprises:

an inflow nozzle which is connected to the second fluid pipe having a circumferential surface on which the second fluid flows, and has an inflow hole through which the second fluid flows into the outer pipe; and

a discharge nozzle which is connected to the second fluid pipe through which the second fluid flows, and has a discharge hole that discharges the second fluid inside the outer pipe.

12. The heat exchanger of claim 11, wherein the first fluid pipe maintains a straight pipe shape when connected to the outer shape, and the second fluid pipe has a bent shape when connected to the inflow nozzle or the discharge nozzle.

13. The heat exchanger of claim 8, wherein the inner fixing plate has a circular plate shape, a central hole having a center through which the first fluid pipe is inserted, and a plurality of narrow pipe holes into which the plurality of narrow pipes are inserted, that are formed around the central hole.

14. The heat exchanger of claim 8, wherein a ratio of a cross-sectional area due to an inner diameter of the second fluid pipe through which the second fluid flows and a total cross-sectional area according to an inner diameter of the plurality of narrow pipes is 0.05 to 0.4.