A cascade ultra-high temperature heat pump and heat pump dryer

Abstract

The present application relates to the technical field of heat pumps, and in particular to a cascade ultra-high temperature heat pump and a heat pump dryer, which comprises a frame, a heat release chamber is arranged in the frame, a primary condenser, a secondary condenser, a tertiary condenser and a quaternary condenser are arranged in the heat release chamber from bottom to top, an air inlet is opened on one side of the frame, the air inlet is connected to the heat release chamber, and the air inlet is located below the primary condenser, a horizontal plate is arranged in the frame, a heat release centrifugal fan is arranged on the horizontal plate, the heat release centrifugal fan is located above the quaternary condenser, the air inlet end of the heat release centrifugal fan is connected to the heat release chamber, and the air outlet end of the heat release centrifugal fan extends outside the frame. The present application has the effect of improving the heat exchange efficiency of the inhaled air.

Description

Technical Field

[0001] The present application relates to the technical field of heat pumps, and in particular to a cascade ultra-high temperature heat pump and a heat pump dryer. Background Art

[0002] Heat pump dryer is a kind of equipment that uses heat pump technology for drying. Heat pump dryer achieves drying effect by circulating heat in the air, and has the advantages of high energy efficiency and environmental friendliness.

[0003] The invention patent with the publication number CN110319664A discloses a high-temperature heat pump drying device, a horizontal plate, the top left and right sides of which are respectively fixed with vertical rods and hydraulic cylinders, a drainage component is provided inside the cover body, an opening and closing component is provided below the right end of the cover body, the exhaust end of the blower is connected to the top of the condenser, a filter component is provided on the right side of the blower, and the outer wall of the air supply hose passes through the bottom left side of the box body. The high-temperature heat pump drying device, through the cooperation of the rotating component, the air intake hose and the tank body, greatly increases the tumbling frequency of the material when the material is dried, thereby shortening the drying time, improving the drying efficiency, and ensuring the uniformity of drying. Through the cooperation of the drainage component, the cover body and the exhaust hose, the hot air is quickly drained and recovered, thereby greatly saving energy and increasing the rate of waste heat recovery. Through the cooperation of the blower, the filter component and the tank body, dust pollution to the material is avoided.

[0004] In the above-mentioned patent, after the blower is started, the air is heated by the condenser only once and then sent into the cylinder through the air supply hose. However, under the action of the blower, the air flows quickly, making it difficult to ensure that the hot air is heated to the required temperature through the condenser, and the heat exchange efficiency is low. Summary of the invention

[0005] In order to improve the heat exchange efficiency of the inhaled air, the present application provides a cascade ultra-high temperature heat pump and a heat pump dryer.

[0006] In the first aspect, the present application provides a cascade ultra-high temperature heat pump, which adopts the following technical solution:

[0007] A cascade ultra-high temperature heat pump comprises a frame, a heat release chamber is arranged in the frame, a primary condenser, a secondary condenser, a third condenser and a fourth condenser are arranged in the heat release chamber from bottom to top, an air inlet is opened on one side of the frame, the air inlet is communicated with the heat release chamber, and the air inlet is located below the primary condenser, a transverse plate is arranged in the frame, a heat release centrifugal fan is arranged on the transverse plate, the heat release centrifugal fan is located above the fourth condenser, an air inlet end of the heat release centrifugal fan is communicated with the heat release chamber, and an air outlet end of the heat release centrifugal fan extends outside the frame;

[0008] The frame is provided with a connection seat based on the air inlet, and an air inlet adjustment cover is provided on the outer side of the connection seat.

[0009] By adopting the above technical solution, when the heat pump needs to be used for heating, the first-stage condenser, the second-stage condenser, the third-stage condenser and the fourth-stage condenser are first started in sequence. The working period of the condenser is a process of heat release. After the heat release centrifugal fan is started, air is sucked in from the air inlet of the rack, and then flows through the first-stage condenser, the second-stage condenser, the third-stage condenser and the fourth-stage condenser in sequence, and the air is heated to the required high temperature step by step. Finally, the high-temperature gas is sent out from the air outlet of the heat release centrifugal fan. By continuously heating the flowing air, the air is quickly heated to the required temperature, which is conducive to improving the heat exchange efficiency of the inhaled air.

