JPH0357832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention relates to an insulation material application nozzle for pumping fibrous insulation material through a converging nozzle. In particular, it relates to a condensation nozzle for fibrous insulation materials in which dry or adhesive-wet insulation fibers can be forced through the condensation nozzle into an open or closed space, expanding upon exiting the nozzle and in an inflated state. .

BACKGROUND OF THE INVENTION Until now, fibrous insulation materials such as cellulose, mineral fibers or glass fibers have typically been applied or placed using insulation projectors. Bulk insulation fibers are usually sold commercially in bags, which are tightly packed with large quantities of insulation fibers for economical transportation and storage.

Open the bag at the location where the insulation material is to be used and place the insulation fiber material into the hopper of a large insulation material application machine. The fibers are usually unraveled into strips by the use of fingers or forks in a hopper to facilitate movement into a rotating air gate, where a large amount of low pressure compressed air entrains the fiber material and the use of air forces this material into a much larger diameter. The fibers exit through the open end of the hose and are poured or sprayed onto the area requiring insulation. This type of application has proven to be very satisfactory when the dry fibers are sprayed onto an unrestricted open surface at the end of the hose or at a point along its length.

It is often necessary or desirable to apply this fibrous insulation material to enclosed spaces such as interior walls or ceilings of buildings or homes. To carry out this type of construction it is necessary to provide a large number of holes in the inner or outer walls of the structure in order to introduce the fiber material into the interior space. Of course, it is desirable to construct this hole in such a way that its location is not visible at a later point in time, so that the cost of closing and repairing this hole is as small as possible.
In particular, we want to limit the outer diameter of the insulation material application nozzle to a size that is no larger than the height of a standard brick.
Desired when installing fiber insulation through brick walls.

The diameter of commonly used fiber-coated flexible hoses is usually
63.5 to 76.2 mm (2 1/2 to 3"), but the size of this construction hose is approximately 25.4 mm for brick structures.
(1″).Previous experiments in reducing the size of the construction nozzle to a workable form have shown that simply connecting a reducing nozzle to the end of a commonly used flexible hose is insulated. It has been found that the fibrous material becomes clogged in the nozzle, thereby causing frequent work stoppages and the need to clean the nozzle before further application can continue. This has a significant negative impact on a contractor's efforts to reduce the time and cost required to perform insulation work.

It has been found that it is almost impossible to introduce liquid adhesive into the nozzle due to this blockage condition. There is a significant problem in that the wet material sulfates in the nozzle when this condition occurs, making it almost impossible to remove the fibers from the nozzle. It has often been attempted to introduce the adhesive outside the end of the reduced opening of the nozzle so that mixing occurs after the fibers exit the nozzle. This has proven to be undesirable since it is still necessary to introduce the nozzle into the structure and mixing cannot be observed after the fibers have left the nozzle and entered the internal space.

Although applicants are aware that they must account for all patents related to the invention,
According to the applicant, no patents relating to this type of converging nozzle have been found.

Problems to be Solved by the Invention: Until now, when filling closed spaces such as the space between the inner and outer walls of a building structure, the use of large amounts of low-pressure air flow to transport insulating fiber materials for space filling has resulted in It became clear that there was a problem. It has been found that when large volumes of low-pressure transport media are used, the walls of the space actually bulge.

The present invention relates to a constriction and expansion nozzle for applying thermal insulation fiber materials. More particularly, it relates to an insulating fibrous material application nozzle that can also be used to swell or expand fibers and wet the fibers and application surface with an adhesive to obtain a deposit of insulation material.

To date, the size of conventional transport hoses has been reduced to the standard 653-762 mm (2 1/2
Attempts have been made to obtain nozzles that taper from 1 to 1 1/2 inches (25.4 to 38.1 mm). It has been found that whenever the nozzle size is reduced, the fibrous material tends to collect and become clogged, creating back pressure in the system.
It is always necessary to periodically stop the projector and clean the nozzle to remove obstructions. This not only interrupts work but also adds considerable expense. Another problem has emerged regarding the application of insulation materials to external or internal surfaces. Although it is possible to glue or paste batt-type cross-section materials to surfaces, it is much easier and faster to apply fibrous insulation materials by projecting or spraying methods. A problem that has arisen to date is that fibrous materials are usually easily applied in a compressed state. This not only necessitates the use of relatively large amounts of material, but also means that the material used does not have the required insulation material.

Based on the above reasons, it is an object of the present invention to provide a heat insulating material application nozzle which allows the insulating material to be introduced into a space or surrounding surface through small holes.

