Patent Description:
Considering the current levels of mobile electronic devices usage and the movement of people seeking activity-based workplaces, there is a need for soundproof enclosures that provides quiet space for social interaction, privacy and comfort. Existing soundproof enclosures are relatively complicated in designs, and may be difficult to assemble, disassemble or relocate.

Typically, existing soundproof enclosures that have mechanical ventilations have air channels within the walls or within the ceiling with air ducts or hoses; therefore, the construction methods are more complicated. The natural ventilated type soundproof enclosures allow for air gaps within wherever convenient in the enclosure for air movements, however, these conventional air gaps compromise the sound isolation qualities and may admit external air impurities.

Therefore there is a need for a simple construction method to effectively build soundproof enclosures to address the increased focused on green environmental protection and reuse sustainability concept that has the ability to deploy and reuse, and is easy to assemble, disassemble and relocate to conserve consumption of materials and resources to provide soundproof enclosures within an outdoor public spaces such as stadiums, parks, and walkways; and indoor spaces such as airports, train stations, banks, exhibition halls or hospitals as well as at working environments such as offices or factories, and also at homes.

In addition, commercially available split-system air conditioners including ceiling concealed type and wall mounted type, are provided with indoor air blower units, which do not provide fresh air inflow to the soundproof enclosure.

For example, <CIT> discloses a sound insulation cabin for use within a building. The cabin has a ceiling panel with a multilayer structure is provided on top of the wall structure. The ceiling panel comprises a rigid panel which forms the base surface of the ceiling panel and an electrical insulating panel that completely covered the rigid panel and may have mufflers and heat exchangers for air conditioning. However, this construction method consists of various additional air hoses.

In addition, <CIT> discloses a ceiling panel and an assembly of a soundproof room. The soundproof room is constructed by assembling a plurality of wall panels, which forms the room peripheral wall, and mounted on at least one floor base and covered by at least one ceiling panel. The ceiling panel comprises an outer edge part having a main opening and a cover part fitted to the main opening for sealing the main opening. A support structure is provided at both the inner edge of the main opening and the outer edge of the cover part for preventing the cover part from falling into an insertion part between the main opening and the cover part. The support structure of the main opening includes a flange part with increasing diameter as it extends upward and the support structure of the cover part includes a tapered plane with increasing diameter as it extends upward in conjunction with the flange part. This prior art does not address the need for ease of assembly/disassembled and ease of relocation.

In another prior art example, <CIT> discloses a soundproof telephone booth which is equipped with an air conditioner. The telephone booth comprises a floor base having three vertical walls and an access frame fitted with an access door and mounted on the floor base. A roof panel is mounted on the upper surfaces of the vertical walls and the access frame. The air conditioner is installed on the upper surface of the roof panel for providing cooling air through an air outlet into the telephone booth and a communication means is provided inside a vertical wall and connected with a telephone. The vertical walls and the access door comprise glass fibre reinforced materials for soundproofing the telephone booth. This prior art is specific in design and may not be desirable for general purposes.

Document <CIT> discloses a soundproof enclosure according to the preamble of claim <NUM>.

Today's new technologies of <NUM> communication standard and block chain encryption have entrusted the world into an era of fast-pace changes and disruption of past mainstay business processes; hence people's behaviours and activities are fast changing and often unpredictable.

Consequently, for the management and administration of spaces such as but not limited to indoor/outdoor public spaces, office spaces, and factories, the usage of soundproof enclosures are desirable to be environmentally friendly by concept of durable reuse and are desirable to be easy to administer the assets in terms of durability, ease of assembly/disassembly, and ease of relocation.

Based on the foregoing, there is a need for soundproof enclosure that can be easily assembled, disassembled and relocated; and hence can be reused and re-deployed with ease with the purpose to conserve materials and resources and enhance sustainability, and improve the administration of these soundproof enclosure assets. Furthermore, there is a need for a method to easily construct a soundproof enclosure.

This invention has the improved capability to bring in fresh air flows that is filtered and silenced all within one modular ceiling unit to accommodate a phone booth or larger enclosed spaces with larger airflow requirements without having to use air ducts or to integrate or incorporate other parts of the soundproof enclosures. In addition, this invention has a floor base to easily relocate the enclosure in whole or in parts.

This invention thus aims to alleviate some or all of the problems of the prior art.

In accordance with an aspect of the invention, there is provided a soundproof enclosure, comprising a plurality of acoustical wall panels interconnectable each to another at opposing vertical side edges for enclosing an interior space, each of the acoustical wall panels having a bottom edge provided with a bottom flange adapted to be supported on a floor base unit or on a floor, and a top edge provided with a top flange, wherein at least a portion of a front wall panel is movably connected at one vertical side edge between an open position and a closed position for providing and covering an access opening in which the portion forms at least one access door panel of rigid material, and a multilayer decoupling ceiling unit disposed on the top edges of the acoustical wall panels for forming the enclosure. The multilayer decoupling ceiling unit comprising a plurality of ceiling layers having an intermediate core layer supported by the top flanges at the top edges of the acoustical wall panels, the ceiling layers are vertically spaced apart from one another, and a vertical wall member upwardly extending from an outer periphery end of the intermediate core layer, wherein the intermediate core layer of the multilayer decoupling ceiling unit which is disposed on the top flanges at the top edges of the acoustical wall panels, includes a decoupling element comprises a layer of low acoustic impedance material or sound insulating material interposed between contacting surfaces of the intermediate core layer and the top flanges for isolating and decoupling the ceiling unit from the acoustical wall panels to provide the soundproof enclosure with a desired sound impedance, and to enhance the sound absorption and insulation characteristics of the soundproof enclosure.

In an embodiment, the plurality of ceiling layers of the ceiling unit comprises at least one upper covering layer raised and suspended over the intermediate core layer by bracket means for defining at least one air flow passages therebetween, and at least one lower suspended layer disposed suspended beneath the intermediate core layer by bracket means for defining at least one air flow passage therebetween, wherein the ceiling unit includes an open exterior space within the vertical wall member and the upper covering layer, which is divided into an air flow passage for intake at one side and an air flow passage for exhaust at the other side, for accommodating one or more air ventilation units within the air passages to circulate the exterior air into the enclosure and to exhaust the interior air out from the enclosure, and wherein the ceiling unit includes an interior space in between the at least one lower suspended layer and the intermediate core layer which is divided into an air flow passage for intake at one side and an air flow passage for exhaust at the other side, for accommodating one or more air ventilation units within the air passages to circulate the exterior air into the enclosure and to exhaust the interior air out from the enclosure.

In one embodiment of the invention, the ceiling unit includes more than one upper covering layer and more than one lower suspended layer which are spaced apart from one another to provide sufficient surfaces for installation of various implements such as air circulation fans, split system air conditioner components, air-filters and sound silencers within the air passages.

In another embodiment of the invention, the lower suspended layer of the ceiling unit provides a corresponding gap in between an inner wall layer of the acoustical wall panel and inner corners of the lower suspended layer for trapping sound waves and reducing sound reflection properties within the interior space, and wherein the inner corners are formed with any surface topological treatment, such as jagged edges or rounded edges.