[0010] The air inlet adjustment cover is fixedly installed on one side of the frame through the connecting seat, so that the air passes through the air inlet adjustment cover and then flows into the heat release cavity. The air inlet adjustment cover is used to adjust the size of the air inlet. The air intake volume changes with the size of the air inlet. The larger the air intake volume, the higher the heat exchange efficiency, and the corresponding amount of hot air generated is larger, which is conducive to improving the convenience of hot air volume adjustment.

[0011] Optionally, a first-stage heat absorption module, a second-stage heat absorption module, a third-stage heat absorption module and a fourth-stage heat absorption module are respectively connected to the first-stage condenser, the second-stage condenser, the third-stage condenser and the fourth-stage condenser in the rack, and the first-stage heat absorption module, the second-stage heat absorption module, the third-stage heat absorption module and the fourth-stage heat absorption module respectively include a compressor, an expansion valve, a gas-liquid separator and an evaporator.

[0012] By adopting the above technical solution, the compressor is used to compress and heat the refrigerant and transport the refrigerant to the condenser. After passing through the condenser, the air transfers heat with the refrigerant, thereby heating the air. The refrigerant changes from gas to liquid after releasing heat and flows into the evaporator under the action of the expansion valve. The working period of the evaporator is an endothermic process. The evaporator is used to recover heat. After the refrigerant reabsorbs the heat, it changes from liquid to gas and then flows into the gas-liquid separator. The gas-liquid separator separates the gaseous and liquid refrigerants to ensure that the gaseous refrigerant is finally input into the compressor. Such a cycle is beneficial to improving the stability of air heating and heat recovery.

[0013] Optionally, the air port adjustment cover includes an extension frame, a fixed frame and a cloth cover, the fixed frame is arranged on the outside of the connecting seat, the extension frame and the fixed frame are arranged opposite to each other, the cloth cover is arranged on the extension frame and the fixed frame, the fixed frame is provided with a connecting piece for supporting the extension frame, and the air port adjustment cover also includes a supporting assembly for supporting the cloth cover.

[0014] By adopting the above technical solution, when the air intake needs to be reduced, the extension frame is driven to contract through the connecting piece. Under the wind-blocking effect of the cloth cover, the air enters the heat release cavity from the extension frame and the fixed frame in turn. The size of the air inlet is changed by the extension frame to improve the convenience of adjusting the air inlet. The support component is used to cooperate with the extended cloth cover to avoid the cloth cover from collapsing during the air suction process.

[0015] Optionally, the connecting member is a rocker arm, which is arranged between the fixed frame and the stretching frame, one end of the rocker arm is tightly universally connected to the fixed frame near the end corner, and the other end of the rocker arm is tightly universally connected to the end corner of the stretching frame.

[0016] By adopting the above technical solution, when the swing arms at the end corners are driven to swing inward at the same time, the four swing arms simultaneously cause the extension frame to contract, thereby reducing the air intake volume by shrinking the diameter of the extension frame, and the swing arms also support the cloth cover, which is beneficial to improving the stability of the air intake volume regulation.

[0017] Optionally, the supporting assembly includes an elastic band, the surface of the cloth cover is wrinkled, the elastic band is arranged on the inner side of the cloth cover, one end of the elastic band is slidably connected to the fixed frame, and the other end of the elastic band is fixedly connected to the stretching frame.

[0018] By adopting the above technical solution, the cloth cover is supported by the elastic band, so that the cloth cover is supported when the air inlet adjustment cover is used to suck air. One end of the elastic band is slidably connected to the fixed frame to ensure that the elastic band remains in a straight line in the vertical plane when the stretching frame is stretched, thereby avoiding the elastic band from being torn.

