Energy-saving heat exchanger

Abstract

The utility model discloses an energy-saving heat exchanger which comprises a frame body, and a plurality of penetrating holes are formed in the front side and the rear side opposite to each other of the frame body. The heat exchange pipes penetrate through the corresponding through holes, a plurality of heat exchange grooves are formed in the outer walls of the heat exchange pipes, and the heat exchange grooves are circumferentially and uniformly distributed around the axes of the heat exchange pipes; the ends of the corresponding heat exchange pipes are communicated through the communicating structures; a plurality of heat exchange holes corresponding to the heat exchange pipes are formed in the heat exchange pieces, the heat exchange pipes penetrate through the corresponding heat exchange holes, heat exchange rings are fixed to the heat exchange holes, a plurality of heat exchange protrusions are fixed to the inner walls of the heat exchange rings, and the heat exchange protrusions are connected with the heat exchange grooves in the corresponding heat exchange pipes in an inserted mode. Due to the fact that the heat exchange protrusions on the heat exchange rings are connected with the heat exchange grooves in the heat exchange pipes in the inserted mode, the contact area of the heat exchange rings and the heat exchange pipes can be increased, more heat on the heat exchange pieces can be conducted to liquid in the heat exchange pipes, the heat exchange efficiency is improved, and more energy is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas water heaters, and in particular relates to an energy-saving heat exchanger. Background Art

[0002] The working principle of a gas water heater is to generate high-temperature flue gas through a burner, and then transfer the heat in the flue gas to the water flowing through the heat exchanger through a heat exchanger, thereby generating hot water. Therefore, the heat exchange efficiency of the heat exchanger is one of the important technical indicators of the water heater. At present, most of the heat exchangers on the market are equipped with a large number of heat exchange plates in the heat exchanger, which absorb and transfer heat through a large number of parallel heat exchange plates.

[0003] However, the contact area between the heat exchanger fins and the heat exchanger tubes is small, which affects the heat exchange efficiency and increases energy consumption. Utility Model Content

[0004] The utility model aims to provide an energy-saving heat exchanger, which can increase the heat exchange efficiency between heat exchange plates and heat exchange tubes.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an energy-saving heat exchanger, comprising:

[0006] A frame, wherein a plurality of through holes are provided on the front and rear sides of the frame;

[0007] A plurality of heat exchange tubes, each of which passes through a corresponding through hole, and a plurality of heat exchange grooves are arranged on an outer wall of the heat exchange tube, and the plurality of heat exchange grooves are evenly distributed around the circumference of the axis of the heat exchange tube;

[0008] Two connecting structures, which are respectively arranged at the front and rear sides of the frame, and connect the ends of the corresponding heat exchange tubes;

[0009] A plurality of heat exchange plates are provided with a plurality of heat exchange holes corresponding to the heat exchange tubes, the heat exchange tubes pass through the corresponding heat exchange holes, a heat exchange ring is fixed on the heat exchange hole, a plurality of heat exchange protrusions are fixed on the inner wall of the heat exchange ring, and the heat exchange protrusions are plugged into the heat exchange grooves on the corresponding heat exchange tubes.

[0010] Furthermore, it also includes a guide structure, which corresponds one-to-one to the heat exchange ring. The guide structure includes two guide half rings, which are fixed on the heat exchange plate. The two guide half rings are respectively located on the left and right sides of the heat exchange ring. A guide inlet is formed between the lower ends of the two guide half rings, and a guide outlet is formed between the upper ends of the two guide half rings.

[0011] Furthermore, the guide structure also includes two guide rods, which are respectively fixedly connected to the lower ends of the two guide semi-rings, and the two guide rods are inclined from top to bottom toward the outer side of the guide inlet.

[0012] Furthermore, a plurality of external heat exchange grooves are provided on the outer wall of the heat exchange ring, and the plurality of external heat exchange grooves are evenly distributed around the circumference of the axis of the heat exchange ring.

[0013] Furthermore, the inner wall of the heat exchange tube is provided with a plurality of inner grooves, and the plurality of inner grooves are evenly distributed around the circumference of the axis of the heat exchange ring.

[0014] Furthermore, the inner grooves and the heat exchange grooves are arranged alternately.

