CN110671769B - Control method of water-cooling integrated water chiller with variable-frequency hydraulic module - Google Patents
Control method of water-cooling integrated water chiller with variable-frequency hydraulic module Download PDFInfo
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- CN110671769B CN110671769B CN201911019488.1A CN201911019488A CN110671769B CN 110671769 B CN110671769 B CN 110671769B CN 201911019488 A CN201911019488 A CN 201911019488A CN 110671769 B CN110671769 B CN 110671769B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
Abstract
The invention discloses a control method of a water-cooling integrated water chiller with a variable-frequency hydraulic module, which comprises a water-cooling water chiller, a cooling tower matched with the water-cooling water chiller, the variable-frequency hydraulic module, a controller and a frequency converter, wherein the water-cooling water chiller comprises a compressor, a condenser, an evaporator and a throttling device; by adjusting the variable-frequency chilled water pump, the chilled water flow and the chilled water pump power are changed according to the actual conditions, the chilled water pump power is greatly reduced under partial load, and the actual operation energy consumption ratio of the chilled water pump and the cooling tower is reduced.
Description
Technical Field
The invention belongs to the technical field of air conditioning refrigeration, and particularly relates to a control method of a water-cooling integrated water chiller with a variable-frequency hydraulic module.
Background
The global climate is gradually warmed, the energy is increasingly tense, the traditional energy is gradually exhausted, and the energy conservation and pollution reduction are the main problems facing the world.
At present, the energy policy of China is to develop and save simultaneously, and the saving is put at the head. With the development of economy and the improvement of living standard of people, the application of the central air conditioner is increasingly wide, the production and living environment is greatly improved, but the problem of energy consumption is also highlighted.
The traditional water-cooling water chilling unit must be configured with a special air conditioner room, meanwhile, because the pipeline between the cooling tower and the water chilling unit is long, the power consumption of the cooling water pump is large, and in the actual engineering project, the refrigeration water pump, the cooling water pump and the cooling tower are often configured excessively, and the energy consumption of an air conditioning system is high.
Because the water chilling unit and the freezing water pump, the cooling water pump and the cooling tower are purchased from different equipment manufacturers, a centralized control system is lacked, the air conditioning system is in a partial load operation state for 99 percent of time, and when a compressor of the water chilling unit is unloaded or stopped, the freezing water pump, the cooling water pump and the cooling tower are still in full load operation, so the annual operation efficiency is low. According to statistics of a large number of air conditioning engineering projects, the installed power of the chilled water pump, the cooling water pump and the cooling tower only accounts for about 15% of the installed power of the whole air conditioning system, but the actual operation energy consumption accounts for about 40%, and therefore the importance of the connection between the water chilling unit and the chilled water pump, the cooling water pump and the cooling tower is seen.
Meanwhile, the air conditioning system is in a partial load operation state 99% of the time, and the frequency and the rotating speed of the chilled water pump cannot be adjusted when the chilled water pump adopts a fixed-frequency water pump, so that the chilled water flow and the chilled water pump power are kept unchanged all the time, and the operation energy consumption is higher. If frequency conversion control can be adopted, the power of the chilled water pump can be reduced greatly under partial load because the power of the chilled water pump and the rotating speed are in a cubic relation.
Disclosure of Invention
The invention provides a control method of a water-cooling integrated water chiller with a variable-frequency hydraulic module, aiming at overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a control method of a water-cooling integrated water chiller with a variable-frequency hydraulic module comprises the steps that the water-cooling integrated water chiller with the variable-frequency hydraulic module comprises a water-cooling water chiller, a cooling tower matched with the water-cooling water chiller, the variable-frequency hydraulic module, a controller and a frequency converter, the water-cooling water chiller comprises a compressor, a condenser, an evaporator and a throttling device, the variable-frequency hydraulic module comprises a water supplementing valve, a water filter, a variable-frequency freezing water pump and an expansion tank, a freezing water inlet temperature sensor is arranged at a water inlet of the evaporator, and a freezing water outlet temperature sensor is arranged at a water outlet of the evaporator; the unit controller controls the frequency of the frequency converter and the freezing water pump by detecting the temperature difference between the freezing inlet water temperature and the freezing outlet water temperature, when the temperature difference exceeds a set value, the frequency of the frequency converter and the freezing water pump is increased, and when the temperature difference is lower than the set value, the frequency of the frequency converter and the freezing water pump is reduced; through the arrangement of the variable-frequency chilled water pump, the frequency of the chilled water pump can be adjusted according to actual conditions, so that the linkage of the chilled water pump and a cooling tower is realized, and the energy consumption of a unit is reduced; by adjusting the variable-frequency chilled water pump, the chilled water flow and the chilled water pump power are changed according to the actual conditions, the chilled water pump power is greatly reduced under partial load, and the actual operation energy consumption ratio of the chilled water pump and the cooling tower is reduced.