Another object of the invention is to apply the insulation material by injection method, using transport air to inflate and expand the fibrous material in order to obtain a lightweight highly insulating layer. .

Furthermore, it is an object of the present invention to provide a condensing nozzle which adds adhesive to the particles of the insulation material as they pass through the nozzle, so that a wet insulation material is obtained which prevents the insulation material from compacting over time due to its own weight when drying. It's about getting.

A fourth object of the present invention is to enable the application of expanded wet insulating fiber material to the outer or inner surface of an object;
This makes it possible to apply a layer of heat-insulating material with excellent heat-insulating properties to all surfaces.

Another object of the present invention is to provide an insulating material applied graduated nozzle that is easy and inexpensive to manufacture, and that does not require breakdown or periodic cleaning.

Means for solving the problem: According to the invention, the Bench-Lily principle is used, whereby energy is converted from a high pressure state to a high velocity state by a gradual change in the size of the nozzle. The body or main portion of the nozzle typically has a large size similar to or similar to the conventional flexible air hoses used in insulating material projectors to transport the fibrous material to the desired location. A flexible hose is connected to one end of the nozzle body. The opposite end of the nozzle is formed as a converging tube transitioning from a large diameter to a smaller diameter by about 1/3. The reduced diameter section or exit section can be any length desired, but usually a minimum of 101.6mm (4″) to exceed the width of a standard brick
It is. Typically, the nozzle transition has a smooth inner surface, providing a smooth transition from a larger diameter body to a smaller diameter outlet.

In the case of a standard nozzle, a high pressure auxiliary air or gas tube is installed on the inner surface of the transition section, with the outlet of the tube touching the inner surface of the constricted size outlet section. A threaded boss or external connection for a source of high pressure auxiliary air or gas may be provided on the outer body or transition portion of the nozzle to supply air to the inner tube. The tube acts as an ejector in its existing position, creating an even lower downstream pressure in the transition section, facilitating the suction of insulation fiber particles through the constriction section, and transferring this particles through the exit hole without blockage. to easily pass through the nozzle. The auxiliary gas flow thus achieves the two functions of sucking or urging the fiber material through the converging section of the nozzle and of pressurizing and forcing the particles to pass through the nozzle without any problems.

An additional advantage of the present invention is that the fibrous material is significantly compressed as it passes through the exit section of the nozzle and is still under relatively high pressure. When the fibers exit the exit hole of the nozzle itself, the compressed air contained within the fibers rapidly expands to atmospheric pressure and the fiber material expands to a low density or bulging state. This swelling of the fibers in the insulation material significantly reduces the density and increases the K-factor of the insulation material, thereby providing significant benefits. This expanded state of the fibers allows less material to be used to obtain the same insulation factor, or the same amount of insulation material can be used with an increased insulation factor.

The benefits obtained from this same nozzle are significantly increased by injecting adhesive into the stream of fibrous material within the nozzle. i.e. in addition to the auxiliary air or gas supply pipe provided inside the nozzle itself,
Similar equipment can be provided for introducing suitable adhesives such as polyvinyl, acrylic or acetate in a similar manner. In this way, an internal adhesive supply pipe arranged similarly to a gas pipe can be installed within the nozzle. This adhesive injection tube can be placed radially opposite the gas injector of the nozzle, such that the gas injector imparts a kinetic force along one side of the convergent portion of the nozzle and the adhesive flow is similarly directed to the opposite side. Give the power of. The pressurized adhesive stream exits the spray nozzle-shaped tube and sprays the adhesive sufficiently so that the fibrous material is thoroughly coated as it passes through the outlet section and leaves the nozzle outlet.

For the same reasons described for air or gas to expand the fiber material, the adhesive also expands to some extent and simultaneously coats the fibers so that they remain expanded or swollen during curing. The fibers applied by the nozzle of the present invention thus fill the space and prevent the insulating material from compacting over time and reducing the overall insulation factor after the adhesive has cured. A control valve and pressure gauge are located at each fluid inlet stream to the nozzle. In this way, the inside of the nozzle is controlled so that continuous operation can be carried out, thereby keeping the nozzle clean and free of obstructions.

