Air source heat pump dehumidification and drying device and method

Abstract

The present invention discloses an air source heat pump dehumidification and drying device and method, which belongs to the technical field of drying devices, and includes a drying box, wherein a placement area and two drying areas are respectively provided on both sides of the drying box, a plurality of trigger adjustment components are provided inside the drying area, and a heat pump component, a heat exchange component and a switching component are respectively provided inside the placement area. In the present invention, a staff member manually operates the handle to drive the screw to rotate inside the rectangular seat to adjust the height of the bottom plate, and squeezes the spring through the bottom plate to adjust the spring's service stiffness and initial preload, so that the spring is adapted to the triggering requirements of materials of different weights. The device can set different trigger thresholds according to different material properties, and maximize the latent heat recovery capacity of the evaporator by matching the optimal humidity switching point of the material.

Description

Technical Field

[0001] The present invention belongs to the technical field of drying devices, and in particular relates to an air source heat pump dehumidification and drying device and method. Background Art

[0002] The air source heat pump dehumidification and drying device is a device that uses air source heat pump technology for dehumidification and drying. Its working principle is to use the air source heat pump system to pass the humid air in the room through the evaporator to absorb heat and condense into water, and then evaporate the water through the compressor and discharge it to the outside, thereby achieving the effect of dehumidification and drying.

[0003] For example, the air-energy heat pump agricultural product dryer disclosed in Chinese patent document (CN114001537B) comprises: a housing with an opening at the top, a drying box with an open top disposed on one side of the housing; a heat exchange unit disposed within the housing and including a condenser, with the condenser embedded in the sidewalls of the drying box; a drying rotary unit comprising a rotating shaft, a drying box, a mesh cover, and a reduction power assembly, wherein the drying box is evenly provided with through holes, the mesh cover is clamped onto the drying box, and rotating shafts are fixed to the left and right ends of the drying box, respectively, and the two rotating shafts are rotatably connected to the ends of the drying box, with one end of the rotating shaft connected to the reduction power assembly; and a dehumidification unit, which is mounted within the housing and connected to the drying box and can perform drying in a heat pump manner, thereby avoiding excessive drying temperatures, ensuring uniform drying, and promptly discharging moisture, thereby accelerating drying speed and ensuring drying quality. However, during use, the dried humidified gas is directly discharged, resulting in the loss of most of the heat in the gas, which affects the initial drying efficiency and overall energy utilization of the device. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to propose an air source heat pump dehumidification and drying device and method in order to solve the problem in the prior art that the dried humid gas is directly discharged during use, resulting in the loss of most of the heat in the gas, which affects the initial drying efficiency and overall energy utilization of the device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An air source heat pump dehumidification and drying device includes a drying box, wherein a storage area and two drying areas are respectively provided on both sides of the drying box, a plurality of trigger adjustment components are provided in the drying area, and a heat pump component, a heat exchange component and a switching component are respectively provided in the storage area;

[0007] The trigger adjustment assembly includes two rectangular seats, the bottom side of the rectangular seat is slidably connected to a bottom plate, the top of the bottom plate is fixedly connected to a plurality of springs, the top of the spring is fixedly connected to a top plate, trigger buttons are provided on both sides of the top of the top plate, the top of the top plate is fixedly connected to a sliding block, the top of the sliding block extends to the outside of the rectangular seat and is fixedly connected to a placement seat, and the movement of the bottom plate adjusts the initial stiffness of the spring to be suitable for humidity triggering of different materials.

[0008] As a further description of the above technical solution:

[0009] The two rectangular seats are fixedly connected to the inner wall of the drying box on opposite sides, and the top plate and the sliding block are slidably connected to the inside of the rectangular seat. An embedding groove is provided on the top side of the top plate, and a trigger button is provided inside the embedding groove. A screw is provided at the bottom of the bottom plate, and the screw is transmission-connected to the inside of the rectangular seat, and one end of the screw extends away from the bottom plate to the outside of the rectangular seat and is fixedly connected to a rotating handle. A sealed door is provided on one side of the drying box.

[0010] As a further description of the above technical solution:

[0011] The heat pump assembly includes an evaporator shell, a mounting box is fixedly connected to one side of the evaporator shell, the mounting box and the bottom of the evaporator shell are fixedly connected to the inner wall of the drying box, a plurality of evaporation straight pipes and evaporation bent pipes are arranged inside the evaporator shell, a connecting frame is provided on the outer peripheral side of the evaporation bent pipe, and the connecting frame is fixedly connected to the inner wall of the evaporator shell away from the side of the evaporation bent pipe, the evaporation straight pipe is rotatably connected between two relative evaporation bent pipes through an adapter sealing head, and the evaporation straight pipe and the evaporation bent pipe are distributed in an S shape, one end of the evaporation bent pipe extends to the outside of the evaporator shell and is connected to a compressor, the other end of the compressor is connected to a condensing unit through a delivery pipe, and the bottom of the condensing unit is fixedly connected to the top of the mounting box.

