CN114136025A - Evaporative condenser unit - Google Patents

Evaporative condenser unit Download PDF

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Publication number
CN114136025A
CN114136025A CN202111676158.7A CN202111676158A CN114136025A CN 114136025 A CN114136025 A CN 114136025A CN 202111676158 A CN202111676158 A CN 202111676158A CN 114136025 A CN114136025 A CN 114136025A
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CN
China
Prior art keywords
evaporative condenser
condenser unit
condenser
liquid
spraying liquid
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Pending
Application number
CN202111676158.7A
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Chinese (zh)
Inventor
宋斌
吴刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Envicool Technology Co Ltd
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Shenzhen Envicool Technology Co Ltd
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Priority to CN202111676158.7A priority Critical patent/CN114136025A/en
Publication of CN114136025A publication Critical patent/CN114136025A/en
Pending legal-status Critical Current

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    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B5/00—Condensers employing a combination of the methods covered by main groups F28B1/00 and F28B3/00; Other condensers
    • 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
    • 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
    • F28G7/00—Cleaning by vibration or pressure waves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The embodiment of the invention provides an evaporative condenser unit, which is used for removing scales on the surface of a condenser, so that the heat exchange efficiency of the condenser is improved. The evaporative condenser unit provided by the embodiment of the invention comprises a condenser, a spraying device for spraying liquid to the condenser, and a spraying liquid collecting tank positioned on the lower side of the condenser, and is characterized by further comprising an anode substitution device contacted with the spraying liquid sprayed by the spraying device and/or the spraying liquid to be sprayed, a temperature sensor for detecting the temperature of the spraying liquid, and an ultrasonic descaling device for removing scale bodies in the evaporative condenser unit, wherein the reducibility of the material of the anode substitution device is higher than that of the contact part of the condenser and the liquid.

