# US 5,702,184 A · Device for thermally testing a temperature control element

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- Number: US 5,702,184 A
- Document ID: US5702184A
- Status: Granted
- Kind: A
- Application number: 08/677,388
- Filed: 1996-07-09
- Granted: 1997-12-30
- Earliest claimed: 1996-07-09
- Inventors: Su-Fen Chang
- Web page: https://patentgrep.com/patent/US5702184A

## CPC

- G01K 15/00: Testing or calibrating of thermometers
- G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00)

## Abstract

A temperature control element testing device includes a table provided with an inner hollow in which is situated a testing plate for placing one or more temperature control elements for testing, a heater, a heat conductive plate directly heated by the heater, a lower case for containing a heat transmitting fluid which receives heat from the heat conductive plate and transmits the heat to the testing plate, the heat thereby being transmitted to the testing plate only indirectly via the heat conductive plate and heat transmitting fluid to provide more even heating of the temperature control elements being tested. Signal lamps are used to show the highest and lowest temperature of the elements being tested.

## Claims

### Claim 1

A temperature control element testing assembly comprising:
a table having an open upper side and an inner hollow surrounded by a bottom wall and four side walls;
a testing device situated in said inner hollow of said table, the testing device including:
a heater having a flat shape;
a heat conductive plate placed on said heater;
a lower case having an open upper side, a bottom wall and four side walls, and an inner hollow defined by said bottom wall and said four side walls, said bottom wall of said lower case contacting an upper surface of said heat conductive plate;
a heat transmitting fluid contained in said inner hollow of said lower case;
an upper case having an open upper side, an open bottom side, and four side walls, said upper case being placed on an upper section of said lower case;
a testing plate having a flat shape, said testing plate being welded to lower ends of said four side walls of said lower case, wherein a bottom of said testing plate is immersed in said heat transmitting fluid; and
an upper lid for closing said open upper side of said upper case; and,
wherein said heater is arranged heated to be heated by electricity, said heat conductive plate is heated by said heater and transmits heat in an even and balanced manner to said heat transmitting fluid contained in said lower case, and said heat transmitting fluid transmits heat in an even and balanced manner to said testing plate, so that at least one temperature control element located on said testing plate is heated to a preset lowest limit and highest limit of temperature so as to the test temperature control characteristics of said temperature control element in an accurate and speedy way.

### Claim 2 (depends on 1)

The temperature control element testing assembly as claimed in claim 1, further comprising a layer of cotton provided on inner surfaces of said four side walls and said bottom wall of said inner hollow of said table for preserving heat inside said inner hollow of said table, an intermediate flat plate with frames in said inner hollow of said table, an operating panel extending upwardly from one of said side walls of said inner hollow of said table, said operating panel having a signal lamp section including plural signal lamps and temperature control switches, a cooler extending from said operating panel and inclined forward to face said inner hollow of said table, and flat foldable plates respectively provided on two opposite sides of a mouth of said inner hollow of said table.

### Claim 3 (depends on 1)

The temperature control element testing assembly as claimed in claim 1, wherein said inner hollow of said lower case and said testing plate further include a temperature controller connected with said table.

### Claim 4 (depends on 1)

The temperature control element testing assembly as claimed in claim 1, wherein said lower case further has four upper side walls extending up from upper ends of said four side walls surrounding said inner hollow of said lower case, one of said four side walls of said lower case has wire holes, said upper case has four edges projecting laterally from upper ends of said four side walls of said upper case, one of said four side walls of said upper case has wire holes, and said wire holes of said upper case coincide with said wire holes of said lower case when said four edges of said upper case are positioned between said four upper side walls of said lower case.

### Claim 5 (depends on 1)

The temperature control element testing assembly as claimed in claim 1, wherein said testing plate further includes a plurality of clips and a plurality of conductive sockets on an upper surface of said testing plate for respectively holding said at least one temperature control element and electrically connecting said at least one temperature control element to and operating panel.