CN201107165Y - Multifunctional Air Purification and Disinfection Device Performance Testing System - Google Patents

Abstract

The utility model is a performance detection system of a multifunctional air purification and disinfection device, which includes a wind tunnel structure, a data collection control system and an aerosol generation and collection system, wherein: the wind tunnel structure includes a wind tunnel, the wind tunnel Both the air inlet and the air outlet of the tunnel are provided with electric airtight valves, and the air outlet of the wind tunnel is connected to an exhaust fan. The utility model can satisfy the performance detection of large-span air volume range and air purification and disinfection devices of different sizes and specifications; it can measure the resistance of air purification and disinfection devices, the diameter counting efficiency and weighting efficiency of atmospheric dust and artificial dust, and the efficiency of atmospheric bacteria and artificial bacteria. Multiple performance indicators such as microbial elimination efficiency, removal efficiency of gaseous pollutants such as formaldehyde and toluene, etc. In addition, the utility model can also be used as a performance detection system for "air filter for general ventilation" and "high-efficiency air filter".

Description

Multifunctional Air Purification and Disinfection Device Performance Testing System

technical field

The utility model relates to a performance detection technology of an air purification and disinfection device.

Background technique

In order to strengthen the hygienic management of centralized air-conditioning and ventilation systems in public places, according to laws and regulations such as the "Law of the People's Republic of China on the Prevention and Control of Infectious Diseases" and "Regulations on Sanitation Management in Public Places", the Ministry of Health has formulated the "Health Management Measures for Centralized Air-Conditioning and Ventilation Systems in Public Places" to provide To cooperate with the implementation of the management method, to prevent the spread of airborne diseases in public places, and to ensure the hygienic quality of the conveyed air, the "Hygienic Specifications for Centralized Air Conditioning and Ventilation Systems in Public Places" was formulated. The management methods and corresponding regulations have been effective since March 1, 2006 implementation. The content of its clauses emphasizes the importance of air purification and disinfection devices applied to centralized air conditioning and ventilation systems, and stipulates its performance testing methods, but because the test methods are relatively general, there is no explanation for the principle and process of the required aerodynamic test bench , so that manufacturers have no standard to follow when making product performance test benches, resulting in the lack of standardization and comparability of product data of various manufacturers.

With the improvement of people's living standards, air quality has become one of the major issues that people are increasingly concerned about. The increasing popularity of centralized air conditioning and ventilation systems has led to an increasing market demand for air purification and disinfection devices. In order to ensure product performance, the performance of air purification and disinfection devices The development of test system becomes necessary. However, the existing air purification and disinfection device performance detection system has the following deficiencies:

(1) Existing air purification and disinfection device performance testing systems often set the fan at the air inlet of the wind tunnel, causing the air pressure in the wind tunnel to be greater than the external air pressure. During the test work, the measured gas may escape outside the wind tunnel, affecting the operator In good health;

(2) The air inlet and air outlet of the wind tunnel of the existing air purification and disinfection device performance testing system do not have airtight valves, which is not convenient for carrying out disinfection treatments such as formaldehyde fumigation to the wind tunnel;

(3) Existing air purification and disinfection device performance testing systems often lack effective treatment of air intake and exhaust, and can only test the counting efficiency or weighing efficiency of dust particles, and their functions are relatively single.

Contents of the invention

The purpose of this utility model is to design and manufacture a multifunctional air purification and disinfection device performance detection system, which can solve the problems that the existing test system is easy to produce the measured gas escape, and the wind tunnel is inconvenient for sanitation and disinfection treatment; further, to realize the air purification and disinfection device Determination of multiple performance indicators such as resistance, diameter counting efficiency and weighting efficiency of atmospheric dust and artificial dust, microbial elimination efficiency of atmospheric bacteria and artificial bacteria, removal efficiency of gaseous pollutants such as formaldehyde and toluene, and realize the test air volume Automatic adjustment and automatic recording and processing of sampling data.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A performance detection system for a multifunctional air purification and disinfection device, including a wind tunnel structure, a data acquisition control system, and an aerosol generation and collection system, characterized in that: the wind tunnel structure includes a wind tunnel, and the wind tunnel Both the air inlet and the air outlet are provided with electric airtight valves, and the air outlet of the wind tunnel is connected to an exhaust fan.

The preferred technical solution can also add the following technical features:

The air inlet of the wind tunnel is connected with an air inlet treatment box, and the primary effect filter, the medium effect filter and the high efficiency filter are successively arranged in the described air inlet treatment box, and the described air inlet treatment box is connected with the The electric airtight valves of the air inlets of the wind tunnel are connected.

