CN213933499U - Combined air collection box and air permeability detection system - Google Patents

Abstract

The utility model discloses a combination formula air collecting box and air infiltration volume detecting system, combination formula air collecting box includes: the air inlet side wall of the basic air box body is provided with a first air inlet, the air outlet side wall of the basic air box body is provided with a first air outlet, and the splicing side wall of the basic air box body is provided with a first communication port; the air inlet side wall of the spliced air box body is provided with a second air inlet, and the spliced side wall is provided with a second communication port; the exhaust pipe is arranged at the first air outlet of the basic air box body; the anemoscope is arranged on the exhaust pipe and used for detecting the gas flowing speed in the exhaust pipe; the spliced air box body is suitable for being spliced and placed on the periphery of the basic air box body, and the second communication port of the spliced air box body is communicated with the first communication port of the basic air box body. The combined air collecting box can be spliced into a corresponding size based on the size of the door and window to be detected, and can be suitable for door and window with various sizes.

Description

Combined air collection box and air permeability detection system

Technical Field

The utility model relates to an air infiltration volume detects the field, further relates to combination formula air collecting box and air infiltration volume detecting system.

Background

The three-property detection of the door and window refers to the detection of wind pressure resistance, air tightness and water tightness of the door and window. According to the new standard for detecting the three properties of doors and windows, namely a method for detecting the air tightness, water tightness and wind pressure resistance of external doors and windows of a building GB/T7106-2019, the air tightness of the doors and windows is detected by adopting an air collection box method.

The air collection box method means that an air collection box should be connected to an opening portion of a pressure box for collecting and measuring an air permeation amount and an additional air permeation amount permeated into or oozed out of the exterior door and window itself. At present, an air collection box method is an effective method for detecting the air tightness of doors and windows.

However, it should be noted that the air collection boxes of the triple-performance door and window testing machine produced by domestic door and window equipment manufacturers according to the new standard are all integral buckling boxes, the sizes of the air collection boxes are fixed and cannot be adjusted, and the sizes of doors and windows used in actual buildings are various, and the requirements of all sizes cannot be met obviously by adopting the buckling boxes with fixed sizes. That is, for different sizes of doors and windows, the air collection boxes with different sizes need to be replaced, and a new door and window three-property testing machine needs to be purchased at high cost, so that high cost needs to be spent on door and window detection; in addition, old equipment can only be scrapped, which causes serious waste of resources.

In summary, there is a need for an improved air collection box for use in conventional door and window inspection.

SUMMERY OF THE UTILITY MODEL

To the technical problem, an object of the utility model is to provide a modular air collecting box and air infiltration volume detecting system, modular air collecting box can splice for corresponding size based on the size combination of waiting to detect the door and window, can be suitable for the door and window of multiple size.

In order to achieve the above object, an object of the present invention is to provide a combined air collection box, including:

the air inlet side wall of the basic air box body is provided with a first air inlet, the air outlet side wall of the basic air box body is provided with a first air outlet, and the splicing side wall of the basic air box body is provided with a first communication port;

the air inlet side wall of the spliced air box body is provided with a second air inlet, and the spliced side wall is provided with a second communication port;

the exhaust pipe is arranged at the first air outlet of the basic air box body;

the anemoscope is arranged on the exhaust pipe and used for detecting the gas flowing speed in the exhaust pipe;

the spliced air box body is suitable for being spliced and placed on the periphery of the basic air box body, and the second communication port of the spliced air box body is communicated with the first communication port of the basic air box body.

Preferably, at least two different sides of the spliced side wall of the basic air box body are respectively provided with the first communication port, so that the spliced air box body can be spliced on different sides of the basic air box body.

Preferably, at least two different sides of the splicing side wall of the spliced air box body are respectively provided with the second communication port so as to be spliced with the basic air box body and/or the next spliced air box body.

Preferably, the first communication port has a first seal, and the second communication port has a second seal; when the spliced air box body and the basic air box body are spliced and the first communication port corresponds to the second communication port, the first sealing element and the second sealing element are in sealing fit with each other so as to seal the connection position of the first communication port and the second communication port.

According to the utility model discloses an on the other hand, the utility model discloses further provide air infiltration volume detecting system, include:

the auxiliary frame is suitable for being arranged on the periphery of the door and window to be detected;

a static pressure box;

the static pressure box and the first orifice plate are respectively suitable for being arranged on two opposite sides of the auxiliary frame;

the combined air collection box of any one of the above claims, mounted on the outside of the first aperture plate;

and the gas flowing out of the static pressure box sequentially passes through the door and window to be detected and the first pore plate, then enters the combined air collecting box and is discharged through the exhaust pipe of the combined air collecting box.

Preferably, four side edges of the auxiliary frame are respectively telescopic.

Preferably, the auxiliary frame comprises four corner pieces and four connecting rods, the connecting rods and the corner pieces are respectively arranged in a staggered manner, and the end-to-end connection surrounds the periphery of the door window to be detected; and the distance that the connecting rod stretches into the corner piece is adjustable, or the distance that the corner piece stretches into the connecting rod is adjustable, so that the size of the space formed by the auxiliary frame in a surrounding mode can be adjusted.

Preferably, the preset position of the first orifice plate is provided with a sealing part which is arranged in a staggered mode with the vent hole, and the shape of the sealing part is matched with that of the basic air box body and/or the spliced air box body, so that the basic air box body and/or the spliced air box body can be accommodated, and the connection part between the basic air box body and/or the spliced air box body and the first orifice plate is sealed.

Preferably, the top end of the basic air box body and/or the spliced air box body is provided with a fixing hole, and the sealing part of the first orifice plate is provided with a mounting hole; when the top end of the basic air box body and/or the spliced air box body is mounted on the sealing part, the mounting hole corresponds to the fixing hole, so that a fixing piece is allowed to penetrate to fixedly mount the basic air box body and/or the spliced air box body on the first hole plate.

Preferably, the static pressure box is a combined static pressure box, and a second hole plate is arranged between the static pressure box and the door and window to be detected;

wherein the combined plenum box comprises:

the air inlet side wall of the basic static pressure box body is provided with a third air inlet, the air outlet side wall of the basic static pressure box body is provided with a second air outlet, and the splicing side wall of the basic static pressure box body is provided with a third communication port;

the air inlet side wall of the spliced static pressure box body is provided with a fourth air inlet, and the spliced side wall is provided with a fourth communication port;

the air inlet pipe is arranged at the third air inlet of the basic static pressure box body; the air inlet pipe is also suitable for being connected with a fan;

the spliced static pressure box body is suitable for being spliced and placed on the periphery of the basic static pressure box body, and the fourth air inlet of the spliced static pressure box body is communicated with the third air inlet of the basic static pressure box body.

The utility model provides a combination formula air collecting box and air infiltration volume detecting system has following at least one beneficial effect:

1. the utility model provides a combination formula air collecting box and air infiltration volume detecting system, combination formula air collecting box can splice for corresponding size based on the size combination of waiting to detect the door and window, can be suitable for the door and window of multiple size.

2. The utility model provides a combination formula air collecting box and air infiltration volume detecting system, the degree of depth of pegging graft each other between the corner piece that attaches the frame and the connecting rod of combination formula air collecting box can be adjusted, so that attach the frame and can be applicable to the waiting of multiple size and detect door and window, simple structure, the adjustment is convenient.

3. The utility model provides a combination formula air collecting box and air infiltration volume detecting system, combination formula air infiltration volume detecting system's orifice plate has the sealing, can with the tip sealing connection of basic air box and/or concatenation air box, can prevent effectively that the air from leaking from the junction between basic air box and/or concatenation air box and the orifice plate.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.

Fig. 1 is an exploded view of an air permeation quantity detection system according to a preferred embodiment of the present invention;

fig. 2 is an exploded view of a modified embodiment of the air permeation quantity detection system according to the preferred embodiment of the present invention;

fig. 3 is a schematic structural view of an orifice plate of an air permeation quantity detection system according to a preferred embodiment of the present invention;

fig. 4 is a schematic structural view of an auxiliary frame of the air infiltration quantity detection system according to the preferred embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a spliced air box of the air permeation quantity detection system according to the preferred embodiment of the present invention;

FIG. 6 is a schematic view of the connection between the basic air box and the spliced air box of the air permeation quantity detection system according to the preferred embodiment of the present invention;

fig. 7 is an exploded view of a modified embodiment of the air permeation quantity detection system according to the preferred embodiment of the present invention;

fig. 8 is a schematic structural view of a modified embodiment of the orifice plate of the air permeation quantity detection system according to the preferred embodiment of the present invention;

fig. 9 is a flow chart of a method for detecting air permeation quantity of a curtain wall opening fan according to a preferred embodiment of the present invention.

The reference numbers illustrate:

the combined air collection box 1, the basic air box body 11, the spliced air box body 12, the exhaust pipe 13, the anemoscope 14, the first sealing element 151, the second sealing element 152, the fixing hole 16, the auxiliary frame 2, the corner piece 21, the first corner piece 211, the second corner piece 212, the third corner piece 213, the fourth corner piece 214, the connecting rod 22, the first connecting rod 221, the second connecting rod 222, the third connecting rod 223, the static pressure box 3, the basic static pressure box body 31, the spliced static pressure box body 32, the air inlet pipe 33, the first orifice plate 4, the vent hole 40, the sealing part 41, the mounting hole 410, the door and window 5 to be detected and the second orifice plate 6.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Example 1

Referring to specification attached drawings 1 to 8, the utility model provides an air infiltration volume detecting system is elucidated, air infiltration volume detecting system can be applicable to the wait to detect door and window that has multiple size, satisfies the demand that waits to detect the air infiltration volume test of door and window of multiple size, and air infiltration volume detecting system's connected mode is simple, and simple to operate can greatly reduce the cost that air infiltration volume measured.

Referring to the attached fig. 1 of the specification, specifically, the air infiltration quantity detecting system comprises a combined air collection box 1, an auxiliary frame 2, a static pressure box 3 and a first orifice plate 4. The auxiliary frame 2 is suitable for being installed on the periphery of a door window 5 to be detected; the static pressure box 3 and the first orifice plate 4 are respectively suitable for being arranged at two opposite sides of the auxiliary frame 2; the combined air collection box 1 is arranged on the outer side of the first pore plate 4; the gas flowing out of the static pressure box 3 sequentially passes through the door and window 5 to be detected and the first pore plate 4 and then enters the combined air collection box 1 and is discharged through the exhaust pipe of the combined air collection box 1.

Further, the combined air collection box 1 comprises a basic air box body 11, a spliced air box body 12, an exhaust duct 13 and an anemometer 14. The air inlet side wall of the basic air box body 11 is provided with a first air inlet, the air outlet side wall is provided with a first air outlet, and the splicing side wall is provided with a first communication port; the air inlet side wall of the spliced air box body 12 is provided with a second air inlet, and the spliced side wall is provided with a second communication port; the exhaust duct 13 is installed at the first air outlet of the basic air box body 11; the anemoscope 14 is mounted on the exhaust duct 13 and is used for detecting the gas flow speed in the exhaust duct 13; the spliced air box body 12 is suitable for being spliced and placed around the basic air box body 11, and the second communication port of the spliced air box body 12 is communicated with the first communication port of the basic air box body 11.

In the using process, the auxiliary frame 2 is firstly sleeved on the periphery of the door and window 5 to be detected, then the auxiliary frame is arranged on the static pressure box 3 on one side of the door and window 5 to be detected, the first pore plate 4 is arranged on the other side of the door and window 5 to be detected, and then the basic air box body 11 and the spliced air box body 12 are spliced and arranged on the outer side of the first pore plate 4.

It should be noted that the outside of the first orifice plate 4 refers to a side of the first orifice plate 4 away from the door or window 5 to be detected.

In the working process, the utility model provides an air infiltration volume detecting system's gas flow process is as follows: firstly, air is blown into the plenum box 3 through a fan, air in the plenum box 3 sequentially passes through the door and window 5 to be detected and the first pore plate 4 and then enters the basic air box body 11 and the spliced air box body 12, air in the spliced air box body 12 enters the basic air box body 11 after passing through the second communication port and the first communication port, and air in the basic air box body 11 is discharged outwards through the exhaust pipe 13.

Based on the exhaust rate of the gas in the exhaust pipe 13 detected by the anemoscope 14, the amount of the air passing through the door and window 5 to be detected can be detected, so that the air permeation amount of the door and window 5 to be detected can be measured and obtained.

It should be further noted that, referring to fig. 1 of the specification, the air inlet side wall of the basic air box 11 refers to a side wall close to the first perforated plate 4, the air outlet side wall of the basic air box 11 refers to a side wall far from the first perforated plate 4, and the spliced side wall of the basic air box 11 refers to one or more of a left side wall, a right side wall, an upper side wall and a lower side wall of the basic air box 11. Correspondingly, the air inlet side wall of the air box 12 refers to a side wall close to the first orifice plate 4, the air outlet side wall of the air box 12 refers to a side wall far away from the first orifice plate 4, and the splicing side wall of the air box 12 refers to one or more of an upper side wall, a lower side wall, a left side wall and a right side wall.

Alternatively, two adjacent side surfaces of the spliced side walls of the basic air box body 11 are respectively provided with the first communication ports, and two adjacent side surfaces of the spliced side walls of the spliced air box body 12 are respectively provided with the second communication ports. Referring to the attached FIG. 2, one of the basic air boxes 11 is spliced with three of the spliced air boxes 12 to form a square combined air collection box 1. Wherein, three of the spliced air boxes 12 are respectively communicated, and the basic air boxes 11 are respectively communicated with two adjacent spliced air boxes 12.

Alternatively, three or four sides of the joined side walls of the basic air box body 11 are respectively provided with the first communication ports, and three or four sides of the joined side walls of the joined air box body 12 are respectively provided with the second communication ports. It will be understood that the particular manner of splicing between the primary air box 11 and the splice air box 12 should not be construed as limiting the invention.

With reference to fig. 6 of the specification, further, the first communication port of the combined air collection box 1 has a first sealing member 151, and the second communication port has a second sealing member 152; when the joint air box 12 and the basic air box 11 are joined and the first communication port corresponds to the second communication port, the first sealing member 151 and the second sealing member 152 are in sealing engagement to seal the joint of the first communication port and the second communication port, thereby preventing gas leakage at the joint of the first communication port and the second communication port.

Preferably, the first sealing member 151 is a connection pipe seat, and the second sealing member 152 is a connection pipe, and the connection pipe seat is adapted to be inserted into the connection pipe, so that the connection pipe seat and the connection pipe are hermetically connected. Preferably, the connection pipe seat and the connection pipe are respectively made of rubber materials. Optionally, the first sealing element 151 is a connecting pipe, the second sealing element 152 is a connecting pipe seat, and the specific embodiments of the first sealing element 151 and the second sealing element 152 should not constitute a limitation of the present invention.

Referring to the attached figure 3 of the specification, the first hole plate 4 is provided with a plurality of vent holes, and air passing through the door and window 5 to be detected enters the combined air collection box 1 through the vent holes. The first orifice plate 4 is hermetically connected with the joint of the basic box body 11 and the spliced air box body 12 of the combined air collection box 1.

Further, the preset position of the first orifice plate 4 has a sealing part 41, and the shape of the sealing part 41 is matched with the shape of the basic air box body 11 and/or the spliced air box body 12. When the basic air box 11 and/or the spliced air box 12 is mounted to the first orifice plate 4, the top end of the basic air box 11 and/or the spliced air box 12 is adapted to be mounted to the sealing portion 41 to seal the junction between the basic air box 11 and/or the spliced air box 12 and the first orifice plate 4.

Referring to the accompanying fig. 8, a variant of the perforated plate according to the present invention is shown, in which the sealing portion 41 of the first perforated plate 4 is a sealing groove provided with a rubber gasket. Alternatively, the sealing portion 41 can also be a rubber gasket. It will be understood that the specific type of the sealing portion 41 of the first orifice plate 4 should not constitute a limitation of the present invention.

Referring to fig. 8 of the specification, the sealing portion 41 is formed in a gap between adjacent vent holes 40 of the first orifice plate 4 to stagger the basic air tank 11 and/or the joint air tank 12 from the vent holes 40 of the first orifice plate 4, thereby facilitating the sealing connection between the basic air tank 11 and/or the joint air tank 12 and the first orifice plate 4.

Referring to fig. 5 of the specification, the top walls of the basic air box 11 and the spliced air box 12 are respectively provided with fixing holes 16. The sealing portion 41 has a mounting hole 410. When the top end of the basic air box body 11 and/or the spliced air box body 12 is installed in the seal 41, the fixing hole 16 of the top end of the basic air box body 11 and/or the spliced air box body 12 corresponds to the installation hole 410 of the seal 41, so that the basic air box body 11 and/or the spliced air box body 12 is fixedly installed on the first orifice plate 4 through a screw.

Further, the four sides of the auxiliary frame 2 are telescopic, in other words, the size of the auxiliary frame 2 is adjustable. The operator can be based on wait to detect the size adjustment of door and window 5 the size of attaching frame 2, in order to incite somebody to action attach frame 2 install wait to detect door and window 5 all around.

Illustratively, when the size of the auxiliary frame 2 is larger than the size of the door and window 5 to be detected, an operator can adjust the size of the auxiliary frame 2 to reduce the size of the auxiliary frame 2, and install the reduced auxiliary frame 2 around the door and window 5 to be detected. When the size of the auxiliary frame 2 is smaller than that of the door and window 5 to be detected, an operator can adjust the size of the auxiliary frame 2 to increase the size of the auxiliary frame 2 and install the auxiliary frame 2 with the increased size in the door and window 5 to be detected.

Specifically, the auxiliary frame 2 comprises four corner pieces 21 and four connecting rods 22, the connecting rods 22 and the corner pieces 21 are respectively arranged in a staggered manner, and the end-to-end connection surrounds the periphery of the door and window 5 to be detected; and the distance that the connecting rod 22 extends into the corner piece 21 is adjustable, or the distance that the corner piece 21 extends into the connecting rod 22 is adjustable, so as to adjust the size of the space surrounded by the auxiliary frame 2.

Further, the four corner pieces 21 are a first corner piece 211, a second corner piece 212, a third corner piece 213 and a fourth corner piece 214, respectively; the connection rods 22 include a first connection rod 221, a second connection rod 222, a third connection rod 223, and a fourth connection rod 224.

Both ends of the first connecting rod 221 are movably connected to the first corner piece 211 and the second corner piece 212, respectively; both ends of the second connecting rod 222 are movably connected to the second corner piece 212 and the third corner piece 213, respectively; both ends of the third connecting rod 223 are movably connected to the third corner piece 213 and the fourth corner piece 214, respectively; both ends of the fourth connecting rod 224 are movably connected to the fourth corner piece 214 and the first corner piece 211, respectively.

Referring to the description attached drawing 7, the utility model provides an among the deformation implementation mode of air permeability measurement system, static pressure case 3 is combination formula static pressure case, static pressure case 3's size also can be based on wait to detect the size of detecting door and window 5 and carry out the concatenation combination to be suitable for multiple size wait to detect door and window 5.

A second orifice plate 6 is arranged between the static pressure box 3 and the door and window 5 to be detected; the first pore plate 4 and the second pore plate 6 are respectively positioned at two sides of the door and window 5 to be detected.

Specifically, the combined static pressure box comprises a basic static pressure box body 31, a spliced static pressure box body 32 and an air inlet pipe 33.

The air inlet side wall of the basic static pressure box body 31 is provided with a third air inlet, the air outlet side wall is provided with a second air outlet, and the splicing side wall is provided with a third communication port; the air inlet side wall of the splicing static pressure box body 32 is provided with a fourth air inlet, and the splicing side wall is provided with a fourth communication port; the air inlet pipe 33 is installed at the third air inlet of the basic static pressure box body 31; the air inlet pipe 33 is also suitable for being connected with a fan; the spliced static pressure box body 32 is suitable for being spliced and placed around the basic static pressure box body 31, and the fourth air inlet of the spliced static pressure box body 32 is communicated with the third air inlet of the basic static pressure box body 31. It should be noted that the structure of the combined static pressure box is similar to that of the combined air collection box 1, and the structure of the second perforated plate 6 is similar to that of the first perforated plate 4, and the structure of the combined static pressure box and the second perforated plate 6 is not described in detail herein.

Example 2

Referring to the attached drawing 9, according to another aspect of the present invention, the present invention further provides a method for detecting air permeation quantity of a curtain wall opening fan, comprising:

101: an air collecting box is arranged at the outer side part of the curtain wall opening fan to be tested;

102: installing a static pressure box at the inner side part of the curtain wall opening sash to be tested;

103: measuring the additional air permeation quantity of the curtain wall opening fan to be measured;

104: measuring the total air permeation quantity of the curtain wall opening fan to be measured;

105: and calculating to obtain the air permeation quantity of the curtain wall opening fan to be detected based on the total air permeation quantity and the additional air permeation quantity.

It should be noted that, the utility model provides a detection method that fan was opened to curtain sets up respectively through the both sides at the curtain that awaits measuring the air collecting box with the mode of static pressure case can fall additional air infiltration volume to minimum to can improve the accuracy of the testing result of the air infiltration volume of the curtain that awaits measuring.

It should be noted that the air collection box is connected with an exhaust pipe, and an anemograph is installed on the exhaust pipe and used for detecting the amount of gas in the air collection box discharged from the exhaust pipe so as to calculate the air permeation amount of the curtain wall opening fan to be detected. The static pressure box is provided with an air inlet pipe and communicated with a fan, and the fan can blow air into the static pressure box through the air inlet pipe. And the gas exhausted from the static pressure box passes through the curtain wall to be tested, enters the air collecting box and is exhausted through an exhaust pipe of the air collecting box.

Further, in step 103, measuring the additional air permeation quantity of the curtain wall opening fan to be tested includes:

when the opening seam of the curtain wall opening sash to be tested is in a sealed state, supplying air to the static pressure box; the sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested is sealed by a sealing element.

Further, in the step 104, measuring the total air permeation quantity of the curtain wall opening fan to be tested includes:

when the opening seam of the curtain wall opening sash to be tested is in a non-sealing state, supplying air to the static pressure box; the non-sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested does not have the sealing element for sealing.

Further, when the curtain wall that awaits measuring opens the seam of opening of fan and is in encapsulated situation, to static pressure case air feed includes:

preparing pressurization;

applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;

entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;

calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes

And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.

Further, when the crack of opening of curtain wall opening fan that awaits measuring is in non-sealing state, to the plenum chamber air feed includes:

preparing pressurization;

applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;

entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;

calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes

And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.

Further, in step 105, subtracting the additional air permeation quantity from the total air permeation quantity to calculate an air permeation quantity of the curtain wall opening fan to be tested, including:

processing the total air permeation quantity and the additional air permeation quantity to obtain an additional air permeation quantity in a standard state and a total air permeation quantity in a standard state;

subtracting the additional air permeation quantity in the standard state from the total air permeation quantity in the standard state to obtain the air permeation quantity of the opening fan in the standard state.

Specifically, the total air permeation amount and the additional air permeation amount are treated using the following formulas:

using a formula

Calculating the additional air permeation amount under the standard state; wherein q is_f' is the additional air permeation amount in the normal state,

is the total air permeation in the standard state, T is the temperature, g is the gravity constant, and p is the pressure;

using a formula

Calculating the total air permeation amount under the standard state; wherein q is_z' is the additional air permeation amount in the normal state,

is the total air permeation at standard conditions, T is the temperature, g is the gravitational constant, and p is the pressure.

Preferably, T refers to the actual ambient temperature measured and p is the actual pressure of the atmosphere during the measurement.

Further, subtracting the additional air permeation quantity from the total air permeation quantity to calculate the air permeation quantity of the curtain wall opening fan to be tested, and the method further comprises the following steps:

using a formula

Wherein q is_kIs the difference between the total air permeation quantity and the additional air permeation quantity in the standard state, q_l' is the air permeation amount per unit slot length, L is the length of the opening slot of the curtain window to be measured, q_lIs the air permeation per unit seam length under a pressure difference of 10 Pa.

It should be noted that, the utility model provides a measuring method of the air infiltration volume of fan is opened to curtain still includes the measurement before the installation air collecting box the curtain opens the length L of opening the seam of window.

It should be noted that the positive and negative voltages are calculated respectively, and the larger value of the positive and negative voltages is finally taken as the detection result, and the grading can be performed according to GB/T31433-2015 general technical conditions for building curtain walls and doors and windows.

Further, in the step 101, the air collection box is the combined air collection box provided in the above preferred embodiment 1.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. Modular air collection box, its characterized in that includes:

the air inlet side wall of the basic air box body is provided with a first air inlet, the air outlet side wall of the basic air box body is provided with a first air outlet, and the splicing side wall of the basic air box body is provided with a first communication port;

the air inlet side wall of the spliced air box body is provided with a second air inlet, and the spliced side wall is provided with a second communication port;

the exhaust pipe is arranged at the first air outlet of the basic air box body;

the anemoscope is arranged on the exhaust pipe and used for detecting the gas flowing speed in the exhaust pipe;

the spliced air box body is suitable for being spliced and placed on the periphery of the basic air box body, and the second communication port of the spliced air box body is communicated with the first communication port of the basic air box body.

2. The modular air collection box of claim 1 wherein at least two different sides of said mating side walls of said basic air box body have said first communication openings, respectively, to facilitate mating of said mating air box body at different sides of said basic air box body.

3. The modular air collection box of claim 1 wherein at least two different sides of the spliced side walls of the spliced air box each have the second communication port to facilitate splicing with the primary air box and/or the next spliced air box.

4. The combined air collection box of claim 2 or 3, wherein the first communication port has a first seal and the second communication port has a second seal; when the spliced air box body and the basic air box body are spliced and the first communication port corresponds to the second communication port, the first sealing element and the second sealing element are in sealing fit with each other so as to seal the connection position of the first communication port and the second communication port.

5. An air infiltration quantity detection system, comprising:

the auxiliary frame is suitable for being arranged on the periphery of the door and window to be detected;

a static pressure box;

the static pressure box and the first orifice plate are respectively suitable for being arranged on two opposite sides of the auxiliary frame;

the modular air collection box of any of claims 1-4 mounted outside of the first aperture plate;

and the gas flowing out of the static pressure box sequentially passes through the door and window to be detected and the first pore plate, then enters the combined air collecting box and is discharged through the exhaust pipe of the combined air collecting box.

6. The air infiltration capacity detecting system of claim 5, wherein the four sides of the auxiliary frame are respectively retractable.

7. The air permeability detection system of claim 6, wherein the auxiliary frame comprises four corner pieces and four connecting rods, the connecting rods and the corner pieces are respectively arranged in a staggered manner, and are connected end to end around the periphery of the door or window to be detected; and the distance that the connecting rod stretches into the corner piece is adjustable, or the distance that the corner piece stretches into the connecting rod is adjustable, so that the size of the space formed by the auxiliary frame in a surrounding mode can be adjusted.

8. The air infiltration capacity detection system of claim 5, wherein the predetermined position of the first orifice plate has a sealing portion offset from the vent, the sealing portion having a shape adapted to the shape of the basic air tank and/or the splice air tank for receiving the basic air tank and/or the splice air tank to seal the connection between the basic air tank and/or the splice air tank and the first orifice plate.

9. The air infiltration capacity detection system of claim 8, wherein the top end of the basic air box body and/or the spliced air box body is provided with a fixing hole, and the sealing part of the first orifice plate is provided with a mounting hole; when the top end of the basic air box body and/or the spliced air box body is mounted on the sealing part, the mounting hole corresponds to the fixing hole, so that a fixing piece is allowed to penetrate to fixedly mount the basic air box body and/or the spliced air box body on the first hole plate.

10. The air infiltration capacity detection system of any one of claims 5-8, wherein the plenum box is a combined plenum box, and a second orifice plate is arranged between the plenum box and the door or window to be detected;

wherein the combined plenum box comprises:

the air inlet side wall of the basic static pressure box body is provided with a third air inlet, the air outlet side wall of the basic static pressure box body is provided with a second air outlet, and the splicing side wall of the basic static pressure box body is provided with a third communication port;

the air inlet side wall of the spliced static pressure box body is provided with a fourth air inlet, and the spliced side wall is provided with a fourth communication port;

the air inlet pipe is arranged at the third air inlet of the basic static pressure box body; the air inlet pipe is also suitable for being connected with a fan;

the spliced static pressure box body is suitable for being spliced and placed on the periphery of the basic static pressure box body, and the fourth air inlet of the spliced static pressure box body is communicated with the third air inlet of the basic static pressure box body.

Images