In yet another embodiment of the invention, the ceiling unit comprises a plurality of ceiling units disposed on top of the plurality of acoustical wall panels or a ceiling beam for forming a whole ceiling unit of larger diameter.

In still yet another embodiment, the ceiling unit having the intermediate core layer formed with an extended diameter portion extending over and larger than the diameter of the constructed acoustical wall panels and wherein the ceiling unit provides additional sound proofing features, weather protection features or aesthetic features.

In an embodiment, the vertical wall member of the ceiling unit is formed with its height being at least substantially the same as that of the height of the upper covering layer and located at an appropriate distance from the openings of the air flow passages in the exterior space to form a sound barrier to the openings.

In another embodiment, when the vertical wall member of the ceiling unit is not at an appropriate distance to the openings, additional vertical wall members are constructed at the openings to form additional sound barriers to the openings.

In yet another embodiment, the ceiling unit comprises an intersecting locking member with sound and electrical insulating material provided in between the intermediate core layer of the ceiling unit and the top flange at the top edge of the acoustical wall panel or a horizontal wall member extended from the vertical wall member, and having the intersecting locking member partially extended into the acoustical wall panel, and whereby the intersecting locking member can also be partially extended into the interior space of the soundproof enclosure.

In still another embodiment, the decoupling element of the ceiling unit comprises a layer of low acoustic impedance material or sound insulating material provided on a portion surface or all of the surfaces of the intermediate core layer such that the entire ceiling unit is completely sound and electricity isolated from the entire soundproof enclosure.

In yet still another embodiment, each of the ceiling layers of the ceiling unit further comprises a layer of low acoustic impedance material or sound insulating material on a portion surface or all of the surfaces of the ceiling layer.

In one embodiment, the multilayer decoupling ceiling unit is constructed into a portion or the whole of an acoustical wall to obtain any or all the performance features of the ceiling unit.

In another embodiment, the intermediate core layer comprises additional vertical wall member or vertical flanges of at least the same height added at locations of appropriate distance from the openings of the air flow passages in the exterior space to further enhance the sound barrier performance, whereby the vertical flanges are extended downwardly from the upper covering layer and may be curved inwardly or outwardly.

In still another embodiment, the air flow passage for intake includes an intake opening and the air flow passage for exhaust includes an exhaust opening in the exterior space which are on the opposite sides or substantially far apart from one another to allow for effective disposal of stale exhaust air from the interior space and provide the fresh air intake into the interior space, and wherein the air flow passage for intake includes an intake opening and the air flow passage for exhaust includes an exhaust opening in the interior space which are on the opposite sides or substantially far apart from one another to allow for effective air circulation within the interior space by allowing fresh air intake to be spaced apart from the air exhaust outflow.

In yet another embodiment, the various implements may be disposed on top of the surface of the upper covering layer in the open exterior space within the vertical wall member of the ceiling unit.

In still another embodiment, the implements of the air-filters and sound silencers within the ceiling unit are sufficiently porous to allow convectional air flow through such implements so that it does not require mechanical air circulation unit for air circulation.

In yet another embodiment, the floor base unit comprises a floor base plate formed of rigid material, at least one base frame for supporting the floor base plate and to allow for insertion of lifting arms of a pallet truck or forklift-vehicle below the floor base plate for elevating the floor base unit to a level above the floor level, and a decoupling element comprises a layer of low acoustic impedance material or sound insulating material to acoustically isolate and decouple the acoustical wall panels from the floor base unit, and one or more layers of flooring material provided on a top surface of the base frame.

In one embodiment, the floor base unit may comprise a plurality of floor levellers and a set of peripheral side covers which can be disassembled and removed.

In another embodiment, the floor base unit further comprises a set of castors attached to the floor base frame at an elevated level above the floor level to allow the soundproof enclosure to be easily moved, and wherein the soundproof enclosure comprises of a plurality of floor levellers which adjusted to raise the floor base above the caster levels such that the floor base is subsequently resting solely on the set of casters and hence the floor base is secured from moving about, and wherein in replacement of the set of casters, a plurality of lifting devices such as car jacks or lifting actuators may perform the similar functions of the set of floor levellers, and whereby lifting actuators may also be installed in the acoustical wall panels or coupling poles.

In yet another embodiment, the decoupling element of the floor base unit includes a set sound insulating gaskets and a set of plurality of protruding rigid material attached to the floor base of thicknesses which are above the height level of the sound insulating gaskets to elevate the acoustical wall panel bottom edge to allow for easy and smooth movement of the acoustical wall panel by opposing the weight of the acoustical wall panel using the reduced friction of the two opposing rigid materials of the acoustical wall panel bottom edge and the protruding rigid material until the precise assembly position between the acoustical wall panel and the floor base is arrived, and the two assembly components will then lodge into precise position of protruding rigid material matched to corresponding matching cavity in the acoustical wall panel bottom edge, and whereby instead the set sound insulating gaskets and the set of plurality of protruding rigid materials are attached to the acoustical wall panel bottom edge and the matching cavity is found on the decoupling surface of the floor base unit to achieve the same purpose, and whereby instead of the set of plurality of protruding rigid materials, the same purpose is achieved by a set of plurality of upstanding rounded tip pins of rigid material, and wherein the decoupling element of the ceiling unit includes a set sound insulating gaskets and a set of plurality of rigid materials protruding attached to the ceiling unit of thicknesses which are below the height level of the sound insulating gaskets to elevate the ceiling unit coupling surface to allow for easy and smooth movement of the ceiling unit by opposing the weight of the ceiling unit using the reduced friction of the two opposing rigid materials of the acoustical wall panel top edge and the protruding rigid material until the precise assembly position between the acoustical wall panel and the ceiling unit is arrived, and thereby the two assembly components will lodge into precise position of protruding rigid material matched to corresponding matching cavity in the ceiling unit coupling surface, and whereby instead the set sound insulating gaskets and the set of plurality of protruding rigid materials are attached instead to the acoustical wall panel top edge and the matching cavity is found on the decoupling surface of the ceiling unit to achieve the same purpose, and whereby instead of the set of plurality of protruding rigid materials, the same purpose is achieved by a set of plurality of upstanding rounded tip pins of rigid material.

In accordance with another aspect of the invention, there is provided a multilayer decoupling ceiling unit comprises a plurality of ceiling layers having an intermediate core layer, at least one upper covering layer raised and suspended over the intermediate core layer by bracket means, and at least one lower suspended layer disposed suspended beneath the intermediate core layer by bracket means, wherein the ceiling layers are vertically spaced apart from one another to form air passages therebetween, a vertical wall member upwardly extending from an outer periphery end of the intermediate core layer, and a decoupling element comprises a layer of low acoustic impedance material or sound insulating material disposed at a bottom surface of the intermediate core layer for isolating and decoupling the ceiling unit from a contacting area of an enclosed space for the ceiling unit to be supported thereon.

