KR20010106431A - Apparatus and method for testing an impervious surface - Google Patents

Abstract

The present invention is an impermeability testing device for confirming whether a surface is impermeable to a requirement and includes a liquid outlet for directly spraying liquid toward the surface and a flow generator for generating airflow toward the surface, The generator can simultaneously inject liquids and airflow directly onto the test surface.

Description

[0001] Apparatus and method for testing an impermeable surface [0002]

The exterior surface of the building is made of impermeable barrier that blocks environmental factors such as rain and wind.

Unfortunately, the structure does not fully exhibit such functions as impermeability.

Therefore, the above results lead to the structure and function of the insolvent, resulting in an improper design.

The way to make a test surface with weatherproofing is shown in the standard of A.A.M.A501.2 (American Aluminum Manufacturing Federation).

The test is that the tester uses a garden hose to spray water on the surface of the building structure.

The above A.A.M.A501.2 standard specifies the hose specification and water pressure, but the user only sprays water back and forth over the surface for 5 minutes.

Therefore, depending on how the user handles the hose, injecting water onto the surface can not be a perfect test.

Therefore, such a test does not sufficiently simulate the effects of rain and wind.

As a result, this test also can not simulate the synergy of wind and rain that occurs in nature.

More complete equipment and test methods are specified in A.S.T.M.E1105 (American Society for Testing and Materials).

In tests simulating external pressures exerted by the wind, the A.S.T.M test defines a chamber structure mounted in a position to withstand external and internal surfaces.

A common area between the chamber and the surface is sealed so that the interior of the chamber is pressurized.

When the chamber is installed outside the surface, the pressure in the chamber is increased by the air pressure supplied to the chamber.

With this pressure, the outer surface can withstand the simulated wind pressure.

Optionally, the chamber may be provided on the inner surface, wherein the pressure of the chamber is reduced by the exhausted air in the chamber where suction is generated at the surface.

The suction force simulates the effect of wind on the surface, except for the force acting on the simulated surface by the suction force on the inner surface rather than the pressure on the outer surface.

In other cases, the air pressure or suction force is varied to periodically simulate the intermittent wind effect.

However, the periodic pressure change can not be equal to the turbulent effect of wind blowing on the surface.

Moreover, it is difficult to spray water on the same side of the surface of the chamber that has been subjected to air in the chamber when the chamber is sealed, or when the liquid ejection apparatus is placed in the closed chamber.

It is time and costly to install a sealed chamber with a rugged surface, and it is inconvenient to move the chamber to another test location.

In particular, it is inconvenient to assemble multiple chambers to test a huge flat curtain wall (such as a window in a high-rise building).

It is an object of the present invention to overcome and overcome the disadvantages of the prior art.

The present invention relates to a test apparatus suitable for testing impermeable surfaces in accordance with the specification and is applied to a test apparatus for testing the surfaces of buildings and other building structures to withstand rain and wind.

The present invention also relates to a method for testing a test surface using the test apparatus.

To extend the understanding of the present invention, embodiments will be described with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional perspective view showing an embodiment of a test apparatus for testing an impermeable surface. FIG.

2 is a side cross-sectional view showing the embodiment of Fig.

3 is a front view showing the embodiment of Figs. 1 and 2. Fig.

Fig. 4 is a map showing a method of directly spraying airflow and liquid on a test surface.

Fig. 5 is a coupling diagram for coupling a blocking ring partially blocking the air introduced into the air inlet, according to another embodiment of Fig. 2;

6 is an embodiment of a test apparatus equipped with a flow generator and an auxiliary generator.

7 is another embodiment according to the present invention.

Figure 8 is another embodiment of Figure 7 supported on a stand.

The drawings are not drawn to scale or enlargement at a certain ratio, and do not fill dimensions essential to the present invention.

In the drawings of the embodiments, the same reference numerals are inserted for the sake of brevity.

This implies that the above embodiment does not require the same design.

The present invention relates to an apparatus for impermeable surface testing, comprising: a liquid outlet connected to a liquid source, the liquid outlet being adapted to inject liquid towards the test surface;

And a flow generator suitably mounted to generate an airflow toward the test surface, wherein the liquid outlet and the flow generator are simultaneously sprayed with a liquid and an air stream on the same surface to ensure that they meet the actual specifications of the impermeable surface To provide a test device that can be

In addition, the test apparatus is provided as a reaction means suitable for reacting to the force generated by the airflow acting on the test surface.

At this time, the reaction means is an auxiliary flow generator for generating a secondary air flow which can react.

