CN211476150U - Energy-saving low-dew-point deep dehumidification system capable of continuously and stably operating - Google Patents
Energy-saving low-dew-point deep dehumidification system capable of continuously and stably operating Download PDFInfo
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- CN211476150U CN211476150U CN201922353486.8U CN201922353486U CN211476150U CN 211476150 U CN211476150 U CN 211476150U CN 201922353486 U CN201922353486 U CN 201922353486U CN 211476150 U CN211476150 U CN 211476150U
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Abstract
The utility model discloses a continuous stable operation energy-saving low dew point depth dehumidification system, the continuous stable operation energy-saving low dew point depth dehumidification system is divided into a high temperature refrigeration module and a low temperature refrigeration module, the high temperature refrigeration module is in frostless design, the low temperature refrigeration module adopts double evaporators and double flow ventilation channels with internal unique design, the use of different air channels is controlled by adding air doors, and the continuous stable operation of the refrigeration system is ensured while defrosting of the evaporators is realized; and the condensation heat of the high-temperature-level refrigeration module is used for heating the outlet air, so that the reheating power consumption of the outlet air can be reduced, the low-temperature-level evaporator can be defrosted, the defrosting time of a low-temperature-level system is shortened, and the energy-saving effect is remarkable.
Description
Technical Field
The utility model relates to a refrigeration technology field, more specifically, the utility model relates to a continuous stable operation energy-saving low dew point degree of depth dehumidification system.
Background
When the air-out dew point is lower than 0 ℃ in the current market, the runner is usually adopted to reach lower dew point temperature, the condition that the evaporator in the refrigeration system is frosted to cause the system to stop running is avoided, but when the air-out dew point is the same, the energy consumption of the runner system is about 8 percent higher than that of the refrigeration system, a regeneration air pipeline needs to be installed, and the engineering installation is also more complicated than that of the refrigeration system. The conventional refrigeration system can also adopt a heat pump defrosting or hot gas bypass method to defrost the evaporator, but the air outlet temperature is unstable due to the heat pump defrosting or the hot gas bypass, and the continuous and stable operation of the system cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not enough to aim at overcoming above-mentioned prior art's at least one, provides a low dew point degree of depth dehumidification system of continuous steady operation energy-saving, the low dew point degree of depth dehumidification system of continuous steady operation energy-saving adopts the double-flow ventiduct of double evaporation ware and inside unique design, controls the use in different wind channels through increasing the air door, when realizing that the evaporimeter melts frost, guarantees refrigerating system continuous steady operation.
The utility model adopts the following technical scheme:
a continuous stable operation energy-saving low dew point depth dehumidification system comprises an air inlet, a primary filter section, a fan section, a high temperature evaporation section, an air port, a first low temperature evaporation section, a second low temperature evaporation section, a high temperature condensation section and an air outlet which are arranged in sequence;
the continuous stable operation energy-saving low dew point deep dehumidification system is provided with a first channel and a second channel, and the first low-temperature evaporation section, the second low-temperature evaporation section and the high-temperature condensation section are positioned in the first channel;
a first air door is arranged between the first channel and the air port, a second air door is arranged between the first channel and the air outlet, a third air door and a fourth air door are further arranged at two ends of the upper layer of the first channel, and the third air door is positioned at one end close to the first air door; the upper end of one side of second passageway is equipped with the fifth air door, and first passageway and second passageway pass through the fifth air door intercommunication, and the fifth air door is located the one side that is close to the third air door, and the opposite side of second passageway is equipped with inside wind gap.
The air circulation direction of the first air door and the second air door is the X-axis axial direction, and the air circulation direction of the third air door, the fourth air door and the fifth air door is the Z-axis axial direction.
In the axial direction of the X axis, the first air door is positioned between the third air door and the fifth air door, and the third air door is close to the air port; in the axial direction of the X axis, the fourth air door is positioned between the high-temperature condensation section and the second air door, the second air door is positioned between the inner air opening and the fourth air door, and the inner air opening is close to the air outlet.
