CN115111791B - Water chiller, method and device for detecting dust deposit of condenser and readable storage medium - Google Patents
Water chiller, method and device for detecting dust deposit of condenser and readable storage medium Download PDFInfo
- Publication number
- CN115111791B CN115111791B CN202210725006.XA CN202210725006A CN115111791B CN 115111791 B CN115111791 B CN 115111791B CN 202210725006 A CN202210725006 A CN 202210725006A CN 115111791 B CN115111791 B CN 115111791B
- Authority
- CN
- China
- Prior art keywords
- condenser
- temperature sensor
- water chiller
- temperature
- condensing fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000000428 dust Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000004590 computer program Methods 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008021 deposition Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application discloses a method and a device for detecting accumulated ash of a water chiller and a condenser and a readable storage medium, wherein the water chiller can comprise: the water chiller comprises a water chiller main body, wherein a compressor, a condenser and a condensing fan are arranged in the water chiller main body; the first temperature sensor is used for detecting the ambient temperature inside the water chiller; a second temperature sensor for detecting an outlet temperature of the condenser; and the controller is used for receiving detection signals of the first temperature sensor and the second temperature sensor when the compressor and the condensing fan work at the first working point, and determining whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor. By implementing the method and the device, the technical problem of low heat exchange efficiency of the condenser caused by dust accumulation of the condenser in the prior art can be solved.
Description
Technical Field
The application relates to the technical field of condensers, in particular to a method and a device for detecting dust deposition of a water chiller and a condenser and a readable storage medium.
Background
With the development of the age, the condenser is widely applied to various electrical equipment and industrial equipment such as refrigerators, air conditioners, water coolers and the like, and brings great convenience to daily life and industrial production of users. When the related refrigeration equipment is used, dust in the air can be gradually adsorbed on the condenser due to long-term blowing of the condenser, and when accumulated dust reaches a certain amount, the heat exchange efficiency of the condenser can be affected, so that the heat exchange efficiency of the condenser is low.
Disclosure of Invention
The embodiment of the application provides a water chiller, a method and a device for detecting accumulated ash of a condenser and a readable storage medium, which can solve the technical problems that in the prior art, the heat exchange efficiency of the condenser is low and a user cannot be reminded of cleaning dust at regular time.
In a first aspect, embodiments of the present application provide a water chiller, which may include:
the water chiller comprises a water chiller main body, wherein a compressor, a condenser and a condensing fan are arranged in the water chiller main body;
the first temperature sensor is used for detecting the ambient temperature inside the water chiller;
a second temperature sensor for detecting an outlet temperature of the condenser;
the controller is used for receiving detection signals of the first temperature sensor and the second temperature sensor when the compressor and the condensing fan work at a first working point, and determining whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor; the first working condition point is used for indicating that the compressor and the condensing fan respectively work at the highest rotating speeds which can work normally.
When the embodiment of the application is implemented, under the condition that the compressor and the condensing fan respectively work at the highest rotating speeds, the output of the external heat dissipation of the water chiller system reaches the limit, and at this time, the controller can determine whether dust attached to the condenser needs to be treated or not based on the ambient temperature inside the water chiller indicated by the first temperature sensor and the outlet temperature of the condenser indicated by the second temperature sensor. On one hand, the realization mode can avoid the problem of low heat exchange efficiency of the condenser caused by ash accumulation of the condenser; on the other hand, the normal operation of the water chiller can be ensured, and the downtime is avoided.
In one possible implementation, the controller is specifically configured to:
setting the rotational speed of the condensing fan to a minimum rotational speed in the case that the outlet temperature of the condenser is less than a first threshold value;
setting the rotation speed of the condensing fan to be a target rotation speed when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is less than a second threshold value, wherein the target rotation speed is equal to the highest rotation speed at which the condensing fan can normally work, the minimum rotation speed of the condensing fan and a first tested parameter delta 1 Second empirical parameter delta 2 Related to the following.
In this way, when the outlet temperature of the condenser is smaller than the first threshold value, the chiller system is relatively safe, the refrigerating effect can be fully exerted, no prompt information is required to be output, and at the moment, the rotating speed of the condensing fan can be set to be the minimum rotating speed; when the outlet temperature of the condenser is greater than the first threshold value, the rotation speed of the condensing fan may be set to a target rotation speed.
