Refrigerating unit for refrigeration house

Abstract

The utility model relates to a refrigerating unit for a refrigeration house, which is characterized in that a filter plate frame is arranged on a housing of the refrigerating unit, and a filter screen is arranged in the filter plate frame; a plurality of different sensors are arranged in the shell and are used for monitoring the blockage condition of the filter screen in real time and transmitting detected information to the controller; a mounting base and a guide rod are arranged on the two side walls of the air inlet respectively, a lead screw is arranged in the mounting base, the end of the lead screw is connected with a first motor, the lead screw is sleeved with a sliding block, the sliding block is connected with a mounting frame, a reverse blowing assembly and a sweeping assembly are arranged on the mounting frame, and the first motor drives the reverse blowing assembly and the sweeping assembly to move up and down. Dust collection holes are formed in the two side walls and the top of the filter plate frame and are connected with a dust collection assembly; when the detection assembly detects that the filter screen is blocked, the controller starts the first motor, the back-blowing assembly, the sweeping assembly and the dust collection assembly to work cooperatively, back-blowing and sweeping are conducted on the filter screen, the filter screen is automatically cleaned, and the cleaned dust is collected through the dust collection assembly to prevent secondary pollution of the dust.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a refrigeration unit for cold storage. Background Technology

[0002] Refrigeration units are common refrigeration equipment, typically used in cold storage rooms, food refrigerators, and other similar applications. A typical refrigeration unit includes at least a compressor, evaporator, condenser, and expansion valve. The compressor compresses the refrigerant into a high-temperature, high-pressure gas. The condenser dissipates the heat to the outside, cooling the refrigerant into a liquid. An expansion valve then expands the liquid refrigerant into a low-temperature, low-pressure gas, which then absorbs heat from the cold storage room through the evaporator. The gas evaporates back into a gas, and this cycle repeats to achieve refrigeration and maintain low temperatures. During operation, refrigeration units generate high temperatures, requiring heat dissipation components to effectively remove this heat and prevent overheating. To prevent dust and impurities from entering the unit, filters are usually installed on the casing. However, these filters can become clogged over time, affecting heat dissipation efficiency.

[0003] To address the aforementioned issues, utility model patent application CN202421552181.4 discloses a cold storage refrigeration unit. This unit uses a connecting drive assembly inside the filter frame to drive the up-and-down movement of a jet nozzle. Compressed gas generated by a vortex air pump enters the air pipe through a conduit and connecting pipe, and is then ejected through the jet nozzle to blow dust off the filter screen, preventing clogging. However, in practical use, it has been found that relying solely on the jet nozzle to blow away dust is insufficient for thoroughly removing tightly adhered dirt, potentially leading to incomplete filter cleaning over time. Furthermore, the blown-off dust disperses, polluting the surrounding environment, increasing cleaning difficulty, and easily causing secondary pollution, thus affecting the air quality inside the cold storage. Utility Model Content

[0004] Therefore, it is necessary to provide a refrigeration unit for cold storage.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A refrigeration unit for cold storage includes a shell and a refrigeration module disposed inside the shell. A controller and a cooling fan are provided on the front side of the shell, and an air inlet is provided on the right side of the shell. A filter plate frame is installed at the air inlet. A filter screen is disposed inside the filter plate frame. A mounting seat and a guide rod are provided on the inner side wall of the shell, and the mounting seat and the guide rod are respectively located on both sides of the air inlet. A lead screw parallel to the guide rod is provided inside the mounting seat. A first motor is provided at the upper end of the lead screw, and a sliding sleeve is sleeved on the lead screw. The block has a slider that is fixedly connected to the first end of the mounting bracket, and the second end of the mounting bracket is sleeved inside the guide rod. The mounting bracket includes an upper mounting rod and a lower mounting rod. A back-blowing assembly is mounted on the upper mounting rod, and a sweeping brush assembly is provided on the lower mounting rod. Multiple dust suction holes are provided on the two inner sidewalls and the top of the filter plate frame. The dust suction holes are connected to the dust suction assembly and are used to remove dust particles carried out by the back-blowing assembly and the sweeping brush assembly. The housing is provided with a detection assembly for detecting filter clogging. The detection assembly is signal-connected to the controller.

