Gas stove and stove comprising same

Abstract

The gas stove comprises an outer ring gas mixing chamber and further comprises an air cavity, the periphery of the outer ring gas mixing chamber is sleeved with the air cavity, the air cavity comprises at least one air inlet channel and a plurality of air supplementing holes, the two ends of the air inlet channel communicate with the air cavity and external air correspondingly, and the air supplementing holes are communicated with the air cavity. The air inlet is used for conveying air into the air cavity; the air cavity is communicated with the outer ring gas mixing chamber through the air supplementing hole and is used for conveying air into the outer ring gas mixing chamber; the air supplement holes are obliquely formed, the air inlet direction of the air supplement holes is consistent with the inclination direction of the air supplement holes, and the included angle between the air inlet direction of the air supplement holes and the flowing direction of fuel gas in the gas stove is an acute angle. According to the gas stove, gas is supplemented to the outer ring gas mixing chamber, the injection performance of the outer ring gas mixing chamber is effectively improved, the air supplementing holes are obliquely formed, the acute angle is formed between the air inlet direction and the gas flowing direction, gas can be prevented from flowing in the direction opposite to the air inlet direction, and the gas is effectively prevented from flowing backwards through the air supplementing holes and leaking to the outside.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking stoves, and particularly relates to a gas stove and a cooking stove including the same. Background Art

[0002] At present, the load energy efficiency requirements of cooking stoves are being upgraded. The primary method is to improve the premixing ratio by optimizing the profile of the ejector tube and the overall ejector resistance. However, the natural ejector ability is limited, making it difficult to meet the air demand for complete combustion.

[0003] Traditional cooking stoves rely on the natural ejector action of the gas ejector to draw in air. However, the natural ejector ability is insufficient to provide enough air volume for complete combustion of the gas. In some scenarios of high-power cooking stoves or those with high requirements for combustion efficiency, this traditional method often results in an unsatisfactory air-gas mixing ratio, leading to incomplete combustion and affecting the thermal efficiency and energy efficiency rating of the cooking stove. These factors make it difficult for existing methods of improving the premixing ratio to achieve an ideal energy efficiency improvement effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of insufficient ejector performance in the outer-ring mixing chamber of the combustion stove in the prior art, and to provide a gas stove and a cooking stove including the same.

[0005] The present invention solves the above technical problem by the following technical solutions:

[0006] A gas stove includes a mixing chamber, the mixing chamber includes an outer-ring mixing chamber, the gas stove further includes an air chamber, the air chamber is sleeved on the outer periphery of the outer-ring mixing chamber, the air chamber includes at least one air inlet channel and a plurality of air supply holes, both ends of the air inlet channel are respectively communicated with the air chamber and the external air, and are used for transporting air into the air chamber; a plurality of the air supply holes penetrate from the inner wall of the air chamber to the outer wall of the outer-ring mixing chamber, and the air chamber is communicated with the outer-ring mixing chamber through the air supply holes, and is used for conveying air into the outer-ring mixing chamber; the air supply holes are inclined, the air inlet direction of the air supply holes is consistent with the inclination direction of the air supply holes, and the included angle between the air inlet direction of the air supply holes and the flowing direction of the gas in the gas stove is an acute angle.

[0007] In this solution, an air chamber is arranged outside the outer-ring gas mixing chamber of the gas stove to supply air to the outer-ring gas mixing chamber, solving the problem of low entrainment coefficient due to the high load of the outer-ring gas mixing chamber, effectively improving the entrainment performance. Arranging the air chamber on the outer periphery of the outer-ring gas mixing chamber can ensure uniform air supply through the air supply holes while preventing the air chamber from occupying too much space and affecting the layout of other components. Among them, the air supply holes are arranged obliquely, and the air inlet direction forms an acute angle with the gas flow direction. At this time, according to the vector decomposition result of the gas flow direction, the gas can avoid flowing in the direction opposite to the inlet direction, effectively preventing the gas from flowing back through the air supply holes and causing gas leakage to the outside of the gas mixing chamber.

[0008] Preferably, a plurality of the air supply holes are uniformly arranged along the circumferential direction of the air chamber, and / or the air supply holes are close to the upper surface of the outer-ring gas mixing chamber.

