CN212205386U - Wood drying kiln with air preheating device - Google Patents
Wood drying kiln with air preheating device Download PDFInfo
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- CN212205386U CN212205386U CN202020614326.4U CN202020614326U CN212205386U CN 212205386 U CN212205386 U CN 212205386U CN 202020614326 U CN202020614326 U CN 202020614326U CN 212205386 U CN212205386 U CN 212205386U
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- 238000001035 drying Methods 0.000 title claims abstract description 31
- 239000002023 wood Substances 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the technical field of wood drying, and provides a wood drying kiln with an air preheating device, which comprises a kiln body and a heat pump system, wherein a fresh air inlet and a hot air outlet are respectively arranged at two sides of the top of the kiln body, the hot air outlet is communicated with a heat exchange fan, a circulating fan is arranged at the fresh air inlet, an air outlet of the heat exchange fan is communicated with a second hot air conduit, and a second flow control valve is arranged on the second hot air conduit, so that hot and wet waste gas in the kiln body is introduced into a preheating sleeve pipe through the heat exchange fan and the second hot air conduit, the air newly introduced into the kiln body is preheated through the preheating sleeve pipe and is discharged onto a condenser, the heat pump system is favorable for thoroughly heating the fresh air, the drying effect of wood is improved, and simultaneously the purposes of waste heat recovery and utilization and energy consumption reduction are achieved, the structure design is simple and reasonable, the use is convenient and fast, and the practicability is strong.
Description
Technical Field
The utility model relates to a wood drying technical field, in particular to wood drying kiln with air preheating device.
Background
Wood drying is quality and increase of service life in order to guarantee timber and woodwork, must take appropriate measure to make moisture (moisture content) in the timber reduce to certain degree, adopt the wood drying kiln to carry out the drying to timber among the prior art, the wood drying kiln mainly comprises drying furnace main part, heat pump system, the pipeline, gate valve and humiture instrument etc. traditional wood drying kiln adopts brick and concrete structure drying kiln or aluminum alloy assembly kiln mostly, set up circulating fan and wind channel in the kiln, it realizes the heating to set up hot water heat exchanger in the wind channel, the heat source adopts the waste wood of boiler burning or the production of burning coal mostly, or adopt the heat pump to be used for heating.
Current heat pump system for wood drying is heating new trend air, can't utilize the wet waste gas of heat in the drying kiln to heat new trend air, causes thermal waste in the kiln exhaust heat wet waste gas, and heat pump system is heating the new trend air that does not preheat, leads to new trend air heating thoroughly not easily, and then leads to ligneous stoving effect variation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a wood drying kiln with air preheating device mainly preheats the sleeve pipe through setting up, then introduces the hot humid waste gas in the kiln body and preheats the sleeve pipe, introduces the new trend again and preheats the sleeve pipe, then utilizes to preheat the sleeve pipe and conduct the heat of hot humid waste gas for the new trend air, and then preheats the new trend air, and concrete structure is as follows.
The utility model designs a wood drying kiln with an air preheating device, which comprises a kiln body and a heat pump system, wherein a fresh air inlet and a hot air outlet are respectively arranged on two sides of the top of the kiln body, the hot air outlet is communicated with a heat exchange fan, and a circulating fan is arranged at the fresh air inlet;
an air outlet of the heat exchange fan is communicated with a second hot air guide pipe, a second flow control valve is arranged on the second hot air guide pipe, a preheating sleeve is communicated with the second hot air guide pipe, the bottom of the preheating sleeve is communicated with an air draft cover, the air draft cover is communicated with a fresh air inlet, and the preheating sleeve is used for introducing hot and humid waste gas and fresh air and transferring the heat of the hot and humid waste gas to the fresh air;
the preheating sleeve comprises an inner-layer housing, a first hot air channel for hot and wet waste gas to flow is arranged in the inner-layer housing, the first hot air channel is communicated with a second hot air conduit, an outer-layer housing is fixedly sleeved on the surface of the inner-layer housing, a second hot air channel is formed between the inner-layer housing and the outer-layer housing, a middle housing is fixedly sleeved on the surface of the inner-layer housing, the middle housing is positioned in the second hot air channel, a fresh air channel is formed between the middle housing and the inner-layer housing, and two ends of the fresh air channel are respectively connected with an air induction cover and the outside through connecting pipes;
the fresh air ventilating system is characterized in that a communicating pipe is fixedly communicated between the middle housing and the inner housing, the first hot air channel and the second hot air channel are communicated through the communicating pipe, hot and wet waste gas in the second hot air channel and the first hot air channel preheats air in the fresh air channel, and the inner housing penetrates through the outside of the induced draft housing and is used for discharging the hot and wet waste gas.