[0019] Optionally, a slide groove is provided on the side wall of the connecting seat, a filter bag is slidably arranged in the slide groove, and the connecting seat is provided with a fixing component for fixing the filter bag.

[0020] By adopting the above technical solution, when it is necessary to filter impurities in the air, the filter bag is inserted from the slide groove into the connecting seat, and then fixed by the fixing assembly. At this time, the filter bag is fixed in the connecting seat, and the inhaled air is filtered by the filter bag, which is beneficial to reduce the dust and impurities in the air adhering to the condenser, affecting the heat release effect of the condenser, and improving the heat exchange efficiency.

[0021] Optionally, the fixing assembly includes an insertion rod, a fixing sub-seat is provided on the side wall of the connecting seat, the insertion rod is slidably arranged in the fixing sub-seat, the side wall of the filter bag is provided with a fixing ear, one end of the insertion rod is plugged into the fixing ear, the side wall of the insertion rod is sleeved with a spring, one end of the spring is fixedly connected to the side wall of the insertion rod, and the other end of the spring is fixedly connected to the side wall of the fixing sub-seat.

[0022] By adopting the above technical solution, when the insertion rod is pulled in a direction away from the fixed sub-seat, the insertion rod squeezes the spring and the insertion rod is separated from the fixing ear. At this time, the filter bag is unlocked and the impurities in the filter bag can be cleaned by taking the filter bag out of the connecting seat. When the insertion rod is released, the spring releases the elastic force and drives the insertion rod to move in a direction close to the fixed sub-seat. At this time, the insertion rod is inserted into the fixing ear and the filter bag is fixed in the connecting seat, which is beneficial to improve the stability of the filter bag disassembly and assembly.

[0023] In the second aspect, the present application proposes a heat pump dryer, comprising a body, the body being provided with an air inlet, an air inlet duct being connected between the air inlet and the air outlet end of the heat-releasing centrifugal fan, and the ratio of the diameter of one end of the air inlet duct toward the frame to the diameter of one end of the air inlet duct toward the body is 1:2.

[0024] By adopting the above technical solution, when it is necessary to dry textiles such as clothes, the textiles such as clothes are placed in the machine body. After the air is heated in the heat release chamber, the hot air is input into the machine body through the air inlet pipe, thereby drying the textiles such as clothes. Since the diameter ratio of the two ends of the air inlet pipe is 1:2, it is conducive to the wide range of input of hot air into the machine body, thereby ensuring the stability of drying of textiles such as clothes.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] When the heat pump is needed for heating, the first-stage condenser, the second-stage condenser, the third-stage condenser and the fourth-stage condenser are started in sequence. The condenser is in the process of heat release during operation. After the heat release centrifugal fan is started, air is sucked in from the air inlet of the rack, and then flows through the first-stage condenser, the second-stage condenser, the third-stage condenser and the fourth-stage condenser in sequence, and the air is heated to the required high temperature step by step. Finally, the high-temperature gas is sent out from the air outlet of the heat release centrifugal fan. By continuously heating the flowing air, the air is quickly heated to the required temperature, which is beneficial to improve the heat exchange efficiency of the inhaled air.

[0027] The air inlet adjustment cover is fixedly installed on one side of the frame through the connecting seat, so that the air passes through the air inlet adjustment cover and then flows into the heat release cavity. The air inlet adjustment cover is used to adjust the size of the air inlet. The air intake volume changes with the size of the air inlet. The larger the air intake volume, the higher the heat exchange efficiency, and the corresponding amount of hot air generated is larger, which is conducive to improving the convenience of hot air volume adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a first overall structural schematic diagram of the cascade ultra-high temperature heat pump and heat pump dryer of the present application;

[0029] Figure 2It is a second overall structural schematic diagram of the cascade ultra-high temperature heat pump and heat pump dryer of the present application;

[0030] Figure 3 It is a schematic diagram of the overall structure of the rack of the present application;

