CN111157061A - Air diffuser air quantity display air port and air quantity testing method - Google Patents
Air diffuser air quantity display air port and air quantity testing method Download PDFInfo
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- CN111157061A CN111157061A CN202010164428.5A CN202010164428A CN111157061A CN 111157061 A CN111157061 A CN 111157061A CN 202010164428 A CN202010164428 A CN 202010164428A CN 111157061 A CN111157061 A CN 111157061A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
Abstract
The invention relates to the technical field of building ventilation and air conditioning engineering, and discloses an air diffuser air quantity display air port and an air quantity testing method, which comprise an air diffuser body, measuring pieces, a fixing frame, an air pipe connecting piece and an air quantity display, wherein two parallel measuring pieces are arranged in the air diffuser body; one end of the measuring piece is fixed through a fixing frame, the other end of the measuring piece is fixed through an air pipe connecting piece, and the fixing frame blocks the total pressure average pipe orifice and the static pressure average pipe orifice of the measuring piece on the side where the fixing frame is located; the air pipe connecting piece is provided with two air outlet pipe joints, one sides of the two air outlet pipe joints, facing the measuring sheet, are respectively communicated with the total pressure average pipe orifice or the static pressure average pipe orifice in a sealing mode, and the other sides of the two air outlet pipe joints are respectively communicated with the air volume display through air pipes. The invention has the beneficial effects that: the air diffuser air quantity display air port has the advantages that on one hand, the air quantity in the pipeline is measured and displayed, on the other hand, the existing air diffuser body of the pipeline type air supply device can be replaced, and the air diffuser air quantity display air port has the effects of low cost and small occupied space.
Description
Technical Field
The invention relates to the technical field of building ventilation and air conditioning engineering, in particular to an air quantity display air port of an air diffuser and an air quantity testing method.
Background
In a pipeline type air supply device such as a central air conditioner, a fresh air system and the like, the air quantity detection of the outlet air is generally needed so as to control the outlet air; the current wind speed and wind volume measuring device adopts the technical means that a plurality of pitot tubes are connected to a high-pressure average inner cavity and a low-pressure average inner cavity, an average value is obtained and then is connected with an external micro-differential pressure sensing transmitter through a channel tube, and the average value of the wind speed and the wind volume is calculated. The air quantity measuring device with the structure has the advantages of high cost, large volume and more complicated installation and use.
Disclosure of Invention
In order to overcome the defects, the invention provides an air quantity display air port of a diffuser.
In order to overcome the defects, the invention also provides a method for testing the air quantity of the air quantity display air port of the air diffuser.
In order to achieve the purpose, the technical scheme of the invention is as follows: an air diffuser air volume display air port comprises an air diffuser body, measuring pieces, a fixing frame, an air pipe connecting piece and an air volume display, wherein two parallel measuring pieces are arranged in the air diffuser body; one end of each measuring sheet is fixed on the inner wall of one side of the air diffuser body through a fixing frame, and the other end of each measuring sheet is fixed on the inner wall of the other side of the air diffuser body through an air pipe connecting piece; the measuring sheet is provided with a total pressure average pipe hole and a static pressure average pipe hole which are parallel in the length direction, and the fixing frame seals and seals a total pressure average pipe hole opening and a static pressure average pipe hole opening of the end of the measuring sheet on the side where the fixing frame is located; the air pipe connecting piece is provided with two air outlet pipe joints, one sides of the two air outlet pipe joints facing the measuring sheets are respectively communicated with the total pressure average pipe orifice or the static pressure average pipe orifice in a sealing mode, and the other sides of the two air outlet pipe joints of each measuring sheet are respectively communicated with the air volume display through air pipes.
Preferably, the measuring piece is provided with a total pressure average tube hole, a static pressure average tube hole and a temperature compensation tube hole which are parallel in the length direction, a total pressure hole communicated with the total pressure average tube hole is formed in the windward side of the measuring piece, a static pressure hole penetrating through the static pressure average tube hole is formed in the side wall of the measuring piece, and the plane where the static pressure hole is located is perpendicular to the plane where the total pressure hole is located.
Preferably, the measuring sheet is provided with a total pressure average tube hole, a static pressure average tube hole and a temperature compensation tube hole which are parallel to each other in the length direction, a total pressure long hole groove communicated with the total pressure average tube hole is formed in the windward side of the measuring sheet, and the length of the total pressure long hole groove is the same as that of the total pressure average tube hole; the side wall of the measuring piece is provided with a static pressure long hole groove which penetrates through the static pressure average pipe hole, the length of the static pressure long hole groove is the same as that of the total pressure average pipe hole, and a connecting piece passing through an axis is arranged in the static pressure long hole groove; the plane of the static pressure long hole groove is vertical to the plane of the total pressure long hole groove; the connecting piece and the total pressure long hole groove are positioned on the same plane and are connected with two static pressure average pipe holes divided by the static pressure long hole groove.