In an embodiment, the ceiling unit comprises an open exterior space within the vertical wall member and the upper covering layer, which is divided into an air flow passage for intake at one side and an air flow passage for exhaust at the other side, for accommodating one or more air ventilation units within the air passages to circulate the exterior air into the enclosed space and to exhaust the interior air out from the space, and an interior space in between the at least one lower suspended layer and the intermediate core layer which is divided into an air flow passage for intake at one side and an air flow passage for exhaust at the other side, for accommodating one or more air ventilation units within the air passages to circulate the exterior air into the space and to exhaust the interior air out from the space.

In another embodiment, the ceiling unit comprises a drainage trough provided along at least one of the edges of the intermediate core layer and an outlet extended outwards through the vertical wall member for draining and channelling rain water out from the ceiling unit.

In still another embodiment, the ceiling unit includes more than one upper covering layer and more than one lower suspended layer which are spaced apart from one another to provide sufficient surfaces for installation of various implements such as air circulation fans, split system air conditioner units, air-filters and sound silencers within the air passages.

In yet another embodiment, the lower suspended layer of the ceiling unit provides a corresponding gap in between a wall of the enclosed space and inner corners of the lower suspended layer for trapping sound waves and reducing sound reflection properties within the enclosed space, and wherein the inner corners are formed with any surface topological treatment, such as jagged edges or rounded edges.

In still another embodiment, the ceiling unit further comprises one or more ceiling units in a form of modular ceiling units disposed on top of the enclosed space or a ceiling beam for forming a whole ceiling unit of larger diameter.

In still yet another embodiment, the ceiling unit having the intermediate core layer formed with an extended diameter portion extending over and larger than the diameter of the enclosed space and wherein the ceiling unit provides additional sound proofing features, weather protection features or aesthetic features.

In an embodiment, the vertical wall member of the ceiling unit is formed with its height being at least substantially the same as that of the height of the upper covering layer and located at a minimum distance from the openings of the air flow passages in the exterior space to form a sound barrier to the openings.

In another embodiment, when the vertical wall member of the ceiling unit is not at an appropriate distance to the openings, additional vertical flanges are constructed at the openings to form additional sound barriers to the openings, and whereby the vertical wall member and the additional vertical flanges are extended downwardly from the upper covering layer and can be curved inwardly or outwardly to further enhance the sound barrier performance.

In yet another embodiment, the ceiling unit further comprises an intersecting locking member with sound and electrical insulating material intersecting the intermediate core layer of the ceiling unit and the contacting area of the enclosed space or a horizontal wall member, and having the intersecting locking member partially extended into the contacting area, and whereby the intersecting locking member can also be partially extended into the interior space of the enclosed space.

In still another embodiment, the ceiling layers of the ceiling unit further comprises one or more layer(s) of low acoustic impedance material or sound insulating material on a portion surface or all of the surfaces of each of the ceiling layers.

In an embodiment, the decoupling element is provided on a portion surface or all of the surfaces of the intermediate core layer of the ceiling unit.

In another embodiment, the various implements may be disposed on the upper covering layer in the open exterior space within the vertical wall member of the ceiling unit.

In still another embodiment, the implements of the air-filters and sound silencers within the ceiling unit are sufficiently porous to allow convectional air flow through such implements so that it does not require mechanical air circulation unit within the enclosure.

In yet another embodiment, the ceiling unit may be constructed in a portion or the whole of a wall panel of an enclosure.

In yet still another embodiment, the ceiling unit further comprises one or more sound mufflers to regulate sound exiting and entering the soundproof enclosure at the air flow passages between the exterior and the interior of the soundproof enclosure that provide external fresh external air circulation.

In accordance with another aspect of the invention, there is provided a method of constructing a soundproof enclosure, the method comprising the steps of prefabricating a peripheral wall by interconnecting a plurality of acoustical wall panels each to another at opposing vertical side edges to form an assembly of interconnected acoustical wall panels for enclosing an interior space, where each of the acoustical wall panels having a bottom edge and a top edge opposite the bottom edge, providing at least a portion of one acoustical wall panel movably connected at one vertical side edge between an open position and a closed position for providing and covering an access opening, and positioning the assembly of interconnected acoustical wall panels at the bottom edge on a floor or floor base unit, prefabricating a multilayer decoupling ceiling unit by providing a vertical wall member extending upwardly from an outer periphery end of an intermediate core layer of the ceiling unit, and abuttingly supporting a plurality of ceiling layers on top flanges at the top edges of the acoustical wall panels, the ceiling layers are vertically spaced apart from one another, and disposing the multilayer decoupling ceiling unit on the whole or portion of top edges of the acoustical wall panels, and attaching the ceiling unit to the peripheral wall by a decoupling element comprises a layer with low acoustic impedance material or sound insulating material interposed between the contacting surfaces and the peripheral wall for isolating and decoupling the ceiling unit from the peripheral wall.

In an embodiment, the acoustical wall panel having one or both the vertical side edges coupled to the coupling pole to form a single unit of acoustical wall panel to replace the need of use of one or both the coupling poles.

In another embodiment, the acoustical wall panels are formed of varying sizes and shapes which may comprise of curved shape on one vertical side edge or both vertical side edges to form different typological top views profiles such as rectangular, hexagonal or octagonal that can be formed by flat shaped acoustical wall panels.

In yet another embodiment, the method further comprises the step of providing at least a piece of handles which can be releasably secured to components in the sequence of assembly needing to be carried, positioned, and assembled to form the soundproof enclosure starting with releasably securing the set of handles to the first component to assembly on to the floor base unit, and in the sequence to assemble the soundproof enclosure begins with placing the floor base unit onto a floor space, then installing all the acoustical wall panels, and finally placing the ceiling unit on the top whereby the handles will then be left on the ceiling unit for future use.

In still another embodiment, the method includes the step of providing a piece of interlocking shape plate of rigid and strong material to be releasably secured onto a matching cavity on a top edge of each of the two interconnected acoustical wall panels to lock the two wall panels together.

In yet still another embodiment, the acoustical wall panels with the vertical side edges releasably coupled to one another or to a coupling pole by conventional tongue and groove joining method or by conventional overlapping flanges joining method.

In one embodiment, the acoustical wall panels comprise of varying sizes, and bended on the vertical axis to form varying curved shapes, are interconnected to one another on the vertical side edge or to a coupling pole, to form a soundproof enclosure of different typological top views profiles.

Other features and aspects of the disclosed technology will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the features in accordance with embodiments of the disclosed technology. The summary is not intended to limit the scope of any inventions described herein, which are defined solely by the claims attached hereto.

Embodiments of the invention will now be described by way of example only, and with reference to the accompanying drawings in which:.

Referring now to the drawings, there is shown a soundproof enclosure <NUM> constructed with sound absorbing and sound insulating material to insulate against internal and external noise, that can easily be assembled to form an enclosure which may be used as a quiet space for social interaction, privacy and comfort, and disassembled for easy relocation or relocated in whole, and there is shown a soundproofing air circulation unit with sound absorbing and sound insulating material to insulate against internal and external noise that may in installed in many applications, including external soundproof enclosures, elevator compartments, and to improve air conditioner systems.

