CN216080344U - Stainless steel heat exchanger assembly and gas water heater - Google Patents

Abstract

The utility model discloses a stainless steel heat exchanger assembly and a gas water heater. The stainless steel heat exchanger component comprises a shell and a heat exchanger main body, wherein the shell is formed by combining a front side plate, a rear side plate, a left side plate and a right side plate so as to form openings at the top and the bottom of the shell; the heat exchanger main body is fixed at an opening at the top of the shell and is connected with a water inlet pipe and a water outlet pipe; the front side plate, the rear side plate, the left side plate and the right side plate are all heat dissipation plates, heat dissipation channels are arranged in the heat dissipation plates, the heat dissipation channels form air inlets on the outer side faces of the heat dissipation plates, and the heat dissipation channels form air outlets on the top faces of the heat dissipation plates. The utility model can dissipate heat of the heat exchanger, reduce the surface temperature of the gas water heater and improve the user experience.

Description

Stainless steel heat exchanger assembly and gas water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a stainless steel heat exchanger assembly and a gas water heater.

Background

Most of the current gas water heaters use copper heat exchangers, and the copper heat exchangers have the prominent defects that: under the environment of worse water quality, the copper heat exchanger is easy to react with the worse water quality, thereby leading to the water pipe of the heat exchanger to be broken, the water heater to be damaged and even leading to the floor and other properties in the house of the user to be damaged. For this reason, some water heaters in the market use stainless steel heat exchangers, as shown in the utility model with publication number CN211316548U, which not only have better quality, but also do not need external coil pipes and are easy to install. However, as the coil is omitted, the housing of the heat exchanger is heated too much, which in turn causes the temperature of the housing of the gas water heater to be high, and if the housing is touched by a user, the user may be scalded, which undoubtedly reduces the user experience.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stainless steel heat exchanger assembly and a gas water heater, which can dissipate heat of a heat exchanger, reduce the surface temperature of the gas water heater and improve user experience.

In order to solve the problems, the utility model adopts the following technical scheme:

according to a first aspect of the present invention, embodiments of the present invention provide a stainless steel heat exchanger assembly comprising a housing and a heat exchanger body, the housing being formed by combining a front side plate, a rear side plate, a left side plate and a right side plate to form openings at both the top and bottom of the housing; the heat exchanger main body is fixed at an opening at the top of the shell and is connected with a water inlet pipe and a water outlet pipe; the front side plate, the rear side plate, the left side plate and the right side plate are all heat dissipation plates, heat dissipation channels are arranged in the heat dissipation plates, the heat dissipation channels form air inlets on the outer side faces of the heat dissipation plates, and the heat dissipation channels form air outlets on the top faces of the heat dissipation plates.

In some embodiments, the water inlet pipe and the water outlet pipe are respectively arranged at two ends of the heat exchanger body in the length direction; the two ends of the heat exchanger main body in the length direction are respectively fixed on the top surfaces of the left side plate and the right side plate, and the front side plate and the rear side plate are respectively fixed on two side surfaces of the heat exchanger main body in the width direction.

In some embodiments, the heat exchanger body comprises two end plates respectively located at two ends of the heat exchanger body in the length direction, and the heat exchange structure is located and fixed between the two end plates, and the air outlet on the top surface of the left side plate and the air outlet on the top surface of the right side plate are respectively located on the inner sides of the two end plates.

In some embodiments, the top of the front side plate and the top of the rear side plate are provided with oppositely protruding pinch plates which are fixed on the top surface of the heat exchanger main body.

In some embodiments, the front side plate comprises a front inner cover plate and a front outer cover plate, the front inner cover plate and the front outer cover plate enclose a heat dissipation channel of the front side plate; the rear side plate comprises a rear inner cover plate and a rear outer cover plate, and the rear inner cover plate and the rear outer cover plate are enclosed to form a heat dissipation channel of the rear side plate; the left side plate comprises a left inner cover plate and a left outer cover plate, and the left inner cover plate and the left outer cover plate are enclosed to form a heat dissipation channel of the left side plate; the right side plate comprises a right inner cover plate and a right outer cover plate, and the right inner cover plate and the right outer cover plate are enclosed to form a heat dissipation channel of the right side plate.

