Heat recovery device

Abstract

The utility model discloses a heat recovery device which comprises at least one pair of cover cylinders, each cover cylinder comprises a cover body, a containing cavity is formed in each cover body, a plurality of heat exchange pipes are installed between the upper wall and the lower wall of each cover body, the upper ends and the lower ends of the heat exchange pipes penetrate out of the upper wall and the lower wall of each cover body respectively, the heat exchange pipes are vertically through in the axial direction, and each cover body is provided with an air inlet and an air outlet. The air inlets and the air outlets are located in the two sides of the cover bodies, the air inlets and the air outlets are distributed in an up-down staggered mode, and in the two cover cylinders in the same pair, the air outlet of one cover body is communicated with the air inlet of the other cover body through a ventilation pipeline. The utility model provides a heat recovery device which is high in heat recovery efficiency and small in occupied area.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery equipment, in particular to a heat recovery device. Background Art

[0002] A large amount of high-temperature exhaust gas is generated in the textile printing and dyeing production. The heat in the high-temperature exhaust gas is recovered and reused through the heat exchange device to achieve the production requirements of energy conservation and emission reduction. The heat exchange device sends room temperature gas to the high-temperature exhaust gas through the fan for heat exchange. In the currently commonly used heat exchange device, the heat exchange device includes a heat cylinder, and a hollow heat exchange tube for passing high-temperature exhaust gas is installed in the heat cylinder. The room temperature gas is transported horizontally through the outer wall of the hollow tube to form heat exchange. The air inlet and the air outlet are located at the same height of the heat cylinder, and the air inlet and the air outlet are set at the center of the height direction of the heat cylinder. Due to the horizontal left and right ventilation, the overall height of the heat cylinder is set relatively low. In order to improve the heat exchange efficiency, the horizontal laying distance of the heat cylinder needs to be set longer, resulting in a large footprint, which is insufficient. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a heat recovery device with high heat recovery efficiency and small footprint.

[0004] The utility model discloses a heat recovery device, comprising at least one pair of hood cylinders, the hood cylinder comprising a hood body, a cavity being arranged in the hood body, a plurality of heat exchange tubes being installed between an upper wall and a lower wall of the hood body, the upper end and the lower end of the heat exchange tube respectively passing through the upper wall and the lower wall of the hood body, the heat exchange tubes being axially passed through up and down, the hood body being provided with an air inlet and an air outlet, the air inlet and the air outlet being located on both sides of the hood body, the air inlet and the air outlet being staggered in distribution up and down, and in two hood cylinders of the same pair, the air outlet of one hood body is connected with the air inlet of the other hood body through a ventilation duct.

[0005] Furthermore, in the same pair of two cover tubes, the air outlet of one cover body and the air inlet of the other cover body are located at the same height.

[0006] Furthermore, a bottom frame is connected to the bottom of the cover body, a cavity is provided in the bottom frame, the cavity and the volume cavity in the cover body are not connected to each other, two interfaces are provided at the upper end of the cavity, the bottoms of the two cover bodies of the same pair are respectively connected to the two interfaces, and the bottom of the heat exchange tube is connected to the cavity.

[0007] Furthermore, a cover body is installed on the upper end of the hood body, and the upper end of the heat exchange tube is connected to the inside of the cover body.

[0008] Furthermore, in the same pair of cover tubes, an air inlet of one of the cover bodies is externally connected to a fan and allows air to flow in, and the air inlet is located at an upper position of the cover tube.

[0009] Furthermore, an air duct is provided in the ventilation duct, and the air duct is communicated with the volume cavity in the cover body.

[0010] Furthermore, the ventilation duct includes connecting seats located at two axial ends, the two connecting seats are fixedly connected to the outer walls of the two cover bodies respectively, a wind hood is connected between the connecting seats, and the two connecting seats and the wind hood surround to form an air duct.

[0011] Furthermore, the connecting seat includes a ring body away from one side of the cover body, and the ring body is fixedly connected to the wind cover.

[0012] Furthermore, the ring body is provided with a bending portion, which is turned outward in the radial direction of the ring body, and the wind shield bypasses the bending portion.

[0013] Furthermore, a heat insulating component is provided on the outer wall of the cover, and the heat insulating component is attached to and fixed to the outer wall of the cover.

[0014] Beneficial effects of the utility model:

[0015] By setting the air inlet and the air outlet to be staggered up and down, after the room temperature gas enters the cover, it forms a circuitous flow path L1 when flowing between different covers, thereby increasing the length of the air flow route, improving the heat exchange time, and reducing the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of an embodiment;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Sectional view along the MM direction;

[0019] Figure 4 for Figure 1 Middle P view;

[0020] Figure 5 for Figure 4 Sectional view along the NN axis;

[0021] Figure 6 It is a combination diagram of two pairs of cover tubes in the embodiment.

[0022] Figure numerals: bottom frame 1, cavity 11, interface 111, cover tube 2, cover body 21, cover body 22, air inlet 221, air outlet 222, ventilation duct 3, connecting seat 31, ring body 311, bending portion 3111, through hole 312, wind cover 32, heat insulation component 4, connecting portion 41, heat insulation component body 42, heat exchange tube 5, partition 6. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment 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 making creative work are within the scope of protection of the utility model.

