Gas Valve with Two Nozzles

Abstract

A gas valve with two nozzles includes a valve body having an inlet, a primary outlet and a secondary outlet; a rotatable valve core is disposed inside the valve body; a valve rod inserted into the valve body; a first nozzle connected to a first outlet end of the primary outlet; and a second nozzle connected to a second outlet end of the secondary outlet; wherein, a connection chamber with a top opening for receiving the valve rod is mounted on the upper portion of the valve core; a ventilation chamber in communication with the primary outlet is defined in the lower portion of the valve core, the ventilation chamber having a side wall; a first high fire hole and a low fire hole both for communication between the inlet and the primary outlet are defined on the side wall of the ventilation chamber; and a second high fire hole for communication between the inlet and the primary outlet and a supplementary fire hole for communication between the ventilation chamber and the secondary outlet are defined on the side wall of the ventilation chamber of the valve core. In this gas valve, two nozzles can be kept in a gas injection state simultaneously only by rotating a valve rod to a certain position, without keeping a hand in a pressed-down operation position all the time.

Claims

1. A gas valve with two nozzles, comprising: a valve body having an inlet, a primary outlet and a secondary outlet; a rotatable valve core, disposed inside the valve body, having an upper portion and a lower portion; a valve rod inserted into the valve body; a first nozzle connected to a first outlet end of the primary outlet; and a second nozzle connected to a second outlet end of the secondary outlet; wherein, a connection chamber with a top opening for receiving the valve rod is mounted on the upper portion of the valve core; a ventilation chamber in communication with the primary outlet is defined in the lower portion of the valve core, the ventilation chamber having a side wall; a first high fire hole and a low fire hole both for communication between the inlet and the primary outlet are defined on the side wall of the ventilation chamber; and a second high fire hole for communication between the inlet and the primary outlet and a supplementary fire hole for communication between the ventilation chamber and the secondary outlet are defined on the side wall of the ventilation chamber of the valve core.

2. The gas valve of claim 1, wherein the inlet, the first high fire hole, the second high fire hole, the low fire hole, the supplementary fire hole and the secondary outlet meet the following conditions: when the valve core is rotated from an initial position to a first angle, the inlet is in communication with the first high fire hole, the inlet is not in communication with the second high fire hole and the low fire hole, and the supplementary fire hole is not in communication with the secondary outlet; when the valve core is rotated from the first angle to a second angle, the inlet is communicated with the low fire hole, the inlet is not in communication with the first high fire hole and the second high fire hole, and the supplementary fire hole is not in communication with the secondary outlet; when the valve core is rotated from the second angle to a third angle, the inlet is in communication with the second high fire hole, the inlet is not in communication with the first high fire hole and the low fire hole, and the supplementary fire hole is communicated with the secondary outlet.

3. The gas valve of claim 1, wherein an axis of the primary outlet is parallel to an axis of the secondary outlet, a connecting hole for communication the secondary outlet with the second high fire hole is formed at a side wall of the top of the secondary outlet.

4. The gas valve of claim 1, wherein the ventilation chamber and the connection chamber are connected to each other through a threaded connection hole which is axially defined inside the valve core; an auxiliary low fire hole communicating with the threaded connection hole is formed on a side wall of the valve core; the auxiliary low fire hole is located above the low fire hole; and, an adjustment screw is movably disposed within the threaded connection hole, and the adjustment screw moves inside the threaded connection hole so as to adjust communication between the auxiliary low fire hole and the ventilation chamber.

5. The gas valve of claim 4, wherein the threaded connection hole has a threaded hole portion at the upper thereof and an unthreaded hole portion at the lower thereof; the auxiliary low fire hole is communicated with the threaded hole portion; the adjustment screw has a head, an annular groove portion, a threaded portion and an unthreaded rod portion successively from top to bottom; an inner peripheral wall of the connection chamber is sheathed on the annular groove portion to form an airtight seal ring; the threaded portion is in threaded connection to the threaded hole portion; and the unthreaded rod portion can realize blockage with the unthreaded hole portion.

6. The gas valve of claim 5, wherein the unthreaded rod portion has a conical periphery surface, and the unthreaded hole portion has a conical inner wall matching with the unthreaded rod portion.

7. The gas valve of claim 4, wherein both the low fire hole and the auxiliary low fire hole have a step at the side wall thereof.

8. The gas valve of claim 4, wherein a perforation for allowing an adjustment hand tool to pass through is arranged on the valve rod.

