Layered stainless steel heat exchanger

Abstract

A layered stainless steel heat exchanger comprises a left water guide seat, a right water guide seat, a top-layer water pipe group, a middle-layer water pipe group, a bottom-layer water pipe group, a top heat exchange fin group, a middle heat exchange fin group and a bottom heat exchange fin group, and water pipes of the top-layer water pipe group, the middle-layer water pipe group and the bottom-layer water pipe group are connected in series through the left water guide seat and the right water guide seat respectively. The top-layer water pipe group, the middle-layer water pipe group and the bottom-layer water pipe group are connected in series through the left water guide seat and the right water guide seat; the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group are respectively arranged on the top-layer water pipe group, the middle-layer water pipe group and the bottom-layer water pipe group; the number of heat exchange fins in the top heat exchange fin set, the number of heat exchange fins in the middle heat exchange fin set and the number of heat exchange fins in the bottom heat exchange fin set are reduced gradually from top to bottom. Water flows out of the bottom-layer water pipe group through the top-layer water pipe group and the middle-layer water pipe group. Due to layered arrangement, water flows from top to bottom, and the heat exchange efficiency is improved; the technical problem of stainless steel thermal hysteresis is solved through the number of the fins; the device is made of stainless steel and is corrosion-resistant.

Description

Technical Field

[0001] The utility model relates to a heat exchanger for a gas water heater. Background Art

[0002] The current state of the art, according to Chinese Patent 202120797124.2, describes a single-channel gas heat exchanger, belonging to the field of heat exchangers. The heat exchanger comprises a heat absorption assembly, a front fixing plate, a rear fixing plate, and several water pipes. The front and rear fixing plates are located on the front and rear sides of the heat absorption assembly, respectively. The heat absorption assembly comprises several heat transfer fins arranged in sequence from front to back. The heat transfer fins are provided with several fixing holes arranged in sequence from left to right. Each fixing hole is penetrated by a water pipe. The fixing holes in all heat transfer fins at the same position are passed through by the same water pipe. All water pipes are fixed to the front and rear fixing plates at both ends, respectively. Adjacent water pipes are connected at one end by an elbow, and all water pipes and elbows together form a circuitous channel. The problem is that the water pipes and heat transfer fins are made of copper, and corrosion resistance needs to be addressed. Utility Model Content

[0003] The purpose of the utility model is to provide a layered stainless steel heat exchanger which has the characteristics of corrosion resistance and high heat exchange efficiency.

[0004] The utility model is realized as follows: a layered stainless steel heat exchanger, which is special in that it includes a left water guide seat, a right water guide seat, a top water pipe group, a middle water pipe group, a bottom water pipe group, a top heat exchange fin group, a middle heat exchange fin group and a bottom heat exchange fin group,

[0005] The water pipes of the top water pipe group, the middle water pipe group and the bottom water pipe group are connected in series through the left water guide seat and the right water guide seat respectively, and the top water pipe group, the middle water pipe group and the bottom water pipe group are connected in series through the left water guide seat and the right water guide seat; the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group are respectively arranged on the top water pipe group, the middle water pipe group and the bottom water pipe group; the number of heat exchange fins in the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group gradually decreases from top to bottom; water flows out from the bottom water pipe group through the top water pipe group and the middle water pipe group.

[0006] The special feature of the layered stainless steel heat exchanger is that the areas of the heat exchange fins of the bottom heat exchange fin group, the heat exchange fins of the middle heat exchange fin group and the heat exchange fins of the top heat exchange fin group gradually increase from bottom to top.

[0007] The special feature of the layered stainless steel heat exchanger is that the left water guide seat includes a left top water guide cavity, a left middle water guide cavity, a left series water cavity, a left bottom water guide cavity, a left bottom pipe hole and a left bottom joint; one end of the left series water cavity corresponds to the left bottom water guide cavity, and the other end corresponds to the left middle water guide cavity; the left bottom water guide cavity and the left bottom pipe hole are in a straight line;

[0008] Two pipe holes are respectively provided on the left top water guide cavity, the left middle water guide cavity, the left series water cavity and the left bottom water guide cavity;

