CN216244883U - Combustion heat exchange water heater - Google Patents

Abstract

The utility model discloses a combustion heat exchange water heater, which comprises a combustion heat collecting box and a water heat exchanger, wherein a combustion chamber is arranged in the combustion heat collecting box, a combustor arrangement port is arranged at the bottom of the combustion chamber, a smoke exhaust port is arranged at the top of the combustion chamber, the water heat exchanger is fixedly arranged at the inner top of the combustion chamber and just arranged in the smoke exhaust port, and the side wall body of the water heat exchanger is tightly connected with the inner wall of the combustion chamber; the upper part of the combustion heat collecting box of the product is wrapped around the heat absorbing sheets of the water heat exchanger, so that the heat can be more concentrated, the heat absorbing sheets can obtain more heat, and the heat exchange efficiency is higher; the burning heat collecting box and the water heat exchanger are made into an integrated assembly, the wall-mounted furnace is convenient to install, the assembly production efficiency of the wall-mounted furnace is improved, and the labor cost is saved.

Description

Combustion heat exchange water heater

Technical Field

The utility model relates to a wall-mounted boiler water heating device, in particular to a combustion heat exchange water heater.

Background

1. The product belongs to a heat exchanger of a water heater, is a core component of a gas water heater and a gas wall-mounted heating furnace, and is used for heating water, and the hot water is used for bathing or heating; in the existing heat exchanger of the type, a heat exchanger is separated from a combustion box, the heat exchanger is fixed at the right top of the combustion box, the periphery of the heat exchanger is exposed outside, and heat of the heat exchanger after combustion can leak and run off from left, right, front and back in the heat exchange process, so that partial waste of the heat is caused; 2. some manufacturers purchase the heat exchanger from the factory, purchase the combustion box from another factory and then assemble the two parts in order to reduce the cost, and since the matched products produced by the manufacturers have some differences, the products are not matched when being assembled, and phenomena such as some connecting gaps, asymmetry and the like can be generated; 2. the integral height of the heat exchanger fixed on the right top of the combustion box is higher, and the height of the shell of the water heater/wall-mounted heating furnace needs to be increased when the heat exchanger is matched with the water heater or the wall-mounted heating furnace.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the combustion heat exchange water heater which is reasonable in design, integrally produced and formed, convenient to install and capable of improving the production efficiency.

The scheme for solving the technical problems is as follows:

the utility model provides a burning heat transfer water heater, gathers hot case, water heat exchanger including the burning, and burning gathers hot incasement portion and is the combustion chamber, and the bottom of combustion chamber arranges mouth, top for the combustor and is the exhaust port, water heat exchanger fixed mounting just arranges in the exhaust port at the interior top of combustion chamber, water heat exchanger's lateral wall body and combustion chamber inner wall zonulae occludens.

The combustion heat exchange water heater has the beneficial effects that: the water heat exchanger of the product is fixedly arranged at the inner top of the combustion chamber and is just arranged in the smoke exhaust port, the circumferential wall body of the water heat exchanger is tightly connected with the inner wall of the combustion chamber, and the upper part of the combustion heat gathering box is wrapped around the heat absorbing sheets of the water heat exchanger, so that the heat can be more concentrated, the heat absorbing sheets can obtain more heat, and the heat exchange efficiency is higher; the burning heat collecting box and the water heat exchanger are made into an integrated assembly, the wall-mounted furnace is convenient to install, the assembly production efficiency of the wall-mounted furnace is improved, and the labor cost is saved.

