Air source heat pump evaporator fin with defrosting mechanism

Abstract

The invention relates to an air source heat pump evaporator fin with a defrosting mechanism, and belongs to the technical field of air source heat pump evaporator fins, the air source heat pump evaporator fin with the defrosting mechanism comprises a box seat main body, and an etching layer and a modification layer are arranged, so that when the evaporator fin is used in daily life, the defrosting mechanism can defrost the evaporator fin. In order to further improve the automatic defrosting effect of the evaporator fin in daily use, aluminum alloy serves as a base material, a rough structure is prepared through a chemical etching method, a PDMS / H-S < iO2 > solution serves as a modifying agent and is sprayed to the surface of the base material, and a stable fluorine-free environment-friendly super-hydrophobic aluminum alloy surface is prepared. The prepared super-hydrophobic aluminum alloy surface has excellent anti-icing, self-cleaning and mechanical properties, and can improve the unit efficiency when being used on the surface of an evaporator; and a novel silicon-based material is used for replacing a traditional fluorine-based material, so that the influence on the environment in the preparation process is greatly reduced, and energy conservation and emission reduction are realized.

Description

Technical Field

[0001] The invention relates to the technical field of air source heat pump evaporator fins, and in particular to an air source heat pump evaporator fin with a defrosting mechanism. Background Art

[0002] With the policy support of vigorously promoting clean energy heating such as "coal to electricity, coal to gas" to improve environmental problems in my country, air source heat pumps have become the main form of heating for users in my country's hot summer and cold winter areas due to their green, pollution-free and energy-saving characteristics. However, when the ambient temperature is between -12.8℃ and 5.8℃ and the relative humidity is greater than 67%, frost will form on the surface of the outdoor evaporator fins, affecting the performance of the unit.

[0003] After searching, according to the prior art CN 117553457 B, a self-cleaning high-efficiency heat exchange air source heat pump is disclosed, which relates to the technical field of air source heat pumps; specifically, it comprises a box seat, a fixed frame is installed on the top of the box seat, and a top cover is installed on the top of the fixed frame, a fan is installed on the top of the top cover, fin evaporators are installed on both sides of the fixed frame, and a plurality of arranged heat exchange fins are installed on the outer side of the fin evaporator, guide slide bars are installed on both sides of the interior of the fixed frame, and a movable seat is slidably installed on the outer side of the guide slide bar, and a ball nut is installed on the side of the movable seat. When frosting occurs on the fin evaporator in this invention, a three-way valve is used to connect the water inlet of the atomizing mechanism with the warm water in the water tank, and the frost layer on the surface of the heat exchange fin can be quickly removed by the impact of hot water mist, and the air source heat pump can be quickly defrosted without stopping the heat exchange, thereby further improving the heat exchange efficiency of the air source heat pump.

[0004] However, although the existing air source heat pump evaporator fins can perform a good defrosting operation on the evaporator fins when in use, there are still the following problems:

[0005] First, it is easy to cause the indoor temperature of the user to drop sharply and the noise is loud during the defrosting process, which seriously affects the comfort of the human body;

[0006] Second, the circulation flow of the compressor refrigerant is reduced during defrosting, which prolongs the defrosting time and causes incomplete defrosting.

[0007] Third, phase change heat storage materials are expensive and have complex manufacturing processes, which are not suitable for large-scale production and do not meet people's usage needs. For this reason, we propose an air source heat pump evaporator fin with a defrost mechanism. Summary of the invention

[0008] In order to solve the problems mentioned in the above background, the present invention provides an air source heat pump evaporator fin with a defrost mechanism to solve the problems mentioned in the above background technology that it is easy to cause a sharp drop in indoor temperature at the user end and loud noise during the defrosting process, which seriously affects human comfort, the circulation flow rate of the compressor refrigerant is reduced during defrosting, which prolongs the defrosting time and causes incomplete defrosting, and the phase change heat storage material is expensive, the manufacturing process is complicated, and it is not suitable for large-scale production.