[0006] In one embodiment, the inner wall surrounding the air inlet is provided with multiple slide rails and multiple slots, and the filter plate frame is provided with slide grooves that match the slide rails and buckles that correspond to the slots.

[0007] In one embodiment, the mesh openings on the filter screen are angled downwards from the inside to the outside.

[0008] In one embodiment, the upper mounting rod is a horizontally arranged straight rod, the lower mounting rod is a U-shaped rod, and the upper mounting rod and the lower mounting rod are arranged parallel to each other.

[0009] In one embodiment, the backflush assembly includes a high-pressure air pump, a connecting pipe, an air pipe, and a plurality of jet nozzles. The high-pressure air pump is located on the rear side of the housing. One end of the connecting pipe is connected to the high-pressure air pump, and the other end is connected to the air pipe. The air pipe is fixed on the upper mounting rod, and the plurality of jet nozzles are arranged at equal intervals on the air pipe.

[0010] In one embodiment, the jet nozzle sprays air in the same direction as the mesh tilt of the filter screen.

[0011] In one embodiment, the brush assembly includes a roller brush and a second motor that drives the roller brush to rotate. The two ends of the roller brush are respectively rotatably connected to the two ends of the lower mounting rod. The second motor is fixed to one end of the lower mounting rod, and the output end of the second motor is fixedly connected to one end of the roller brush.

[0012] In one embodiment, the vacuuming assembly includes a vacuuming fan, a main vacuuming pipe, and a plurality of vacuuming branch pipes. The vacuuming branch pipes are respectively connected to vacuuming holes. The plurality of vacuuming branch pipes are connected in parallel to a first end of the main vacuuming pipe. The second end of the main vacuuming pipe is connected to the vacuuming fan. The vacuuming fan is disposed on the rear side of the housing.

[0013] In one embodiment, the detection component includes a wind speed sensor, a differential pressure sensor, and a temperature sensor. The temperature sensor is disposed at the center inside the housing, the differential pressure sensor is disposed on both the inner and outer sides of the filter, and the wind speed sensor is disposed inside the housing on the side near the cooling fan.

[0014] In one embodiment, the first motor, the second motor, the high-pressure air pump, and the dust extraction fan are all electrically connected to the controller.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a refrigeration unit for cold storage, which features a detachable filter plate frame on the refrigeration unit casing. A filter screen is installed inside the filter plate frame to prevent dust from entering the casing. A wind speed sensor and a temperature sensor are installed inside the casing, and differential pressure sensors are installed on both sides of the filter screen. These sensors monitor the filter screen's clogging status in real time, providing a more comprehensive understanding of the clogging condition. The detection component transmits the detected information to the controller. Mounting seats and guide rods are respectively installed on the side walls of the air inlet, located inside the filter plate frame. A lead screw is installed inside the mounting seat, with its end connected to a first motor. A slider is sleeved on the lead screw. The mounting frame is connected to a slider and a guide rod at both ends. It is equipped with a back-blowing component and a sweeping brush component. A first motor drives the slider to move, and the back-blowing and sweeping brush components move up and down with the slider. The guide rod restricts the movement trajectory of the mounting frame, allowing the back-blowing and sweeping brush components to better clean the filter screen. Dust suction holes are located on both sides and the top of the filter plate frame, and these holes are connected to a dust suction component. When the detection component detects filter screen blockage, the controller activates the first motor, back-blowing component, sweeping brush component, and dust suction component to work together. The back-blowing and sweeping brush components move up and down with the slider to back-blow and sweep the filter screen, achieving automatic cleaning. The dust collected by the dust suction component prevents secondary pollution. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the structure of a refrigeration unit for cold storage according to one embodiment;

[0018] Figure 2 This is a side view sectional structural schematic diagram of a refrigeration unit for cold storage according to one embodiment;

[0019] Figure 3 This is a top cross-sectional structural schematic diagram of a refrigeration unit for cold storage according to one embodiment;

[0020] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0021] Figure 5 for Figure 3 Enlarged view of part B in the image;

[0022] Figure 6 This is a schematic diagram of the filter plate frame in one embodiment.

