CN221301319U - Air inlet assembly and kitchen range - Google Patents

Abstract

The utility model provides an air inlet assembly and a stove. The air inlet assembly comprises a connecting main body, an air inlet, an inner ring fire air outlet and an outer ring fire air outlet are arranged on the connecting main body, an inner ring fire channel is formed between the air inlet and the inner ring fire air outlet, and an outer ring fire channel is formed between the air inlet and the outer ring fire air outlet; the inner ring fire channel is provided with a first flow limiting structure and is divided into a first section connected to the air inlet and a second section connected to the air outlet of the inner ring fire through the first flow limiting structure, and the outer ring fire channel is provided with a second flow limiting structure and is divided into a third section connected to the air inlet and a fourth section connected to the air outlet of the outer ring fire through the second flow limiting structure; an auxiliary gas inlet is formed in the third section, a first auxiliary gas outlet is formed in the second section, a second auxiliary gas outlet is formed in the fourth section, an auxiliary gas channel is formed among the auxiliary gas inlet, the first auxiliary gas outlet and the second auxiliary gas outlet, and the auxiliary gas channel is switched between a conducting state and a closing state through a control valve.

Description

Air inlet assembly and kitchen range

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to an air inlet assembly and a kitchen range.

Background

Gas cooktops are commonly used kitchen appliances in daily life, and air inlet assemblies are an important component of gas cooktops. The gas inlet assembly can generally convey gas to the small fire injection pipe and the large fire injection pipe respectively through the gas inlet, the small fire gas outlet and the large fire gas outlet, and then can convey gas to the small fire gas outlet chamber and the large fire gas outlet chamber respectively, and finally flames are formed at the inner ring fire cover and the outer ring fire cover for cooking by users.

In general, some users like to cook dishes meeting the taste by means of rapid stir-frying, and in order to meet the requirements of rapid stir-frying of users, a gas stove is required to generate larger flames in a short time, and thus, an air inlet assembly is required to provide a large amount of gas in a short time.

The existing gas cooker can only realize big-fire stir-frying or small-fire stir-frying. However, when the inner ring is fried with big fire, the fire power of the inner ring is smaller, so that the pan is heated unevenly during the frying, and the center of the pan can not realize the strong fire frying; when the outer ring is stir-fried with small fire, the fire power of the outer ring is small, which may cause uneven heating of the pan during stir-frying, or the whole fire power is still insufficient during stir-frying.

Disclosure of utility model

In order to at least partially solve the problems of the prior art, according to one aspect of the present utility model, an air intake assembly is provided. The air inlet assembly comprises a connecting main body, an air inlet, an inner ring fire air outlet and an outer ring fire air outlet are arranged on the connecting main body, an inner ring fire channel is formed between the air inlet and the inner ring fire air outlet, and an outer ring fire channel is formed between the air inlet and the outer ring fire air outlet; the inner ring fire channel is provided with a first flow limiting structure, the inner ring fire channel is divided into a first section connected to the air inlet and a second section connected to the inner ring fire air outlet through the first flow limiting structure, the outer ring fire channel is provided with a second flow limiting structure, and the outer ring fire channel is divided into a third section connected to the air inlet and a fourth section connected to the outer ring fire air outlet through the second flow limiting structure; an auxiliary gas inlet is formed in the third section, a first auxiliary gas outlet is formed in the second section, a second auxiliary gas outlet is formed in the fourth section, an auxiliary gas channel is formed among the auxiliary gas inlet, the first auxiliary gas outlet and the second auxiliary gas outlet, a control valve is arranged on the auxiliary gas channel, and the auxiliary gas channel is switched between a conducting state and a closing state through the control valve.

The air inlet assembly provided by the utility model still respectively conveys fuel gas through the inner annular fire channel and the outer annular fire channel, only the second section of the auxiliary air channel led to the inner annular fire channel and the fourth section of the outer annular fire channel are led out from the outer annular fire channel, and other parts of the air inlet assembly have structures similar to those of the conventional air inlet assembly, namely the overall structure is similar to that of the conventional air inlet assembly. However, as the first flow limiting structure is arranged on the inner annular fire channel, the second flow limiting structure is arranged on the outer annular fire channel, and the control valve controls the auxiliary gas channel to be in a closed state in normal use, the gas quantity on the second section of the inner annular fire channel and the gas quantity on the fourth section of the outer annular fire channel are smaller, the gas pressure is smaller, and the inner annular fire gas outlet and the outer annular fire gas outlet work at rated power; when the inner ring fire and the outer ring fire are required to be stir-fried with strong fire at the same time, the control valve controls the auxiliary gas channel to be in a conducting state, and the auxiliary gas channel supplements fuel gas for the second section of the inner ring fire channel and the fourth section of the outer ring fire channel, so that fuel gas quantity on the second section and the fourth section is increased, fuel gas pressure is increased, and the inner ring fire gas outlet and the outer ring fire gas outlet work at full load power. The efficiency of increasing the fuel gas volume to the firepower promotion is very high like this, and the strong fire quick-frying of inner ring fire and outer ring fire that realizes simultaneously receives the restriction of the structure of inner ring fire gas outlet and outer ring fire gas outlet very little moreover, can not appear the problem that the strong fire quick-frying firepower is insufficient that the full load power of inner ring fire gas outlet and/or outer ring fire gas outlet is too low. In addition, the quick-frying of strong fire of inner ring fire and outer ring fire is realized simultaneously, and the problem of uneven fire or insufficient fire still can not appear in the culinary art. In general, the air inlet assembly does not need a special four-way structure air inlet valve, not only can meet the daily demands of users, but also can realize that more fuel gas is conveyed to the external air outlet chamber when the users need, thereby meeting the requirements of inner ring fire and outer ring fire as well as strong fire stir-frying, and the air inlet assembly has simple structure and low cost.

The auxiliary gas channel is illustratively provided with a connection port, through which the auxiliary gas channel is divided into a first connection section connected to the auxiliary gas inlet, a second connection section connected to the first auxiliary gas outlet, and a third connection section connected to the second auxiliary gas outlet. The auxiliary gas channel is divided into three parts, namely a first connecting section, a second connecting section and a third connecting section at the connecting port, and the auxiliary gas channel is easier to produce, process and install.

Illustratively, neither the second connection section nor the third connection section is higher than the first connection section. Therefore, the connecting main body can be prevented from being transversely provided with excessive pipelines, the control valve for controlling the auxiliary air channel to be switched between the closed state and the conducting state can also be arranged at the lower part of the connecting main body, the space utilization rate of the air inlet assembly is higher, the structure is simpler, and the air inlet assembly is easy to realize.

The control valve comprises a valve main body and an adjusting piece, wherein the valve main body is positioned outside the connecting main body, the adjusting piece is movably connected to the valve main body and can move between a first position and a second position, and when the adjusting piece is positioned at the first position, the adjusting piece is positioned in the auxiliary gas channel and seals the connecting port, and the auxiliary gas channel is in a closed state; when the adjusting piece is positioned at the second position, a ventilation gap is formed between the adjusting piece and the connecting port, and the auxiliary air channel is in a conducting state. Such a control valve avoids the provision of complex structures within the connecting body, further simplifying the overall structure.

