Silencing range hood check valve

Abstract

A silencing range hood check valve comprises a valve body, a valve element and an air outlet connector, and the valve body comprises a bottom square annular seat, a frustum-shaped body part, a top circular ring seat, a radial seat frame and a hinge seat arranged on the radial seat frame; the valve core comprises a semicircular core plate and a rotating shaft; the air outlet connector comprises a connector part, a connecting cavity and a silencing pipe arranged at the bottom of the connector part, and the diameter of the connecting cavity is larger than that of the connector part. A gap between the hush pipe and the connector part forms a smoke exhaust pipe inserting groove of the range hood; the radius of the silencing pipe is greater than that of the semicircular core plate; and the connecting cavity is detachably connected with the top circular ring seat. And by arranging the silencing pipe on the air outlet interface, the noise during smoke exhaust is reduced.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a check valve. Background Art

[0002] At present, the existing technology is Chinese patent 201820042694.9, a check valve and smoke pipe assembly of a range hood, including a check valve and a smoke pipe, the check valve includes a valve body, a valve core, a valve core seat and an air outlet interface; the smoke pipe includes a threaded body, an upper interface and a lower interface; the lower end of the lower interface of the smoke pipe is provided with a step; the upper part of the outer circumferential surface of the air outlet interface is provided with a stop buckle body; it also includes a fastening ring, the fastening ring includes a cylindrical body and an annular connecting seat surrounding the cylindrical body, and a buckle hole is provided on the annular connecting seat; the lower interface is inserted into the air outlet interface, and the lower end is fitted with the bottom plate of the air outlet interface; the cylindrical body of the fastening ring is inserted into the air outlet interface, and the lower end of the cylindrical body cooperates with the step support; the stop buckle body is embedded with the buckle hole. The problem is: the noise entering the smoke pipe from the air outlet interface is large. Summary of the invention

[0003] The purpose of the present invention is to provide a noise-absorbing check valve for a range hood, which has the characteristics that an air outlet interface plays a noise-absorbing role and reduces noise.

[0004] The present invention is implemented as follows: a silencer check valve for a range hood comprises a valve body, a valve core and an air outlet interface, the valve body comprises a bottom square annular seat, a frustum-shaped body portion, a top circular annular seat, a radial seat frame and a hinged seat arranged on the radial seat frame; a countersunk hole is arranged in the top circular annular seat, and the bottom plate of the countersunk hole is flush with the upper surface of the radial seat frame; the valve core comprises a semicircular core plate and a rotating shaft; the special feature thereof is that the air outlet interface comprises an interface portion, a connecting cavity and a silencer pipe arranged at the bottom of the interface portion, and the diameter of the connecting cavity is larger than the diameter of the interface portion; the gap between the silencer pipe and the interface portion constitutes a smoke exhaust pipe plug-in slot of the range hood; the radius of the silencer pipe is larger than the radius of the semicircular core plate;

[0005] The connecting cavity is detachably connected to the top circular ring seat.

[0006] The special feature of the noise-absorbing smoke exhaust fan check valve is that a tooth groove is provided at the upper end of the noise-absorbing pipe.

[0007] The special feature of the silencer check valve for range hoods is that the upper end surface of the silencer pipe is in an arc shape and the upper end is in a wave shape.

[0008] The special feature of the noise-reducing range hood check valve is that a locking block is provided on the outer circumferential surface of the top circular ring seat;

[0009] A locking seat is provided on the inner wall of the connecting cavity, and a locking groove with an open end is provided on the locking seat;

[0010] The locking block is locked with the locking groove.

[0011] The special feature of the noise-reducing range hood check valve is that an axial stop protrusion is provided in the locking groove; and the locking block is located in the locking groove between the closed end of the locking groove and the axial stop protrusion.

[0012] The special feature of the noise-reducing check valve for range hoods is that the upper end of the noise-reducing pipe is closed.

[0013] The special feature of the silencer check valve for range hoods is that the upper end of the silencer pipe is a spherical curved surface and is closed.

[0014] The special feature of the noise-absorbing range hood check valve is that an axial reinforcement plate and a connecting hole penetrating the axial reinforcement plate and the interface portion are provided on the outer surface of the interface portion.

[0015] The invention discloses a noise-reducing check valve for a range hood. The arrangement of a noise-reducing pipe on an air outlet interface reduces noise during smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the present invention.

[0017] Figure 2 yes Figure 1 A-A view of.

[0018] Figure 3 It is a perspective view of the present invention.

[0019] Figure 4 It is one of the three-dimensional exploded views of the present invention.

[0020] Figure 5 It is the second of the three-dimensional exploded diagrams of the present invention.

