An air source heat pump chiller / hot water unit and its operating method

Abstract

This invention relates to the field of energy heating technology and discloses an air source heat pump chiller / hot water unit, including a compressor for compressing refrigerant, a condenser for heat transfer, a throttling device for restricting refrigerant flow, an evaporator for heat absorption, and a connecting pipe for connecting the compressor, condenser, throttling device, and evaporator. A water tank filled with water is located on the outside of the condenser to absorb heat from the condenser. The invention utilizes refrigerant passing through fan blades, causing the fan blades to rotate, which in turn drives the inner ring to rotate synchronously. This causes the driving magnet to rotate synchronously and continuously interact with evenly distributed pressure blocks. When the driving magnet approaches the pressure blocks, it repels the magnets on the pressure blocks with opposite magnetic properties, causing the pressure blocks to intermittently lift and press against evenly distributed displacement protrusions. These displacement protrusions then drive the outer ring seat to rotate, causing the rolling rod to follow the rotation and crush the evaporator straight tube. Friction generates heat, crushing and heating away the frost on the outside of the evaporator straight tube.

Description

Technical Field

[0001] This invention relates to the field of energy heating technology, specifically to an air source heat pump chiller / hot water unit and its operating method. Background Technology

[0002] An air source heat pump is an energy-saving device that uses high-grade energy to move heat from a low-grade heat source (air) to a high-grade heat source. Simply put, a fan blows air into the evaporator, causing the low-temperature, low-pressure liquid refrigerant (mist) inside the evaporator to vaporize into a gaseous refrigerant. This gaseous refrigerant is then compressed by a compressor into a high-temperature, high-pressure gaseous refrigerant, which is then sent to the condenser. A water tank is located outside the condenser, allowing the high-temperature, high-pressure gas inside the condenser to heat the water in the tank, forming high-temperature water. The high-temperature, high-pressure gas then cools down into a low-temperature, high-pressure liquid, which passes through a throttling valve (expansion valve) to form a low-temperature, low-pressure liquid (mist), and is then sent back into the evaporator, completing one cycle.

[0003] During this process, the evaporator is in direct contact with the outside air. This makes it easy for frost to form on the evaporator when the outside temperature is low and the humidity is high. This reduces the heat absorption efficiency of the refrigerant inside the evaporator, preventing the low-temperature, low-pressure liquid (mist) refrigerant from being converted into a low-temperature, low-pressure gaseous refrigerant. This can damage the compressor or cause the high-temperature, high-pressure gas compressed by the compressor to be too cold to meet the purpose of water heating. To address this, existing evaporators perform defrosting operations, including natural defrosting, water defrosting, hot gas defrosting, and electric defrosting.

[0004] Natural defrosting requires shutting down the air source heat pump and using ambient heat to melt the frost on the evaporator. This method takes a long time, and the air source heat pump cannot effectively heat water during its shutdown period. Water defrosting involves spraying water onto the frosted area, using the temperature difference between the water and the frost to remove it. This method wastes water and requires wiping the water clean after spraying to prevent re-frost formation, making it time-consuming and labor-intensive. Hot air defrosting uses a frost probe to detect frost, and then the compressor's exhaust port sends hot air to the evaporator to melt the frost. However, this method takes a long time, requires frequent defrosting, and causes excessive heat loss from the compressor. Electric defrosting uses heating wires installed in the compressor. When defrosting is needed, the heating wires are energized to complete the process. However, this method consumes additional electricity, and the exposed heating wires have a limited lifespan. Summary of the Invention

[0005] To address the shortcomings of existing air source heat pumps mentioned in the background art during use, this invention provides an air source heat pump chiller / hot water unit and its operating method. It features advantages such as refrigerant impacting the fan blades to drive the inner ring rotation, the rotation of the power magnet causing a repulsive reaction with the top pressure block, the movement of the top pressure block squeezing and displacing the protrusion, the pressure on the displacing protrusion driving the outer ring seat to rotate, the outer ring seat driving the rolling rod to rotate and crush the evaporator straight tube, the rolling rod's frictional rotation impacting the evaporator straight tube, the hot air balloon inputting heat to the rolling rod to melt the frost, and vibration shaking off the frost on the evaporator. This solves the technical problems of slow frost removal and large heat loss mentioned in the background art.

[0006] The present invention provides the following technical solution: an air source heat pump chiller unit, comprising a compressor for compressing refrigerant, a condenser for heat transfer, a throttling device for throttling refrigerant, an evaporator for absorbing heat, and a connecting pipe for connecting the compressor, condenser, throttling device and evaporator;

[0007] A water tank is provided on the outside of the condenser, and the water tank is filled with water to absorb the heat of the condenser;

[0008] The water tank is equipped with a heating device to transfer enough heat to melt the frost.

[0009] The evaporator is equipped with a rolling device for defrosting the evaporator by rolling it. The rolling device is connected to a hot air device to complete hot air defrosting.

[0010] The evaporator is equipped with a transmission device to drive the rolling device to roll.

[0011] Preferably, the hot air device includes a hot air balloon disposed in a water tank, the hot air balloon being filled with gas for absorbing heat from the water, two symmetrical air distribution pipes being provided on both sides of the evaporator, the hot air balloon being connected to the air distribution pipes via an air supply pipe, and evenly distributed transmission pipes being fixedly connected to the air distribution pipes, one end of the transmission pipes being connected to a rolling device for inputting hot air into the rolling device, and an electronic control switch being provided on the air supply pipes for controlling the opening and closing of the heat transfer of the hot air balloon.

[0012] Preferably, the evaporator includes a straight evaporation tube and an evaporation bend connecting two adjacent straight evaporation tubes.

[0013] Preferably, the rolling device includes two symmetrical outer ring seats on the outside of the evaporator straight tube. The inner sidewall of the outer ring seat is provided with a slot. The bottom of the slot is fixedly connected with evenly distributed displacement protrusions for cooperating with the transmission device to rotate the outer ring seat. The opposite ends of the two outer ring seats are movably connected with four evenly distributed rolling rods for rolling contact with the outside of the evaporator straight tube. The two ends of the rolling rods are provided with rotating rods, which are movably sleeved in the outer ring seat to limit the position of the rolling rods.

[0014] Preferably, the rolling rod is hexagonal prism-shaped and is used to impact and crush the evaporator tube during rolling. The edges of the rolling rod are rounded, and the rolling rod contacts the outer wall of the evaporator tube.

[0015] Preferably, the rolling rod and the rotating rod are hollow structures. The outer ring seat has an annular air intake chamber and an annular flow chamber. The air intake chamber is connected to the rotating rod through the flow chamber. A limiting plate is movably sleeved in the air intake chamber to prevent gas leakage in the air intake chamber during the rotation of the outer ring seat. The end of the limiting plate away from the flow chamber is connected to one end of the transmission pipe for inputting hot gas into the outer ring seat and the rolling rod.

[0016] Preferably, the transmission device includes a central roller located at the center of the evaporator straight tube. Symmetrical inner rings are respectively fitted onto both ends of the central roller. Evenly distributed fan blades are fixedly connected to the inner sidewall of each inner ring to receive the power of the flowing refrigerant. Two sets of symmetrical fixed blocks are fixedly connected to the outer side of the evaporator straight tube. A top pressure block is movably fitted inside each fixed block. A movable cavity is formed within each fixed block, and a spring is fixedly connected to the bottom end of the movable cavity. The top end of the spring is fixedly connected to the bottom end of the top pressure block to limit its position. A power magnet is fixedly fitted onto the inner ring. A magnet repelling the power magnet is provided at the end of the top pressure block facing the inner ring. The center of the top pressure block coincides with the center of the power magnet to receive the repulsive force provided by the power magnet.

[0017] Preferably, the inner wall of the evaporator tube is provided with a groove for placing the inner ring, and the inner ring is movably fitted into the groove to restrict the rotation of the inner ring.

