A nut roaster using an air source heat pump and an operating method thereof

Abstract

The present application relates to the field of agricultural product drying, and discloses a nut roaster using an air source heat pump, which comprises a cabinet, a fresh air flow port is formed in the left side of the upper surface of the cabinet, a return air flow port is formed in the right side of the upper surface of the cabinet, an outdoor fan is fixedly installed on the left side of the cabinet, a supply air port is integrally formed on the right side of the cabinet, an indoor fan is fixedly installed in the supply air port, a heat exchanger is fixedly installed in the cabinet, a dehumidifying fan is fixedly installed at the output end of the heat exchanger, and an outdoor heat exchanger is fixedly installed on the right side of the outdoor fan in the cabinet. The present application can replace professional roasters, save labor and time, and save energy, and can ensure the quality of dried walnuts and Australian nuts, provide guarantee conditions for standardized mass production, and empower farmers, agricultural and sideline product processing industries, and quality improvement and efficiency increase.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural product drying, and more particularly to a nut roaster using an air source heat pump and an operating method thereof. BACKGROUND

[0002] In the drying process of agricultural and food products, in order to remove the moisture in the material within a specified time range, it is necessary to have a means and device for passing the heated air flow through the material to be dried and removing the moisture contained in the material to realize the drying of the material; the chemical composition of macadamia nuts is studied, it is found that the moisture content of fresh kernels is high, the reducing sugar content is also high, the quality of roasted products is poor, the reducing sugar content of the middle part of the kernels is higher than that of the outside, the center of the kernels will become dark brown during roasting, the high-moisture nuts have high initial temperature, the reducing sugar content also increases, and at the same time, the initial temperature is relatively high, the kernel shell and kernel are easy to break, the kernel oil is oxidized, and the kernel is deteriorated, at present, the dehydration and drying of macadamia nuts generally adopts electric direct heating type, air energy heat pump and other modes.

[0003] The existing nut roaster has poor roasting effect, cannot effectively exchange the indoor humid hot air, thereby causing poor roasting effect of nuts, and cannot recycle indoor heat, and the electric auxiliary heating device in the nut roaster has poor auxiliary heating effect, which needs to be improved, therefore, the present application provides a nut roaster using an air source heat pump and an operating method thereof. SUMMARY

[0004] The present application mainly solves the technical problem of providing a nut roaster using an air source heat pump and an operating method thereof, which can solve the problems of the existing nut roaster, such as poor roasting effect, inability to effectively exchange indoor humid hot air, thereby causing poor roasting effect of nuts, and inability to recycle indoor heat, and poor auxiliary heating effect of the electric auxiliary heating device in the nut roaster.

[0005] In order to solve the above technical problems, according to one aspect of the present application, more particularly to a nut roaster using an air source heat pump, comprising a cabinet, a new air flow port is formed on the upper surface of the left side of the cabinet, a return air flow port is formed on the upper surface of the right side of the cabinet, an outdoor fan is fixedly installed on the left side of the cabinet, a supply air port is integrally formed on the right side of the cabinet, an indoor fan is fixedly installed in the inside of the supply air port, a heat exchanger is fixedly installed in the inside of the cabinet, a dehumidification fan is fixedly installed at the output end of the heat exchanger, an outdoor heat exchanger is fixedly installed in the inside of the cabinet and located on the right side of the outdoor fan, an indoor exchanger is fixedly installed in the inside of the cabinet and close to the supply air port, an electric auxiliary heating mechanism is fixedly installed at the output end of the indoor exchanger, and a new air valve is fixedly installed on the top of the new air flow port.

[0006] Further, the electric auxiliary heating mechanism comprises an auxiliary heating box, which is a hollow cuboid structure with openings on both left and right sides, the inner front surface and the inner rear surface of the auxiliary heating box are slidably connected with two mounting strips, the inner sides of the two mounting strips opposite to each other are provided with mounting grooves, the mounting grooves are clamped with a plurality of positioning mechanisms, the opposite sides of the two positioning mechanisms opposite to each other are rotatably connected with rotating circular blocks through rotating shafts, the opposite sides of the two rotating circular blocks opposite to each other are fixedly connected with an electric heating pipe, the upper surfaces of the mounting strips are provided with a plurality of positioning holes, and the two mounting strips opposite to each other are fixedly connected with a connecting strip one.

