CN115751834A - Water chilling unit for preparing ice water and control method thereof - Google Patents
Water chilling unit for preparing ice water and control method thereof Download PDFInfo
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- CN115751834A CN115751834A CN202211480229.0A CN202211480229A CN115751834A CN 115751834 A CN115751834 A CN 115751834A CN 202211480229 A CN202211480229 A CN 202211480229A CN 115751834 A CN115751834 A CN 115751834A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 313
- 239000005457 ice water Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 28
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 15
- 239000000758 substrate Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a water chilling unit for ice water preparation and a control method thereof, belonging to the technical field of refrigeration, wherein the water chilling unit for ice water preparation comprises: the ice water main machine unit comprises an ice water main machine; the ice water circulating buffer unit comprises a water tank, wherein the water tank is provided with an accommodating cavity, a controllable movable partition plate is arranged in the accommodating cavity, the accommodating cavity is divided into a water supply cavity and a water return cavity by the partition plate, the water supply cavity and the water return cavity are respectively and controllably communicated with an inlet of an ice water host machine through a first water pump pipeline with a first water pump, and the water supply cavity and the water return cavity are respectively and controllably communicated with an outlet of the ice water host machine through a first water return pipeline; and the ice water tail end equipment is communicated with the water supply cavity through a second water pump pipeline with a second water pump and is controllably communicated with the water return cavity through a second water return pipeline. The volumes of the water supply cavity and the water return cavity can be adaptively adjusted according to the load working conditions of the water chilling unit, so that the water chilling unit can efficiently and stably prepare ice water under all working conditions.
Description
Technical Field
The invention belongs to the technical field of refrigeration, and particularly relates to a water chilling unit for preparing ice water and a control method thereof.
Background
In the industries of dairy products and the like, ice water with the temperature below 2 ℃ is generally required to meet the requirements of specific processes, and the requirements on the process ice water are generally high, namely the requirement on precise temperature and the requirement on continuous and stable water supply are also required. The process ice water prepared by the water chilling unit system is a main water supply mode, but if the temperature fluctuation or unstable water supply of the ice water prepared by the water chilling unit occurs due to large load change at the tail end or other reasons in the production process, the production quality is influenced, even the production is stopped, and production accidents occur.
At present, a water chilling unit system for preparing process ice water solves the problem by arranging a larger water tank on a water supply side and a water return side respectively. When the prepared process ice water is unqualified, the prepared process ice water is directly discharged to a water tank on the water return side, and when the prepared ice water is qualified, the prepared ice water is discharged to a water tank on the water supply side and is pumped to the tail end of water. The return water temperature at the tail end is higher, the return water is firstly sent back to the water tank at the return water side, and then the return water is pumped back to the host machine, so that a cycle is completed. This kind of mode not only needs to use two great bulky water tanks to cushion, and refrigeration efficiency is lower.
Disclosure of Invention
Therefore, the invention provides a water chilling unit for ice water preparation and a control method thereof, and the water chilling unit for ice water preparation and the control method thereof can solve the technical problems that in the prior art, independent water tanks are respectively arranged corresponding to a water supply side and a water return side for buffering, the total volume is large, the space requirement is large, the volumes of the water tank on the water supply side and the water tank on the water return side which are independently designed cannot be changed according to the unit load, and the refrigerating efficiency is low due to large water amount.
In order to solve the above problems, the present invention provides a water chilling unit for ice water preparation, comprising:
the ice water main machine unit comprises an ice water main machine;
the ice water circulating buffer unit comprises a water tank, wherein the water tank is provided with an accommodating cavity, a controllable movable partition plate is arranged in the accommodating cavity, the accommodating cavity is divided into a water supply cavity and a water return cavity by the partition plate, the water supply cavity and the water return cavity are respectively and controllably communicated with an inlet of the ice water main machine through a first water pump pipeline with a first water pump, and the water supply cavity and the water return cavity are respectively and controllably communicated with an outlet of the ice water main machine through a first water return pipeline;
and the ice water end equipment is communicated with the water supply cavity through a second water pump pipeline with a second water pump and is controllably communicated with the water return cavity through a second water return pipeline.
In some embodiments of the present invention, the substrate is,
the baffle is connected with flexible control mechanism, flexible control mechanism includes flexible hinge or telescopic link.
In some embodiments of the present invention, the substrate is,
the first water outlet of the water supply cavity is communicated with the first water pumping pipeline through a fourth electromagnetic valve, the second water outlet of the water supply cavity is communicated with the inlet of the second water pump, the first water return port of the water supply cavity is communicated with the first water return pipeline through a first electromagnetic valve, the third water outlet of the water return cavity is communicated with the first water pumping pipeline through a fifth electromagnetic valve, the second water return port of the water return cavity is communicated with the second water return pipeline through a third electromagnetic valve and is communicated with the first water return pipeline through a second electromagnetic valve, wherein the inlet of the second electromagnetic valve is communicated with the inlet of the first electromagnetic valve, and the outlet of the second electromagnetic valve is communicated with the inlet of the third electromagnetic valve.
The invention also provides a control method of the ice water preparation water chilling unit, which is used for controlling the ice water preparation water chilling unit and comprises the following steps:
when the unit runs, the second electromagnetic valve, the third electromagnetic valve and the first electromagnetic valve are closed, and the ice water return temperature Tbh of the second water return pipeline is obtained;
and controlling the unit to operate in a low-load control mode or a high-load control mode according to the size relation between the ice water return temperature Tbh and a preset return water temperature Ts.
In some embodiments of the present invention, the substrate is,
when Tbh is larger than or equal to Ts, the unit operates a high-load control mode, and under the high-load control mode, the ice water main engine is controlled to operate in a high-efficiency interval, the opening degree of the third electromagnetic valve is increased, and the frequency of the second water pump is increased;
and acquiring a real-time water level H2 in the water return cavity and a real-time water level H1 in the water supply cavity, and controlling the partition plate to move towards one side close to the water supply cavity when H2-H1 is greater than H3, wherein H3 is a preset liquid level difference value.
In some embodiments of the present invention, the substrate is,
and after the partition plate moves to the maximum distance towards one side close to the water supply cavity, controlling the ice water main machine to be frequency-increased to the maximum load for operation.
In some embodiments of the present invention, the substrate is,
and detecting the size relation between H2 and H5 in the process that the ice water main machine runs at the maximum load, wherein H5 is the lowest water level of the water tank.
In some embodiments of the present invention, the substrate is,
when Tbh is less than Ts, the unit operates a low-load control mode, and under the low-load control mode, the ice water host is controlled to operate in a high-efficiency interval, and the opening degree of the third electromagnetic valve is reduced and the frequency of the second water pump is reduced;
and acquiring a real-time water level H1 in the water supply cavity and a real-time water level H2 in the water return cavity, and controlling the partition plate to move towards one side close to the water return cavity when H1-H2 is more than H3, wherein H3 is a preset liquid level difference value.
In some embodiments of the present invention, the substrate is,
and after the partition plate moves to the maximum distance towards one side close to the water return cavity, controlling the ice water host machine to stop.
In some embodiments of the present invention, the substrate is,
and during the shutdown of the ice water host, detecting the size relation between H2 and H5, wherein H5 is the lowest water level of the water tank.
In some embodiments of the present invention, the substrate is,
when a unit is started, acquiring the shutdown time t of the unit;
when T is larger than T, controlling the unit to operate a quick start control mode, and controlling the fourth electromagnetic valve to be opened and the fifth electromagnetic valve to be closed in the quick start control mode;
when the real-time water temperature Th of the first water return pipeline is lower than a preset qualified temperature Ty, controlling to close the second electromagnetic valve, and opening the first electromagnetic valve and the third electromagnetic valve;
when the real-time water temperature Th of the first water return pipeline is not lower than a preset qualified temperature Ty, controlling to open the second electromagnetic valve and the third electromagnetic valve and close the first electromagnetic valve, wherein T is a preset duration; or,
when T is less than or equal to T, controlling the unit to operate in a normal starting control mode, and controlling the fourth electromagnetic valve to be closed and the fifth electromagnetic valve to be opened in the normal starting control mode;
when the real-time water temperature Th of the first water return pipeline is lower than a preset qualified temperature Ty, controlling to close the second electromagnetic valve, and opening the first electromagnetic valve and the third electromagnetic valve;
and when the real-time water temperature Th of the first water return pipeline is not lower than a preset qualified temperature Ty, controlling to open the second electromagnetic valve and the third electromagnetic valve and close the first electromagnetic valve, wherein T is a preset duration.
According to the water chilling unit for preparing ice water and the control method thereof, the movable partition plate is arranged in the water tank, so that the volumes of the water supply cavity and the water return cavity formed in the water tank can be adjusted according to the load of the water chilling unit under the working conditions, and the water chilling unit can efficiently and stably prepare ice water under all the working conditions; in addition, the water supply cavity is controllably communicated with the ice water main machine through the first pump water pipeline, so that water in the water supply cavity is controlled to directly enter the ice water main machine for heat exchange cooling after the unit is stopped for a long time, cooling water with qualified temperature can be formed more quickly, water cooling in the large-volume water return cavity is not needed any more, and the time from starting to stably providing qualified ice water is greatly shortened.
Drawings
FIG. 1 is a schematic diagram of a water chilling unit for ice water preparation according to an embodiment of the present invention;
FIG. 2 is another schematic structural view of the water tank of FIG. 1;
fig. 3 is a schematic flow chart of a control method of a water chilling unit for ice water preparation according to an embodiment of the present invention.
The reference numbers are given as:
1. a cooling tower; 2. a third water pump; 3. an ice water main machine; 4. a first water pump; 5. ice water end equipment; 6. a second water pump; 7. a water tank; 8. a partition plate; 9. a telescopic hinge; 10. a water supply cavity; 11. a water return cavity; 21. a telescopic rod; 101. a first solenoid valve; 102. a second solenoid valve; 103. a third solenoid valve; 104. a fourth solenoid valve; 105. a fifth solenoid valve; 201. a first water temperature sensor; 202. a second water temperature sensor; 203. a first water level sensor; 204. and a second water level sensor.
Detailed Description
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, there is provided a water chiller for ice water preparation, including: the ice water main machine unit comprises an ice water main machine 3; the ice water circulating buffer unit comprises a water tank 7, wherein the water tank 7 is provided with an accommodating cavity, a controllable movable partition plate 8 is arranged in the accommodating cavity, the accommodating cavity is divided into a water supply cavity 10 and a water return cavity 11 by the partition plate 8, the water supply cavity 10 and the water return cavity 11 are respectively and controllably communicated with an inlet of the ice water host machine 3 through a first water pump pipeline with a first water pump 4, and the water supply cavity 10 and the water return cavity 11 are respectively and controllably communicated with an outlet of the ice water host machine 3 through a first water return pipeline; and the ice water end equipment 5 is communicated with the water supply cavity 10 through a second water pump pipeline with a second water pump 6 and is controllably communicated with the water return cavity 11 through a second water return pipeline.
In the technical scheme, a movable partition plate 8 is arranged in a water tank 7, so that the volumes of a water supply cavity 10 and a water return cavity 11 formed in the water tank 7 can be adjusted according to the load working condition adaptability of a water chilling unit, and the water chilling unit can efficiently and stably prepare ice water under various working conditions; in addition, the water supply cavity 10 is controllably communicated with the ice water main machine 3 through the first pump water pipeline, so that after the unit is stopped for a long time, water in the water supply cavity 10 is controlled to directly enter the ice water main machine 3 for heat exchange cooling, cooling water with qualified temperature can be formed more quickly, water cooling in the large-volume water return cavity 11 is not needed for cooling, and therefore the time from starting to stably providing qualified ice water is greatly shortened.
In some embodiments, the partition 8 is connected to a telescoping control mechanism, which includes a telescoping hinge 9 (as shown in fig. 1) or a telescoping rod 21 (as shown in fig. 2). It will be understood that the partition 8 and the wall of the receiving chamber should be sealed as necessary, for example, a strip-shaped sealing bag is provided between the bottom wall of the partition 8 and the two vertical walls and the wall of the receiving chamber, and the sealing bag is made of a material which has good elasticity and is easy to deform, such as foamed polyurethane, filled in a sealed envelope.
Referring to fig. 1, in a specific embodiment, a first water outlet of the water supply chamber 10 is communicated with a first pump water pipeline through a fourth solenoid valve 104, a second water outlet of the water supply chamber 10 is communicated with an inlet of the second pump 6, a first water return port of the water supply chamber 10 is communicated with a first water return pipeline through a first solenoid valve 101, a third water outlet of the water return chamber 11 is communicated with the first pump water pipeline through a fifth solenoid valve 105, a second water return port of the water return chamber 11 is communicated with a second water return pipeline through a third solenoid valve 103 and is communicated with the first water return pipeline through a second solenoid valve 102, wherein an inlet of the second solenoid valve 102 is communicated with an inlet of the first solenoid valve 101, and an outlet of the second solenoid valve 102 is communicated with an inlet of the third solenoid valve 103.
The ice water main unit 3 specifically includes a compressor, an evaporator, a condenser, a throttling element, and other components, wherein the evaporator exchanges heat with water flowing out of the first water pumping pipeline in the ice water circulating and buffering unit to achieve a purpose of cooling water in the ice water circulating and buffering unit, and the condenser is cooled by a cooling cycle formed by the third water pump 2 and the cooling tower 1.
According to an embodiment of the present invention, there is also provided a control method for an ice water preparation chiller, for controlling the ice water preparation chiller, including the steps of:
when the unit operates, the second electromagnetic valve 102, the third electromagnetic valve 103 are closed, and the first electromagnetic valve 101 is opened, the ice water return temperature Tbh of the second water return pipeline is obtained through the second water temperature sensor 202;
and controlling the unit to operate in a low-load control mode or a high-load control mode according to the size relation between the ice water return temperature Tbh and the preset return temperature Ts.
Specifically, when Tbh is greater than or equal to Ts, it is indicated that the heat exchange requirement at the ice water terminal equipment 5 is greater than the cooling capacity of the cooling water entering the ice water terminal equipment, at this time, the unit is controlled to operate in the high-load control mode, and in the high-load control mode, the ice water main machine 3 is controlled to operate in a high-efficiency interval (the operating power of the ice water main machine 3 corresponding to the interval is generally 60% -80% of the rated maximum operating power of the unit), and the opening degree of the third electromagnetic valve 103 is increased, and the second water pump 6 is increased in frequency, so that the inflow and outflow of the cooling water at the ice water terminal equipment 5 are increased, and the purpose of cooling the ice water terminal equipment 5 can be achieved more rapidly; in the process, the water quantity flowing out of the water supply cavity 10 is relatively more, the water quantity flowing into the water return cavity 11 is relatively less, the real-time water level H2 in the water return cavity 11 and the real-time water level H1 in the water supply cavity 10 are obtained at the moment, and when H2-H1 is larger than H3, the control partition plate 8 moves towards one side close to the water supply cavity 10, wherein H3 is a preset liquid level difference value, so that the volumes of the water supply cavity 10 and the water return cavity 11 are matched with the water supply and return water quantity in the control process, and the stable and efficient operation of the unit is ensured.
Further, after the partition plate 8 moves to the side close to the water supply cavity 10 to the maximum distance, the partition plate 8 stops moving, and at this time, the ice water main unit 3 may be controlled to operate at the maximum load (i.e., the rated maximum operating power) in an up-conversion manner, so as to ensure the cooling efficiency. And in the process that the ice water main machine 3 runs at the maximum load, detecting the size relation between H2 and H5, wherein H5 is the lowest water level of the water tank, and preventing the liquid level in the water return cavity 11 from being too low and losing the buffer effect.
When Tbh is less than Ts, it indicates that the heat exchange requirement at the ice water terminal equipment 5 is less than the cooling capacity of the cooling water entering the ice water terminal equipment, at this time, the control unit operates a low-load control mode, and in the low-load control mode, the ice water host 3 is controlled to operate in a high-efficiency interval, and the opening of the third electromagnetic valve 103 is reduced, and the second water pump 6 is frequency-reduced, so that the inflow and outflow of the cooling water at the ice water terminal equipment 5 are reduced, and the maintenance of the reduced temperature of the ice water terminal equipment 5 can also be realized; in the process, the water quantity in the outflow water supply cavity 10 is relatively small, the real-time water level H1 in the water supply cavity 10 (acquired by detecting through the first water level sensor 203 arranged in the water supply cavity 10) and the real-time water level H2 in the water return cavity 11 (acquired by detecting through the second water level sensor 204 arranged in the water return cavity 11) are acquired at the moment, the control partition plate 8 moves towards one side close to the water return cavity 11 when H1-H2 is greater than H3, the H3 is a preset liquid level difference value, the volumes of the water supply cavity 10 and the water return cavity 11 are matched with the water supply return quantity in the control process, and the stable and efficient operation of the unit is ensured.
Further, after the partition plate 8 moves to the maximum distance toward the side close to the water return cavity 11, the partition plate 8 stops moving, and at this time, the ice water main unit 3 can be controlled to stop, that is, at this time, because the cooling load is small, the ice water main unit 3 does not need to continuously operate to provide cooling capacity. And during the shutdown of the ice water main machine 3, detecting the size relation between H2 and H5, wherein H5 is the lowest water level of the water tank, and preventing the liquid level in the water supply cavity 10 from being too low and losing the buffer effect.
In a preferred embodiment, when a unit is started, the shutdown time t of the unit is obtained;
when T is greater than T, the process of the downtime of the ice water main machine 3 is described, due to the influence of heat of the external environment, the water temperatures of cooling water in each pipeline in the unit and cooling water in the water tank 7 are probably far higher than a preset qualified temperature Ty, and the cooling water needs to be quickly cooled to the preset qualified temperature, so that the unit is controlled to operate in a quick start control mode, and under the quick start control mode, the fourth electromagnetic valve 104 is controlled to be opened, and the fifth electromagnetic valve 105 is controlled to be closed; when the real-time water temperature Th (detected and obtained by the first water temperature sensor 201) of the first water return pipeline is lower than the preset qualified temperature Ty, controlling to close the second electromagnetic valve 102, open the first electromagnetic valve 101 and open or keep the third electromagnetic valve 103 in a conducting state, and at this time, the cooling water with qualified water temperature is buffered and stored in the water supply cavity 10 for the pumping of the second water pump 6 to be supplied to the application of the ice water end equipment 5; when the real-time water temperature Th of the first water return pipeline is not lower than the preset qualified temperature Ty, the second electromagnetic valve 102 and the third electromagnetic valve 103 are controlled to be opened, the first electromagnetic valve 101 is closed, and cooling water with unqualified temperature is buffered and stored into the water return cavity 11, so that adverse effects on the cooling water in the water supply cavity 10 are prevented, wherein T is preset time length; or,
when T is less than or equal to T, the unit can be controlled to operate in a normal starting control mode, under the normal starting control mode, the fourth electromagnetic valve 104 is controlled to be closed, the fifth electromagnetic valve 105 is controlled to be opened, and cooling water in the water return cavity 11 is pumped by the first water pump 4 to enter the ice water main machine 3 for cooling; when the real-time water temperature Th of the first water return pipeline is lower than the preset qualified temperature Ty, the second electromagnetic valve 102 is controlled to be closed, the first electromagnetic valve 101 is opened, cooling water with qualified temperature is stored in the water supply cavity 10, and meanwhile, the third electromagnetic valve 103 is opened or kept in a conducting state; when the real-time water temperature Th of the first water return pipeline is not lower than the preset qualified temperature Ty, the second electromagnetic valve 102 and the third electromagnetic valve 103 are controlled to be opened (fully opened at this moment), the first electromagnetic valve 101 is closed, the cooling water with unqualified temperature is buffered and stored in the water return cavity 11, the adverse effect on the cooling water in the water supply cavity 10 is prevented, and the preset time length is T.
