CN210425998U - High-temperature heat pump unit for drying sludge - Google Patents
High-temperature heat pump unit for drying sludge Download PDFInfo
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- CN210425998U CN210425998U CN201920581259.8U CN201920581259U CN210425998U CN 210425998 U CN210425998 U CN 210425998U CN 201920581259 U CN201920581259 U CN 201920581259U CN 210425998 U CN210425998 U CN 210425998U
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Abstract
A high-temperature heat pump unit for drying sludge comprises a heat pump dehumidification system, a plurality of circulating fans, a heat exchange core body and a return air circulating channel, wherein the heat pump dehumidification system comprises a compressor, a first condenser, a second condenser, a drying filter, a thermal expansion valve and an evaporator; the heat exchange core body is provided with a horizontal channel and a vertical channel; the heat exchange core body is arranged between the second condenser and the evaporator, the second path of air circulating air is communicated with the air inlet of the vertical channel, the air outlet of the vertical channel is communicated with the air inlet of the evaporator, the air outlet of the evaporator is communicated with the air inlet of the horizontal channel, the air outlet of the horizontal channel is communicated with the air inlet of the second condenser, the air outlet sides of the first condenser and the second condenser are provided with circulating fans, and the circulating fans are separated from the return air circulating channel. The utility model discloses energy-conservation, subtract consume, can high-efficient stoving mud.
Description
Technical Field
The utility model relates to a stoving technical field especially relates to a high temperature heat pump set for mud is dried.
Background
At present, a plurality of heat pump high-temperature drying and dehumidifying units are available in the market, but the heat pump high-temperature drying and dehumidifying units are all units with only one condenser in one-to-one correspondence with an evaporator, and all high-temperature hot air passes through the evaporator, so that the evaporator is heavy in load, the evaporation temperature is too high, and the dehydration effect is poor; meanwhile, the load of the evaporator is heavy, so that the exhaust temperature of the compressor is overhigh, the pressure of a heat pump system is overhigh, the energy consumption is low, the service life of the compressor is short, and the like. In addition, the unit is only provided with one condenser which is in one-to-one correspondence with the evaporator, the circulating air duct is small, the air speed is high, sludge and dust are easy to enter the heat exchanger, and the corrosion of the fins of the heat exchanger is accelerated.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, a high-temperature heat pump unit which is energy-saving, consumption-reducing and efficient in sludge drying is provided.
In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme:
a high-temperature heat pump unit for drying sludge comprises a heat pump dehumidification system, a plurality of circulating fans, a heat exchange core body and a return air circulating channel, wherein the heat pump dehumidification system comprises a compressor, a first condenser, a second condenser, a drying filter, a thermal expansion valve and an evaporator which are sequentially connected to the same loop through pipelines, the first condenser is arranged above the second condenser, the first condenser and the second condenser divide air circulating air into two paths, and the first path of air circulating air is communicated with an air inlet of the first condenser;
the heat exchange core body is arranged between the second condenser and the evaporator, the second path of air circulating air is communicated with a vertical channel air inlet of the heat exchange core body, a vertical channel air outlet of the heat exchange core body is communicated with an air inlet of the evaporator, an air outlet of the evaporator is communicated with a horizontal channel air inlet of the heat exchange core body, a horizontal channel air outlet of the heat exchange core body is communicated with an air inlet of the second condenser, circulating fans are arranged on the air outlet sides of the first condenser and the second condenser, the circulating fans are separated from a return air circulating channel, and an air outlet of the return air circulating channel is communicated with a vertical channel air inlet of the heat exchange.
According to the high-temperature heat pump unit for drying sludge, the high-temperature heat pump unit adopts double condensers and is of a structure which is vertically arranged, and air circulation air is divided into two parts, so that the problems that the load is large, the dehydration efficiency of the unit is reduced and the energy consumption is increased due to the fact that all the air circulation air passes through the evaporator are solved. Meanwhile, the air quantity and the speed of air circulating air passing through the condenser and the evaporator are greatly reduced, the quantity of sludge and dust entering and adhering to the fins of the two evaporators is greatly reduced, the corrosion degree and the corrosion speed of the two evaporators, particularly the evaporator, are reduced, and the service life of a unit is prolonged. When the high-temperature heat pump unit returns air, the air circulating air containing wet sludge moisture is cooled twice through the heat exchange core and the evaporator, so that the dew point temperature of the air circulating air containing wet sludge moisture is greatly reduced, and the dehydration efficiency is improved; meanwhile, the dehydrated drying circulating air is heated twice by the heat exchange core and the second condenser to obtain dry high-temperature hot air, and the drying circulating air plays a role in accelerating the evaporation of moisture in wet sludge.
In one embodiment, the air outlet of the evaporator is opposite to the air inlet of the second condenser.
In one embodiment, the condenser further comprises a closed water circulation system, the circulation system is formed by connecting a circulating water pump, a water pipe and a heat extraction water coil, and the heat extraction water coil is arranged at the air inlet of the first condenser.
