GB 29410-2012Domestic dimethyl ether gas cooking appliances (English PDF)

4.1 Classification

4.1.1 divided by the number stove eye. monocular lesions, eye lesions, eye lesions and more.

4.1.2 The form of the structure is divided into. desktop, embedded.

4.2 Model - - - - Household stoves (JZ) DME gas (M) Custom number Example. 968 home dimethyl ether gas stove is expressed as. "JZM-968".

5.1 The basic design parameters

5.1.1 rated gas pressure gas stoves should be 2.0kPa.

5.1.2 gas stove AC power, single phase should not exceed the rated voltage of 250V.

5.1.3 In the highlands use gas stoves, the impact of altitude on actual heat load should be considered.

5.2.1 General requirements

5.2.1.1 gas stove parts should be safe, durable, damage and deformation occurs not affect the use in normal operation.

5.2.1.2 gas stove should be sufficient stability during normal use, should not have sliding and dumping phenomenon.

5.2.1.3 gas stove should be overturned overall configuration inclined 15 ° in any direction, parts should not fall.

5.2.1.4 packaging structure and a gas stove should be able to withstand the stacking storage and transportation, falling and vibrations.

5.2.1.5 gas stove structure asbestos timber should not be used.

5.2.1.6 eye lesions and eye lesions multi-burner stoves pot-shaped center distance should be sized.

5.2.1.7 binocular eye lesions and multiple lesions and eye lesions should have a tip end of the pot holder applied to at least, should take pot stable in normal operation, might Hinder use.

5.2.1.8 gas stove should be provided for each burner flame failure protection devices.

5.2.1.9 gas stove burners should be set not less than two independent gas valve, shown in Figure 1, FIG. Description. 1

--- gas inlet; A valve 2

--- main burner. NOTE. Valve A and valve B are two independent functions. 1 a schematic view of a gas passage in series in FIG. Description. 1

--- gas inlet; 2

--- A main burner; 4

--- B main burner; 5

5.2.2 Structure Parts

5.2.2.1 when using and cleaning hands may touch parts has an end portion should be smooth.

5.2.2.2 gas stove connected parts should use standard fasteners, should be solid and reliable connection for easy removal.

5.2.2.3 parts cleaning, overhaul, using common tools should be easily removable.

a) should be easy to observe the state of combustion;

b) staking portion and connection portion should not affect the use of other defects;

c) fire hole machining accuracy, the influence of defects in the combustion or should not be modified;

d) casting defects should not affect the appearance and use;

e) from the head as two or more burners, the position of each other should be accurate; The mutual positions of the other related components

f) and the nozzle, an electrical ignition device, security device, etc. should be accurate, should not be moved during use or Off;

g) a flame should not overheat or damage to independent portion;

h) should be easy to clean and detachably;

i) the nozzle orifice outlet to the burner fire, the material used for all components, press tempering resistance test burner, the burner should not affect Deformation properties;

j) the nozzle should be easily removed using a general tool, mounted;

k) provided in the nozzle should be easily clogged foreign matter outside the dust position or easily be blocked, easy cleaning of the nozzle.

5.2.3 AC power for the ignition device of the gas stove structure

5.2.3.1 gas stove housing should be designed to use the tools necessary to open the structure and make it sufficient to accidental contact with live parts Protection.

5.2.3.2 power cord should be connected to a Y-gas stove.

5.2.3.3 power cord should meet the requirements GB/T 5023.3 or GB/T 5013.4 is.

5.2.3.4 clamping means of earthing terminals shall be adequately secured to prevent accidental loosening. If the cord from slipping out of the fixing device, the carrier should lead Be tightened before the grounding wire. A ground terminal and a ground terminal of the power cord plug

5.2.3.5 interior of the gas stove should be permanent signs.

5.2.3.6 direct AC power ignition device should be clearly permanent identification.

5.3.1 General Requirements material

5.3.1.1 should be able to withstand temperatures of normal use.

5.3.1.2 DME contacting material should be compatible with properties of DME.

5.3.1.3 metal member (except corrosion-resistant material) should plating, paint, enamel, or other suitable corrosion protection surface treatment.

5.3.1.4 material should be consistent with existing national standards. After the test material, shall meet the following requirements.

a) heat resistance. should not affect the use of the deformation;

b) Corrosion Resistance. The surface should be free from corrosion, the coating should be free of bubbles and the film, peeling and rusting;

c) steel ball impact resistance properties of enamel. enamel without shedding phenomenon;

d) Oil resistance. no deformation, does not affect.

5.3.2 Sealing material

5.3.2.1 rate of mass change after use for packing washers, gaskets, etc., the resistance test DME performance should be between ± 10%, but not Should soften the impact and embrittlement use.

5.3.2.2 rate of mass change after cock Lubricants resistance test was DME performance, at 20 °C when less than 10%, should be at 4 °C Less than 25%.

5.3.3 Burner

5.3.3.1 burner flame hole area should be greater than a melting point of 700 °C material.

5.3.3.2 wall thickness and surface treatment should meet the following requirements. Wall thickness

a) of the cast product of not less than 3mm, it should not have obvious casting defects such as porosity; Wall thickness

b) die cast product of not less than 1.5mm, should not affect the use of the defect;

c) a wall thickness of not less than

0.3 mm stainless steel products;

d) hot dip aluminizing steel products wall thickness of not less than

0.3 mm;

e) ordinary steel products, steel wall thickness not less than 0.5mm, and the surface for anti-corrosion treatment. At the enamel surface When Li, ball impact test should be done, there should be no enamel off;

f) the thickness of copper and copper alloy products should never be less than 1mm.

