A waste heat recovery heat pump drying device

Abstract

The present invention discloses a waste heat recovery heat pump drying device, comprising a box, a first drying box fixedly connected to one side of the box, the first drying box is divided into a first heating zone, a first hot air cylinder is fixedly connected to the inner side of the side wall of the box, a second drive motor is fixedly installed in the first hot air cylinder, and a second fan blade is fixedly connected to the rotating shaft of the second drive motor; a second drying box is fixedly connected to one side of the box, and the second drying box is divided into a second heating zone; a second hot air cylinder is fixedly connected to the inner side of the side wall of the box, a fourth drive motor is fixedly installed in the second hot air cylinder, and a fourth fan blade is fixedly connected to the rotating shaft of the fourth drive motor; a second ventilation port connected to the outside is provided on the side wall of the second heating zone. The present invention can make full use of heat by continuously circulating and heating the hot air in the box.

Description

Technical field:

[0001] The invention relates to the technical field of heat pump drying device structures, and in particular to a waste heat recovery heat pump drying device. Background technology:

[0002] Drying is a high-energy consumption process. Traditional hot air drying is widely used due to its low cost. However, since the high-temperature and high-humidity air is continuously discharged through displacement, it has disadvantages such as high energy consumption and slow drying rate. In addition, the temperature and humidity uniformity in the drying room is poor, and the hot and humid environment formed is difficult to control.

[0003] Among the existing drying methods, one method is to use a heat pump dryer to achieve the drying operation of the material. When the high-temperature heat pump drying unit is working, it absorbs energy Q0 from the low-temperature environment medium in the evaporator: it consumes part of the energy itself, that is, the power consumption of the compressor W: it releases heat QC in the condenser through the working fluid circulation system, QC = Q0 + W, so the efficiency of the high-temperature heat pump drying unit is (Q0 + W) / W, and the heating efficiency of other heating equipment is less than 1, so the heating efficiency of the high-temperature heat pump drying unit is much greater than the efficiency of other heating equipment. It can be seen that the use of a high-temperature heat pump drying unit as a drying device can save energy, and at the same time reduce the emission of pollutants such as CO2, achieving the effect of energy saving and emission reduction. The existing heat pump drying has low efficiency and cannot utilize the hot air discharged from the drying room, resulting in energy waste and reduced efficiency. Summary of the invention:

[0004] The purpose of the present invention is to solve the technical problem that the existing heat pump drying cannot utilize the hot air discharged from the drying room, resulting in energy waste, and to provide a waste heat recovery heat pump drying device.

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

[0006] A waste heat recovery heat pump drying device comprises a box body, one side of which is fixedly connected to a first drying box, a first partition is provided in the first drying box and the first partition divides the first drying box into a first heating zone, a first functional zone and a first evaporation zone, a first compressor is installed in the first functional zone, a first condenser is installed in the first heating zone, a first evaporator is installed in the first evaporation zone, a medium delivery pipe of the first compressor is connected to one end of the first condenser, the other end of the first condenser is connected to one end of the first evaporator after being connected in series with an expansion valve, and the other end of the first evaporator is connected to the first compressor; a first ventilation hole connected to the outside is opened on a side wall of one side of the first evaporation zone, and the first evaporation zone The first fan blade is fixedly connected to the output shaft of the first drive motor, and the first fan blade is fixedly connected to the output shaft of the first drive motor, and the first fan blade is used to exhaust the gas in the first evaporation zone outward after rotation; a first hot air outlet and a first air exchange outlet are provided on the side wall connected to the first heating zone of the box body; the first hot air cylinder is fixedly connected to the inner side of the side wall of the box body, and the first hot air cylinder covers the outer side of the first hot air outlet, and the second drive motor is fixedly installed in the first hot air cylinder, and the second fan blade used to suck the hot air in the first heating zone into the box body is fixedly connected to the rotating shaft of the second drive motor;