The application also provides an air quantity detection method, which comprises the following steps:
1) installing an air quantity display air port of the air diffuser at an air outlet of an air supply pipeline; the windward side of the measuring sheet is opposite to the wind flow direction of the air supply pipeline;
2) respectively measuring the total pressure in the air supply pipeline through the total pressure average pipe holes of the two measuring sheets to obtain a total pressure average;
3) respectively measuring the static pressure in the air supply pipeline through static pressure average pipe holes of the two measuring sheets to obtain a static pressure average;
4) obtaining the air volume by the following formula (1), formula (2) and formula (3);
total mean-static mean = dynamic pressure (1)
Dynamic pressure =0.5 × air density (kg/m3) × wind speed (m/s) square (2)
Wind speed × wind volume shows the effective sectional area of the tuyere = wind volume (3).
The invention has the beneficial effects that: the air diffuser air quantity display air port has the advantages that the air quantity in the pipeline can be measured and displayed, the existing air diffuser of the pipeline type air supply device can be replaced, and the air diffuser air quantity display air port is low in cost and small in occupied space.
Drawings
Fig. 1 is a schematic view of the air quantity display air port structure of the diffuser of the present invention.
Fig. 2 is a schematic view of a test strip structure in embodiment 1 of the present invention.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a schematic view of a test strip structure in embodiment 2 of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
Fig. 1, fig. 2, fig. 3 show an air diffuser air quantity display air port, which comprises an air diffuser body 1, measuring pieces 2, a fixing frame 3, an air pipe connecting piece 4 and an air quantity display 5, wherein two parallel measuring pieces 2 are arranged in the air diffuser body 1; one end of each measuring sheet 2 is fixed on the inner wall of one side of the air diffuser body 1 through a fixing frame 3, and the other end is fixed on the inner wall of the other side of the air diffuser body 1 through an air pipe connecting piece 4; the measuring sheet 2 is provided with a total pressure average tube hole 201 and a static pressure average tube hole 202 which are parallel in the length direction, and the fixing frame 3 seals and seals a total pressure average tube hole opening and a static pressure average tube hole opening of the measuring sheet end on the side where the fixing frame is located; the air pipe connecting piece 4 is provided with two air outlet pipe joints, one sides of the two air outlet pipe joints facing the measuring piece are respectively communicated with the total pressure average pipe orifice or the static pressure average pipe orifice in a sealing mode, and the other sides of the two air outlet pipe joints are respectively communicated with the air volume display 5 through air pipes.
In this embodiment, the measuring piece 2 is provided with a total pressure average pipe hole 201, a static pressure average pipe hole 202 and a temperature compensation pipe hole 203 which are parallel in the length direction, a total pressure hole 204 communicated with the total pressure average pipe hole is arranged on the windward side of the measuring piece, a static pressure hole 205 penetrating through the static pressure average pipe hole is arranged on the side wall of the measuring piece, and the plane of the static pressure hole 205 is perpendicular to the plane of the total pressure hole 204.
The total pressure holes 204 and the static pressure holes 205 are arranged in the number and the distribution positions according to GB/T1236-2017 or
GB/T50243-2016 or GB 51251-2017. The air volume calculation method comprises the following steps: the static pressure measured by the static pressure average pipe hole is subtracted from the total pressure measured by the total pressure average pipe hole to obtain the dynamic pressure, then the wind speed is calculated according to the dynamic pressure, the wind volume is obtained according to the multiplication of the wind speed and the sectional area, and the on-line calculation and detection can be automatically carried out.
Example 2
Fig. 1 and 4 show an air diffuser air quantity display air port, which comprises an air diffuser body 1, measuring sheets 2, a fixing frame 3, an air pipe connecting piece 4 and an air quantity display 5, wherein two parallel measuring sheets 2 are arranged in the air diffuser body 1; one end of each measuring sheet 2 is fixed on the inner wall of one side of the air diffuser body 1 through a fixing frame 3, and the other end is fixed on the inner wall of the other side of the air diffuser body 1 through an air pipe connecting piece 4; the measuring sheet 2 is provided with a total pressure average tube hole 201 and a static pressure average tube hole 202 which are parallel in the length direction, and the fixing frame 3 seals and seals a total pressure average tube hole opening and a static pressure average tube hole opening of the measuring sheet end on the side where the fixing frame is located; the air pipe connecting piece 4 is provided with two air outlet pipe joints, one sides of the two air outlet pipe joints facing the measuring piece are respectively communicated with the total pressure average pipe orifice or the static pressure average pipe orifice in a sealing mode, and the other sides of the two air outlet pipe joints are respectively communicated with the air volume display 5 through air pipes.
The measuring piece 2 is provided with a total pressure average tube hole 201, a static pressure average tube hole 202 and a temperature compensation tube hole 203 which are parallel in the length direction, the windward side of the measuring piece is provided with a total pressure long hole groove 206 communicated with the total pressure average tube hole, and the length of the total pressure long hole groove is the same as that of the total pressure average tube hole; a static pressure long hole groove 207 penetrating through the static pressure average pipe hole is formed in the side wall of the measuring piece, the length of the static pressure long hole groove is the same as that of the total pressure average pipe hole, and a connecting piece passing through an axis is arranged in the static pressure long hole groove; the plane of the static pressure long hole groove is vertical to the plane of the total pressure long hole groove; the connecting piece and the total pressure long hole groove are positioned on the same plane and are connected with two static pressure average pipe holes divided by the static pressure long hole groove.
