Fire protection sprinkler assembly

A sprinkler assembly (10) includes a (plastic) sprinkler frame (12) and a deflector assembly (30) circumferentially disposed about the sprinkler frame. The deflector assembly includes a receiver portion (32), a deflector member (34), and at least one extension member (36) to space the deflector member from the receiver portion. The at least one extension member is peripheral with respect to the receiver portion and the deflector member. The sprinkler assembly can be configured with the deflector assembly translating with respect to the sprinkler frame. Alternatively, the deflector assembly can be fixed with respect to the sprinkler frame.

TECHNICAL FIELD

The present invention relates generally to fire protection devices and, more specifically, sprinkler assemblies and the arrangement and operation of their components.

BACKGROUND OF THE INVENTION

Generally, known automatic fire protection sprinklers include a sprinkler frame or body with an inlet that that is connected to a supply of firefighting fluid under pressure. Disposed within the outlet of sprinkler body is a sealing element supported by a thermally responsive trigger to prevent the discharge of fluid from the outlet. In response to a sufficiently sized fire or other heat source, the thermally responsive trigger actuates thereby releasing the sealing element to permit discharge of fluid from the sprinkler outlet. The discharged fluid impacts a deflector member disposed at a distance from the outlet for distribution of the fluid. The deflector member can either be disposed in a fixed distance relationship with respect to the sprinkler outlet, i.e., a fixed deflector or alternatively, the deflector can translate with respect to the sprinkler outlet, e.g., a drop down deflector.

U.S. Pat. No. 5,664,630 shows and describes exemplary embodiments of fixed and drop down deflector sprinkler assemblies. FIG. 1 of U.S. Pat. No. 5,664,630 shows a one piece frame arm(s) and body sprinkler frame with a knuckle or apex formed at the end of the frame arms. Centrally affixed about the knuckle is a deflector. The deflector includes a central region that is disposed over an end of the knuckle and secured by swaging. Shown in FIGS. 2 and 3 of U.S. Pat. No. 5,664,630 is a concealed sprinkler having a translating or drop down deflector. The sprinkler includes a sprinkler body disposed about which is a deflector support. The deflector support includes a pair of arms which extend axially away from the outlet of the sprinkler body. The ends of the arms are flanged and bored to respectively support a pair of guide pins which slide within the bores. Coupled to the end of the guide pins is a deflecting structure for translation relative the sprinkler outlet. A pair of bores are formed in the deflecting structure through which the ends of the guide pins pass and are swaged to fix the deflecting structure to the guide pins. In order to provide sufficient surrounding material in the frame, frame structure or deflecting structure for supporting and/or securing the guide pins, the through bores are located on a planar surface that is radially inward of its perimeter. Accordingly, the guide pins are disposed radially inward of the deflecting structure and/or the periphery of the sprinkler frame or frame structure.

These known sprinkler assemblies can present some design limitations and manufacturing complexities. The fixed deflector assembly with the one piece frame, arms and knuckle defines only a single fixed distance between the deflector and the sprinkler outlet. Moreover, each of the fixed and translating deflector assemblies can involve manufacturing and assembly of multiple interconnected components including the guide pins or compression screws separate from the sprinkler frame, surrounding structure and/or deflector member. It may be desirable to provide sprinkler assemblies that overcome some of these design limitation while presenting a more simplified construction.

DISCLOSURE OF INVENTION

Embodiments of the present invention provide for preferred sprinkler assemblies. More specifically, preferred embodiments of the sprinkler assembly include a sprinkler frame and a deflector assembly circumferentially disposed about the sprinkler frame. The sprinkler frame is preferably formed from plastic; and a preferred embodiment of the deflector assembly includes a receiver portion, a deflector member, and at least one extension member to space the deflector member from the receiver portion. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. Preferably, the deflector assembly is a unitary structure. The sprinkler assembly can be configured with the deflector assembly translating with respect to the sprinkler frame. Alternatively, the deflector assembly can be fixed with respect to the sprinkler frame.

A preferred embodiment of the sprinkler assembly includes a sprinkler frame having a proximal portion, a distal portion and an intermediate portion extending between the proximal and distal portions. The sprinkler frame has an outer surface and an inner surface with the inner surface defining a fluid passageway extending from the proximal portion to the distal portion to define a sprinkler axis. The assembly further includes a deflector assembly having a receiver portion, a deflector member and at least one extension member disposed preferably peripherally and between the receiving portion and the deflector member to space the deflector member from the receiver portion along a central deflector axis. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. The receiver portion is disposed about the intermediate portion of the sprinkler frame to axially align the deflector axis with the sprinkler axis for translation of the deflector assembly relative to the sprinkler frame. In one particular embodiment, the distal portion of the sprinkler frame has an outer surface including a formation that limits the axial translation of the deflector assembly in the distal direction.

An alternate embodiment of the sprinkler assembly provides for a deflector assembly disposed in a fixed relation with respect to the sprinkler frame. The sprinkler assembly preferably includes a plastic sprinkler frame having a proximal portion, a distal portion and an intermediate portion extending between the proximal and distal portions. The sprinkler frame has an outer surface and an inner surface defining a fluid passageway extending from the proximal portion to the distal portion to define a sprinkler axis. A preferred deflector assembly includes a receiver portion, a deflector member and at least one extension member between the receiving portion and the deflector member to space the deflector member from the receiver portion along a central deflector axis. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. The at least one extension member preferably has at least one opening for engaging the outer surface of the sprinkler frame to fix the deflector assembly with respect to the sprinkler frame.

Embodiments of the present invention provide for sprinkler assemblies, their components and methods of installation. More specifically, preferred embodiments of the sprinkler assembly include a sprinkler frame and a deflector assembly circumferentially disposed about the sprinkler frame. The sprinkler frame is preferably formed from plastic; and a preferred embodiment of the deflector assembly includes a receiver portion, a deflector member, and at least one extension member to space the deflector member from the receiver portion. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. The sprinkler assembly can be configured with the deflector assembly translating with respect to the sprinkler frame.

