CN114877725A

CN114877725A - Anti-frosting efficient plate heat exchanger

Info

Publication number: CN114877725A
Application number: CN202210082919.4A
Authority: CN
Inventors: 郭亚军; 蒋亚亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-08-09

Abstract

The invention relates to the field of plate heat exchangers, and discloses an anti-frosting high-efficiency plate heat exchanger, which judges whether a defrosting mode is started for defrosting through a humidity detector and a first temperature sensor, avoids surface frosting caused by long-time exposure and outupt of the heat exchanger, influences normal use of the heat exchanger during cold start, high-temperature water for defrosting flows along the inner walls of two sides of a fluid cavity, transfers heat to the surfaces of a plurality of heat exchange plates, carries out 'surrounding' rapid heating defrosting on four sides of the plates, obtains heat exchange rate through a second temperature sensor and a third temperature sensor, judges whether the defrosting mode needs to be started for cleaning internal scale, respectively controls a first electromagnetic valve, a fifth electromagnetic valve, the first electromagnetic valve and the third electromagnetic valve to be divided into time-sharing sections to open channels through a controller, and respectively closes other residual valves under two conditions, and a liquid pump is used for sucking cleaning liquid and respectively injecting the cleaning liquid into the double channels to remove water scales so as to realize self cleaning.

Description

Anti-frosting efficient plate heat exchanger

Technical Field

The invention relates to the field of plate heat exchangers, in particular to an anti-frosting efficient plate heat exchanger.

Background

Under the current situation that energy supply is becoming tight and the requirement for environmental protection is increasing, people are continuously seeking an energy-saving and environment-friendly heat exchange mode, and a heat pump system is one of the energy-saving and environment-friendly heat exchange modes. Because the heat pump can realize the function of transmitting low-temperature heat energy to high-temperature heat energy, the heat in natural resources and waste heat resources can be greatly utilized, primary energy required by civil use and industry is effectively saved, and a heat pump system always needs to use a plate heat exchanger to realize heat exchange.

When the external temperature is low, if the air contains more moisture, the moisture in the air can be frosted on the surface of an external plate heat exchanger, when the heat exchanger needs to be used, the frosted heat exchanger is difficult to realize high-quality heat exchange in a short time, so that a heat pump air conditioning system cannot provide a heat exchange function quickly, and the use effect of the heat exchanger is reduced. Therefore, we disclose an anti-frosting high-efficiency plate heat exchanger to meet the heat exchange requirements.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an anti-frosting efficient plate heat exchanger which has the advantages of rapid defrosting and the like and solves the series problems that the mechanical type is difficult to defrost all around and the like.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-efficient plate heat exchanger who prevents frosting, includes body subassembly, detection mechanism, defrosting mechanism, thermal efficiency mechanism and scrubbing mechanism, the body subassembly contains fixed pressure strip, activity pressure strip, liquid pump and a plurality of even slab of installation, install the controller on the fixed pressure strip, the equal electric connection of controller and detection mechanism, thermal efficiency mechanism and liquid pump, defrosting mechanism is used for defrosting the plate heat exchanger surface, scrubbing mechanism is used for carrying out the incrustation scale to the heat exchanger is inside, the controller carries out the analysis to the result of detection mechanism and thermal efficiency mechanism, judges whether need trigger defrosting mechanism or scrubbing mechanism.

Preferably, detection mechanism contains moisture detector and first temperature sensor, through moisture detector and first temperature sensor detect a plurality ofly respectively the external environment's that the slab is located humidity and temperature, and transmit to in the controller, moisture detector and first temperature sensor all install on.