According to another embodiment of the invention, the nozzle is manufactured using a molding process that forms an annular passageway or collar on the outer periphery of the body portion of the nozzle that can be used as a partial manifold for various auxiliary fluids used within the nozzle. I can do it. According to one embodiment, the circular collar or manifold is divided into two chambers, one chamber being used for auxiliary air and the remaining portion for liquid adhesive transport. The front end face of the collar is provided with a number of spray nozzles that communicate with the adhesive portion of the inner chamber. Wedge-shaped platforms radially opposed to each other are provided within the body extending from the body portion of the nozzle to the transition portion. One or both of the wedge-shaped platforms may be provided with internally drilled holes communicating with the adhesive and air portions of the manifold. The precise angle of this hole directs the auxiliary air correctly to the transition section for transporting the fiber material. An adhesive hole with a suitable spray nozzle at the outlet is used for wetting the fiber material if desired.
Flow control valves and pressure gauges can be included in each of the fluid manifold sections of the collar. The combination of the inner adhesive spray nozzle and the outer nozzle allows this device to obtain a deposited layer of thermal insulation material.
Can be used to apply insulating fibrous materials to external surfaces. Furthermore, this same nozzle or a standard wetting nozzle can be used to produce a butt-shaped insulation material that is easy to handle and can be installed in the desired location.

A wedge-shaped platform or ramp starts with one ramp first and ends before the transition section of the nozzle;
The arrangement is such that the incoming air and fibrous material is deflected across the nozzle to the opposite wall. A similar wedge-shaped platform or ramp is placed on the opposite side, but this platform extends further into the transition section of the nozzle and reflects the air and fibrous material towards the reduced exit section. In this way, the fibrous material is mixed and redirected into air channels suitable for supplementary air flow and adhesive addition, resulting in novel features according to the invention.

The materials that can be used to manufacture the tapering nozzle for applying insulation materials can be relied upon as desired.
Lightweight metals that are easily machined or cast are often used. These metals include aluminum, brass or steel. Furthermore, the nozzle according to the invention can be manufactured or molded using plastics or synthetic resins that can be mixed with reinforcing fibers, such as glass fibers.

It will be understood within the description of this specification that insulating fibrous materials include cellulose, minerals, glass fibers or other similar materials that may be applied as described herein.

Examples: The invention will now be explained in detail with reference to illustrated examples.

Referring in detail to the drawings, FIG. 1 shows an insulating fiber construction tapered nozzle according to the invention, which nozzle consists of a body section 12, a transition section 14 and an outlet section 16. The nozzle has an inlet hole 18 at the end of the body portion 12 and an outlet hole 20 at the downstream end of the outlet portion 16.

When applying most insulating fibrous materials, a large insulating material projector (not shown) is used to crush compacted particles into a loose material and feed the relaxed material into the compressed air stream. It is configured. A low pressure, high volume air flow is generally utilized to transport or convey the relaxed fiber particles. A flexible hose of approximately 6.5 mm (2 1/2") to 76.2 mm (3") in diameter is provided for transporting the fibrous material from the projector to the desired location with transport air. According to the invention, a constriction nozzle is attached to the end of a flexible hose for the purpose of reducing the overall diameter of the exit hole so that the insulation fibers can enter into a closed hollow copper or narrow area.

The flexible hose 22 is attached to a large hose clamp 24
is attached to the inlet end of body portion 12 by. A number of circumferential fins 26 are provided on the outer surface of the body portion near the inlet hole to securely connect and secure the hose 22 to the nozzle 10 in an airtight manner. The outer diameter of the body portion 12 of the nozzle 10 is sized to fit the inner diameter of the hose 22 and is generally 2 1/2 to 3''. 25.4mm
(1″) or slightly larger.
This part is generally sized to fit into a small hole made in the side of a structure such as a house by drilling into the wallboard or removing bricks. Of course, it is best to make such a hole as small as possible to minimize the cost of replacing or repairing it, thus limiting the diameter of the exit section to no more than 1 1/2". Preferably, the length of the outlet section 16 is at least 101.6 mm, although shorter lengths can be used.
(4″). This size allows the fibers to be inserted into the removed bricks or perforations to a sufficient depth to penetrate the internal cavities of the structure.

The convergence or transition section of the nozzle has a gently curved inner surface that gently reduces the larger diameter of the body section towards the smaller diameter of the outlet section. The rate of change in diameter is generally 3:1 to 2:1, with the transition extending over a sufficient length of several inches to form a smooth continuous flow section. A reinforcing boss 28 on the side of the body portion 12 may be positioned to receive a threaded hole 30. An inner hose or conduit 33 is secured to the inner opening of the threaded hole by brazing or welding and is oriented along the side of the transition section such that the outlet hole of the hose is located tangentially along the inner surface of the outlet section. It may be placed in Hose 33 is
It can have an internal diameter of 6.35 mm (1/4") or less if desired. The outlet end of the hose 33 is located slightly downstream of the end of the transition section 14, so that it exits the hose. The flow is directed laterally so as to induce a channel or tunnel effect in the fibers passing through the exit section.