A preferred embodiment of the sprinkler assembly includes a sprinkler frame having a proximal portion, a distal portion and an intermediate portion extending between the proximal and distal portion. The sprinkler frame has an outer surface and an inner surface, the inner surface defines a fluid passageway extending from the proximal portion to the distal portion to define a sprinkler axis. A preferred deflector assembly having a receiver portion is disposed about the intermediate portion of the sprinkler frame; and a support cup having an inner surface surrounding the sprinkler frame defines an annular space therebetween. The receiver portion is disposed in the annular space to axially align the deflector axis with the sprinkler axis for translation of the deflector assembly relative to the sprinkler frame. Moreover, the deflector assembly translates from a first proximal position to a second distal position, and the deflector assembly surrounds the sprinkler frame in each of the first and second position. A preferred embodiment of the deflector assembly includes a receiver portion, a deflector member, and at least one extension member to space the deflector member from the receiver portion. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. In a preferred embodiment, a cover plate assembly and an escutcheon are disposed about the support cup. The deflector assembly translates from a first proximal position to a second distal position, the cover plate supports the deflector assembly in the first proximal position to define an unactuated state of the sprinkler assembly.

Embodiments of a preferred sprinkler assembly provides for a sidewall sprinkler and more preferably a concealed horizontal sidewall sprinkler. Preferred embodiments of the sprinkler assembly include a sprinkler frame and a deflector assembly circumferentially disposed about the sprinkler frame. The deflector assembly includes a receiver portion preferably circumferentially disposed about the sprinkler frame, a deflector member, and at least one peripheral extension member to space the deflector member from the receiver portion. The at least one extension member is preferably peripheral with respect to the receiver portion and the deflector member. The deflector member is preferably a unitary structure having a face plate portion and a canopy portion. Due to the arrangement of the receiver and the extension members of the deflector assembly, the face plate portion preferably presents an initial impact surface to the outlet of the sprinkler that is preferably orthogonal to the outlet and intersecting the sprinkler axis.

A preferred method of forming a deflector assembly is provided. The preferred method includes any one of cutting, stamping or punching a deflector member, at least one extension member and at least receiver segment from a one piece planar blank. The method further includes disposing the extension member between the deflector member and the receiver segment. More preferably, terminal ends of the extension member are disposed at the peripheral edges of the deflector member and the receiver segment. Forming the deflector assembly includes bending the blank at the transition between the extension member and the deflector member and the receiver segment. The deflector assembly is preferably a unitary structure having a deflector member, and at least one peripheral extension member and a receiver portion. The at least one extension member is preferably formed peripheral with respect to the receiver portion and the deflector member. In one preferred embodiment, the method includes forming the deflector assembly with a deflector member, at least one extension member and a receiver portion. In another preferred embodiment, the method includes forming the deflector member with a face plate portion, a canopy portion and at least one of a void and a slot from the one-piece blank. The preferred forming further includes bending the canopy portion with respect to the face plate portion. Moreover, the receiving member is preferably bent or curved for appropriately receiving the sprinkler frame in a manner as previously described.

MODE(S) FOR CARRYING OUT THE INVENTION

Shown inFIGS. 1 and 1Ais a first illustrative embodiment of a preferred fire protection sprinkler assembly10. The preferred assembly10includes a sprinkler frame12, preferably formed from a plastic, and a deflector assembly30circumferentially disposed about the sprinkler frame12. The deflector assembly30is preferably configured to translate relative to the sprinkler frame12. Alternatively, the deflector assembly30may be fixed relative to the sprinkler frame12.

The sprinkler assembly10may be configured as either a pendent, a concealed pendent or a sidewall sprinkler in which the assembly10preferably includes operational components of a fire protection sprinkler, such as for example, i) an internal closure or seal assembly50for preventing discharge of firefighting fluid, i.e., water, from the sprinkler frame12; and ii) a thermally responsive trigger assembly60which maintains the sprinkler assembly10in an unactuated state by maintaining the internal seal assembly50when coupled to a fire fighting fluid pipe supply. Upon thermal activation of the trigger assembly60, the sprinkler assembly10is placed in an actuated state by releasing the seal assembly50for the discharge of water. In the preferred configuration and operation of the sprinkler assembly10, the deflector assembly30axially translates with respect to the sprinkler frame12distally from a first unactuated position, shown inFIG. 1, to a second position, shown inFIG. 1A.

The deflector assembly30preferably includes a proximal portion and a distal portion with an extension therebetween to couple and space the distal portion from the proximal portion. As shown, the proximal portion of the deflector assembly30defines a receiver portion32which preferably surrounds and more preferably circumferentially surrounds the sprinkler frame12. The distal portion of the sprinkler assembly30includes a deflector member34configured for distribution of water discharged from the outlet20bto address a fire. Extending between the receiver32and the deflector member34is one or more extension members36. The extension member(s)36space the deflector member34from the receiver portion32and more particularly axially locate the deflector member34from the outlet20b. The extension member36is preferably peripheral with respect to the receiver portion32and the deflector member34. Preferably, the deflector assembly30is a unitary structure.

Shown inFIGS. 2A-2F and 3A-3Care various embodiments of the deflector assembly30. The receiver portion32defines a central axis B-B of the deflector assembly30and the extension members36couple the deflector member34to the receiver32so as to preferably centrally align the deflector member34along the central axis B-B as illustratively shown in the deflector assembly30aofFIG. 2A. Because the sprinkler frame12translates within the receiver portion32upon sprinkler actuation, the receiver portion32is geometrically configured to surround and more preferably circumferentially surround the sprinkler frame12to preferably axially align the deflector assembly30with sprinkler axis A-A as shown inFIGS. 1 and 1Aover or during the entire translation. The receiver portion32may define a continuous structure surrounding the deflector assembly axis A-A. Alternatively, the receiver portion32may be a discontinuous structure, as seen in the deflector assembly30bofFIG. 2B. Accordingly, the receiver portion32may be defined by two or more spaced apart segments32a,32bwhich are arranged to receive and substantially surround the sprinkler frame12.

