Gas chromatography equipment

Patent metadata

Field	Value
Publication number	US-9689847-B2
Application number	US-201214419513-A
Country	US
Kind code	B2
Filing date	Aug 7, 2012
Priority date	Aug 7, 2012
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A gas chromatography equipment includes a sample introducer, a detector, a column module, and an oven including a housing. A sub-space is provided in a projection section projecting downward from a portion of a bottom face of the housing communicates with a main space of the housing. A column module attaching section is provided outside the housing and below the main space. A fixed side face, which faces the column module attaching section, of the projection section serves as an attachment face for attaching the column module. The column module is attached to the housing in such a way that the main flat surface of the column module is horizontally positioned with an end face of the column module being the attachment face.

First claim

The invention claimed is:

1. A gas chromatography equipment comprising:
a sample introducer;
a detector;
a column module accommodating a separation column for separating a component from a sample introduced through the sample introducer, the column module including a heater, being configured to independently control temperature of the separation column by the heater, and an end of the separation column being communicated with an end face, which is perpendicular to a main flat surface having the largest area of the column module; and
an oven including a housing which accommodates at least a portion of a tube connecting the sample introducer and the column module and at least a portion of a tube connecting the column module and the detector, a heater for heating inside the housing, and a fan for providing mixing inside the housing, wherein
a sub-space is provided in a projection section projecting downward from a portion of a bottom face of the housing of the oven, the sub-space communicating with a main space that is a space in the housing other than the sub-space,
a column module attaching section for attaching the column module is provided outside the housing and below the main space,
wherein a fixed side face, which faces the column module attaching section, of the projection section serves as an attachment face for attaching the column module, and wherein the attachment face is provided with a connection-opening through which an end of a tube in the housing and an end of the separation column are connected, and
wherein the column module is attached to the housing in such a way that the main flat surface of the column module is horizontally positioned with the end face of the column module through which the end of the separation column is drawn out being the attachment face.

2. The gas chromatography equipment according to claim 1 , wherein a whole of the column module is accommodated below the main space.

3. The gas chromatography equipment according to claim 1 , wherein a plurality of connection-openings are provided in the side face of the projection section with respective column module being attached to each connection-opening.

4. The gas chromatography equipment according to claim 1 , wherein
at least a portion of a side face, other than the attachment face of the housing of the oven, perpendicular to the attachment face serves as an open/close side face allowed to open and close, and
the open/close side face constitutes a side of the connection-opening so that the column module can be drawn out toward the open/close side face when the open/close side face is opened.

5. The gas chromatography equipment according to claim 1 , wherein the fan is an axial-flow fan, arranged in a side of the main space of the oven in proximity to a wall face of the housing with a gap between the fan and the wall face, and configured to circulate air heated by the heater along a rotational axis of the fan.

6. The gas chromatography equipment according to claim 1 , wherein the fan is a centrifugal fan arranged in a side of the main space of the oven in proximity to a wall face of the housing, the centrifugal fan being configured to supply air, inhaled from the main space, along a radius of gyration to circulate air heated by the heater along the wall face.

7. The gas chromatography equipment according to claim 6 further comprising,
a flow control plate arranged in the main space close to the fan so as to be normal to a rotation axis of the fan, the flow control plate including an air hole in a location corresponding to the rotation axis of the fan and the flow control plate restricting an air passage of air sent out from the fan to a gap between the flow control plate and the wall face of the housing and also restricting an area through which air is inhaled toward the fan to an area around the rotation axis of the fan.

8. The gas chromatography equipment according to claim 1 , further comprising:
a temperature sensor that is provided in the oven and detects temperature inside the oven; and
an oven temperature controller that controls an output of the heater or a rotational speed of the fan according to a temperature detected by the temperature sensor.

Assignees

• Matsuoka Satoshi
• Nishimoto Takahiro
• Kanai Masaki
• Nishino Masanori
• Morii Masato
• Shimadzu Corp

Inventors

• Matsuoka Satoshi
• Nishimoto Takahiro
• Kanai Masaki
• Nishino Masanori
• Morii Masato

Classifications

• G01N2030/025

  Gas chromatography · CPC title

• G01N30/54 Primary

  Temperature · CPC title

• G01N30/30

  of temperature · CPC title

• B01D53/025

  with wetted adsorbents; Chromatography (analytical chromatography G01N30/00 - G01N30/96; for liquids B01D15/08) · CPC title

• G01N2030/3084

  ovens · CPC title