A hot air heat exchanger

Abstract

The utility model discloses a hot -blast heat exchanger, it includes frame and heat exchange core, and the outer surface of heat exchange core has the heat exchange gap, and the inside of heat exchange core is equipped with the board course flow channel isolated with heat exchange gap, and the end of heat exchange core is equipped with the medium inlet pipe and medium outlet pipe of intercommunication board course flow channel, and the medium inlet pipe and medium outlet pipe all pass through the lateral surface of frame to show in the frame outside, and the medium inlet pipe and medium outlet pipe all are welded fixed with frame, and the inner wall of frame is equipped with several groups of the support group of transverse interval distribution, and every support group all are covered in the outer surface of heat exchange core to support heat exchange core, and at least a group of support group support positioning heat exchange core middle part outer surface, so that also will not appear heat exchange core middle part downward bending deformation phenomenon after long -term use, guarantees the heat exchange effect and heat exchange quality of heat exchange core, the frame is equipped with the pull rod of several transverse distribution and is used for strengthening its structural strength and is fixed in the wear, and the pull rod is also worn in the support group, and forms the support to the support group.

Description

Technical fields:

[0001] This utility model relates to the field of heat exchanger technology, and specifically to a structurally stable hot air heat exchanger. Background technology:

[0002] Chinese utility model patent application number 202421320559.8 discloses a high-efficiency heat storage air heat exchanger, which includes a mounting frame and an inlet pipe. Two inlet pipes and two outlet pipes are provided on the side of the mounting frame. A high-efficiency heat storage heat exchange component is disposed inside the mounting frame, and a quick-release assembly is provided on the outer surface of the high-efficiency heat storage heat exchange component. The high-efficiency heat storage heat exchange component includes two sets of heat exchangers disposed inside the mounting frame. Multiple fins are provided on the outer surface of each heat exchanger, and the fins abut against the inner wall of the mounting frame. Two mounting plates are fixedly connected to the outer surface of each heat exchanger, and the mounting plates abut against the inner wall of the mounting frame. The quick-release assembly includes multiple insertion holes opened inside the mounting frame and mounting plates. Insert rods are engaged inside the insertion holes, one end of each insertion rod is fixedly connected to a first magnet, and a second magnet is disposed inside the insertion hole. In use, the mounting bracket is installed to the desired location using the fixing bolts and threaded holes in the connecting plate. After installation, the mounting plates on the surface of a set of heat exchangers are aligned with the mounting bracket. Then, the insertion holes on the mounting plates are aligned with the insertion holes in the mounting bracket. The insertion rod is engaged with the insertion hole to install the heat exchanger. When the insertion rod is engaged with the insertion hole, it will cause the first and second magnets to be magnetically connected, thereby strengthening the firmness and stability of the installation between the heat exchanger and the mounting bracket. The other set of heat exchangers is installed in the same way.

[0003] The aforementioned efficient heat exchanger for regenerative air has the following shortcomings: The heat exchanger is installed only by fixing mounting plates on both sides, inserting rods into holes within the mounting frame, and finally magnetically connected by a first and second magnet. However, this heat exchanger has a relatively long lateral length, and with only its two ends fixed to the mounting frame while the middle section lacks any support, it is prone to downward bending and deformation in the middle after prolonged use, affecting heat exchange efficiency and quality.

[0004] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a hot air heat exchanger with a stable structure.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A hot air heat exchanger includes a frame and a heat exchange core installed within the frame. The outer surface of the heat exchange core has a heat exchange gap for air passage. Inside the heat exchange core, a plate-side flow channel isolated from the heat exchange gap is provided. At the end of the heat exchange core, a medium inlet pipe and a medium outlet pipe communicating with the plate-side flow channel are provided. Both the medium inlet pipe and the medium outlet pipe pass through the side of the frame and are exposed outside the frame. Both the medium inlet pipe and the medium outlet pipe are welded and fixed to the frame. The inner wall of the frame is provided with several sets of laterally spaced support members. Each support member set covers the outer surface of the heat exchange core to support it, and at least one set of support members supports and positions the middle outer surface of the heat exchange core. Several laterally distributed tie rods are fixed inside the frame to enhance its structural strength. These tie rods also pass through the support member sets and provide support to the support member sets.

