Filter element performance demonstration method

Abstract

The invention relates to the technical field of filter element performance demonstration, in particular to a filter element performance demonstration method which can be used for demonstrating and testing resistance performance of different air filter elements to air. Comprising a demonstration device and a demonstration method. The demonstration device comprises an installation body, an air feeder, an air filter element, a differential pressure sensor, an air speed sensor, a display and a control module. The demonstration method comprises the following steps: transmitting wind speed information and pressure difference information to the display for real-time display through the control module; start and stop and air supply efficiency of the air feeder are controlled through the control module. A'wind speed-pressure difference 'coordinate system is established through wind speed information and pressure difference information collected by a control module, and the'wind speed-pressure difference' coordinate system records a wind speed-pressure difference change curve in a demonstration process by taking the wind speed information as a horizontal axis and taking the pressure difference information as a longitudinal axis; and displaying the wind speed-pressure difference change curve in the wind speed-pressure difference coordinate system and the wind speed-pressure difference change curve in the wind speed-pressure difference coordinate system in real time through a display.

Description

Technical Field

[0001] The invention relates to the technical field of filter element performance demonstration, in particular to a filter element performance demonstration method. Background Art

[0002] The air filter is an important component used in many air treatment systems such as air circulation system, fresh air system, air conditioning, and automobile air intake system.

[0003] Under the premise of the same filtering capacity, the resistance of the air filter to the air can directly affect the energy consumption and other performance of the filtering product using this air filter. Generally, under the premise of the same filtering capacity, the smaller the resistance of the filter to the air, the lower the relative energy consumption of the filtering product using this air filter, and the more energy-saving it is.

[0004] However, the air resistance performance of air filters produced by different manufacturers is not the same. In order to help customers have a more intuitive understanding of the air resistance performance of different air filters and help customers accurately choose suitable low-energy and energy-saving air filters, this filter performance demonstration method is specially developed. Summary of the invention

[0005] The purpose of the present invention is to propose a filter element performance demonstration method, which can be used to demonstrate and test the resistance performance of different air filter elements to air.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A filter element performance demonstration method, including a demonstration device and a demonstration method; the demonstration device includes a mounting body, a blower, an air filter element, a pressure difference sensor, a wind speed sensor, a display and a control module, the mounting body is provided with a ventilation channel, the air inlet and the air outlet of the ventilation channel are both connected to the outside of the mounting body; the blower is arranged at one end of the ventilation channel; the air filter element is detachably arranged at the other end of the ventilation channel; the pressure difference sensor has a wind pressure collecting part 1 and a wind pressure collecting part 2, the pressure difference sensor is arranged on the mounting body, the wind pressure collecting part 1 and the wind pressure collecting part 2 are both arranged in the ventilation channel, respectively arranged on the windward direction side and the leeward direction side of the air filter element; the wind speed sensor is arranged in the ventilation channel, arranged on the windward direction side of the air filter element; the display is arranged on the mounting body; the control The control module is arranged on the mounting body, and is connected with the pressure difference sensor, the wind speed sensor, the blower and the display; the demonstration method comprises: collecting the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor through the control module, and transmitting the wind speed information of the wind speed sensor and the pressure difference information to the display for real-time display after being processed by the control module; controlling the start and stop of the blower through the control module, and controlling the air supply efficiency of the blower to control the wind speed and perform demonstration; establishing a "wind speed-pressure difference" coordinate system through the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor collected by the control module, and the "wind speed-pressure difference" coordinate system uses the wind speed information as the horizontal axis and the pressure difference information as the vertical axis to record the wind speed-pressure difference change curve during the demonstration process, and displays the "wind speed-pressure difference" coordinate system and the wind speed-pressure difference change curve in the "wind speed-pressure difference" coordinate system in real time through the display.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the control module control includes a PLC module and a computer module, the PLC module is used to collect the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor, and control the air blower, the computer module is used to read the PLC module information and establish a "wind speed-pressure difference" coordinate system according to the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor, and draw a wind speed-pressure difference change curve.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the control module can control the air supply wind speed of the blower to change in a linear increasing or decreasing manner within a specified demonstration period;

