1. Technical Solution
| Project Name | Custom Hot Air Circulation Oven (DS-LH135) |
| Reference Number | 20200518032 |
| Date | 2020/5/18 |
| Approved | Mr He |
| Drafted | Mr Li |
| Commercial | Zhang Yu |
| Telephone: | 13671719019 |
| I. Equipment Purpose and Compliance Standards | ||
| Complies with equipment manufacturing standards | Conforms to the following standards for electric hot-air forced-air drying ovens: GB/T 30435-2013 standard, GB 5959.4-92 safety standard, GB/T 20033-2011 hot-air circulation oven standard |
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| 2. Product Application | Suitable for conducting heat resistance, moisture resistance, dryness resistance, high/low temperature adaptability testing, low-temperature constant-temperature maintenance, and storage for electronic and electrical products, surface treatments, instruments, plastics, metallurgy, etc. Particularly suitable for high/low temperature adaptability testing of optical fibres, crystals, precision inductors, surface-treated products, PCBs, LCDs, etc. Also serves as a reliability testing device for quality control engineering. It is also suitable for quality supervision bureaus, research institutions, and universities to evaluate product performance and quality. | |
| 3. Prohibited Substances | The following substances are strictly prohibited for testing: flammable, explosive, highly corrosive, or strongly radioactive materials. | |
| II. Equipment Specifications | ||
| 1. Equipment Name | Customised Hot Air Circulation High-Temperature Oven | |
| 1. Equipment Model | DS-5800H | |
| 2. Primary Technical Parameters | ||
| Custom Hot Air Circulation Oven | ||
| 2.1 Internal Chamber Dimensions | 2200 × 1200 × 2200 mm (Width × Depth × Height) | |
| 2.2 External Dimensions | 3000 × 1400 × 2900 mm (Including Fan Motor) | |
| 2.3 Temperature Range | RT+20 to 180°C | |
| 2.4 Controller | LCD Touchscreen Controller | |
| 2.5 Operating Modes | 1 Timed operation 2 Constant value operation 3 Programmed operation | |
| 2.4 Continuous Operating Temperature | 160°C | |
| 2.5 Temperature Fluctuation | ±1°C | |
| 2.6 Temperature Uniformity | ±2.5% of set point | |
| 2.7 Heating Rate | ≥3°C/min (average) | |
| 2.8 Temperature Resolution | 0.1°C | |
| 2.9 Temperature Uniformity | 100°C: s + 2°C | |
| 2.10 Volume | 5.8m³ | |
| 2.11 Goods Transfer Ramp | 2200x1000mm | |
| 2.12 Internal Chamber Load Capacity | 1.5 tonnes | |
| 2.13 Power Supply (approx.) | 380V/50Hz | |
| 2.14 Total Power Consumption | Approx. 25kW | |
| 3. Equipment Structure and Materials | ||
| 3.1 Enclosure Structural Materials | Structure | Internal structural reinforcement comprises an angle steel frame, with components layered from outer to inner: enclosure shell – thermal insulation rock wool – frame – air duct – inner chamber – sample rack. The control system is housed in an externally mounted control cabinet on the right side of the unit, while the fan motor is positioned on the right flank for axial airflow generation. |
| Outer casing material | The enclosure shell features a brushed finish in 304 stainless steel. | |
| Inner liner material | Constructed from premium SUS304 mirror-finished stainless steel plate. | |
| Door lock | Features snap-lock door fastenings for ease of use. | |
| Insulation layer | Insulated with 5052 aluminium oxide fire-retardant wool. | |
| Castors | Fitted with four Fuma castors (single load capacity: 1000kg). | |
| Door | Double-door configuration without viewing window, incorporating ergonomic snap-lock mechanisms. Door frames employ multi-seal construction with specialised high/low-temperature resistant silicone rubber gaskets. | |
| 3.2 Control System | Controller | Inch colour touchscreen |
| Interface Display Information | Current operating temperature, set temperature, operating time, number of operating segments (if set) and other information | |
| Setpoint Operation | Long-term operation after setting temperature | |
| Scheduled Execution | Set the temperature and the duration of operation once the set temperature is reached. The device will cease operation upon completion of the set duration. | |
| Program Execution | Set Temperature 1, Set Duration 1, Set Temperature 2, Set Duration 2. Up to 15 temperature and duration segments may be programmed. After completing the programming, the equipment will operate sequentially according to the preset temperatures and durations. Following the completion of each operational segment, the device will automatically halt. | |