For proper functioning of the invention, the hose preferably fits tightly against the inner surface of the nozzle to achieve the desired results.

As shown in FIG. 2, an auxiliary high pressure gas source such as air is connected to a T
The fitting 34 may be connected to the threaded boss 30 via a manual valve 38, and the manual valve is connected to a threaded fitting 40 inserted into the threaded boss 30. Valve 38 is provided specifically to control the flow of air through the outlet section when the fibrous material is being applied.

It should be understood that any desired type of fittings, coupling members and valve arrangements may be utilized and any type of hose or high pressure source may be utilized in the nozzle of the present invention. Also,
It should also be recalled that any gas can be introduced through the internal ejector nozzle arrangement described here.

In operating the apparatus, the projector is started and the desired insulating fibrous material such as glass fiber, asbestos, cellulose insulation or any type of fibrous or particulate insulation is charged into the machine. In ordinary insulation material projection machines, for transporting textile materials,
1 at a pressure of 2812.28~4218.42Kg/ ^m2 (4~6psi)
Approximately 6.5m ³ (230cu.ft) of air is used per minute. With the retracting nozzle provided by the present invention, the conveying air flow rate can be increased from 10546 to 14061 Kg/ ^m2 (15 to
approximately 0.7 per minute at slightly increased pressure (20 psi)
^m3 (25cu.ft). This modification requires only minor adjustments.

Traditionally, when using high volume, low pressure types of mechanical material application to introduce the air flow and material into a closed cavity within the walls of a structure, sufficient volume and air pressure is required to actually penetrate the walls of the structure. It was considered that there was a risk of dizziness. However, using the low volume, high pressure air application method provided by the present invention, the absence of wall expansion eliminates many of the problems that can occur when installing insulation in closed cavities. It has been found. This high-pressure expansion through the exit hole of the exit section of the nozzle has the vital function of relieving the compressed fibers exiting the exit section to atmospheric pressure, thus significantly expanding or fluffing the fibers to a very low consistency. provide. This feature significantly enhances the thermal insulation properties of the material.

FIG. 5 shows a second embodiment of an insulation application tapering nozzle, in which the nozzle 50 includes a body portion 52, a transition portion 54, and an exit portion with an end at an exit hole 58. It consists of 55. A flexible hose led from a projection type insulation application machine is secured to the end of the body portion 52 by a clamp 24. The main nozzle section and dimensions are similar to those described in the first embodiment, except that this device includes two injector devices 60 and 62. The ejector device provided for the gas or air flow has reinforcing bosses 64 provided on the sides of the body part 52 in a manner similar to that described above.
Gas hose 66 is joined by brazing or welding to the outlet end of the boss that communicates with threaded hole 68. The hose 66 is shaped to closely follow the contours of the inner surface of the transition section and has a short section extending toward the exit section of the nozzle. The outlet holes from the gas holes are arranged such that the gas flow is directed tangentially along the inner surface of the outlet section to provide the same ejector principle as provided for the nozzle. In this embodiment, the nozzle 50 also has a second ejector device 62 that provides a tacky wetting agent to the fibrous insulation as it passes through the nozzle. A second reinforcing boss 80 is provided on body portion 52 at a location generally diametrically opposite boss 64 . Same type, with 8 screw holes in the boss.
2 is provided, and an ejector hose 84 is fixed to the outlet hole of the screw hole 82.
is molded in the same manner as the hose 66, and is attached to the body portion 52.
and closely following the inner contour of the transition section 54, with a short section extending along the inner surface of the outlet section 56. The outlet 86 of the hose 84 allows the liquid adhesive to reach the outlet portion 5.
a spray nozzle 88 attached to the end of hose 84 to spray across the entire area of 6;
It may have. Adhesive ejector device 62 connects a generally high pressure source of liquid adhesive with a flexible hose 90;
They are connected via a T-joint 92 to which a pressure gauge 94 is attached, a manual shutoff valve 96, and a threaded connection member 98 screwed into the hole 82.