In one preferred embodiment, as seen inFIG. 2A, the receiver portion32is substantially circular cylindrical to conform, for example, to the intermediate portion18of the sprinkler frame10which may be cylindrical at its outer surface. Alternatively, the receiver portion32can define non-circular geometries provided the receiver is dimensioned to receive or surround the sprinkler frame12and permit the relative translation between the two components12,30. For example, the receiver portion32can define a rectangular, square or oval geometry, as seen for example inFIGS. 2Ai,2Aii and2Aiii, for receiving and surrounding the sprinkler frame10.

The deflector member34is shown generically as a substantially circular member; however, it should be understood that the deflector member34is preferably configured in a manner to distribute fluid (water) and address a fire in accordance with industry accepted standards. Accordingly, the deflector member34may define any deflector geometry such that the sprinkler assembly performs in accordance with one or more industry accepted performance standards. Provided the deflector member34can be coupled to the receiver portion32and sprinkler frame12in a manner and operation shown and described herein, the deflector member34may be defined by a known deflector geometry which satisfies one or more known industry performance standards.

For example, residential automatic fire protection sprinklers are typically designed to specific performance criteria or standards that have been accepted by the industry. The performance criteria establishes the minimum performance standards for a given sprinkler to be considered sufficient for use as a residential fire protection product. For example, Underwriters Laboratories Inc. (UL) “Standard for Safety for Residential Sprinklers for Fire Protection Service” (March 2008) (Rev. April 2012) (hereinafter “UL 1626”), which is incorporated herein in its entirety by reference thereto, is believed to be an accepted industry standard. The National Fire Protection Association (NFPA) also promulgates standards relating to residential fire protection such as, for example, NFPA Standard 13 (2013) (hereinafter “NFPA 13”), which is incorporated in its entirety herein by reference thereto. In order for a residential sprinkler to be approved for installation under NFPA Standards, such sprinkler typically must pass various tests, for example, tests promulgated by UL under UL 1626, in order to be listed for use as a residential sprinkler. Specifically, UL 1626 generally requires a sprinkler to deliver a minimum flow rate (gallons per minute or “gpm”) for a specified coverage area (square feet or “ft2”) so as to provide for a desired average density of at least 0.05 gpm/ft2. In one particular embodiment, the deflector member34may be configured as a known residential deflector provided it can be coupled to a receiver32by an extension member36as described herein. Exemplary pendent and horizontal sidewall deflectors are shown and described in U.S. Pat. Nos. 8,074,725; 7,201,234; 8,151,897; and U.S. Patent Application Publication Nos. 20090126950; 20100263883 each of which is incorporated by reference in its entirety.

Referring again toFIGS. 2A-2F, extending between the receiver portion32and the deflector member34is the extension member36. In one preferred embodiment, the extension member36preferably extends parallel to the deflector assembly axis B-B to define a substantially constant radius R to the assembly axis B-B. Accordingly, if the deflector member34defines a smaller diameter or width than the receiver portion32, the extension members may include connection members or portions38a,38bwhich angle inwardly toward the axis B-B and deflector member34to centralize the deflector member. Alternatively, the extension members36a,36bmay angle toward the assembly axis B-B such that the assembly tapers narrowly from the receiver portion32to the deflector member34as seen for example inFIG. 2Cso as to be substantially frusto-conical. Should the deflector member34alternatively define a width, diameter or surface area greater than the receiver portion32, the extension members36a,36bmay angle in a radially outward direction from the assembly axis B-B as seen for example inFIG. 2F. Thus, the extension member(s)36or portions thereof can extend or be disposed inside or outside the fluid flow path from the sprinkler frame outlet20b. In each of the preferred embodiments so far shown and described, the deflector member34is shown with its impact surface34anormal or orthogonal to the deflector assembly axis B-B. Alternate embodiments are shown inFIG. 3A-3C, in which the deflector is affixed to define an obtuse included angle α between the impact surface34aand the assembly axis B-B.

As shown, each of the extension member(s)36are preferably peripherally disposed about or with respect to each of the receiver portion32and the deflector member34. Each of the peripheral extension member(s)36present an inner surface39aand an outer surface39brelative to the assembly axis B-B as seen for example inFIG. 2C. One or more of the surfaces may be concave or convex. Moreover, the extension members36may present a continuous inner surface to the deflector axis or, alternatively, the member36may have one or more voids, such as for example, a through hole or slot37seen in each ofFIGS. 2D and 2E. In an alternate embodiment of the sprinkler10(not shown) in which the deflector assembly30remains fixed with respect to the sprinkler frame12, the opening37can engage a corresponding configured projection, such as a detent, on the frame12to form a locked mechanical engagement. Where the deflector assembly30includes multiple, axially spaced and aligned openings37, the projection on the frame12can be used to form selective engagement between the frame and the voids37so as to selectively locate a fixed distance between the deflector member34and the outlet18b.

As illustrated in the deflector assembly embodiments ofFIGS. 2E and 2F, the peripheral extension members36can define a constant or a variable geometry along its axial length. Accordingly, as seen in the deflector assembly30eofFIG. 2E, the extension member36defines a preferably constant width along its axial length. Alternatively, as seen inFIG. 2F, the peripheral extension member36emay taper narrowly in either the proximal or distal direction or both. It should be understood that the extension member can include one or more of the geometrical configurations described herein to define a continuous, or step wise extension member36from the receiver portion32to the deflector member34as illustrated inFIG. 2G.