9. The gas valve of anyone of claim 1, wherein a valve housing and a valve cover connecting with each other forms the valve body; all the inlet passage, the primary outlet passage and the secondary outlet passage are arranged on the valve housing; and the valve rod is inserted through the valve cover.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a perspective view of a gas valve with two nozzles according to an embodiment of the present invention.

[0026] FIG. 2 is a sectional view of the gas valve according to the embodiment of the present invention (at an initial position defined as 0);

[0027] FIG. 3 is a sectional view of the gas valve according to the embodiment of the present invention (at 90);

[0028] FIG. 4 is a sectional view of the gas valve according to the embodiment of the present invention (at 165);

[0029] FIG. 5 is a sectional view of the gas valve according to the embodiment of the present invention (at 230);

[0030] FIG. 6 is a sectional view of the gas valve according to the embodiment of the present invention (at 230);

[0031] FIG. 7 is a first perspective view of the valve core according to the embodiment of the present invention;

[0032] FIG. 8 is a second perspective view of the valve core according to the embodiment of the present invention;

[0033] FIG. 9 is a sectional view of the valve core according to the embodiment of the present invention (in a state where an adjustment screw blocks an auxiliary low flame hole);

[0034] FIG. 10 is a sectional view of the valve core according to the embodiment of the present invention (in a state where the adjustment screw opens the auxiliary low flame hole); and

[0035] FIG. 11 is an exploded view of the valve core according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0036] To enable a further understanding of the innovative and technological content of the invention herein, refer to the detailed description of the invention and the accompanying drawings below:

[0037] FIGS. 1-11 show a prefer embodiment of the present invention.

[0038] The gas valve with two nozzles comprises a valve body 1, a rotatable valve core 3, a valve rod 4, a first nozzle 6, and a second nozzle 7.

[0039] The valve body 1 has an inlet 11, a primary outlet 12 and a secondary outlet 13. The rotatable valve core 3 is disposed inside the valve body 1, having an upper portion and a lower portion. The valve rod 4 is inserted into the valve body 1. The first nozzle 6 connected to a first outlet end of the primary outlet 12, and the valve rod 4 has a perforation 41 for allowing an adjustment hand tool to pass through. The second nozzle 7 is connected to a second outlet end of the secondary outlet 13.

[0040] A connection chamber 32 with a top opening for receiving the valve rod 4 is mounted on the upper portion of the valve core 3.

[0041] A ventilation chamber 31 in communication with the primary outlet 12 is defined in the lower portion of the valve core 3, the ventilation chamber 31 has a side wall. A first high fire hole 2a and a low fire hole 5 both for communication between the inlet 11 and the primary outlet 12 are defined on the side wall of the ventilation chamber 31. And a second high fire hole 2b for communication between the inlet 11 and the primary outlet 12 and a supplementary fire hole 8 for communication between the ventilation chamber 31 and the secondary outlet 13 are defined on the side wall of the ventilation chamber 31 of the valve core 3.

[0042] A valve housing 14 and a valve cover 15 is connected with each other forms on the valve body 1. All the inlet 11, the primary outlet 12 and the secondary outlet 13 are arranged on the valve housing 14; and the valve rod 4 is inserted through the valve cover 15.

[0043] The inlet 11, the first high fire hole 2a, the second high fire hole 2b, the low fire hole 5, the supplementary fire hole 8 and the secondary outlet 13 meet the following conditions.

[0044] As shown in FIG. 3, when the valve core is rotated from an initial position which defined as 0 to a first angle which may be 90, the inlet 11 is in communication with the first high fire hole 2a, the inlet 11 is not in communication with the second high fire hole 2b and the low fire hole 5, and the supplementary fire hole 8 is not in communication with the secondary outlet 13.

[0045] As shown in FIG. 4, when the valve core is rotated from the first angle to a second angle which may be 165, the inlet 11 is communicated with the low fire hole 5, the inlet 11 is not in communication with the first high fire hole 2a and the second high fire hole 2b, and the supplementary fire hole 8 is not in communication with the secondary outlet 13.

[0046] As shown in FIGS. 5 and 6, when the valve core is rotated from the second angle to a third angle which may be 230, the inlet 11 is in communication with the second high fire hole 2b, the inlet 11 is not in communication with the first high fire hole 2a and the low fire hole 5, and the supplementary fire hole 8 is communicated with the secondary outlet 13.