In one possible implementation manner, the controller is further specifically configured to:
and when the outlet temperature of the condenser is greater than a first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is greater than a second threshold value, setting the rotating speed of the condensing fan to be the maximum rotating speed, and outputting prompt information (such as flashing warning lamps, voice broadcasting and the like) so as to remind workers of treating dust attached to the condenser.
In this way, when the outlet temperature of the condenser is greater than the first threshold, this means that the actual use environment temperature is higher or the cooling effect of the cooling fan is affected due to insufficient heat dissipation and air cooling, at this time, the temperature difference between the environment temperature inside the cooling fan and the outlet temperature of the condenser can be further determined, and if the temperature difference is less than the second threshold, the cooling capacity can be improved by adjusting the variable frequency speed regulation of the cooling fan; if the temperature difference is greater than the second threshold, it may be determined that the refrigerating effect of the chiller system has reached the upper limit of the capacity thereof, and at this time, it is required to ensure that the condensing fan is at the maximum operating speed, and at the same time, a prompt message (for example, a warning light blinks, and a voice broadcast, etc.) may be output to remind a worker to process the dust attached to the condenser.
In one possible implementation, the staff may not clean dust or overhaul in time after alarming, and if the temperature difference between the ambient temperature inside the chiller and the outlet temperature of the condenser is greater than the third threshold, the cold water operation may be stopped for safety, and the user may wait for dust cleaning and overhaul.
It should be noted that, the first threshold may be the highest temperature that the condensing fan can bear when the condensing fan is maintained at the minimum rotation speed, and the third threshold may be the highest temperature that the condensing fan can normally operate when the condensing fan is maintained at the maximum rotation speed.
In a second aspect, an embodiment of the present application provides a method for detecting ash deposition of a condenser, where the method is applied to a water chiller, and the water chiller includes a water chiller main body, a first temperature sensor, a second temperature sensor, and a controller; the method for detecting the accumulated ash of the condenser, in which the compressor is installed inside the main body of the water chiller, comprises the following operations by the controller:
when the compressor and the condensing fan work at a first working point, receiving detection signals of the first temperature sensor and the second temperature sensor, and determining whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor; the first working condition point is used for indicating that the compressor and the condensing fan respectively work at the highest rotating speeds which can work normally.
In one possible implementation manner, the determining whether the dust attached to the condenser needs to be processed according to the outlet temperature of the condenser acquired by the second temperature sensor includes:
setting the rotational speed of the condensing fan to a minimum rotational speed in the case that the outlet temperature of the condenser is less than a first threshold value;
at an outlet temperature of the condenser greater than the first threshold and theSetting the rotation speed of the condensing fan as a target rotation speed under the condition that the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is smaller than a second threshold value, wherein the target rotation speed and the highest rotation speed of the condensing fan which can normally work, the minimum rotation speed of the condensing fan and a first tested parameter delta 1 Second empirical parameter delta 2 Related to the following.
In one possible implementation manner, the determining whether the dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor includes:
and when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is greater than the second threshold value, outputting prompt information to remind a worker to treat dust attached to the condenser.
In one possible implementation, the staff may not clean dust or overhaul in time after alarming, and if the temperature difference between the ambient temperature inside the chiller and the outlet temperature of the condenser is greater than the third threshold, the cold water operation may be stopped for safety, and the user may wait for dust cleaning and overhaul.
In a third aspect, an embodiment of the present application provides a control device, including a processor and a memory, where the processor and the memory are connected to each other, where the memory is configured to store a computer program supporting the control device to perform the method described above, the computer program including program instructions, and the processor is configured to invoke the program instructions to perform the method of the first aspect described above.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of the first aspect described above.
In a fifth aspect, embodiments of the present application also provide a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of the first aspect described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a water chiller according to an embodiment of the present disclosure;
FIG. 2a is a schematic flow chart of a method for detecting ash deposition on a condenser according to an embodiment of the present application;
FIG. 2b is a schematic flow chart of a control method of a chiller system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Unless defined otherwise, technical or scientific terms used in the embodiments of the present specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present invention pertains. The terms "first," "second," and the like, as used in the embodiments of the present disclosure, do not denote any order, quantity, or importance, but rather are used to avoid intermixing of the components.