The air outlet of the wind tunnel is also connected with an exhaust treatment box, and a high-efficiency filter is installed in the exhaust treatment box, and the exhaust treatment box is connected to the exhaust fan, and the exhaust air treatment box is connected to the exhaust fan. The fan is connected to the outside through the exhaust duct.

The wind tunnel includes an upstream test wind tunnel connected in sequence, a section of the air purification and disinfection device to be tested, and a downstream test wind tunnel. The downstream test wind tunnel is connected to the reversing static pressure box through a soft connection. The pressure boxes are respectively connected with two air volume measurement passages with different pipe diameters; the aerosol generation pipe, the upstream sampling pipe and the static pressure ring are sequentially arranged on the upstream test wind tunnel; the static pressure ring is sequentially arranged on the downstream test wind tunnel pressure ring, downstream sampling pipe; the air volume measurement path is connected with an orifice flowmeter.

A temperature and humidity sensor is set in the reversing static pressure box, the aerosol generating tube is connected to the aerosol generator, the upstream sampling tube is connected to the upstream sampler, and the measured air purification and disinfection device section The static pressure rings at both ends are connected to the differential pressure sensor, the downstream sampling pipe is connected to the downstream sampler, the two sides of the orifice flowmeter are respectively connected to the differential pressure sensor; the exhaust fan is connected to a frequency converter; And the electric air-tight valve, the frequency converter, the upstream sampler, the differential pressure sensor at both ends of the air purification and disinfection device, the differential pressure sensor at both sides of the orifice flowmeter, the downstream sampler, and the temperature and humidity sensor are respectively connected with the data collection of the computer. connected to the control card.

The aerosol generator is a DEHS, DOP or paraffin oil aerosol generator, and the upstream sampler and downstream sampler are laser particle counters.

The aerosol generator is a KCl solution aerosol generator, and the upstream sampler and downstream sampler are laser dust analyzers.

The aerosol generator is a microbial aerosol generator, and the upstream sampler and downstream sampler are Anderson planktonic samplers.

The aerosol generator is a gaseous pollutant generator, and the upstream sampler and downstream sampler are gaseous pollutant samplers.

The upstream test wind tunnel is supported by a fixed support, while the downstream test wind tunnel is supported by a movable support, and the computer controls the cylinder driving mechanism to drive the movable support to move freely.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the advantages of:

(1) The wind tunnel adopts a negative pressure design, which eliminates the concern of harmful gas leakage and ensures the safety of the staff;

(2) The air inlet and outlet of the wind tunnel are equipped with electric air-tight valves, which is convenient for disinfection treatment such as formaldehyde fumigation in the wind tunnel;

(3) High-efficiency filters are installed in the exhaust treatment box to filter and remove aerosols such as microorganisms and artificial dust, which can ensure that the exhaust does not damage the surrounding environment;

(4) The primary-effect, medium-efficiency, and high-efficiency filters are installed in the air inlet treatment box in sequence, and a universal rolling wheel is installed under the air inlet treatment box, so that the box body of the air inlet treatment section can be disassembled and removed at any time. flexible;

(5) The downstream testing wind tunnel adopts a fixed bracket support, which can be driven by computer control to adapt to the test of air purification and disinfection devices of different thicknesses;

(6) The connecting fixtures of the upstream and downstream air purification and disinfection devices to be tested are detachable and replaceable, so as to adapt to the detection of air purification and disinfection devices of different sizes and specifications;

(7) The air volume measurement section is divided into two measurement channels with different pipe diameters, which are respectively adapted to the performance testing of air purification and disinfection devices with different air volume ranges, so as to meet the test requirements of large-span air volume ranges;

(8) The utility model can realize the test of various purification efficiencies of the air purification and disinfection device by selecting different types of aerosol generators and samplers;

(9) The counting efficiency and weighting efficiency of dust particles can be automatically detected and given by the data acquisition automatic control system of the utility model, which is very convenient to use.

(10) The detection system of the utility model is multi-functional, intelligent, safe and convenient, suitable for performance detection of air-conditioning purification and disinfection devices, and can also be used as a performance detection system for "air filter for general ventilation" and "high-efficiency air filter", suitable for promotion.

Description of drawings

Fig. 1 is the schematic diagram of pipeline structure of the present utility model;

Fig. 2 is a schematic diagram of the utility model data acquisition control system;

Figure 3 is a flow chart of the performance test of the air purification and disinfection device.

