CN205101601U - Two air supply BBQ ovens of two air supply gas kind selection valves in area - Google Patents

Abstract

The utility model discloses a double gas source BBQ oven with a double gas source gas type selection valve, comprising: a gas pipe, on which at least one gas supply port is arranged; at least one double gas source control valve, the double gas source control valve, The air inlet of the air source control valve is connected to one of the air supply ports; at least one burner is connected to the air outlet of the dual air source control valve; a dual air source gas selection valve is located at the One end of the gas pipe is used to select the gas supply type for each of the dual gas source control valves. The dual gas source BBQ oven with dual gas source gas selection valve of the utility model adds a dual gas source gas selection valve, which selects the gas intake according to the intake pressure before the gas enters the dual gas source control valve. It can maintain the stability of the air pressure of the intake air, thus avoiding the problem of sudden increase of the flame caused by the decrease of the air pressure in the cylinder after a long period of combustion.

Description

A double gas source BBQ oven with a dual gas source gas type selection valve

technical field

The utility model relates to a double gas source BBQ oven with a double gas source gas type selection valve.

Background technique

Since the calorific value of natural gas and liquefied gas are different, the corresponding nozzles are different under the same power. See patent 201210191671.1 and patent 201210223977.0. The working principle of the dual gas source control valve is to select which nozzle to use for gas supply through the different pressures of liquefied gas and natural gas. However, with the use of liquefied gas in the cylinder, the pressure of the cylinder will gradually decrease. When it reaches a certain value, that is, when the pressure is the same as that of natural gas, the dual gas source control valve will choose a large nozzle to supply gas. Due to the high calorific value of liquefied petroleum gas, the flame suddenly becomes very large at this time, which poses a safety hazard.

Utility model content

Due to the above-mentioned problems in the prior art, the utility model proposes a double-gas source BBQ oven with a double-gas source gas type selection valve, which can effectively solve the problems in the prior art.

The utility model solves the above problems through the following technical solutions:

A double gas source BBQ oven with a dual gas source gas selection valve, comprising: a gas pipe, on which at least one gas supply port is arranged; at least one double gas source control valve, the dual gas source control valve The air inlet is connected to one of the gas supply ports; at least one burner is connected to the gas outlet of the dual gas source control valve; a dual gas source gas selection valve is located at the gas pipe At one end, the air supply type is selected for each of the dual air source control valves.

The dual gas source gas type selection valve includes a valve body, a push rod arranged in the valve body, a liquefied gas end valve cover arranged at the upper port of the valve body, and a liquefied gas end valve cover arranged at the lower port of the valve body as the natural gas The natural gas end valve cover of the air inlet, wherein: the valve body is sequentially provided with a first chamber, a second chamber communicating with the first chamber, and a chamber separated from the second chamber from top to bottom. The third chamber; one side of the upper port of the valve body is provided with a liquefied gas inlet, which communicates with the first chamber, and one side of the second chamber is provided with a liquefied gas inlet. A gas outlet, one side of the third chamber is provided with a natural gas outlet; the junction of the first chamber and the second chamber is provided with a guide with the same diameter as the outer diameter of the push rod; The top of the guide part is provided with a pressure regulating plug, the pressure regulating plug is provided with a film, and the pressure regulating plug is provided with a first sealing ring for sealing the top of the guide part, when the liquefied gas is connected, the The liquefied gas enters the first chamber from the liquefied gas inlet and applies pressure on the film, and the film drives the pressure regulating plug to move upwards and then drives the sealing ring to separate from the top of the guide part, communicating with the The first chamber and the second chamber; the bottom of the push rod is connected to the valve cover of the natural gas end, and the third chamber and the valve cover of the natural gas end are sealed by a second sealing ring, so The push rod passes through the third chamber and the second chamber. When natural gas is connected to the natural gas end valve cover, the push rod moves upward under the pressure of natural gas to communicate with the natural gas end valve cover and the natural gas end valve cover. In the third chamber, the top of the push rod presses against the bottom of the guide part to isolate the first chamber and the second chamber; the liquefied gas end valve cover is provided with a hollow raised part with an internal thread A pressure regulating screw is screwed on the top of the raised part, a pressure regulating spring is arranged under the pressure regulating screw, and the pressure regulating spring is located on the top of the pressure regulating bolt.

A partition plate is provided between the second chamber and the third chamber, and a sealing ring is provided at the joint between the partition plate and the push rod in the third chamber.

A spring is sheathed on the parts of the push rod located in the second chamber and the third chamber.

The liquefied gas outlet is connected to the gas pipe through a liquefied gas outlet pipe; the natural gas outlet is connected to the gas pipe through a natural gas outlet pipe, and a pressure stabilizing valve is arranged on the natural gas outlet pipe.

The burner is strip-shaped or disc-shaped.

A Venturi mixing tube is provided at the joint between the disc burner and the gas outlet of the dual gas source control valve.

The dual gas source BBQ oven with dual gas source gas selection valve of the utility model adds a dual gas source gas selection valve, which selects the gas intake according to the intake pressure before the gas enters the dual gas source control valve. This method can maintain the stability of the air pressure of the intake air, thereby avoiding the problem of a sudden increase in the flame caused by the decrease of the air pressure in the cylinder after a long period of combustion.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is a structural cross-sectional view of the dual gas source gas type selection valve in the non-working state of the utility model;

Fig. 3 is a structural cross-sectional view of the dual gas source and gas type selection valve of the present invention when it is connected to natural gas;

Fig. 4 is a structural schematic diagram of the dual gas source gas selection valve of the present invention in the state of being connected to liquefied gas.

detailed description

Below in conjunction with specific embodiment, describe the utility model in detail.

Referring to Fig. 1, Fig. 1 is a schematic structural view of an embodiment of the present invention. The dual gas source BBQ oven with dual gas source gas selection valve in this embodiment includes a gas pipe 1, a dual gas source gas selection valve 2, at least one dual gas source control valve 3 and at least one burner 4 . Wherein: in this embodiment, the gas pipe 1 is provided with four gas supply ports at intervals, and each gas supply port is connected with an air inlet of a dual gas source control valve 3, and the dual gas source control valve 3 shown is A burner 4 is connected to the gas outlet. One end of the gas pipe 1 is provided with a dual gas source gas selection valve 2, the dual gas source wherein the selection valve 2 selects the gas supply gas type for each of the dual gas source control valves 3, to prevent gas in the cylinder due to long-term use Flame instability due to pressure changes.

Referring to Figures 2 to 4, Figure 2 is a cross-sectional view of the structure of the dual-source gas selection valve of the present invention in a non-working state; Structural cross-sectional view of the state; Figure 4 is a schematic structural view of the utility model dual gas source gas selection valve in the state of access to liquefied gas.

The dual gas source gas type selection valve 2 includes a valve body 21, a push rod 22 arranged in the valve body 21, a liquefied gas end valve cover 23 arranged at the upper port of the valve body 21, and a valve cover 23 arranged in the valve body. The lower port serves as the natural gas end valve cover 24 of the natural gas inlet. Wherein: the valve body 21 is sequentially provided with a first chamber 211, a second chamber 212 communicating with the first chamber 211 and a third chamber separated from the second chamber 212 from top to bottom 213. A liquefied gas inlet 214 is provided on the upper port side of the valve body 21 , and the liquefied gas inlet 214 communicates with the first chamber 211 . A liquefied gas outlet 215 is opened on one side of the second chamber 212 , and a natural gas outlet 216 is opened on one side of the third chamber 213 . The junction of the first chamber 211 and the second chamber 212 is provided with a guide portion 5 having the same diameter as the outer diameter of the push rod. The top of the guide part 5 is provided with a pressure regulating plug 6, and the pressure regulating plug 6 is provided with a film 7, and the pressure regulating plug is provided with a first sealing ring 8 for sealing the top of the guide part. Referring to FIG. 2 , the bottom of the push rod 22 is connected to the natural gas end valve cover 24 , and a second sealing ring 9 is used to seal the third chamber 213 and the natural gas end valve cover 24 . The push rod 22 passes through the third chamber 213 and the second chamber 212 .

Referring to FIG. 4 , when the liquefied gas is introduced into the liquefied gas inlet 214 , the liquefied gas enters the first chamber 211 and exerts pressure on the membrane 7 . The film 7 drives the pressure regulating plug 6 to move upwards and then drives the first sealing ring 8 to separate from the top end of the guide part 5 , so that the first chamber communicates with the second chamber. The liquefied gas enters the second chamber 212 from the first chamber 211 and exits from the liquefied gas outlet 215 . At this time, the push rod is in the original position, and the second sealing ring closes the natural gas end valve cover 24 and the third chamber 213 .

Referring to Fig. 3, when the natural gas end valve cover 24 is connected to natural gas, the push rod 22 moves upward under the pressure of natural gas, so that the natural gas end valve cover 24 communicates with the third chamber 213, The natural gas enters the third chamber 213 from the valve cover 24 of the natural gas end and exits through the natural gas outlet 216 . At the same time, the top of the push rod 22 presses against the bottom of the guide part 5 to isolate the first chamber from the second chamber, that is, to close the communication between the first chamber and the second chamber, so that the liquefaction The gas outlet 215 cannot discharge gas.

Referring to Figure 2, the liquefied gas end valve cover 23 is provided with a hollow raised portion 231 with an internal thread, a pressure regulating screw 232 is screwed on the top of the raised portion, and a pressure regulating spring 233 is located on the top of the raised portion. Below the pressure regulating screw, and the pressure regulating spring 233 is located on the top of the pressure regulating bolt 6 . When the pressure of the liquefied gas continues to decrease to the pressure set by the pressure regulating spring 233, the pressure regulating spring 233 drives the pressure regulating plug 6 to move downward, thereby driving the first sealing ring 8 to also move downward. At this time, the liquefied gas The channel is closed, and the first chamber and the second chamber are closed, eliminating potential safety hazards.

In order to further increase the airtightness, a partition plate 10 is provided between the second chamber and the third chamber, and a sealing ring is provided at the joint between the partition board and the push rod in the third chamber 101. The parts of the push rod 22 located in the second chamber 212 and the third chamber 213 are sleeved with a spring 11 to facilitate the reset and movement of the push rod.

Referring to Fig. 1, when a dual gas source selection valve is installed, the liquefied gas outlet 215 on the dual gas source selection valve is connected to the gas pipe 1 through a liquefied gas outlet pipe 12; the natural gas outlet 216 It is connected to the gas pipe 1 through a natural gas outlet pipe 13, and a pressure stabilizing valve 14 is arranged on the natural gas outlet pipe.

The burner 4 in the double gas source BBQ oven with dual gas source gas selection valve shown in FIG. 1 can have a strip burner 41 and a disc burner 42 . A Venturi mixing tube 421 is provided at the joint between the disc burner and the gas outlet of the dual gas source control valve.

It should be understood that these embodiments are only used to illustrate the utility model but not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Claims (7)

1. the dual gas supply BBQ baking oven with dual gas supply gas kind selector valve, is characterized in that, comprising:

One fuel tube, this fuel tube is provided with at least one air supply opening;

At least one dual gas supply control valve, the suction port of this dual gas supply control valve is connected on air supply opening described in;

At least one burner, this burner is connected to the air outlet of described dual gas supply control valve;

One dual gas supply gas kind selector valve, it is located at one end of described fuel tube, for each described dual gas supply control valve selects air feed gas kind.

2. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 1, it is characterized in that, described dual gas supply gas kind selector valve comprises a valve body, the push rod be located in described valve body, be located at valve body upper end-hole liquid gas end valve lid and be located at described valve body lower end mouth and as the rock gas end valve lid of rock gas suction port, wherein:

Described valve body be from top to bottom provided with successively the first chamber, with the second chamber of described first chamber and the 3rd chamber separated with described second chamber; The upper end-hole side of described valve body is provided with a liquid gas suction port, this liquid gas suction port and described first chamber, and the side of described second chamber offers a liquid gas air outlet, and the side of described 3rd chamber offers rock gas air outlet; Described first chamber and the jointing place of described second chamber are provided with the identical guide portion of the external diameter of diameter and described push rod; The top of described guide portion is provided with a pressure regulation bolt, described pressure regulation bolt is provided with an epithelium, and this pressure regulation bolt is provided with the first seal ring sealing described guide portion top, when accessing liquid gas, described liquid gas enters the first chamber by liquid gas suction port and applies pressure to described epithelium, described epithelium drives described pressure regulation bolt to move upward and then drives described seal ring to be separated with the top of described guide portion, be communicated with described first chamber and the second chamber;

The bottom of described push rod is connected to described rock gas end valve and covers, and by airtight described 3rd chamber of one second seal ring and described rock gas end valve lid, described push rod is through described 3rd chamber and the second chamber, when accessing rock gas by described rock gas end valve lid, described push rod moves upward and is communicated with rock gas end valve lid and described 3rd chamber under the pressure of rock gas promotes, and the top of described push rod compresses residence and states the bottom of guide portion and isolate the first chamber and the second chamber;

Described liquid gas end valve covers and is provided with a tapped hollow boss portion, and a pressure regulating screw is rotatably connected in described lug boss top, and a pressure adjusting spring is located at below described pressure regulating screw, and pressure adjusting spring described in this is positioned at the top of described pressure regulation bolt.

3. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 2, it is characterized in that, be provided with a partition panel between described second chamber and the 3rd chamber, in described 3rd chamber, partition panel and described push rod connecting part are provided with seal ring.

4. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 2, it is characterized in that, the part that described push rod is positioned at the second chamber and the 3rd chamber is all arranged with a spring.

5. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 2, is characterized in that, described liquid gas air outlet is connected with described fuel tube by a liquid gas steam outlet pipe; Described rock gas air outlet is connected with described fuel tube by a rock gas steam outlet pipe, and described rock gas steam outlet pipe is provided with a pressure maintaining valve.

6. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 1, it is characterized in that, described burner is long strip or disc.

7. the dual gas supply BBQ baking oven of band dual gas supply gas kind selector valve according to claim 6, it is characterized in that, the connecting part, air outlet of described disc burner and described dual gas supply control valve is provided with a venturi mixing tube.