[0007] Further, the rear surface of the auxiliary heating box is fixedly connected with a motor, the front end of the output shaft of the motor penetrates into the inside of the auxiliary heating box and is fixedly connected with a cam, the outer side wall of the cam is fixedly connected with the opposite sides of the two mounting strips located behind the auxiliary heating box, and the inner upper surface and the inner lower surface of the auxiliary heating box are fixedly connected with a plurality of springs one on the opposite sides of the two mounting strips opposite to each other.

[0008] Further, the positioning mechanism comprises a sliding block, the inside of the sliding block is slidably connected with a piston block, the piston block and the sliding block are fixedly connected with a spring two, the upper surface of the piston block is fixedly connected with a positioning block, and the lower surface of the sliding block is provided with a through-type exhaust hole.

[0009] Further, the front surface of the mounting strip is provided with a through-type through groove, the inside of the through groove is fixedly connected with a sealing strip, the inside upper surface and the inside lower surface of the through groove are provided with a plurality of through-type butt joints one, the upper surface of the sealing strip is provided with a plurality of through-type butt joints two, the number of the exhaust hole, the butt joint one and the butt joint two is the same and one-to-one correspondence, the inside of the through groove is fixedly connected with a fixed block on the right side of the sealing strip, and the fixed block and the sealing strip are fixedly connected with a spring three.

[0010] Further, the left side of the auxiliary heating box is detachably mounted with a filter screen through bolts, and the right side of the filter screen is in contact with the left ends of a plurality of sealing strips.

[0011] Further, the outer side wall of the rotating circular block located on the right side of the electric heating pipe is integrally formed with a tooth pattern.

[0012] Further, the rear surface of the mounting strip behind the auxiliary heating box is fixedly connected with a limiting strip, the outer side wall of the limiting strip is slidably connected with a limiting frame, a spring four is fixedly connected between the limiting strip and the limiting frame, a connecting strip two is fixedly connected between the two limiting frames opposite to each other, a wedge-shaped resisting block is fixedly connected to the right side of the limiting frame behind the inside of the auxiliary heating box, a connecting piece is fixedly connected to the top of the limiting frame on the upper surface of the mounting strip, a rack is fixedly connected to the side of the connecting piece away from the limiting frame, and the rack is in meshing connection with the toothed groove.

[0013] Further, the inside upper surface of the auxiliary heating box is fixedly connected with a wedge-shaped resisting strip, and the wedge-shaped resisting strip is in contact with the opposite side of the wedge-shaped resisting block.

[0014] According to another aspect of the present application, a method for operating a nut roaster using an air source heat pump is provided, comprising the following steps:

[0015] S1, taking 5 tons of fresh walnut or macadamia nuts into the roasting room;

[0016] S2, evenly distributing 5 tons of fresh walnut or macadamia nuts in the roasting room volume of 33m³;

[0017] S3, adjusting the roasting equipment so that the heating capacity is 33.2kW, the refrigerating capacity is 25kW, the air volume is 30000m³ / h, and the air pressure is 350Pa;

[0018] S4, roasting for 39 hours, taking out 5 tons of fresh walnut or macadamia nuts, and completing the roasting.

[0019] The nut roaster using an air source heat pump has the following advantages:

[0020] The present application can replace professional roasters, save time and effort, and ensure the quality of dried walnuts and macadamia nuts, providing a guarantee for standardized mass production, enabling farmers to become rich, and improving the quality and efficiency of agricultural and sideline product processing industry;

[0021] The air supply port and the return air flow port are arranged to connect with the roasting room to form a circulating air path, which can circulate the indoor air and reduce the loss during air heating, and effectively discharge the moisture in the air, so that the nut drying efficiency is higher and the effect is better.