On the other hand, when the test apparatus is positioned close to the test surface, it responds to the force of the airflow at the flow generator acting on the test surface that is balanced by the suction force of air introduced into the auxiliary flow generator.

The reaction means is also a flow generator which provides an air intake port through which air flows into the test apparatus and an air outlet port which is an outflow passage of the air stream injected from the test apparatus toward the test surface.

When the test apparatus is positioned close to the test surface, the amount of air flowing into the inlet and the amount of air flowing through the outlet are balanced in terms of the quantity of the apparatus.

While the liquid and the air stream are injected directly toward the test surface, the test apparatus is in equilibrium with the mass of the test apparatus as if it could maintain a balance with respect to the test surface.

The air inlet and the air outlet are such that when the test apparatus is positioned close to the test surface, a portion of the air stream exiting the outlet towards the test surface is reintroduced into the test apparatus through the air inlet.

The inlet is mounted so that air is introduced into the apparatus in a direction opposite to the airflow direction through which the air is vented.

The air inlet and the air outlet are located on the same side of the device.

The air circulated through the air inlet is redirected toward the air outlet.

The air inlet is surrounded by an air outlet and the air outlet is intensively mounted within the air inlet.

The position of the air outlet relative to the air inlet is adjusted so that it can come close to or away from the test surface.

Optionally, the air outlet is surrounded by an air inlet and the air inlet is also intensively vented into the air outlet.

The air inlet and the air outlet have a circular cross-sectional shape.

The air inlet is composed of one or more ducts.

The flow generator includes a rotating rotor.

The air flow generator is mounted in the air outlet.

Optionally, the air flow generator is also mounted in the air inlet.

The liquid outlet is located in the interior of the air outlet and in the passageway, such that liquid can be injected onto the test surface by the airflow exiting the air outlet.

The inclined surface may also be provided by a combination of an air inlet and an air outlet which direct the flow of air from the inlet to the outlet.

The device is also provided as a means for increasing the static pressure in the device.

The means for increasing the static pressure is provided in the form of a gap formed in the surface of the device.

At the air inlet and the air outlet, the clearance is through and scaled with the outside air of the apparatus.

The device comprises a shut-off device for spraying a portion of the air to an external common area of the device to provide a buffer zone in the common area, and a shut-off device located in the common area of the air exiting the air inlet and the air exiting the air outlet / RTI >

The device can be carried or suspended.

Optionally, it may be supplied to a control device, such as a regulating valve device, for controlling the amount of liquid injected through the liquid outlet.

The liquid outlet includes one or more nozzles.

Optionally, the liquid outlet is also in the form of a narrow and long slit.

Another aspect of the invention, i. E., The impermeable side, provides a test method.

The location of the test apparatus proximate to the test surface; And a step of simultaneously spraying the liquid and the air stream toward the same test surface to confirm the impermeability standard of the test surface.

In the method, the apparatus is configured such that a substantial portion of the airflow is supplied to the test surface, such that the amount of air entering and exiting is in a state of mass balance that maintains the equilibrium position while spraying the liquid and air against the test surface, Is positioned proximate to be evacuated from the apparatus toward the test surface re-entering the apparatus through the inlet.

The word test surface does not mean plane.

The present invention is useful for testing cracks and joints in non-planar building structures.

The term impermeability of the test surface does not imply that the test surface is completely waterproof and airtight.

The present invention is limited to a special specification of impermeability.

The standard for impermeability is that it has been treated with a special design.

For example, the present invention allows a building designer to test whether a test surface meets the standard.

Fig. 1 is a representative view of a test apparatus for impermeable surface test, Fig. 2 is a side sectional view, and Fig. 3 is a front sectional view.

Here, reference numeral 10 denotes a test apparatus, which is suitable for testing an impermeable surface.

Figure 4 shows the operating condition of the test apparatus with the apparatus positioned close to the test surface 15. For the test of the test surface 15 to withstand the rain and wind, You can simulate these two factors, such as wind.

Wind simulation

The device 10 also has an airflow generator designed and arranged to generate an airflow towards the surface 15 so that it can be simulated with respect to the wind. In this embodiment, the air flow generator is comprised of a number of parts to provide a means for directing air flow towards the surface 15. [

The air flow generator is provided with an air inlet for introducing air into the apparatus and an air outlet for allowing air flow to be directed from the apparatus toward the surface 15. [ In this embodiment, the air inlet and the air outlet are formed and defined by the housing structure of the apparatus 10. [

The apparatus of this embodiment includes a passageway containing one passageway therein. 2 to 4, the inlet passage 60 is used as an air inflow portion located between the inner surface of the outer housing 65 and the outer surface of the inner housing 75. [ The inner surface of the inner housing 75 surrounds the air discharge passage 70 used as an air discharge portion. Thus, preferably, the air inlet is arranged to surround the air outlet, and the air outlet is arranged coaxially within the air inlet as in the embodiment. Although not preferred, an arrangement may be used in which the air outlet surrounds the air inlet in the opposite manner, but in this case preferably the air inlet is arranged coaxially within the air outlet.