In some embodiments, the rear inner cover plate, the left inner cover plate and the right inner cover plate are integrally connected to form an inner frame plate; the rear outer cover plate, the left outer cover plate and the right outer cover plate are integrally connected to form an outer frame plate.

In some embodiments, a plurality of first positioning protrusions are arranged on the front inner cover plate, a plurality of first positioning grooves matched with the first positioning protrusions are arranged on the front outer cover plate, and the first positioning protrusions are inserted into the first positioning grooves; the inner frame plate is provided with a plurality of second positioning bulges, the outer frame plate is provided with a plurality of second positioning grooves matched with the second positioning bulges, and the second positioning bulges are inserted into the second positioning grooves.

In some embodiments, the front inner cover plate and the front outer cover plate are provided with a first connecting structure for connecting the front inner cover plate and the front outer cover plate, the rear inner cover plate and the rear outer cover plate are provided with a second connecting structure for connecting the rear inner cover plate and the rear outer cover plate, the left inner cover plate and the left outer cover plate are provided with a third connecting structure for connecting the left inner cover plate and the left outer cover plate, and the right inner cover plate and the right outer cover plate are provided with a fourth connecting structure for connecting the right inner cover plate and the right outer cover plate.

In some embodiments, the top of the left inner cover plate is provided with a left guide plate, an air outlet of the left side plate is formed between the left guide plate and the left outer cover plate, and the left guide plate is gradually close to the left outer cover plate in the upward extending direction; the top of right side inner shroud is provided with right deflector, form the gas outlet of right side board between right deflector and the right outer shroud, and in the direction that upwards extends, right deflector is close to right outer shroud gradually.

In some embodiments, the top of the left outer cover plate and the top of the right outer cover plate are both provided with flanges, and two ends of the heat exchanger body in the length direction are respectively fixed on the flanges of the left outer cover plate and the right outer cover plate.

According to a second aspect of the utility model, an embodiment of the utility model provides a gas water heater, which comprises the stainless steel heat exchanger assembly of any one of the embodiments of the first aspect, wherein a fan assembly is fixed on the top of the heat exchanger main body, and a burner assembly is fixed at an opening at the bottom of the shell.

In some embodiments, the gas water heater further comprises a bypass pipe, the end of the water outlet pipe is connected with a water outlet connector, one end of the bypass pipe is welded with the water inlet pipe, and the other end of the bypass pipe is in threaded connection with the water outlet connector.

The utility model has at least the following beneficial effects:

1. the four side plates of the shell are provided with the heat dissipation channels, the heat dissipation channels respectively form the air inlet and the air outlet on the outer side surfaces and the top surfaces of the side plates, and upward flowing air flow is formed in the heat dissipation channels under the action of upward flowing hot air flow in the inner side of the shell, so that external cold air enters from the air inlet and flows out from the air outlet, and the air in the heat dissipation channels takes away heat on the shell to dissipate heat of the heat exchanger, so that the heat conducted to the surface of the gas water heater is reduced, the surface temperature of the gas water heater can be reduced, a user cannot be scalded, and the user experience is improved;

2. the heat dissipation channel is provided with an air inlet and an air outlet on the outer side surface and the top surface of the side plate respectively, air enters the heat dissipation channel from the outer side of the side plate and is blown out from the top surface of the side plate, so that flame inside the shell is not interfered, and the flame can be kept stable;

3. the four side plates are formed by combining the inner cover plate and the outer cover plate, so that the four side plates are convenient to combine to form a heat dissipation channel, and the shell with the two-layer structure has the function of reducing noise, so that the combustion is more silent;

4. the rear inner cover plate, the left inner cover plate and the right inner cover plate are integrally connected to form an inner frame plate, and the rear outer cover plate, the left outer cover plate and the right outer cover plate are integrally connected to form an outer frame plate, so that the assembly of the whole heat exchanger assembly is facilitated, and the later maintenance is also facilitated;

5. the heat exchanger main body, the inner frame plate, the water inlet pipe and the water outlet pipe are made of stainless steel, and compared with a traditional copper heat exchanger, the heat exchanger is better in corrosion resistance and longer in service life.

Drawings

FIG. 1 is a schematic structural view of a stainless steel heat exchanger assembly according to one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a stainless steel heat exchanger assembly according to one embodiment of the present invention;

FIG. 3 is an exploded schematic view of a stainless steel heat exchanger assembly according to one embodiment of the present invention;

FIG. 4 is an exploded view of the front plate of one embodiment of the present invention;

FIG. 5 is a schematic structural view of an outer frame plate and an inner frame plate according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a gas water heater according to an embodiment of the present invention;

fig. 7 is a partial structural schematic view of a gas water heater according to an embodiment of the utility model.

Wherein the reference numerals are:

the hinge comprises a shell 100, a front side plate 110, a front inner cover plate 111, a front outer cover plate 112, a buckle 113, a first positioning protrusion 114, a first positioning groove 115, a rear side plate 120, a rear inner cover plate 121, a rear outer cover plate 122, a second positioning protrusion 123, a second positioning groove 124, a left side plate 130, a left inner cover plate 131, a left outer cover plate 132, a left guide plate 133, a flange 134, a right side plate 140, a right inner cover plate 141, a right outer cover plate 142, a right guide plate 143, an inner frame plate 150, an outer frame plate 160, a first connecting structure 171, a first recess 1711, a second recess 1712, a second connecting structure 172, a third connecting structure 173 and a fourth connecting structure 174;

heat exchanger body 200, end plate 210;

a heat dissipation channel 300, an air inlet 310, an air outlet 320;

a water inlet pipe 410, a water outlet pipe 420, a water outlet joint 430 and a bypass pipe 440;

a burner assembly 500;

fan assembly 600, enclosure 610, fan 620, and exhaust duct 630.

Detailed Description

The present disclosure provides the following description with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but such details are to be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the literal meanings, but are used by the inventors to enable a clear and consistent understanding of the disclosure. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

The terms "having," "may have," "including," or "may include" used in various embodiments of the present disclosure indicate the presence of the respective functions, operations, elements, etc., disclosed, but do not limit additional one or more functions, operations, elements, etc. Furthermore, it is to be understood that the terms "comprises" or "comprising," when used in various embodiments of the present disclosure, are intended to specify the presence of stated features, integers, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, or groups thereof.

It will be understood that when an element (e.g., a first element) is "connected" to another element (e.g., a second element), the element can be directly connected to the other element or intervening elements (e.g., a third element) may be present.

An embodiment of the present invention provides a stainless steel heat exchanger assembly, as shown in fig. 1 to 3, which includes a case 100 and a heat exchanger main body 200, the case 100 is combined by a front side plate 110, a rear side plate 120, a left side plate 130, and a right side plate 140 to form a rectangular cylinder-like structure, and openings are formed at both the top and bottom of the case 100. An opening at the bottom of the case 100 is used to provide a burner, the heat exchanger body 200 is fixed at the opening at the top of the case 100, and the heat exchanger body 200 is connected with a water inlet pipe 410 and a water outlet pipe 420, and a flame generated by the combustion of the burner can be located inside the case 100 to heat the heat exchanger body 200. The water inlet pipe 410 supplies cold water to the heat exchanger body 200, the heat exchanger body 200 heats the water after absorbing heat, and the water outlet pipe 420 outputs hot water. In this embodiment, the heat exchanger body 200 may have a rectangular parallelepiped shape, and the water inlet pipe 410 does not need to be wound around the outer side surface of the casing 100, so that the installation structure can be simplified, and the cost of the gas water heater can be reduced.

The front side plate 110, the rear side plate 120, the left side plate 130 and the right side plate 140 are all heat dissipation plates, heat dissipation channels 300 are arranged in the heat dissipation plates, the heat dissipation channels 300 form air inlets 310 on the outer side surfaces of the heat dissipation plates, and the heat dissipation channels 300 form air outlets 320 on the top surfaces of the heat dissipation plates. Because the hot air flow inside the casing 100 flows upwards, under the drive of the hot air flow, the upwards flowing air flow is also formed in the heat dissipation channel 300, so that the external cold air enters from the air inlet 310 and flows out from the air outlet 320, the heat on the casing 100 is taken away by the air in the heat dissipation channel 300, and the heat is dissipated to the heat exchanger, thus, the heat conducted to the surface of the gas water heater is reduced, the temperature on the surface of the gas water heater can be reduced, a user cannot be scalded, and the user experience is improved.

In some embodiments, the water inlet pipe 410 and the water outlet pipe 420 are respectively disposed at two ends of the heat exchanger body 200 in the length direction, the two ends of the heat exchanger body 200 in the length direction are respectively fixed on the top surfaces of the left side plate 130 and the right side plate 140, the front side plate 110 and the rear side plate 120 are respectively fixed on two side surfaces of the heat exchanger body 200 in the width direction, and the front side plate 110 and the rear side plate 120 clamp and fix the heat exchanger body 200, so that the heat exchanger body 200 can be stably fixed at the top position of the housing 100. Meanwhile, because the front side plate 100 and the rear side plate 120 are respectively fixed on the side surfaces of the heat exchanger main body 200, the air outlet on the top surface of the front side plate 100 and the air outlet on the top surface of the rear side plate 120 are not blocked by the heat exchanger main body 200, the air flow in the heat dissipation channel is smoother, and the heat dissipation effect is better.

Further, the heat exchanger body 200 includes two end plates 210 respectively located at both ends of the heat exchanger body 200 in the longitudinal direction, and a heat exchange structure located between the two end plates 210, the heat exchange structure including a fin group, and a gap between adjacent fins through which air flows. Two end plates 210 may be fixed to the top surfaces of the left and right side plates 130 and 140, respectively. The air outlet on the top surface of the left side plate 130 and the air outlet on the top surface of the right side plate 140 are respectively positioned at the inner sides of the two end plates 210, and after air flow is blown out from the air outlet on the top surface of the left side plate 130 and the air outlet on the top surface of the right side plate 140, the air flow can pass through the gaps between the adjacent fins, so that the air flow in the heat dissipation channels in the left side plate 130 and the right side plate 140 is smoother, and the heat dissipation effect is further improved.

Furthermore, flow guiding structures may be disposed at the air outlet on the top surface of the left side plate 130 and the air outlet on the top surface of the right side plate 140, so that the air flow blown out from the air outlet blows towards the inner side surface of the end plate 210, and thus the air flow can flow upwards along the inner side surface of the end plate 210, thereby reducing the influence on the hot air flow inside the casing 100 and keeping the flame stable.

In some embodiments, as shown in fig. 4, the front side plate includes a front inner cover plate 111 and a front outer cover plate 112, the front inner cover plate 111 is located inside the front outer cover plate 112, the front inner cover plate 111 and the front outer cover plate 112 may both be in a cover-like structure, and the front inner cover plate 111 and the front outer cover plate 112 enclose to form a heat dissipation channel of the front side plate. Wherein, the both ends of preceding curb plate length direction accessible screw is fixed respectively on left side board and right side board.

The top of the front housing plate 112 may be provided with a pinch plate 113, and the air outlet on the front side plate may be provided on the pinch plate 113. The pinch plate 113 may be provided with a plurality of mounting holes to facilitate mounting of a fan assembly at the top of the heat exchanger body.

In order to facilitate the installation of the front inner shroud 111 and the front outer shroud 112, a plurality of first positioning protrusions 114 protruding toward the front outer shroud 112 are disposed on the front inner shroud 111, a plurality of first positioning grooves 115 matched with the first positioning protrusions 114 are disposed on the front outer shroud 112, and specifically, the number and positions of the first positioning protrusions 114 correspond to the number and positions of the first positioning grooves 115, respectively. When the front inner cover plate 111 and the front outer cover plate 112 are installed, only the first positioning protrusion 114 needs to be inserted into the first positioning groove 115, so that the front inner cover plate 111 and the front outer cover plate 112 can be accurately aligned, and the installation efficiency can be improved.

In this embodiment, the front inner cover plate 111 and the front outer cover plate 112 are provided with a first connecting structure 171 for connecting the front inner cover plate 111 and the front outer cover plate 112, and the front inner cover plate 111 and the front outer cover plate 112 which are mounted together are connected more stably by the first connecting structure 171.