[0007] A second drying box is fixedly connected to one side of the box body, a second partition is provided in the second drying box and the second partition divides the second drying box into a second heating zone, a second functional zone and a second evaporation zone, a second compressor is installed in the second functional zone, a second condenser is installed in the second heating zone, a second evaporator is installed in the second evaporation zone, a medium delivery pipe of the second compressor is connected to one end of the second condenser, the other end of the second condenser is connected to one end of the second evaporator after being connected in series with an expansion valve, and the other end of the second evaporator is connected to the second compressor; a second ventilation hole communicating with the outside is opened on one side wall of the second evaporation zone, a second exhaust pipe is fixedly connected to the other side wall of the second evaporation zone, and A second air outlet located in the area corresponding to the exhaust cylinder is provided on the side wall of the second evaporation zone, and a third drive motor is fixedly installed in the second exhaust cylinder, and a third fan blade is fixedly connected to the output shaft of the third drive motor, and the third fan blade is used to discharge the gas in the second evaporation zone to the outside after rotation; a second hot air outlet is provided on the side wall connecting the box body and the second heating zone, a second hot air cylinder is fixedly connected to the inner side of the side wall of the box body and the second hot air cylinder covers the outer side of the second hot air outlet, and a fourth drive motor is fixedly installed in the second hot air cylinder, and a fourth fan blade for sucking the hot air in the second heating zone into the box body is fixedly connected to the rotating shaft of the fourth drive motor; a second ventilation outlet connected to the outside is provided on the side wall of the second heating zone.

[0008] Furthermore, a first ventilation cylinder is fixedly connected to the side wall of the first heating zone located on the side of the first air exchange port, a fifth drive motor is fixedly installed in the first ventilation cylinder, a fifth fan blade is fixedly connected to the output shaft of the fifth drive motor, and the fifth fan blade is used to rotate to suck air inside the box into the first heating zone for heating.

[0009] Furthermore, a second ventilation cylinder is fixedly connected to the outer side wall of the second heating zone, the second ventilation cylinder cover is on the outside of the second ventilation port, a sixth drive motor is fixedly installed in the second ventilation cylinder, a sixth fan blade is fixedly connected to the output shaft of the sixth drive motor, and the sixth fan blade is used to draw new air from the outside into the second heating zone for heating.

[0010] Furthermore, a seventh drive motor is fixedly installed on the upper end of the box body, and the rotating shaft of the seventh drive motor extends into the inner side of the box body and is fixedly connected to an air guide plate. The air guide plate is arranged inclined as a whole, and the cross-section of the air guide plate is corrugated. The air guide plate is arranged between the first hot air cylinder and the second hot air cylinder.

[0011] Furthermore, a material placement rack is fixedly connected to the bottom of the box.

[0012] Furthermore, ventilation holes are provided on the inner wall of the box.

[0013] A waste heat recovery heat pump drying device provided by the present invention has the following beneficial effects: during use, the air entering the second heating zone from the outside is heated by the second condenser in the second drying machine box, and the fourth fan blade driven by the fourth drive motor rotates to suck the heated air into the box, thereby heating and drying the material in the box, and the air with heat during the material drying enters the first heating zone through the first air exchange port. After the air is heated in the first heating zone, the air heated again enters the box to heat the material, thereby continuously heating and drying the material; by continuously circulating and heating the hot air in the box, the heat can be fully utilized, and the energy utilization rate and drying efficiency are effectively improved; the air guide plate is driven to rotate by the seventh drive motor, and the hot air generated by the first hot air cylinder and the second hot air cylinder is guided by the rotation of the air guide plate, so that the hot air inside the box is more uniform, and the air guide plate adopts a corrugated structure, so that the airflow of the hot air can be guided to every corner, further improving the uniformity of the hot air in the box. Description of the drawings:

[0014] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0015] Figure 1 A schematic diagram of the structure of a waste heat recovery heat pump drying device provided by the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the local structure of the A part;

[0017] Figure 3 for Figure 1 Schematic diagram of the local structure of the middle B area;

[0018] Figure 4 for Figure 1 Schematic diagram of the local structure of the middle C part;

[0019] Figure 5 for Figure 1 Schematic diagram of the local structure of the D part;

[0020] Figure 6 for Figure 1 Schematic diagram of the local structure of the E part;

[0021] Figure 7 This is a schematic diagram of the top cross-sectional structure of the second ventilation port of a waste heat recovery heat pump drying device provided by the present invention.

[0022] Explanation of the reference numerals in the figure: 1. Box; 11. First hot air outlet; 12. First air exchange outlet; 13. First hot air cylinder; 131. Second drive motor; 132. Second fan blade; 14. Second hot air outlet; 15. Second hot air cylinder; 151. Fourth drive motor; 152. Fourth fan blade; 16. Seventh drive motor; 17. Air guide plate; 18. Material placement rack; 19. Air vent; 2. First drying machine box; 21. First partition; 22. First heating zone; 221. First condenser; 222. First air exchange cylinder; 223. Fifth drive motor; 224. Fifth fan blade; 23. First functional zone; 231. First compressor; 24. First evaporation zone; 241. first evaporator; 242. first ventilation hole; 243. first exhaust pipe; 244. first air outlet; 245. first drive motor; 246. first fan blade; 3. second drying cabinet; 31. second partition; 32. second heating zone; 321. second condenser; 322. second air exchange port; 323. second air exchange pipe; 324. sixth drive motor; 325. sixth fan blade; 33. second functional zone; 331. second compressor; 34. second evaporation zone; 341. second evaporator; 342. second ventilation hole; 343. second exhaust pipe; 344. second air outlet; 345. third drive motor; 346. third fan blade. Specific implementation method:

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0026] like Figure 1-7As shown, a waste heat recovery heat pump drying device comprises a box body 1, one side of the box body 1 is fixedly connected to a first drying machine box 2, a first partition 21 is provided in the first drying machine box 2, and the first partition 21 divides the first drying machine box 2 into a first heating zone 22, a first functional zone 23, and a first evaporation zone 24, a first compressor 231 is installed in the first functional zone 23, a first condenser 221 is installed in the first heating zone 22, a first evaporator 241 is installed in the first evaporation zone 24, a medium delivery pipe of the first compressor 231 is connected to one end of the first condenser 221, the other end of the first condenser 221 is connected to one end of the first evaporator 241 after being connected in series with an expansion valve, and the other end of the first evaporator 241 is connected to the first compressor 231; a first ventilation hole 242 communicating with the outside is opened on one side wall of the first evaporation zone 24, and the first evaporation A first exhaust pipe 243 is fixedly connected to the side wall of the other side of the zone 24, and a first air outlet 244 located in the area corresponding to the exhaust pipe is opened on the side wall of the first evaporation zone 24, a first drive motor 245 is fixedly installed in the first exhaust pipe 243, and a first fan blade 246 is fixedly connected to the output shaft of the first drive motor 245, and the first fan blade 246 is used to rotate and discharge the gas in the first evaporation zone 24 to the outside; a first hot air outlet 11 and a first air exchange outlet 12 are opened on the side wall of the box body 1 connected to the first heating zone 22, a first hot air cylinder 13 is fixedly connected to the inner side of the side wall of the box body 1, and the first hot air cylinder cover is on the outer side of the first hot air outlet 11, a second drive motor 131 is fixedly installed in the first hot air cylinder 13, and a second fan blade 132 for sucking the hot air in the first heating zone 22 into the box body 1 is fixedly connected to the rotating shaft of the second drive motor 131;

[0027] A second drying box 3 is fixedly connected to one side of the box body 1, a second partition 31 is provided in the second drying box 3, and the second partition 31 divides the second drying box 3 into a second heating zone 32, a second functional zone 33, and a second evaporation zone 34, a second compressor 331 is installed in the second functional zone 33, a second condenser 321 is installed in the second heating zone 32, a second evaporator 341 is installed in the second evaporation zone 34, a medium delivery pipe of the second compressor 331 is connected to one end of the second condenser 321, the other end of the second condenser 321 is connected to one end of the second evaporator 341 after being connected in series with an expansion valve, and the other end of the second evaporator 341 is connected to the second compressor 331; a second ventilation hole 342 communicating with the outside is opened on one side wall of the second evaporation zone 34, and a second exhaust pipe 34 is fixedly connected to the other side wall of the second evaporation zone 34 3, and a second air outlet 344 located in the area corresponding to the exhaust pipe is opened on the side wall of the second evaporation zone 34, a third drive motor 345 is fixedly installed in the second exhaust pipe 343, and a third fan blade 346 is fixedly connected to the output shaft of the third drive motor 345, and the third fan blade 346 is used to rotate and discharge the gas in the second evaporation zone 34 to the outside; a second hot air port 14 is opened on the side wall of the box body 1 connected to the second heating zone 32, a second hot air cylinder 15 is fixedly connected to the inner side of the side wall of the box body 1 and the second hot air cylinder cover is on the outer side of the second hot air port 14, a fourth drive motor 151 is fixedly installed in the second hot air cylinder 15, and a fourth fan blade 152 for sucking the hot air in the second heating zone 32 into the box body 1 is fixedly connected to the rotating shaft of the fourth drive motor 151; a second ventilation port 322 communicating with the outside is opened on the side wall of the second heating zone 32.

