Variable-frequency air-cooled water chiller

Abstract

The invention relates to a variable-frequency air-cooled water chiller which comprises a shell, a cooling fan and a protective cover are arranged in the shell, a filter screen plate is arranged on the protective cover, a cleaning assembly is arranged in the protective cover and comprises a cleaning plate arranged on the filter screen plate, a plurality of brushes are arranged on the cleaning plate and abut against the surface of the filter screen plate, and the filter screen plate is arranged on the cleaning plate. The filter screen plate is rotatably arranged on the protective cover, the outer surface of the filter screen plate is fixedly sleeved with a driven gear ring, a driving motor is arranged on the shell, an output shaft of the driving motor is provided with a driving gear meshed with the driven gear ring, and the driven gear ring is driven by the driving gear to rotate, so that rotation of the filter screen plate is achieved; and a brush on the cleaning plate cleans impurities such as dust adhered to the filter screen plate, so that the filter screen plate is prevented from being blocked. The variable-frequency air-cooled cooling-water machine has the effect of reducing the energy loss.

Description

Technical Field

[0001] The present application relates to the technical field of chiller equipment, and in particular to a variable frequency air-cooled chiller. Background Art

[0002] A variable frequency air-cooled chiller is a type of chiller that uses a frequency converter to adjust the compressor speed and uses an air-cooled condenser to achieve heat exchange. It can automatically adjust the cooling capacity according to the actual cooling load demand. It has the advantages of energy saving, precise temperature control, and stable operation. It is widely used in refrigeration equipment in industrial and commercial fields. In a variable frequency air-cooled chiller, a cooling fan is usually installed. The cooling fan accelerates the air flow around the condenser, promotes better heat exchange between the refrigerant in the condenser and the air, and enables the high-temperature and high-pressure gaseous refrigerant to quickly dissipate heat into the atmosphere, thereby cooling and condensing into a liquid, ensuring the smooth progress of the refrigeration cycle.

[0003] In order to ensure normal heat dissipation, air-cooled chillers are usually installed in outdoor environments, and filter plates are usually installed at the cooling fans to prevent external dust and impurities from entering the air-cooled chillers. However, with the extension of usage time, the filter plates will inevitably become clogged. When the filter plates are clogged, the cooling fans cannot dissipate the temperature inside the unit to the outside, resulting in an increase in the condensing temperature and pressure inside the unit. The compressor needs to consume more energy to compress the refrigerant, resulting in an increase in the operating current of the compressor and an increase in power consumption, which in turn increases the energy consumption of the entire air-cooled chiller, which is obviously insufficient. Summary of the invention

[0004] In order to reduce the energy loss of a variable frequency air-cooled chiller, the present application provides a variable frequency air-cooled chiller.

[0005] The present application provides a variable frequency air-cooled chiller adopting the following technical solution: A variable frequency air-cooled chiller comprises a shell, a cooling fan is arranged in the shell, a cooling port is opened on the shell, a protective cover connected to the cooling port is arranged on the outer surface of the shell, a filter screen is arranged on the protective cover, a cleaning component is arranged in the protective cover, the cleaning component comprises a cleaning plate arranged at the end of the filter screen away from the cooling fan, a plurality of brushes are arranged on the cleaning plate, the plurality of brushes all abut against the surface of the filter screen, the length of the cleaning plate is the same as the diameter of the filter screen, the filter screen is rotatably arranged on the protective cover, a driven gear ring is fixedly sleeved on the outer surface of the filter screen, a driving motor is arranged on the shell, and the output shaft of the driving motor is provided with a driving gear meshing with the driven gear ring.

[0006] By adopting the above technical solution, when the filter screen plate is blocked, the driving motor drives the active gear to rotate, the active gear drives the driven gear ring to rotate, and the driven gear ring drives the filter screen plate to rotate in the protective cover. During the rotation of the filter screen plate, the brush generates a circumferential displacement relative to the filter screen plate through the stationary cleaning plate. The brush cleans the dust and other impurities adhering to the filter screen plate, so that the dust and other impurities are separated from the filter screen plate. When the filter screen plate rotates one circle, the brush cleans the filter screen plate in all directions, thereby avoiding blockage of the filter screen plate, reducing the possibility that the internal heat of the unit cannot be dissipated in time, and reducing the energy loss of the variable frequency air-cooled chiller.