[0024] like Figure 1 As shown, a heat recovery device includes at least one pair of shield cylinders 2, the bottom of the shield cylinder 2 is connected to a bottom frame 1, and the upper end of the bottom frame 1 is respectively connected to two shield cylinders 2 of the same pair.

[0025] Specifically, if Figure 1 As shown, the cover tube 2 includes a cover body 22, combined with Figure 3 The cover body 22 is a box structure, a cavity is provided in the cover body 22, the bottom of the cover body 22 is fixedly connected to the bottom frame 1, a cavity 11 is provided in the bottom frame 1, the cavity 11 and the cavity in the cover body 22 are not connected to each other, a cover body 21 is installed on the upper end of the cover body 22, the cover body 21 and the cavity in the cover body 22 are not connected to each other, and the upper end of the cover body 21 is connected to the exhaust gas conveying pipeline.

[0026] like Figure 1 As shown, a plurality of heat exchange tubes 5 are installed between the upper wall and the lower wall of the cover body 22, and the upper end and the lower end of the heat exchange tube 5 pass through the upper wall and the lower wall of the cover body 22 respectively. The heat exchange tube 5 is axially arranged up and down and penetrates, so that the upper end of the heat exchange tube 5 is connected with the inside of the cover body 21, and the heat exchange tube 5 is distributed at intervals along the radial surface of the cover body 22, and intervals are formed between adjacent heat exchange tubes 5 for air circulation.

[0027] like Figure 1 As shown, the cover body 22 is provided with an air inlet 221 and an air outlet 222, and the air inlet 221 and the air outlet 222 are located on both sides of the cover body 22, and the air inlet 221 and the air outlet 222 are staggered up and down. In the same pair of two cover tubes 2, the air outlet 222 of one cover body 22 is connected to the air inlet 221 of the other cover body 22 through the ventilation duct 3, and the air outlet 222 and the air inlet 221 connected through the ventilation duct 3 are located at the same height, so that the cavities in the two cover bodies 22 are connected.

[0028] Specifically, if Figure 1 , Figure 2As shown, the ventilation duct 3 is provided with an air duct, and the air duct is communicated with the cavity in the cover body 22. The ventilation duct 3 includes a connecting seat 31 located at both ends of the axial direction, the connecting seat 31 is annular, the connecting seat 31 is axially penetrated to form a through hole 312, one axial end of the connecting seat 31 is fixedly connected to the outer wall of the cover body 22, and the two connecting seats 31 are respectively fixedly connected to the outer walls of the two cover bodies 22. A wind shield 32 is connected between the connecting seats 31, the wind shield 32 is made of cloth-like material, the wind shield 32 is annular, the wind shield 32 is fixedly connected to the connecting seat 31, and the two connecting seats 31 and the wind shield 32 surround to form an air duct.

[0029] The connecting seat 31 includes a ring body 311 away from the side of the cover body 22. The ring body 311 is a circular ring structure. A bending portion 3111 is provided on the side of the ring body 311 away from the cover body 22. The bending portion 3111 is radially turned outward along the ring body 311. One side of the wind hood 32 is attached to the outer wall of the ring body 311 and is radially fixed by bolts. The wind hood 32 bypasses the bending portion 3111. The bending portions 3111 on both sides form an open shape on both sides of the wind hood 32 and have a limiting effect on the wind hood 32, thereby improving the stability of its fixed structure in the ventilation state of the wind hood 32.

[0030] like Figure 1 As shown, two interfaces 111 are provided at the upper end of the cavity 11 of the bottom frame 1 , the bottoms of the two covers 22 of the same pair are respectively connected to the two interfaces 111 , and the bottom of the heat exchange tube 5 is connected to the cavity 11 .

[0031] like Figure 1 As shown, in the same pair of shield tubes 2, one of the shield bodies 22 (i.e. Figure 1 The air inlet 221 of the cover body 22 on the left side is connected to the fan and introduces air. The air inlet 221 is located at the upper part of the cover tube 2. The air outlet 222 of the cover body 22 is connected to the air inlet 221 of the other cover body 22 through the ventilation duct 3. The connection position is located at the lower part of the cover body 22. The air outlet 222 of the other cover body 22 is located at the upper part. When the air inlet 221 of the left cover body 22 enters, the air flows along the Figure 1 The heated air flows along the path shown by the middle line L1. Figure 1 The air outlet 222 of the right cover 22 is discharged and passed into the body of the shaping machine for heating by the shaping machine, thereby realizing heat recovery. At the same time, the cover 21 above the left cover 22 is fed with high-temperature exhaust gas by the fan, and the high-temperature exhaust gas passes downward into the cavity 11 through the heat exchange pipe 5, and passes upward into the cover 21 along the heat exchange pipe 5 in the right cover 22, forming a high-temperature exhaust gas. Figure 1 The air in the housing 22 contacts the outer wall of the heat exchange tube 5 and then exchanges heat, thereby increasing the temperature of the air in the housing 22 and reducing the temperature of the high-temperature exhaust gas flowing in the heat exchange tube 5. The high-temperature exhaust gas is discharged to the outside after heat exchange, and the exhaust gas temperature is greatly reduced during discharge, thereby reducing heat emission.