[0031] Figure 4 It is a schematic diagram of the connection between one of the first-stage condensers and one of the first-stage heat absorption modules of the present application;

[0032] Figure 5 It is a schematic diagram of the assembly structure of the air inlet adjustment cover and the rack air inlet of the present application;

[0033] Figure 6 It is a structural schematic diagram of the air port adjustment cover of the present application;

[0034] Figure 7 It is a connection diagram of the stretching frame, the fixed frame and the connecting parts of the present application;

[0035] Figure 8 is a cross-sectional view of the cloth cover of the present application;

[0036] Fig. 9 It is a schematic diagram of the filter bag structure of the present application.

[0037] Explanation of reference numerals: 1. rack; 2. heat release chamber; 3. primary condenser; 4. secondary condenser; 5. third condenser; 6. fourth condenser; 7. air inlet; 8. horizontal plate; 9. heat release centrifugal fan; 10. primary heat absorption module; 11. secondary heat absorption module; 12. third heat absorption module; 13. fourth heat absorption module; 14. compressor; 15. expansion valve; 16. gas-liquid separator; 17. evaporator; 18. heat absorption cavity; 19, exhaust port; 20, connecting seat; 21, air port adjustment cover; 22, extension frame; 23, fixed frame; 24, cloth cover; 25, swing rod; 26, elastic band; 27, folding windproof cloth; 28, elastic cloth; 29, slide; 30, filter pocket; 31, fixed sub-base; 32, plug rod; 33, fixing ear; 34, spring; 35, machine body; 36, air inlet; 37, air inlet duct; 38, return air port; 39, return air duct. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-9 This application is described in further detail.

[0039] First, see Figure 1-Figure 3A cascade ultra-high temperature heat pump comprises a frame 1, a heat release chamber 2 is arranged in the frame 1, a primary condenser 3, a secondary condenser 4, a tertiary condenser 5 and a quaternary condenser 6 are fixedly installed in the heat release chamber 2 from bottom to top, and the primary condenser 3, the secondary condenser 4, the tertiary condenser 5 and the quaternary condenser 6 are all connected. An air inlet 7 is provided on one side of the frame 1 near the bottom, the air inlet 7 is connected with the heat release chamber 2, and the air inlet 7 is located below the primary condenser 3. A horizontal plate 8 is fixedly installed in the frame 1, the horizontal plate 8 is located above the quaternary condenser 6, a heat release centrifugal fan 9 is fixedly installed on the top surface of the horizontal plate 8, the air inlet end of the heat release centrifugal fan 9 is fixedly connected with the heat release chamber 2, and the air outlet end of the heat release centrifugal fan 9 extends outside the frame 1.

[0040] When the heat release centrifugal fan 9 is started, air is sucked from the air inlet 7 of the rack 1 into the heat release chamber 2, and then the primary condenser 3, the secondary condenser 4, the tertiary condenser 5 and the quaternary condenser 6 are started simultaneously. Since the working process of the condenser is a heat release process, the air is heated step by step in the heat release chamber 2 through the primary condenser 3, the secondary condenser 4, the tertiary condenser 5 and the quaternary condenser 6, and is heated to high-temperature air of the required temperature. The temperature of the high-temperature air reaches above 130 degrees Celsius, and the high-temperature air finally flows into the terminal device from the air outlet of the heat release centrifugal fan 9 for use by the terminal device.

[0041] See also Figure 3 and Figure 4 In order to improve the heat release stability of the first-stage condenser 3, the second-stage condenser 4, the third-stage condenser 5 and the fourth-stage condenser 6, a first-stage heat absorption module 10 is installed in communication with the first-stage condenser 3 in the rack 1, a second-stage heat absorption module 11 is installed in communication with the second-stage condenser 4 in the rack 1, a third-stage heat absorption module 12 is installed in communication with the third-stage condenser 5 in the rack 1, and a fourth-stage heat absorption module 13 is installed in communication with the fourth-stage condenser 6 in the rack 1.

