Surface air cooler and double-rotating-wheel dehumidifier with same

Abstract

The utility model discloses a surface air cooler and a double-rotating-wheel dehumidifier with the surface air cooler, and belongs to the technical field of refrigeration and dehumidification equipment, the surface air cooler comprises a rack and at least two groups of heat exchange coil pipes arranged in the rack; partial positions among the heat exchange coil pipes are staggered and overlapped in the vertical direction; heat exchange fins are arranged on the periphery of the heat exchange coil pipe side by side; the planes where the heat exchange fins are located are parallel to one another. The distance between every two adjacent heat exchange fins ranges from 1.2 mm to 3.6 mm. The distance between the heat exchange coils is compressed in a staggered stacking mode, so that the number of the heat exchange coils is increased under the condition that the size of the surface air cooler is not changed, the overall dehumidification and temperature control capacity is improved, meanwhile, the distance between the heat exchange fins is limited, the heat exchange area between equipment and fresh air can be effectively increased, and the heat exchange efficiency is improved. And therefore, the fresh air treatment effect of the surface air cooler is improved under the joint cooperation of the heat exchange coil and the heat exchange fins.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration and dehumidification equipment, and particularly relates to a surface cooler and a double-rotor dehumidifier with the surface cooler. Background Art

[0002] Existing industrial dehumidifiers, especially rotary dehumidifiers, often use the following measures to control temperature and humidity in low dew point working environments in order to ensure the temperature and humidity control effect and energy saving and consumption reduction:

[0003] 1) Increase the inlet and outlet water temperatures of the fresh air cooler to ensure that the suction temperature of the compressor of the air conditioner main unit that supplies the coolant to the cooler remains at a relatively high level, so that the compressor works in a more efficient working curve area, thereby achieving energy saving;

[0004] 2) Reduce the processing load of the fresh air cooler and reduce the size of the cooler;

[0005] 3) When using double-rotor dehumidification, increase the thickness of the rear-stage rotor to improve the dehumidification effect of the rear-stage rotor;

[0006] 4) When using dual-wheel dehumidification, increase the regeneration air volume and regeneration temperature of the first and second wheels to achieve the dehumidification effect expected by the design requirements.

[0007] Compared with the rough control measures when the rotary dehumidifier was first used, the above improvements have improved performance, but the energy saving effect is not ideal. The following problems still exist in actual use:

[0008] 1) Increasing the inlet and outlet water temperatures of the fresh air cooler reduces the total cooling capacity of the refrigeration unit and improves the working efficiency of the compressor, but increases the dehumidification workload of the secondary wheel. At the same time, in order to ensure the dehumidification effect of the primary wheel, it is necessary to increase the regeneration temperature of the primary wheel or increase the regeneration air volume, thereby increasing the energy consumption of the equipment in disguised form;

[0009] 2) As the air inlet temperature of the secondary wheel increases, in order to ensure the dehumidification capacity of the secondary wheel, it is necessary to add an intermediate surface cooler or increase the cooling load of the intermediate surface cooler. At the same time, the regeneration temperature of the secondary wheel must be increased, that is, the heat load of the regeneration heating needs to be increased;

[0010] 3) Because the outlet air temperature of the secondary wheel increases, it is necessary to add an aftercooler or increase the cooling load of the aftercooler. Utility Model Content

[0011] The technical problem to be solved by the utility model is: how to provide a surface cooler which can ensure the temperature and humidity control effect and reduce energy consumption, and a double-rotor dehumidifier with the surface cooler.

[0012] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0013] A surface cooler comprises a frame and at least two groups of heat exchange coils arranged inside the frame;

[0014] Part of the positions between the heat exchange coils are staggered and superimposed in the vertical direction;

[0015] The periphery of the heat exchange coil is provided with heat exchange fins arranged side by side;

[0016] The planes where the heat exchange fins are located are parallel to each other;

[0017] The spacing between the heat exchange fins is 1.2 mm to 3.6 mm.

[0018] Further, a refrigeration system is included;

[0019] The refrigeration system and the heat exchange coil constitute a refrigeration circuit;

[0020] The refrigeration system comprises a pump body;

[0021] The liquid outlet of the pump body is communicated with the liquid outlet of the heat exchange coil.

[0022] Furthermore, the diameter of the heat exchange coil is 7 mm to 19.05 mm.

[0023] Furthermore, the tube spacing of the heat exchange coil is 12mm~25mm.

[0024] Furthermore, a double-rotor dehumidifier is provided, comprising the above-mentioned surface cooler, and a fresh air valve, a coarse-effect filter, a primary rotor, a primary treatment fan, a medium heat exchanger, a medium-efficiency filter, a secondary rotor, a secondary treatment fan, a post-heat exchanger and an air supply valve arranged in sequence along the fresh air flow direction;

[0025] The surface cooler is located between the coarse filter and the primary rotor.

[0026] Furthermore, a portion of the fresh air passes through the primary processing fan and the secondary rotor in sequence to form a regeneration branch flow.

[0027] Furthermore, it also includes a primary regeneration heater, a secondary regeneration heater and a regeneration fan;

[0028] The regeneration air passes through the secondary regeneration heater, the primary regeneration heater and the regeneration fan in sequence to form a regeneration main path;

[0029] The flow direction of the regeneration air is opposite to the flow direction of the fresh air;

[0030] The regeneration branch flow is connected to the regeneration main path through a secondary regeneration heater.

[0031] The beneficial effects of the present invention are as follows: the surface cooler provided by the present invention has a simple structure and is easy to use. The distance between the heat exchange coils is compressed in the vertical direction by staggered superposition, thereby increasing the number of heat exchange coils without changing the size of the surface cooler to improve the overall dehumidification and temperature control capabilities. At the same time, the spacing between the heat exchange fins is limited, which can effectively increase the heat exchange area of ​​the surface cooler with the fresh air, thereby improving the treatment effect of the surface cooler on the fresh air with the cooperation of the heat exchange coils and the heat exchange fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Shown is a schematic structural diagram of a surface cooler according to a specific embodiment of the utility model;

[0033] Figure 2 Shown is a cross-sectional view of a surface cooler according to a specific embodiment of the utility model;

[0034] Figure 3 Shown is a structural schematic diagram of another surface cooler according to a specific embodiment of the utility model;

[0035] Figure 4 Shown is a working principle diagram of a double-rotor dehumidifier according to a specific embodiment of the utility model;

[0036] Description of labels:

[0037] 1. Surface cooler; 11. Rack; 12. Heat exchange coil; 13. Heat exchange fins;

[0038] 2. Double-rotor dehumidifier; 21. Fresh air valve; 22. Coarse filter; 23. Primary rotor; 24. Primary treatment fan; 25. Medium heat exchanger; 26. Medium filter; 27. Secondary rotor; 28. Secondary treatment fan; 29. ​​Post-heat exchanger; 210. Supply air valve; 211. Primary regeneration heater; 212. Secondary regeneration heater; 213. Regeneration fan;

[0039] 3. Space to be dehumidified. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0041] The most critical concept of the present invention is that the distance between the heat exchange coils is compressed by staggered superposition, so that the number of heat exchange coils is increased without changing the size of the surface cooler, so as to improve the overall dehumidification and temperature control capabilities, and at the same time, the spacing between the heat exchange fins is limited, which can effectively increase the heat exchange area between the equipment and the fresh air, and then the treatment effect of the surface cooler on the fresh air is improved with the cooperation of the heat exchange coils and the heat exchange fins.

[0042] Please refer to Figures 1 to 4 The surface cooler provided by the utility model comprises a frame 11 and at least two groups of heat exchange coils 12 arranged inside the frame 11;

[0043] Part of the positions between the heat exchange coils 12 are staggered and superimposed in the vertical direction;

[0044] The outer periphery of the heat exchange coil 12 is provided with heat exchange fins 13 arranged side by side;

[0045] The planes on which the heat exchange fins 13 are located are parallel to each other;

[0046] The spacing between the heat exchange fins 13 is 1.2 mm to 3.6 mm.

[0047] From the above description, it can be seen that the beneficial effect of the utility model is: to provide a surface cooler, which compresses the distance between the heat exchange coils 12 by staggered superposition, thereby increasing the number of heat exchange coils 12 without changing the size of the surface cooler, so as to improve the overall dehumidification and temperature control ability, and at the same time strictly control the spacing of the heat exchange fins 13, which can effectively increase the heat exchange area between the equipment and the fresh air, and then improve the treatment effect of the surface cooler on the fresh air with the cooperation of the heat exchange coils 12 and the heat exchange fins 13.

[0048] Furthermore, the above-mentioned surface cooler also includes a refrigeration system;

[0049] The refrigeration system and the heat exchange coil 12 form a refrigeration circuit;

[0050] The refrigeration system includes a pump body;

[0051] The liquid outlet of the pump body is communicated with the liquid outlet of the heat exchange coil 12 .

[0052] From the above description, it can be seen that the design provides structural support for the surface cooler to continuously maintain a constant low temperature, and the staff can control the flow rate of the refrigerant by changing the flow rate of the pump body, so that the refrigerant is maintained within the rated flow rate range or the flow rate of the refrigerant is reduced by 33.3%, so that the refrigerant in the heat exchange coil 12 can fully absorb the heat in the fresh air gas, convert the high-temperature water vapor in the fresh air into condensed water, and thus improve the overall dehumidification efficiency.

[0053] Furthermore, a water-conducting layer is provided on the outer surface of the heat exchange fin 13. Specifically, the water-conducting layer can be a hydrophilic aluminum film or a non-hydrophilic aluminum film, and the condensed water on the surface of the heat exchange fin can be removed by water absorption and evaporation or hydrophobic drainage; the water-conducting layer can also be coated with an acrylic resin having a water absorption function, or coated with an epoxy propylene resin having a hydrophobic function to achieve the same water removal effect as above.

[0054] It can be seen from the above description that this design can make the condensed water slide off the heat exchange fins 13 quickly, thereby avoiding a large amount of condensed water remaining on the heat exchange fins 13, which affects the cooling and dehumidification efficiency of the fresh air.

[0055] Furthermore, the diameter of the heat exchange coil 12 is 7 mm to 19.05 mm.

[0056] Furthermore, the tube spacing of the heat exchange coil 12 is 12 mm to 25 mm.

[0057] From the above description, it can be seen that by controlling the relevant parameters of the heat exchange coil 12 within the above range, the heat exchange coil 12, in cooperation with the heat exchange fins 13, can effectively expand the inlet and outlet water temperature difference of the refrigerant in the heat exchange coil 12, that is, only low-temperature water needs to be introduced to generate high-temperature water after heat exchange that can meet the normal working temperature of the peripheral related compressor equipment, thereby saving energy consumption caused by the need to simultaneously increase the inlet and outlet water temperatures of the refrigerant.

[0058] The utility model also provides a double-rotor dehumidifier 2, comprising any of the above-mentioned surface coolers 1, and a fresh air valve 21, a coarse filter 22, a primary rotor 23, a primary treatment fan 24, a medium heat exchanger 25, a medium filter 26, a secondary rotor 27, a secondary treatment fan 28, a rear heat exchanger 29 and an air supply valve 210 arranged in sequence along the fresh air flow direction;

[0059] The surface cooler 1 is located between the coarse filter 22 and the primary rotor 23 .

[0060] Furthermore, in the above-mentioned dual-rotor dehumidifier 2, a part of the fresh air passes through the primary processing fan 24 and the secondary rotor 27 in sequence to form a regeneration branch flow.

[0061] Furthermore, the above-mentioned dual-rotor dehumidifier 2 further includes a primary regeneration heater 211, a secondary regeneration heater 212 and a regeneration fan 213;

[0062] The regeneration wind passes through the secondary regeneration heater 212, the primary regeneration heater 211 and the regeneration fan 213 in sequence to form a regeneration main path;

[0063] The flow direction of the regeneration air is opposite to that of the fresh air;

[0064] The regeneration branch flow is connected to the regeneration main path through the secondary regeneration heater 212 .

[0065] From the above description, it can be seen that the design provides a dual-rotor dehumidifier 2 with the above-mentioned surface cooler 1. Since the dual-rotor dehumidifier 2 cooperates with the surface cooler 1, it is possible to expand the temperature difference between the inlet and outlet water of the surface cooler 1 and improve the pre-dehumidification effect of the fresh air, thereby effectively reducing the working energy consumption of each heat exchanger, each wheel and each regeneration heater, thereby improving the dehumidification efficiency while achieving the purpose of energy saving and emission reduction.

[0066] The surface cooler of the utility model can assist the dehumidification work of fresh air.

[0067] Please refer to Figure 1 to Figure 2 , Embodiment 1 of the present utility model is:

[0068] A surface cooler comprises a frame 11 and a refrigeration system, and two groups of heat exchange coils 12 arranged inside the frame 11; parts of the heat exchange coils 12 are staggered and stacked in the vertical direction; heat exchange fins 13 arranged side by side are arranged on the periphery of the heat exchange coils 12; the planes where the heat exchange fins 13 are located are parallel to each other; and the spacing between the heat exchange fins 13 is 1.5 mm.

[0069] The refrigeration system and the heat exchange coil 12 form a refrigeration circuit; the refrigeration system includes a pump body; the liquid outlet of the pump body is connected to the liquid outlet of the heat exchange coil 12.

[0070] The outer surface of the heat exchange fin 13 is provided with a water conducting layer.

[0071] The diameter of the heat exchange coil 12 is 10 mm; the distance between the tubes of the heat exchange coil 12 is 19.05 mm.

[0072] The difference between the second embodiment of the present invention and the first embodiment is that:

[0073] Only one set of heat exchange coils 12 is arranged inside the frame 11; when the equipment is used in some places where the humidity requirements are not too strict, on the basis of ensuring the normal dehumidification work, by reducing the number of heat exchange coils 12, the overall size of the surface cooler 1 can be effectively compressed, thereby making the equipment more compact.

[0074] Reference Figure 3 The difference between the third embodiment of the present invention and the first embodiment is that:

[0075] The surface coolers 1 can be arranged in multiple groups side by side; the number of the surface coolers 1 in the present embodiment is three groups; the air outlet and air inlet ends of each group of surface coolers 1 are connected in sequence to form a group of surface coolers 1, thereby indirectly extending the cooling and dehumidification path of the fresh air to meet the temperature and humidity requirements of large dehumidification areas.

[0076] The fourth embodiment of the present utility model is:

[0077] Reference Figure 4A double-rotor dehumidifier 2 comprises a primary regenerative heater 211, a secondary regenerative heater 212, a regenerative fan 213, and a fresh air valve 21, a coarse-effect filter 22, a surface cooler 1, a primary rotor 23, a primary treatment fan 24, a medium heat exchanger 25, a medium-efficiency filter 26, a secondary rotor 27, a secondary treatment fan 28, a post-heat exchanger 29 and an air supply valve 210 which are sequentially arranged along the fresh air flow direction; a part of the fresh air passes through the primary treatment fan 24 and the secondary rotor 27 in sequence to form a regeneration branch; the regeneration air passes through the secondary regeneration heater 212, the primary regeneration heater 211 and the regeneration fan 213 in sequence to form a regeneration main path; the flow direction of the regeneration air is opposite to that of the fresh air; the regeneration branch is connected to the regeneration main path through the secondary regeneration heater 212.

[0078] For the double-wheel dehumidifier 2 equipped with the surface cooler 1, since the surface cooler 1 has excellent heat exchange performance, after the high-temperature humid air passes through the surface cooler 1, the inlet and outlet water temperature difference of the refrigerant inside the surface cooler 1 can reach 2°C~9°C, so that the fresh air can remove a large amount of moisture in the pre-cooling and dehumidification stage, thereby reducing the energy consumption of the first-stage wheel 23, the second-stage wheel 27, the first-stage regeneration heater 211, the second-stage regeneration heater 212, the middle heat exchanger 25 and the rear heat exchanger 29, thereby achieving the purpose of energy saving and emission reduction.

[0079] Embodiment 5 of the present utility model is:

[0080] A wind cabinet comprises an air blower and a surface cooler 1; the air inlet end of the air blower is connected to the air outlet end of the surface cooler 1; the air blower and the surface cooler 1 cooperate to achieve the effect of cooling and air supply. Under certain working conditions with high humidity, the wind cabinet can also achieve a certain dehumidification effect, thereby improving the versatility of the wind cabinet.

[0081] The working principle of this utility model:

[0082] When high-temperature and high-humidity fresh air passes through the surface cooler 1, since low-temperature refrigerant continues to flow in the heat exchange coil 12, the fresh air can quickly cool down and condense the high-temperature water vapor inside under the joint action of the heat exchange coil 12 and the heat exchange fins 13, thereby achieving the purpose of dehumidification.

[0083] In summary, the utility model provides a surface cooler, which compresses the distance between the heat exchange coils by staggered superposition, thereby increasing the number of heat exchange coils without changing the size of the surface cooler, so as to improve the overall dehumidification and temperature control capabilities, and at the same time limit the spacing between the heat exchange fins, which can effectively increase the heat exchange area between the equipment and the fresh air, and then improve the treatment effect of the surface cooler on the fresh air with the cooperation of the heat exchange coils and the heat exchange fins.

[0084] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A surface cooler, characterized in that: It includes a frame and at least two groups of heat exchange coils arranged inside the frame; Part of the positions between the heat exchange coils are staggered and superimposed in the vertical direction; The periphery of the heat exchange coil is provided with heat exchange fins arranged side by side; The planes where the heat exchange fins are located are parallel to each other; The spacing between the heat exchange fins is 1.2 mm to 3.6 mm.

2. The surface cooler according to claim 1, characterized in that: It also includes a refrigeration system; The refrigeration system and the heat exchange coil constitute a refrigeration circuit; The refrigeration system comprises a pump body; The liquid outlet of the pump body is communicated with the liquid outlet of the heat exchange coil.

3. The surface cooler according to claim 1, characterized in that: The diameter of the heat exchange coil is 7 mm to 19.05 mm.

4. The surface cooler according to claim 1, characterized in that: The tube spacing of the heat exchange coil is 12 mm to 25 mm.

5. A double-rotor dehumidifier, characterized in that: The surface cooler comprises the surface cooler as claimed in any one of claims 1 to 4, and a fresh air valve, a coarse filter, a primary rotor, a primary treatment fan, a medium heat exchanger, a medium filter, a secondary rotor, a secondary treatment fan, a post heat exchanger and an air supply valve arranged in sequence along the fresh air flow direction; The surface cooler is located between the coarse filter and the primary rotor.

6. The double-rotor dehumidifier according to claim 5, characterized in that: Another part of the fresh air passes through the first-stage processing fan and the second-stage rotor in sequence to form a regeneration branch flow.

7. The double-wheel dehumidifier according to claim 6, characterized in that: It also includes a primary regenerative heater, a secondary regenerative heater and a regenerative fan; The regeneration air passes through the secondary regeneration heater, the primary regeneration heater and the regeneration fan in sequence to form a regeneration main path; The flow direction of the regeneration air is opposite to the flow direction of the fresh air; The regeneration branch flow is connected to the regeneration main path through a secondary regeneration heater.

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