A defrosting device for cold storage cold air blower

Abstract

The present invention relates to the technical field of defrosting devices, and discloses a defrosting device for a cold storage air cooler, comprising a shell and a heat exchanger fixedly mounted on the inner wall of the shell, an air inlet pipe fixedly mounted on the back of the shell, the air inlet pipe is communicated with the interior of the shell, and a mounting plate is fixedly mounted on the inner wall of the air inlet pipe. The friction between the rubber wheel and the contact head of the present invention generates heat, and the heat is transferred to the interior of the heat dissipation column through the heat conduction block, the baffle and the heat conduction rod. The heat dissipation column heats the box body and the quartz sand particles filled therein. The temperature of the box body rises, and the speed of the driving motor is reduced, so that the sleeve slides back and forth along the outer surface of the fan blade, so that the box body melts the frost on the surface of the fan blade through the surface temperature. The frost on the surface of the fan blade of the air cooler can be melted by this device, and the frosting of the fan blade is prevented from affecting the normal flow of air, thereby ensuring the refrigeration effect of the air cooler.

Description

Technical Field

[0001] The present invention relates to the technical field of defrosting devices, and in particular to a defrosting device for a cold storage cold air blower. Background Art

[0002] Cold storage is the main equipment for storing fruits and vegetables after picking. At present, most of the cooling equipment in fruit and vegetable cold storage rooms is in the form of air coolers. In addition to low temperature, in order to reduce the dry loss of refrigerated agricultural and sideline products, the cold storage is also required to maintain a relatively high air humidity. However, this "low temperature and high humidity" environment happens to make the cold storage air cooler operate in a condition that is more prone to frost.

[0003] The existing pressure differential defrosting device for the evaporator in the cold air blower of the cold storage (Announcement No.: CN102997567A) has at least the following disadvantages:

[0004] When the above patent is in use, the air heated by the electric heater circulates only around the evaporator in the air cooler and in the static pressure box to remove frost on the surface of the condenser. Since the air cooler operates in a relatively high humidity environment, when the outside temperature is below zero in winter, the fan of the air cooler will frost when it is working. The above patent does not have a device for removing frost from the surface of the fan. After the fan is frosted, a layer of frost will form, which will hinder the normal flow of air and reduce the amount of air flow. Because the cold air cannot circulate effectively in the space, the cooling effect is reduced. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cold storage air cooler defrosting device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A defrosting device for a cold storage air cooler comprises a shell and a heat exchanger fixedly mounted on the inner wall of the shell, wherein an air inlet pipe is fixedly mounted on the back side of the shell, the air inlet pipe is communicated with the interior of the shell, a mounting plate is fixedly mounted on the inner wall of the air inlet pipe, a fan is rotatably mounted on the outer surface of the mounting plate close to the heat exchanger, a plurality of fan blades are arranged on the outer surface of the fan, a plurality of fan blades are sleeved on the outer surfaces of the plurality of fan blades, the sliding sleeves are slidably mounted on the outer surfaces of the fan blades, two openings are symmetrically provided on the outer surfaces of the sliding sleeves on opposite sides, a box body is slidably mounted between the inner walls at opposite ends of the two openings, two limiting grooves are symmetrically provided on the inner walls at opposite ends of the openings, the two limiting grooves are inclinedly arranged, guide rails are provided on the outer surfaces of the opposite ends of the box body, the guide rails are slidably mounted on the inner walls of the limiting grooves, a heat dissipation column is fixedly mounted between the inner walls at opposite ends of the box body, a heat conducting rod is fixedly mounted on the outer surface of the heat dissipation column, one end of the heat conducting rod passes through the outer surface of the box body, and the outer surface of the box body is flush with the outer surfaces of the fan blades.

[0008] As a further solution of the present invention, a partition is slidably installed between the inner walls of the box body, the partition is arranged above the heat dissipation column, quartz sand is filled between the partition and the heat dissipation column, two limit columns are symmetrically fixedly installed on the upper surface of the partition, two through holes are opened on the upper surface of the box body, the two limit columns are slidably installed on the inner walls of the two through holes, the outer surfaces of the two limit columns are both sleeved with a second spring, and the second spring is arranged between the top wall of the box body and the upper surface of the partition.

[0009] As a further solution of the present invention, a fixing ring is provided at the top of the plurality of fan blades, a plurality of mounting grooves are equidistantly provided on the circumferential outer surface of the fixing ring, rubber wheels are rotatably installed on the inner walls at opposite ends of the plurality of mounting grooves, the circumferential outer surface of the rubber wheel abuts against the inner wall of the air inlet pipe, two square sleeves are symmetrically and slidably inserted on the bottom wall of the mounting groove, and a heat conductive block is fixedly installed inside the square sleeve.

[0010] As a further solution of the present invention, the top end of the heat conductive block passes through the top end of the square sleeve and is fixedly installed with a contact head, and the contact head abuts against the outer surface of the rubber wheel; the bottom end of the heat conductive block passes through the bottom end of the square sleeve and is fixedly installed with a baffle, and the lower surface of the baffle abuts against the top end of the heat conductive rod; a plurality of countersunk holes are equidistantly provided on the inner wall of the fixing ring; a first spring is sleeved on the outer surface of the square sleeve, and the first spring is arranged between the top wall of the countersunk hole and the upper surface of the baffle.

[0011] As a further solution of the present invention, a water pipe is fixedly installed inside the shell, and the water pipe is arranged between the fan and the heat exchanger. A plurality of water spray holes are opened on the outer surface of the water pipe close to the heat exchanger. One end of the water pipe passes through the outer surface of the shell and is fixedly installed with a water pipe joint. A water outlet pipe is fixedly installed on the lower surface of the shell, and the water outlet pipe is connected to the interior of the shell.

[0012] As a further solution of the present invention, a drive motor is fixedly installed on the outer surface of the other side of the mounting plate, the output end of the drive motor passes through the outer surface of the mounting plate and is fixedly installed with the rotation center of the fan, and a protective net is fixedly installed on one end of the air inlet duct close to the drive motor.

[0013] As a further solution of the present invention, an air inlet pipe is fixedly installed on the outer surface of one side of the shell, and an air outlet pipe is fixedly installed on the outer surface of one side of the shell. The air inlet pipe is connected to the air inlet end of the heat exchanger, and the air outlet pipe is connected to the air outlet end of the heat exchanger.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The friction between the rubber wheel and the contact head generates heat, which is transferred to the inside of the heat dissipation column through the heat conduction block, baffle and heat conduction rod. The heat dissipation column heats the box body and the quartz sand particles filled inside it. The temperature of the box body rises, and the speed of the driving motor is reduced to make the sliding sleeve slide back and forth along the outer surface of the fan blade, so that the box body melts the frost on the surface of the fan blade through the surface temperature. The device can melt the frost on the surface of the fan blade of the air cooler, avoid the frosting of the fan blade affecting the normal flow of air, and ensure the cooling effect of the air cooler;

[0016] 2. When the quartz sand particles are heated, they will expand and drive the partition to move up. The partition drives the limit column to move up and resist the top wall of the opening. At this time, the heat conduction rod is separated from the baffle, and the contact head is separated from the rubber wheel by the force of the first spring. When the temperature reaches the required value, the contact head is separated from the rubber wheel through this device to avoid damage to the rubber wheel due to overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a cold storage air cooler defrosting device proposed by the present invention;

[0018] Figure 2 This is a rear structural schematic diagram of a cold storage air cooler defrosting device proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of a cold storage air cooler defrosting device proposed by the present invention;

[0020] Figure 4A schematic diagram of a mounting plate of a cold storage air cooler defrosting device proposed by the present invention;