[0042] The primary heat absorption module 10 , the secondary heat absorption module 11 , the tertiary heat absorption module 12 and the quaternary heat absorption module 13 include a compressor 14 , an expansion valve 15 , a gas-liquid separator 16 and an evaporator 17 respectively.

[0043] Among them, the primary heat absorption module 10 is connected to the primary condenser 3 through a pipeline, and the connection order between the primary heat absorption module 10 and the primary condenser 3 is: compressor 14-primary condenser 3-expansion valve 15-evaporator 17-gas-liquid separator 16-compressor 14.

[0044] The secondary heat absorption module 11 is connected to the secondary condenser 4 through a pipeline, and the connection sequence between the secondary heat absorption module 11 and the secondary condenser 4 is: compressor 14 - secondary condenser 4 - expansion valve 15 - evaporator 17 - gas-liquid separator 16 - compressor 14 .

[0045] The third-stage heat absorption module 12 is connected to the third-stage condenser 5 through a pipeline, and the connection sequence between the third-stage heat absorption module 12 and the third-stage condenser 5 is: compressor 14-third-stage condenser 5-expansion valve 15-evaporator 17-gas-liquid separator 16-compressor 14.

[0046] The fourth-stage heat absorption module 13 is connected to the fourth-stage condenser 6 through a pipeline, and the connection sequence between the fourth-stage heat absorption module 13 and the fourth-stage condenser 6 is: compressor 14-fourth-stage condenser 6-expansion valve 15-evaporator 17-gas-liquid separator 16-compressor 14.

[0047] A heat absorption chamber 18 is also provided in the frame 1. An exhaust port 19 is provided on the other side of the frame 1 near the bottom. The exhaust port 19 is connected to the heat absorption chamber 18. The evaporators 17 corresponding to the first-stage heat absorption module 10, the second-stage heat absorption module 11, the third-stage heat absorption module 12 and the fourth-stage heat absorption module 13 are connected and arranged from bottom to top in the heat absorption chamber 18.

[0048] It is worth mentioning that see Figure 3 The first-stage heat absorption module 10 and the second-stage heat absorption module 11 are fixed on the same layer in the rack 1, the third-stage heat absorption module 12 and the fourth-stage heat absorption module 13 are fixed on the same layer in the rack 1, and the third-stage heat absorption module 12 and the fourth-stage heat absorption module 13 are located on the upper layer of the first-stage heat absorption module 10 and the second-stage heat absorption module 11.

[0049] The compressor 14 compresses and heats the refrigerant gas and delivers the refrigerant gas to the condenser. The working process of the condenser is a heat release process, so the condenser heats the inhaled air through the high-temperature refrigerant. After releasing heat, the refrigerant gas changes from gas to liquid, and then passes through the expansion valve 15 and is input into the evaporator 17. The evaporator 17 is an important part of refrigeration. By absorbing the heat of the waste heat gas, the liquid refrigerant is converted back into gas, and then input into the gas-liquid separator 16. The gas-liquid separator 16 ensures that only gaseous refrigerant enters the compressor 14. This is repeated to achieve the heating of the air and the heat recovery of the waste heat gas.

[0050] It is worth mentioning that the model of the refrigerant in this embodiment is specifically R245FA, pentafluoropropane, which is a colorless, transparent, easy-flowing liquid with a critical temperature of 154°C.

[0051] See also Figure 5 In order to adjust the air intake, the frame 1 is fixedly connected to a connection seat 20 based on the air inlet 7. The connection seat 20 is in a rectangular shape, and the middle of the connection seat 20 is hollowed out. An air port adjustment cover 21 is fixedly connected to the side of the connection seat 20 away from the frame 1.

[0052] The air inlet regulating cover 21 is used to adjust the air intake. The larger the opening of the air inlet regulating cover 21, the more air intake, the higher the heat exchange efficiency, and the larger the amount of hot air generated. The opening diameter of the air inlet regulating cover 21 is adjusted according to actual use requirements, which is conducive to improving the application range of the cascade ultra-high temperature heat pump.