[0023] In the attached diagram, 10 is the refrigeration unit for cold storage; 100 is the housing; 110 is the controller; 120 is the cooling fan; 130 is the air inlet; 200 is the refrigeration module; 300 is the filter plate frame; 310 is the filter screen; 320 is the slide rail; 330 is the buckle; 340 is the dust suction hole; 400 is the mounting base; 410 is the lead screw; 420 is the slider; 430 is the first motor; 440 is the guide rod; 500 is the mounting bracket; 510 is the upper mounting rod; 5 20. Lower mounting rod; 600. Backflush assembly; 610. High-pressure air pump; 620. Connecting pipe; 630. Air hose; 640. Air nozzle; 700. Brush assembly; 710. Roller brush; 720. Second motor; 800. Vacuuming assembly; 810. Vacuuming branch pipe; 820. Main vacuuming pipe; 830. Vacuuming fan; 900. Detection assembly; 910. Wind speed sensor; 920. Differential pressure sensor; 930. Temperature sensor. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0025] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] In one embodiment, such as Figures 1 to 6 As shown, a refrigeration unit 10 for cold storage includes a housing 100 and a refrigeration module 200 disposed inside the housing 100. A controller 110 and a cooling fan 120 are located on the front side of the housing 100. An air inlet 130 is located on the right side of the housing 100, and a filter plate frame 300 is installed at the air inlet 130. A filter screen 310 is disposed inside the filter plate frame 300. A mounting base 400 and a guide rod 440 are provided on the inner side wall of the housing 100, located on opposite sides of the air inlet 130. A lead screw 410 parallel to the guide rod 440 is disposed inside the mounting base 400. A first motor 430 is disposed at the upper end of the lead screw 410. A slider 420 is sleeved on the lead screw 410. The first end of the mounting bracket 500 is fixedly connected to the guide rod 440, and the second end of the mounting bracket 500 is sleeved inside the guide rod 440. The mounting bracket 500 includes an upper mounting rod 510 and a lower mounting rod 520. A back-blowing assembly 600 is mounted on the upper mounting rod 510, and a brush assembly 700 is provided on the lower mounting rod 520. The filter plate frame 300 is provided with multiple dust suction holes 340 on both side walls and the top away from the inside of the housing 100. The dust suction holes 340 are connected to the dust suction assembly 800 and are used to remove dust particles brought out by the back-blowing assembly 600 and the brush assembly 700. The housing 100 is provided with a detection assembly 900 for detecting the clogging of the filter screen 310. The detection assembly 900 is connected to the controller 110.

