A variable frequency air source heat pump heating device

Abstract

This utility model relates to the field of heating equipment technology, and in particular to a variable frequency air source heat pump heating device. This utility model provides such a variable frequency air source heat pump heating device, including a shell, a protective door, a fixed base, an exhaust fan, a control panel, an air guide hood, an air compressor, an air duct, and a heat exchange box. The protective door is rotatably mounted on the front of the shell, and the fixed base is fixedly connected to the top of the shell. An exhaust fan is mounted on the fixed base. The control panel is located on the upper front of the shell, and the air guide hood is installed on the upper inner part of the shell. An air compressor is installed inside the shell, and the bottom of the air guide hood is connected to and communicates with the air duct. The other end of the air duct is connected to the air compressor, and the heat exchange box is connected to the right side of the air compressor. Through a dual heat exchange design—first preheating the circulating water using exhaust waste heat, and then heating it using the high temperature of compressed air—energy cascade utilization and efficient recovery are achieved, improving overall thermal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a variable frequency air source heat pump heating device. Background Technology

[0002] Variable frequency air source heat pump heating equipment is a type of heating equipment that utilizes air source heat pump technology and a variable frequency compressor to achieve efficient heating. It combines the advantages of variable frequency technology and air source heat pumps, intelligently adjusting the compressor's operating frequency according to changes in indoor and outdoor temperatures and user needs, thereby achieving efficient energy saving and stable heating.

[0003] Patent CN212481748U discloses an air-source floor heating inverter air conditioning device, including: an inverter compressor, a gas-liquid separator, a finned heat exchanger, an air conditioning water heat exchanger, a first electronic expansion valve, and a liquid storage tank. Through a reasonable design, the air conditioning water heat exchanger is connected to the user's floor heating water system, and the floor heating water system and the air conditioning water system are connected in parallel. While this patent simplifies the system structure, improves the heating capacity of the equipment at low ambient temperatures, meets the stability requirements under different heating and cooling loads, and is suitable for wide application in various regions, in actual use, the gas discharged after heat exchange still contains a certain amount of residual heat. Because no waste heat recovery mechanism is set up, this heat energy is directly discharged into the environment, resulting in energy waste and reducing the overall thermal efficiency of the system.

[0004] Therefore, there is a need for a variable frequency air source heat pump heating system with waste heat recovery capabilities. Utility Model Content

[0005] To overcome the shortcomings of current patents where the exhaust gas still contains a certain amount of residual heat after heat exchange, and because no residual heat recovery mechanism is set up, this part of the heat energy is directly discharged into the environment, resulting in energy waste and reducing the overall thermal efficiency of the system, this utility model provides a variable frequency air source heat pump heating device with residual heat recovery.

[0006] The technical implementation scheme of this utility model is as follows: A variable frequency air source heat pump heating device includes a shell, a protective door, a fixed base, an exhaust fan, a control panel, an air guide hood, an air compressor, an air duct, a heat exchange box, a first heat conduction plate, and a first water pipe. A protective door is rotatably installed on the front side of the shell. A fixed base is fixedly connected to the top of the shell, and an exhaust fan is installed on the fixed base. A control panel is located on the upper front side of the shell. An air guide hood is installed on the upper inner part of the shell. An air compressor is installed inside the shell. An air duct is connected to and communicates with the bottom of the air guide hood, and the other end of the air duct is connected to the air compressor. The air compressor has a heat exchange box connected to its right side. The heat exchange box contains multiple first heat-conducting plates. A first water pipe is installed on the right side of the outer shell, passing through multiple first heat-conducting plates. The compressor also includes an exhaust box, a connecting pipe, a second heat-conducting plate, a second water pipe, and an exhaust pipe. The exhaust box is fixedly connected to the right side of the outer shell. A connecting pipe is connected to and communicates with the bottom of the exhaust box. The lower end of the connecting pipe is connected to the heat exchange box. Multiple second heat-conducting plates are installed inside the exhaust box. A second water pipe is installed on the right side of the exhaust box, passing through multiple second heat-conducting plates and connecting to the first water pipe. An exhaust pipe is connected to the right side of the exhaust box.

