Screw air-cooled heat pump unit

Abstract

The utility model discloses a screw -type air -cooled heat pump unit relates to air conditioning heat pump unit technical field, and the utility model discloses a rack is equipped with the heat pump unit at the bottom of rack, the upper end of rack is equipped with condenser, the top of rack is located the top of condenser fixed installation is equipped with the ventilation pipe of corresponding setting, the fan is installed in the ventilation pipe, the top of ventilation pipe is equipped with the dust frame, the dust screen is fixedly equipped in the dust frame, the dust screen middle end is set up slightly convex, the outer wall middle end of ventilation pipe is equipped with the movable plate, drive motor drives transmission shaft, worm, worm wheel no.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioning heat pump units, specifically a screw-type air-cooled heat pump unit. Background Technology

[0002] Screw-type air-cooled heat pump units are based on the reverse Carnot cycle principle, using air as the cold (heat) source and water as the refrigerant to achieve a cooling (heating) cycle. In cooling mode, the compressor compresses the refrigerant into a high-temperature, high-pressure gas, which enters the condenser to dissipate heat and becomes a liquid. After being depressurized by a throttling device, it enters the evaporator, where it absorbs heat and evaporates into a gas, thereby lowering the temperature of the chilled water and providing cooling for the user. In heating mode, a four-way reversing valve changes the direction of the refrigerant flow, making the outdoor unit an evaporator to absorb heat from the air, and the indoor unit a condenser to release heat into the room, thus achieving the heating function.

[0003] When the unit is in the refrigeration cycle, the fan installed on the top of the unit is mainly responsible for dissipating heat from the condenser and quickly expelling hot air to ensure that the refrigerant can complete the condensation process smoothly. During the operation of the fan, a dust filter needs to be installed to prevent impurities from falling from the top into the interior below. However, since the dust filter is stationary during use, impurities will quickly accumulate on the surface. This will cause turbulence when the airflow passes through the clogged dust filter, resulting in a series of problems such as increased noise. Therefore, regular maintenance and cleaning are required. However, because the unit is stationary, the process of impurity accumulation and blockage will be accelerated. Therefore, the maintenance time needs to be shortened, resulting in an increase in the frequency of maintenance visits. Utility Model Content

[0004] In order to solve the above problems, the purpose of this utility model is to provide a screw-type air-cooled heat pump unit.

[0005] To solve the above technical problems, this utility model adopts the following technical solution: a screw-type air-cooled heat pump unit, including a frame, a heat pump unit installed at the bottom of the frame, a condenser installed at the upper end of the frame, a corresponding ventilation duct fixedly installed at the top of the frame above the condenser, a fan installed inside the ventilation duct, a dustproof frame provided at the top of the ventilation duct, a dustproof net fixedly installed inside the dustproof frame, the dustproof net having a slightly protruding middle end, a movable plate sleeved on the middle end of the outer wall of the ventilation duct, and a connection between the dustproof frame and the movable plate. The assembly includes two symmetrically arranged second fixed plates fixed to the outer wall of the movable plate. A fixed rod is fixed to the lower surface of the second fixed plate. A long plate is fixed to the top of the frame below the second fixed plates. The fixed rod is inserted through the long plate and fixed to a top plate. A connecting shaft is rotatably arranged inside the long plate below the top plate. A cam is arranged on the connecting shaft directly below each top plate. The top of the cam abuts against the lower surface of the top plate. A second spring is sleeved on the fixed plate between the top plate and the inner wall of the long plate. A transmission assembly is provided between the connecting shafts arranged in the multiple long plates.