[0027] In this embodiment, the refrigeration unit includes a housing 100 and a refrigeration module 200 disposed within the housing 100. The housing 100 has a cuboid structure. A controller 110 and a cooling fan 120 for dissipating heat from the inside of the refrigeration unit are provided on the front side of the housing 100. An air inlet 130 is provided on the right side wall of the housing 100. A filter plate frame 300 is detachably installed at the air inlet 130. A filter screen 310 is embedded in the filter plate frame 300. Mounting seats 400 and vertically arranged guide rods 440 are respectively provided on the inner side walls of the housing 100 located on both sides of the air inlet 130. The mounting base 400 has an opening on the side opposite to the guide rod 440. A lead screw 410 parallel to the guide rod 440 is installed inside the mounting base 400. Both ends of the lead screw 410 are rotatably connected to the mounting base 400. A first motor 430 is fixed to the upper end of the mounting base 400, and the output end of the first motor 430 is fixedly connected to the upper end of the lead screw 410 to drive the lead screw 410 to rotate. A slider 420 is sleeved on the lead screw 410. The slider 420 is fixedly connected to the first end of the mounting bracket 500, and the second end of the mounting bracket 500 is sleeved inside the guide rod 440, forming... The sliding structure; the mounting bracket 500 includes an upper mounting rod 510 and a lower mounting rod 520. A back-blowing assembly 600 is fixed on the upper mounting rod 510 to blow dust off the filter screen 310. A brush assembly 700 is provided on the lower mounting rod 520 to clean residue from the surface of the filter screen 310, ensuring unobstructed flow and improving cooling efficiency. A dust suction hole 340 is provided on the side wall of the filter plate frame 300, located on the side of the filter screen 310 furthest from the interior of the housing 100. The dust suction hole 340 is connected to the dust suction assembly 800, forming a dust suction channel to effectively remove dust particles. To prevent secondary pollution, a detection component 900 is provided on the housing 100 to monitor the status of the filter 310 in real time. The detection component 900 is connected to the controller 110. When the information detected by the detection component 900 exceeds the threshold set by the controller 110, the controller 110 will automatically start the back-blowing component 600 and the brush component 700 to clean the filter 310. At the same time, the dust collection component 800 works synchronously to collect the dust particles brought out by the back-blowing component 600 and the brush component 700 through the dust collection channel, so as to avoid air pollution and reduce the difficulty of cleaning.

[0028] In one embodiment, a plurality of slide rails 320 and a plurality of slots are provided on the inner sidewall surrounding the air inlet 130. The filter plate frame 300 is provided with a sliding groove that matches the slide rail 320 and a buckle 330 that corresponds to the slot. Specifically, a plurality of slide rails 320 and a plurality of slots are evenly distributed on the inner sidewall of the air inlet 130. The slide rails 320 are perpendicular to the plane of the air inlet 130. The outer sidewall of the filter plate frame 300 is provided with a sliding groove that matches the slide rail 320 and a buckle 330 that matches the slot. During installation, the sliding groove on the filter plate frame 300 is aligned with the slide rail 320 to allow the filter plate frame 300 to slide smoothly on the slide rail 320, preventing jamming or tilting. The buckle 330 on the filter plate frame 300 is then tightly engaged with the slot to ensure that the filter plate frame 300 is firmly fixed and to prevent the filter plate frame 300 from shaking or falling off.

[0029] In one embodiment, the mesh openings on the filter 310 are arranged at an angle downwards from the inside to the outside. Specifically, the mesh openings of the filter 310 are arranged at an angle downwards from the inside to the outside, that is, the openings on the side of the mesh openings closer to the inside of the housing 100 are higher than the openings on the side farther from the inside of the housing 100, forming an inclined structure. This facilitates the smooth sliding of dust particles under the action of gravity, reduces clogging of the filter 310, improves filtration efficiency, and extends the service life of the filter 310.

[0030] In one embodiment, the upper mounting rod 510 is a horizontally arranged straight rod, and the lower mounting rod 520 is a U-shaped rod, with the upper mounting rod 510 and the lower mounting rod 520 arranged parallel to each other. Specifically, the mounting bracket 500 consists of an upper mounting rod 510 and a lower mounting rod 520. The upper mounting rod 510 is a horizontally positioned straight rod used to mount the back-blowing assembly 600. The lower mounting rod 520 is a U-shaped rod with its opening facing the filter screen 310, facilitating the installation of the brush assembly 700 for all-around cleaning of the filter screen 310. Both ends of the upper mounting rod 510 and the lower mounting rod 520 are connected by connectors to keep them parallel and stable. One end of the connector is fixedly connected to the slider 420 on the lead screw 410, while the other end is sleeved on the guide rod 440, allowing the mounting bracket 500 to move up and down as the lead screw 410 rotates, adjusting the position of the back-blowing assembly 600 and the brush assembly 700. The height of the lead screw 410 is greater than the height of the filter screen 310, ensuring that all areas of the filter screen 310 are effectively cleaned, thus improving the overall cleaning effect.

[0031] In one embodiment, the backflush assembly 600 includes a high-pressure air pump 610, a connecting pipe 620, an air pipe 630, and a plurality of jet nozzles 640. The high-pressure air pump 610 is disposed on the rear side of the housing 100. One end of the connecting pipe 620 is connected to the high-pressure air pump 610, and the other end is connected to the air pipe 630. The air pipe 630 is fixed on the upper mounting rod 510, and the plurality of jet nozzles 640 are arranged at equal intervals on the air pipe 630. Specifically, the air pipe 630 is fixed to the upper mounting rod 510, and the length of the air pipe 630 is greater than the width of the filter screen 310 to ensure that the air jet covers the entire area of ​​the filter screen 310. Multiple air jet nozzles 640 are evenly spaced on the air pipe 630. One end of the air pipe 630 is closed, and the other end is connected to one end of the connecting pipe 620. The other end of the connecting pipe 620 passes through the rear side wall of the housing 100 and is connected to the air outlet of the high-pressure air pump 610 fixed on the rear side of the housing 100. The high-pressure airflow generated by the high-pressure air pump 610 is delivered to the air jet nozzles 640 through the connecting pipe 620 and the air pipe 630. The air jet nozzles 640 spray high-pressure airflow toward the filter screen 310, forming a strong blowing force to effectively blow off the dust particles attached to the filter screen 310 and keep the air intake channel of the filter screen 310 unobstructed.

[0032] In one embodiment, the jet nozzle 640 sprays air in the same direction as the mesh tilt direction of the filter screen 310. Specifically, the jet nozzle 640 is fixed at an angle to the air pipe 630, and the tilt angle of the jet nozzle 640 is consistent with the tilt angle of the mesh of the filter screen 310, so that the high-pressure airflow blows along the tilt direction of the mesh, further improving the effect of blowing away dust.

[0033] In one embodiment, the brush assembly 700 includes a roller brush 710 and a second motor 720 that drives the roller brush 710 to rotate. Both ends of the roller brush 710 are rotatably connected to both ends of the lower mounting rod 520. The second motor 720 is fixed to one end of the lower mounting rod 520, and its output end is fixedly connected to one end of the roller brush. Specifically, the roller brush 710 is fixed inside the U-shaped opening of the lower mounting rod 520. The bristles of the roller brush 710 abut against the inner surface of the filter screen 310. Both ends of the roller brush 710 are rotatably connected to the ends of the U-shaped rod. One end of the roller brush 710 extends through the sidewall of the U-shaped rod to the outside of the U-shaped rod and is connected to the output end of the second motor 720 fixed to the outside of the U-shaped rod. The second motor 720 drives the roller brush 710 to rotate, causing the bristles to tightly adhere to the filter screen 310, effectively removing residual dust from the surface of the filter screen 310 and ensuring thorough cleaning of the filter screen 310.

[0034] In one embodiment, the vacuuming assembly 800 includes a vacuuming fan 830, a main vacuuming pipe 820, and a plurality of vacuuming branch pipes 810. The vacuuming branch pipes 810 are respectively connected to the vacuuming holes 340. The plurality of vacuuming branch pipes 810 are connected in parallel to the first end of the main vacuuming pipe 820. The second end of the main vacuuming pipe 820 is connected to the vacuuming fan 830. The vacuuming fan 830 is disposed on the rear side of the housing 100. Specifically, the vacuum blower 830 is fixed to the rear side of the housing 100, and the air inlet of the vacuum blower 830 is connected to the first end of the main suction pipe 820. The main suction pipe 820 passes through the through hole on the rear side wall of the housing 100 and enters the interior of the housing 100. The second end of the main suction pipe 820 emits multiple suction branch pipes 810. The number of suction branch pipes 810 is the same as the number of suction holes 340. The ends of the multiple suction branch pipes 810 are connected to the multiple suction holes 340 one by one. When the vacuum blower 830 is running, the dust particles blown off by the back-blowing component 600 and the brush component 700 are sucked into the suction branch pipes 810 through the suction holes 340 and then collected into the main suction pipe 820. Finally, they are collected in the dust collection box connected to the vacuum blower 830 to prevent the dust particles from flying again and to ensure clean air.