[0022] The mounting strip and the positioning mechanism are arranged to facilitate the disassembly and installation of the electric heating pipe, so that the damaged electric heating pipe can be replaced and maintained, and the surface of the electric heating pipe can be cleaned more conveniently, avoiding the problem of poor heating effect caused by too much dirt adhering to the surface of the electric heating pipe.

[0023] Through the motor and the cam, the two groups of electric heating pipes can be controlled to move up and down repeatedly, so that the heating range is increased, the air heating range introduced into the auxiliary heating box is more comprehensive, and the air heating effect is better.

[0024] Through the rotating circular block and the rack, the electric heating pipe can be repeatedly turned over during the up-and-down movement, so that the temperature of the air contact surface is stable, the air heating is better, and the energy consumption is increased when the air is heated by a single side. BRIEF DESCRIPTION OF DRAWINGS

[0025] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0026] Figure 1 It is a whole structure schematic diagram of the nut roaster using the air source heat pump of the application;

[0027] Figure 2 It is a sectional structure schematic diagram of the nut roaster using the air source heat pump of the application;

[0028] Figure 3 It is a side structure schematic diagram of the electric auxiliary heating mechanism of the nut roaster using the air source heat pump of the application;

[0029] Figure 4 It is an internal mechanism schematic diagram of the electric auxiliary heating mechanism of the nut roaster using the air source heat pump of the application;

[0030] Figure 5 It is a structure schematic diagram of the nut roaster using the air source heat pump of the application; Figure 4 The connecting structure schematic diagram of the electric heating pipe and the rotating circular block;

[0031] Figure 6 It is a sectional structure schematic diagram of the positioning mechanism of the nut roaster using the air source heat pump of the application; Figure 4

[0032] Figure 7 It is a structure schematic diagram of the mounting strip of the nut roaster using the air source heat pump of the application; Figure 4

[0033] Figure 8 It is a connecting structure schematic diagram of the sealing strip and the fixed block of the nut roaster using the air source heat pump of the application; Figure 7

[0034] Figure 9 It is an enlarged structure schematic diagram of A of the nut roaster using the air source heat pump of the application; Figure 4

[0035] ​​​​Figure 10 Figure is a schematic diagram of the baking temperature and humidity curve of the nut roaster using air source heat pump of the present application.

[0036] In the figure: 1, the case; 2, the electric auxiliary heating mechanism; 3, the return air flow port; 4, the outdoor fan; 5, the air supply port; 6, the indoor fan; 7, the heat exchanger; 8, the dehumidification fan; 9, the outdoor heat exchanger; 10, the indoor exchanger; 11, the fresh air flow port; 12, the auxiliary heating box; 13, the mounting strip; 14, the mounting groove; 15, the positioning mechanism; 16, the rotating round block; 17, the electric heating pipe; 18, the positioning hole; 19, the connecting strip one; 20, the motor; 21, the cam; 22, the spring one; 23, the sliding block; 24, the piston block; 25, the spring two; 26, the positioning block; 27, the exhaust hole; 28, the through groove; 29, the sealing strip; 30, the butt joint hole one; 31, the butt joint hole two; 32, the fixed block; 33, the spring three; 34, the filter screen; 35, the toothed pattern; 36, the limiting strip; 37, the limiting frame; 38, the spring four; 39, the connecting strip two; 40, the wedge-shaped resistance block; 41, the connecting piece; 42, the rack; 43, the wedge-shaped resistance strip; 44, the fresh air valve. DETAILED DESCRIPTION

[0037] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0038] According to one aspect of the present application, as shown in Figures 1-9 A nut roaster using air source heat pump is provided, which comprises a case 1, a fresh air flow port 11 is formed on the left side of the upper surface of the case 1, a return air flow port 3 is formed on the right side of the upper surface of the case 1, an outdoor fan 4 is fixedly installed on the left side of the case 1, an air supply port 5 is integrally formed on the right side of the case 1, an indoor fan 6 is fixedly installed in the air supply port 5, a heat exchanger 7 is fixedly installed in the case 1, a dehumidification fan 8 is fixedly installed at the output end of the heat exchanger 7, an outdoor heat exchanger 9 is fixedly installed on the right side of the outdoor fan 4 in the case 1, an indoor exchanger 10 is fixedly installed near the air supply port 5 in the case 1, an electric auxiliary heating mechanism 2 is fixedly installed at the output end of the indoor exchanger 10, and a fresh air valve 44 is fixedly installed at the top of the fresh air flow port 11.

