A dual fuel oven valve without nozzle replacement

Abstract

A dual-fuel oven valve without nozzle replacement includes a valve body, a valve core, a valve stem, a pressure plate pressure spring and a valve cover. The valve body also includes an air guide cavity, a conversion valve connecting the valve core cavity and the air guide cavity, and an air outlet cavity. The nozzle includes a natural gas nozzle and a liquefied gas nozzle. The liquefied gas nozzle is arranged at the suspended end of the valve core cavity, and the natural gas nozzle is arranged at the air outlet end of the air outlet cavity. The axes of the liquefied gas nozzle and the natural gas nozzle coincide. The air guide hole corresponds to the conversion valve. When the conversion valve is in a closed state, the liquefied gas flows out through the liquefied gas nozzle, the air outlet cavity and the natural gas nozzle. When the conversion valve is open, the natural gas enters the air outlet cavity through the core body, the air guide hole, the conversion valve and the air guide cavity, and the natural gas enters the air outlet cavity through the core body and the liquefied gas nozzle. The natural gas is supplied to the gas oven through the natural gas nozzle. The air guide cavity, the air outlet cavity and the conversion valve are arranged, and the natural gas nozzle and the liquefied gas nozzle are connected in series. When conversion is required, the conversion valve can be operated with a screwdriver, which is convenient to use.

Description

Technical Field

[0001] The invention relates to a gas valve of a gas oven. Background Art

[0002] At present, the prior art provides a oven valve, including a valve body, a valve core, a valve stem, a pressure plate, a pressure spring and a valve cover. The valve body includes a valve core cavity and an air inlet interface communicating with the valve core cavity. A nozzle is provided at the air outlet end of the valve body, and a valve stem channel is provided on the valve cover. The valve stem includes a valve stem portion, a baffle and a waist-shaped driving plate portion. A waist-shaped hole is provided on the pressure plate. The valve core includes a driving cylinder portion with a radial plug-in groove and a core portion with an opening at one hollow end. The core portion is provided with an air inlet hole and the end opening is an air outlet. The valve stem portion extends to the valve cover through the valve stem channel, and the driving plate portion passes through the waist-shaped hole and the pressure spring on the pressure plate. The driving plate portion cooperates with the radial plug-in groove on the driving cylinder portion. The problem is that when used for different gas sources such as natural gas and liquefied gas, different nozzles need to be replaced, and the conversion is inconvenient when using different gas sources. Summary of the invention

[0003] The purpose of the present invention is to provide a dual-fuel oven valve without nozzle replacement, which can be switched according to different gas sources, does not require nozzle replacement, and is easy to use.

[0004] The present invention is realized as follows: a dual-fuel oven valve without nozzle replacement comprises a valve body, a valve core, a valve stem, a pressure plate pressure spring and a valve cover, the valve body comprises a valve core cavity and an air inlet interface communicating with the valve core cavity, a nozzle is arranged at the air outlet end of the valve body, and a valve stem channel is arranged on the valve cover; the valve stem comprises a valve stem portion, a baffle plate and a waist-shaped driving plate portion; a waist-shaped hole is arranged on the pressing plate; the valve core comprises a driving cylinder portion with a radial plug-in groove and a core portion with an opening at one hollow end, an air inlet hole is arranged on the core portion, and the end opening is an air outlet, the valve stem portion passes through the valve stem channel and extends to the valve cover, the driving plate portion passes through the waist-shaped hole and the pressure spring on the pressing plate, and the driving plate portion cooperates with the radial plug-in groove on the driving cylinder portion; the special feature is that the valve body also comprises an air guide cavity, a conversion valve connecting the valve core cavity and the air guide cavity, and an air outlet cavity, the air outlet cavity is connected to the suspended end of the valve core cavity and is in a straight line; one end of the air guide cavity is connected to one end adjacent to the valve core cavity and the valve cover, and the other end is connected to the air outlet cavity;

[0005] The nozzles include natural gas nozzles and liquefied gas nozzles.

[0006] An air guide hole is provided at one end of the core body adjacent to the driving cylinder.