Explanation of reference signs: 1-primary effect filter, 2-medium effect filter, 3-high efficiency filter, 4-inlet air treatment section, 5-electric airtight valve, 6-aerosol generating tube, 7-upstream test Wind tunnel, 8-upstream sampling pipe, 9-static pressure ring, 10-upstream passage connection fixture of the tested air purification and disinfection device, 11-tested air purification and disinfection device, 12-downstream passage connection fixture of the tested air purification and disinfection device, 13-Tested air purification and disinfection device section, 14-Static pressure ring, 15-Downstream test wind tunnel, 16-Downstream sampling pipe, 17-Soft connection, 18-Reversing static pressure box, 19, 20-Air volume measurement section, 21, 22-orifice flowmeter, 23, 24-electric airtight valve, 25-high efficiency filter, 26-exhaust treatment box, 27-exhaust fan, 28-exhaust fan room, 29-aerosol generator , 30-upstream sampler, 31-differential pressure sensor, 32-downstream sampler, 33-temperature and humidity sensor, 34, 35-differential pressure sensor, 36-frequency converter, 37-computer.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. The rated air volume range of the air purification and disinfection device that the detection system of the utility model can adapt to is 500-7200m ³ /h, the resistance range is 0-2500Pa (the precision of the resistance value can reach 0.1Pa), and there are mainly two sizes and specifications, namely 500× 500, 300×300, and other non-standard sizes can be equipped with reducing heads before and after the test piece and then connected to the test system.

As shown in Figure 1, the utility model is a performance detection system of a multifunctional air purification and disinfection device, including a wind tunnel structure, a data collection control system and an aerosol generation and collection system, wherein:

1. Wind tunnel structure:

The wind tunnel structure includes a wind tunnel, the wind tunnel is made of 1mm stainless steel plate, the basic size is DN500, the wind tunnel has an air inlet and an air exhaust port, and each section from the air inlet to the air exhaust port is divided into : Inlet air treatment section, aerosol generation section, mixing section, upstream sampling section, tested air purification and disinfection device section, downstream sampling section, static pressure box, air volume measurement section, exhaust air treatment section, exhaust fan section, exhaust air part.

As shown in Figure 1, the wind tunnel is provided with a primary filter 1, a medium-efficiency filter 2, and a high-efficiency filter 3 in sequence in the air inlet treatment box 4, and the air inlet treatment box 4 passes through a short air duct After being connected with the electric airtight valve 5, it is connected to the upstream test wind tunnel 7, and the aerosol generation tube 6, the upstream sampling tube 8, and the static pressure ring 9 are arranged in sequence on the upstream test wind tunnel. Adjacent to the upstream test wind tunnel, a downstream test wind tunnel 15 is set. Between the upstream and downstream test wind tunnels is the tested air purification and disinfection device section 13, and the tested air purification and disinfection device 11 is connected via the upstream and downstream tested air purification and disinfection devices. Fixtures 10 and 12 are respectively connected with the upstream and downstream testing wind tunnels. A static pressure ring 14 and a downstream sampling pipe 16 are sequentially arranged on the downstream test wind tunnel, and the downstream test wind tunnel is connected with a reversing static pressure box 18 through a soft connection 17 . After reversing the direction of the static plenum, connect two air flow measurement passages 19 and 20 with different pipe diameters respectively. The air flow measurement passages are connected with orifice plate flowmeters 21 and 22, electric airtight valves 23 and 24 in turn, and then connected to Exhaust air processing box 26, high-efficiency filter 25 is installed in the exhaust air processing box 26, and the exhaust air processed is discharged to the outside by exhaust fan 27 through exhaust duct, so the utility model is a negative pressure extracting type wind tunnel.

The main features of the present utility model are: (1) electric airtight valves 5, 23, 24 are arranged before the aerosol generation section and the exhaust treatment section of the wind tunnel, so as to carry out disinfection treatments such as formaldehyde fumigation to the wind tunnel; 2) The air outlet of the wind tunnel is connected with the exhaust fan 27, so that the negative pressure is always maintained in the wind tunnel, so that the harmful gas in the wind tunnel will not leak, so as to ensure the safety of people and property.