In the embodiment of FIGS. 1 to 4, the air inlet and the air outlet are shown to have a circular cross-sectional shape. However, since the actual cross-sectional shape does not limit the function of the device, the present invention does not limit the design to have a circular shape. The cross-sectional shape of the air inlet and the air outlet may be optionally a square cross-section, a rectangular cross-section, or any other suitable shape.

In this embodiment, the air inlet passage 60 is formed of one cylindrical duct. However, it is conceivable that the air inlet is made up of one or more individual ducts that work together to form an air inlet into which air can flow into the device.

In this embodiment, the air flow generator includes a diesel motor 40 that drives the rotatable rotor 50 as a means of generating an air flow. Other types of motors or engines may be used. Further, the motor may be operated by receiving electricity as power. 2, the air flow generator is mounted in the air discharge passage 70 in the form of a motor 40. As shown in Fig. The air flow generator provides a motive force to move the air passing through the device. In other embodiments, the air flow generator may be mounted in the air inlet to provide the same mobility for movement of air through the device. In yet another embodiment, the air flow generator may be such that the rotational speed of the rotor is variable. The A / C motor is ideally adapted for variable speed applications. The variability in the rotational speed of the rotor is useful for simulating changes in wind speed. In the embodiment shown in FIGS. 1 and 6, propellers with twin blades are used, and the propeller can be replaced by a multi-blade propeller that produces a stronger airflow for use in any application.

Non-simulation

The apparatus 10 is provided with a liquid outlet which can be connected to a liquid supply source (not shown), so that simulation of the ratio can be performed. In an embodiment of the invention, the liquid outlet is in the form of a spray nozzle 20. These spray nozzles are located in a narrow duct 30 disposed across the opening of the test apparatus 10. The elongated duct 30 is best seen in the perspective view of FIG. The duct 30 may be connected to a liquid supply source, which may be a hose connected to a nearby tab. The duct may be connected directly to the liquid source or indirectly through the intermediate connection part. The liquid source, i. E., The water source, may be an external source or a separate water tank specially adapted to provide the necessary source of liquid. The liquid outlet is modified and arranged to direct liquid from the liquid source toward the surface to simulate the effect of spraying on the surface.

The liquid spray generated from the spray nozzles 20 is shown in FIG. 4 as a dotted line extending from the duct 30 through the respective nozzles 20.

The spray nozzle 20 is located in or on the path of the air discharge passage 70 so that the liquid can be guided to the surface by the flow of air spreading out from the air discharge portion.

The liquid discharge flow rate through the liquid outlet can be varied either manually by adjusting the liquid source by means of a tap or through the use of an electromechanical regulator (not shown). For example, an adjustable valve mechanism may be provided to regulate the amount of liquid injected through the liquid outlet. The valve mechanism may be used with a pressure gauge to regulate the amount and force of water sprayed through the spray nozzle 20, or the amount of water, or the force of water. The valve mechanism may take any form or configuration as long as it can provide the above-mentioned functions.

Because the rain does not drop to a certain amount, this function, which can change the liquid discharge or control the liquid discharge, allows the simulation to be performed according to various conditions of the rain using the apparatus. In addition, a timing device or an electrical control circuit may be used to regulate the flow rate variation of the liquid or air generated from the testing device.

Simultaneous simulation of rain and wind

The device 10 can simultaneously direct liquid from the liquid outlet and airflow generated by the airflow generator to the target surface. Thus, the device is able to simulate the synergistic effect of wind and rain hitting the surface at the same time as it actually occurs.

Of course, the device may also direct the liquid or air stream separately to the surface. However, it is important that the device has the ability to simultaneously direct air and water to simulate the synergistic effect of wind and rain hitting the surface simultaneously.

Movement of air through the device

4, the movement of the air passing through the air inlet passage 60 and the air outlet passage 70 is shown by a dotted line. In this embodiment, the air inlet allows air to enter the device in a direction substantially opposite to the direction of the air flow exiting through the air outlet. The air inlet and the air outlet are located on the same side of the device.