For a deflector assembly30having more than one spaced apart extension member36, as seen for example, inFIG. 2C, the extension members36along with the receiver portion32and the deflector member34can define one or more windows or voids40a,40bin the deflector assembly30. The geometries of the components of the deflector assembly30can define the components individually, but they can also define or characterize the deflector assembly30as a whole. In the embodiments ofFIGS. 3A and 3C, the lengths of the extension member(s) of the deflector assemblies30g,30iare varied so as to skew or angle the deflector member34relative to the assembly axis B-B to define an obtuse included angle α therebetween. In addition to angularly orienting the deflector member34, the embodiments shown inFIGS. 3A-3Cshow that the extension member(s)36can vertically orient the deflector assembly30and its deflector member34. Accordingly, the extension member(s)36can be used to properly orient the sprinkler assembly10in a horizontal configuration. Thus, the components of the deflector assembly30, their surfaces and/or voids can individually or collectively define deflection surfaces of the assembly, which in combination with the deflector member34can define the performance of the sprinkler assembly10.

Preferred embodiments of the deflector assembly30are generally cylindrical or frustro-cylindrical in shape. The deflector assembly30can be integrally formed by cutting away portions of a cylindrical structure to define the receiver portion32, deflector member34, and extension member36. Alternatively, one or more components of the deflector assembly30may be formed from one or more planar blanks of material, i.e, a planar blank of bronze material. As described herein in greater detail, the blank may be cut or stamped, rolled and/or joined by welding, brazing or other joining method to form the deflector assembly30. Where receiver portion32is not a continuous structure as seen inFIG. 2B, the extension members36can be formed to bias the receiver portion32radially inward or outward to center the deflector assembly about the sprinkler frame12. In either form of construction, the extension members36are preferably formed peripherally with respect to the receiver portion32and the deflector member34.

Referring again toFIGS. 1 and 1A, the preferred sprinkler frame12is a body having internal and external surfaces which individually or together define a proximal portion14, a distal portion16and an intermediate frame portion18of the sprinkler frame12to space the proximal portion14from the distal portion16. The internal surface of the sprinkler frame12defines an internal fluid passageway20that extends axially from the proximal portion14preferably into the distal portion16. The fluid passage20has an inlet20ainto which water is supplied and an outlet20bfrom which the water is discharged for impacting the deflector assembly30. As shown in the illustrative embodiments ofFIGS. 4A and 4B, the fluid passage120,220can include a tapering portion that tapers narrowly in the distal direction and a constant diameter portion that is distal of and contiguous with the tapering portion. The passageway may alternatively have a constant width or taper at a constant rate, variable rate or combinations thereof along its entire length.

The fluid passage20of the sprinkler frame12, inlet20aand outlet20bpreferably define a sprinkler constant or K-factor which approximates the flow rate to be expected from an outlet of a sprinkler based on the square root of the pressure of fluid fed into the inlet of the sprinkler. As used herein and in the sprinkler industry, the K-factor is a measurement used to indicate the flow capacity of a sprinkler. More specifically, the K-factor is a constant representing a sprinkler's discharge coefficient that is quantified by the flow of fluid in gallons per minute (GPM) through the sprinkler passageway divided by the square root of the pressure of the flow of fluid fed to the sprinkler in pounds per square inch gauge (PSIG.). The K-factor is expressed as GPM/(PSI)1/2. Industry accepted standards, such as for example, the National Fire Protection Association (NFPA) standard entitled, “NFPA 13: Standards for the Installation of Sprinkler Systems” (2010 ed.) (“NFPA 13”) provide for a rated or nominal K-factor or rated discharge coefficient of a sprinkler as a mean value over a K-factor range. As used herein, “nominal” describes a numerical value, designated under an accepted standard, about which a measured parameter may vary as defined by an accepted tolerance ranging. When the sprinkler assembly10is configured as a residential sprinkler, the sprinkler frame and its internal passage20and outlet can be configured to define a K-factor ranging from a nominal 4.1 to a nominal 5.6 GPM/(PSI)1/2. In one or more preferred assemblies described herein, the sprinkler frame defines a nominal K-Factor of about 4 GPM/(PSI)1/2.

As seen in the illustrative embodiment of the sprinkler frame110ofFIG. 4A, the sprinkler passageway120radially can expand at its distal end, and more preferably distal of the outlet120b, to define a chamber113to house operational components of the sprinkler assembly110, such as for example, the seal assembly150and the thermally responsive trigger assembly160. One preferred embodiment of the thermal trigger assembly160includes two lever arms or members162. The lever arms162cooperate with a thermally sensitive plate assembly164to support the seal assembly150in the outlet for maintaining a static fluid pressure preferably ranging from about 175 psi. to about 500 psi. at the outlet20bof the fluid passage upon placement of the sprinkler assembly10in service. The seal assembly150can include a bridge152which is engaged with a closure assembly154. A preferred seal assembly and a thermally responsive trigger assembly are shown and described in U.S. Patent Application Publication No. 20100263883, which is incorporated by reference in its entirety. An alternate seal assembly and a thermally responsive trigger assembly are shown and described in U.S. Patent Application Publication No. 20090126950, which is incorporated by reference in its entirety.

Shown inFIGS. 4A and 4Bis a preferred embodiment of a sprinkler assembly110which includes a sprinkler frame112configured to control or limit the axial translation of the deflector assembly130with respect to the sprinkler frame112. In addition to the seal assembly150, and a thermally responsive trigger assembly160, as previously described, the sprinkler assembly110can include a supporting member170surrounding the sprinkler frame112.

The sprinkler frame112includes a proximal end portion114, a distal end portion116, and a flange115formed between the proximal and distal ends112,114that includes a centering portion117. The distal end portion116preferably includes an external formation116aalong the outer surface of the distal end portion116that circumscribes the sprinkler frame112. The external formation116apreferably extends radially outward so as to define a diameter or width at the distal portion of the sprinkler frame that is greater than the receiver portion132of the deflector assembly130. Accordingly, the distal portion114of the sprinkler frame112can be configured to limit the distal translation of the deflector assembly along the sprinkler frame112.

Shown inFIG. 4Ais the exemplary sprinkler assembly110in an unactuated state. The deflector assembly130is shown with its receiver portion132preferably circumferentially surrounding the intermediate portion118of the sprinkler frame112adjacent the flange115and centering portion117. The deflector assembly130can be supported in its first unactuated position by, for example, a cover plate assembly such as for example a cover plate304as seen inFIG. 5. Referring again toFIG. 4A, in a preferred configuration of the receiver portion132the receiver portion defines a first width or diameter D1and the annular formation116adefines a second diameter or width D2that is preferably greater than the first diameter D1to limit the translation of the deflector assembly130. Although the distal formation116ais shown as being circular or annular about the sprinkler frame, the formation116amay be rectangular or non-circular in its formation at the distal end provide it can control or limit the axial translation of the deflector assembly as described herein.

Shown inFIG. 4B, is the sprinkler assembly110in an actuated state in which the deflector assembly130has translated axially and distally from its first unactuated position to its second actuated position. Given the relative dimensions between the receiver portion132of the deflector assembly130and the annular formation116a, the annular formation116acontrols or limits the axial travel of the deflector assembly130upon actuation so as to locate the deflector assembly130in its second actuated position and more preferably locates the deflector member134at a desired distance Y from the outlet120b. In the actuated position, the deflector assembly130and more preferably the receiver portion132remain circumferentially disposed about the sprinkler frame. The annular formation116ais preferably formed discontinuously about the distal portion of the sprinkler116so as to define a channel116bto accommodate and guide the extension member136of the deflector assembly130. Alternatively, the annular formation116acan be continuous about the distal portion116provided the formation116acan limit or control the translation of the deflector assembly130.

Shown inFIG. 5is another preferred embodiment of a sprinkler assembly210having a sprinkler frame212, a deflector assembly230for preferred axial translation with respect to the sprinkler frame212upon sprinkler actuation. The preferred assembly210includes a support member or cup270disposed about the sprinkler frame212and deflector assembly230. The support cup270is a preferably tubular structure and more preferably a substantially circular cylindrical tubular structure having an internal surface272and an outer surface274.

In the particular embodiment of the sprinkler frame212, the frame includes a flange215disposed between the proximal portion214and the distal portion216. A centering element217is preferably formed about an intermediate portion of the sprinkler frame212and more preferably formed integrally with the flange215. The centering element217can define a transition or projection in the distal direction from the flange215to define a shoulder or alternatively an annular channel219preferably centered about the internal passage280. The annular channel219is preferably with a depth and a width to engage, support and center the support cup270about the sprinkler frame212. The support cup170surrounds and preferably centrally circumscribes the sprinkler frame212to preferably define an annular space280therebetween. The support cup270extends distally and preferably terminates proximal to or even with the distal terminal end of the sprinkler frame212. Alternatively, the support cup270can extend distally of the terminal end of the sprinkler frame212provided it does not interfere with the actuated position of the deflector member134or the fluid discharge from the outlet.

In the exemplary embodiment of the sprinkler assembly210inFIG. 5, the receiver portion232is dimensioned and configured with a width or diameter so as to receive and be radially engaged with the sprinkler frame212. Moreover, the receiver is preferably dimensioned so as to translate within the annular space280between the frame212and the support cup270. Again, the external portion of the sprinkler frame about its distal portion216can be dimensioned so as to axially control or limit the travel of the deflector assembly230and its deflector member234. Preferably, the distal portion216defines a diameter or width greater than the intermediate portion218of the sprinkler frame212to define the chamber213of the sprinkler assembly210for housing operational components of the sprinkler assembly as previously described. As with the other preferred embodiments previously described, the deflector member234is supported or spaced from the receiver portion232by at least one preferably peripheral extension member236.

The sprinkler assemblies described herein can be configured as a concealed sprinkler and more preferably a residential concealed sprinkler. As shown inFIG. 5, the sprinkler assembly210includes a cover assembly300having an escutcheon302and a cover plate304. In operation, the cover plate304disengages from the escutcheon302in response to a fire event, and the thermally responsive trigger assembly (not shown) actuates to release the seal assembly (not shown) to allow water to discharge from the outlet118b,218band permit axial translation of the deflector assembly130,230.

Each of the previously described embodiments of the sprinkler assembly shows a deflector that translates with respect to the sprinkler frame. Alternatively, the sprinkler frame can include a detent or other projecting formation along the outer surface of the sprinkler frame to affix the deflector assembly with respect to the sprinkler frame. Shown inFIG. 4Bis an illustrative embodiment of a projection116′ to cooperate with an opening137in the deflector assembly130to affix the deflector assembly130with respect to the sprinkler frame112. The opening can be configured as a through hole as previously described with respect toFIG. 2D. If the opening137is alternatively configured as a slot as seen, for example, inFIG. 2E, the projection116′ and slot engagement can again provide for a translating deflector assembly in which the axial translation is defined or limited by the axial length of the slot.

