1.1 Name

1.2 Model

Three box cold and hot shock test chamber (water-cooled)

PW-CTS3-80-40

2. Purpose and Description

2.1 Scope of Application

1. This equipment is suitable for simulating the adaptability of various electrical and electronic products, as well as other products, components, and materials to rapid changes in ambient temperature for reliability testing. In some cases, it can also be used for environmental stress testingfilterExperiment.

2. Other uses may result in personal injury and equipment damage!

2.2 Limitations on Test Samples

1. Testing and storage of samples of flammable, explosive, and volatile substances

2. Testing and Storage of Corrosive Substance Samples Testing or Storage of Biological Samples

3. Testing and storage of strong electromagnetic emission source samples

3. Capacity and size

3.1 Volumetric capacity

make an appointment80L

3.2 Inner box dimensions

W (width) 400 mm * H (height) 500 mm * D (depth) 400 mm

3.3 Outer box dimensions

W (width) 1450mm * H (height) 1950mm * D (depth) 1750mm

reminder:Please refer to the final design confirmation of the three views for external dimensions!

4. Performance (the following indicators are for no-load performance)

4.1 Condition requirements

ambient temperature10℃——28℃，When unloaded (high ambient temperature affects cooling effect)

4.2 Structural Types

Three boxes (high-temperature storage area, low-temperature storage area, sample testing area) static airflow impactThe sample does not move during the high and low temperature conversion process.

4.2 Temperature Range

High temperature studio: heat storage rangeFrom 60 ℃ to+180℃

Low temperature studio: cold storage range0 ℃ to -55 ℃

Sample testing area: high temperature impact range60 ℃ to 150 ℃, low temperature impact range 0 ℃ to -50 ℃

4.4 Temperature fluctuation

Temperature fluctuations:±0.5℃

4.5 Temperature deviation

Temperature:≤± 1 ℃ (the average temperature displayed by the studio temperature controller minus the average temperature measured at the center point)

4.6 Temperature uniformity

≤ 2 ℃ (temperature uniformity is the arithmetic mean of the difference between the highest and lowest temperatures measured in each test)

4.7 Heating and cooling capacity of high and low temperature storage boxes

High temperature chamber: The heating rate is determined by+From 20 ℃ to+180 ℃ for approximately 45 minutes, with an average nonlinearity throughout the entire process

Low temperature box: cooling rate is determined by+20 ℃~-65 ℃ for about 60 minutes, with an average nonlinearity throughout the entire process

4.8 Test box indicators

Impact conversion time:Adjustable from 2 seconds to 3 minutes (defined as the high and low temperature conversion time of the test sample in 1.6.5 of GB2423.22, including the time to return to room temperature)

Temperature recovery time: ≤ 3 minutes (0.1 * sample test time) (empty load), （according to1.6.4 in GB2423.22 is defined as the conversion between high and low temperaturesTime for the temperature of the test chamber to reach the set value

Sample test lower limit time: greater than or equal to30 minutes (holding time after the temperature of the test chamber reaches the set value)

Continuous working time of the test chamber: greater than500 hours (the time during the experiment when the temperature will not be affected by the defrosting of the evaporator and the recovery of high and low temperature conversion)

4.9 Noise

noise≤ 70dB (measured in a soundproof room with low echo at an ambient temperature of 25 ℃; average value of 8 points tested; each test point is 1 meter horizontally from the noise source and 1 meter above the ground).

Noise reduction scheme:

1. The main source of noise, such as the compressor equipped with damping springs, can reduce noise and minimize the destructive factors caused by vibration, thereby extending the service life of the equipment.

2. High quality thickened sound-absorbing cotton is pasted on the inner wall of the refrigeration unit, which can effectively reduce the noise effect of the refrigeration unit.