Throughout this specification, unless the context requires otherwise, the term "comprise" is to be construed in an open, inclusive sense, i.e. as "comprising, but not limited to. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "particular examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In describing some embodiments, expressions of "coupled" and "connected" and their derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, the term "coupled" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact. The embodiments disclosed herein are not necessarily limited to the description.
Summary of the application
With the development of the age, the condenser is widely applied to various electrical equipment and industrial equipment such as refrigerators, air conditioners, water coolers and the like, and brings great convenience to daily life and industrial production of users. When the related refrigeration equipment is used, dust in the air can be gradually adsorbed on the condenser due to long-term blowing of the condenser, and when accumulated dust reaches a certain amount, the heat exchange efficiency of the condenser can be affected, so that the heat exchange efficiency of the condenser is low.
Generally, for an air-cooled chiller system, energy transfer is achieved by refrigeration, and finally heat is dissipated into the air by a condensing fan of a condenser, so that the temperature of the condenser (mainly referred to as condensing temperature) is generally higher than the ambient temperature, and at this time, if enough wind blows, the heat can be ensured to be taken away in time.
Accordingly, the embodiments of the present specification provide a water chiller and a method of detecting dust deposition of a condenser, which can determine whether dust attached to the condenser needs to be treated based on an ambient temperature inside the water chiller indicated by a first temperature sensor and an outlet temperature of the condenser indicated by a second temperature sensor in a case where a compressor and a condensing fan are operated at the highest rotational speeds, respectively. The technical solutions in the embodiments of the present specification will be described below with reference to the drawings in the embodiments of the present specification. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.
Exemplary method
Referring to fig. 1, fig. 1 is a schematic structural diagram of a water chiller in a hardware operating environment according to an embodiment of the present application.
In the following description, suffixes such as "module", "part", "unit" for representing elements are used only for facilitating the description of the present invention, and the present application has no particular meaning. Thus, "module," "component," "unit" may be used in combination.
As shown in fig. 1, a water chiller 100 includes a chiller main body 101, a first temperature sensor 102, a second temperature sensor 103, and a controller 104; wherein, the inside of the main body 101 of the water chiller is installed with a compressor 1011, a condenser 1012 and a condensing fan 1013; the first temperature sensor 102 is arranged inside the water chiller main body 101 and is used for detecting the ambient temperature inside the water chiller; a second temperature sensor 103 is provided at the outlet end of the condenser 103 for detecting the outlet temperature of the condenser.
In this embodiment of the present application, the condensing fan may be a dc speed-regulating fan, and the stepless speed regulating range of the condensing fan is generally 0-sp_max, where the minimum rotation speed may be set to sp_min=500-1000 RPM (revolutions per minute).
Taking the water chiller shown in fig. 1 as an example, the following specifically describes a method for detecting dust accumulation of a condenser provided in the present application, as shown in fig. 2, the method may include, but is not limited to, the following steps:
step S200, respectively obtaining the rotation speeds of a compressor and a condensing fan;
step S201, judging whether the compressor is at the highest rotating speed capable of working normally; if yes, go to step S202; if not, determining that the refrigerating capacity of the water chiller system is rich.
Step S202, judging whether the condensing fan is at the highest rotating speed capable of working normally; if yes, go to step S203; if not, determining that the refrigerating capacity of the water chiller system is surplus.
Step S203, receiving a detection signal of a second temperature sensor, and detecting the outlet temperature of the condenser;
step S204, receiving a detection signal of a first temperature sensor, and detecting the ambient temperature inside the water chiller;
step S205, determining whether dust attached to the condenser needs to be processed or not according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor. The specific implementation thereof can be illustrated in fig. 2b, and is specifically described below:
in one embodiment, the controller may determine whether the outlet temperature of the condenser is greater than a first threshold, if it is determined that the outlet temperature of the condenser is less than the first threshold, this indicates that the chiller system is relatively safe, and may fully perform the refrigeration effect without outputting a prompt message, where at this time, the rotational speed of the condensing fan may be set to a minimum rotational speed; if it is determined that the outlet temperature of the condenser is greater than the first threshold value, which means that the cooling effect of the chiller system is affected, the rotation speed of the condensing fan may be set to the target rotation speed.
In one embodiment, the target rotational speed may be determined according to the following equation (1):
wherein Sp represents the target rotation speed, sp_min represents the minimum rotation speed of the condensing fan, sp_max represents the maximum rotation speed of the condensing fan which can normally work, T represents the ambient temperature collected by the first temperature sensor, tx represents the outlet temperature of the condenser collected by the second temperature sensor, delta 1 Representing the first tested parameter, delta 2 Representing a second empirical parameter. Generally, delta 1 、δ 2 The values of (2) may be as shown in Table 1:
TABLE 1
| δ1 | δ2 | T1 | T2 | T3 |
| 2～5℃ | δ1+(5～15)℃ | 20～30℃ | T+δ 2 | T2+(3～5)℃ |
The values shown in table 1 are only examples, and should not be construed as limiting, and T1 in the table indicates a first threshold value, T2 indicates a second threshold value, and T3 indicates a third threshold value.
As can be guided by equation (1), the rotation speed signal is represented by tx=t+δ 1 At a rotational speed sp_min, tx=t+δ 2 At this time, the rotation speed is sp_max, and the intermediate stage Sp linearly changes with Tx.
Illustratively, the hint information may include, but is not limited to: flashing warning lights, voice broadcast, etc.
In one embodiment, the controller may determine whether the outlet temperature of the condenser is greater than a first threshold, which indicates whether the cooling effect of the chiller system is adequate. When the outlet temperature of the condenser is judged to be larger than the first threshold value, whether the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is larger than the second threshold value or not can be further judged, if the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is judged to be smaller than the second threshold value, the condensing fan can be obtained according to the rotating speed calculation formula, and the purpose of improving the refrigerating capacity is achieved by improving the rotating speed so as to improve the heat dissipation capacity; if the temperature difference is greater than the second threshold, it may be determined that the refrigerating effect of the chiller system reaches the limit, or may not reach the predetermined requirement, at this time, the condensing fan may be operated at the maximum rotation speed, and at the same time, a prompt message (for example, a warning light blinks, a voice broadcast, a buzzer sounds, etc.) may be output, so as to remind a worker to process the dust attached to the condenser. It can be understood that when the dust is cleaned, the heat dissipation of the water chiller system is enhanced, and the water chiller system automatically returns to the previous state, so that the water chiller system automatically and clearly alarms.
It should be noted that, in practical application, the second threshold value T2 may be t+δ 2 ℃。
If it is determined that the temperature difference between the ambient temperature inside the chiller and the outlet temperature of the condenser is greater than the third threshold, a certain potential safety hazard exists due to the excessively high condensing pressure, and it is generally difficult to control the problem of the evaporation end and provide a corresponding refrigeration capacity requirement. At the moment, when the prompt information is output, the machine can be stopped forcefully, and after the worker is required to overhaul, the machine can be restarted to ensure the safety.
In practical applications, the third threshold may be T2+ (3-5) deg.C for T3.
It should be noted that, the first threshold may be the highest temperature that the condensing fan can bear when the condensing fan is maintained at the minimum rotation speed, and the third threshold may be the highest temperature that the condensing fan can normally operate when the condensing fan is maintained at the maximum rotation speed.
In one embodiment, the controller may obtain a pressure difference between an air inlet and an air outlet of the condensing fan, and then determine the dust deposit amount of the condenser based on the pressure difference between the air inlet and the air outlet of the condensing fan and an ambient temperature inside the chiller. For example, the accumulated ash amount of the condenser corresponding to the condenser under different environmental temperatures and different pressure differences between the air inlet and the air outlet of the condensing fan can be obtained through experiments in advance, and a corresponding data relation table is established according to the corresponding relation between the environmental temperatures, the pressure differences between the air inlet and the air outlet of the condensing fan and the accumulated ash amount obtained through the experiments, and the data relation table is stored. After the pressure difference between the air inlet and the air outlet of the condensing fan and the ambient temperature inside the water chiller are obtained, the ash deposition amount of the condenser is obtained by inquiring the data relation table.