[0032] Since the air inlet 221 and the air outlet 222 are staggered in vertical distribution, after the room temperature gas enters the cover body 22, a circuitous flow path L1 is formed, which increases the length of the air flow route, improves the heat exchange time, and reduces the floor space.

[0033] Further, such as Figure 1 As shown, a partition 6 is installed in the cover body 22, and the partition 6 is fixedly connected to the inner wall of the cover body 22. In the same cover body 22, there are two partitions 6 distributed up and down and staggered left and right, so that the L1 path forms a serpentine path in the cover body 22, thereby increasing the path length of the air flow, which is beneficial to improving the heat exchange efficiency.

[0034] like Figure 1 , Figure 3 As shown, the outer peripheral wall of the cover body 22 is fixedly mounted with a heat insulating component 4, and the heat insulating component 4 is attached to the four wall surfaces of the cover body 22 and fixed by screws. Figure 4 , Figure 5 The heat insulating component 4 is a square plate-shaped structure, and the heat insulating component 4 includes a heat insulating component body 42. According to the single-side size of the cover body 22, the heat insulating component body 42 is spliced ​​to meet actual needs. After splicing, the heat insulating component body 42 is fixed and sealed by the connecting part 41 to reduce heat loss and improve heat recovery efficiency.

[0035] like Figure 6 As shown, the shrouds 2 can be combined into two pairs or even more pairs to increase the heat exchange capacity.

[0036] like Figure 1 As shown, a drain hole (not shown) is provided at the bottom of the bottom frame 1 to facilitate the discharge of condensed water. An inspection port is provided at the outer wall of the bottom frame 1, and a door panel is installed at the inspection port. By opening the door panel, the situation inside the bottom frame 1 can be observed, and the inside of the bottom frame 1 can be cleaned in time.

[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A heat recovery device, characterized in that: The invention comprises at least one pair of cover tubes (2), wherein the cover tubes (2) comprise a cover body (22), wherein a cavity is provided in the cover body (22), wherein a plurality of heat exchange tubes (5) are installed between the upper wall and the lower wall of the cover body (22), wherein the upper end and the lower end of the heat exchange tube (5) pass through the upper wall and the lower wall of the cover body (22) respectively, and the heat exchange tube (5) is axially connected vertically, and the cover body (22) is provided with an air inlet (221) and an air outlet (222), wherein the air inlet (221) and the air outlet (222) are located on both sides of the cover body (22), and the air inlet (221) and the air outlet (222) are staggered in vertical distribution, and in the two cover tubes (2) of the same pair, the air outlet (222) of one of the cover bodies (22) is connected to the air inlet (221) of the other cover body (22) through a ventilation duct (3).

2. A heat recovery device according to claim 1, characterized in that: In the same pair of two cover tubes (2), the air outlet (222) of one of the cover bodies (22) and the air inlet (221) of the other cover body (22) are located at the same height.

3. A heat recovery device according to claim 1, characterized in that: The bottom of the cover body (22) is connected to a bottom frame (1), a cavity (11) is provided in the bottom frame (1), the cavity (11) and the containing cavity in the cover body (22) are not connected to each other, two interfaces (111) are provided at the upper end of the cavity (11), the bottoms of the two cover bodies (22) of the same pair are respectively connected to the two interfaces (111), and the bottom of the heat exchange tube (5) is connected to the cavity (11).

4. A heat recovery device according to claim 1, characterized in that: A cover body (21) is installed at the upper end of the cover body (22), and the upper end of the heat exchange tube (5) is connected to the interior of the cover body (21).

5. A heat recovery device according to claim 1, characterized in that: In the same pair of cover tubes (2), the air inlet (221) of one of the cover bodies (22) is externally connected to a fan and allows air to flow in, and the air inlet (221) is located at the upper portion of the cover tube (2).

6. A heat recovery device according to claim 1, characterized in that: An air duct is provided in the ventilation duct (3), and the air duct is communicated with the cavity in the cover body (22).

7. A heat recovery device according to claim 6, characterized in that: The ventilation duct (3) comprises connecting seats (31) located at two axial ends, the two connecting seats (31) are respectively fixedly connected to the outer walls of the two cover bodies (22), a wind cover (32) is connected between the connecting seats (31), and the two connecting seats (31) and the wind cover (32) surround to form the air duct.

8. A heat recovery device according to claim 7, characterized in that: The connecting seat (31) comprises a ring body (311) at a side away from the cover body (22), and the ring body (311) is fixedly connected to the wind cover (32).

9. A heat recovery device according to claim 8, characterized in that: The ring body (311) is provided with a bending portion (3111), the bending portion (3111) is turned outward radially along the ring body (311), and the wind shield (32) bypasses the bending portion (3111).

10. The heat recovery device according to claim 1, characterized in that: The outer wall of the cover body (22) is provided with a heat insulating component (4), and the heat insulating component (4) is attached to and fixed to the outer wall surface of the cover body (22).

Images