Primary filter segment for filter more than 5 mu m dust particle, the fan section is used for carrying the air to the high temperature evaporation section, the air is through the preliminary dehumidification of high temperature evaporation section, pass through first low temperature evaporation section degree of depth dehumidification again, first air door this moment, the second air door is opened, the third air door, the fourth air door, the fifth air door is closed, close the circulation of air passageway above the first passageway promptly, the air is through first low temperature evaporator section degree of depth dehumidification, send out from the air outlet after the heat of condensation backheat in the high temperature condensation section. When the first low-temperature evaporator section needs defrosting, high-temperature air from the high-temperature evaporation section naturally defrosts through the first low-temperature evaporation section, and is sent out after being cooled through the second low-temperature evaporation section and reheated by the high-temperature condenser; when the second low-temperature evaporation section needs defrosting, the refrigerating system switches the refrigerant to enter the first low-temperature evaporation section, at the moment, the first air door and the second air door are closed, and the third air door, the fourth air door and the fifth air door are opened; the high temperature air that comes from the high temperature evaporation zone passes through the third air door, first passageway, fourth air door, gets into the passageway below in the sealed wind channel from above, because the second air door is closed, consequently, the air is first through the heating of high temperature condensation section, then flow through the second low temperature evaporation zone, the second low temperature evaporation zone is by the natural defrosting of the high temperature air of circulation, after the cooling of first low temperature evaporation zone, through the fifth air door of opening, get into the second passageway, through the inside wind gap in the second passageway, see off from the air outlet again.
The high-temperature evaporation section comprises a high-temperature-stage evaporator, a first expansion valve and a first filter which are sequentially connected, and further comprises a high-temperature compressor connected with the high-temperature evaporator.
The high-temperature condensation section comprises a high-temperature air-cooled condenser and a first water-cooled condenser connected with the high-temperature air-cooled condenser, the first water-cooled condenser is connected with a first filter, and the high-temperature air-cooled condenser is connected with a high-temperature compressor.
The utility model discloses high temperature evaporation zone and high temperature condensation section constitute high temperature refrigeration module, and high temperature refrigeration module utilizes low pressure sensor control evaporating pressure, guarantees refrigerating system's frostless operation, and furthest is the moisture in the deaerate more than 0 ℃.
The first low-temperature evaporation section comprises a first low-temperature-stage evaporator, a first electromagnetic valve, a second expansion valve, a second filter, a liquid storage device, a second water-cooled condenser, a low-temperature-stage compressor, a low-pressure sensor and a gas-liquid separator which are sequentially connected, and the first low-temperature-stage evaporator is connected with the gas-liquid separator through a first one-way valve.
The second low-temperature evaporation section comprises a second low-temperature stage evaporator, a second electromagnetic valve, a second expansion valve, a second filter, a liquid storage device, a second water-cooled condenser, a low-temperature stage compressor, a low-pressure sensor and a gas-liquid separator which are sequentially connected, and the second low-temperature stage evaporator is connected with the gas-liquid separator through a second one-way valve.
The first low-temperature evaporation section and the second low-temperature evaporation section of the utility model form a low-temperature refrigeration module, and the first low-temperature evaporator is used as a low-temperature main heat exchanger; the second low-temperature-stage evaporator is used as a low-temperature-stage auxiliary heat exchanger and is used for auxiliary heat exchange during defrosting of the main heat exchanger, so that stable and continuous operation during defrosting is realized; the first low-temperature-stage evaporator and the second low-temperature-stage evaporator realize the switching of a refrigerant loop through the opening and closing of a first electromagnetic valve and a second electromagnetic valve; and a low-pressure sensor is additionally arranged on an outlet pipeline of the compressor and used for measuring the low-pressure of the refrigerant, and whether the first low-temperature-stage evaporator and the second low-temperature-stage evaporator need defrosting or not is judged according to the low-pressure value, so that the switching of an electromagnetic valve and an air door is realized.
A control method for continuously and stably operating an energy-saving low dew point deep dehumidification system comprises the following steps:
s1, primarily dehumidifying the air after the air is filtered by the primary filter section through the high-temperature evaporation section, closing the third air door, the fourth air door and the fifth air door, opening the first air door, the second air door and the first electromagnetic valve, deeply dehumidifying the air through the air port and the first air door by the first low-temperature evaporation section, and sending the air out of the air outlet after the air is subjected to condensation heat regeneration by the high-temperature condensation section;
s2, when the low-pressure sensor tests that the pressure is lower than a set value, it is indicated that the first low-temperature evaporator needs defrosting, at the moment, the first electromagnetic valve is closed, the second electromagnetic valve is opened, air coming from the air inlet defrosts the first low-temperature evaporator, the first electromagnetic valve is opened after the operation is carried out for 20-40 min, the second electromagnetic valve is closed, and the operation is continuously switched to the operation of the first low-temperature evaporation section;
s3, after the first low-temperature stage evaporation section runs for 10-20 min, the first air door and the second air door are closed, the third air door, the fourth air door and the fifth air door are opened, air passes through the third air door, the first channel and the fourth air door, is heated by the high-temperature condensation section, then flows through the second low-temperature evaporator of the second low-temperature stage evaporation section and the second low-temperature stage evaporation section, is naturally defrosted by the heated air, is cooled by the first low-temperature evaporation section, then enters the second channel through the fifth air door, and is sent out through the inner air port and the air outlet of the second channel, and the previous defrosting process is repeated when the next low-pressure sensor reaches a set value.
Compared with the prior art, the beneficial effects of the utility model are that: the energy-saving low dew point deep dehumidification system with continuous stable operation of the utility model is divided into a high temperature refrigeration module and a low temperature refrigeration module, the high temperature refrigeration module is in frost-free design, the low temperature refrigeration module adopts double evaporators and double flow ventilation ducts with unique internal design, the use of different air ducts is controlled by adding air doors, the defrosting of the evaporators is realized, the continuous stable operation of the refrigeration system is ensured, and a runner system can be replaced in the low dew point air outlet field; the utility model discloses utilize the condensation heat heating air-out of high temperature level refrigeration module, can reduce the reheat consumption of air-out, still can carry out the defrosting for low temperature level evaporimeter, reduce the defrosting time of low temperature level system, energy-conserving effect is showing.
Drawings
FIG. 1 is a schematic view of the overall wind direction of an energy-saving low dew point deep dehumidification system with continuous and stable operation according to an embodiment.
FIG. 2 is a graph showing the position of each damper and passage of the energy-saving low dew point depth dehumidification system in accordance with the embodiment.
FIG. 3 is a schematic diagram of the operation of the energy-saving low dew point deep dehumidification system with continuous and stable operation.
Description of the drawings: 1. an air inlet; 2. a primary filtering section; 3. a fan section; 4. a high-temperature evaporation section; 5. a tuyere; 6. a first damper; 7. a first low temperature evaporation stage; 8. a second low temperature evaporation stage; 9. a high temperature condensation section; 10. a second damper; 11. an air outlet; 12. a third damper; 13. a fourth damper; 14. a fifth damper; 15. a first channel; 16. a second channel; 17. a high temperature stage evaporator; 18. a first expansion valve; 19. a first filter; 20. a high temperature compressor; 21. a high temperature air-cooled condenser; 22. A first water-cooled condenser; 23. a first low temperature stage evaporator; 24. a first solenoid valve; 25. a second expansion valve; 26. a second filter; 27. a reservoir; 28. a second water-cooled condenser; 29. a low temperature stage compressor; 30. a low pressure sensor; 31. A gas-liquid separator; 32. a second low temperature stage evaporator; 33. a second solenoid valve; 34. an inner tuyere; 35. a second one-way valve; 36. a first one-way valve.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and 2, an energy-saving low dew point deep dehumidification system with continuous and stable operation comprises an air inlet 1, a primary filter section 2, a fan section 3, a high temperature evaporation section 4, an air inlet 5, a first low temperature evaporation section 7, a second low temperature evaporation section 8, a high temperature condensation section 9 and an air outlet 11 which are arranged in sequence;
the continuous stable operation energy-saving low dew point deep dehumidification system is provided with a first channel 15 and a second channel 16, and the first low-temperature evaporation section 7, the second low-temperature evaporation section 8 and the high-temperature condensation section 9 are positioned in the first channel 15;
a first air door 6 is arranged between the first channel 15 and the air outlet 5, a second air door 10 is arranged between the first channel 11 and the air outlet 11, a third air door 12 and a fourth air door 13 are further arranged at two ends of the upper layer of the first channel 11, and the third air door 12 is positioned at one end close to the first air door 6;
the upper end of one side of second passageway 12 is equipped with fifth air door 14, and first passageway 11 and second passageway 12 are through fifth air door 14 intercommunication, and fifth air door is located the one side that is close to the third air door, and the opposite side of second passageway is equipped with inside wind gap 34.
More specifically, the air flow direction of the first damper 6 and the second damper 10 is the X-axis direction, and the air flow direction of the third damper 12, the fourth damper 13, and the fifth damper 14 is the Z-axis direction.
More specifically, in the X-axis direction, the first damper 6 is located between the third damper 12 and the fifth damper 14 and the third damper 12 is close to the tuyere 5; in the axial direction of the X axis, the fourth air door 13 is positioned between the high-temperature condensation section 9 and the second air door 10, the second air door 10 is positioned between the inner air opening and the fourth air door 13, and the inner air opening 34 is close to the air outlet 11.
More specifically, the high-temperature evaporation section 4 includes a high-temperature stage evaporator 17, a first expansion valve 18, a first filter 19, and a high-temperature compressor 20 connected to the high-temperature evaporator.
More specifically, the high-temperature condensation section 9 comprises a high-temperature air-cooled condenser 21 and a first water-cooled condenser 22 connected with the high-temperature air-cooled condenser 21, wherein the first water-cooled condenser 22 is connected with the first filter 19, and the high-temperature air-cooled condenser 21 is connected with the high-temperature compressor 20.
More specifically, the first low-temperature evaporation section 7 comprises a first low-temperature stage evaporator 23, a first electromagnetic valve 24, a second expansion valve 25, a second filter 26, a liquid storage device 27, a second water-cooled condenser 28, a low-temperature stage compressor 29, a low-pressure sensor 30 and a gas-liquid separator 31 which are connected in sequence, and the first low-temperature stage evaporator 23 is connected with the gas-liquid separator 31 through a first one-way valve 36. The second low-temperature evaporation section 8 comprises a second low-temperature stage evaporator 32, a second electromagnetic valve 33, a second expansion valve 25, a second filter 26, a liquid storage device 27, a second water-cooled condenser 28, a low-temperature stage compressor 29, a low-pressure sensor 30 and a gas-liquid separator 31 which are connected in sequence, and the second low-temperature stage evaporator 32 is connected with the gas-liquid separator 31 through a second one-way valve 35. Namely, the first low-temperature evaporation section 8 and the second low-temperature evaporation section 9 share the second expansion valve 25, the second filter 26, the liquid storage device 27, the second water-cooled condenser 28, the low-temperature stage compressor 29, the low-pressure sensor 30 and the gas-liquid separator 31.
More specifically, the energy-saving low dew point deep dehumidification system capable of continuous and stable operation further comprises a control unit, and components such as each air door, each evaporator, a condenser, an expansion valve, an electromagnetic valve, a one-way valve, a pressure sensor and the like are electrically connected with the control unit
Air is filtered by a primary filter section (a primary filter) and then is sent to a high-temperature refrigeration module and a low-temperature refrigeration module by a fan; the high-temperature refrigeration module comprises an evaporator (a high-temperature-level evaporator 17), an air-cooled condenser (a high-temperature air-cooled condenser 21), a water-cooled condenser (a first water-cooled condenser 22), a filter (a first filter 19), an expansion valve (a first expansion valve 18) and the like, evaporation pressure is monitored by using a low-pressure sensor 30, frost-free operation of a refrigeration system is ensured, and moisture in air is removed to the maximum extent above 0 ℃; the low-temperature refrigeration module deeply dehumidifies the air; the low-temperature refrigeration module comprises 2 low-temperature evaporators (a first low-temperature evaporator 23 and a second low-temperature evaporator 32), a water-cooled condenser (a second water-cooled condenser 28), a liquid storage device 27, a filter (a second filter 26), an expansion valve (a second expansion valve 25), a gas-liquid separator 31 and the like, wherein the first low-temperature evaporator 23 serves as a low-temperature main heat exchanger, and the second low-temperature evaporator 32 serves as a low-temperature auxiliary heat exchanger and is used for auxiliary heat exchange during defrosting of the main heat exchanger to realize stable and continuous operation during defrosting; the first low-temperature stage evaporator 23 and the first low-temperature stage evaporator 32 realize the switching of the refrigerant loop by opening and closing the first electromagnetic valve 24 and the second electromagnetic valve 33; a low-pressure sensor 30 is added to the outlet pipeline of the compressor for measuring the low-pressure of the refrigerant, and the low-pressure value is used for judging whether the first evaporation stage evaporator 23 and the second evaporation stage evaporator 33 need defrosting, so that the switching of the electromagnetic valve and the air door is realized.
Increase air-cooled condenser in this refrigerating system's the high temperature refrigeration module, heat the air-out temperature with the condensation heat, reduce the hot consumption of air-out regeneration, when second low temperature level evaporimeter 32 defrosting, through behind the condensation heat heated air, reduce second low temperature level evaporimeter 32 defrosting time, realize the switching of low temperature owner, supplementary evaporimeter more quickly. The low-temperature refrigeration module achieves defrosting of the evaporator through the double evaporators and the double air ducts, natural defrosting is achieved for the evaporator through high-temperature air at the inlet, operation of a refrigeration system is not affected, and therefore the problems that traditional heat pump defrosting and hot air bypass defrosting lead to fluctuation of the refrigeration system and fluctuation of air outlet are solved, meanwhile, precooling is conducted on the high-temperature air at the inlet through defrosting, energy consumption required during subsequent refrigeration can be reduced, compared with the existing low-dew-point runner system, the system is reduced by about 8% in energy consumption, installation of a regeneration exhaust duct can be saved, and engineering installation amount is saved.
The control method of the energy-saving low dew point deep dehumidification system capable of continuously and stably operating in the embodiment comprises the following steps:
s1, preliminarily dehumidifying the air through the high-temperature evaporation section 4 after the air is filtered by the primary filter section 2, closing the third air door 12, the fourth air door 13 and the fifth air door 14, opening the first air door 6, the second air door 11 and the first electromagnetic valve 24, deeply dehumidifying the air through the air port 5 and the first air door 6, passing through the first low-temperature evaporation section 7, and sending the air out of the air outlet 11 after the air is condensed and reheated by the high-temperature condensation section 9;
s2, when the low-pressure sensor 30 tests that the pressure is lower than a set value, it is indicated that the first low-temperature evaporator 23 needs defrosting, at this time, the first electromagnetic valve 24 is closed, the second electromagnetic valve 33 is opened, the air from the air inlet 5 defrosts the first low-temperature evaporator 23, after 30min of operation, the first electromagnetic valve 24 is opened, the second electromagnetic valve 33 is closed, and the operation is continuously switched to the first low-temperature evaporation section 7;
s3, after the first low-temperature-stage evaporation section 7 runs for 15min, the first air door 6 and the second air door 10 are closed, the third air door 12, the fourth air door 13 and the fifth air door 14 are opened, air passes through the third air door 12, the first channel 15 and the fourth air door 13, is heated by the high-temperature condensation section 9, then flows through the second low-temperature-stage evaporation section 8, the second low-temperature evaporator 32 of the second-stage low-temperature evaporation section 8 naturally melts frost through the heated air, the air passes through the first-stage low-temperature evaporation section 7 to be cooled, then enters the second channel 16 through the fifth air door 14, then passes through the inner air opening 34 and the air outlet 11 of the second channel 16 to be sent out, and the previous defrosting process is repeated when the next low-pressure sensor 30 reaches a set value.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. An energy-saving low dew point deep dehumidification system capable of continuously and stably running is characterized by comprising an air inlet (1), a primary filter section (2), a fan section (3), a high-temperature evaporation section (4), an air port (5), a first low-temperature evaporation section (7), a second low-temperature evaporation section (8), a high-temperature condensation section (9) and an air outlet (11) which are sequentially arranged;
the continuous stable operation energy-saving low dew point deep dehumidification system is provided with a first channel (15) and a second channel (16), and the first low-temperature evaporation section (7), the second low-temperature evaporation section (8) and the high-temperature condensation section (9) are positioned in the first channel (15);
a first air door (6) is arranged between the first channel (15) and the air port (5), a second air door (10) is arranged between the first channel (15) and the air outlet (11), a third air door (12) and a fourth air door (13) are further arranged at two ends of the upper layer of the first channel (15), and the third air door (12) is located at one end close to the first air door (6);
the upper end of one side of the second channel (16) is provided with a fifth air door (14), the first channel (15) is communicated with the second channel (16) through the fifth air door (14), the fifth air door (14) is positioned on one side close to the third air door (12), and the other side of the second channel (16) is provided with an inner air opening (34).
2. The continuous stable operation energy-saving low dew point depth dehumidification system as claimed in claim 1, wherein the air flow direction of the first damper (6) and the second damper (10) is X-axis axial direction, and the air flow direction of the third damper (12), the fourth damper (13) and the fifth damper (14) is Z-axis axial direction.
3. The continuous stable operation energy saving type low dew point depth dehumidification system according to claim 1, wherein in the X-axis direction, the first damper (6) is located between the third damper (12) and the fifth damper (14) and the third damper (12) is close to the tuyere (5); in the X-axis direction, the fourth air door (13) is positioned between the high-temperature condensation section (9) and the second air door (10), the second air door (10) is positioned between the inner air opening (34) and the fourth air door (13), and the inner air opening (34) is close to the air outlet (11).
4. The continuous stable operation energy-saving low dew point depth dehumidification system according to claim 1, wherein the high temperature evaporation section (4) comprises a high temperature stage evaporator (17), a first expansion valve (18), a first filter (19) connected in sequence, and further comprises a high temperature compressor (20) connected with the high temperature evaporator.
5. The continuous stable operation energy-saving low dew point depth dehumidification system according to claim 4, wherein the high temperature condensation section (9) comprises a high temperature air-cooled condenser (21) and a first water-cooled condenser (22) connected thereto, the first water-cooled condenser (22) is connected to the first filter (19), and the high temperature air-cooled condenser (21) is connected to the high temperature compressor (20).
6. The continuous stable operation energy-saving type low dew point depth dehumidification system according to claim 1, wherein the first low temperature evaporation section (7) comprises a first low temperature stage evaporator (23), a first electromagnetic valve (24), a second expansion valve (25), a second filter (26), a liquid storage device (27), a second water-cooled condenser (28), a low temperature stage compressor (29), a low pressure sensor (30) and a gas-liquid separator (31) which are connected in sequence, and the first low temperature stage evaporator (23) is connected with the gas-liquid separator (31) through a first one-way valve (36).
7. The continuous stable operation energy-saving type low dew point depth dehumidification system according to claim 6, wherein the second low temperature evaporation section (8) comprises a second low temperature stage evaporator (32), a second electromagnetic valve (33), a second expansion valve (25), a second filter (26), a liquid storage device (27), a second water-cooled condenser (28), a low temperature stage compressor (29), a low pressure sensor (30) and a gas-liquid separator (31) which are connected in sequence, and the second low temperature stage evaporator (32) is connected with the gas-liquid separator (31) through a second one-way valve (35).
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| CN111102660A (en) * | 2019-12-23 | 2020-05-05 | 广东申菱环境系统股份有限公司 | Energy-saving low-dew-point deep dehumidification system capable of continuously and stably operating and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111102660A (en) * | 2019-12-23 | 2020-05-05 | 广东申菱环境系统股份有限公司 | Energy-saving low-dew-point deep dehumidification system capable of continuously and stably operating and control method |
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