4, the air moves to the left through the air inflow passage 60, and then is returned to the " U " shape and is again directed to the right through the air outflow passage 70. [ Accordingly, the movement of the air through the air inlet is reversed in order to be discharged through the air outlet. As shown in FIGS. 2 and 4, the inclined surface 80 is provided at the connection portion between the air inlet and the air outlet to guide the flow of air from the air inlet to the air outlet. The role of the inclined surface is to minimize the turbulence of the air that is reached from various portions of the air inlet passage 60 and merged together at the rear of the device 10. [

In the embodiment of Figures 1 to 4, the flow of air through the air flow generator is essentially directed through the air inlet and out through the air outlet along the straight path. There is no convolution in the air inlet portion 60 or the air outlet portion 70. However, in another embodiment, it may also include an air inlet and an air outlet, or an air inlet, or a condensation at an air outlet for the purpose of regulating the flow of air, as required in a particular design.

Controllability of air outlet to air inlet

The air discharge portion can be positioned relative to the air inlet portion. With reference to Fig. 2, the inner housing 75 is supported by the support means 67 fastened at a predetermined position using a bolt and a nut so as to be adjustable in the outer housing 65. Fig. Thus, the inner housing 75 can be selectively positioned along the longitudinal axis of the outer housing 65. This adjustability allows the air outlet 70 during use to be closer to or further away from the object surface 15 with respect to the air inlet. For example, when the inner housing 75 is located closer to the opening of the outer housing 65 (i.e., closer to the right side of the drawing) ), So that a stronger force can be applied to the surface by the air flow. Likewise, the air outlet may be farther into the outer housing 65 (i.e., further to the left of the figure), which weakens the force of the airflow exerted on the surface in use. This relative positioning of the air outlet to the air inlet allows the user to vary the force of the air flow guided to the surface.

In yet another embodiment, more improved means for adjusting the position of the air outlet relative to the air inlet can be used. For example, the inner housing 75 can be moved within the outer housing using a rack and pinion gear system, which allows the components to be moved somewhat more gradual than a stepwise amount without the need to disassemble the entire device .

Location stability of the device in use

When constructed in a sufficiently compact housing and composed of sufficiently lightweight components, embodiments of the present invention have the particular advantage of being portable or easily portable. In addition, the above embodiment of the device can be supported on any kind of stand. However, the above embodiments, which can be portable, or at least easy to hang or carry, have a particular advantage because they have a large surface area in many cases of the surfaces of the buildings being tested. For example, a massive flat outer wall of a glass-roofed surface of a skyscraper must be tested for weather-resistant properties.

In some implementations, particularly lightweight, portable, and / or hangable, some problems arise in the operation of inducing airflow to the surface due to the airflow causing the device to fall off the surface. This occurs because the reaction to the force generated by the airflow acting on the surface has a tendency to cause the device to fall off the surface. This problem occurs particularly in devices that induce very strong airflow towards the surface and / or are light enough to be sufficiently impacted by the reaction to the forces of the airflow. Thus, in the above embodiments of the invention, the device must be provided with a countermeasure means adapted to counteract the reaction to the force generated by the airflow acting on the surface.

In the embodiment of FIG. 1 to FIG. 4, an air inlet passage 60 into which air enters into the apparatus and an air outlet passage 70 through which the air flow is guided from the apparatus to the surface 15 are provided in the air flow generator Is the canceling means. The cancellation effect of this arrangement can be explained as follows. That is, when the device is located near the surface, the force of the air flow coming out of the air discharge passage 70, i.e., the force applied on the surface, is actually balanced with the suction force generated by air entering the device through the air inlet passage . In this embodiment, the suction force is achieved because the amount of air entering the air inlet and the amount of air exhausted through the air outlet form a dynamic mass or flow balance within the apparatus, While maintaining the overall equilibrium position relative to the surface.

The term 'global equilibrium' is used because the system is dynamic, and from a practical point of view, equilibrium devices are not absolutely inactive. The intent of the offset effect is simply to avoid the possibility of the device falling off the surface. When the device is suspended, it is not permissible for the device to come off the surface. After falling from the surface, gravity causes the device to turn back toward the surface or to collide with the surface, which results in damage to the device and the surface, or the device or surface.

Two situations can be tolerated. The first desirable situation is that a balance of dynamic forces emerges from the mass balance so that the suspended device is able to maintain its overall mold position in front of the surface. The second situation, which may be acceptable in some situations, is that the suction force of the device is greater than the reactive force of the airflow acting on the surface. While the air flow and the liquid, or the air flow or liquid, is directed to the surface, the device will be pulled to the surface and will come to rest against the surface. However, the contact between the device and the surface may not be desirable if such contact causes damage to the surface, for example in the case of a windscreen surface that requires close attention.