Illustratively, the adjustment member is extendable or retractable relative to the valve body, wherein the adjustment member is in the first position when the adjustment member is extended relative to the valve body; the adjustment member is in the second position when the adjustment member is retracted relative to the valve body. The telescopic movement of the adjusting piece relative to the valve main body is simpler, the structure of the control valve is simpler, and the structure of the integral device of the air inlet assembly can be simpler and is easy to realize.

Illustratively, the first location is at the connection port. The adjusting piece located at the first position is used for plugging the connecting port, so that the effect of plugging the connecting port by the adjusting piece can be better when the first position is located at the connecting port, the tightness of the auxiliary gas channel in the closed state is stronger, and the gas is prevented from flowing in the auxiliary gas channel in the closed state. And the first position is positioned at the connecting port, and when the regulating piece moves from the first position to the second position, the response of switching the auxiliary air channel from the closed state to the conducting state is quicker.

Illustratively, the line connecting the first location and the second location is perpendicular to the horizontal plane. For a control valve with a conventional structure, the vertically arranged control valve can save the space occupied by the whole device in the horizontal direction, and the design is such that the transverse space occupied by the whole device is smaller.

Illustratively, the flow area of the connection port is no greater than the flow area of any of the first, second, and third connection segments. On the one hand, the flow area of the connecting port is smaller than that of the first connecting section, that is, the flow area of the connecting port is smaller than that of the auxiliary gas inlet, so that the gas flow velocity at the connecting port is larger than that at the auxiliary gas inlet, the gas flow pressure at the connecting port is smaller than that at the auxiliary gas inlet, and the gas can enter the first connecting section from the outer ring fire channel through the auxiliary gas inlet more easily; on the other hand, the flow area of the connecting port is smaller than that of the second connecting section, that is, the flow area of the connecting port is smaller than that of the first auxiliary gas outlet, so that the gas flow velocity of the gas at the connecting port is larger than that of the gas at the first auxiliary gas outlet, and thus, in the process that the gas enters the second connecting section from the connecting port and reaches the first auxiliary gas outlet, the gas flow velocity is gradually reduced, and finally, when the gas enters the second section of the inner ring fire channel through the first auxiliary gas outlet, the turbulence generated by the gas flow is less, and the whole gas flow is more stable; in still another aspect, the flow area of the connection port is smaller than the flow area of the third connection section, that is, the flow area of the connection port is smaller than the flow area of the second auxiliary gas outlet, so that the gas flow velocity of the gas at the connection port is larger than the gas flow velocity of the gas at the second auxiliary gas outlet, and thus, in the process that the gas enters the third connection section from the connection port and reaches the second auxiliary gas outlet, the gas flow velocity is gradually reduced, and finally, when the gas enters the second section of the outer ring fire channel through the second auxiliary gas outlet, the turbulence generated by the gas flow is less, and the whole gas flow is more stable.

Illustratively, the connection port is circular with a diameter of not less than 3 mm. The circular connecting port is more adaptive to the conventional pipeline, the auxiliary gas channel with the circular connecting port is easier to install, the diameter of the connecting port is not smaller than 3mm, and the influence of the too small diameter of the connecting port on the flowing effect of fuel gas in the auxiliary gas channel can be avoided.

The first flow limiting structure is disposed on the inner annular fire channel near one end of the air inlet, and the first flow limiting structure is a flow limiting channel with a flow area not larger than that of the inner annular fire channel. The internal ring fire channel is divided into the first section and the second section by taking the form of the current limiting channel as the first current limiting structure, other parts are not required to be installed in the internal ring fire channel, the consistency of the internal structure of the whole device is good, and the situation that the current limiting structure falls off from the internal ring fire channel can not occur in the use process.

The second flow restricting structure is a flow restrictor disposed within the outer annular flame path, the flow restrictor forming a partial barrier to fluid within the outer annular flame path. The second flow restricting structure in the form of a flow restricting member is easy to disassemble and replace or maintain, and can also be replaced with flow restricting members of different sizes and structures according to different requirements.

Illustratively, the flow area of the first auxiliary gas outlet is no greater than the flow area of the second section. Such a first auxiliary gas outlet may ensure that gas may enter the second section of the inner annular fire passage via the first auxiliary gas outlet, and may further ensure that more gas may reach the inner annular fire gas outlet.

Illustratively, the flow area of the second assist gas outlet is no greater than the flow area of the fourth stage. Such a second auxiliary gas outlet may ensure that gas may enter the fourth section of the outer annular fire passage via the second auxiliary gas outlet, and may further ensure that more gas may reach the outer annular fire outlet.

Illustratively, the first assist gas outlet is circular with a diameter of not less than 2.5 mm. The circular first auxiliary gas outlet may be more adapted to conventional piping, while such an auxiliary gas channel is also easier to produce and install. The diameter of the first auxiliary gas outlet is not smaller than 2.5mm, so that the phenomenon that fuel gas cannot flow to the second section of the inner ring fire channel through the first auxiliary gas outlet due to the fact that the diameter of the first auxiliary gas outlet is too small is avoided.

The second subsidiary gas outlet is illustratively circular with a diameter of no less than 2.5 mm. The circular second auxiliary gas outlet may be more adapted to conventional piping, while such an auxiliary gas channel is also easier to produce and install. The diameter of the second auxiliary gas outlet is not smaller than 2.5mm, so that the phenomenon that fuel gas cannot flow to the fourth section of the outer ring fire channel through the second auxiliary gas outlet due to the fact that the diameter of the second auxiliary gas outlet is too small is avoided.

The inner ring fire nozzle member is connected to one end of the second section away from the first flow limiting structure, and an inner ring fire nozzle opening is arranged at one end of the inner ring fire nozzle member away from the connecting body, wherein the flow area of the inner ring fire nozzle opening is not larger than that of the second section. The flow area of the inner ring fire nozzle opening is smaller, the flow velocity of the fuel gas is increased after the fuel gas passes through the inner ring fire nozzle opening, the fluid pressure is reduced, the fuel gas enters the inner ring fire injection pipe to form negative pressure so as to facilitate mixing of external air, and then the generated fuel gas-air mixed gas is conveyed to an external inner ring air outlet chamber, so that the fuel gas can be combusted at an inner ring fire cover connected with the external inner ring air outlet chamber and flame is generated.

The first segment is connected to the first flow restricting structure, and the second segment is connected to the second flow restricting structure. The overflow area of the outer ring fire nozzle opening is smaller, the flow velocity of the fuel gas is increased after passing through the outer ring fire nozzle opening, the fluid pressure is reduced, and negative pressure is formed so as to facilitate mixing of external air, thereby generating fuel gas-air mixed gas. The end of the outer ring fire nozzle piece far away from the connecting main body is usually connected to an outer ring fire injection pipe, and in the outer ring fire injection pipe, the gas flowing out of the outer ring fire nozzle opening enters the outer ring fire injection pipe and is mixed with air, so that the gas-air mixed gas is generated and conveyed to an outer ring gas outlet chamber, and the gas-air mixed gas can be combusted and flame can be generated at an outer ring fire cover connected with the outer ring gas outlet chamber.

According to another aspect of the utility model, a cooktop is provided. The stove comprises a burner and any air inlet component as described above, wherein the burner comprises an inner ring air outlet chamber, an outer ring air outlet chamber, an inner ring fire injection pipe and an outer ring fire injection pipe, an inner ring fire air outlet is communicated to the inner ring air outlet chamber through the inner ring fire injection pipe, and an outer ring fire air outlet is communicated to the outer ring air outlet chamber through the outer ring fire injection pipe. The cooker not only can meet the daily demands of users, but also can realize the rapid stir-frying of inner ring fire and outer ring fire.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

FIG. 1 is a partial block diagram of a cooktop according to an exemplary embodiment of the present utility model;

FIG. 2 is a perspective view of an air intake assembly according to an exemplary embodiment of the present disclosure;

FIG. 3 is a side view of the air intake assembly of FIG. 2 in one orientation;

FIG. 4 is a side view of the air intake assembly of FIG. 2 in another orientation;

FIG. 5 is a top view of the air intake assembly shown in FIG. 2;

FIG. 6 is a cross-sectional view of the air intake assembly shown in FIG. 2, in a horizontal cross-section; and

Fig. 7 is a cross-sectional view of the intake assembly shown in fig. 2 in a vertical section.

Wherein the above figures include the following reference numerals:

100. A connecting body; 110. an inner annular fire passage; 111. a first section; 112. a second section; 113. a first flow restricting structure; 120. an outer annular fire passage; 121. a third section; 122. a fourth section; 123. a second flow restricting structure; 130. an auxiliary gas passage; 131. an auxiliary gas inlet; 132. a first auxiliary gas outlet; 133. a second auxiliary gas outlet; 134. a connection port; 135. a first connection section; 136. a second connection section; 137. a third connecting section; 140. an air inlet; 150. an inner ring fire air outlet; 151. an inner ring fire nozzle member; 1511. an inner annular fire nozzle opening; 160. an outer ring fire air outlet; 161. an outer annular fire nozzle member; 1611. an outer annular fire nozzle opening; 1612. a mixing hole; 170. an electromagnetic valve; 200. a control valve; 210. a valve body; 220. an adjusting member; 400. a burner; 410. an inner ring fire cover; 420. an outer ring fire cover; 430. an inner ring fire injection pipe; 440. and an outer ring fire injection pipe.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

According to one aspect of the present utility model, an air intake assembly is provided that may be applied to any suitable device, including but not limited to, a kitchen range. Thus, according to another aspect of the present utility model, a cooktop is provided.

As shown in fig. 1, the cooktop may include a burner 400 and any of the air intake assemblies described immediately below. The air intake assembly may include a connecting body 100 and the burner 400 may include an inner annular air outlet chamber, an outer annular air outlet chamber, an inner annular fire jet pipe 430 and an outer annular fire jet pipe 440. Generally, the inner ring fire injection pipe 430 can be communicated with the inner ring air outlet chamber, and after the fuel gas is introduced, small fire can be generated at the inner ring fire cover 410 communicated with the inner ring air outlet chamber; the outer ring fire injection pipe 440 may be connected to the outer ring gas outlet chamber, and after the gas is introduced, the outer ring gas outlet chamber may be connected to the outer ring fire cover 420 to generate a big fire. The air intake assembly and the cooking appliance will be described in detail with reference to the accompanying drawings.

Referring to fig. 2, the air intake assembly may be further provided with a solenoid valve 170, the burner 400 may be generally provided with an ignition needle and a thermocouple, the solenoid valve 170 may be connected to the ignition needle and the thermocouple, the ignition needle may ignite the fuel gas reaching the inner ring air outlet chamber and/or the outer ring air outlet chamber under the control of the solenoid valve 170, a flame is generated for cooking by a user, and the thermocouple may close the solenoid valve 170 in a state that the burner 400 is abnormally extinguished, so as to protect the whole apparatus. The solenoid valve 170 may be configured in accordance with relevant standards and specifications.

Referring to fig. 2, 3, 4 and 5, the air inlet assembly may include a connection body 100, and an air inlet 140, an inner ring fire air outlet 150 and an outer ring fire air outlet 160 may be disposed on the connection body 100, the inner ring fire air outlet 150 may be communicated to the inner ring air outlet chamber through an inner ring fire injection pipe 430, and the outer ring fire air outlet 160 may be communicated to the outer ring air outlet chamber through an outer ring fire injection pipe 440. An inner annular fire passage 110 may be formed between the air inlet 140 and the inner annular fire air outlet 150, and an outer annular fire passage 120 may be formed between the air inlet 140 and the outer annular fire air outlet 160. The air inlet 140, the inner annular fire air outlet 150, the outer annular fire air outlet 160, the inner annular fire passage 110 and the outer annular fire passage 120 are all integrally formed on the connecting body 100. After entering the connecting body 100 through the air inlet 140, the fuel gas can enter the inner annular fire channel 110 and further can reach the inner annular fire air outlet 150; may also enter the outer annular fire passage 120 and may reach the outer annular fire air outlet 160. The air inlet 140 may be communicated with an air inlet valve, which may control the gas outlet amounts at the inner ring fire air outlet 150 and the outer ring fire air outlet 160, for example, the air inlet valve may be a three-way structure, and the air inlet valve may be respectively communicated with the air inlet 140, the inner ring fire channel 110 and the outer ring fire channel 120, and by rotating such an air inlet valve, the gas outlet amounts entering the inner ring fire channel 110 and the outer ring fire channel 120 through the air inlet 140 may be adjusted, thereby controlling the gas outlet amounts at the inner ring fire air outlet 150 and the outer ring fire air outlet 160. Of course, there may be many ways of adjusting the amount of fuel gas reaching the inner ring fire air outlet 150 and the outer ring fire air outlet 160 through the air inlet 140, and the description thereof will be omitted.

When the air inlet assembly is applied to a kitchen range, the inner ring fire air outlet 150 can be communicated to the inner ring air outlet chamber through the inner ring fire injection pipe 430, the outer ring fire air outlet 160 can be communicated to the outer ring air outlet chamber through the outer ring fire injection pipe 440, and in this case, the inner ring fire channel 110 can be also called a small fire channel, and the outer ring fire channel 120 can be also called a big fire channel.

Referring to fig. 6, the inner annular fire passage 110 may be provided with a first flow restricting structure 113, and the inner annular fire passage 110 may be divided into a first section 111 connected to the air inlet 140 and a second section 112 connected to the inner annular fire air outlet 150 by the first flow restricting structure 113. The first flow-limiting structure 113 may be a section with a smaller flow-through area formed on the inner ring fire channel 110, at this time, the first flow-limiting structure 113 is disposed on the inner ring fire channel 110 in the form of a flow-limiting channel, and after the fuel gas enters the inner ring fire channel 110 through the air inlet 140, the fuel gas is subjected to the flow-limiting effect of the flow-limiting channel in the process of reaching the inner ring fire air outlet 150 through the flow-limiting channel in the inner ring fire channel 110 because the flow-through area of the flow-limiting channel is not larger than the flow-through area of the inner ring fire channel 110, so that the fuel gas pressure on the second section 112 is smaller. It should be noted that the embodiment shown in fig. 6 illustrates the portion of the inner annular flame path 110 closest to the air inlet 140, which is in fact the most limiting case, where the length of the first section 111 may be considered to be very small or the length of the first section 111 may be considered to be zero, but the inner annular flame path 110 may still be considered to be divided by the flow limiting path into a first section 111 connected to the air inlet 140 and a second section 112 connected to the inner annular flame outlet 150. It will be appreciated that in other embodiments not shown, the restricted flow passage may be provided at any location on the inner ring fire passage 110. Of course, the first flow limiting structure 113 may be a flow limiting member or other flow limiting structures of various forms, so long as it is within the scope of the present application to provide a flow limiting structure with a smaller gas pressure on the second section 112.

The outer ring fire passage 120 may be provided with a second flow restricting structure 123, and the outer ring fire passage 120 may be divided into a third section 121 connected to the air inlet 140 and a fourth section 122 connected to the outer ring fire outlet 160 by the second flow restricting structure 123. Referring to fig. 6, the second flow restricting structure 123 may be in the form of a flow restrictor. The flow restrictor may provide a partial barrier to the fluid within the outer annular fire passage 120 such that the gas pressure on the fourth segment 122 is less. In the illustrated embodiment, the flow restrictor is a spherical plug structure that, by virtue of its at least partial blocking of gas flow, intuitively reduces the flow area of the outer annular flame path 120. In other embodiments not shown, the flow restrictor may be a flow restrictor pin or other various types, for example, the flow restrictor pin may be connected to the outer ring fire channel 120 by a threaded connection, a magnetic connection, a clamping connection, or other various types, the flow restrictor pin has an flow-through portion with a smaller flow-through area than the outer ring fire channel 120, and the flow-through portion may be understood as a flow-restricting channel penetrating the flow restrictor pin, and when the fuel gas flows from the third section 121 of the outer ring fire channel 120 to the fourth section 122 of the outer ring fire channel 120, the flow-through portion of the flow restrictor pin may restrict the flow of the fuel gas, thereby reducing the amount of fuel gas flowing into the fourth section 122. Of course, the second flow restricting structure 123 may be other various types of flow restricting structures.

The above two embodiments take the flow-limiting channel and the flow-limiting member as examples only for convenience of description, and in other embodiments not shown, the first flow-limiting structure 113 and the second flow-limiting structure 123 may be any type of flow-limiting structure, and the first flow-limiting structure 113 and the second flow-limiting structure 123 may be the same flow-limiting structure or different flow-limiting structures.

Referring to fig. 6 and 7 in combination, an auxiliary gas inlet 131 may be provided on the third section 121, a first auxiliary gas outlet 132 may be provided on the second section 112, a second auxiliary gas outlet 133 may be provided on the fourth section 122, and an auxiliary gas passage 130 may be formed between the auxiliary gas inlet 131, the first auxiliary gas outlet 132, and the second auxiliary gas outlet 133. The auxiliary gas channel 130 may have a T-shaped structure, a three-way structure, or various other three-way structures, and the fuel gas introduced into the auxiliary gas channel 130 from the auxiliary gas inlet 131 flows out of the auxiliary gas channel 130 through the first auxiliary gas outlet 132 and the second auxiliary gas outlet 133. after the fuel gas enters the connecting body 100 through the air inlet 140, the fuel gas led to the outer ring fire channel 120 is split at the auxiliary air inlet 131 on the third section 121 of the outer ring fire channel 120, and the split fuel gas enters the auxiliary air channel 130 through the auxiliary air inlet 131, further enters the second section 112 of the inner ring fire channel 110 through the first auxiliary air outlet 132, and enters the fourth section 122 of the outer ring fire channel 120 through the second auxiliary air outlet 133. The auxiliary gas passage 130 may be provided with a control valve 200, and the auxiliary gas passage 130 may be switched between an on state and an off state by the control valve 200. The control valve 200 may be a solenoid valve, a self-priming valve, or any other type of control valve 200, such as a valve, that closes the auxiliary gas channel 130 when the valve completely blocks the auxiliary gas channel 130; the valve is opened, so that the auxiliary gas channel 130 is in a conducting state when at least one gap in the auxiliary gas channel 130 can be used for the gas to pass through. The auxiliary gas passage 130 in the closed state cannot pass gas therethrough. The auxiliary gas channel 130 in the conducting state may have gas passing therethrough, but the conducting state of the auxiliary gas channel 130 does not mean that the auxiliary gas channel 130 is not restricted to gas, for example, for the valve type control valve 200, the control valve 200 is only opened half, so that only half of the cross section of the auxiliary gas channel 130 where the control valve 200 is located can pass through the gas, and the other half can form restriction to gas, and the auxiliary gas channel 130 is also in the conducting state. In other words, the on state of the auxiliary gas channel 130 does not mean that the auxiliary gas channel 130 is defined to be in the fully opened state, and any opening degree of the auxiliary gas channel 130 is within the scope of the present utility model. In another aspect, the present utility model does not limit the control valve 200 to only control the auxiliary air channel 130 to switch between the full open state and the full closed state, and in the air intake assembly provided by the present utility model, the control valve 200 can control not only the auxiliary air channel 130 to be completely closed and in the closed state, but also the opening degree of the auxiliary air channel 130 to be in the on state. Preferably, the control valve 200 controls the auxiliary gas channel 130 to switch between a fully open conductive state and a fully closed state, i.e., when the control valve 200 makes the auxiliary gas channel 130 be in the conductive state, the auxiliary gas channel 130 is in a substantially fully open state, i.e., the flow area of the fuel gas flowing in the auxiliary gas channel 130 in the conductive state is the cross-sectional area of the auxiliary gas channel 130. It should be noted that, when the auxiliary gas channel 130 is in the closed state, no fuel gas flows out from the first auxiliary gas outlet 132 and the second auxiliary gas outlet 133; when the auxiliary gas channel 130 is in a conducting state, the gas flows out from the first auxiliary gas outlet 132 and the second auxiliary gas outlet 133.

When the quick-frying with strong fire is needed, the control valve 200 can be adjusted to switch the auxiliary air channel 130 to the conducting state so as to make the air inlet assembly in the quick-frying state. On the one hand, in the stir-frying state, the gas will first pass through the first flow limiting structure 113 and then reach the second section 112 in the inner ring fire channel 110, the amount of gas on the second section 112 is small, the gas pressure is low, the gas flowing out of the first auxiliary gas outlet 132 enters the second section 112 of the inner ring fire channel 110, and this part of gas can be supplied to the second section 112 of the inner ring fire channel 110, and the final gas outlet amount of the gas at the inner ring fire gas outlet 150 is increased. On the other hand, in the quick-fried state, the gas will first pass through the auxiliary gas inlet 131 in the outer ring fire channel 120, and part of the gas will enter the auxiliary gas channel 130 through the auxiliary gas inlet 131, and since the gas at the gas inlet 140 will continuously enter the connecting body 100, it can be considered that all the positions in the connecting body 100 are full of gas, therefore, although the auxiliary gas channel 130 splits the gas entering the outer ring fire channel 120, in fact, the gas quantity of the outer ring fire channel 120 is not affected. The gas entering the outer ring fire channel 120 passes through the second flow limiting structure 123 and reaches the fourth section 122 of the outer ring fire channel 120, and the gas flowing out from the second auxiliary gas outlet 133 on the fourth section 122 supplements the gas on the outer ring fire channel 120, so that the final gas output of the gas at the outer ring fire gas outlet 160 is increased.

When the quick-frying with strong fire is not needed, the control valve 200 can be adjusted to switch the auxiliary air channel 130 to a closed state so that the air inlet assembly is in a non-quick-frying state, under the non-quick-frying state, the first flow limiting structure 113 is arranged on the inner annular fire channel 110, the second flow limiting structure 123 is arranged on the outer annular fire channel 120, the amount of fuel gas reaching the inner annular fire air outlet 150 and the outer annular fire air outlet 160 in the air inlet assembly is less, and at the moment, the inner annular fire air outlet 150 and the outer annular fire air outlet 160 work with rated power, and the daily requirements of users can still be met. When the auxiliary air channel 130 is switched to a conducting state under the action of the control valve 200, the air inlet component is in a stir-frying state, the amount of fuel gas reaching the inner ring fire air outlet 150 and the outer ring fire air outlet 160 in the air inlet component is large, at this time, the inner ring fire air outlet 150 and the outer ring fire air outlet 160 work at full load power, the amount of fuel gas outlet of the inner ring fire air outlet 150 and the outer ring fire air outlet 160 working at full load power can reach 1.1-1.3 times of the amount of fuel gas outlet working at rated power, and the air inlet component can convey the fuel gas to the inner ring air outlet chamber and the outer ring air outlet chamber, so that the inner ring fire cover 410 and the outer ring fire cover 420 both form strong fire stir-frying. That is, in the air intake assembly provided by the present utility model, since the first and second flow restricting structures 113 and 123 are provided, the inner and outer ring fire air outlets 150 and 160 have two kinds of power, i.e., rated power and full load power.

According to the air inlet assembly provided by the utility model, fuel gas is still respectively conveyed by the inner annular fire channel 110 and the outer annular fire channel 120, and the auxiliary air channel 130 is led out of the outer annular fire channel 120 and led to the second section 112 of the inner annular fire channel 110 and the fourth section 122 of the outer annular fire channel 120, and other parts of the air inlet assembly have structures similar to those of a conventional air inlet assembly, namely the overall structure is similar to that of the conventional air inlet assembly; meanwhile, in the air inlet assembly, as the first flow limiting structure 113 is arranged on the inner annular fire channel 110, the second flow limiting structure 123 is arranged on the outer annular fire channel 120, and the control valve 200 controls the auxiliary air channel 130 to be in a closed state in normal use, the amount of fuel gas on the second section 112 of the inner annular fire channel 110 and the fourth section 122 of the outer annular fire channel 120 is less, the fuel gas pressure is less, and the inner annular fire air outlet 150 and the outer annular fire air outlet 160 work at rated power; when the inner ring fire and the outer ring fire are required to be stir-fried with strong fire at the same time, the control valve 200 controls the auxiliary gas channel 130 to be in a conducting state, and the auxiliary gas channel 130 supplements fuel gas for the second section 112 of the inner ring fire channel 110 and the fourth section 122 of the outer ring fire channel 120, so that fuel gas amounts on the second section 112 and the fourth section 122 are increased, fuel gas pressures are increased, and the inner ring fire gas outlet 150 and the outer ring fire gas outlet 160 work at full load power. The efficiency of increasing the gas quantity to the firepower promotion is very high, and the inner ring fire and the outer ring fire which are realized simultaneously are subjected to strong fire stir-frying and are limited by the structures of the inner ring fire air outlet 150 and the outer ring fire air outlet 160 very little, so that the problem of insufficient strong fire stir-frying firepower caused by too low full load power of the inner ring fire air outlet 150 and/or the outer ring fire air outlet 160 can not occur. In addition, the quick-frying of strong fire of inner ring fire and outer ring fire is realized simultaneously, and the problem of uneven fire or insufficient fire still can not appear in the culinary art. The air inlet assembly is applied to a kitchen range, so that the kitchen range can meet daily requirements of users, and can realize rapid stir-frying of inner ring fire and outer ring fire at the same time. Therefore, the air inlet assembly does not need a special four-way structure air inlet valve, not only can meet the daily requirements of users, but also can realize that more fuel gas is conveyed to the external air outlet chamber when the users need, thereby meeting the requirements of inner ring fire and outer ring fire for stir-frying with strong fire at the same time, and the air inlet assembly has simple structure and low cost.

In one embodiment of the present utility model, referring to fig. 2, 3, 4, 5, 6 and 7, the auxiliary gas channel 130 may be provided with a connection port 134. The auxiliary gas passage 130 may be divided into a first connection section 135 connected to the auxiliary gas inlet 131, a second connection section 136 connected to the first auxiliary gas outlet 132, and a third connection section 137 connected to the second auxiliary gas outlet 133 by a connection port 134, the connection port 134 may be located at a junction of the first connection section 135, the second connection section 136, and the third connection section 137, one side of the connection port 134 is the first connection section 135, and the other side of the connection port 134 is the second connection section 136 and the third connection section 137. After the gas enters the outer ring fire channel 120 through the gas inlet 140, part of the gas enters the auxiliary gas channel 130 through the auxiliary gas inlet 131, the gas in the auxiliary gas channel 130 firstly enters the first connecting section 135, then enters the second connecting section 136 and the third connecting section 137 through the connecting port 134, and finally enters the second section 112 of the inner ring fire channel 110 from the first auxiliary gas outlet 132 and enters the fourth section 122 of the outer ring fire channel 120 from the second auxiliary gas outlet 133. The first connection section 135, the second connection section 136 and the third connection section 137 may have any suitable structure, and the first connection section 135, the second connection section 136 and the third connection section 137 may have the same structure or may have different structures. The first connecting section 135, the second connecting section 136 and the third connecting section 137 may be integrally formed, at this time, the connecting port 134 is formed naturally at the junction of the first connecting section 135, the second connecting section 136 and the third connecting section 137, and the first connecting section 135, the second connecting section 136 and the third connecting section 137 may be in a split structure and are fixedly connected together by threaded connection, welding or other various forms, and the connecting port 134 is formed at the junction. Plugging the connection port 134 can prevent the fuel gas in the first connection section 135 from entering the second connection section 136 and the third connection section 137. The auxiliary gas channel 130 is divided into three parts, namely a first connecting section 135, a second connecting section 136 and a third connecting section 137, at the connecting port 134, and such an auxiliary gas channel 130 is easier to produce, process and install. The second connection section 136 and the third connection section 137 may each be no higher than the first connection section 135. As shown in fig. 7, the second connection section 136 and the third connection section 137 may each form an L-like structure. The connection port 134 may be considered as a vertical pipe section portion on the first connection section 135, so that the first connection section 135 is located above the second connection section 136 and the third connection section 137, and the auxiliary gas channel 130 is integrally arranged in two layers above and below; alternatively, it may be considered that, since the first auxiliary gas outlet 132 is the highest portion of the second connecting section 136, the second auxiliary gas outlet 133 is the highest portion of the third connecting section 137, and neither the first auxiliary gas outlet 132 nor the second auxiliary gas outlet 133 is higher than the main portion of the first connecting section 135 (the portion of the first connecting section 135 flush with the inner annular fire passage 110 and the outer annular fire passage 120 in the illustrated embodiment), the first connecting section 135 is located above the second connecting section 136 and the third connecting section 137, and the auxiliary gas passage 130 is arranged in two layers as a whole. In this way, the connection main body 100 can be prevented from being transversely provided with too many pipelines, the control valve 200 for controlling the auxiliary air channel 130 to be switched between the closed state and the conducting state can also be arranged at the lower position of the connection main body 100, the space utilization rate of the air inlet assembly is higher, the structure is simpler, and the implementation is easy.

The flow area of the connection port 134 may be not greater than the flow area of any one of the first, second, and third connection sections 135, 136, 137. On the one hand, the flow area of the connection port 134 is smaller than the flow area of the first connection section 135, that is, the flow area of the connection port 134 is smaller than the flow area of the auxiliary gas inlet 131, so that the gas flow rate of the gas flow at the connection port 134 is larger than the gas flow rate of the gas flow at the auxiliary gas inlet 131, and the gas flow pressure at the connection port 134 is smaller than the gas flow pressure at the auxiliary gas inlet 131, so that the gas can enter the first connection section 135 from the outer ring fire channel 120 through the auxiliary gas inlet 131 more easily; on the other hand, the flow area of the connection port 134 is smaller than the flow area of the second connection section 136, that is, the flow area of the connection port 134 is smaller than the flow area of the first auxiliary gas outlet 132, so that the gas flow rate of the gas at the connection port 134 is larger than the gas flow rate of the gas at the first auxiliary gas outlet 132, and thus, in the process that the gas enters the second connection section 136 from the connection port 134 and reaches the first auxiliary gas outlet 132, the gas flow rate is gradually reduced, and finally, when the gas enters the second section 112 of the inner ring fire channel 110 from the first auxiliary gas outlet 132, the turbulence generated by the gas flow is less, and the whole gas flow is more stable; in still another aspect, the flow area of the connection port 134 is smaller than the flow area of the third connection section 137, that is, the flow area of the connection port 134 is smaller than the flow area of the second auxiliary gas outlet 133, so that the flow rate of the gas flow at the connection port 134 is greater than the flow rate of the gas flow at the second auxiliary gas outlet 133, and thus, the flow rate of the gas flow is gradually reduced in the process that the gas enters the third connection section 137 from the connection port 134 and reaches the second auxiliary gas outlet 133, and finally, when the gas enters the fourth section 122 of the outer fire channel 120 through the second auxiliary gas outlet 133, the turbulence generated by the gas flow is less, and the overall gas flow is more stable. The stability of the gas flow direction can be improved by proper design, for example, the flowing area of the first auxiliary gas outlet 132 and the second auxiliary gas outlet 133 can be smaller than that of the auxiliary gas inlet 131 on the basis of the above, so that the stability of the gas flow direction can be further improved, and the gas can be promoted to enter the auxiliary gas channel 130 from the auxiliary gas inlet 131 and flow out of the auxiliary gas channel 130 from the first auxiliary gas outlet 132 and the second auxiliary gas outlet 133.

The connection port 134 may be circular with a diameter not less than 3mm, the circular connection port 134 being more adapted to a conventional pipe, and the auxiliary gas channel 130 having the circular connection port 134 being more easily installed. The diameter of the connection port 134 may be not smaller than 3mm, so that the effect of influencing the flow of the fuel gas in the auxiliary gas channel 130 due to the too small diameter of the connection port 134 is avoided.

Similarly, the flow area of the first auxiliary gas outlet 132 may be no greater than the flow area of the second section 112. As shown in fig. 7, the first auxiliary gas outlet 132 may be an opening formed in a sidewall of the second section 112. Such a first auxiliary gas outlet 132 may ensure that fuel gas may enter the second section 112 of the inner annular fire passage 110 via the first auxiliary gas outlet 132, which may in turn ensure that more fuel gas may reach the inner annular fire gas outlet 150. The first subsidiary gas outlet 132 may be circular with a diameter of not less than 2.5mm, and the circular first subsidiary gas outlet 132 may be more adapted to conventional piping while such subsidiary gas channel 130 is also easier to produce and install. The diameter of the first auxiliary gas outlet 132 may be no less than 2.5mm, avoiding that too small a diameter of the first auxiliary gas outlet 132 results in fuel gas not being able to flow through the first auxiliary gas outlet 132 to the second section 112 of the inner annular flame path 110.

Similarly, the flow area of the second subsidiary gas outlet 133 may be not greater than the flow area of the fourth section 122. As shown in fig. 7, the second subsidiary gas outlet 133 may be an opening formed in the sidewall of the fourth section 122. Such a second auxiliary gas outlet 133 may ensure that fuel gas may enter the fourth section 122 of the outer annular flame path 120 via the second auxiliary gas outlet 133, which may in turn ensure that more fuel gas may reach the outer annular flame outlet 160. The second subsidiary gas outlet 133 may be circular with a diameter of not less than 2.5mm, and the circular second subsidiary gas outlet 133 may be more adapted to conventional piping while such subsidiary gas channel 130 is also more easily manufactured and installed. The diameter of the second auxiliary gas outlet 133 may be not less than 2.5mm, avoiding that too small a diameter of the second auxiliary gas outlet 133 results in fuel gas not being able to flow through the second auxiliary gas outlet 133 to the fourth section 122 of the outer annular flame path 120.

Referring to fig. 7, the control valve 200 may include a valve body 210 and an adjusting member 220, the valve body 210 may be located outside the connection body 100, the adjusting member 220 may be movably connected to the valve body 210 and movable between a first position and a second position, wherein when the adjusting member 220 is located at the first position, the adjusting member 220 is located in the auxiliary gas channel 130 and seals the connection port 134, and the auxiliary gas channel 130 is in a closed state; when the adjusting member 220 is located at the second position, a ventilation gap is formed between the adjusting member 220 and the connection port 134, and the auxiliary air channel 130 is in a conducting state. When the adjusting member 220 is located at the first position, the connecting port 134 can be plugged by the adjusting member 220, and when the adjusting member 220 is located at the second position, at least a part of plugging of the connecting port 134 by the adjusting member 220 can be opened. The control valve 200 may be in the form of a rotary valve, the adjusting member 220 may rotate relative to the valve main body 210, when the adjusting member 220 is located at different angles relative to the valve main body 210, the auxiliary air channel 130 is located in different states, and the first position and the second position may be understood as a first position when the adjusting member 220 is located at a first angle relative to the valve main body 210, and a second position when the adjusting member 220 is located at a second angle relative to the valve main body 210. The control valve 200 may be manually operated or may be electronically controlled, for an electronically controlled control valve 200, the control valve 200 typically needs to be connected to an external controller. Such a control valve 200 avoids the provision of complex structures within the connecting body 100, further simplifying the overall structure.

The adjustment member 220 may also be extendable or retractable relative to the valve body 210, see in particular fig. 7. Wherein, when the adjusting member 220 extends relative to the valve main body 210, the adjusting member 220 is located at the first position; when the regulating member 220 is retracted relative to the valve body 210, the regulating member 220 is positioned in the second position. The valve body 210 is located outside the connection body 100, and when the adjusting member 220 is extended relative to the valve body 210, the adjusting member 220 is located in the auxiliary air channel 130, and the adjusting member 220 seals the connection port 134, so that the auxiliary air channel 130 is in a closed state. When the adjusting member 220 is retracted with respect to the valve body 210, the adjusting member 220 may be entirely located outside the connecting body 100, with the auxiliary gas channel 130 being in a conductive state. Of course, when the adjusting member 220 is retracted relative to the valve main body 210, the adjusting member 220 may still be partially located in the auxiliary gas channel 130, for example, if the portion of the adjusting member 220 still located in the auxiliary gas channel 130 after being retracted still blocks the flow of the fuel gas on the auxiliary gas channel 130, the control valve 200 with such adjusting member 220 may be retracted relative to the valve main body 210 by the adjusting member 220, so as to control the size of the blocking portion of the adjusting member 220 against the fuel gas in the auxiliary gas channel 130, and thus, the opening degree of the auxiliary gas channel 130 may be controlled. The telescopic movement of the adjusting member 220 with respect to the valve main body 210 is simpler, and thus the structure of the control valve 200 is simpler, and thus the structure of the overall device of the air intake assembly can be simpler and easy to implement.

Referring again to fig. 7, the first position may be at the connection port 134. The adjusting piece 220 located at the first position seals the connection port 134, so that the first position located at the connection port 134 can make the effect of the adjusting piece 220 sealing the connection port 134 better, that is, the auxiliary gas channel 130 in the closed state is more airtight, and the gas is prevented from flowing in the auxiliary gas channel 130 in the closed state. And the first position is located at the connection port 134, the response of the auxiliary air channel 130 switching from the closed state to the on state is quicker when the adjusting member 220 moves from the first position to the second position.

The line connecting the first location and the second location may be perpendicular to the horizontal plane. The adjusting member 220 is extended and contracted with respect to the valve main body 210 in a direction perpendicular to the horizontal plane, and the control valve 200 is in a vertical position. For the control valve 200 having a conventional structure, the vertically arranged control valve 200 can save space occupied by the whole device in the horizontal direction, so that the whole device occupies smaller lateral space.

In an embodiment of the present utility model, referring to fig. 6, the first flow limiting structure 113 may be disposed on the end of the inner ring fire channel 110 near the air inlet 140, the first flow limiting structure 113 may be a flow limiting channel, and the flow area of the flow limiting channel may be not greater than the flow area of the inner ring fire channel 110. The restricted flow passage may be a section of reduced flow area at any location on the inner annular flame passage 110. For example, for a first segment 111, a second segment 112, and a flow restricting channel in the form of a circular tube, the tube diameter of the flow restricting channel may be smaller than the tube diameter of the first segment 111 and smaller than the tube diameter of the second segment 112, the first segment 111, the flow restricting channel, and the second segment 112 being connected in sequence to form the inner annular fire channel 110. Of course, the flow restricting passage may be of various other forms. In the illustrated embodiment, the restricted flow passage is located on the inner annular flame passage 110 closest to the air inlet 140, and it is still possible to consider the restricted flow passage dividing the inner annular flame passage 110 into the first section 111 and the second section 112, except that the first section 111 is considered to be zero in length. The inner ring fire channel 110 is divided into the first section 111 and the second section 112 by taking the form of the flow limiting channel as the first flow limiting structure 113, other components are not required to be installed in the inner ring fire channel 110, the consistency of the internal structure of the whole device is good, and the situation that the flow limiting structure falls off from the inner ring fire channel 110 can not occur in the use process.

In one embodiment of the utility model, the second flow restricting structure 123 may be a flow restrictor disposed within the outer annular flame path 120 that may form a partial barrier to fluid within the outer annular flame path 120. In the illustrated embodiment, the flow restrictor is a spherical plug structure that, by virtue of its at least partial blocking of gas flow, intuitively reduces the flow area of the outer annular flame path 120. In other embodiments not shown, the flow restrictor may be a flow restrictor pin or other various types, for example, the flow restrictor pin may be connected to the outer annular fire channel 120 by a threaded connection, a magnetic connection, a clamping connection, or other various types, the flow restrictor pin has an flow passage area smaller than that of the outer annular fire channel 120, and when the fuel gas flows from the third section 121 of the outer annular fire channel 120 to the fourth section 122 of the outer annular fire channel 120, the flow passage of the fuel gas is restricted by the flow passage of the flow restrictor pin, so as to reduce the amount of fuel gas flowing into the fourth section 122. The second flow restricting structure 123 in the form of a flow restricting member is easily removable and replaceable or repairable, and may be replaced with flow restricting members of different sizes and configurations depending on the needs.

In an embodiment of the present utility model, referring to fig. 5 and 6, an inner ring fire nozzle member 151 may be connected to an end of the second section 112 remote from the first flow restricting structure 113, an inner ring fire nozzle port 1511 may be provided to an end of the inner ring fire nozzle member 151 remote from the connection body 100, and an overcurrent area of the inner ring fire nozzle port 1511 may be not greater than that of the second section 112. The power of the inner ring fire air outlet 150 is the power of the inner ring fire nozzle 1511, and the inner ring fire air outlet 150 under rated power corresponds to the inner ring fire nozzle 1511 under rated power; the inner ring fire air outlet 150 at full power corresponds to the inner ring fire nozzle 1511 at full power. The inner ring fire nozzle 1511 has smaller flow area, the flow velocity of the fuel gas is increased after the fuel gas passes through the inner ring fire nozzle 1511, the fluid pressure is reduced, the fuel gas enters the inner ring fire injection pipe 430 to form negative pressure so as to facilitate the mixing of external air, and then the generated fuel gas-air mixed gas is conveyed to an external inner ring air outlet chamber, so that the fuel gas can be combusted and flame can be generated at the inner ring fire cover 410 connected with the external inner ring air outlet chamber.

The two powers of the inner ring fire air outlet 150 may be achieved by the special construction of the inner ring fire nozzle opening 1511. For example, the inner ring fire nozzle opening 1511 may have a larger aperture than the normal nozzle opening. In the non-stir-frying state, since the first flow-limiting structure 113 is disposed on the inner ring fire channel 110, the gas outlet amount at the inner ring fire outlet 150 is lower than the gas outlet amount at the inner ring fire outlet 150 without the first flow-limiting structure 113, so that the aperture of the inner ring fire nozzle 1511 can be larger than that of the normal nozzle in order to meet the normal requirement of the user under the non-stir-frying condition. The larger aperture nozzle has a greater outflow capability, so that, in one aspect, even if the inner ring fire channel 110 is provided with the first flow limiting structure 113, the amount of gas reaching the inner ring fire gas outlet 150 is smaller, the inner ring fire nozzle 1511 can still flow inwards with the rated gas outlet amount due to the greater outflow capability; in another aspect, in the quick-frying state, since the fuel gas is continuously supplied to the second section 112 of the inner ring fire channel 110 through the first auxiliary gas outlet 132, the amount of fuel gas reaching the inner ring fire gas outlet 150 is larger, the inner ring fire nozzle 1511 works with full power, and the amount of fuel gas at full power is larger for the inner ring fire nozzle 1511 with larger aperture, so that the amount of fuel gas delivered to the inner ring gas outlet chamber through the inner ring fire gas outlet 150 is larger, and quick-frying with strong fire of inner ring fire with larger fire is realized.

Referring to fig. 5 and 6, an outer ring fire nozzle member 161 may be connected to an end of the fourth section 122 remote from the second flow restricting structure 123, an outer ring fire nozzle opening 1611 may be provided to an end of the outer ring fire nozzle member 161 close to the connection body 100, and an area of the outer ring fire nozzle opening 1611 may be not greater than an area of the fourth section 122. The outer annular fire nozzle 1611 has a smaller flow area, the flow velocity of the fuel gas is increased after passing through the outer annular fire nozzle 1611, the fluid pressure is reduced, and negative pressure is formed so as to facilitate mixing of external air, thereby generating fuel gas-air mixed gas. The end of the outer ring fire nozzle member 161 remote from the connection body 100 is generally connected to the outer ring fire injection pipe 440, and in the outer ring fire injection pipe 440, the gas flowing out from the outer ring fire nozzle opening 1611 enters the outer ring fire injection pipe 440 and is mixed with air, so that the gas-air mixed gas is generated and is delivered to the outer ring gas outlet chamber, and thus the gas can be combusted and flame can be generated at the outer ring fire cover 420 connected with the outer ring gas outlet chamber. The outer annular fire nozzle member 161 and the outer annular fire nozzle opening 1611 are similar to the inner annular fire nozzle member 151 and the inner annular fire nozzle opening 1511, and the two kinds of power of the outer annular fire air outlet 160 may be realized by a special structure of the outer annular fire nozzle opening 1611 or other various manners, which will not be described herein. The difference is that, since the amount of the fuel gas in the outer ring fire channel 120 is generally greater than the amount of the fuel gas in the inner ring fire channel 110, in order to ensure the quality of flame combustion in the outer ring fire cover 420, the amount of the air to be mixed with the fuel gas is greater, so the outer ring fire nozzle 1611 is disposed on the outer ring fire nozzle 161 near the end of the connection body 100, and the mixed flow hole 1612 is generally disposed on the outer ring fire nozzle 161 near the end of the connection body 100, the fuel gas flowing out of the outer ring fire outlet 160 firstly enters the outer ring fire nozzle 161 through the outer ring fire nozzle 1611, and completes the first fuel gas-air mixing through the mixed flow hole 1612, and then the mixed gas enters the outer ring fire injection pipe 440 to complete the second fuel gas-air mixing, so as to ensure that the fuel gas in the outer ring fire channel 120 reaches the outer ring fire cover 420 and participates in combustion after being fully mixed with the air.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "over … …," "over … …," "on the upper surface of … …," "over," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (16)

1. An air inlet assembly is characterized by comprising a connecting main body, wherein an air inlet, an inner annular fire air outlet and an outer annular fire air outlet are arranged on the connecting main body, an inner annular fire channel is formed between the air inlet and the inner annular fire air outlet, and an outer annular fire channel is formed between the air inlet and the outer annular fire air outlet;

The inner annular fire channel is provided with a first flow limiting structure, the inner annular fire channel is divided into a first section connected to the air inlet and a second section connected to the inner annular fire air outlet by the first flow limiting structure, the outer annular fire channel is provided with a second flow limiting structure, and the outer annular fire channel is divided into a third section connected to the air inlet and a fourth section connected to the outer annular fire air outlet by the second flow limiting structure;

The auxiliary gas inlet is arranged on the third section, the first auxiliary gas outlet is arranged on the second section, the second auxiliary gas outlet is arranged on the fourth section, an auxiliary gas channel is formed between the auxiliary gas inlet, the first auxiliary gas outlet and the second auxiliary gas outlet, a control valve is arranged on the auxiliary gas channel, and the auxiliary gas channel is switched between a conducting state and a closing state through the control valve.

2. The intake assembly according to claim 1, wherein a connection port is provided on the auxiliary gas passage, and the auxiliary gas passage is divided into a first connection section connected to the auxiliary gas inlet, a second connection section connected to the first auxiliary gas outlet, and a third connection section connected to the second auxiliary gas outlet by the connection port.

3. The air intake assembly of claim 2, wherein neither the second connection section nor the third connection section is higher than the first connection section.

4. The air intake assembly of claim 2, wherein the control valve includes a valve body external to the connecting body and an adjustment member movably coupled to the valve body and movable between a first position and a second position, wherein,

When the regulating piece is positioned at the first position, the regulating piece is positioned in the auxiliary air channel and seals the connecting port, and the auxiliary air channel is in a closed state;

When the adjusting piece is located at the second position, a ventilation gap is formed between the adjusting piece and the connecting port, and the auxiliary air channel is in a conducting state.

5. The air intake assembly of claim 4, wherein the adjustment member is extendable or retractable relative to the valve body, wherein,

When the regulating piece extends out relative to the valve main body, the regulating piece is positioned at the first position;

The adjustment member is in the second position when the adjustment member is retracted relative to the valve body.

6. The air intake assembly of claim 5, wherein the first location is at the connection port.

7. The air intake assembly of claim 5, wherein a line connecting the first location and the second location is perpendicular to a horizontal plane.

8. The air intake assembly of claim 2, wherein the flow area of the connection port is no greater than the flow area of any of the first, second, and third connection segments.

9. The air intake assembly of claim 8, wherein the connection port is circular with a diameter of no less than 3 mm.

10. The air intake assembly of claim 1, wherein the first flow restricting structure is disposed on the inner annular flame path at an end thereof adjacent to the air inlet, the first flow restricting structure being a flow restricting path having a flow area no greater than a flow area of the inner annular flame path.

11. The air intake assembly of claim 1, wherein the second flow restricting structure is a flow restrictor disposed within the outer annular flame path, the flow restrictor forming a partial barrier to fluid within the outer annular flame path.

12. The air intake assembly of claim 1, wherein the excess flow area of the first auxiliary air outlet is no greater than the excess flow area of the second section;

And/or the flow area of the second auxiliary gas outlet is not larger than the flow area of the fourth section.

13. The air intake assembly of claim 12, wherein the first auxiliary air outlet is circular with a diameter of not less than 2.5 mm;

And/or the second auxiliary gas outlet is circular with the diameter not smaller than 2.5 mm.

14. The air intake assembly of claim 1, wherein an end of the second section remote from the first flow restricting structure is connected to an inner annular fire nozzle member, an end of the inner annular fire nozzle member remote from the connecting body is provided with an inner annular fire nozzle opening, and an area of the inner annular fire nozzle opening is not greater than an area of the second section.

15. The air intake assembly of claim 1, wherein an end of the fourth section remote from the second flow restricting structure is connected to an outer annular fire nozzle member, an end of the outer annular fire nozzle member adjacent to the connecting body is provided with an outer annular fire nozzle opening, and the flow area of the outer annular fire nozzle opening is not greater than the flow area of the fourth section.

16. A stove characterized by comprising a burner and an air inlet assembly according to any one of claims 1-15, wherein the burner comprises an inner ring air outlet chamber, an outer ring air outlet chamber, an inner ring fire injection pipe and an outer ring fire injection pipe, wherein the inner ring fire air outlet is communicated to the inner ring air outlet chamber through the inner ring fire injection pipe, and the outer ring fire air outlet is communicated to the outer ring air outlet chamber through the outer ring fire injection pipe.