[0007] Furthermore, in the above technical solution, each support component group includes a first support component and a second support component disposed on both sides of the inner wall of the frame, and a third support component and a fourth support component disposed on both sides of the lower inner wall of the frame. The number of tie rods is four, which pass through the first support component, the second support component, the third support component and the fourth support component in a corresponding manner to provide support for the first support component, the second support component, the third support component and the fourth support component.

[0008] Furthermore, in the above technical solution, the first support member, the second support member, the third support member and the fourth support member all include a main body and a support part fixed on the main body. The main body has a positioning hole for the pull rod to pass through, and the main body is in contact with the frame for positioning. The support part wraps around the outer surface of the heat exchange core to support and position the outer surface of the heat exchange core.

[0009] Furthermore, in the above technical solution, the inner wall of the frame is provided with a positioning groove, and the main body is partially embedded in the positioning groove to form a positioning; or, the main body contacts and is welded to the inner wall of the frame.

[0010] Furthermore, in the above technical solution, the heat exchange core is cylindrical, the support part is arc-shaped, and the support part is supported and positioned against the outer surface of the heat exchange core by an arc-shaped gasket.

[0011] Furthermore, in the above technical solution, the support components are arranged in four groups, which are equally spaced outside the heat exchange core.

[0012] Furthermore, in the above technical solution, both ends of the pull rod are provided with threaded sections, which extend beyond the side of the frame. A first nut is screwed onto the threaded section, and the first nut contacts the side of the frame to lock both ends of the pull rod to the two sides of the frame. A second nut is also screwed onto the end of the threaded section to prevent the first nut from coming out.

[0013] Furthermore, in the above technical solution, the heat exchange core includes a plate bundle formed by welding multiple plate groups. Each plate group includes two plates, each plate having two vertically distributed circular holes, and the plate surface having corrugated protrusions. Every two plates are welded together through the corrugated protrusions on their surfaces and the corresponding edges of the circular holes to form the plate group. The plate group has multiple first corrugated gaps forming heat exchange gaps inside. Every two plate groups are welded together through their corresponding outer edges to form the plate bundle, and multiple second corrugated gaps forming plate flow channels are formed between the two plate groups. The second corrugated gaps between adjacent plate groups are connected through circular holes.

[0014] Furthermore, in the above technical solution, the hot air heat exchanger consists of two sets, which are symmetrically overlapped and fixed, and the lower frame of the lower hot air heat exchanger is provided with a support foot; each hot air heat exchanger is also provided with a lifting lug on its outer side, and the lifting lug is provided with a hanging hole.

[0015] Furthermore, in the above technical solution, the support foot is provided with a locking hole, which is locked to the installation object with bolts; the two sets of hot air heat exchangers are locked together by flanges and bolts.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention provides several sets of laterally spaced support members on the inner wall of the frame to support the heat exchange core, and at least one set of support members supports and positions the outer surface of the middle part of the heat exchange core, thereby stably supporting and positioning the heat exchange core within the frame. Even if the lateral length of the heat exchange core is long, because the middle part of the heat exchange core is supported, there will be no downward bending or deformation of the middle part of the heat exchange core after long-term use, ensuring the heat exchange effect and heat exchange quality of the heat exchange core. Furthermore, several laterally distributed tie rods are fixed inside the frame to enhance its structural strength. These tie rods also pass through the support member sets and provide support to the support member sets, thereby enabling the support member sets to stably support and position the heat exchange core. At the same time, these tie rods also enhance the structural strength of the frame, making the frame structure more stable, which is beneficial for better supporting and positioning the support member sets, improving product quality and service life. Attached image description:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the present invention from another angle;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a cross-sectional view from another perspective of this utility model;

[0021] Figure 5 This is a partial structural diagram of the heat exchange core in this utility model. Detailed implementation method:

[0022] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0023] See Figure 1-5 As shown, a hot air heat exchanger includes a frame 1 and a heat exchange core 2 installed within the frame 1. The outer surface of the heat exchange core 2 has a heat exchange gap for airflow. Inside the heat exchange core 2, a plate-side flow channel 200 isolated from the heat exchange gap is provided. At the end of the heat exchange core 2, a medium inlet pipe 21 and a medium outlet pipe 22 are provided, connecting the plate-side flow channel 200. Both the medium inlet pipe 21 and the medium outlet pipe 22 pass through the side of the frame 1 and are exposed outside the frame 1. Both the medium inlet pipe 21 and the medium outlet pipe 22 are welded and fixed to the frame 1, thus fixing the heat exchange core 2 within the frame 1. During operation, the medium to be heated is introduced into the medium inlet pipe 21 and enters the plate-side flow channel 200 within the heat exchange core 2. Hot air passes through the heat exchange gap on the outer surface of the heat exchange core 2. At this time, the hot air in the heat exchange gap exchanges heat with the medium within the plate-side flow channel 200, thereby heating the medium and increasing its temperature. Alternatively, the medium to be cooled can be introduced into the medium inlet pipe 21 and into the plate flow channel 200 inside the heat exchange core 2. Cold air passes through the heat exchange gap on the outer surface of the heat exchange core 2. At this time, the cold air in the heat exchange gap exchanges heat with the medium in the plate flow channel 200, and the medium can be cooled by the cold air, so that the temperature of the medium is lowered.

[0024] To ensure the heat exchange core 2 is stably installed within the frame 1, the following design is implemented: The inner wall of the frame 1 is provided with several sets of laterally spaced support members. Each support member group covers the outer surface of the heat exchange core 2 to support it, and at least one set of support members supports and positions the outer surface of the middle portion of the heat exchange core 2. Several laterally distributed tie rods 3 are fixed inside the frame 1 to enhance its structural strength. These tie rods 3 also pass through the support member groups and provide support to them. In other words, this invention provides several sets of laterally spaced support members on the inner wall of the frame 1 to support the heat exchange core 2, and at least one set of support members supports and positions the outer surface of the middle portion of the heat exchange core 2. This ensures that the heat exchange core 2 is stably supported and positioned within the frame 1. Even if the lateral length of the heat exchange core 2 is long, the middle portion of the heat exchange core 2 is supported, preventing downward bending and deformation after long-term use, thus guaranteeing the heat exchange effect and quality of the heat exchange core 2. In addition, several horizontally distributed tie rods 3 are fixed inside the frame 1 to enhance its structural strength. The tie rods 3 are also inserted into the support assembly and provide support to the support assembly, thereby enabling the support assembly to stably support and position the heat exchange core 2. At the same time, the tie rods 3 can also enhance the structural strength of the frame 1, making the frame 1 structure more stable, which is conducive to better supporting and positioning the support assembly, improving product quality and service life.

[0025] Each support assembly surrounds the outer surface of the heat exchange core 2, forming a ring support, which provides a relatively ideal support and positioning effect.

[0026] Specifically, each support assembly includes a first support 41 and a second support 42 disposed on both sides of the inner wall of the frame 1, and a third support 43 and a fourth support 44 disposed on both sides of the lower inner wall of the frame 1. The first support 41 and the second support 42 are in contact with the upper sides of the heat exchange core 2, and the third support 43 and the fourth support 44 are in contact with the lower sides of the heat exchange core 2, thereby forming a ring support structure to achieve ring support, and its support positioning effect is relatively ideal.

[0027] The first support member 41, the second support member 42, the third support member 43, and the fourth support member 44 each include a main body 401 and a support portion 402 fixed to the main body 401. The main body 401 has a positioning hole 403 through which the pull rod 3 passes, and the main body 401 is in contact with and positioned against the frame 1. The support portion 402 wraps around the outer surface of the heat exchange core 2 to support and position the outer surface of the heat exchange core 2. The pull rod 3 passes through the positioning hole 403 of the main body 401 to be positioned with the main body 401. In some embodiments, two nuts are spirally arranged on the pull rod 3, and the relative positions of the two nuts are adjusted by spiraling relative to the pull rod 3 to press against the two sides of the main body 401, thereby locking the main body 401 onto the pull rod 3 to achieve stable positioning.

[0028] The positioning methods of the main body 401 and the frame 1 include at least the following three:

[0029] The first positioning method: the end face of the main body 401 is set as a first plane, which contacts the inner wall plane of the frame 1 to form a stable support. The tie rod 3 can be positioned relative to the main body 401. The first support member 41, the second support member 42, the third support member 43 and the fourth support member 44 are all embedded between the heat exchange core 2 and the frame 1. Under the action of multiple factors, the main body 401 can also be positioned between the heat exchange core 2 and the frame 1, and achieve stable support and positioning for the heat exchange core 2.

[0030] The second positioning method is based on the first positioning method and adds the following design: the inner wall of the frame 1 is provided with a positioning groove, and the main body 401 is partially embedded in the positioning groove to form a positioning. The positioning effect is better and it is easier to disassemble for maintenance.