Description

Evaporative condenser unit
Technical Field
The invention relates to the technical field of condensation, in particular to an evaporative condenser unit.
Background
At present, a certain amount of cathode ions, such as Cl-, (OH) -; the part of cathode ions is easy to generate electrochemical reaction with condenser materials, so that the condenser is lost; the better the heat exchange effect, the larger (thin) the heat exchange surface area per unit mass, the faster and more severe the loss.
And anode ions such as Ca in the spray solution2+It will precipitate on the surface of the condenser to form a certain scale, and the scale on the surface of the condenser will not only wear down the condenser but also affect the heat exchange efficiency of the condenser.
How to effectively solve the problem of descaling the condenser is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The embodiment of the invention provides an evaporative condenser unit, which is used for removing scales on the surface of a condenser, so that the heat exchange efficiency of the condenser is improved.
The embodiment of the application provides an evaporative condenser unit, including the condenser, be used for to condenser spun liquid's spray set with be located the spray liquid collecting vat of condenser downside, its characterized in that, still include with spray set spun spray liquid and/or wait to spout the positive pole substitute device that spray liquid contacted, detect the temperature sensor of spray liquid temperature, and clear away the ultrasonic wave scale removal device of the scale body in the evaporative condenser unit, wherein, the reducibility of positive pole substitute device material is higher than condenser and the reducibility of liquid contact part material.
Preferably, the ultrasonic descaling device comprises an ultrasonic generator and an ultrasonic energy conversion head, wherein the ultrasonic energy conversion head is installed in a liquid loop between the spraying device and the spray liquid collecting tank.
Preferably, the temperature sensor is arranged in the spray liquid collecting tank.
Preferably, the evaporative condenser unit further comprises a fan for driving air through the condenser.
Preferably, the evaporative condenser unit further comprises a flow detector for detecting the flow of the spray liquid.
Preferably, the evaporative condenser unit further comprises a timer.
Preferably, the evaporative condenser unit further comprises a processor in communication connection with the temperature sensor, the flow detector, the timer, the fan and the ultrasonic descaling device, and the processor is configured to:
acquiring the temperature of the spraying liquid through the temperature sensor;
and if the temperature of the spraying liquid is higher than the preset temperature, controlling the ultrasonic descaling device to be in a working state so as to be used for clearing away scales in the evaporative condenser unit.
Preferably, the processor is further configured to:
if the temperature of the spraying liquid is not higher than the preset temperature, the flow of the spraying liquid is obtained through the flow detector;
and if the flow of the spraying liquid is greater than the preset flow value, controlling the ultrasonic descaling device to be in a working state so as to be used for removing the scale in the evaporative condenser unit.
Preferably, the processor is further configured to:
if the flow of the spraying liquid is not greater than the preset flow value, acquiring the rotating speed of the fan;
calculating the air volume of the fan according to the rotating speed of the fan;
and if the air volume of the fan is larger than the preset air volume value, controlling the ultrasonic descaling device to be in a working state so as to be used for clearing the scale in the evaporative condenser unit.
Preferably, the processor is further configured to:
if the air volume of the fan is not greater than the preset air volume value, acquiring the working time of the condenser through the timer;
and if the working time of the condenser is greater than the time statistical threshold, controlling the ultrasonic descaling device to be in a working state so as to be used for removing the scale in the evaporative condenser unit.
Preferably, the processor is further configured to:
acquiring the working time of the ultrasonic descaling device through the timer;
and if the working time of the ultrasonic descaling device is longer than a preset time threshold, controlling the ultrasonic descaling device to be in a dormant state.
According to the technical scheme, the embodiment of the invention has the following advantages:
the evaporative condenser unit in the embodiment of the application comprises a condenser, a spraying device used for spraying liquid to the condenser, a spraying liquid collecting groove located on the lower side of the condenser, an anode substitution device contacted with the spraying liquid sprayed by the spraying device and/or the spraying liquid to be sprayed, a temperature sensor for detecting the temperature of the spraying liquid, and an ultrasonic descaling device for removing liquid scale in the evaporative condenser unit.
The evaporative condenser unit in this application embodiment not only includes the ultrasonic wave scale removal device, still includes temperature sensor to make evaporative condenser unit in this application embodiment can clear away the dirty body on condenser surface according to the temperature of spraying liquid, control ultrasonic wave scale removal device, thereby promoted the intelligence that the ultrasonic wave scale removal device clears away the dirty body on condenser surface in this application embodiment.
Drawings
FIG. 1 is a schematic diagram of one embodiment of an evaporative condenser assembly in accordance with the present embodiments;
FIG. 2 is a schematic diagram of another embodiment of an evaporative condenser unit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of another embodiment of an evaporative condenser unit according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an embodiment of an ultrasonic descaling process according to an embodiment of the present application;
fig. 5 is a schematic view of another embodiment of an ultrasonic descaling process in the embodiment of the present application.
The drawings are numbered as follows:
the device comprises a condenser 1, a spraying device 2, an anode replacing device 3, a temperature sensor 4, a spraying liquid collecting tank 5, an ultrasonic descaling device 6, a fan 7, a flow detector 8, a timer 9 and a processor 10.
Detailed Description
The embodiment of the invention provides an evaporative condenser unit, which is used for removing scales on the surface of a condenser, so that the heat exchange efficiency of the condenser is improved.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
To avoid anode ions (e.g. Ca) in the spray liquor2+) The surface of the condenser is scaled, thereby affecting the heat exchange efficiency of the surface of the condenser. The embodiment of the application provides an evaporative condenser unit, which is used for removing scales on the surface of a condenser, and is described in detail as follows:
referring to fig. 1, the evaporative condenser unit includes a condenser 1, a spraying device 2, an anode replacing device 3, a temperature sensor 4, a spraying liquid collecting tank 5 and an ultrasonic descaling device 6.
Wherein condenser 1 is inside to form the heat transfer chamber way for the circulation has high temperature fluid, high temperature fluid when the condenser chamber is said, can with the 1 chamber wall between the heat conduction of condenser, so that the heat can transmit to the 1 outside of condenser through the chamber wall of condenser 1, and then makes the heat can be absorbed by 1 outside object of condenser, like air etc. and then plays radiating effect.