[0012] As a further description of the above technical solution:

[0013] A heat exchange pipe is provided inside the installation box, and the heat exchange pipe is arranged in a spiral shape. One end of the heat exchange pipe is connected to the condensing unit through a circulation pump, and the other end of the heat exchange pipe is connected to the bottom of the condensing unit. The condensing unit is connected to a connecting pipe away from one end of the delivery pipe, and the other end of the connecting pipe is provided with a delivery unit and an expansion valve. The bottom end of the expansion valve is connected to the evaporation elbow through a connecting pipe. A fan is provided on one side of the installation box, and the other side of the installation box is connected to the bottom of the drying area through an air supply pipe.

[0014] As a further description of the above technical solution:

[0015] The heat exchange assembly includes a connecting box, one side of which is fixedly connected to the outer wall of the evaporator shell, and a rectangular box is fixedly connected to the center of the connecting box. The rectangular box is connected to the connecting pipe through the water inlet pipe, and the rectangular box is connected to the conveying unit through the water outlet pipe.

[0016] As a further description of the above technical solution:

[0017] An oblique blade is provided inside the rectangular box, and a rotating shaft is fixedly connected to the inside of the oblique blade. The rotating shaft is rotatably connected to the inside of the rectangular box. One end of the rotating shaft extends to the outer wall of the rectangular box and is fixedly connected to a reciprocating screw. The outer peripheral side of the reciprocating screw is transmission-connected to a screw seat. One side of the screw seat is fixedly connected to a first rack, and the other end of the first rack extends to the inside of the evaporator shell, and the first rack is slidably connected to the connecting box, the rectangular box and the inside of the evaporator shell. One side of the first rack is meshed with multiple first gears, and the first gear is fixedly connected to the outer peripheral side of the evaporation straight pipe.

[0018] As a further description of the above technical solution:

[0019] The switching assembly includes a fixed box, one side of which is fixedly connected to the outer wall of the evaporator shell, and a first rectangular through hole is provided inside the fixed box and the evaporator shell. An air inlet unit is provided on the side of the fixed box away from the evaporator shell, one side of the air inlet unit is fixedly connected to the outer wall of the drying box, and a second rectangular through hole is provided inside the drying box. The first rectangular through hole and the second rectangular through hole are on the same axis.

[0020] As a further description of the above technical solution:

[0021] A rectangular frame is fixedly connected to the center of the fixed box, and the rectangular frame is arranged on the outer periphery of the first rectangular through hole. A plurality of heat exchange fins are arranged on the outer periphery of the rectangular frame. A guide plate is fixedly connected to the top of the rectangular frame, and a recovery pipe is arranged above the guide plate. The recovery pipe is connected to the top of the fixed box, and the top of the recovery pipe is connected to the top of the drying area.

[0022] As a further description of the above technical solution:

[0023] An intermediate frame is fixedly connected to the center of the rectangular frame, a second rack is provided on one side of the intermediate frame, an electric push rod is fixedly connected to the top of the second rack, and the electric push rod is arranged inside the fixed box, a plurality of second gears are meshed and connected on one side of the second rack, a rotating shaft is fixedly connected inside the second gear, both ends of the rotating shaft extend to the inside of the first rectangular through hole, and the rotating shaft is rotatably connected to the inside of the rectangular frame and the intermediate frame, a closed blade is sleeved on the outer circumference of the rotating shaft, and the closed blade is arranged inside the first rectangular through hole, an intermediate pipe is provided on one side of the rectangular frame, the intermediate pipe is connected to the fixed box and the first through hole, and a pressure switch valve and a flow valve are provided inside the intermediate pipe, an exhaust pipe is connected to the bottom of the fixed box, and a switch valve is provided on the exhaust pipe.

[0024] An air source heat pump dehumidification and drying method comprises the following steps:

[0025] S1. First, place the device in a suitable place, then place the material to be dried on the placement seat, and close the sealed door on the drying box. At this time, the material to be dried on the placement seat will squeeze the spring through the sliding block and the top plate, causing the trigger button on the top plate to move away from the rectangular seat;

[0026] S2. The staff manually operates the handle to rotate the screw to adjust the height of the base plate to adjust the stiffness and initial preload of the spring;

[0027] S3. The evaporating straight pipe and the evaporating elbow absorb heat from the outside air inside the air inlet unit and transfer the heat to the refrigerant inside. The compressor compresses the low-temperature refrigerant in the evaporating straight pipe and the evaporating elbow into high-temperature and high-pressure gas, and transports the high-temperature and high-pressure gas to the condensing unit. The circulating pump exchanges heat between the liquid in the heat exchange pipe and the high-temperature and high-pressure gas. The fan then transports the heat to the drying area through the air supply pipe to dry the material inside the placement seat.

[0028] S4. At the same time, the low-temperature gas after the condensing unit is transported to the interior of the evaporation elbow through the connecting pipe, the connecting box, the rectangular box transport unit, and the expansion valve. As the gas is transported, it drives the oblique blades, the rotating shaft, and the reciprocating screw to rotate, causing the screw seat to drive the first rack to move, and the first gear to drive the evaporation straight pipe to rotate;

[0029] S5. The moist hot gas dried in the drying area is transported to the interior of the fixed box through the recovery pipe. The guide plate diverts the gas to both sides of the interior of the fixed box, and after heat exchange with the heat exchange fins, it is discharged through the exhaust pipe, heating the fresh air inside the rectangular frame and the first rectangular through-hole.