Further, preferably, the heat pump system comprises a condenser, an expansion valve, an evaporator and a compressor, the condenser is located in the kiln body, the expansion valve and the compressor are located in a heat pump external machine outside the kiln body, and the condenser, the expansion valve, the evaporator and the compressor are sequentially connected through connecting pipelines.
Further, preferably, an air outlet of the heat exchange fan is communicated with a first hot air conduit, and a first flow control valve is arranged on the first hot air conduit;
the bottom of evaporimeter is provided with the support frame, install a plurality of hot-blast spray tube on the support frame, hot wet waste gas jet orifice has been seted up to one side of hot-blast spray tube, hot-blast spray tube and first hot-blast pipe intercommunication.
Further, preferably, the outer layer housing, the middle housing, the inner layer housing and the communicating pipe are all made of copper or aluminum alloy.
Further, preferably, the length of the preheating jacket pipe is not less than one meter.
Further, preferably, sealing plates are fixedly connected to the periphery and the bottom of the supporting frame, an open accommodating space is formed between the sealing plates and the supporting frame, and the evaporator is located inside the accommodating space.
Further, preferably, the fresh air inlet and the hot air outlet are both provided with filter screens, and the filter screens are detachably connected with the kiln body.
Further, preferably, the outer casing, the middle casing and the inner casing are fixedly connected through a bracket.
The utility model discloses compare in prior art's beneficial effect is, the utility model discloses in introducing the hot humid waste gas in the kiln body through heat transfer fan and the hot-blast pipe of second and preheating the sleeve pipe, preheat the air in the kiln body through preheating the sleeve pipe newly-introduced, on arriving the condenser side by side, be favorable to heat pump system to carry out thorough heating to the new trend air, and then improve ligneous stoving effect, waste heat recovery utilizes has been reached simultaneously, the purpose of reduction energy consumption, structural design is simple reasonable, high durability and convenient use, has very strong practicality.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the preheating sleeve of the present invention;
fig. 3 is a schematic partial sectional view of the preheating sleeve of the present invention;
fig. 4 is a partial perspective view of the preheating casing according to the present invention.
Fig. 5 is a schematic view of the connection between the preheating sleeve and the induced draft cover according to the present invention.
Fig. 6 is a schematic diagram of an embodiment of the present invention.
In the figure: 1. a kiln body; 2. a condenser; 3. a circulation fan; 4. an expansion valve; 5. an evaporator; 6. A compressor; 7. a support frame; 8. a heat exchange fan; 9. a first hot air duct; 10. a first flow control valve; 11. a hot air nozzle; 12. a second hot air duct; 13. a second flow control valve; 14. Preheating a sleeve; 141. an outer housing; 142. a middle housing; 143. an inner layer housing; 144. a second hot air passage; 145. a fresh air channel; 146. a first hot air passage; 147. a communicating pipe; 15. an induced draft cover.
Detailed Description
The foregoing and additional embodiments and advantages of the present invention will be apparent from and more fully described in the following detailed description of the invention, taken in conjunction with the accompanying drawings. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them.