The spraying device 2 is used for spraying liquid to the condenser 1, the spraying liquid is contacted with the outer side wall of the condenser 1 or air near the outer side wall, the spraying liquid absorbs heat and evaporates, and then the outer wall of the condenser 1 and the air near the outer wall can be rapidly cooled. The spraying liquid is generally water, but can be other liquid which is easy to evaporate and absorb heat. In order to avoid waste of spray liquid, a spray liquid collecting tank 5 is generally arranged below the spraying device and the condenser, and is used for collecting spray liquid which does not undergo phase change after contacting with air on or near the outer side wall of the condenser 1.
And the reducibility of the material of the anode substitute device 3 is higher than that of the material of the part of the condenser 1, which is in contact with the liquid, so that the anode substitute device 3 can react with cathode ions in the spray liquid more easily than the condenser 1. Because the anode substitution device 3 can be contacted with the spray liquid sprayed by the spray device 2 and/or the spray liquid to be sprayed, the cathode ions in the spray liquid sprayed by the spray device 2 and/or the spray liquid to be sprayed can be more directly reacted with the anode substitution device 3, and then the reaction between the cathode ions in the spray liquid and the liquid contact part material of the condenser 1 is reduced, so that the loss of the condenser is avoided.
The anode replacement device 3 may be a powder type anode replacement device, or may be an anode replacement device 3 having a structure such as a block type, a rod type, a mesh type, or a plate type. The specific anode substitution device 3 is a magnesium part, and Mg (magnesium) is easier to react with cathode ions in the spray liquid than metals such as Al (aluminum), Cu (copper), Fe (iron) and the like; the material of the anode substitution device can be specifically selected according to the material of the condenser, so that the reducibility of the material of the anode substitution device 3 is higher than that of the material of the contact part of the condenser 1 and the liquid.
In addition, it should be noted that the anode replacement device 3 only needs to be in contact with the spraying liquid sprayed by the spraying device, and the position of the anode replacement device 3 in the evaporative condenser unit is not particularly limited.
Furthermore, the spray liquid generally contains certain trace element ions, such as Ca2+And Ca2+It is very easy to combine with carbonate ions in the spray liquid to generate scale calcium carbonate, and the scale calcium carbonate is attached to the surface of the condenser 1.
In order to avoid the heat exchange efficiency of the condenser 1 affected by the scales, the embodiment of the application is provided with the temperature sensor 4 for acquiring the temperature of the spraying liquid and the ultrasonic descaling device 6 for clearing the scales on the surface of the condenser, so that when the temperature of the spraying liquid exceeds a preset threshold value, the ultrasonic descaling device 6 is controlled to clear the scales on the surface of the condenser, and the intelligence for clearing the scales on the surface of the condenser by the ultrasonic descaling device 6 is improved.
As an alternative embodiment, the present embodiment places the temperature sensor 4 in the spray collection tank 5, for improving the accuracy of measuring the temperature of the spray liquid, further, the ultrasonic descaling device 6 comprises an ultrasonic generator 601 and an ultrasonic energy conversion head 602, wherein the ultrasonic transducer head 602 is installed in a liquid loop between the spraying device and the spraying liquid collecting tank, so as to impart the energy of the ultrasonic waves to the spray liquid ejected from the spray device 2, so that liquid ions (such as water ions) of the spray liquid generate cavitation, therefore, shock waves are generated, the shock waves impact scales on the surface of the condenser, and the effect of clearing the scales on the surface of the condenser is achieved. For convenience of understanding, fig. 2 shows a schematic diagram of the arrangement position of the temperature sensor 4 in the evaporative condenser unit and the arrangement position of the ultrasonic transducer head 602.
Based on the embodiment described in fig. 1 and fig. 2, in order to pump out the spray liquid with a high temperature after phase change in time when the spray liquid phase changes, so as to help the condenser dissipate heat, the evaporative condenser unit in the embodiment of the present application further includes a fan 7 for driving the air flow to flow over the surface of the condenser, thereby achieving the purpose of pumping the spray liquid after phase change, so as to dissipate heat of the condenser. Wherein, the fan 7 is arranged at the upper side of the spraying device 2 in the evaporative condenser unit so as to conveniently pump the spraying liquid after phase change.
As an alternative embodiment, in order to better control the ultrasonic descaling device 6 to remove the scale on the surface of the condenser 1, a flow detector 8 and a timer 9 are further disposed in the evaporative condenser unit, and a processor 10 is communicatively connected to the temperature sensor 4, the flow detector 8, the timer 9, the fan 7, and the ultrasonic descaling device 6, see fig. 3 in particular.
It should be noted that the position of the fan in fig. 3 is only one arrangement manner of the fan, and besides, the fan 7 may be arranged between the condenser 1 and the spray liquid collecting tank 5 to blow the spray liquid after phase change.
Based on the evaporative condenser unit shown in fig. 3, in order to better control the ultrasonic descaling device 6 to remove the scale on the surface of the condenser 1, the processor 10 in the embodiment of the present application is further configured to perform the following steps to more accurately remove the scale on the surface of the condenser, please refer to fig. 4:
401. acquiring the temperature of the spraying liquid through the temperature sensor;
as an alternative to real-time, the higher the temperature of the spray liquid, the greater the probability of fouling on the condenser surface.
Therefore, the processor in the embodiment of the present application obtains the temperature of the spray liquid through the temperature sensor, and executes step 402 when the temperature of the spray liquid is higher than the preset temperature.
402. And if the temperature of the spraying liquid is higher than the preset temperature, controlling the ultrasonic descaling device to be in a working state so as to be used for clearing away scales in the evaporative condenser unit.
And if the temperature of the spraying liquid is higher than the preset temperature, the processor controls the ultrasonic descaling device to be in a working state so as to be used for removing the scale in the evaporative condenser unit.
The treater in this application embodiment can be when the temperature that sprays in the liquid is greater than preset temperature, and control ultrasonic wave descaling device is in operating condition for clear away the dirty body in the evaporative condenser unit compares the mode of regularly cleaing away the dirty body in the evaporative condenser unit among the prior art, has promoted the intelligence of scale removal and the accuracy of scale removal.
Based on the embodiment described in fig. 4, in order to further improve the accuracy of cleaning the scale on the surface of the condenser, the processor may further perform the following steps, please refer to fig. 5:
501. if the temperature of the spraying liquid is not higher than the preset temperature, the flow of the spraying liquid is obtained through the flow detector;