[0030] S6. As the material is dried, its weight will become smaller and smaller. At this time, the spring will drive the top plate, the sliding block and the placement seat to move upward. During the upward movement of the top plate, the trigger button will contact the inner wall of the rectangular seat. The trigger button will transmit the signal to the external controller. The external controller will drive the electric push rod to move the second rack downward, and the second gear will drive the rotating shaft and the closing blade to rotate. The closing blade will close the first rectangular through hole. At this time, the switch valve on the exhaust pipe is in the closed state, and the heat gas in the recovery pipe is transported from the middle pipe to the inside of the evaporator shell. The evaporator absorbs the latent heat in the humid air.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] 1. In the present invention, through the trigger adjustment component, the staff manually operates the handle to drive the screw to rotate inside the rectangular seat to adjust the height of the base plate, and squeezes the spring through the base plate to adjust the spring's service stiffness and initial preload force, so that the spring can adapt to the triggering requirements of materials of different weights. This device can set different trigger thresholds according to different material properties, and maximize the latent heat recovery capacity of the evaporator by matching the optimal humidity switching point of the material.

[0033] 2. In the present invention, through the switching component provided, the moist hot gas dried in the drying area will be transported to the interior of the fixed box through the recovery pipe, and the guide plate will divert the gas to both sides of the interior of the fixed box, and after heat exchange with the heat exchange fins, it will be discharged through the exhaust pipe to heat the fresh air inside the rectangular frame and the first rectangular through-hole, thereby improving the energy utilization rate of the device during use and reducing the effect of frost on the evaporation straight pipe and the evaporation bent pipe by the moist gas. As the material is dried, the weight of the material will become smaller and smaller. At this time, the spring will drive the top plate, the sliding block and the placement seat to move upward. During the upward movement of the top plate, the trigger button will contact the inner wall of the rectangular seat, and the trigger button will transmit a signal to the external controller. The external controller drives the electric push rod to move the second rack downward, and the second gear drives the rotating shaft and the closed blade to rotate. The closed blade will close the first rectangular through hole. At this time, the switch valve on the exhaust pipe is in a closed state, and the heat gas in the recovery pipe is transported from the middle pipe to the inside of the evaporator shell. The evaporator absorbs the latent heat in the humid air, reducing dependence on external heating, and helping to reduce the impact of the external environment on the drying efficiency of the device. By switching components to adjust the treatment method of the humid gas at different stages, the ambient humidity can be quickly reduced, avoiding the problem of excessive heat load caused by humid air circulation, accelerating the evaporation of water in the early stage, shortening the overall drying time, and in the later stage, ensuring the energy utilization and thermal stability inside the device.

[0034] 3. In the present invention, through the provided heat exchange component, the low-temperature gas after the condensation unit will be transported to the inside of the evaporation bent pipe through the connecting pipe, the connecting box, the rectangular box delivery unit and the expansion valve. As the gas is transported, it will drive the oblique blades, the rotating shaft and the reciprocating screw to rotate, so that the screw seat drives the first rack to move, so that the first gear drives the evaporation straight pipe to rotate, which helps to increase the turbulence intensity of the air laminar flow around the evaporation straight pipe, so that the convection heat transfer coefficient between the refrigerant and the air inside the evaporation straight pipe is increased, and the heat absorption effect of the refrigerant inside the evaporation straight pipe is enhanced. The centrifugal force generated by the rotation of the evaporation straight pipe may throw the condensed water or the initial frost layer away from the pipe surface, slowing down the frosting speed and reducing the decrease in heat transfer efficiency caused by frosting, which helps to improve the energy utilization rate and the overall drying effect of the device during the initial use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the drying box in the present invention;

[0037] Figure 3 Schematic diagram of the overall three-dimensional structure of the heat pump assembly of the present invention;

[0038] Figure 4 Schematic diagram of the internal three-dimensional structure of the evaporator shell and the installation box in the present invention;

[0039] Figure 5 For the present invention Figure 4 A local enlarged structural diagram of point A;

[0040] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the heat exchange component in the present invention;

[0041] Figure 7 Schematic diagram of the internal three-dimensional structure of the fixed box in the present invention;

[0042] Figure 8 For the present invention Figure 7 A schematic diagram of the partially enlarged structure at point B;

[0043] Figure 9 This is a schematic diagram of the overall three-dimensional structure of the trigger adjustment component of the present invention;

[0044] Figure 10 Schematic diagram of the internal three-dimensional structure of the rectangular seat in the present invention;

[0045] Figure 11 For the present invention Figure 10 Schematic diagram of the local enlarged structure at point C.

[0046] Legend:

[0047] 1. Drying box; 2. Air inlet unit; 3. Heat pump assembly; 301. Evaporator housing; 302. Evaporation straight pipe; 303. Compressor; 304. Condensing unit; 305. Installation box; 306. Heat exchange pipe; 307. Fan; 308. Connecting pipe; 309. Evaporation elbow; 4. Heat exchange assembly; 401. Connecting box; 402. Rectangular box; 403. Oblique blades; 404. Rotating shaft; 405. Reciprocating screw; 406. Screw seat; 407. First rack; 408. A gear; 5. Switching assembly; 501. Fixed box; 502. Recovery pipe; 503. Rectangular frame; 504. Middle frame; 505. Guide plate; 506. Electric push rod; 507. Second rack; 508. Second gear; 509. Rotating shaft; 510. Closed blade; 6. Drying area; 7. Trigger adjustment assembly; 701. Rectangular seat; 702. Screw; 703. Turning handle; 704. Bottom plate; 705. Spring; 706. Top plate; 707. Sliding block; 708. Placement seat. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] See also Figures 1-11 The present invention provides a technical solution: an air source heat pump dehumidification and drying device, wherein a storage area and two drying areas 6 are respectively provided on both sides of a drying box 1, a plurality of trigger adjustment components 7 are provided inside the drying area 6, and a heat pump component 3, a heat exchange component 4 and a switching component 5 are respectively provided inside the storage area;

[0050] The trigger adjustment component 7 includes two rectangular seats 701, the bottom side of the rectangular seat 701 is slidably connected to the bottom plate 704, the top of the bottom plate 704 is fixedly connected to multiple springs 705, the top of the spring 705 is fixedly connected to the top plate 706, trigger buttons are set on both sides of the top of the top plate 706, the top of the top plate 706 is fixedly connected to a sliding block 707, the top of the sliding block 707 extends to the outside of the rectangular seat 701 and is fixedly connected to a placement seat 708, the bottom plate 704 moves to adjust the initial stiffness of the spring 705 to be suitable for humidity triggering of different materials, the opposite sides of the two rectangular seats 701 are fixedly connected to the inner wall of the drying box 1, and the top plate 706 and the sliding block 707 are both slidably connected to the inside of the rectangular seat 701. An embedding groove is provided on the top side of the top plate 706. The trigger button is set inside the embedding groove. A screw 702 is provided at the bottom of the bottom plate 704. The screw 702 is transmission-connected to the inside of the rectangular seat 701, and the screw 702 extends to the outside of the rectangular seat 701 away from the bottom plate 704 and is fixedly connected to the handle 703. A sealed door is provided on one side of the drying box 1. The heat pump assembly 3 includes an evaporator shell 301. A mounting box 305 is fixedly connected to one side of the evaporator shell 301. The mounting box 305 and the bottom of the evaporator shell 301 are both fixedly connected to the inner wall of the drying box 1. A plurality of evaporation straight pipes 302 and evaporation elbows 309 are provided inside the evaporator shell 301. A connecting frame is provided on the outer peripheral side of the evaporation elbow 309. The connecting frame is fixedly connected to the inner wall of the evaporator shell 301 on the side away from the evaporation elbow 309. The evaporation straight pipe 302 is rotatably connected between two opposite evaporation elbows 309 through an adapter sealing head. The evaporation straight pipe 302 and the evaporation elbow 309 are distributed in an S shape. One end of the evaporation elbow 309 extends to the outside of the evaporator shell 301 and is connected to the compressor 303. The other end of the compressor 303 is connected to the condensing unit 304 through a delivery pipeline. The bottom of the condensing unit 304 is connected to the installation box. 305 is fixedly connected at the top, and a heat exchange pipe 306 is provided inside the installation box 305. The heat exchange pipe 306 is arranged in a spiral shape. One end of the heat exchange pipe 306 is connected to the condensing unit 304 through a circulation pump, and the other end of the heat exchange pipe 306 is connected to the bottom of the condensing unit 304. The condensing unit 304 is connected to a connecting pipe 308 at one end away from the conveying pipe. The other end of the connecting pipe 308 is provided with a conveying unit and an expansion valve. The bottom end of the expansion valve is connected to the evaporation elbow 309 through a connecting pipe. A fan 307 is provided on one side of the installation box 305, and the other side of the installation box 305 is connected to the bottom of the drying area 6 through an air supply pipe.

[0051] Specific implementation method: first place the device in a suitable place, then place the material to be dried on the placement seat 708, and close the sealed door on the drying box 1. At this time, the material to be dried on the placement seat 708 will squeeze the spring 705 through the sliding block 707 and the top plate 706, so that the trigger button on the top plate 706 moves away from the rectangular seat 701. The evaporation straight pipe 302 and the evaporation elbow 309 will absorb heat from the external air inside the air inlet unit 2 and transfer its heat to the refrigerant inside it. The compressor 303 compresses the low-temperature refrigerant in the evaporation straight pipe 302 and the evaporation elbow 309 into high-temperature and high-pressure gas, and transports the high-temperature and high-pressure gas to the condensing unit 304. The circulating pump will make the heat exchange pipe 306 The internal liquid exchanges heat with the high-temperature and high-pressure gas, which improves the thermal stability of the device during use. The fan 307 will transport the heat to the inside of the drying area 6 through the air supply pipe to dry the material inside the placement seat 708, so that the staff can manually operate the handle 703 to drive the screw 702 to rotate inside the rectangular seat 701 to adjust the height of the bottom plate 704, and squeeze the spring 705 through the bottom plate 704 to adjust the use stiffness and initial preload of the spring 705, so that the spring 705 is adapted to the triggering requirements of materials of different weights. This device can set different trigger thresholds according to different material characteristics, and maximize the latent heat recovery capacity of the evaporator by matching the optimal humidity switching point of the material.

[0052] The heat exchange component 4 includes a connecting box 401, one side of which is fixedly connected to the outer wall of the evaporator shell 301, a rectangular box 402 is fixedly connected to the center of the connecting box 401, the rectangular box 402 is connected to the connecting pipe 308 through the water inlet pipe, and the rectangular box 402 is connected to the delivery unit through the water outlet pipe. An oblique blade 403 is provided inside the rectangular box 402, and a rotating shaft 404 is fixedly connected to the oblique blade 403. The rotating shaft 404 is rotatably connected to the inside of the rectangular box 402, and one end of the rotating shaft 404 extends to the rectangular box 402. The outer wall of the box 402 is fixedly connected to a reciprocating screw 405, and the outer peripheral side of the reciprocating screw 405 is transmission-connected to a screw seat 406. One side of the screw seat 406 is fixedly connected to a first rack 407, and the other end of the first rack 407 extends to the inside of the evaporator shell 301, and the first rack 407 is slidably connected to the connecting box 401, the rectangular box 402 and the inside of the evaporator shell 301. One side of the first rack 407 is meshed with multiple first gears 408, and the first gears 408 are fixedly connected to the outer peripheral side of the evaporation straight pipe 302.

[0053] Specific implementation: The low-temperature gas after the condensing unit 304 is transported to the inside of the evaporation elbow 309 through the connecting pipe 308, the connecting box 401, the rectangular box 402 delivery unit and the expansion valve. As the gas is transported, it drives the oblique blades 403, the rotating shaft 404 and the reciprocating screw 405 to rotate. The linkage effect between the reciprocating screw 405 and the screw seat 406 is used to transmit power to the screw seat 406, so that the screw seat 406 drives the first rack 407 to move. Then, the linkage effect between the first rack 407 and the first gear 408 is used to transmit power to the first gear 408, so that the first gear 408 drives the evaporation straight pipe 302 The rotation of the evaporating straight pipe 302 helps increase the turbulence intensity of the laminar flow of air around the evaporating straight pipe 302, thereby increasing the convective heat transfer coefficient between the refrigerant and the air inside the evaporating straight pipe 302, and enhancing the heat absorption effect of the refrigerant inside the evaporating straight pipe 302. The centrifugal force generated by the rotation of the evaporating straight pipe 302 may throw the condensed water or the initial frost layer away from the pipe surface, slowing down the frosting speed and reducing the decrease in heat transfer efficiency caused by frosting, thereby helping to improve the energy utilization rate and the overall drying effect of the device during initial use. The reciprocating screw 405 is provided with two thread grooves with the same pitch and opposite rotation directions on the outer peripheral side, and the screw seat 406 is connected to the reciprocating screw 405 through a slider placed in the spiral groove.

[0054] The switching component 5 includes a fixed box 501, one side of the fixed box 501 is fixedly connected to the outer wall of the evaporator shell 301, and a first rectangular through hole is provided in the fixed box 501 and the evaporator shell 301, and an air inlet unit 2 is provided on the side of the fixed box 501 away from the evaporator shell 301, and one side of the air inlet unit 2 is fixedly connected to the outer wall of the drying box 1, and a second rectangular through hole is provided in the drying box 1, and the first rectangular through hole and the second rectangular through hole are on the same axis. A rectangular frame 503 is fixedly connected to the center of the fixed box 501, and the rectangular frame 503 is arranged on the outer peripheral side of the first rectangular through hole. A plurality of heat exchange fins are arranged on the outer peripheral side of the rectangular frame 503, and a guide plate 505 is fixedly connected to the top of the rectangular frame 503. A recovery pipe 502 is provided above the guide plate 505, and the recovery pipe 502 is connected to the top of the fixed box 501, and the top of the recovery pipe 502 is connected to the top of the drying area 6. An intermediate frame 504 is fixedly connected to the center of the middle frame 504, a second rack 507 is provided on one side of the middle frame 504, an electric push rod 506 is fixedly connected to the top of the second rack 507, and the electric push rod 506 is arranged inside the fixed box 501, and a plurality of second gears 508 are meshed and connected on one side of the second rack 507, and a rotating shaft 509 is fixedly connected inside the second gear 508, both ends of the rotating shaft 509 extend to the inside of the first rectangular through hole, and the rotating shaft 509 is rotatably connected to the inside of the rectangular frame 503 and the intermediate frame 504, and a closed blade 510 is sleeved on the outer peripheral side of the rotating shaft 509, and the closed blade 510 is arranged inside the first rectangular through hole, an intermediate pipe is provided on one side of the rectangular frame 503, the intermediate pipe is connected to the fixed box 501 and the first through hole, and a pressure switch valve and a flow valve are provided inside the intermediate pipe, and an exhaust pipe is connected to the bottom of the fixed box 501, and a switch valve is provided on the exhaust pipe.

[0055] Specific implementation method: The moist hot gas dried in the drying area 6 will be transported to the inside of the fixed box 501 through the recovery pipe 502, and the guide plate 505 will divert the gas to both sides of the fixed box 501, and after heat exchange with the heat exchange fins, it will be discharged through the exhaust pipe to heat the fresh air inside the rectangular frame 503 and the first rectangular through-hole, thereby improving the energy utilization rate of the device during use. While improving the energy utilization rate of the device, it reduces the impact of frost on the evaporation straight pipe 302 and the evaporation bent pipe 309, thereby preventing the impact on the heat absorption efficiency of the evaporator, and further ensuring the use effect of the device. As the material is dried, the weight of the material will become smaller and smaller. At this time, the spring 705 will drive the top plate 706, the sliding block 707 and the placement seat 708 to move upward. During the upward movement of the top plate 706, the trigger button will contact the inner wall of the rectangular seat 701. The trigger button will transmit a signal to the external controller, and the external controller will make the electric push rod 506 drive the first The second rack 507 moves downward, and the linkage effect between the second rack 507 and the second gear 508 is used to transmit power to the second gear 508, so that the second gear 508 drives the rotating shaft 509 and the closed blade 510 to rotate, and the closed blade 510 will close the first rectangular through hole. At this time, the switch valve on the exhaust pipe is in a closed state, and the hot gas in the recovery pipe 502 is transported from the middle pipe to the inside of the evaporator shell 301. The evaporator absorbs the latent heat in the humid air, reduces dependence on external heating, and helps reduce the impact of the external environment on the drying efficiency of the device. By switching the components to adjust the treatment method of the humid gas at different stages, the ambient humidity can be quickly reduced, avoiding the problem of excessive heat load caused by humid air circulation, accelerating the evaporation of water in the early stage, shortening the overall drying time, and in the later stage, ensuring the energy utilization and thermal stability inside the device. A humidity sensor can be set on the recovery pipe 502 according to actual needs to further increase the device's control over humidity discharge.

[0056] An air source heat pump dehumidification and drying method comprises the following steps:

[0057] S1. First, place the device in a suitable place, then place the material to be dried on the placement seat 708, and close the sealed door on the drying box 1. At this time, the material to be dried on the placement seat 708 will squeeze the spring 705 through the sliding block 707 and the top plate 706, causing the trigger button on the top plate 706 to move away from the rectangular seat 701;

[0058] S2. The staff manually operates the handle 703 to rotate the screw 702 to adjust the height of the base plate 704 to adjust the stiffness and initial preload of the spring 705;

[0059] S3, the evaporation straight pipe 302 and the evaporation elbow 309 absorb heat from the external air inside the air inlet unit 2 and transfer the heat to the refrigerant inside. The compressor 303 compresses the low-temperature refrigerant in the evaporation straight pipe 302 and the evaporation elbow 309 into high-temperature and high-pressure gas, and transports the high-temperature and high-pressure gas to the condensing unit 304. The circulation pump exchanges heat between the liquid in the heat exchange pipe 306 and the high-temperature and high-pressure gas. Then, the fan 307 transports the heat to the drying area 6 through the air supply pipe to dry the material in the placement seat 708.

[0060] S4. At the same time, the low-temperature gas after the condensing unit 304 is transported to the interior of the evaporation elbow 309 through the connecting pipe 308, the connecting box 401, the rectangular box 402 transport unit and the expansion valve. As the gas is transported, it drives the oblique blades 403, the rotating shaft 404 and the reciprocating screw 405 to rotate, causing the screw seat 406 to drive the first rack 407 to move, and the first gear 408 to drive the evaporation straight pipe 302 to rotate;

[0061] S5. The moist hot gas dried in the drying zone 6 is transported to the interior of the fixed box 501 through the recovery pipe 502. The guide plate 505 diverts the gas to both sides of the interior of the fixed box 501, and the gas is discharged through the exhaust pipe after heat exchange with the heat exchange fins, heating the fresh air inside the rectangular frame 503 and the first rectangular through hole.

[0062] S6. As the material is dried, its weight will become smaller and smaller. At this time, the spring 705 will drive the top plate 706, the sliding block 707 and the placement seat 708 to move upward. During the upward movement of the top plate 706, the trigger button will contact the inner wall of the rectangular seat 701. The trigger button will transmit the signal to the external controller. The external controller will make the electric push rod 506 drive the second rack 507 to move downward, so that the second gear 508 drives the rotating shaft 509 and the closing blade 510 to rotate. The closing blade 510 will close the first rectangular through hole. At this time, the switch valve on the exhaust pipe is in the closed state, and the hot gas in the recovery pipe 502 is transported from the middle pipe to the inside of the evaporator shell 301, and the evaporator absorbs the latent heat in the humid air.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An air source heat pump dehumidification and drying device, comprising a drying box (1), characterized in that: A placement area and two drying areas (6) are respectively provided on both sides of the interior of the drying box (1); a plurality of trigger adjustment components (7) are provided inside the drying area (6); and a heat pump component (3), a heat exchange component (4) and a switching component (5) are respectively provided inside the placement area; The trigger adjustment assembly (7) comprises two rectangular seats (701), wherein the bottom side of the rectangular seat (701) is slidably connected to a bottom plate (704), the top of the bottom plate (704) is fixedly connected to a plurality of springs (705), the top of the springs (705) is fixedly connected to a top plate (706), trigger buttons are provided on both sides of the top of the top plate (706), the top of the top plate (706) is fixedly connected to a sliding block (707), the top of the sliding block (707) extends to the outside of the rectangular seat (701) and is fixedly connected to a placement seat (708), and the bottom plate (704) moves to adjust the initial stiffness of the spring (705) so as to be suitable for moisture triggering of different materials; The heat pump assembly (3) comprises an evaporator shell (301), a mounting box (305) is fixedly connected to one side of the evaporator shell (301), the mounting box (305) and the bottom of the evaporator shell (301) are both fixedly connected to the inner wall of the drying box (1), a plurality of evaporation straight pipes (302) and evaporation elbows (309) are arranged inside the evaporator shell (301), and a connecting frame is provided on the outer peripheral side of the evaporation elbow (309), and the connecting frame is connected to the evaporator shell (301) on the side away from the evaporation elbow (309). The inner wall is fixedly connected, the evaporation straight pipe (302) is rotatably connected between two opposite evaporation elbows (309) through a transition sealing head, and the evaporation straight pipe (302) and the evaporation elbow (309) are distributed in an S shape, one end of the evaporation elbow (309) extends to the outside of the evaporator shell (301) and is connected to the compressor (303), and the other end of the compressor (303) is connected to the condensing unit (304) through a delivery pipe, and the bottom of the condensing unit (304) is fixedly connected to the top of the installation box (305); The switching assembly (5) comprises a fixed box (501), one side of the fixed box (501) is fixedly connected to the outer wall of the evaporator shell (301), and a first rectangular through hole is provided inside the fixed box (501) and the evaporator shell (301), an air inlet unit (2) is provided on the side of the fixed box (501) away from the evaporator shell (301), one side of the air inlet unit (2) is fixedly connected to the outer wall of the drying box (1), and a second rectangular through hole is provided inside the drying box (1), and the first rectangular through hole and the second rectangular through hole are on the same axis. A rectangular frame (503) is fixedly connected to the center of the fixed box (501), the rectangular frame (503) is arranged on the outer peripheral side of the first rectangular through hole, a plurality of heat exchange fins are arranged on the outer peripheral side of the rectangular frame (503), a guide plate (505) is fixedly connected to the top of the rectangular frame (503), a recovery pipe (502) is arranged above the guide plate (505), the recovery pipe (502) is connected to the top of the fixed box (501), and the top of the recovery pipe (502) is connected to the top of the drying area (6), the rectangular frame The center of the interior of (503) is fixedly connected to an intermediate frame (504), one side of the interior of the intermediate frame (504) is provided with a second rack (507), the top of the second rack (507) is fixedly connected to an electric push rod (506), the electric push rod (506) is provided inside the fixed box (501), one side of the second rack (507) is meshedly connected to a plurality of second gears (508), the interior of the second gear (508) is fixedly connected to a rotating shaft (509), both ends of the rotating shaft (509) extend to the first rectangular The rotating shaft (509) is rotatably connected to the inside of the rectangular frame (503) and the middle frame (504); a closed blade (510) is sleeved on the outer peripheral side of the rotating shaft (509); the closed blade (510) is arranged inside the first rectangular through hole; an intermediate pipe is provided on one side of the interior of the rectangular frame (503); the intermediate pipe is connected to the fixed box (501) and the first through hole; a pressure switch valve and a flow valve are provided inside the intermediate pipe; an exhaust pipe is connected to the bottom of the fixed box (501); and a switch valve is provided on the exhaust pipe.

2. The air source heat pump dehumidification and drying device according to claim 1, characterized in that: The two rectangular seats (701) are fixedly connected to the inner wall of the drying box (1) on opposite sides, and the top plate (706) and the sliding block (707) are slidably connected to the inside of the rectangular seat (701). An embedding groove is provided on the top side of the top plate (706), and a trigger button is provided inside the embedding groove. A screw rod (702) is provided at the bottom of the bottom plate (704). The screw rod (702) is transmission-connected to the inside of the rectangular seat (701), and one end of the screw rod (702) away from the bottom plate (704) extends to the outside of the rectangular seat (701) and is fixedly connected to a rotating handle (703). A sealing door is provided on one side of the drying box (1).

3. The air source heat pump dehumidification and drying device according to claim 1, characterized in that: A heat exchange pipe (306) is provided inside the installation box (305), and the heat exchange pipe (306) is arranged in a spiral shape. One end of the heat exchange pipe (306) is connected to the condensing unit (304) through a circulation pump, and the other end of the heat exchange pipe (306) is connected to the bottom of the condensing unit (304). The condensing unit (304) is connected to a connecting pipe (308) at one end away from the delivery pipe. The other end of the connecting pipe (308) is provided with a delivery unit and an expansion valve, and the bottom end of the expansion valve is connected to the evaporation elbow (309) through the connecting pipe. A fan (307) is provided on one side of the interior of the installation box (305), and the other side of the interior of the installation box (305) is connected to the bottom of the drying area (6) through an air supply pipe.

4. The air source heat pump dehumidification and drying device according to claim 3, characterized in that: The heat exchange assembly (4) comprises a connecting box (401), one side of the connecting box (401) is fixedly connected to the outer wall of the evaporator shell (301), a rectangular box (402) is fixedly connected to the center of the interior of the connecting box (401), the rectangular box (402) is connected to the connecting pipe (308) via a water inlet pipe, and the rectangular box (402) is connected to the conveying unit via a water outlet pipe.

5. The air source heat pump dehumidification and drying device according to claim 4, characterized in that: An oblique blade (403) is provided inside the rectangular box (402), and a rotating shaft (404) is fixedly connected inside the oblique blade (403). The rotating shaft (404) is rotatably connected inside the rectangular box (402). One end of the rotating shaft (404) extends to the outer wall of the rectangular box (402) and is fixedly connected to a reciprocating screw (405). The outer peripheral side of the reciprocating screw (405) is transmission-connected to a screw seat (406). One side of the screw seat (406) is fixedly connected to a first rack (407). The other end of the first rack (407) extends to the inside of the evaporator shell (301). The first rack (407) is slidably connected to the connection box (401), the rectangular box (402) and the inside of the evaporator shell (301). One side of the first rack (407) is meshedly connected to a plurality of first gears (408). The first gears (408) are fixedly connected to the outer peripheral side of the evaporation straight pipe (302).

6. An air source heat pump dehumidification and drying method, characterized in that: An air source heat pump dehumidification and drying device according to any one of claims 1 to 5 specifically comprises the following steps: S1. First, place the device in a suitable place, then place the material to be dried on the placement seat (708), and close the sealed door on the drying box (1). At this time, the material to be dried on the placement seat (708) will squeeze the spring (705) through the sliding block (707) and the top plate (706), so that the trigger button on the top plate (706) moves away from the rectangular seat (701); S2, having a staff member manually operate the handle (703) to drive the screw (702) to rotate, and adjust the height of the bottom plate (704) to adjust the use stiffness and initial preload of the spring (705); S3, the evaporation straight pipe (302) and the evaporation elbow (309) absorb heat from the external air inside the air inlet unit (2) and transfer the heat to the refrigerant inside the air inlet unit (2). The compressor (303) compresses the low-temperature refrigerant in the evaporation straight pipe (302) and the evaporation elbow (309) into a high-temperature and high-pressure gas, and transports the high-temperature and high-pressure gas to the condensing unit (304). The circulating pump exchanges heat between the liquid inside the heat exchange pipe (306) and the high-temperature and high-pressure gas. Then, the fan (307) transports the heat to the inside of the drying area (6) through the air supply pipe to dry the material inside the placement seat (708); S4. At the same time, the low-temperature gas after the condensation unit (304) is transported to the inside of the evaporation elbow (309) through the connecting pipe (308), the connecting box (401), the rectangular box (402) transport unit and the expansion valve. As the gas is transported, it drives the oblique blades (403), the rotating shaft (404) and the reciprocating screw (405) to rotate, causing the screw seat (406) to drive the first rack (407) to move, so that the first gear (408) drives the evaporation straight pipe (302) to rotate; S5. The moist hot gas dried in the drying area (6) is transported to the interior of the fixed box (501) through the recovery pipe (502). The guide plate (505) diverts the gas to both sides of the interior of the fixed box (501). The gas is discharged through the exhaust pipe after heat exchange with the heat exchange fins, thereby heating the fresh air in the rectangular frame (503) and the first rectangular through hole. S6. As the material is dried, its weight will become smaller and smaller. At this time, the spring (705) will drive the top plate (706), the sliding block (707) and the placement seat (708) to move upward. During the upward movement of the top plate (706), the trigger button will contact the inner wall of the rectangular seat (701). The trigger button will transmit a signal to the external controller. The external controller will drive the electric push rod (506) to drive the second rack (507) to move downward, so that the second gear (508) drives the rotating shaft (509) and the closing blade (510) to rotate. The closing blade (510) will close the first rectangular through hole. At this time, the switch valve on the exhaust pipe is in a closed state. The hot gas in the recovery pipe (502) is transported from the middle pipe to the inside of the evaporator shell (301). The evaporator absorbs the latent heat in the humid air.

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