[0010] The control module records the wind speed-pressure difference change curve in the demonstration period as a test period curve, and calculates the area of ​​the region where the test period curve is projected onto the horizontal axis, and the area is recorded as a demonstration result;

[0011] Replace different air filters and perform demonstrations. The control module records and numbers the data and results of each demonstration process, and automatically compares the demonstration results of each demonstration. Then, the comparison results are sorted in a specified order from large to small or from small to large. The sorting can be displayed or viewed on the display.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the installation body includes a box body and a box cover, one side of the box body is not closed, the box cover is arranged on the unclosed side of the box body, one side of the box cover is hinged to the box body, and the box cover can be swung to close the box body and then connected to the box body through a lock; one end of the outside of the box body is provided with casters for support, and the other end is provided with a pull rod; a mounting body and a battery are arranged in the box body, the battery is arranged at the bottom of the box body, the mounting body is arranged in the box body and fixedly connected thereto, the ventilation channel is arranged on the mounting body, the air inlet and the air outlet are respectively arranged at two ends of the mounting body, and the box body is provided with a avoidance opening opposite to the air inlet and the air outlet.

[0013] On the basis of the above solution and as a preferred solution of the above solution: the display is arranged on a side of the mounting body close to the opening direction of the box body.

[0014] On the basis of the above solution and as a preferred solution of the above solution: a handle is provided on one side in the width direction of the box body and on the side in the direction where the pull rod is provided.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: a hollow installation opening is provided on one side of the ventilation channel, and U-shaped grooves extending from the installation opening to the bottom side of the ventilation channel are provided on both sides of the ventilation channel, the air filter element is inserted into the installation opening, and both sides of the air filter element are embedded in the U-shaped grooves.

[0016] On the basis of the above scheme and as a preferred scheme of the above scheme: filter screens are provided at both the air inlet and the air outlet.

[0017] In order to demonstrate and test the air resistance performance of different air filter elements, the present invention has the following beneficial effects:

[0018] The filter element performance demonstration method of the present invention is to place the air filter element to be tested in the ventilation channel, then start the blower, and use the blower to introduce air from the air inlet into the air supply channel and push it toward the air outlet continuously and stably. During the process, the air pressure difference before and after the air passes through the air filter element can be obtained by the pressure difference sensor and displayed intuitively through the display under the action of the control module. Thereby, the air resistance of the air filter element is tested.

[0019] When it is necessary to test a variety of different air filters, since the air filter is detachably set in the ventilation channel, it is only necessary to replace different air filters for testing and demonstration comparison, so as to draw conclusions about the air resistance performance of these filters and know the energy-saving performance of the air filter (the smaller the pressure difference measured by the differential pressure sensor, the smaller the air resistance of the air filter, and the more energy-saving it is to use).

[0020] It is worth noting that the filter element performance demonstration method of the present invention can intuitively see the pressure difference changes of the tested air filter element under different wind speeds by checking the wind speed-pressure difference change curve. It is not a single simple test, the test results are reliable, and it can better reflect the energy-saving performance of the air filter element.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flowchart of the steps of the demonstration method of the present invention;

[0023] Figure 2 It is a schematic diagram of the demonstration results of the present invention;

[0024] Figure 3 The demonstration device of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 4 The demonstration device of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the exploded assembly of the box body of the present invention;

[0027] Figure 6 The demonstration device of the present invention is shown in FIG. Figure 3 ;

[0028] Figure 7 It is a schematic diagram of the ventilation channel arrangement of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-7 The present invention discloses a filter element performance demonstration method, which can be used to demonstrate and test the air resistance performance of different air filter elements 300.

[0031] In the disclosed embodiments, a filter element performance demonstration method includes a demonstration device and a demonstration method.