Drawings

Fig. 1, 2, 3 and 4 are perspective views of the product of the utility model;

FIG. 5 is a rear view of the product of the present invention;

FIG. 6 is a top view of a product of the utility model;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 8 is a front view of the product of the present invention;

FIG. 9 is a sectional view taken along line A-A of FIG. 8;

FIG. 10 is a left side view of the product of the present invention;

FIGS. 11, 12 and 13 are exploded views of the product of the present invention;

FIG. 14, FIG. 15 and FIG. 16 are perspective views of the combustion heat collecting box of the product of the utility model;

FIG. 17, FIG. 18 and FIG. 19 are perspective views of the inner reflector frame of the product of the present invention;

FIG. 20 is a perspective view of a left reflective shroud of the product of the present invention;

FIG. 21 is a perspective view of a right reflective shroud of the product of the present invention;

FIG. 22 is a perspective view of a front reflective enclosure of the product of the present invention;

FIG. 23 is a perspective view of a rear reflective enclosure of the product of the present invention;

FIG. 24 is a perspective view of a left water bag sealing plate of the present invention;

FIG. 25 is a perspective view of a right water pocket sealing plate of the utility model;

FIG. 26 is a perspective view of a left raised water jacket panel of the present invention;

FIG. 27 is a perspective view of a right convex water jacket sheet of the present invention;

FIGS. 28 and 29 are perspective views of heat absorbing sheets of the product of the utility model;

FIG. 30 is an enlarged partial cross-sectional view of a heat sink sheet of the product of the present invention;

FIGS. 31 and 32 are perspective views of a spoiler of a product of the present invention;

FIGS. 33 and 34 are perspective views of the insulating layer of the product of the present invention;

FIG. 35 is a perspective view of a dash panel of the present invention;

FIG. 36 is a perspective view of a back panel of the product of the present invention;

fig. 37 and 38 are perspective views of the product water heat exchanger of the utility model.

The device comprises a combustion heat collecting box 1, a shell surrounding frame 101, an inner reflection plate surrounding frame 102, a reflection blind concave hole 103, a grid 104, a dividing groove 105, a combustor arrangement port 11, a combustion chamber 12 and a smoke exhaust port 13;

the heat guide device comprises a left enclosing plate 1A, a right enclosing plate 1B, a front enclosing plate 1C, a rear enclosing plate 1D, a left reflection enclosing plate 2A, a right reflection enclosing plate 2B, a front reflection enclosing plate 2C, a rear reflection enclosing plate 2D, a heat guide slope shrinkage step 106, a pipe penetrating hole 107 and a heat insulation layer 108; the water heat exchanger 2, the water inlet joint pipe 21, the right water flow turning device 22, the right convex water drum plate 221, the right water drum sealing plate 222, the right water flow conversion cavity 223, the right circulation conversion joint hole 224, the heat exchange transverse water pipe 23, the spoiler 231, the heat absorbing sheet 24, the hot gas circulation gap 241, the pipe transverse through hole 242, the aluminum coating 243, the heat exchange through hole 244, the left water flow turning device 25, the left convex water drum plate 251, the left water drum sealing plate 252, the left conversion water flow cavity 253, the left circulation conversion joint hole 254, the water outlet joint pipe 26 and the bypass pipe 27.

Detailed Description

A combustion heat exchange water heater comprises a combustion heat collecting box 1 and a water heat exchanger 2, wherein a combustion chamber 12 is arranged inside the combustion heat collecting box 1, a burner arrangement port 11 is formed in the bottom of the combustion chamber 12, a smoke exhaust port 13 is formed in the top of the combustion chamber 12, a fire burner is arranged at the burner arrangement port 11, generated fire is in the combustion chamber 12, and the fire is combusted from bottom to top; the water heat exchanger 2 is fixedly arranged at the inner top of the combustion chamber 12 and is just arranged in the smoke exhaust port 13 and is just arranged at the tail part of a fire, the obtained heat is the most, the side wall body of the water heat exchanger 2 is tightly connected with the inner wall of the combustion chamber 12, so that the heat can only pass through a hot air circulation gap 241 of the inner body of the water heat exchanger 2, and the heat utilization rate is improved; according to the product, the water heat exchanger 2 is fixedly arranged in the smoke exhaust port 13, so that the overall height can be reduced, the heat absorbing sheets 24 of the water heat exchanger 2 are wrapped circumferentially, heat can be concentrated, waste heat can only be exhausted from the top of the water heat exchanger 2, the heat absorbing sheets 24 can obtain more heat, and the heat exchange efficiency is higher; make the assembly of integrative integrated form with burning heat accumulation case 1 and water heat exchanger 2, it is more convenient when the installation hanging stove, improve hanging stove equipment production efficiency, save labour cost.