[0047] An axis of the primary outlet 12 is parallel to an axis of the secondary outlet 13, a connecting hole 131 for communication the secondary outlet with the second high fire hole 2b is formed on a side wall of the top of the secondary outlet 13.

[0048] As shown FIGS. 7-11, the ventilation chamber 31 and the connection chamber 32 are connected to each other through a threaded connection hole 33 which is axially defined disposed the valve core 3; an auxiliary low fire hole 51 communicating with the threaded connection hole 33 is formed on a side wall of the valve core 3; the auxiliary low fire hole 51 is located above the low fire hole 5; an adjustment screw 9 is movably disposed within the threaded connection hole 33, and the adjustment screw 9 moves inside the threaded connection hole 33 so as to adjust communication between the auxiliary low flame hole 51 and the ventilation chamber 31.

[0049] The threaded connection hole 33 has a threaded hole portion 331 at the upper thereof and an unthreaded hole portion 332 at the lower thereof; the auxiliary low fire hole 51 is communicated with the threaded hole portion 331; the adjustment screw 9 has a head 91, an annular groove portion 92, a threaded portion 93 and an unthreaded rod portion 94 successively from top to bottom; an inner peripheral wall of the connection chamber 32 is sheathed on the annular groove portion 92 to form an airtight seal ring 10; the threaded portion 93 is in threaded connection to the threaded hole portion 331, and the unthreaded rod portion 94 can realize blockage with the unthreaded hole portion 332. The unthreaded rod portion 94 has a conical periphery surface, and the unthreaded hole portion 332 has a conical inner wall matching with the unthreaded rod portion 94. Both the low fire hole 5 and the auxiliary low fire hole 51 have a step at the side wall thereof.

[0050] The operation principle and process of the present invention are as follows.

[0051] As shown in FIG. 3, when the valve core is rotated from the initial position (0) to a first angle (90), the inlet 11 is in communication with the first high fire hole 2a, the inlet 11 is not in communication with the second high fire hole 2b and the low fire hole 5, and the supplementary fire hole 8 is not in communication with the secondary outlet 13. In this case, it is in a high flame state.

[0052] As shown in FIG. 4, when the valve core is rotated from the first angle (90) to a second angle (165), the inlet 11 is communicated with the low fire hole 5, the inlet 11 is not in communication with the first high fire hole 2a and the second high fire hole 2b, and the supplementary fire hole 8 is not in communication with the secondary outlet 13. In this case, it is in a low flame state. When a gas having high heat is needed, it is only required to screw the adjustment screw 9, so that the unthreaded rod portion 94 of the adjustment screw 9 blocks an outlet end of the unthreaded hole portion 332 of the threaded connection hole, and the auxiliary low fire hole 6 is not in communication with the ventilation chamber 2. As a result, only the low fire hole 5 works, and the gas flow becomes lower. However, when a gas having high heat is needed, the adjustment screw 9 is unscrewed, so that the unthreaded rod portion 94 of the adjustment screw 9 is disconnected from the unthreaded hole portion 332 of the threaded connection hole, and the auxiliary low fire hole 51 is communicated with the ventilation chamber 31 through the unthreaded hole portion 332. As a result, both the low fire hole 5 and the auxiliary low fire hole 51 are communicated with the ventilation chamber 31, and the gas flow becomes higher.

[0053] As shown in FIGS. 5 and 6, when the valve core is rotated from the second angle (165) to a third angle (230), the inlet 11 is in communication with the second high fire hole 2b, the inlet 11 is not in communication with the first high fire hole 2a and the low fire hole 5, and the supplementary fire hole 8 is communicated with the secondary outlet 13. In this way, gas is communicated with the primary outlet 12 through the inlet 11, the second high fire hole 2b and the ventilation chamber 31. Meanwhile, the gas is communicated with the secondary outlet through the ventilation chamber 31 and the supplementary fire hole, so that gas is injected from both the primary outlet and the secondary outlet. During this process, the valve rod does not need to be operated manually, and the valve core is automatically kept at this position. When the two-nozzle mode is not required, it is only required to rotate the valve rod reversely, and the operation is more humanized.

[0054] When the valve core is rotated to a certain angle, it is ensured that the inlet is communicated with the second high fire hole, the inlet is not in communication with the first high fire hole and the low fire hole, and the supplementary fire hole is communicated with the secondary outlet.