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CN-224202595-U - Special equipment for testing ignition temperature of A2L hot surface

CN224202595UCN 224202595 UCN224202595 UCN 224202595UCN-224202595-U

Abstract

The utility model discloses special equipment for testing the ignition temperature of an A2L hot surface, which comprises a test box and a spray pipe arranged in the test box, wherein one end surface of the spray pipe is fixedly connected with a refrigerant tank with a valve, one side of the refrigerant tank is provided with the valve communicated with the inside through the spray pipe, the periphery side of the spray pipe close to one end is provided with a glass drum, the lower end surface of the glass drum is fixedly provided with a metal disc, one side surface of the metal disc is fixedly provided with a thermocouple, the periphery side surface of the metal disc is fixedly connected with a heat insulation pad, and one end of the metal disc extends to one side of the heat insulation pad and is fixedly connected with a heating plate.

Inventors

  • TANG YUNFEI
  • LIU SHUAI
  • LV YE
  • HUANG DANYANG
  • JIANG SHOUHE
  • DU WEI
  • WANG CHONGXING
  • HUANG CONGLIN
  • ZHANG XUE

Assignees

  • 中认英泰检测技术有限公司

Dates

Publication Date
20260505
Application Date
20250521

Claims (7)

  1. The special equipment for testing the ignition temperature of the A2L hot surface comprises a test box (10) and a spray pipe (3) arranged in the test box (10), and is characterized in that one end surface of the spray pipe (3) is fixedly connected with a refrigerant tank (1) with a valve; one side of the refrigerant tank (1) is provided with a valve (2) communicated with the inside of the refrigerant tank through the spray pipe (3); A glass barrel (4) is arranged on the periphery side of one end, close to the spraying pipe (3), of the spraying pipe, a metal disc (5) is fixedly arranged on the surface of the lower end of the glass barrel (4), and a thermocouple (6) is fixedly arranged on the surface of one side of the metal disc (5); the metal disc (5) is fixedly connected with a heat insulation pad (7) on the peripheral side surface, one end of the metal disc (5) extends to one side of the heat insulation pad (7) and is fixedly connected with a heating plate (8), and the heat insulation pad (7) is close to one side surface and is fixedly connected with the heating plate (8).
  2. 2. The A2L hot surface ignition temperature testing apparatus according to claim 1, characterized in that the spacing between the valve (2) and the valve on the refrigerant tank (1) is such that a liquid volume of 1.0m3 ± 0.2m3 can be retained.
  3. 3. The special equipment for testing the ignition temperature of the A2L hot surface according to claim 1, wherein the length of the spray pipe (3) is 250mm plus or minus 5.0mm, the outer diameter of the spray pipe (3) is less than or equal to 4mm, and the inner diameter of the spray pipe (3) is 1.6mm plus or minus 0.1mm.
  4. 4. The A2L hot surface ignition temperature testing apparatus according to claim 1, wherein the glass barrel (4) is 230mm±10mm long, and the glass barrel (4) has an inner diameter of 70mm±10mm.
  5. 5. The A2L hot surface ignition temperature test dedicated apparatus according to claim 1, characterized in that the diameter of the metal disc (5) is 50mm±2.0mm, the thickness of the metal disc (5) is 6±2.0mm, and the surface texture of the metal disc (5) is ISO1302.
  6. 6. The A2L hot surface ignition temperature testing apparatus according to claim 1, characterized in that the insulating pad (7) has a thickness of 6mm.
  7. 7. The special equipment for testing the ignition temperature of the A2L hot surface according to claim 1, wherein an observation window (11) is fixedly arranged on one side surface of the test box (10), and an exhaust port (12) is fixedly arranged on the upper side surface of the test box (10).