[0007] The liquefied gas nozzle is arranged at the suspended end of the valve core cavity, and the natural gas nozzle is arranged at the gas outlet end of the gas outlet cavity, and the axes of the liquefied gas nozzle and the natural gas nozzle coincide with each other; the gas guide hole corresponds to the conversion valve; when the conversion valve is in a closed state, the liquefied gas flows out through the liquefied gas nozzle, the gas outlet cavity and the natural gas nozzle; when the conversion valve is opened, the natural gas enters the gas outlet cavity through the core body, the gas guide hole, the conversion valve and the gas guide cavity, and the natural gas enters the gas outlet cavity through the core body and the liquefied gas nozzle, and the natural gas is supplied to the gas grill through the natural gas nozzle.

[0008] The dual-fuel oven valve without nozzle replacement is special in that: the conversion valve comprises a valve stem adjustment channel arranged on the air guide cavity, a valve core seat arranged on the air guide cavity and an adjustment valve stem, and the vent hole on the valve core seat connects the air guide cavity and the valve core cavity;

[0009] The regulating valve stem comprises a regulating head, a stem and a valve core portion provided with an end portion of the stem, and the stem is provided with an external threaded portion;

[0010] The external threaded part of the regulating valve stem is threadedly engaged with the internal thread of the valve stem regulating channel and airtightly sealed, the valve core part cooperates with the vent hole on the valve core seat, and the axis of the valve core seat coincides with the axis of the valve stem regulating channel.

[0011] The dual-fuel oven valve without nozzle replacement is special in that it also includes a head cavity and a sealing ring connected to the valve stem adjustment channel;

[0012] The regulating head of the regulating valve stem is cylindrical and is provided with a sealing ring groove;

[0013] The sealing ring is embedded in the sealing ring groove to adjust the air sealing between the head and the head cavity.

[0014] The dual-fuel oven valve without nozzle replacement is special in that: the air inlet hole is divided into a large air inlet hole and a small air inlet hole, and the central angle of the axis of the large air inlet hole and the small air inlet hole is 90 degrees;

[0015] The air guide holes are divided into large air holes and small air holes, and the central angle of the axes of the large air holes and the small air holes is 90 degrees;

[0016] The axes of the small air inlet hole and the large air guide hole are on the same plane, and the large air inlet hole and the small air guide hole are located on both sides of the plane where the axes of the small air inlet hole and the large air guide hole are located.

[0017] The dual-fuel oven valve without nozzle replacement is special in that: a countersunk hole is provided at one end of the valve stem channel in the valve cover, an annular groove surrounding the countersunk hole is provided on the top plate of the valve cover, and two stop protrusions at both ends of a diameter line are provided on the bottom plate of the annular groove; two axial protrusions are provided on the inner wall on a diameter line;

[0018] The pressing plate is provided with two sliding protrusions on a diameter line.

[0019] The suspended end of the driving cylinder of the valve core is provided with a waist-shaped portion;

[0020] It also includes a circular support plate, the center of which is provided with a central waist-shaped hole, and a stop plate is provided on the circular support plate;

[0021] The baffle plate is rotatably matched with the countersunk hole, and the sliding protrusion rotates in the annular groove between the two stop protrusions. The waist-shaped portion of the driving cylinder passes through the central waist-shaped hole of the circular support plate, and the driving cylinder and the waist-shaped portion are adjacent to the circular support plate. One end of the pressure spring is matched with the pressure plate and the other end is matched with the circular support plate; the stop plate is matched with the space between the two axial protrusions.

[0022] The invention discloses a dual-fuel oven valve without nozzle replacement, an air guide cavity, an air outlet cavity and a conversion valve are arranged, a natural gas nozzle and a liquefied gas nozzle are connected in series, and when conversion is required, the conversion valve can be operated with a screwdriver, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the present invention.

[0024] Figure 2 yes Figure 1 A-A view of.

[0025] Figure 3 yes Figure 1 B-B view.

[0026] Figure 4 yes Figure 1 C-C view of the .

[0027] Figure 5 yes Figure 1 D-D view.

[0028] Figure 6 It is a three-dimensional cross-sectional view of the present invention.

[0029] Figure 7 It is a perspective view of the present invention.

[0030] Figure 8 It is a partial three-dimensional cross-sectional view of the valve cover of the present invention.

[0031] Fig. 9 It is one of the three-dimensional exploded views of the present invention.