[0032] The demonstration device includes a mounting body 100, such as Figure 3-5 and Figure 7 As shown, the blower 200, the air filter 300, the pressure difference sensor 400, the wind speed sensor 500, the display 600 and the control module 700, the installation body 100 is provided with a ventilation channel 105, the air inlet 106 and the air outlet 107 of the ventilation channel 105 are both connected to the outside of the installation body 100; the blower 200 is arranged at one end of the ventilation channel 105; the air filter 300 is detachably arranged at the other end of the ventilation channel 105; the pressure difference sensor 400 has a wind pressure collection part 1 401 and a wind pressure collection part 2 402, and ... The differential pressure sensor 400 is arranged on the mounting body 100, and the wind pressure collecting unit 1 401 and the wind pressure collecting unit 2 402 are both arranged in the ventilation channel 105, respectively arranged on the windward side and the leeward side of the air filter 300; the wind speed sensor 500 is arranged in the ventilation channel 105, and is arranged on the windward side of the air filter 300; the display 600 is arranged on the mounting body 100; the control module 700 is arranged on the mounting body 100, and is connected to the differential pressure sensor 400, the wind speed sensor 500, the blower 200 and the display 600.

[0033] like Figure 1-2 As shown, the demonstration method includes: collecting wind speed information of the wind speed sensor 500 and pressure difference information of the pressure difference sensor 400 through the control module 700, and transmitting the wind speed information of the wind speed sensor 500 and the pressure difference information of the pressure difference sensor 400 to the display 600 for real-time display after being processed by the control module 700; controlling the start and stop of the blower 200 through the control module 700, and controlling the air supply efficiency of the blower 200 (controlling the fan blade speed) to control the wind speed and perform a demonstration; establishing a "wind speed-pressure difference" coordinate system through the wind speed information of the wind speed sensor 500 and the pressure difference information of the pressure difference sensor 400 collected by the control module 700, the "wind speed-pressure difference" coordinate system uses the wind speed information as the horizontal axis and the pressure difference information as the vertical axis to record the wind speed-pressure difference change curve during the demonstration process, and the "wind speed-pressure difference" coordinate system and the wind speed-pressure difference change curve in the "wind speed-pressure difference" coordinate system are displayed in real time through the display 600.

[0034] During the demonstration, the filter element performance demonstration method of the present invention is to place the air filter element 300 to be tested in the ventilation channel 105, and then start the blower 200, and use the blower 200 to introduce air from the air inlet 106 into the air supply channel and continuously and stably push it toward the air outlet 107. During the process, the air pressure difference before and after the air passes through the air filter element 300 can be obtained by the pressure difference sensor 400 and intuitively displayed through the display 600 under the action of the control module 700. Thereby, the air resistance of the air filter element 300 is tested.

[0035] When it is necessary to test a variety of different air filter elements 300, since the air filter element 300 is detachably arranged in the ventilation channel 105, it is only necessary to replace different air filter elements 300 for testing and demonstration comparison, so as to draw conclusions about the air resistance performance of these filter elements and know the energy-saving performance of the air filter element 300 (the smaller the pressure difference measured by the pressure difference sensor 400, the smaller the air resistance of the air filter element 300, and the more energy-saving it is to use).

[0036] It is worth noting that the filter element performance demonstration method of the present invention can intuitively see the pressure difference change of the tested air filter element 300 under different wind speed conditions by checking the wind speed-pressure difference change curve. It is not a single simple test, the test result is reliable, and it can better reflect the energy-saving performance of the air filter element 300.

[0037] In the embodiment of the present disclosure, the control module 700 controls a PLC module and a computer module. The PLC module is used to collect wind speed information from the wind speed sensor 500 and pressure difference information from the pressure difference sensor 400 and control the blower 200. The computer module is used to read the PLC module information and establish a "wind speed-pressure difference" coordinate system based on the wind speed information from the wind speed sensor 500 and the pressure difference information from the pressure difference sensor 400, as well as draw a wind speed-pressure difference change curve.