At present to the wet waste gas of heat that wood drying produced, there are multiple discharge mode and waste heat recovery mode, but do not have the wet waste gas of heat of a rational utilization to heat the new trend air, and then improve timber drying efficiency, reduce the mode of energy consumption, the utility model discloses mainly through setting up preheating sleeve 14, then introduce preheating sleeve 14 with the wet waste gas of heat in the kiln body 1 in, introduce preheating sleeve 14 with the new trend again, then utilize preheating sleeve 14 to conduct the heat of the wet waste gas of heat for the new trend air, and then preheat the new trend air, concrete structure is as follows.
As shown in fig. 1 to 5, a wood drying kiln with an air preheating device comprises a kiln body 1 and a heat pump system, wherein the heat pump system comprises a condenser 2, an expansion valve 4, an evaporator 5 and a compressor 6, the condenser 2 is positioned in the kiln body 1, the expansion valve 4 and the compressor 6 are positioned in a heat pump external machine outside the kiln body 1, and the condenser 2, the expansion valve 4, the evaporator 5 and the compressor 6 are sequentially connected through connecting pipes.
As shown in fig. 1, a fresh air inlet and a hot air outlet are respectively formed in two sides of the top of the kiln body 1, the hot air outlet is communicated with a heat exchange fan 8, and a circulating fan 3 is arranged at the fresh air inlet.
An air outlet of the heat exchange fan 8 is communicated with a first hot air guide pipe 9, a first flow control valve 10 is arranged on the first hot air guide pipe 9, a support frame 7 is arranged at the bottom of the evaporator 5, a plurality of hot air spray pipes 11 are mounted on the support frame 7, hot wet waste gas spray holes are formed in one sides of the hot air spray pipes 11, and the hot air spray pipes 11 are communicated with the first hot air guide pipe 9.
Through the structure, the heat pump system can be used for heating and drying the wood in the kiln body 1, the specific process is that under the action of the wind pressure of the heat exchange fan 8, hot and wet waste gas in the kiln body 1 is discharged into the hot wind spray pipe 11 through the first hot wind guide pipe 9 and is discharged to the surface of the evaporator 5, the hot and wet waste gas exchanges heat with the refrigeration working medium in the pipeline of the evaporator 5, the refrigeration working medium absorbs heat in the hot and wet waste gas to be evaporated, the low-temperature and low-pressure gas-liquid two phases are changed into low-temperature and low-pressure gas, the low-temperature and low-pressure refrigeration working medium gas is changed into high-temperature and high-pressure gas after being boosted by the compressor 6, the high-temperature and high-pressure refrigeration working medium gas discharges heat in the condenser 2 in the kiln body 1 to heat the air in the kiln body 1, the refrigeration working medium gas is condensed into liquid, the refrigeration, this is a complete thermal cycle process, and in order to heat the fresh air with the hot and humid exhaust gas of the kiln body 1, the following arrangement is made.
As shown in fig. 1, an air outlet of the heat exchange fan 8 is communicated with a second hot air duct 12, the second hot air duct 12 is communicated with a connecting pipeline through the first hot air duct 9, the connecting pipeline is communicated with the air outlet of the heat exchange fan 8, a second flow control valve 13 is arranged on the second hot air duct 12, the second hot air duct 12 is communicated with a preheating sleeve 14, the bottom of the preheating sleeve 14 is communicated with an air inducing cover 15, the air inducing cover 15 is communicated with a fresh air inlet, and the preheating sleeve 14 is used for introducing hot and humid waste gas and fresh air and transferring heat of the hot and humid waste gas to the fresh air.
As shown in fig. 5, the preheating casing 14 includes an inner casing 143, an outer casing 141 is fixedly sleeved on the surface of the inner casing 143, a second hot air channel 144 is formed between the inner casing 143 and the outer casing 141, an intermediate casing 142 is fixedly sleeved on the surface of the inner casing 143, the intermediate casing 142 is located in the second hot air channel 144, a fresh air channel 145 is formed between the intermediate casing 142 and the inner casing 143, a first hot air channel 146 for hot wet exhaust gas to flow is provided in the inner casing 143, the inner casing 143 is communicated with the second hot air conduit 12, a communicating pipe 147 is fixedly communicated between the intermediate casing 142 and the inner casing 143, the first hot air channel 146 and the second hot air channel 144 are communicated through the communicating pipe 147, two ends of the fresh air channel 145 are respectively connected with the induced hood 15 and the outside through connecting pipes, the hot and humid waste gas in the second hot air channel 144 and the first hot air channel 146 preheat the air in the fresh air channel 145, and the inner cover 143 penetrates to the outside of the induced draft cover 15 for discharging the hot and humid waste gas.