[0035] In one embodiment, the detection component 900 includes a wind speed sensor 910, a differential pressure sensor 920, and a temperature sensor 930. The temperature sensor 930 is disposed at the center inside the housing 100, the differential pressure sensor 920 is disposed on the inner and outer sides of the filter 310, and the wind speed sensor 910 is disposed inside the housing 100 on the side near the cooling fan 120. Specifically, the wind speed sensor 910 is located inside the housing 100 and behind the cooling fan 120 to detect changes in wind speed when the cooling fan 120 is running; the differential pressure sensor 920 is located on the inner and outer sides of the filter 310 to monitor the pressure difference between the two sides of the filter 310 in real time; the temperature sensor 930 is located at the center inside the housing 100 to accurately sense changes in internal temperature. The wind speed sensor 910, differential pressure sensor 920, and temperature sensor 930 are all connected to the controller 110. When the wind speed is detected to be lower than the set threshold, or the pressure difference between the two sides of the filter 310 exceeds the preset range, or the temperature inside the housing 100 is higher than the set threshold, the controller 110 immediately activates the back-blowing component 600, the brush component 700, and the vacuuming component 800 to clean the filter 310 and ensure that the air flow channel remains unobstructed.

[0036] In one embodiment, the first motor 430, the second motor 720, the high-pressure air pump 610, and the vacuum cleaner fan 830 are all electrically connected to the controller 110. Specifically, the first motor 430 for controlling the rotation of the lead screw 410, the second motor 720 for controlling the rotation of the roller brush 710, the high-pressure air pump 610 for generating high-pressure airflow, and the vacuum cleaner fan 830 are all electrically connected to the controller 110. The controller 110 precisely adjusts the operating status of each component to ensure that the filter 310 is cleaned efficiently and the system operates stably. When the filter 310 is cleaned and the sensor data returns to normal, the controller 110 automatically stops the operation of each component, saving energy.

[0037] The general workflow of this utility model is as follows: The filter plate frame 300 with filter screen 310 is installed on the air inlet 130 of the housing 100. The refrigeration unit is started, and the heat is discharged by the cooling fan 120. Air enters the refrigeration unit through the filter screen 310. During the operation of the refrigeration module, the wind speed sensor 910 in the detection component 900 monitors the wind speed change in real time, the differential pressure sensor 920 detects the pressure difference on both sides of the filter screen 310, and the temperature sensor 930 monitors the internal temperature. The controller 110 processes the information collected by the detection component 900. When the wind speed, differential pressure, or temperature exceeds the preset range, the controller 110 automatically starts the back-blowing component 600 and the brush component 700 to clean the filter screen 310. At this time, the high-pressure air pump 610 starts and delivers high-pressure gas through the connecting pipe 620 and the air pipe 630 to the nozzle 640. The jet nozzle 640 sprays along the inclined direction of the filter screen 310 mesh, effectively removing dust from the filter screen 310. At the same time, the second motor 720 drives the roller brush 710 to rotate, further cleaning the surface of the filter screen 310. Simultaneously, the first motor 430 starts and drives the lead screw 410 to rotate, causing the back-blowing component 600 and the brush component 700 to slide up and down with the slider 420, thereby achieving all-round, no-dead-angle cleaning of the filter screen 310. During the cleaning process of the filter screen 310, the vacuum fan 830 starts, sucking the dust generated during the cleaning process into the vacuum branch pipe 810 through the vacuum hole 340, and then collecting it after passing through the vacuum main pipe 820, preventing the dust from spreading into the air and polluting the air. It also prevents the dust from re-adhering to the filter screen 310, ensuring that the filter screen 310 always maintains good ventilation, extending the service life of the equipment, and improving the overall operating efficiency.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A refrigerating unit for cold storage, comprising a shell and a refrigerating module arranged inside the shell, characterized in that: The front side of the shell is provided with a controller and a cooling fan, the right side of the shell is provided with an air inlet, and a filter frame is installed at the air inlet; a filter screen is arranged in the filter frame, and a mounting seat and a guide rod are arranged on the inner side wall of the shell and located on the two sides of the air inlet respectively; a lead screw parallel to the guide rod is arranged in the mounting seat, a first motor is arranged at the upper end of the lead screw, a sliding block is sleeved on the lead screw, the sliding block is fixedly connected with a first end of a mounting bracket, and a second end of the mounting bracket is sleeved in the guide rod; the mounting bracket comprises an upper mounting rod and a lower mounting rod, a back blowing assembly is installed on the upper mounting rod, and a sweeping assembly is arranged on the lower mounting rod; a plurality of dust suction holes are arranged on the two inner side walls and the top of the filter frame, the dust suction holes are connected with a dust suction assembly, and the dust suction assembly is used for removing dust particles brought out by the back blowing assembly and the sweeping assembly; a detection assembly for detecting the blockage of the filter screen is arranged on the shell and is signal connected with the controller.