In one embodiment, the circulating fan is separated from the return air circulating channel by a sheet metal part.
In one embodiment, the heat exchange core is an orthogonal heat exchange core.
In one embodiment, a baffle is disposed within the heat exchange core.
Drawings
FIG. 1 is a first structural diagram of a high temperature heat pump unit for sludge drying according to the present invention;
FIG. 2 is a second structural diagram of a high temperature heat pump unit for sludge drying of the present invention;
1. a first condenser; 2. a second condenser; 3. an evaporator; 4. a circulating fan; 5. a heat exchange core; 6. a return air circulation channel; 7. the first path of air circulation wind; 8. the second path of air circulation wind; 9. a heat and water discharging coil.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present.
For convenience of description, the terms "left", "right", "up" and "down" used hereinafter are the same as the left, right, up and down directions of the drawings, but do not limit the structure of the present invention.
A high-temperature heat pump unit for drying sludge comprises a closed heat pump dehumidification system, a plurality of circulating fans 4, an orthogonal heat exchange core 5 and a return air circulating channel 6, wherein the closed heat pump dehumidification system is formed by sequentially connecting a compressor, a first condenser 1, a second condenser 2, a drying filter, a thermal expansion valve and evaporator 3 and a gas-liquid separator through pipelines, the first condenser 1 is arranged above the second condenser 2, the first condenser 1 and the second condenser 2 divide air circulating air into two paths, and a first path of air circulating air 7 is communicated with an air inlet of the first condenser 1;
the high-temperature heat pump unit adopts double condensers and is of a structure which is arranged up and down, and air circulating air is divided into two parts, so that the problems that the load is large, the unit dehydration efficiency is reduced and the energy consumption is increased due to the fact that all the air circulating air passes through the evaporator 3 are avoided. Meanwhile, the air quantity and the speed of air circulating air passing through the condenser and the evaporator 3 are greatly reduced, the quantity of sludge and dust entering and adhering to the fins of the two evaporators is greatly reduced, the corrosion degree and the corrosion speed of the two evaporators, particularly the evaporator 3, are reduced, and the service life of the unit is prolonged.
The heat exchange core body 5 is arranged between the second condenser 2 and the evaporator 3, the second path of air circulating air 8 is communicated with a vertical channel air inlet of the heat exchange core body 5, a vertical channel air outlet of the heat exchange core body 5 is communicated with an air inlet of the evaporator 3, an air outlet of the evaporator 3 is communicated with a horizontal channel air inlet of the heat exchange core body 5, a horizontal channel air outlet of the heat exchange core body 5 is communicated with an air inlet of the second condenser 2, preferably, an air outlet of the evaporator 3 is aligned with an air inlet of the second condenser 2, the air outlet sides of the first condenser 1 and the second condenser 2 are provided with circulating fans 4, the circulating fans 4 are separated from the return air circulating channel 6 through sheet metal parts, and an air outlet of the return air circulating channel 6 is communicated with the vertical channel air inlet.
In this embodiment, still include by closed water circulating system, circulating system is formed by circulating water pump, water pipe and heat extraction water coil pipe 9 link to each other, and heat extraction water coil pipe 9 sets up in the air intake department of first condenser 1.
The utility model discloses heat pump set theory of operation: when the heat pump dehumidification system works, the compressor discharges high-temperature and high-pressure refrigerant gas into the first condenser 1, sensible heat is removed, the refrigerant is cooled for the first time and then enters the second condenser 2 for further condensation and heat release, and low-temperature and high-pressure refrigerant liquid is changed; the high-pressure refrigerant liquid enters the thermostatic expansion valve for expansion, then enters the evaporator 3 for evaporation, and returns to the compressor after evaporation, thus completing the heat pump dehumidification cycle.
The circulating fan 4 performs drying air circulation, and a first path of air circulating air 7 enters the first condenser 1 to heat and circulate after passing through a heat discharging water coil 9 at an air inlet of the first condenser 1 to take sensible heat of a refrigerant in the first condenser 1 out, so that the refrigerant is condensed for the first time.
When the temperature of the drying room reaches the heat extraction temperature set by the unit, the circulating water pump is started, the heat extraction water coil pipe 9 forms water circulation flow, and redundant heat in the drying room (box) is exhausted out of the drying room (box) through the water circulation. Because the heat of the circulating air entering the first condenser 1 is taken away by the circulating water in the water coil, the temperature of the circulating air entering the first condenser 1 is reduced, the operation load of the compressor is reduced at once, the compressor can normally operate, and meanwhile, the operation efficiency of the compressor is improved.
The second path of air circulation air 8 enters a vertical channel of the heat exchange core body 5, is folded to enter the evaporator 3 under the action of the sheet metal partition plate, enters a horizontal channel of the heat exchange core body 5 after coming out, enters the second condenser 2 after coming out, and finally finishes the dehydration heating cycle after coming out of the second condenser 2.
When the first path of air circulation air 7 enters the first condenser 1, sensible heat of high-temperature refrigerant gas discharged by a compressor is taken away through fins of the first condenser 1, the refrigerant is condensed for the first time, the heated first path of air circulation air 7 is directly blown to wet sludge by a fan to heat and evaporate moisture of the wet sludge, the humidity of the circulation air is increased after the first path of air circulation air 7 obtains water vapor, and the wet and hot air circulation air containing the moisture of the wet sludge is formed after the air circulation air 7 circularly enters a return air channel.
The hot and humid air circulation wind enters the vertical passage of the heat exchange core 5. In the vertical channel, the damp and hot air circulation wind exchanges heat with low-temperature wind which comes out from the evaporator 3 and enters the horizontal channel of the heat exchange core body 5, the temperature of the damp and hot air circulation wind is further reduced, and the damp and hot air circulation wind is folded to enter the evaporator 3 to be cooled and dehydrated under the action of the sheet metal partition plate after coming out. The wet hot air circulated air after dehydration comes out and gets into the horizontal passageway of heat exchange core 5, carry out the heat exchange with the wet hot air circulated air in perpendicular passageway, the temperature rises and the drying, get into second condenser 2 after coming out, second condenser 2 is again to the circulated air heating of accomplishing the dehydration, come out from second condenser 2 and directly blow to wet mud by circulating fan 4 with first way air circulated air 7 together, heat and evaporate moisture wet mud, the circulated air has increased the humidity of circulated air after getting steam, the circulation gets back to in the return air passageway of unit.
When the high-temperature heat pump unit returns air, the air circulation air containing wet sludge moisture is cooled twice through the heat exchange core body 5 and the evaporator 3, so that the dew point temperature of the air circulation air containing wet sludge moisture is greatly reduced, and the dehydration efficiency is improved; meanwhile, the dehydrated drying circulating air is heated twice by the heat exchange core body 5 and the second condenser 2 to obtain dry high-temperature hot air, and the effect of accelerating evaporation of moisture in wet sludge is achieved.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A high-temperature heat pump unit for drying sludge is characterized by comprising a heat pump dehumidification system, a plurality of circulating fans, a heat exchange core body and a return air circulating channel, wherein the heat pump dehumidification system comprises a compressor, a first condenser, a second condenser, a drying filter, a thermal expansion valve and an evaporator which are sequentially connected to the same loop through pipelines;
the heat exchange core body is arranged between the second condenser and the evaporator, the second path of air circulating air is communicated with a vertical channel air inlet of the heat exchange core body, a vertical channel air outlet of the heat exchange core body is communicated with an air inlet of the evaporator, an air outlet of the evaporator is communicated with a horizontal channel air inlet of the heat exchange core body, a horizontal channel air outlet of the heat exchange core body is communicated with an air inlet of the second condenser, circulating fans are arranged on the air outlet sides of the first condenser and the second condenser, the circulating fans are separated from a return air circulating channel, and an air outlet of the return air circulating channel is communicated with a vertical channel air inlet of the heat exchange.
2. The high-temperature heat pump unit for sludge drying according to claim 1, wherein the air outlet of the evaporator is opposite to the air inlet of the second condenser.
3. The high-temperature heat pump unit for sludge drying according to claim 1, further comprising a closed water circulation system formed by connecting a circulating water pump, a water pipe and a heat extraction water coil, wherein the heat extraction water coil is arranged at the air inlet of the first condenser.
4. The high temperature heat pump unit for sludge drying of claim 1, wherein the circulating fan is separated from the return air circulating channel by a sheet metal part.
5. The high-temperature heat pump unit for sludge drying according to claim 1, wherein the heat exchange core is an orthogonal heat exchange core.
6. The high-temperature heat pump unit for sludge drying according to claim 1, wherein a partition plate is arranged in the heat exchange core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581259.8U CN210425998U (en) | 2019-04-25 | 2019-04-25 | High-temperature heat pump unit for drying sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581259.8U CN210425998U (en) | 2019-04-25 | 2019-04-25 | High-temperature heat pump unit for drying sludge |
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| CN210425998U true CN210425998U (en) | 2020-04-28 |
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| CN201920581259.8U Active CN210425998U (en) | 2019-04-25 | 2019-04-25 | High-temperature heat pump unit for drying sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776314A (en) * | 2021-11-11 | 2021-12-10 | 中建环能科技股份有限公司 | Heat exchange device |
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2019
- 2019-04-25 CN CN201920581259.8U patent/CN210425998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776314A (en) * | 2021-11-11 | 2021-12-10 | 中建环能科技股份有限公司 | Heat exchange device |
| CN113776314B (en) * | 2021-11-11 | 2022-02-08 | 中建环能科技股份有限公司 | Heat exchange device |
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Effective date of registration: 20230516 Granted publication date: 20200428 |