[0039] When the present application is used, the air supply port 5 and the return air flow port 3 at the top of the cabinet 1 are connected with the drying room to form a circulating air path. When working, the indoor fan 6 is started and is always on. The circulating air is sucked from the return air flow port, passes through the indoor exchanger 10 and the electric auxiliary heating mechanism 2 and is sent into the drying room. When dehumidification is needed, the dehumidification fan 8 and the fresh air valve 44 are opened at the same time to generate negative pressure in the drying room. The fresh air flow is sucked from the fresh air flow port 11, is heated after passing through the indoor exchanger 10, is mixed with the return air flow, is heated or adjusted in temperature after passing through the indoor exchanger 10 and the electric auxiliary heating mechanism 2 and is sent into the drying room. At the same time, part of the humid air is blown to the outdoor heat exchanger 9 again after being heated by the return air flow in the dehumidification fan 8, so that the purpose of full energy saving is achieved and the drying efficiency is further improved.

[0040] In the embodiment, the electric auxiliary heating mechanism 2 comprises an auxiliary heating box 12. The auxiliary heating box 12 is a hollow rectangular box structure with openings on the left and right sides. The inner front surface and the inner rear surface of the auxiliary heating box 12 are slidably connected with two mounting strips 13. The inner sides of the two mounting strips 13 opposite to each other are provided with mounting grooves 14. The mounting grooves 14 are internally fitted with a plurality of positioning mechanisms 15. The opposite sides of the two positioning mechanisms 15 opposite to each other are rotatably connected with rotating round blocks 16 through rotating shafts. The opposite sides of the two rotating round blocks 16 opposite to each other are fixedly connected with an electric heating pipe 17. The upper surfaces of the mounting strips 13 are provided with a plurality of positioning holes 18. The two mounting strips 13 opposite to each other are fixedly connected with a connecting strip 19.

[0041] The air introduced by the indoor fan 6 enters from the left side of the auxiliary heating box 12 and is discharged from the right side. The electric heating pipe 17 is connected with the outside and is powered on to heat the air. The electric heating pipe 17 can be inserted into the inner side of the mounting groove 14 of the mounting strip 13 through the positioning mechanisms 15 at both ends, and then is positioned and installed in cooperation with the positioning holes 18. The electric heating pipe 17 is rotatably connected with the positioning mechanisms 15 through the rotating round blocks 16, so that the electric heating pipe 17 can be rotated and turned over. The mounting strips 13 on the same side are connected through the connecting strip 19, so that the electric heating pipe 17 can be installed, and the plurality of mounting strips 13 on the two sides can slide upward or downward along the inner side of the auxiliary heating box 12.

[0042] In the embodiment, the rear surface of the auxiliary heating box 12 is fixedly connected with a motor 20. The front end of the output shaft of the motor 20 penetrates into the interior of the auxiliary heating box 12 and is fixedly connected with a cam 21. The outer side wall of the cam 21 is fixedly connected with the opposite sides of the two mounting strips 13 located behind the auxiliary heating box 12. The inner upper surface and the inner lower surface of the auxiliary heating box 12 are fixedly connected with a plurality of springs 22 on the opposite sides of the two mounting strips 13 opposite to each other.

[0043] The motor 20 drives the cam 21 to rotate, thereby pushing the mounting strip 13 to move up and down repeatedly, and the spring 22 buffers the up-and-down movement of the mounting strip 13.

[0044] In the embodiment, the positioning mechanism 15 comprises a sliding block 23, the inside of the sliding block 23 is slidably connected with a piston block 24, the piston block 24 and the sliding block 23 are fixedly connected with a spring 25, the upper surface of the piston block 24 is fixedly connected with a positioning block 26, and the lower surface of the sliding block 23 is provided with a through-type exhaust hole 27.

[0045] The positioning block 26 is in a circular table shape, so that when the sliding block 23 is inserted into the inside of the mounting groove 14, the positioning block 26 is extruded to push the piston block 24 downward, and then the piston block 24 is retracted into the sliding block 23, the piston block 24 is extruded to retract the spring 25 when the piston block 24 is downward, and at this time, the exhaust hole 27 is used for exhausting, when the sliding block 23 slides to the positioning hole 18, the positioning block 26 is inserted into the positioning hole 18 to be positioned under the pushing of the spring 25.

[0046] In the embodiment, the front surface of the mounting strip 13 is provided with a through-type through groove 28, the inside of the through groove 28 is fixedly connected with a sealing strip 29, the inside upper surface and the inside lower surface of the through groove 28 are provided with a plurality of through-type butt joints one 30, the upper surface of the sealing strip 29 is provided with a plurality of through-type butt joints two 31, the number of the exhaust hole 27, the butt joint one 30 and the butt joint two 31 is the same, and one-to-one correspondence, the inside of the through groove 28 is fixedly connected with a fixed block 32 on the right side of the sealing strip 29, and the fixed block 32 and the sealing strip 29 are fixedly connected with a spring three 33.

[0047] The plurality of butt joints one 30 are communicated with the plurality of exhaust holes 27, in the normal state, the butt joint two 31 is also connected with the butt joint one 30, at this time, the exhaust hole 27 can exhaust, so that the positioning block 26 can retract, so that the sliding block 23 can slide along the mounting groove 14, so that the electric heating pipe 17 can be disassembled and replaced, the sealing strip 29 can slide along the through groove 28, when the sealing strip 29 slides to the fixed block 32 and extrudes the spring three 33 to retract, the butt joint one 30 and the butt joint two 31 are misaligned, at this time, the exhaust hole 27 is blocked, after the positioning block 26 is positioned in the positioning hole 18, it will not retract, which can ensure the stability of the electric heating pipe 17 installed in the auxiliary heating box 12.

[0048] In the embodiment, the left side of the auxiliary heating box 12 is detachably installed with a filter screen 34 through bolts, the right side of the filter screen 34 is in contact with the left end of the plurality of sealing strips 29.

[0049] The filter screen 34 filters dust in the air, and after the filter screen 34 abuts against the sealing strip 29, the sealing strip 29 slides along the through groove 28, so that the butt joint one 30 and the butt joint two 31 are misaligned.

[0050] In the embodiment, the outer side wall of the rotating circular block 16 on the right side of the electric heating pipe 17 is integrally formed with a tooth pattern 35, the rear surface of the mounting strip 13 on the rear side of the auxiliary heating box 12 is fixedly connected with a limiting strip 36, the outer side wall of the limiting strip 36 is slidably connected with a limiting frame 37, a spring four 38 is fixedly connected between the limiting strip 36 and the limiting frame 37, a connecting strip two 39 is fixedly connected between the two limiting frames 37 opposite to each other, a wedge-shaped resisting block 40 is fixedly connected to the right side of the limiting frame 37 on the rear side inside the auxiliary heating box 12, a connecting piece 41 is fixedly connected to the top of the limiting frame 37 on the upper surface of the mounting strip 13, a rack 42 is fixedly connected to the side of the connecting piece 41 away from the limiting frame 37, the rack 42 is meshingly connected with the tooth pattern 35, a wedge-shaped resisting strip 43 is fixedly connected to the inner upper surface of the auxiliary heating box 12, and the opposite side of the wedge-shaped resisting strip 43 is in contact with the wedge-shaped resisting block 40;

[0051] In the embodiment, when the motor 20 starts to drive the electric heating pipe 17 to repeatedly move downward, the wedge-shaped resisting strip 43 can repeatedly extrude and push the wedge-shaped resisting block 40, so as to drive the rack 42 to repeatedly move left and right, so as to push the electric heating pipe 17 to rotate back and forth through the tooth pattern 35 on the rotating circular block 16, so that the electric heating pipe 17 can heat the air introduced into the inside of the auxiliary heating box 12, and the turning can ensure better heating effect on the air, thereby ensuring the air temperature.

[0052] According to another aspect of the present application, a method for operating a nut roaster using an air source heat pump is provided, comprising the following steps:

[0053] S1, taking 5 tons of fresh walnut fruit or Australian nuts into the roasting room;

[0054] S2, evenly distributing the 5 tons of fresh walnut fruit or Australian nuts in the roasting room volume of 33 m³;

[0055] S3, adjusting the roasting equipment, so that the heating capacity is 33.2 kW, the refrigerating capacity is 25 kW, the air volume is 30000 m³ / h, and the air pressure is 350 Pa;

[0056] S4, roasting for 39 hours, taking out 5 tons of fresh walnut fruit or Australian nuts, and completing the roasting.

[0057] The working principle of the device is: when the device is used, the air supply port 5 and the return air flow port 3 at the top of the case 1 are connected with the baking house to form a circulating air path; when working, first start the indoor fan 6 and keep it in the open state; the circulating air is sucked from the return air flow port, passes through the indoor exchanger 10 and the electric auxiliary heating mechanism 2, and is sent into the baking house; when it is necessary to exhaust the moisture, the exhaust fan 8 and the fresh air valve 44 are opened at the same time to produce negative pressure in the baking house; the fresh air flow is sucked from the fresh air flow port 11, absorbs heat after passing through the indoor exchanger 10, and is mixed with the return air flow, then is sent into the baking house after being heated or temperature-regulated by the indoor exchanger 10 and the electric auxiliary heating mechanism 2; at the same time, part of the humid air is blown to the outdoor heat exchanger 9 again after being heated by the return air port indoor exchanger 10 and the fresh air, so as to realize the purpose of full energy saving and further improve the drying efficiency.

[0058] Wherein the electric elements appearing in the text are all the existing electric elements.

[0059] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples; the changes, modifications, additions or replacements made by the ordinary skilled in the art within the essential scope of the present application also belong to the protection scope of the present application.

Claims

1. A nut roaster using an air source heat pump, comprising a cabinet (1), characterized in that: The upper surface left side of the case (1) is provided with a new air flow port (11), the upper surface right side of the case (1) is provided with a return air flow port (3), the left side of the case (1) is fixedly installed with an outdoor fan (4), the right side of the case (1) is integrally formed with a air supply port (5), the inside of the air supply port (5) is fixedly installed with an indoor fan (6), the inside of the case (1) is fixedly installed with a heat exchanger (7), the output end of the heat exchanger (7) is fixedly installed with a dehumidification fan (8), the inside of the case (1) is fixedly installed with an outdoor heat exchanger (9) on the right side of the outdoor fan (4), the inside of the case (1) is fixedly installed with an indoor exchanger (10) close to the air supply port (5), the output end of the indoor exchanger (10) is fixedly installed with an electric auxiliary heating mechanism (2), the top of the new air flow port (11) is fixedly installed with a new air valve (44); The electric auxiliary heating mechanism (2) comprises an auxiliary heating box (12), the auxiliary heating box (12) is a hollow cuboid structure with openings on the left and right sides, the inside front surface and the inside rear surface of the auxiliary heating box (12) are slidably connected with two installation strips (13), the inner sides of the two installation strips (13) opposite to each other are provided with installation grooves (14), the inside of the installation groove (14) is clamped with a plurality of positioning mechanisms (15), the opposite sides of the two positioning mechanisms (15) opposite to each other are rotatably connected with rotating circular blocks (16) through rotating shafts, the opposite sides of the two rotating circular blocks (16) opposite to each other are commonly fixedly connected with an electric heating pipe (17), the upper surface of the installation strip (13) is provided with a plurality of positioning holes (18), and the two installation strips (13) opposite to each other are commonly fixedly connected with a connecting strip one (19); The rear surface of the auxiliary heating box (12) is fixedly connected with a motor (20), the output shaft front end of the motor (20) penetrates into the inside of the auxiliary heating box (12) and is fixedly connected with a cam (21), the outer side wall of the cam (21) is fixedly connected with the opposite sides of the two installation strips (13) located behind the auxiliary heating box (12), and the inside upper surface and the inside lower surface of the auxiliary heating box (12) are fixedly connected with a plurality of springs one (22) on the opposite sides of the two installation strips (13) opposite to each other; The positioning mechanism (15) comprises a sliding block (23), the inside of the sliding block (23) is slidably connected with a piston block (24), the piston block (24) and the sliding block (23) are commonly fixedly connected with a spring two (25), the upper surface of the piston block (24) is fixedly connected with a positioning block (26), and the lower surface of the sliding block (23) is provided with a penetrating exhaust hole (27). The front surface of the mounting strip (13) is provided with a through-type through groove (28), the inside of the through groove (28) is fixedly connected with a sealing strip (29), the inside upper surface and the inside lower surface of the through groove (28) are both provided with a plurality of through-type butt joints one (30), the upper surface of the sealing strip (29) is provided with a plurality of through-type butt joints two (31), the number of the air vent (27), the butt joint one (30) and the butt joint two (31) is same, and one-to-one correspondence, the inside of the through groove (28) is fixedly connected with a fixed block (32) on the right side of the sealing strip (29), the fixed block (32) and the sealing strip (29) are fixedly connected with a spring three (33).

2. A nut roaster utilizing an air source heat pump according to claim 1, characterized in that: The left side of the auxiliary heating box (12) is detachably connected with a filter screen (34) through bolts, and the right side of the filter screen (34) is in contact with the left ends of the plurality of sealing strips (29).

3. A nut roaster utilizing an air source heat pump according to claim 1, characterized in that: The outer side wall of the rotating circular block (16) located on the right side of the electric heating pipe (17) is integrally formed with a tooth pattern (35).

4. A nut roaster utilising an air source heat pump according to claim 3, characterised in that: The rear surface of the mounting strip (13) located behind the auxiliary heating box (12) is fixedly connected with a limiting strip (36), the outer side wall of the limiting strip (36) is slidably connected with a limiting frame (37), the limiting strip (36) and the limiting frame (37) are fixedly connected with a spring four (38), the limiting frame (37) is fixedly connected with a connecting strip two (39) between the two limiting frames (37) opposite to each other, the right side of the limiting frame (37) located inside the auxiliary heating box (12) is fixedly connected with a wedge-shaped resisting block (40), the top of the limiting frame (37) is fixedly connected with a connecting piece (41) on the upper surface of the mounting strip (13), the side of the connecting piece (41) away from the limiting frame (37) is fixedly connected with a rack (42), and the rack (42) is in meshing connection with the tooth pattern (35).

5. A nut roaster utilising an air source heat pump as claimed in claim 4 wherein: The inside upper surface of the auxiliary heating box (12) is fixedly connected with a wedge-shaped resisting strip (43), and the opposite side of the wedge-shaped resisting strip (43) is in contact with the wedge-shaped resisting block (40).

6. A method for operating a nut roaster using an air source heat pump, comprising the nut roaster using an air source heat pump according to any one of claims 1-5, wherein, The method comprises the following steps: S1, take 5 tons of fresh walnut fruit or macadamia nut into the baking room; S2, evenly distribute 5 tons of fresh walnut fruit or macadamia nut in the baking room volume of 33m³; S3, adjust the baking equipment, so that the heating capacity is 33.2kW, the refrigerating capacity is 25kW, the air volume is 30000m³ / h, and the air pressure is 350Pa; S4, bake for 39 hours, take out 5 tons of fresh walnut fruit or macadamia nut, and complete the baking.

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