In addition, there are the following features:

A high-efficiency filter 25 is housed in the exhaust treatment box 26 to filter and remove aerosols such as microorganisms and artificial dust, so as to ensure that the exhaust does not damage the surrounding environment;

The primary effect, medium effect and high efficiency filters 1, 2 and 3 are successively installed in the air inlet treatment box 4, and universal rolling wheels are installed under the air inlet treatment box 4, so that the box body of the air inlet treatment section can be disassembled and moved at any time. Go, use flexibly. When detecting the removal efficiency of artificial dust and artificial bacteria of the air purification and disinfection device, the air intake treatment box 4 is retained; when the purification efficiency of atmospheric dust and atmospheric bacteria of the air purification and disinfection device is measured, the intake air treatment box 4 is moved;

In the utility model, the upstream testing wind tunnel 7 is supported by a fixed bracket, and the downstream testing wind tunnel 15 is supported by a movable bracket, and the computer can control the cylinder drive mechanism to drive the movable bracket to move freely, so as to adapt to air purification and disinfection devices of different thicknesses. the test;

In the utility model, the connecting fixtures of the upstream and downstream air purification and disinfection devices to be tested can be disassembled and replaced with connecting fixtures of other sizes, so as to adapt to the detection of air purification and disinfection devices of different sizes and specifications;

The air volume measurement section is divided into two measurement channels with different pipe diameters, which are respectively adapted to the performance testing of air purification and disinfection devices with different air volume ranges, so as to meet the test requirements of large-span air volume ranges.

2. Data acquisition control system:

As shown in Figure 2, the exhaust fan 27 is connected to the frequency converter 36, the temperature and humidity sensor 33 is arranged in the reversing static pressure box 18, the aerosol generating pipe 6 is connected to the aerosol generator 29, and the upstream sampling pipe 8 is connected to the upstream sampler 30. The static pressure rings 9 and 14 at both ends of the tested air purification and disinfection device section 13 are connected to the differential pressure sensor 31 to measure the resistance of the tested air purification and disinfection device. The downstream sampling pipe 16 is connected to the downstream sampler 32, and the orifice flow rate Both sides of gauges 21 and 22 are connected to differential pressure sensors 34 and 35 respectively. Electric airtight valve 5, frequency converter 36, electric airtight valves 23 and 24, upstream sampler 30, air purification and disinfection device resistance test differential pressure sensor 31, orifice flowmeter differential pressure sensor 34 and 35, downstream sampler 32, Temperature and humidity sensor 33, these parts are connected with the data acquisition control card of computer 37 respectively, carry out data acquisition, automatic control by computer.

3. Aerosol generation and collection system:

The utility model can realize various purification efficiency tests of the air purification and disinfection device by selecting different types of aerosol generators 29 and samplers 30 and 32 . Choose DEHS, DOP, paraffin oil and other oily aerosol generators and laser particle counters to test the particle counting efficiency; choose KCl solution and other aerosol generators and laser dust meters to test the particle weight efficiency test; choose microorganisms The aerosol generator and Anderson planktonic sampler can realize the test of microbial purification efficiency; the selection of formaldehyde and other gaseous pollutant generators and samplers can realize the test of the efficiency of gaseous pollutants. Except that the test of the purification efficiency of microorganisms and gaseous pollutants cannot be automatically detected online (because microbial aerosols generally need to be cultured in an incubator for 24 to 48 hours after sampling, the bacteria are counted and the results are calculated, so the automatic online detection of the removal efficiency of microorganisms cannot be realized. After the same gaseous pollutants are sampled, their accurate measurement generally needs to be analyzed by a special instrument such as a gas chromatograph, and the automatic online detection of the removal efficiency of gaseous pollutants cannot be realized), the counting efficiency and weighting efficiency of dust particles can be determined by this utility model A new type of data acquisition and automatic control system is provided for automatic online detection. The performance test process of the air purification and disinfection device is shown in Figure 3.

In sum, sum up the utility model advantage as follows:

(1) The wind tunnel adopts a negative pressure design, which eliminates the concern of harmful gas leakage and ensures the safety of the staff;

(2) The air inlet and outlet of the wind tunnel are equipped with electric air-tight valves, which is convenient for disinfection treatment such as formaldehyde fumigation in the wind tunnel;

(3) High-efficiency filters are installed in the exhaust treatment box to filter and remove aerosols such as microorganisms and artificial dust, which can ensure that the exhaust does not damage the surrounding environment;

(4) The primary-effect, medium-efficiency, and high-efficiency filters are installed in the air inlet treatment box in sequence, and a universal rolling wheel is installed under the air inlet treatment box, so that the box body of the air inlet treatment section can be disassembled and removed at any time. flexible;

(5) The downstream testing wind tunnel adopts a fixed bracket support, which can be driven by computer control to adapt to the test of air purification and disinfection devices of different thicknesses;

(6) The connecting fixtures of the upstream and downstream air purification and disinfection devices to be tested are detachable and replaceable, so as to adapt to the detection of air purification and disinfection devices of different sizes and specifications;

(7) The air volume measurement section is divided into two measurement channels with different pipe diameters, which are respectively adapted to the performance testing of air purification and disinfection devices with different air volume ranges, so as to meet the test requirements of large-span air volume ranges;

(8) The utility model can realize the test of various purification efficiencies of the air purification and disinfection device by selecting different types of aerosol generators and samplers;

(9) The counting efficiency and weighting efficiency of dust particles can be automatically detected and given by the data acquisition automatic control system of the utility model, which is very convenient to use.

