Sun Power CryoTel MT Bedienungsanleitung

CryoTel

Family

Free-Piston Stirling Cryocoolers

OPERATING INSTRUCTIONS

Model : CryoTel M

Version

Issued:

March 25, 2010

Sunpo

wer Inc. CryoTel MT

Operating Instructions version 4

SUNPOWER

Athens, OH 45701 USA

www.sunpower.com

Manufactured by Sunpower, Inc., under the following patents: U.S. Pats 4,583,364; 4,602,174; 4,623,808; 4,649,283;

4,805,408; 4,864,232; 4,866,378; 4,912,409; 4,926,123; 5,003,777; 5,148,066; 5,342,1

76; 5,385,021; 5,450,521;

5,457,956; 5,461,859; 5,496,153; 5,502,968; 5,525,845; 5,537,820; 5,592,073; 5,642,088; 5,642,622; 5,715,693;

5,749,226; 5,775,273; 5,873,246; 5,941,079; 6,035,637; 6,038,874; 6,170,442; 6,199,381; 6,293,184; 6,446,336 B1;

6,536,3

26; 6,684,637; RE 38,337; 6,782,700; U.S. patents pending. Also: Australia Patents 676,805; 677,518; 680,770;

685,997; 701,785; 709,315; 753,580;754032. Brazil PI 950368

5; PI 960 8885

0; PI 9710742

5; PI 9713840

1; PI

9713840

1. Canada patent 2,184,4

73. EPO 0655120 1B issued in France, Italy, UK, Netherlands, Sweden and

Germany (as DE 69329862.6

08). EPO 0693160 issued in Italy, UK, Netherlands France, Germany (as DE 69403468

T2); EPO 0754364 1B issued in France, Italy, UK, Netherlands and Germany (

as DE 69526217.3

08). EPO 0783618 1B

issued in France, Italy, UK, Netherlands and Germany (as DE 69518926.3

08). EPO 0878014 1B issued in France, Italy,

UK, Netherlands and Germany (as DE 69611387.2

-08). EPO 0885413 1B issued in France, Italy, UK, Nether

lands and

Germany (as DE 69627894.4

08). Italy 1297082. UK Patent No. 0,218,682; UK 2,334,307; UK 2,330,651. DBP No.

0,218,682 (Germany).

India Patents 177477, 178274, 185034; 185035. Republic of Korea patents 0202290; 0292453; 0301548; 0309486;

032009

3. Mexico patents 184451; 194065; 197407; 201368. New Zealand Patents No. 263331; 282959; 319499;

302849; 517329. Singapore Patent P

No. 48360; 51842; 87422; 87423; 87424. Taiwan patent NI

77875.

Japan Patents

Patents pending in United Kingdom, Germany, Italy, France, Netherlands, Sweden, Brazil, Japan, Republic of Korea,

India, China, Singapore.

Intellectual Property Declaration

Sunpower Inc. CryoTel MT Operating Instructions version 4

Sunpower, the Sunpower graphic identifier, and CryoTel are trade

marks of Sunpower, Inc. and

are registered in the U.S. and other countries.

Other products, logos, and Company names

mentioned herein may be trademarks of their respective owners.

Sunpo

wer Inc. CryoTel MT

Operating Instructions version 4

Table of Contents

Introduction .5

II.

Precaution

s (Dos and Don ts) .6

III.

Unpacking

IV.

Mechanical Mounting

Attachment of Heat Load to Cold Finger

VI.

Cold End Vacuum

...9

VII.

Feedthroughs

. . 10

VIII.

Temperature Sensor

IX.

Heat Rejection

.13

A. Water Jacke

t ..13

B. Copper Fins .. 14

C. Conducting Solid .. 14

CryoTel Operation

. 15

A. Preparati

B. Beginning Oper

ation .15

C. Operation Shu

tdown . 17

XI.

LED and

5 Pin Connector

ummary

.. .. 18

XII.

CryoTel

Serial Communications Command Reference

. 20

A. Serial Interface Specifications . . 20

B. Controller Connector Wiring Information

C. CryoTel MT Terminal Emulator

Commands

Remote On

Off

con

trol.... . 21

. Allowable Number Form

ats .. 22

Sunpower Inc. CryoTel

Operating Instructions version

4 3

FIGURES

Figure 1: CryoTel M

... . 5

Figure 2: CryoTe

l Cryocooler .. ... 7

Figure 3: Pressure Vessel Mounting Holes . 8

Figure 4: Weld Flange holes

Figure 5: Cold Tip M3

Mounting Holes . 9

Figure 6: Power Cable . 10

Figure

7: Rear Pressure Vessel End Plate

Figure 8

: Temperature Sensor and W

iring Harness . 11

Figure 9

: Test Cap Ass

embly

Figure 10

: Controller

Temperature Sensor

Connector .. 13

Figure 11

: Water Jacket Heat

Rejection

igure 12

: Cooling Fin Heat

Rejection

Figure 13: CryoTel M

T Contro

l Board .16

Figure 14: Controller LED s and 5 pin Connector .18

Figure 15: Optocoupler Circuit ..18

Sunpower Inc. CryoTel

Operating Instructions version

4 4

This pa

ge intentionally left blank.

Sunpower Inc. CryoTel

Operating Instructions version

4 5

Introduction

Sunpower, Inc. is pleased to present this manual with your newly-

purchased CryoTel model

cryocooler. As the world leader in free

piston Stirling cryocooling, Sunpower fully supports its

products and is pl

eased to hear of any comments or concerns from new or existing clients.

