CN212431864U

CN212431864U - Easy-to-dismount waste gas heat recovery device

Info

Publication number: CN212431864U
Application number: CN202020172933.XU
Authority: CN
Inventors: 叶步章
Original assignee: ASIA NEO TECH INDUSTRIAL CO LTD
Current assignee: ASIA NEO TECH INDUSTRIAL CO LTD
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2021-01-29
Anticipated expiration: 2030-02-14

Abstract

The utility model provides an easy disconnect-type waste gas heat recovery unit, including a central pipe, have a used heat air inlet and a used heat gas vent, the peripheral cladding of this central pipe has a shell, and the interval forms an air inlet and a hot gas discharge port on this shell, wherein forms a heat exchange chamber between this shell and this central pipe, and this air inlet communicates to this hot gas discharge port via this heat exchange chamber to improve the problem that traditional waste gas heat recovery unit is difficult for dismantling, and simplify the easily adnexed subassembly structure of condensation material.

Description

Easy-to-dismount waste gas heat recovery device

Technical Field

The utility model relates to a waste gas heat recovery device's structural technology, a readily removable formula waste gas heat recovery device is related to very much.

Background

It is known that the exhaust heat recovery device can provide heat exchange between gases with different temperatures, and it is known that volatile substances contained in general exhaust heat gas often condense and remain on the exhaust heat recovery device when passing through the exhaust heat recovery device, and accumulated over the long term, the volatile substances can obstruct a flow channel in the exhaust heat recovery device, so that the exhaust heat recovery device can be disassembled at intervals, and the cleaning solution is used for thoroughly soaking, so as to dissolve miscellaneous dirt and condensate accumulated in the exhaust heat recovery device, and make normal temperature air containing the exhaust heat gas and waiting to absorb heat energy smoothly pass through the exhaust heat recovery device.

For example, taiwan patent No. M394449 discloses an exhaust heat recovery device (please refer to fig. 1 and fig. 2), which illustrates that the exhaust heat recovery device 1a is disposed on an industrial baking apparatus, the exhaust heat recovery device 1a contains a heat exchange pipe 13, the exhaust heat recovery device 1a is connected to an exhaust heat gas discharge pipe 71a of the baking apparatus for discharging high-temperature exhaust gas and an air inlet pipe 72a for extracting fresh ambient air, and the exhaust heat recovery device 1a can heat the high-temperature exhaust gas discharged from the baking apparatus through the heat exchange pipe 13 to warm the ambient air introduced into the baking apparatus from the outside. Therefore, the temperature of the exhaust gas discharged by the baking equipment can be reduced to reduce the forcing damage to the environmental temperature, and the normal temperature air introduced into the baking equipment can be preheated to reduce the electric energy consumption of the electric heater in the baking equipment.

However, the high-temperature exhaust gas discharged from the baking equipment often contains condensate formed by volatilization or overflow of the baked objects, for example, when the printed circuit board coated with solder mask ink is baked in the baking equipment, the solder mask ink releases volatile matters of organic solvents during high-temperature baking, and the volatile matters of the organic solvents flow into the exhaust gas heat recovery device along with the high-temperature exhaust gas, form condensate when being cooled and adhere to components inside the exhaust gas heat recovery device; the components to which the condensed matter adheres include, in particular, the inner wall of the heat exchange tube 13 for performing heat exchange, and the inner wall of the chamber in the exhaust gas heat recovery apparatus 1a capable of communicating with the heat exchange tube 13 in both directions (as shown in fig. 1); the condensate accumulated on the inner wall of the heat exchange tube 13 for a long time blocks the passage of the exhaust heat gas and affects the heat exchange efficiency of the normal temperature air, so that the entire exhaust heat recovery apparatus 1a needs to be periodically cleaned to remove the condensate inside.

However, the exhaust gas heat recovery device is generally constructed by screwing or welding, which causes inconvenience in the disassembly operation of the exhaust gas heat recovery device, and therefore, how to make the exhaust gas heat recovery device easily disassembled and simplify the assembly structure to which the condensed matter is easily attached has become an important subject to be improved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the background art, the present invention aims to improve the problem that the conventional exhaust heat recovery device is not easy to be disassembled.

Therefore, a preferred embodiment of the present invention provides an easily disassembled waste heat recycling device, which comprises: a central conduit having a waste heat inlet and a waste heat outlet; a shell, which is coated on the periphery of the central conduit and is provided with an air inlet and a hot air outlet at intervals; wherein a heat exchange chamber is formed between the shell and the central duct, and the air inlet is communicated to the hot gas discharge port through the heat exchange chamber.