<FIG> is an example of the embodiments of the present invention showing the soundproof enclosure <NUM> as prefabricated, assembled and disposed on the floor within an indoor or outdoor space such as walkway, park, airport, train station, exhibition hall, hospital or at working environment such as open office area, factory, as well as at home.

The soundproof enclosure <NUM>, an example of the embodiments of the present invention, is constructed by a plurality of acoustical wall panels <NUM> interconnectable with one another at opposing vertical side edges for enclosing an interior space <NUM> as shown in <FIG> and <FIG>. In an embodiment of the invention, each acoustical wall panel <NUM> is generally shaped to be able to interconnect to one another on the two vertical side edges 12f or to a coupling pole <NUM>.

Each acoustical wall panel <NUM> is constructed for the functional requirements of the soundproof enclosure <NUM> walls, and as an example illustrated in <FIG> of the embodiments of the present invention, the acoustical wall panels <NUM> include a front wall panel 12a comprises an access door panel of rigid transparent material, two side wall panels 12b having each side wall panel comprises two spaced apart rigid opaque surfaces for sandwiching a layer of sound isolating material to form panel 12b with acoustical properties, and a back wall panel 12c of a sound isolating rigid transparent material. Each acoustical wall panel <NUM> includes a bottom edge provided with a bottom flange 12e of rigid material adapted to be supported by and releasably secured onto a floor base unit <NUM> as shown in <FIG> or onto a floor space by a floor bracket 12j as shown in <FIG> and <FIG>. The acoustical wall panel <NUM> further includes a top edge provided with a top flange 12d of rigid material adapted to support and releasably secure a ceiling unit <NUM> thereon, as illustrated in <FIG>.

In an embodiment of the invention, the ceiling unit <NUM> is disposed on the top edge 12d of the acoustical wall panels <NUM> to form an enclosed interior space <NUM> as illustrated on <FIG>. In another embodiment of the invention, a ceiling unit <NUM> having an extended diameter portion larger than the diameter of the constructed acoustical wall panels <NUM> is disposed on the top edge 12d of the acoustical wall panels <NUM> to form the enclosed interior space <NUM> as illustrated on <FIG>.

<FIG> shows a perspective view of a soundproof enclosure with the front wall panel 12a in open position. <FIG> shows a perspective view of a soundproof enclosure <NUM> with the ceiling unit <NUM> in a raised position, the floor base unit <NUM> in a lowered position and the front wall panel 12a in closed position.

As an example of the embodiments of the present invention, the ceiling unit <NUM> is a multilayer decoupling ceiling unit with at least three layers <NUM> as shown in <FIG>.

In an embodiment of the present invention, the acoustical wall panels <NUM> may be releasably fastened directly on to a floor space or on to adaptive floor brackets 12j as shown in <FIG> and <FIG> on the floor and therefore the soundproof enclosure <NUM> is installed without a floor base unit <NUM> as illustrated in <FIG>.

In an embodiment of the present invention, the acoustical wall panels <NUM> may be releasably fastened onto a floor space and be adjusted for varying floor surfaces by levelling adjusters <NUM> within floor bracket 12j, as illustrated in <FIG>.

In an embodiment of the present invention, the acoustical wall panels <NUM> may comprise a panel structure 12b generally constructed with an exterior wall layer <NUM> and an inner wall layer <NUM> of rigid materials and sandwiched in-between with sound insulating materials such as foam, felt, rock wool, etc. The exterior wall layer <NUM> and the inner wall layer <NUM> each has an exposed surface which may be further layered with sound absorbing or sound insulating materials, such as foam or felt of various textures to improve the absorption or insulation of sound, and in addition, the exposed surfaces may also comprise of pores, holes, or textures to deflect or absorb sound waves as shown in <FIG>.

In an embodiment of the present invention, each acoustical wall panel <NUM> comprises the bottom flange 12e fitted at the bottom edge that can be releasably secured onto a top surface of the floor base unit <NUM>, or directly onto a floor space, or onto the floor bracket 12j installed on a floor space.

In an embodiment of the present invention, each acoustical wall panel <NUM> has the top flange 12d of rigid material fitted at the top edge that supports and can releasably secure the modular ceiling unit <NUM>.

In another embodiment of the invention, the acoustical wall panels <NUM> may be fitted with a rigid material of opaque, translucent, or transparent material in substitute of the abovementioned sandwiched construction; for example, shown in <FIG>, where the back wall panel 12c have its structure made of glass panel.

In embodiment of the invention, the soundproof enclosure <NUM> comprises of acoustical wall panels <NUM> and coupling poles <NUM> interconnected together with conventional overlapping flanges joining method as shown in <FIG> or with conventional tongue and groove joining method having a vertical tongue 14a provided on both vertical side edges of the coupling pole <NUM> as shown in <FIG> where a groove for accommodating the vertical tongue 14a provided on the vertical side edges 12f of the acoustical wall panels <NUM>.

In an embodiment of the present invention, the conventional overlapping flanges or the conventional tongue and groove joining method may be employed whereby a vertical tongue 14a of one acoustical wall panel <NUM> is formed in a tongue portion at the vertical edge 12f and a groove is formed in a complementary shaped groove portion provided on respective abutting vertical side edges 12f of another acoustical wall panels <NUM> to releasably secure to one another, as illustrated in <FIG>.

In the illustrated example in <FIG>, an assembly of interconnected acoustical wall panels <NUM> included a front wall panel, two side wall panels and a back wall panel which collectively form a peripheral wall of the soundproof enclosure. The plurality of acoustical wall panels <NUM> are interconnected and releasably secured by a plurality of coupling poles <NUM> at the vertical side edges 12f of the acoustical wall panels <NUM> by conventional groove and tongue fitting method or conventional overlapping flanges fitting method on each of the vertical side edges.

At least one strip of sound insulating material is fitted along the interconnecting vertical side edges of each of the acoustical wall panels <NUM> edges and each of the coupling pole <NUM> connecting edges to improve the sound insulation at the connections of the enclosure walls.

In an embodiment of the present invention, each of the acoustical wall panels <NUM> may be interchangeably disposed on any side of the soundproof enclosure.

At least a portion of the acoustical wall panel <NUM> illustrated in <FIG> is movably connected at one vertical side edge of the portion to a peripheral frame structure for providing and covering an access or entrance opening <NUM> for users to access to and from the soundproof enclosure. The front acoustical wall panel <NUM> acts as an access door and frame overlying the access opening <NUM> for movements between an open position and a closed position. The access door panel 12a is provided with handles <NUM> which facilitate the opening and closing of the access door panel 12a. The access door panel 12a can be of curved shape as illustrated in <FIG>, or of other shapes suitable for an access door panel 12a. To accommodate larger access area or to save layout space, the swing access door panel 12a as illustrated in <FIG> may be substituted by a sliding door construction as illustrated in <FIG>.

