KR20150138560A - Apparatus for PHE cleaning without separation - Google Patents

Apparatus for PHE cleaning without separation Download PDF

Info

Publication number
KR20150138560A
KR20150138560A KR1020140065473A KR20140065473A KR20150138560A KR 20150138560 A KR20150138560 A KR 20150138560A KR 1020140065473 A KR1020140065473 A KR 1020140065473A KR 20140065473 A KR20140065473 A KR 20140065473A KR 20150138560 A KR20150138560 A KR 20150138560A
Authority
KR
South Korea
Prior art keywords
plate
piezoelectric element
fixing
fixing plate
heat exchanger
Prior art date
Application number
KR1020140065473A
Other languages
Korean (ko)
Inventor
최광근
안은정
유현중
이원권
김경민
권혁민
곽승신
Original Assignee
주식회사 지앤지인텍
한국지역난방공사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 지앤지인텍, 한국지역난방공사 filed Critical 주식회사 지앤지인텍
Priority to KR1020140065473A priority Critical patent/KR20150138560A/en
Publication of KR20150138560A publication Critical patent/KR20150138560A/en

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • B08B7/026—Using sound waves
    • B08B7/028—Using ultrasounds

Abstract

The present invention relates to a non-separation type cleaning apparatus for a plate heat exchanger. The present invention relates to a plate heat exchanger including a plurality of heat transfer plates laminated between a fixing plate and a fastening plate, wherein the fixing plate and the fastening plate are provided with an ultrasonic generator including at least one piezoelectric element, Is installed in close contact with the fixing plate or the fastening plate so as to prevent an air layer from being formed on a wide upright flat surface of the fastening plate and the fastening plate and is electrically connected to the power supply via the oscillating unit.
Accordingly, since the piezoelectric element of the ultrasonic wave generating device is provided on the wide upright flat surface of the fixing plate or tightening plate, which is an essential component of the plate heat exchanger, the piezoelectric element can be firmly and tightly installed on the fixing plate and tightening plate without air layer, (Vibration power) over the entire area of the heat transfer plate to generate a cavitation phenomenon or a vibration phenomenon by ultrasonic waves, so that the scale on the heat transfer plate can be reliably removed.

Description

Technical Field [0001] The present invention relates to an apparatus for cleaning a plate type heat exchanger,

The present invention is characterized in that an ultrasonic wave generating device including a piezoelectric element is provided on an upright flat surface of a fixing plate or a clamping plate constituting a plate heat exchanger and cavitation or vibrations caused by ultrasonic waves generated by applying power to a piezoelectric element of the ultrasonic wave generating device The present invention relates to a non-separating type cleaning apparatus for a plate heat exchanger which removes scale of each heat transfer plate (a plurality of heat transfer plates connected between a fixing plate and a clamping plate)

Generally, the plate heat exchanger has a fixing plate, a support at a position spaced apart from the fixing plate by a predetermined distance, the upper and lower ends of the fixing plate and the support being fixed by the upper and lower guide bars, A plurality of heat transfer plates are stacked at a narrow interval from the support to the support, a fastening plate is installed on the outermost heat transfer plate between the support and the heat transfer plate, and the fastening plate and the fastening plate are fastened by fastening several fastening rods along the rim And the heat transfer plates between the plate and the fixing plate are kept airtight to each other.

Airtightness is maintained between the fixing plates and the fastening plates on the outside of the heating plates as well as by the gasket.

The plate-type heat exchanger constructed as described above has a plurality of flow paths formed on both side surfaces of a heat transfer plate, and a heat exchanger for transferring heat to fluids adjacent to each other through the heat transfer plate while flowing fluids having different temperatures through the flow path between the heat transfer plates .

In order to perform the heat exchange as described above, a scale called a scale is generated at a portion where the metal, which is the inner wall of the flow path formed in the heat transfer plate, comes into contact with the fluid flowing through the flow path. If the scale is not periodically removed, There is a problem in that it is not only deteriorated but also interrupts the flow of the fluid.

As a method for solving the problem of the cleaning of the plate heat exchanger, there is known a chemical cleaning method which is currently mainstream and a cleaning method which uses ultrasonic waves. In the above chemical cleaning method, first, the system equipment is stopped, and then the heat transfer plates are disassembled from the fixing plate and the clamping plate, immersed in the chemical bath in which the chemical is dissolved, taken out, cleaned, assembled and cleaned. At this time, cleaning of the heat transfer plate may be performed using a high-pressure nozzle or a cleaning brush.

In the chemical cleaning method, the plate heat exchanger is disassembled, cleaned, and assembled repeatedly at a predetermined cycle. The repetitive decomposition, cleaning and assembly of the plate heat exchanger shortens the life of the plate heat exchanger, And the like.

In the ultrasonic cleaning method, unlike a chemical detergent cleaning method, the plate heat exchanger is not disassembled, an ultrasonic wave generator is installed in a plate heat exchanger, and the scale of each heat transfer plate is removed by using cavitation or vibration phenomenon caused by ultrasonic waves generated by irradiating ultrasonic waves It is a method of cleaning.

The ultrasonic cleaning method is characterized in that the vibration transmitting plate is pressed and fixed to the side of the heat transfer plates by a tight fitting device and the ultrasonic wave generating device is welded to the vibration transmitting plate as shown in the patent documents of the prior art documents.

In the ultrasonic cleaning apparatus of the above-mentioned patent document, a point is formed on the vibration transmitting plate and the waveguide of the ultrasonic wave generating apparatus is locally contact fixed, so that heat is generated in the contact portion between the transmitting plate and the waveguide due to the ultrasonic vibration So that cracks are generated even in the vibration transmitting plate, which eventually leads to breakage.

In addition, when the vibration transmitting plate is pressed against the side surfaces of the heat transfer plates arranged at predetermined intervals, it is difficult to secure the side surfaces of the heat transfer plates in a normal manner since the side surface, which is usually the outer rim of the heat transfer plates, can not be assembled flat. If there is an air layer between the vibration transmitting plate and the heat transfer plates, the ultrasonic wave generated by the ultrasonic wave generating device can not be transmitted. Therefore, even if the ultrasonic waves are irradiated from the outside of the heat transfer plate, There is a problem that the ultrasonic generator may be damaged if the ultrasonic generator is severely damaged.

KR 10-2012-0015959 A (Released on February 22, 2012)

SUMMARY OF THE INVENTION The present invention has been researched and developed to solve the problems of the conventional scale removing apparatus as described above. The present invention provides the ultrasonic generator with the piezoelectric element of the ultrasonic generator on the wide upright flat surface of the fixing plate or the fastening plate, (Vibration power) over the entire area of the heat transfer plate, so that cavitation phenomenon or vibration due to ultrasonic waves or vibration And a scale on the heat transfer plate can be reliably removed since the development can be obtained.

Another object of the present invention is to provide a piezoelectric element so as to be opposed to a fixing plate and a fastening plate so that when the piezoelectric element is provided so as to face the fixing plate and the fastening plate, (Vibration power) of a flat plate type heat exchanger capable of reliably removing the scale on the heat plate, thereby providing a relatively uniform wavelength (vibration power) over the plate.

Another object of the present invention is to securely fix and fix a piezoelectric element to a fixing plate or a clamping plate by a fixing means such as bolt or rivet to a fixing plate or a clamping plate and selectively applying an adhesive between the clamping plate and the clamping plate, A non-separation type of plate heat exchanger capable of reliably transferring cavitation or vibration phenomenon caused by ultrasonic waves of a piezoelectric element to each heat transfer plate through a fixing plate and a fastening plate to remove the scale of the heat transfer plate And to provide a cleaning device.

According to an aspect of the present invention, there is provided a plate heat exchanger including a plurality of heat transfer plates laminated between a fixing plate and a fastening plate, wherein the fixing plate or the clamping plate includes an ultrasonic generator including at least one piezoelectric element Wherein the piezoelectric element of the ultrasonic wave generator is closely attached to a wide upright flat surface of a fixing plate or a fastening plate so as to prevent an air layer from being formed, and is electrically connected to a power source through an oscillating portion.

Although the piezoelectric element is described as being selectively installed on the fixing plate or the clamping plate, it can be installed facing the fixing plate and the clamping plate. When the fixing plate and the clamping plate are disposed to face each other, And are arranged so as to cross each other so as to give a relatively uniform wavelength (vibration power) over the area.

The ultrasonic generator includes a piezoelectric element provided on a wide upright flat surface of a fixing plate or a clamping plate, a cover attached to the fixing plate or the clamping plate so as to cover the piezoelectric element, and a cover provided on the cover to be electrically connected to the piezoelectric element And an oscillating portion electrically connected to the piezoelectric element via the connector and the connector.

It is known that the piezoelectric element generally requires a power of 1 watt against a cleaned area of 1 cm 2. First, the power of the piezoelectric element to be used is selected, and the power of the piezoelectric element is sufficiently applied to the area of the heat transfer plate The size and the number of the piezoelectric elements must be selected so that they can be selected within a range of 3 to 8 cm in diameter.

The ultrasonic frequency of the piezoelectric element can be selected in the range of 30 kHz to 100 kHz, but preferably adopts a piezoelectric element which is capable of generating ultrasound of about 40 kHz, which is mainly applied to cleaning and does not adversely affect the adhesive material Suitable. If the ultrasonic frequency is less than 30 kHz, there is a problem that the power is too strong, so that a high temperature is generated in the material of the fixing plate, the fastening plate and the heat transfer plate constituting the plate heat exchanger, and even cracks are generated. When the ultrasonic frequency exceeds 100 kHz The generation strength of cavitation is too weak to obtain a proper cleaning effect.

The irradiation of the ultrasonic waves can be periodically irradiated with a continuous irradiation or an irradiation period of 10 seconds to 30 seconds according to the use environment of the plate heat exchanger.

The piezoelectric element is fixedly attached to a fixing plate or a clamping plate by a fixing means. The fixing means includes a tap groove provided on a fixing plate and a clamping plate at a position where the piezoelectric element is to be installed, And a bolt fastened to the piezoelectric element through a first through hole of the piezoelectric element to firmly attach and fix the piezoelectric element.

The fixing means includes a counterbore-shaped second through-hole provided in a fixing plate and a clamping plate at a position where the piezoelectric element is to be installed, a first through-hole provided at the center of the piezoelectric element, And a rivet for attaching and fixing the piezoelectric element to the clamping plate.

According to the non-separation type cleaning apparatus for a plate heat exchanger of the present invention, a piezoelectric element of an ultrasonic wave generator is provided on a wide upright flat surface of a fixing plate or a fastening plate which is an essential component of a plate heat exchanger, (Vibration power) is applied over the entire area of the heat transfer plate, so that cavitation phenomenon or vibration phenomenon by ultrasonic waves can be obtained. Therefore, the scale on the heat transfer plate Can be reliably removed.

Further, in the present invention, when the piezoelectric element is provided so as to be opposed to the fixing plate and the clamping plate so as to face each other on the fixing plate and the clamping plate, the piezoelectric elements are cross- A relatively uniform wavelength (vibration power) can be imparted, and the scale on the heat transfer plate can be reliably removed.

Further, in the present invention, a piezoelectric element is firmly fixed to a fixing plate and a clamping plate by fixing means such as bolts or rivets to a fixing plate and a clamping plate, and an adhesive is selectively applied between the clamping plate and the clamping plate and the piezoelectric element, It is possible to reliably transfer the cavitation or vibration phenomenon caused by the ultrasonic waves of the piezoelectric element to the respective heat transfer plates through the fixing plate and the fastening plate, thereby removing the scale of the heat transfer plate.

FIG. 1 is a schematic view of a conventional plate heat exchanger to which a non-separation type cleaning apparatus according to the present invention can be applied.
2 is a detailed view of a plate-type heat exchanger equipped with an ultrasonic wave generating device which is a main part of the present invention.
Figure 3 is a side view of Figure 2;
4 and 5 are detailed views showing embodiments in which the piezoelectric element of the ultrasonic wave generator is fixed to the fixing plate in FIG.
6 is a graph showing the power depending on the size of the piezoelectric element and the vibrator.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative, And it can be changed according to the user, the intention of the operator, the custom, and so on. Therefore, the definition of this term should be based on the contents of this specification.

1 to 5 are views for explaining a non-separation type cleaning apparatus for a plate heat exchanger according to the present invention.

As shown in the figure, the plate type heat exchanger 10 is provided at a position spaced apart from the fixing plate 11 by a predetermined distance in opposition to a support 12, and the upper end of the fixing plate 11, A plurality of heat transfer plates 15 are stacked at a narrow interval from one side of the fixing plate 11 to the support 12 and the lower side of the support 12 is fixed to the support 12 by the upper and lower guide bars 13, A fastening plate 16 is provided on the outermost heat transfer plate 15 between the heat transfer plates 15. The fastening plate 16 and the fastening plate 11 are fastened by arranging several fastening rods 17 in the direction in which the heat conductive plates 15 are stacked along the rim of the fastening plate 16 and the fastening plate 11, (15) are hermetically held together.

As shown in FIG. 2, the fixing plate 11 and the clamping plate 16 are erected in the upright (vertical) direction and have wide upright flat surfaces 11a and 16a formed on the outer side thereof. The fixing plate 11, The ultrasonic generator 20 is provided on the upright flat surfaces 11a and 16a of the piezoelectric element 16 and the ultrasonic generator 20 includes at least one piezoelectric element 21 and the piezoelectric element 21 is connected to the oscillation portion 22 are electrically connected to each other through a power supply. The number of the piezoelectric elements 21 to be installed may be one or more than two, depending on the size of the plate-type heat exchanger 10 and the use environment.

The ultrasonic generator 20 includes a piezoelectric element 21 provided on the wide upright flat surfaces 11a and 16a of the fixing plate 11 and the clamping plate 16 and a fixing plate A connector 23 provided on the cover 23 and electrically connected to the piezoelectric element 21 and a connector 23 mounted on the piezoelectric element 21 through the connector 23, And an oscillation part 22 electrically connected to the oscillator 21.

The oscillator 22 is equipped with a controller for adjusting the frequency and is connected to a power source. The cover 23 is attached to the fixing plate 11 or the clamping plate 16 with a fastening member such as a screw (not shown).

The piezoelectric element 21 is installed on the upright flat surfaces 11a and 16a of the fixing plate 11 and the clamping plate 16 so that the piezoelectric element 21 is installed so as to be in close contact with the fixed plate 11 . As shown in Fig. 6 (a), when a vibrator having the same size as that of the piezoelectric element 21 is provided and operated, the piezoelectric element 21 exhibits a sharp-pointed power that rises from the edge to the center of the oscillator, When the fixed plate 11 or the clamping plate 16, which is larger and wider than the piezoelectric element 21, is used as the vibrator of the piezoelectric element 21, the edge and center portion of the fixed plate 11, which is a vibrator, (Vibration power) can be imparted over the entire area of the heat transfer plate 15, and cavitation phenomenon or vibration phenomenon due to the ultrasonic wave having such a uniform wavelength can be obtained, It is possible to reliably remove the scale on the screen.

The piezoelectric element 21 can be selectively installed on only one of the fixing plate 11 and the clamping plate 16. The piezoelectric element 21 can be mounted on the upright flat surfaces 11a and 16a on the outer sides of the fixing plate 11 and the clamping plate 16, They can be installed facing each other. In the case where the fixing plate 11 and the fastening plate 16 are disposed facing each other as described above, they are disposed so as not to overlap each other so as to more uniformly provide a higher wavelength (vibration power) over the entire area of the heat transfer plate 15 .

It is known that the piezoelectric element 21 needs a power of 1 w per 1 cm 2 of cleaning area. First, the power of the piezoelectric element 21 to be used is selected, and the power of the piezoelectric element 21 is applied to the heat conductive plate 16), the size and the number of the piezoelectric elements should be selected so that sufficient ultrasonic waves can be generated. Accordingly, it is preferable that the size of the piezoelectric element 21 is selected so that the minimum number of the piezoelectric elements 21 can be attached, and the diameter thereof is selected within the range of 3 to 8 cm.