In a further embodiment, at least one partition is disposed in the heat exchange chamber, the at least one partition separates the heat exchange chamber to form a bypass channel around the outer wall of the central duct, and the air inlet is connected to the hot gas outlet through the bypass channel. Wherein the central duct and at least one of said partitions are assembled in a contact and separated configuration.

In a further implementation, at least one of the partition plates includes a plurality of upper partition plates and a plurality of lower partition plates, the plurality of upper partition plates and the plurality of lower partition plates are disposed in the heat exchange chamber in a staggered manner, and the heat exchange chamber is divided into a plurality of heat collecting chambers communicated with each other, and the bypass flow passage is formed by the plurality of heat collecting chambers communicated in series.

In a further embodiment, at least one of the partition plates includes a plurality of upper partition plates and a plurality of lower partition plates, the plurality of upper partition plates and the plurality of lower partition plates are disposed in the heat exchange chamber in a half-to-half manner, and partition the heat exchange chamber into a plurality of heat collection chambers, and at least one of the plurality of upper partition plates and the plurality of lower partition plates is provided with a through hole, and the plurality of heat collection chambers are communicated with each other through the through hole to form the bypass flow channel.

In a further embodiment, at least one of the partitions is a spiral partition, and the circuitous flow channel is a spiral circuitous flow channel.

In a further embodiment, the housing is formed by a housing base and a housing cover that are detachably and assemblably coupled. The upper partition plates are fixed on the shell cover at intervals, and the lower partition plates are fixed in the shell seat at intervals. The spiral clapboard and the shell seat and the spiral clapboard and the shell cover are assembled in a contact and separation mode. At least one fastener is arranged between the shell seat and the shell cover, and the shell seat and the shell cover are mutually combined and separated through the fastener. The joint part of the shell seat and the shell cover is provided with an air-stopping rubber cushion.

In a further embodiment, the detachable waste heat recycling device is applied to a baking device, the baking device comprises a waste heat gas discharge pipe and an air inlet pipe for capturing fresh air, wherein the central conduit is used as the waste heat gas discharge pipe of the baking device, the central conduit is a straight pipe or a bent pipe, and the heat gas discharge port is connected with the air inlet pipe of the baking device.

In a further implementation, at least one of the waste heat air inlet and the waste heat air outlet of the central conduit is connected with a flow passage adapter. The runner adapter has a right-angle runner characteristic or a T-shaped runner characteristic. The runner adapter is accommodated in the shell. Wherein an air flow passage communicating with the circuitous flow passage is formed between the flow passage adapter and the shell, at least one of the air inlet and the hot air outlet is located on the shell at one side of the air flow passage and is communicated with the circuitous flow passage through the air flow passage.

In a further embodiment, the interface of the central conduit with the housing is provided with a gas-stop ring.

According to the technical means, the utility model discloses the technological effect that can produce lies in: the existing air duct at the waste hot gas discharge port of the waste hot gas generating equipment is used as a central duct for providing adhesion of condensed substances during heat exchange, so as to simplify the structure of the components attached with the condensed substances; the utility model discloses still design the waste gas heat recovery unit for easily dismantling the structure of this central pipe to do benefit to the central pipe among the washing or the change waste gas heat recovery unit, make waste gas and treat that the heat absorption normal atmospheric temperature air can both be smooth and easy carry out the heat exchange through waste gas heat recovery unit.

In addition, the following detailed description and drawings are provided to illustrate the present invention in further detail.

Drawings

Fig. 1 is a schematic configuration diagram of a conventional exhaust gas heat recovery apparatus.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a schematic perspective view of a first embodiment of the waste heat recovery device of the present invention.

Fig. 4 is an exploded perspective view of fig. 3.

Fig. 5 is a cross-sectional view of fig. 3.

Fig. 6 is a sectional view B-B of fig. 5.

Fig. 7a is a sectional view of a second embodiment of the exhaust gas heat recovery device according to the present invention.

Fig. 7b is an enlarged partial cross-sectional view of fig. 7 a.

Fig. 8 is a sectional view of a third embodiment of the exhaust heat recovery apparatus of the present invention.

Fig. 9 is a sectional view of a fourth embodiment of the exhaust heat recovery apparatus of the present invention.

Fig. 10 is an exploded perspective view of a fifth embodiment of the exhaust heat recovery apparatus of the present invention.

Fig. 11 is a perspective assembly view of fig. 10.

Fig. 12 is a schematic perspective view of a sixth embodiment of the exhaust heat recovery device according to the present invention.

Fig. 13 is a schematic perspective view of a seventh embodiment of the exhaust heat recovery apparatus of the present invention.

