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This sectionManufacturer of cold and hot temperature impact test chamberSatisfying GB/T2423.5 (Environmental testing for electrical and electronic products - Temperature shock test method), this equipment is mainly used for simulationtemperature jumpInstantly transitioning from high temperature to low temperature, and then from low temperature to high temperature, cyclingRepeated temperature fluctuationsTo provide a basis for assessing the performance changes of test samples. And we are professionalsManufacturer of cold and hot temperature impact test chamberThe product has a high-quality appearance, simple and elegant, and excellent materials.

1、 Main technical indicators

1.1 Temperature range: High temperature chamber: Room temperature+10 ℃~200 ℃; (Adjustable)

Low temperature box: Room temperature~-60 ℃ (adjustable)

1.2 Temperature fluctuation: ≤± 0.5 ℃;

1.3 Temperature uniformity: ≤± 1.5 ℃;

1.4 Heating rate: from room temperature (R.T) to 200 ℃ ≤ 60 minutes;

1.5 Cooling rate: from room temperature (R.T) to -60 ℃ ≤ 60 minutes;

1.6 Pre cooling lower limit temperature: ≤ -60 ℃;

1.7 Product impact temperature:+150 ℃ to -40 ℃ (pre cooling lower limit temperature: ≤ -60 ℃)

1.8 Test bench load: ≤ 5Kg(static state);

1.9 Studio size: 500 × 600 × 500mm; (depth × width × height)

Dimensions: Approximately 1800 × 1500 × 2100mm; (subject to actual manufacturing)

1.10 Power supply: 380V ± 10% 50Hz ± 1Hz

1.11 Total power: approximately 22Kw (12Kw for low-temperature chamber and 10KW for high-temperature chamber)

1.12 Temperature recovery time: ≤ 5 minutes;

1.13 Temperature conversion time: ≤ 5-10 seconds

1.14 Conversion times: ≤ 999 times

2、 Refrigeration system

1. This modelCold and hot temperature shock test chamberRefrigeration system and compressor

In order to ensure the cooling rate and low temperature requirements of the test chamber, a set ofImported from Germany”Bizelle "A binary stacked air-cooled refrigeration system composed of a semi enclosed compressor or equivalent.cascade refrigerationThe system includes aHigh temperature refrigeration cycleAnd oneLow temperature refrigeration cycleThe connecting container is an evaporative condenser, which plays a role in energy transfer by transferring the thermal energy inside the working chamber through a two-stage refrigeration system, achieving the purpose of cooling. The design of refrigeration systems applies energy regulation technology, which is an effective processing method that can ensure the normal operation of refrigeration units while effectively adjusting the energy consumption and cooling capacity of the refrigeration system, reducing the operating costs and failure rates of the refrigeration system to a relatively low leveleconomyThe state.

2. Working principle of refrigeration

Both high and low refrigeration cycles useReverse card loopThis cycle consists of two isothermal processes and two adiabatic processes.

The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work to increase the exhaust temperature. Then, the refrigerant passes through the condenser and undergoes isothermal compression with the surrounding mediumheat exchangeTransfer heat to the surrounding medium. After the refrigerant undergoes adiabatic expansion through the valve, the temperature of the refrigerant decreases. The refrigerant absorbs heat from objects with higher temperatures through the evaporator, causing the temperature of the cooled object to decrease. This cycle repeats itself to achieve the goal of cooling down.

3. Cooling method

The air-cooled evaporative condenser adoptsImported high-quality productsPlate heat exchanger with high heat transfer coefficient. Thus, the heat exchange efficiency can be greatly improved. Environmentally friendly refrigerants: R404A (high-temperature cycle) and R23 (low-temperature cycle) are used;

4. Refrigeration auxiliary components

Electromagnetic valve; filter; Pressure controller; Globe valve; Oil pressure controller; Shock absorber hose; Oil separators and other refrigeration components are all usedImportItem.

3、 Air conditioning system

3.1 Air conditioning method

Forced ventilation insideBalanced temperature regulation method(BTC)This method refers to the control system controlling the output of the heater based on the set temperature point through PID automatic calculation output under continuous operation of the refrigeration system, ultimately achieving a dynamic balance.

3.2 Air circulation device

Built in high and low temperature air conditioning room, connected to the sample chamber by a damper, and effectively ventilated through an efficient ventilation fanheat exchangeImprove the air flow and heat exchange capacity of the heater and evaporator. By improving the airflow of the air, the performance of the test chamber has been significantly enhancedtemperature uniformityTo achieve the purpose of temperature change.