[0021] Figure 6 It is three-dimensional exploded view of the present invention. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1 , Figure 2 As shown, a silencer check valve for a range hood comprises a valve body 1, a valve core 2 and an air outlet interface 3. The valve body 1 comprises a bottom square annular seat 11, a frustum-shaped body portion 12, a top circular annular seat 13, a radial seat frame 14 and a hinge seat 15 arranged on the radial seat frame; a countersunk hole is arranged in the top circular annular seat 15, and the bottom plate of the countersunk hole is flush with the upper surface of the radial seat frame; the valve core 2 comprises a semicircular core plate 21 and a rotating shaft 22; both ends of the rotating shaft are rotatably matched with the hinge seat, and in static state, the radial seat frame 14 and the bottom plate of the countersunk hole support the semicircular core plate 21;

[0025] The air outlet interface 3 includes an interface portion 31, a connecting cavity 32 and a silencer pipe 33 arranged at the bottom of the interface portion 31. The diameter of the connecting cavity 32 is larger than the diameter of the interface portion 31. The gap between the silencer pipe 33 and the interface portion 31 constitutes a smoke exhaust pipe plug-in slot 34 of the range hood. The radius of the silencer pipe 33 is larger than the radius of the semicircular core plate 21. With such a design, when the smoke plate is working, the semicircular core plate 12 extends out from the silencer pipe 33.

[0026] The connecting cavity 32 is detachably connected to the top circular ring seat 13. When the range hood is working, the semicircular core plate 21 extends out from the muffler pipe 33, and the semicircular core plate 21 and the muffler pipe 33 work together to achieve muffler and noise reduction.

[0027] The upper end of the muffler pipe 33 is provided with a tooth groove.

[0028] Or the upper end surface of the muffler pipe 33 is arc-shaped and the upper end is wavy.

[0029] The upper end of the muffler pipe 33 is closed.

[0030] As a further improvement of the present invention: the upper end of the muffler pipe 33 is spherically curved and closed.

[0031] As a further improvement of the present invention: a locking block 131 is provided on the outer circumferential surface of the top circular ring seat 13;

[0032] A locking seat 321 is provided on the inner wall of the connecting cavity 32, and a locking groove 322 with an open end is provided on the locking seat;

[0033] The locking block 131 is locked with the locking groove 322;

[0034] As a further improvement of the present invention: an axial stop protrusion 323 is provided in the locking groove 322; the locking block 131 is located in the locking groove 322 between the closed end of the locking groove 322 and the axial stop protrusion 323, thereby preventing the locking block 131 from loosening.

[0035] The outer surface of the interface part 31 is provided with an axial reinforcing plate 311 and a connecting hole 312 penetrating the axial reinforcing plate 311 and the interface part 31. When in use, the screw passes through the connecting hole 312 and is screwed into the smoke pipe. With such a structure, the smoke pipe is fixed and the vibration of the smoke pipe is reduced.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A noise-reducing check valve for a range hood, comprising a valve body, a valve core and an air outlet interface, wherein the valve body comprises a bottom square annular seat, a frustum-shaped body portion, a top circular annular seat, a radial seat frame and a hinged seat arranged on the radial seat frame; the valve core comprises a semicircular core plate and a rotating shaft; and the characteristics are: The air outlet interface includes an interface portion, a connecting cavity and a silencer pipe arranged at the bottom of the interface portion, the diameter of the connecting cavity is larger than the diameter of the interface portion; the gap between the silencer pipe and the interface portion constitutes a smoke exhaust pipe plug-in slot of the range hood; the radius of the silencer pipe is larger than the radius of the semicircular core plate; The connecting cavity is detachably connected to the top circular ring seat.

2. The noise-reducing check valve for range hoods according to claim 1, characterized in that: The upper end of the muffler pipe is provided with a tooth groove.

3. The noise-reducing check valve for range hoods according to claim 1, characterized in that: The upper end surface of the muffler pipe is in an arc shape, and the upper end is in a wave shape.

4. The noise-reducing check valve for range hoods according to claim 1, characterized in that: A locking block is provided on the outer circumferential surface of the top circular ring seat; A locking seat is provided on the inner wall of the connecting cavity, and a locking groove with an open end is provided on the locking seat; The locking block is locked with the locking groove.

5. The noise-reducing check valve for range hoods according to claim 4 is characterized by: An axial stop protrusion is arranged in the locking groove; and the locking block is located in the locking groove between the closed end of the locking groove and the axial stop protrusion.

6. A noise-reducing check valve for a range hood according to claim 1, 2, 3, 4 or 5, characterized in that: The upper end of the muffler pipe is closed.

7. A noise-reducing check valve for range hoods according to claim 1, 2, 3, 4 or 5, characterized in that: The upper end of the muffler pipe is spherically curved and closed.

8. The noise-reducing check valve for range hoods according to claim 1, characterized in that: The outer surface of the interface portion is provided with an axial reinforcement plate and a connection hole penetrating the axial reinforcement plate and the interface portion.

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