5.3.3.3 nozzle material deg.] C melting point greater than 500 should be used.

5.3.3.4 nozzle holder than 350 °C melting point materials should be used.

5.3.4 conductive material Use of conductive material copper, copper alloy or an equivalent or electrical properties, thermal stability material, mechanically stable properties, wherein the means for The need for flexibility in the location and other member materials, when not so limited risk does not occur.

5.3.5 Gas pipe Gas m.p. than 350 °C catheter material should be used.

5.4 Performance

5.4.1 airtightness Tightness of gas stoves should meet the following requirements.

a) from the gas inlet to the gas valve at a pressure of 4.2kPa, leakage of not more than 0.07L/h;

b) the automatic control valve in the pressure 4.2kPa, leakage of not more than 0.55L/h;

c) igniting the burner at

1.5 times the rated pressure, the fire-hole burner gas from the gas inlet to no leakage.

5.4.2 heat load The thermal load of the gas stove should meet the following requirements.

a) each burner heat load variation and conversion Found nominal heat should be within ± 10%;

b) The conversion Found single burner heat load Found conversion ratio of the sum of the thermal load of not less than 85%;

c) two above and two should be a main fire gas stove, the thermal load is actually measured conversion of not less than 3.5kW.

5.4.3 combustion conditions Gas stove combustion conditions should meet the requirements of Table 1. Table

1 Requirements combustion conditions No. Item Requirements 4s ignition flame in the transmission 1, no deflagration No 2 from the flame from the flame

6.1.1 Laboratory conditions According to the provisions in

6.1 of GB 16410-2007.

6.1.2 Test System

6.1.2.1 During the test, air pressure fluctuations should be less than 10Pa.

6.1.2.2 stopped when the gas stove, or the static pressure should be less than

1.25 times the gas supply pressure is equal to the runtime.

6.1.3 The test gas

6.1.3.1 Gas test species Various combustion test conditions should be used with gas GB 25035 meet the requirements of dimethyl ether gas, code-named "M".

6.1.3.2 test gas supply pressure Table

5 Test with the gas supply pressure. Table 5 test gas supply pressure is measured in pascal Code test gas pressure 1 (maximum test pressure) 3000 2 (rated gas pressure) 2000 3 (minimum test pressure) 1000

6.1.3.3 test gas condition code Test conditions for gas code represented by. Test code Type of gas - the gas supply pressure test code. Example. M-2 represents a gas DME - rated gas pressure.

6.1.4 The main test instrument Test instrument as specified in Table 6, the correction performed prior to the test instrument to deal with. Table

6 Main test instrumentation use (Pilot projects) Instrument name specification Accuracy or smallest scale range Room temperature measurement and gas thermometer 0 °C ~ 50 °C gas temperature of

0.5 deg.] C; rt 1 °C Atmospheric pressure gauge for measuring pressure 81kPa ~ 107kPa 0.1kPa Gas pressure measuring gauge 0Pa ~ 5000Pa 10Pa Time measuring stopwatch - 0.1s Determination of the dry gas flow gas flow - 0.1L Determination of the gas leak tightness test - - Noise measuring sound level 40dB ~ 120dB 1dB Gas chromatography assay components - - Determination of Carbon Monoxide CO tester 0 0.001% to 0.2% Determination of carbon dioxide tester 0 to 15% 0.01% Oxygen content sensing oxygen tester 0 to 21% 0.01% Temperature thermometer 0 °C ~ 100 °C 0.2 °C Measuring the surface temperature of the thermometer, a thermocouple 0 °C ~ 300 °C 2 °C Quality measuring instrument 0kg ~ 15kg 5g Leakage current measurement Ammeter, voltmeter, leakage current measurement Tester - - Electrical strength measuring electrical strength tester - - Grounding resistance meter measuring earth resistance - -

6.1.5 Test Equipment Test equipment to perform as specified in Table 7. Table

7 Test Equipment use (Pilot projects) Note the name of the type of test equipment Determining the thermal load of gas consumption measuring means Gas regulator, the dry gas flow meter, hygrometer, Thermometer, pressure gauge, measured with a three-way pressure Gas passage tightness test gas leak tightness testing device, the test fire burner - Durability Test Gas valve Endurance Test - - Ignition control means Endurance Test - - Safety Devices Endurance Test - - Solenoid valve means durability test - - Heat resistance test temperature structural components of the apparatus room thermostat ~ 750 °C Vibration test Vibration test Vibration test stand apparatus Vibration frequency of 10Hz, the whole vibration 5mm web down, left and right

6.1.6 gas stove test status Gas stove should be required to install and test the state of use, in addition to the various tests specified in the individual performance, it should meet the following basic Claim.

a) the amount of air required for burner, at rated pressure should be adjusted to the optimum state of the combustion flame, and then the damper is fixed, the Should not be transferred when the shutter performance test;

b) gas stove according to Table

8 Selected aluminum pan (lower limit pan) and heating water. Table 8 test gas stove pan and heated water Found thermal load / kW Pot size/mm Diameter pan pot wall thickness radius height Water heating/kg 1.40 180 0.6 ± 0.1 1.72 200 0.65 ± 0.1 2.08 220 0.65 ± ...