[0032] Fig.10 It is the second of the three-dimensional exploded diagrams of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1, Figure 2 As shown, a dual-fuel oven valve without replacing the nozzle comprises a valve body 1, a valve core 2, a valve stem 3, a pressure plate 4, a pressure spring 5 and a valve cover 6, the valve body 1 comprises a valve core cavity 11 and an air inlet interface 12 communicating with the valve core cavity, a nozzle is provided at the air outlet end of the valve body 1, and a valve stem channel 61 is provided on the valve cover 6; the valve stem 3 comprises a valve stem portion 31, a baffle 32 and a waist-shaped driving plate portion 33; a waist-shaped hole 41 is provided on the pressure plate 4; the valve core 2 comprises a driving cylinder portion 21 with a radial plug-in groove 211 and a core portion 22 with an opening at one hollow end, the core portion 22 is provided with an air inlet hole, and the end opening is an air outlet, the valve stem portion 31 passes through the valve stem channel 61 and extends to the valve cover 6, the driving plate portion 33 passes through the waist-shaped hole 41 and the pressure spring 5 on the pressure plate 4, and the driving plate portion 33 cooperates with the radial plug-in groove on the driving cylinder portion 21.

[0035] The valve body 1 also includes an air guide cavity 13, a conversion valve 7 connecting the valve core cavity 11 and the air guide cavity 13, and an air outlet cavity 14, wherein the air outlet cavity 14 is connected to the suspended end of the valve core cavity 11 and is in a straight line; one end of the air guide cavity 13 is connected to the end adjacent to the valve core cavity 11 and the valve cover 6, and the other end is connected to the air outlet cavity 14;

[0036] The nozzles include a natural gas nozzle 81 and a liquefied gas nozzle 82.

[0037] An air guide hole is provided at one end of the core part 22 adjacent to the driving cylinder part 21.

[0038] The liquefied gas nozzle 82 is arranged at the suspended end of the valve core cavity 11, and the natural gas nozzle 81 is arranged at the gas outlet end of the gas outlet cavity 14, and the axes of the liquefied gas nozzle 82 and the natural gas nozzle 81 coincide; the air guide hole corresponds to the conversion valve 7; when the conversion valve 7 is in a closed state, the liquefied gas flows out through the core body 22, the valve core cavity 11, the liquefied gas nozzle 82, the gas outlet cavity 14 and the natural gas nozzle 81 to supply the gas oven; when the conversion valve 7 is opened, the natural gas enters the gas outlet cavity 14 through the core body 22, the air guide holes on the core body 22, the conversion valve 7, and the gas guide cavity 13, and the natural gas enters the gas outlet cavity 14 through the core body 22 and the liquefied gas nozzle 82, and the natural gas is supplied to the gas oven through the natural gas nozzle 81.

[0039] The conversion valve 7 includes a valve stem adjustment channel 71 provided on the air guide cavity 13, a valve core seat 72 provided on the air guide cavity 13 and an adjustment valve stem, and the vent hole on the valve core seat 72 connects the air guide cavity 13 and the valve core cavity 11;

[0040] The regulating valve stem includes a regulating head 731, a stem 732 and a valve core 733 provided with an end of the stem, and the stem 732 is provided with an external threaded portion;

[0041] The external threaded portion on the stem portion 732 of the regulating valve stem is threadedly engaged with the internal thread of the valve stem regulating channel 71 and is airtightly sealed, the valve core portion 733 is matched with the vent hole on the valve core seat 72, and the axis of the valve core seat 72 coincides with the axis of the valve stem regulating channel 71. The axis of the valve stem regulating channel 71 and the valve core seat 72 are perpendicular to the length direction of the air guide cavity 13;

[0042] It also includes a head cavity 74 and a sealing ring 75 that are connected to the valve stem adjustment channel;

[0043] The regulating head 731 of the regulating valve stem is cylindrical, and a sealing ring groove is provided on the regulating head 731;

[0044] The sealing ring 75 is embedded in the sealing ring groove to adjust the airtightness between the head 731 and the head cavity 74 .

