Multi-chamber heat treatment device

Patent metadata

Field	Value
Publication number	US-2017307296-A1
Application number	US-201715646489-A
Country	US
Kind code	A1
Filing date	Jul 11, 2017
Priority date	Mar 4, 2015
Publication date	Oct 26, 2017
Grant date	—

Abstract

A multi-chamber heat treatment device according to the present disclosure in which heating chambers are disposed with an intermediate transport chamber interposed therebetween in a top view, and a treatment object is stored in a heating chamber via the intermediate transport chamber, wherein the multi-chamber heat treatment device includes a gas cooling chamber which cools the treatment object using a cooling gas; and a cooling gas circulation device which includes an gas inlet and a gas outlet.

First claim

What is claimed is:

1 . A multi-chamber heat treatment device in which heating chambers are disposed with an intermediate transport chamber interposed therebetween when viewed in a top view, and a treatment object is stored in the heating chambers via the intermediate transport chamber, the multi-chamber heat treatment device comprising:
a gas cooling chamber which is provided adjacent to the intermediate transport chamber in a top view and configured to cool the treatment object using a cooling gas; and a cooling gas circulation device which includes a gas inlet which extends toward the treatment object in the gas cooling chamber, and a gas outlet which extends toward the treatment object and faces the gas inlet with the treatment object interposed between the gas inlet and the gas outlet, the cooling gas circulation device being configured to blow the cooling gas from the gas inlet and exhausting the cooling gas from the gas outlet.

2 . The multi-chamber heat treatment device according to claim 1 , wherein the cooling gas circulation device includes at least:
a gas circulation passage in which one end is the gas inlet, the other end is the gas outlet, and the cooling gas is circulated via the gas cooling chamber; a blower provided at an intermediate portion of the gas circulation passage to allow the cooling gas to flow therethrough; and a gas cooler provided on an upstream side of the blower to cool the cooling gas exhausted from the gas cooling chamber.

3 . The multi-chamber heat treatment device according to claim 1 , wherein the gas inlet extends just above the treatment object in the gas cooling chamber, and
the gas outlet extends just below the treatment object in the gas cooling chamber.

4 . The multi-chamber heat treatment device according to claim 1 , wherein the gas cooling chamber has an annular shape in a top view; and
a center of the gas inlet in the cooling gas circulation device is displaced in a horizontal direction with respect to a center of the gas cooling chamber.

5 . The multi-chamber heat treatment device according to claim 1 , wherein a partition door configured to partition the gas cooling chamber and the intermediate transport chamber is provided to project into the gas cooling chamber.

6 . The multi-chamber heat treatment device according to claim 1 , further comprising:
a mist cooling chamber below the intermediate transport chamber to cool the treatment object using a mist of a predetermined cooling medium.

7 . The multi-chamber heat treatment device according to claim 1 , further comprising:
an oil cooling chamber below the intermediate transport chamber to cool the treatment object using a predetermined cooling oil.

8 . The multi-chamber heat treatment device according to claim 1 , wherein the gas cooling chamber has a work entrance through which the treatment object enters and exits between the gas cooling chamber and the outside.

Assignees

• Ihi Corp
• Ihi Machinery & Furnace Co Ltd

Inventors

• Katsumata Kazuhiko
• Isomoto Kaoru
• Nakayama Akira

Classifications

• C21D1/613

  Gases; Liquefied or solidified normally gaseous material · CPC title

• F27D2007/045

  Fans · CPC title

• C21D1/00

  General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering · CPC title

• C21D9/0062

  Heat-treating apparatus with a cooling or quenching zone · CPC title

• C21D9/0018

  for charging, discharging or manipulation of charge · CPC title