[0007] Optionally, the cleaning assembly also includes a dust suction plate, which is arranged on the end face of the filter plate facing away from the cleaning plate, a dust suction chamber is opened in the dust suction plate, and a plurality of dust suction ports are opened on the surface of the dust suction plate facing the filter plate, and the plurality of dust suction ports are connected to the dust suction chamber, a connecting rod is arranged between the dust suction plate and the cleaning plate, a through hole is opened on the filter plate for rotatably cooperating with the connecting rod, and an air suction pump is arranged on the shell, and the air suction end of the air suction pump is connected to the dust suction chamber through an air suction pipe.

[0008] By adopting the above technical solution, during the process of cleaning the filter screen plate with the cleaning plate, the air suction pump is started to generate negative pressure inside the dust suction chamber through the air suction pipe. Since the cleaning plate is connected to the dust suction plate through the connecting rod, during the rotation of the filter screen plate, the dust suction plate is stationary relative to the cleaning plate. Driven by the negative pressure, the dust remaining on the filter screen plate and the dust cleaned by the brush enter the dust suction chamber through the dust suction port, thereby further cleaning the filter screen plate and preventing dust and other impurities from falling into the shell and affecting the condenser and other components.

[0009] Optionally, a mounting shell is provided on the shell body, a rain collecting bag for storing rainwater is provided in the mounting shell, a rain collecting pipe connected to the outside is provided on the rain collecting bag, a water supply pipe is provided on the rain collecting bag, the water outlet end of the water supply pipe extends into the protective cover and is connected to a water outlet ring, a plurality of atomizing nozzles are provided on the water outlet ring, the water outlet direction of the atomizing nozzle is arranged toward the cooling fan, and an extrusion component for extruding the rain collecting bag is provided in the mounting shell.

[0010] By adopting the above technical solution, in rainy weather, the rain collecting pipe collects rainwater and stores it in the rain collecting bag. When the heat dissipation is poor due to blockage of the filter plate, the extrusion component applies pressure to the rain collecting bag, forcing the rainwater stored in the rain collecting bag to flow to the water outlet ring through the water supply pipe. Then the rainwater is sprayed to the cooling fan in the form of mist through multiple atomizing nozzles. The sprayed water mist is evenly sprinkled to the condenser and the surrounding area with the airflow blown by the cooling fan. The water mist absorbs heat when it comes into contact with the high-temperature air, which reduces the temperature inside the unit and improves the heat dissipation effect inside the unit, thereby avoiding the compressor consuming power to compress the refrigerant, further reducing energy loss; at the same time, compared with the use of other water sources for cooling, using collected rainwater is more energy-saving and environmentally friendly.

[0011] Optionally, the extrusion assembly includes an extrusion plate slidably arranged in the mounting shell, the part of the rain collecting bag facing the extrusion plate is made of elastic material, and a slide groove slidably matched with the extrusion plate is opened on the inner side walls opposite to the mounting shell, and a reset member is provided in each of the slide grooves, and the output ends of the reset members abut against the extrusion plate, and a driven gear is meshedly arranged on the outer surface of the driven gear ring, and a cam is coaxially fixedly connected to the driven gear, and the cam is rotatably arranged inside the mounting shell. In the natural state of the reset member, the extrusion surface of the extrusion plate is in contact with the rain collecting bag, and the rain collecting bag is in an unpressurized state. When the cam rotates until the protruding end abuts against the outer surface of the extrusion plate, the reset member is in an energy storage state, and the extrusion plate squeezes the rain collecting bag.

[0012] By adopting the above technical scheme, in the process of the driving motor driving the driven gear ring to rotate, the driven gear ring drives the driven gear to rotate, and the driven gear drives the cam to rotate. When the raised end of the cam rotates toward the extrusion plate, the cam pushes the extrusion plate to move toward the direction of the rain collecting bag. At this time, the reset member is in an energy storage state, and the internal volume of the rain collecting bag changes due to extrusion, and the rainwater in the rain collecting bag enters the water outlet ring through the water supply pipe; when the raised end of the cam rotates away from the extrusion plate, the reset member releases energy and pushes the extrusion plate to move in the direction away from the rain collecting bag, the pressurized state of the rain collecting bag disappears, and the water path connecting the water outlet ring, the water supply pipe and the rain collecting bag is in a stable state; the setting of the extrusion assembly realizes the simultaneous cleaning of the filter screen by the cleaning plate and the intermittent extrusion of the rain collecting bag by the extrusion assembly, thereby improving the heat dissipation effect of the unit when the filter screen is blocked.