[0038] Further, the control module 700 can control the air supply wind speed of the blower 200 to change in a linear increasing or decreasing manner within a specified demonstration cycle; the control module 700 records the wind speed-pressure difference change curve within the demonstration cycle as a test cycle curve, and calculates the area of ​​the area where the test cycle curve is projected to the horizontal axis, and the area is recorded as the demonstration result; different air filter elements 300 are replaced and demonstrated, and the control module 700 records and numbers the demonstration process data and results of each time, and automatically compares the demonstration results of each demonstration, and then sorts them in a specified order from large to small or from small to large according to the comparison results, and the sorting can be displayed or consulted through the display 600. Because the wind speed changes in each test are the same, the test time is the same, and it is a test cycle, the performance of the air filter element 300 on air resistance can be intuitively understood through the demonstration results (the size of the area). It can be understood that the smaller the area of ​​the demonstration result, the better the performance of the air filter element 300.

[0039] In the disclosed embodiment, the installation body 100 includes a box body 101 and a box cover 103. One side of the box body 101 is not closed. The box cover 103 is arranged on the unclosed side of the box body 101. One side of the box cover 103 is hinged to the box body 101. The box cover 103 can swing to close the box body 101 and then be connected to the box body 101 through a lock; one end of the outside of the box body 101 is provided with a caster 111 for support, and the other end is provided with a pull rod 112; a mounting body 114 and a battery 800 are arranged in the box body 101, and the battery 800 is arranged at the bottom of the box body 101. The mounting body 114 is arranged in the box body 101 and fixedly connected thereto, a ventilation channel 105 is arranged on the mounting body 114, and an air inlet 106 and an air outlet 107 are respectively arranged at both ends of the mounting body 114. A avoidance opening 102 opposite to the air inlet 106 and the air outlet 107 is provided on the box body 101.

[0040] During the demonstration, the box cover 103 is in the following Figure 3 In the open state shown, the air filter element 300 to be tested is set in the ventilation channel 105, and then the blower 200 is started, and the air is introduced into the air supply channel from the air inlet 106 by the blower 200 and pushed toward the air outlet 107 continuously and stably.

[0041] Generally, when the box body 101 and the box cover 103 are closed, the effect is as follows: Figure 6 The box body 101 and the box cover 103 can provide perfect protection for the functional components therein. In addition, when the pull rod 112 is provided, the caster 111 is supported on the ground, and then the pull rod 112 is held to drag and move, which is very convenient and labor-saving.

[0042] Furthermore, to facilitate carrying, a handle 113 is provided on one side of the box body 101 in the width direction and on one side in the direction of the pull rod 112 .

[0043] The storage battery 800 is a rechargeable storage battery 800, and a matching external charging plug can also be provided for charging or plugging into an external power source when the battery is insufficient.

[0044] In order to facilitate observation of the display 600 to view the demonstration process, the display 600 is arranged on a side of the installation body 114 close to the opening direction of the box body 101.

[0045] In order to facilitate the disassembly, assembly and replacement of the air filter 300, a hollow installation port 109 is provided on one side of the ventilation channel 105, and U-shaped grooves 110 extending from the installation port 109 to the bottom side of the ventilation channel 105 are provided on both sides of the ventilation channel 105. During installation, the air filter 300 is inserted into the installation port 109, and the two sides of the air filter 300 are embedded in the U-shaped grooves 110. If replacement is required, the air filter 300 can be simply pulled out from the installation port 109 and another air filter 300 can be inserted.

[0046] The air inlet 106 and the air outlet 107 are both provided with filter screens 108 for filtering to protect the ventilation passage 105 .

[0047] In addition, if Figure 2 As shown, a storage layer 104 can also be provided in the box cover 103, and the storage layer can be used to collect and store the air filter element 300.

