Gas supply mechanism capable of stabilizing soft fire, combustor and cooking range

Abstract

The utility model belongs to the technical field of cooking ranges, and particularly relates to an air supply mechanism capable of stabilizing soft fire, a burner and a cooking range, which comprise a tee joint provided with a first through port, a second through port and a third through port, and are characterized in that the first through port is a fan connecting port, the second through port is a main fire air supply port, and a baffle is plugged on the third through port; the rear end of the air taking pipe is inserted into an inner cavity of the tee joint, and the front end of the air taking pipe is a soft fire air supply port. According to the air supply mechanism, the air taking pipe only takes part of air in the tee joint to be supplied to the soft fire, the influence of airflow disturbance caused by the main fire air supply port in the tee joint on the soft fire is reduced, air supply of the soft fire is more stable, and therefore stable combustion of the soft fire is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of stoves, and particularly relates to a gas supply mechanism, a burner and a stove capable of stabilizing a small flame. Background Art

[0002] In China where Chinese cuisine is dominant, commercial gas stoves for cooking Chinese cuisine are equipped in hotels, canteens and central kitchens. In existing commercial gas stoves, a main fire and a small fire for igniting the main fire are usually provided. The small fire is also called a pilot or a standing pilot, and forms a pilot assembly together with an electronic ignition needle and a flame sensing needle. The mixed gas ejected from the small fire gas supply pipe is ignited by the electronic ignition needle to form a small fire for igniting the main fire. At the same time, the flame sensing needle determines whether to extinguish by sensing the flame of the small fire. If it is determined to be extinguished, the main fire gas is closed, forming an extinguishing protection control system, which not only avoids wasting gas, but also avoids accidents such as gas poisoning and explosion.

[0003] In order to reduce the number of configured fans and reduce costs, usually one fan supplies air to both the main fire and the small fire together, that is, the air outlet pipeline of the fan is branched, one path is for the main fire, and the other path is for the small fire. However, in actual use, the small fire is prone to be large and small, very unstable, especially obvious at the moment of adjusting the main fire or turning on the main fire, and even causes the small fire to accidentally extinguish, affecting the normal use of the main fire. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a gas supply mechanism, a burner and a stove capable of stabilizing a small flame, which can reduce the influence of the main fire on the small fire by changing the gas supply structure of the small fire.

[0005] The technical solution adopted by the utility model to solve its technical problems is: designing a gas supply mechanism capable of stabilizing a small flame, including a tee. The tee has a first port, a second port and a third port. Its characteristics are that: the first port is a fan connection port, the second port is a main fire air supply port, a baffle is blocked on the third port, and an air intake pipe penetrating the baffle is arranged on the baffle. The rear end of the air intake pipe is inserted into the inner cavity of the tee, and the front end is a small fire air supply port.

[0006] Preferably, the first port and the third port are oppositely arranged, and the rear end of the air intake pipe exceeds the rear wall of the second port.

[0007] Preferably, it further includes a main fire gas valve. The second port is connected with a main fire air supply pipe, a valve plate is rotatably installed in the main fire air supply pipe, a first sprocket is fixed on the rotating shaft of the valve plate, and a second sprocket is fixed on the rotating shaft of the main fire gas valve. The second sprocket is connected with the first sprocket through a transmission chain.

[0008] The present utility model further provides a burner capable of stabilizing a small flame, including a small-flame gas supply pipe, characterized in that: it further includes the above-mentioned gas supply mechanism capable of stabilizing a small flame, and the small-flame gas supply pipe is communicated with a small-flame air supply port.

[0009] Preferably, it further includes a base, on which a fire-distributing plate is installed. The fire-distributing plate is provided with a plurality of fire-distributing holes penetrating through the fire-distributing plate. A fire-gathering ring is crimped on the fire-distributing plate, and the fire-gathering ring is detachably connected to the base. The fire-distributing plate and the base enclose a premixing chamber, and the premixing chamber is communicated with a mixing gas pipe; the fire-distributing plate and the fire-gathering ring enclose a combustion chamber, and a side cavity communicated with the combustion chamber is opened in the fire-gathering ring, and the small-flame gas supply pipe extends into the side cavity.

[0010] Preferably, the fire-distributing holes are divided into upper column holes located in the upper part and lower column holes located in the lower part, and the inner diameter of the upper column holes is larger than that of the lower column holes.

[0011] Preferably, the fire-distributing holes are evenly distributed.

[0012] Preferably, a first stepped platform is provided in the base, and a second stepped platform is provided on the peripheral wall of the fire-distributing plate, and the second stepped platform is fitted with the first stepped platform.

[0013] Preferably, a top plate is provided at the front end of the mixing gas pipe. An air outlet middle hole is opened on the top plate, and a plurality of swirl components are further provided on the top plate. The swirl components are distributed along the circumferential direction of the air outlet middle hole. The swirl component includes an air outlet hole opened on the top plate and a swirl plate obliquely arranged on the air outlet hole.

[0014] Preferably, a main-fire gas burner pipe is inserted into the rear part of the mixing gas pipe, and a main-fire gas valve is fitted on the main-fire gas burner pipe. The rear part of the mixing gas pipe is also connected with a main-fire air supply pipe. The front end of the main-fire gas burner pipe is located in front of the air supply pipe. The front end of the main-fire gas burner pipe is blocked with a blind plate. A gas outlet hole is opened on the side wall of the main-fire gas burner pipe, and a swirl disc is further provided on the main-fire gas burner pipe. The swirl disc is located behind the gas outlet hole.

[0015] The present utility model further provides a stove, including a burner, and the burner is the above-mentioned burner capable of stabilizing a small flame.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. Since a baffle is blocked on the third through port, and a gas extraction pipe penetrating through the baffle is provided on the baffle, the rear end of the gas extraction pipe is inserted into the inner cavity of the tee and the front end is a small-flame air supply port, so that the gas extraction pipe only extracts part of the gas in the tee to supply to the small flame, reducing the influence of the air flow disturbance brought by the main-fire air supply port in the tee on the small flame, making the air supply of the small flame more stable, and thus helping the small flame to burn stably.

[0018] 2. Since the first through-port and the third through-port are oppositely arranged, and the rear end of the air intake pipe extends beyond the rear wall of the second through-port, making the rear end of the air intake pipe closer to the first through-port than the second through-port, the peripheral wall of the air intake pipe can be used to block the second through-port, further reducing the influence of air flow disturbance at the second through-port.

[0019] 3. Since the second through-port is connected to the main fire air supply pipe, a valve plate is rotatably installed in the main fire air supply pipe, a first sprocket is fixed on the rotating shaft of the valve plate, a second sprocket is fixed on the rotating shaft of the main fire gas valve, and the second sprocket is connected to the first sprocket through a transmission chain. It is possible to simultaneously adjust the opening degree of the valve plate while adjusting the opening degree of the main fire gas valve, thereby adjusting the air supply amount of the main fire and controlling the mixing ratio of the gas and air of the main fire within a relatively reasonable range, which can not only make the gas burn as fully as possible but also avoid heat loss caused by excessive air flow.

[0020] 4. Since the structure of the base is provided with a fire distributing plate and a fire gathering ring is crimped on the fire distributing plate, the fire distributing plate is in an independent structure, which is convenient for maintenance and replacement, and at the same time reduces the replacement cost.

[0021] 5. Since the fire distributing holes are divided into upper column holes located in the upper part and lower column holes located in the lower part, and the inner diameter of the upper column holes is larger than that of the lower column holes, the mixed gas has a release process during the flow in the fire distributing holes, reducing the air flow pressure, avoiding the phenomenon of flame separation, and at the same time simplifying the structure of the fire distributing holes, which is convenient for processing and forming.

[0022] 6. Since the fire distributing holes are evenly distributed, the combustion flames on the fire distributing plate are more evenly distributed, and the heat distribution is uniform, which is beneficial to improving the cooking taste.

[0023] 7. Since the base is provided with a first stepped platform, and the peripheral wall of the fire distributing plate is provided with a second stepped platform, and the second stepped platform is matched with the first stepped platform, the fire distributing plate can be inserted into the base, which is not only convenient for the supported installation of the fire distributing plate but also convenient for its installation positioning.

[0024] 8. Since the front end of the mixing pipe is provided with a top plate, an air outlet middle hole is opened on the top plate, and a plurality of swirl components are also provided on the top plate, the mixed gas in the mixing pipe can swirl out, enhancing the mixing effect of the mixed gas and also enhancing the gas flow in the middle of the swirl, increasing the effective flow area of the gas.

[0025] 9. Since the main fire gas pipe is inserted into the rear part of the mixing pipe, the main fire gas pipe is provided with a swirl disc, and a gas outlet hole is opened on the side wall of the main fire gas pipe, and the swirl disc is located behind the gas outlet hole, the swirling air and the laterally ejected gas are sheared and mixed, enhancing the mixing effect of the two.

[0026] 10. The utility model is ingeniously designed. By means of the air intake pipe, the disturbance of the second through port to the air of the small flame is reduced, so that the small flame can burn stably, and it is worthy of popularization and use in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the three-dimensional exploded structure diagram of the utility model;

[0028] Figure 2 is Figure 1 the enlarged view of the partial I in

[0029] Figure 3 is Figure 1 the view in the direction of A of

[0030] Figure 4 is Figure 3 the enlarged sectional view taken along the line B-B in

[0031] Figure 5 is Figure 3 the enlarged sectional view taken along the line C-C in

[0032] Figure 6 is Figure 3 the enlarged sectional view taken along the line D-D in

[0033] Figure 7 is Figure 3 the enlarged sectional view taken along the line E-E in

[0034] The reference numerals in the figures are: 1, base; 11, first step; 2, fire distributing plate; 21, fire distributing holes; 211, upper column holes; 212, lower column holes; 22, second step; 3, flame gathering ring; 31, side cavity; 4, combustion chamber; 5, mixing gas pipe; 51, top plate; 52, middle air outlet hole; 53, swirl plate; 54, air outlet holes; 6, air supply mechanism; 61, main fire air supply pipe; 62, first sprocket; 63, three-way joint; 631, first through port; 632, second through port; 633, third through port; 64, air intake pipe; 641, small fire air supply port; 65, valve plate; 66, baffle plate; 7, main fire gas pipe; 71, blind plate; 72, swirl disc; 73, gas outlet holes; 8, premixing chamber; 9, small fire gas supply pipe; 10, electronic ignition needle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further describes the present utility model in detail in conjunction with the drawings and the specific embodiments.

[0036] Referring to the flow direction of the air flow from the rear to the front when the present utility model is in the working state, the inlet end of the air flow is defined as the rear end, and correspondingly the outlet end of the air flow is defined as the front end; the end far from the ground is defined as the top end or the upper end, and correspondingly the other end close to the ground is defined as the lower end or the bottom end.

[0037] As Figure 3 shown, a tee joint 63 is provided in the air supply mechanism 6 of the present utility model. The tee joint 63 has a first port 631, a second port 632 and a third port 633. The first port 631 and the third port 633 are arranged opposite to each other, so that the axes of the first port 631 and the third port 633 are collinear. The axis of the second port 632 is perpendicular to the axes of the first port 631 and the second port 632. The first port 631 is a fan connection port, and the second port 632 is a main fire air supply port for connecting the main fire air supply pipe 61. As Figure 4 shown, a valve plate 65 is rotatably installed in the main fire air supply pipe 61. A first sprocket 62 is fixed on the rotating shaft of the valve plate 65, and a second sprocket is fixed on the rotating shaft of the main fire gas valve (not shown in the figure). The second sprocket is connected to the first sprocket 62 through a transmission chain. The third port 633 is blocked by a baffle 66, and an air intake pipe 64 penetrating through the baffle 66 is provided on the baffle 66. The rear end of the air intake pipe 64 is inserted into the inner cavity of the tee joint 63, and the front end is a small fire air supply port 641.

[0038] The present utility model applies the above air supply mechanism 6 to a burner. Specifically, as Figure 1 shown, a base 1 is provided in the burner. A first step 11 is provided in the base 1. A second step 22 is provided on the peripheral wall of the fire distributing plate 2. The second step 22 is fitted with the first step 11, so that the fire distributing plate 2 is installed on the base 1, which is convenient for the supported insertion of the fire distributing plate 2 and its installation positioning. The fire distributing plate 2 is provided with a plurality of fire distributing holes 21 penetrating through the fire distributing plate 2. As Figure 7 shown, the fire distributing holes 21 are divided into upper column holes 211 located in the upper part and lower column holes 212 located in the lower part. The inner diameter of the upper column holes 211 is larger than that of the lower column holes 212. The fire distributing holes 21 with such a structure enable the mixed gas to have a release process during the flow in the fire distributing holes 21, reduce the air flow pressure, avoid the phenomenon of flame separation, and at the same time simplify the structure of the fire distributing holes 21, which is convenient for processing and forming. The fire distributing holes 21 are evenly distributed on the fire distributing plate 2, so that the combustion flames on the fire distributing plate 2 are more evenly distributed and the heat is evenly distributed, which is beneficial to improving the cooking taste. A fire gathering ring 3 is press-fitted on the fire distributing plate 2. The fire gathering ring 3 is detachably connected to the base 1. Specifically, corresponding bolt holes are provided on the base 1 and the fire gathering ring 3, and bolts are fitted in the bolt holes to connect the base 1 and the fire gathering ring 3 through the bolts. It can also be other detachable connection methods such as pin connection or snap connection in the prior art, as long as the detachable connection can be realized and it is convenient for the disassembly and assembly of the fire distributing plate 2. No specific requirements are made for the specific detachable connection method. The fire distributing plate 2 and the base 1 enclose a premixing chamber 8. The premixing chamber 8 is communicated with a mixing pipe 5. The rear part of the mixing pipe 5 is respectively communicated with a main fire gas pipe 7 and a main fire air supply pipe 61. Specifically, the main fire gas pipe 7 is inserted into the rear part of the mixing pipe 5, and the front end of the main fire gas pipe 7 is located in front of the air supply pipe. As Figure 2As shown, a top plate 51 is provided at the front end of the mixing gas pipe 5. An air outlet middle hole 52 is formed on the top plate 51. A plurality of swirl components are also provided on the top plate 51. The swirl components are distributed circumferentially along the air outlet middle hole 52. An air outlet hole 54 formed on the top plate 51 and a swirl plate 53 inclined on the air outlet hole 54 are arranged in the swirl components. The fire distribution plate 2 and the fire gathering ring 3 enclose a combustion chamber 4. A side cavity 31 communicating with the combustion chamber 4 is formed in the fire gathering ring 3. The small fire gas supply pipe 9 extends into the side cavity 31. An electronic ignition needle 10 is also arranged in the side cavity 31. The small fire gas supply pipe 9 communicates with the small fire air supply port 641. The main fire gas valve is installed on the main fire gas pipe 7.

[0039] In order to enhance the mixing effect of the gas and air, as Figure 6 shown, a blind plate 71 is also blocked at the front end of the main fire gas pipe 7 in the present utility model. A gas outlet hole 73 is formed on the side wall of the main fire gas pipe 7. A swirl disc 72 is also provided on the main fire gas pipe 7. The swirl disc 72 is located behind the gas outlet hole 73, so that the swirling air and the laterally ejected gas undergo shear mixing, enhancing the mixing effect of the two. In order to further reduce the disturbing effect of the second through - port 632 on the air intake pipe 64, as Figure 5 shown, the rear end of the air intake pipe 64 is arranged beyond the rear wall of the second through - port 632, so that the rear end of the air intake pipe 64 is closer to the first through - port 631 than the second through - port 632. The peripheral wall of the air intake pipe 64 can be used to shield the second through - port 632, thereby further reducing the influence of the air flow disturbance of the second through - port 632.

[0040] The working process of the present utility model is as follows:

[0041] A blower is installed on the second through - port 632. The rear end of the small fire gas supply pipe 9 is connected to a small fire gas pipe. A small fire gas valve is installed on the small fire gas pipe. Both the main fire gas valve and the valve piece 65 are in a closed state. When in use, first, the blower and the small fire gas valve are opened. The blower supplies air to the small fire gas supply pipe 9 through the air supply pipe. The electronic ignition needle 10 ignites the mixed gas ejected from the small fire gas supply pipe 9 to light the small fire. Then, the main fire gas valve is opened, and at the same time, the valve piece 65 is driven to rotate to adjust the air flow rate entering the main fire air supply pipe 61, so that the air forms a swirl at the swirl disc 72 of the mixing gas pipe 5, undergoes shear mixing with the laterally ejected gas from the main fire gas pipe 7, and travels in a turbulent state with disturbance. Under the action of the swirl plate 53 at the front end of the mixing gas pipe 5, the swirl effect is enhanced again, so that the air and the gas are continuously mixed in the swirl, enter the premixing chamber, pass through the fire distribution holes 21 and enter the combustion chamber 4. The small fire ignites the mixed gas entering the combustion chamber 4 to form the main fire flame for cooking.

[0042] During the cooking process, the main fire power is adjusted by changing the opening degree of the main fire gas valve as needed. During the process of changing the opening degree of the main fire gas valve, the opening degree of the valve plate 65 also changes accordingly, thereby adjusting the flow rate of the air flowing through the main fire air supply pipe 61, forming a certain disturbing effect on the air flow in the tee 63. The gas extraction pipe 64 reduces this disturbing effect and ensures the stable combustion of the small fire.

[0043] The above burner can also be applied to a gas stove to form a gas stove capable of stably burning a small fire.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention.

Claims

1. A gas supply mechanism capable of stabilizing a small fire, comprising a tee, the tee having a first port, a second port and a third port, characterized in that: The first opening is the fan connection port, the second opening is the main fire air supply port, the third opening is blocked with a baffle, the baffle is provided with an air intake pipe penetrating the baffle, the rear end of the air intake pipe is inserted into the inner cavity of the tee, and the front end is the small fire air supply port.

2. The gas supply mechanism capable of stabilizing a small fire according to claim 1, characterized in that: The first opening is arranged opposite to the third opening, and the rear end of the air intake pipe is arranged beyond the rear wall of the second opening.

3. The gas supply mechanism capable of stabilizing a small fire according to claim 1 or 2, characterized in that: It also includes a main fire gas valve, the second port is connected to the main fire air supply pipe, a valve plate is rotatably installed in the main fire air supply pipe, a first sprocket is fixed on the rotating shaft of the valve plate, a second sprocket is fixed on the rotating shaft of the main fire gas valve, and the second sprocket is connected to the first sprocket through a transmission chain.

4. A burner capable of stable low-fire, comprising a low-fire gas supply pipe, characterized in that: It also includes the air supply mechanism capable of stabilizing a small fire as described in any one of claims 1 to 3, and the small fire air supply pipe is connected to the small fire air supply port.

5. The burner capable of stable low flame according to claim 4, characterized in that: It also includes a base, on which is installed a fire distribution plate, the fire distribution plate is provided with a plurality of fire distribution holes penetrating the fire distribution plate, a fire gathering ring is crimped on the fire distribution plate, the fire gathering ring is detachably connected to the base, the fire distribution plate and the base form a premixing chamber, the premixing chamber is connected to the gas mixing pipe; the fire distribution plate and the fire gathering ring form a combustion chamber, the fire gathering ring is provided with a side cavity connected to the combustion chamber, and a small fire gas supply pipe extends into the side cavity.

6. The burner capable of stable low flame according to claim 5, characterized in that: The fire-dividing hole is divided into an upper column hole located at the upper part and a lower column hole located at the lower part, and the inner diameter of the upper column hole is larger than that of the lower column hole.

7. The burner capable of stable low flame according to claim 5 or 6, characterized in that: The base is provided with a first step platform, and the peripheral wall of the fire distribution plate is provided with a second step platform, and the second step platform is matched with the first step platform.

8. The burner capable of stable low flame according to claim 5 or 6, characterized in that: The front end of the mixing pipe is provided with a top plate, which is provided with an outlet hole. The top plate is also provided with a plurality of swirl components, which are distributed along the circumference of the outlet hole. The swirl components include an outlet hole opened on the top plate and a swirl plate obliquely arranged on the outlet hole.

9. The burner capable of stable low flame according to claim 5 or 6, characterized in that: A main fire gas pipe is inserted at the rear of the mixing pipe, and a main fire gas valve is installed on the main fire gas pipe. The rear of the mixing pipe is also connected to the main fire air supply pipe. The front end of the main fire gas pipe is located in front of the air supply pipe. The front end of the main fire gas pipe is blocked with a blind plate. A gas outlet is opened on the side wall of the main fire gas pipe. The main fire gas pipe is also provided with a swirl disc, and the swirl disc is located behind the gas outlet.

10. A stove, comprising a burner, characterized in that: The burner is a burner capable of stable low flame as described in any one of claims 4 to 9.

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