[0053] For details, see Figure 6 and Figure 7 The air port adjustment cover 21 includes an extension frame 22, a fixed frame 23 and a cloth cover 24. The fixed frame 23 is fixedly connected to the outer side of the connecting seat 20. The extension frame 22 and the fixed frame 23 are arranged opposite to each other. The cloth cover 24 is located between the extension frame 22 and the fixed frame 23, and the cloth cover 24 is jointly covered on the extension frame 22 and the fixed frame 23.

[0054] It should be noted that see Figure 7 The stretching frame 22 is enclosed by four telescopic cylinders to form a rectangular parallelepiped, and the air port adjustment cover 21 also includes a connecting member, which is used to support the stretching frame 22. The connecting member is a swing rod 25, and there are four swing rods 25. The four swing rods 25 are all installed between the fixed frame 23 and the stretching frame 22, and one end of the four swing rods 25 is tightly universally connected to the position near the end corner of the fixed frame 23, and the other end of the four swing rods 25 is tightly universally connected to the end corner of the stretching frame 22.

[0055] When the four swing rods 25 are tilted and swung outward at the same time, the four swing rods 25 simultaneously stretch the stretch frame 22, and the stretch frame 22 is expanded, thereby increasing the amount of air intake. Similarly, when the four swing rods 25 are tilted and swung inward at the same time, the four swing rods 25 simultaneously contract the stretch frame 22, and the stretch frame 22 is contracted, thereby reducing the amount of air intake.

[0056] See also Figure 7 The air inlet regulating cover 21 is also provided with a supporting assembly, which is used to support the cloth cover 24 to prevent the cloth cover 24 from sinking inward when air is sucked. The supporting assembly includes an elastic band 26, which is installed between the stretching frame 22 and the fixed frame 23, and is installed on the inner side of the cloth cover 24, and one end of the elastic band 26 is slidably connected to the fixed frame 23, and the other end of the elastic band 26 is fixedly connected to the stretching frame 22.

[0057] When the stretching frame 22 is unfolded, due to the position of the stretching frame 22 and the high elasticity of the elastic belt 26, the stretching frame 22 drives the other end of the elastic belt 26 to slide along the fixed frame 23, so that the elastic belt 26 maintains a straight line in the vertical plane, avoiding the elastic belt 26 from being overstretched and broken, thereby increasing the service life of the elastic belt 26.

[0058] It should be noted that see Figure 8The cloth cover 24 includes two layers of folded windproof cloth 27 and elastic cloth 28, and the elastic cloth 28 is sewn between the two layers of folded windproof cloth 27. The cloth cover 24 is wrinkled on the surface of the folded windproof cloth 27, which is conducive to the cloth cover 24 to be stably stretched when the stretching frame 22 swings.

[0059] See also Figure 6 and Fig. 9 In order to reduce impurities in the inhaled air, a slide groove 29 is provided on the side wall of the connection seat 20, and a filter bag 30 is slidably installed in the slide groove 29. The connection seat 20 is also provided with a fixing component, which is used to fix the filter bag 30 in the slide groove 29. There are two groups of fixing components, and the two groups of fixing components are respectively located on the upper and lower sides of the filter bag 30. Each group of fixing components includes an insertion rod 32, and a fixed sub-seat 31 is fixedly connected to the side wall of the connection seat 20. The insertion rod 32 is slidably installed in the fixed sub-seat 31, and both ends of the insertion rod 32 extend outside the fixed sub-seat 31. A fixing ear 33 is fixedly connected to the side wall of the filter bag 30, and one end of the insertion rod 32 is plugged into the fixing ear 33. A spring 34 is sleeved on the side wall of the insertion rod 32, and one end of the spring 34 is fixedly connected to the side wall of the insertion rod 32, and the other end of the spring 34 is fixedly connected to the side wall of the fixed sub-seat 31.