(10) The detection system of the utility model is multi-functional, intelligent, safe and convenient, suitable for performance detection of air-conditioning purification and disinfection devices, and can also be used as a performance detection system for "air filter for general ventilation" and "high-efficiency air filter", suitable for promotion.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the limitable scope of the claims of the present utility model.

Claims (10)

1. A multifunctional air purification and disinfection device performance detection system, comprising wind tunnel structure, data acquisition control system and aerosol generation and acquisition system, is characterized in that: The wind tunnel structure includes a wind tunnel, the air inlet and outlet of the wind tunnel are both provided with electric airtight valves, and the air outlet of the wind tunnel is connected to an exhaust fan. 2. The multifunctional air purification and disinfection device performance detection system according to claim 1, characterized in that: the air inlet of the wind tunnel is connected with an air inlet treatment box, and the air inlet treatment box is sequentially provided with primary effect filter, medium effect filter and high efficiency filter, and the air inlet treatment box communicates with the electric airtight valve of the air inlet of the wind tunnel. 3. The multi-functional air purification and disinfection device performance detection system according to claim 1, characterized in that: the air outlet of the wind tunnel is also connected with an exhaust treatment box, and a high-efficiency filter is installed in the exhaust treatment box , the exhaust treatment box is connected to the exhaust fan, and the exhaust fan is connected to the outside through the exhaust pipe. 4. The multifunctional air purification and disinfection device performance testing system according to claim 1, 2 or 3, wherein the wind tunnel includes an upstream testing wind tunnel connected in sequence, and a section of the air purification and disinfection device to be tested With the downstream test wind tunnel, the downstream test wind tunnel is connected to the reversing static plenum box through a flexible connection, and the reversing static plenum box is respectively connected with two air volume measurement paths with different pipe diameters; the upstream testing wind tunnel An aerosol generating tube, an upstream sampling tube and a static pressure ring are sequentially arranged on the top; a static pressure ring and a downstream sampling tube are sequentially arranged on the downstream test wind tunnel; an orifice plate flowmeter is connected to the air flow measurement path. 5. The multifunctional air purification and disinfection device performance detection system according to claim 4, characterized in that: a temperature and humidity sensor is arranged in the reversing static pressure box, and the aerosol generating tube is connected to the aerosol generator , the upstream sampling pipe is connected to the upstream sampler, the static pressure ring at both ends of the measured air purification and disinfection device section is connected to the differential pressure sensor, the downstream sampling pipe is connected to the downstream sampler, and the hole Both sides of the plate flowmeter are respectively connected to the differential pressure sensor; the exhaust fan is connected to a frequency converter; The differential pressure sensor on both sides of the plate flowmeter, the downstream sampler, and the temperature and humidity sensor are respectively connected with the data acquisition control card of the computer. 6. The multifunctional air purification and disinfection device performance detection system according to claim 5, characterized in that: said aerosol generator is DEHS, DOP or paraffin oil oily aerosol generator, said upstream sampler and The downstream sampler is a laser particle counter. 7. The multifunctional air purification and disinfection device performance detection system according to claim 5, characterized in that: said aerosol generator is a KCl solution aerosol generator, and said upstream sampler and downstream sampler are laser Dust meter. 8. The multifunctional air purification and disinfection device performance detection system according to claim 5, characterized in that: said aerosol generator is a microbial aerosol generator, and said upstream sampler and downstream sampler are Anderson planktonic Bacteria sampler. 9. The multifunctional air purification and disinfection device performance detection system according to claim 5, characterized in that: said aerosol generator is a gaseous pollutant generator, and said upstream sampler and downstream sampler are gaseous pollutants object sampler. 10. The multifunctional air purification and disinfection device performance testing system according to claim 1, characterized in that: the upstream testing wind tunnel is supported by a fixed bracket, and the downstream testing wind tunnel is supported by a movable bracket, and The cylinder driving mechanism is controlled by computer to drive the movable bracket to move freely.

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