A cooling water pump is arranged at a water inlet of the condenser, and the condenser is connected with the cooling tower; when the compressor is in partial load operation or the outlet water temperature of the cooling water is lower than a set value, the unit controller automatically unloads the operation number of the fans of the cooling tower; when the compressor is stopped, the cooling water pump and the fan of the cooling tower 5 automatically stop running after a certain time delay.
The water filter comprises a shell and a mounting block arranged on the shell, wherein a first filter plate and a second filter plate are arranged in the shell, filter holes in the first filter plate and the second filter plate are arranged in a staggered mode, a material receiving groove is formed in the bottom of the mounting block, and a first through groove and a second through groove which are communicated with the material receiving groove are formed in the inner wall of the shell; under the arrangement of the two layers of filter plates, the filtering effect on the cooling water is improved, so that impurities in the cooling water are filtered, and the influence on the operation of the unit caused by the impurities entering the unit is prevented; first filter is when filtering rivers, rivers pass through from the filtration pore on the first filter, the filtration pore inner wall on first filter of part impurity adhesion, the part adhesion is strikeed to second filter position department under the impact of rivers in the filtration pore impurity on first filter, will follow the impurity of dashing out in the first filter filtration pore under the second filter effect and do and block, make impurity follow the second and lead to the inslot and fall into to connecing the silo, effectually prevent that impurity from entering into the unit, so that do the clearance to impurity.
The top of the mounting block is provided with a first through cavity, the top of the mounting block is provided with a mounting plate, the mounting plate is fixedly connected to the mounting block, and the first filter plate and the second filter plate are detachably connected to the mounting plate; the first filter plate and the second filter plate are positioned through the mounting plate, so that the first filter plate and the second filter plate are vertically fixed in the shell, water flow passing through the shell is filtered, and the filtering effect of the water filter on the water flow is improved; through being connected of filter and mounting panel, can be convenient pull down the filter from the mounting panel, and then do the clearance to the filter to get rid of the impurity on the filter, guarantee the filter effect of filter.
The bottom of the mounting plate is provided with a first connecting groove, the first filter plate is provided with a first connecting plate matched with the first connecting groove, the inner wall of the first connecting groove is provided with a limiting assembly, and the side wall of the first connecting plate is provided with a limiting groove matched with the limiting assembly; when installing first filter, insert the spread groove with first connecting plate in, make spacing subassembly and spacing groove form the cooperation, it is fixed with first connecting plate under spacing subassembly effect to install first filter on the mounting panel, so that fix first filter in the casing, guarantee the filter effect of first filter to rivers.
A first movable groove is formed in the inner wall of the first connecting groove, the limiting assembly comprises a limiting spring arranged in the first movable groove, a first limiting plate arranged at one end of the limiting spring and a limiting block arranged on the first limiting plate, a cambered surface is arranged at the bottom of the limiting block, a second movable groove is formed in the top of the first movable groove, and the first limiting plate penetrates through the second movable groove; when the first connecting plate is inserted into the connecting groove, the top of the first connecting plate is contacted with the bottom of the limiting block, the limiting block is pushed to move towards the first movable groove under the action of the first connecting plate, so that the first connecting plate smoothly enters the first connecting groove, and the limiting block is pushed into the limiting groove under the action of a limiting spring after the limiting groove moves to one side of the limiting block, so that the first connecting plate is fixed by the limiting block, and the first filter plate is installed; when clearing up first filter, promote first limiting plate along second activity inslot wall, make the stopper deviate from the spacing inslot to take out first connecting plate from first connecting-groove, and then can be convenient do the clearance to first filter.