[0060] When air is drawn from the outside of the rack 1 into the heat release chamber 2, the air first passes through the filter bag 30, at which time the filter bag 30 filters the air, thereby reducing impurities adhering to the condensers at each level and affecting the heat exchange efficiency of the condensers at each level. When it is necessary to clean the impurities in the filter bag 30, the insertion rod 32 is pulled, and the insertion rod 32 squeezes the spring 34, and the insertion rod 32 is separated from the fixing ear 33. The staff then takes the filter bag 30 out of the chute 29 and cleans the filter bag 30.

[0061] Second, see Figure 1 and Figure 2 A heat pump dryer includes a body 35. The body 35 is used for drying textiles such as clothes. An air inlet 36 is provided on one side of the top of the body 35, and an air inlet pipe 37 is fixedly connected between the air inlet 36 and the air outlet end of the heat-releasing centrifugal fan 9, and the ratio of the diameter of the end of the air inlet pipe 37 facing the frame 1 to the diameter of the end of the air inlet pipe 37 facing the body 35 is 1:2. A return air port 38 is provided on one side of the bottom of the body 35, and a return air port 39 is fixedly connected between the return air port 38 and the heat absorption chamber 18.

[0062] When it is necessary to dry textiles such as clothes, the clothes are first placed in the machine body 35. After the heat release centrifugal fan 9 is started, the air is gradually heated in the heat release chamber 2 and reaches the required temperature. Then the hot air is input into the machine body 35 from the air inlet pipe 37, so as to dry the textiles such as clothes. Since the diameter ratio of the two ends of the air inlet pipe 37 is 1:2, the hot air is input into the machine body 35 over a wide range through the air inlet pipe 37, so as to ensure the stability of drying of textiles such as clothes.

[0063] Working principle of a cascade ultra-high temperature heat pump and heat pump dryer:

[0064] When hot air needs to be provided to the machine body 35, the heat releasing centrifugal fan 9 is first started, and air is sucked from the air inlet 7 of the frame 1 into the heat releasing chamber 2, and then the primary condenser 3, the secondary condenser 4, the tertiary condenser 5 and the quaternary condenser 6 are simultaneously started. Since the working process of the condenser is a heat releasing process, the air is heated step by step in the heat releasing chamber 2 through the primary condenser 3, the secondary condenser 4, the tertiary condenser 5 and the quaternary condenser 6, and is heated to high-temperature air of the required temperature. Then the hot air is input into the machine body 35 from the air inlet pipe 37, so as to dry textiles such as clothes.

[0065] After the hot air dries the clothes, the hot air is input into the heat absorption chamber 18 from the return air duct 39. Since the working process of the evaporator 17 is a heat absorption process, the hot air transfers heat to the refrigerant in the evaporator 17. The cooled air is finally discharged from the exhaust port 19.

[0066] The air inlet regulating cover 21 is used to regulate the air intake volume. The larger the opening of the air inlet regulating cover 21 is, the more air intake volume is, the higher the heat exchange efficiency is, and the correspondingly larger the amount of hot air generated is.

[0067] When the four swing rods 25 are tilted and swung outward at the same time, the four swing rods 25 simultaneously stretch the stretch frame 22, and the stretch frame 22 is expanded, thereby increasing the amount of air intake. Similarly, when the four swing rods 25 are tilted and swung inward at the same time, the four swing rods 25 simultaneously contract the stretch frame 22, and the stretch frame 22 is contracted, thereby reducing the amount of air intake.