[0031] The third positioning method is based on the first positioning method, and the main body 401 is also made in contact with and welded to the inner wall of the frame 1. Its structure is the most stable, but it is not conducive to disassembly for maintenance.

[0032] In this embodiment, the heat exchange core 2 is cylindrical, the support part 402 is arc-shaped, and the support part 402 is supported and positioned with the outer surface of the heat exchange core 2 by the arc-shaped gasket 404, which has an excellent positioning effect.

[0033] The number of the pull rods 3 is four, which pass through the first support member 41, the second support member 42, the third support member 43 and the fourth support member 44 in a corresponding manner to provide support for the first support member 41, the second support member 42, the third support member 43 and the fourth support member 44.

[0034] The specific assembly structure of the pull rod 3 and the frame 1 is as follows: both ends of the pull rod 3 are provided with threaded sections 31, which extend beyond the side of the frame 1. The threaded sections 31 are screwed with a first nut 32, which contacts the side of the frame 1 to lock both ends of the pull rod 3 to the two sides of the frame 1. Furthermore, the end of the threaded section 31 is screwed with a second nut 33 to prevent the first nut 32 from coming out, so that the pull rod 3 is stably installed in the frame 1.

[0035] The support components consist of four groups, which are evenly distributed outside the heat exchange core 2.

[0036] The specific structure of the heat exchange core 2 is described in detail below: The heat exchange core 2 includes a plate bundle formed by welding multiple plate groups 201. Each plate group 201 includes two plates 204. Each plate 204 has two vertically distributed circular holes 205, and the surface of the plate 204 has corrugated protrusions 203. Each pair of plates 204 are welded together with the corrugated protrusions 203 and the edges of the circular holes 205 to form the plate group 201. The plate group 201 has multiple first corrugated gaps 206 forming heat exchange gaps inside. Each pair of plate groups 201 are welded together with their outer edges 202 to form the plate bundle. Multiple second corrugated gaps 207 forming plate flow channels 200 are formed between the two plate groups 201. The second corrugated gaps between adjacent plate groups 201 are connected through the circular holes 205.

[0037] The plate 204 is a stainless steel plate.

[0038] The corrugated protrusion 203 has a corrugated bending angle of 60°-180°. In this embodiment, the plate 204 is a herringbone pattern plate or a corrugated pattern plate. Both herringbone pattern plates and corrugated pattern plates have a "static stirring" effect, which can form turbulence at a very low Reynolds number. They have a low fouling coefficient, which greatly reduces the scaling rate, has high heat transfer efficiency, and has a significant cooling effect.

[0039] The hot air heat exchanger consists of two sets, which are symmetrically overlapped and fixed. The lower frame 1 of the lower hot air heat exchanger is provided with a support foot 11. Each hot air heat exchanger is also provided with a lifting lug 12 on its outer side. The lifting lug 12 is provided with a hanging hole 121, which makes it easy for the lifting tool to hook the lifting lug 12 for hoisting this utility model.

[0040] The support foot 11 is provided with a locking hole 111, which is locked with bolts to the installation object, so that the present invention is stably positioned on the installation object (such as floor, bracket, etc.); the two sets of hot air heat exchangers are locked together by flange 101 and bolts 102, and its installation structure is extremely stable.

[0041] In summary, this invention provides several sets of laterally spaced support members on the inner wall of the frame 1 to support the heat exchange core 2. At least one set of support members supports and positions the outer surface of the middle portion of the heat exchange core 2, thus stably supporting and positioning the heat exchange core 2 within the frame 1. Even if the heat exchange core 2 has a long lateral length, the support at the middle prevents downward bending and deformation of the middle portion of the heat exchange core 2 after long-term use, ensuring the heat exchange effect and quality of the heat exchange core 2. Furthermore, several laterally distributed tie rods 3 are fixed inside the frame 1 to enhance its structural strength. These tie rods 3 also pass through the support member sets and provide support to the support member sets, enabling the support member sets to stably support and position the heat exchange core 2. Simultaneously, the tie rods 3 also enhance the structural strength of the frame 1, making the frame 1 more stable and facilitating better support and positioning of the support member sets, thereby improving product quality and service life.

