Stainless steel heat exchanger with welding end subjected to heat insulation protection

Abstract

A stainless steel heat exchanger with a heat insulation protection welding end comprises a left water outlet seat, a water outlet connector, a right water inlet seat, a water inlet connector, a top heat exchange tube set, a middle heat exchange tube set, a lower heat exchange tube set and heat exchange fins, and further comprises a left heat insulation shell with a left opening and a right heat insulation shell with a right opening. A left fixed seat plate and a right fixed seat plate are respectively arranged at the bottoms of the left heat insulation shell and the right heat insulation shell; the two ends of the top heat exchange tube set, the two ends of the middle heat exchange tube set and the two ends of the lower heat exchange tube set extend into the left heat insulation shell and the right heat insulation shell respectively. The left water outlet base and the right water inlet base are located in the left heat insulation shell and the right heat insulation shell respectively. Heat energy generated by gas combustion moves upwards through a cavity formed by the front wall plate, the rear wall plate, the left heat insulation base and the right heat insulation base of the combustion chamber, waste gas generated by gas combustion is prevented from corroding welding spots, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to a gas-fired hot water device, and more particularly to a heat exchanger. Background Technology

[0002] The existing technology, Chinese Patent 201920378133.0, discloses a heat exchanger and a gas water heater. The heat exchanger includes: multiple stainless steel heat exchange tubes, a first stainless steel cover, and a second stainless steel cover. The first stainless steel cover has multiple first connecting holes for connecting one end of each of the stainless steel heat exchange tubes. The second stainless steel cover has multiple second connecting holes for connecting the other end of each of the stainless steel heat exchange tubes. The first stainless steel cover also has a first connecting cavity for connecting the stainless steel heat exchange tubes to form a heat exchange path. The second stainless steel cover also has a second connecting cavity for connecting the stainless steel heat exchange tubes to form a heat exchange path. The heat exchanger described above has strong corrosion resistance and effectively extends the service life of the gas water heater. Utility Model Content

[0003] The purpose of this utility model is to provide a stainless steel heat exchanger with weld end heat insulation protection, which has the feature of protecting the welded joints of the heat exchange tubes with the left outlet seat and the right inlet seat.

[0004] This utility model is implemented as follows: A stainless steel heat exchanger with welded end heat insulation protection includes a left outlet seat, an outlet connector, a right inlet seat, an inlet connector, a top heat exchange tube assembly, a middle heat exchange tube assembly, a bottom heat exchange tube assembly, and heat exchange fins. The top, middle, and bottom heat exchange tube assemblies, along with their respective top, middle, and bottom heat exchange tubes, are connected in series via the right inlet seat and the left outlet seat. The top heat exchange tube at the rear of the top heat exchange tube assembly serves as the inlet pipe, and the bottom heat exchange tube at the front of the bottom heat exchange tube assembly serves as the outlet pipe. Its unique feature is that it also includes a left-opening left insulation shell and a right-opening right insulation shell.

[0005] The bottom of the left and right heat insulation shells are respectively provided with a left fixed base plate and a right fixed base plate;

[0006] The top heat exchanger tube group, the middle heat exchanger tube group and the bottom heat exchanger tube group have their ends inserted into the left insulation shell and the right insulation shell, respectively. The left water outlet seat and the right water inlet seat are located in the left insulation shell and the right insulation shell, respectively, and there is an insulation gap between them and the wall panel.

[0007] The stainless steel heat exchanger with weld end heat insulation protection is characterized in that: the left outlet seat includes a left seat plate and a left cover plate.

[0008] The bottom of the left seat plate is provided with a left bottom water guide shell and a left plate connector pipe hole, the middle part is provided with a left middle water guide shell, and the top part is provided with a left top water guide shell and a left series water shell.

[0009] The bottom, middle and top of the left cover plate are provided with several horizontally arranged left pipe holes, and the left pipe holes are provided with right flanges;

[0010] The left cover plate and the left seat plate are fitted, sealed, and welded together. The left cover plate covers the left bottom water guide shell, the left middle water guide shell, the left top water guide shell, and the left series water shell to form the top water guide cavity, the left middle water guide cavity, the left series water cavity, and the left bottom water guide cavity; the left plate joint pipe hole and the bottom pipe hole form the left bottom pipe hole.

[0011] The right water inlet seat includes a right seat plate and a right cover plate.

[0012] The bottom of the right seat plate is provided with a right bottom water guide shell and a right plate connector pipe hole, the middle part is provided with a right middle water guide shell, and the top part is provided with a right top water guide shell and a right series water shell.

[0013] The bottom, middle and top of the right cover plate are provided with several horizontally arranged right pipe holes, and the right pipe holes are provided with left flanges;

[0014] The right cover plate and the right seat plate are fitted, sealed, and welded together. The right cover plate covers the right bottom water guide shell, the right middle water guide shell, the right top water guide shell, and the right series water shell, forming the right top water guide cavity, the right middle water guide cavity, the right series water cavity, and the right bottom water guide cavity. The right plate joint pipe hole and a pipe hole at the bottom top of the right cover plate form the right top pipe hole.

[0015] The top heat exchanger tube, middle heat exchanger tube, and bottom heat exchanger tube are welded to the left flange and right flange, respectively.

[0016] The stainless steel heat exchanger with weld end insulation protection is characterized in that: the number of top water pipes in the top water pipe group and the number of bottom water pipes in the bottom water pipe group are the same, and the number of middle water pipes in the middle water pipe group is one less than the number of top water pipes in the top water pipe group and the number of bottom water pipes in the bottom water pipe group.

[0017] The stainless steel heat exchanger with weld end heat insulation protection is characterized in that: the top heat exchange tube assembly is provided with heat exchange fins.

[0018] This utility model discloses a stainless steel heat exchanger with weld end heat insulation protection. Due to this structure, the heat energy generated by the combustion of gas moves upward through the cavity formed by the front and rear wall plates of the combustion chamber, the left heat insulation seat, and the right heat insulation seat, preventing the exhaust gas generated by the combustion of gas from corroding the weld joint and extending its service life. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention.

[0020] Figure 2 This is the right view of this utility model.

[0021] Figure 3 This is the left view of this utility model.

[0022] Figure 4 This is one of the exploded perspective views of this utility model.

[0023] Figure 5 This is the second exploded perspective view of this utility model.

[0024] Figure 6 This is the third exploded perspective view of this utility model.

[0025] Figure 7 This is the fourth exploded perspective view of this utility model.

[0026] Figure 8 This is a perspective view of the present invention. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 , Figure 4 , Figure 5 As shown, a stainless steel heat exchanger with welded end heat insulation protection includes a left outlet seat 1, an outlet connector 2, a right inlet seat 3, an inlet connector 4, a top heat exchange tube assembly 51, a middle heat exchange tube assembly 52, a lower heat exchange tube assembly 53, and heat exchange fins 6. The top heat exchange tube assembly 51, the middle heat exchange tube assembly 52, and the lower heat exchange tube assembly 53, along with their respective top, middle, and lower heat exchange tubes, are connected in series via the right inlet seat 3 and the left outlet seat 1. The top heat exchange tubes at the rear of the top heat exchange tube assembly 51... The bottom heat exchanger tube group has an inlet pipe 511 connected to the inlet connector 4, and the bottom heat exchanger tube at the front of the bottom heat exchanger tube group is an outlet pipe 531 connected to the outlet connector 2. The top heat exchanger tubes in the top heat exchanger tube group 51 are connected in series, the middle heat exchanger tubes in the middle heat exchanger tube group 52 are connected in series, and the bottom heat exchanger tubes in the bottom heat exchanger tube group 53 are connected in series. The top heat exchanger tube group 51, the middle heat exchanger tube group 52, and the bottom heat exchanger tube group 53 are connected in series in sequence. The heat exchange fins 6 are provided on the top heat exchanger tube group 51.

[0030] It also includes a left heat insulation shell 71 with a left opening and a right heat insulation shell 72 with a right opening.

[0031] The left heat insulation shell 71 includes a left fixed base plate 711, a left top shell tube hole group (not shown in the figure), a left middle shell tube hole group, and a left lower shell tube hole group; the right heat insulation shell 72 includes a right fixed base plate 721, a right top shell tube hole group, a right middle shell tube hole group, and a right lower shell tube hole group.

[0032] The two ends of the top heat exchanger tube group 51, the middle heat exchanger tube group 52 and the lower heat exchanger tube group 53 pass through the left top shell tube hole group, the left middle shell tube hole group and the left lower shell tube hole group, as well as the right top shell tube hole group, the right middle shell tube hole group and the right lower shell tube hole group and extend into the left insulation shell 71 and the right insulation shell 72, respectively. The left water outlet seat 1 and the right water inlet seat 3 are located in the left insulation shell 71 and the right insulation shell 72, respectively, and there is a heat insulation gap between them and the wall plate. There is a heat dissipation gap between the left water outlet seat 1 and the left insulation shell 71, and there is a heat dissipation gap between the right water outlet seat 3 and the right insulation shell 72.

[0033] With this structure, the top heat exchanger tube assembly 51, the middle heat exchanger tube assembly 52, the lower heat exchanger tube assembly 53, the heat exchange fins 6, the left insulation shell 71, and the right insulation shell 72 are integrated into a single module, facilitating assembly and division of labor. Due to the heat insulation effect of the left insulation shell 71 and the right insulation shell 72, the welded joints do not come into contact with the flame, effectively preventing corrosion, and the relatively low temperature extends the service life.

[0034] like Figure 1 , Figure 6 , Figure 7 As shown, the left water outlet seat 1 includes a left seat plate 11 and a left cover plate 12.

[0035] The bottom of the left seat plate 11 is provided with a left bottom water guide shell 111 and a left plate connector pipe hole 112, the middle part is provided with a left middle water guide shell 113, the top part is provided with a left top water guide shell 114 and a left series water shell 115.

[0036] The bottom, middle and top of the left cover plate 12 are provided with several horizontally arranged left pipe holes 121, and the left pipe holes 121 are provided with right flanges; it can also be described as: the left cover plate 12 is provided with a left bottom pipe hole group, a left middle pipe hole group and a left top pipe hole group from bottom to top.

[0037] The left cover plate 12 and the left seat plate 11 are fitted, sealed, and welded together. The left cover plate 12 covers the left bottom water guide shell 111, the left middle water guide shell 113, the left top water guide shell 114, and the left series water shell 115, forming the top water guide cavity, the left middle water guide cavity, the left series water cavity, and the left bottom water guide cavity. The left plate joint pipe hole 112 and a pipe hole at the bottom of the left cover plate 12 form the left bottom pipe hole 13. The left series water cavity connects the left middle water guide shell 113 and the left top water guide shell 114 in series. The water outlet pipe passes through the left bottom pipe hole and is fixed. The end of the water outlet pipe 531 is connected to the water outlet joint 2.

[0038] like Figure 1 , Figure 6 , Figure 7 As shown, the right water inlet seat 3 includes a right seat plate 31 and a right cover plate 32.

[0039] The bottom of the right seat plate 31 is provided with a right bottom water guide shell 311 and a right plate connector pipe hole 312, the middle part is provided with a right middle water guide shell 313, the top part is provided with a right top water guide shell 314 and a right series water shell 315.

[0040] The bottom, middle and top of the right cover plate 32 are provided with several horizontally arranged right pipe holes 321, and the right pipe holes are provided with left flanges;

[0041] The right cover plate 32 and the right seat plate 31 are fitted, sealed, and welded together. The right cover plate 32 covers the right bottom water guide shell 311, the right middle water guide shell 313, the right top water guide shell 314, and the right series water shell 315, forming the right top water guide cavity, the right middle water guide cavity, the right series water cavity, and the right bottom water guide cavity. The right plate joint pipe hole 312 and a pipe hole at the top of the right cover plate 32 form the right top pipe hole 33. The water inlet pipe 511 passes through the right top pipe hole and is welded together.

[0042] The top heat exchanger tube, middle heat exchanger tube, and bottom heat exchanger tube are welded to the left flange and right flange, respectively.

[0043] As a further improvement of this utility model: the top water pipe group 51 has the same number of top water pipes as the bottom water pipe group 53, and the middle water pipe group 52 has one less middle water pipe than the top water pipe group 51 and the bottom water pipe group 53.

[0044] The top heat exchange tube assembly 51 is provided with heat exchange fins 6.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stainless steel heat exchanger with weld end heat insulation protection, comprising a left outlet seat, an outlet connector, a right inlet seat, an inlet connector, a top heat exchange tube assembly, a middle heat exchange tube assembly, a bottom heat exchange tube assembly, and heat exchange fins, wherein the top, middle, and bottom heat exchange tube assemblies, and their respective top, middle, and bottom heat exchange tubes, are connected in series via the right inlet seat and the left outlet seat; the rear top heat exchange tube in the top heat exchange tube assembly serves as the inlet pipe, and the front bottom heat exchange tube in the bottom heat exchange tube assembly serves as the outlet pipe; characterized in that: It also includes a left insulation shell with a left opening and a right insulation shell with a right opening. The bottom of the left and right heat insulation shells are respectively provided with a left fixed base plate and a right fixed base plate; The top heat exchanger tube group, the middle heat exchanger tube group and the bottom heat exchanger tube group have their ends inserted into the left insulation shell and the right insulation shell, respectively. The left water outlet seat and the right water inlet seat are located in the left insulation shell and the right insulation shell, respectively, and there is an insulation gap between them and the wall panel.

2. A stainless steel heat exchanger with weld end thermal insulation protection according to claim 1, characterized in that: The left water outlet seat includes a left seat plate and a left cover plate. The bottom of the left seat plate is provided with a left bottom water guide shell and a left plate connector pipe hole, the middle part is provided with a left middle water guide shell, and the top part is provided with a left top water guide shell and a left series water shell. The bottom, middle and top of the left cover plate are provided with several horizontally arranged left pipe holes, and the left pipe holes are provided with right flanges; The left cover plate and the left seat plate are fitted, sealed, and welded together. The left cover plate covers the left bottom water guide shell, the left middle water guide shell, the left top water guide shell, and the left series water shell, forming the top water guide cavity, the left middle water guide cavity, the left series water cavity, and the left bottom water guide cavity; the left plate joint pipe hole and the bottom pipe hole form the left bottom pipe hole; The right water inlet seat includes a right seat plate and a right cover plate. The bottom of the right seat plate is provided with a right bottom water guide shell and a right plate connector pipe hole, the middle part is provided with a right middle water guide shell, and the top part is provided with a right top water guide shell and a right series water shell. The bottom, middle and top of the right cover plate are provided with several horizontally arranged right pipe holes, and the right pipe holes are provided with left flanges; The right cover plate and the right seat plate are fitted, sealed, and welded together. The right cover plate covers the right bottom water guide shell, the right middle water guide shell, the right top water guide shell, and the right series water shell, forming the right top water guide cavity, the right middle water guide cavity, the right series water cavity, and the right bottom water guide cavity. The right plate joint pipe hole and a pipe hole at the bottom top of the right cover plate form the right top pipe hole. The top heat exchanger tube, middle heat exchanger tube, and bottom heat exchanger tube are welded to the left flange and right flange, respectively.

3. A stainless steel heat exchanger with weld end thermal insulation protection according to claim 1, characterized in that: The top water pipes of the top heat exchanger tube group and the bottom water pipe group have the same number of bottom water pipes, while the middle water pipe group has one less middle water pipe than the top water pipes of the top water pipe group and the bottom water pipe group.

4. A stainless steel heat exchanger with weld end thermal insulation protection according to claim 1, characterized in that: The top heat exchange tube assembly is equipped with heat exchange fins.

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