Examples provided by the converging nozzle 50 include:
It has the novel ejector principle described above with the addition of the introduction of adhesive flow. Also, the spraying of the adhesive into the air stream of the nozzle supports the ejector principle and further assists in the withdrawal of the insulating fiber material from the transition section of the nozzle and the extrusion of the compressed fibers through the exit section. In this way, the dry fibers are moved through the body part, compressed as they pass through the transition area, and then wetted by the adhesive spray.
Under compression and pressurization conditions carried out in the outlet section,
Before the fibers exit the exit hole 58, their outer surfaces are thoroughly wetted with adhesive. The fibers are significantly expanded and fluffed by the release of internal pressure to atmospheric pressure.

In this way, the insulating fibrous material produced by the nozzle of this embodiment exhibits a light, expanded consistency, which is thoroughly wetted before being introduced into the closed cavity or desired area. This process allows the adhesive-wet material to dry and stick within the cavity under its expanded conditions, thus preventing it from compacting or contracting within the cavity and providing continuous permanent insulation within the space. I will provide a.

In operation, it is only necessary to start the air source with the projector and introduce the fiber material into the air stream and transport it through the flexible hose 22 to the nozzle 50. Before the fiber material actually reaches the nozzle 50, the auxiliary ejector air or gas is pumped through the reinforced boss 60 to the nozzle 5 by opening a manual shutoff valve.
0. The gas stream enters the outlet section of the nozzle in a tangential direction, so that the fibrous materials, when they reach the transition section of the nozzle 50, flow continuously and freely into the outlet section, from where they are reduced in diameter. It is discharged via outlet 58. As soon as the fiber flow starts, the adhesive isolation valve 96 is opened and high pressure adhesive liquid is introduced into the spray nozzle 88. The spray nozzle sprays over the entire cross-section of the outlet section 56 so that each fiber of insulation material is thoroughly wetted before exiting the outlet hole 58. Of course, the reinforcing boss 80 and adhesive hose 84 may be located at any circumferential location surrounding the nozzle body portion 52, but it is satisfactory if they are located diametrically opposite the air hose 66. and was found to produce novel results.

FIG. 6 shows another embodiment of the tapering nozzle for applying insulation fibers according to the invention in the same manner. In this embodiment, the nozzle 100 includes an inlet pressure relief section 102, a body section 104, and a transition section 10.
6 and an outlet portion 108 terminating in an outlet hole 110. An inlet connection part 112 forming part of the pressure relief part 102 is connected by a hose clamp 24 to a flexible hose 22 of the insulation drilling machine.
The outer diameter of the inlet section 112 is the same as the inner diameter of the flexible hose 22 to provide an airtight and safe installation. Downstream of the inlet section 112, the body section 104 transitions to an approximately 1" to 1 1/2" larger diameter. This first section of the body part forms a hollow chamber 111 in which the fiber material and the transport air expand to a large volume and are thus decelerated. At a point approximately 1/3 of the length of body portion 104, two opposing inclined surfaces 114 and 11
6 is formed. These sloped surfaces 114 and 116
extend inwardly from one another, with the shorter of the two ramped or platform surfaces 114 terminating in a flat surface 118.

The other inclined surface 116 provides a continuously extending surface extending well into the transition section of the nozzle and terminating in a similarly planar surface 119 slightly inclined relative to the longitudinal axis of the nozzle.

If desired, the ramp 114 may begin upstream of the ramp 116 such that the transport air and the insulating fiber particles transported by the air are directed away from the ramp 114 and toward the opposing surface 116 first. Then, when the air reaches the second ramp 116, it is deflected back through the transition section and creates turbulence in the nozzle;
The turbulence allows the particles to be better mixed, compressed and forced out through the outlet section 118.

Hollow collar 1 surrounding the outside of the body part
20 are provided. Hollow chamber 1 inside the collar
22 is closed and completely surrounds the outer periphery of the body part. This internal cavity 122 has sloped areas 114 and 116, as is clear from FIG.
It extends to the inside of. This cavity may act as a manifold and be partitioned to accommodate one or more fluids. In this example,
Two partitions 124 and 12 within collar 120
6 is provided, whereby an internal hollow chamber 12
2 is divided into two separate compartments, such as a small cavity 128 and a large cavity 130, the latter cavity surrounding the outer circumference of the body part 104 by approximately 320°.

Cavity 128 is connected to a source of high pressure gas or air as described above. A threaded hole 132 is provided in the surface of the collar 120 for communication with the internal cavity 128.
is perforated. The screw hole 132 has a joint 13.
4 is arranged, and a flexible hose 136 and a manual shutoff valve 138 are connected to the joint. Hose 136, on the other hand, is connected to a source of compressed gas or air suitable for the purpose.