In one embodiment, a preset threshold corresponding to the amount of accumulated ash may be preset. The preset threshold may be set experimentally. When the accumulated ash amount of the condenser is smaller than the fourth threshold value, the heat exchange efficiency of the condenser is basically not affected, and when the accumulated ash amount of the condenser is larger than the fourth threshold value, the heat exchange efficiency of the condenser is affected, and at the moment, prompt information can be output.
In general, in the case where the compressor and the condensing fan are operated at the highest rotational speeds, respectively, which means that the output of the chiller system to the external heat radiation has reached the limit, the controller may determine whether the dust attached to the condenser needs to be treated based on the ambient temperature inside the chiller indicated by the first temperature sensor and the outlet temperature of the condenser indicated by the second temperature sensor. On one hand, the realization mode can avoid the problem of low heat exchange efficiency of the condenser caused by ash accumulation of the condenser; on the other hand, the normal operation of the water chiller can be ensured, and the downtime is avoided.
Exemplary apparatus
In order to facilitate the better implementation of the foregoing solutions of the embodiments of the present invention, the present invention further provides a control device, which is described in detail below with reference to the accompanying drawings:
as shown in fig. 3, the control device 30 may include a processor 301, a memory 304, and a communication module 305, where the processor 301, the memory 304, and the communication module 305 may be connected to each other through a bus 306. The memory 304 may be a high-speed random access memory (Random Access Memory, RAM) memory or a nonvolatile memory (non-volatile memory), such as at least one magnetic disk memory. Memory 304 may also optionally be at least one storage system located remotely from the aforementioned processor 301. Memory 304 is used for storing application program codes and may include an operating system, a network communication module, a user interface module, and a data processing program, and communication module 305 is used for information interaction with an external device; the processor 301 is configured to invoke the program code to perform the steps of:
when the compressor and the condensing fan work at a first working point, receiving detection signals of the first temperature sensor and the second temperature sensor, and determining whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor; the first working condition point is used for indicating that the compressor and the condensing fan respectively work at the highest rotating speeds which can work normally.
Wherein the processor 301 determines whether the dust attached to the condenser needs to be processed according to the outlet temperature of the condenser acquired by the second temperature sensor, including:
setting the rotational speed of the condensing fan to a minimum rotational speed in the case that the outlet temperature of the condenser is less than a first threshold value;
setting the rotation speed of the condensing fan to be a target rotation speed when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is less than a second threshold value, wherein the target rotation speed is equal to the highest rotation speed at which the condensing fan can normally work, the minimum rotation speed of the condensing fan and a first tested parameter delta 1 Second empirical parameter delta 2 Related to the following.
Wherein the processor 301 determines whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor, including:
and when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is greater than the second threshold value, outputting prompt information to remind a worker to treat dust attached to the condenser.
The third threshold is the highest temperature that the condensing fan can normally work when maintaining the highest rotating speed.
It should be noted that, for the execution steps of the processor in the control device 30 in the embodiment of the present invention, reference may be made to the specific implementation manner of the operation of the controller in the embodiment of fig. 2a in the above method embodiments, which is not repeated here.
Exemplary computer program product and storage Medium
In addition to the methods and apparatus described above, embodiments of the present application may also be a computer program product comprising computer program instructions which, when executed by a processor, cause the processor to perform the steps in a blind via overlay detection method according to various embodiments of the present application described in the "exemplary methods" section of the present specification.
The computer program product may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server.