[0013] Optionally, a water retaining assembly is provided in the rain collecting pipe, and the water retaining assembly includes a water retaining plate slidably connected to the rain collecting pipe, and limiting blocks are provided on the relative outer surfaces of the water retaining plate. The relative inner walls of the rain collecting pipe are provided with limiting grooves slidably matched with the limiting blocks. A blocking ring is provided on the inner wall of the rain collecting pipe, and the inner walls of the blocking ring are enclosed to form a water inlet. A driving member is provided in each of the limiting grooves. When the driving member drives the limiting block to move to the end of the limiting groove close to the blocking ring, the surface of the water retaining plate abuts against the bottom surface of the blocking ring, and the water retaining plate blocks the water inlet.

[0014] By adopting the above technical solution, when the rain collecting bag is squeezed, the driving member drives the limit block to move upward, and the movement of the limit block drives the water baffle plate to abut against the blocking ring. At this time, the water inlet end of the rain collecting bag is in a closed state, thereby preventing rainwater from overflowing through the water inlet when the rain collecting bag is pressurized, ensuring that the rainwater in the rain collecting bag stably flows into the water outlet ring through the water supply pipe, thereby ensuring the stability of water outlet from the atomizing nozzle.

[0015] Optionally, the reset member is an elastic airbag filled with gas, the end of the elastic airbag away from the extrusion plate is fixedly connected to the inner wall of the slide groove, and the other end abuts the surface of the extrusion plate, the driving member is an airbag, the end of the airbag away from the limit block is fixedly connected to the inner wall of the limit groove, the elastic airbag is connected to the airbag through an air pipe, and when the airbag is inflated, the airbag pushes the limit block to move to the top of the limit groove, and the water baffle blocks the water inlet.

[0016] By adopting the above technical scheme, in the process that the cam pushes the extrusion plate to squeeze the rain collecting bag, the extrusion plate squeezes the elastic airbag, and the gas in the elastic airbag enters the airbag through the air pipe. The inflation of the airbag pushes the limit block to move upward, and the movement of the limit block drives the water baffle plate to block the water inlet, thereby ensuring the closure of the water inlet of the rain collecting bag, avoiding the situation that rainwater overflows through the water inlet when the rain collecting bag is pressurized, and ensuring the stability of water output from the atomizing nozzle; when the raised end of the cam is away from the extrusion plate, the pressure on the elastic airbag disappears, and the elastic airbag automatically resets and pushes the extrusion plate to reset. At the same time, the internal volume of the elastic airbag increases, and the air pressure decreases. The gas in the airbag flows into the elastic airbag driven by the air pressure. At this time, the water baffle plate moves downward driven by gravity, and the water inlet opens.

[0017] Optionally, a temperature sensor is provided at the end of the protective cover close to the cooling fan, and the temperature sensor is electrically connected to the driving motor and the suction pump through a control system.

[0018] By adopting the above technical solution, when the temperature sensor detects that the temperature inside the unit is too high, the temperature sensor automatically controls the drive motor and the suction pump to start automatically. At this time, the cleaning of the filter plate and the rainwater cooling are carried out simultaneously, which effectively improves the poor heat dissipation problem caused by the blockage of the filter plate, automatically realizes the cleaning of the filter plate and improves the heat dissipation effect of the unit.

[0019] Optionally, the outer surface of the shell is covered with sound insulation cotton.

[0020] By adopting the above technical solution, the noise generated by the operation of the equipment inside the shell is absorbed by the sound insulation cotton, the amount of noise transmitted to the surrounding environment is reduced, and the noise interference to the surrounding environment is reduced, so that the chiller can be better suitable for places with stricter noise requirements, thereby improving the user experience and the applicability of the chiller.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The embodiment of the present application is provided with a cleaning component, a driving motor, a driving gear and a driven gear ring. When the filter screen plate is blocked, the driving motor drives the driving gear to rotate, the driving gear drives the driven gear ring to rotate, and the driven gear ring drives the filter screen plate to rotate in the protective cover. During the rotation of the filter screen plate, the brush generates a circumferential displacement relative to the filter screen plate through the stationary cleaning plate. The brush cleans the dust and other impurities adhering to the filter screen plate, so that the dust and other impurities are separated from the filter screen plate, thereby avoiding the blockage of the filter screen plate, reducing the possibility that the internal heat of the unit cannot be dissipated in time, and reducing the energy loss of the variable frequency air-cooled chiller; 2. The present application sets a rain collecting bag, a water delivery pipe, a water outlet ring, an atomizing nozzle and an extrusion assembly. When the heat dissipation is poor due to the blockage of the filter screen, the extrusion assembly applies pressure to the rain collecting bag, forcing the rainwater stored in the rain collecting bag to flow to the water outlet ring through the water delivery pipe. Then the rainwater is sprayed to the cooling fan in the form of mist through multiple atomizing nozzles. The sprayed water mist is evenly sprinkled to the condenser and the surrounding area along with the air flow blown by the cooling fan. The water mist absorbs heat when it contacts with the high-temperature air, reduces the temperature inside the unit, and improves the heat dissipation effect inside the unit, thereby avoiding the compressor consuming power to compress the refrigerant, and further reducing energy loss. At the same time, compared with the use of other water sources for cooling, using collected rainwater is more energy-saving and environmentally friendly. 3. The present application sets a water-retaining assembly. When the rain-collecting bag is squeezed, the driving member drives the limit block to move upward. The movement of the limit block drives the water-retaining plate to abut against the blocking ring. At this time, the water inlet end of the rain-collecting bag is in a closed state, thereby preventing rainwater from overflowing through the water inlet when the rain-collecting bag is under pressure, ensuring that the rainwater in the rain-collecting bag stably flows into the water outlet ring through the water supply pipe, thereby ensuring the stability of the water outlet of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of this application.