2. The refrigerating unit for cold store according to claim 1, characterized in that, A plurality of sliding rails and a plurality of clamping grooves are arranged on the inner side wall around the air inlet, and a sliding groove matched with the sliding rails and a clamping buckle corresponding to the clamping grooves are arranged on the filter frame.

3. The refrigerating unit for cold store according to claim 1, characterized in that, The mesh holes on the filter screen are arranged obliquely downward from the inner side to the outer side.

4. The refrigerating unit for cold store according to claim 1, characterized in that, The upper mounting rod is a horizontal straight rod, the lower mounting rod is a U-shaped rod, and the upper mounting rod and the lower mounting rod are arranged in parallel.

5. The refrigerating unit for cold store according to claim 3, characterized in that, The back blowing assembly comprises a high-pressure air pump, a connecting pipe, an air pipe and a plurality of air jet nozzles, the high-pressure air pump is arranged at the rear side of the shell, one end of the connecting pipe is connected with the high-pressure air pump, the other end of the connecting pipe is connected with the air pipe, the air pipe is fixed on the upper mounting rod, and the plurality of air jet nozzles are arranged at equal intervals on the air pipe.

6. The refrigerating unit for cold store according to claim 5, characterized in that, The air jet direction of the air jet nozzle is the same as the oblique direction of the mesh holes of the filter screen.

7. The refrigerating unit for cold store according to claim 1, characterized in that, The sweeping assembly comprises a rolling brush and a second motor for driving the rolling brush to rotate, the two ends of the rolling brush are rotatably connected with the two ends of the lower mounting rod respectively, the second motor is fixed on one end of the lower mounting rod, and the output end of the second motor is fixedly connected with one end of the rolling brush.

8. The refrigerating unit for cold store according to claim 1, characterized in that, The dust suction assembly comprises a dust suction fan, a dust suction main pipe and a plurality of dust suction branch pipes, the dust suction branch pipes are connected with the dust suction holes respectively, the plurality of dust suction branch pipes are connected in parallel to a first end of the dust suction main pipe, a second end of the dust suction main pipe is connected with the dust suction fan, and the dust suction fan is arranged at the rear side of the shell.

9. The refrigerating unit for cold store according to claim 1, characterized in that, The detection assembly comprises a wind speed sensor, a differential pressure sensor and a temperature sensor, the temperature sensor is arranged at the center inside the shell, the differential pressure sensor is arranged on the inner and outer sides of the filter screen, and the wind speed sensor is arranged on one side of the shell close to the cooling fan.

10. The refrigerating unit for cold store according to claim 1, characterized in that, The first motor, the second motor, the high-pressure air pump and the dust suction fan are electrically connected with the controller.

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