[0042] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A hot air heat exchanger, comprising a frame (1) and a heat exchange core (2) installed within the frame (1), the outer surface of the heat exchange core (2) having a heat exchange gap for air to pass through, the heat exchange core (2) having a plate flow channel (200) isolated from the heat exchange gap inside, the heat exchange core (2) having a medium inlet pipe (21) and a medium outlet pipe (22) communicating with the plate flow channel (200) at its end, the medium inlet pipe (21) and the medium outlet pipe (22) both passing through the side of the frame (1) to be exposed outside the frame (1), and the medium inlet pipe (21) and the medium outlet pipe (22) both being welded and fixed to the frame (1), characterized in that: The inner wall of the frame (1) is provided with several sets of horizontally spaced support members. Each support member group covers the outer surface of the heat exchange core (2) to support the heat exchange core (2), and at least one set of support members supports and positions the outer surface of the middle part of the heat exchange core (2). Several horizontally distributed tie rods (3) are fixed inside the frame (1) to enhance its structural strength. The tie rods (3) are also inserted into the support member groups and provide support to the support member groups.

2. A hot air heat exchanger according to claim 1, characterized in that: Each support assembly includes a first support (41) and a second support (42) disposed on both sides of the upper inner wall of the frame (1), and a third support (43) and a fourth support (44) disposed on both sides of the lower inner wall of the frame (1). There are four tie rods (3), which pass through the first support (41), the second support (42), the third support (43) and the fourth support (44) respectively to provide support for the first support (41), the second support (42), the third support (43) and the fourth support (44).

3. A hot air heat exchanger according to claim 2, characterized in that: The first support member (41), the second support member (42), the third support member (43) and the fourth support member (44) each include a main body (401) and a support part (402) fixed on the main body (401). The main body (401) has a positioning hole (403) through which the pull rod (3) passes, and the main body (401) is in contact with the frame (1) for positioning. The support part (402) wraps around the outer surface of the heat exchange core (2) to support and position the outer surface of the heat exchange core (2).

4. A hot air heat exchanger according to claim 3, characterized in that: The inner wall of the frame (1) is provided with a positioning groove, and the main body (401) is partially embedded in the positioning groove to form a positioning; or, the main body (401) contacts and is welded to the inner wall of the frame (1).

5. A hot air heat exchanger according to any one of claims 3-4, characterized in that: The heat exchange core (2) is cylindrical, the support part (402) is arc-shaped, and the support part (402) is supported and positioned by the arc-shaped gasket (404) on the outer surface of the heat exchange core (2).

6. A hot air heat exchanger according to claim 5, characterized in that: The support components are in four groups, which are evenly distributed outside the heat exchange core (2).

7. A hot air heat exchanger according to any one of claims 2-4, characterized in that: Both ends of the pull rod (3) are provided with threaded sections (31), which extend beyond the side of the frame (1). The threaded section (31) is screwed with a first nut (32), which contacts the side of the frame (1) to lock both ends of the pull rod (3) to the two sides of the frame (1). The end of the threaded section (31) is also screwed with a second nut (33) to prevent the first nut (32) from coming out.

8. A hot air heat exchanger according to any one of claims 1-4, characterized in that: The heat exchange core (2) includes a plate bundle formed by welding multiple plate groups (201). Each plate group (201) includes two plates (204). The plates (204) are provided with two circular holes (205) distributed vertically, and the surface of the plates (204) forms corrugated protrusions. Each pair of plates (204) are welded together through the corrugated protrusions on their surfaces and the corresponding edges of the circular holes (205) to form the plate group (201). The plate group (201) has multiple first corrugated gaps (206) forming heat exchange gaps inside. Each pair of plate groups (201) is welded together through their corresponding outer edges (202) to form the plate bundle. Multiple second corrugated gaps (207) forming plate flow channels (200) are formed between the two plate groups (201). The second corrugated gaps between adjacent plate groups (201) are connected through the circular holes (205).

9. A hot air heat exchanger according to any one of claims 1-4, characterized in that: The hot air heat exchanger consists of two sets, which are symmetrically overlapped and fixed, and the frame (1) of the lower hot air heat exchanger is provided with a support foot (11); each hot air heat exchanger is also provided with a lifting lug (12) on the outside, and the lifting lug (12) is provided with a hanging hole (121).

10. A hot air heat exchanger according to claim 9, characterized in that: The support foot (11) is provided with a locking hole (111), which is used to lock the bolt to the installation object; the two sets of hot air heat exchangers are locked together by flange (101) and bolt (102).

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