Fig. 14 is a schematic perspective view of an eighth embodiment of the exhaust heat recovery apparatus of the present invention.

Fig. 15 is a schematic view of the waste heat recovery apparatus of the present invention disposed on the baking device.

Description of reference numerals: 1a, 1 b-exhaust gas heat recovery means; 10-a central catheter; 11-waste heat inlet; 12-waste heat exhaust; 13-a heat exchange tube; 20-shell; 201-shell base; 202-a housing cover; 21-air inlet; 22-hot gas vent; 23-a heat exchange chamber; 231-a heat collection chamber; 24-a circuitous flow passage; 25-an airflow channel; 30-a separator; 301-upper baffle plate; 302-lower baffle; 31-a through hole; 40-fasteners; 41-male fastener; 42-female fastener; 50-a flow passage adapter; 61-air stopping rubber cushion; 62-a gas-stopping ring; 63-an air filter; 70-baking equipment; 71a, 71 b-exhaust hot gas discharge pipe; 72a, 72 b-inlet duct; 80-an exhaust pipe.

Detailed Description

First, referring to fig. 3, 4, 5 and 6, a first embodiment of the invention is disclosed, and the detachable waste heat recovery device 1b of the present invention includes a central duct 10 and a casing 20. Wherein:

the central catheter 10 is made of a material with good thermal conductivity, which may be metal. The central duct 10 has a waste heat inlet 11 and a waste heat outlet 12, and the high temperature exhaust gas enters the central duct 10 through the waste heat inlet 11 and then exits through the waste heat outlet 12, in the process, the central duct 10 has a high temperature.

The shell 20 is wrapped around the central duct 10, an air inlet 21 and a hot air outlet 22 are formed at intervals on the shell 20, and external normal temperature fresh air (hereinafter referred to as normal temperature air) enters the shell 20 through the air inlet 21, contacts the high temperature central duct 10, and then leaves from the hot air outlet 22, so that the temperature of the high temperature waste gas in the central duct 10 is reduced and the temperature of the normal temperature air outside the central duct 10 is increased in the process, and a heat exchange effect is formed.

Further, a heat exchange chamber 23 is formed between the housing 20 and the central duct 10, at least one partition plate 30 is disposed in the heat exchange chamber 23, the partition plate 30 partitions the heat exchange chamber 23 to form a bypass channel 24 surrounding the outer wall of the central duct 10, the air inlet 21 is communicated to the hot air outlet 22 through the bypass channel 24, and the normal temperature air can increase the time required for passing through the heat exchange chamber 23 through the bypass channel 24, thereby improving the heat exchange effect between the high temperature exhaust gas and the normal temperature air. The central duct 10 and the baffle 30 are assembled in a contact and separation manner, that is, the central duct 10 and the baffle 30 are not fixed by a screw group or a welding manner, so that the central duct 10 can be rapidly taken out from the shell 20, and volatile substances remained in the central duct 10 due to heat condensation of the exhaust gas can be cleaned. It should be noted that, in the present invention, since the exhaust heat does not pass through the bypass passage 24, the casing 20 and the partition 30 may not be cleaned, and thus the burden of the cleaning operation may be reduced. In addition, the contact surface of the central duct 10 and the shell 20 is provided with a gas-stop ring 62, and the gas tightness of the shell 20 is maintained by the obstruction of the gas-stop ring 62.

In the present embodiment, the partition plate 30 includes a plurality of upper partition plates 301 and a plurality of lower partition plates 302, the upper partition plates 301 and the lower partition plates 302 are alternately disposed in the heat exchange chamber 23, and the heat exchange chamber 23 is partitioned into a plurality of heat collecting chambers 231 communicated with each other, and the bypass passage 24 is formed by the plurality of heat collecting chambers 231 communicated with each other.

Referring to fig. 7a and fig. 7b, a second embodiment of the present invention is disclosed, which illustrates that the upper partition 301 and the lower partition 302 are disposed in the heat exchanging chamber 23 in a half-to-half manner in this embodiment, so as to partition the heat exchanging chamber 23 into a plurality of heat collecting chambers 231, and at least one of the upper partition 301 and the lower partition 302 is disposed with a through hole 31, so that the heat collecting chambers 231 can be communicated with each other through the through hole 31, thereby forming a circuitous flow passage 24.

Referring to fig. 8, a third embodiment of the present invention is disclosed, which illustrates that the partition 30 is a spiral partition in this embodiment, and the circuitous flow channel 24 is a spiral circuitous flow channel. The spiral diaphragm 30 is assembled with and separated from the housing 20 (including a housing seat 201 and a housing cover 202 described later) to facilitate the disassembly of the spiral diaphragm 30.

Referring to fig. 9, a fourth embodiment of the present invention is disclosed, which illustrates that at least one of the waste heat inlet 11 and the waste heat outlet 12 of the central duct 10 is connected to a flow channel adapter 50, and the flow channel adapter 50 is accommodated in the housing 20. The flow channel adapter 50 has a right-angled flow channel feature or a T-shaped flow channel feature to facilitate piping work of the exhaust heat recovery apparatus. Further, an air flow passage 25 communicating with the bypass flow passage 24 is formed between the flow passage adapter 50 and the housing 20, and at least one of the air inlet 21 and the hot air outlet 22 is located on the housing 20 on one side of the air flow passage 25 and communicates with the bypass flow passage 24 through the air flow passage 25.

Referring to fig. 10 and 11, the case 20 according to the fifth embodiment of the present invention includes a case base 201 and a case cover 202, and the case 20 is formed by combining the case base 201 and the case cover 202 in a detachable and assembling manner. The upper partition plate 301 is fixed on the shell cover 202 at intervals, and the lower partition plate 302 is fixed in the shell seat 201 at intervals. Further, the housing base 201 and the housing cover 202 are coupled to and separated from each other by at least one fastener 40, the fastener 40 includes a male fastener 41 and a female fastener 42, and the male fastener 41 and the female fastener 42 are respectively fixed on the housing base 201 and the housing cover 202, so that the housing base 201 and the housing cover 202 can be coupled to and separated from each other by the male fastener 41 and the female fastener 42. In addition, a gas-stop rubber pad 61 is disposed at the joint of the housing seat 201 and the housing cover 202, and the air tightness of the housing 20 is maintained by the separation of the gas-stop rubber pad 61.

Referring to fig. 12, 13 and 14, aspects of the sixth, seventh and eighth embodiments of the present invention are disclosed, which illustrate that the exhaust heat outlet 12 and the air inlet 21 may be located on the same end surface of the housing 20 (as shown in fig. 12 and 13). The housing 20 may be L-shaped (as shown in fig. 14).

As described above, the waste heat inlet 11, the waste heat outlet 12, the air inlet 21, and the hot air outlet 22 may be formed on any end surface of the casing 20, and the shape of the casing 20 is not limited to a rectangle, so that the waste heat recovery apparatus 1b can be suitably selected according to the installation site.

Referring to fig. 15, the waste heat recovery apparatus 1b is applied to a baking device 70, and the baking device 70 includes a waste heat gas discharge pipe 71b and an air intake pipe 72b for taking in ambient air. Furthermore, the central duct 10 can be formed by extending the exhaust heat gas exhaust pipe 71b of the baking device 70, the central duct 10 can be implemented as a straight pipe or a bent pipe, and the exhaust heat gas outlet of the central duct 10 is connected to an exhaust pipe 80, so that the high temperature exhaust gas can be exhausted to the outside through the exhaust pipe 80; the hot air outlet 12 is connected to the air inlet duct 72b of the roasting apparatus 70, so that the heated normal temperature air enters the roasting apparatus 70. In addition, the air inlet 21 can be connected to an air filter 63, so that the air filter 63 prevents dust, impurities and the like in the air from entering the housing 20, thereby ensuring that the air at normal temperature can smoothly pass through the housing 20.

It should be noted that, from the above description of the illustrated embodiment, it is further confirmed that the waste heat inlet 11 of the central duct 10 of the waste heat recovery device 1b of the present invention is directly installed on or near the waste heat gas discharge pipe 71b of the toasting apparatus 70, or the hot gas discharge port 22 of the waste heat recovery device 1b is directly installed on or near the air intake pipe 72b of the toasting apparatus 70, or the waste heat recovery device 1b is installed between the waste heat gas discharge pipe 71b and the air intake pipe 72b of the toasting apparatus 70, and the waste heat gas discharge pipe 71b and the air intake pipe 72b are relatively connected through other peripheral ducts, adapters, etc., of course, the waste heat recovery device 1b of the present invention is not limited to be placed on or held on the toasting apparatus 70, and these changes belong to the application scope contemplated and summarized by the present invention.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An easily detachable waste gas heat recovery device, comprising:

a central conduit having a waste heat inlet and a waste heat outlet;

a shell, which is coated on the periphery of the central conduit and is provided with an air inlet and a hot air outlet at intervals;

wherein a heat exchange chamber is formed between the shell and the central duct, and the air inlet is communicated to the hot gas discharge port through the heat exchange chamber.