| 3.3 Air Distribution and Circulation System | Fan | 2 high-temperature resistant fan motors + high-temperature resistant alloy turbine fan, achieving forced convective diffusion circulation |
| Fan drive | Axial flow | |
| Duct circulation | Parallel duct design with hot air moving from right to left. Baffles installed within the duct ensure both air pressure and velocity meet testing standards, whilst enabling rapid temperature stabilisation upon door opening/closing. | |
| Test port | Diameter 50mm, 1 on the left side | |
| 3.4 Heating System | ① | The heating system employs a hot-air circulation heating method, ensuring uniform temperature distribution and reliable temperature control. |
| ② | Both temperature control and power output are calculated by a microcomputer, which automatically adjusts heating power according to internal load levels. This achieves high precision and energy efficiency, resulting in greater environmental sustainability and energy savings. | |
| ③ | Primary system components: heating tubes, solid-state relays, etc. | |
| 4. Fault Alarm System | ||
| Equipment Safety Protection | 1. Independent temperature limiter with automatic heating cut-off upon overheating, providing effective sample protection. 2. Emergency stop button to instantly cut the main power supply in critical situations. 3. Tri-colour indicator lights monitor temperature overshoot and fan motor operation. Any anomaly triggers audible and visual alarms. 4. Earth leakage circuit breaker. 5. Phase failure protection device. |
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| 5. Introduction to Selected Electrical Components | ||
| Instrumentation | LCD integrated module instrumentation displays multiple sets of data on a single screen with stable and accurate signal transmission. The instrument features PID logic operation, self-tuning functionality, and manual parameter intervention capabilities. | |
| Solid-state relay | Utilises high-quality solid-state relays | |
| Temperature sensor | Employs PT100 sensors | |
| 6. Technical Documentation Provided | ||
| Documents | Equipment user manual, warranty card, certificate of conformity, electrical schematic diagram | |
| 7. Optional Accessories (Optional) | ||
| Data Storage | USB storage, spreadsheet data storage (500 yuan) | |
| Printer | Thermal paper printing, adjustable print interval time (1500 yuan) | |
| Inert Gas Injection Port | Internal U-shaped distribution, aperture 16mm (outer diameter) (2000 yuan) | |
| Gas Flow Meter | Control gas channel to regulate gas flow rate (25000 yuan) | |
| III. Equipment Environment Installation Requirements | ||
| Equipment Installation Requirements | Ambient temperature and humidity: 5°C to +30°C, relative humidity: <85% | |
| No intense vibrations in the vicinity | ||
| No direct sunlight or other direct heat sources | ||
| No strong electromagnetic fields in the vicinity | ||
| No high concentrations of dust or corrosive substances in the vicinity | ||
| The room must be well ventilated. | ||
| No strong air currents in the vicinity; if forced airflow is required, it must not be directed at the unit. | ||
| The equipment must be placed on a firm, level surface and maintained in a horizontal position. | ||
| A clearance of at least 50cm must be maintained between the rear of the equipment and the wall, with at least 50cm clearance on both sides. | ||
| IV. Acceptance and Warranty | ||
| Parameters | The above data were measured during operation under no-load conditions. | |
| Acceptance | Acceptance testing shall be completed within one week of the equipment arriving at the buyer's designated delivery address. | |
| Warranty | The warranty period shall be 12 months following completion of acceptance. Beyond this warranty period, reasonable charges shall apply for replacement parts. | |
| V. Production Lead Time and Transportation Method | ||
| Production Lead Time | Delivery within 30 working days from the date the advance payment is credited to the supplier's account. | |
| Transportation Method | Road transport; shipping containers meeting the requirements of QB/WD008-2001. Delivery location: Customer-designated point (excluding upstairs delivery). Unloading to be undertaken by the buyer. | |