The balance of the dynamic flow can be understood by using the following basic equations.

A _o V _o = A _i V _i

Where, A _o is the cross-sectional area of the air discharge passage (㎡), A _i is the cross-sectional area (㎡), V ₀ is, the speed V _i (m and s ^-2) of the air flow leaving the air discharge passage of the air introduction passage air (M s ^-2 ) of the air entering the inflow passageway.

Here, the subscript 'i' relates to the state of the inlet passage, while the subscript 'o' relates to the state of the outlet.

Corresponding to the flow balance, the mass balance is defined as follows.

ρA _o V ₀ = ρA _i V _i

Where p is the density of the air. In use, when the mass balance is practically achieved, the apparatus can maintain an overall positional balance adjacent to the surface. The ultimate goal is to prevent the reaction to forces generated by the airflow acting on the surface from moving the device away from the surface.

The pressure P varies with speed according to the following equation.

P = 1/2 ρV ²

Now, the general formula for the force (F) is as follows.

F = A P

Therefore, the force externally applied at the air outlet (F _o ) is calculated as follows.

F _o = A _o P _o

In addition, the force applied to the inside of the air inlet is calculated as follows.

F _i = A _i P _i

Therefore, the force difference, ΔF, is calculated as follows.

ΔF = F _o - F _i = A _o P _o - A _i P _i

Considering the total force exerted on the device itself, ΔF is the resulting total force. The values of Pi, Po and DELTA F can be adjusted by varying the rotational speed of the rotor and the size of the opening of the adjusting hole, or the size of the opening of the adjusting hole or the rotational speed of the rotor, and will be described below.

In practice, when a mass balancing of the gross equilibrium is made such that the device does not move away from the surface, since the balance of the total force must take into account other effects such as the effect due to the gravity of the device itself, It is usually not zero. However, when the overall equilibrium is achieved, there is an overall overall force balance in the resulting total force acting in the system.

It is not necessary that the inwardly acting force F _i is generally equal to the outwardly acting force F _o . As mentioned above, in some cases it may be acceptable that the suction force of the device is greater than the reaction force of the airflow acting on the surface. In such a case, while the air flow and the liquid, or the air flow or the liquid, are directed toward the surface, the device strikes the surface or strikes the surface.

The coefficient of the pressure P is affected by the power of the motor 40 because the pressure is proportional to the velocity of the air. The cross-sectional area A is determined by the size of the apparatus. In the actual design of the specific embodiment according to the invention, the shape of the components serves to influence the flow of air through the passages of the airflow generator, so that the mathematical formulas can only be obtained when the device is in an overall state of equilibrium It only provides a guide on how the overall size of the device can be calculated to allow it to be calculated. Depending on the particular application in which the device may be used, some experimentation may be required to determine the size and power of the motor.

Overall, the conditions of the air flow are such that when the mass balance is actually achieved, the device can be maintained at a position of total equilibrium adjacent to the surface mentioned above, while the liquid and air flow are directed towards the surface.

4, a substantial amount of air leaving the air discharge passage 70 is again introduced into the apparatus 10 through the air inlet passage 60. As shown in Fig. This recycling movement of air in the apparatus is shown in dashed lines in Fig. However, since the device 10 is not sealed from the atmosphere, some of the air entering the air inlet passageway 60 may be from the ambient atmosphere.

The liquid ejected from the nozzle 20 is not sucked back into the apparatus through the air inlet passage in an actual amount. However, it would be desirable for the motor or engine 40 to be structurally weatherproof if the particular embodiment is designed with parameters that cause the liquid to reach the surface 15 and then actually be sucked back into the device.

In use, the apparatus 10 is disposed adjacent the surface 15 and is used to simultaneously direct liquid and air flow to the same side of the surface. A person will check the surface to see if it has achieved the required degree of weather resistance by looking for rain and wind leaks on the other side of the surface.

In the use of this embodiment, the amount of air entering the device and the amount of air exhausted from the device can be in mass balance in the device while the liquid and air flow are being guided toward the surface, The device is positioned sufficiently close to the surface so that a portion of the airflow exiting the device from the surface into the device again through the air inlet to maintain the overall equilibrium position. The actual distance of the device from the surface will depend on the power of the motor 40 and the degree of effectiveness of the suction effect achieved by the particular design of the embodiment. Some experimentation will be needed to determine the desired distance between the device 10 and the surface 15 to be spaced apart. Also, as mentioned above, the suction force will have to be sufficient for the device to be sucked on the surface so that the device can be stopped adjacent to the surface while air and liquid are being guided over the surface.