[0018] Preferably, the end of the top pressing block away from the inner ring has a rounded corner, the center of the displacement protrusion coincides with the center of the inner ring, and the displacement protrusion has an inclined edge that is opposite to the top of the top pressing block to receive the power of the top pressing block's upward movement.

[0019] An operating method for an air source heat pump chiller / hot water unit includes the following steps:

[0020] S1. The compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant, which is then input into the condenser. The condenser releases heat, causing the water in the water tank and the hot air balloon to absorb heat, thus opening the electric control switch of the hot air balloon.

[0021] S2. The refrigerant is atomized by the expansion valve and enters the evaporator, flows through the fan blades, and drives the inner ring to rotate;

[0022] S3. The inner ring drives the power magnet to rotate, and the power magnet applies a repulsive force to the top pressure block. The top pressure block moves and squeezes the displaced protrusion, which drives the outer ring seat to rotate.

[0023] S4. The outer ring seat drives the rolling rod to rotate. The rolling rod crushes and vibrates the evaporator tube. The hot air balloon inputs heat into the rolling rod, which heats up the rolling rod and melts the frost on the evaporator tube.

[0024] S5. The refrigerant in the evaporator absorbs heat to melt the frost at the evaporator bend.

[0025] S6, the refrigerant flows back into the compressor for a secondary circulation.

[0026] The present invention has the following beneficial effects:

[0027] 1. This invention uses refrigerant to pass through the fan blades, causing the fan blades to rotate and the inner ring to rotate synchronously. This causes the power magnet to rotate synchronously and continuously intersect with the evenly distributed top pressure blocks. When the power magnet approaches the top pressure block, it will repel the magnets with opposite magnetic properties on the top pressure block, causing the top pressure block to intermittently lift and squeeze the evenly distributed displacement protrusions. This causes the displacement protrusions to drive the outer ring seat to rotate, and the rolling rod to follow the rotation and crush the evaporator straight tube. Friction generates heat, and the frost on the outside of the evaporator straight tube is crushed, heated and removed.

[0028] 2. This invention uses a hot air balloon to absorb heat from a water tank to heat the gas inside. The heated gas then passes through a rolling rod to heat and melt the frost on the evaporator tube. The rolling rod's pressure ensures that the heat adheres tightly to the frost surface. After the frost loosens due to the heat, the rolling rod further presses it off, and the multi-sided structure of the rolling rod effectively peels off the loosened frost, reducing defrosting time.

[0029] 3. This invention utilizes the defrosting heating of the evaporator straight tube by the rolling rod and the frictional heat generated by the rolling rod to transfer heat to the low-temperature, low-pressure refrigerant inside the evaporator straight tube. This allows the refrigerant to absorb sufficient heat and vaporize. When the vaporized refrigerant flows through the evaporator bend, it heats and defrosts the frost in that area from the inside out, causing the frost to loosen and melt. Combined with the multi-sided rolling vibration of the rolling rod, the loosened frost on the evaporator straight tube and evaporator bend falls off, accelerating the defrosting process on the evaporator tube. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the evaporator straight tube of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the evaporation straight tube of the present invention;

[0033] Figure 4 This is a schematic diagram of the fixed block structure distribution of the present invention;

[0034] Figure 5 This is a schematic diagram of the inner ring structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the outer ring seat structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the rolling rod structure of the present invention;

[0037] Figure 8 This is a three-dimensional structural diagram of the fixing base of the present invention;

[0038] Figure 9 This is a schematic diagram of the internal structure of the outer ring seat of the present invention.

[0039] In the diagram: 1. Compressor; 2. Condenser; 3. Water tank; 4. Throttling device; 5. Evaporator straight tube; 501. Evaporator bend; 6. Connecting pipe; 7. Hot air balloon; 8. Gas distribution pipe; 9. Gas delivery pipe; 10. Transmission pipe; 11. Limiting plate; 12. Inner ring; 13. Center roller; 14. Fan blade; 15. Power magnet; 16. Fixed block; 17. Movable cavity; 18. Top pressure block; 19. Spring; 20. Outer ring seat; 201. Inlet cavity; 202. Flow cavity; 21. Empty slot; 22. Displacement protrusion; 23. Rotating rod; 24. Rolling rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1An air-source heat pump chiller / hot water unit includes a compressor 1, a condenser 2, a throttling device 4, an evaporator, and a connecting pipe 6 connecting the above structures. The output end of the compressor 1 is connected to the condenser 2 via the connecting pipe 6. The condenser 2 is connected to the throttling device 4 via the connecting pipe 6. The throttling device 4 is connected to the evaporator via the connecting pipe 6. The evaporator is connected to the input end of the compressor 1 via the connecting pipe 6. This allows the compressor 1 to compress a low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant, which is then input into the condenser 2 via the connecting pipe 6, thus cooling the water tank 3. The cold water is heated to raise its temperature, which in turn heats the gas inside the hot air balloon 7, causing the hot air balloon 7 to gradually expand, displacing the surrounding water and gradually filling the water tank 3. At this time, the high-temperature, high-pressure liquid refrigerant that has passed through the condenser 2 is converted into a low-temperature, high-pressure liquid refrigerant, which is then passed to the throttling device 4. Through the throttling of the throttling device 4, a low-temperature, low-pressure atomized refrigerant is formed and input into the evaporator. The evaporator absorbs heat from the outside and vaporizes into a low-temperature, low-pressure gaseous refrigerant, which is then passed back into the compressor 1 to complete one cycle.

[0042] See Figure 1 A water tank 3 is located on the outside of the condenser 2. The water tank 3 is filled with water, and a hot air balloon 7 is attached inside the water tank 3. The compressor 1 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant, which is then introduced into the condenser 2 through the connecting pipe 6. This heats the cold water in the water tank 3, raising its temperature, and also heats the gas inside the hot air balloon 7, causing the hot air balloon 7 to gradually expand, displacing the surrounding water and gradually filling the water tank 3. Two symmetrical gas distribution pipes 8 are located on both sides of the evaporator. The hot air balloon 7 is connected to the gas distribution pipes 8 through a gas delivery pipe 9. An electric control switch is installed on the gas delivery pipe 9. When defrosting is required, the gas delivery pipe 9 is opened by the electric control switch, allowing the heat in the hot air balloon 7 to be transferred through the gas in the gas delivery pipe 9, thus raising the temperature of the gas in the gas distribution pipes 8.

[0043] See Figures 1 to 5 The evaporator consists of evenly distributed straight evaporation tubes 5 and an evaporation bend 501 connecting two adjacent straight evaporation tubes 5. A central roller 13 is provided at the center of the straight evaporation tube 5. Symmetrical inner rings 12 are respectively sleeved at both ends of the central roller 13. Evenly distributed fan blades 14 are fixedly connected to the inner side wall of the inner ring 12, so that when the refrigerant flows through the fan blades 14, it can drive the fan blades 14 to rotate, thereby driving the inner ring 12 to rotate. A groove is opened on the inner side wall of the straight evaporation tube 5 to place the inner ring 12. The inner ring 12 is movably sleeved in the groove, so that the groove restricts the position of the inner ring 12, so that the inner ring 12 can only rotate. A power magnet 15 is fixedly sleeved on the inner ring 12, so that the inner ring 12 drives the power magnet 15 to rotate synchronously during the rotation, so that the power magnet 15 continuously intersects with different top pressure blocks 18, so that the different top pressure blocks 18 intermittently repel the power magnet 15 and rise.