As an example of the embodiments of the present invention, in <FIG>, the front acoustical wall panel <NUM> wall structure 12b is substituted by an access door panel 12a shown in <FIG>, which may also be of translucent or transparent material such as glass. As illustrated in <FIG>, the front acoustical wall panel <NUM> may include a sound sealing strip of material <NUM> applied around the periphery of the access door frame 12i to create a soundproof seal.

In an embodiment of the invention, <FIG> illustrates a vertical strip of rigid material <NUM> releasably secured to one side of the access door panel 12a spanning its full vertical length and on the other vertical side edge movably secured to the access door frame 12i to act as a continuous door hinge <NUM> for the access door panel 12a. The frame 12i comprises of at least one strip of sound seal material to couple with door hinge <NUM> to sound seal the entire vertical strip of the opening of the access door panel 12a to improve the sound impedance by avoiding sound gaps caused by conventional door hinges, and hence when the access door panel 12a is in a closed position, it will block sound from entering and leaving the soundproof enclosure <NUM>. In addition, each of the four sides of the access door frame 12i is installed with at least one sound seal strip <NUM> to fully and continuously sound seal the door panel providing no sound gaps.

In an embodiment of the invention, the coupling pole <NUM> comprises a sound wave dispersing textures such a rough textiles or topography such as jagged vertical lines on the exposed inside surface <NUM> to reduce the sound reflection in the interior space <NUM> of the soundproof enclosure <NUM>. The corner edges of the lower suspended layer <NUM> can have jagged or matching typological edges to reduce sound reflection, as shown in <FIG>.

Correspondingly, in an embodiment of the invention, the lower suspended layer <NUM> is suspended below the intermediate core layer <NUM> to create a space to capture the sound waves and to reduce to the sound dB levels within the interior space <NUM> as shown in <FIG>.

In an embodiment of the invention, the acoustical wall panels <NUM> may have different shapes and interconnected to one another on the two vertical side edges to form an enclosure as illustrated by <FIG> showing the top view of a partial selection of the various possible shapes.

In another embodiment of the invention, an acoustical wall panel <NUM> may be integrated to a coupling pole <NUM> on one or both the vertical side edges. In <FIG>, a soundproof enclosure <NUM> is formed by four acoustical wall panels <NUM> and four coupling poles <NUM>, and hence all the acoustical wall panels <NUM> are interconnected to one another vide a coupling pole <NUM> on each of the two vertical sides. In <FIG>, as an example of this embodiment, each acoustical wall panels <NUM> are integrated with a coupling pole <NUM> on one vertical side edge. In <FIG>, the front and back acoustical wall panels <NUM> are integrated with a coupling pole <NUM> on both vertical sides.

In yet another embodiment of the invention, the coupling poles <NUM> connecting the vertical side edges of the acoustical wall panels <NUM> may be oriented at angles other than right angles to each other, such as at angles between <NUM> degrees to <NUM> degrees and are generally oriented at angles of <NUM> to <NUM> degrees. As an example of this embodiment, <FIG> has shown the coupling poles <NUM> connecting vertical sides are oriented at <NUM> degrees illustrating the assembly of six acoustical wall panels <NUM>. In addition, this embodiment may also embody the integration of coupling pole <NUM> with acoustical wall panel <NUM> as illustrated in <FIG>. Similarly, as an example of this embodiment, the assembly of interconnected acoustical wall panels <NUM> includes a front access door panel 12a, and two side acoustical wall panels which collectively form a peripheral wall in a triangular arrangement, as shown in <NUM>(iv) wherein the front acoustical wall panel <NUM> and the two side acoustical wall panels <NUM> are interconnected and releasably secured at each of their vertical side edges.

In an embodiment of the present invention, the coupling poles <NUM> are made with rigid materials with at least one cavity inside the pole. This cavity or cavities may be filled with sound insulating materials. In addition, the exposed surfaces of the coupling pole may also be layered with one or more layers of sound absorbing or insulating materials such a fabric, foam, or felt.

In an embodiment of the present invention, the acoustical wall panels <NUM> of the soundproof enclosure <NUM> can be installed by three methods:.

In an embodiment of the invention, the floor base unit <NUM> is provided as the base of the soundproof enclosure <NUM> and disposed on the existing floor of the space.

In another embodiment of the invention, the bottom edges 12e of the acoustical wall panels <NUM> are adapted to be supported directly on the floor base unit <NUM>. The floor base unit <NUM> is provided with a decoupling element to acoustically isolate and decouple the peripheral wall of the soundproof enclosure <NUM>.

In an embodiment of the invention, the floor base <NUM> includes a base frame 11a in the form of rigid material in crisscross structure to provide structural strength, at least one floor plate 11b of rigid material to provide top surface to the floor base <NUM>, a plurality of floor levellers 11c, in the form blot and floor stud, to level against uneven floors, an optional set of peripheral side covers 11d for reasons of at least one of the following; a. for user safety of the foot, b. aesthetic of the soundproof enclosure <NUM>, and c. to protect against debris or dirt into below the floor base <NUM> as shown in <FIG>.

In an embodiment of the invention, the floor plate 11b may comprise of a top layer and a bottom layer of rigid material; and sandwiched in-between with a layer of sound insulating material.

In another embodiment of the invention, more than one floor plate 11b would be laid onto the floor base frame 11a to form a larger floor base unit <NUM> for a larger soundproof enclosure <NUM> as illustrated in <FIG>. The base frame 11a may have an additional layer of rigid material to further strengthen its structure, as shown in <FIG>, and <FIG> whereby structural strength is derived from the design of the base frame (not shown) similar to that of warehouse packaging pallets.

One or more layer(s) of flooring material (not shown) which can be a carpet layer and also a flooring underlay layer (not shown) which is a carpet underlay or additional sound insulating materials may be laid on top of floor plate 11b to improve the sound insulating and sound absorbing performance of the soundproof enclosure <NUM>. In addition, one or more additional layer of rigid flooring material (not shown) may be disposed above the floor plate 11b.

In an embodiment of the present invention, as illustrated in <FIG>, the base frame 11a is constructed in structures similar to warehouse pallets for ease of relocation and movement by a hand pallet truck or a forklift vehicle. For a larger soundproof enclosure <NUM>, more than one pallet truck may be inserted into below the base frame 11a after removing the optional peripheral side covers 11d as illustrated in <FIG>; and therefore, the soundproof enclosure <NUM> can be easily relocated or move about in whole without disassembly.

In an embodiment of the invention, a plurality of castor wheels <NUM> are installed to the bottom surface of base frame 11a and a plurality of floor levellers 11c are installed and set at a height level that is above the roller level of the casters <NUM> as illustrated in <FIG>, and hence the casters <NUM> are operational to allow to move the soundproof enclosure <NUM> easily, or to relocated easily in whole. Correspondingly, in this embodiment, the floor levellers 11c can be adjusted and set to a level that is below the height of the roller level as illustrated in <FIG>, and in this position, the soundproof enclosure <NUM> is securely rested onto the floor space desired.