3. Vibration isolation hoses are standard for connecting compressors and pipelines.

4.10 Power consumption

The refrigeration system of this machine is controlled by cold balance technology, based on the temperature requirements inside the boxPID control solenoid valve switch controls the flow of refrigerant to achieve the effect of cooling without heating and heating without coolingThe power consumption is significantly reduced compared to traditional thermal balance (where the cooling capacity is fixed and balanced by heating and humidification).

4.12 Meet the test standards

GB2423.22 Temperature Change Test

GB2423.1 Low temperature test method

GB2423.2 High temperature test method

GJB150.5 Temperature Shock Test

5. Structural part

notes

5.1 Structural characteristics

This device is designed with functional modules, and the main circuit and refrigeration configuration system are placed independently in functional sections (with the circuit part having independent space for dust prevention and heat dissipation), achieving isolation between the circuit and refrigeration system, making the system safer and more reliable

5.2 Structural Materials and Processes

Outer box: The frame is made of profiles, and the overall structure of the machine components is assembled. The cold plate is coated with electrostatic powder paint, and the color is computer white, which is neat, beautiful, and stable.

Inner box:SUS304 stainless steel plate seamless welding forming

The circuit and refrigeration cover plate adopts a key switch design, which is more convenient for maintenance and upkeep

5.3 Thermal insulation enclosure structure

High temperature resistant insulation material: rigid polyurethane foam+Fiberglass

5.4 Air conditioning channel

The high temperature zone, low temperature zone, testing zone, air damper, and air circulation system are shown in the following figure

5.6 Door

Left single door opening, door frame equipped with anti condensation electric heating device, using double sealed foam silicone sealing around to ensure separation between indoor and outdoor areas

5.7 Control Panel

Embedded built-in touch screen for better screen protection

5.8 Casters

Fuma wheels

5.9 Door handle

5.11 Test hole

This machine is on the left50MM1 pieces.

5.12 Product Placement Rack

bearing:20kg

5.13 Air source intake structure

Filter pressure reducing device

5.14 Drainage

Condensate drain outlet

6. Circuit system and main components

notes

6.1Distribution process

according toGB7251, GB2681, GB/T2682, GB50171, GB50256 are combined with the actual situation of the company and equipment to ensure that the electrical equipment meets the design control requirements for primary and secondary installation and wiring, and is neat, beautiful, and easy to inspect.

6.2power switch

6.3 Weak current power supply circuit

switch power supply

6.4 Load Circuit

AC contactor

6.5 Sensor

T-type thermocouple

6.6 Temperature control circuit

Solid state relay（SSR）

6.7 Safety protection circuit

Air Switch

7. Supply air temperature measurement system and main components

notes

7.1 Air supply method

centrifugal fan

7.2 Cycle Motor

Low voltage asynchronous high-temperature resistant long shaft motor

7.3 Wind turbine

Multi blade centrifugal circulating fanMade of aluminum alloy with reinforced axis and high and low temperature resistant rotating blades

8. Freezing system and main components

notes

8.1 Refrigeration method

This system adopts mechanical compression refrigeration, consisting of a compressor, condenser, expansion valve, and evaporator. The refrigerant boils at pressure and temperature, lower than the temperature of the object or fluid being cooled. The compressor continuously draws in the vapor generated in the evaporator, compresses it to the condensing pressure, and then sends it to the condenser for isobaric cooling and condensation into liquid under pressure. The heat released during refrigerant cooling and condensation is transferred to the cooling medium(usually water or air), the condensation temperature corresponding to the condensation pressure must be higher than the temperature of the cooling medium. The condensed liquid enters the evaporator through an expansion valve or other throttling components

The cooling medium of this device is water (water-cooled), using cascade refrigeration

8.3 System Process

1) Oxygen free copper tube gas shielded welding:

This method avoids the damage to the refrigeration system and compressor caused by the generation of oxides on the inner wall of copper pipes through traditional welding methods.

2) Vibration reduction measures:

A) Compressor: Spring damping, thickened and reinforced chassis to avoid chassis resonance

B) Refrigeration system: Optimize piping paths to reduce bends.

3) Insulation: Using imported Folex CLASS0 grade high-quality insulation pipes to prevent condensation and reduce losses

4) Control of key parameters in the system

Compressor return and exhaust temperature control: equipped with independent return and exhaust temperature control circuits, the controller intelligently controls the spray cooling solenoid valve to ensure that the return temperature does not exceed the operating range of the compressor; In harsh working conditions and abnormal situations, excessive exhaust is the main cause of compressor failure. Equipped with an exhaust temperature sensor, the compressor is protected by an alarm for high exhaust and shutdown

8.4 Compressor

Fully enclosed piston compressor

8.5 Refrigerant

Non fluorine environmental protectionHFC R404A, R23 (both with an ozone depletion index of 0)

8.6 Condenser (air-cooled)

Air cooled high-efficiency finned condenser.

8.7 Evaporator

Efficient multi-stage evaporator with hydrophilic film fins (thickened fins)

8.8 Freezing pipeline switch

Battery valve (Japan Road Palace)

8.9 Throttle device

Thermal expansion valve

Hot gas bypass valve（PTV10W）

8.10 Heat exchanger

plate heat exchanger

8.11 Other attachments

All are high-quality products from top international brands(The image on the right shows a dry filter)

oil separator

9. Heating and pneumatic system and main components

notes

9.1 Heating system

electrical heating

Temperature control method: ControllerPID uses solid-state relays (contactless periodic pulse switches) to control the heat generation of the heating tube and stabilize the temperature

9.2 Heating tube

nichrome wire

9.3 Air door cylinder

Adopting high-performance cylinders from Yadeke

10. Controller

notes

10.1 Control mode

High precision resistive touch screen+UNIQUE temperature control module from Japan.

10.2 Display

7-inch TFT true color LCD display screen (Resolution 800 * 480)

10.3 Power input

3 sets of inputs, supporting dry wet bulb PT100, thermocouple T, K

10.4 Accuracy

0.1 high-precision sampling

10.7 Output Mode

PID+SSR/SCR automatic bidirectional synchronous output

10.8 Software Features

Programming control software system1 set, with the following main functions:

1. Temperature and humidity curve:
Paperless recordsBuilt in recording program, the controller's internal memory can store 24-hour operation for 300 days

Can easily generate temperature and humidity curve files automatically and save them asXLS table;

2. Comprehensive interface:
Stay outsideUSB port: can directly connect to a printer, enabling local data to be printed via cable,

causeThe USB port allows for easy export of historical curves and other data using a USB flash drive.

Stay outsideLAN standard network interface: No need to configure a server specifically, it can be easily connected to the company's computer local area network. One can connect and monitor up to 16 devices, which is convenient and fast.

be equipped withRS-485 or RS232 standard communication interface, capable of online control and management with computers

3. Real time monitoring can achieve simultaneous monitoring of the operating status of 1-16 controllers, such as real-time data of monitoring controllers, signal point status, actual output status, etc

4. Timing control

Two sets of timing output control interfaces, paired with 10 time control modes, can provide switch signal output according to program requirements. Note that this is only a control signal, and the test power supply inside the box needs to be separately connected and equipped with a dedicated power supply system

5. Fault display

16 sets of fault alarm outputs, providing user-friendly prompts in both Chinese and English for the cause of the fault and troubleshooting methods

11. Protection function

notes

11.1standard configuration

1. Test sample over temperature protection (independent)

2. Main power supply with leakage protection circuit breaker switch

3. Over temperature protection switch in high temperature area

4. Compressor overload and overheating

5. Compressor high pressure protection

6. System overcurrent protection

7. Low temperature zone over temperature protection switch

8 Compressor Exhaust Temperature Protection

9. Compressor return air temperature protection

10 phase sequence protection

11 Fan overload protection

12. Other components

notes

12.1 Optional Accessories

not have

12.2 Shipping and Acceptance Data

1. Operation manual and maintenance manual

2. Control system software and software documentation

3. Equipment drawings: circuit diagrams, etc
4. This equipment has been tested by our company's quality inspection center before leaving the factory, and an inspection report with a validity period of one year has been issued

5. Acceptance form, etc

13. Installation conditions for use

notes

13.1. Equipment usage environment

1. Environmental temperature: 5℃-35℃

2. Relative humidity: not exceeding 85% R.H

3. Atmospheric pressure: 80kPa~106kPa

4. Flat and vibration free ground;

5. Choose well ventilated areas without direct sunlight or direct radiation from other heat sources;

6. There is no strong airflow around: When the surrounding air needs to flow forcibly, the airflow should not directly blow onto the box;

7. There is no strong electromagnetic field influence around;

8. There is no high concentration of dust or corrosive substances around

13.4. Compressed Air

This device requires clean compressed air to be provided

1) Pressure: 0.5~0.7Mpa

2) Flow rate: approximately 1300 liters per minute

The compressed air device is provided by the customer themselves

13.2. Use power supply voltage

1. Connect to a power supply of 380V AC (± 10%)

Three-phase line+Protect the grounding wire, with a grounding resistance of ≤ 4 Ω;

Power switch usage100A air switch

2. Maximum power of the machine:make an appointment 30 KW

3. Maximum operating current:make an appointment 40 A

4. Power frequency: 50±0.5Hz

Attention customers, please lead the main power cable to the equipmentWithin a range of 3 meters!

13.3. Placement of test products

The product should not be placed on the same horizontal plane for more than two-thirds of the area, and the air outlet and return outlet should not be blocked (at least from the air outlet and return outlet)10CM distance)

14. After sales service

notes

14.1

Free training for customers on operators and maintenance personnel(located in the location of our company or client)

The warranty period of the equipment shall come into effect from the date of acceptance and shall be one year.

During the warranty period, if the equipment malfunctions due to non-human operation, the seller shall be responsible for free repair or replacement of parts.

Outside the warranty period, maintenance work on the equipment will incur a cost fee for the replacement parts and a certain service fee.

15. Daily maintenance and upkeep of equipment

notes

15.1. Execution standards

Regularly clean the dust from the condenser and compressor to prevent dust from affecting the cooling effect of the condenser.

2. Check the compressed air pressure before starting up

name

brand

specifications(W*H*D)

origin

quantity

notes

AStructural part

box

PW

Integral

China

1type

air handling unit

PW

stainless steel

China

1type

Unit and control box

PW

Cold rolled steel plate baked paint

China

1group

Double door

PW

Color board

China

1type

Circulating motor

Yutian

1HP

China

3group

BRefrigeration section

compressor

Hitachi

vortex

Guangzhou

2tower

Japanese sole proprietorship

plate heat exchanger

Yuanzhuo

Supporting facilities

China

1type

condenser

Yongqiang

Water-cooled shell and tube type

Taiwan

1group

evaporator

Zhongli

3/8Fin type

Taiwan

1group

oil separator

Emerson

AWseries

Mexico

2type

dryer

danfoss

DML

Denmark

4group

solenoid valve

Sporlan

SEV/EVR

Europe

4type

expansion valve

danfoss

TES

Denmark

6type

Evaporator Pressure Regulator

danfoss

KVP

Denmark

1cover

Refrigerant and consumables

DuPont

R404A R23

America

2type

CControl part

controller

PW-M1TETS

PW1000

China

1tower

phase sequence relay

CHIN

China

1individual

switch power supply

Mingwei

DC24V2.1A

Taiwan

1type

sensor

OMi Qie

T

Switzerland

1type

power switch

DELIXI

3P 100A

China

1type

Contactor

literati

SP25

France

6type

Heating pipe

Longxing

Finned nickel chromium alloy

Taiwan

6branch

Solid state relay

Xinling

SSR

China

3group

cable

Golden Dragon Feather

0.75~12square

China

1cover