An extended passageway 140 is disposed from surface 119 through the inclined portion and is precisely positioned to enter and communicate with hollow chamber 128. The outlet of the passageway 140 is optionally connected to the outlet section 1
Similar to 08, a suitable nozzle may be provided for precise flow into the transition region within the nozzle.
The direction of gas flow from passage 140 is important for advantageous operation of the nozzle, directing it downstream of the transition section and thus intersecting the longitudinal axis of the nozzle at a point within the exit section of the nozzle.

If it is desired to use a liquid adhesive to wet the insulating fiber particles within the nozzle before it expands and is ejected, it is possible to A second oriented passageway 144 may be provided. The exit hole of the passageway 144 may also be provided with a suitable spray nozzle 146 to form a desired spray pattern for supplying the liquid adhesive to the insulation fiber particles. By using a satisfactory spray pattern, all of the particles can be thoroughly wetted. This operation is performed on slope 114.
and 116 are further enhanced by the turbulent main airflow caused by This air flow is illustrated by the air flow represented by arrow C shown in FIG.

The pressurized liquid adhesive is introduced into the cavity 130 through a threaded hole 148 provided in the top surface of the collar 120 and positioned in direct communication with the cavity 130 . A fitting 150 is disposed in the threaded hole 148, and the fitting is connected to a throttle valve 152 and a manual shutoff valve 15.
4, connected to filter 156 and flexible hose 160. The hose is connected to a suitable source of pressurized liquid adhesive (not shown). A pressure gauge 162 may be screwed onto the surface of the hollow collar 120 so as to communicate with the hollow chamber 130.
This pressure gauge continuously displays the actual pressure of the liquid adhesive present within the manifold. Thus, the internal pressure within the manifold can be controlled by the throttle valve 152 to produce the desired flow rate for satisfactory operation of the spray nozzle. In the retracting nozzle 100 illustrated in this example, a hollow manifold collar 120 constitutes one additional feature. A number of liquid spray nozzles 164 are screwed in communication with the cavity 130 in the face 166 of the collar 120. Generally, the surface 166 is the nozzle 10
0, such that the liquid spray pattern formed by nozzle 164 is arranged to surround the stream of adhesive-wet insulation fiber particles exiting outlet 110. There is.

In application, the nozzle 100 can be used to apply wet insulating fiber particles to an external surface to form a deposited layer of expanded insulating fibers with unparalleled thermal insulation capabilities. Thus, upon initiation of nozzle operation, wet fibers are directed from the exit portion 108 of the nozzle 100 to the desired surface. At the same time, adhesive liquid is sprayed by external nozzle 164 onto the surface that the fibers impinge on. The expanded or fluffed fibers immediately adhere to wet surfaces with an adhesive film on the fibers themselves, forming an extremely hard and durable all-over butt-shaped insulation layer after oxidation. It is therefore self-evident that the convergent nozzle described herein can be used not only to apply dry or adhesive-wet insulation into cavities or structures, but also to apply expanded insulation to the external surface of the structure. It can also be used to apply a layer of insulation.

Of course, if it is desired to introduce a third liquid, such as a catalyst, into the insulating fiber particles passing through the nozzle, an additional partition can be provided within the cavity 122 and optionally a third liquid can be introduced into the main fiber stream. It is also possible to provide a third channel for introduction.

In addition to the other uses described for the insulation application nozzle described herein, the internal adhesive wetting nozzle 50
can be used in manufacturing bat-shaped insulation materials. In this case, a large number of intentionally positioned and oriented nozzles 50 according to the invention are
The adhesive-wet insulation fibers are arranged to be deposited within the mold area, through which a backing material such as paper or sheet can be passed at any desired speed. In this way, wet insulation fibers can be deposited on the backing material to any desired thickness. After the backing material has continuously exited the mold area, it can be passed through a drying oven to accelerate curing of the adhesive. After exiting the drying oven, the long strip of insulation can be rolled up into the desired configuration for transportation or storage.

In addition, wet insulating fibers are deposited on a continuously running endless belt without a backing sheet,
It is also possible to produce only a heat-insulating layer without a backing. This method is extremely effective when working with insulating particles of mineral or cellulose type and allows these particles to be processed and used in ways that have not been possible to date.

Although a novel insulating fiber application nozzle has been shown and described in detail that allows fibers to be applied through reduced size apertures and in expanded particle form, the invention is not limited to the embodiments described above. It is obvious that numerous embodiments can be constructed within the scope of the present invention without departing from its technical concept.