[0023] Figure 2 It is a cross-sectional view of the protective cover, the equipment box and the mounting shell in the embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view of the slideway in the embodiment of the present application.

[0025] Figure 4 It is a cross-sectional view of the rainwater collecting pipe in the embodiment of the present application.

[0026] Explanation of reference numerals: 1. Shell; 101. Sound insulation cotton; 102. Heat dissipation port; 103. Cooling fan; 2. Protective cover; 3. Filter screen; 31. Driven gear ring; 4. Cleaning assembly; 41. Cleaning plate; 42. Connecting rod; 43. Dust suction plate; 431. Dust suction chamber; 432. Dust suction port; 5. Equipment box; 51. Suction pump; 511. Suction pipe; 52. Driving motor; 521. Driving gear ; 6. Mounting shell; 61. Slide groove; 7. Rain collecting bag; 71. Rain collecting pipe; 711. Limiting groove; 72. Water supply pipe; 73. Water outlet ring; 74. Atomizing nozzle; 8. Extrusion assembly; 81. Extrusion plate; 82. Elastic airbag; 83. Driven gear; 84. Cam; 9. Water retaining assembly; 91. Water retaining plate; 92. Limiting block; 93. Blocking ring; 931. Water inlet; 94. Airbag; 10. Air pipe. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiment of the present application discloses a variable frequency air-cooled chiller.

[0029] Reference Figure 1 and Figure 2 A variable frequency air-cooled chiller includes a shell 1, inside of which are installed a condenser and a variable frequency compressor and other equipment constituting a refrigeration system. The outer surface of the shell 1 is covered with sound insulation cotton 101. The sound insulation cotton 101 absorbs the noise generated by the equipment inside the shell 1 when it is running, reduces the amount of noise transmitted to the surrounding environment, and reduces the noise interference to the surrounding environment.

[0030] Reference Figure 1 and Figure 2 A heat dissipation port 102 communicating with the atmosphere is provided on the upper surface of the shell 1, and a heat dissipation fan 103 for heat dissipation is fixedly installed near the heat dissipation port 102 of the shell 1. The heat dissipation fan 103 accelerates the air flow around the condenser, thereby promoting better heat exchange between the refrigerant in the condenser and the air.

[0031] Reference Figure 1 and Figure 2A protective cover 2 connected to the heat dissipation port 102 is fixedly installed on the outer surface of the shell 1. The protective cover 2 is cylindrical. A filter plate 3 for blocking dust and other impurities is provided at the end of the protective cover 2 away from the heat dissipation fan 103. The filter plate 3 is circular and covers the opening of the protective cover 2.

[0032] Reference Figure 1 and Figure 2 A cleaning assembly 4 is arranged in the protective cover 2, and the cleaning assembly 4 includes a cleaning plate 41. The cleaning plate 41 is arranged at the end of the filter screen plate 3 away from the cooling fan 103. A plurality of brushes (not shown in the figure) are fixedly connected to the end surface of the cleaning plate 41 facing the filter screen plate 3, and each brush abuts against the surface of the filter screen plate 3. The center of the cleaning plate 41 is concentric with the center of the filter screen plate 3, and the length of the cleaning plate 41 is the same as the diameter of the filter screen plate.