Preferably, the defrosting mechanism comprises a defrosting heat dissipation frame, a defrosting pipe and a circulation pipe, the defrosting heat dissipation frame is made of a heat conductive material, the plurality of plates are all located in the defrosting heat dissipation frame and contact with the inner wall of the defrosting heat dissipation frame, the top of the heat dissipation frame is fixedly connected with a rectangular frame, a through hole is formed in the rectangular frame, one end of the defrosting pipe penetrates through the through hole and extends into the rectangular frame, the fluid chamber is formed in the defrosting heat dissipation frame, two ends of the defrosting pipe are respectively and indirectly communicated with the fluid chamber and the output end of the liquid pump, high-temperature liquid flows in the fluid chamber and dissipates heat, a plurality of uniformly distributed and correspondingly positioned shunting holes are formed in the bottom side of the rectangular frame and the top side inner wall of the fluid chamber, the inner walls on two sides of the fluid chamber are fixedly connected with a same partition plate, and the plurality of shunting holes are respectively located on two sides of the partition plate, the input end and the output end of the liquid pump are respectively connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is provided with a second electromagnetic valve, a control valve of the second electromagnetic valve is positioned in the water inlet pipe and matched with the water inlet pipe, the other end of the water outlet pipe is in threaded connection with a second connecting pipe, and the circulating pipe is provided with a first one-way valve.

Preferably, a plurality of clamping studs distributed on two sides are arranged between the fixed pressing plate and the movable pressing plate, a plurality of connecting blocks sleeved on the clamping studs in a sliding mode are installed on the defrosting heat dissipation frame and used for fixing and quickly disassembling the defrosting heat dissipation frame, the two ends of each clamping stud penetrate through the defrosting heat dissipation frame and extend to one side of the defrosting heat dissipation frame respectively, and a plurality of clamping nuts are sleeved at the two ends of each clamping stud in a threaded mode.

Preferably, be equipped with high temperature interface, low temperature export and high temperature export on the fixed pressure strip, be connected with low temperature drain pipe and high temperature drain pipe on low temperature export and the high temperature export respectively, the other end of high temperature interface and low temperature interface is connected with hot water pipe, cold water pipe respectively, through above a plurality of interfaces and pipeline realize that the hot and cold water pours into and flows out, the other end of hot water pipe is connected on the second connecting pipe, be connected with the defrosting bleeder on the hot water pipe, the other end of defrosting bleeder with the defrosting pipe is linked together, be equipped with the second check valve on the cold water pipe, the fixed mounting panel that has cup jointed on the hot water pipe, be equipped with the fourth solenoid valve on the mounting panel, the control valve of fourth solenoid valve is located in the defrosting bleeder and rather than looks adaptation.

Preferably, thermal efficiency mechanism contains second temperature sensor and third temperature sensor, second temperature sensor and third temperature sensor are located high temperature drain pipe and high temperature interface respectively to in transmitting the liquid temperature wherein to the controller respectively, through controller analysis data, derive the heat exchange rate, the high temperature interface is used for connecting hot water input.

Preferably, be equipped with on the controller rather than electric connection's warning light, if the real-time heat exchange rate of heat exchanger is less than the setting value in the controller, the corresponding warning light lights, plays the suggestion effect, opens the liquid pump through the controller simultaneously and removes the incrustation scale, the warning light exists multiple display state.

Preferably, the descaling mechanism includes a descaling pipe and a descaling branch pipe, the movable pressing plate is provided with a descaling box communicated with the liquid pump through the descaling pipe, a descaling solution required for cleaning the heat exchanger pipeline is stored in the descaling box, the output end of the liquid pump is communicated with the high-temperature interface and the low-temperature interface through the hot water conduit and the descaling branch pipe respectively, the descaling pipe is provided with a first electromagnetic valve, a control valve of the first electromagnetic valve is located in the descaling pipe and adapted to the descaling pipe, the descaling branch pipe is provided with a third electromagnetic valve, a control valve of the third electromagnetic valve is located in the descaling branch pipe and adapted to the descaling branch pipe, one side of the descaling pipe is fixedly connected with a fixed block, and the descaling pipe sequentially penetrates through the two fixed blocks and is sleeved in the two fixed blocks.

Preferably, the equal threaded connection of one end of low temperature drain pipe and high temperature drain pipe has first connecting pipe, two all install in the first connecting pipe and be used for the incrustation scale to collect the filter plate of usefulness, above all be equipped with corresponding solenoid valve or check valve on a plurality of pipelines, realize the independent operation of multitube way passageway, two a plurality of filter pores that distribute evenly are all seted up on the filter plate for filter incrustation scale residue.

Preferably, the liquid pump and the controller, and the plurality of electromagnetic valves and the one-way valve are mutually matched to form a plurality of working modes, including a working mode, a defrosting mode and a decontamination mode, wherein different valve opening modes are correspondingly arranged in different modes.

(III) advantageous effects

Compared with the prior art, the invention provides an anti-frosting efficient plate heat exchanger, which has the following beneficial effects:

1. this prevent high-efficient plate heat exchanger that frosts through humidity detector and first temperature sensor, with the external environment humidity and the temperature datamation that the heat exchanger was located and transmit and carry out the analysis in the controller, if reach the highest humidity or the minimum temperature that set up in the controller, then start the defrosting mode and defrost, avoid the heat exchanger to expose and stop using for a long time outside and lead to the surface frosting, normal use when the influence heat exchanger cold start.

2. This prevent high-efficient plate heat exchanger of frosting, through controller control second solenoid valve, the fourth solenoid valve, the passageway is opened to fifth solenoid valve and first check valve, control first solenoid valve, third solenoid valve and second check valve close the passageway, make the liquid pump input end inhale high-temperature water and by the output indirect with partly high-temperature water drainage in the rectangle frame, through the effect of a plurality of diffluent holes that distribute evenly, high-temperature water for the defrosting trickles along the both sides inner wall of fluidchamber, and with the surface of heat conduction to a plurality of heat transfer slab, carry out "surrounding type" rapid heating-up defrosting to four sides of slab, rather than adopting mechanical type defrosting, the condition that the effect is poor and damage the slab easily appears.

3. This prevent high-efficient plate heat exchanger of frosting opens the passageway through controller control second solenoid valve, fifth solenoid valve and second check valve, and control first check valve, first solenoid valve, third solenoid valve and fourth solenoid valve are closed, and high temperature water gets into and flows by the low temperature drain pipe by the high temperature interface, and low temperature water gets into in the heat exchanger and flows by the high temperature drain pipe by the low temperature interface to realize the heat exchange through inside a plurality of heat transfer sheets.

4. This prevent high-efficient plate heat exchanger that frosts, through second temperature sensor and third temperature sensor's setting, transmit high temperature drain pipe and the intraoral liquid temperature of high temperature interface to the controller in respectively, through controller analysis data, reachs the heat exchange rate, if the heat exchange rate is less than the lower limit value of setting in the controller, then probably be that there is thicker incrustation scale in the inside of slab passageway, lead to heat exchange efficiency to reduce, then open the scrubbing mode and dredge the clearance, realize the self-cleaning function of heat exchanger.

5. This prevent high-efficient plate heat exchanger of frosting, control first solenoid valve respectively through the controller, fifth solenoid valve and first solenoid valve, the passageway is opened to the third solenoid valve timesharing differentiation, and close other surplus valves under the two kinds of circumstances respectively, thereby utilize the washing liquid suction of liquid pump with the descaling incasement and pour into the binary channels respectively in carry out the incrustation removal, thereby realize intelligent automatic clear incrustation scale, the practicality of device has been improved, if clear up the back, there is the lower condition of heat exchange rate still, then the condition that the dislocation and slab leak are taken place to the heat transfer slab probably appears, need in time to change the slab and maintain, realize the self-checking function of heat exchanger.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic perspective view of a heat exchanger body according to the present invention;

FIG. 4 is a schematic view of another perspective structure of the heat exchanger body of the present invention;

FIG. 5 is a perspective view of the defrost mechanism of the present invention;

FIG. 6 is a perspective view of the defrosting mechanism according to the present invention;

FIG. 7 is a schematic perspective view of the decontamination mechanism of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 6 in accordance with the present invention;

FIG. 9 is a schematic diagram of a method for determining a defrost mode and an operating mode according to the present invention;

FIG. 10 is a schematic diagram of a method for determining a decontamination mode and a working mode according to the present invention.

In the figure: 1. fixing the pressing plate; 2. a movable pressure strip; 3. a controller; 4. a humidity detector; 5. a first temperature sensor; 6. defrosting and heat dissipating frames; 7. connecting blocks; 8. clamping the stud; 9. a high-temperature interface; 10. a low temperature interface; 11. a low-temperature liquid outlet pipe; 12. a high-temperature liquid outlet pipe; 13. a first connecting pipe; 14. a liquid pump; 15. a water inlet pipe; 16. a second connecting pipe; 17. a defrosting branch pipe; 18. a rectangular frame; 19. a fluid chamber; 20. a partition plate; 21. a shunt hole; 22. a defrost pipe; 23. a circulation pipe; 24. a first check valve; 25. a second temperature sensor; 26. a third temperature sensor; 27. a cold water conduit; 28. a hot water conduit; 29. a descaling box; 30. a descaling pipe; 31. a first solenoid valve; 32. a second solenoid valve; 33. a branch pipe for descaling; 34. a third electromagnetic valve; 35. a second one-way valve; 36. a fourth solenoid valve; 37. a fixed block; 38. a warning light; 39. filtering the plate; 40. and a fifth solenoid valve.

Detailed Description

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.

As introduced by the background art, the shortcomings of the prior art are overcome, and in order to solve the technical problems, the application provides an anti-frosting efficient plate heat exchanger

In a typical embodiment of the present application, as shown in fig. 1 to 10, an anti-frosting efficient plate heat exchanger includes a body assembly, a detection mechanism, a defrosting mechanism, a thermal efficiency mechanism and a decontamination mechanism, the body assembly includes a fixed pressure plate 1, a movable pressure plate 2, a liquid pump 14 and a plurality of plates uniformly mounted, a controller 3 is mounted on the fixed pressure plate 1, the controller 3 is electrically connected to the detection mechanism, the thermal efficiency mechanism and the liquid pump 14, the results of the detection mechanism and the thermal efficiency mechanism are analyzed by the controller 3, whether the defrosting mechanism and the decontamination mechanism need to be triggered or not is respectively judged, and defrosting of the surface of the plate heat exchanger and descaling of the interior of the heat exchanger are respectively realized by the defrosting mechanism and the decontamination mechanism.

Further, in above-mentioned scheme, detection mechanism contains moisture detector 4 and first temperature sensor 5, detects the external environment's that a plurality of slab are located humidity and temperature respectively through moisture detector 4 and first temperature sensor 5 in transmitting to controller 3, moisture detector 4 and first temperature sensor 5 are all installed on fixed pressure strip 1, through moisture detector 4 and first temperature sensor 5's setting, with the external environment humidity and the temperature datamation that the heat exchanger is located, the controller 3 of being convenient for carries out the analysis.

Furthermore, in the above scheme, the defrosting mechanism comprises a defrosting heat dissipation frame 6, a defrosting pipe 22 and a circulating pipe 23, the defrosting heat dissipation frame 6 is made of a material easy to conduct heat, a plurality of plates are all positioned in the defrosting heat dissipation frame 6 and contact with the inner wall of the defrosting heat dissipation frame 6, the 'wrapped' quick defrosting is conveniently realized by the arrangement of the defrosting heat dissipation frame 6, the top of the defrosting heat dissipation frame 6 is fixedly connected with a rectangular frame 18, a through hole is formed on the rectangular frame 18, one end of the defrosting pipe 22 penetrates through the through hole and extends into the rectangular frame 18, a fluid cavity 19 is formed in the defrosting heat dissipation frame 6, two ends of the defrosting pipe 22 are respectively and indirectly communicated with the fluid cavity 19 and the output end of the liquid pump 14, the high-temperature liquid flows in the fluid cavity 19 and dissipates heat, a plurality of uniformly distributed and correspondingly positioned shunt holes 21 are respectively formed on the bottom side of the rectangular frame 18 and the top side inner wall of the fluid cavity 19, and the same partition plates 20 are fixedly connected on the two side inner walls of the fluid cavity 19, the plurality of shunting holes 21 are respectively positioned at two sides of the partition plate 20, the input end and the output end of the liquid pump 14 are respectively connected with a water inlet pipe 15 and a water outlet pipe, a second electromagnetic valve 32 is arranged on the water inlet pipe 15, a control valve of the second electromagnetic valve 32 is positioned in the water inlet pipe 15 and is matched with the water inlet pipe, the other end of the water outlet pipe is in threaded connection with a second connecting pipe 16, a first one-way valve 24 is arranged on the circulating pipe 23, through the arrangement of the first one-way valve 24, under a normal working mode, high-temperature liquid cannot be reversely injected into the fluid cavity 19, and the backflow phenomenon is avoided.

Further, in the above scheme, be equipped with a plurality of tight double-screw bolts 8 of clamp that both sides distribute between fixed pressure strip 1 and the activity pressure strip 2, install a plurality of slip cup joints connecting block 7 on pressing from both sides tight double-screw bolt 8 on the defrosting heat dissipation frame 6, for fixed and quick assembly disassembly defrosting heat dissipation frame 6, the both ends of a plurality of tight double-screw bolts 8 run through fixed pressure strip 1 and activity pressure strip 2 respectively and extend to outside one side of fixed pressure strip 1 and activity pressure strip 2 respectively, the equal screw thread in both ends of a plurality of tight double-screw bolts 8 has cup jointed clamping nut, through the setting of pressing from both sides tight double-screw bolt 8 and clamping nut, make things convenient for a plurality of heat transfer slab of dismouting.

Further, in the above scheme, the fixed pressing plate 1 is provided with a high temperature port 9, a low temperature port 10, a low temperature outlet and a high temperature outlet, the low temperature outlet and the high temperature outlet are respectively connected with a low temperature liquid outlet pipe 11 and a high temperature liquid outlet pipe 12, the other ends of the high temperature port 9 and the low temperature port 10 are respectively connected with a hot water conduit 28 and a cold water conduit 27, hot and cold water is injected and flowed out through the above plurality of ports and pipes, the other end of the hot water conduit 28 is connected with a second connecting pipe 16, the hot water conduit 28 is connected with a defrosting branch pipe 17, the other end of the defrosting branch pipe 17 is communicated with the defrosting pipe 22, the cold water conduit 27 is provided with a second check valve 35, the hot water conduit 28 is fixedly sleeved with a mounting plate, the mounting plate is provided with a fourth solenoid valve 36, a control valve of the fourth solenoid valve 36 is located in the defrosting branch pipe 17 and is matched with the defrosting branch pipe 17, through the arrangement of the second check valve 35, so that when the liquid pump 14 removes scale from the cold water conduit 27, the cleaning solution is not directly discharged from the cold water conduit 27 without passing through the inside of the heat exchanger.

Furthermore, in the above scheme, the thermal efficiency mechanism includes a second temperature sensor 25 and a third temperature sensor 26, the second temperature sensor 25 and the third temperature sensor 26 are respectively located in the high temperature liquid outlet pipe 12 and the high temperature interface 9, and respectively transmit the liquid temperature therein to the controller 3, the data is analyzed by the controller 3 to obtain the heat exchange rate, the high temperature interface 9 is used for connecting hot water input, and after the controller 3 analyzes the heat exchange rate, it is determined whether the descaling needs to be performed inside the heat exchanger.

Further, in the above scheme, the controller 3 is provided with the indicator light 38 electrically connected thereto, if the real-time heat exchange rate of the heat exchanger is lower than the set value in the controller 3, the corresponding indicator light 38 lights up to play a role in prompting, and meanwhile, the controller 3 starts the liquid pump 14 to remove scale, the indicator light 38 has multiple display states, if the scale is removed from the inside of the heat exchanger, the heat exchange rate is still not high, the indicator light 38 sends out corresponding information to prompt that the condition of plate position deviation or plate leakage possibly exists, and maintenance is needed in time.

Further, in the above scheme, the descaling mechanism comprises a descaling pipe 30 and a descaling branch pipe 33, the movable pressing plate 2 is provided with a descaling box 29 communicated with the liquid pump 14 through the descaling pipe 30, a descaling solution required for cleaning the heat exchanger pipeline is stored in the descaling box 29, the output end of the liquid pump 14 is communicated with the high temperature interface 9 and the low temperature interface 10 through a hot water conduit 28 and the descaling branch pipe 33 respectively, the descaling pipe 30 is provided with a first electromagnetic valve 31, a control valve of the first electromagnetic valve 31 is positioned in the descaling pipe 30 and adapted thereto, the descaling branch pipe 33 is provided with a third electromagnetic valve 34, a control valve of the third electromagnetic valve 34 is positioned in the descaling branch pipe 33 and adapted thereto, one side of the fixed pressing plate 1 and one side of the movable pressing plate 2 are both fixedly connected with the fixed blocks 37, the descaling pipe 30 sequentially penetrates through the two fixed blocks 37 and is sleeved in the two fixed blocks 37, through the arrangement of the fixing block 37, the long descaling pipe 30 and the descaling pipe 30 can be conveniently fixed, and the liquid pump 14 can conveniently suck the special cleaning liquid in the descaling box 29 and discharge the special cleaning liquid into the heat exchanger for descaling.

Further, in above-mentioned scheme, the equal threaded connection of one end of low temperature drain pipe 11 and high temperature drain pipe 12 has first connecting pipe 13, all install the filter plate 39 that is used for the incrustation scale to collect the usefulness in two first connecting pipes 13, all be equipped with corresponding solenoid valve or check valve on a plurality of pipelines above, realize the independent operation of multitube way passageway, a plurality of even filtration pores of distributing have all been seted up on two filter plates 39, be used for filtering the incrustation scale residue, setting through threaded connection, be convenient for take off first connecting pipe 13 and clear up the maintenance, avoid long-time use to cause the inside jam of first connecting pipe 13.

Further, in the above scheme, the liquid pump 14 and the controller 3, and the plurality of electromagnetic valves and the check valves are mutually matched to form a plurality of working modes, which are a working mode, a defrosting mode and a decontamination mode, wherein different valve opening modes are provided correspondingly in different modes, and by mutual adjustment in multiple modes, the utilization rate of the liquid pump 14 is improved, and the service life of the heat exchanger is also prolonged.

The working principle is as follows: when the defrosting device is used, the humidity detector 4 and the first temperature sensor 5 are used for digitizing the humidity and the temperature of the external environment where the heat exchanger is located and transmitting the digitized data to the controller 3 for analysis, and if the highest humidity or the lowest temperature set in the controller 3 is reached, the defrosting mode is started for defrosting, so that the heat exchanger is prevented from being exposed outside for a long time and being stopped to frost the surface, and the normal use of the heat exchanger is prevented from being influenced.

After the defrosting mode is started, the controller 3 controls the second electromagnetic valve 32, the fourth electromagnetic valve 36, the fifth electromagnetic valve 40 and the first one-way valve 24 to open the channel, and controls the first electromagnetic valve 31, the third electromagnetic valve 34 and the second one-way valve 35 to close the channel, so that the input end of the liquid pump 14 sucks high-temperature water and indirectly discharges a part of the high-temperature water into the rectangular frame 18 through the output end, the high-temperature water for defrosting flows along the inner walls of the two sides of the fluid cavity 19 under the action of the uniformly distributed multiple diversion holes 21, and heat is transferred to the surfaces of multiple heat exchange plates, so that the four sides of the plates are subjected to 'surrounding' rapid heating defrosting, and the conditions that the mechanical defrosting effect is poor and the plates are easily damaged are avoided.

If defrosting is not needed, the working mode is started, the controller 3 controls the second electromagnetic valve 32, the fifth electromagnetic valve 40 and the second one-way valve 35 to open the channel, controls the first one-way valve 24, the first electromagnetic valve 31, the third electromagnetic valve 34 and the fourth electromagnetic valve 36 to close, high-temperature water enters from the high-temperature interface 9 and flows out from the low-temperature liquid outlet pipe 11, low-temperature water enters from the low-temperature interface 10 into the heat exchanger and flows out from the high-temperature liquid outlet pipe 12, and therefore heat exchange is completed.

Through second temperature sensor 25 and third temperature sensor 26's setting, transmit the liquid temperature in high temperature drain pipe 12 and the high temperature interface 9 to controller 3 in respectively, through 3 analytic data of controller, reachs the heat exchange rate, if the heat exchange rate is less than the lower limit value of setting for in the controller 3, then probably be that the inside thick incrustation scale that exists of slab passageway leads to heat exchange efficiency to reduce, then opens the scrubbing mode and dredge the clearance.

After the decontamination mode is started, the controller 3 respectively controls the first electromagnetic valve 31, the fifth electromagnetic valve 40 and the first electromagnetic valve 31, the third electromagnetic valve 34 divides the time period into the open channels, and respectively closes other residual valves under two conditions, thereby utilizing the liquid pump 14 to suck the cleaning liquid in the decontamination box 29 and respectively inject the cleaning liquid into the two channels for scale removal, thereby realizing the purpose of intelligent automatic cleaning, the practicability of the device is improved, if the cleaning is carried out, the condition that the heat exchange rate is lower still exists, the conditions that the heat exchange plates are misplaced and the plates are leaked possibly occur, and the prompting lamp 38 sends out corresponding information to prompt maintenance.

Through setting up filter plate 39 for the incrustation scale after the scrubbing mode is opened is collected, through threaded connection's mode, take off first connecting pipe 13 after the convenient to use a period and clear up the maintenance, avoids long-time the use to cause the inside jam of first connecting pipe 13, influences the normal use of heat exchanger.

Through setting up corresponding trigger mechanism for above interconversion between the multimode has both improved liquid pump 14's utilization ratio, also makes traditional heat exchanger possess practical function such as defrosting, scale removal, has improved the life of heat exchanger.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent high-efficient plate heat exchanger of frosting, includes body subassembly, detection mechanism, defrosting mechanism, thermal efficiency mechanism and scrubbing mechanism, its characterized in that: the body subassembly contains fixed pressure strip (1), activity pressure strip (2), liquid pump (14) and a plurality of even slab of installation, install controller (3) on fixed pressure strip (1), controller (3) and detection mechanism, thermal efficiency mechanism and the equal electric connection of liquid pump (14), defrosting mechanism is used for defrosting the plate heat exchanger surface, scrubbing mechanism is used for carrying out the descale to heat exchanger inside, controller (3) carry out the analysis to the result of detection mechanism and thermal efficiency mechanism, judge whether need trigger defrosting mechanism or scrubbing mechanism.

2. The anti-frosting high-efficiency plate heat exchanger according to claim 1, characterized in that: detection mechanism contains moisture detector (4) and first temperature sensor (5), through controller (3) and moisture detector (4) detect a plurality ofly respectively the external environment's that the slab is located humidity and temperature, and transmit to in controller (3).