[0028] Specifically, a first ventilation cylinder 222 is fixedly connected to the side wall of the first heating zone 22 located on the side of the first air exchange port 12, a fifth drive motor 223 is fixedly installed in the first ventilation cylinder 222, and a fifth fan blade 224 is fixedly connected to the output shaft of the fifth drive motor 223. The fifth fan blade 224 is used to rotate and suck the air inside the box 1 into the first heating zone 22 for heating.

[0029] Specifically, a second ventilation cylinder 323 is fixedly connected to the outer side wall of the second heating zone 32, and the second ventilation cylinder 323 covers the outer side of the second ventilation port 322. A sixth drive motor 324 is fixedly installed in the second ventilation cylinder 323, and a sixth fan blade 325 is fixedly connected to the output shaft of the sixth drive motor 324. The sixth fan blade 325 is used to draw new air from the outside into the second heating zone 32 for heating.

[0030] Specifically, a seventh drive motor 16 is fixedly installed on the upper end of the box body 1, and the rotating shaft of the seventh drive motor 16 extends into the inner side of the box body 1 and is fixedly connected to an air guide plate 17. The air guide plate 17 is arranged obliquely as a whole, and the cross-section of the air guide plate 17 is corrugated. The air guide plate 17 is arranged between the first hot air cylinder 13 and the second hot air cylinder 15.

[0031] Specifically, a material placement rack 18 is fixedly connected to the bottom of the box body 1.

[0032] Specifically, a ventilation hole 19 is opened on the inner wall of the box body 1.

[0033] The above technical solution is adopted: the air entering the second heating zone 32 from the outside is heated by the second condenser 321 in the second drying machine box 3, and the fourth fan blade 152 driven by the fourth driving motor 151 rotates to suck the heated air into the box body 1, so as to heat and dry the material in the box body 1, and the air with heat during the material drying enters the first heating zone 22 through the first air exchange port 12. After the air is heated in the first heating zone 22, the air heated again enters the box body 1 to heat the material, so as to continuously heat and dry the material; by continuously circulating and heating the hot air in the box body 1, the heat can be fully utilized, and the energy utilization rate and drying efficiency are effectively improved; the air guide plate 17 is driven to rotate by the seventh driving motor 16, and the hot air generated by the first hot air cylinder 13 and the second hot air cylinder 15 is guided by the rotation of the air guide plate 17, so that the hot air inside the box body 1 is more uniform, and the air guide plate 17 adopts a corrugated structure, so that the airflow of the hot air can be guided to each corner, further improving the uniformity of the hot air in the box body 1.