3.3 Add heat square type

High qualitynichrome wireElectric heater

3.4 Air cooling method

Multi stage membrane typeair-to-air heat exchanger

4Box Structure

Cold and hot temperature shock test chamberAdopting a three box structure, the upper rear box isHigh temperature thermal storage boxThe upper box at the front is the test box, and the lower box at the front is the low-temperature storage box. The test sample is pre-set inside the test box. When conducting high and low temperature and impact tests, the pneumatic door of the high-temperature storage box or low-temperature storage box is used toautomaticSwitch to alternately expose the test sample to high and low temperature airPlace the sample in the sample chamber and let it stand still.

4.1 Outer wall material of the box body

The outer surface is made of high-quality materialsCarbon Steel PlateMade by electrostatic spraying.

4.2 Material of the inner wall of the box

ImportSUS304 high-quality stainless steel

4.4 Thermal insulation material

The insulation material used in the high-temperature chamber isSuperfine glass woolThe insulation material used in the low-temperature chamber isPolyurethane foamThe shell is connected to the low-temperature chamber as a whole through high-temperature and high-pressure foaming.

4.5converter

Electric(Or pneumatic)Wind door actuator.

4.6 Load bearing capacity of the test bench

Not greater than5KG

4.7 Sample Method

Sample standing still

5、 Measurement and Control System

• Temperature measurement: Pt100 platinum resistor,responsive、High precision

• Control device: The main controller adopts a high-quality Japanese easy to control LCD display human-machine interface touch screen temperature controller. This controller adoptsLCD display screenIt can display set parameters, test curves, running time, and heater working status, PIDParameter self-tuningFixed function.The development of control programs adoptsMan-machine conversationThe method only requires setting the temperature to achieve automatic operation of the refrigeration machine (opening and closing of the air door, switching between high and low temperatures). The control system has a completeDetecting deviceCan automatically display detailed faults and alarms For detailed introduction, please refer to the control instructions

• Setting accuracy: Temperature: 0.1 ℃

• User program capacity: 10 groups x 10 segments.

• Operation mode: Constant operation.

• Recording device: using a dot curve recorder to synchronously track and record.

• independenceOvertemperature protection instrument.

• Equipment working hoursAccumulated timer.

6、 Security protection measures

• Studio independent overheating;

• Refrigeration machine overpressure; Overload; Oil pressure;

• Heater short circuit, overload;

• The blower motor is overloaded.

• System leakage protection

• Power supply, phase sequence, overvoltage, undervoltage, phase loss protection

7、 Equipment usage conditions

7.1 Environmental temperature

5―35℃； Environmental humidity: ≤85%R.H； No condensation

7.2 Cooling water flow rate

10Ton/h, water pressure not less than 0.2Mpa,Inlet water temperature: ≤ 25 ℃ (user provided cooling tower)

7.3 Atmospheric pressure

80KPa～106 KPa

7.4 No strong vibrations around

No direct sunlight exposure or direct radiation from other cold and heat sources

7.5 No strong airflow around

When the surrounding air needs to be forced to flow, the airflow should not be directly blown onto the box

8After sales service and training

(1) Purpose: To fully meet customer needs and achieve customer satisfaction.

(2) Responsibilities: Our company is responsible for providing customers with equipment spare parts, technical consulting services, and other related services. Responsible for arranging and organizing technical training for customers.

(3) Training: According to the contract requirements, on-site technical training shall be conducted when installing and debugging equipment for users and putting it into use.

(4) After sales service

a. Provide users with the necessary usage and maintenance consultation;

b. Timely provide vulnerable parts and spare parts to users;

c. Dispatch technical personnel to provide on-site guidance to users on the use and maintenance of their equipment;

From the date of acceptance, during the one-year quality assurance period of the equipment, if the purchaser is unable to operate normally due to manufacturing quality issues with the test chamber while complying with storage, use, and installation rules, the supplier will dispatch maintenance personnel for free repair within 48 hours after receiving notification. Maintenance time limits can also be negotiated and formulated according to the specific situation and the requirements of the demander;

• When there are problems with the equipment after the warranty period, the supplier should promptly provide solutions and charge maintenance and material fees as appropriate.

9、 Equipped with technical documentation

Technical data: Product certificate, user manual, and maintenance

10、 Packaging and transportation methods

(1)Transportation mode: road transportation;

11、 Acceptance criteria and methods

Acceptance criteria: signed by both parties“Technical Agreement”Or relevant national standards;Acceptance method: Formal acceptance shall be conducted on the site of the purchaser.GB/T2423.5 Environmental testing for electrical and electronic products - Temperature shock testGJB150.5 temperature shock test