A second connecting groove matched with the first connecting groove is formed in the mounting plate, a fixing plate is arranged in the second connecting groove, a first groove is formed in the inner wall of the second connecting groove, and a connecting block matched with the first groove is arranged on the side wall of the fixing plate; a second connecting plate is rotatably connected to the first limiting plate, and a supporting plate is arranged on the second connecting plate; after the first connecting plate is inserted into the first connecting groove, the fixing plate is inserted into the second connecting groove, the first connecting groove is sealed under the action of the fixing plate, water flow is prevented from overflowing from the first connecting groove, the connecting effect of the fixing plate and the second connecting groove is improved under the mutual matching of the connecting blocks and the first grooves, and the connecting effect of the first connecting plate and the first connecting groove is improved; after the first connecting plate forms to be connected the cooperation with first connecting groove, rotate the second connecting plate, make the second connecting plate rotate to be the vertical state with the limiting plate, contact on backup pad and the second activity inslot wall, play the supporting role to the limiting plate under the backup pad effect, promote the cooperation effect of stopper and spacing groove.
A first movable cavity is formed in the first connecting plate, a first push plate penetrates through the first movable cavity, a sliding groove is formed in the inner wall of the first movable cavity, a sliding block matched with the sliding groove is arranged on the side wall of the first push plate, a reset spring is arranged on the sliding block, a through cavity communicated with the first movable cavity is formed in the top of the limiting groove, a push block is arranged in the through cavity, and a third connecting plate is rotatably connected to the first connecting plate; first connecting plate is connected in first connecting groove back, the third connecting plate is worn to locate in the second connecting groove, rotate the third connecting plate around the tie point, make the third connecting plate rotate to the second connecting groove in, the stopper contacts with the ejector pad, make the stopper promote the ejector pad up motion, the ejector pad promotes first push pedal and stretches out from first activity intracavity, make first push pedal and third connecting plate contact, play limiting displacement to the third connecting plate, make the unable rotation of third connecting plate, make first push pedal and fixed plate mutually support and fix the third connecting plate, promote the bandwagon effect of first connecting plate and first connecting groove.
A fourth connecting plate is arranged on the mounting plate, a second movable cavity is arranged in the fourth connecting plate, a fifth connecting plate matched with the first filter plate is arranged in the second movable cavity, a plurality of third movable grooves corresponding to the filter holes in the first filter plate are arranged on the fifth connecting plate, vertical rods are arranged in the third movable grooves, a second limiting plate is arranged at one end of each vertical rod, and a connecting spring is arranged on each second limiting plate; after the filter is used for a period of time, the fifth connecting plate is pushed downwards to move to one side of the first filter plate, water flow enters from one end of the shell, the water flow impacts on the team connecting plate, the second limiting plate is pushed to move towards the outer side of the third movable groove under the action of the water flow, and the vertical rod is inserted into the filter hole of the first filter plate, so that the filter hole in the first filter plate can be cleaned, and the filter hole in the first filter plate can be prevented from being blocked; after the first filter plate is cleaned, water flow is temporarily closed, the vertical rod is pushed to move towards the third movable groove under the action of the connecting spring, the vertical rod enters the third movable groove, the fifth connecting plate is lifted upwards, the fifth connecting plate enters the second movable cavity, and the filter works normally.
A second groove is formed in the bottom of the mounting plate, a scraper is arranged in the second groove and is arranged between the first filter plate and the second filter plate, a first through hole is formed in the top of the second groove, a push rod matched with the first through hole is arranged at the top of the scraper, a third limiting plate is arranged at the top of the push rod, a first supporting spring is arranged at the bottom of the third limiting plate, and a first protective sleeve is sleeved on the outer side of the first supporting spring; after the montant cleared up the filtration pore on to first filter, promote the push rod downstream, make the push rod promote the scraper blade downstream, the scraper blade contacts with first filter and second filter plate surface during downstream, will adhere to the impurity on first filter and second filter and strike off, so that collect the impurity on first filter and the second filter and connect the inslot, make first filter and second filter can accomplish the clearance in the casing, reduce the clearance degree of difficulty to first filter and second filter, guarantee the filter effect of filter.
The invention has the following advantages: through the arrangement of the variable-frequency chilled water pump, the frequency of the chilled water pump can be adjusted according to actual conditions, so that the linkage of the chilled water pump and a cooling tower is realized, and the energy consumption of a unit is reduced; by adjusting the variable-frequency chilled water pump, the chilled water flow and the chilled water pump power are changed according to the actual conditions, the chilled water pump power is greatly reduced under partial load, and the actual operation energy consumption ratio of the chilled water pump and the cooling tower is reduced.
Drawings
FIG. 1 is a system schematic diagram of a water-cooling integrated water chiller with a variable-frequency hydraulic module according to the invention.
Fig. 2 is a schematic flow diagram of a water-cooling integrated water chiller with a variable-frequency hydraulic module according to the invention.
Fig. 3 is a schematic structural view of the water filter of the present invention.
Fig. 4 is an enlarged view of a portion a in fig. 3.
FIG. 5 is a first cross-sectional view of the water filter of the present invention.
Fig. 6 is an enlarged view of fig. 5 at B.
Fig. 7 is an enlarged view of fig. 5 at C.
FIG. 8 is a schematic sectional view of a water filter according to the present invention.
FIG. 9 is a third schematic sectional view of a water filter according to the present invention.
Fig. 10 is an enlarged view of fig. 9 at D.
Detailed Description
As shown in fig. 1-10, a control method of a water-cooling integrated chiller with a variable-frequency hydraulic module includes a water-cooling chiller, a cooling tower 50 matched with the water-cooling chiller, a variable-frequency hydraulic module, a controller and a frequency converter, the compressor may be a fixed-frequency compressor or a variable-frequency compressor, the water-cooling chiller includes a compressor 10, a condenser 20, an evaporator 40 and a throttling device 30, the throttling device may be an electronic expansion valve, a thermal expansion valve or a hole plate, the variable-frequency hydraulic module includes a water replenishing valve 601, a water filter, a variable-frequency chilled water pump 603 and an expansion tank 602, a chilled inlet water temperature sensor 401 is disposed at a water inlet of the evaporator 40, and a chilled outlet water temperature sensor 402 is disposed at a water outlet of the evaporator 40; the unit controller controls the frequency of the frequency converter and the freezing water pump 603 by detecting the temperature difference between the freezing inlet water temperature and the freezing outlet water temperature, when the temperature difference exceeds a set value, the frequency of the frequency converter and the freezing water pump 603 is increased, and when the temperature difference is lower than the set value, the frequency of the frequency converter and the freezing water pump 603 is reduced; through the arrangement of the variable-frequency chilled water pump, the frequency of the chilled water pump can be adjusted according to actual conditions, so that the linkage of the chilled water pump and a cooling tower is realized, and the energy consumption of a unit is reduced; by adjusting the variable-frequency chilled water pump, the chilled water flow and the chilled water pump power are changed according to the actual conditions, the chilled water pump power is greatly reduced under partial load, and the actual operation energy consumption ratio of the chilled water pump and the cooling tower is reduced.
A cooling water pump 501 is arranged at a water inlet of the condenser 20, and the condenser 20 is connected with the cooling tower 50; when the compressor 10 is in partial load operation or the outlet water temperature of the cooling water is lower than a set value, the unit controller automatically unloads the operation number of the fans of the cooling tower 50; when the compressor 10 is stopped, the cooling water pump 501 and the fan of the cooling tower 50 are automatically stopped after a certain time delay.
The frequency conversion chilled water pump and the cooling water pump can be single or used and prepared.
Controlling the operation capacity of the compressor according to the variation rate of the freezing inlet water temperature (Twi), the freezing outlet water temperature (Two) and the difference between the actual value and the target value, and automatically adjusting the freezing water temperature control target value when the operation capacity of the compressor is less than 60%.
The water filter comprises a shell 1 and a mounting block 2 arranged on the shell 1, a first filter plate 24 and a second filter plate 23 are arranged in the shell 1, filter holes in the first filter plate 24 and the second filter plate 23 are arranged in a staggered mode, a material receiving groove is formed in the bottom of the mounting block 2, and a first through groove and a second through groove which are communicated with the material receiving groove are formed in the inner wall of the shell 1; the first through groove is formed in the bottom of the first filter plate, the second through groove is formed between the first filter plate and the second filter plate, the material receiving box 22 is arranged in the material receiving groove, the material receiving box is provided with a lock catch, and the material receiving box is fixed on the mounting block through the lock catch so as to ensure the sealing effect of the material receiving box on the material receiving groove; under the arrangement of the two layers of filter plates, the filtering effect on the cooling water is improved, so that impurities in the cooling water are filtered, and the influence on the operation of the unit caused by the impurities entering the unit is prevented; first filter is when filtering rivers, rivers pass through from the filtration pore on the first filter, the filtration pore inner wall on first filter of part impurity adhesion, the part adhesion is strikeed to second filter position department under the impact of rivers in the filtration pore impurity on first filter, will follow the impurity of dashing out in the first filter filtration pore under the second filter effect and do and block, make impurity follow the second and lead to the inslot and fall into to connecing the silo, effectually prevent that impurity from entering into the unit, so that do the clearance to impurity.
The top of the mounting block 2 is provided with a first through cavity, the top of the mounting block 2 is provided with a mounting plate 21, the mounting plate 21 is fixedly connected to the mounting block 2, and the first filter plate 24 and the second filter plate 23 are detachably connected to the mounting plate 21; the first filter plate and the second filter plate are positioned through the mounting plate, so that the first filter plate and the second filter plate are vertically fixed in the shell, water flow passing through the shell is filtered, and the filtering effect of the water filter on the water flow is improved; through being connected of filter and mounting panel, can be convenient pull down the filter from the mounting panel, and then do the clearance to the filter to get rid of the impurity on the filter, guarantee the filter effect of filter.
The bottom of the mounting plate 21 is provided with a first connecting groove, the first filter plate 24 is provided with a first connecting plate 220 matched with the first connecting groove, the inner wall of the first connecting groove is provided with a limiting component, and the side wall of the first connecting plate 220 is provided with a limiting groove matched with the limiting component; when installing first filter, insert the spread groove with first connecting plate in, make spacing subassembly and spacing groove form the cooperation, it is fixed with first connecting plate under spacing subassembly effect to install first filter on the mounting panel, so that fix first filter in the casing, guarantee the filter effect of first filter to rivers.
A first movable groove is formed in the inner wall of the first connecting groove, the limiting assembly comprises a limiting spring 2402 arranged in the first movable groove, a first limiting plate 240 arranged at one end of the limiting spring 2402 and a limiting block 2401 arranged on the first limiting plate 240, an arc surface is arranged at the bottom of the limiting block 2401, a second movable groove is formed in the top of the first movable groove, and the first limiting plate 240 is arranged in the second movable groove in a penetrating mode; when the first connecting plate is inserted into the connecting groove, the top of the first connecting plate is contacted with the bottom of the limiting block, the limiting block is pushed to move towards the first movable groove under the action of the first connecting plate, so that the first connecting plate smoothly enters the first connecting groove, and the limiting block is pushed into the limiting groove under the action of a limiting spring after the limiting groove moves to one side of the limiting block, so that the first connecting plate is fixed by the limiting block, and the first filter plate is installed; when clearing up first filter, promote first limiting plate along second activity inslot wall, make the stopper deviate from the spacing inslot to take out first connecting plate from first connecting-groove, and then can be convenient do the clearance to first filter.
A second connecting groove matched with the first connecting groove is formed in the mounting plate 21, a fixing plate 28 is arranged in the second connecting groove, a first groove is formed in the inner wall of the second connecting groove, and a connecting block 282 matched with the first groove is arranged on the side wall of the fixing plate 28; the fixing plate is provided with a bump 281, the bump is arranged so as to be convenient for taking out the second connecting groove of the fixing plate, and the bottom of the fixing plate is provided with a sealing gasket which is made of rubber; a second connecting plate 250 is rotatably connected to the first limiting plate 240, and a supporting plate 2501 is arranged on the second connecting plate 250; after the first connecting plate is inserted into the first connecting groove, the fixing plate is inserted into the second connecting groove, the first connecting groove is sealed under the action of the fixing plate, water flow is prevented from overflowing from the first connecting groove, the connecting effect of the fixing plate and the second connecting groove is improved under the mutual matching of the connecting blocks and the first grooves, and the connecting effect of the first connecting plate and the first connecting groove is improved; after the first connecting plate forms to be connected the cooperation with first connecting groove, rotate the second connecting plate, make the second connecting plate rotate to be the vertical state with the limiting plate, contact on backup pad and the second activity inslot wall, play the supporting role to the limiting plate under the backup pad effect, promote the cooperation effect of stopper and spacing groove.
A first movable cavity is formed in the first connecting plate 220, a first push plate 2201 penetrates through the first movable cavity, a sliding groove is formed in the inner wall of the first movable cavity, a sliding block matched with the sliding groove is arranged on the side wall of the first push plate 2201, a return spring is arranged on the sliding block, a through cavity communicated with the first movable cavity is formed in the top of the limiting groove, a push block 2202 is arranged in the through cavity, and a third connecting plate 230 is rotatably connected to the first connecting plate 220; first connecting plate is connected in first connecting groove back, the third connecting plate is worn to locate in the second connecting groove, rotate the third connecting plate around the tie point, make the third connecting plate rotate to the second connecting groove in, the stopper contacts with the ejector pad, make the stopper promote the ejector pad up motion, the ejector pad promotes first push pedal and stretches out from first activity intracavity, make first push pedal and third connecting plate contact, play limiting displacement to the third connecting plate, make the unable rotation of third connecting plate, make first push pedal and fixed plate mutually support and fix the third connecting plate, promote the bandwagon effect of first connecting plate and first connecting groove.
A fourth connecting plate 25 is arranged on the mounting plate 21, a second movable cavity is arranged in the fourth connecting plate 25, a fifth connecting plate 27 matched with the first filter plate 24 is arranged in the second movable cavity, a plurality of third movable grooves corresponding to the filter holes on the first filter plate 24 are arranged on the fifth connecting plate 27, vertical rods 271 are arranged in the third movable grooves, a second limiting plate 272 is arranged at one end of each vertical rod 271, and a connecting spring 273 is arranged on each second limiting plate 272; after the filter is used for a period of time, the fifth connecting plate is pushed downwards to move to one side of the first filter plate, water flow enters from one end of the shell, the water flow impacts on the team connecting plate, the second limiting plate is pushed to move towards the outer side of the third movable groove under the action of the water flow, and the vertical rod is inserted into the filter hole of the first filter plate, so that the filter hole in the first filter plate can be cleaned, and the filter hole in the first filter plate can be prevented from being blocked; after the first filter plate is cleaned, water flow is temporarily closed, the vertical rod is pushed to move towards the third movable groove under the action of the connecting spring, the vertical rod enters the third movable groove, the fifth connecting plate is lifted upwards, the fifth connecting plate enters the second movable cavity, and the filter works normally.
A second push plate 26 is arranged on the fifth connecting plate, a through groove matched with the second push plate is formed in the top of the second movable cavity, a fourth limiting plate is arranged at the top of the second push plate, a second supporting spring 261 is arranged at the bottom of the fourth limiting plate, a second protective film 262 is sleeved on the outer side of the second supporting spring, and the fifth connecting plate can be conveniently controlled in a mode of pushing the second push plate, so that the fifth connecting plate enters the shell to clean the first filter plate; the fifth connecting plate can be pushed to automatically move upwards under the action of the second supporting spring, and the automatic resetting of the fifth connecting plate is completed.
The fifth connecting plate is provided with a second through hole matched with the third movable groove, water flow can enter the third movable groove through the second through hole to push the vertical rod to move, the cross section of the vertical rod is smaller than the diameter of the filtering hole of the first filtering plate, the fifth connecting plate is further provided with a plurality of third through holes, and the diameter of the third through hole is larger than the diameter of the filtering hole of the first filtering plate so as to allow water flow to flow from the fifth connecting plate.
A second groove is formed in the bottom of the mounting plate 21, a scraper 210 is arranged in the second groove, the scraper 210 is arranged between the first filter plate 24 and the second filter plate 23, a first through hole is formed in the top of the second groove, a push rod 2101 matched with the first through hole is arranged at the top of the scraper 210, a third limiting plate is arranged at the top of the push rod 2101, a first supporting spring 2102 is arranged at the bottom of the third limiting plate, and a first protective sleeve 29 is sleeved on the outer side of the first supporting spring 2102; after the montant cleared up the filtration pore on to first filter, promote the push rod downstream, make the push rod promote the scraper blade downstream, the scraper blade contacts with first filter and second filter plate surface during downstream, will adhere to the impurity on first filter and second filter and strike off, so that collect the impurity on first filter and the second filter and connect the inslot, make first filter and second filter can accomplish the clearance in the casing, reduce the clearance degree of difficulty to first filter and second filter, guarantee the filter effect of filter.
The first protective sleeve and the second protective sleeve are made of rubber, so that the supporting spring can deform freely; first filter and second filter department filter hole position are different, and other structures are the same, and the second filter is the same with the connected mode of mounting panel and the connected mode of first filter and mounting panel.
Claims (2)
1. The utility model provides a take control method of water-cooling integral type cold water machine of frequency conversion water conservancy module, take water-cooling integral type cold water machine of frequency conversion water conservancy module include water-cooling water chilling unit, with water-cooling water chilling unit matched with cooling tower (50), frequency conversion water conservancy module, controller and converter, water-cooling water chilling unit includes compressor (10), condenser (20), evaporimeter (40) and throttling arrangement (30), its characterized in that: the variable-frequency hydraulic module comprises a water replenishing valve (601), a water filter, a variable-frequency chilled water pump (603) and an expansion tank (602), a chilled inlet water temperature sensor (401) is arranged at a water inlet of the evaporator (40), and a chilled outlet water temperature sensor (402) is arranged at a water outlet of the evaporator (40); the unit controller controls the frequency of the frequency converter and the freezing water pump (603) by detecting the temperature difference between the freezing inlet water temperature and the freezing outlet water temperature, when the temperature difference exceeds a set value, the frequency of the frequency converter and the freezing water pump (603) is increased, and when the temperature difference is lower than the set value, the frequency of the frequency converter and the freezing water pump (603) is reduced;
the water filter comprises a shell (1) and a mounting block (2) arranged on the shell (1), a first filter plate (24) and a second filter plate (23) are arranged in the shell (1), filter holes in the first filter plate (24) and the second filter plate (23) are arranged in a staggered mode, a material receiving groove is formed in the bottom of the mounting block (2), and a first through groove and a second through groove which are communicated with the material receiving groove are formed in the inner wall of the shell (1);
the top of the mounting block (2) is provided with a first through cavity, the top of the mounting block (2) is provided with a mounting plate (21), the mounting plate (21) is fixedly connected to the mounting block (2), and the first filter plate (24) and the second filter plate (23) are detachably connected to the mounting plate (21);
a first connecting groove is formed in the bottom of the mounting plate (21), a first connecting plate (220) matched with the first connecting groove is arranged on the first filter plate (24), a limiting component is arranged on the inner wall of the first connecting groove, and a limiting groove matched with the limiting component is formed in the side wall of the first connecting plate (220);
a first movable groove is formed in the inner wall of the first connecting groove, the limiting assembly comprises a limiting spring (2402) arranged in the first movable groove, a first limiting plate (240) arranged at one end of the limiting spring (2402) and a limiting block (2401) arranged on the first limiting plate (240), an arc surface is arranged at the bottom of the limiting block (2401), a second movable groove is formed in the top of the first movable groove, and the first limiting plate (240) penetrates through the second movable groove;
a second connecting groove matched with the first connecting groove is formed in the mounting plate (21), a fixing plate (28) is arranged in the second connecting groove, a first groove is formed in the inner wall of the second connecting groove, and a connecting block (282) matched with the first groove is arranged on the side wall of the fixing plate (28); a second connecting plate (250) is rotatably connected to the first limiting plate (240), and a supporting plate (2501) is arranged on the second connecting plate (250);
a first movable cavity is formed in the first connecting plate (220), a first push plate (2201) penetrates through the first movable cavity, a sliding groove is formed in the inner wall of the first movable cavity, a sliding block matched with the sliding groove is arranged on the side wall of the first push plate (2201), a reset spring is arranged on the sliding block, a through cavity communicated with the first movable cavity is formed in the top of the limiting groove, a push block (2202) is arranged in the through cavity, and a third connecting plate (230) is rotatably connected to the first connecting plate (220);
a fourth connecting plate (25) is arranged on the mounting plate (21), a second movable cavity is arranged in the fourth connecting plate (25), a fifth connecting plate (27) matched with the first filter plate (24) is arranged in the second movable cavity, a plurality of third movable grooves corresponding to the filter holes in the first filter plate (24) are formed in the fifth connecting plate (27), vertical rods (271) are arranged in the third movable grooves, a second limiting plate (272) is arranged at one end of each vertical rod (271), and connecting springs (273) are arranged on the second limiting plates (272);
mounting panel (21) bottom is equipped with the second recess, be equipped with scraper blade (210) in the second recess, scraper blade (210) are located first filter (24) with between second filter (23), second recess top is equipped with first through-hole, scraper blade (210) top be equipped with first through-hole matched with push rod (2101), push rod (2101) top is equipped with the third limiting plate, third limiting plate bottom is equipped with first supporting spring (2102), first supporting spring (2102) outside cover is equipped with first protective sheath (29).
2. The control method of the water-cooling integrated water chiller with the variable-frequency hydraulic module as claimed in claim 1, is characterized in that: a cooling water pump (501) is arranged at a water inlet of the condenser (20), and the condenser (20) is connected with the cooling tower (50); when the compressor (10) is in partial load operation or the outlet water temperature of the cooling water is lower than a set value, the unit controller automatically unloads the operation number of the fans of the cooling tower (50); when the compressor (10) is stopped, the cooling water pump (501) and the fan of the cooling tower (50) automatically stop running after delaying for a certain time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911019488.1A CN110671769B (en) | 2019-10-24 | 2019-10-24 | Control method of water-cooling integrated water chiller with variable-frequency hydraulic module |
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| CN201911019488.1A CN110671769B (en) | 2019-10-24 | 2019-10-24 | Control method of water-cooling integrated water chiller with variable-frequency hydraulic module |
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| CN111473496B (en) * | 2020-04-29 | 2021-08-13 | 广东美的暖通设备有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN112797668A (en) * | 2020-12-31 | 2021-05-14 | 青岛海尔空调电子有限公司 | Water-cooled heat pump unit and control method thereof |
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| CN102650476B (en) * | 2012-04-24 | 2014-08-13 | 彭渊博 | Energy-saving water chilling unit and water chilling control method for same |
| CN104566815B (en) * | 2014-12-26 | 2018-11-27 | 珠海格力电器股份有限公司 | Central air conditioning water system tele-control system and control method, central air-conditioning |
| CN205897404U (en) * | 2016-07-26 | 2017-01-18 | 安徽朗格暖通设备有限公司 | Frequency conversion friendly air conditioner hydraulic module |
| CN107255329A (en) * | 2017-07-12 | 2017-10-17 | 东南大学 | A kind of transition season low power consuming cold supply system based on energy tower |
| CN207445767U (en) * | 2017-11-15 | 2018-06-05 | 广东新恒清环保科技有限公司 | Filter and sewage disposal device |
| CN207702671U (en) * | 2017-12-22 | 2018-08-07 | 江苏金碧田系统集成有限公司 | A kind of water pump of central air conditioner energy conserving system |
| CN108926892A (en) * | 2018-06-28 | 2018-12-04 | 袁慧初 | A kind of sewage filter device |
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