[0048] In summary, the filter element performance demonstration method can be widely used in exhibitions, meetings with customers and other occasions for demonstration to customers. Through the demonstration and comparison of different air filters, under the premise of the same known filtering capacity (the filtering capacity is usually identified by a professional third-party identification agency and provides evaluation materials), the better the air filter element, the smaller the resistance to air, and the lower the relative energy consumption of the filtering product using the air filter element 300, the more energy-saving. It is convenient for customers to have a more intuitive understanding of the resistance performance of different air filter elements 300 to air, which is conducive to customers accurately selecting suitable low-energy and energy-saving air filter elements 300.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter element performance demonstration method, characterized in that: Including demonstration devices and demonstration methods; The demonstration device includes a mounting body, a blower, an air filter, a pressure difference sensor, a wind speed sensor, a display and a control module. The mounting body is provided with a ventilation channel, and the air inlet and the air outlet of the ventilation channel are both connected to the outside of the mounting body; the blower is arranged at one end of the ventilation channel; the air filter is detachably arranged at the other end of the ventilation channel; the pressure difference sensor has a wind pressure collecting part 1 and a wind pressure collecting part 2, the pressure difference sensor is arranged on the mounting body, the wind pressure collecting part 1 and the wind pressure collecting part 2 are both arranged in the ventilation channel, respectively arranged on the windward direction side and the leeward direction side of the air filter; the wind speed sensor is arranged in the ventilation channel, arranged on the windward direction side of the air filter; the display is arranged on the mounting body; The control module is arranged on the mounting body and is connected to the pressure difference sensor, the wind speed sensor, the blower and the display; The demonstration method comprises: The wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor are collected by the control module, and are processed by the control module and transmitted to the display for real-time display; The control module is used to control the start and stop of the blower, and the air supply efficiency of the blower is controlled to control the wind speed and perform a demonstration; A "wind speed-pressure difference" coordinate system is established through the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor collected by the control module. The "wind speed-pressure difference" coordinate system uses the wind speed information as the horizontal axis and the pressure difference information as the vertical axis to record the wind speed-pressure difference change curve during the demonstration process, and the "wind speed-pressure difference" coordinate system and the wind speed-pressure difference change curve in the "wind speed-pressure difference" coordinate system are displayed in real time through the display.

2. The filter element performance demonstration method according to claim 1, characterized in that: The control module controls a PLC module and a computer module. The PLC module is used to collect the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor and control the blower. The computer module is used to read the PLC module information and establish a "wind speed-pressure difference" coordinate system according to the wind speed information of the wind speed sensor and the pressure difference information of the pressure difference sensor, and draw a wind speed-pressure difference change curve.

3. The filter element performance demonstration method according to claim 1 or 2, characterized in that: The control module can control the air supply speed of the blower to change in a linear increasing or decreasing manner within a specified demonstration period; The control module records the wind speed-pressure difference change curve in the demonstration period as a test period curve, and calculates the area of ​​the region where the test period curve is projected onto the horizontal axis, and the area is recorded as a demonstration result; Replace different air filters and perform demonstrations. The control module records and numbers the data and results of each demonstration process, and automatically compares the demonstration results of each demonstration. Then, the comparison results are sorted in a specified order from large to small or from small to large. The sorting can be displayed or viewed on the display.

4. The filter element performance demonstration method according to claim 1, characterized in that: The installation body comprises a box body and a box cover, one side of the box body is not closed, the box cover is arranged on the unclosed side of the box body, one side of the box cover is hinged to the box body, and the box cover can be swung to close the box body and then connected to the box body through a lock; One end of the outer part of the box is provided with a caster for support, and the other end is provided with a pull rod; The box body is provided with a mounting body and a battery, the battery is arranged at the bottom of the box body, the mounting body is arranged in the box body and fixedly connected thereto, the ventilation passage is arranged on the mounting body, the air inlet and the air outlet are respectively arranged at two ends of the mounting body, and the box body is provided with a avoidance opening opposite to the air inlet and the air outlet.

5. The filter element performance demonstration method according to claim 4, characterized in that: The display is arranged on a side of the mounting body close to the opening direction of the box body.

6. The filter element performance demonstration method according to claim 4, characterized in that: One side of the box body in the width direction and one side in the direction of the pull rod are both provided with handles.

7. The filter element performance demonstration method according to claim 1, characterized in that: A hollow installation opening is provided on one side of the ventilation channel, and U-shaped grooves extending from the installation opening to the bottom side of the ventilation channel are provided on both sides of the ventilation channel. The air filter element is inserted into the installation opening, and both sides of the air filter element are embedded in the U-shaped grooves.

8. The filter element performance demonstration method according to claim 1, characterized in that: Filters are provided at the air inlet and the air outlet.

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