Under the wind pressure of the heat exchange fan 8, the hot and wet exhaust gas in the kiln body 1 can be discharged into the second hot air duct 12, as shown in fig. 5, because the second hot air duct 12 is communicated with the inner housing 143, and the inner housing 143 is internally provided with a first hot air channel 146, the first hot air channel 146 and the second hot air channel 144 are connected through a connecting pipe 147, the hot and wet exhaust gas in the first hot air channel 146 is further introduced into the second hot air channel 144, and the fresh air channel 145 is introduced with fresh air, the heat of the hot and wet exhaust gas in the second hot air channel 144 and the first hot air channel 146 is transferred to the fresh air through the middle housing 142 and the inner housing 143, so as to preheat the fresh air, and the preheated fresh air is discharged into the condenser 2 through the induced draft cover 15, and the condenser 2 heats the preheated fresh air again, guarantee that the new trend air can carry out abundant stoving to timber.
In this embodiment, preferably, the outer-layer encloser 141, the middle encloser 142, the inner-layer encloser 143, and the communicating pipe 147 are made of copper or aluminum alloy, and the copper or aluminum alloy has excellent heat conductivity, so that heat of hot and humid exhaust gas in the second hot air channel 144 and the first hot air channel 146 can be well transferred to fresh air in the fresh air channel 145 for preheating.
In this embodiment, preferably, the length of the preheating casing 14 is not less than one meter, so that the fresh air can be heated for a sufficient time, and further the preheating effect can be ensured.
In this embodiment, preferably, sealing plates are fixedly connected to the periphery and the bottom of the supporting frame 7, an accommodating space with an opening is formed by the sealing plates and the supporting frame 7, and the evaporator 5 is located inside the accommodating space.
In this embodiment, preferably, the fresh air inlet and the hot air outlet are both provided with a filter screen, the filter screen is detachably connected with the kiln body 1, and the filter screen is used for filtering particles in the circulation process.
In this embodiment, preferably, the outer casing 141, the middle casing 142 and the inner casing 143 are fixedly connected through a bracket, the outer casing 141, the middle casing 142 and the inner casing 143 can be stably connected together through the bracket, the specific bracket is arranged in the second hot air channel 144 and the fresh air channel 145, two ends of the bracket located in the second hot air channel 144 are respectively and fixedly connected with the outer casing 141 and the middle casing 142, and two ends of the bracket located in the fresh air channel 145 are respectively and fixedly connected with the middle casing 142 and the inner casing 143.
The above-mentioned embodiments are further detailed for the purpose, technical solution, and advantages of the present invention. It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. It should be understood that any modification, equivalent replacement, or improvement made by those skilled in the art without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A wood drying kiln with an air preheating device comprises a kiln body (1) and a heat pump system, and is characterized in that a fresh air inlet and a hot air outlet are respectively formed in two sides of the top of the kiln body (1), the hot air outlet is communicated with a heat exchange fan (8), and a circulating fan (3) is arranged at the fresh air inlet;
an air outlet of the heat exchange fan (8) is communicated with a second hot air guide pipe (12), a second flow control valve (13) is arranged on the second hot air guide pipe (12), the second hot air guide pipe (12) is communicated with a preheating sleeve (14), the bottom of the preheating sleeve (14) is communicated with an air draft cover (15), the air draft cover (15) is communicated with a fresh air inlet, and the preheating sleeve (14) is used for introducing hot and humid waste gas and fresh air and transferring the heat of the hot and humid waste gas to the fresh air.