[0045] like Figure 3 As shown, the air inlet hole is divided into a large air inlet hole 231 and a small air inlet hole 232, and the central angle of the axis of the large air inlet hole 231 and the small air inlet hole 232 is 90 degrees; the radial outer end of the small air inlet hole 232 is provided with an air guide countersunk hole;

[0046] like Figure 4 As shown, the air guide hole is divided into a large air vent hole 241 and a small air vent hole 242, and the central angle of the axis of the large air vent hole 241 and the small air vent hole 242 is 90 degrees; the radial outer end of the small air vent hole 242 is provided with an air guide countersunk hole;

[0047] like Fig. 9 , Fig.10 As shown, the axes of the small air inlet hole 232 and the large air guide hole 241 are on the same plane, and the large air inlet hole 231 and the small air guide hole 242 are located on both sides of the plane where the axes of the small air inlet hole 232 and the large air guide hole 241 are located.

[0048] The valve stem passage 61 is provided with a countersunk hole 611 at one end in the valve cover 6, and an annular groove 62 surrounding the countersunk hole 611 is provided on the top plate of the valve cover 6, and two stop protrusions 63 at both ends of a diameter line are provided on the bottom plate of the annular groove 62; and two axial protrusions 64 are provided on the inner wall on a diameter line;

[0049] The pressure plate 4 is provided with two sliding protrusions 42 on a diameter line.

[0050] The suspended end of the driving cylinder 21 of the valve core 2 is provided with a waist-shaped portion 212;

[0051] It also includes a circular support plate 8, a central waist-shaped hole 812 is provided at the center of the circular support plate 8, and a stop plate 82 is provided on the circular support plate;

[0052] The baffle plate 32 is rotatably matched with the counterbore 611, and the sliding protrusion 42 is rotated in the annular groove 62 between the two stop protrusions 63. The waist-shaped portion 212 of the driving cylinder 21 passes through the central waist-shaped hole 81 of the circular support plate 8. The driving cylinder 21 supports the circular support plate 8 adjacent to the waist-shaped portion 212. One end of the pressure spring 8 is matched with the pressure plate 4, and the other end is matched with the circular support plate 8; the stop plate 82 is matched with the space between the two axial protrusions 64;

[0053] like Figure 6 , Fig. 9 As shown, the end surface of the sliding protrusion 42 is provided with a sliding surface that spirals upward from the counterclockwise end to the clockwise end; or a sliding surface that spirals upward in the counterclockwise direction;

[0054] The stop protrusion 63 is provided with a guide surface that spirally rises from the clockwise end to the counterclockwise end; or in other words, the axial end surface of the stop protrusion 63 is provided on the guide surface that spirally rises in the clockwise direction;

[0055] With such a structure, the valve stem 3 cannot be rotated without being pressed, thus preventing leakage due to misoperation.

[0056] Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, Figure 1 In the direction of the air arrow shown, press the valve stem 3, the valve stem 3 moves to the right, the valve stem 3, the pressure plate 4, the pressure spring 5, the support plate 8 and the valve core 2 rotate together, and then rotate the valve stem 3 counterclockwise, the sliding surface and the guide surface slide together, and the valve core 2 rotates; Figure 3 In the state shown, rotate counterclockwise 90 degrees, the axis of the large air inlet hole 231 coincides with the axis of the air inlet interface 12, the air inlet interface 12, the valve core cavity 11, and the core body 22 are connected, and the gas enters the core body 22; Figure 4 As shown, after rotating 90 degrees, the large air guide hole 241 is opposite to the air vent on the valve core seat 72 of the conversion valve 7; continue to rotate counterclockwise 90 degrees, the small air inlet hole 232 coincides with the axis of the air inlet interface 12, and the small air guide hole 242 is opposite to the air vent on the valve core seat 72 of the conversion valve 7.

[0057] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. A dual-fuel oven valve without nozzle replacement, comprising a valve body, a valve core, a valve stem, a pressure plate pressure spring and a valve cover, the valve body comprising a valve core cavity and an air inlet interface communicating with the valve core cavity, a nozzle being arranged at the air outlet end of the valve body, and a valve stem channel being arranged on the valve cover; the valve stem comprising a valve stem portion, a baffle and a waist-shaped driving plate portion; a waist-shaped hole being arranged on the pressure plate; the valve core comprising a driving cylinder portion with a radial plug-in groove and a core portion with an opening at one hollow end, the core portion being provided with an air inlet hole and the end opening being an air outlet, the valve stem portion extending through the valve stem channel to the valve cover, the driving plate portion passing through the waist-shaped hole and the pressure spring on the pressing plate, the driving plate portion cooperating with the radial plug-in groove on the driving cylinder portion; the characteristics are: The valve body also includes an air guide cavity, a conversion valve connecting the valve core cavity and the air guide cavity, and an air outlet cavity, wherein the air outlet cavity is connected to the suspended end of the valve core cavity and is in a straight line; one end of the air guide cavity is connected to the end adjacent to the valve core cavity and the valve cover, and the other end is connected to the air outlet cavity; The nozzles include natural gas nozzles and liquefied gas nozzles. An air guide hole is provided at one end of the core body adjacent to the driving cylinder. The liquefied gas nozzle is arranged at the suspended end of the valve core cavity, and the natural gas nozzle is arranged at the gas outlet end of the gas outlet cavity, and the axes of the liquefied gas nozzle and the natural gas nozzle coincide with each other; the air guide hole corresponds to the conversion valve; when the conversion valve is in a closed state, the liquefied gas flows out through the liquefied gas nozzle, the gas outlet cavity and the natural gas nozzle; when the conversion valve is opened, the natural gas enters the gas outlet cavity through the core body, the air guide hole, the conversion valve and the gas guide cavity, and the natural gas enters the gas outlet cavity through the core body and the liquefied gas nozzle, and the natural gas is supplied to the gas oven through the natural gas nozzle; The plane where the valve core cavity, the air outlet cavity and the air guide cavity are located is perpendicular to the plane where the air inlet interface is located; The air inlet hole is divided into a large air inlet hole and a small air inlet hole, and the central angle of the axis of the large air inlet hole and the small air inlet hole is 90 degrees; The air guide holes are divided into large air holes and small air holes, and the central angle of the axes of the large air holes and the small air holes is 90 degrees; The axes of the small air inlet hole and the large air guide hole are on the same plane, and the large air inlet hole and the small air guide hole are located on both sides of the plane where the axes of the small air inlet hole and the large air guide hole are located.

2. A dual-fuel oven valve without nozzle replacement according to claim 1, characterized in that: The conversion valve comprises a valve stem regulating channel arranged on the air guide cavity, a valve core seat arranged on the air guide cavity and a regulating valve stem, and the vent hole on the valve core seat connects the air guide cavity and the valve core cavity; The regulating valve stem comprises a regulating head, a stem and a valve core portion provided with an end portion of the stem, and the stem is provided with an external threaded portion; The external threaded part of the regulating valve stem is threadedly engaged with the internal thread of the valve stem regulating channel and airtightly sealed, the valve core part cooperates with the vent hole on the valve core seat, and the axis of the valve core seat coincides with the axis of the valve stem regulating channel.

3. A dual-fuel oven valve without nozzle replacement according to claim 2, characterized in that: It also includes a head cavity and a sealing ring connected to the valve stem adjustment channel; The regulating head of the regulating valve stem is cylindrical and is provided with a sealing ring groove; The sealing ring is embedded in the sealing ring groove to adjust the airtightness between the head and the head cavity.

4. A dual-fuel oven valve without nozzle replacement according to claim 1, 2 or 3, characterized in that: The valve stem channel is provided with a countersunk hole at one end in the valve cover, an annular groove surrounding the countersunk hole is provided on the top plate of the valve cover, and two stop protrusions at both ends of a diameter line are provided on the bottom plate of the annular groove; two axial protrusions on a diameter line are provided on the inner wall; The pressing plate is provided with two sliding protrusions on a diameter line. The suspended end of the driving cylinder of the valve core is provided with a waist-shaped portion; It also includes a circular support plate, the center of which is provided with a central waist-shaped hole, and a stop plate is provided on the circular support plate; The baffle plate is rotatably matched with the countersunk hole, and the sliding protrusion rotates in the annular groove between the two stop protrusions. The waist-shaped portion of the driving cylinder passes through the central waist-shaped hole of the circular support plate, and the driving cylinder and the waist-shaped portion are adjacent to the circular support plate. One end of the pressure spring is matched with the pressure plate and the other end is matched with the circular support plate; the stop plate is matched with the space between the two axial protrusions.

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