Increase in internal static pressure

The equation of force difference ΔF is:

ΔF = F _o - F _i = A _o P _o - A _i P _i

The equation takes into account the dynamic pressure of the moving air.

However, the above equation can be more accurate in consideration of the _static pressure P _static in the apparatus and the external atmospheric pressure P _atm of the apparatus as follows.

_{ΔF = A o (P o +} P static) - A i (P i - P static) - (A o + A i) P atmos

As an embodiment of the present invention, the _static pressure P _static in the closed system is a negative value, i. _E., Less than the atmospheric pressure P _atmos .

Therefore, depending on the effect of the static pressure below the atmospheric pressure,? F is reduced, thereby causing a suction force to pull the device toward the surface.

Changing the internal static pressure affects the suction force.

The ΔF is the total resultant force of all the forces acting on the device, which depends on the difference between the _static pressure P _static and the atmospheric pressure P _atmos , and the force F _o exerted on the surface by the air flow depends on the static pressure P _ststic .

In addition, the static pressure P _ststic can affect the force F _o of the air flow represented by the following equation acting on the surface.

F _o = A _o (P _o + P _static )

In order for F _o to be maximized, i. E. To maximize the force of the airflow acting on the surface 15, one way would be to increase the static pressure in the device to maximize the force.

First, as an embodiment of the present invention, the static pressure in the closed system should be a negative value, that is, a value below the atmospheric pressure.

Accordingly, a plurality of holes are opened, the size thereof is increased, the internal static pressure P _static is raised, and at this time, the external atmospheric pressure of the apparatus is approached.

Accordingly, the internal static pressure P _{static is} equal to or greater than the internal static pressure P by the plurality of openings in the open state. This elevated _static pressure P _static also increases the force F _o acting on the surface.

Using this principle, means for increasing the static pressure are provided in the apparatus of the present invention.

The means for increasing the static pressure is provided in the form of a plurality of openings on the surface of the device.

The plurality of openings allows air at the air inlet and at the air outlet to communicate with ambient air outside the apparatus.

In FIG. 2, the openings, holes, or openings 100 on the device surface are exposed to the atmosphere, increasing the _static pressure P _static in the device when open.

Therefore, the force applied to the surface can be increased by the opening in the open state as the internal static pressure P _static increases.

As the opening 100 is equipped with a mechanism for adjusting its size, the sum of static pressures and the force of the air flow can be changed.

Since the internal static pressure P _static is only increased to the level of the atmospheric pressure P _atmos , the adjustment of the force applied to the surface does not affect the equilibrium or state of the overall position of the device relative to the surface.

The characteristic that depends on changing the internal static pressure is not applicable as an embodiment of the present invention without being met in a closed system.

In another embodiment

Fig. 5 shows another embodiment in which the embodiment of Figs. 1 to 4 is modified.

As another embodiment, a block device of the same shape as the circumferential blocking ring 90 is provided. Figure 5 shows the ring 90 in cross-section.

The blocking ring 90 is composed of two ring members 95A and 95B having the same centering.

The blocking ring 90 is installed along an area where air can flow from the air discharge path 70, and allows the air flowing into the air inflow path 60 to flow quickly.

The blocking ring receives the incoming air and at the same time discharges a portion of the air outside the device through a small passage 97.

When a part of the air flows in a reverse direction from a narrow area which is a shared area of the inflow and outflow air, the blocking ring serves as a buffer area in the shared area of the inflow and outflow air.

The blocking ring is exposed to the atmosphere by a passage 97.

Therefore, as a result of approaching the inner part of the apparatus to the atmosphere, the internal static pressure P _static is raised as described above, and thus the force of the air flow applied to the surface F _o can be increased.

The neutralization means, shown as another embodiment in FIG. 6, is in the form of an auxiliary flow generator, which generates an auxiliary air flow to neutralize the action on the force of the main motor 40.

The auxiliary flow generator is mounted as an auxiliary motor 40A.

When the apparatus of FIG. 6 is positioned close to the surface, the repulsive force against the force of the air flowing from the motor 40 to the surface is balanced by the flow of air generated by the auxiliary motor 40A, that is, .

The liquid from the duct 30 is jetted toward the surface simultaneously with the air flow.

In this embodiment of the invention, a balance of force is used to balance the position of the proximate device of the surface, not in the enclosure.

The device of the present invention is particularly applicable to testing the waterproofing properties of the surface of a building or an architectural structure.

The apparatus is used for standardized testing and can standardize parameters such as the rate of air flow and the liquid discharge rate.

The user of the device does not always need a device to maintain a parallel position.