CryoTel

T Operating Instructions

The Sunpower cryocooler is a precision instrument; robust in many ways but fragile in others.

This operating manual provides standard

use instruct

ions and precautions. Please post where

technicians will be working with the unit. Please do not assume that if a warning or instruction

is not included here, a particular test or application of this unit is acceptable. It may not be. If

you have any q

uestions about this unit, or about any tests or applications you intend to perform,

please contact Sunpower support service at phone (740)

-594-

2221;

cryo

[email protected]

Figure 1

: CryoT

CryoTel MT dimensions:

length with

balancer: 223 mm (8.9 in); length without balancer: 183 mm (7.2 in); diameter:

73 mm (2.9 in);

mass: 1.95 kg

Sunpower Inc. CryoTel

Operating Instructions version

4 6

II. Precautions (Dos and Don ts)

Although the CryoTel M

T is mechanically robust, it can be damaged if not handled properly

when in operation or when removing it from its packaging. The handling and operational

Dos

and

Don ts

are listed below. Re

fer to the diagram of the CryoTel MT in Figure 2.

CRITICAL!

Do not operate the cryocooler without adequate cooling at the heat

rejection site. Overheating the cryocooler

will

cause permanent damage.

DON T

Pick up the cryocooler by the cold finger

Set

the cryocooler on the cold tip.

Allow the cold finger to be dented. The slightest dent will render the unit inoperable.

Drill holes, or in any other way puncture, or attempt to modify, the pressure vessel.

Operate the unit without proper cooling. Heat must be removed from the copper heat

rejection area of the cryocooler. If the cooler is provided with external cooling fins, air must

be forced over the fins and the flow path should not be obstructed.

6. Puncture or otherwise damage the copper

service

tube.

Subj

ect the electrical feedthroughs to mechanical stress; i.e. axial or radial movements,

axial loads, blows, or the like.

8. Mount the cooler by suspending it from the balance absorber mounting bolt.

Apply clamping pressure to the pressure vessel

(labeled in Fig

ure 2)

10. Rigidly attach the absorber stud to ground. Instead, let the cooler float via a rubber

bushing or other means of articulation.

11.

Remove the protective cover on the cold weld on the end of the copper charge tube. Do not

subject the cover to blow

12.

Control power to the cryocooler by making or breaking the power leads between the

controller and the cryocooler.

13.

Use an external, automatic, closed loop control system which attempts to control the

cryocooler operation by varying the setpoint settings in the cryocooler controller.

Check with Sunpower before making any modifications to the cryocooler

Note that if the control board is installed in an enclosure, cooling must be provided.

3. If the cooler is operating in a laboratory test mode with heaters

providing the thermal

load to the cold tip, interlocks should be provided so that the heater cannot operate

unless the cryocooler is running. This will prevent accidental overheating of the cold

tip.

Sunpower Inc. CryoTel

Operating Instructions version

4 7

Figure 2

: CryoTel

Cryocooler

. Unpacking

When unpacking or handling, only hold the cryocooler by the pressure vessel or the transition

(see Figure 2). Do not hold or support the cryocooler by holding the cold finger.

The

CryoTel

T may sit horizontally on a level bench top or table, but the

cooler must be

supported to prohibit rolling. The cold finger must be prot

ected from any contact as well. The

cold finger is delicate. Any deformation of the cold finger, such as small dents, bending, etc.

will ruin the cryocooler.

In End

Out End

Vibration Absorber

Pressure Vessel

Mounting Holes

Transition

Service

Tube

Feedthroughs

Heat Rejection

Cold Finger

Cold Tip

Sunpower Inc. CryoTel

Operating Instructions version

4 8

. Mechanical Mou

nting

The CryoTel

MT has a thick metal end plate on the out end of the pressure vessel nearest

the passive vibration absorber. M4 threaded holes on the outer diameter of the transition and

end plate are designed for attachment of the cooler to an exter

nal mechanical structure for

testing or integration into the application. These can be seen in Figure 3.

On the face of the external copper ring that rejects heat from the cooler is a stainless steel plate.

The plate has four M3 threaded holes that can b

e used for attaching a removable NW50 or

customer specified vacuum flange (see Figure 4). A vacuum flange can also be welded to this

plate

, but must be done with a low energy weld such as plasma or micro TIG. It is

recommended that, if needed, the custom

er allow Sunpower to perform the welding operation.

The mechanical structure including the cryostat attachment plate, heat rejection copper, and

transition have been designed to allow mounting the entire assembly by the cryostat and

cantilevering the cool

er and vibration absorber from the cryostat in a given application.

V. Attachment of Heat Load to Cold Finger

The copper cold tip at the end of the cold finger has four M

threaded holes that can be used for

mounting equipment to the

cold tip for applications or tests (see Figure 5). The application of

force to the cold tip must be handled with care and in accordance with these not

exceed

limits:

Cantilevered force, cooler

not

in operation: do not exceed a cantilevered force

on th

e cold finger (static or shock) > 100 N (10.20kg).

Cantilevered force, cooler

operation: do not permit the heat load apparatus to

deliver force to the cold finger (static or shock) > 30 N (3.05 kg)

Vertical loading: do not exceed a pure tension or co

mpression load > 300 N

(30.50 kg)

Torque

, cold finger

: do not exceed a load >16 N*m (

142 in*lbs

)

Threaded

Mounting

Holes

2 of 4 M3

Threaded

holes

Figure 3:

Pressure Vessel Mounting Holes

Figure 4:

Weld Flange Holes

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