In yet another embodiment of the invention, a plurality of mechanical or electro-mechanical levelling devices 11d such as a car jack lift or a "LINAK base lift" actuator are installed on the bottom surface the base frame 11a; and serves the same purpose as the floor levelling studs 11c demonstrated in <FIG>, as illustrated in <FIG> and <FIG>. In addition, cylindrical electro-mechanical actuators can also be installed for the same embodiment performance herein described, as illustrated in <FIG>.

In an embodiment of the invention, a ceiling unit <NUM> is constructed by three layers of ceiling panels <NUM> comprising of an upper covering layer <NUM> of rigid material raised above the intermediate core layer <NUM> of rigid material by one or more brackets <NUM> that divide(s) the in-between space cavity into <NUM> cavities to form the air inflow and air outflow passages <NUM> for air circulation; and similarly, a lower suspended layer <NUM> of rigid material is releasably secured by bracket <NUM> means to the intermediate core layer by one or more brackets that divide/s the in-between space cavity into <NUM> cavities that forms the inflow and outflow spaces for air circulation. The intermediate core layer has one or more aperture(s) <NUM> of varying shapes to allow air to pass through from an upper air flow passage <NUM> to a lower air flow passage <NUM>, as illustrated in <FIG>.

In an embodiment of the invention, the brackets <NUM> and <NUM> topologically created the various required upper air flow passages <NUM> and lower air flow passages <NUM> for air circulation without the need to construct additional materials such as air duct, air hose or air channel, as illustrated by <FIG>.

In another embodiment of the invention, the multilayer decoupling ceiling unit <NUM> comprises a plurality of ceiling layers which includes an upper covering layer <NUM>, an intermediate core layer <NUM> and a lower suspended layer <NUM> as shown in <FIG>. Each ceiling layer is vertically spaced apart with one another. The lower suspended layer <NUM> comprises panel of rigid material which is attached to the intermediate core layer <NUM> with bracket means <NUM> to suspend the lower suspended layer <NUM> below the intermediate core layer <NUM> for defining a bottom horizontal air passage <NUM>. The upper covering layer <NUM> comprises a metal plate member which is disposed above and releasably secured to the intermediate core layer <NUM> with bracket means <NUM> to raise and suspend the upper covering layer <NUM> above the intermediate core layer <NUM> for defining an upper air flow passage <NUM> as shown in <FIG> and <FIG>.

In an embodiment of the invention, the construction method of the <NUM> layers of the ceiling unit <NUM>, the brackets <NUM> and <NUM> may contain cavities <NUM> in-between within the bracket flanges to form an additional third cavity to allow space to fit devices such as electrical connectors, lights, light electrical adapters or step-down electrical transformers as illustrated in <FIG>.

In an embodiment of the invention, one or more electrical fan or mechanical air-circulation device <NUM> is installed at the aperture <NUM> and therefore providing mechanical air circulation in the sound proof enclosure <NUM> as illustrated in <FIG>.

In embodiment of the invention, one or more air filter of any combination of air cleaning nature, including filter cloth, Hepa or ultraviolent light, is installed within the upper and lower air flow passages <NUM> and <NUM> and therefore providing filtered air flow into or exiting the sound proof enclosure <NUM>, as illustrated in <FIG>.

In an embodiment of the invention, one or more porous sound-silencing muffler <NUM> or air filter <NUM> is fitted into the two upper air flow passages <NUM> and the two lower air flow passages <NUM> of the ceiling unit <NUM> to insulate the sound going into or exiting the sound proof enclosure <NUM> and simultaneously allowing natural convection air flow between the interior and exterior air without having the need for mechanical air circulation.

In an embodiment of the invention, one or more sound muffler <NUM> as shown in <FIG> is installed in the upper and lower air flow passages <NUM> and <NUM>, as illustrated in <FIG>.

In an embodiment of the invention, one or more air filter <NUM> is installed in air flow passages <NUM> and <NUM>, as illustrated in <FIG>.

In another embodiment of the invention, the sound muffler <NUM> and the air filter <NUM> can be installed in a variety of ways. The combinations and arrangements are not in any way limited by the inherent design of the multilayer ceiling unit air flow passages <NUM> and <NUM>. By way of examples, <FIG> illustrated one combination and arrangement of the implements sound mufflers <NUM> and an air filter <NUM> installed in the ceiling unit <NUM>. In this embodiment, examples of other combination and arrangement of the implements of sound mufflers <NUM> and air filters <NUM> are further illustrated in <FIG>, <FIG>, <FIG>, etc..

The conventional air circulation method is deployed by the air circulation device installed on the intermediate core layer <NUM>, as shown in <FIG>. In an embodiment of the invention, the air circulation device(s) <NUM> can be installed within the air flow passages <NUM> and <NUM>.

In an embodiment of the invention, additional layers <NUM> can be deployed, such as large surface air filters <NUM> as illustrated in <FIG>. In this embodiment of the invention, five ceiling layers <NUM> are deployed to achieve the air flow and air circulation functions as illustrated in <FIG>. The ability to achieve such a high level of performance such deployment of large surface filters in a multilayer ceiling unit <NUM> of relatively small thickness is an embodiment of this invention.

In an embodiment of the invention, the additional layer <NUM> added the surface area required for installation of large surface air filters <NUM>, as illustrated in <FIG>.

In an embodiment of the invention, a multilayer ceiling unit <NUM> comprises of one or more multi-chamber sound muffler 57a, as shown in <FIG>, installed within the air flow passages <NUM> and <NUM>.

In an embodiment of the invention, an example of a high porosity sound muffler design is shown on <FIG>.

In an embodiment of the invention, the examples of sound mufflers <NUM>, such as 57a and 57b, may be deployed on the ceiling, walls, or floors of any enclosure requiring air circulation of external fresh air and soundproofing features, such as soundproof enclosure <NUM> or elevator cabins, etc..

In an embodiment of the invention, a multilayer ceiling unit <NUM> comprises of solar cells on upper covering layer <NUM> to provide electrical requirements to lights, air circulation, communication equipment within a soundproof enclosure <NUM>.

In an embodiment of the invention, a multilayer ceiling unit <NUM> comprises of one or more high porosity sound muffler 57b, as shown in <FIG>, installed within the air flow passages <NUM> and <NUM>.

In an embodiment of the invention, the top covering layer <NUM> and the intermediate core layer <NUM> provides structurally protection from dust, debris, or rain in outdoor or indoor conditions for the devices such as electrical connectors, lights, light electrical adapters, step-down electrical transformers, air-filters, porous sound-silencers, sound mufflers or parts or whole of commercial air-conditioning systems, and also provides structurally protection to the interiors of the sound proof enclosure <NUM> as illustrated in <FIG>, <FIG>, and more particularly illustrated <FIG> and <FIG>.

In an embodiment of the invention, the ceiling unit <NUM> is fitted as a part or a whole of an acoustical wall panel <NUM>, and thereby providing that acoustical wall panel <NUM> to be able to circulate and filter air and has sound impedance, and all the features of the ceiling unit <NUM> embodiments; these features being suitable for construction of a soundproof enclosure <NUM>, as illustrated in <FIG>.