2. A wood-drying kiln having an air-preheating device according to claim 1, characterized in that: the preheating sleeve (14) comprises an inner layer housing (143), a first hot air channel (146) for hot and wet waste gas to flow is arranged in the inner layer housing (143), the first hot air channel (146) is communicated with a second hot air conduit (12), an outer layer housing (141) is fixedly sleeved on the surface of the inner layer housing (143), a second hot air channel (144) is formed between the inner layer housing (143) and the outer layer housing (141), a middle housing (142) is fixedly sleeved on the surface of the inner layer housing (143), the middle housing (142) is positioned in the second hot air channel (144), a fresh air channel (145) is formed between the middle housing (142) and the inner layer housing (143), and two ends of the fresh air channel (145) are respectively connected with an induced draft cover (15) and the outside through connecting pipes;
a communicating pipe (147) is fixedly communicated between the middle housing (142) and the inner housing (143), the first hot air channel (146) and the second hot air channel (144) are communicated through the communicating pipe (147), hot and humid waste gas in the second hot air channel (144) and the first hot air channel (146) preheats air in the fresh air channel (145), and the inner housing (143) penetrates through the outside of the induced draft cover (15) and is used for discharging the hot and humid waste gas.
3. A wood-drying kiln having an air-preheating device according to claim 2, characterized in that: the heat pump system comprises a condenser (2), an expansion valve (4), an evaporator (5) and a compressor (6), wherein the condenser (2) is positioned in a kiln body (1), the expansion valve (4) and the compressor (6) are positioned in a heat pump external machine outside the kiln body (1), and the condenser (2), the expansion valve (4), the evaporator (5) and the compressor (6) are sequentially connected through connecting pipelines.
4. A wood-drying kiln having an air-preheating device according to claim 3, characterized in that: an air outlet of the heat exchange fan (8) is communicated with a first hot air conduit (9), and a first flow control valve (10) is arranged on the first hot air conduit (9);
the bottom of evaporimeter (5) is provided with support frame (7), install a plurality of hot-blast spray tube (11) on support frame (7), hot humid waste gas jet orifice has been seted up to one side of hot-blast spray tube (11), hot-blast spray tube (11) and first hot-blast pipe (9) intercommunication.
5. A wood-drying kiln with an air-preheating device according to claim 4, characterized in that: the outer layer encloser (141), the middle encloser (142), the inner layer encloser (143) and the communicating pipe (147) are all made of one of copper or aluminum alloy.
6. A wood-drying kiln having an air-preheating device according to claim 5, characterized in that: the length of the preheating sleeve (14) is not less than one meter.
7. A wood-drying kiln having an air-preheating device according to claim 6, characterized in that: the all-round and the equal fixedly connected with closing plate in bottom of support frame (7), the closing plate forms one with support frame (7) and has open accommodation space, evaporimeter (5) are located inside the accommodation space.
8. A wood-drying kiln having an air-preheating device according to claim 1, characterized in that: the fresh air inlet and the hot air outlet are both provided with filter screens, and the filter screens are detachably connected with the kiln body (1).
9. A wood-drying kiln having an air-preheating device according to claim 7, characterized in that: the outer layer cover (141), the middle cover (142) and the inner layer cover (143) are fixedly connected through a bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020614326.4U CN212205386U (en) | 2020-04-22 | 2020-04-22 | Wood drying kiln with air preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020614326.4U CN212205386U (en) | 2020-04-22 | 2020-04-22 | Wood drying kiln with air preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212205386U true CN212205386U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020614326.4U Expired - Fee Related CN212205386U (en) | 2020-04-22 | 2020-04-22 | Wood drying kiln with air preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212205386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880435A (en) * | 2021-03-16 | 2021-06-01 | 广东兴科环保科技有限公司 | Dividing wall long-range heat recovery system |
-
2020
- 2020-04-22 CN CN202020614326.4U patent/CN212205386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880435A (en) * | 2021-03-16 | 2021-06-01 | 广东兴科环保科技有限公司 | Dividing wall long-range heat recovery system |
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| GR01 | Patent grant | ||
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Granted publication date: 20201222 |