[0009] In this solution, by arranging the air supply holes uniformly, the air chamber sleeved on the circumferential direction of the outer-ring gas mixing chamber can supply air to the inside of the outer-ring gas mixing chamber uniformly, avoiding the uneven firepower situation where part of the burner burns vigorously and part burns insufficiently due to uneven air supply, making the firepower of the burner more stable. Arranging the air supply holes close to the upper surface of the outer-ring gas mixing chamber reduces the air supply pressure, avoiding the situation of large intake pressure and insufficient air supply due to too low installation position. At the same time, when the gas flows from the gas mixing chamber to the burner cap

[0010] Preferably, the gas stove further includes a base, the base is connected above the gas mixing chamber, and a plurality of gas channels are arranged inside the base, and at least part of the air supply holes are communicated with the gas channels.

[0011] In this solution, arranging the base above the gas mixing chamber not only plays a role in connecting the gas mixing chamber with the upper-layer gas stove structure, but also the gas channels are arranged inside the base to transport the gas in the outer-ring gas mixing chamber to the upper layer for combustion. Among them, part of the air supply holes are communicated with the gas channels, so that when the gas flows into the gas channels, air can be directly supplied to the gas channels, making the air supply more sufficient and direct, and effectively improving the air supply effect.

[0012] Preferably, the outer-ring gas mixing chamber is further communicated with an outer-ring nozzle, and the sum of the total areas of a plurality of the air supply holes opened on the outer wall of the outer-ring gas mixing chamber is 10 to 20 times the total area of the outer-ring nozzle.

[0013] In this solution, the above setting can ensure that the intake air volume during air supply is within a reasonable range, effectively controlling the air supply work and improving the controllability of air supply while meeting the requirement of improving the entrainment performance.

[0014] Preferably, one end of the air intake channel is communicated with the air chamber, and the other end of the air intake channel is communicated with external air;

[0015] and / or the other end of the intake passage communicates with a gas supply device.

[0016] In this solution, multiple intake passages can be provided to deliver air to the air cavity through multiple paths. The gas passage can be directly connected to the outside for air supplement. During combustion, the air cavity is in a negative pressure state, and air can be automatically delivered into the air cavity without setting other structures, which is simple and practical. The gas passage can also be connected to a gas supply device. When a large amount of air supplement is required, if the automatic air supplement is not sufficient, a large amount of air can be supplemented through the gas supply device. Using the gas supply device can also accurately control the air supplement amount, so that the combustion effect can be accurately controlled.

[0017] Preferably, the air cavity is provided with an intake passage communicating with the outside air, and an intake joint is arranged at one end of the intake passage located in the outside air. The inside of the intake joint includes a connecting pipe, and the diameter of the connecting pipe is smaller than the diameter of the intake passage.

[0018] In this solution, the air cavity is only provided with one intake passage, and the intake passage is directly connected to the outside air to automatically supplement air through the pressure difference between the air cavity and the outside. An intake joint is also arranged at the outer end of the intake passage. The change in the diameter between the intake joint and the intake passage can reduce the flow rate of air when it enters the air cavity, making the air supplement more gentle and controllable, and avoiding the situation that the combustion firepower is uncontrollable due to excessive air supplement amount. When air supplement is not required, the intake joint can be directly closed, and the gas stove can be used normally.

[0019] Preferably, the gas stove further includes an inner ring mixing chamber and a base. The outer ring mixing chamber is sleeved on the outer periphery of the inner ring mixing chamber, and the mixing chamber is connected to the bottom of the base;

[0020] The inner ring mixing chamber is provided with a first assembly part, and the base is provided with a second assembly part. The first assembly part and the second assembly part are arranged corresponding to each other in the vertical direction, and the first assembly part and the second assembly part are connected by a connecting piece.

[0021] In this solution, by providing corresponding assembly parts on the inner ring mixing chamber and the base, the fastening method of the two is changed from the outer ring to the inner ring and is connected by a connecting piece, with a simple structure and good fastening effect. The arrangement on the inner ring mixing chamber will not affect the air supplement work of the outer ring mixing chamber, which is adapted to the gas stove in this solution.