[0007] Optionally, it also includes a fixed frame, a guide rod, a piston, and an elastic element. The fixed frame is fixedly connected inside the connecting pipe. The guide rod is slidably arranged in the middle of the fixed frame. The piston is arranged at the top of the guide rod and contacts the inner wall of the connecting pipe. An elastic element is sleeved on the guide rod, and the two ends of the elastic element are connected to the fixed frame and the guide rod, respectively.

[0008] Optionally, it also includes guide blocks, mounting frames, and filter cotton. Two guide blocks are fixedly connected to the upper part of the housing, and the two guide blocks are slidably mounted on the mounting frame. Filter cotton is installed inside the mounting frame.

[0009] Optionally, a dustproof screen is also included, with the top of the housing covered by a dustproof screen.

[0010] Optionally, it also includes a support base, with two support bases fixedly connected to the bottom of the housing.

[0011] Optionally, two waist-shaped holes are provided on both the front and rear sides of the support base.

[0012] Compared with the prior art, this utility model provides a variable frequency air source heat pump heating device with the following beneficial effects: 1. By first using the waste heat of exhaust to preheat the circulating water and then using the high temperature of compressed air for heating, the dual heat exchange design realizes the cascade utilization and efficient recovery of energy, and improves the overall thermal efficiency.

[0013] 2. When the equipment stops or the airflow reverses, the elastic element resets, pushing the piston downward to tightly fit the inner wall of the connecting pipe, preventing gas backflow, ensuring unidirectional airflow, and maintaining stable system operation.

[0014] 3. The filter cotton performs fine filtration of the air, removing fine particles and pollutants, thereby ensuring the quality of the air entering the air compressor, reducing wear on the compressor caused by impurities, and improving system operating efficiency and heat exchange effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional sectional view of the outer shell, heat exchange box, and exhaust box of this utility model.

[0017] Figure 3 This is a three-dimensional cross-sectional view of the outer shell, air guide cover, and air compressor of this utility model.

[0018] Figure 4 This is a three-dimensional sectional view of the first water pipe, the exhaust box, and the second water pipe of this utility model.

[0019] Figure 5 This is a three-dimensional sectional view of the exhaust box, connecting pipe, and piston of this utility model.

[0020] Figure 6 This is a three-dimensional sectional view of the fixing frame, guide rod, and elastic element of this utility model.

[0021] Figure 7 This is a three-dimensional sectional view of the guide block, mounting frame, and filter cotton of this utility model.

[0022] In the attached diagrams: 1: Outer shell; 101: Protective door; 2: Mounting base; 3: Exhaust fan; 4: Control panel; 5: Air guide hood; 6: Air compressor; 7: Air guide pipe; 8: Heat exchange box; 9: First heat conduction plate; 10: First water pipe; 11: Exhaust box; 12: Connecting pipe; 13: Second heat conduction plate; 14: Second water pipe; 15: Exhaust pipe; 16: Mounting bracket; 17: Guide rod; 18: Piston; 19: Elastic element; 20: Guide block; 21: Mounting frame; 22: Filter cotton; 23: Dustproof net; 24: Support base; 25: Waist-shaped hole. Detailed Implementation