3. The anti-frosting high-efficiency plate heat exchanger according to claim 2, characterized in that: defrosting mechanism contains defrosting heat dissipation frame (6), defrosting pipe (22) and circulating pipe (23), defrosting heat dissipation frame (6) are easy heat conduction material, and are a plurality of the slab all is located in defrosting heat dissipation frame (6) and contact rather than the inner wall, it has seted up to defrost heat dissipation frame (6) fluid chamber (19), the both ends of defrosting pipe (22) communicate with the output of fluid chamber (19) and liquid pump (14) is indirect respectively, and high temperature liquid is in flow and heat dissipation in fluid chamber (19).

4. An anti-frosting high-efficiency plate heat exchanger according to claim 3, characterized in that: a plurality of clamping studs (8) distributed on two sides are arranged between the fixed pressing plate (1) and the movable pressing plate (2), and a plurality of connecting blocks (7) sleeved on the clamping studs (8) are installed on the defrosting heat dissipation frame (6) and used for fixing and quickly disassembling the defrosting heat dissipation frame (6).

5. The anti-frosting high-efficiency plate heat exchanger according to claim 4, wherein: be equipped with high temperature interface (9), low temperature interface (10), low temperature export and high temperature export on fixed pressure strip (1), be connected with low temperature drain pipe (11) and high temperature drain pipe (12) on low temperature export and the high temperature export respectively, the other end of high temperature interface (9) and low temperature interface (10) is connected with hot water pipe (28), cold water pipe (27) respectively, through above a plurality of interfaces and pipeline realize that the hot and cold water pours into and flows out.

6. The anti-frosting high-efficiency plate heat exchanger according to claim 5, characterized in that: the thermal efficiency mechanism comprises a second temperature sensor (25) and a third temperature sensor (26), wherein the second temperature sensor (25) and the third temperature sensor (26) are respectively positioned in a high-temperature liquid outlet pipe (12) and a high-temperature interface (9), liquid temperature in the high-temperature liquid outlet pipe and the high-temperature interface is respectively transmitted into a controller (3), and data are analyzed through the controller (3) to obtain the heat exchange rate.

7. The anti-frosting high-efficiency plate heat exchanger according to claim 6, characterized in that: the controller (3) is provided with a prompting lamp (38) electrically connected with the controller, if the real-time heat exchange rate of the heat exchanger is lower than a set value in the controller (3), the corresponding prompting lamp (38) is turned on to play a prompting role, and meanwhile, the liquid pump (14) is started through the controller (3) to remove scale.

8. The anti-frosting high-efficiency plate heat exchanger according to claim 7, wherein: the descaling mechanism comprises a descaling pipe (30) and a descaling branch pipe (33), a descaling box (29) communicated with the liquid pump (14) through the descaling pipe (30) is installed on the movable pressing plate (2), a descaling solution required for cleaning the heat exchanger pipeline is stored in the descaling box (29), and the output end of the liquid pump (14) is communicated with the high-temperature interface (9) and the low-temperature interface (10) through a hot water conduit (28) and the descaling branch pipe (33) respectively.

9. The anti-frosting high-efficiency plate heat exchanger according to claim 5, characterized in that: the equal threaded connection of one end of low temperature drain pipe (11) and high temperature drain pipe (12) has first connecting pipe (13), two all install in first connecting pipe (13) and be used for the incrustation scale to collect filter plate (39) of usefulness, above all be equipped with corresponding solenoid valve or check valve on a plurality of pipelines, realize the independent operation of multichannel passageway.

10. The anti-frosting high-efficiency plate heat exchanger according to claim 1, characterized in that: the liquid pump (14), the controller (3), the electromagnetic valves and the one-way valves are matched with one another to form multiple working modes, including a working mode, a defrosting mode and a decontamination mode.