Referring again to the general sprinkler assembly10ofFIGS. 1 and 1A, the proximal portion14of the sprinkler frame12is preferably configured to couple to the sprinkler assembly10to an end of a pipe or pipe fitting of a fluid supply line in the piping network. Accordingly, the proximal portion14can includes an external thread, such as for example, nominally sized tapered National Pipe Thread (NPT). The external thread preferably ranges in nominal sizes: ½ inch-1¼ inch. The sprinkler frame12is preferably formed from a plastic material, such as for example, Chlorinated Polyvinyl Chloride (CPVC) material, more specifically CPVC material per ASTM F442 and substantially similar to the material used to manufacture the BLAZEMASTER® CPVC sprinkler pipe and fittings as shown and described in the technical data sheet, TFP1915: “Blazemaster CPVC Sprinkler Pipe and Fittings Submittal Sheet” (June 2008), which is incorporated by reference in its entirety. Alternatively, the frame can be formed, cast and/or machined from known materials used in the manufacture of sprinkler assemblies, such as cast iron or bronze. In one preferred configuration and installation of the sprinkler assembly, the proximal portion14can include an external course pipe thread for engagement with a corresponding internal threaded pipe fitting such as for example a plastic pipe fitting or component as shown and described in PCT Publication WO2013/010098, PCT Application No. PCT/US2012/046717, filed on 13 Jul. 2012, which is incorporated by reference in its entirety. Preferably each of the external thread40and internal thread28are straight pipe threads such as for example, American Standard straight pipe thread (NPS) or cylindrical threads such as for example, Whitworth-pipe thread, DIN/ISO 228.

Shown inFIG. 6is an illustrative embodiment of a preferred fire protection sprinkler assembly300. The preferred assembly300includes a sprinkler frame312and a deflector assembly330circumferentially disposed about the sprinkler frame312. The deflector assembly330is preferably configured to translate relative to the sprinkler frame312. The preferred assembly300includes a support member370disposed about the sprinkler frame312and deflector assembly30. In one particular embodiment, the support member370is configured to guide and center the deflector assembly330about the sprinkler frame312. More preferably, the support member370defines the first position of the deflector assembly330in the unactuated state of the sprinkler assembly300and the second position of the deflector assembly30in the actuated state.

The deflector assembly330can be configured with any one of the features shown in the deflector assemblies ofFIGS. 2A-2F and 3A-3C. In one preferred embodiment, the receiver portion332is substantially circular cylindrical to conform to, for example, a circular cylindrical interior surface of the support member370.

Shown inFIG. 7Ais the sprinkler assembly400in an actuated state. The support cup70is a tubular structure and more preferably a substantially circular cylindrical tubular structure having an internal surface72and an outer surface74. Although the outer surface74is shown as continuous, it should be understood that the support can include one or more through holes or openings extending from its outer surface74through to its inner surface72. The support cup70preferably engages the sprinkler frame12. In one embodiment of the sprinkler frame12, the frame includes a flange15disposed between the proximal portion14and the distal portion16. A centering element17is preferably formed about an intermediate portion of the sprinkler frame12and more preferably formed integrally with the flange15. The centering element17can define a transition or projection in the distal direction to define a shoulder19. The proximal portion of the supporting cup70is preferably engaged with and centered on the flange15and more preferably engaged and centered about the centering element17so that the support cup70surrounds and preferably centrally circumscribes the sprinkler frame12to preferably define an annular space80therebetween. Alternatively to a shoulder19, the centering element17can include a formed annular channel with a depth and a width to engage, support and center the proximal end of the support cup70about the sprinkler frame12as seen, for example, inFIG. 7B. Referring again to the exemplary assembly10ofFIG. 7A, the support cup70extends distally and preferably terminates proximal to or even with the distal terminal end of the sprinkler frame12. Alternatively, the support cup70can extend distally of the terminal end of the sprinkler frame12provided it does not interfere with the actuated position of the deflector member34or the fluid discharge from the outlet420b.

Located within the annular space80is the receiver portion32of the deflector assembly30. Shown in phantom is the receiver portion32in its first position adjacent the flange15to locate the deflector member34in its unactuated position at its minimum distance Ymin from the outlet420b. In its first position, the receiver portion32preferably circumferentially surrounds the intermediate portion18of the sprinkler frame12. The receiver portion32is shown in solid line in its second position axially spaced from the flange15to locate the deflector member34in its actuated position at its maximum distance Ymax from the outlet420b. In the actuated position, the deflector assembly30and more preferably the receiver portion32remain circumferentially disposed about the sprinkler frame.

The receiver portion32may be radially engaged with or radially spaced from either the sprinkler frame12, the support cup70or both. Accordingly, the annular channel80can define a guide rail for the receiver portion32and the deflector assembly30to translate from the first unactuated position to the second actuated position. For example, as shown inFIG. 4A, the receiver portion32is dimensioned and configured with a width or diameter so as to engage the inner surface72of the supporting member cup70. The support cup70preferably includes an annular shoulder73that extends circumferentially about the inner surface72and radially toward the sprinkler axis to limit axial translation of the deflector assembly30. Moreover, the shoulder can be formed continuously about the sprinkler axis. Alternatively, the shoulder can be discontinuous so as to define or include an axially extending notch or recess75, as seen inFIG. 6, to guide the preferably peripheral extension members36in translation. As shown inFIG. 7A, the sprinkler assembly400includes a cover assembly330having an escutcheon332and a cover plate334, in which the cover plate334disengages from the escutcheon332in response to a fire event.

