A dehumidification system

Abstract

The utility model discloses a dehumidification system, including: a dehumidification wheel, a treatment air pipeline, a regeneration air pipeline, a heat pump system, a first pipeline, a second pipeline, a third pipeline, a first branch, a second branch, a third branch, and a fourth branch. The dehumidification wheel includes a treatment area and a regeneration area; the treatment air pipeline is used to supply gas to enter the treatment area of ​​the dehumidification wheel and to be discharged from the treatment area of ​​the dehumidification wheel; the regeneration air pipeline is used to supply gas to enter the regeneration area of ​​the dehumidification wheel. Through the combination of the heat pump system and the dehumidification wheel, the condenser of the heat pump system is used to heat the regeneration air of the dehumidification wheel, and the first evaporator of the heat pump system is used to cool and dehumidify the regeneration air intake, and the refrigerant in the first evaporator is caused to absorb heat and change into a gaseous state, the second evaporator is used to cool the treatment outlet air, and the refrigerant in the second evaporator is caused to absorb heat and change into a gaseous state, and the refrigerant is jointly supplied to the compressor, so that the heat pump system can circulate and operate normally.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification equipment, in particular to a dehumidification system. Background Art

[0002] In recent years, with the popularization of the concept of environmental protection and energy conservation, as well as the transformation of energy production and manufacturing, heat pumps have gradually replaced traditional energy sources to inject power into industrial manufacturing. Industrial manufacturing is inseparable from the use of cold and hot energy. The heat pump system can achieve cooling and heating, but it also has great limitations. If you pursue heat pump cooling, then the heating capacity is very weak, and can only produce low-grade heat sources with very low calorific value; if you use the heat pump heating capacity, then the cooling will be greatly reduced and cannot meet the needs of both cold and hot industrial production. However, in the dehumidification wheel system, the regeneration side requires a heat source and the treatment side requires a cold source. The combination of heat pump and wheel can combine the dual needs of cooling and heating to achieve a perfect match, with obvious energy-saving effects. Utility Model Content

[0003] The utility model aims to provide a dehumidification system, in which a heat pump system is used to provide a heat source for the regeneration side of the dehumidification wheel and a cold source for the treatment side, thereby meeting the dual needs of cooling and heating of the dehumidification wheel and achieving obvious energy-saving effect.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A dehumidification system, comprising:

[0006] A dehumidification wheel, the dehumidification wheel comprising a treatment zone and a regeneration zone;

[0007] a process air duct, the process air duct being used for supplying gas into the process area of ​​the dehumidification wheel and being discharged from the process area of ​​the dehumidification wheel;

[0008] a regeneration air duct, the regeneration air duct being used to supply gas into the regeneration zone of the dehumidification wheel and to discharge gas from the regeneration zone of the dehumidification wheel;

[0009] A heat pump system, the heat pump system comprising a compressor, a condenser, a first expansion valve, a second expansion valve, a first evaporator and a second evaporator;

[0010] The first evaporator and the condenser are arranged on the regeneration air duct on the air inlet side along the air flow direction of the regeneration air duct;

[0011] The second evaporator is arranged on the process air duct on the exhaust side along the air flow direction of the process air duct;

[0012] A first pipeline, wherein the first pipeline is arranged between the compressor output end and the condenser input end;

[0013] a second pipeline, one end of which is connected to the output end of the condenser;

[0014] A third pipeline, one end of which is connected to the compressor input end;

[0015] a first branch, one end of the first branch being connected to an input end of the first evaporator, and the first expansion valve being installed on the first branch;

[0016] a second branch, one end of the second branch being connected to the input end of the second evaporator, and the second expansion valve being installed on the second branch;

[0017] Wherein, the first branch and the other end of the second branch are commonly connected to the other end of the second pipeline;

[0018] a third branch, one end of the third branch being connected to the output end of the first evaporator;

[0019] a fourth branch, one end of which is connected to the output end of the second evaporator;

[0020] The other ends of the third branch and the fourth branch are commonly connected to the other end of the third pipeline.

[0021] Preferably, the dehumidification system further comprises an oil separator, and the oil separator is installed on the first pipeline.

[0022] Preferably, the dehumidification system further comprises a drying filter and a sight glass, and the drying filter and the sight glass are installed on the second pipeline.

[0023] Preferably, the filter drier and the sight glass are sequentially installed on the second pipeline along the air flow direction.

[0024] Preferably, the dehumidification system further comprises a gas-liquid separator, and the gas-liquid separator is installed on the third pipeline.

[0025] Preferably, the dehumidification system further comprises a regeneration fan, which is arranged on the regeneration air duct and located on the air inlet side or the air exhaust side.