[0044] See Figures 3 to 4 , Figure 8 Two sets of symmetrical fixing blocks 16 are fixedly connected to the outer side of the evaporator straight tube 5. Each set of fixing blocks 16 is evenly distributed on the outer wall of the evaporator straight tube 5. The center of one set of fixing blocks 16 coincides with the center of the inner ring 12. A movable cavity 17 is opened in the fixing block 16. A spring 19 is fixedly connected to the bottom end of the movable cavity 17. A top pressure block 18 is fixedly connected to the top end of the spring 19, so that the spring 19 cooperates with the movable cavity 17 to restrict the displacement of the top pressure block 18. When the top pressure block 18... 8 When moving linearly under repulsive force, the spring 19 can stretch and store energy, waiting for the power magnet 15 to rotate. The stretched spring 19 drives the top pressing block 18 to reset. The top pressing block 18 is provided with a magnet that repels the power magnet 15 at one end facing the inner ring 12. The edge of the top pressing block 18 away from the inner ring 12 has rounded corners, so that when the top pressing block 18 moves under repulsive force, the edge with rounded corners can press on the inclined edge of the displacement protrusion 22, pressing the displacement protrusion 22 to rotate.

[0045] See Figures 1 to 4 , Figure 6 Two symmetrical outer ring seats 20 are movably sleeved on the outer side of the evaporator straight tube 5. A slot 21 is provided on the inner side wall of the outer ring seat 20. The bottom of the slot 21 is fixedly connected with evenly distributed displacement protrusions 22. The center of the displacement protrusion 22 coincides with the center of the inner ring 12. The displacement protrusion 22 is provided with an inclined edge, which is opposite to the top of the top pressure block 18. The edge of the inclined edge is rounded so that when the top pressure block 18 moves under the mutual repulsion force, the rounded edge can press on the inclined edge of the displacement protrusion 22, pressing the displacement protrusion 22 to rotate, thereby driving the outer ring seat 20 to rotate synchronously.

[0046] The number of top pressing blocks 18 is even, and the number of displacement protrusions 22 in an outer ring seat 20 is odd. When one of the top pressing blocks 18 moves and presses the displacement protrusions 22 to rotate the outer ring seat 20, the positions of all the displacement protrusions 22 will change. At this time, the inclined edge of a new displacement protrusion 22 is always on the same straight line as the top of one of the top pressing blocks 18, so that there is always a top pressing block 18 that can apply pressure to the displacement protrusions 22 to complete the rotation of the outer ring seat 20.

[0047] See Figures 1 to 3 , Figure 7 , Figure 9Four evenly distributed rolling rods 24 are movably connected to the opposite ends of the two outer ring seats 20. Rotating rods 23 are provided at both ends of the rolling rods 24. The rotating rods 23 are movably sleeved inside the outer ring seats 20, allowing the outer ring seats 20 to restrict the rolling rods 24 via the rotating rods 23. This ensures that the rolling rods 24 can only perform rolling motion and follow the synchronous rotation of the outer ring seats 20. The rolling rods 24 are hexagonal prisms with rounded corners on their edges. The rolling rods 24 contact the outer wall of the evaporator straight tube 5. When the outer ring seats 20 drive the rolling rods 24 to rotate synchronously, the rolling rods 24 will rub against the outer wall of the evaporator straight tube 5, causing the rolling rods 24 to rotate. Different edges of the rolling rods 24 intermittently crush the outer wall of the evaporator straight tube 5, generating heat through friction for heat compensation, while simultaneously crushing and peeling off the frost. When the edges of the rolling rods 24 contact the evaporator straight tube 5, they will collide with it, causing the evaporator to vibrate and loosening the frost on the evaporator, causing it to fall off.

[0048] See Figure 1 , Figure 7 , Figure 9 The rolling rod 24 and the rotating rod 23 are hollow structures. The outer ring seat 20 has an annular air intake chamber 201 and an annular flow chamber 202. The air intake chamber 201 is connected to the rotating rod 23 through the flow chamber 202. The limiting plate 11 is movably sleeved in the air intake chamber 201. The end of the limiting plate 11 away from the flow chamber 202 is fixedly connected to the transmission pipe 10. The other end of the transmission pipe 10 is connected to the air distribution pipe 8, so that heat enters the rolling rod 24 through the transmission pipe 10, the air intake chamber 201 and the flow chamber 202, so that the rolling rod 24 is heated to complete the defrosting.

[0049] An operating method for an air source heat pump chiller / hot water unit:

[0050] S1. Compressor 1 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant, which is then input into condenser 2. Condenser 2 releases heat, causing the water in water tank 3 and hot air balloon 7 to absorb heat, thus opening the electrical control switch of hot air balloon 7.

[0051] S2. The refrigerant is atomized by the expansion valve 4 and enters the evaporator. It flows through the fan blade 14 and drives the inner ring 12 to rotate.

[0052] S3, the inner ring 12 drives the power magnet 15 to rotate, the power magnet applies a repulsive force to the top pressing block 18, the top pressing block 18 moves and squeezes the displacement protrusion 22, driving the outer ring seat 20 to rotate;

[0053] S4. The outer ring seat 20 drives the rolling rod 24 to rotate. The rolling rod 24 crushes and vibrates the evaporation straight tube 5. The hot air balloon inputs heat into the rolling rod 24, which heats up the rolling rod 24 and melts the frost on the evaporation straight tube 5.

[0054] S5. The refrigerant in the evaporator absorbs heat to melt the frost at the evaporator bend 501.

[0055] S6, the refrigerant flows back into compressor 1 for a secondary circulation.

[0056] The method of using (working principle) of this invention is as follows:

[0057] First, compressor 1 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant, which is then introduced into condenser 2 through connecting pipe 6. This heats the cold water in water tank 3, raising its temperature, and also heats the gas inside hot air balloon 7, causing it to gradually expand, displacing the surrounding water and filling water tank 3. At this point, the high-temperature, high-pressure liquid refrigerant from condenser 2 is transformed into a low-temperature, high-pressure liquid refrigerant, which then flows to throttle valve 4. Through throttling by throttle valve 4, it forms a low-temperature, low-pressure atomized refrigerant, which is then introduced into evaporator. The evaporator absorbs heat from the outside and vaporizes into a low-temperature, low-pressure gaseous refrigerant. During this process, the refrigerant flows through fan blades 14, causing fan blades 14 to rotate under the influence of the refrigerant, which in turn rotates the drive magnet 15. When the drive magnet 15 approaches its... When one of the top pressure blocks 18 is in the middle, the magnet at the bottom of the top pressure block 18 will repel the power magnet 15, causing the top pressure block 18 to move towards the outer ring seat 20, stretching the spring 19, and pressing the top pressure block 18 against the inclined side of the nearby displacement protrusion 22. Pressing the displacement protrusion 22 will drive the outer ring seat 20 to rotate to one side, causing the rolling rod 24 to rotate synchronously with the outer ring seat 20, so that the rolling rod 24 rolls on the evaporator straight tube 5. During the rolling process, the rolling rod 24 rolls by contacting the evaporator straight tube 5 through the inclined side. The multiple surfaces of the rolling rod 24 continuously hit the evaporator straight tube 5 during rolling. When the multiple surfaces of the rolling rod 24 continuously and cyclically press against the evaporator straight tube 5, they will impact the evaporator straight tube 5, causing the evaporator to vibrate. Then, the low-temperature and low-pressure vaporized refrigerant will be reintroduced into the compressor 1 for another cycle.

[0058] Then, when frost begins to form on the evaporator and defrosting is required, the electrical control switch of the hot air balloon 7 is turned on, allowing the hot airflow in the hot air balloon 7 to mix with the cold airflow in the connected pipe, completing the heating process. The heat is then introduced into the air inlet chamber 201 through the gas distribution pipe 8 and the transmission pipe 10, and then into the rotating rod 23 through the flow chamber 202, and then into the rolling rod 24, causing the rolling rod 24 to heat up. As the rolling rod 24 rolls, it crushes and breaks up the frost on the evaporator straight tube 5, and heats and melts the frost. Furthermore, as the edge of the rolling rod 24 presses against the evaporator straight tube 5, it scrapes and peels off the surrounding frost. When the frost on the evaporator straight tube 5 melts and loosens, the rolling, crushing, and vibrating action of the rolling rod 24 causes the loosened frost on the evaporator straight tube 5 to fall off. Finally, the temperature of the rolling rod 24 is further atomized by the low-temperature, low-pressure refrigerant through the evaporator straight tube 5. The refrigerant is absorbed and vaporized. When the vaporized low-temperature, low-pressure refrigerant passes through the evaporator bend 501, it heats the frost at this point, causing the frost to melt and loosen from the inside out. Combined with the vibration of the rolling rod 24, the loosened frost at the evaporator bend 501 also falls off quickly. At this time, part of the vaporized refrigerant at the evaporator bend 501 will be converted back into low-temperature, low-pressure atomized refrigerant. When it is introduced into the new evaporator straight pipe 5 again, it will absorb heat and vaporize again, and finally be introduced into the compressor 1 again. During this process, the hot air balloon 7 is constantly deformed in the convection of water, and heat is continuously input into the rolling rod 24 through the air distribution pipe 8 for continuous defrosting. During this process, the compressor 1 continues to run, the temperature in the water tank 3 is relatively reduced, the hot air balloon 7 is gradually compressed, the water level in the water tank 3 drops, reducing the contact area with the water tank 3 and reducing the heat dissipation of the water at this time.

[0059] Finally, once defrosting is complete, turn off the switch for hot air balloon 7.

Claims

1. An air source heat pump chiller heater water chiller unit, characterized in that: It comprises a compressor (1) for compressing refrigerant, a condenser (2) for heat transfer, a throttling device (4) for throttling refrigerant, an evaporator for heat absorption, a communication pipe (6) for connecting the compressor (1), the condenser (2), the throttling device (4) and the evaporator; The outer side of the condenser (2) is provided with a water tank (3) filled with water for absorbing the heat of the condenser (2); The water tank (3) is provided with a hot air device for transmitting sufficient heat for melting frost; The evaporator is provided with a rolling device for rolling defrosting, and the rolling device is connected with the hot air device for completing hot air defrosting; The evaporator is provided with a transmission device for driving the rolling device to roll; The rolling device comprises two symmetrical outer ring seats (20) outside the evaporation straight pipe (5), the inner side wall of the outer ring seat (20) is provided with a hollow groove (21), the groove bottom of the hollow groove (21) is fixedly connected with uniformly distributed displacement protrusions (22) for cooperating with the transmission device to rotate the outer ring seat (20), four uniformly distributed rolling rods (24) are movably connected at the opposite ends of the two outer ring seats (20) for rolling contact with the outer side of the evaporation straight pipe (5), and the two ends of the rolling rod (24) are provided with rotating rods (23) movably sleeved in the outer ring seat (20) for limiting the position of the rolling rod (24); The rolling rod (24) is in a hexagonal column shape for impacting and rolling the evaporation straight pipe (5) in rolling, and the edges of the rolling rod (24) are chamfered, and the rolling rod (24) contacts with the outer side wall of the evaporation straight pipe (5); The rolling rod (24) and the rotating rod (23) are in a hollow structure, the outer ring seat (20) is provided with a ring-shaped air inlet cavity (201) and a ring-shaped flow cavity (202), the air inlet cavity (201) is connected with the rotating rod (23) through the flow cavity (202), the air inlet cavity (201) movably sleeves a limiting disc (11) to prevent the gas in the air inlet cavity (201) from leaking in the rotation of the outer ring seat (20), and one end of the limiting disc (11) away from the flow cavity (202) is connected with one end of a transmission pipe (10) for inputting hot air into the outer ring seat (20) and the rolling rod (24); The temperature of the rolling rod (24) is absorbed by the atomized refrigerant with low temperature and low pressure through the evaporation straight pipe (5) to make it gasify, when the gasified low-temperature and low-pressure refrigerant passes through the evaporation elbow pipe (501), the frost at this position is heated to melt and loosen from inside to outside, and the loosened frost at the evaporation elbow pipe (501) is also quickly removed by the vibration of the rolling rod (24).

2. An air source heat pump chiller-heater unit as set forth in claim 1, wherein: The hot air device comprises a hot air ball (7) arranged in a water tank (3), the hot air ball (7) is filled with gas for absorbing heat in water, two symmetrical air distribution pipes (8) are arranged on two sides of the evaporator respectively, the hot air ball (7) is connected with the air distribution pipe (8) through a gas conveying pipe (9), the air distribution pipe (8) is fixedly connected with uniformly distributed conveying pipes (10), one end of the conveying pipe (10) is connected with a rolling device for inputting hot air to the rolling device, and the gas conveying pipe (9) is provided with an electric control switch for controlling the opening and closing of the heat transfer of the hot air ball (7).

3. An air source heat pump chiller-heater unit as set forth in claim 1, wherein: The evaporator comprises straight evaporation straight pipes (5) and evaporation elbow pipes (501) connecting adjacent two evaporation straight pipes (5).

4. An air source heat pump chiller-heater unit as set forth in claim 2, wherein: The transmission device comprises a center roller (13) arranged in the center of the evaporation straight pipe (5), symmetrical inner rings (12) are sleeved on two ends of the center roller (13), the inner side wall of the inner ring (12) is fixedly connected with uniformly distributed fan blades (14) for receiving the power of flowing refrigerant, the outer side of the evaporation straight pipe (5) is fixedly connected with two groups of symmetrical fixed blocks (16), the fixed block (16) is movably sleeved with a top pressing block (18), the fixed block (16) is provided with a movable cavity (17), the bottom end of the movable cavity (17) is fixedly connected with a spring (19), the top end of the spring (19) is fixedly connected with the bottom end of the top pressing block (18) for limiting the position of the top pressing block (18), the inner ring (12) is fixedly sleeved with a power magnet (15), one end of the top pressing block (18) opposite to the inner ring (12) is provided with a magnet repelling the power magnet (15), the center of the top pressing block (18) and the center of the power magnet (15) are coincident for receiving the repulsive force provided by the power magnet (15).

5. An air source heat pump chiller-heater unit as set forth in claim 4, wherein: The inner side wall of the evaporation straight pipe (5) is provided with a groove for placing the inner ring (12), and the inner ring (12) is movably sleeved in the groove for limiting the rotation of the inner ring (12).

6. An air source heat pump chiller-heater unit as set forth in claim 4, wherein: The end of the top pressing block (18) away from the inner ring (12) is chamfered, the center of the displacement protrusion (22) is coincident with the center of the inner ring (12), the displacement protrusion (22) is provided with an inclined edge opposite to the top end of the top pressing block (18) for receiving the power of the lifting action of the top pressing block (18).

7. A method of operating an air source heat pump chiller-heat pump water heating unit as claimed in claim 4, characterized by, The method comprises the following steps: S1, the compressor (1) compresses low-temperature and low-pressure gas refrigerant into high-temperature and high-pressure liquid refrigerant input into the condenser (2), the condenser (2) releases heat to make the water in the water tank (3) and the hot air ball (7) absorb heat, and the electric control switch of the hot air ball (7) is opened; S2, the refrigerant is atomized into the evaporator through the throttling device (4), flows through the fan blades (14), and drives the inner ring (12) to rotate; S3, the inner ring (12) drives the power magnet (15) to rotate, the power magnet applies repulsive force to the top pressing block (18), the top pressing block (18) moves to press the displacement protrusion (22), and drives the outer ring seat (20) to rotate; S4, the outer ring seat (20) drives the rolling bar (24) to rotate, the rolling bar (24) rolls and presses the shock evaporation straight pipe (5), the hot air balloon inputs heat into the rolling bar (24), so that the rolling bar (24) is heated, and the frost on the evaporation straight pipe (5) is heated and melted; S5, the refrigerant in the evaporator absorbs heat, and the frost at the evaporation bend pipe (501) is heated and melted; S6, the refrigerant flows into the compressor (1) again for secondary circulation.

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