CN110260605B - Drying room combining total heat recovery and dehumidification heat regeneration - Google Patents
Drying room combining total heat recovery and dehumidification heat regeneration Download PDFInfo
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- CN110260605B CN110260605B CN201910481152.0A CN201910481152A CN110260605B CN 110260605 B CN110260605 B CN 110260605B CN 201910481152 A CN201910481152 A CN 201910481152A CN 110260605 B CN110260605 B CN 110260605B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/02—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in buildings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a drying room combining total heat recovery and dehumidification heat regeneration, which comprises a drying room and a heat control room, wherein an open system heat pump, a closed system heat pump, a first heat exchanger and a second heat exchanger are arranged in the heat control room; the closed system heat pump comprises a second compressor, a second condenser and a second evaporator; the circulating air port, the hot flow channel inlet of the second heat exchanger and the cold flow channel outlet of the first heat exchanger are communicated through a second air duct of a three-way structure; a second evaporator is arranged between the outlet of the hot flow channel of the second heat exchanger and the inlet of the cold flow channel; a first evaporator is arranged between the outlet of the heat flow channel of the first heat exchanger and the air outlet. The dryer keeps and exerts the advantages of open type and closed type, and the dried articles have small deformation, good appearance, sufficient inherent fragrance and low operating cost.
Description
Technical Field
The invention belongs to the technical field of drying equipment, and particularly relates to a drying room with a heat exchanger and combined full heat recovery and dehumidification backheating.
Background
The heat pump dryer mainly adopts two operation modes of open type and closed type, the open type of the heat pump is relative to the closed type of the heat pump, and in the open type, air sent into a drying room is heated through a condenser in a thermal control chamber, and the dried objects are heated in a circulating mode. The drying host outside the drying room is a compressor and an evaporator and is used for absorbing outdoor air heat. And in the closed mode, air in the drying room is heated by the condenser and then is absorbed and reheated by the evaporator. The product dried by the open system of the heat pump has the defects of insufficient appearance, poor color and loss of intrinsic color of the article.
Closed dehumidification stoving and open hot air drying are the drying equipment of two different principles, and two kinds of methods respectively have advantage and shortcoming, and the product of closed drying stoving processing, article warp for a short time, and the colour is just, and fragrant smell is sufficient, and closed stoving running cost is low, and the shortcoming of closed dehumidification stoving is: at the later stage of the drying process, after the drying temperature exceeds 50 ℃, the humidity in the drying room is low, and the heat pump evaporator and the separated heat pipe evaporator for closed drying are refrigerated, so that the humidity is low, and the drying and heating temperature is influenced by refrigeration. At the moment, the refrigeration influences the drying and heating temperature, and at the moment, the efficiency is lower than that of an open type.
There is drying-machine that closed and open stoving can switch over each other among the prior art, through the flow path of electronic blast gate control heating gas, switch back and forth between open and closed, but this kind still can't avoid the characteristics that open and closed stoving itself exists, still can have the mode switching can not match the stoving characteristic of different products, leads to the stoving outward appearance not enough, and the colour is relatively poor, and the shortcoming and the hydrofuge that the thing is internal to be lost in the look air current are not good, the shortcoming of taking electric charge.
Disclosure of Invention
The invention aims to provide a drying room combining full heat recovery and dehumidification heat regeneration by combining the advantages of open drying and closed drying aiming at the defects of the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that:
a drying room combining total heat recovery and dehumidification and heat return comprises a drying chamber and a heat control chamber, wherein an air supply outlet and an air return outlet which are connected with the heat control chamber are arranged on the drying chamber, a fresh air inlet and an air exhaust outlet are arranged on the heat control chamber, and the air return outlet is vertically divided into a circulating air inlet and a moisture exhaust air inlet; an open system heat pump, a closed system heat pump, a first heat exchanger and a second heat exchanger are arranged in the thermal control chamber, and the open system heat pump comprises a first compressor, a first condenser and a first evaporator; the closed system heat pump comprises a second compressor, a second condenser and a second evaporator; the first heat exchanger and the second heat exchanger both comprise a hot flow channel and a cold flow channel.
The fresh air inlet is communicated with a cold flow channel inlet of the first heat exchanger through a first air duct; the circulating air port, the hot flow channel inlet of the second heat exchanger and the cold flow channel outlet of the first heat exchanger are communicated through a second air duct of a three-way structure; before the circulating return air enters the closed evaporator, the circulating return air is mixed with fresh air and the second heat exchanger, so that the return air temperature is reduced, and the dehumidification efficiency is improved.
An outlet of a hot flow channel of the second heat exchanger is communicated with an inlet of a cold flow channel of the second heat exchanger through a third air duct, and the second evaporator is arranged in the third air duct; the effect of second evaporimeter is to carry out the condensation to the circulated air, because the second heat exchanger has once cooled down, the effect that the condensation effect of evaporimeter is compared in directly carrying out the condensation to the circulated air strengthens greatly to the whole consumption of closed system heat pump has been reduced. And a cold flow channel outlet of the second heat exchanger is communicated with the air supply outlet through a fourth air channel, and a circulating fan, a first condenser and a second condenser are arranged in the fourth air channel.
The dehumidification air port is communicated with a heat flow channel inlet of the first heat exchanger, a heat flow channel outlet of the first heat exchanger is communicated with the air exhaust port through a fifth air duct, and the first evaporator is arranged in the fifth air duct. The first evaporator extracts heat from the ambient environment and the exhaust moisture. The heat in the dehumidifying return air exchanges heat with the entering fresh air with relatively low temperature, so that the temperature of the exhausted air is reduced, the temperature of the entering fresh air is increased, and the humidity of the fresh air is reduced.
An electric air valve is further arranged in the fifth air duct, and a moisture exhausting fan is arranged at the air outlet.
And an electric control box is arranged outside the heat control chamber and is in control connection with the open system heat pump, the closed system heat pump, the electric air valve, the circulating fan and the dehumidifying fan.
The first heat exchanger and the second heat exchanger are both wind-wind plate type heat exchangers.
The top of the drying chamber is provided with a perforated plate type air channel which is communicated with the air supply outlet, the perforated plate type air channel is a flat plate with a cavity, and a plurality of air outlet holes are uniformly distributed on the bottom surface of the perforated plate type air channel.
And a foamed polyurethane heat-preservation storage plate is arranged on the wall of the drying chamber.
And a filter screen is arranged on the air return inlet. The circulating air enters a closed system through filtered return air.
The fresh air inlet is provided with an aluminum alloy shutter.
And a flat-open heat-preservation double-leaf large door is arranged at the tail end of the drying chamber.
The working principle of the dryer is as follows: the circulating fan is used for discharging air, hot air is blown vertically downwards through dried objects through the air supply outlet and the galvanized iron sheet top plate hole plate type air channel, then return air is divided into two parts, the return air with lower humidity at the upper part enters the second air channel through the circulating air inlet of the return air inlet, fresh air at the fresh air inlet enters the second air channel through the first air channel and the cold flow channel of the first heat exchanger, the return air and the fresh air are crossed and enter the hot flow channel of the second heat exchanger, then the return air and the fresh air are condensed and dehumidified through the second evaporator, the fresh air is primarily heated through the cold flow channel of the second heat exchanger again, and the fresh air is further heated through the first condenser and the second condenser and is sent out through the.
The return air with higher humidity at the lower part is subjected to heat recovery and dehumidification, enters a heat flow channel of the first heat exchanger through a dehumidification air opening to recover heat, then passes through the first evaporator, further absorbs the heat and is discharged through an air outlet.
The invention has the beneficial effects that: the dryer is internally provided with two mutually-blended air paths, wherein one air path is in closed circulation, after the product is dried, the air is converged with fresh air through a circulation air port, enters a second heat exchanger for heat recovery, is subjected to heat recovery again in a second evaporator, and is fully heated through the second heat exchanger, a first condenser and a second condenser so as to fully discharge moisture and re-heat the circulation air; and the other air path recovers heat through the first heat exchanger and the second evaporator. The drying machine overcomes the defects of insufficient drying appearance, poor color and loss of intrinsic color air flow of the articles of the open heat pump system, overcomes the defects of poor moisture removal and electricity consumption of the closed heat pump system, retains and exerts the advantages of the heat pump system and the closed heat pump system, and has the advantages of small deformation, good appearance, sufficient intrinsic fragrance and low operating cost of the dried articles.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a schematic structural view of a thermal control chamber;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic flow direction of the air path in the embodiment.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
As shown in fig. 1 to 3, a drying room combining total heat recovery and dehumidification and heat return comprises a drying chamber 2 and a thermal control chamber 1, wherein the drying chamber 2 is provided with an air supply outlet 21 and an air return inlet connected with the thermal control chamber 1, the thermal control chamber 1 is provided with a fresh air inlet 12 and an air exhaust outlet 11, and the air return inlet is vertically divided into a circulating air inlet 22 and a moisture exhaust air inlet 23; an open system heat pump, a closed system heat pump, a first heat exchanger 5 and a second heat exchanger 6 are arranged in the thermal control chamber 1, and the open system heat pump comprises a first compressor 31, a first condenser 32 and a first evaporator 33; the closed system heat pump includes a second compressor 41, a second condenser 42, and a second evaporator 43; the first heat exchanger 5 and the second heat exchanger 6 each include a hot flow path and a cold flow path.
The fresh air inlet 12 is communicated with a cold flow channel inlet of the first heat exchanger 5 through a first air duct 71; the circulating air port 22, the hot flow channel inlet of the second heat exchanger 6 and the cold flow channel outlet of the first heat exchanger 5 are communicated through a second air duct 72 with a three-way structure; before the circulating return air enters the second evaporator 43, the return air is mixed with fresh air and the second heat exchanger 6, so that the return air temperature is reduced, and the dehumidification efficiency is improved.
The outlet of the hot flow channel of the second heat exchanger 6 is communicated with the inlet of the cold flow channel of the second heat exchanger 6 through a third air duct 73, and the second evaporator 43 is arranged in the third air duct 73; the outlet of the cold flow passage of the second heat exchanger 6 is communicated with the air supply port 21 through a fourth air duct 74, and a circulating fan 81, a first condenser 32 and a second condenser 42 are provided in the fourth air duct 74.
The moisture exhausting air port 23 is communicated with the inlet of the heat flow passage of the first heat exchanger 5, the outlet of the heat flow passage of the first heat exchanger 5 is communicated with the air outlet 11 through a fifth air duct 75, and the first evaporator 33 is arranged in the fifth air duct 75. The first evaporator 33 extracts heat from the surroundings and the exhaust humidity. The heat in the dehumidifying return air exchanges heat with the entering fresh air with relatively low temperature, so that the temperature of the exhausted air is reduced, the temperature of the entering fresh air is increased, and the humidity of the fresh air is reduced.
An electric air valve 83 is further arranged in the fifth air duct 75, and a dehumidifying fan 82 is arranged at the air outlet 11.
An electric control box 9 is arranged on the outer side of the thermal control chamber 1, and a touch liquid crystal screen is arranged on the electric control box 9. The electric control box 9 is in control connection with an open system heat pump, a closed system heat pump, an electric air valve 83, a circulating fan 81 and a dehumidifying fan 82.
The first heat exchanger 5 and the second heat exchanger 6 are both wind-wind plate type heat exchangers.
The top of the drying chamber 2 is provided with a perforated plate type air duct 24, the perforated plate type air duct 24 is communicated with the air supply outlet 21, the perforated plate type air duct 24 is a flat plate with a cavity, and a plurality of air outlet holes are uniformly distributed on the bottom surface of the perforated plate type air duct 24.
And a foamed polyurethane heat-preservation storage plate 25 is arranged on the wall of the drying chamber 2.
And a filter screen is arranged on the air return inlet. The circulating air enters a closed system through filtered return air.
An aluminum alloy shutter is arranged at the fresh air inlet 12.
And a flat-open heat-preservation double-leaf large door 26 is arranged at the tail end of the drying chamber 2.
As shown in fig. 4, the operation principle of the dryer is as follows: the circulating fan 81 blows air out, hot air vertically blows downwards through the dried objects through the air supply opening 21 and the galvanized iron sheet top plate type air duct 24, then return air is divided into two parts, wherein the return air with lower humidity at the upper part enters the second air duct 72 through the circulating air opening 22 of the return air opening, fresh air at the fresh air inlet 12 enters the second air duct 72 through the first air duct 71 and the cold flow channel of the first heat exchanger 5, the return air and the fresh air are converged and enter the hot flow channel of the second heat exchanger 6, then the return air is condensed and dehumidified through the second evaporator 43, the fresh air is primarily heated through the cold flow channel of the second heat exchanger 6 again, the return air is further heated through the first condenser 32 and the second condenser 42, and the return air is sent out through the circulating fan 81 to complete.
The return air with higher humidity at the lower part is subjected to heat recovery and dehumidification, enters a heat flow channel of the first heat exchanger 5 through the dehumidification air opening 23 to recover heat, then passes through the first evaporator 33 to further absorb heat, and then is discharged through the air outlet 11.
Two mutually-blended air paths are arranged in the dryer, wherein one air path is in closed circulation, after the product is dried, the air is converged with fresh air through a circulation air opening 22, enters a second heat exchanger 6 for heat recovery, is subjected to heat recovery again in a second evaporator 43, and is fully heated through the second heat exchanger 6, a first condenser 32 and a second condenser 42, so that the circulating air is fully dehumidified and reheated; the other air path recovers heat through the first heat exchanger 5 and the second evaporator 43.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "center", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.
Claims (9)
1. The utility model provides a drying room that full heat recovery and dehumidification backheat are united, includes drying chamber and heat accuse room, be equipped with on the drying chamber with supply-air outlet and return air inlet that the heat accuse room links to each other, the heat accuse room is equipped with new trend entry and air exit, its characterized in that: the air return inlet is vertically divided into a circulating air inlet and a moisture exhaust air inlet; an open system heat pump, a closed system heat pump, a first heat exchanger and a second heat exchanger are arranged in the thermal control chamber, and the open system heat pump comprises a first compressor, a first condenser and a first evaporator; the closed system heat pump comprises a second compressor, a second condenser and a second evaporator; the first heat exchanger and the second heat exchanger both comprise a hot flow channel and a cold flow channel; the fresh air inlet is communicated with a cold flow channel inlet of the first heat exchanger through a first air duct; the circulating air port, the hot flow channel inlet of the second heat exchanger and the cold flow channel outlet of the first heat exchanger are communicated through a second air duct of a three-way structure; an outlet of a hot flow channel of the second heat exchanger is communicated with an inlet of a cold flow channel of the second heat exchanger through a third air duct, and the second evaporator is arranged in the third air duct; the outlet of the cold flow channel of the second heat exchanger is communicated with the air supply outlet through a fourth air channel, and a circulating fan, a first condenser and a second condenser are arranged in the fourth air channel; the dehumidification air port is communicated with a heat flow channel inlet of the first heat exchanger, a heat flow channel outlet of the first heat exchanger is communicated with the air exhaust port through a fifth air duct, and the first evaporator is arranged in the fifth air duct.
2. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: an electric air valve is further arranged in the fifth air duct, and a moisture exhausting fan is arranged at the air outlet.
