Defrosting device for a detachable solar pvt assisted air source heat pump

Abstract

The utility model discloses detachable defrosting device of solar PVT auxiliary air source heat pump belongs to air source heat pump technical field, including air source heat pump body, the front side of air source heat pump body is installed with air filter core, and the top of air source heat pump body is installed with PVT board, and the bottom of PVT board is installed with heat exchange box, and a plurality of radiating fins are installed in heat exchange box, and a plurality of radiating fins are fixedly connected with PVT board, and the adaptive gas exchange mechanism is including the gas exchange box, and the gas exchange box fixed mounting is in the front side of air source heat pump body. Through PVT board in power generation simultaneously collection heat energy, through radiating fin heating the air that flows through heat exchange box, the adaptive gas exchange mechanism can be in low temperature frost condition, automatically direct cold air to PVT board heating, again import hot air into heat pump body for evaporator defrosting, has improved defrosting efficiency significantly, can replace the electric energy for defrosting with free solar heat energy originally, has reduced defrosting energy consumption, has improved system overall energy efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of air source heat pump technology, specifically, it relates to a defrosting device for a detachable solar PVT-assisted air source heat pump. Background Technology

[0002] Air source heat pumps, as a highly efficient and environmentally friendly heating device, are increasingly widely used. However, in low-temperature and high-humidity winter environments, the evaporator surface of their outdoor units is prone to frost formation. The formation of frost significantly increases airflow resistance, deteriorates heat exchange efficiency, leads to a sharp decline in heating capacity, increases energy consumption, and may even trigger unit shutdown protection, seriously affecting system stability and user experience.

[0003] To solve the frosting problem, traditional air source heat pumps usually use reverse circulation defrosting or resistance wire heating defrosting. Reverse circulation defrosting requires switching the system from heating mode to cooling mode to transfer indoor heat to the outdoor unit for defrosting. This process not only interrupts the supply of heat to the room, causing indoor temperature fluctuations and poor comfort, but also the method of "extracting heat" from the room is inefficient in extremely cold weather. While resistance wire heating defrosting is simple to control, it directly consumes high-grade electrical energy, resulting in huge energy consumption, which contradicts the original intention of economic and energy-saving. To address the aforementioned issues, this application proposes a defrosting device for a detachable solar PVT-assisted air source heat pump. Utility Model Content

[0004] In response to the problems in related technologies, this utility model proposes a defrosting device for a detachable solar PVT-assisted air source heat pump to overcome the aforementioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A defrosting device for a detachable solar PVT-assisted air source heat pump includes an air source heat pump body. An air filter is installed on the front side of the air source heat pump body. The air filter is connected to the air inlet of the exhaust fan inside the air source heat pump body. A PVT plate is installed on the top of the air source heat pump body. A heat exchange box is installed at the bottom of the PVT plate. Multiple heat dissipation fins are installed inside the heat exchange box and are fixedly connected to the PVT plate. An adaptive ventilation mechanism includes a ventilation box, which is fixedly installed on the front side of the air source heat pump body. An air inlet pipe is installed on the front side of the air source heat pump body. The air inlet pipe is connected to the exhaust port of the exhaust fan inside the air source heat pump body, and the top end of the air inlet pipe is connected to the ventilation box. Two conduits are installed on the top of the ventilation box, and two through pipes are installed on one side of the ventilation box. The through pipes are connected to the air source heat pump body, and the conduits are connected to the heat exchange box. The mounting and fixing mechanism includes four brackets, which are slidably installed on the top of the air source heat pump body. A mounting bracket is fixedly installed on the bottom of the PVT plate, and the four brackets are engaged with the mounting bracket.

[0006] Preferably, the adaptive ventilation mechanism further includes a positioning shaft, which is rotatably mounted on the inner wall of the ventilation box, and two adjusting plates are fixedly mounted on the positioning shaft. The two adjusting plates cooperate with two guide tubes and two through pipes.

[0007] By setting two adjustment plates, the two ducts or two pipes can be isolated and sealed, so that the gas in the air exchange box can be switched and exhausted between the two ducts or two pipes, while the positioning shaft can be used for adjustment.

[0008] Preferably, mounting blocks are fixedly installed on both sides of the air exchange box, a memory alloy spring is installed on one side of the mounting block, connecting blocks are fixedly installed on both ends of the positioning shaft, the memory alloy spring is fixedly connected to the corresponding connecting block, and isolation boxes are fixedly installed on both sides of the air exchange box, with the mounting blocks, memory alloy springs and connecting blocks all located inside the isolation boxes.

[0009] By incorporating a shape memory alloy spring, the spring's length can be adjusted in response to temperature changes. This allows the spring to push against the connecting block and positioning shaft at an angle while the mounting block is fixed, thereby enabling the adjustment plate to change angles.

[0010] Preferably, the mounting and fixing mechanism further includes two bidirectional screws, and four positioning seats are installed on the top of the air source heat pump body. The bidirectional screws are rotatably installed between two corresponding positioning seats, and two drive blocks are threadedly connected to the bidirectional screws. The drive blocks are fixedly connected to the corresponding card seats.

[0011] The two drive blocks are connected by a double screw to the two drive blocks in opposite directions, which in turn causes the two card holders to move closer to each other, so that the two card holders can clamp and fix the mounting bracket.

[0012] Preferably, the heat exchange box has two exhaust pipes installed at the bottom, and the exhaust pipes are connected to the air source heat pump body.

[0013] By using an exhaust pipe, the heated gas inside the heat exchange box is discharged and introduced into the air source heat pump body to heat and defrost the air source heat pump body.

[0014] Preferably, the bottom of the heat exchange box is equipped with four mounting pipes, and the bottom of the mounting pipes is rotatably connected with threaded sleeves. The four threaded sleeves are respectively threadedly connected to two exhaust pipes and two conduits.

[0015] The installation tube is fitted with a threaded sleeve, which is threadedly connected to two exhaust pipes and two conduits, allowing for the installation and removal of the two exhaust pipes and two conduits, thus facilitating the installation and removal of the PVT plate.

[0016] In summary, the technical effects and advantages of this utility model are as follows: The shape memory alloy spring is sensitive to temperature changes and can automatically expand and contract with the ambient temperature, thereby driving the regulating plate to switch the air duct. This process is completely passive and does not require external power sources or complex circuits such as sensors, controllers or electric actuators. It has a simple structure, high reliability, and low failure rate, achieving true "adaptive" and "maintenance-free" operation.

[0017] The PVT panel generates electricity while collecting heat energy, and the air flowing through the heat exchange box is heated by the heat dissipation fins. The adaptive ventilation mechanism can automatically guide the cold air to the PVT panel for heating under low temperature frosting conditions, and then introduce the hot air into the heat pump body to defrost the evaporator, which significantly improves the defrosting efficiency. It can replace the electrical energy originally used for defrosting with free solar thermal energy, reduce defrosting energy consumption, and improve the overall energy efficiency of the system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a schematic diagram of the adaptive ventilation mechanism of this utility model; Figure 4 This is a schematic diagram of the installation and fixing mechanism of this utility model; Figure 5 This is a schematic diagram of the catheter structure of this utility model.

[0019] In the picture: 1. Air source heat pump body; 2. Air filter; 3. PVT plate; 4. Adaptive ventilation mechanism; 41. Ventilation box; 42. Positioning shaft; 43. Adjustment plate; 44. Pipe; 45. Through pipe; 46. Mounting block; 47. Connecting block; 48. Memory alloy spring; 5. Mounting and fixing mechanism; 51. Card seat; 52. Mounting bracket; 53. Positioning seat; 54. Drive block; 55. Bidirectional screw; 6. Inlet pipe; 7. Heat exchange box; 8. Heat dissipation fins; 9. Exhaust pipe; 10. Mounting pipe; 11. Threaded sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-5 A defrosting device for a detachable solar PVT-assisted air source heat pump includes an air source heat pump body 1, an air filter 2 installed on the front side of the air source heat pump body 1, the air filter 2 being connected to the air inlet of the exhaust fan inside the air source heat pump body 1, a PVT plate 3 installed on the top of the air source heat pump body 1, a heat exchange box 7 installed at the bottom of the PVT plate 3, and multiple heat dissipation fins 8 installed inside the heat exchange box 7, which are fixedly connected to the PVT plate 3. The adaptive ventilation mechanism 4 includes a ventilation box 41, which is fixedly installed on the front side of the air source heat pump body 1. An air inlet pipe 6 is installed on the front side of the air source heat pump body 1. The air inlet pipe 6 is connected to the exhaust port of the exhaust fan inside the air source heat pump body 1, and the top end of the air inlet pipe 6 is connected to the ventilation box 41. Two conduits 44 are installed on the top of the ventilation box 41, and two through pipes 45 are installed on one side of the ventilation box 41. The through pipes 45 are connected to the air source heat pump body 1, and the conduits 44 are connected to the heat exchange box 7. The mounting and fixing mechanism 5 includes four card holders 51, which are slidably mounted on the top of the air source heat pump body 1. A mounting bracket 52 is fixedly mounted on the bottom of the PVT plate 3, and the four card holders 51 are engaged with the mounting bracket 52.

[0022] Reference Figure 1 and Figure 3 The adaptive ventilation mechanism 4 also includes a positioning shaft 42, which is rotatably mounted on the inner wall of the ventilation box 41. Two adjusting plates 43 are fixedly mounted on the positioning shaft 42, and these adjusting plates 43 cooperate with two guide tubes 44 and two through pipes 45. Mounting blocks 46 are fixedly mounted on both sides of the ventilation box 41, and a shape memory alloy spring 48 is mounted on one side of each mounting block 46. Connecting blocks 47 are fixedly mounted on both ends of the positioning shaft 42, and the shape memory alloy springs 48 are fixedly connected to their corresponding connecting blocks 47. Isolation boxes are fixedly mounted on both sides of the ventilation box 41. The mounting blocks 46 and shape memory alloy springs... Both 48 and connecting block 47 are located inside the isolation box. The two adjusting plates 43 can isolate and seal the two conduits 44 or the two through pipes 45, so that the gas in the air exchange box 41 can be converted and exhausted through the two conduits 44 or the two through pipes 45. At the same time, the positioning shaft 42 is used for adjustment. The shape memory alloy spring 48 can adjust its length when there is a temperature change. Thus, under the fixation of the mounting block 46, the connecting block 47 and the positioning shaft 42 can be pushed to change the angle, and then the adjusting plate 43 can be adjusted to change the angle.

[0023] Reference Figure 4The mounting and fixing mechanism 5 also includes two bidirectional screws 55. Four positioning seats 53 are installed on the top of the air source heat pump body 1. The bidirectional screws 55 are rotatably installed between the corresponding two positioning seats 53, and two drive blocks 54 are threadedly connected to the bidirectional screws 55. The drive blocks 54 are fixedly connected to the corresponding card seats 51. Through the threaded connection between the bidirectional screws 55 and the two drive blocks 54, the two drive blocks 54 can be driven to move in opposite directions, and the two card seats 51 can be driven to move closer to each other, so that the two card seats 51 can be clamped and fixed to the mounting bracket 52.

[0024] Reference Figure 5 Two exhaust pipes 9 are installed at the bottom of the heat exchange box 7. The exhaust pipes 9 are connected to the air source heat pump body 1. Four mounting pipes 10 are installed at the bottom of the heat exchange box 7. Threaded sleeves 11 are rotatably connected to the bottom of the mounting pipes 10. The four threaded sleeves 11 are threadedly connected to the two exhaust pipes 9 and the two conduits 44, respectively. Through the exhaust pipes 9, the heated gas in the heat exchange box 7 is discharged and introduced into the air source heat pump body 1 to heat and defrost the air source heat pump body 1. Through the threaded sleeves 11 on the mounting pipes 10, and the threaded sleeves 11 are threadedly connected to the two exhaust pipes 9 and the two conduits 44, the two exhaust pipes 9 and the two conduits 44 can be installed and disassembled, thereby facilitating the installation and disassembly of the PVT plate 3.

[0025] Working principle: At normal temperature, the exhaust fan in the air source heat pump body (1) draws air from the outside through the air filter element 2 and introduces it into the air inlet pipe 6 through the exhaust port of the exhaust fan. The air inlet pipe 6 injects air into the air exchange box 41 and introduces it into the air source heat pump body 1 through the two pipes 45 to provide heat source for the evaporator in the air source heat pump body 1. When the temperature is too low, the memory alloy spring 48 deforms and one end of the memory alloy spring 48 pushes the connecting block 47 to move. The connecting block 47 drives the positioning shaft 42 to change angle. The positioning shaft 42 drives the two adjusting plates 43 to change angle, thereby closing the two pipes 45 and connecting the two conduits 44 to the air exchange box 41. The air in the air exchange box 41 is introduced into the heat exchange box 7, and the heat on the PVT plate 3 is converted through the heat dissipation fins 8. Finally, it is introduced into the air source heat pump body 1 through the exhaust pipe 9 to heat the evaporator and defrost it. When it is necessary to disassemble or assemble the PVT plate 3, rotate the two bidirectional screws 55. The bidirectional screws 55 are threadedly connected to the two drive blocks 54, which can drive the two drive blocks 54 to move in opposite directions and drive the two card holders 51 to move closer to each other, so that the two card holders 51 can be clamped and fixed to the mounting bracket 52, thereby enabling the disassembly and assembly of the PVT plate 3. Furthermore, the threaded sleeve 11 on the mounting tube 10 is threadedly connected to the two exhaust pipes 9 and the two conduits 44, thereby enabling the installation and disassembly of the two exhaust pipes 9 and the two conduits 44, thus facilitating the installation and disassembly of the PVT plate 3.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A defrosting device for a detachable solar PVT-assisted air source heat pump, comprising an air source heat pump body (1), characterized in that, An air filter (2) is installed on the front side of the air source heat pump body (1). The air filter (2) is connected to the air inlet of the exhaust fan inside the air source heat pump body (1). A PVT plate (3) is installed on the top of the air source heat pump body (1). A heat exchange box (7) is installed at the bottom of the PVT plate (3). Multiple heat dissipation fins (8) are installed inside the heat exchange box (7). The multiple heat dissipation fins (8) are fixedly connected to the PVT plate (3). An adaptive ventilation mechanism (4) includes a ventilation box (41), which is fixedly installed on the front side of the air source heat pump body (1). An air inlet pipe (6) is installed on the front side of the air source heat pump body (1). The air inlet pipe (6) is connected to the exhaust port of the exhaust fan in the air source heat pump body (1), and the top end of the air inlet pipe (6) is connected to the ventilation box (41). Two conduits (44) are installed on the top of the ventilation box (41), and two through pipes (45) are installed on one side of the ventilation box (41). The through pipes (45) are connected to the air source heat pump body (1), and the conduits (44) are connected to the heat exchange box (7). The mounting and fixing mechanism (5) includes four card holders (51). The four card holders (51) are slidably installed on the top of the air source heat pump body (1). The bottom of the PVT plate (3) is fixedly installed with a mounting bracket (52). The four card holders (51) are engaged with the mounting bracket (52).

2. The defrosting device for the detachable solar PVT-assisted air source heat pump according to claim 1, characterized in that, The adaptive ventilation mechanism (4) also includes a positioning shaft (42), which is rotatably mounted on the inner wall of the ventilation box (41), and two adjusting plates (43) are fixedly mounted on the positioning shaft (42). The two adjusting plates (43) cooperate with two conduits (44) and two through pipes (45).

3. The defrosting device for the detachable solar PVT-assisted air source heat pump according to claim 2, characterized in that, Mounting blocks (46) are fixedly installed on both sides of the ventilation box (41). A memory alloy spring (48) is installed on one side of the mounting block (46). Connecting blocks (47) are fixedly installed on both ends of the positioning shaft (42). The memory alloy spring (48) is fixedly connected to the corresponding connecting block (47). Isolation boxes are fixedly installed on both sides of the ventilation box (41). The mounting block (46), the memory alloy spring (48), and the connecting block (47) are all located inside the isolation box.

4. The defrosting device for the detachable solar PVT-assisted air source heat pump according to claim 1, characterized in that, The mounting and fixing mechanism (5) also includes two bidirectional screws (55). Four positioning seats (53) are installed on the top of the air source heat pump body (1). The bidirectional screws (55) are rotatably installed between the corresponding two positioning seats (53), and two drive blocks (54) are threadedly connected to the bidirectional screws (55). The drive blocks (54) are fixedly connected to the corresponding card seats (51).

5. The defrosting device for the detachable solar PVT-assisted air source heat pump according to claim 1, characterized in that, Two exhaust pipes (9) are installed at the bottom of the heat exchange box (7), and the exhaust pipes (9) are connected to the air source heat pump body (1).

6. The defrosting device for the detachable solar PVT-assisted air source heat pump according to claim 5, characterized in that, The heat exchange box (7) is equipped with four mounting pipes (10) at the bottom. The bottom of the mounting pipes (10) is rotatably connected with threaded sleeves (11). The four threaded sleeves (11) are respectively threadedly connected to two exhaust pipes (9) and two conduits (44).

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