[0026] Preferably, the dehumidification system further comprises a process fan, which is arranged on the process air duct and located on the air inlet side or the air exhaust side.

[0027] Preferably, the dehumidification system further comprises a controller, and the controller is connected to the dehumidification wheel and the heat pump system.

[0028] Preferably, the regeneration temperature of the dehumidification wheel is 60-90°C.

[0029] Preferably, the first expansion valve and the second expansion valve are both electronic expansion valves.

[0030] Compared with the prior art, the beneficial effects of the present invention include at least:

[0031] Through the combination of the heat pump system and the dehumidification wheel, the condenser of the heat pump system is used to heat the regeneration air of the dehumidification wheel, and the first evaporator of the heat pump system is used to cool and dehumidify the regeneration air intake, and the refrigerant in the first evaporator is caused to absorb heat and change into a gaseous state. The second evaporator is used to cool the treated air outlet, and the refrigerant in the second evaporator is caused to absorb heat and change into a gaseous state. The refrigerant is jointly supplied to the compressor so that the heat pump system can circulate normally. The dehumidification system uses a heat pump system to heat the regeneration airflow of the dehumidification wheel. Compared with traditional electric heating and steam heating, the heating efficiency is improved, the energy is fully utilized, and it can replace part of the refrigeration load of the regeneration air intake and the treated air outlet. The whole system is more efficient, energy-saving and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a dehumidification system according to an embodiment of the utility model.

[0033] In the figure: 1. dehumidification wheel; 2. treatment air duct; 3. regeneration air duct; 4. compressor; 5. condenser; 6. first expansion valve; 7. second expansion valve; 8. first evaporator; 9. second evaporator; 10. first pipeline; 11. second pipeline; 12. third pipeline; 13. first branch; 14. second branch; 15. third branch; 16. fourth branch; 17. oil separator; 18. drying filter; 19. sight glass; 20. gas-liquid separator. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0035] The words expressing positions and directions described in the present utility model are all explained by taking the drawings as examples, but they can be changed as needed, and all the changes are included in the protection scope of the present utility model.

[0036] Reference Figure 1 The utility model provides a dehumidification system, including: a dehumidification wheel 1, a treatment air duct 2, a regeneration air duct 3, a heat pump system, a first duct 10, a second duct 11, a third duct 12, a first branch 13, a second branch 14, a third branch 15, and a fourth branch 16.

[0037] The dehumidification wheel 1 includes a treatment area and a regeneration area; wherein the dehumidification wheel 1 is preferably a medium-temperature dehumidification wheel. Compared with a traditional high-temperature dehumidification wheel, the medium-temperature dehumidification wheel can be regenerated at a lower temperature under the same dehumidification effect, which can achieve energy saving effect, and the regeneration temperature of the dehumidification wheel 1 is preferably 60-90° C. The specific structure of the dehumidification wheel 1 can adopt known technology, which will not be described in detail here.

[0038] The treatment air duct 2 is used to supply gas to enter the treatment area of ​​the dehumidification wheel 1 and be discharged from the treatment area of ​​the dehumidification wheel 1; wherein, the dehumidification system may also include a treatment fan (not shown), which is arranged on the treatment air duct 2 and is located on the air inlet side or the air exhaust side. Under the action of the treatment fan, a treatment air flow can be generated in the treatment air duct 2, so that the treatment air flow passes through the treatment area of ​​the dehumidification wheel 1, thereby dehumidifying and drying the treatment air flow.

[0039] The regeneration air duct 3 is used to supply gas to enter the regeneration zone of the dehumidification wheel 1 and be discharged from the regeneration zone of the dehumidification wheel 1; wherein, the dehumidification system may also include a regeneration fan (not shown), which is arranged on the regeneration air duct 3 and is located on the air inlet side or the air exhaust side. Under the action of the regeneration fan, a regeneration air flow can be generated in the regeneration air duct 3, so that the regeneration air flow flows through the regeneration zone of the dehumidification wheel 1, thereby causing the dehumidification regeneration of the dehumidification wheel 1 when passing through the regeneration zone.

[0040] The heat pump system includes a compressor 4, a condenser 5, a first expansion valve 6, a second expansion valve 7, a first evaporator 8 and a second evaporator 9; wherein the first expansion valve 6 and the second expansion valve 7 are both electronic expansion valves, which can throttle the refrigerant in the heat pump system to maintain the normal operation of the heat pump system.

[0041] The first evaporator 8 and the condenser 5 are arranged on the regeneration air duct 3 on the air inlet side along the air flow direction of the regeneration air duct 3, that is, the regeneration air first passes through the first evaporator 8 and the condenser 5 in sequence before flowing through the regeneration zone. This part arranges the first evaporator 8 before the condenser 5. When the regeneration air flows through the first evaporator 8, the regeneration air flow can exchange heat with the first evaporator 8, causing the refrigerant inside it to heat up and gasify, while reducing the temperature of the regeneration air flow, cooling and dehumidifying the regeneration air flow, and improving the dryness of the regeneration air flow. The subsequent low-temperature dry regeneration air flow becomes a high-temperature dry regeneration air flow after passing through the condenser 5. The low-temperature dry regeneration air flow can be heated by heat exchange with the condenser 5, thereby improving the regeneration effect of the regeneration zone of the dehumidification wheel 1.

[0042] The second evaporator 9 is arranged on the process air duct 2 on the exhaust side along the air flow direction of the process air duct 2, that is, the process air flows through the treatment area of ​​the dehumidification wheel 1 and then flows to the second evaporator 9; the process air flow in the process air duct 2 exchanges heat with the second evaporator 9, which will also cause the refrigerant inside it to heat up and vaporize. At the same time, the temperature of the process air flow is reduced, which can effectively control the temperature of the process air flow.

[0043] The first pipeline 10 is arranged between the output end of the compressor 4 and the input end of the condenser 5; wherein, the dehumidification system can also include an oil separator 17, and the oil separator 17 is installed on the first pipeline 10. The function of the oil separator 17 here is to separate the lubricating oil in the high-temperature and high-pressure refrigerant gas discharged from the compressor 4 to ensure the safe and efficient operation of the system.

[0044] One end of the second pipeline 11 is connected to the output end of the condenser 5 . The high-temperature and high-pressure refrigerant discharged from the output end of the compressor 4 passes through the condenser 5 and exchanges heat with the regeneration air pipeline 3 to become a low-temperature and high-pressure refrigerant, and is discharged through the second pipeline 11 .

[0045] One end of the third pipeline 12 is connected to the input end of the compressor 4 , and the refrigerant discharged from the first evaporator 8 and the second evaporator 9 can be transported to the compressor 4 through the third pipeline 12 .

[0046] One end of the first branch 13 is connected to the input end of the first evaporator 8, and the first expansion valve 6 is installed on the first branch 13. The first expansion valve 6 can achieve throttling of the refrigerant in the first branch 13, thereby creating conditions for the evaporation of the refrigerant, turning it into a low-temperature, low-pressure mist-like liquid refrigerant, thereby ensuring the normal operation of the first evaporator 8.

[0047] One end of the second branch 14 is connected to the input end of the second evaporator 9, and the second expansion valve 7 is installed on the second branch 14. The second expansion valve 7 can be used to throttle the refrigerant in the second branch 14, thereby creating conditions for the evaporation of the refrigerant, turning it into a low-temperature, low-pressure mist-like liquid refrigerant, thereby ensuring the normal operation of the second evaporator 9.

[0048] The other ends of the first branch 13 and the second branch 14 are connected to the other end of the second pipeline 11, so that the refrigerant in the second pipeline 11 is split through the first branch 13 and the second branch 14, and can provide refrigerant to the first evaporator 8 and the second evaporator 9 respectively.

[0049] One end of the third branch 15 is connected to the output end of the first evaporator 8 , so as to discharge the low-pressure refrigerant gas of the first evaporator 8 .

[0050] One end of the fourth branch 16 is connected to the output end of the second evaporator 9 so as to discharge the low-pressure refrigerant gas of the second evaporator 9 .

[0051] Among them, the other ends of the third branch 15 and the fourth branch 16 are commonly connected to the other end of the third pipeline 12, so as to collect the refrigerant gas of the first evaporator 8 and the second evaporator 9, and transport them to the compressor 4 through the third pipeline 12; wherein, the dehumidification system can also include a gas-liquid separator 20, and the gas-liquid separator 20 is installed on the third pipeline 12. The gas-liquid separator 20 can separate and preserve the refrigerant liquid in the third pipeline 12, effectively preventing the refrigerant liquid from hitting the compressor 4, and ensuring the normal operation of the compressor 4.

[0052] Therefore, through the combination of the heat pump system and the dehumidification wheel 1, the condenser 5 of the heat pump system is used to heat the regeneration air of the dehumidification wheel 1, and the first evaporator 8 of the heat pump system is used to cool and dehumidify the regeneration intake air, and the refrigerant in the first evaporator 8 is caused to absorb heat and change into a gaseous state. The second evaporator 9 is used to cool the treated outlet air, and the refrigerant in the second evaporator 9 is caused to absorb heat and change into a gaseous state, and the refrigerant is jointly supplied to the compressor 4 so that the heat pump system can circulate normally. The dehumidification system uses a heat pump system to heat the regeneration airflow of the dehumidification wheel 1. Compared with traditional electric heating and steam heating, the heating efficiency is improved, the energy is fully utilized, and it can replace part of the refrigeration load of the regeneration intake air and the treated outlet air. The entire system is more efficient, energy-saving and stable.

[0053] In a preferred embodiment, the dehumidification system further includes a filter dryer 18 and a sight glass 19, which are installed on the second pipeline 11. Specifically, the filter dryer 18 and the sight glass 19 are installed on the second pipeline 11 in sequence along the airflow direction. The filter dryer 18 can be used to collect solid impurities in the second pipeline 11 to prevent the components in the heat pump system from being blocked and ensure that the internal pipelines of the system are unobstructed; the quality and liquid amount of the refrigerant in the second pipeline 11 can be determined through the sight glass 19, so as to judge whether the amount of refrigerant in the heat pump system of the dehumidification system is appropriate, whether it needs to be supplemented, etc., and the drying effect of the upstream filter dryer 18 can also be judged.

[0054] In a preferred embodiment, the dehumidification system also includes a controller (not shown), which can be a personal computer, a server, a programmable logic controller (PLC controller), a single-chip microcomputer, etc., or an integration of computer devices. The controller is connected to the dehumidification wheel 1 and the heat pump system. The dehumidification effect of the dehumidification wheel 1 and the cooling and heating efficiency of the heat pump system can be controlled by the controller, so that the dehumidification system maintains a state of cold and heat balance.

[0055] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the utility model. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the utility model.

Claims

1. A dehumidification system, characterized in that: include: A dehumidification wheel (1), the dehumidification wheel (1) comprising a treatment area and a regeneration area; a processing air duct (2), the processing air duct (2) being used for supplying gas into the processing area of ​​the dehumidification wheel (1) and for discharging gas from the processing area of ​​the dehumidification wheel (1); A regeneration air duct (3), the regeneration air duct (3) being used to supply gas into the regeneration zone of the dehumidification wheel (1) and to discharge gas from the regeneration zone of the dehumidification wheel (1); A heat pump system, the heat pump system comprising a compressor (4), a condenser (5), a first expansion valve (6), a second expansion valve (7), a first evaporator (8) and a second evaporator (9); The first evaporator (8) and the condenser (5) are arranged on the regeneration air duct (3) at the air inlet side along the air flow direction of the regeneration air duct (3); The second evaporator (9) is arranged on the process air duct (2) at the exhaust side along the air flow direction of the process air duct (2); A first pipeline (10), the first pipeline (10) being arranged between an output end of the compressor (4) and an input end of the condenser (5); A second pipeline (11), one end of the second pipeline (11) being connected to an output end of the condenser (5); a third pipeline (12), one end of the third pipeline (12) being connected to an input end of the compressor (4); A first branch (13), one end of the first branch (13) being connected to an input end of the first evaporator (8), and the first expansion valve (6) being installed on the first branch (13); a second branch (14), one end of the second branch (14) being connected to an input end of the second evaporator (9), and the second expansion valve (7) being installed on the second branch (14); The other ends of the first branch (13) and the second branch (14) are connected to the other end of the second pipeline (11); a third branch (15), one end of the third branch (15) being connected to the output end of the first evaporator (8); a fourth branch (16), one end of the fourth branch (16) being connected to the output end of the second evaporator (9); The other ends of the third branch (15) and the fourth branch (16) are commonly connected to the other end of the third pipeline (12).

2. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises an oil separator (17), and the oil separator (17) is installed on the first pipeline (10).

3. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises a drying filter (18) and a sight glass (19), and the drying filter (18) and the sight glass (19) are installed on the second pipeline (11).

4. The dehumidification system according to claim 3, characterized in that: The drying filter (18) and the sight glass (19) are sequentially installed on the second pipeline (11) along the air flow direction.

5. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises a gas-liquid separator (20), and the gas-liquid separator (20) is installed on the third pipeline (12).

6. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises a regeneration fan, which is arranged on the regeneration air duct (3) and is located on the air inlet side or the air outlet side.

7. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises a process fan, which is arranged on the process air pipeline (2) and is located on the air inlet side or the air outlet side.

8. The dehumidification system according to claim 1, characterized in that: The dehumidification system further comprises a controller, which is connected to the dehumidification wheel (1) and the heat pump system.

9. The dehumidification system according to claim 1, characterized in that: The regeneration temperature of the dehumidification wheel (1) is 60-90°C.

10. The dehumidification system according to any one of claims 1 to 9, characterized in that: The first expansion valve (6) and the second expansion valve (7) are both electronic expansion valves.

Images