Shandong Gold Fly Heat Exchange Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of walkin cooler unit in China. With abundant experience, we warmly welcome you to wholesale bulk advanced walkin cooler unit for sale here from our factory. Customized orders are welcome.
Working principle of air curtain cabinet walkin cooler unit
The working principle of the air curtain cabinet refrigeration unit mainly includes the following steps:
1. Refrigerant circulation: The air curtain cabinet is filled with refrigerant with a very low boiling point inside. In low-pressure environments, refrigerant evaporates into gas, which absorbs a large amount of heat and lowers the temperature inside the cabinet. The evaporated refrigerant gas is sucked in and compressed by the compressor, causing its temperature and pressure to increase. Subsequently, the high-temperature and high-pressure refrigerant gas enters the condenser and exchanges heat with the outside air through the heat sink, releasing heat to the external environment while condensing into liquid. The condensed refrigerant liquid enters the evaporator through a throttling device (such as an expansion valve) and begins the process of evaporating and absorbing heat again, forming a complete refrigerant circulation system
2. Formation of air barrier: An electric fan is usually installed at the opening of the air curtain cabinet. The airflow blown out by the electric fan forms an air barrier, effectively isolating the exchange of indoor and outdoor airflow, preventing hot air from entering the cabinet and affecting the cooling effect. In addition, the heater can heat the air barrier when necessary, further improving its insulation effect
3. Uniform distribution of air conditioning: The air curtain cabinet adopts the method of blowing air from the back, so that the air conditioning is evenly covered in all corners of the air curtain cabinet, thereby achieving the effect of product preservation. This design ensures uniform cooling and effectively maintains stable temperature inside the cabinet
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Condensing Unit Model |
GF-HS10EL |
GF-HS15EL |
GF-HS20EL |
GF-HS25EL |
GF-HS30EL |
GF-HS20FL |
GF-HS30FL |
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Rated Power(W) |
800 |
1120 |
1980 |
2350 |
2680 |
1980 |
2680 |
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Power Capacity (HP) |
1HP |
1.5HP |
2HP |
2.5HP |
3HP |
2HP |
3HP |
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Power Supply |
220V/50Hz |
380V/50Hz |
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Refrigerant (Max/kg) |
R404A(1.2) |
R404A(1.4) |
R404A(3.0) |
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Start-up Current (A) |
25 |
37 |
50 |
50 |
60 |
27 |
27 |
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Maximum Working Current(A) |
4.3 |
6.5 |
8.6 |
9.5 |
12.7 |
3.2 |
4.7 |
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Evaporating Temp Range(°C) |
-45〜-5 |
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Ambient Temp Range(°C) |
-7〜43 |
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Compressor Model |
C-RHN75E4A |
C-RHN110E4A |
C-3RH322L4AAL |
C-3RH322L4AAL |
C-3RH463L4AAL |
C-RHN153L8A |
C-RHN223L8A |
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Pressure Controller |
P830HM |
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Accumulator Volume (L) |
0.8 |
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Gas-liquid Separator Volume (L) |
0.65 |
1.2 |
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Condenser |
Spec (R*R*L mm) |
4*4.5*540 |
5*4.5*630 |
5*4.5*900 |
5*4.5*995 |
6*4.5*1060 |
5*4.5*900 |
6*4.5*1060 |
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Fan Motor |
Motor Output Power/Qty(W) |
16*2 |
16*2 |
16*3 |
16*3 |
16*3 |
16*3 |
16*3 |
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Fan Diameter (mm) |
Φ230*2 |
Φ230*2 |
Φ230*3 |
Φ230*3 |
Φ230*3 |
Φ230*3 |
Φ230*3 |
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Air volume(m³/hr) |
820*2 |
820*2 |
820*3 |
820*3 |
820*3 |
820*3 |
820*3 |
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Pipe |
Suction OD |
12.7(1/2'') |
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Liquid Outlet OD |
9.53(3/8'') |
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External |
L ± 2 |
680 |
790 |
1050 |
1145 |
1210 |
1050 |
1210 |
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W ± 2 |
485 |
485 |
540 |
540 |
570 |
540 |
570 |
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H ± 4 |
261 |
261 |
263 |
263 |
263 |
263 |
263 |
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Pitch of holes Φ9--L*W(mm*mm) |
660*465 |
770*465 |
1030*520 |
1125*520 |
1190*550 |
1030*520 |
1190*550 |
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Cooling |
Evap Temp (°C) |
Ambient Temperature 32°C |
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-40 |
505 |
840 |
1260 |
1425 |
1620 |
1260 |
1620 |
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-35 |
655 |
1090 |
1580 |
1790 |
2080 |
1580 |
2080 |
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-30 |
810 |
1190 |
1890 |
2140 |
2630 |
1890 |
2630 |
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-25 |
975 |
1545 |
2310 |
2615 |
3320 |
2310 |
3320 |
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-20 |
1190 |
1865 |
2730 |
3090 |
3955 |
2730 |
3955 |
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-15 |
1430 |
2100 |
3095 |
3505 |
4540 |
3095 |
4540 |
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-10 |
1795 |
2426 |
3680 |
4170 |
5485 |
3680 |
5485 |
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-5 |
2135 |
2790 |
4100 |
4645 |
6485 |
4100 |
6485 |
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Wiring |
Leakage |
Rated current(A) |
10 |
15 |
25 |
25 |
30 |
10 |
15 |
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Action |
30 |
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Wire Dia |
10m |
2.0 |
2.0 |
4.0 |
4.0 |
5.0 |
2.0 |
2.0 |
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20m |
2.0 |
3.5 |
6.0 |
6.0 |
6.0 |
2.0 |
3.5 |
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30m |
3.5 |
3.5 |
6.0 |
6.0 |
6.0 |
3.5 |
3.5 |
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Code |
Test |
Ambient Temp(°C) |
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Evap Temp |
Test Power Supply |
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① |
Standard |
32.2 |
5 |
-23.3 |
1PH 50Hz 220V/3PH 50HZ 380V |
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② |
Maximum |
43 |
5 |
-23.3 |
1PH 50Hz 220V/3PH 50HZ 380V |
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1. The refrigerant filling amount should be controlled as much as possible, and should not exceed the values in the table at most |
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2. The diameter of the suction pipe and evaporator should be determined after considering the return oil and confirming the gas flow rate again |
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3. When selecting the diameter of the connecting pipeline, special attention should be paid to ensuring that the gas flow velocity reaches 3.8m/s or more in the horizontal pipe and 7.6m/s or more in the vertical pipe |
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4. The length of the single-sided pipe should be below 10 meters, and the height difference should be below 3 meters at this time |
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