Further: the water heat exchanger 2 comprises a water inlet joint pipe 21, a right water flow turning device 22, a plurality of heat exchange transverse water pipes 23, a plurality of heat absorbing fins 24, a left water flow turning device 25 and a water outlet joint pipe 26; the heat exchange cross water pipes 23 are generally provided with four to twelve cross water pipes, and are determined according to heat exchange power. The left water flow turning device 25 and the right water flow turning device 22 provide roundabout turning circulation for water flow. The plurality of heat exchange transverse water pipes 23, the left water flow turning device 25 and the right water flow turning device 22 provide longer water channels for heat exchange, so that the heat exchange efficiency is improved, and the heat exchange area is increased.

The water inlet joint pipe 21 is communicated with a water inlet of the right water flow turning device 22, and the water outlet joint pipe 26 is communicated with a water outlet of the left water flow turning device 25;

the heat absorbing sheets 24 are transversely connected in a stacked mode to form a heat absorbing sheet group, hot air circulation gaps 241 are formed among the heat absorbing sheets 24, the hot air circulation gaps 241 are used for hot air circulation, the heat exchange transverse water pipes 23 tightly penetrate through the heat absorbing sheets 24, the heat absorbing sheets 24 and the heat exchange transverse water pipes 23 are fixedly welded and connected into a whole, heat transfer efficiency is improved, the left ends of the heat exchange transverse water pipes 23 are connected with the left water flow turning device 25 in a sealing mode, and the right ends of the heat exchange transverse water pipes 23 are connected with the right water flow turning device 22 in a sealing mode; the inside water course that the device 22, the horizontal water pipe 23 of a plurality of heat exchanges, the device 25 that turns round of water flow in the water inlet joint pipe 21, right rivers, play water joint pipe 26 is one-way circulation, and water gets into from the water inlet joint pipe 21, and the device 22 that turns round of water flow in the right rivers, the horizontal water pipe 23 of a plurality of heat exchanges, the device 25 that turns round of water flow and circuitous one-way circulation that turns round of turning round of water flow in the right rivers, flows out from play water joint pipe 26 at last.

Further: the body of the heat absorbing plate group is provided with tube transverse through holes 242 with the same number as the plurality of heat exchange transverse water tubes 23, the heat exchange transverse water tubes 23 penetrate through the tube transverse through holes 242 and are tightly connected with the heat absorbing plates 24, and the joints are fixed through welding.

Further: the heat absorbing sheet 24 is made of stainless steel, and the surface of the heat absorbing sheet 24, the welding port and the exposed heat exchange transverse water pipe 23 are all wrapped with a layer of aluminum coating 243 with high temperature resistance of over 300 ℃.

The aluminum coating 243 has an anti-oxidation function, the heat absorbing sheet 24 made of stainless steel cannot be oxidized and corroded by the burnt smoke, and the stainless steel sheet has certain hardness and is not easy to soften and deform at high temperature during burning; the whole heat exchange effect that is close to aluminium saves manufacturing cost greatly, can both guarantee the product durable and improve the heat transfer effect under the relatively poor condition of gas quality.

For use in areas where fuel gas quality is high or where southern weather temperatures are relatively high, the aluminum coating 243 may not be used in order to reduce production costs.

Further: the body of the heat absorbing sheet 24 is provided with a plurality of irregular heat exchange through holes 244, so that hot air flows disorderly, a turbulent flow effect is achieved, the heat shunt circulation and heat absorption area is increased, and the heat exchange efficiency is improved.

Further: a flow disturbing piece 231 is arranged in the heat exchange transverse water pipe 23, and the flow disturbing piece 231 can disturb the flow of water in the flowing process, so that the water can be disturbed and collide the inner wall of the pipe to absorb more heat; the plurality of heat exchange transverse water pipes 23 can be completely or partially internally provided with a flow disturbing piece 231;

the spoiler 231 is a spoiler or a spring or a combination of the spoiler and the spring, and the spoiler or the spring plays a good spoiler role, so that the heat absorption efficiency of water is improved;

the spoiler is a spiral spoiler or a strip-shaped spoiler, so that a good turbulence effect is achieved, and the heat absorption efficiency of water is improved; the protruding piece of vortex that is provided with on the slice bar vortex piece and is perforated the protruding formation by the punching press, water can scurry the circulation each other, plays fine vortex effect, improves the heat absorption efficiency of water.