[0023] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example 1: A variable frequency air source heat pump heating device, please refer to... Figures 1-7 The system includes an outer shell 1, a protective door 101, a fixed base 2, an exhaust fan 3, a control panel 4, an air guide hood 5, an air compressor 6, an air duct 7, a heat exchange box 8, a first heat-conducting plate 9, and a first water pipe 10. The protective door 101 is rotatably mounted on the front of the outer shell 1. The fixed base 2 is fixedly connected to the top of the outer shell 1, and the exhaust fan 3 is mounted on the fixed base 2. The control panel 4 is located on the upper front of the outer shell 1. The air guide hood 5 is installed on the upper inner part of the outer shell 1. The air compressor 6 is installed inside the outer shell 1. The bottom of the air guide hood 5 is connected to and communicates with the air duct 7, and the other end of the air duct 7 is connected to the air compressor 6. The heat exchange box 8 is connected to the right side of the air compressor 6, and several first heat-conducting plates 9 are installed inside the heat exchange box 8. The first water pipe 10 is installed on the right side of the outer shell 1, and the first water pipe 10 passes through several first heat-conducting plates 9. The system also includes an exhaust box 11, a connecting pipe 12, a second heat-conducting plate 13, and a second water pipe 10. The outer casing 1 has a pipe 14 and an exhaust pipe 15. An exhaust box 11 is fixedly connected to the right side of the outer casing 1. A connecting pipe 12 is connected to the bottom of the exhaust box 11 and the lower end of the connecting pipe 12 is connected to the heat exchange box 8. Several second heat conduction plates 13 are installed inside the exhaust box 11. A second water pipe 14 is installed on the right side of the exhaust box 11. The second water pipe 14 passes through several second heat conduction plates 13 and is connected to the first water pipe 10. An exhaust pipe 15 is connected to the right side of the exhaust box 11. A dustproof net 23 is covered on the top of the outer casing 1 to initially block large particles of dust and impurities and prevent them from adhering to the exhaust fan 3. Two support bases 24 are fixedly connected to the bottom of the outer casing 1 for stable placement of the equipment. Two waist-shaped holes 25 are opened on the front and rear sides of the support base 24 to facilitate the use of bolts to fix the equipment. The protective door 101 can be rotated and opened to facilitate the inspection and maintenance of the air compressor 6 inside the outer casing 1.

[0025] When this equipment is needed, the exhaust fan 3 and air compressor 6 are started via the control panel 4. The exhaust fan 3 begins to work, using negative pressure to draw outside air into the air guide shroud 5, and then into the air compressor 6 through the air guide pipe 7. Inside the air compressor 6, the air is compressed under high pressure, causing its temperature to rise rapidly and generating a large amount of heat energy, forming high-temperature, high-pressure air. This high-temperature, high-pressure air is discharged from the right side of the air compressor 6 and enters the heat exchange box 8. At the same time, low-temperature circulating water from the heating system, driven by the water pump, first enters the second water pipe 14 in the exhaust box 11. At this time, the high-temperature air discharged from the heat exchange box 8, still carrying residual heat, enters the exhaust box 11 through the connecting pipe 12. This residual heat is transferred to the second heat conduction plate 13. The circulating water in the second water pipe 14 is preheated. The preheated circulating water flows into the first water pipe 10 in the heat exchange box 8. In the heat exchange box 8, high-temperature and high-pressure air passes through multiple first heat conduction plates 9, efficiently transferring heat to the circulating water in the first water pipe 10, further increasing its temperature and completing the heating process to form high-temperature hot water that can be used for heating. The heated hot water is output from the right side of the outer shell 1 and sent to the heating terminal to release heat. After the temperature drops, it returns to the equipment to form a cycle. The air, after two heat exchanges, is finally discharged from the air outlet pipe 15. By first using the waste heat of the exhaust to preheat the circulating water and then using the high temperature of the compressed air for heating, the cascade utilization and efficient recovery of energy are achieved, improving the overall thermal efficiency.

[0026] Example 2: Based on Example 1, please refer to... Figure 5 and Figure 6 It also includes a fixed frame 16, a guide rod 17, a piston 18, and an elastic element 19. The fixed frame 16 is fixedly connected inside the connecting pipe 12. The guide rod 17 is slidably arranged in the middle of the fixed frame 16. The piston 18 is arranged at the top of the guide rod 17. The piston 18 contacts the inner wall of the connecting pipe 12. The elastic element 19 is sleeved on the guide rod 17. The two ends of the elastic element 19 are connected to the fixed frame 16 and the guide rod 17, respectively.

[0027] When the gas pressure inside the heat exchanger 8 is higher than that inside the exhaust box 11, the gas pushes the piston 18 to move upward against the elastic force of the elastic element 19, opening the channel and allowing the gas to flow to the exhaust box 11. When the equipment stops or the airflow reverses, the elastic element 19 resets, pushing the piston 18 downward to tightly fit the inner wall of the connecting pipe 12, preventing the gas from flowing back, ensuring unidirectional airflow, and maintaining stable system operation.

[0028] Please see Figure 2 and Figure 7It also includes guide blocks 20, mounting frame 21 and filter cotton 22. Two guide blocks 20 are fixedly connected to the upper part of the outer shell 1. The two guide blocks 20 are slidably mounted on the mounting frame 21. The filter cotton 22 is installed inside the mounting frame 21. By pulling the mounting frame 21, the filter cotton 22 can be removed from the upper part of the outer shell 1 for cleaning or replacement.

[0029] Before flowing through the air guide shroud 5, the air first enters the mounting frame 21, where the filter cotton 22 performs fine filtration to remove fine particles and pollutants, thereby ensuring the quality of the air entering the air compressor 6, reducing wear on the compressor caused by impurities, and improving system operating efficiency and heat exchange effect.

[0030] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A variable frequency air source heat pump heating device, comprising a shell (1), a protective door (101), a fixed base (2), an exhaust fan (3), a control panel (4), an air guide hood (5), an air compressor (6), an air guide pipe (7), a heat exchange box (8), a first heat conduction plate (9), and a first water pipe (10). The protective door (101) is rotatably provided on the front side of the shell (1), and the fixed base (2) is fixedly connected to the top of the shell (1). An exhaust fan (3) is installed on the fixed base (2), and the upper part of the front side of the shell (1) is provided with a protective door (101). It has a control panel (4), an air guide shroud (5) installed in the upper part of the outer casing (1), an air compressor (6) installed inside the outer casing (1), an air guide pipe (7) connected to and communicating with the bottom of the air guide shroud (5), the other end of the air guide pipe (7) connected to the air compressor (6), a heat exchange box (8) connected to the right side of the air compressor (6), a number of first heat conduction plates (9) installed inside the heat exchange box (8), a first water pipe (10) installed on the right side of the outer casing (1), the first water pipe (10) passing through the number of first heat conduction plates (9), and its characteristics are: It also includes an exhaust box (11), a connecting pipe (12), a second heat-conducting plate (13), a second water pipe (14), and an exhaust pipe (15). An exhaust box (11) is fixedly connected to the right side of the outer shell (1). The bottom of the exhaust box (11) is connected to and communicates with the connecting pipe (12). The lower end of the connecting pipe (12) is connected to the heat exchange box (8). Multiple second heat-conducting plates (13) are installed inside the exhaust box (11). A second water pipe (14) is installed on the right side of the exhaust box (11). The second water pipe (14) passes through multiple second heat-conducting plates (13) and is connected to the first water pipe (10). An exhaust pipe (15) is connected to the right side of the exhaust box (11).

2. The variable frequency air source heat pump heating device according to claim 1, characterized in that: It also includes a fixed frame (16), a guide rod (17), a piston (18), and an elastic element (19). The fixed frame (16) is fixedly connected inside the connecting pipe (12). The guide rod (17) is slidably arranged in the middle of the fixed frame (16). The piston (18) is arranged at the top of the guide rod (17). The piston (18) contacts the inner wall of the connecting pipe (12). The elastic element (19) is sleeved on the guide rod (17). The two ends of the elastic element (19) are connected to the fixed frame (16) and the guide rod (17) respectively.

3. A variable frequency air source heat pump heating device according to claim 2, characterized in that: It also includes guide blocks (20), mounting frames (21) and filter cotton (22). Two guide blocks (20) are fixedly connected to the upper part of the outer shell (1). The two guide blocks (20) are slidably mounted on the mounting frame (21). The filter cotton (22) is installed inside the mounting frame (21).

4. A variable frequency air source heat pump heating device according to claim 3, characterized in that: It also includes a dustproof net (23), and the top of the outer shell (1) is covered with a dustproof net (23).

5. A variable frequency air source heat pump heating device according to claim 4, characterized in that: It also includes a support base (24), and the bottom of the outer shell (1) is fixedly connected to two support bases (24).

6. A variable frequency air source heat pump heating device according to claim 5, characterized in that: The support base (24) has two waist-shaped holes (25) on both the front and rear sides.

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