Heat pump dehumidification device

Abstract

The utility model relates to a heat pump dehumidification device which comprises an evaporator and a condenser, a compressor is arranged between an outlet of the evaporator and an inlet of the condenser, and an expansion valve is arranged between an outlet of the condenser and an inlet of the evaporator. A water collecting core is arranged between the evaporator and the condenser, and a fan is arranged on the side, away from the evaporator, of the condenser. The water collecting core is arranged between the evaporator and the condenser and forms the micro-nano groove structure through femtosecond laser etching, so that air cooled and dehumidified by the evaporator can be treated by the water collecting core to become low-temperature dry gas, and water vapor in the air can be adsorbed by the water collecting plate and flows downwards along the groove; no additional energy consumption is generated, and the dehumidification efficiency of the heat pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a heat pump dehumidification device. Background Art

[0002] Driven by a small amount of high-quality energy, heat pumps can absorb heat from low-temperature heat sources and release heat to high-temperature heat sources. Currently, heat pumps are widely used in dehumidification. Through the refrigeration cycle, the moisture in the indoor air can be condensed into water and discharged, thereby achieving the purpose of reducing humidity. However, the operating efficiency of the heat pump is affected by many factors, such as ambient temperature and compressor performance. In order to improve the dehumidification efficiency of the heat pump, it is usually necessary to optimize the refrigeration cycle or adjust the operating frequency of the compressor. However, the method of improving the dehumidification efficiency by changing the performance of the compressor has limited effect. Although the introduction of complex structures can improve efficiency, it will increase the manufacturing cost and maintenance cost of the equipment, and will also make the structure of the equipment more complicated, which is not conducive to installation and use.

[0003] Therefore, further improvements to heat pump dehumidification are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a heat pump dehumidification device with high dehumidification efficiency in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: the heat pump dehumidification device includes an evaporator and a condenser, a compressor is arranged between the outlet of the evaporator and the inlet of the condenser, and an expansion valve is arranged between the outlet of the condenser and the inlet of the evaporator. It is characterized in that: the evaporator and the condenser are arranged in an air duct, a water collecting core is arranged between the evaporator and the condenser, and a fan is arranged on the side of the condenser away from the evaporator.

[0006] In order to support the internal water collecting plate, preferably, the water collecting core includes a first connecting plate and a second connecting plate, and the water collecting plate is arranged between the first connecting plate and the second connecting plate. The first connecting plate and the second connecting plate are respectively arranged at the upper part and the lower part of the water collecting plate, which can support the internal water collecting plate.

[0007] In order to improve the adsorption efficiency of water vapor, there are at least two water collecting plates, each of which is longitudinally arranged between the first connecting plate and the second connecting plate, and adjacent water collecting plates are arranged at intervals. There are at least two water collecting plates, and each of the water collecting plates is arranged in parallel along the longitudinal direction. Among them, multiple water collecting plates are arranged inside the water collecting core, and adjacent water collecting plates are equidistantly arranged inside the water collecting core, so that the low-temperature and low-humidity air treated by the evaporator can fully contact the water collecting plates, thereby improving the adsorption efficiency of water vapor in the air.

[0008] In order to reasonably use the internal space, the adjacent water collecting plates are arranged in parallel with each other. The parallel arrangement of the water collecting plates improves the utilization rate of the space and allows multiple water collecting plates to be arranged between the first connecting plate and the second connecting plate.

[0009] In order to improve the hydrophilic effect of the water collecting plate, it is preferred that the water collecting plate is a metal plate, and after laser etching, a micro-nano groove structure is formed on the surface of the water collecting plate. Among them, the metal plate has good hydrophilicity and can be used for dehumidification in the air. At the same time, when the metal plate is treated with laser etching technology to increase the surface roughness, the increase in roughness is conducive to the surface changing from a hydrophilic surface to a super hydrophilic surface. At this time, it is found through testing that the hydrophilic angle of the metal surface changes from the original 15° to 0°. The decrease in the hydrophilic angle improves the wettability of the metal surface, thereby making it more absorbent.

[0010] In order to facilitate the collection of liquid water, it is preferred that the grooves in the micro-nano groove structure are arranged along the length direction of the water collecting plate. The groove structure is conducive to the formation of a capillary effect, thereby making it easier to adsorb water vapor in the air; at the same time, the water vapor adsorbed by the water collecting plate will flow downward along the surface of the longitudinal groove under the action of gravity, and the liquid water can be collected at the bottom of the water collecting plate. At this time, the water collecting plate can continue to adsorb water vapor without the need for external force to regenerate.

[0011] In order to facilitate processing and ensure wettability of the plate, the width of the groove is 300-900 um, and the height difference between the convex surface and the concave surface of the groove is 400-800 um.

[0012] Furthermore, the width of the groove is 600um, and the height difference between the convex surface and the concave surface of the groove is 500um.

[0013] Compared with the prior art, the advantages of the utility model are: a water collecting core is arranged between the evaporator and the condenser of the heat pump dehumidification device, and the processed air passes through the evaporator, the water collecting core and the condenser in sequence. The surface of the water collecting core is formed with a micro-nano groove structure by laser etching, so that the air cooled and dehumidified by the evaporator can be processed into low-temperature dry gas through the water collecting core, and the water vapor in the air can be adsorbed by the water collecting plate and flow downward along the groove, which will not increase the energy consumption and can improve the dehumidification efficiency of the heat pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the water collection core in the embodiment of the utility model;

[0015] Figure 2 for Figure 1 A front view of

[0016] Figure 3This is a schematic diagram of the operation of the heat pump dehumidification device in the embodiment of the utility model;

[0017] In the figure: 1. water collecting core; 11. water collecting plate; 12. first connecting plate; 13. second connecting plate; 2. evaporator; 3. condenser; 4. expansion valve; 5. compressor; 6. fan; 7. air duct. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 3 The heat pump dehumidification device comprises an evaporator 2 and a condenser 3, a compressor 5 is arranged between the outlet of the evaporator 2 and the inlet of the condenser 3, an expansion valve 4 is arranged between the outlet of the condenser 3 and the inlet of the evaporator 2, the evaporator 2 and the condenser 3 are arranged in an air duct 7, a water collecting core 1 is arranged between the evaporator 2 and the condenser 3, a fan 6 is arranged on the side of the condenser 3 away from the evaporator 2, and the treated air passes through the evaporator 2, the water collecting core 1 and the condenser 3 in sequence under the action of the fan 6.

[0020] refer to Figure 1 and Figure 2 The water collecting core 1 includes a first connecting plate 12 and a second connecting plate 13, and a water collecting plate 11 is arranged between the first connecting plate 12 and the second connecting plate 13. The first connecting plate 12 and the second connecting plate 13 are respectively arranged at the upper part and the lower part of the water collecting plate 11, and can support the internal water collecting plate 11.

[0021] refer to Figure 1 and Figure 2 , there are at least two water collecting plates 11. In order to achieve a better dehumidification effect, the preferred number of water collecting plates 11 in this embodiment is 40. Each water collecting plate 11 is longitudinally arranged between the first connecting plate 12 and the second connecting plate 13, and adjacent water collecting plates 11 are arranged at intervals. Among them, multiple water collecting plates 11 are arranged inside the water collecting core 1, and adjacent water collecting plates 11 are equidistantly arranged inside the water collecting core 1, so that the low-temperature and high-humidity air treated by the evaporator 2 can fully contact the water collecting plates 11, thereby improving the adsorption efficiency of water vapor in the air. In order to reasonably use the internal space, adjacent water collecting plates 11 are arranged parallel to each other. The parallel arrangement of the water collecting plates 11 improves the utilization rate of the space, and multiple water collecting plates 11 can be arranged between the first connecting plate 12 and the second connecting plate 13.

[0022] The water collecting plate 11 is a metal plate. In this embodiment, the preferred metal plate is a metal aluminum sheet with low cost. The surface of the water collecting plate 11 is treated by laser etching to form a micro-nano groove structure. Among them, the metal plate has good hydrophilicity and can be used for dehumidification in the air. When the metal plate is treated by laser etching technology to increase the surface roughness, the increase in roughness is conducive to the surface changing from a hydrophilic surface to a super-hydrophilic surface. At this time, it is found through testing that the hydrophilic angle of the metal surface changes from the original 15° to 0°. The decrease in the hydrophilic angle improves the wettability of the metal surface, thereby making the water absorption stronger. In order to facilitate the collection of liquid water, the grooves in the micro-nano groove structure are arranged along the length direction of the water collecting plate 11. The groove structure is conducive to the formation of a capillary effect, so that it is easier to adsorb water vapor in the air; at the same time, the water vapor adsorbed by the water collecting plate 11 will flow downward along the surface of the groove opened in the longitudinal direction under the action of gravity, and the liquid water can be collected at the bottom of the water collecting plate 11. At this time, the water collecting plate 11 can continue to adsorb water vapor without the need for external force to regenerate. The width of the groove is 300-900um, and the height difference between the convex and concave surfaces of the groove is 400-800um. Taking into account the processing and plate wettability factors, the preferred groove width in this embodiment is 600um, and the height difference between the convex and concave surfaces of the groove is 500um.

[0023] The working steps of the heat pump dehumidification device in this embodiment are: the high-temperature and high-humidity air first passes through the evaporator 2 driven by the fan 6, and is cooled and dehumidified by the evaporator 2. The air is processed into low-temperature and low-humidity air. The treated air passes through each water collecting plate 11 of the water collecting core 1 in turn, and the water vapor in the air is adsorbed by the water collecting plate 11. At this time, the air discharged from the water collecting core 1 is processed into low-temperature dry air. The treated air is heated by the condenser 3 and processed into warm and dry air, thereby meeting the use requirements.

Claims

1. A heat pump dehumidification device, comprising an evaporator (2) and a condenser (3), a compressor (5) being arranged between the outlet of the evaporator (2) and the inlet of the condenser (3), and an expansion valve (4) being arranged between the outlet of the condenser (3) and the inlet of the evaporator (2), characterized in that: The evaporator (2) and the condenser (3) are arranged in an air duct (7), a water collecting core (1) is arranged between the evaporator (2) and the condenser (3), and a fan (6) is arranged on a side of the condenser (3) away from the evaporator (2).

2. The heat pump dehumidification device according to claim 1, characterized in that: The water collection core (1) comprises a first connecting plate (12) and a second connecting plate (13), and a water collection plate (11) is arranged between the first connecting plate (12) and the second connecting plate (13).

3. The heat pump dehumidification device according to claim 2, characterized in that: There are at least two water collecting plates (11), each of which is longitudinally arranged between the first connecting plate (12) and the second connecting plate (13), and adjacent water collecting plates (11) are arranged at intervals.

4. The heat pump dehumidification device according to claim 3, characterized in that: Adjacent water collecting plates (11) are arranged parallel to each other.

5. The heat pump dehumidification device according to claim 4, characterized in that: The water collection plate (11) is a metal plate and is subjected to laser etching, so that a micro-nano groove structure is formed on the surface of the water collection plate (11).

6. The heat pump dehumidification device according to claim 5, characterized in that: The grooves in the micro-nano groove structure are arranged along the length direction of the water collecting plate (11).

7. The heat pump dehumidification device according to claim 6, characterized in that: The width of the groove is 300-900 um, and the height difference between the convex surface and the concave surface of the groove is 400-800 um.

8. The heat pump dehumidification device according to claim 7, characterized in that: The width of the groove is 600um, and the height difference between the convex surface and the concave surface of the groove is 500um.

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