[0006] Preferably, the connecting assembly includes a connecting rod, which is generally U-shaped with one end fixed to the dustproof frame. The end of the connecting rod away from the dustproof frame has an insertion hole and is inserted into a movable plate. A first fixed plate is fixedly arranged in a cross shape with the second fixed plate on the upper surface of the movable plate. A movable block is movably provided inside the first fixed plate. An insertion rod is fixedly provided at the middle end of the movable block. The insertion rod can pass through the first fixed plate and be inserted into the insertion hole on the connecting rod. A first spring is fixedly provided at the end of the first fixed plate away from the movable plate. The other end of the first spring is fixedly provided on the movable block. The end of the insertion rod away from the movable plate passes through the first fixed plate.

[0007] Preferably, a protective cover is fixedly provided at the top of the frame at the ends of multiple connecting shafts, and the ends of the multiple connecting shafts are rotatably inserted into the protective cover. A transmission shaft is rotatably provided below the protective cover, and multiple worm gears corresponding to the connecting shafts are fixedly provided on the transmission shaft. A worm wheel that meshes with and is connected to the worm gears is fixedly provided at the end of the connecting shaft.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. The drive motor drives the transmission shaft, worm gear, worm wheel and other components to make the cam rotate continuously, which drives the movable plate and dustproof frame to shake up and down. Together with the slightly raised dustproof net in the middle, it promotes the movement of intercepted impurities to the edge, delays the accumulation and blockage of the dustproof net in the middle area, ensures normal airflow, extends the service life of the dustproof net and reduces the number of maintenance times for staff.

[0010] 2. Through the structural design of the insertion rod, moving block, connecting rod and insertion hole, the staff only needs to pull the insertion rod to disengage the end of the insertion rod from the insertion hole of the connecting rod to easily pull the dustproof frame and dustproof net out of the ventilation duct, simplifying the disassembly process, improving operating efficiency, and facilitating the regular replacement of the dustproof net. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the ventilation duct structure of this utility model.

[0014] Figure 3 This is a side view of the ventilation duct structure of this utility model.

[0015] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0017] Figure 6 This utility model Figure 4 Enlarged structural diagram at point C.

[0018] In the diagram: 1. Frame; 11. Heat pump unit; 12. Condenser; 13. Ventilation duct; 14. Fan; 2. Dustproof frame; 21. Dustproof net; 22. Connecting rod; 23. Insertion hole; 24. Movable plate; 25. First fixed plate; 26. Moving block; 27. Insertion rod; 28. First spring; 3. Second fixed plate; 31. Fixed rod; 32. Long plate; 33. Top plate; 34. Second spring; 35. Cam; 36. Connecting shaft; 4. Protective cover; 41. Drive shaft; 42. Worm gear; 43. Worm wheel; 44. Drive motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-6 As shown, this utility model provides a screw-type air-cooled heat pump unit, including a frame 1. A heat pump unit 11 is installed at the bottom of the frame 1. The heat pump unit 11 consists of a throttling valve, an evaporator, and a screw compressor. A condenser 12 is installed at the upper end of the frame 1. A corresponding ventilation pipe 13 is fixedly installed above the condenser 12 at the top of the frame 1. A fan 14 is installed inside the ventilation pipe 13. A dustproof frame 2 is provided at the top of the ventilation pipe 13. A dustproof net 21 is fixedly installed inside the dustproof frame 2. A movable plate 24 is fitted at the middle end of the outer wall of the ventilation pipe 13. A connecting component is provided between the dustproof frame 2 and the movable plate 24. Two symmetrically arranged second fixing plates 3 are fixedly provided on the outer wall of the frame 24. A fixing rod 31 is fixedly provided on the lower surface of the second fixing plate 3. A long plate 32 is fixedly provided on the top of the frame 1 below the second fixing plate 3. The fixing rod 31 is inserted through the long plate 32 and a top plate 33 is fixedly provided. A connecting shaft 36 is rotatably provided in the long plate 32 below the top plate 33. A cam 35 is provided on the connecting shaft 36 directly below each top plate 33. The top of the cam 35 abuts against the lower surface of the top plate 33. A second spring 34 is sleeved on the fixing plate between the top plate 33 and the inner wall of the long plate 32. A transmission assembly is provided between the connecting shafts 36 provided in the multiple long plates 32.

[0021] The dustproof net 21 has a slight bulge in the middle. This design, combined with the up-and-down shaking it receives, allows impurities intercepted by the dustproof net 21 to be vibrated and moved to the edge of the dustproof net 21 as much as possible. This delays the accumulation and blockage of the dustproof net 21 in the middle area, ensuring normal airflow.

[0022] The connecting assembly includes a connecting rod 22, which is generally U-shaped. One end of the connecting rod 22 is fixed to the dustproof frame 2. The end of the connecting rod 22 away from the dustproof frame 2 has an insertion hole 23 and is inserted into the movable plate 24. The upper surface of the movable plate 24 is fixedly provided with a first fixed plate 25 arranged in a cross shape with the second fixed plate 3. A movable block 26 is movably provided inside the first fixed plate 25. An insertion rod 27 is fixedly provided at the middle end of the movable block 26. The insertion rod 27 can pass through the first fixed plate 25 and be inserted into the insertion hole 23 on the connecting rod 22. A first spring 28 is fixedly provided at the end of the first fixed plate 25 away from the movable plate 24. The other end of the first spring 28 is fixedly provided to the movable block 26. The end of the insertion rod 27 away from the movable plate 24 passes through the first fixed plate 25. The first spring 28 will stably push the movable block 26 to drive the insertion rod 27 to be inserted into the insertion hole 23 on the connecting rod 22, so that the dustproof frame 2 and the movable plate 24 are stably fixedly connected.

[0023] A protective cover 4 is fixedly installed at the top of the frame 1 at the ends of multiple connecting shafts 36. The ends of the multiple connecting shafts 36 are rotatably inserted into the protective cover 4. A transmission shaft 41 is rotatably installed below the protective cover 4. Multiple worm gears 42 corresponding to the connecting shafts 36 are fixedly installed on the transmission shaft 41. Worm wheels 43 that mesh with the worm gears 42 are fixedly installed at the ends of the connecting shafts 36. By installing multiple sets of worm wheels 43 and worm gears 42 on the transmission shaft 41, multiple connecting shafts 36 can be driven simultaneously, improving the linkage of the device.

[0024] A drive motor 44 is fixedly installed on the top of the frame 1 near the end of the drive shaft 41. The output end of the drive motor 44 is coaxially fixed on the drive shaft 41. The drive motor 44 mainly provides power for the rotation of the drive shaft 41, making it convenient for operators to operate.

[0025] Working principle: During use, the dustproof net 21 installed on the top of the ventilation duct 13 will continuously protect the fan 14 from dust. During this process, the drive motor 44 can drive the transmission shaft 41 to rotate. The worm gear 42 fixed on the transmission shaft 41 will drive the worm wheel 43 connecting shaft 36 to rotate. At this time, the connecting shaft 36 will continuously drive the cam 35 to rotate. The cam 35 will continuously push the top plate 33 upward. At this time, the top plate 33 will drive the top fixed rod 31 and the second fixed plate 3 to move upward as a whole. As the cam 35 rotates to the bottom, the second spring 34 sleeved on the fixed rod 31 will push the top plate 34 upward. The moving top plate 33 moves downward, thereby causing the entire movable plate 24 to move downward. Through the continuous rotation of the cam 35, the movable plate 24 will be driven to shake up and down continuously. The dustproof frame 2 connected to the movable plate 24 will also be driven to shake up and down. At the same time, due to the slightly protruding middle end of the dustproof net 21, the impurities intercepted by the dustproof net 21 can be moved to the edge of the dustproof net 21 as much as possible by the vibration. Thus, the dustproof net 21 in the middle range can delay the accumulation and blockage, ensure normal airflow, extend the service life of the dustproof net 21, and reduce the frequency of maintenance by the staff.

[0026] When subsequent staff come to perform regular maintenance and need to disassemble and replace the dustproof net 21, the staff only needs to pull the insertion rod 27 located outside the first fixed plate 25. At this time, the insertion rod 27 will drive the moving block 26 and cause the end to disengage from the insertion hole 23 on the connecting rod 22. At this time, the connecting rod 22 is only inserted into the movable plate 24 and is not fixed. Subsequently, the staff only needs to pull the connecting rod 22 to drive the dustproof frame 2 and the dustproof net 21 to completely detach from the ventilation pipe 13, which makes it convenient for the staff to disassemble them and greatly improves the operation efficiency.

[0027] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A screw-type air-cooled heat pump unit, comprising a frame (1), characterized in that: A heat pump unit (11) is installed at the bottom of the frame (1), a condenser (12) is installed at the top of the frame (1), and a corresponding ventilation pipe (13) is fixedly installed above the condenser (12) at the top of the frame (1). A fan (14) is installed inside the ventilation pipe (13), a dustproof frame (2) is provided at the top of the ventilation pipe (13), and a dustproof net (21) is fixedly installed inside the dustproof frame (2). A movable plate (24) is fitted at the middle end of the outer wall of the ventilation pipe (13), and a connecting component is provided between the dustproof frame (2) and the movable plate (24). Two symmetrically arranged second fixing plates (3) are fixedly installed on the outer wall of the movable plate (24). A fixing rod (31) is fixedly provided on the lower surface of the plate (3). A long plate (32) is fixedly provided on the top of the frame (1) below the second fixing plate (3). The fixing rod (31) is inserted through the long plate (32) and a top plate (33) is fixedly provided. A connecting shaft (36) is rotatably provided in the long plate (32) below the top plate (33). A cam (35) is provided on the connecting shaft (36) directly below each top plate (33). The top of the cam (35) abuts against the lower surface of the top plate (33). A second spring (34) is sleeved on the fixing plate between the top plate (33) and the inner wall of the long plate (32). A transmission assembly is provided between the connecting shafts (36) provided in the multiple long plates (32).

2. The screw-type air-cooled heat pump unit as described in claim 1, characterized in that, The dustproof net (21) has a slight protrusion at the middle end.

3. A screw-type air-cooled heat pump unit as described in claim 2, characterized in that, The connecting assembly includes a connecting rod (22), which is in the shape of an inverted U and has one end fixed on the dustproof frame (2). The end of the connecting rod (22) away from the dustproof frame (2) has a socket (23) and the end is inserted into the movable plate (24). The upper surface of the movable plate (24) is fixedly provided with a first fixed plate (25) arranged in a cross shape with the second fixed plate (3). The first fixed plate (25) has a movable block (26) inside it. The middle end of the movable block (26) is fixedly provided with a plug (27). The plug (27) can pass through the first fixed plate (25) and be inserted into the socket (23) on the connecting rod (22).

4. A screw-type air-cooled heat pump unit as described in claim 3, characterized in that, A first spring (28) is fixedly provided at one end of the first fixed plate (25) away from the movable plate (24), and the other end of the first spring (28) is fixedly provided on the movable block (26). The end of the insertion rod (27) away from the movable plate (24) passes through the first fixed plate (25).

5. A screw-type air-cooled heat pump unit as described in claim 4, characterized in that, The top of the frame (1) is fixedly provided with a protective cover (4) at the end of multiple connecting shafts (36). The ends of the multiple connecting shafts (36) are rotatably inserted into the protective cover (4). A transmission shaft (41) is rotatably provided below the protective cover (4). Multiple worm gears (42) corresponding to the connecting shafts (36) are fixedly provided on the transmission shaft (41). A worm wheel (43) that meshes with the worm gears (42) is fixedly provided at the end of the connecting shaft (36).

6. A screw-type air-cooled heat pump unit as described in claim 5, characterized in that, A drive motor (44) is fixedly mounted on the top of the frame (1) near the end of the drive shaft (41), and the output end of the drive motor (44) is coaxially fixed on the drive shaft (41).

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