[Brief explanation of drawings]

1 is a perspective view of a retracting nozzle according to the invention with an auxiliary gas or air inlet provided in the lower section of the nozzle; FIG. 2 shows an auxiliary air hose provided on the inner side of the nozzle; 1 is a sectional view taken along line 2-2 in FIG. 1, FIG. 3 is a sectional view taken along line 3-3 in FIG. 2, and FIG. - sectional view along line 4; Figure 5 is a longitudinal cross-section of the converging nozzle showing the two fluid inlets and their location for transporting auxiliary air and adhesive; Figure 6 is the manifold collar external adhesive spray nozzle. 7 is an end view of the nozzle of the second embodiment, and FIG. 8 shows the internal position of the manifold collar portion of the nozzle. 9 shows the body part in front of the transition section, 9-9 in FIG. 6 and 10 through the nozzle. FIG. 3 is a cross-sectional view of the nozzle showing the internal ramps used to divert the conveying air and fibers. 10,50,100...nozzle, 12,52,
104...Body part, 14, 54, 106...
Transition part, 16, 56, 108...Exit part, 1
8...Inlet hole, 22...Transportation hose (flexible hose), 30...Threaded boss, 33, 66, 84...
... hose or conduit, 114, 116 ... wedge-shaped slope, 118, 119 ... end face, 120 ... collar, 140, 144 ... passage.

Claims (1)

[Scope of Claims] 1. A heat insulating fiber material application nozzle with a reduced size outlet hole for applying heat insulating fiber particles coming out of a heat insulating material projector, which includes: (a) a body portion having an inlet hole at one end; A transport hose connected to the insulating material projector is connected to the inlet hole, and the body portion has approximately the same outer diameter as the transport hose, (b) the outlet portion has a smaller diameter than the body portion, and (c) the body portion (d) directing the auxiliary gas flow to the nozzle along the inner surface of the outlet section and approximately with the inner surface; the insulating fiber material being conveyed through the nozzle is compressed in the transition section by the auxiliary gas stream and extruded from the exit section in compressed condition, with the result that the particles are When leaving the outlet section of the nozzle, the particles expand significantly into a bulging state due to the expansion pressure of the gas surrounding the fiber particles, and (e) the auxiliary gas introduction device connects the connection device located outside the body section and the inside of the nozzle. a conduit device supported on the outlet portion, the conduit device having a portion disposed on the inner surface of the outlet portion and an outlet hole thereof disposed on the inner surface of the outlet portion, whereby the auxiliary gas flow When flowing along the inner surface and exiting the exit hole, it is immediately parallel to the longitudinal axis and the pressurized insulation fiber particles increase their insulation properties when extruded from the exit hole of the nozzle. A construction nozzle made of a heat-insulating fiber material that is characterized by being inflated to a lightly bulging state. 2 The length of the exit section of the nozzle is at least 101.6
The nozzle according to claim 1, wherein the diameter of the outlet portion is 25 to 50 mm (4″) larger than the inner diameter of the body portion.
% of the nozzle according to claim 1. 4. The auxiliary gas introduction device is arranged to generate a reduced pressure at the transition part of the nozzle and an overpressure at the outlet part,
2. A nozzle as claimed in claim 1, whereby the insulating fibrous material passes through the nozzle without blocking it. 5. The auxiliary gas introduction device has a connecting device arranged outside the body part and a conduit device supported in the nozzle, the outlet hole of the conduit device being arranged such that the auxiliary gas is guided parallel to and along the inner surface of the outlet part. Flowing, pressurized insulating fiber particles disposed against the inner surface of the outlet section expand into a light bulge to increase their insulating properties when extruded from the exit hole of the nozzle. A nozzle according to range 1. 6. A device for spraying pressurized liquid adhesive onto the insulating fiber particles passing through the exit section of the nozzle, so that the fibers are wetted with adhesive and the expanded particles leaving the nozzle are rigid enough to prevent settling or densification over curing time. A nozzle according to claim 1, which forms a mass of. 7. The liquid adhesive spraying device has a connecting device on the outside of the nozzle for connecting to a source of pressurized liquid adhesive and a conduit device carried on the inside surface of the nozzle, the conduit device being connected to the connecting device at one end and having a conduit device connected to the connecting device at the other end. a spray nozzle, the conduit device and the spray nozzle being arranged within the outlet section against its inner surface, the spray nozzle being arranged to spray the liquid adhesive over the entire cross section of the outlet section, thereby 7. A nozzle according to claim 6, wherein the insulating fiber particles are completely wetted as they pass through the outlet section of the nozzle. 8. The nozzle of claim 7, wherein the auxiliary gas introduction device and the adhesive spray device are arranged radially opposite each other within the nozzle. 9. The conduit device of the auxiliary gas introduction device and the adhesive spray device is a tube shaped to follow the inner surface contour of the transition portion of the nozzle, the outlet end of this tube is located slightly downstream of the boundary between the transition portion and the outlet portion, and the tube A nozzle according to claim 1, wherein the fluid exiting the outlet and passing through the outlet section promotes movement of the flow of insulation fiber particles through the outlet section. 10 An insulating fibrous material application nozzle for applying a layer of insulating fibrous material on an external surface, comprising: (a) a hollow body part, a transition part and an outlet part each having a reduced outlet; (b) the first or second tapered tapered wedge ramp is connected to one another as an integral unit, one end of the body portion being connected to a source of low pressure air entraining an insulating fibrous material; (c) a hollow annular collar substantially perpendicular to the longitudinal axis of the nozzle at the outer periphery of the body portion; (d) the first ramp forming a converging angle toward the longitudinal axis of the nozzle and terminating in a substantially flat end face;
and (e) a hollow chamber formed in the collar is connected to a source of pressurized fluid and is in contact with an end face of the first ramp. a passageway communicating the hollow chamber in the collar is provided through the first wedge-shaped ramp, the passageway having an outlet located downstream of the transition portion end near or within the outlet portion; This transition section is disposed between the body section and the outlet section and is arranged to provide a substantially smooth transition from a large diameter in the body section to a small diameter in the outlet section, so that the pressurized fluid in the hollow chamber is transferred to the nozzle. A nozzle for applying a heat insulating fiber material, characterized in that the movement of fiber particles is promoted so that the compressed heat insulating fibers introduced into the interior expand when exiting the nozzle. 11. The hollow chamber formed in the hollow collar is partitioned to form two hollow chambers, and is provided with a second passage passing through the slope and leading into the second hollow chamber, whereby the hollow chamber is introduced into these hollow chambers. 11. A nozzle as claimed in claim 10, wherein different fluids are simultaneously directed into flow through the interior of the nozzle. 12 one cavity in the collar is connected to a source of pressurized gas, a second cavity is connected to a source of pressurized liquid adhesive, and the gas and liquid adhesive pass through the passageway through the fibrous material through the nozzle. 12. A nozzle as claimed in claim 11, which is introduced co-currently into the air. 13. The exit hole from the passageway containing the fluid adhesive has a spray nozzle, and the liquid adhesive is sprayed so as to spread over the entire cross section of the exit section of the nozzle, so that the insulating fiber particles are sprayed before exiting the nozzle. 13. A nozzle as claimed in claim 12, which is completely wetted by the adhesive. 14. The hollow chamber of the collar for introducing the liquid adhesive has a number of spray nozzles on the downstream outer surface of the collar;
The spray nozzle is arranged to form an outer spray that surrounds the stream of insulating fiber particles exiting the interior of the nozzle, thereby causing the twisted fiber particles to adhere to the surface onto which the adhesive has been sprayed; 12. The nozzle according to claim 11, wherein the nozzle is provided with a layer of heat insulating material on its surface. 15. In a method for producing a bat-shaped insulation material from bulk fiber particles, the method comprises: (a) introducing transport air and bulk insulation fiber particles into a nozzle having a body portion, a transition portion and a reduced-sized exit portion; The transition section has a substantially smooth transition from a larger width or diameter in the body section to a smaller width or diameter in the outlet section, (b) directing the auxiliary gas flow to the reduced outlet section of the nozzle;
A conduit device having at least a portion extending inside the nozzle and having an outlet hole disposed adjacent to or within the outlet section is used to inject the fibrous material through the outlet section in compressed form. (c) expanding gas pressure causes the fibers to expand as they exit the nozzle, with an auxiliary gas flow exiting the exit hole substantially parallel to the exit; (d) spraying a stream of adhesive into the exit section to completely wet all fiber particles passing through the nozzle; (d) directing the stream of adhesive-wet insulation fiber particles onto the desired area of the surface of the insulation material when cured; A method for producing a butt-shaped insulating fiber, which comprises arranging fibers wetted with an adhesive to form a deposited layer to form a butt. 16. The method of claim 15, wherein the conveyor is moved continuously and the insulating fibrous material is continuously sprayed onto the conveyor to produce a long continuous vat of the insulating fibrous material. 17. The method of claim 16, wherein long continuous strips of insulating fibrous material are cut and the material is wound into compressed coils for transportation and storage.