The first connecting structure 171 includes a first recess 1711 disposed on the inner housing plate, a second recess 1712 disposed on the outer housing plate, and a connecting member, the first recess 1711 and the second recess 1712 may be recessed in opposite directions, after the front inner housing plate 111 and the front outer housing plate 112 are combined together, the first recess 1711 and the second recess 1712 may be closely attached together, and the first recess 1711 and the second recess 1712 are both provided with mounting holes therethrough, and the connecting member may pass through the mounting holes of the two, so as to connect the front inner housing plate 111 and the front outer housing plate 112 together. Wherein the connecting member may be a screw.

Therefore, the front side plate of the embodiment is easy to assemble, and the condition inside the shell and the condition of the heat exchanger main body can be observed by disassembling the front side plate, so that the later maintenance is facilitated.

In some embodiments, as shown in fig. 5, the rear side plate includes a rear inner cover plate 121 and a rear outer cover plate 122, the rear inner cover plate 121 is located at an inner side of the rear outer cover plate 122, and the rear inner cover plate 121 and the rear outer cover plate 122 enclose to form a heat dissipation channel of the rear side plate. The left side plate comprises a left inner cover plate 131 and a left outer cover plate 132, the left inner cover plate 131 is located at the inner side of the left outer cover plate 132, and the left inner cover plate 131 and the left outer cover plate 132 enclose a heat dissipation channel forming the left side plate. The right plate includes a right inner shield plate 141 and a right outer shield plate 142, the right inner shield plate 141 is located at the inner side of the right outer shield plate 142, and the right inner shield plate 141 and the right outer shield plate 142 enclose a heat dissipation channel forming the right plate. The top of the rear outer cover plate 122 can also be provided with a pinch plate, the air outlet on the rear side plate is arranged on the pinch plate, and the pinch plate can also be provided with a plurality of mounting holes so as to conveniently mount a fan assembly positioned at the top of the heat exchanger main body.

In this embodiment, the rear inner panel 121, the left inner panel 131, and the right inner panel 141 are integrally connected to form an inner panel 150; the rear cover plate 122, the left cover plate 132, and the right cover plate 142 are integrally connected to form an outer frame plate 160. This facilitates manufacturing, and when assembling, only the inner frame plate 150 needs to be mounted on the inner side of the outer frame plate 160, which can simplify the mounting process and facilitate the operation.

In this embodiment, the inner bezel 150 is provided with a plurality of second positioning protrusions 123, the outer bezel 160 is provided with a plurality of second positioning grooves 124 matching with the second positioning protrusions 123, and specifically, the number and the positions of the second positioning protrusions 123 correspond to the number and the positions of the second positioning grooves 124, respectively. When the inner frame plate 150 and the outer frame plate 160 are mounted, the second positioning protrusion 123 is inserted into the second positioning groove 124, so that the inner frame plate 150 and the outer frame plate 160 can be accurately aligned, and the mounting efficiency can be improved.

In this embodiment, the rear inner cover plate 121 and the rear outer cover plate 122 are provided with a second connecting structure 172 for connecting the rear inner cover plate 121 and the rear outer cover plate 122, the left inner cover plate 131 and the left outer cover plate 132 are provided with a third connecting structure 173 for connecting the left inner cover plate 131 and the left outer cover plate 132, the right inner cover plate 141 and the right outer cover plate 142 are provided with a fourth connecting structure 174 for connecting the right inner cover plate 141 and the right outer cover plate 142, and the inner cover plate and the outer cover plate which are combined together are connected more stably through the connecting structures. The second connecting structure 172, the third connecting structure 173 and the fourth connecting structure 174 may all adopt the same structural design as the first connecting structure 171.

In this embodiment, a left guide plate 133 is disposed on the top of the left inner cover plate 131, an air outlet of the heat dissipation channel of the left side plate is formed between the left guide plate 133 and the left outer cover plate 132, the left guide plate 133 may extend obliquely upward, and in the direction of upward extension, the left guide plate 133 is gradually close to the left outer cover plate 132. Similarly, a right guide plate 143 is disposed on the top of the right inner cover plate 141, an air outlet of the heat dissipation channel of the right side plate is formed between the right guide plate 143 and the right outer cover plate 142, the right guide plate 143 may extend obliquely upward, and the right guide plate 143 is gradually close to the right outer cover plate 142 in the upward extending direction. The left guide plate 133 and the right guide plate 143 can guide the airflow so that the airflow in the heat dissipation channel is blown toward the end plate of the heat exchanger body in an obliquely outward direction, and thus the airflow blown out from the air outlet will flow upward along the inner side of the end plate to reduce the influence on the airflow inside the casing 100.

In this embodiment, the top of the left outer cover plate 132 and the top of the right outer cover plate 142 are both provided with flanges 134, and the two end plates of the heat exchanger main body are respectively fixed on the flanges 134 of the left outer cover plate 132 and the right outer cover plate 142, and can be fixed by screws. So that the air outlet on the top surface of the left side plate and the air outlet on the top surface of the right side plate are respectively positioned on the inner sides of the two end plates.

The stainless steel heat exchanger assembly of this example was installed as follows: 1. the inner frame plate 150 and the outer frame plate 160 are first installed together; 2. fixing the heat exchanger main body 200 to the left side plate 130, the right side plate 140, and the rear side plate 120; 3. mounting the front inner shroud 111 and the front outer shroud 112 together; 4. assembling the front side plate 110 to the left and right side plates 130 and 140, and fixing the heat exchanger main body 200 with the front side plate 110; 5. an inlet pipe 410 and an outlet pipe 420 are installed at both ends of the heat exchanger body 200. Therefore, the installation process of the stainless steel heat exchanger assembly of the present embodiment is simpler than that of the conventional stainless steel heat exchanger assembly.

An embodiment of the present invention provides a gas water heater, as shown in fig. 6, which includes the stainless steel heat exchanger assembly of any of the above embodiments, a fan assembly 600 is fixed on the top of the heat exchanger main body 200, and a burner assembly 500 is fixed at an opening at the bottom of the housing 100. The burner assembly 500 is used to burn a gas to form a flame. The fan assembly 600 is used to exhaust the flue gas formed by combustion.

The fan assembly 600 may include a smoke exhaust hood 610, a fan 620, and a smoke exhaust pipe 630, the smoke exhaust hood 610 is covered on the heat exchanger main body 200, an air inlet of the fan 620 is connected to the smoke exhaust hood 610, an air outlet of the fan 620 is connected to the smoke exhaust pipe 630, and under the action of the fan 620, smoke is exhausted from the smoke exhaust pipe 630.

In some embodiments, as shown in fig. 7, the gas water heater of the present embodiment further includes a bypass pipe 440 for solving the problem of "warm-up after water cut". The end of the outlet pipe 420 is connected with a water outlet joint 430 so that the outlet pipe 420 is connected with an external pipeline. One end of the bypass pipe 440 is welded with the water inlet pipe 410, the other end is provided with a thread structure, a threaded hole is arranged on the water outlet joint 430, and when the bypass pipe 440 needs to be connected, the bypass pipe 440 and the water outlet joint 430 are connected in a threaded mode. This can reduce the welding degree of difficulty of bypass pipe 440, and does not need the frock clamp of welding usefulness, compares both ends all welded fastening's mode, can reduce the cracked risk of bypass pipe 440 in the transportation.

In some embodiments, the heat exchanger body 200, the inner frame plate 150, the water inlet pipe 410, and the water outlet pipe 420 are made of stainless steel, which has better corrosion resistance and longer service life than a conventional copper heat exchanger.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the utility model is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.

Claims (10)

1. A stainless steel heat exchanger assembly characterized by: the heat exchanger comprises a shell and a heat exchanger main body, wherein the shell is formed by combining a front side plate, a rear side plate, a left side plate and a right side plate so as to form openings at the top and the bottom of the shell; the heat exchanger main body is fixed at an opening at the top of the shell and is connected with a water inlet pipe and a water outlet pipe; the front side plate, the rear side plate, the left side plate and the right side plate are all heat dissipation plates, heat dissipation channels are arranged in the heat dissipation plates, the heat dissipation channels form air inlets on the outer side faces of the heat dissipation plates, and the heat dissipation channels form air outlets on the top faces of the heat dissipation plates.

2. The stainless steel heat exchanger assembly of claim 1, wherein: the water inlet pipe and the water outlet pipe are respectively arranged at two ends of the heat exchanger body in the length direction; the two ends of the heat exchanger main body in the length direction are respectively fixed on the top surfaces of the left side plate and the right side plate, and the front side plate and the rear side plate are respectively fixed on two side surfaces of the heat exchanger main body in the width direction.

3. The stainless steel heat exchanger assembly of claim 2, wherein: the heat exchanger main part comprises two end plates and a heat exchange structure, wherein the two end plates are respectively positioned at two ends of the heat exchanger main part in the length direction, the heat exchange structure is positioned and fixed between the two end plates, and the air outlet on the top surface of the left side plate and the air outlet on the top surface of the right side plate are respectively positioned on the inner sides of the two end plates.

4. A stainless steel heat exchanger assembly according to any of claims 1 to 3, wherein: the front side plate comprises a front inner cover plate and a front outer cover plate, and the front inner cover plate and the front outer cover plate are enclosed to form a heat dissipation channel of the front side plate; the rear side plate comprises a rear inner cover plate and a rear outer cover plate, and the rear inner cover plate and the rear outer cover plate are enclosed to form a heat dissipation channel of the rear side plate; the left side plate comprises a left inner cover plate and a left outer cover plate, and the left inner cover plate and the left outer cover plate are enclosed to form a heat dissipation channel of the left side plate; the right side plate comprises a right inner cover plate and a right outer cover plate, and the right inner cover plate and the right outer cover plate are enclosed to form a heat dissipation channel of the right side plate.

5. The stainless steel heat exchanger assembly of claim 4, wherein: the rear inner cover plate, the left inner cover plate and the right inner cover plate are integrally connected to form an inner frame plate; the rear outer cover plate, the left outer cover plate and the right outer cover plate are integrally connected to form an outer frame plate.

6. The stainless steel heat exchanger assembly of claim 5, wherein: the front outer cover plate is provided with a plurality of first positioning bulges, a plurality of first positioning grooves matched with the first positioning bulges are formed in the front inner cover plate, and the first positioning bulges are inserted into the first positioning grooves; the inner frame plate is provided with a plurality of second positioning bulges, the outer frame plate is provided with a plurality of second positioning grooves matched with the second positioning bulges, and the second positioning bulges are inserted into the second positioning grooves.

7. The stainless steel heat exchanger assembly of claim 4, wherein: the front outer cover plate is provided with a front inner cover plate and a front outer cover plate, the front inner cover plate and the front outer cover plate are provided with a first connecting structure for connecting the front inner cover plate and the front outer cover plate, the rear inner cover plate and the rear outer cover plate are provided with a second connecting structure for connecting the rear inner cover plate and the rear outer cover plate, the left inner cover plate and the left outer cover plate are provided with a third connecting structure for connecting the left inner cover plate and the left outer cover plate, and the right inner cover plate and the right outer cover plate are provided with a fourth connecting structure for connecting the right inner cover plate and the right outer cover plate.

8. The stainless steel heat exchanger assembly of claim 4, wherein: a left guide plate is arranged at the top of the left inner cover plate, an air outlet of a left side plate is formed between the left guide plate and the left outer cover plate, and the left guide plate is gradually close to the left outer cover plate in the upward extending direction; the top of right side inner shroud is provided with right deflector, form the gas outlet of right side board between right deflector and the right outer shroud, and in the direction that upwards extends, right deflector is close to right outer shroud gradually.

9. A gas water heater, its characterized in that: comprising a stainless steel heat exchanger assembly according to any of claims 1 to 8, a fan assembly being secured to the top of the heat exchanger body and a burner assembly being secured to the housing at the bottom opening.

10. The gas water heater of claim 9, wherein: the gas water heater also comprises a bypass pipe, the end part of the water outlet pipe is connected with a water outlet joint, one end of the bypass pipe is welded with the water inlet pipe, and the other end of the bypass pipe is in threaded connection with the water outlet joint.

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