[0068] In summary, by continuously heating the flowing air, the air is quickly heated to the required temperature, which is beneficial to improving the heat exchange efficiency of the inhaled air. By adjusting the air intake volume of the air inlet, the heat exchange efficiency is adjusted, which is beneficial to improving the convenience of adjusting the hot air volume.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cascade ultra-high temperature heat pump, comprising a frame (1), characterized in that: A heat release chamber (2) is arranged in the frame (1), and a first-stage condenser (3), a second-stage condenser (4), a third-stage condenser (5) and a fourth-stage condenser (6) are arranged in sequence from bottom to top in the heat release chamber (2); an air inlet (7) is provided on one side of the frame (1), the air inlet (7) is connected to the heat release chamber (2), and the air inlet (7) is located below the first-stage condenser (3); a transverse plate (8) is arranged in the frame (1), and a heat release centrifugal fan (9) is arranged on the transverse plate (8); the heat release centrifugal fan (9) is located above the fourth-stage condenser (6); an air inlet end of the heat release centrifugal fan (9) is connected to the heat release chamber (2), and an air outlet end of the heat release centrifugal fan (9) extends outside the frame (1); The frame (1) is provided with a connection seat (20) based on the air inlet (7), and an air inlet adjustment cover (21) is provided on the outer side of the connection seat (20); The air port regulating cover (21) comprises an extension frame (22), a fixed frame (23) and a cloth cover (24); the fixed frame (23) is arranged on the outer side of the connecting seat (20); the extension frame (22) and the fixed frame (23) are arranged opposite to each other; the cloth cover (24) is arranged on the extension frame (22) and the fixed frame (23); the fixed frame (23) is provided with a connecting piece for supporting the extension frame (22); and the air port regulating cover (21) also comprises a supporting assembly for supporting the cloth cover (24); The connecting member is a swing rod (25), and the swing rod (25) is arranged between the fixed frame (23) and the stretching frame (22), one end of the swing rod (25) is tightly universally connected to the position of the fixed frame (23) near the end corner, and the other end of the swing rod (25) is tightly universally connected to the end corner of the stretching frame (22); The support assembly comprises an elastic band (26), the surface of the cloth cover (24) is wrinkled, the elastic band (26) is arranged on the inner side of the cloth cover (24), one end of the elastic band (26) is slidably connected to the fixed frame (23), and the other end of the elastic band (26) is fixedly connected to the stretching frame (22).

2. A cascade ultra-high temperature heat pump according to claim 1, characterized in that: The rack (1) is provided with a first-stage heat absorption module (10), a second-stage heat absorption module (11), a third-stage heat absorption module (12) and a fourth-stage heat absorption module (13) in communication with the first-stage condenser (3), the second-stage condenser (4), the third-stage condenser (5) and the fourth-stage condenser (6), respectively; the first-stage heat absorption module (10), the second-stage heat absorption module (11), the third-stage heat absorption module (12) and the fourth-stage heat absorption module (13) respectively include a compressor (14), an expansion valve (15), a gas-liquid separator (16) and an evaporator (17).

3. The cascade ultra-high temperature heat pump according to claim 1, characterized in that: A sliding groove (29) is provided on the side wall of the connecting seat (20), a filter bag (30) is slidably arranged in the sliding groove (29), and the connecting seat (20) is provided with a fixing component for fixing the filter bag (30).

4. A cascade ultra-high temperature heat pump according to claim 3, characterized in that: The fixing assembly comprises an insertion rod (32), a fixing sub-seat (31) is provided on the side wall of the connecting seat (20), the insertion rod (32) is slidably arranged in the fixing sub-seat (31), the side wall of the filter bag (30) is provided with a fixing ear (33), one end of the insertion rod (32) is plugged into the fixing ear (33), the side wall of the insertion rod (32) is sleeved with a spring (34), one end of the spring (34) is fixedly connected to the side wall of the insertion rod (32), and the other end of the spring (34) is fixedly connected to the side wall of the fixing sub-seat (31).

5. A heat pump dryer, based on a cascade ultra-high temperature heat pump according to any one of claims 1 to 4, characterized in that: The machine body (35) comprises an air inlet (36) provided on the machine body (35); an air inlet pipe (37) is provided between the air inlet (36) and the air outlet end of the heat-releasing centrifugal fan (9); the ratio of the diameter of one end of the air inlet pipe (37) facing the frame (1) to the diameter of one end of the air inlet pipe (37) facing the machine body (35) is 1:2.

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