Combustion heat exchange component and gas water heater

Abstract

The present invention relates to a combustion heat exchange component and a gas water heater. The combustion heat exchange component includes a burner body and a cookware, and the cookware is arranged on the burner body such that the flame of the burner body can directly act on the bottom wall of the cookware. The cookware is provided with a water outlet, and the water outlet is located at a position in contact with the bottom wall of the cookware. The bottom wall of the cookware is provided with a plurality of concave portions recessed from the outer side surface to the inner side surface, thereby increasing the heat exchange area on the bottom wall of the cookware and improving the heat exchange efficiency. The plurality of concave portions are arranged at intervals, and a guiding flow passage communicating with the water outlet is formed between the concave portions on the inner side surface of the bottom wall. Thereby, the water in the cookware can be completely drained from the water outlet, avoiding the situation that the cookware is frozen and cracked when the temperature drops and freezes. And when increasing the heat exchange area of the bottom wall of the cookware by arranging the concave portions, the situation that the water flow is intercepted and the water cannot be completely drained will not occur. Thereby, the combustion heat exchange component can not only improve the heat exchange efficiency but also achieve the purpose of antifreeze.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a combustion heat exchange component and a gas water heater. Background Art

[0002] Gas water heaters are mainly divided into coil types and pot types. Among them, the coil type means that a coil is wound around an external heat exchanger, so that when the flue gas formed by the combustion of a burner flows through the heat exchanger, heat exchange is carried out with the water in the coil to heat the water; the pot type means that a pot is directly arranged on the burner, so that the flame of the burner directly acts on the pot to heat the water in the pot. When hot water is not required, if there is water stored in the pot, there is a risk of freezing and cracking. Improving the heat exchange efficiency is the main research direction in the design of water heaters, but it is generally difficult to have both anti-freezing and heat exchange efficiency in a general pot-type gas water heater. Summary of the Invention

[0003] Based on this, it is necessary to provide a combustion heat exchange component and a gas water heater that can both improve the heat exchange efficiency and achieve the purpose of anti-freezing.

[0004] A combustion heat exchange component includes a burner body and a pot. The pot is arranged on the burner body such that the flame of the burner body can directly act on the bottom wall of the pot. The pot is provided with a water outlet, and the water outlet is located at a position in contact with the bottom wall of the pot. The bottom wall of the pot is provided with a plurality of recesses recessed from the outer side surface to the inner side surface. The plurality of recesses are arranged at intervals, and a guiding flow passage communicating with the water outlet is formed between the recesses on the inner side surface of the bottom wall.

[0005] The above solution provides a combustion heat exchange component. By providing a plurality of recesses recessed from the outer side surface to the inner side surface on the bottom wall of the pot, the heat exchange area on the bottom wall of the pot is increased, so that more heat of the flame of the burner body can be absorbed by the water in the pot, improving the heat exchange efficiency. At the same time, the plurality of recesses are arranged at intervals, so that when draining the water in the pot, the water on the bottom wall of the pot can flow to the water outlet through the guiding flow passage between the recesses, ensuring that the water in the pot can be drained completely from the water outlet, and avoiding the situation that there is still water in the pot when the temperature drops, resulting in freezing and cracking of the pot. In other words, the situation where the protrusions formed by the recesses on the inner side surface of the pot intercept the water flow and cause the water to be unable to be drained completely will not occur because of setting the recesses to increase the heat exchange area of the bottom wall of the pot. Thus, the combustion heat exchange component can both improve the heat exchange efficiency and achieve the purpose of anti-freezing.

[0006] In one embodiment, the bottom wall of the cookware is divided into a flue gas diversion area and a heating concentration area. The flue gas diversion area extends radially across the bottom wall of the cookware along the bottom wall of the cookware. The recess is located in the heating concentration area. The flow guiding passage is communicated with the flue gas diversion area, and the flue gas diversion area is communicated with the water outlet.

[0007] In one embodiment, there are a plurality of the flue gas diversion areas. The plurality of flue gas diversion areas intersect in the middle of the bottom wall of the cookware, and a plurality of the heating concentration areas are divided on the bottom wall of the cookware. Each of the heating concentration areas is provided with a plurality of the recesses.

[0008] In one embodiment, the recess is an arc segment with the center of the bottom wall of the cookware as the center of the circle. The radii of the plurality of arc segments located in the same heating concentration area are different, and the arc segments are arranged at intervals.

[0009] In one embodiment, the water outlet is opposite to the end of the flue gas diversion area.

[0010] In one embodiment, a flue gas diversion channel spirally rising along the side wall is provided outside the side wall of the cookware. The bottom end of the flue gas diversion channel is butted with the flue gas diversion area, and the top end of the flue gas diversion channel is located at the top opening of the cookware.

[0011] In one embodiment, the recess is an arc segment extending from the middle of the bottom wall of the cookware to the side wall of the cookware. The plurality of arc segments are arranged at intervals in the circumferential direction of the bottom wall of the cookware.

[0012] In one embodiment, a flue gas diversion channel spirally rising along the side wall is provided outside the side wall of the cookware. The bottom end of the flue gas diversion channel is butted with the recess, and the top end of the flue gas diversion channel is located at the top opening of the cookware.

[0013] In one embodiment, a heat preservation outer shell is further included. The heat preservation outer shell is sleeved outside the cookware. There is a space between the heat preservation outer shell and the cookware. The bottom opening of the heat preservation outer shell is butted and connected with the burner body. A water outlet pipe is provided at the water outlet of the cookware. The water outlet pipe penetrates through the heat preservation outer shell and extends outside the heat preservation outer shell. A water inlet is provided at the top of the cookware. A water inlet pipe is provided at the water inlet. The water inlet pipe penetrates through the heat preservation outer shell and extends outside the heat preservation outer shell. A pot cover is provided at the top of the cookware. The top outlet of the heat preservation outer shell is a flue gas outlet, and an exhaust fan is provided at the flue gas outlet.

[0014] A gas water heater includes the above-mentioned combustion and heat exchange assembly.

[0015] The above solution provides a gas water heater. By adopting the combustion heat exchange component described in any of the above embodiments, the water in the cookware can be completely drained from the water outlet when not in use, avoiding the situation that the cookware is frozen and cracked due to freezing caused by temperature reduction. The setting of the concave portion does not hinder the drainage of the water in the cookware, and at the same time can increase the heat receiving area of the bottom wall of the cookware, so that more heat of the flame of the burner body can be absorbed by the water in the cookware, improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the gas water heater described in this embodiment;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 is Figure 1 a schematic structural diagram of the cookware in the gas water heater shown;

[0021] Figure 4 is Figure 3 a cross-sectional view of the cookware shown.

[0022] Description of the reference numerals:

[0023] 10. Gas water heater; 20. Combustion heat exchange component; 21. Burner body; 211. Flame; 22. Cookware; 221. Bottom wall; 2211. Concave portion; 2212. Flue gas diversion area; 2213. Heating aggregation area; 222. Side wall; 2221. Water outlet; 2222. Water inlet; 223. Pot lid; 23. Heat preservation shell; 24. Exhaust fan; 25. Water inlet pipe; 26. Water outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0025] In one embodiment, a combustion heat exchange assembly 20 is provided, as Figure 1 shown. The combustion heat exchange assembly 20 can be applied to a gas water heater 10. Specifically, as Figure 1 shown, the combustion heat exchange assembly 20 includes a burner body 21 and a cookware 22. The cookware 22 is disposed on the burner body 21 such that the flame 211 of the burner body 21 can directly act on the bottom wall 221 of the cookware 22, thereby heating the water in the cookware 22.

[0026] Further, as Figure 3 and Figure 4 shown, the cookware 22 is provided with a water outlet 2221, and the water outlet 2221 is located at a position in contact with the bottom wall 221 of the cookware 22. Specifically, as Figure 3 shown, the water outlet 2221 can be disposed at a position where the bottom end of the side wall 222 of the cookware 22 contacts the bottom wall 221. Alternatively, the water outlet 2221 is disposed on the bottom wall 221. Further, the bottom wall 221 of the cookware 22 is provided with a plurality of recesses 2211 that are recessed from the outer side surface to the inner side surface, thereby effectively increasing the heat absorption area of the bottom wall 221 of the cookware 22. The plurality of recesses 2211 are spaced apart, and a flow guiding passage communicating with the water outlet 2221 is formed between the recesses 2211 on the inner side surface of the bottom wall 221.

[0027] The combustion heat exchange assembly 20 provided by the above solution increases the heat exchange area on the bottom wall 221 of the cookware 22 by providing a plurality of recesses 2211 that are recessed from the outer side surface to the inner side surface of the cookware 22, thereby improving the heat exchange efficiency. As Figure 2 shown, more heat of the flame 211 of the burner body 21 can be absorbed by the water in the cookware 22. At the same time, the plurality of recesses 2211 are spaced apart, so that when draining the water in the cookware 22, the water in the cookware 22 can flow out from the flow guiding passage between the recesses 2211, and finally as Figure 2The water is drained from the water outlet 2221 as shown, to prevent water from remaining in the cookware 22 when the temperature drops, which may cause the cookware 22 to freeze and crack. In other words, the raised portion formed by the recess 2211 on the inner side of the cookware 22 will not intercept the water flow and prevent the water from being drained completely, even though the recess 2211 increases the heat exchange area of the bottom wall 221 of the cookware 22. Thus, the combustion heat exchange assembly 20 can not only improve the heat exchange efficiency but also achieve the purpose of anti-freezing. Moreover, the setting of the recess 2211 also makes the heat provided by the flame 211 of the burner body 21 more concentrated, further improving the heat exchange efficiency.

[0028] Specifically, as Figure 3 and Figure 4 shown, in one embodiment, the bottom wall 221 of the cookware 22 is divided into a flue gas diversion area 2212 and a heating concentration area 2213. The flue gas diversion area 2212 extends radially across the bottom wall 221 of the cookware 22 along the bottom wall 221 of the cookware 22. The recess 2211 is located in the heating concentration area 2213. The flow passage is communicated with the flue gas diversion area 2212, and the flue gas diversion area 2212 is communicated with the water outlet 2221.

[0029] Thus, the flue gas formed by the combustion of the burner body 21 can flow from the heating concentration area 2213 to the flue gas diversion area 2212, then flow around the bottom wall 221 of the cookware 22 from the flue gas diversion area 2212, and finally the flue gas can be smoothly discharged upward along the side wall of the cookware 22. When the cookware 22 is further arranged in the heat preservation housing 23, there is a space between the cookware 22 and the heat preservation housing 23, but the space is limited, and the flame 211 is located below the cookware 22. The setting of the flue gas diversion area 2212 enables the flue gas in the heat preservation housing 23 to be discharged more quickly and smoothly.

[0030] Optionally, in another embodiment, the recess 2211 is an arc section extending from the middle of the bottom wall 221 of the cookware 22 to the side wall 222 of the cookware 22. A plurality of the arc sections are arranged at intervals in the circumferential direction of the bottom wall 221 of the cookware 22.

[0031] In other words, a plurality of the recesses 2211 form a guiding groove diverging from the middle to the periphery on the outer side of the bottom wall 221 of the cookware 22, so that the flue gas can flow along the recess 2211 to the periphery of the bottom wall 221 of the cookware 22, enabling the flue gas to be discharged smoothly.

[0032] Further, in order to enable more heat to be absorbed by the water in the cookware 22 when the flue gas flowing out from the bottom wall 221 of the cookware 22 is discharged upward along the side wall 222 of the cookware 22, a flue gas diversion channel spirally rising along the side wall 222 of the cookware 22 can be arranged outside the side wall 222 of the cookware 22, so that the flue gas can fully contact the cookware 22 during the discharging process and conduct heat exchange.

[0033] Specifically, when the bottom wall 221 of the cookware 22 is divided into a flue gas diversion area 2212 and a heating and concentrating area 2213, the bottom end of the flue gas diversion channel is butted with the flue gas diversion area 2212, and the top end of the flue gas diversion channel is located at the top opening of the cookware 22. Thus, the flue gas led out from the flue gas diversion area 2212 can continue to move forward along the flue gas diversion channel and spirally rise along the side wall of the cookware 22.

[0034] When the recess 2211 is an arc section extending from the middle of the bottom wall 221 of the cookware 22 to the side wall 222 of the cookware 22, the bottom end of the flue gas diversion channel is butted with the recess 2211, and the top end of the flue gas diversion channel is located at the top opening of the cookware 22. Thus, the flue gas guided from the recess 2211 to the surroundings can continue to flow along the side wall 222 of the cookware 22 under the guiding action of the flue gas diversion channel and finally be discharged from the top of the cookware 22.

[0035] Further, in one embodiment, as Figure 1 and Figure 2 shown, the combustion heat exchange assembly 20 further includes a heat preservation housing 23, the heat preservation housing 23 is sleeved outside the cookware 22, there is a spaced arrangement between the heat preservation housing 23 and the cookware 22, and the bottom opening of the heat preservation housing 23 is butted and connected with the burner body 21. The flue gas diversion channel is located between the heat preservation housing 23 and the cookware 22.

[0036] Specifically, a spirally rising diversion plate can be arranged outside the side wall 222 of the cookware 22, and the diversion plate abuts against the heat preservation housing 23, so as to form the flue gas diversion channel.

[0037] Further, in one embodiment, as Figure 1 and Figure 2 shown, a water outlet pipe 26 is arranged at the water outlet 2221 of the cookware 22, and the water outlet pipe 26 penetrates through the heat preservation housing 23 and extends outside the heat preservation housing 23. An inlet 2222 is arranged at the top of the cookware 22, and a water inlet pipe 25 is arranged at the inlet 2222, and the water inlet pipe 25 penetrates through the heat preservation housing 23 and extends outside the heat preservation housing 23.

[0038] When heating to provide hot water for users, cold water enters the cookware 22 through the water inlet pipe 25, and hot water is discharged from the cookware 22 through the water outlet pipe 26. When not in use, the water in the cookware 22 can be discharged from the cookware 22 through the water outlet pipe 26 to avoid the situation of the cookware 22 cracking due to freezing.

[0039] Further, in one embodiment, as Figure 1 and Figure 3 shown, a pot cover 223 is provided at the top of the cookware 22, the top outlet of the heat preservation housing 23 is a flue gas outlet, and a smoke exhaust fan 24 is provided at the flue gas outlet. Finally, the flue gas in the heat preservation housing 23 is discharged from the flue gas outlet of the combustion heat exchange component 20 under the action of the smoke exhaust fan 24.

[0040] Further, in one embodiment, as Figure 3 and Figure 4 shown, there are multiple flue gas diversion areas 2212, and the multiple flue gas diversion areas 2212 intersect at the middle of the bottom wall 221 of the cookware 22, and a plurality of the heating concentration areas 2213 are divided on the bottom wall 221 of the cookware 22. Each of the heating concentration areas 2213 is provided with a plurality of the concave portions 2211. The multiple flue gas diversion areas 2212 provide more paths for the flue gas to flow through. When a flue gas diversion channel is provided outside the side wall 222 of the cookware 22, the number of the flue gas diversion channels can be the same as the number of the ends of the flue gas diversion areas 2212, and they are in one-to-one correspondence.

[0041] For example, when there are two flue gas diversion areas 2212 and the two flue gas diversion areas 2212 are cross-distributed, there are four flue gas diversion channels, and the four flue gas diversion channels are in one-to-one butt joint with the four ends of the two flue gas diversion areas 2212.

[0042] The arrangement of the multiple concave portions 2211 forms protrusions on the inner side surface of the bottom wall 221 of the cookware 22. The diversion channels formed by the intervals between the protrusions provide a guiding effect for the water flow during drainage. The protrusions protrude into the cookware 22 relative to the flue gas diversion areas 2212. Therefore, the water guided in the diversion channels formed by the intervals between the protrusions finally converges on the inner side surface of the flue gas diversion areas 2212 on the bottom wall 221 and flows along the flue gas diversion areas 2212 to the outer edge portion of the bottom wall 221, and finally is discharged from the water outlet 2221. In other words, when the water volume in the cookware 22 is small, the water in each of the heating concentration areas 2213 will flow along the diversion channels formed by the intervals between the protrusions to the flue gas diversion areas 2212, and finally flow to the water outlet 2221 under the guiding action of the inner side surface of the flue gas diversion areas 2212 on the bottom wall 221, ensuring that the water in the cookware 22 can be drained completely.

[0043] Further, as Figure 3 and Figure 4 shown, in one embodiment, the recess 2211 is an arc segment centered at the center of the bottom wall 221 of the cookware 22. The radii of the multiple arc segments located in the same heating concentration area 2213 are different, and the arc segments are spaced apart from each other.

[0044] The gaps between adjacent arc segments form an arc-shaped diversion channel on the inner side of the bottom wall 221. As Figure 4 shown, the water in the cookware 22 flows along the diversion channel to the flue gas diversion area 2212, then flows along the flue gas diversion area 2212 to the outer edge of the bottom wall 221 of the cookware 22, and then is discharged from the water outlet 2221.

[0045] When there are multiple heating concentration areas 2213, as Figure 3 and Figure 4 shown, multiple arc segments centered at the center of the bottom wall 221 of the cookware 22 will be provided in each heating concentration area 2213. And the arc segments with the same radius in each heating concentration area 2213 form a circle with a break. In other words, this circle has a break and is not a complete closed structure. The position where the flue gas diversion area 2212 passes is at this break. Thus, the water on the bottom wall 221 of the cookware 22 can flow out from the break along the flue gas diversion area 2212 to the outer edge, and finally be discharged from the water outlet 2221.

[0046] Further, as Figure 4 shown, in one embodiment, the water outlet 2221 is opposite to the end of the flue gas diversion area 2212. During the drainage process, the water on the bottom wall 221 of the cookware 22 converges to the flue gas diversion area 2212 along the diversion channel between the recesses 2211, and then flows along the flue gas diversion area 2212 to the water outlet 2221, thereby ensuring that the water in the cookware 22 can be drained completely.

[0047] In one embodiment, when the recess 2211 is an arc segment extending from the middle of the bottom wall 221 of the cookware 22 to the side wall 222 of the cookware 22, the water outlet 2221 can be located between the ends of two adjacent recesses 2211, and the recesses 2211 do not intersect in the middle of the bottom wall 221 of the cookware 22. In other words, the areas on the inner side of the bottom wall 221 divided by the recesses 2211 are connected. Finally, a small amount of water in the cookware 22 can flow between the divided areas and finally converge to the area corresponding to the water outlet 2221 and be discharged from the water outlet 2221 out of the cookware.

[0048] Further, in yet another embodiment, a gas water heater 10 is provided, which includes the combustion heat exchange assembly 20 described above.

[0049] By adopting the combustion heat exchange assembly 20 described in any of the above embodiments, the water in the cookware 22 can be completely drained from the water outlet 2221 when not in use, avoiding the situation that the water in the cookware 22 freezes when the temperature drops, resulting in the cookware 22 being frozen and cracked. The setting of the concave portion 2211 does not hinder the drainage of the water in the cookware 22, and at the same time can increase the heat absorption area of the bottom wall 221 of the cookware 22, so that more heat of the flame 211 of the burner body 21 can be absorbed by the water in the cookware 22, improving the heat exchange efficiency.

[0050] In the description of the present invention, 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. It is only for the convenience of describing the present invention 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 invention.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0054] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0056] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A combustion heat exchange component, characterized in that, It includes a burner body and a cookware. The cookware is arranged on the burner body such that the flame of the burner body can directly act on the bottom wall of the cookware. The cookware is provided with a water outlet, and the water outlet is located at a position in contact with the bottom wall of the cookware. The bottom wall of the cookware is provided with a plurality of recesses recessed from the outer side surface to the inner side surface. The plurality of recesses are arranged at intervals, and a flow guiding passage communicating with the water outlet is formed between the recesses on the inner side surface of the bottom wall; The bottom wall of the cookware is divided into a flue gas guiding area and a heating concentration area. The flue gas guiding area extends across the bottom wall of the cookware in the radial direction of the bottom wall of the cookware. The recesses are located in the heating concentration area. The flow guiding passage communicates with the flue gas guiding area, and the flue gas guiding area communicates with the water outlet; There are a plurality of the flue gas guiding areas, and the plurality of flue gas guiding areas intersect in the middle of the bottom wall of the cookware, dividing a plurality of the heating concentration areas on the bottom wall of the cookware. Each of the heating concentration areas is provided with a plurality of the recesses.

2. The combustion heat exchange component according to claim 1, wherein The recesses are arc segments centered on the center of the bottom wall of the cookware. The radii of the plurality of arc segments located in the same heating concentration area are different, and the arc segments are arranged at intervals.

3. The combustion heat exchange component according to claim 1, wherein, The water outlet is opposite to the end of the flue gas guiding area.

4. The combustion heat exchange assembly according to claim 1, characterized in that: A flue gas guiding passage spirally rising along the side wall is arranged outside the side wall of the cookware. The bottom end of the flue gas guiding passage is butted with the flue gas guiding area, and the top end of the flue gas guiding passage is located at the top opening of the cookware.

5. The combustion heat exchange component according to claim 1, characterized in that, The recesses are arc segments extending from the middle of the bottom wall of the cookware to the side wall of the cookware. The plurality of arc segments are arranged at intervals in the circumferential direction of the bottom wall of the cookware.

6. The combustion heat exchange assembly according to claim 5, characterized in that: A flue gas guiding passage spirally rising along the side wall is arranged outside the side wall of the cookware. The bottom end of the flue gas guiding passage is butted with the recesses, and the top end of the flue gas guiding passage is located at the top opening of the cookware.

7. The combustion heat exchange assembly according to any one of claims 1 to 6, characterized in that: It further includes a heat preservation housing. The heat preservation housing is sleeved outside the cookware, and there is a space between the heat preservation housing and the cookware. The bottom opening of the heat preservation housing is butted and connected with the burner body. A water outlet pipe is arranged at the water outlet of the cookware, and the water outlet pipe penetrates through the heat preservation housing and extends outside the heat preservation housing. An inlet is arranged at the top of the cookware, and an inlet pipe is arranged at the inlet. The inlet pipe penetrates through the heat preservation housing and extends outside the heat preservation housing. A pot cover is arranged at the top of the cookware. The top outlet of the heat preservation housing is a flue gas outlet, and a smoke exhaust fan is arranged at the flue gas outlet.

8. A gas water heater, characterized in that: It includes the combustion heat exchange component according to any one of claims 1 to 7.

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