For the dairy production regime, the aforementioned pre-set qualifying temperature Ty is typically 2 ℃.
Those skilled in the art will readily appreciate that the advantageous features of the above described modes can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (11)
1. A water chilling unit for preparing ice water is characterized by comprising:
the ice water main machine unit comprises an ice water main machine (3);
the ice water circulating buffer unit comprises a water tank (7), wherein the water tank (7) is provided with an accommodating cavity, a controllable movable partition plate (8) is arranged in the accommodating cavity, the accommodating cavity is divided into a water supply cavity (10) and a water return cavity (11) by the partition plate (8), the water supply cavity (10) and the water return cavity (11) are respectively in controllable communication with an inlet of the ice water host (3) through a first pump water pipeline with a first water pump (4), and the water supply cavity (10) and the water return cavity (11) are respectively in controllable communication with an outlet of the ice water host (3) through a first water return pipeline;
and the ice water tail end equipment (5) is communicated with the water supply cavity (10) through a second water pump pipeline with a second water pump (6) and is controllably communicated with the water return cavity (11) through a second water return pipeline.
2. The ice water preparation chiller according to claim 1,
the partition plate (8) is connected with a telescopic control mechanism, and the telescopic control mechanism comprises a telescopic hinge (9) or a telescopic rod (21).
3. The ice water preparation chiller according to claim 1,
a first water outlet of the water supply cavity (10) is communicated with the first water pumping pipeline through a fourth electromagnetic valve (104), a second water outlet of the water supply cavity (10) is communicated with an inlet of the second water pump (6), a first water return port of the water supply cavity (10) is communicated with the first water return pipeline through a first electromagnetic valve (101), a third water outlet of the water return cavity (11) is communicated with the first water pumping pipeline through a fifth electromagnetic valve (105), a second water return port of the water return cavity (11) is communicated with the second water return pipeline through a third electromagnetic valve (103) and is communicated with the first water return pipeline through a second electromagnetic valve (102), wherein an inlet of the second electromagnetic valve (102) is communicated with an inlet of the first electromagnetic valve (101), and an outlet of the second electromagnetic valve (102) is communicated with an inlet of the third electromagnetic valve (103).
4. A control method for an ice water preparation chiller, which is used for controlling the ice water preparation chiller of claim 3, comprises the following steps:
when the unit runs, the second electromagnetic valve (102), the third electromagnetic valve (103) are closed, and the first electromagnetic valve (101) is opened, obtaining the ice water return temperature Tbh of the second water return pipeline;
and controlling the unit to operate in a low-load control mode or a high-load control mode according to the size relation between the ice water return temperature Tbh and a preset return temperature Ts.
5. The control method according to claim 4,
when Tbh is larger than or equal to Ts, the unit operates in a high-load control mode, and under the high-load control mode, the ice water main machine (3) is controlled to operate in a high-efficiency interval, the opening degree of the third electromagnetic valve (103) is increased, and the frequency of the second water pump (6) is increased;
and acquiring the real-time water level H2 in the water return cavity (11) and the real-time water level H1 in the water supply cavity (10), and controlling the partition plate (8) to move towards one side close to the water supply cavity (10) when H2-H1 is greater than H3, wherein H3 is a preset liquid level difference value.
6. The control method according to claim 5,
and after the partition plate (8) moves to the maximum distance towards one side close to the water supply cavity (10), controlling the ice water main machine (3) to operate at the maximum load in an up-conversion mode and controlling the first water pump (4) to operate at the up-conversion mode.
7. The control method according to claim 6,
and in the process that the ice water main machine (3) runs at the maximum load, detecting the size relation between H2 and H5, wherein H5 is the lowest water level of the water tank.
8. The control method according to claim 4,
when Tbh is less than Ts, the unit operates a low-load control mode, and under the low-load control mode, the ice water host (3) is controlled to operate in a high-efficiency interval, the opening degree of the third electromagnetic valve (103) is reduced, and the frequency of the second water pump (6) is reduced;
obtain real-time water level H1 in the water supply chamber (10) and real-time water level H2 in the return water chamber (11) to when H1-H2 > H3, control baffle (8) orientation is close to return water chamber (11) one side is removed, wherein H3 is for predetermineeing the liquid level difference.
9. The control method according to claim 8,
and after the partition plate (8) moves to the maximum distance towards one side close to the water return cavity (11), the ice water main machine (3) and the first water pump (4) are controlled to stop.
10. The control method according to claim 9,
and during the shutdown of the ice water main machine (3), detecting the size relation between H2 and H5, wherein H5 is the lowest water level of the water tank.
11. The control method according to claim 4,
when a unit is started, acquiring the shutdown time t of the unit;
when T is larger than T, controlling the unit to operate in a quick start control mode, and controlling the fourth electromagnetic valve (104) to be opened and the fifth electromagnetic valve (105) to be closed in the quick start control mode;
when the real-time water temperature Th of the first water return pipeline is lower than a preset qualified temperature Ty, the second electromagnetic valve (102) is controlled to be closed, and the first electromagnetic valve (101) and the third electromagnetic valve (103) are opened;
when the real-time water temperature Th of the first water return pipeline is not lower than a preset qualified temperature Ty, controlling to open the second electromagnetic valve (102) and the third electromagnetic valve (103), and closing the first electromagnetic valve (101), wherein T is a preset time length; or,
when T is less than or equal to T, controlling the unit to operate in a normal starting control mode, and controlling the fourth electromagnetic valve (104) to be closed and the fifth electromagnetic valve (105) to be opened in the normal starting control mode;
when the real-time water temperature Th of the first water return pipeline is lower than a preset qualified temperature Ty, controlling to close the second electromagnetic valve (102), and opening the first electromagnetic valve (101) and the third electromagnetic valve (103);
and when the real-time water temperature Th of the first water return pipeline is not lower than a preset qualified temperature Ty, controlling to open the second electromagnetic valve (102) and the third electromagnetic valve (103) and close the first electromagnetic valve (101), wherein T is a preset duration.
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| CN202211480229.0A CN115751834A (en) | 2022-11-24 | 2022-11-24 | Water chilling unit for preparing ice water and control method thereof |
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| CN213020495U (en) * | 2020-06-23 | 2021-04-20 | 河南中烟工业有限责任公司 | Improved structure of cooling circulation water tank |
| CN214065281U (en) * | 2020-12-26 | 2021-08-27 | 广东竣凯电器有限公司 | Water storage type water heater capable of adjusting capacity of water tank |
| CN115265064A (en) * | 2022-06-23 | 2022-11-01 | 珠海格力电器股份有限公司 | Refrigeration system, control method and storage medium |
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| CN213020495U (en) * | 2020-06-23 | 2021-04-20 | 河南中烟工业有限责任公司 | Improved structure of cooling circulation water tank |
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