[0015] Furthermore, the heat exchange tubes are arranged in three rows, the first row and the third row are arranged with four heat exchange tubes, the second row is arranged with three heat exchange tubes, and the second row is staggered with the first row and the third row of heat exchange tubes.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) Since the heat exchange protrusions on the heat exchange ring are plugged into the heat exchange grooves on the heat exchange tube, the contact area between the heat exchange ring and the heat exchange tube can be increased, so that more heat on the heat exchange plate can be transferred to the liquid in the heat exchange tube, thereby increasing the heat exchange efficiency, reducing energy consumption, and saving more energy;

[0018] (2) During the heating process, the flue gas rises and enters the guide inlet, then enters the guide channel between the guide half ring and the heat exchange ring, and finally flows out from the guide outlet. In this way, the flue gas can fully contact the heat exchange ring, thereby increasing the heat exchange efficiency;

[0019] (3) The external heat exchange groove can increase the area of ​​the outer wall of the heat exchange ring, thereby increasing the contact area between the flue gas and the heat exchange ring, and can also increase the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the energy-saving heat exchanger of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the heat exchanger;

[0022] Figure 3 for Figure 2 A partial enlarged view of point I in the middle;

[0023] Figure 4 It is a structural schematic diagram of the connection between the heat exchange tube and the heat exchange plate;

[0024] Figure 5 It is a cross-sectional view of the connection between the heat exchange tube and the heat exchange plate.

[0025] In the figure: 1. frame; 2. heat exchange tube; 3. heat exchange groove; 4. connecting structure; 5. heat exchange plate; 6. heat exchange hole; 7. heat exchange ring; 8. heat exchange protrusion; 9. external heat exchange groove; 10. flow guide structure; 11. flow guide half ring; 12. flow guide inlet; 13. flow guide outlet; 14. flow guide rod; 15. inner groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution for an energy-saving heat exchanger.

[0028] An energy-saving heat exchanger, comprising:

[0029] A frame 1, wherein a plurality of through holes are provided on the front and rear sides of the frame 1;

[0030] A plurality of heat exchange tubes 2, the heat exchange tubes 2 pass through corresponding perforations, a plurality of heat exchange grooves 3 are provided on the outer wall of the heat exchange tubes 2, and the plurality of heat exchange grooves 3 are evenly distributed around the axis of the heat exchange tubes 2;

[0031] Two connecting structures 4, which are respectively arranged at the front and rear sides of the frame 1, and the connecting structures 4 connect the ends of the corresponding heat exchange tubes 2, so that all the heat exchange tubes 2 form a continuous flow channel;

[0032] A plurality of heat exchange plates 5 are provided with a plurality of heat exchange holes 6 corresponding to the heat exchange tubes 2. The heat exchange tubes 2 pass through the corresponding heat exchange holes 6. A heat exchange ring 7 is fixed on the heat exchange hole 6. A plurality of heat exchange protrusions 8 are fixed on the inner wall of the heat exchange ring 7. The heat exchange protrusions 8 are plugged into the corresponding heat exchange grooves 3 on the heat exchange tubes 2.

[0033] Since the heat exchange protrusions 8 on the heat exchange ring 7 are plugged into the heat exchange grooves 3 on the heat exchange tube 2, the contact area between the heat exchange ring 7 and the heat exchange tube 2 can be increased, so that more heat on the heat exchange plate 5 can be transferred to the liquid in the heat exchange tube 2, thereby increasing the heat exchange efficiency, reducing energy consumption, and saving more energy.

[0034] like Figure 3As shown, the energy-saving heat exchanger also includes a flow guiding structure 10, which corresponds to the heat exchange ring 7 one by one. The flow guiding structure 10 includes two flow guiding half rings 11, which are fixed on the heat exchange plate 5. The two flow guiding half rings 11 are respectively located on the left and right sides of the heat exchange ring 7. A flow guiding inlet 12 is formed between the lower ends of the two flow guiding half rings 11, and a flow guiding outlet 13 is formed between the upper ends of the two flow guiding half rings 11.

[0035] like Figure 3 As shown, during the heating process, the flue gas rises, enters the guide inlet 12, then enters the guide channel between the guide half ring 11 and the heat exchange ring 7, and finally flows out from the guide outlet 13, so that the flue gas can fully contact the heat exchange ring 7, thereby increasing the heat exchange efficiency.

[0036] like Figure 3 As shown, the guide structure 10 further includes two guide rods 14, which are respectively fixedly connected to the lower ends of the two guide half rings 11, and the two guide rods 14 are arranged obliquely from top to bottom toward the outside of the guide inlet 12. The two guide rods 14 can guide the smoke into the guide inlet 12, playing a guiding role.

[0037] like Figure 3 As shown, a plurality of external heat exchange grooves 9 are provided on the outer wall of the heat exchange ring 7, and the plurality of external heat exchange grooves 9 are evenly distributed around the axis of the heat exchange ring 7. The external heat exchange grooves 9 can increase the area of ​​the outer wall of the heat exchange ring 7, thereby increasing the contact area between the flue gas and the heat exchange ring 7, and can also increase the heat exchange efficiency.

[0038] like Figure 5 As shown, the inner wall of the heat exchange tube 2 is provided with a plurality of inner grooves 15, and the plurality of inner grooves 15 are evenly distributed around the axis of the heat exchange ring 7. The inner grooves 15 can increase the contact area between the water in the heat exchange tube 2 and the inner wall of the heat exchange tube 2, so that the water in the heat exchange tube 2 is heated faster. The inner grooves 15 and the heat exchange grooves 3 are arranged alternately to avoid the inner grooves 15 and the heat exchange grooves 3 being located on the same side, resulting in the wall between the inner grooves 15 and the heat exchange grooves 3 being too thin, thereby affecting the strength of the heat exchange tube 2.

[0039] The heat exchange tubes 2 are arranged in three rows, the first row and the third row are arranged with four heat exchange tubes 2, the second row is arranged with three heat exchange tubes 2, and the second row is arranged alternately with the first row and the third row of heat exchange tubes 2, such as Figure 2 As shown, the heat exchange holes 6 on the heat exchange fins 5 are arranged corresponding to the heat exchange tubes 2 .

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving heat exchanger, It is characterized in that include: A frame, wherein a plurality of through holes are provided on the front and rear sides of the frame; A plurality of heat exchange tubes, each of which passes through a corresponding through hole, and a plurality of heat exchange grooves are arranged on an outer wall of the heat exchange tube, and the plurality of heat exchange grooves are evenly distributed around the circumference of the axis of the heat exchange tube; Two connecting structures, which are respectively arranged at the front and rear sides of the frame, and connect the ends of the corresponding heat exchange tubes; A plurality of heat exchange plates are provided with a plurality of heat exchange holes corresponding to the heat exchange tubes, the heat exchange tubes pass through the corresponding heat exchange holes, a heat exchange ring is fixed on the heat exchange hole, a plurality of heat exchange protrusions are fixed on the inner wall of the heat exchange ring, and the heat exchange protrusions are plugged into the heat exchange grooves on the corresponding heat exchange tubes.

2. An energy-saving heat exchanger according to claim 1, It is characterized in that It also includes a guide structure, which corresponds to the heat exchange ring one by one. The guide structure includes two guide half rings, which are fixed on the heat exchange plate. The two guide half rings are respectively located on the left and right sides of the heat exchange ring. A guide inlet is formed between the lower ends of the two guide half rings, and a guide outlet is formed between the upper ends of the two guide half rings.

3. An energy-saving heat exchanger according to claim 2, It is characterized in that The guide structure further comprises two guide rods, which are respectively fixedly connected to the lower ends of the two guide semi-rings, and the two guide rods are arranged obliquely from top to bottom toward the outer side of the guide inlet.

4. An energy-saving heat exchanger according to claim 1, It is characterized in that A plurality of external heat exchange grooves are arranged on the outer wall of the heat exchange ring, and the plurality of external heat exchange grooves are evenly distributed around the circumference of the axis of the heat exchange ring.

5. The energy-saving heat exchanger according to claim 1, It is characterized in that The inner wall of the heat exchange tube is provided with a plurality of inner grooves, and the plurality of inner grooves are evenly distributed around the circumference of the axis of the heat exchange ring.

6. An energy-saving heat exchanger according to claim 5, It is characterized in that The inner grooves and the heat exchange grooves are arranged alternately.

7. An energy-saving heat exchanger according to claim 2, It is characterized in that The heat exchange tubes are arranged in three rows, the first row and the third row are arranged with four heat exchange tubes, the second row is arranged with three heat exchange tubes, and the second row is staggered with the first row and the third row.

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