In some operations, the apparatus of the present invention, which can be gripped by a user's hand or rigidly mounted on a support object, is required, and a device for changing the air flow toward the surface and spraying the liquid is required.

Although embodiments of the present invention have been described with respect to impermeable surfaces, the degree of impermeability to the surfaces of buildings and houses does not always need to be evacuated, but can have a high degree of impermeability to rain and wind have.

The appropriate level of impermeability can be determined by the architectural design and the installer.

Embodiments of the present invention may also be used to test buildings that can block rain and wind, such as roofs, for example.

The roof serves to substantially block rain, but the role of blocking wind is a sealed window.

The degree of impermeability for the roof is resistance to wind and rain set by the manufacturer.

In this regard, embodiments of the present invention may be useful for testing resistance to wind and rain of such architectural structures.

Other Implementations

FIGS. 7 and 8 illustrate another embodiment of the present invention, wherein the apparatus according to this embodiment can simulate rain and wind when necessary.

The device is mounted with a flow generator in the form of a blower (200). The blower 200 is connected to an air outlet in the form of a duct 210.

The opening of the duct 210 has a long and narrow height. The substantial length of the opening has a length such that the liquid is injected into the duct, and the injection is applied to a large area.

However, as the width of the duct is narrow, the ejection of the liquid emitted from the duct is maintained at a constant pressure and speed. The duct 210 is formed in a narrow and long slit shape.

Although only one slit is provided in this embodiment, one or more slits may be formed.

The blower and the duct are connected by a flexible hose 220 to allow air to flow from the blower to the outside of the duct.

At the end of the duct 210, a liquid discharge port in the form of an opening 230 is formed.

The opening 230 is connected to a liquid source such as a tap or a compressed water source (not shown).

In this embodiment, the openings 230 and the blower 200 can flow liquid and air simultaneously or individually toward both sides of the surface to test surfaces having water and wind resistance characteristics.

An advantage of this embodiment is that the manufacturing cost is very low and it is easily transportable.

FIG. 8 shows that this embodiment is supported by the support stand 240, and may also be fixed on a predetermined place.

Also, the above embodiment can be used on the support when used.

Preferably, the support includes an attachment system, which allows the support to be mounted to an external support, such as, for example, an outer frame, gondola, or other platform. The shape and shape of the attachment system may vary depending on the external support. Thus, this embodiment is not limited to the particular shape and shape of the attachment.

This embodiment is particularly useful as long as the device is not removed, and the device can be attached to an external support, such as a movable platform, to be easily transported to a desired location for use.

The embodiments of the invention have been described by way of example only and are capable of modifications within the spirit and scope of the invention as defined by the appended claims.

Claims (38)