3. The drying room combining total heat recovery and dehumidification heat recovery according to claim 2, is characterized in that: and an electric control box is arranged outside the heat control chamber and is in control connection with the open system heat pump, the closed system heat pump, the electric air valve, the circulating fan and the dehumidifying fan.
4. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: the first heat exchanger and the second heat exchanger are both wind-wind plate type heat exchangers.
5. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: the top of the drying chamber is provided with a perforated plate type air channel which is communicated with the air supply outlet, the perforated plate type air channel is a flat plate with a cavity, and a plurality of air outlet holes are uniformly distributed on the bottom surface of the perforated plate type air channel.
6. The drying room combining total heat recovery and dehumidification heat recovery according to claim 5, is characterized in that: and a foamed polyurethane heat-preservation storage plate is arranged on the wall of the drying chamber.
7. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: and a filter screen is arranged on the air return inlet.
8. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: the fresh air inlet is provided with an aluminum alloy shutter.
9. The drying room combining total heat recovery and dehumidification heat recovery according to claim 1, is characterized in that: and a flat-open heat-preservation double-leaf large door is arranged at the tail end of the drying chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481152.0A CN110260605B (en) | 2019-06-04 | 2019-06-04 | Drying room combining total heat recovery and dehumidification heat regeneration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910481152.0A CN110260605B (en) | 2019-06-04 | 2019-06-04 | Drying room combining total heat recovery and dehumidification heat regeneration |
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| CN110260605A CN110260605A (en) | 2019-09-20 |
| CN110260605B true CN110260605B (en) | 2020-11-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864506A (en) * | 2019-12-25 | 2020-03-06 | 浙江柿子新能源科技有限公司 | Heating and dehumidifying function integrated drying room and working method thereof |
| CN111000275B (en) * | 2019-12-27 | 2021-09-21 | 许昌智工机械制造有限公司 | Tobacco leaf drying system |
| CN114811918A (en) * | 2021-01-21 | 2022-07-29 | 江阴海志包装机械有限公司 | Ink rotary type hot return air energy-saving equipment |
| CN113170910A (en) * | 2021-04-26 | 2021-07-27 | 云南省林业和草原技术推广总站 | Nut drying device |
| CN116045618A (en) * | 2022-12-26 | 2023-05-02 | 河南天杰冷链设备科技有限公司 | Dryer and drying room |
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| CN205536673U (en) * | 2016-01-29 | 2016-08-31 | 广州市同益新能源科技有限公司 | Dry heat pump system of constant temperature |
| CN107136551A (en) * | 2017-05-31 | 2017-09-08 | 河南芳捷农业发展有限公司 | A kind of enclosed hydrofuge and the hot air combined heat pump tobacco leaf drying room used of open type |
| CN206576276U (en) * | 2017-03-22 | 2017-10-24 | 河南芳捷农业发展有限公司 | A kind of heat pump tobacco leaf drying room that hydrofuge heat is reclaimed with heat pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102213484A (en) * | 2011-05-30 | 2011-10-12 | 通力盛达能源设备（北京）有限公司 | Air heat exchange device, manufacturing method thereof and air heat exchange air-conditioning all-in-one device |
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2019
- 2019-06-04 CN CN201910481152.0A patent/CN110260605B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205536673U (en) * | 2016-01-29 | 2016-08-31 | 广州市同益新能源科技有限公司 | Dry heat pump system of constant temperature |
| CN206576276U (en) * | 2017-03-22 | 2017-10-24 | 河南芳捷农业发展有限公司 | A kind of heat pump tobacco leaf drying room that hydrofuge heat is reclaimed with heat pipe |
| CN107136551A (en) * | 2017-05-31 | 2017-09-08 | 河南芳捷农业发展有限公司 | A kind of enclosed hydrofuge and the hot air combined heat pump tobacco leaf drying room used of open type |
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