Further, embodiments of the present application may also be a storage medium having stored thereon a computer program that is executed by a processor to perform the steps in the blind buried via overlap detection method according to various embodiments of the present application described in the above-described "exemplary method" section of the present specification.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (5)
1. The method is characterized by being applied to a water chiller, wherein the water chiller comprises a water chiller main body, a first temperature sensor, a second temperature sensor and a controller; the method for detecting the accumulated ash of the condenser, in which the compressor is installed inside the main body of the water chiller, comprises the following operations by the controller:
when the compressor and the condensing fan work at a first working point, receiving detection signals of the first temperature sensor and the second temperature sensor, and determining whether dust attached to the condenser needs to be processed according to the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor; the first working point is used for indicating that the compressor and the condensing fan respectively work at the highest rotating speeds which can work normally, and when the compressor and the condensing fan respectively work at the highest rotating speeds, the output of the cooling water machine for external heat radiation reaches the limit; the determining whether the dust attached to the condenser needs to be processed according to the outlet temperature of the condenser acquired by the second temperature sensor comprises the following steps:
setting the rotational speed of the condensing fan to a minimum rotational speed in the case that the outlet temperature of the condenser is less than a first threshold value;
setting the rotation speed of the condensing fan to be a target rotation speed when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is less than a second threshold value, wherein the target rotation speed is equal to the highest rotation speed at which the condensing fan can normally work, the minimum rotation speed of the condensing fan, a first tested parameterSecond empirical parameter->In relation, the following formula:
which is provided withWherein Sp represents a target rotation speed, sp_min represents a minimum rotation speed of the condensing fan, sp_max represents a maximum rotation speed of the condensing fan which can normally work, T represents an ambient temperature acquired by a first temperature sensor, tx represents an outlet temperature of the condenser acquired by a second temperature sensor, δ1 represents a first experimental parameter, δ2 represents a second experimental parameter;
the rotation speed signal is sp_min when tx=t+δ1, and is sp_max when tx=t+δ2, and the intermediate stage Sp linearly changes with the change of Tx.
2. The method of claim 1, wherein the determining whether dust attached to the condenser is required to be treated based on the ambient temperature inside the water chiller acquired by the first temperature sensor and the outlet temperature of the condenser acquired by the second temperature sensor, comprises:
and when the outlet temperature of the condenser is greater than the first threshold value and the temperature difference between the ambient temperature inside the water chiller and the outlet temperature of the condenser is greater than the second threshold value, setting the rotating speed of the condensing fan to be the maximum rotating speed, and outputting prompt information to remind a worker to process dust attached to the condenser.
3. The method of claim 1, wherein when the outlet temperature of the condenser is greater than the first threshold value and a temperature difference between an ambient temperature inside the chiller and the outlet temperature of the condenser is greater than a third threshold value, stopping the chiller while alerting a worker to treat or service dust attached to the condenser.
4. A control device, characterized in that the control device comprises: a processor and a memory, the processor and the memory being interconnected, wherein the memory is adapted to store a computer program, the computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of any of claims 1-3.
5. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of any of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210725006.XA CN115111791B (en) | 2022-06-24 | 2022-06-24 | Water chiller, method and device for detecting dust deposit of condenser and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210725006.XA CN115111791B (en) | 2022-06-24 | 2022-06-24 | Water chiller, method and device for detecting dust deposit of condenser and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115111791A CN115111791A (en) | 2022-09-27 |
| CN115111791B true CN115111791B (en) | 2024-02-09 |
Family
ID=83328537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210725006.XA Active CN115111791B (en) | 2022-06-24 | 2022-06-24 | Water chiller, method and device for detecting dust deposit of condenser and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115111791B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118733A (en) * | 2004-10-19 | 2006-05-11 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN106642558A (en) * | 2016-12-06 | 2017-05-10 | 海信（广东）空调有限公司 | Detection method for dust removal of variable frequency air conditioner heat exchanger |