if the temperature of spraying liquid is not more than preset temperature, then acquire the flow of spraying liquid through the flow detector, because the flow of spraying liquid is big more, then the possibility of scale deposit on the condenser surface is big more, so this application embodiment can also regard the flow of spraying liquid as the judgement condition whether start ultrasonic wave scale removal device.
The flow rate detector may be implemented by a pump or a dedicated flow rate detector, and the external form of the flow rate detector is not particularly limited herein.
502. And judging whether the flow of the spraying liquid is larger than a preset flow value, if so, executing a step 507, and if not, executing a step 503.
503. If the flow of the spraying liquid is not greater than the preset flow value, acquiring the rotating speed of the fan, and calculating the air volume of the fan according to the rotating speed of the fan;
the larger the rotating speed of the fan is, the larger the air volume of the fan is, and the larger the air volume is, the larger the heat dissipation capacity of the condenser is, and the larger the probability of scaling on the surface of the condenser is.
Therefore, the embodiment of the application can further acquire the rotating speed of the fan when the flow of the spraying liquid is not greater than the preset flow value, calculate the air volume of the fan according to the rotating speed of the fan, and use the air volume of the fan as a judgment condition for starting the ultrasonic descaling device.
504. And judging whether the air volume of the fan is larger than a preset air volume value, if so, executing a step 507, and if not, executing a step 505.
505. If the air volume of the fan is not greater than the preset air volume value, acquiring the working time of the condenser through a timer;
if the air volume of the fan is not larger than the preset air volume value, the working time of the condenser can be further obtained through a timer, and the working time of the condenser is used as a judgment condition for starting the ultrasonic descaling device.
506. And judging whether the working time of the condenser is greater than a time statistical threshold value, if so, executing the step 507, otherwise, returning to execute the step 502.
If the working time of the condenser is not greater than the time statistical threshold, the step 502 is executed again, so that the intelligent control of the ultrasonic descaling device is realized, and the descaling accuracy is improved.
507. And controlling the ultrasonic descaling device to be in a working state so as to be used for removing scales in the evaporative condenser unit.
It is easy to understand that if the temperature of the spray liquid is greater than the preset temperature, or the flow rate of the spray liquid is greater than the preset flow value, or the air volume of the fan is greater than the preset air volume value, or the working time of the condenser is greater than the time statistical threshold value, the ultrasonic descaling device is controlled to be in a working state to be used for removing scales in the evaporative condenser unit, so that the timeliness of descaling is ensured, and the heat exchange efficiency of the condenser is ensured.
Further, after the ultrasonic descaling device is started, the processor can also acquire the working time of the ultrasonic descaling device; and if the working time of the ultrasonic descaling device is longer than a preset time threshold, controlling the ultrasonic descaling device to be in a dormant state, so that the ultrasonic descaling device is prevented from being switched on in a transition manner, and the purpose of saving energy is achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. The evaporative condenser unit comprises a condenser, a spraying device used for spraying liquid to the condenser, and a spraying liquid collecting tank positioned on the lower side of the condenser, and is characterized by further comprising an anode substitution device contacted with the spraying liquid sprayed by the spraying device and/or the spraying liquid to be sprayed, a temperature sensor used for detecting the temperature of the spraying liquid, and an ultrasonic descaling device used for removing scales in the evaporative condenser unit, wherein the reducibility of the anode substitution device material is higher than that of the condenser and the liquid contact part material.
2. The evaporative condenser unit as set forth in claim 1, wherein the ultrasonic descaling device comprises an ultrasonic generator and an ultrasonic transducer head, wherein the ultrasonic transducer head is installed in the liquid loop between the spray device and the spray liquid collection tank.
3. The evaporative condenser unit as set forth in claim 1, wherein the temperature sensor is disposed in the spray liquid collection tank.
4. The evaporative condenser unit as claimed in claim 1, further comprising a fan for driving air through the condenser.
5. The evaporative condenser unit as set forth in claim 4, further comprising a flow detector for detecting the flow of the spray liquid.
6. The evaporative condenser unit as set forth in claim 5, further comprising a timer.
7. The evaporative condenser unit as claimed in claim 6, further comprising a processor in communication with the temperature sensor, the flow detector, the timer, the fan and the ultrasonic descaling device, wherein the processor is configured to:
acquiring the temperature of the spraying liquid through the temperature sensor;
and if the temperature of the spraying liquid is higher than the preset temperature, controlling the ultrasonic descaling device to be in a working state so as to be used for clearing away scales in the evaporative condenser unit.
8. The evaporative condenser unit as claimed in claim 7, wherein the processor is further configured to:
if the temperature of the spraying liquid is not higher than the preset temperature, the flow of the spraying liquid is obtained through the flow detector;
and if the flow of the spraying liquid is greater than the preset flow value, controlling the ultrasonic descaling device to be in a working state so as to be used for removing the scale in the evaporative condenser unit.
9. The evaporative condenser unit as set forth in claim 8, wherein the processor is further configured to:
if the flow of the spraying liquid is not greater than the preset flow value, acquiring the rotating speed of the fan;
calculating the air volume of the fan according to the rotating speed of the fan;
and if the air volume of the fan is larger than the preset air volume value, controlling the ultrasonic descaling device to be in a working state so as to be used for clearing the scale in the evaporative condenser unit.
10. The evaporative condenser unit as defined in claim 9, wherein the processor is further configured to:
if the air volume of the fan is not greater than the preset air volume value, acquiring the working time of the condenser through the timer;
and if the working time of the condenser is greater than the time statistical threshold, controlling the ultrasonic descaling device to be in a working state so as to be used for removing the scale in the evaporative condenser unit.
11. The evaporative condenser unit as claimed in any one of claims 7 to 10, wherein the processor is further configured to:
acquiring the working time of the ultrasonic descaling device through the timer;
and if the working time of the ultrasonic descaling device is longer than a preset time threshold, controlling the ultrasonic descaling device to be in a dormant state.
CN202111676158.7A 2021-12-31 2021-12-31 Evaporative condenser unit Pending CN114136025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111676158.7A CN114136025A (en) 2021-12-31 2021-12-31 Evaporative condenser unit

