Heat pump drying machine with heat pipe heat recovery device

Abstract

The utility model relates to the technical field of drying equipment, and discloses a heat pump drying machine with a heat pipe heat recovery device, which comprises a base, a heat pump unit and a drying groove are respectively and fixedly arranged on the upper surface of the base, a sealing cover is covered on the top of the drying groove, and an air inlet and an air outlet are respectively arranged on the side wall of the drying groove. And the air outlet is positioned above the air inlet. The heat pump unit is used for heating air flowing in the air supply pipe, hot air enters the drying groove through the air inlet to heat and dry materials, humid and hot air is discharged to the external environment through the air outlet, and when air is discharged, heat in airflow can be transmitted to a medium in the heat recovery circulating pipe, so that the heat recovery circulating pipe is used for recovering the heat in the drying groove. And then the circulating pump drives the medium to flow in the coil pipe, the purpose of preheating air entering the air supply pipe can be achieved, and therefore the air heating effect of the heat pump unit can be improved, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and more specifically to a heat pump dryer with a heat pipe heat recovery device. Background Technology

[0002] A heat pump dryer is a new type of high-efficiency, energy-saving dryer, operating on the principle of a reverse Carnot cycle. A small amount of electricity drives a compressor, causing the working fluid to evaporate into a gaseous state in the evaporator, absorbing a large amount of heat energy from the air. Subsequently, the gaseous working fluid is compressed into a high-temperature, high-pressure gas by the compressor, entering the condenser to release heat and thus heating the drying medium. This process is continuously repeated, ultimately achieving the drying of the material.

[0003] During the operation of a heat pump dryer, the humid air generated after drying the material is directly discharged into the outside air to achieve the drying effect. However, the discharged humid air contains a certain amount of heat, and direct discharge results in a certain degree of heat loss, reducing the efficiency of energy utilization.

[0004] In view of this, the present invention proposes a heat pump dryer with a heat pipe heat recovery device to solve this problem. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a heat pump dryer with a heat pipe heat recovery device to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a heat pump dryer with a heat pipe heat recovery device, including a base, on the upper surface of which a heat pump unit and a drying tank are fixedly installed respectively. The top of the drying tank is covered with a cap, and the side walls of the drying tank are respectively provided with an air inlet and an air outlet, with the air outlet located above the air inlet. The outer wall of the drying tank is provided with a ring cover corresponding to the air inlet. An air supply pipe is provided on the surface of the heat pump unit, and the air outlet end of the air supply pipe is connected to the ring cover. The outer wall of the drying tank is provided with an annular baffle corresponding to the air outlet. The bottom end of the annular baffle is an open structure. A heat recovery circulation pipe is fixedly installed on the inner top wall of the annular baffle. The bottom end of the heat recovery circulation pipe extends into the interior of the air supply pipe and is fixedly connected to a coil. The coil is close to the air inlet end of the air supply pipe. A circulation pump is provided on the surface of the heat recovery circulation pipe.

[0007] As a further description of the above technical solution: there are several air inlets and outlets, and the several air inlets and outlets are arranged in a circumferential array at equal intervals on the surface of the drying tank, and the inner walls of the air inlets and outlets are fitted with intercepting nets; by setting the intercepting nets, it is possible to prevent materials from entering the interior of the air inlets and outlets.

[0008] As a further description of the above technical solution: the heat pump unit includes a casing, an evaporator is fixedly installed on the lower left side of the casing, a condenser is installed in the middle section of the air supply pipe, the evaporator and the condenser are connected by a medium circulation pipe, and a compressor is installed in the middle section of the medium circulation pipe, and the compressor is fixedly installed at the bottom inside the casing.

[0009] As a further description of the above technical solution: a fan is fixedly installed at the air inlet end of the air supply pipe, and the air outlet end of the fan faces the inside of the air supply pipe; by setting up the fan, external air can be blown into the interior of the drying tank through the air supply pipe.

[0010] As a further description of the above technical solution: the air inlet end of the fan is detachably installed with a drying box via a thread, and the inside of the drying box is filled with silica gel desiccant; by setting up the drying box, the moisture in the outside air can be adsorbed, thereby ensuring the drying efficiency of the airflow on the material inside the drying tank and ensuring that the material is thoroughly dried.

[0011] As a further description of the above technical solution: a sealing rubber ring is provided at the bottom of the cover, a handle is fixedly installed on the upper surface of the cover, and a hygrometer is embedded in the surface of the cover; by setting the sealing rubber ring, the sealing effect of the cover on the drying tank can be ensured, and by setting the hygrometer, the humidity inside the drying tank can be detected, which makes it convenient for staff to understand the progress of the drying work.

[0012] As a further description of the above technical solution: a stirring motor is fixedly installed at the bottom of the drying tank, and the output shaft of the stirring motor extends into the interior of the drying tank and is fixedly installed with a stirring paddle; by setting the stirring motor and the stirring paddle, the material inside the drying tank can be stirred to ensure the uniformity of drying and to promote the flow of air in the gaps between the materials.

[0013] As a further description of the above technical solution: the outer wall of the drying tank is provided with a control panel, which is electrically connected to an external power source through wires.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. Compared with existing technologies, this heat pump dryer with heat pipe heat recovery device places materials inside the drying tank and uses a heat pump unit to heat the air flowing inside the air supply pipe. The hot air enters the drying tank through the air inlet to heat and dry the materials. The hot and humid air is discharged to the external environment through the air outlet. During the gas discharge, the heat in the airflow can be transferred to the medium inside the heat recovery circulation pipe to recover the heat energy. Then, the medium is driven by the circulation pump to flow inside the coil, which can achieve the purpose of preheating the air entering the air supply pipe, thereby improving the heating effect of the heat pump unit and achieving the purpose of saving energy.

[0016] 2. Compared with existing technologies, this heat pump dryer with a heat pipe heat recovery device can prevent materials from entering the air inlet and outlet by setting up an intercepting net; it can blow external air into the drying tank through the air supply pipe by setting up a fan; it can adsorb moisture in the external air by setting up a drying box, thereby ensuring the drying efficiency of the airflow on the materials inside the drying tank and ensuring thorough drying of the materials; it can ensure the sealing effect of the cover on the drying tank by setting up a sealing rubber ring; it can detect the humidity inside the drying tank by setting up a hygrometer, which can facilitate the staff to understand the progress of the drying work; and it can agitate the materials inside the drying tank by setting up a stirring motor and stirring paddle, ensuring the uniformity of drying and promoting the flow of air in the gaps between the materials. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the drying tank of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the heat pump unit of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the coil of this utility model.

[0021] The attached diagram is labeled as follows: 1. Base; 2. Heat pump unit; 201. Casing; 202. Evaporator; 203. Condenser; 204. Medium circulation pipe; 205. Compressor; 3. Drying tank; 4. Cover; 5. Air inlet; 6. Air outlet; 7. Ring cover; 8. Air supply duct; 9. Annular baffle; 10. Heat recovery circulation pipe; 11. Coil; 12. Circulation pump; 13. Interception net; 14. Fan; 15. Drying box; 16. Sealing rubber ring; 17. Hygrometer; 18. Stirring motor; 19. Stirring paddle; 20. Control panel. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The heat pump dryer with heat pipe heat recovery device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1 to 4This utility model provides a heat pump dryer with a heat pipe heat recovery device, including a base 1, a heat pump unit 2 and a drying tank 3 respectively fixedly installed on the upper surface of the base 1, a cover 4 is provided on the top of the drying tank 3, and a control panel 20 is provided on the outer wall of the drying tank 3. The control panel 20 is electrically connected to an external power source through wires.

[0024] The drying tank 3 has an air inlet 5 and an air outlet 6 on its side wall, with the air outlet 6 located above the air inlet 5.

[0025] There are several air inlets 5 and several air outlets 6. The air inlets 5 and several air outlets 6 are arranged in a circular array and are equidistantly opened on the surface of the drying tank 3. The inner walls of the air inlets 5 and air outlets 6 are all fitted with intercepting nets 13.

[0026] By setting up the interception net 13, materials can be prevented from entering the interior of the air inlet 5 and the air outlet 6.

[0027] The outer wall of the drying tank 3 is provided with a ring cover 7 corresponding to the air inlet 5. The surface of the heat pump unit 2 is provided with an air supply pipe 8. A fan 14 is fixedly installed at the air inlet end of the air supply pipe 8, and the air outlet end of the fan 14 faces the inside of the air supply pipe 8. The air outlet end of the air supply pipe 8 is connected to the ring cover 7.

[0028] By setting up a fan 14, external air can be blown into the interior of the drying tank 3 through the air supply pipe 8.

[0029] The heat pump unit 2 includes a casing 201. An evaporator 202 is fixedly installed on the lower left side of the casing 201. A condenser 203 is installed in the middle section of the air supply duct 8. The evaporator 202 and the condenser 203 are connected by a medium circulation pipe 204. A compressor 205 is installed in the middle section of the medium circulation pipe 204. The compressor 205 is fixedly installed at the bottom inner part of the casing 201.

[0030] The evaporator 202 absorbs heat by evaporating from the air under the action of the compressor 205. The absorbed heat is then transferred to the condenser 203 through the medium in the medium circulation pipe 204. The heat is then released by condensation in the condenser 203, thus heating the airflow inside the air supply pipe 8.

[0031] The heat pump dryer with heat pipe heat recovery device places the material inside the drying tank 3 and uses the heat pump unit 2 to heat the air flowing inside the air supply pipe 8. The hot air enters the drying tank 3 through the air inlet 5 to heat and dry the material, and the hot and humid air is discharged to the external environment from the air outlet 6.

[0032] The outer wall of the drying tank 3 is provided with an annular baffle 9 corresponding to the air outlet 6. The bottom end of the annular baffle 9 is open. A heat recovery circulation pipe 10 is fixedly installed on the inner top wall of the annular baffle 9. The bottom end of the heat recovery circulation pipe 10 extends into the interior of the air supply pipe 8 and is fixedly connected to a coil 11. The coil 11 is close to the air inlet end of the air supply pipe 8. A circulation pump 12 is provided on the surface of the heat recovery circulation pipe 10.

[0033] Furthermore, when the airflow is discharged from the air outlet 6, the heat in the airflow can be transferred to the medium inside the heat recovery circulation pipe 10 to recover the heat energy. Then, the medium is driven by the circulation pump 12 to flow inside the heat recovery circulation pipe 10 and the coil 11, which can achieve the purpose of preheating the air entering the air supply pipe 8, thereby improving the air heating effect of the heat pump unit 2 and achieving the purpose of saving energy.

[0034] A drying box 15 is detachably installed at the air inlet end of the fan 14 via a thread, and the interior of the drying box 15 is filled with silica gel desiccant.

[0035] By setting up the drying box 15, moisture in the outside air can be adsorbed, thereby ensuring the drying efficiency of the airflow on the material inside the drying tank 3 and ensuring that the material is thoroughly dried.

[0036] A sealing rubber ring 16 is provided at the bottom of the cover 4, a handle is fixedly installed on the upper surface of the cover 4, and a hygrometer 17 is embedded in the surface of the cover 4.

[0037] By setting the sealing rubber ring 16, the sealing effect of the cover 4 on the drying tank 3 can be ensured. By setting the hygrometer 17, the humidity inside the drying tank 3 can be detected, which makes it convenient for staff to understand the progress of the drying work.

[0038] A stirring motor 18 is fixedly installed at the bottom of the drying tank 3. The output shaft of the stirring motor 18 extends into the interior of the drying tank 3 and is fixedly installed with a stirring paddle 19.

[0039] Furthermore, by setting up the stirring motor 18 and the stirring paddle 19, the material inside the drying tank 3 can be stirred to ensure the uniformity of drying and to promote the flow of air in the gaps between the materials.

[0040] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A heat pump dryer with heat pipe heat recovery device, comprising a base (1), characterized in that: The upper surface of the base (1) is respectively fixedly installed with a heat pump unit (2) and a drying groove (3), the top of the drying groove (3) is provided with a cover (4), the side wall of the drying groove (3) is respectively provided with an air inlet (5) and an air outlet (6), and the air outlet (6) is located above the air inlet (5), the outer wall of the drying groove (3) is provided with a ring cover (7) corresponding to the air inlet (5), the surface of the heat pump unit (2) is provided with a supply air pipe (8), the air outlet end of the supply air pipe (8) is communicated with the ring cover (7), the outer wall of the drying groove (3) is provided with a ring-shaped baffle cover (9) corresponding to the air outlet (6), the bottom end of the ring-shaped baffle cover (9) is of an open structure, the inner top wall of the ring-shaped baffle cover (9) is fixedly installed with a heat recovery circulating pipe (10), the bottom end of the heat recovery circulating pipe (10) extends into the supply air pipe (8) and is fixedly communicated with a coil pipe (11), the coil pipe (11) is close to the air inlet end of the supply air pipe, and the surface of the heat recovery circulating pipe (10) is provided with a circulating pump (12).

2. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The number of the air inlets (5) and the air outlets (6) is several, and the several air inlets (5) and the several air outlets (6) are arranged at equal intervals in a circumferential array on the surface of the drying groove (3), and the inner walls of the air inlets (5) and the air outlets (6) are embedded with intercepting nets (13).

3. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The heat pump unit (2) comprises a shell (201), an evaporator (202) is fixedly installed at the lower left of the shell (201), a condenser (203) is arranged at the middle section of the supply air pipe (8), the evaporator (202) and the condenser (203) are communicated through a medium circulating pipe (204), and a compressor (205) is arranged at the middle section of the medium circulating pipe (204) and fixedly installed at the inner bottom of the shell (201).

4. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The air inlet end of the supply air pipe (8) is fixedly installed with a fan (14), and the air outlet end of the fan (14) faces the inside of the supply air pipe (8).

5. A heat pump dryer with heat pipe heat recovery device as claimed in claim 4 wherein: The air inlet end of the fan (14) is detachably installed with a drying box (15) through threads, and the inside of the drying box (15) is filled with silica gel desiccant.

6. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The bottom end of the cover (4) is provided with a sealing rubber ring (16), the upper surface of the cover (4) is fixedly installed with a handle, and the surface of the cover (4) is embedded with a hygrometer (17).

7. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The bottom end of the drying groove (3) is fixedly installed with a stirring motor (18), and the output shaft of the stirring motor (18) extends into the inside of the drying groove (3) and is fixedly installed with a stirring paddle (19).

8. A heat pump dryer with heat pipe heat recovery device as claimed in claim 1 wherein: The outer wall of the drying groove (3) is provided with a control panel (20), and the control panel (20) is electrically communicated with an external power supply through wires.

Images