| CN106949664A (en) * | 2017-03-17 | 2017-07-14 | 合肥美的电冰箱有限公司 | The control method and system, refrigerator and terminal of intelligent maintenance condenser dust stratification |
| CN107084556A (en) * | 2017-06-14 | 2017-08-22 | 合肥美的电冰箱有限公司 | Control method, device and the computer-readable recording medium of condenser |
| WO2018011935A1 (en) * | 2016-07-14 | 2018-01-18 | 三菱電機株式会社 | Refrigerating device |
| WO2018193537A1 (en) * | 2017-04-19 | 2018-10-25 | 三菱電機株式会社 | Air conditioner and control method for fan speed of air conditioner |
| CN113669841A (en) * | 2021-08-31 | 2021-11-19 | 佛山市顺德区美的电子科技有限公司 | Method and device for detecting dust accumulation blockage of air conditioner, air conditioner and storage medium |
| CN215864114U (en) * | 2021-09-16 | 2022-02-18 | 深圳市酷凌时代科技有限公司 | Water chiller with fault detection function |
| CN114492867A (en) * | 2022-01-21 | 2022-05-13 | 三一重机有限公司 | Air conditioner cleaning control method and system and operation equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201320977D0 (en) * | 2013-11-28 | 2014-01-15 | Elstat Electronics Ltd | Heat exchanger fault diagnostic |
-
2022
- 2022-06-24 CN CN202210725006.XA patent/CN115111791B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118733A (en) * | 2004-10-19 | 2006-05-11 | Matsushita Electric Ind Co Ltd | Air conditioner |
| WO2018011935A1 (en) * | 2016-07-14 | 2018-01-18 | 三菱電機株式会社 | Refrigerating device |
| CN106642558A (en) * | 2016-12-06 | 2017-05-10 | 海信（广东）空调有限公司 | Detection method for dust removal of variable frequency air conditioner heat exchanger |
| CN106949664A (en) * | 2017-03-17 | 2017-07-14 | 合肥美的电冰箱有限公司 | The control method and system, refrigerator and terminal of intelligent maintenance condenser dust stratification |
| WO2018193537A1 (en) * | 2017-04-19 | 2018-10-25 | 三菱電機株式会社 | Air conditioner and control method for fan speed of air conditioner |
| CN107084556A (en) * | 2017-06-14 | 2017-08-22 | 合肥美的电冰箱有限公司 | Control method, device and the computer-readable recording medium of condenser |
| CN113669841A (en) * | 2021-08-31 | 2021-11-19 | 佛山市顺德区美的电子科技有限公司 | Method and device for detecting dust accumulation blockage of air conditioner, air conditioner and storage medium |
| CN215864114U (en) * | 2021-09-16 | 2022-02-18 | 深圳市酷凌时代科技有限公司 | Water chiller with fault detection function |
| CN114492867A (en) * | 2022-01-21 | 2022-05-13 | 三一重机有限公司 | Air conditioner cleaning control method and system and operation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115111791A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104956155B (en) | System and method for controlling a system that includes variable speed compressor | |
| CN109373538B (en) | Outdoor fan control method and device and air conditioner | |
| CN107676939B (en) | Control method, control system and control device of fixed-frequency air conditioner | |
| CN110749053A (en) | Control method and device of air conditioner | |
| CN102980274A (en) | Fan control method and device for precision air conditioning system and precision air conditioning system | |
| CN112524773B (en) | Method and device for determining opening of electronic expansion valve | |
| WO2018188521A1 (en) | Air conditioner heating operation control method | |
| CN110579010A (en) | Control method and control device for electronic expansion valve of multi-split internal machine and air conditioner | |
| CN110594947A (en) | Control method and control device of air conditioner and air conditioner | |
| CN115111791B (en) | Water chiller, method and device for detecting dust deposit of condenser and readable storage medium | |
| KR20170109794A (en) | Comfortable and energy saving management method for air conditioner by real time interior temperature load in small and medium building | |
| CN114754460B (en) | Air conditioner control method and device, air conditioner and storage medium | |
| CN113203166A (en) | Noise reduction control method and device for multi-connected air conditioner and multi-connected air conditioner | |
| KR20240047419A (en) | Rotational speed control methods, systems, devices and storage media | |
| CN110285530A (en) | Control method, air-conditioner control system, machine readable storage medium and air-conditioning system | |
| CN111780375B (en) | Energy-saving control method and system of air conditioner, storage medium and air conditioner | |
| CN110553369B (en) | Multi-fan cooling tower control method, cooling tower and air conditioner | |
| US11287810B2 (en) | Industrial process control coordination and implementation utilizing a facility prescription from a remote server | |
| CN109669486B (en) | Controller performance evaluation method and device, readable medium and electronic equipment | |
| US20210119450A1 (en) | Energy conservation using active demand stabilization | |
| CN111550910A (en) | Variable-frequency precision air conditioner and dehumidification control method and storage medium thereof | |
| CN106979169A (en) | A kind of fan speed regulation control method and equipment | |
| CN113834180B (en) | Self-adaptive method, device and system for multi-split long-connected pipe output | |
| CN115450943A (en) | Intelligent fan speed regulating method and device for solving fuzzy temperature detection and storage medium | |
| WO2022267277A1 (en) | Power grid-friendly control method and system for data center refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |