Energy-saving industrial refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration equipment, in particular to energy-saving industrial refrigeration equipment which comprises an air inlet square pipe and a filtering square pipe, two clean channels are symmetrically designed on the filtering square pipe and can both communicate with a refrigeration assembly of the refrigeration equipment, an air filter screen is hinged to the interior of each clean channel, and the air filter screen is connected with the air inlet square pipe. A porous direct injection type filter screen cleaner is designed on the inner wall of the clean channel; the air inlet square pipe communicates with the output end of the induced draft fan, a selection assembly is installed in the air inlet square pipe, and the selection assembly can switch communication between the air inlet square pipe and any clean channel. The air filter screen has an inclined state and a vertical state, in the inclined state, the inclination angle of the air filter screen is adjustable, so that the air receiving angle of the windward side of the air filter screen can be adjusted, the air filter screen in the machine can be cleaned, and meanwhile air can be continuously and effectively filtered in a mode of switching clean channels.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, in particular to energy-saving industrial refrigeration equipment. Background Art

[0002] Refrigeration equipment is widely used in industrial applications, especially in industrial environments that require clean air, such as food and beverage manufacturing, which needs to maintain a suitable temperature for food production or storage. At the same time, the refrigeration equipment must also ensure the cleanliness of the incoming air.

[0003] In the prior art, the air purification of traditional refrigeration equipment mostly uses filter nets for protection to intercept particulate matter. However, the filter nets of existing refrigeration equipment are inconvenient to replace, especially in environments with long air intake time or ventilation time. If they are not cleaned in time, the filtered dirt will accumulate and cause blockage to the filter net of the central air conditioner, affecting the refrigeration efficiency of the refrigeration equipment. Summary of the invention

[0004] The invention provides an energy-saving industrial refrigeration device, which can clean an air filter screen inside the machine and can continuously and effectively filter air by switching clean channels.

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

[0006] An energy-saving industrial refrigeration device, comprising an exhaust fan, and further comprising:

[0007] An air intake square tube and a filter square tube, wherein two clean channels are symmetrically designed on the filter square tube, and both of the clean channels can be connected to the refrigeration component of the refrigeration equipment. An air filter is hinged in the clean channel, and a porous direct-injection filter cleaner is designed on the inner wall of the clean channel; the air intake square tube is connected to the output end of the induced fan, and a selection component is installed inside the air intake square tube, and the selection component can switch the connection between the air intake square tube and any clean channel; the air filter has two states: inclined and vertical. In the inclined state, the inclination angle of the air filter is adjustable, so that the air filter can adjust the wind receiving angle of the windward side. In the vertical state, the mesh surface of the air filter is level with the inner wall of the clean channel, so that the filter cleaner can evenly clean the air filter.

[0008] Optionally, the other end of the air filter is hinged with a bearing seat, and a linkage plate is slidably installed in the clean channel. A track groove is provided on the linkage plate, and a track bar is provided on the inner wall of the clean channel. The linkage plate is slidably assembled on the inner wall of the clean channel through the cooperation of the track groove and the track bar. A limiting groove is also provided on the outer wall of the linkage plate, and the bearing seat is slidably assembled in the limiting groove. The air filter is hinged to the inner wall of the clean channel through a rotating shaft, and a servo motor for controlling the rotation of the rotating shaft is installed on the outside of the outer wall of the air intake square tube. When the rotating shaft rotates, the air filter can change its inclination angle or operate to a vertical state, and the linkage plate will slide passively.

[0009] Optionally, the inner wall of the clean channel and the outer wall of the linkage plate are both equipped with a first docking plate, the outer wall of the linkage plate is also equipped with a second docking plate, and the inner wall of the clean channel is also equipped with a third docking plate. When the air filter is in a vertical state, the two first docking plates are tightly fitted to form a first side sealing strip, and the second docking plate and the third docking plate are tightly fitted to form a second side sealing strip. At this time, a closed flushing chamber is formed between the filter square tube, the linkage plate, the first side sealing strip and the second side sealing strip, and the filter cleaner is located in the flushing chamber.

[0010] Optionally, a sewage outlet is provided on the outer wall of the filtering square tube, and the sewage outlet is connected with the flushing chamber, and the connecting part between the sewage outlet and the flushing chamber is designed with a conical drainage groove, and a conical plug block is slidably installed on the inner wall of the drainage groove to block the interconnection between the flushing chamber and the sewage outlet, and the obstruction between the sewage outlet and the flushing chamber can be removed when the conical plug block is away from the flushing chamber, and an assembly rod is slidably installed on the third docking plate, one end of the assembly rod passes through the outer wall of the third docking plate and faces the second docking plate, and the other end of the assembly rod passes through the sewage outlet and is fixedly connected with the conical plug block, and when the flushing chamber is formed, the conical plug block is driven away from the flushing chamber by the assembly rod, and a reset spring for resetting the assembly rod is also designed inside the third docking plate.

[0011] Optionally, the inner wall of the second side sealing strip is designed as a slope, and the inner wall of the second side sealing strip and the inner wall of the drain groove are the same slope.

[0012] Optionally, the filter cleaner includes a liquid storage chamber opened in the outer wall of the filter square tube, the liquid storage chamber is connected to an external high-pressure cleaning pump, and the inner wall array of the liquid storage chamber is provided with a plurality of jet holes, and the axial direction of the jet holes is perpendicular to the inner wall of the clean channel.

[0013] Optionally, a telescopic sleeve is fixedly installed between the outer wall of the linkage plate and the clean channel, and the telescopic sleeve is designed as a foldable storage structure. When the telescopic sleeve is retracted, it can seal and fill the area generated by the displacement of the linkage plate.

[0014] Optionally, the selection component includes an assembly column rotatably mounted on the inner wall of the air intake square tube, the assembly column being provided with an air guide groove, the assembly column limiting the connectivity of the air intake square tube, the air intake square tube being located in the center of the filter square tube, when the assembly column rotates, the output end of the air guide groove can be rotated to any clean channel, and the outer wall of the filter square tube is provided with a drive motor for controlling the rotation of the assembly column.

[0015] Optionally, the air guide groove includes a fan-shaped air intake port and a DC air outlet that are in an interconnected relationship, and a curved angle design is designed at the connection between the fan-shaped air intake port and the DC air outlet.

[0016] Optionally, the flow rate of the air guide groove is smaller than the flow rate of the clean channel.

[0017] The present invention provides an energy-saving industrial refrigeration equipment, which has the following beneficial effects:

[0018] 1. Through the coordination between the assembly column, the air guide groove and the two clean channels, when one of the air filters is contaminated and needs to be cleaned, the assembly column will rotate, and the air inlet square tube will be connected to the clean channel where the other air filter is located through the air guide groove. The switching is completed without stopping the machine, so that the filtration of the refrigeration equipment can be carried out continuously and effectively.

[0019] 2. By designing the air filter and the linkage plate, when the shaft drives the air filter to rotate, the other end of the air filter will move in an arc with the shaft as the center. In the tilted state, the angle of the windward side of the air filter can be adjusted. By changing the angle at which the air hits the air filter, the dust and particulate matter in the air can be captured more effectively, thereby optimizing the filtering effect.

[0020] 3. When the air filter is in a vertical state, a closed flushing cavity is formed, which can surround the air filter. The surface of the air filter is impacted by the filter cleaner, so that the air filter can be cleaned, and the liquid in the flushing process will not leak in the clean channel.

[0021] Fourth, through the cooperation of the drain trough, the conical plug and the assembly rod, when the second docking plate and the third docking plate are tightly fitted to form the second side sealing strip, the conical plug has been separated from the only position. At this time, the flushing cavity is formed and the drain trough is open, and the sewage after flushing can be immediately discharged outward through the drain trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the external three-dimensional structure of the air intake square tube and the filter square tube in the present invention;

[0023] Figure 2 For the present invention Figure 1 A right view structural diagram of ;

[0024] Figure 3 For the present invention Figure 2 The schematic diagram of the structure is a cross-section at AA in the middle;

[0025] Figure 4 This is a diagram showing the internal structure of the air intake square tube and the filter square tube of the present invention;

[0026] Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0027] Figure 6 It is a structural schematic diagram of the hollow filter screen and the linkage plate of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the assembly column and the air guide groove in the present invention.

[0029] In the figure: 1. air intake square tube; 2. filter square tube; 3. assembly column; 4. air guide groove; 6. air filter; 7. bearing seat; 8. linkage plate; 9. telescopic sleeve; 11. sewage outlet; 12. first docking plate; 13. second docking plate; 14. third docking plate; 15. assembly rod; 16. conical plug block; 17. liquid storage chamber; 18. jet hole. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 7 The present invention provides a technical solution: an energy-saving industrial refrigeration equipment, including an exhaust fan, and also including:

[0032] The air intake square tube 1 and the filter square tube 2, the filter square tube 2 is symmetrically designed with two clean channels, both of which can be connected to the refrigeration components of the refrigeration equipment, an air filter 6 is hinged in the clean channel, and the inner wall of the clean channel is designed with a porous direct-injection filter cleaner; the air intake square tube 1 is connected to the output end of the induced fan, and a selection component is installed inside the air intake square tube 1, and the selection component can switch the connection between the air intake square tube 1 and any clean channel; the air filter 6 has two states: inclined and vertical. In the inclined state, the inclination angle of the air filter 6 is adjustable, so that the air filter 6 can adjust the wind receiving angle of the windward side. In the vertical state, the mesh surface of the air filter 6 is level with the inner wall of the clean channel, so that the filter cleaner can evenly clean the air filter 6.

[0033] In the prior art, filters have always been cleaned by replacing them through a quick-release and quick-install design to achieve off-machine cleaning of the filters. However, for industrial environments with large ventilation volumes or high cleanliness levels, they need to be cleaned inside the machine to allow for reuse and reduce disassembly operations.

[0034] See also Figures 1 to 6 In the present invention, by designing two clean channels and air filters 6, when one of the air filters 6 is contaminated and needs to be cleaned, the selection component will connect the air intake square tube 1 with the clean channel where the other air filter 6 is located, and the switching will be completed without stopping the machine, so that the filtering of the refrigeration equipment can be carried out continuously and effectively.

[0035] The contaminated air filter 6 will turn from an inclined state to a vertical state, so that the air filter 6 can be cleaned in the clean channel. The adjustable inclination angle of the air filter 6 can change the angle at which the air hits the air filter 6, so that the dust and particulate matter in the air can be captured more effectively and the filtering effect can be optimized. Secondly, changing the direction of air flow can disperse the airflow, reduce the concentrated accumulation of dust and particles on the air filter 6, and extend the cleaning cycle of the air filter 6.

[0036] The present invention adopts the upward air intake method.

[0037] Among the more preferred embodiments, the other end of the air filter 6 is hinged with a bearing seat 7, and a linkage plate 8 is slidably installed in the clean channel. A track groove is provided on the linkage plate 8, and a track bar is provided on the inner wall of the clean channel. The linkage plate 8 is slidably assembled on the inner wall of the clean channel through the cooperation of the track groove and the track bar. A limiting groove is also provided on the outer wall of the linkage plate 8, and the bearing seat 7 is slidably assembled in the limiting groove. The air filter 6 is hinged on the inner wall of the clean channel through a rotating shaft, and a servo motor for controlling the rotation of the rotating shaft is installed on the outer wall of the air intake square tube 1. When the rotating shaft rotates, the air filter 6 can change its inclination angle or run to a vertical state, and the linkage plate 8 will slide passively. Please refer to Figures 2 to 6 In the present embodiment, when the rotating shaft drives the air filter 6 to rotate, the other end of the air filter 6 will move in an arc with the rotating shaft as the center. In the inclined state, the angle of the windward surface of the air filter 6 can be adjusted. At the same time, the position of the free end of the air filter 6 will change, and the linkage plate 8 and the track groove are restricted by the track bar, so that the linkage plate 8 will be displaced synchronously. In this process, the air filter 6 will change from an inclined state to a vertical state.

[0038] Among the more preferred embodiments, the inner wall of the clean channel and the outer wall of the linkage plate 8 are both installed with a first docking plate 12, the outer wall of the linkage plate 8 is also installed with a second docking plate 13, and the inner wall of the clean channel is also installed with a third docking plate 14. When the air filter 6 is in a vertical state, the two first docking plates 12 are tightly fitted to form a first side sealing strip, and the second docking plate 13 and the third docking plate 14 are tightly fitted to form a second side sealing strip. At this time, a closed flushing chamber is formed between the filter square tube 2, the linkage plate 8, the first side sealing strip and the second side sealing strip, and the filter cleaner is located in the flushing chamber, please refer to Figures 2 to 6 In this embodiment, by forming a closed flushing chamber, the air filter 6 can be surrounded, and the surface of the air filter 6 is impacted by the filter cleaner, so that the air filter 6 can be cleaned, and the liquid in the flushing process will not leak into the clean channel.

[0039] Among the more preferred embodiments, a sewage outlet 11 is provided on the outer wall of the filter square tube 2, and the sewage outlet 11 is communicated with the flushing chamber. The communicating portion between the sewage outlet 11 and the flushing chamber is designed with a conical drainage groove, and a conical plug block 16 is slidably installed on the inner wall of the drainage groove to block the communication between the flushing chamber and the sewage outlet 11. When the conical plug block 16 is away from the flushing chamber, the barrier between the sewage outlet 11 and the flushing chamber can be removed. An assembly rod 15 is slidably installed on the third docking plate 14, one end of the assembly rod 15 passes through the outer wall of the third docking plate 14 and faces the second docking plate 13, and the other end of the assembly rod 15 passes through the sewage outlet 11 and is fixedly connected with the conical plug block 16. When the flushing chamber is formed, the conical plug block 16 is driven away from the flushing chamber by the assembly rod 15, and a reset spring for resetting the assembly rod 15 is also designed inside the third docking plate 14, please refer to Figure 5 , due to the unique matching relationship between the drain trough and the conical plug 16, that is, the matching of the drain trough and the conical plug 16 can only achieve the sealing of the drain trough when they are in the unique position, blocking the communication between the flushing chamber and the sewage outlet 11, and in this embodiment, through the matching of the drain trough, the conical plug 16 and the assembly rod 15, when the assembly rod 15 drives the conical plug 16 away from the flushing chamber, the displacement of the conical plug 16 will destroy the unique matching, so that the drain trough will have a gap, a larger space or be completely open. At this time, the liquid in the flushing chamber will be transferred to the sewage outlet 11 through the drain trough, and the opening of the drain trough is related to the formation of the flushing chamber. When the second docking plate 13 and the third docking plate 14 are tightly fitted to form the second side sealing strip, the conical plug 16 has been out of the unique position. At this time, the flushing chamber is formed and the drain trough is open, and the sewage after flushing can be immediately discharged outward through the drain trough.

[0040] Furthermore, the inner wall of the second side sealing strip is designed as a slope, and the inner wall of the second side sealing strip and the inner wall of the drain groove are the same slope, please refer to Figure 5When the flushing cavity is formed, the second docking plate 13, the third docking plate 14 and the drain trough are at the bottom of the flushing cavity, that is, the inner walls of the second docking plate 13, the third docking plate 14 and the drain trough form the inner bottom of the flushing cavity, and the inner bottom is a slope structure, which can optimize drainage and improve drainage efficiency and smoothness.

[0041] In a preferred embodiment, the filter cleaner includes a liquid storage chamber 17 provided in the outer wall of the filter square tube 2, the liquid storage chamber 17 is connected to an external high-pressure cleaning pump, and a plurality of jet holes 18 are provided in an array on the inner wall of the liquid storage chamber 17, and the axial direction of the jet hole 18 is perpendicular to the inner wall of the clean channel, see Figure 4 In this embodiment, the liquid storage chamber 17 is displaced from the built-in chamber, and a plurality of jet holes 18 constitute a multi-porous direct injection structure. When the jet of the jet hole 18 is in a vertical relationship with the mesh surface of the air filter 6, the liquid directly injected from the multi-porous direct injection can clean the air filter 6 evenly and effectively.

[0042] In a more preferred embodiment, a telescopic sleeve 9 is fixedly installed between the outer wall of the linkage plate 8 and the clean channel. The telescopic sleeve 9 is a foldable storage structure design. When the telescopic sleeve 9 is extended, it can seal and fill the area generated by the displacement of the linkage plate 8. Please refer to Figure 3 and Figure 4 In this embodiment, the telescopic sleeve 9 exists to make up for the space generated after the linkage plate 8 is displaced, so as to avoid leakage of fresh air due to the angle adjustment of the air filter 6, thereby affecting the overall filtering quality. Since the telescopic sleeve 9 is a foldable and storable design, the outer wall of the telescopic sleeve 9 will move during the folding or unfolding process, thereby reducing the adhesion of particles.

[0043] Furthermore, the selection component includes an assembly column 3 rotatably mounted on the inner wall of the air intake square tube 1, and an air guide groove 4 is provided on the assembly column 3. The assembly column 3 limits the connectivity of the air intake square tube 1. The air intake square tube 1 is located in the center of the filter square tube 2. When the assembly column 3 rotates, the output end of the air guide groove 4 can rotate to any clean channel. The outer wall of the filter square tube 2 is installed with a driving motor that controls the rotation of the assembly column 3. Please refer to Figure 3 , Figure 4 and Figure 7 In this embodiment, an air guide groove 4 is formed through the assembly column 3, and the outer wall of the assembly column 3 that is not penetrated can block one of the clean channels during the rotation process, and the air guide groove 4 is connected to the other clean channel.

[0044] Furthermore, the air guide groove 4 includes a fan-shaped air intake port and a DC air outlet which are in an interconnected relationship, and a curved angle design is designed at the connection between the fan-shaped air intake port and the DC air outlet. The fan-shaped air intake port can collect more air and reduce the loss of air energy, while the DC air outlet can output air to the air filter 6 stably and evenly. The curved angle design is conducive to the flow of air and makes the air speed increase more smoothly.

[0045] Furthermore, the flow rate of the air guide groove 4 is smaller than the flow rate of the clean channel, so that the air can be decelerated when entering the clean channel, so that it can be more easily captured by the air filter 6, and the flow rate of the air guide groove 4 must be smaller than the flow rate of the air intake square tube 1. When the power of the exhaust fan is constant, the air in the air guide groove 4 will increase in speed to prevent pollutants or particles from adhering to the inner wall of the air guide groove 4.

[0046] By utilizing the above structures, the in-machine clean air filter 6 is realized, and the air can be continuously and effectively filtered by switching the clean channel.

[0047] The present invention does not show the specific installation position and structure of the exhaust fan, and the exhaust fan is a prior art and will not be described in detail.

[0048] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving industrial refrigeration equipment, comprising an exhaust fan, characterized in that: Also includes: An air intake square tube (1) and a filter square tube (2), wherein the filter square tube (2) is symmetrically designed with two clean channels, both of which can be connected to a refrigeration component of a refrigeration device, an air filter (6) is hingedly connected in the clean channel, and a multi-porous direct-injection filter cleaner is designed on the inner wall of the clean channel; The air intake square tube (1) is connected to the output end of the exhaust fan, and a selection component is installed inside the air intake square tube (1), and the selection component can switch the connection between the air intake square tube (1) and any clean channel; The air filter (6) has two states: an inclined state and a vertical state. In the inclined state, the inclination angle of the air filter (6) is adjustable, so that the air filter (6) can adjust the wind receiving angle of the windward surface. In the vertical state, the mesh surface of the air filter (6) is kept horizontal with the inner wall of the clean channel, so that the filter cleaner can evenly clean the air filter (6).

2. The energy-saving industrial refrigeration equipment according to claim 1 is characterized in that: The other end of the air filter (6) is hinged with a bearing seat (7), and a linkage plate (8) is slidably installed in the clean channel. A track groove is provided on the linkage plate (8), and a track bar is provided on the inner wall of the clean channel. The linkage plate (8) is limitedly slidably assembled on the inner wall of the clean channel through the cooperation of the track groove and the track bar. The outer wall of the linkage plate (8) is also provided with a limit groove, and the bearing seat (7) is slidably assembled in the limit groove. The air filter (6) is hinged on the inner wall of the clean channel through a rotating shaft. A servo motor for controlling the rotation of the rotating shaft is installed on the outer wall of the air intake square tube (1). When the rotating shaft rotates, the air filter (6) can change its inclination angle or run to a vertical state, and the linkage plate (8) will slide passively.

3. The energy-saving industrial refrigeration equipment according to claim 2 is characterized in that: The inner wall of the clean passage and the outer wall of the linkage plate (8) are both installed with a first docking plate (12), the outer wall of the linkage plate (8) is also installed with a second docking plate (13), and the inner wall of the clean passage is also installed with a third docking plate (14). When the air filter (6) is in a vertical state, the two first docking plates (12) are tightly fitted to form a first side sealing strip, and the second docking plate (13) and the third docking plate (14) are tightly fitted to form a second side sealing strip. At this time, a closed flushing chamber is formed between the filter square tube (2), the linkage plate (8), the first side sealing strip and the second side sealing strip, and the filter cleaner is located in the flushing chamber.

4. The energy-saving industrial refrigeration equipment according to claim 3 is characterized in that: The outer wall of the filtering square tube (2) is provided with a sewage outlet (11), the sewage outlet (11) is communicated with the flushing chamber, the communicating portion between the sewage outlet (11) and the flushing chamber is designed with a conical drainage groove, the inner wall of the drainage groove is slidably provided with a conical plug (16) for blocking the flushing chamber and the sewage outlet (11) from communicating with each other, the conical plug (16) can remove the barrier between the sewage outlet (11) and the flushing chamber when the conical plug (16) is away from the flushing chamber, and the third docking plate (14) is slidably provided with a conical plug (16) for blocking the flushing chamber and the sewage outlet (11) from communicating with each other. An assembly rod (15) is provided, one end of the assembly rod (15) passes through the outer wall of the third docking plate (14) and faces the second docking plate (13), the other end of the assembly rod (15) passes through the sewage outlet (11) and is fixedly connected to a conical plug block (16); when the flushing cavity is formed, the conical plug block (16) moves away from the flushing cavity under the drive of the assembly rod (15), and a reset spring for resetting the assembly rod (15) is also designed inside the third docking plate (14).

5. The energy-saving industrial refrigeration equipment according to claim 3 is characterized in that: The inner wall of the second side sealing strip is designed as an inclined surface, and the inner wall of the second side sealing strip and the inner wall of the drain groove are the same inclined surface.

6. The energy-saving industrial refrigeration equipment according to claim 3 is characterized in that: The filter screen cleaner comprises a liquid storage chamber (17) opened in the outer wall of the filter square tube (2), the liquid storage chamber (17) is connected to an external high-pressure cleaning pump, and the inner wall array of the liquid storage chamber (17) is provided with a plurality of jet holes (18), and the axial direction of the jet holes (18) is perpendicular to the inner wall of the clean channel.

7. The energy-saving industrial refrigeration equipment according to claim 2 is characterized in that: A telescopic sleeve (9) is fixedly installed between the outer wall of the linkage plate (8) and the clean channel. The telescopic sleeve (9) is designed as a foldable storage structure. When the telescopic sleeve (9) is extended or retracted, it can seal and fill the area generated by the displacement of the linkage plate (8).

8. The energy-saving industrial refrigeration equipment according to any one of claims 1 to 7, characterized in that: The selection component comprises an assembly column (3) rotatably mounted on the inner wall of the air intake square tube (1), an air guide groove (4) is provided on the assembly column (3), and the assembly column (3) limits the connectivity of the air intake square tube (1). The air intake square tube (1) is located at the center of the filter square tube (2). When the assembly column (3) rotates, the output end of the air guide groove (4) can rotate to any clean channel. The outer wall of the filter square tube (2) is installed with a driving motor for controlling the rotation of the assembly column (3).

9. The energy-saving industrial refrigeration equipment according to claim 8, characterized in that: The air guide groove (4) comprises a fan-shaped air intake port and a DC air outlet which are in an interconnected relationship, and a curved angle design is provided at the connection between the fan-shaped air intake port and the DC air outlet.

10. The energy-saving industrial refrigeration equipment according to claim 8, characterized in that: The flow rate of the air guide groove (4) is smaller than the flow rate of the clean channel.

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