This structure adopts the static pressure slot and total pressure slot of all-through groove, has further optimized among embodiment 1 that need the fixed point distance to set up the loaded down with trivial details problem of processing that total pressure hole and static pressure hole cause, and the air inlet is more even simultaneously, and measurement accuracy is higher.
Example 3
An air volume detection method comprises the following steps:
1) installing an air quantity display air port of the air diffuser shown in the embodiment 1 or 2 at an air outlet of an air supply pipeline; the windward side of the measuring sheet is opposite to the wind flow direction of the air supply pipeline;
2) respectively measuring the total pressure in the air supply pipeline through the total pressure average pipe holes of the two measuring sheets to obtain a total pressure average;
3) respectively measuring the static pressure in the air supply pipeline through static pressure average pipe holes of the two measuring sheets to obtain a static pressure average;
4) obtaining the air volume by the following formula (1), formula (2) and formula (3);
total mean-static mean = dynamic pressure (1)
Dynamic pressure =0.5 × air density (kg/m3) × wind speed (m/s) square (2)
Wind speed × wind volume shows the effective sectional area of the tuyere = wind volume (3).
In practical application, the air volume testing method of the embodiment can be integrated with a control chip in an air volume display by utilizing the prior art, and real-time measurement and display can be realized by starting up.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides an air diffuser amount of wind shows wind gap, includes air diffuser body, survey piece, mount, trachea connecting piece and amount of wind display, its characterized in that: two parallel measuring sheets are arranged in the air diffuser body; one end of each measuring sheet is fixed on the inner wall of one side of the air diffuser body through a fixing frame, and the other end of each measuring sheet is fixed on the inner wall of the other side of the air diffuser body through an air pipe connecting piece; the measuring sheet is provided with a total pressure average pipe hole and a static pressure average pipe hole which are parallel in the length direction, and the fixing frame seals and seals a total pressure average pipe hole opening and a static pressure average pipe hole opening of the end of the measuring sheet on the side where the fixing frame is located; the gas pipe connecting piece is provided with two gas outlet pipe joints, and one sides of the two gas outlet pipe joints, which face the measuring sheet, are respectively communicated with the total pressure average pipe orifice or the static pressure average pipe orifice in a sealing manner; the other sides of the two air outlet pipe joints of each measuring piece are respectively communicated with the air quantity display through air pipes.
2. The diffuser air volume display air port of claim 1, characterized in that: the measuring piece is provided with a total pressure average tube hole, a static pressure average tube hole and a temperature compensation tube hole which are parallel in the length direction, a total pressure hole communicated with the total pressure average tube hole is formed in the windward side of the measuring piece, a static pressure hole penetrating through the static pressure average tube hole is formed in the side wall of the measuring piece, and the plane where the static pressure hole is located is perpendicular to the plane where the total pressure hole is located.
3. The diffuser air volume display air port of claim 1, characterized in that: the wind-facing surface of the measuring piece is provided with a total-pressure long hole groove communicated with the total-pressure average hole, and the length of the total-pressure long hole groove is the same as that of the total-pressure average hole; the side wall of the measuring piece is provided with a static pressure long hole groove which penetrates through the static pressure average pipe hole, the length of the static pressure long hole groove is the same as that of the total pressure average pipe hole, and a connecting piece passing through an axis is arranged in the static pressure long hole groove; the plane of the static pressure long hole groove is vertical to the plane of the total pressure long hole groove; the connecting piece and the total pressure long hole groove are positioned on the same plane and are connected with two static pressure average pipe holes divided by the static pressure long hole groove.
4. An air volume detection method is characterized in that: the method comprises the following steps:
1) installing the air quantity display air opening of the air diffuser of any one of claims 1 to 3 at the air outlet of an air supply pipeline; the windward side of the measuring sheet is opposite to the wind flow direction of the air supply pipeline;
2) respectively measuring the total pressure in the air supply pipeline through the total pressure average pipe holes of the two measuring sheets to obtain a total pressure average;
3) respectively measuring the static pressure in the air supply pipeline through static pressure average pipe holes of the two measuring sheets to obtain a static pressure average;
4) obtaining the air volume by the following formula (1), formula (2) and formula (3);
total mean-static mean = dynamic pressure (1)
Dynamic pressure =0.5 × air density (kg/m3) × wind speed (m/s) square (2)
Wind speed × wind volume shows the effective sectional area of the tuyere = wind volume (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164428.5A CN111157061A (en) | 2020-03-11 | 2020-03-11 | Air diffuser air quantity display air port and air quantity testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010164428.5A CN111157061A (en) | 2020-03-11 | 2020-03-11 | Air diffuser air quantity display air port and air quantity testing method |
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| CN111157061A true CN111157061A (en) | 2020-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
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- 2020-03-11 CN CN202010164428.5A patent/CN111157061A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
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