Heat exchange system with siphon for draining a condensate

Patent metadata

Field	Value
Publication number	US-10852035-B2
Application number	US-201615781466-A
Country	US
Kind code	B2
Filing date	Dec 6, 2016
Priority date	Dec 14, 2015
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A heat exchange system includes a heat exchange main unit having a gas channel and a fluid channel configured such that a fluid in the fluid channel can exchange heat with a flue gas in the gas channel, a housing, a drain collecting part arranged to collect condensate from the flue gas, and a siphon detachably attached to the drain collecting part to prevent release of the flue gas from a condensate outlet formed in the siphon. The siphon has a tubular body, a condensate inlet formed on one end side, and the condensate outlet formed on an other end side. The tubular body has an attaching part to detachably attach the tubular body to the drain collecting part through a hole formed within a wall of the housing, and a grip located outside the housing when the tubular body is attached to the drain collecting part.

First claim

The invention claimed is:

1. A heat exchange system comprising:
a heat exchange main unit having a gas channel and a fluid channel configured such that a fluid in the fluid channel can exchange heat with a flue gas in the gas channel in use,
a housing accommodating the heat exchange main unit;
a drain collecting part arranged inside the housing to collect condensate from the flue gas; and
a siphon detachably attached to the drain collecting part to prevent release of the flue gas from a condensate outlet formed therein,
the siphon having a tubular body, a condensate inlet formed on one end side of the tubular body, and the condensate outlet formed on an other end side of the tubular body,
the tubular body having
an attaching part arranged on the end side of the tubular body on which the condensate inlet is formed that is usable to detachably attach the tubular body to the drain collecting part through a hole formed within a wall of the housing, and
a grip arranged on the other end side of the tubular body on which the condensate outlet is formed to be located outside the housing when the tubular body is attached to the drain collecting part.

2. The heat exchange system according to claim 1 , wherein
the tubular body is configured such that the tubular body filled with a liquid is attachable to the drain collecting part.

3. The heat exchange system according to claim 1 , wherein
the attaching part defines the condensate inlet of the siphon.

4. The heat exchange system according to claim 3 , wherein
at least part of the attaching part has a cylinder shape and has a thread, and
at least part of the drain collecting part has a cylinder shape and has a thread corresponding to the thread of the attaching part.

5. The heat exchange system according to claim 3 , wherein
the tubular body of the siphon has a cylinder shape.

6. The heat exchange system according to claim 3 , wherein
the tubular body further has a contact member which, when the tubular body is attached to the drain collecting part, is located outside the housing and contacts an outside surface of the housing.

7. The heat exchange system according to claim 1 , wherein
at least part of the attaching part has a cylinder shape and has a thread, and
at least part of the drain collecting part has a cylinder shape and has a thread corresponding to the thread of the attaching part.

8. The heat exchange system according to claim 7 , wherein
the tubular body of the siphon has a cylinder shape.

9. The heat exchange system according to claim 7 , wherein
the tubular body further has a contact member which, when the tubular body is attached to the drain collecting part, is located outside the housing and contacts an outside surface of the housing.

10. The heat exchange system according to claim 1 , wherein
the tubular body of the siphon has a cylinder shape.

11. The heat exchange system according to claim 10 , wherein
the tubular body further has a contact member which, when the tubular body is attached to the drain collecting part, is located outside the housing and contacts an outside surface of the housing.

12. The heat exchange system according to claim 1 , wherein
the tubular body further has a contact member which, when the tubular body is attached to the drain collecting part, is located outside the housing and contacts an outside surface of the housing.

13. The heat exchange system according to claim 12 , wherein
the contact member is integrally formed on the grip.

14. The heat exchange system according to claim 1 , wherein
a slip prevention structure is formed on a surface of the grip.

15. The heat exchange system according to claim 14 , wherein
the slip prevention structure includes at least one of a groove and a projection formed on the surface of the grip.

16. The heat exchange system according claim 1 , wherein
the siphon further has a passage portion configured to be accommodated in the tubular body, and to be detachably attached to the tubular body.

17. The heat exchange system according to claim 16 , wherein
at least one spacer is arranged between an inner surface of the tubular body and an outer surface of the passage portion.

18. The heat exchange system according to claim 16 , wherein
the passage portion has a blind-ended tubular shape and forms a condensate passage including an outer passage and an inner passage,
the outer passage is formed between an outer surface of the passage portion and an inner surface of the tubular body, and
the inner passage is formed along the inner surface of the passage portion.

19. The heat exchange system according to claim 18 , wherein
the tubular body further has a tubular member configured to be located inside the passage portion and to divide the inner passage into a core passage and a middle passage,
the core passage is formed by the inner surface of the tubular member, and
the middle passage is formed between the outer surface of the tubular member and the inner surface of the passage portion.

20. The heat exchanger system according to claim 19 , wherein
the tubular member is configured such that the core passage starts at the condensate inlet formed in the tubular body, and
the tubular body and the passage portion are configured such that the outer passage ends at the condensate outlet formed in the tubular body.

Assignees

• Daikin Ind Ltd
• Daikin Europe Nv

Inventors

• Kilic Serhan M
• Peker Hakan
• Akyol Abdulkadir

Classifications

• F28F7/02

  Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} · CPC title

• F28F2255/14

  molded · CPC title

• F28D2021/0024

  for combustion apparatus, e.g. for boilers · CPC title

• F28D21/0003

  the heat being recuperated from exhaust gases (F28D21/0014 takes precedence) · CPC title

• Y02B30/00

  Energy efficient heating, ventilation or air conditioning [HVAC] · CPC title