2. The easy-to-disassemble exhaust gas heat recovery device of claim 1, wherein: at least one partition board is arranged in the heat exchange chamber, the partition board separates the heat exchange chamber to form a circuitous flow passage surrounding the peripheral outer wall of the central conduit, and the air inlet is communicated to the hot air discharge port through the circuitous flow passage.

3. The easy-to-disassemble exhaust gas heat recovery device of claim 2, wherein: the central duct and at least one of said partitions are assembled in a contact and separated configuration.

4. The easy-to-disassemble exhaust gas heat recovery device of claim 3, wherein: at least one of the partition plates comprises a plurality of upper partition plates and a plurality of lower partition plates, the plurality of upper partition plates and the plurality of lower partition plates are arranged in the heat exchange chamber in a staggered mode, the heat exchange chamber is divided into a plurality of mutually communicated heat collecting chambers, and the circuitous flow channel is formed by the plurality of heat collecting chambers in a serial communication mode.

5. The easy-to-disassemble exhaust gas heat recovery device of claim 3, wherein: at least one of the partition plates comprises a plurality of upper partition plates and a plurality of lower partition plates, the plurality of upper partition plates and the plurality of lower partition plates are arranged in the heat exchange chamber in a half-to-half connection mode, the heat exchange chamber is divided into a plurality of heat collection chambers, through holes are distributed in at least one of the plurality of upper partition plates and the plurality of lower partition plates, and the plurality of heat collection chambers are mutually communicated through the through holes to form the circuitous flow passage.

6. The easy-to-disassemble exhaust gas heat recovery device of claim 4 or 5, wherein: the housing is formed by combining a housing seat and a housing cover in a separable and assembling manner.

7. The easy-to-disassemble exhaust heat recovery device of claim 6, wherein: the upper partition plates are fixed on the shell cover at intervals, and the lower partition plates are fixed in the shell seat at intervals.

8. The easy-to-disassemble exhaust heat recovery device of claim 6, wherein: at least one fastener is arranged between the shell seat and the shell cover, and the shell seat and the shell cover are mutually combined and separated through the fastener.

9. The easy-to-disassemble exhaust heat recovery device of claim 6, wherein: the joint part of the shell seat and the shell cover is provided with an air-stopping rubber cushion.

10. The easy-to-disassemble exhaust gas heat recovery device of claim 3, wherein: at least one of the clapboards is a spiral clapboard, and the circuitous flow passage is a spiral circuitous flow passage.

11. The easy-to-disassemble exhaust heat recovery device of claim 10, wherein: the housing is formed by combining a housing seat and a housing cover in a separable and assembling manner.

12. The easy-to-disassemble exhaust heat recovery device of claim 11, wherein: the spiral clapboard and the shell seat and the spiral clapboard and the shell cover are assembled in a contact and separation mode.

13. The easy-to-disassemble exhaust heat recovery device of claim 11, wherein: at least one fastener is arranged between the shell seat and the shell cover, and the shell seat and the shell cover are mutually combined and separated through the fastener.

14. The easy-to-disassemble exhaust heat recovery device of claim 11, wherein: the joint part of the shell seat and the shell cover is provided with an air-stopping rubber cushion.

15. The easy dismantling exhaust heat recovery apparatus as claimed in claim 2, 3, 4 or 5, wherein: the easily disassembled waste gas heat recovery device is applied to a baking device, the baking device comprises a waste hot gas discharge pipe and an air inlet pipe for picking up fresh air, wherein the central conduit is used as the waste hot gas discharge pipe of the baking device, the central conduit is a straight pipe or a bent pipe, and the hot gas discharge port is connected with the air inlet pipe of the baking device.

16. The easy-to-disassemble exhaust heat recovery device of claim 15, wherein: at least one of the waste heat air inlet and the waste heat air outlet of the central conduit is connected with a flow passage adapter.

17. The easy dismantling exhaust heat recovery device of claim 16, wherein: the flow passage adapter has a right-angle flow passage characteristic or a T-shaped flow passage characteristic.

18. The easy dismantling exhaust heat recovery device of claim 16, wherein: the runner adapter is accommodated in the shell.

19. The easy-to-disassemble exhaust heat recovery device of claim 18, wherein: an air flow channel communicated with the circuitous flow channel is formed between the flow channel adapter and the shell, and at least one of the air inlet and the hot air outlet is located on the shell on one side of the air flow channel and is communicated with the circuitous flow channel through the air flow channel.

20. The easy-to-disassemble exhaust gas heat recovery device of claim 1, wherein: the contact surface of the central conduit and the shell is provided with an air stop ring.