[0034] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste heat recovery heat pump drying device, characterized in that: The invention comprises a housing (1), one side of which is fixedly connected to a first drying box (2), a first partition (21) being provided in the first drying box (2), and the first partition (21) dividing the first drying box (2) into a first heating zone (22), a first functional zone (23), and a first evaporation zone (24), a first compressor (231) being installed in the first functional zone (23), a first condenser (221) being installed in the first heating zone (22), a first evaporator (241) being installed in the first evaporation zone (24), a medium delivery pipe of the first compressor (231) being connected to one end of the first condenser (221), the other end of the first condenser (221) being connected in series with an expansion valve and then being connected to one end of the first evaporator (241), and the other end of the first evaporator (241) being connected to the first compressor (231); a first ventilation hole (242) being connected to the outside is provided on a side wall of one side of the first evaporation zone (24), and the other end of the first evaporation zone (24) is provided with a first ventilation hole (242) being connected to the outside. A first exhaust pipe (243) is fixedly connected to the side wall, and a first air outlet (244) located in a region corresponding to the first exhaust pipe is opened on the side wall of the first evaporation zone (24). A first drive motor (245) is fixedly installed in the first exhaust pipe (243), and a first fan blade (246) is fixedly connected to the output shaft of the first drive motor (245). The first fan blade (246) is used to rotate to discharge gas from the first evaporation zone (24) to the outside; the box body (1) and the first exhaust pipe (243) are connected to each other. A first hot air outlet (11) and a first air exchange outlet (12) are provided on the side wall connected to the hot zone (22); a first hot air cylinder (13) is fixedly connected to the inner side of the side wall of the box body (1) and the first hot air cylinder covers the outer side of the first hot air outlet (11); a second drive motor (131) is fixedly installed in the first hot air cylinder (13); a second fan blade (132) for sucking hot air in the first heating zone (22) into the box body (1) is fixedly connected to the rotating shaft of the second drive motor (131); A second drying box (3) is fixedly connected to one side of the box body (1); a second partition (31) is provided in the second drying box (3), and the second partition (31) divides the second drying box (3) into a second heating area (32), a second functional area (33), and a second evaporation area (34); a second compressor (331) is installed in the second functional area (33); a second condenser (321) is installed in the second heating area (32); and a second evaporator (341) is installed in the second evaporation area (34). ), the medium delivery pipe of the second compressor (331) is connected to one end of the second condenser (321), the other end of the second condenser (321) is connected to one end of the second evaporator (341) after being connected in series with an expansion valve, and the other end of the second evaporator (341) is connected to the second compressor (331); a second ventilation hole (342) communicating with the outside is opened on one side wall of the second evaporation area (34), and a second exhaust pipe (342) is fixedly connected to the other side wall of the second evaporation area (34). 43), and a second air outlet (344) is provided on the side wall of the second evaporation zone (34) and is located in the area corresponding to the second exhaust pipe, a third drive motor (345) is fixedly installed in the second exhaust pipe (343), and a third fan blade (346) is fixedly connected to the output shaft of the third drive motor (345), and the third fan blade (346) is used to rotate and discharge the gas in the second evaporation zone (34) to the outside; a second hot air outlet is provided on the side wall connecting the box body (1) and the second heating zone (32) (14), a second hot air cylinder (15) is fixedly connected to the inner side of the side wall of the box body (1) and the second hot air cylinder is covered on the outer side of the second hot air outlet (14); a fourth drive motor (151) is fixedly installed in the second hot air cylinder (15); a fourth fan blade (152) for sucking hot air in the second heating zone (32) into the box body (1) is fixedly connected to the rotating shaft of the fourth drive motor (151); a second ventilation outlet (322) communicating with the outside is opened on the side wall of the second heating zone (32); A first ventilation cylinder (222) is fixedly connected to a side wall of the first heating zone (22) located on one side of the first air exchange port (12); a fifth drive motor (223) is fixedly installed in the first ventilation cylinder (222); a fifth fan blade (224) is fixedly connected to an output shaft of the fifth drive motor (223); the fifth fan blade (224) is used to rotate and suck air inside the box (1) into the first heating zone (22) for heating; A second ventilation cylinder (323) is fixedly connected to the outer side wall of the second heating zone (32); the second ventilation cylinder (323) is covered on the outer side of the second ventilation port (322); a sixth drive motor (324) is fixedly installed in the second ventilation cylinder (323); a sixth fan blade (325) is fixedly connected to the output shaft of the sixth drive motor (324); the sixth fan blade (325) is used to draw new air from the outside into the second heating zone (32) for heating; A seventh drive motor (16) is fixedly mounted on the upper end of the box body (1); a rotating shaft of the seventh drive motor (16) extends into the inner side of the box body (1) and is fixedly connected to an air guide plate (17); the air guide plate (17) is arranged obliquely as a whole, and a cross section of the air guide plate (17) is corrugated; the air guide plate (17) is arranged between the first hot air cylinder (13) and the second hot air cylinder (15).

2. A waste heat recovery heat pump drying device according to claim 1, characterized in that: A material placement rack (18) is fixedly connected to the bottom of the box body (1).

3. The waste heat recovery heat pump drying device according to claim 1, characterized in that: The inner wall of the box body (1) is provided with a ventilation hole (19).

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