[0009] The right water guide seat includes a right top water guide cavity, a right top pipe hole, a right middle water guide cavity, a right series water cavity, a right bottom water guide cavity and a right top joint, one end of the right series water cavity corresponds to the right middle water guide cavity, and the other end corresponds to the right top water guide cavity, and the right middle water guide cavity and the right top pipe hole are in a straight line;

[0010] Two pipe holes are respectively provided on the right top water guide cavity, the right middle water guide cavity, the right series water cavity and the right bottom water guide cavity;

[0011] One end of the bottom water pipe of the bottom water pipe group is connected to a pipe hole of the left series water cavity, the pipe hole of the left bottom water pipe cavity and cooperates with the left bottom pipe hole, and the other end is connected to the pipe hole on the right bottom water pipe cavity, and the left bottom joint pipe passes through the left bottom pipe hole and is connected to the bottom water pipe; one end of the middle water pipe of the middle water pipe group is connected to the pipe hole of the left middle water pipe cavity and the other pipe hole of the left series water cavity, and the other end is connected to the pipe hole of the right middle water pipe cavity and a pipe hole of the right series water cavity; one end of the top water pipe of the top water pipe group is connected to the pipe hole of the left top water pipe cavity, and the other end is connected to one end pipe hole of the right series water cavity, the pipe hole of the right top water pipe cavity and the right top pipe hole, the right top joint pipe is connected to the top water pipe passing through the right top pipe hole, and the top water pipe of the top water pipe group is fixed to the fixed hole of the fixed pipe hole group of the heat exchange fin.

[0012] The special feature of the layered stainless steel heat exchanger is that the number of top water pipes in the top water pipe group is the same as the number of bottom water pipes in the bottom water pipe group, 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.

[0013] The special feature of the layered stainless steel heat exchanger is that the right water guide seat comprises a right water guide seat body with a side opening and a right water guide plate.

[0014] The bottom, middle and top of the end plate of the right water guide seat are respectively provided with a plurality of horizontally arranged pipe holes;

[0015] The right water guide plate is provided with a right bottom water guide shell at the bottom, a right middle water guide shell in the middle, a right top water guide shell, a right plate joint pipe hole and a right series water shell at the top;

[0016] The right water guide plate is embedded in the right water guide seat body and is sealed with the end plate. The end plate covers the openings of the right bottom water guide shell, the right middle water guide shell, the right top water guide shell and the right series water shell and forms the left top water guide cavity, the left middle water guide cavity, the left series water cavity and the left bottom water guide cavity; the right joint pipe hole and a pipe hole on the top constitute the right top pipe hole;

[0017] The left water guide seat comprises a left water guide seat body with a side opening and a left water guide plate.

[0018] The bottom, middle and top of the end plate of the left water guide seat are respectively provided with a plurality of horizontally arranged pipe holes;

[0019] The left water guide plate is provided with a left bottom water guide shell and a left plate joint pipe hole at the bottom, a left middle water guide shell in the middle, a left top water guide shell and a left series water shell at the top;

[0020] The left water guide plate is embedded in the left water guide seat body and is sealed with the end plate. The end 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 a pipe hole at the bottom constitute the left bottom pipe hole.

[0021] The utility model discloses a layered stainless steel heat exchanger which is arranged in layers and water flows from top to bottom, thereby improving heat exchange efficiency; the technical problem of thermal lag of stainless steel is solved by the number of fins; and the heat exchanger is made of stainless steel material and is corrosion-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the present utility model.

[0023] Figure 2 It is a left view of the present utility model.

[0024] Figure 3 It is a right view of the present utility model.

[0025] Figure 4 It is a three-dimensional exploded view of the present utility model.

[0026] Figure 5 This is one of the three-dimensional exploded views of the left water guide seat of the utility model.

[0027] Figure 6 This is the second exploded perspective view of the left water guide seat of the present invention.

[0028] Figure 7 This is one of the three-dimensional exploded views of the right water guide seat of the utility model.

[0029] Figure 8 This is the second exploded perspective view of the right water guide seat of the present invention.

[0030] Figure 9 It is a partial view of the present utility model. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] like Figure 1 、 Figure 4 As shown, a layered stainless steel heat exchanger includes a left water guide seat 1, a right water guide seat 2, a top water pipe group 3, a middle water pipe group 4, a bottom water pipe group 5, a top heat exchange fin group 61, a middle heat exchange fin group and a bottom heat exchange fin group 63.