Further: the left water flow turning device 25 comprises a left convex water drum plate 251 and a left water drum sealing plate 252, a plurality of left conversion water flow cavities 253 are arranged on the left convex water drum plate 251 to provide space for water flow turning, the left conversion water flow cavities 253 are sealed after the left convex water drum plate 251 is covered by the left water drum sealing plate 252 in a sealing mode, two left circulation conversion joint holes 254 are formed in the left water drum sealing plate 252 opposite to each left conversion water flow cavity 253, and the two left circulation conversion joint holes 254 are arranged to enable one of the left conversion water flow cavities to enable water to flow in and enable the water to flow out of the other left conversion water flow cavity 253 after the left conversion water flow cavity 253 turns;

the right water flow turning device 22 comprises a right convex water drum plate 221 and a right water drum sealing plate 222, wherein a plurality of right turning water flow cavities 223 are formed in the right convex water drum plate 221 to provide space for water flow turning, the right water drum sealing plate 222 covers the right convex water drum plate 221 to seal the right turning water flow cavities 223, two right circulation switching joint holes 224 are formed in the right water drum sealing plate 222 at the position opposite to each right turning water flow cavity 223, and the two right circulation switching joint holes 224 are arranged to enable one of the right flow switching joint holes to enable water to flow in and enable the water to flow out of the other right flow switching joint hole after being turned by the left turning water flow cavity 253;

the pipe heads at the two ends of the plurality of heat exchange transverse water pipes 23 are in staggered sealing butt joint with the corresponding left circulation conversion joint holes 254 and right circulation conversion joint holes 224, and each heat exchange transverse water pipe 23 is in staggered communication with the corresponding left conversion water flow cavity 253 and right conversion water flow cavity 223 so as to enable water flow to circulate in a single direction;

the water inlet joint pipe 21 is communicated with the water inlet of the first right-conversion water flow cavity 223, and the water outlet joint pipe 26 is communicated with the water outlet of the last left-conversion water flow cavity 253.

Further: the first left-hand conversion water flow cavity 253 of the left water flow turning device 25 is connected with the bypass pipe 27 between the water outlet joint pipe 26 and the first left-hand conversion water flow cavity 253, and because the spoiler 231 is arranged in the heat exchange transverse water pipe 23, if the water flow of the water inlet joint pipe 21 is too large, when the heat exchange transverse water pipe 23 cannot provide enough circulation capacity, the redundant water can directly flow to the water outlet joint pipe 26 from the bypass pipe 27, and the water pressure at the end of the water inlet joint pipe 21 is reduced.

Further: the heat exchange transverse water pipes 23 comprise a combination of a circular pipe and an oval pipe, the circular pipe is arranged at the front and the back of the heat absorbing plate group, the oval pipe is arranged at the middle of the heat absorbing plate group, the heat diversion effect is achieved, the turbulence pieces 231 are arranged in the circular pipe and the oval pipe, heat is distributed reasonably, and the heat utilization rate is improved.

Further: the combustion heat collecting box 1 comprises an outer enclosure frame 101 and an inner reflection plate enclosure frame 102, the inner reflection plate enclosure frame 102 is fixedly connected to the inner wall of the outer enclosure frame 101, a combustion chamber 12 is arranged inside the inner reflection plate enclosure frame 102, and a combustor arrangement port 11 and a smoke exhaust port 13 are arranged on the inner reflection plate enclosure frame 102; the inner surface of the inner reflecting plate surrounding frame 102 is smooth and reflective; the inner wall of the inner reflection plate enclosure frame 102 is provided with a plurality of reflection blind concave holes 103 with upward inclined openings, and the reflection blind concave holes 103 reflect heat upwards.