Devices used to test the impermeable surface are: A liquid discharge port adapted to be connected to a liquid source for spraying liquid from the liquid source toward the surface; And a generator for flow generation adapted and arranged to generate an air flow towards said surface, Wherein the liquid outlet and the flow generating generator are capable of simultaneously directing a flow of liquid and air toward both sides of the surface in order to ascertain the actual degree of impermeability of the surface. Device. The apparatus of claim 1, wherein the apparatus comprises neutralizing means for neutralizing the repulsive force of forces generated by airflow acting on the surface. 3. The apparatus of claim 2, wherein the neutralizer is an auxiliary flow generator that generates an auxiliary air flow to neutralize the repulsive force. 4. The method of claim 3, wherein, when the device in use is close to the surface, the repulsive force of the air flow force flowing from the flow generator to the surface causes an equilibrium by the suction force generated by the air flowing into the auxiliary flow generator. Wherein the surface is impermeable to the impermeable surface. 3. The apparatus of claim 2, wherein the neutralization means is a flow generator mounted at an air inlet into which air is introduced into the apparatus and an air outlet from the apparatus to the surface. 6. The method of claim 5, wherein, when the device in use is close to the surface, the repulsive force of the air flow force acting on the surface is balanced by a suction force generated by the air introduced into the device through the air inlet ≪ / RTI > 7. A method according to claim 5 or 6, wherein when the device in use approaches the surface, the total amount of air flowing into the inlet and the total amount of air flow discharged through the outlet become mass equilibrium in the device, Wherein the device is capable of maintaining a position parallel to the surface and at the same time the flow of liquid and air can be directed towards the surface. 8. A device according to any one of claims 5 to 7, wherein the air outlet and the air inlet are arranged so that when the device is placed in close proximity to the surface, a part of the air flow exiting the air outlet towards the surface is introduced into the device through the air inlet Characterized in that it is adapted and arranged so as to permit re-inflow. The apparatus of any one of claims 5 to 8, wherein the inlet is arranged in a direction opposite to a flow direction of the air discharged through the air outlet so that air can be introduced into the apparatus. Apparatus for testing surfaces. 10. The apparatus of claim 9, wherein the air inlet and air outlet are located on the same side of the apparatus. 11. An apparatus for testing an impermeable surface according to any one of claims 5 to 10, characterized in that the air moving through the air inlet is countercurrent so that it can be discharged through an air outlet. 12. Apparatus according to any one of claims 5 to 11, characterized in that the air inlet surrounds an air outlet. 13. The apparatus of claim 12, wherein the air outlet is located at the same center in the air inlet. A device according to any one of claims 5 to 13, characterized in that the position of the air outlet is adjustable with respect to the air inlet, allowing the air outlet to be moved away from or close to the surface . 12. Apparatus according to any one of claims 5 to 11, characterized in that the air outlet surrounds the air inlet. 16. The apparatus of claim 15, wherein the air inlet is located at the same center in the air outlet. 17. The apparatus of any one of claims 5 to 16, wherein the air inlet and the air outlet are formed in a circular cross-section. 18. An apparatus according to any one of claims 5 to 17, wherein the air inlet is comprised of one or more ducts. 19. Apparatus according to any one of claims 5 to 18, characterized in that the flow generator is a rotatable rotor. 20. Apparatus according to any one of claims 5 to 19, characterized in that the air flow generator is mounted in an air inlet. 20. Apparatus according to any one of claims 5 to 19, characterized in that the air flow generator is mounted in an air outlet. 22. A method according to any one of claims 5 to 21, characterized in that the liquid outlet is located on the path of the air outlet so that the liquid can be directed towards the surface by the air flow emitted from the air outlet Apparatus for testing a permeable surface. 24. A method according to any one of claims 5 to 22, characterized in that an inclined surface is formed at the connection point between the air inlet and the air outlet so as to guide the flow of air from the inlet to the outlet, Apparatus for testing. 24. Apparatus according to any one of claims 1 to 23, characterized in that the apparatus comprises means for increasing the static pressure in the apparatus. 25. The apparatus of claim 24, wherein the means for increasing the static pressure is an opening formed in a surface of the apparatus, the opening allowing air in the air inlet and outlet to communicate with atmospheric air outside the apparatus, Is adjustable. ≪ Desc / Clms Page number 13 > 26. The apparatus according to any one of claims 5 to 25, wherein the apparatus comprises a blocking device located in a shared area between an air inlet through which the air is introduced and an air outlet from which the air is discharged, Wherein the air in the shared area is directed to the outside of the aperture so that the air in the shared area can be directed to the outside of the aperture. 26. Apparatus according to any one of claims 1 to 26, characterized in that the apparatus is portable and can be placed in a predetermined position. 26. Apparatus according to any one of claims 1 to 26, characterized in that the apparatus can be supported by a support. 29. The apparatus of claim 28, wherein the support comprises an attachment system such that the support can be mounted to an external support. 32. A device according to any one of claims 1 to 29, characterized in that the device comprises a control device of a variable valve mechanism adapted to control the total amount of liquid sprayed through the liquid outlet. Device. 32. Apparatus for testing an impermeable surface according to any one of claims 1 to 30, characterized in that the liquid outlet comprises at least one injection nozzle. 32. Apparatus for testing an impermeable surface according to any of claims 1 to 30, characterized in that the liquid outlet has the shape of at least one narrow and long slit. Methods for testing impermeable surfaces include: Placing the testing device proximate the surface; And simultaneously inducing a liquid and an air flow using said apparatus against said surface to ascertain a substantial degree of impermeability of said surface. 34. The apparatus of claim 33, wherein the apparatus is hermetically positioned against the surface such that a portion of the airflow exiting the apparatus toward the surface is re-entrained into the apparatus through the air inlet, Characterized in that the total amount and the total amount of air exiting the device are mass equilibrated in the device such that the device is parallel to the surface and at the same time the liquid and air flow are directed towards the surface Method for testing. 34. A method according to claim 33, wherein said apparatus is configured according to any one of claims 1 to 32. A method for testing an impermeable surface. 35. A method according to claim 34, characterized in that the device uses the one according to any one of claims 1 or 2 and 5 to 32. < Desc / Clms Page number 20 > 32. Use of an apparatus according to any one of claims 1 to 32, characterized in that a device constructed as described above is used to test the waterproofing properties of the surface of a building or building structure. 34. Use of a method as claimed in any one of claims 33 to 36, wherein the method is used to test the waterproofing properties of the surface of a building or building structure.