Description

Special equipment for testing ignition temperature of A2L hot surface Technical Field The utility model relates to the technical field of special equipment for testing the ignition temperature of an A2L hot surface, in particular to special equipment for testing the ignition temperature of the A2L hot surface. Background The special equipment for testing the ignition temperature of the A2L hot surface is special detection equipment designed for A2L level combustible refrigerants and is used for accurately measuring the ignition temperature of the flammable and explosive refrigerants on the hot surface so as to meet the safety testing requirement of the explosion-proof design of the refrigeration equipment. With the growing development of the global refrigeration industry, traditional refrigerants, represented by freons (CFCs) and Hydrofluorocarbons (HFCs), are exposed to significant environmental risks-ozone depletion potential (ODP > 0.05) and global warming potential (GWP > 2000) have been irreversibly damaging to the atmosphere. According to the requirements of the basic calide amendment of the montreal protocol, hydrocarbon refrigerants (such as R290 and R32) with zero ODP and low GWP (< 10) are industry replacement directions, but all the refrigerants have a common weakness, namely flammability and explosiveness, which puts severe explosion-proof design requirements on refrigeration equipment, and the market lacks equipment special for testing the ignition temperature of the hot surface of an A2L flammable refrigerant. Thus we provide A2L hot surface ignition temperature test specific apparatus. Disclosure of utility model Aiming at the technical problems, the utility model provides special equipment for testing the ignition temperature of the A2L hot surface, and achieves the effects of safety in the testing process and accuracy in the testing result. In view of the above, the utility model provides special equipment for testing the ignition temperature of an A2L hot surface, which comprises a test box and a spray pipe arranged in the test box, wherein one end surface of the spray pipe is fixedly connected with a refrigerant tank with a valve; one side of the refrigerant tank is provided with a valve communicated with the inside of the refrigerant tank through the spray pipe; a glass barrel is arranged on the periphery side of one end, close to the spray pipe, of the spray pipe, a metal disc is fixedly arranged on the surface of the lower end of the glass barrel, and a thermocouple is fixedly arranged on the surface of one side of the metal disc; the metal disc is characterized in that an insulating pad is fixedly connected to the peripheral side surface of the metal disc, one end of the metal disc extends to one side of the insulating pad and is fixedly connected with a heating plate, and the insulating pad is close to one side surface and is fixedly connected with the heating plate. Preferably, the spacing between the valve and the valve on the refrigerant tank is such that a volume of liquid is maintained at 1.0m3 + -0.2 m3. Preferably, the length of the spray pipe is 250mm plus or minus 5.0mm, the outer diameter of the spray pipe is less than or equal to 4mm, and the inner diameter of the spray pipe is 1.6mm plus or minus 0.1mm. Preferably, the length of the glass barrel is 230mm plus or minus 10mm, and the inner diameter of the glass barrel is 70mm plus or minus 10mm. Preferably, the diameter of the metal disc is 50mm plus or minus 2.0mm, the thickness of the metal disc is 6 plus or minus 2.0mm, and the surface texture of the metal disc is ISO1302. Preferably, the thickness of the heat insulation pad is 6mm. Preferably, an observation window is fixedly arranged on one side surface of the test box, and an exhaust port is fixedly arranged on the upper side surface of the test box. Compared with the prior art, the utility model provides special equipment for testing the ignition temperature of the A2L hot surface, which has the following beneficial effects: According to the utility model, the test box is arranged, so that a relatively stable and controllable environment can be provided for the whole test, the test is limited in a specific space, the accurate setting and adjustment of environmental conditions such as temperature, humidity and air flow rate are facilitated, meanwhile, the interference of external environmental factors on a test result can be effectively avoided, the accuracy and reliability of the test are ensured, the air in the box can be uniformly distributed by the internal air circulation system, the consistency of the test environment is ensured, the actual working condition is more accurately simulated, and the safety of the test process and the accurate effect of the test result are achieved. According to the utility model, the refrigerant tank 1 with the valve is arranged for storing the refrigerant, the design with the valve is convenient for controlling the release amount a