The ultrasonic frequency of the piezoelectric element 21 can be selected in the range of 30 kHz to 100 kHz. The reason for limiting the ultrasonic frequency in this way is that when the ultrasonic frequency is less than 30 kHz, the power is too strong, and the heat generated in the fixing plate, the fastening plate and the heat transfer plate constituting the plate heat exchanger, If the ultrasonic frequency exceeds 100 kHz, the generation strength of cavitation is too weak to obtain a proper cleaning effect.

For this reason, it is suitable to adopt a piezoelectric element which can generate ultrasound of about 40 kHz which is mainly applied to cleaning and does not adversely affect the adhesive material.

The irradiation of the ultrasonic waves may be continuously performed or the irradiation may be periodically performed with an ultrasonic irradiation period of 10 to 30 seconds. It is preferable that the irradiation period of the ultrasonic waves is adopted considering the use environment of the plate heat exchanger or the entire system.

It is preferable that the piezoelectric element 21 is firmly fixed to the fixing plate 11 or the clamping plate 16 by fixing means. 4, the fixing means is provided with a tap groove 11b in the fixing plate 11 and the clamping plate 16 at a position where the piezoelectric element 21 is to be installed, and the center of the piezoelectric element 21 And the bolt 26 is fastened to the tab groove 11b through the first through hole 21a of the piezoelectric element 21 so that the fastening plate 11 and the fastening plate 16 are fastened together. The piezoelectric element 21 can be securely attached and fixed.

5, the fixing means includes a counterbore type second through hole (not shown) so that the head of the rivet is prevented from protruding from the fixing plate 11 and the clamping plate 16 at positions where the piezoelectric element 21 is to be installed, A first through hole 21a is formed at the center of the piezoelectric element 21 and the rivet 27 is passed through the first through hole 21a and the second through hole 11c, The piezoelectric element 21 can be firmly fixed to the fixing plate 11 and the clamping plate 16 by forming a head at both ends of the rivet 27 using the clamping plate 16 and the clamping plate 16.

When the piezoelectric elements 21 are fixed to the upright flat surfaces 11a and 16a of the fixing plate 11 and the clamping plate 16 by the predetermined fixing means as described above, 11a, 16a and the piezoelectric element 21, they are firmly and tightly fixed to each other more securely, whereby the upright flat surfaces 11a, 16a and the piezoelectric element 21 are fixedly attached without an air layer The scale of the heat transfer plate can be removed by surely transmitting the cavitation or vibration phenomenon of the piezoelectric element 21 by the ultrasonic waves to the respective heat transfer plates 15 through the fixing plate 11 and the fastening plate 16.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

10: plate heat exchanger 11: fixed plate
11a, 16a: Upright flat surface 12: Support
13: upper guide bar 14: lower guide bar
15: heat transfer plate 16: tightening plate
20: ultrasonic wave generator 21: piezoelectric element
22: oscillation portion 23: cover
24: Connector

Claims (6)

A plate heat exchanger comprising a plurality of heat transfer plates stacked and arranged between a fixing plate and a fastening plate,
The ultrasonic generator includes at least one piezoelectric element on the fixing plate and the clamping plate. The piezoelectric element of the ultrasonic generator is installed in close contact with the fixing plate or the fastening plate so as to prevent air layer from forming on the wide flat surface, And the second heat exchanger is electrically connected to the second heat exchanger. The method according to claim 1,
The ultrasonic generator includes a piezoelectric element provided on a wide upright flat surface of a fixing plate or a clamping plate, a cover attached to the fixing plate or the clamping plate so as to cover the piezoelectric element, and a cover provided on the cover to be electrically connected to the piezoelectric element A connector, and an oscillating part electrically connected to the piezoelectric element through the connector. The method according to claim 1 or 2,
Characterized in that the piezoelectric elements are arranged to face each other on the fixing plate and the clamping plate and are arranged so as to cross each other without overlapping so as to more reliably provide a relatively uniform wavelength over the entire area of the heat transfer plate. Device. The method according to claim 1 or 2,
Wherein the piezoelectric element is firmly fixed to the fixing plate or the clamping plate by fixing means. The method of claim 4,
The fixing means includes a tap groove provided at a fixing plate and a clamping plate at a position where the piezoelectric element is to be installed, a first through hole provided at the center of the piezoelectric element, and a through hole through the first through hole of the piezoelectric element, And a bolt for firmly attaching and fixing the element to the plate-type heat exchanger. The method of claim 4,
The fixing means includes a first through hole provided in the center of the piezoelectric element, a second through hole in the form of a counterbore provided on a fixing plate or a clamping plate at a position where the piezoelectric element is to be installed, A fixing plate, and a fixing plate, and a rivet for fixing and fixing the piezoelectric element to the fixing plate.
KR1020140065473A 2014-05-29 2014-05-29 Apparatus for PHE cleaning without separation KR20150138560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140065473A KR20150138560A (en) 2014-05-29 2014-05-29 Apparatus for PHE cleaning without separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140065473A KR20150138560A (en) 2014-05-29 2014-05-29 Apparatus for PHE cleaning without separation

Publications (1)

Publication Number Publication Date
KR20150138560A true KR20150138560A (en) 2015-12-10

Family

ID=54978957

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140065473A KR20150138560A (en) 2014-05-29 2014-05-29 Apparatus for PHE cleaning without separation

Country Status (1)

Country Link
KR (1) KR20150138560A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288885A (en) * 2016-10-13 2017-01-04 上海兴全电力技术有限公司 Non-scaling lamella heat exchanger
CN108362162A (en) * 2018-03-19 2018-08-03 华北电力大学 A kind of heat-exchange apparatus
KR20210098638A (en) 2020-02-03 2021-08-11 김용설 Ultrasonic cleaning device for plate heat exchanger
CN116105535A (en) * 2023-03-01 2023-05-12 东北电力大学 Ultrasonic cleaning device for air cooler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288885A (en) * 2016-10-13 2017-01-04 上海兴全电力技术有限公司 Non-scaling lamella heat exchanger
CN108362162A (en) * 2018-03-19 2018-08-03 华北电力大学 A kind of heat-exchange apparatus
KR20210098638A (en) 2020-02-03 2021-08-11 김용설 Ultrasonic cleaning device for plate heat exchanger
CN116105535A (en) * 2023-03-01 2023-05-12 东北电力大学 Ultrasonic cleaning device for air cooler

Similar Documents

Publication Publication Date Title
KR20150138560A (en) Apparatus for PHE cleaning without separation
TWI669186B (en) Device and method for deburring components by means of ultrasound
JP6928079B2 (en) Systems and methods for cleaning equipment
KR20120025637A (en) Segmental ultrasonic cleaning equipment for removing the scale and sludge on the top of tube-sheet in a heat exchanger
JP4745443B2 (en) Megasonic cleaning module
KR20150127696A (en) Ultrasonically cleaning vessels and pipes
US9950823B2 (en) Apparatus for ultrasonic welding
US20100052278A1 (en) Apparatus for transporting generator coils
EP3976282B1 (en) A system and use of the system for cleaning a device
RU2283546C2 (en) Product flow heater
GB2449759A (en) Methods for cleaning generator coils
KR101801927B1 (en) Non-separable cleaning apparatus for plate type heat exchanger with easy transfer of ultrasonic waves
RU2487765C2 (en) Device for ultrasound cleaning of working holders and fuel assemblies of nuclear reactors
KR102065067B1 (en) An ultrasonic cleaning device based on multi-ultrasonic vibrator that drive multiple frequencies simultaneously
KR100424351B1 (en) Ultrasonic cleaning apparatus
KR101575001B1 (en) Ultrasonic washing nozzle apparatus for panel
KR102640574B1 (en) Ultrasonic cleaning apparatus for plate heat exchanger
US20090133712A1 (en) Methods for cleaning generator coils
JPH1175722A (en) Treating apparatus
US10350930B2 (en) Screen printing apparatus and method including a printing screen having a wave guide driven to induce ultrasonic vibrations in the screen
JP7282472B2 (en) ultrasonic shower cleaner
KR101858226B1 (en) Crack repairing method for deterring growth of surface cracks on the wall using ultrasound
KR20230075323A (en) ultrasonic shower cleaning device
KR20220141069A (en) Ultrasonic vibrator for ultrasonic cleaner
KR20150038839A (en) Painting pre-processing ultrasonic apparatus

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment