Gas stove

Abstract

The utility model discloses a gas stove, and relates to the technical field of commercial gas stoves. The gas stove comprises a stove body, a first heat exchange unit, a second heat exchange unit and a mixing cavity, the stove body is provided with a combustion cavity and an exhaust hole which are communicated with each other, and the exhaust hole is used for exhausting waste gas in the combustion cavity; the first heat exchange unit comprises a first heat exchange cavity and a second heat exchange cavity, and the second heat exchange unit comprises a third heat exchange cavity and a fourth heat exchange cavity; the exhaust hole is sequentially communicated with the first heat exchange cavity and the third heat exchange cavity, the input end of the mixing cavity is used for being communicated with a fuel gas source and an air source, the output end of the mixing cavity is sequentially communicated with the second heat exchange cavity and the combustion cavity, and the fourth heat exchange cavity is used for containing water. According to the gas stove, the recycling rate of heat in waste gas can be increased, and the energy-saving effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of commercial gas stoves, and particularly to a gas stove. Background Art

[0002] Most commercial cookers use gas as fuel, and the exhaust gas discharged during the use of the vast majority of commercial cookers has a relatively high temperature, which is measured on-site to be about 300°C - 650°C.

[0003] Currently, although some commercial cookers have the function of recovering the heat in the exhaust gas, the recovery rate of the heat in the exhaust gas is low, and the energy-saving effect is not obvious. Utility Model Content

[0004] This application provides a gas stove to improve the utilization rate of the heat in the combustion exhaust gas and enhance the energy-saving effect.

[0005] This application provides a gas stove, which includes a stove body, a first heat exchange unit, a second heat exchange unit, and a mixing chamber;

[0006] The stove body has a combustion chamber and an exhaust hole that are connected, and the exhaust hole is used to discharge the exhaust gas in the combustion chamber;

[0007] The first heat exchange unit includes a first heat exchange chamber and a second heat exchange chamber, and the second heat exchange unit includes a third heat exchange chamber and a fourth heat exchange chamber;

[0008] The exhaust hole is sequentially connected to the first heat exchange chamber and the third heat exchange chamber. The input end of the mixing chamber is used to be respectively connected to a gas source and an air source, the output end of the mixing chamber is sequentially connected to the second heat exchange chamber and the combustion chamber, and the fourth heat exchange chamber is used to hold water.

[0009] Advantages of this application: For the gas stove provided by this application, first, the exhaust gas is subjected to heat exchange with the mixed gas, so that the mixed gas can fully absorb the heat energy in the exhaust gas. Among them, the temperature of the mixed gas can be heated to about 350°C to 450°C. Subsequently, the exhaust gas can enter the second heat exchange unit to perform heat exchange with water, and the water further absorbs the residual heat in the exhaust gas. Compared with the related art, this application can fully recover and utilize the residual heat in the exhaust gas, improve the utilization rate of the residual heat in the exhaust gas, and enhance the energy-saving effect.

[0010] In some possible implementation manners, the stove body further has a collecting chamber, the collecting chamber is disposed around the circumference of the combustion chamber and is connected to the exhaust hole;

[0011] The first heat exchange unit includes a first housing and first heat exchange tubes. The first heat exchange cavity is formed in the first housing. The first heat exchange cavity communicates with the collecting cavity. The second heat exchange cavity is formed in the first heat exchange tubes. The first heat exchange tubes are arranged in the first housing.

[0012] In some possible embodiments, the first heat exchange tubes have a plurality of first structural segments, and the first structural segments include at least one of a U-shaped structural segment, an S-shaped structural segment, an M-shaped structural segment, and a Z-shaped structural segment.

[0013] When the first heat exchange tubes have a plurality of the first structural segments, the plurality of first structural segments are connected end to end in sequence.

[0014] In some possible embodiments, the first heat exchange unit includes a plurality of first heat conducting fins, and the plurality of first heat conducting fins are arranged at intervals in a first direction in sequence.

[0015] The first heat exchange tubes pass through the plurality of first heat conducting fins and are connected to the plurality of first heat conducting fins.

[0016] In some possible embodiments, the first heat exchange cavity is formed in the stove body and is disposed around the circumference of the combustion cavity.

[0017] The first heat exchange unit includes second heat exchange tubes. The second heat exchange cavity is formed in the second heat exchange tubes. The second heat exchange tubes are arranged in the first heat exchange cavity.

[0018] In some possible embodiments, the second heat exchange tubes have a plurality of second structural segments, and the second structural segments include at least one of a U-shaped structural segment, an S-shaped structural segment, an M-shaped structural segment, and a Z-shaped structural segment.

[0019] When the second heat exchange tubes have a plurality of the second structural segments, the plurality of second structural segments are connected end to end in sequence.

[0020] In some possible embodiments, the first heat exchange unit includes a plurality of second heat conducting fins, and the plurality of second heat conducting fins are arranged at intervals in a second direction in sequence.

[0021] The second heat exchange tubes pass through the plurality of second heat conducting fins and are connected to the plurality of second heat conducting fins.

[0022] In some possible embodiments, the second heat exchange tubes are distributed from the end close to the mixing cavity to the end close to the combustion cavity, and are arranged from bottom to top along the gravity direction.

[0023] In some possible embodiments, the second heat exchange tubes are distributed around the combustion cavity and are spirally arranged along the gravity direction.

[0024] In some possible embodiments, the second heat exchange unit includes a second housing and a pot body. The third heat exchange cavity is formed in the second housing, the fourth heat exchange cavity is formed in the pot body, and the pot body is embedded in the second housing.

[0025] In some possible embodiments, the gas stove further includes an acid-base neutralizer, which is connected to the third heat exchange cavity and is located at the bottom in the direction of gravity of the third heat exchange cavity;

[0026] The acid-base neutralizer is used to neutralize the acid-base of the condensed water in the third heat exchange cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 Shows a schematic structural diagram of a gas stove in some embodiments;

[0029] Figure 2 Shows a schematic structural diagram of a gas stove in some other embodiments;

[0030] Figure 3 Shows a schematic structural diagram of a gas stove in some further embodiments;

[0031] Figure 4 Shows a partial top view structural diagram of a gas stove in some embodiments.

[0032] MAIN ELEMENT SYMBOL DESCRIPTION:

[0033] 1000 - Gas stove;

[0034] 100 - Stove body; 101 - Combustion cavity; 102 - Exhaust hole; 103 - Output port; 104 - Collection cavity; 110 - Outer shell; 111 - Opening structure; 120 - Inner furnace wall plate; 130 - Burner head;

[0035] 200 - First heat exchange unit; 201 - First heat exchange cavity; 202 - Second heat exchange cavity; 210 - First housing; 220 - First heat exchange tube; 221 - First structural section; 230 - First heat conducting fin; 240 - Second heat exchange tube; 241 - Second structural section; 250 - Second heat conducting fin;

[0036] 300 - The second heat exchange unit; 301 - The third heat exchange chamber; 302 - The fourth heat exchange chamber; 310 - The second housing; 320 - The pot body;

[0037] 410 - The gas pipeline; 401 - The mixing chamber;

[0038] 510 - The igniter; 520 - The acid-base neutralizer;

[0039] 610 - The first gas path; 611 - The main gas path; 612 - The first branch gas path; 613 - The second branch gas path; 614 - The first control valve; 615 - The second control valve; 616 - The pressure stabilizing valve; 617 - The check valve; 618 - The gas valve; 620 - The second gas path; 621 - The blower;

[0040] 2000 - The gas source;

[0041] M - The first direction; N - The second direction. Detailed implementation manners

[0042] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the drawings below are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0045] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0047] Embodiment 1

[0048] As Figure 1 shown, in the embodiment, a gas stove 1000 is provided, where the gas stove 1000 can be a commercial gas stove.

[0049] In some other embodiments, the gas stove 1000 can also be a household gas stove or the like.

[0050] The gas stove 1000 may include a stove body 100, a first heat exchange unit 200, a second heat exchange unit 300, and a mixing chamber 401.

[0051] Among them, the stove body 100 has a combustion chamber 101 and an exhaust hole 102 that are connected and communicated, and the exhaust hole 102 can be used to discharge the waste gas in the combustion chamber 101. The first heat exchange unit 200 includes a first heat exchange chamber 201 and a second heat exchange chamber 202 that are isolated from each other. The second heat exchange unit 300 includes a third heat exchange chamber 301 and a fourth heat exchange chamber 302 that are isolated from each other.

[0052] The exhaust hole 102 can be sequentially communicated with the first heat exchange chamber 201 and the third heat exchange chamber 301. The input end of the mixing chamber 401 can be respectively communicated with a gas source 2000 and an air source, and the output end of the mixing chamber 401 can be sequentially communicated with the second heat exchange chamber 202 and the combustion chamber 101. The fourth heat exchange chamber 302 can be used to hold water. Among them, the air source can be the external environment.

[0053] During use, the cooking pot can be placed on the stove body 100 and above the combustion chamber 101. The gas source 2000 can supply gas, and the air source can supply air. The gas and air are mixed after entering the mixing chamber 401 to generate a mixed gas. The mixed gas enters the combustion chamber 101 through the second heat exchange chamber 202 for combustion, so as to provide heat energy for the cooking pot for cooking. The waste gas generated during the combustion process in the combustion chamber 101 can be output through the exhaust hole 102 and sequentially transmitted to the first heat exchange chamber 201 and the third heat exchange chamber 301. When the waste gas passes through the first heat exchange chamber 201, it can exchange heat with the mixed gas in the second heat exchange chamber 202 to increase the temperature of the mixed gas. When the waste gas passes through the third heat exchange chamber 301, it can exchange heat with the water in the fourth heat exchange chamber 302 to heat up the water in the fourth heat exchange chamber 302.

[0054] Among them, the temperature of the water can only reach 100 °C at most. When the water reaches the boiling point, the heat it absorbs will cause the water to evaporate and form water vapor, and the water temperature will not continue to rise. Therefore, the absorption and utilization of heat by water are limited. The temperature of the mixed gas can continue to rise during the heat exchange process and is not limited by an upper limit, and it can fully absorb the heat in the waste gas. In the related art, first making the waste gas exchange heat with water and then making the waste gas exchange heat with the mixed gas will cause waste of the heat in the waste gas, reduce the utilization rate of the waste heat in the waste gas, and the energy-saving effect is not obvious.

[0055] In the embodiments of the present application, first making the waste gas exchange heat with the mixed gas can enable the mixed gas to fully absorb the heat energy in the waste gas. Among them, the temperature of the mixed gas can be heated to about 350 °C to 450 °C. Subsequently, the waste gas can enter the second heat exchange unit 300 to exchange heat with water, and the water further absorbs the waste heat in the waste gas to achieve cascaded utilization of the waste heat. Compared with the related art, the present application can fully recover and utilize the waste heat in the waste gas, improve the utilization rate of the waste heat in the waste gas, and enhance the energy-saving effect.

[0056] Among them, the mixed gas exchanges heat with the waste gas, which can realize preheating of the mixed gas. After the preheated mixed gas enters the combustion chamber 101, the absorption of the heat generated during the combustion process of the mixed gas can be reduced, that is, not too much heat is required to heat the mixed gas to the combustion temperature, so that the heat generated during the combustion process can be transferred to the cooking pot as much as possible to improve the cooking efficiency. Thus, the waste of heat during the combustion process can also be reduced, and the energy-saving effect can be further enhanced.

[0057] Embodiment 2

[0058] As Figure 1 shown, in the embodiment, a gas stove 1000 is provided. On the basis of Embodiment 1, further:

[0059] In some embodiments, the stove body 100 may include a housing 110 and an inner furnace wall plate 120. Among them, the housing 110 may be cylindrical, and one end is configured as an open structure 111. The inner furnace wall plate 120 is generally hemispherical. The inner furnace wall plate 120 may be disposed inside the housing 110, and the inner furnace wall plate 120 is connected to the edge of the housing 110 near the open structure 111. Accordingly, the housing 110 and the inner furnace wall plate 120 cooperate to enclose a closed cavity, that is, the collection cavity 104. The combustion cavity 101 may be formed on the side of the inner furnace wall plate 120 away from the housing 110. The cooking pot body may be placed at one end of the housing 110 near the open structure 111, and the housing 110 may provide a supporting function for it.

[0060] In other embodiments, the housing 110 may also be configured as a quadrangular prism, a pentagonal prism or other shapes. The inner furnace wall plate 120 may also be configured as an inverted quadrangular pyramid, a cone or a pentagonal pyramid and other shapes.

[0061] In some embodiments, the exhaust hole 102 may be opened on the inner furnace wall plate 120. One end of the exhaust hole 102 may communicate with the combustion cavity 101, and the other end of the exhaust hole 102 communicates with the collection cavity 104. The waste gas generated during the combustion process may enter the collection cavity 104 from the combustion cavity 101 through the exhaust hole 102. In some embodiments, a plurality of exhaust holes 102 may be opened on the inner furnace wall plate 120, and the plurality of exhaust holes 102 may be evenly or unevenly distributed. In addition, an output port 103 communicating with the collection cavity 104 is also opened on the housing 110, which can be used to output the waste gas in the collection cavity 104. In some embodiments, the output port 103 may be disposed near the bottom of the housing 110 in the gravity direction. Accordingly, the waste gas may descend in the collection cavity 104.

[0062] As Figure 1 shown, the stove body 100 further includes a burner 130, which may be fixedly installed on the side of the inner furnace wall plate 120 facing the combustion cavity 101. An igniter 510 is also provided on the burner 130, and the igniter 510 may be connected to the gas source 2000.

[0063] In the embodiment, the first heat exchange unit 200 may select a heat exchanger structure such as a plate heat exchanger, a cast iron heat exchanger, a cylindrical heat exchanger, etc., and no specific limitation is made here.

[0064] In some embodiments, the first heat exchange unit 200 may include a first housing 210 and a first heat exchange tube 220. The first housing 210 may be a closed structure, and a first heat exchange chamber 201 may be formed in the first housing 210. A second heat exchange chamber 202 may be formed in the first heat exchange tube 220. The first heat exchange tube 220 may be disposed through the first housing 210, so that heat exchange can be achieved between the exhaust gas in the first heat exchange chamber 201 and the mixed gas in the second heat exchange chamber 202. Wherein, the first heat exchange tube 220 may be made of a metal with high thermal conductivity such as copper or aluminum to improve the heat exchange efficiency between the exhaust gas and the mixed gas.

[0065] In an embodiment, one end of the first housing 210 may be communicated with the output port 103 through a structure such as a transfer tube to achieve communication between the first heat exchange chamber 201 and the collection chamber 104. The other end of the first housing 210 may also be communicated with the third heat exchange chamber 301 in the second heat exchange unit 300 through a structure such as a transfer tube. Wherein, the end of the first housing 210 for communicating with the collection chamber 104 and the end for communicating with the third heat exchange chamber 301 may be respectively disposed at two ends of the first housing 210 in the first direction M, and may also be respectively disposed at two ends of the first housing 210 in the second direction N. Thus, the moving path of the exhaust gas in the first housing 210 can be extended, the heat exchange time between the exhaust gas and the mixed gas in the second heat exchange chamber 202 can be increased, and it can be ensured that the mixed gas can fully absorb the heat in the exhaust gas. In some embodiments, the first direction M may be parallel to the gravity direction. The second direction N may be parallel to the horizontal direction.

[0066] One end of the first heat exchange tube 220 may be communicated with the mixing chamber 401, the other end of the first heat exchange tube 220 may be sequentially disposed through the outer shell 110 and the inner furnace wall plate 120 and extend to the combustion chamber 101, and the end of the first heat exchange tube 220 away from the mixing chamber 401 may extend into the burner head 130 and be communicated with the burner head 130. Correspondingly, the second heat exchange chamber 202 may be communicated with the combustion chamber 101 through the burner head 130.

[0067] During use, the igniter 510 may be used to provide an ignition function. The first heat exchange tube 220 may spray the mixed gas towards the burner head 130. Under the ignition action of the igniter 510, the mixed gas can be combusted, and then a flame can be formed on the side of the burner head 130 facing the opening structure 111 to heat the cooking pot body.

[0068] In addition, the first heat exchange tube 220 may include several first structural segments 221, such as one, three, four, or five. Among them, the first structural segment 221 may include a U-shaped structural segment. When the first heat exchange tube 220 includes multiple first structural segments 221, the multiple first structural segments 221 may be connected end to end in sequence. Thus, the laying length of the first heat exchange tube 220 in the first heat exchange chamber 201 can be increased, and the contact area between the first heat exchange tube 220 and the waste gas in the first heat exchange chamber 201 can be increased. Furthermore, the heat exchange effect between the mixed gas and the waste gas can be improved, ensuring that the mixed gas can absorb the heat in the waste gas more fully.

[0069] In some other embodiments, the first structural segment 221 may further include one or more of structures such as an S-shaped structural segment, a Z-shaped structural segment, and an M-shaped structural segment. Of course, when the first heat exchange tube 220 includes multiple first structural segments 221, the multiple first structural segments 221 may respectively select structural segments of different shapes, making the overall shape of the first heat exchange tube 220 irregular.

[0070] In some embodiments, the first heat exchange unit 200 further includes a first heat conducting fin 230. The first heat conducting fin 230 is disposed in the first housing 210, and the first heat conducting fin 230 is connected to the first heat exchange tube 220. Thus, the contact area with the waste gas can be increased, that is, the area for heat exchange with the waste gas can be increased, further improving the heat exchange efficiency between the waste gas and the mixed gas. In the embodiment, the first heat conducting fin 230 may be made of a metal with high thermal conductivity such as copper or aluminum to accelerate the heat transfer efficiency.

[0071] In the embodiment, the first heat exchange unit 200 may include multiple first heat conducting fins 230, and the multiple first heat conducting fins 230 may be sequentially arranged at intervals along the first direction M.

[0072] The first heat exchange tube 220 may pass through the multiple first heat conducting fins 230 in sequence and be fixedly connected to the multiple first heat conducting fins 230. It can be understood that the first heat exchange tube 220 may pass through the multiple first heat conducting fins 230 multiple times to increase the contact area between the first heat exchange tube 220 and the first heat conducting fins 230, thereby further improving the heat exchange efficiency between the waste gas and the mixed gas.

[0073] As Figure 1 shown, the gas stove 1000 further includes a first gas path 610, and the first gas path 610 can be used to transport gas. It can be understood that the first gas path 610 may be connected by structures such as a transmission pipe.

[0074] In some embodiments, the first gas path 610 may include a main gas path 611, a first branch gas path 612, and a second branch gas path 613. One end of the main gas path 611 may be in communication with the gas source 2000. The other end of the main gas path 611 is respectively in communication with the first branch gas path 612 and the second branch gas path 613. One end of the first branch gas path 612 away from the main gas path 611 may be in communication with the igniter 510 to provide gas for ignition. One end of the second branch gas path 613 away from the main gas path 611 may be in communication with the input end of the mixing chamber 401.

[0075] In some embodiments, a pressure stabilizing valve 616 may be provided on the main gas path 611, which can be used to adjust the gas flow rate in the main gas path 611. A first control valve 614 may be provided on the first branch gas path 612, which can be used to control the on / off of the first branch gas path 612. Among them, the first control valve 614 may be a solenoid valve.

[0076] In some other embodiments, the first control valve 614 may also be a manual valve or other structures.

[0077] As Figure 1 shown, a second control valve 615, a check valve 617, and a gas valve 618 are sequentially provided on the second branch gas path 613, and the second control valve 615 may be arranged in a section close to the main gas path 611. Among them, the second control valve 615 can be used to control the on / off of the second branch gas path 613. In some embodiments, the second control valve 615 may be selected as a solenoid valve.

[0078] In some other embodiments, the second control valve 615 may also be selected as a manual valve or other structures.

[0079] In the embodiment, the check valve 617 can be used to prevent gas from flowing back. The gas valve 618 may be selected as a manual valve, which can be manually operated by the user. In addition, a sensing component such as an angle sensor (not shown in the figure) may be provided at the position of the gas valve 618, and the sensing component is electrically connected to the first control valve 614, the second control valve 615, and the pressure stabilizing valve 616 respectively. During use, the user can rotate the gas valve 618 to control the switch and flame size of the gas stove 1000, and the sensing component can control the on / off of the first control valve 614 and the second control valve 615, as well as adjust the opening degree of the pressure stabilizing valve 616 by detecting the rotation angle of the gas valve 618.

[0080] The gas stove 1000 further includes a second gas path 620 which can be used to transmit air. The second gas path 620 can also be formed by connecting structures such as transmission pipes. One end of the second gas path 620 can communicate with an air source, where the air source can be the external environment. The other end of the second gas path 620 can communicate with the mixing chamber 401. In some embodiments, a blower 621 can be connected to the end of the second gas path 620 for connecting to the air source, and the air can be blown into the second gas path 620 to drive the air to flow in the second gas path 620. In the embodiments, the blower 621 can also be electrically connected to the sensing member arranged at the position of the gas valve 618, and when the sensing member detects that the gas valve 618 is opened, the blower 621 can be controlled to be opened.

[0081] In some embodiments, the mixing chamber 401 can be formed in the gas transmission pipe 410. The input end of the gas transmission pipe 410 is respectively communicated with one end of the second branch gas path 613 far from the main gas path 611 and one end of the second gas path 620 far from the blower 621. The output end of the gas transmission pipe 410 can be communicated with one end of the second heat exchange pipe 240 far from the burner head 130.

[0082] In other embodiments, the mixing chamber 401 can also be formed in a tank or a box body, and can be communicated with other structures through structures such as transmission pipes.

[0083] As Figure 1 shown, in some embodiments, the second heat exchange unit 300 can include a second housing 310 and a pot body 320. Among them, the third heat exchange chamber 301 can be formed in the second housing 310. One end of the second housing 310 can be communicated with the first housing 210 through a transmission pipe, and the other end of the second housing 310 can also be communicated with the external environment through a transmission pipe.

[0084] The fourth heat exchange chamber 302 can be formed in the pot body 320. The pot body 320 can be embedded in the second housing 310, and a closed structure can be formed inside the second housing 310. In addition, the opening of the pot body 320 can be exposed relative to the second housing 310. In the embodiments, the two ends of the second housing 310 communicating with the first heat exchange unit 200 and communicating with the external environment can be arranged on the opposite sides of the pot body 320.

[0085] During use, the water in the pot body 320 can exchange heat with the waste gas in the second housing 310 to obtain hot water for the user to use.

[0086] In other embodiments, the fourth heat exchange chamber 302 can also be formed in a water tank, and the water tank can be embedded in the second housing 310 so that the water in the water tank can exchange heat with the waste gas in the second housing 310.

[0087] In some embodiments, the gas stove 1000 further includes an acid-base neutralizer 520. The acid-base neutralizer 520 can be installed on the second housing 310 and communicate with the third heat exchange chamber 301. Additionally, the acid-base neutralizer 520 can be located at the bottom of the third heat exchange chamber 301 in the direction of gravity. The acid-base neutralizer 520 can neutralize the condensate generated by the exhaust gas entering the second housing 310 to purify pollutants such as sulfides in the condensate and avoid polluting the environment. The treated exhaust gas can be directly discharged into the atmosphere.

[0088] Embodiment III

[0089] As Figure 2 shown, in the embodiment, a gas stove 1000 is provided. Based on Embodiment II, the differences include:

[0090] As Figure 2 shown, the first heat exchange chamber 201 can be formed between the inner furnace wall plate 120 and the outer shell 110. Correspondingly, the exhaust gas output from the exhaust hole 102 can directly enter the first heat exchange chamber 201.

[0091] The first heat exchange unit 200 includes a second heat exchange tube 240. The second heat exchange tube 240 can be arranged in the first heat exchange chamber 201. One end of the second heat exchange tube 240 can penetrate through the outer shell 110 and extend outside the outer shell 110 to communicate with the output end of the gas supply pipe 410. The other end of the second heat exchange tube 240 can penetrate through the inner furnace wall plate 120 and extend to communicate with the burner head 130. The mixed gas in the second heat exchange tube 240 can exchange heat with the exhaust gas in the first heat exchange chamber 201 through the second heat exchange tube 240. In some embodiments, the second heat exchange tube 240 can be made of a metal material with high thermal conductivity such as copper or aluminum.

[0092] In some embodiments, the second heat exchange tube 240 can include a plurality of second structural segments 241. The second structural segment 241 can include an S-shaped structural segment. When the second heat exchange tube 240 includes a plurality of second structural segments 241, the plurality of second structural segments 241 can be connected end to end in sequence. Thus, the layout length of the second heat exchange tube 240 in the first heat exchange chamber 201 can be extended, the heat exchange path between the mixed gas and the exhaust gas can be extended, ensuring that the mixed gas fully absorbs the heat in the exhaust gas, improving the recovery utilization rate of the heat in the exhaust gas, and enhancing the energy-saving effect.

[0093] In some other embodiments, the second structural segment 241 can further include one or more of structures such as a U-shaped structural segment, a Z-shaped structural segment, and an M-shaped structural segment. Of course, when the second heat exchange tube 240 includes a plurality of second structural segments 241, the plurality of second structural segments 241 can respectively select structural segments with different shapes, making the overall shape of the second heat exchange tube 240 irregular.

[0094] In addition, the second heat exchange tube 240 can be arranged from one end close to the mixing chamber 401 to the end close to the burner head 130, and can be arranged in a layout from bottom to top along the first direction M. Correspondingly, when the mixed gas enters the burner head 130 through the second heat exchange tube 240, the temperature of the exhaust gas around the path it passes through gradually increases, so as to ensure that the mixed gas entering the burner head 130 can have a relatively high temperature.

[0095] As Figure 3 and Figure 4 shown, in some other embodiments, the second heat exchange tube 240 can be arranged around the peripheral side of the inner furnace wall plate 120, that is, the second heat exchange tube 240 can be arranged around the peripheral side of the combustion chamber 101, and can be spirally arranged from top to bottom or from bottom to top along the first direction M, that is, the second heat exchange tube 240 is generally in a spiral distribution.

[0096] In some other embodiments, the layout of the second heat exchange tube 240 can also be in a Z shape, an M shape or an irregular shape.

[0097] In some embodiments, the second heat exchange unit 300 further includes a second heat conducting fin 250, and the second heat conducting fin 250 can be connected to the second heat exchange tube 240. Thus, the contact area with the exhaust gas can be increased, the heat exchange efficiency between the exhaust gas and the mixed gas can be improved, and the temperature of the mixed gas when output can be increased.

[0098] In the embodiment, the second heat exchange unit 300 can include a plurality of second heat conducting fins 250, and the plurality of second heat conducting fins 250 can be sequentially arranged at intervals along the second direction N. The second heat exchange tube 240 can pass through the plurality of second heat conducting fins 250 and be connected to the plurality of second heat conducting fins 250. It can be understood that the second heat exchange tube 240 can pass through the second heat conducting fin 250 multiple times. Thereby, the contact area with the exhaust gas can be further increased, and the heat exchange efficiency between the exhaust gas and the mixed gas can be improved.

[0099] In some embodiments, the second heat conducting fin 250 can be made of a metal material with high thermal conductivity such as copper or aluminum.

[0100] In the embodiment, the first heat exchange unit 200 is integrated in the stove body 100, which can reduce the overall volume of the gas stove 1000, reduce the occupied space of the gas stove 1000, improve the space utilization rate, and at the same time, is also conducive to the industrial development of the gas stove 1000.

[0101] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0102] The foregoing has shown and described the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present application and are not used to limit the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and all these changes and improvements fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A gas stove, characterized in that: It comprises a stove body (100), a first heat exchange unit (200), a second heat exchange unit (300) and a mixing chamber (401); The stove body (100) comprises a combustion chamber (101) and an exhaust hole (102) which are connected to each other, and the exhaust hole (102) is used to exhaust the waste gas in the combustion chamber (101); The first heat exchange unit (200) comprises a first heat exchange chamber (201) and a second heat exchange chamber (202), and the second heat exchange unit (300) comprises a third heat exchange chamber (301) and a fourth heat exchange chamber (302); The exhaust hole (102) is connected to the first heat exchange chamber (201) and the third heat exchange chamber (301) in sequence; the input end of the mixing chamber (401) is used to connect to the gas source (2000) and the air source respectively; the output end of the mixing chamber (401) is connected to the second heat exchange chamber (202) and the combustion chamber (101) in sequence; and the fourth heat exchange chamber (302) is used to contain water.

2. The gas stove according to claim 1, characterized in that: The stove body (100) further comprises a collecting chamber (104), wherein the collecting chamber (104) is arranged around the circumference of the combustion chamber (101) and is communicated with the exhaust hole (102); The first heat exchange unit (200) comprises a first shell (210) and a first heat exchange tube (220); the first heat exchange chamber (201) is formed in the first shell (210); the first heat exchange chamber (201) is communicated with the collecting chamber (104); the second heat exchange chamber (202) is formed in the first heat exchange tube (220); and the first heat exchange tube (220) is arranged in the first shell (210).

3. The gas stove according to claim 2, characterized in that: The first heat exchange tube (220) has a plurality of first structural segments (221), wherein the first structural segments (221) include at least one of a U-shaped structural segment, an S-shaped structural segment, an M-shaped structural segment and a Z-shaped structural segment; When the first heat exchange tube (220) has a plurality of the first structural segments (221), the plurality of the first structural segments (221) are connected end to end in sequence.

4. The gas stove according to claim 3, characterized in that: The first heat exchange unit (200) comprises a plurality of first heat conducting plates (230), and the plurality of first heat conducting plates (230) are sequentially arranged at intervals along a first direction (M); The first heat exchange tube (220) is passed through the plurality of first heat conducting plates (230) and is connected to the plurality of first heat conducting plates (230).

5. The gas stove according to claim 1, characterized in that: The first heat exchange cavity (201) is formed in the stove body (100) and is arranged around the circumference of the combustion cavity (101); The first heat exchange unit (200) comprises a second heat exchange tube (240), the second heat exchange cavity (202) is formed in the second heat exchange tube (240), and the second heat exchange tube (240) is arranged in the first heat exchange cavity (201).

6. The gas stove according to claim 5, characterized in that: The second heat exchange tube (240) has a plurality of second structural segments (241), and the second structural segments (241) include at least one of a U-shaped structural segment, an S-shaped structural segment, an M-shaped structural segment, and a Z-shaped structural segment; When the second heat exchange tube (240) has a plurality of the second structural segments (241), the plurality of the second structural segments (241) are connected end to end in sequence.

7. The gas stove according to claim 6, characterized in that: The first heat exchange unit (200) comprises a plurality of second heat conducting plates (250), and the plurality of second heat conducting plates (250) are sequentially arranged at intervals along a second direction (N); The second heat exchange tube (240) passes through the plurality of second heat conducting plates (250) and is connected to the plurality of second heat conducting plates (250).

8. The gas stove according to claim 7, characterized in that: The second heat exchange tubes (240) are distributed from the end close to the mixing chamber (401) to the end close to the combustion chamber (101) from bottom to top along the gravity direction.

9. The gas stove according to claim 5, characterized in that: The second heat exchange tubes (240) are distributed around the combustion chamber (101) and are arranged in a spiral along the direction of gravity.

10. The gas stove according to any one of claims 1 to 9, characterized in that: The second heat exchange unit (300) comprises a second shell (310) and a pot body (320), the third heat exchange chamber (301) is formed in the second shell (310), the fourth heat exchange chamber (302) is formed in the pot body (320), and the pot body (320) is embedded in the second shell (310).

11. The gas stove according to claim 1, characterized in that: The gas stove further comprises an acid-base neutralizer (520), wherein the acid-base neutralizer (520) is connected to the third heat exchange chamber (301) and is located at the bottom of the third heat exchange chamber (301) in the gravity direction; The acid-base neutralizer (520) is used to neutralize the condensed water in the third heat exchange chamber (301).

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