[0021] Figure 5 A schematic diagram of a fan of a cold storage air cooler defrosting device proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of a sliding sleeve of a cold storage air cooler defrosting device proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the internal structure of a sliding sleeve of a cold storage air cooler defrosting device proposed by the present invention;

[0024] Figure 8 A schematic diagram of a limit slot of a cold storage air cooler defrosting device proposed by the present invention;

[0025] Fig. 9 This is a schematic diagram of a box body of a cold storage air cooler defrosting device proposed by the present invention;

[0026] Fig.10 for Figure 5 A partial enlarged schematic diagram is shown in the figure.

[0027] In the figure: 1. shell; 2. heat exchanger; 3. air inlet pipe; 4. air outlet pipe; 5. water pipe; 6. water pipe joint; 7. water spray hole; 8. water outlet pipe; 9. air inlet pipe; 10. protective net; 11. mounting plate; 12. fan; 13. drive motor; 14. sliding sleeve; 15. mounting groove; 16. rubber wheel; 17. square sleeve; 18. contact head; 19. baffle; 20. first spring; 21. countersunk hole; 22. heat conducting rod; 23. box body; 24. heat dissipation column; 25. partition; 26. limit column; 27. second spring; 28. guide rail; 29. ​​limit groove; 30. opening. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1-Figure 10 A cold storage air cooler defrosting device comprises a shell 1 and a heat exchanger 2 fixedly mounted on the inner wall of the shell 1. An air inlet pipe 9 is fixedly mounted on the back of the shell 1. The air inlet pipe 9 is connected to the inside of the shell 1. A mounting plate 11 is fixedly mounted on the inner wall of the air inlet pipe 9. A fan 12 is rotatably mounted on the outer surface of the mounting plate 11 close to the heat exchanger 2. A plurality of blades are arranged on the outer surface of the fan 12. A sliding sleeve 14 is sleeved on the outer surface of each of the plurality of blades. The sliding sleeve 14 is slidably mounted on the outer surface of the blade. Two openings 30 are symmetrically provided on the outer surfaces of the opposite sides of the sliding sleeve 14. A box body 23 is slidably installed between the inner walls at the opposite ends of the two openings 30. Two limit grooves 29 are symmetrically provided on the inner walls at the opposite ends of the openings 30. The two limit grooves 29 are inclined. Guide rails 28 are provided on the outer surfaces of the opposite ends of the box body 23. The guide rails 28 are slidably installed with the inner walls of the limit grooves 29. A heat dissipation column 24 is fixedly installed between the inner walls at the opposite ends of the box body 23. A heat conducting rod 22 is fixedly installed on the outer surface of the heat dissipation column 24. One end of the heat conducting rod 22 passes through the outer surface of the box body 23. The outer surface of the box body 23 is flush with the outer surface of the fan blade. A fixing ring is provided at the top of the fan blade, and a plurality of mounting grooves 15 are equidistantly provided on the circumferential outer surface of the fixing ring. Rubber wheels 16 are rotatably installed on the inner walls of the opposite ends of the plurality of mounting grooves 15. The circumferential outer surface of the rubber wheel 16 abuts against the inner wall of the air inlet pipe 9. Two square sleeves 17 are symmetrically and slidably inserted into the bottom wall of the mounting groove 15. A heat conducting block is fixedly installed inside the square sleeve 17. A contact head 18 is fixedly installed on the top of the heat conducting block through the square sleeve 17. The contact head 18 abuts against the outer surface of the rubber wheel 16. The bottom end of the heat conducting block passes through the square sleeve 17. A baffle 19 is fixedly installed on the bottom end, and the lower surface of the baffle 19 is against the top of the heat-conducting rod 22. A plurality of countersunk holes 21 are equidistantly provided on the inner wall of the fixing ring. A first spring 20 is sleeved on the outer surface of the square sleeve 17, and the first spring 20 is arranged between the top wall of the countersunk hole 21 and the upper surface of the baffle 19. A driving motor 13 is fixedly installed on the outer surface of the other side of the mounting plate 11. The output end of the driving motor 13 passes through the outer surface of the mounting plate 11 and is fixedly installed at the rotation center of the fan 12. A protective net 10 is fixedly installed on one end of the air inlet pipe 9 close to the driving motor 13.

[0032] When in use, the fan 12 is driven to rotate by the driving motor 13, and the fan 12 drives the fixing ring to rotate together through the fan blades, and the fixing ring drives the rubber wheel 16 to move. Since the outer surface of the rubber wheel 16 is against the inner wall of the air inlet pipe 9, the rubber wheel 16 itself will rotate. When the fan 12 rotates to the set speed, due to the action of centrifugal force, the sliding sleeve 14 moves to the end of the fan blade. At this time, the heat-conducting rod 22 will be against the baffle 19. Through the action of centrifugal force, the heat-conducting rod 22 pushes the baffle 19, and the baffle 19 pushes the square sleeve 17 to move upward, so that the square sleeve 17 drives the contact head 18 to be against the outer surface of the rubber wheel 16. The friction between the rubber wheel 16 and the contact head 18 generates heat, and the heat is transmitted through the heat-conducting block and the baffle 1 9 and the heat-conducting rod 22 are transferred to the interior of the heat dissipation column 24, and the heat dissipation column 24 will heat the box body 23 and the quartz sand particles filled therein, and the temperature of the box body 23 will increase. By reducing the rotation speed of the driving motor 13, the sliding sleeve 14 will slide back and forth along the outer surface of the fan blade, so that the box body 23 can melt the frost on the surface of the fan blade through the surface temperature. The frost on the surface of the fan blade of the air cooler can be melted by this device to avoid the frosting of the fan blade affecting the normal flow of air, thereby ensuring the cooling effect of the air cooler; when the sliding sleeve 14 is subjected to centrifugal force, the box body 23 is also subjected to the centrifugal force and moves upward. Since the limiting groove 29 is inclined, the surface of the box body 23 will leave the surface of the fan blade, avoiding the continuous heating of the fan blade and causing the temperature of the box body 23 to not rise.

[0033] In this embodiment, a partition 25 is slidably installed between the inner walls of the box body 23, the partition 25 is arranged above the heat dissipation column 24, and quartz sand is filled between the partition 25 and the heat dissipation column 24. Two limit columns 26 are symmetrically fixedly installed on the upper surface of the partition 25. Two through holes are opened on the upper surface of the box body 23. The two limit columns 26 are slidably installed with the inner walls of the two through holes. The outer surfaces of the two limit columns 26 are both sleeved with second springs 27, and the second springs 27 are arranged between the top wall of the box body 23 and the upper surface of the partition 25.

[0034] When the quartz sand particles are heated, they expand and drive the partition 25 upward. The partition 25 drives the limit column 26 upward to abut against the top wall of the opening 30. At this time, the heat-conducting rod 22 is separated from the baffle 19, and the contact head 18 is separated from the rubber wheel 16 by the force of the first spring 20. When the temperature reaches the required value, the contact head 18 is separated from the rubber wheel 16 by this device to avoid overheating and damage to the rubber wheel 16.

[0035] In this embodiment, a water pipe 5 is fixedly installed inside the shell 1, and the water pipe 5 is arranged between the fan 12 and the heat exchanger 2. A plurality of water spray holes 7 are opened on the outer surface of the water pipe 5 close to the heat exchanger 2. One end of the water pipe 5 passes through the outer surface of the shell 1 and is fixedly installed with a water pipe joint 6. A water outlet pipe 8 is fixedly installed on the lower surface of the shell 1, and the water outlet pipe 8 is connected to the interior of the shell 1. When not in use, the water pipe 5 is connected to an external water pump so that high-pressure water is sprayed from the water spray hole 7 to rinse the surface of the heat exchanger 2 to ensure that its surface is clean.

[0036] In this embodiment, an air inlet pipe 3 is fixedly installed on the outer surface of one side of the shell 1, and an air outlet pipe 4 is fixedly installed on the outer surface of one side of the shell 1. The air inlet pipe 3 is connected to the air inlet end of the heat exchanger 2, and the air outlet pipe 4 is connected to the air outlet end of the heat exchanger 2. The air is quickly cooled by the heat exchanger 2, thereby cooling the cold storage.

[0037] In this embodiment, the heat-conducting rod 22, the baffle 19, the heat-conducting block, the contact head 18 and the heat-dissipating column 24 are all made of pure copper material to ensure their excellent thermal conductivity, and the non-contact surfaces between them are all provided with a thermal insulation coating to ensure that the temperature does not lose quickly.

[0038] It should be noted that when the present invention is in use, the fan 12 is driven to rotate by the driving motor 13, and the fan 12 drives the fixed ring to rotate together through the fan blades, and the fixed ring drives the rubber wheel 16 to move. Since the outer surface of the rubber wheel 16 is against the inner wall of the air inlet pipe 9, the rubber wheel 16 itself will rotate. When the fan 12 rotates to the set speed, due to the action of centrifugal force, the sliding sleeve 14 moves to the end of the fan blade. At this time, the heat-conducting rod 22 will be against the baffle 19. Through the action of centrifugal force, the heat-conducting rod 22 pushes the baffle 19, and the baffle 19 pushes the square sleeve 17 to move upward, so that the square sleeve 17 drives the contact head 18 to be against the outer surface of the rubber wheel 16. The friction between the rubber wheel 16 and the contact head 18 generates heat, and the heat is transferred to the interior of the heat dissipation column 24 through the heat-conducting block, the baffle 19 and the heat-conducting rod 22. The heat dissipation column 24 will heat the box body 23 and the quartz sand particles filled therein. The temperature of the box body 23 increases, and by reducing the driving motor The rotation speed of the machine 13 causes the sliding sleeve 14 to slide back and forth along the outer surface of the fan blade, so that the box body 23 melts the frost on the surface of the fan blade through the surface temperature. The frost on the surface of the fan blade of the air cooler can be melted by this device to prevent the frost on the fan blade from affecting the normal flow of air, thereby ensuring the refrigeration effect of the air cooler. When the sliding sleeve 14 is subjected to centrifugal force, the box body 23 is also moved upward by the centrifugal force. Since the limiting groove 29 is inclined, the surface of the box body 23 will leave the surface of the fan blade, thereby preventing the fan blade from being heated all the time and causing the temperature of the box body 23 to not rise. When the quartz sand particles are heated, they will expand and drive the partition 25 to move upward. The partition 25 drives the limiting column 26 to move upward and resist against the top wall of the opening 30. At this time, the heat conducting rod 22 is separated from the baffle 19, and the contact head 18 is separated from the rubber wheel 16 by the force of the first spring 20. When the temperature reaches the required value, the contact head 18 is separated from the rubber wheel 16 by this device to prevent the rubber wheel 16 from being damaged by overheating.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cold storage air cooler defrosting device, comprising a housing (1) and a heat exchanger (2) fixedly mounted on the inner wall of the housing (1), characterized in that: An air inlet pipe (9) is fixedly mounted on the back of the shell (1), the air inlet pipe (9) being in communication with the interior of the shell (1), a mounting plate (11) being fixedly mounted on the inner wall of the air inlet pipe (9), a fan (12) being rotatably mounted on the outer surface of the mounting plate (11) on a side close to the heat exchanger (2), a plurality of blades being arranged on the outer surface of the fan (12), a sliding sleeve (14) being slidably mounted on the outer surfaces of the blades, two openings (30) being symmetrically arranged on the outer surfaces of the sliding sleeve (14) on opposite sides, a box body (23) being slidably mounted between the inner walls at opposite ends of the two openings (30), and two inner walls at opposite ends of the opening (30) being symmetrically arranged on the inner walls The limiting groove (29) is arranged at an angle. The outer surfaces of the two opposite ends of the box body (23) are provided with guide rails (28). The guide rails (28) are slidably mounted on the inner walls of the limiting grooves (29). A heat dissipation column (24) is fixedly mounted between the inner walls of the two opposite ends of the box body (23). A heat conducting rod (22) is fixedly mounted on the outer surface of the heat dissipation column (24). One end of the heat conducting rod (22) passes through the outer surface of the box body (23). The outer surface of the box body (23) is flush with the outer surface of the fan blade. A partition (25) is slidably mounted between the inner walls of the box body (23). The partition (25) is arranged above the heat dissipation column (24). Stone is filled between the partition (25) and the heat dissipation column (24). The upper surface of the partition (25) is symmetrically fixed with two limit columns (26), the upper surface of the box body (23) is provided with two through holes, the two limit columns (26) are slidably installed with the inner walls of the two through holes, the outer surfaces of the two limit columns (26) are sleeved with a second spring (27), the second spring (27) is arranged between the top wall of the box body (23) and the upper surface of the partition (25), the top ends of the plurality of blades are provided with a fixing ring, the circumferential outer surface of the fixing ring is provided with a plurality of mounting grooves (15) at equal intervals, the inner walls of the plurality of mounting grooves (15) at opposite ends are rotatably provided with rubber wheels (16), the circumferential outer surface of the rubber wheel (16) is against the inner wall of the air inlet pipe (9), the mounting grooves Two square sleeves (17) are symmetrically and slidably inserted into the bottom wall of the (15), a heat-conducting block is fixedly installed inside the square sleeve (17), the top end of the heat-conducting block passes through the top end of the square sleeve (17) and a contact head (18) is fixedly installed, the contact head (18) abuts against the outer surface of the rubber wheel (16), the bottom end of the heat-conducting block passes through the bottom end of the square sleeve (17) and a baffle (19) is fixedly installed, the lower surface of the baffle (19) abuts against the top of the heat-conducting rod (22), the inner wall of the fixed ring is provided with a plurality of countersunk holes (21) at equal intervals, the outer surface of the square sleeve (17) is sleeved with a first spring (20), and the first spring (20) is arranged between the top wall of the countersunk hole (21) and the upper surface of the baffle (19).

2. A cold storage air cooler defrosting device according to claim 1, characterized in that: A water pipe (5) is fixedly installed inside the shell (1), and the water pipe (5) is arranged between the fan (12) and the heat exchanger (2). A plurality of water spray holes (7) are provided on the outer surface of the water pipe (5) close to the heat exchanger (2). One end of the water pipe (5) passes through the outer surface of the shell (1) and is fixedly installed with a water pipe joint (6). A water outlet pipe (8) is fixedly installed on the lower surface of the shell (1), and the water outlet pipe (8) is connected to the inside of the shell (1).

3. A cold storage air cooler defrosting device according to claim 1, characterized in that: A drive motor (13) is fixedly mounted on the outer surface of the other side of the mounting plate (11); an output end of the drive motor (13) passes through the outer surface of the mounting plate (11) and is fixedly mounted at the rotation center of the fan (12); and a protective net (10) is fixedly mounted on one end of the air inlet pipe (9) close to the drive motor (13).

4. A cold storage air cooler defrosting device according to claim 1, characterized in that: An air inlet pipe (3) is fixedly mounted on the outer surface of one side of the shell (1), and an air outlet pipe (4) is fixedly mounted on the outer surface of one side of the shell (1); the air inlet pipe (3) is connected to the air inlet end of the heat exchanger (2), and the air outlet pipe (4) is connected to the air outlet end of the heat exchanger (2).

Images