Detector for liquid chromatograph

Patent metadata

Field	Value
Publication number	US-11828738-B2
Application number	US-202217567250-A
Country	US
Kind code	B2
Filing date	Jan 3, 2022
Priority date	Feb 2, 2021
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

A detector for a liquid chromatograph, includes a detector that detects components in liquid, a pipe that guides liquid to the detector, a casing that contains at least part of the pipe and the detector and has a bottom portion, and a thermal insulator provided on the bottom portion in the casing, wherein a discharge port is provided in the bottom portion of the casing, the thermal insulator has an upper surface and a lower surface, a first opening is provided in the upper surface of the thermal insulator, and a second opening is provided in the lower surface of the thermal insulator to overlap with the discharge port in a plan view, a flow path that guides liquid from the first opening to the second opening is provided in the thermal insulator, and the flow path has a bend portion.

First claim

I claim:

1. A detector for a liquid chromatograph, comprising:
a detector that detects components in liquid;
a pipe that guides liquid to the detector;
a casing that contains at least part of the pipe and the detector and has a bottom portion; and
a thermal insulator provided on the bottom portion in the casing, wherein
a discharge port is provided in the bottom portion of the casing,
the thermal insulator has an upper surface and a lower surface,
a first opening is provided in the upper surface of the thermal insulator, and a second opening is provided in the lower surface of the thermal insulator to overlap with the discharge port in a plan view,
a flow path that guides liquid from the first opening to the second opening is provided in the thermal insulator, and
the flow path has a bend portion.

2. The detector for a liquid chromatograph, according to claim 1 , wherein
the first opening is provided at a position that does not overlap with the discharge port in a plan view.

3. The detector for a liquid chromatograph, according to claim 1 , wherein
the thermal insulator has a side surface, and
the flow path includes a concave portion extending along the side surface of the thermal insulator to connect the first opening and the second opening to each other.

4. The detector for a liquid chromatograph, according to claim 3 , wherein
the thermal insulator has an end surface,
the concave portion has a first cutout portion formed in the side surface and the end surface and a second cutout portion formed in the side surface and the lower surface, and
the first cutout portion and the second cutout portion are coupled to each other to form the bend portion.

5. The detector for a liquid chromatograph, according to claim 1 , wherein
the flow path has a first portion extending in an up-and-down direction from the first opening and a second portion extending in a direction that intersects with the up-and-down direction from the second opening.

Assignees

• Shimadzu Corp

Inventors

• Iijima Yuki

Classifications

• G01N30/64 Primary

  Electrical detectors · CPC title

• G01N30/26

  Conditioning of the fluid carrier; Flow patterns · CPC title

• G01N2030/027

  Liquid chromatography · CPC title

• G01N2030/645

  electrical conductivity detectors · CPC title

• G01N2201/022

  Casings · CPC title