[0009] To achieve the above technical objectives, the technical solution adopted by the present invention is as follows: an air source heat pump evaporator fin with a defrosting mechanism, comprising a box seat body, the box seat body comprising a fixed frame, a fan body, a fin evaporator, a universal roller, an etching layer, a modification layer, a substrate body and a protective mechanism arranged on one side of the fin evaporator, the top of the box seat body is fixedly connected with a fixed frame, the top of the fixed frame is provided with a fan body, the side wall of the fixed frame is provided with a fin evaporator, and the bottom of the box seat body is movably connected with a universal roller;

[0010] The protection mechanism includes a snap-fit ​​assembly and a flip assembly;

[0011] The clamping assembly includes a mounting plate, a nut, a bolt and a clamping slot. The top of the fixed frame is clamped and connected with the mounting plate. The top of the mounting plate is provided with a nut. The inner wall of the nut is threadedly connected with a bolt that is slidably connected to the top of the fixed frame. The connection portion between the top of the fixed frame and the bolt is provided with a clamping slot.

[0012] The flip assembly includes a connecting box, a first servo motor, a worm, a worm wheel, a connecting shaft and a protective plate. The outer wall of the mounting plate is fixedly connected to the connecting box, the outer wall of the connecting box is fixedly connected to the first servo motor, the output end of the first servo motor is fixedly connected to the worm that is rotatably connected to the inner wall of the connecting box, the outer wall of the worm is meshed with a worm wheel that is rotatably connected to the inner wall of the connecting box, the rotation center of the worm wheel is fixedly connected to the connecting shaft that is rotatably connected to the outer wall of the mounting plate, and the outer wall of the connecting shaft is fixedly connected to the protective plate located on one side of the fin evaporator.

[0013] Preferably, an adjustment mechanism is provided on a side of the outer wall of the protective plate close to the fin evaporator, a positioning mechanism is provided on the bottom of the box seat body, and a fixing plate is fixedly connected to the outer wall of the protective plate.

[0014] Preferably, the overall material of the substrate body is aluminum alloy, the etching layer is prepared by chemical etching to prepare a rough structure, the modification layer uses PDMS / H-SiO solution as a modifier, which is sprayed on the surface of the substrate, and the SiO sol is prepared by a sol-gel method, and the SiO sol is functionalized with PDMS to obtain a SiO-PDMS modifier for spraying.

[0015] Preferably, the mounting plates are provided in two groups, and the positions of the two groups of mounting plates are distributed symmetrically with respect to the central axis of the fixed frame. The outer wall profile of the mounting plates is U-shaped, and the mounting plates form a clamping structure with the fixed frame through bolts and slots. The bolts and slots are provided in two groups, and the positions of the two groups of bolts and slots are distributed symmetrically with respect to the central axis of the mounting plates.

[0016] Preferably, the connecting shaft forms a flip structure with the mounting plate through the worm and the worm wheel, the rotation center of the worm wheel and the rotation center of the connecting shaft are arranged to overlap with each other, and the protective plate forms a protective structure with the fin evaporator through the worm wheel and the connecting shaft, and the protective plate and the fin evaporator are arranged in a one-to-one correspondence.

[0017] Preferably, the adjusting mechanism comprises a second servo motor, a first threaded rod, a sliding rod, a fixed groove, a third servo motor, a second threaded rod, an adjusting block, an adjusting groove and a hot air blower, the outer wall of the protective plate is fixedly connected to the second servo motor, the output end of the second servo motor is fixedly connected to the first threaded rod rotatably connected to the outer wall of the protective plate, the outer wall of the first threaded rod is threadedly connected to the sliding rod slidably connected to the outer wall of the protective plate, a fixing groove is provided at the connecting portion between the outer wall of the protective plate and the sliding rod, the outer wall of the sliding rod is fixedly connected to the third servo motor, the output end of the third servo motor is fixedly connected to the second threaded rod rotatably connected to the outer wall of the sliding rod, the outer wall of the second threaded rod is threadedly connected to the adjusting block slidably connected to the outer wall of the sliding rod, the connecting portion between the outer wall of the sliding rod and the adjusting block is provided with an adjusting groove, and the outer wall of the adjusting block is detachably connected to the hot air blower.

[0018] Preferably, the sliding rod forms a lifting structure through the first threaded rod and the fixed groove, the adjusting block forms a sliding structure through the second threaded rod and the adjusting groove, and the movement track of the hot air blower is cross-shaped.

[0019] Preferably, the positioning mechanism includes a third threaded rod, a knob, a threaded slide rod, a slide groove, a locking block and a positioning groove, the bottom of the box seat body is rotatably connected to the third threaded rod, one end of the third threaded rod is fixedly connected to the knob, the outer wall of the third threaded rod is threadedly connected to the threaded slide rod slidably connected to the bottom of the box seat body, a slide groove is provided at the connecting position between the bottom of the box seat body and the threaded slide rod, the outer wall of the threaded slide rod is fixedly connected to a locking block lockingly connected to the outer wall of the universal roller, and a positioning groove is provided at the connecting position between the outer wall of the locking block and the universal roller.

[0020] Preferably, the third threaded rod is provided with two groups, the rotation directions of the two groups of the third threaded rod are opposite, the threaded sliding rod forms a sliding structure through the third threaded rod and the sliding groove, and the universal roller forms a clamping structure with the box seat body through the clamping block and the positioning groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The air source heat pump evaporator fin with a defrost mechanism is provided with an etching layer and a modification layer. When the evaporator fin is used daily, in order to further improve the automatic defrosting effect of the evaporator fin in daily use, an aluminum alloy is used as a substrate, a rough structure is prepared by a chemical etching method, and a PDMS / HSiO2 solution is used as a modifier and sprayed on the surface of the substrate to prepare a stable fluorine-free and environmentally friendly super-hydrophobic aluminum alloy surface, so that the prepared super-hydrophobic aluminum alloy surface has excellent anti-icing, self-cleaning and mechanical properties, and can be used for the evaporator surface to improve the unit efficiency; and a new silicon-based material is used to replace the traditional fluorine-based material, which greatly reduces the impact on the environment during the preparation process and achieves energy saving and emission reduction.

[0023] 2. The air source heat pump evaporator fin with a defrost mechanism is provided with a protective plate. When the air source heat pump evaporator fin is in daily use, in order to improve the shielding and protection effect of the air source heat pump evaporator fin when not in use, to prevent the fin from being damaged by splashing gravel, and during daily maintenance of the air source heat pump, the protective plate is flipped to achieve a multifunctional effect of conveniently placing maintenance tools. After the mounting plate is installed, the first servo motor can be turned on to drive the worm wheel to rotate through the rotation of the worm, and the rotation of the worm wheel drives the protective plate to flip through the connection of the connecting shaft, thereby achieving a shielding and protection effect on the fin when not in use.

[0024] 3. The fins of the air source heat pump evaporator with a defrost mechanism are provided with an adjusting block. When the unused fins are shielded and protected by a protective plate, in order to further prevent the fins from icing and freezing, after the protective plate is flipped, the second servo motor can be turned on to drive the hot air blower to perform reciprocating lifting and lowering motions through the sliding of the sliding rod, and the third servo motor can be turned on to drive the hot air blower to perform reciprocating sliding motions through the sliding of the adjusting block, thereby achieving the effect of driving the hot air blower to move in a cross shape, thereby further reducing the possibility of icing and freezing of the fins when not in use.

[0025] 4. The evaporator fin of an air source heat pump with a defrost mechanism is provided with a locking block. When the air source heat pump is moved by the universal roller, in order to improve the stability of the air source heat pump after the position is moved, the knob can be turned to drive the threaded slide rod to slide along the inner wall of the slide groove through the rotation of the third threaded rod. The sliding of the threaded slide rod drives the locking block to contact the universal roller, and the positioning groove is embedded in the surface of the universal roller, thereby reducing the shaking of the universal roller, thereby achieving the effect of improving the stability of the air source heat pump after the position is moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the protective plate of the present invention in an open state; Figure 4 It is a schematic diagram of the card slot position distribution structure of the present invention; Figure 5 It is a schematic diagram of the explosion structure of the protective plate and the fixed frame connected to the present invention; Figure 6 It is a schematic diagram of the position distribution structure of nuts and bolts of the present invention; Figure 7 It is a schematic diagram of the position distribution structure of the adjustment block of the present invention; Figure 8 It is a schematic diagram of the position distribution structure of the fin evaporator of the present invention; Fig. 9 It is a schematic diagram of the position distribution structure of the engaging blocks of the present invention; Fig.10 For the present invention Figure 6 A is an enlarged schematic diagram of the structure; Fig.11 For the present invention Figure 8 A schematic diagram of the enlarged structure at B; Fig.12 It is a schematic structural diagram of the preparation technology flow chart of the present invention.

[0038] The reference numerals in the accompanying drawings are:

[0039] 1. Box seat body; 2. Fixed frame; 3. Fan body; 4. Fin evaporator; 5. Universal roller; 6. Etching layer; 7. Modification layer; 8. Substrate body; 9. Mounting plate; 10. Nut; 11. Bolt; 12. Slot; 13. Connection box; 14. First servo motor; 15. Worm; 16. Worm wheel; 17. Connection shaft; 18. Protective plate; 19. Adjustment mechanism; 1901. Second servo motor; 190 2. first threaded rod; 1903. sliding rod; 1904. fixing groove; 1905. third servo motor; 1906. second threaded rod; 1907. adjusting block; 1908. adjusting groove; 1909. hot air blower; 20. fixing plate; 21. positioning mechanism; 2101. third threaded rod; 2102. knob; 2103. threaded sliding rod; 2104. sliding groove; 2105. engaging block; 2106. positioning groove. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] For examples, see Figures 1 to 12 The present embodiment provides an air source heat pump evaporator fin with a defrosting mechanism, comprising a box seat body 1, the box seat body 1 comprising a fixed frame 2, a fan body 3, a fin evaporator 4, a universal roller 5, an etching layer 6, a modification layer 7, a substrate body 8 and a protective mechanism arranged on one side of the fin evaporator 4, the top of the box seat body 1 is fixedly connected with the fixed frame 2, the top of the fixed frame 2 is provided with the fan body 3, the side wall of the fixed frame 2 is provided with the fin evaporator 4, and the bottom of the box seat body 1 is movably connected with the universal roller 5;

[0042] The protection mechanism includes a snap-on assembly and a flip assembly;

[0043] The clamping assembly includes a mounting plate 9, a nut 10, a bolt 11 and a clamping slot 12. The top of the fixed frame 2 is clamped with the mounting plate 9, the top of the mounting plate 9 is provided with a nut 10, the inner wall of the nut 10 is threadedly connected with a bolt 11 that is slidably connected to the top of the fixed frame 2, and a clamping slot 12 is provided at the connection portion between the top of the fixed frame 2 and the bolt 11;

[0044] The flip assembly includes a connecting box 13, a first servo motor 14, a worm 15, a worm wheel 16, a connecting shaft 17 and a protective plate 18. The outer wall of the mounting plate 9 is fixedly connected to the connecting box 13, the outer wall of the connecting box 13 is fixedly connected to the first servo motor 14, the output end of the first servo motor 14 is fixedly connected to the worm 15 rotatably connected to the inner wall of the connecting box 13, the outer wall of the worm 15 is meshed with the worm wheel 16 rotatably connected to the inner wall of the connecting box 13, the rotation center of the worm wheel 16 is fixedly connected to the connecting shaft 17 rotatably connected to the outer wall of the mounting plate 9, and the outer wall of the connecting shaft 17 is fixedly connected to the protective plate 18 located on one side of the fin evaporator 4.

[0045] Furthermore, an adjusting mechanism 19 is provided on the side of the outer wall of the protective plate 18 close to the fin evaporator 4, a positioning mechanism 21 is provided at the bottom of the box seat body 1, and the outer wall of the protective plate 18 is fixedly connected with a fixing plate 20, which is beneficial to further reduce the ice and freezing of the fins when not in use through the setting of the adjusting mechanism 19, and is beneficial to achieve the effect of improving the stability of use of the air source heat pump after the position is moved through the setting of the positioning mechanism 21.

[0046] Furthermore, the overall material of the substrate body 8 is aluminum alloy, the etching layer 6 is prepared with a rough structure by chemical etching, the modification layer 7 uses PDMS / H-SiO2 solution as a modifier, which is sprayed on the surface of the substrate, and the SiO2 sol is prepared by a sol-gel method, and the SiO2 sol is functionalized with PDMS to obtain a SiO2-PDMS modifier for spraying, which is beneficial to improve the unit efficiency by setting the etching layer 6 and the modification layer 7 with the substrate body 8, and using it on the evaporator surface; and the new silicon-based material replaces the traditional fluorine-based material, which greatly reduces the impact on the environment during the preparation process and achieves energy saving and emission reduction.

[0047] Furthermore, two groups of mounting plates 9 are provided, and the position distribution of the two groups of mounting plates 9 is symmetrical about the central axis of the fixed frame 2. The outer wall profile of the mounting plate 9 is U-shaped. The mounting plate 9 forms a clamping structure with the fixed frame 2 through bolts 11 and slots 12. Two groups of bolts 11 and slots 12 are provided, and the position distribution of the two groups of bolts 11 and slots 12 is symmetrical about the central axis of the mounting plate 9, which is beneficial to the connection between the bolts 11 and the slots 12, and drives the mounting plate 9 to be clamped and installed with the fixed frame 2, thereby playing a role in pre-use of the protective plate 18.

[0048] Furthermore, the connecting shaft 17 forms a flip structure with the mounting plate 9 through the worm 15 and the worm wheel 16, and the rotation center of the worm wheel 16 and the rotation center of the connecting shaft 17 are arranged to overlap with each other. The protective plate 18 forms a protective structure with the fin evaporator 4 through the worm wheel 16 and the connecting shaft 17. The protective plate 18 and the fin evaporator 4 are arranged in a one-to-one correspondence, which is conducive to the rotation of the worm 15. Through the connection of the worm wheel 16, the connecting shaft 17 is driven to rotate along the outer wall of the mounting plate 9, which plays a role in driving the protective plate 18 to conveniently flip, thereby playing a role in shielding and protecting the fins when not in use.

[0049] Furthermore, the adjusting mechanism 19 includes a second servo motor 1901, a first threaded rod 1902, a sliding rod 1903, a fixed groove 1904, a third servo motor 1905, a second threaded rod 1906, an adjusting block 1907, an adjusting groove 1908 and a hot air blower 1909. The outer wall of the protective plate 18 is fixedly connected to the second servo motor 1901, and the output end of the second servo motor 1901 is fixedly connected to the first threaded rod 1902 rotatably connected to the outer wall of the protective plate 18, the outer wall of the first threaded rod 1902 is threadedly connected to the sliding rod 1903 slidably connected to the outer wall of the protective plate 18, and a fixing groove 1904 is provided at the connecting portion between the outer wall of the protective plate 18 and the sliding rod 1903, the outer wall of the sliding rod 1903 is fixedly connected to the third servo motor 1905, and the output end of the third servo motor 1905 is fixedly connected to the second threaded rod 1906 rotatably connected to the outer wall of the sliding rod 1903, The outer wall of the threaded rod 1906 is threadedly connected with an adjustment block 1907 which is slidably connected to the outer wall of the sliding rod 1903. An adjustment groove 1908 is provided at the connection portion between the outer wall of the sliding rod 1903 and the adjustment block 1907. The outer wall of the adjustment block 1907 is detachably connected with a hot air blower 1909. By setting the adjustment block 1907, it is beneficial to shield and protect the unused fins by the protective plate 18. In order to further prevent the fins from icing and freezing, after the protective plate 18 is flipped over, the second servo motor 1901 can be turned on to drive the hot air blower 1909 to perform reciprocating lifting and lowering motion through the sliding of the sliding rod 1903, and the third servo motor 1905 can be turned on to drive the hot air blower 1909 to slide back and forth through the sliding of the adjustment block 1907, thereby achieving the effect of driving the hot air blower 1909 to move in a cross shape, thereby further reducing the possibility of icing and freezing of the fins when not in use.

[0050] Furthermore, the sliding rod 1903 forms a lifting structure between the first threaded rod 1902 and the fixed groove 1904, and the adjusting block 1907 forms a sliding structure between the second threaded rod 1906 and the adjusting groove 1908. The movement trajectory of the hot air blower 1909 is cross-shaped, which is conducive to the rotation of the first threaded rod 1902, driving the sliding rod 1903 to slide along the inner wall of the fixed groove 1904, thereby driving the hot air blower 1909 to make a cross-shaped adjustment movement.

[0051] Furthermore, the positioning mechanism 21 includes a third threaded rod 2101, a knob 2102, a threaded slide rod 2103, a slide groove 2104, a snap-fit ​​block 2105 and a positioning groove 2106. The bottom of the box seat body 1 is rotatably connected to the third threaded rod 2101, one end of the third threaded rod 2101 is fixedly connected to the knob 2102, the outer wall of the third threaded rod 2101 is threadedly connected to the threaded slide rod 2103 slidably connected to the bottom of the box seat body 1, a slide groove 2104 is provided at the connection portion between the bottom of the box seat body 1 and the threaded slide rod 2103, the outer wall of the threaded slide rod 2103 is fixedly connected to the snap-fit ​​block 2105 snap-fitted to the outer wall of the universal roller 5, and the snap-fit ​​block 21 A positioning groove 2106 is provided at the connection portion between the outer wall of 05 and the universal roller 5. By setting the locking block 2105, when the air source heat pump is moved by the universal roller 5, in order to improve the stability of the air source heat pump after the position is moved, the knob 2102 can be rotated to drive the threaded slide bar 2103 to slide along the inner wall of the slide groove 2104 through the rotation of the third threaded rod 2101. The sliding of the threaded slide bar 2103 drives the locking block 2105 to contact the universal roller 5, and makes the positioning groove 2106 embedded in the surface of the universal roller 5, thereby reducing the shaking of the universal roller 5 and achieving the effect of improving the stability of the air source heat pump after the position is moved.

[0052] Furthermore, two groups of third threaded rods 2101 are provided, and the rotation directions of the two groups of third threaded rods 2101 are opposite. The threaded slide rod 2103 forms a sliding structure through the third threaded rod 2101 and the slide groove 2104, and the universal roller 5 forms a locking structure with the box seat body 1 through the locking block 2105 and the positioning groove 2106, which is beneficial to the rotation of the third threaded rod 2101, driving the threaded slide rod 2103 to slide along the inner wall of the slide groove 2104, so that the positioning groove 2106 is embedded in the surface of the universal roller 5, reducing the shaking of the universal roller 5, thereby achieving the effect of improving the stability of use of the air source heat pump after the position is moved.

[0053] like Figure 1As shown, the air source heat pump evaporator fin with a defrosting mechanism, when in use, first, when the evaporator fin is used daily, in order to further improve the automatic defrosting effect of the evaporator fin in daily use, aluminum alloy is used as a substrate, a rough structure is prepared by chemical etching, and PDMS / HS iO2 solution is used as a modifier and sprayed on the surface of the substrate to prepare a stable fluorine-free and environmentally friendly super-hydrophobic aluminum alloy surface, so that the prepared super-hydrophobic aluminum alloy surface has excellent anti-icing, self-cleaning and mechanical properties, and can be used for the evaporator surface to improve the unit efficiency; and the new silicon-based material replaces the traditional fluorine-based material, which greatly reduces the impact on the environment during the preparation process, and achieves energy saving and emission reduction;

[0054] Next, when the air source heat pump evaporator fins are used daily, in order to improve the shielding and protection effect of the air source heat pump evaporator fins when not in use, to prevent the fins from being damaged by splashing gravel, and when the air source heat pump is inspected and repaired daily, the protective plate 18 is turned on to achieve a multifunctional effect of conveniently placing inspection tools. After the mounting plate 9 is installed, the first servo motor 14 can be turned on to drive the worm gear 16 to rotate through the rotation of the worm 15. The rotation of the worm gear 16 drives the protective plate 18 to flip through the connection of the connecting shaft 17, thereby achieving a shielding and protection effect on the fins when not in use.

[0055] Next, when the unused fins are shielded and protected by the protective plate 18, in order to further prevent the fins from icing and freezing, after flipping the protective plate 18, the second servo motor 1901 can be turned on to drive the hot air blower 1909 to perform reciprocating lifting and lowering motions through the sliding rod 1903, and the third servo motor 1905 can be turned on to drive the hot air blower 1909 to slide back and forth through the sliding of the adjustment block 1907, thereby achieving the effect of driving the hot air blower 1909 to move in a cross shape, thereby further reducing the possibility of icing and freezing of the fins when not in use.

[0056] Finally, when the air source heat pump is moved by the universal roller 5, in order to improve the stability of the air source heat pump after the position is moved, the knob 2102 can be turned to drive the threaded slide rod 2103 to slide along the inner wall of the slide groove 2104 through the rotation of the third threaded rod 2101. The sliding of the threaded slide rod 2103 drives the locking block 2105 to contact the universal roller 5, and makes the positioning groove 2106 embedded in the surface of the universal roller 5, thereby reducing the shaking of the universal roller 5, thereby achieving the effect of improving the stability of the air source heat pump after the position is moved.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An air source heat pump evaporator fin with a defrosting mechanism, comprising a box seat body (1), characterized in that: The box seat body (1) comprises a fixed frame (2), a fan body (3), a fin evaporator (4), a universal roller (5), an etching layer (6), a modification layer (7), a substrate body (8) and a protective mechanism arranged on one side of the fin evaporator (4); the top of the box seat body (1) is fixedly connected to the fixed frame (2); the fan body (3) is arranged on the top of the fixed frame (2); the fin evaporator (4) is arranged on the side wall of the fixed frame (2); and the bottom of the box seat body (1) is movably connected to the universal roller (5); The protection mechanism includes a snap-fit ​​assembly and a flip assembly; The clamping assembly comprises a mounting plate (9), a nut (10), a bolt (11) and a clamping groove (12); the top of the fixed frame (2) is clamped and connected with the mounting plate (9); the top of the mounting plate (9) is provided with a nut (10); the inner wall of the nut (10) is threadedly connected with a bolt (11) which is slidably connected to the top of the fixed frame (2); and the connection portion between the top of the fixed frame (2) and the bolt (11) is provided with a clamping groove (12); The flip assembly comprises a connection box (13), a first servo motor (14), a worm (15), a worm wheel (16), a connection shaft (17) and a protective plate (18); the outer wall of the mounting plate (9) is fixedly connected to the connection box (13); the outer wall of the connection box (13) is fixedly connected to the first servo motor (14); the output end of the first servo motor (14) is fixedly connected to the worm (15) rotatably connected to the inner wall of the connection box (13); the outer wall of the worm (15) is meshed with the worm wheel (16) rotatably connected to the inner wall of the connection box (13); the rotation center of the worm wheel (16) is fixedly connected to the connection shaft (17) rotatably connected to the outer wall of the mounting plate (9); and the outer wall of the connection shaft (17) is fixedly connected to the protective plate (18) located on one side of the fin evaporator (4).

2. The air source heat pump evaporator fin with a defrosting mechanism according to claim 1, characterized in that: An adjustment mechanism (19) is provided on the side of the outer wall of the protective plate (18) close to the fin evaporator (4), a positioning mechanism (21) is provided at the bottom of the box seat body (1), and a fixing plate (20) is fixedly connected to the outer wall of the protective plate (18).

3. The air source heat pump evaporator fin with a defrosting mechanism according to claim 1, characterized in that: The overall material of the substrate body (8) is aluminum alloy, the etching layer (6) is prepared with a rough structure by chemical etching, the modification layer (7) uses PDMS / H-SiO2 solution as a modifier, which is sprayed on the surface of the substrate, and SiO2 sol is prepared by a sol-gel method, and the SiO2 sol is functionalized with PDMS to obtain a SiO2-PDMS modifier for spraying.

4. The air source heat pump evaporator fin with a defrosting mechanism according to claim 1, characterized in that: The mounting plates (9) are provided in two groups, and the positions of the two groups of mounting plates (9) are distributed symmetrically with respect to the central axis of the fixed frame (2). The outer wall profile of the mounting plates (9) is in a U shape. The mounting plates (9) form a clamping structure with the fixed frame (2) through bolts (11) and clamping grooves (12). The bolts (11) and clamping grooves (12) are provided in two groups, and the positions of the two groups of bolts (11) and clamping grooves (12) are distributed symmetrically with respect to the central axis of the mounting plates (9).

5. The air source heat pump evaporator fin with a defrosting mechanism according to claim 1, characterized in that: The connecting shaft (17) forms a flip structure with the mounting plate (9) through the worm (15) and the worm wheel (16); the rotation center of the worm wheel (16) and the rotation center of the connecting shaft (17) are arranged to overlap with each other; the protective plate (18) forms a protective structure with the fin evaporator (4) through the worm wheel (16) and the connecting shaft (17); the protective plate (18) and the fin evaporator (4) are arranged in a one-to-one correspondence.

6. The air source heat pump evaporator fin with a defrosting mechanism according to claim 2, characterized in that: The adjusting mechanism (19) comprises a second servo motor (1901), a first threaded rod (1902), a sliding rod (1903), a fixing groove (1904), a third servo motor (1905), a second threaded rod (1906), an adjusting block (1907), an adjusting groove (1908) and a hot air blower (1909); the outer wall of the protective plate (18) is fixedly connected to the second servo motor (1901); the output end of the second servo motor (1901) is fixedly connected to the first threaded rod (1902) rotatably connected to the outer wall of the protective plate (18); the outer wall of the first threaded rod (1902) is threadedly connected to the sliding rod (1903) slidably connected to the outer wall of the protective plate (18); A fixing groove (1904) is provided at the connection position between the outer wall of the guard plate (18) and the sliding rod (1903); the outer wall of the sliding rod (1903) is fixedly connected to a third servo motor (1905); the output end of the third servo motor (1905) is fixedly connected to a second threaded rod (1906) rotatably connected to the outer wall of the sliding rod (1903); the outer wall of the second threaded rod (1906) is threadedly connected to an adjustment block (1907) slidably connected to the outer wall of the sliding rod (1903); an adjustment groove (1908) is provided at the connection position between the outer wall of the sliding rod (1903) and the adjustment block (1907); the outer wall of the adjustment block (1907) is detachably connected to a hot air blower (1909).

7. The air source heat pump evaporator fin with a defrosting mechanism according to claim 6, characterized in that: The sliding rod (1903) forms a lifting structure between the first threaded rod (1902) and the fixed groove (1904), the adjusting block (1907) forms a sliding structure between the second threaded rod (1906) and the adjusting groove (1908), and the movement trajectory of the hot air blower (1909) is cross-shaped.

8. The air source heat pump evaporator fin with a defrosting mechanism according to claim 2, characterized in that: The positioning mechanism (21) comprises a third threaded rod (2101), a knob (2102), a threaded slide rod (2103), a slide groove (2104), a locking block (2105) and a positioning groove (2106); the bottom of the box seat body (1) is rotatably connected with the third threaded rod (2101); one end of the third threaded rod (2101) is fixedly connected with the knob (2102); the outer wall of the third threaded rod (2101) is threadedly connected with the threaded slide rod (2103) which is slidably connected with the bottom of the box seat body (1); a slide groove (2104) is provided at the connection position between the bottom of the box seat body (1) and the threaded slide rod (2103); the outer wall of the threaded slide rod (2103) is fixedly connected with the locking block (2105) which is locked and connected with the outer wall of the universal roller (5); and the outer wall of the locking block (2105) is provided with a positioning groove (2106) at the connection position between the outer wall of the locking block (2105) and the universal roller (5).

9. The air source heat pump evaporator fin with a defrosting mechanism according to claim 8, characterized in that: The third threaded rod (2101) is provided with two groups, and the rotation directions of the two groups of the third threaded rod (2101) are opposite. The threaded sliding rod (2103) forms a sliding structure through the third threaded rod (2101) and the sliding groove (2104), and the universal roller (5) forms a snap-fit ​​structure with the box seat body (1) through the snap-fit ​​block (2105) and the positioning groove (2106).

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