In an embodiment of the invention, the ceiling unit <NUM>, of larger diameter than the perimeter of the soundproof enclosure <NUM> walls, is releasably secured on the enclosure <NUM> to provide an extended roof cover to protect the walls and interiors of the enclosure a degree of protection from direct sun light and rain, as illustrated in <FIG> and also illustrated in <FIG>.

In an embodiment of the invention, a ceiling unit <NUM> comprises a drainage trough <NUM> along at least one of the edges of the intermediate core layer <NUM> to effectively drain rain water away from roof of an enclosure to divert the rain water away from the walls, as illustrated in <FIG>. The outlet <NUM> of this drainage trough <NUM> is extended outwards to divert the water away from the acoustical wall panel whereby the rain water falls downwards and outwards.

In another embodiment of this invention, the drainage trough <NUM> is connected to a hose, inside or outside an acoustical wall panel <NUM> or inside a coupling pole <NUM>, to drain the water to the ground, as illustrated in <FIG>.

In an embodiment of the invention, a ceiling unit <NUM> comprises of the vertical wall member <NUM> is formed with its height being at least substantially the same as that of the height of the upper covering layer <NUM> and located at an appropriate distance from the opening <NUM> of the air flow passages <NUM> to form a sound barrier to the opening <NUM> in a manner similar to sound defecting barriers that are installed along highways or railway lines, and also to protect against debris.

In an embodiment of the invention, a ceiling unit <NUM> comprises of peripheral vertical wall members <NUM> acting as a sound barrier is further enhanced by the sound barrier curved outward to deflect sound waves originating mostly from areas around the human height as illustrated in <FIG>, and peripheral vertical wall <NUM> acting as a sound barrier curved inward improve deflection of sound waves originating from the external environment.

In another embodiment of the invention, a multilayer ceiling unit <NUM> comprises of the upper covering layer <NUM> bended downwards to improve the sound impedance entry to the soundproof enclosure <NUM>, and correspondingly the lower suspended layer <NUM> is bended upwards to improve the sound impedance exit from the soundproof enclosure <NUM>, and illustrated in <FIG>.

In yet another embodiment of the invention, where the peripheral wall member <NUM> is not at an appropriate distance to perform as a sound barrier to openings <NUM>, a multilayer ceiling unit <NUM> comprises of additional vertical flanges <NUM> of at least the same height as the upper covering layer <NUM> are added at locations of appropriate distance from the openings <NUM> act as a sound barrier, and whereby to further enhance the sound barrier performance, the vertical flanges <NUM> are extended downwardly from the upper covering layer <NUM> and may be curved inwardly or outwardly, as illustrated in <FIG>, <FIG>, in <FIG>, and <FIG>.

In an embodiment of the invention, a ceiling unit <NUM> provided the complete basic human requisites in an enclosed space in terms of fresh air inflow and stale exhaust air outflow that are filtered and silenced, and also provides sufficient lights.

In an embodiment of the invention, a soundproof enclosure of larger diameter comprises of more than one modular ceiling units <NUM> in <FIG>.

In yet another embodiment of the invention, a soundproof enclosure <NUM> of larger diameter comprises of modular ceiling units <NUM> of varying sizes and shapes, as illustrated in <FIG>.

In an embodiment of the invention, the intermediate core layer <NUM> of the ceiling unit <NUM> is supported or suspended by a layer of sound and electrical insulating material layer <NUM> that can isolate sound, vibration and electricity from the entire lower part of the enclosure <NUM> as illustrated in <FIG>. For a larger soundproof enclosure <NUM>, more than one ceiling unit can be disposed in a similarly manner.

The ceiling unit <NUM> of the soundproof enclosure <NUM> includes an intersecting locking member <NUM> with sound and electrical shield to releasably attach the ceiling unit <NUM> to the acoustical wall panels of the enclosure. The intersecting locking member <NUM> includes a stepped elongated body 62a fitted in an aperture extending through the thickness of the intermediate core layer <NUM> and the top flange 12d at the top edge of the acoustical wall panel <NUM> as shown in <FIG> or a horizontal wall member 16b extended from the vertical wall member <NUM> as shown in <FIG>. The stepped elongated body 62a of the intersecting locking member <NUM> is provided with a through hole along its lengthwise for receiving therethrough a securing bolt <NUM> from one edge of the elongated body 62a, which may be fastened by a nut <NUM> at the other edge of the elongated body 62a. The intersecting locking member <NUM> can also be partially extended into the interior space <NUM> of the soundproof enclosure as shown in <FIG>.

In an embodiment of the invention, an ease of assembly method is disclosed whereby an acoustical wall panel <NUM> or a modular ceiling unit <NUM> of the enclosure <NUM> is typically heavy and bulky, and thus in need a method to install more easily by use of sets of pins or rigid material to elevate the heavy components until they precisely fall into correct assembly positions. These components typically comprise of a layer of soft sound insulating gasket material along the joining surfaces that tend to easily get damaged during assembly because of movements between these surfaces with the weight set upon the surfaces. These sets of pins or rigid material elevates the heavy components until the precise correct assembly positions, and hence protects against damage to the soft sound isolating gaskets during the assembly process. The designs of this embodiment of the invention are illustrated in <FIG> to 12i.

In an embodiment of the invention, the soundproof enclosure <NUM> can be easily moved about and relocated because the floor base unit <NUM> comprised of a floor base plate which is structurally rigid, and four sets of feet securely fasten to the floor base plate elevating the floor base plate above the floor level, and a screw type floor levelling guide attached to each of the foot, as illustrated in <FIG>, and the floor base plate is supported at a level above the floor level sufficient for the insertion of a commercial hand pallet truck prongs or forklift vehicle to easily move the sound proof enclosure <NUM>, as illustrated in <FIG>, and <FIG>.

In another embodiment of the invention, a larger soundproof enclosure <NUM> can be easily moved about and relocated because the floor base unit <NUM> of a larger diameter comprised of a floor base plate which is structurally rigid, and <NUM> sets of feet secured fasten to the floor base plate elevating the floor base plate at a level above the floor level sufficient for the insertion of two commercial hand pallet trucks, and a screw type floor levelling guide attached to each of the foot adjusted for levelling on uneven floor surfaces, as illustrated in <FIG>.

In an embodiment of the invention, a floor base unit <NUM> comprised of a set of caster wheels to allow for the enclosure to be pushed around for relocation or reposition. Once a location or position has been selected, a set of floor levellers would raise up the enclosure floor base sufficiently to allow a set of caster wheels to be not touching the floor level; and this set of floor levellers can be of vertical bolt and stud, or of a set of raising device such as car jacks, or set of electrically operated device such as "Linak Baselift" or other actuating pistons, as illustrated in <FIG>, <FIG>.

In an embodiment of the invention, a floor base unit <NUM> comprised of a floor base plate 11a, which is structurally rigid, having a set of four industrial grade castors attached to the floor base plate to allow the soundproof enclosure to be moved about easily, and having four sets of feet securely fasten to the floor base plate being able to elevate the floor base plate above castors rolling level by adjusting lowering a screw type floor levelling guide attached to each of the foot such that the soundproof enclosure will no longer be able to move about, and releasably secured to the floor space as shown in <FIG>. The four levelling guides can be lowered such that the floor base is raised so that the set of casters can no longer touch the floor, and hence the soundproof enclosure <NUM> is securely and properly placed at a desired floor space, as illustrated in <FIG>. <FIG> is a see-through illustration of this embodiment.

In an embodiment of the invention, as an example of a floor base unit <NUM> which is structurally rigid comprised of a set of four industrial grade castors attached to the floor base plate to allow the soundproof enclosure to be moved about easily, and more than three sets of feet that incorporated mechanical or electro-mechanical device to adjust the height of each foot so that the feet can be lowered such that the floor base unit <NUM> is raised so that the set of casters can no longer touch the floor, and hence the soundproof enclosure <NUM> is securely and properly placed at a desired floor space, as illustrated in <FIG>. This invented technology is further illustrated with the four levelling guides of mechanical or electro-mechanical devices, and the installation of the set of casters a see-through illustration in <FIG> of <FIG>.

In an embodiment of the invention, the floor base unit <NUM> comprises four levelling guides of mechanical device similar to a car jack, and interconnected together by torque transfer links and gears to operate with a single crank handle or spindle as illustrated in <FIG>.

In an embodiment of this invention, the floor base unit <NUM> comprises three or more levelling guides of electro-mechanical device similar to a piston actuator <NUM> and are installed into the coupling poles <NUM> or inside the acoustical wall panels <NUM>, and the feet can be lowered such that the floor base is raised so that the set of casters can no longer touch the floor, and hence the sound proof enclosure <NUM> is securely and properly placed at a desired floor space, as illustrated in <FIG>.

In an embodiment of the invention, a soundproof enclosure <NUM> without any floor base unit <NUM> comprises a plurality of acoustical wall panels <NUM> and ceiling unit(s) releasably secured to a floor space by a floor bracket 12j installed directly on the floor, as illustrated in <FIG> and <FIG>.

In an embodiment of the invention, a soundproof enclosure <NUM> without any floor base unit <NUM> comprises a plurality of acoustical wall panels <NUM> and ceiling unit(s) releasably secured to a floor space by a floor bracket 12j at the bottom flange 12e of the bottom edge of the wall panel as illustrated in <FIG>.

In an embodiment of the invention, a method of assembly with ease is disclosed. A set of one or more handles are provided with the supply of the soundproof enclosure <NUM>. The installing sequence is to first place the floor base unit <NUM> onto the desired floor space, and then to carry and position and assemble the heavy acoustical wall panels <NUM> onto the floor base unit <NUM>. The generally soft sound insulating gasket materials to be sandwiched in-between the bottom edge 12e and floor base plate 11a can be easily damaged if in contact with one another, and movements are made to position the acoustical wall panel <NUM> to the assembly position, tearing the gasket materials in this movement.

<FIG> shows a front cross-sectional view of the multilayer decoupling ceiling unit <NUM> in accordance to an embodiment of the invention. The intermediate core layer <NUM> is provided with a pair of air passage apertures <NUM> for the air flow passage(s) <NUM> to pass to or from the air flow passage(s) <NUM>. The ceiling unit <NUM> can be of various shapes in accordance to the shapes of the soundproof enclosure <NUM> formed by the plurality of acoustical wall panels <NUM> defining the interior space <NUM> of the soundproof enclosure <NUM>. Although the acoustical wall panels <NUM> of the soundproof enclosure <NUM> may be sized differently, however the form of construction is identical with that above described.

The intermediate core layer <NUM> of the multilayer decoupling ceiling unit <NUM> may comprise a vertical wall member <NUM> extending perpendicularly from the edge of the intermediate core layer <NUM> for defining an upwardly extended wall for abuttingly retaining and supporting the plurality of ceiling layers thereon as shown in <FIG> and <FIG>.

In an embodiment of this invention, the soundproof enclosure <NUM> can include a fixed table <NUM> or foldable table which is attached to one of the acoustical wall panels <NUM> or the floor base unit <NUM>, a chair can be placed on the floor base unit <NUM> or floor within the enclosed space <NUM>, a sensing module can be incorporated to detect user existence for automatically controlling the lighting and the air circulation or ventilation unit, power connectors to provide electricity supply for the electronic devices; and network connection lines.

In accordance with another aspect of the invention, there is provided a method of constructing the soundproof enclosure <NUM> whereby the method includes the step of prefabricating a peripheral wall by interconnecting a plurality of acoustical wall panels <NUM> each to another at opposing sides to form an assembly of interconnected panels for enclosing an interior space <NUM>, where each of the acoustical wall panels <NUM> has a bottom edge 12e and a top edge 12d upper end opposite bottom edge 12e, providing at least a portion of one enclosure movably connected at one side edge between an open position and a closed position for providing and covering an access opening <NUM>, and positioning the assembly of interconnected panels at the bottom edge 12e on a floor space or floor base unit <NUM>, as illustrated in <FIG>.

Claim 1:
A soundproof enclosure (<NUM>) comprising:
a plurality of acoustical wall panels (<NUM>) interconnectable each to another at opposing vertical side edges (12f) for enclosing an interior space (<NUM>), each of the acoustical wall panels (<NUM>) having a bottom edge provided with a bottom flange (12e) adapted to be supported on a floor base unit (<NUM>) or on a floor and a top edge provided with a top flange (12d), wherein at least a portion of a front wall panel (12a) is movably connected at one vertical side edge between an open position and a closed position for providing and covering an access opening (<NUM>) in which the portion forms at least one access door panel of rigid material; and
a multilayer decoupling ceiling unit (<NUM>) disposed on the top edges of the acoustical wall panels (<NUM>) for forming the enclosure, the multilayer decoupling ceiling unit (<NUM>) comprising:
a plurality of ceiling layers (<NUM>) having an intermediate core layer (<NUM>) supported by the top flanges (12d) at the top edges of the acoustical wall panels (<NUM>), the ceiling layers are vertically spaced apart from one another; and
a vertical wall member (<NUM>) upwardly extending from an outer periphery end of the intermediate core layer (<NUM>),
wherein the intermediate core layer (<NUM>) of the multilayer decoupling ceiling unit (<NUM>) which is disposed on the top flanges (12d) at the top edges of the acoustical wall panels (<NUM>), includes a decoupling element interposed between contacting surfaces of the intermediate core layer (<NUM>) and the top flanges (12d) for isolating and decoupling the ceiling unit (<NUM>) from the acoustical wall panels (<NUM>) to provide the soundproof enclosure (<NUM>) with a desired sound impedance, and to enhance the sound absorption and insulation characteristics of the soundproof enclosure <NUM>);
the soundproof enclosure (<NUM>) being characterized in that the intermediate core layer (<NUM>) includes a decoupling element comprising a layer of low acoustic impedance material or sound insulating material (<NUM>).