[0033] Reference Figure 1 and Figure 2 A connecting rod 42 is fixedly connected to the cleaning plate 41 near the center of the filter screen plate 3. A through hole is provided on the filter screen plate 3. The end of the connecting rod 42 passes through the through hole and is fixedly connected to a dust suction plate 43. The dust suction plate 43 is arranged on the end surface of the filter screen plate 3 away from the cleaning plate 41. The center of the dust suction plate 43 is concentric with the center of the filter screen plate 3. A dust suction cavity 431 is provided inside the dust suction plate 43. A plurality of dust suction ports 432 are provided on the surface facing the dust suction plate 43. The plurality of dust suction ports 432 are evenly and equidistantly arranged along the length direction of the dust suction plate 43 and are connected to the dust suction cavity 431.

[0034] Reference Figure 1 and Figure 2 , an equipment box 5 is fixedly installed on the upper surface of the shell 1, an air suction pump 51 is fixedly installed in the equipment box 5, the air suction end of the air suction pump 51 is connected to the dust suction chamber 431 through the air suction pipe 511, a driving motor 52 is fixedly installed in the equipment box 5, and the output shaft of the driving motor 52 is coaxially fixedly connected with a driving gear 521, a driven gear ring 31 is fixedly sleeved on the outer surface of the filter screen plate 3, the driving gear 521 is meshed with the driven gear ring 31, a groove (not shown in the figure) for rotationally cooperating with the driving gear 521 is opened on the outer surface of the equipment box 5, a rotating ring (not shown in the figure) is fixedly connected to the bottom surface of the filter screen plate 3 facing the dust suction plate 43, a rotating groove (not shown in the figure) for rotationally cooperating with the rotating ring is opened on the side wall of the protective cover 2, and a temperature sensor (not shown in the figure) is fixedly installed at the end of the protective cover 2 close to the cooling fan 103, and the temperature sensor control system is electrically connected to the driving motor 52.

[0035] When the filter screen plate 3 is clogged, the heat inside the housing 1 cannot be discharged smoothly through the filter screen plate 3, and the temperature of the end of the protective cover 2 close to the cooling fan 103 rises. The temperature sensor detects the high temperature signal and controls the driving motor 52 and the suction pump 51 to automatically start. The driving motor 52 drives the active gear 521 to rotate, and the active gear 521 drives the driven gear ring 31 to rotate. The driven gear ring 31 drives the filter screen plate 3 to rotate in the protective cover 2. During the rotation of the filter screen plate 3, the brush generates a circumferential displacement relative to the filter screen plate 3 through the stationary cleaning plate 41, and the brush cleans the dust and other impurities adhering to the filter screen plate 3, so that the dust and other impurities are separated from the filter screen plate 3. At the same time, the air suction pump 51 is started to generate negative pressure inside the dust suction chamber 431 through the air suction pipe 511. Since the cleaning plate 41 is connected to the dust suction plate 43 through the connecting rod 42, during the rotation of the filter plate 3, the dust suction plate 43 is stationary relative to the cleaning plate 41. Driven by the negative pressure, the dust remaining on the filter plate 3 and the dust cleaned by the brush enter the dust suction chamber 431 through the dust suction port 432. When the filter plate 3 rotates one circle, the cleaning component 4 cleans the filter plate 3 in all directions, thereby avoiding clogging of the filter plate 3, reducing the possibility that the heat inside the unit cannot be dissipated in time, and reducing the energy loss of the variable frequency air-cooled chiller.

[0036] Reference Figure 1 and Figure 2 A mounting shell 6 is fixedly installed on the shell body 1, and a rain collecting bag 7 for storing rainwater is fixed on the inner wall of the mounting shell 6. A rain collecting pipe 71 connected to the outside is installed on the rain collecting bag 7. A water filter plate (not shown in the figure) for filtering rainwater is fixedly installed inside the rain collecting pipe 71. A water supply pipe 72 is installed on the outer surface of the rain collecting bag 7. A mounting groove (not shown in the figure) is opened on the inner wall of the protective cover 2 near the cooling fan 103. The end of the water supply pipe 72 extends into the mounting groove and is connected to a water outlet ring 73. The water outlet ring 73 is fixedly installed inside the mounting groove. A plurality of atomizing nozzles 74 are evenly and equidistantly installed on the inner surface of the water outlet ring 73. The water outlet directions of the plurality of atomizing nozzles 74 are all arranged toward the cooling fan 103. An extrusion component 8 for extruding the rain collecting bag 7 is arranged in the mounting shell 6. In the present embodiment, the end of the rain collecting bag 7 near the extrusion component 8 is made of elastic material, and the elastic part of the rain collecting bag 7 is corrugated.

[0037] Reference Figure 2 and Figure 3The extrusion assembly 8 includes an extrusion plate 81 slidably arranged in the mounting shell 6, and a slide groove 61 slidably matched with the extrusion plate 81 is provided on the inner side wall opposite to the mounting shell 6. The slide groove 61 is horizontally arranged, and a reset member is arranged in each slide groove 61. The output end of the reset member abuts against the surface of the extrusion plate 81, and a driven gear 83 is meshed on the outer surface of the driven gear ring 31. A cam 84 is coaxially fixedly connected to the driven gear 83. The driven gear 83 and the cam 84 are both rotatably connected to the inside of the mounting shell 6. When the reset member is in a natural state, the extrusion surface of the extrusion plate 81 fits the elastic surface of the rain collecting bag 7, and the rain collecting bag 7 is in an unpressurized state. When the cam 84 rotates until the protruding end abuts against the outer surface of the extrusion plate 81, the reset member is in an energy storage state, and the extrusion plate 81 squeezes the rain collecting bag 7.

[0038] When the driving motor 52 drives the driven gear ring 31 to rotate through the driving gear 521, the driven gear ring 31 drives the driven gear 83 to rotate, and the driven gear 83 drives the cam 84 to rotate. When the raised end of the cam 84 rotates toward the extrusion plate 81, the cam 84 pushes the extrusion plate 81 to move along the length direction of the slide groove 61 toward the direction of the rain collecting bag 7. At this time, the reset member is in an energy storage state, and the elastic part of the rain collecting bag 7 is squeezed and deformed. The volume inside the rain collecting bag 7 becomes smaller and the water level rises. At this time, rainwater flows to the water outlet ring 73 through the water supply pipe 72, and then the rainwater is sprayed to the cooling fan 103 in a mist form through a plurality of atomizing nozzles 74. The sprayed water mist is evenly sprinkled to the condenser and the surrounding area with the air flow blown by the cooling fan 103. The water mist absorbs heat when it contacts with the high-temperature air, reduces the temperature inside the unit, and improves the heat dissipation effect inside the unit, thereby avoiding the compressor consuming power to compress the refrigerant, and further reducing energy loss. At the same time, compared with the use of other water sources for cooling, using collected rainwater is more energy-saving and environmentally friendly. When the raised end of the cam 84 rotates to move away from the extrusion plate 81, the reset member releases energy to push the extrusion plate 81 to move in the direction away from the rain collecting bag 7, the pressurized state of the rain collecting bag 7 disappears, the volume inside the rain collecting bag 7 is restored, and the water path connecting the water outlet ring 73, the water supply pipe 72 and the rain collecting bag 7 is in a stable state. The setting of the extrusion assembly 8 realizes the simultaneous cleaning of the filter screen plate 3 by the cleaning plate 41 and the intermittent extrusion of the rain collecting bag 7 by the extrusion assembly 8, thereby improving the heat dissipation effect of the unit when the filter screen plate 3 is blocked.

[0039] Reference Figure 2 , Figure 3 and Figure 4A water retaining assembly 9 is provided in the rain collecting pipe 71, and the water retaining assembly 9 includes a water retaining plate 91 slidably connected in the rain collecting pipe 71, and the opposite outer surfaces of the water retaining plate 91 are fixedly connected to the limiting blocks 92, and the limiting blocks 92 and the water retaining plate 91 are integrally formed. A limiting groove 711 that slidably cooperates with the limiting blocks 92 is provided on the opposite inner side walls of the rain collecting pipe 71, and the length direction of the limiting groove 711 is parallel to the length direction of the rain collecting pipe 71. A blocking ring 93 is fixedly connected to the inner side wall of the rain collecting pipe 71, and the inner side walls of the blocking ring 93 are enclosed to form a water inlet 931. The cross-sectional area of ​​the water retaining plate 91 is larger than the cross-sectional area of ​​the water inlet 931 and smaller than the cross-sectional area of ​​the rain collecting pipe 71.

[0040] Reference Figure 2 , Figure 3 and Figure 4 A driving member is provided in each limit groove 711, and the driving member is an airbag 94. The end of the airbag 94 away from the limit block 92 is fixedly connected to the inner wall of the limit groove 711. The reset member in each slide groove 61 is an elastic airbag 82. The elastic airbag 82 is filled with gas. The end of the elastic airbag 82 away from the extrusion plate 81 is fixedly connected to the inner wall of the slide groove 61. The elastic airbag 82 is connected to the adjacent airbag 94 through the air pipe 10. When the airbag 94 is in an inflated state, the airbag 94 pushes the limit block 92 to move to the top of the limit groove 711. At this time, the surface of the water baffle 91 abuts against the bottom surface of the blocking ring 93, and the water baffle 91 blocks the water inlet 931.

[0041] In the process of the cam 84 pushing the squeezing plate 81 to squeeze the rain collecting bag 7, the squeezing plate 81 continuously squeezes the elastic air bag 82, the internal volume of the elastic air bag 82 decreases, the air pressure increases, and the gas in the elastic air bag 82 enters the air bag 94 through the air pipe 10 under the push of the air pressure. The inflation of the air bag 94 pushes the limit block 92 to move upward, and the movement of the limit block 92 drives the water baffle plate 91 to block the water inlet 931, thereby ensuring the closure of the water inlet 931 of the rain collecting bag 7, avoiding the overflow of rainwater through the water inlet 931 when the rain collecting bag 7 is pressurized, ensuring the stability of the water outlet of the atomizing nozzle 74, and further ensuring the heat dissipation effect of rainwater on the unit; When the raised end of the cam 84 is away from the extrusion plate 81, the pressure on the elastic airbag 82 disappears, and the elastic airbag 82 recovers its deformation under the action of its own elastic force. At this time, the elastic airbag 82 pushes the extrusion plate 81 to reset. At the same time, the internal volume of the elastic airbag 82 increases, and the air pressure decreases. The gas in the airbag 94 flows into the elastic airbag 82 driven by the air pressure. At this time, the water baffle 91 moves downward driven by gravity, and a water inlet gap is formed between the water baffle 91 and the blocking ring 93. The water inlet 931 is in an open state, thereby ensuring that rainwater can smoothly enter the rain collecting bag 7 for storage.

[0042] The implementation principle of a variable frequency air-cooled chiller in the embodiment of the present application is as follows: when the filter screen plate 3 is clogged, the heat inside the housing 1 cannot be discharged smoothly through the filter screen plate 3, and the temperature of the end of the protective cover 2 close to the cooling fan 103 increases. The temperature sensor detects the high temperature signal and controls the drive motor 52 and the suction pump 51 to automatically start, and the drive motor 52 drives the active gear 521 to rotate, and the active gear 521 drives the driven gear ring 31 to rotate, and the driven gear ring 31 drives the filter screen plate 3 to rotate in the protective cover 2. During the rotation of the filter screen plate 3, the brush generates a circumferential displacement relative to the filter screen plate 3 through the stationary cleaning plate 41, and the brush cleans the dust and other impurities adhering to the filter screen plate 3, so that the dust and other impurities are separated from the filter screen plate 3; At the same time, the air suction pump 51 is started to generate negative pressure inside the dust suction chamber 431 through the air suction pipe 511. Since the cleaning plate 41 is connected to the dust suction plate 43 through the connecting rod 42, during the rotation of the filter plate 3, the dust suction plate 43 is stationary relative to the cleaning plate 41. Driven by the negative pressure, the dust remaining on the filter plate 3 and the dust cleaned by the brush enter the dust suction chamber 431 through the dust suction port 432. When the filter plate 3 rotates one circle, the cleaning component 4 cleans the filter plate 3 in all directions, thereby avoiding clogging of the filter plate 3, reducing the possibility that the heat inside the unit cannot be dissipated in time, and reducing the energy loss of the variable frequency air-cooled chiller.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A variable frequency air-cooled chiller, comprising a housing (1), a cooling fan (103) being arranged in the housing (1), a cooling port (102) being provided on the housing (1), a protective cover (2) being arranged on the outer surface of the housing (1) and being connected to the cooling port (102), a filter screen (3) being arranged on the protective cover (2), characterized in that: A cleaning assembly (4) is arranged in the protective cover (2), and the cleaning assembly (4) comprises a cleaning plate (41) arranged at the end of the filter screen plate (3) away from the cooling fan (103), and a plurality of brushes are arranged on the cleaning plate (41), and the plurality of brushes all contact the surface of the filter screen plate (3), and the length of the cleaning plate (41) is the same as the diameter of the filter screen plate (3). The filter screen plate (3) is rotatably arranged on the protective cover (2), and a driven gear ring (31) is fixedly sleeved on the outer surface of the filter screen plate (3). A driving motor (52) is arranged on the housing (1), and the output shaft of the driving motor (52) is provided with a driving gear (521) meshed with the driven gear ring (31).

2. A variable frequency air-cooled chiller according to claim 1, characterized in that: The cleaning assembly (4) further comprises a dust suction plate (43), the dust suction plate (43) being arranged on the end surface of the filter screen plate (3) facing away from the cleaning plate (41), a dust suction chamber (431) being provided in the dust suction plate (43), a plurality of dust suction ports (432) being provided on the surface of the dust suction plate (43) facing the filter screen plate (3), the plurality of dust suction ports (432) being connected to the dust suction chamber (431), a connecting rod (42) being provided between the dust suction plate (43) and the cleaning plate (41), a through hole being provided on the filter screen plate (3) for rotatably cooperating with the connecting rod (42), an air suction pump (51) being provided on the housing (1), and an air suction end of the air suction pump (51) being connected to the dust suction chamber (431) via an air suction pipe (511).

3. The variable frequency air-cooled chiller according to claim 1, characterized in that: The shell (1) is provided with a mounting shell (6), a rainwater collecting bag (7) for storing rainwater is provided inside the mounting shell (6), a rainwater collecting pipe (71) communicating with the outside is provided on the rainwater collecting bag (7), a water supply pipe (72) is provided in communication with the rainwater collecting bag (7), a water outlet end of the water supply pipe (72) extends into the protective cover (2) and is in communication with a water outlet ring (73), a plurality of atomizing nozzles (74) are provided on the water outlet ring (73), the water outlet direction of the atomizing nozzles (74) is arranged toward the cooling fan (103), and an extrusion assembly (8) for extruding the rainwater collecting bag (7) is provided inside the mounting shell (6).

4. The variable frequency air-cooled chiller according to claim 3, characterized in that: The extrusion assembly (8) comprises an extrusion plate (81) slidably arranged in the mounting shell (6); the portion of the rain collecting bag (7) facing the extrusion plate (81) is made of an elastic material; a slide groove (61) slidably matched with the extrusion plate (81) is provided on the inner side wall opposite to the mounting shell (6); a reset member is provided in each of the slide grooves (61); the output end of the reset member abuts against the extrusion plate (81); and a driven gear is provided on the outer surface of the driven gear ring (31) in meshing engagement with the driven gear. (83), a cam (84) is coaxially fixedly connected to the driven gear (83), and the cam (84) is rotatably arranged inside the mounting shell (6). When the reset member is in a natural state, the extrusion surface of the extrusion plate (81) is in contact with the rain collecting bag (7), and the rain collecting bag (7) is in an unpressurized state. When the cam (84) rotates until the protruding end abuts against the outer surface of the extrusion plate (81), the reset member is in an energy storage state, and the extrusion plate (81) squeezes the rain collecting bag (7).

5. The variable frequency air-cooled chiller according to claim 4, characterized in that: A water retaining assembly (9) is arranged in the rain collecting pipe (71), and the water retaining assembly (9) comprises a water retaining plate (91) slidably connected in the rain collecting pipe (71); the opposite outer surfaces of the water retaining plate (91) are provided with limit blocks (92); the opposite inner side walls of the rain collecting pipe (71) are provided with limit grooves (711) slidably matched with the limit blocks (92); the inner side walls of the rain collecting pipe (71) are provided with a stop ring (93); the inner side walls of the stop ring (93) are enclosed to form a water inlet (931); each of the limit grooves (711) is provided with a driving member; when the driving member drives the limit block (92) to move to the end of the limit groove (711) close to the stop ring (93), the surface of the water retaining plate (91) abuts against the bottom surface of the stop ring (93), and the water retaining plate (91) blocks the water inlet (931).

6. A variable frequency air-cooled chiller according to claim 5, characterized in that: The reset member is an elastic airbag (82), the elastic airbag (82) is filled with gas, the end of the elastic airbag (82) away from the extrusion plate (81) is fixedly connected to the inner wall of the slide groove (61), and the other end abuts against the surface of the extrusion plate (81); the driving member is an airbag (94), the end of the airbag (94) away from the limit block (92) is fixedly connected to the inner wall of the limit groove (711); the elastic airbag (82) is connected to the airbag (94) through an air pipe (10); when the airbag (94) is inflated, the airbag (94) pushes the limit block (92) to move to the top of the limit groove (711), and the water retaining plate (91) blocks the water inlet (931).

7. The variable frequency air-cooled chiller according to claim 2, characterized in that: A temperature sensor is provided at the end of the protective cover (2) close to the cooling fan (103), and the temperature sensor is electrically connected to the driving motor (52) and the suction pump (51) through a control system.

8. The variable frequency air-cooled chiller according to claim 1, characterized in that: The outer surface of the shell (1) is covered with sound insulation cotton (101).

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