[0022] Preferably, the first assembly part is a groove structure, the second assembly part is a through-hole structure, the connecting piece is an assembly screw, and the assembly screw passes through the first assembly part and extends into the second assembly part for connection.

[0023] In this solution, the connecting piece is set as an assembly screw, which has a simple structure and low cost. The groove structure and the through-hole structure are aligned, and the assembly screw is inserted for fastening. The fastening effect is good and the volume is compact, without affecting the use of other components of the burner.

[0024] Preferably, the gas stove further includes an inner-ring burner cap and an outer-ring burner cap. The inner-ring burner cap and the outer-ring burner cap are connected above the base, and the inner-ring burner cap covers the inner-ring mixing chamber, and the outer-ring burner cap covers the outer-ring mixing chamber.

[0025] In this solution, two independent burner caps, namely the inner-ring burner cap and the outer-ring burner cap, are provided to cover the mixing chamber and the outer-ring mixing chamber respectively, so that they correspond one by one to form different fire powers, which is convenient for air supplement according to the combustion condition of the outer-ring burner cap.

[0026] A cooker, which includes the gas stove as described in any one of the above settings.

[0027] The positive and progressive effects of the present invention are as follows: The gas stove is provided with an air chamber outside the outer-ring mixing chamber for air supplement to the outer-ring mixing chamber, which solves the problem of low entrainment coefficient due to the large load of the outer-ring mixing chamber, effectively improves the entrainment performance, and arranging the air chamber on the outer periphery of the outer-ring mixing chamber can ensure uniform air supplement through the air supply holes while the air chamber does not occupy too much space and affect the layout of other components. Among them, the air supply holes are arranged obliquely, and the air inlet direction forms an acute angle with the gas flow direction. At this time, according to the vector decomposition result of the gas flow direction, the gas can avoid flowing in the direction opposite to the inlet direction, effectively avoiding the backflow of the gas through the air supply holes and causing the gas to leak outside the mixing chamber. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the mixing chamber structure of the embodiment in the present invention;

[0029] Figure 2 It is a cross-sectional view of the mixing chamber and the intake passage of the embodiment in the present invention;

[0030] Figure 3 It is a cross-sectional view of the mixing chamber structure of the embodiment in the present invention;

[0031] Figure 4 It is a schematic diagram of the base structure of the embodiment in the present invention;

[0032] Figure 5 It is a cross-sectional view of the burner of the embodiment in the present invention;

[0033] Figure 6 It is a schematic diagram of the burner structure of the embodiment in the present invention.

[0034] Description of the Reference Numerals:

[0035] Mixing chamber 1

[0036] Outer ring mixing chamber 11

[0037] Inner ring mixing chamber 12

[0038] Air chamber 2

[0039] Air supplement hole 21

[0040] Air intake passage 22

[0041] Air intake joint 23

[0042] Connection passage 231

[0043] Base 3

[0044] Gas passage 31

[0045] First assembly part 41

[0046] Second assembly part 42

[0047] Connecting piece 43

[0048] Outer ring burner cap 51

[0049] Inner ring burner cap 52 Specific implementation mode

[0050] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments hereby.

[0051] In this embodiment, a gas stove is provided. As Figures 1 - 6 shown, it includes a mixing chamber 1. The mixing chamber 1 includes an outer ring mixing chamber 11. The gas stove further includes an air chamber 2. The air chamber 2 is sleeved on the outer periphery of the outer ring mixing chamber 11. The air chamber 2 includes at least one air intake passage 22 and a plurality of air supplement holes 21. The two ends of the air intake passage 22 are respectively communicated with the air chamber 2 and the external air, and are used for transporting air into the air chamber 2; the plurality of air supplement holes 21 penetrate from the inner wall of the air chamber 2 to the outer wall of the outer ring mixing chamber 11. The air chamber 2 is communicated with the outer ring mixing chamber 11 through the air supplement holes 21, and is used for transporting air into the outer ring mixing chamber 11; the air supplement holes 21 are inclined. The air intake direction of the air supplement holes 21 is consistent with the inclination direction of the air supplement holes 21, and the included angle between the air intake direction of the air supplement holes 21 and the flowing direction of the gas in the gas stove is an acute angle.

[0052] Among them, the gas stove is provided with an air chamber 2 outside the outer-ring mixing chamber 11 to supply air to the outer-ring mixing chamber 11, solving the problem of low entrainment coefficient due to the large load of the outer-ring mixing chamber 11, effectively improving the entrainment performance. Arranging the air chamber 2 on the outer periphery of the outer-ring mixing chamber 11 can ensure uniform air supply through the air supply holes 21 while preventing the air chamber 2 from occupying too much space and affecting the layout of other components. Among them, the air supply holes 21 are arranged obliquely, and the air inlet direction forms an acute angle with the gas flow direction. At this time, according to the vector decomposition result of the gas flow direction, the gas can avoid flowing in the direction opposite to the inlet direction, effectively preventing the gas from flowing back through the air supply holes 21 and leaking the gas to the outside of the mixing chamber 1. Specifically, when the gas flow direction forms an acute angle with the air inlet direction, the component of the gas velocity vector in the air inlet direction is small, while the component in the vertical direction is large. The result of this vector decomposition makes the gas more inclined to flow along the main flow direction of the burner rather than flowing back into the air inlet channel 22, thus effectively preventing the gas from flowing back and leaking through the air supply holes 21.

[0053] Furthermore, there are multiple schemes for the arrangement of the air supply holes 21. The first one: multiple air supply holes 21 are evenly arranged along the circumferential direction of the air chamber 2; the second one: the air supply holes 21 are close to the upper surface of the outer-ring mixing chamber 11; the third one: multiple air supply holes 21 are evenly arranged along the circumferential direction of the air chamber 2, and at the same time, the air supply holes 21 are close to the upper surface of the outer-ring mixing chamber 11.

[0054] Specifically, in this embodiment, as Figures 1 - 3 shown, the third arrangement method is adopted. By evenly arranging the air supply holes 21, the air chamber 2 sleeved on the circumferential direction of the outer-ring mixing chamber 11 can uniformly supply air to the inside of the outer-ring mixing chamber 11, avoiding the uneven firepower situation where some parts of the burner burn vigorously and some parts burn insufficiently due to uneven air supply, and making the firepower of the burner more stable. Arranging the air supply holes 21 close to the upper surface of the outer-ring mixing chamber 11 reduces the air supply pressure, avoiding the situation of large intake pressure and insufficient air supply due to too low setting position. At the same time, air is supplied when the gas flows from the mixing chamber 1 to the burner cap, and the air supply efficiency is higher. In other embodiments, the other two schemes can also be adopted according to actual needs, as long as the setting of the air supply holes 21 can meet the actual air supply requirements.

[0055] In this embodiment, the gas stove further includes a base 3, as Figure 4As shown in the figure, the base 3 is connected above the gas mixing chamber 1. There are multiple gas channels 31 arranged inside the base 3, and at least some of the air supply holes 21 are connected to the gas channels 31. Arranging the base 3 above the gas mixing chamber 1 not only serves to connect the gas mixing chamber 1 with the upper-layer gas stove structure, but also the gas channels 31 are arranged inside the base 3 to transport the gas in the outer-ring gas mixing chamber 11 to the upper layer for combustion. Among them, some of the air supply holes 21 are connected to the gas channels 31, so that when the gas flows towards the gas channels 31, air can be directly supplied to the gas channels 31, making the air supply more sufficient and direct, and effectively improving the air supply effect.

[0056] Specifically, in this embodiment, eight air supply holes 21 are provided, and four gas channels 31 are arranged on the base 3. The air supply holes 21 are evenly arranged on the inner wall of the air chamber 2, and the gas channels 31 are also evenly arranged along the circumference of the base 3. Among them, four air supply holes 21 are respectively connected to the four gas channels 31, and the remaining four air supply holes 21 are respectively arranged between two adjacent gas channels 31.

[0057] Furthermore, the outer-ring gas mixing chamber 11 is also connected to an outer-ring nozzle. The sum of the total areas of the multiple air supply holes 21 opened on the outer wall of the outer-ring gas mixing chamber 11 is 10 to 20 times the total area of the outer-ring nozzle. The above setting can ensure that the air intake volume during air supply is within a reasonable range, effectively controlling the air supply work, and improving the controllability of the air supply while meeting the requirement of improving the injection performance. Specifically, in this embodiment, the total air intake volume of the gas channels 31 is controlled within 0.4 g / s to 0.8 g / s.

[0058] In this embodiment, as Figure 2 shown, one end of the air intake channel 22 is connected to the air chamber 2, and the other end of the air intake channel 22 is connected to the external air, or the other end of the air intake channel 22 is connected to the gas supply device. Multiple air intake channels 22 can be provided to transport air to the air chamber 2 through various channels. Among them, the gas channels 31 can be directly connected to the outside for air supply. During combustion, the air chamber 2 is in a negative pressure state, and air can be automatically transported into the air chamber 2 without setting other structures, which is simple and practical. The gas channels 31 can also be connected to the gas supply device. When a large amount of air supply is required, if the automatic air supply is not sufficient, a large amount of air supply can be carried out through the gas supply device. Using the gas supply device can also accurately control the air supply volume, so as to accurately control the combustion effect.

[0059] Specifically, the air chamber 2 is provided with an air inlet passage 22 communicating with the external air. An air inlet joint 23 is provided at one end of the air inlet passage 22 located in the external air. The interior of the air inlet joint 23 includes a connecting pipe, and the diameter of the connecting pipe is smaller than that of the air inlet passage 22. The air chamber 2 is only provided with one air inlet passage 22, and the air inlet passage 22 directly communicates with the external air, and automatic air replenishment is carried out through the pressure difference between the air chamber 2 and the outside. An air inlet joint 23 is also provided at the outer end of the air inlet passage 22. The change in the diameter between the connecting passage 231 and the air inlet passage 22 can reduce the flow rate of the air when it enters the air chamber 2, making the air replenishment more gentle and controllable, and avoiding the situation where the combustion firepower is uncontrollable due to excessive air replenishment. When air replenishment is not required, the air inlet joint 23 can be directly closed, and the gas stove can be used normally. In other embodiments, the air chamber 2 can communicate with multiple air inlet passages 22, as long as the air replenishment requirements can be met and the vitality can be controlled.

[0060] In this embodiment, as Figure 5 shown, the gas stove further includes an inner ring mixing chamber 12. The outer ring mixing chamber 11 is sleeved on the outer periphery of the inner ring mixing chamber 12, and the mixing chamber 1 is connected to the bottom of the base 3; the inner ring mixing chamber 12 is provided with a first assembly portion 41, and the base 3 is provided with a second assembly portion 42. The first assembly portion 41 and the second assembly portion 42 are arranged corresponding to each other in the vertical direction, and the first assembly portion 41 and the second assembly portion 42 are connected by a connecting member 43. By providing corresponding assembly portions in the inner ring mixing chamber 12 and the base 3, the fastening method between the two is changed from the outer ring to the inner ring, and they are connected by the connecting member 43, with a simple structure and good fastening effect. The setting in the inner ring mixing chamber 12 will not affect the air replenishment work of the outer ring mixing chamber 11, and it is adapted to the gas stove in this solution. In other embodiments, the base 3 and the mixing chamber 1 of the gas stove can also be connected by other structures, as long as it does not affect the air replenishment from the air chamber 2 to the outer ring mixing chamber 11.

[0061] Specifically, the first assembly portion 41 is a groove structure, the second assembly portion 42 is a through-hole structure, and the connecting member 43 is an assembly screw. The assembly screw passes through the first assembly portion 41 and extends into the second assembly portion 42 for connection. Setting the connecting member 43 as an assembly screw has a simple structure and low cost. The groove structure and the through-hole structure are aligned, and the assembly screw is passed through for fastening, with good fastening effect and compact volume, and it will not affect the use of other components of the burner. In other embodiments, the first assembly portion 41, the second assembly portion 42, and the connecting member 43 can also adopt other structures, as long as the mixing chamber 1 and the base 3 can be fastened.

[0062] In this embodiment, a cooker is also provided, and the cooker includes the gas stove arranged as described above.

[0063] Specifically, as Figures 5 - 6As shown in the figure, the gas stove further includes an inner ring burner cover 52 and an outer ring burner cover 51. The inner ring burner cover 52 and the outer ring burner cover 51 are connected above the base 3, and the inner ring burner cover 52 covers the inner ring gas mixing chamber 12, and the outer ring burner cover 51 covers the outer ring gas mixing chamber 11. Two independent burner covers, namely the inner ring burner cover 52 and the outer ring burner cover 51, are provided to cover the gas mixing chamber 1 and the outer ring gas mixing chamber 11 respectively, so that they correspond one by one to form different fire powers, which is convenient for air supplement according to the combustion condition of the outer ring burner cover 51.

[0064] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A gas stove, comprising a gas mixing chamber, the gas mixing chamber including an outer ring gas mixing chamber, characterized in that, The gas stove further includes an air cavity, the air cavity is sleeved on the outer periphery of the outer ring mixing chamber, and the air cavity includes at least one air inlet channel and a plurality of air compensation holes. Two ends of the air inlet channel are respectively communicated with the air cavity and the external air, and are used for transporting air into the air cavity. A plurality of the air compensation holes penetrate from the inner wall of the air cavity to the outer wall of the outer ring mixing chamber, and the air cavity is communicated with the outer ring mixing chamber through the air compensation holes, and is used for conveying air into the outer ring mixing chamber. The air compensation holes are inclined, the air inlet direction of the air compensation holes is consistent with the inclination direction of the air compensation holes, and the included angle between the air inlet direction of the air compensation holes and the flowing direction of the gas in the gas stove is an acute angle.

2. The gas stove according to claim 1, characterized in that, A plurality of the air compensation holes are uniformly arranged along the circumferential direction of the air cavity, and / or the air compensation holes are close to the upper surface of the outer ring mixing chamber.

3. The gas stove according to claim 1, characterized in that, The gas stove further includes a base, the base is connected above the mixing chamber, and a plurality of gas channels are arranged inside the base, and at least part of the air compensation holes are communicated with the gas channels.

4. The gas stove according to claim 1, wherein, The outer ring mixing chamber is further communicated with an outer ring nozzle, and the sum of the total areas of the plurality of air compensation holes opened on the outer wall of the outer ring mixing chamber is 10 to 20 times the total area of the outer ring nozzle.

5. The gas stove according to claim 1, wherein One end of the air inlet channel is communicated with the air cavity, and the other end of the air inlet channel is communicated with the external air. And / or the other end of the air inlet channel is communicated with a gas supply device.

6. The gas stove according to claim 5, wherein, The air cavity is provided with one air inlet channel communicated with the external air, and an air inlet joint is arranged at the end of the air inlet channel located in the external air, and the inside of the air inlet joint includes a communicating pipe, and the diameter of the communicating pipe is smaller than the diameter of the air inlet channel.

7. The gas stove according to claim 1, characterized in that, The gas stove further includes an inner ring mixing chamber and a base, the outer ring mixing chamber is sleeved on the outer periphery of the inner ring mixing chamber, and the mixing chamber is connected to the bottom of the base. The inner ring mixing chamber is provided with a first assembly part, the base is provided with a second assembly part, the first assembly part and the second assembly part are arranged corresponding to each other in the vertical direction, and the first assembly part and the second assembly part are connected by a connecting piece.

8. The gas stove according to claim 7, wherein, The first assembly part is a groove structure, the second assembly part is a through hole structure, the connecting piece is an assembly screw, and the assembly screw passes through the first assembly part and extends into the second assembly part for connection.

9. The gas stove according to claim 7, wherein, The gas stove further includes an inner ring burner cap and an outer ring burner cap, the inner ring burner cap and the outer ring burner cap are connected above the base, and the inner ring burner cap covers the inner ring mixing chamber, and the outer ring burner cap covers the outer ring mixing chamber.

10. A cooking appliance, characterized in that, The cooking appliance includes the gas stove according to any one of claims 1-9.

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