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Application Number Priority Date Filing Date Title
CN202111676158.7A CN114136025A (en) 2021-12-31 2021-12-31 Evaporative condenser unit

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US6871507B1 (en) * 2003-12-19 2005-03-29 Aaron Goldsmith Expansion valve metered control of water misters
US20090188645A1 (en) * 2008-01-28 2009-07-30 Intec, Inc Tube fouling monitor
CN210862304U (en) * 2019-11-21 2020-06-26 叶田友 Evaporation air cooler convenient to clear away dirt
CN211823282U (en) * 2020-04-07 2020-10-30 山东七十二度制冷设备有限公司 Composite evaporative condenser capable of reducing scaling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001219132A (en) * 2000-02-08 2001-08-14 Maruyasu Industries Co Ltd Self-preventing/automatic removing structure for adhesion of scale to tube wall
US6871507B1 (en) * 2003-12-19 2005-03-29 Aaron Goldsmith Expansion valve metered control of water misters
US20090188645A1 (en) * 2008-01-28 2009-07-30 Intec, Inc Tube fouling monitor
CN210862304U (en) * 2019-11-21 2020-06-26 叶田友 Evaporation air cooler convenient to clear away dirt
CN211823282U (en) * 2020-04-07 2020-10-30 山东七十二度制冷设备有限公司 Composite evaporative condenser capable of reducing scaling

Non-Patent Citations (2)

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Title
刘军辉: "《聚合物光学元件的精密注射成型优化技术》", 机械工业出版社, pages: 76 - 77 *
焦庆祝 等: "《工业设备化学清洗技术》", 30 June 1995, 石油工业出版社, pages: 33 - 34 *

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