[0034] The top water pipe group 3, the middle water pipe group 4 and the bottom water pipe group 5 are respectively made of stainless steel pipes, and the left water guide seat 1, the right water guide seat 2, the top heat exchange fin group 61, the middle heat exchange fin group and the bottom heat exchange fin group 63 are respectively made of stainless steel plates. For this reason, the name of the utility model is layered stainless steel heat exchanger; stainless steel material has the characteristics of corrosion resistance, but has the disadvantage of poor thermal conductivity compared to copper, and has the problem of thermal hysteresis;

[0035] The water pipes of the top water pipe group 3, the middle water pipe group 4, and the bottom water pipe group 5 are connected in series through the left water guide seat 1 and the right water guide seat 2, respectively. The top water pipe group 3, the middle water pipe group 4, and the bottom water pipe group 5 are connected in series through the left water guide seat 1 and the right water guide seat 2. The top heat exchange fin group 61, the middle heat exchange fin group, and the bottom heat exchange fin group 63 are respectively arranged on the top water pipe group 3, the middle water pipe group 4, and the bottom water pipe group 5. The number of heat exchange fins in the top heat exchange fin group 61, the middle heat exchange fin group, and the bottom heat exchange fin group 63 decreases from top to bottom. Water flows through the top water pipe group 3 and the middle water pipe group 4, and out of the bottom water pipe group 5.

[0036] This utility model reduces the number of heat exchange fins in the top, middle, and bottom heat exchange fin groups 61, 63, and 64 from top to bottom, gradually reducing the heat exchange area. This results in a lower heat exchange efficiency in the lower water pipes compared to the upper ones. When the water heater is paused, the residual heat in the combustion chamber provides less heat to the lower water pipes. Because the lower water pipes are directly connected to the outlet pipe, the temperature rise of the entire unit during water shut-off is reduced, improving the water heater's comfort and resolving the technical issue of thermal lag. The utility model also offers adjustable and reliable functions.

[0037] As a further improvement of the present invention, the areas of the heat exchange fins of the bottom heat exchange fin group 63, the heat exchange fins of the middle heat exchange fin group and the heat exchange fins of the top heat exchange fin group 61 gradually increase from bottom to top.

[0038] like Figure 2 As shown, the left water guide seat 1 includes a plurality of horizontally arranged left top water guide cavities 11, a plurality of horizontally arranged left middle water guide cavities 12, a left series water cavity 13, a plurality of horizontally arranged left bottom water guide cavities 14, a left bottom pipe hole 15 and a left bottom joint 16. One end of the left series water cavity 13 corresponds to the left bottom water guide cavity 14, and the other end corresponds to the left middle water guide cavity 12. The left bottom water guide cavity 14 and the left bottom pipe hole 15 are in a straight line.

[0039] Two pipe holes are respectively provided on the left top water guide chamber 11, the left middle water guide chamber 12, the left series water chamber 13 and the left bottom water guide chamber 14;

[0040] like Figure 3 As shown, the right water guide seat 2 includes several horizontally arranged right top water guide cavities 21, a right top pipe hole 22, several horizontally arranged right middle water guide cavities 23, a right series water cavity 24, several horizontally arranged right bottom water guide cavities 25 and a right top joint 26. One end of the right series water cavity 24 corresponds to the right middle water guide cavity 23, and the other end corresponds to the right top water guide cavity 21. The right middle water guide cavity and the right top pipe hole 22 are in a straight line.

[0041] Two pipe holes are respectively provided on the right top water guide cavity 21, the right middle water guide cavity 23, the right series water cavity 24 and the right bottom water guide cavity 25;

[0042] One end of the bottom water pipe of the bottom water pipe group 5 is connected to a pipe hole of the left series water chamber 13, the pipe hole of the left bottom water chamber 14, and the left bottom pipe hole 15, and the other end is connected to the pipe hole on the right bottom water chamber 25. The left bottom joint 16 pipe passes through the left bottom pipe hole 15 and is connected to the bottom water pipe; one end of the middle water pipe of the middle water pipe group 4 is connected to the pipe hole of the left middle water chamber 12 and the other pipe hole of the left series water chamber 13, and the other end is connected to the right middle water chamber 2 3 is connected to a tube hole of the right series water chamber 24; one end of the top water pipe of the top water pipe group 3 is connected to the tube hole of the left top water chamber 11, the other end is connected to one end tube hole of the right series water chamber 24, the tube hole of the right top water chamber 21 and one of them passes through the right top tube hole 22, the right top joint 26 is connected to the top water pipe passing through the right top tube hole 22, and the top water pipe of the top water pipe group 3 is fixed to the fixed hole of the fixed tube hole group of the heat exchange fin 6.

[0043] With such a structure, the left bottom water chamber and the right bottom water guide chamber connect the bottom water pipes in the bottom water pipe group 5 in series, the left middle water guide chamber and the right middle water guide chamber connect the middle water pipes in the middle water pipe group 4 in series, the left top water guide chamber and the right top water guide chamber connect the top water pipes in the top water pipe group 3 in series, the left series water chamber connects the bottom water pipe group 5 and the middle water pipe group 4 in series, and the right series water chamber connects the middle water pipe group 4 and the top water pipe group 3 in series.

[0044] As a further improvement of the present invention: the number of top water pipes of the top water pipe group 3 and the number of bottom water pipes of the bottom water pipe group 5 are the same, the number of middle water pipes of the middle water pipe group 4 is one less than the number of top water pipes of the top water pipe group 3 and the number of bottom water pipes of the bottom water pipe group 5; the middle water pipes of the middle water pipe group 4 and the top water pipes of the top water pipe group 3 and the bottom water pipes of the bottom water pipe group 5 are arranged alternately. With such a structure, the heat energy path is increased and the heat exchange efficiency is improved.

[0045] As a further improvement of the present invention: Figure 7 、 Figure 8 As shown, the right water guide seat 2 includes a right water guide seat body 2A with a side opening and a right water guide plate 2B;

[0046] The bottom, middle and top of the end plate of the right water guide seat body 2A with a side opening are respectively provided with a plurality of horizontally arranged pipe holes. The right water guide seat body 2A is formed from a stainless steel plate in one step.

[0047] The right water guide plate 2B is provided with a right bottom water guide shell 251 with a side opening at the bottom, a right middle water guide shell 231 with a side opening in the middle, a right top water guide shell 211 with a side opening at the top, a right plate joint pipe hole, and a right series water shell 241 with a side opening. The right water guide plate 2B is formed from a stainless steel plate in one piece.

[0048] The right water guide plate 2B is embedded in the right water guide seat body 2A and is sealed with the end plate. The end plate covers the right bottom water guide shell 251, the right middle water guide shell 231, the right top water guide shell 21 and the right series water shell 241 to form the right top water guide cavity 21, the right middle water guide cavity 23, the right series water cavity 24 and the right bottom water guide cavity 25; the right plate joint pipe hole and a pipe hole on the top constitute the right top pipe hole 22;

[0049] The left water guide seat 1 includes a left water guide seat body 1A with a side opening and a left water guide plate 1B, and the left water guide seat body 1A and the left water guide plate 1B are made of stainless steel plates;

[0050] The bottom, middle and top of the end plate of the left water guide seat body 1A are respectively provided with a number of horizontally arranged pipe holes; the left water guide seat body 1A is made of stainless steel plate in one step.

[0051] The left water guide plate 1B is provided with a left bottom water guide shell and a left plate joint pipe hole at the bottom, a left middle water guide shell in the middle, a left top water guide shell and a left series water shell at the top; the left water guide plate 1B is formed from a stainless steel plate in one step;

[0052] The left water guide plate 1B is embedded in the left water guide seat body 1A and is sealed with the end plate. The end 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 left top water guide cavity, the left middle water guide cavity 12, the left series water cavity 13 and the left bottom water guide cavity 14; the left plate joint pipe hole and a pipe hole at the bottom constitute the left bottom pipe hole 15.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A layered stainless steel heat exchanger, characterized by: It includes the left water guide seat, the right water guide seat, the top water pipe group, the middle water pipe group, the bottom water pipe group, the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group. The water pipes of the top water pipe group, the middle water pipe group and the bottom water pipe group are connected in series through the left water guide seat and the right water guide seat respectively, and the top water pipe group, the middle water pipe group and the bottom water pipe group are connected in series through the left water guide seat and the right water guide seat; the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group are respectively arranged on the top water pipe group, the middle water pipe group and the bottom water pipe group; the number of heat exchange fins in the top heat exchange fin group, the middle heat exchange fin group and the bottom heat exchange fin group gradually decreases from top to bottom; water flows out from the bottom water pipe group through the top water pipe group and the middle water pipe group.

2. The layered stainless steel heat exchanger according to claim 1, characterized in that: The areas of the heat exchange fins of the bottom heat exchange fin group, the heat exchange fins of the middle heat exchange fin group and the heat exchange fins of the top heat exchange fin group gradually increase from bottom to top.

3. The layered stainless steel heat exchanger according to claim 1, characterized in that: The left water guide seat includes a left top water guide cavity, a left middle water guide cavity, a left series water cavity, a left bottom water guide cavity, a left bottom pipe hole and a left bottom joint, one end of the left series water cavity corresponds to the left bottom water guide cavity, and the other end corresponds to the left middle water guide cavity, and the left bottom water guide cavity and the left bottom pipe hole are in a straight line; Two pipe holes are respectively provided on the left top water guide cavity, the left middle water guide cavity, the left series water cavity and the left bottom water guide cavity; The right water guide seat includes a right top water guide cavity, a right top pipe hole, a right middle water guide cavity, a right series water cavity, a right bottom water guide cavity and a right top joint, one end of the right series water cavity corresponds to the right middle water guide cavity, and the other end corresponds to the right top water guide cavity, and the right middle water guide cavity and the right top pipe hole are in a straight line; Two pipe holes are respectively provided on the right top water guide cavity, the right middle water guide cavity, the right series water cavity and the right bottom water guide cavity; One end of the bottom water pipe of the bottom water pipe group is connected to a pipe hole of the left series water cavity, the pipe hole of the left bottom water pipe cavity and cooperates with the left bottom pipe hole, and the other end is connected to the pipe hole on the right bottom water pipe cavity, and the left bottom joint pipe passes through the left bottom pipe hole and is connected to the bottom water pipe; one end of the middle water pipe of the middle water pipe group is connected to the pipe hole of the left middle water pipe cavity and the other pipe hole of the left series water cavity, and the other end is connected to the pipe hole of the right middle water pipe cavity and a pipe hole of the right series water cavity; one end of the top water pipe of the top water pipe group is connected to the pipe hole of the left top water pipe cavity, and the other end is connected to one end pipe hole of the right series water cavity, the pipe hole of the right top water pipe cavity and the right top pipe hole, the right top joint pipe is connected to the top water pipe passing through the right top pipe hole, and the top water pipe of the top water pipe group is fixed to the fixed hole of the fixed pipe hole group of the heat exchange fin.

4. The layered stainless steel heat exchanger according to claim 3, characterized in that: The number of top water pipes in the top water pipe group is the same as the number of bottom water pipes in the bottom water pipe group, 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 bottom water pipes in the bottom water pipe group.

5. The layered stainless steel heat exchanger according to claim 3, characterized in that: The right water guide seat comprises a right water guide seat body with a side opening and a right water guide plate. The bottom, middle and top of the end plate of the right water guide seat are respectively provided with a plurality of horizontally arranged pipe holes; The right water guide plate is provided with a right bottom water guide shell at the bottom, a right middle water guide shell in the middle, a right top water guide shell, a right plate joint pipe hole and a right series water shell at the top; The right water guide plate is embedded in the right water guide seat body and is sealed with the end plate. The end plate covers the openings of the right bottom water guide shell, the right middle water guide shell, the right top water guide shell and the right series water shell and forms the left top water guide cavity, the left middle water guide cavity, the left series water cavity and the left bottom water guide cavity; the right joint pipe hole and a pipe hole on the top constitute the right top pipe hole; The left water guide seat comprises a left water guide seat body with a side opening and a left water guide plate. The bottom, middle and top of the end plate of the left water guide seat are respectively provided with a plurality of horizontally arranged pipe holes; The left water guide plate is provided with a left bottom water guide shell and a left plate joint pipe hole at the bottom, a left middle water guide shell in the middle, a left top water guide shell and a left series water shell at the top; The left water guide plate is embedded in the left water guide seat body and is sealed with the end plate. The end 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 a pipe hole at the bottom constitute the left bottom pipe hole.

Images