Referring again toFIG. 6, a preferred horizontal sidewall deflector assembly330is generically shown. Shown inFIGS. 8-8Dis a preferred embodiment of a horizontal deflector434for use in a preferred deflector assembly430. The deflector member434is a preferably unitary member having a face plate portion434aand a canopy portion434bangled with respect to the face plate434aand extending distally from the face plate434a. The canopy portion434bis preferably disposed orthogonally with respect to the face plate434a. With reference toFIG. 8A, shown is a partial isometric view of the deflector assembly430with the preferred deflector member434(the canopy has been removed for clarity). In the assembly, the receiver432and extension members orient the deflector member so as to define a distal surface436aof the face plate434aand an opposite proximal surface436bto be opposed to the sprinkler outlet20b. Preferably, the proximal surface436aof the face plate434aincludes a portion that intersects and is more preferably perpendicular to the sprinkler axis A-A defined by the passageway20and its outlet20b. Given the configuration of the deflector assembly described herein, the extension members are preferably disposed laterally of the sprinkler axis A-A. Thus, with preferably no structures located between the outlet20bof the sprinkler frame12and the proximal surface436bof the deflector member in the actuated state of the sprinkler, as described herein, the proximal surface436aof the deflector assembly presents an initial impact surface for fluid discharge from the outlet. Thus, the preferred embodiments of the sprinkler assembly preferably provide for a unitary deflector member that, in a horizontal arrangement, presents an impact surface which is the first surface impacted by a fluid flow discharge without the flow being impeded by other structures.

Referring toFIG. 8Aand the distal view of the deflector member434inFIG. 8C, the deflector is preferably symmetrical about a plane P. In the sprinkler assembly400, the sprinkler axis A-A is preferably disposed in the plane P. As shown inFIG. 8C, the face plate434ahas a preferably arcuate peripheral edge438that is more preferably defined by a circumference of a circle C having a center axis C-C preferably located on the surfaces436a,436bof the face plate434. The center C is preferably parallel to and more preferably coaxially aligned with the deflector assembly axis B-B and/or the sprinkler axis A-A. The peripheral edge438may be continuous or more preferably includes one or more slots. In one preferred embodiment, as shown inFIG. 8C, the peripheral edge438includes two slots440a,440bwhich extend toward the plane of symmetry P.

In addition to the peripheral slots, the deflector member434preferably includes a plurality of internal surfaces including a plurality of connected parallel internal edges to define a closed-form fluid flow aperture450of the deflector member434. The flow aperture450is preferably formed and located in the deflector assembly430such that the aperture does not intersect the sprinkler axis A-A so that the proximal surface of the face plate defines the preferably initial impact surface of the sprinkler assembly400. With the closed formed aperture450formed by a plurality of linear edges, the aperture450can be defined by a plurality of overlapping voids. In the preferred embodiment of the deflector member434, the aperture450includes a pair of lateral voids452a,452bdisposed about and extending parallel to the axis of symmetry. Preferably interconnecting the pair of lateral voids452a,452bis a central void454having a length extending perpendicular to the axis of symmetry and a width extending parallel to the axis of symmetry. Preferably, the plurality of parallel edges define the central void454such that the central void has a medial width greater than a lateral width. Further preferably formed between each lateral void452a,452band the central void454is an angular slot456a,456b. The slots456a,456bare preferably angled toward the plane of symmetry and formed so as to include a linear portion and a circular portion with the circular portion being medial of the linear portion to terminate the slots456a,456b. In the preferred formation of the deflector member434, the central void454is preferably formed between the canopy434band the circular portions456a,456b.

The deflector member434is preferably a unitary member. Accordingly, the deflector member is preferably cut or punched from a blank434′, as seen for example inFIG. 8D. As previously noted, the deflector assembly30can be integrally formed by cutting away portions of a cylindrical structure to define the receiver portion32, deflector member34, and extension member36. Alternatively, one or more components of the deflector assembly30may be formed from one or more blanks of material, i.e., a bronze blank of material. The planar blank434′ is preferably cut or punched to define the face plate portion434aand the canopy434bwith the bend line458defined therebetween. Preferred embodiments of the deflector assembly430are generally cylindrical or frustro-cylindrical in shape. The blank may be cut or stamped, rolled and joined by welding, brazing or other joining method to form the sprinkler assembly400. Where receiver portion32is not a continuous structure as seen inFIG. 8A, the extension members36can be formed to bias the receiver portion32radially inward or outward to center the deflector assembly about the sprinkler frame12.

The preferred fluid flow aperture450is also cut or punched into the blank434′. As shown, the aperture450crosses the bend line458such that the aperture is preferably formed in each of the face place434aand the canopy portion434b. The bend line458preferably defines a chord length L of the circle C, which defines the diameter of the preferably partially circular face plate434a. Preferably the bend line458defines a cord length L to diameter ratio of about 0.9:1. Referring toFIG. 8B, the bend line458and the aperture450result in the canopy portion having a distal edge460that extends preferably parallel to the bend line458. The canopy further preferably includes a proximal edge462. Preferably, the face plate434aand its proximal surface436bis disposed axially between the distal edge460and the proximal edge462.

Referring again to the partial view of the deflector assembly shown inFIG. 8A, the receiver portion32defines a central axis B-B of the deflector assembly430and the extension members couple the deflector member434to the receiver32so as to preferably centrally align the deflector member434along the central axis B-B as illustratively shown in the deflector assembly430ofFIG. 8A. Because the sprinkler frame12translates within the receiver portion32upon sprinkler actuation, the receiver portion32is geometrically configured to surround and more preferably circumferentially surround the sprinkler frame12to preferably axially align the deflector assembly430with sprinkler axis A-A as shown inFIG. 1over or during the entire translation. The receiver portion32may define a continuous structure surrounding the deflector assembly axis A-A. Alternatively, the receiver portion32may be a discontinuous structure, as seen in the deflector assembly430ofFIG. 8A. Accordingly, the receiver portion32may be defined by two or more spaced apart segments32a,32bwhich are arranged to receive and substantially surround the sprinkler frame12.

In one preferred embodiment, as seen inFIG. 8A, the receiver portion32is substantially a circular cylindrical or annular member to conform to, for example, a circular cylindrical interior surface of the support member or cup70. Preferably, the receiver portion32defines a diameter that is about equal to the diameter D of the face plate434a. Thus, the extension members36preferably extend parallel to and preferably radially spaced from the deflector assembly axis B-B or sprinkler axis A-A. Accordingly, if the deflector member434defines a smaller diameter or width than the receiver portion32, the extension members may include connection members or portions438a,438bwhich angle inwardly toward the axis B-B and deflector member434to centralize the deflector member. Alternatively, the extension members436may angle toward the assembly axis B-B such that the assembly tapers narrowly from the receiver portion32to the deflector member434so as to be substantially frusto-conical. Should the deflector member434alternatively define a width, diameter or surface area greater than the receiver portion32, the extension members436may angle in a radial direction away or toward the assembly axis B-B provided the extension members remain clear of the fluid discharge path in the actuated state of the sprinkler so that the proximal surface436bdefines the initial or first impact surface of the sprinkler upon actuation.

The deflector member434and its fluid flow aperture450and slots440a,440bare preferably configured in a manner to distribute fluid (water) and address a fire in accordance with industry accepted standards. Accordingly, the deflector member434may define a deflector geometry such that the sprinkler assembly performs in accordance with one or more industry accepted performance standards such as, for example, the residential automatic fire protection sprinkler standards previously described.

Referring toFIGS. 8D and 8Cand the formation of the preferred aperture450, the lateral voids452a,452bare preferably rectangular extending parallel to the bisecting plane P having a first end proximate the bend line458and a second end proximate the slots440a,440b. Each rectangular lateral void452a,452bdefines a preferred width of about 0.05 inch and an axial length H of about 0.5 inch. The central void454is an elongate void that preferably extends parallel to the bend line458to define an axial length W1of about 0.6 inch and more preferably 0.56 inch to define a preferred distance between the lateral voids452a,452b. The centered portion of the central void454defining the maximum width of the void454has a preferred axial length W2of about 0.22 inch. Preferably laterally disposed about the center portion of the central void454are angular slots456a,456b. The angular slots456a,456bpreferably include a linear portion having a length x of about 0.07 inch from the lateral void to the circular portion of the angled slot. The circular portion preferably defines a radius of curvature R of about 0.05 inch. Each of the lateral slots456a,456bhas a preferred width that is equal to the radius of curvature at its closed end which is preferably about 0.05 inch. The lateral slots456a,456bare preferably disposed below the void450with one lateral edge linearly aligned with the second end of the lateral voids452a,452b.

Shown inFIG. 8Eis an illustrative embodiment of a preferred deflector assembly cut from a planar blank of material. More specifically shown is a one piece planar rectangular blank, from which, each of the deflector member434, extension members36and the receiver segments32a,32bis cut or stamped. The deflector member434, extension members36and the receiver segments32a,32bare cut adjacent one another to facilitate formation of the sprinkler assembly. For example, the extension members36and receiver segments32a,32bare cut or stamped preferably symmetrically about the deflector member434. Moreover, the extension members36are cut so as to be disposed between the receiver segments36and the deflector member434so that the extension members36axially space the deflector member434from the receiver segments32in the final formation of the deflector assembly430. Alternatively, the blank can be cut so that a single receiver segment is cut at the terminal end of one of the extension members36. Additionally, the extension members are cut or stamped so that the extension members36terminate at the peripheral edges of each of the deflector member434and the receiver segments32a,32b. The transitions between the extension members36and the peripheral edges of the deflector member434and the receiver segments further preferably define a bend line for formation of the deflector assembly430. The receiving segment are further preferably bent or curved for appropriately receiving the sprinkler frame in a manner as previously described.

Each of the features of the deflector member434are also preferably formed and/or cut from the one-piece blank. More specifically, each of the face plate portion434aand canopy434bare cut or stamped from the blank. The face plate portion434ais cut or stamped to include the slots440a,440balong the peripheral edge and the central fluid flow aperture450previously described. The canopy434bis cut with the face plate portion434ato provide for the bend line so that the canopy434bcan be accordingly angled with respect to the face plate portion in the final formation of the deflector assembly430. Accordingly, with the deflector features cut from the blank, the blank can be appropriately bent at the junctions between the deflector features so as to form any one of the preferred deflector assemblies previously described. AlthoughFIG. 8Eand its description are made with respect to the deflector assembly ofFIGS. 8-8Dit should be understood that the described method of forming is applicable to any of the deflector assemblies described herein.

Shown inFIG. 9Ais the sprinkler assembly400including the support member or cup70. The support cup70is a tubular structure and more preferably a substantially circular cylindrical tubular structure having an internal surface72and an outer surface74. The surfaces can be continuous or alternatively discontinuous. As shown inFIG. 9A, the receiver portion32is dimensioned and configured with a width or diameter so as to engage the inner surface72of the supporting member or cup70. The support cup70preferably includes an annular shoulder73that extends circumferentially about the inner surface72and radially toward the sprinkler axis to limit axial translation of the deflector assembly30. The sprinkler assemblies described herein can be configured as a concealed sprinkler and more preferably a residential concealed sprinkler. As shown inFIG. 9A, the sprinkler assembly400includes a cover assembly504having a cover plate for engagement about the outer surface74of the distal portion of the support cup70. The preferred cover assembly504includes a retainer ring504aand a cover plate504bwith a fusible solder material coupling the cover plate504bto the retainer ring. The outer surface74at the distal portion of the support cup70preferably includes a reduced outer diameter to preferably define a shoulder or notched transition along the outer surface74to facilitate the pushed-on engagement of the cover plate504about the support cup. The retainer ring504apreferably forms a press-fit engagement about the support cup70to maintain the cover plate disposed about the support cup70. The outer surface74or the retainer ring504amay be alternatively configured, for example, including cooperating bumps, ridges and recesses to provide for an alternate mechanical engagement for retaining the cover plate assembly about the support cup. In the event of a sufficiently intense fire, the solder of the cover plate assembly504melts and the cover plate504bdisengages from the retainer ring504a.