Further: the upward inclined angle of the reflection blind concave hole 103 is 20-70 degrees, preferably 30-60 degrees; the burnt flare passes through the blind shrinkage pool of slope reflection 103 and the surface of reflection of light, upwards reflects the heat, focuses on the heat exchanger fin of water heat exchanger 2, can reduce the temperature of interior reflecting plate bounding box 102 like this, can improve heat utilization ratio through up heat reflection.

Further: the shape of the reflection blind concave hole 103 is conical, circular, trumpet-shaped, elliptic or hemispherical.

Further: the inner reflection plate enclosure frame 102 comprises a stainless steel substrate layer and a high-temperature resistant stainless reflection layer, and the stainless reflection layer is electroplated on the surface of the stainless steel substrate layer. The height resistance of the inner reflecting plate enclosure frame 102 is 400-800 ℃.

Further: the inner reflection plate surrounding frame 102 is formed with a plurality of cells 104 through stamping, dividing grooves 105 are formed among the cells, the cells are raised, and each cell is provided with a reflection blind concave hole 103 which is inclined upwards to reflect light; the purpose of the cells is to increase the rigidity of the inner baffle frame 102 and prevent it from deforming under high temperature during combustion.

Further: the adjacent distance between the reflection blind concave holes 103 is less than 10 mm; the depth of the reflective blind recess 10311 is less than 5 mm; the maximum opening diameter or width of the reflective blind recess 10311 is less than 15 mm.

Further: the thickness of the reflecting metal plate 1 is less than 5 mm; the length and the width of the reflecting metal plate 1 are both less than 300 millimeters.

Further: the outer shell surrounding frame 101 and the inner reflection plate surrounding frame 102 are rectangular; the outer shell enclosure frame 101 comprises a left enclosure plate 1A, a right enclosure plate 1B, a front enclosure plate 1C and a rear enclosure plate 1D, the left enclosure plate, the right enclosure plate, the front enclosure plate and the rear enclosure plate are fixedly connected with each other, and the left enclosure plate, the right enclosure plate, the front enclosure plate and the rear enclosure plate are respectively integrally formed; the inner reflection plate enclosure frame 102 comprises a left reflection enclosing plate 2A, a right reflection enclosing plate 2B, a front reflection enclosing plate 2C and a rear reflection enclosing plate 2D, the left reflection enclosing plate, the right reflection enclosing plate, the front reflection enclosing plate and the rear reflection enclosing plate are fixedly connected with each other, and the left reflection enclosing plate, the right reflection enclosing plate, the front reflection enclosing plate and the rear reflection enclosing plate are respectively integrally formed.

Further: the upper sections of the front reflection coaming 2C and the rear reflection coaming 2D are respectively provided with a heat diversion slope reduction step 106, the heat diversion slope reduction step 106 inclines for 25-45 degrees, the width between the upper sections of the front reflection coaming and the rear reflection coaming is reduced for 1-3 cm, the front and rear walls of the water heat exchanger 2 are tightly connected with the front reflection coaming and the upper section wall body of the rear reflection coaming, during combustion, the heat of the combustion chamber 12 plays a certain thermal diversion disturbing role through the heat diversion slope reduction step, the heat at the front and rear parts of the combustion chamber 12 is prevented from directly rushing upwards, the heat diversion slope reduction step enables the heat to be gathered towards the middle part of the water heat exchanger 2, and the heat exchange efficiency is improved because the middle part of the water heat exchanger 2 needs more heat exchange.

Further: the upper sections of the left side and the right side of the inner reflecting plate enclosure frame 102 are respectively provided with pipe penetrating holes 107 with the same number as that of the heat exchange transverse water pipes 23 (namely, the upper sections of the left reflecting enclosure plate 2A and the right reflecting enclosure plate 2B are respectively provided with the pipe penetrating holes 107 with the same number as that of the heat exchange transverse water pipes 23), the heat exchange transverse water pipes 23 are tightly penetrated and fixed in the pipe penetrating holes 107, the left end and the right end of the water heat exchanger 2 are correspondingly and tightly attached to the left inner wall and the right inner wall of the inner reflecting plate enclosure frame 102, the structure enhances the connection stability of the water heat exchanger 2 and the combustion heat collecting box 1, simultaneously prevents the left end and the right end of the water heat exchanger 2 from excessively losing heat due to large gaps, and improves the heat utilization rate; the left water flow turning device 25 and the right water flow turning device 22 are respectively arranged on the outer walls of the upper sections of the left side and the right side of the corresponding inner reflection plate enclosure frame 102; because of the characteristics of the production process, a certain gap is formed between the left water flow turning device 25 and the right water flow turning device 22 and the left end and the right end of the corresponding water heat exchanger 2, the gap is about 1 cm, if the inner reflection plate enclosure frame 102 is arranged on the outer walls of the left water flow turning device 25 and the right water flow turning device 22, much heat of the combustion chamber 12 is lost from the left end and the right end, and in order to prevent heat loss, the upper section of the inner reflection plate enclosure frame 102 is arranged between the water flow turning device and the water heat exchanger 2 (namely, a left reflection enclosure plate is arranged between the left water flow turning device 25 and the left end of the water heat exchanger 2, the left end of the water heat exchanger 2 is closely connected with the corresponding left reflection enclosure plate, a right reflection enclosure plate is arranged between the right water flow turning device 22 and the right end of the water heat exchanger 2, and the right end of the water heat exchanger 2 is closely connected with the corresponding right reflection enclosure plate).

Further: a heat insulation layer 108 is fixedly clamped between the outer shell surrounding frame 101 and the inner reflection plate surrounding frame 102; the heat insulation layer 108 is an aluminum silicate refractory material heat insulation layer, so that heat is prevented from being diffused and lost from the combustion heat accumulation box 1, and the heat insulation effect is improved.

Further: the water outlet joint pipe 26 is connected with a temperature control sheet and nut component brass joint. The water outlet joint pipe 26 may be formed by connecting a plurality of sections of pipe members in sequence.

Further: the water inlet joint pipe 21 can be formed by sequentially connecting a plurality of sections of pipe fittings and comprises a brass joint.

Further: the sealing connection between all the accessories of the product is sealed by the combination or welding of the sealing ring and the screw component.

Further: nine heat exchange transverse water pipes 23 are provided, and nine pipe transverse through holes 242 corresponding to the heat absorbing plate groups are provided; the upper sections of the left side and the right side of the inner reflection plate enclosure frame 102 are respectively provided with nine pipe penetrating holes 107 with the same number as the heat exchange transverse water pipes 23; the number of the left switching water flow cavities 253 is four, and the number of the corresponding left circulation switching joint holes 254 is eight; the number of the right switching flow chambers 223 is four, and the number of the corresponding right flow switching joint holes 224 is eight in total.

Claims (10)

1. The utility model provides a burning heat transfer water heater, gathers hot case, water heat exchanger including the burning, and the burning gathers hot incasement portion and is the combustion chamber, and the bottom of combustion chamber arranges mouthful, the top for the combustor is the exhaust port, its characterized in that: the water heat exchanger is fixedly arranged at the inner top of the combustion chamber and is just arranged in the smoke exhaust port, and the side wall body of the water heat exchanger is tightly connected with the inner wall of the combustion chamber.

2. The combustion heat exchange water heater of claim 1, wherein: the water heat exchanger comprises a water inlet joint pipe, a water outlet joint pipe, a plurality of heat exchange transverse water pipes, a plurality of heat absorption sheets, a left water flow turning device and a right water flow turning device;

the water inlet joint pipe is communicated with a water inlet of the right water flow turning device, and the water outlet joint pipe is communicated with a water outlet of the left water flow turning device;

the heat absorption plates are transversely connected in a stacked mode, hot air circulation gaps are formed among the heat absorption plates, the heat exchange transverse water pipes tightly penetrate through the heat absorption plate bodies, the heat absorption plates and the heat exchange transverse water pipes are welded, fixed and connected into a whole, the left ends of the heat exchange transverse water pipes are connected with the left water flow turning device, and the right ends of the heat exchange transverse water pipes are connected with the right water flow turning device; the water inlet joint pipe, the right water flow turning device, the plurality of heat exchange transverse water pipes, the left water flow turning device and the water outlet joint pipe are communicated in a one-way mode.

3. The combustion heat exchange water heater of claim 2, wherein: the heat absorbing sheet is made of stainless steel, and the surface of the heat absorbing sheet, the welding port and the exposed heat exchange transverse water pipe are all wrapped with a layer of aluminum coating which can resist the high temperature of more than 300 ℃.

4. The combustion heat exchange water heater of claim 2, wherein: a turbulence piece is arranged in the heat exchange transverse water pipe; the spoiler is a spoiler or a spring or the combination of the spoiler and the spring; the spoiler is a spiral spoiler or a strip spoiler; the strip-shaped spoiler is provided with a spoiler convex part formed by punching and punching a hole in a protruding manner.

5. The combustion heat exchange water heater of claim 2, wherein: the left water flow turning device comprises a left convex water bag plate and a left water bag sealing plate, a plurality of left conversion water flow cavities are formed in the left convex water bag plate, the left conversion water flow cavities are sealed after the left convex water bag plate is covered by the left water bag sealing plate, and two left circulation conversion joint holes are formed in the left water bag sealing plate at the position opposite to each left conversion water flow cavity;

the right water flow turning device comprises a right convex water bag plate and a right water bag sealing plate, a plurality of right conversion water flow cavities are formed in the right convex water bag plate, the right water bag sealing plate covers the right convex water bag plate and then seals the right conversion water flow cavities, and two right circulation conversion joint holes are formed in the right water bag sealing plate at the position opposite to each right conversion water flow cavity;

the tube heads at the two ends of the plurality of heat exchange transverse water tubes are in staggered sealing butt joint with the corresponding left circulation conversion joint holes and right circulation conversion joint holes, and each heat exchange transverse water tube is in staggered communication with the corresponding left conversion water flow cavity and right conversion water flow cavity so as to enable water flow to circulate in a single direction;

the water inlet joint pipe is communicated with a water inlet of the first right-conversion water flow cavity, and the water outlet joint pipe is communicated with a water outlet of the last left-conversion water flow cavity.

6. The combustion heat exchange water heater of claim 5, wherein: and a bypass pipe is connected between the first left-conversion water flow cavity of the left water flow turning device and the water outlet joint pipe.

7. The combustion heat exchange water heater of claim 2, wherein: the heat exchange transverse water pipes comprise a combination of a regular circular pipe and an elliptical pipe.

8. The combustion heat exchange water heater of claim 2, wherein: the combustion heat-collecting box comprises an outer shell surrounding frame and an inner reflecting plate surrounding frame, the inner reflecting plate surrounding frame is fixedly connected to the inner wall of the outer shell surrounding frame, a combustion chamber is arranged inside the inner reflecting plate surrounding frame, and a combustor arrangement port and a smoke exhaust port are arranged on the inner reflecting plate surrounding frame; the inner surface of the inner reflecting plate surrounding frame is smooth and reflects light; the inner wall of the inner reflecting plate enclosing frame is provided with a plurality of reflection blind concave holes with upward inclined openings, and the reflection blind concave holes reflect heat upwards.

9. The combustion heat exchange water heater of claim 8, wherein: the upper sections of the left side and the right side of the inner reflecting plate enclosing frame are respectively provided with pipe penetrating holes with the same number as that of the heat exchange transverse water pipes, the heat exchange transverse water pipes are tightly penetrated and fixed in the pipe penetrating holes, and the left end and the right end of the water heat exchanger are correspondingly attached to the left inner wall and the right inner wall of the inner reflecting plate enclosing frame; the left water flow turning device and the right water flow turning device are respectively arranged on the outer walls of the upper sections of the left side and the right side of the corresponding inner reflecting plate enclosing frame.

10. The combustion heat exchange water heater of claim 8, wherein: a heat insulation layer is fixedly clamped between the outer shell surrounding frame and the inner reflection plate surrounding frame; the heat insulation layer is an aluminum silicate refractory material heat insulation layer.

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