HFH Ultra-low Resistance Air Return Equipment for Medical Purpose

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E-mail: sales@yantairfilters.com

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Detailed Description

HFH ultra-low resistance return air device,in line with the requirements of the GB51039-2014 general hospital building design code,is mainly used in the hospital's central air conditioning system,consultation room,treatment room,drug treatment room,dressing change examination room,rescue room,decontamination preparation room,dialysis room and even ICU and other places of the fan coil air return.Can be a good solution to the use of fan coil air purification problems.Clean the indoor air,avoid the occurrence of patient infection,and improve the working environment of medical staff.

Structure Diagram of HFH-A Air Return Device without Flange Interface

The box body of the return air device is made of cold-rolled steel plate spraying, and the return air louver is made of aluminum profile spraying.

Structure Diagram of HFH-B Flanged Interface Return Air Device

The box body of the return air device is made of cold-rolled steel plate spraying, and the return air louver is made of aluminum profile spraying.

Features：

◆ Low resistance

In the HFH air return port, ultra-low resistance filter material is selected and made CDZ filter. CDZ filter selection of the best process, so that

The filter and return air device have the lowest resistance.

Wind speed m/s	0.4	0.6	0.8	1.0	1.2	1.4
Resistance Pa	8	12	16	20	24	29

◆ High efficiency

CDZ filter has high filtration efficiency, primary filtration efficiency ≥ 90%, gravimetric efficiency ≥ 97%, and initial filtration efficiency for 0.5μm particles ≥ 85% 。

Particle size μm	0.5	1.0	3.0	5.0
Efficiency%	87	93	98	99

◆ High energy saving

The energy saving effect is obvious, and the energy saving of the system is more than 30%.

◆ Long service life

The filter paper folding structure is selected to increase the filter area and prolong the life of the filter. Service life is not low under conventional conditions in 6 months.

◆ Easy replacement and maintenance

After the filter has reached the final resistance, simply replace the filter. The replacement only needs to remove the filter, and the new filter is fixed with a pressing block Can.

Material description of CDZ filter in HFH return air unit:

Filter material:chemical fiber

Outer frame:galvanized steel sheet

Gasket:EPDM optional

Sealant:hot melt adhesive

Model of medical fan coil corresponding to HFH return air device

Fan coil code	High-grade air volume m³/h	Size of coil return air outlet mm	Model of HFH return air unit	Size of built-in filter mm	Section wind speed m/s	Resistance Pa	Outer diameter of box mm	Total height A/B mm	Return air louver outer diameter mm	Recommended ceiling opening size mm	Lug size mm
E-3	450	600 × 400	HFH-A(B)1	630 × 430 × 70	0.46	10	685 × 485	190/240	735 × 535	700 × 500	635 × 485
E-4	600	600 × 400	HFH-A(B)1	630 × 430 × 70	0.62	12	685 × 485	190/240	735 × 535	700 × 500	635 × 485
E-6	800	600 × 400	HFH-A(B)1	630 × 430 × 70	0.82	16	685 × 485	190/240	735 × 535	700 × 500	635 × 485
E-8	1100	800 × 400	HFH-A(B)2	830 × 430 × 70	0.86	17	885 × 485	190/240	935 × 535	900 × 500	835 × 485
E-10	1550	800 × 400	HFH-A(B)2	830 × 430 × 70	1.21	24	885 × 485	190/240	935 × 535	900 × 500	835 × 485
E-12	2100	1200 × 400	HFH-A(B)3	1230 × 430 × 70	1.10	22	1285 × 485	190/240	1335 × 535	1300 × 500	1235 × 485