CN206583321U - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- CN206583321U CN206583321U CN201720152656.4U CN201720152656U CN206583321U CN 206583321 U CN206583321 U CN 206583321U CN 201720152656 U CN201720152656 U CN 201720152656U CN 206583321 U CN206583321 U CN 206583321U
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- heat exchanger
- temperature
- measured value
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- 239000007788 liquid Substances 0.000 claims abstract description 92
- 230000009471 action Effects 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 abstract description 21
- 238000001816 cooling Methods 0.000 description 61
- 238000010586 diagram Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model, which is provided, can make the outlet temperature of liquid converge to the heat exchanger of target temperature rapidly.Heat exchanger possesses：Heat exchanger body (3), it carries out heat exchange between liquid-to-air；Ingress pipe (10), liquid is directed into heat exchanger body (3) by it；Drainpipe (11), it discharges liquid from heat exchanger body (3)；Inlet temperature sensor (13), it is measured to the temperature of liquid that is, inlet temperature that are flowed in ingress pipe (10)；Outlet temperature sensor (19), it is measured to the temperature of liquid that is, outlet temperature that are flowed in drainpipe (11)；Fan (5), it is used to direct the air into heat exchanger body (3)；Motor (7), it rotates fan (5)；Frequency converter (8), it can make motor (7) speed change；Control unit (51), the measured value of its measured value and outlet temperature based on inlet temperature controls the action of motor (7) via frequency converter (8).
Description
Technical field
The utility model is related to heat exchanger, the more particularly to air-cooled type such as cooling tower or radiator or water-cooled
Heat exchanger.
Background technology
In the past, in order to be cooled down to the liquid used in air-conditioning equipment, factory etc. (such as cooling water), and cooling is used
The heat exchanger such as tower or radiator.Such heat exchanger has：Heat exchanger body, liquid is directed into the heat exchanger
The ingress pipe of main body, from heat exchanger body discharge liquid drainpipe and for directing outside air into heat exchanger
The fan assembly of the inside of main body.Fan assembly has motor and the fan with the rotary shaft link of the motor, utilizes motor
Rotate fan, thus the inside of heat exchanger main body imports air.The liquid of heat exchanger body is imported into from ingress pipe,
By being cooled with importeding into the air progress heat exchange of the heat exchanger body.Cooled liquid is from heat exchanger body
It is discharged by drainpipe.
Heat exchanger generally has：The temperature being measured to the temperature of liquid that is, outlet temperature that are flowed in drainpipe
Sensor and based on outlet temperature measured value control motor action control unit.Control unit, which is contained in separate with motor, matches somebody with somebody
The control panel put.In addition, the stopping temperature that control unit storage makes the start-up temperature of motor starting and stops motor.Control unit
Start the operating of motor when the measured value of outlet temperature is higher than start-up temperature, turn into the measured value of outlet temperature and stop temperature
Stop the operating of motor when following.
Fig. 9 (a) is existing heat exchanger, is represent the measured value of the outlet temperature of change with time process one
The figure of individual example, Fig. 9 (b) be represent the measured value with the outlet temperature shown in Fig. 9 (a) change and controlled motor
The figure of one example of action.As shown in Fig. 9 (a) and Fig. 9 (b), control unit is higher than motor in the measured value of outlet temperature
Start-up temperature that is, at 33 DEG C (moment X), starter motor rotates fan, turns into the measured value of outlet temperature and stops temperature also
At i.e. less than 31 DEG C (moment Y), stop motor.Measured value of the control unit based on outlet temperature controls the startup of motor and stopped
Only, the outlet temperature of liquid is thus made to converge to target temperature that is, 32 DEG C.
Patent document 1：Japanese Unexamined Patent Application Publication 2011-517758 publications
The measured value of outlet temperature of the existing heat exchanger based on liquid, controls the startup and stopping of motor.So
Heat exchanger liquid cooling machinery (such as boiler, refrigerator or air conditioner) load increase, so as to imported into
In the case of the inlet temperature of the liquid of heat exchanger is drastically elevated, it is impossible to the outlet temperature of heat exchanger is converged to mesh rapidly
Mark temperature.That is, in existing heat exchanger, the outlet temperature that there is the liquid for making to discharge from heat exchanger converges to target temperature
The problem of temperature control of degree postpones.
Patent document 1 records the heat exchanger for possessing fan assembly, and the fan assembly, which has, can make motor speed varying
Frequency converter.Frequency converter is controlled by control unit, thus frequency converter can be such that motor is rotated with expected rotary speed, therefore easily
The outlet temperature of liquid is set to converge to target temperature.However, controlling the rotary speed of motor even with frequency converter, temperature is eliminated
The delay of control is spent, there is also the limit.
In addition, in existing heat exchanger, control unit is contained in the control panel with motor configured separate, it is therefore desirable to
Prepare single control panel, in addition, the wiring between motor and control unit is elongated.The manufacturing cost liter of its result heat exchanger
It is high.And then if the wiring between motor and control unit is elongated, the increase such as electrical noise, so as to control unit and peripheral equipment
Bring harmful effect.
Utility model content
Therefore, the utility model, which is provided, can make the outlet temperature of liquid converge to the heat exchanger of target temperature rapidly.
A mode of the present utility model is a kind of heat exchanger, it is characterised in that possessed：Heat exchanger body, its
Heat exchange is carried out between liquid-to-air；Ingress pipe, liquid is directed into the heat exchanger body by it；Drainpipe, it is from institute
State heat exchanger body discharge liquid；Inlet temperature sensor, it is to the temperature of liquid that is flowed in the ingress pipe that is, enters
Mouth temperature is measured；Outlet temperature sensor, it enters to the temperature of liquid that is, outlet temperature that are flowed in the drainpipe
Row is determined；Fan, it is used to direct the air into the heat exchanger body；Motor, it rotates the fan；Frequency converter,
It can make the motor speed varying；And control unit, its measured value based on the inlet temperature and the outlet temperature
Measured value, is controlled via the frequency converter to the action of the motor.
Preferred embodiment of the present utility model is characterised by that the motor, the frequency converter and the control unit are housed
In in same motor box.
According to the utility model, the measured value of inlet temperature of the control unit based on the liquid for being directed into heat exchanger and from
The measured value both sides of the outlet temperature of the liquid of heat exchanger discharge, control the action of motor.Therefore control unit can be according to liquid
The change of the change of the inlet temperature of body, the in advance outlet temperature of prediction liquid, so as to control the action of motor.Its result can
The outlet temperature of liquid is set to converge to target temperature rapidly.
Brief description of the drawings
Fig. 1 is the schematic diagram of an embodiment of the cooling tower for being denoted as heat exchanger.
Fig. 2 is the schematic diagram of the other embodiment for the cooling tower for being denoted as heat exchanger.
Fig. 3 (a) is the schematic diagram of an embodiment of the radiator for being denoted as heat exchanger, and Fig. 3 (b) is to represent
The schematic diagram of the sinuous cooling tube in the inner space of framework shown in Fig. 3 (a).
Fig. 4 is the sectional view of the fan assembly of an embodiment.
Fig. 5 (a) is to represent the input of an embodiment to the measured value and outlet temperature of the inlet temperature of control unit
The figure of one example of the change of measured value, Fig. 5 (b) is measured value and the outlet for representing the inlet temperature according to Fig. 5 (a)
The change of the measured value of temperature and the curve map of the action of motor controlled.
Fig. 6 is the measured value based on the outlet temperature shown in Fig. 5 (a), the feedback that the rotary speed to motor is controlled
The block diagram of control.
Fig. 7 (a) is to represent the input of other embodiment to the measured value and outlet temperature of the inlet temperature of control unit
The figure of one example of the change of measured value, Fig. 7 (b) is measured value and the outlet for representing the inlet temperature according to Fig. 7 (a)
The change of the measured value of temperature and the curve map of the action of motor controlled.
Fig. 8 is measured value and the measured value of outlet temperature based on the inlet temperature shown in Fig. 7 (a), the action to motor
The block diagram for the feedback control being controlled.
Fig. 9 (a) is represent over time to be passed through and changed with existing heat exchanger the one of the measured value of outlet temperature
The curve map of individual example, Fig. 9 (b) is the motor for representing to control with the change of the measured value of the outlet temperature shown in Fig. 9 (a)
Action an example figure.
Description of reference numerals：1 ... fan assembly；2 ... packing materials；3 ... cooling tower main bodys；5 ... fans；6 ... rotary shafts；
7 ... motors；8 ... frequency converters；10 ... ingress pipes；11 ... drainpipes；12 ... tanks；13 ... inlet temperature sensors；14 ... blades；
15 ... wind deflectors；16 ... wheel hubs；17 ... motor box；18 ... fan cases；19 ... outlet temperature sensors；20 ... helix tubes；22…
Sprinkler pipe；23rd, 24 ... signal cables；25 ... watering drainpipes；27 ... motor chambers；28 ... Transducer Rooms；29 ... next doors；30 ... is cold
But manage；32 ... radiator bodies；33 ... frameworks；35 ... upside bearings；36 ... lower side bearings；40 ... lids；41 ... permanent magnets；
42 ... feed cables；43 ... rotors；44 ... stators；46 ... motor cables；50 ... dynamical elements；51 ... control units.
Embodiment
Hereinafter, embodiment of the present utility model is illustrated referring to the drawings.
Fig. 1 is the schematic diagram of an embodiment of the cooling tower for being denoted as heat exchanger.Cooling tower tool shown in Fig. 1
It is standby：Cooling tower main body (heat exchanger body) 3, be configured at cooling tower main body 3 inside packing material 2 and be installed on cold
But the fan assembly 1 on the top of tower main body 3.Described behind the detailed construction of fan assembly 1.If making to fill in fan by motor 7
The fan 5 for putting configuration in 1 fan case 18 rotates, then air passes through the quilt of wind deflector 15 for the side for being arranged on cooling tower main body 3
It is directed into cooling tower main body 3.The air for importeding into cooling tower main body 3 is discharged by fan assembly 1 from cooling tower.
The ingress pipe 10 that cooling tower has insertion cooling tower main body 3 and extended, liquid (such as cooling water) passes through the importing
Pipe 10 and imported into cooling tower main body 3.The temperature of liquid to being flowed in the ingress pipe 10 is installed in ingress pipe 10 that is, entered
The inlet temperature sensor 13 that mouth temperature is measured.The row positioned at the top of packing material 2 is formed with the end of ingress pipe 10
10a is exported, liquid is discharged from outlet 10a to packing material 2.The liquid of packing material 2 is discharged in packing material 2
Inside flows down, and with importeding into the air contact of cooling tower main body 3 by fan assembly 1.Thus between liquid-to-air
Heat exchange is carried out, carrys out cooling liquid.
The liquid of cooling is pooled to the tank 12 in the bottom setting of cooling tower main body 3, and from being connected with the tank 12
Drainpipe 11 is discharged to the outside of cooling tower main body 3.The temperature of the liquid to being flowed in the drainpipe 11 is installed in drainpipe 11
The outlet temperature sensor 19 that degree that is, outlet temperature are measured.Cooling tower shown in Fig. 1 is by the direct coolant of air
The water-cooled heat exchanger of body, is referred to as opening cooling tower.
Fig. 2 is the schematic diagram of the other embodiment for the cooling tower for being denoted as heat exchanger.This not specified reality
Apply that the structure of mode is identical with the structure of the cooling tower shown in Fig. 1, therefore omit its explanation repeated.
One end of helix tube 20 of the ingress pipe 10 of cooling tower shown in Fig. 2 with being configured in the inside of cooling tower main body 3 connects
Connect, the drainpipe 11 that liquid is discharged from cooling tower main body 3 is connected with the other end of helix tube 20.In the present embodiment,
It is that the inlet temperature sensor 13 that is measured to the inlet temperature of liquid is installed in ingress pipe 10, is installed in drainpipe 11 to liquid
The outlet temperature sensor 19 that the outlet temperature of body is measured.
Liquid flows into helix tube 20 from ingress pipe 10, and is flowed out from helix tube 20 to drainpipe 11.In addition, in the cooling tower
With the sprinkler pipe 22 for water to be spread to helix tube 20.Sprinkler pipe 22 extends to the upper of helix tube 20 from the outside of cooling tower
Side, the watering mouthful 22a for spreading water is formed with the end of sprinkler pipe 22.Pass through from the watering mouth 22a of sprinkler pipe 22 water spread
Contacted with the surface of helix tube 20, thus the liquid progress heat exchange with being flowed in the helix tube 20.Thus flowed in helix tube 20
Dynamic liquid is cooled.
The air that cooling tower main body 3 is imported into by fan assembly 1 from the watering mouth 22a of sprinkler pipe 22 water spread is cold
But.The water for contacting and flowing down with helix tube 20 comes together in tank 12, and from the watering drainpipe 25 being connected with the tank 12 to
The outside discharge of cooling tower.Cooling tower shown in Fig. 2 is the water cooling that the liquid flowed in helix tube 20 is spread from sprinkler pipe 22
But water-cooled heat exchanger, is referred to as hermetic type cooling tower.
Fig. 3 (a) is the schematic diagram of an embodiment of the radiator for being denoted as heat exchanger, and Fig. 3 (b) is to represent
The schematic diagram of the sinuous cooling tube in the inner space of framework shown in Fig. 3 (a).Radiator shown in Fig. 3 (a) possesses：Radiator
Main body (heat exchanger body) 32, the framework 33 and fan assembly 1 for being provided with the cooling tube 30 flowed for liquid.
As shown in Fig. 3 (b), one end of cooling tube 30 is connected with liquid to be directed into the ingress pipe 10 of radiator body 32,
The other end of cooling tube 30 is connected with discharging the drainpipe 11 of liquid from radiator body 32.In the present embodiment, be also
Ingress pipe 10 installs the inlet temperature sensor 13 being measured to the inlet temperature of liquid, is installed in drainpipe 11 to liquid
The outlet temperature sensor 19 that outlet temperature is measured.Cooling tube 30 is with the straight sections 30a of the cooling tube 30 along vertical direction
The mode of extension is wriggled in the inner space of framework 33.Cooling tube 30 can also be with the straight sections 30a of the cooling tube 30 along level
The mode of direction extension, wriggles in the inner space of framework 33.Framework 33 is embedded in what is formed in the side of radiator body 32
Opening, so as to be fixed on radiator body 32.Although not shown, but the framework 33 of cooling tube 30 is installed, can also be embedded in
The upper surface of radiator body 32 or the opening of lower surface formation.
If the fan 5 for making fan assembly 1 by motor 7 rotates, air between sinuous cooling tube 30 by forming
Gap, be fed to radiator body 32.Fin (not shown) is usually mounted with cooling tube 30, is flowed in cooling tube 30
The heat of liquid transmitted to fin.The liquid flowed in the cooling tube 30 of radiator, via cooling tube 30 and fin,
With the air progress heat exchange being imported into by fan assembly 1 inside radiator body 32.Thus the liquid flowed in cooling tube 30
Body is cooled.Radiator shown in Fig. 3 (a) is the liquid in the flowing of cooling tube 30 by the heat exchange of air cooled air-cooled type
Device.
Fig. 4 is the sectional view of the fan assembly 1 of an embodiment.The diagram of fan case 18 is omitted in Fig. 4.The fan
Device 1 is arranged at the heat exchangers such as the radiator shown in cooling tower or Fig. 3 (a) shown in Fig. 1 or Fig. 2.Fan assembly 1 has
It is standby：Fan 5, make the fan 5 rotate motor 7 and the frequency converter 8 of the speed change of motor 7 can be made.Fan 5 has：The He of wheel hub 16
From the wheel hub 16 with multiple blades 14 of radiated entends.By the rotary shaft 6 that the wheel hub 16 of fan 5 is fixed on to motor 7
End, is thus directly linked to motor 7 by fan 5.
Fan assembly 1 shown in Fig. 4 has the motor box 17 for housing motor 7 and frequency converter 8, thus frequency converter 8 and horse
It is unitized up to 7.In the present embodiment, motor box 17 has drum.The inside of motor box 17 is divided into by next door 29
Motor chamber 27 and Transducer Room 28, Transducer Room 28 are located at the upside of motor chamber 27.Motor 7 is contained in the inside of motor box 17
The motor chamber 27 of formation, frequency converter 8 is contained in the Transducer Room 28 being internally formed in motor box 17.The upper wall of motor box 17 by
The lid 40 that can be removed is constituted.Lid 40 constitutes the top of Transducer Room 28.
Feed cable hole 17a is formed with the side wall 17b of motor box 17, electricity is supplied from power supply (not shown) to frequency converter 8
The feed cable 42 of power extends through the feed cable hole 17a.Next door 29 is formed with motor cable hole 29a, from frequency converter 8
Extend to the motor cable 46 of the supply electric power of motor 7 through the motor cable hole 29a.
The control unit 51 being connected with frequency converter 8 is configured with Transducer Room 28.In the present embodiment, control unit 51 is configured
On frequency conversion substrate 8a, frequency conversion substrate 8a is configured with the dynamical element (switch element such as IGBT) 50 for constituting frequency converter 8
Deng.In one embodiment, control unit 51 can also be configured to leave from frequency converter 8.Frequency conversion is controlled by control unit 51
The switch motion of the dynamical element 50 of device 8, so as to control the rotary speed i.e. rotary speed of fan 5 of motor 7.In addition, by entering
The measured value of the inlet temperature for the liquid that mouth temperature sensor 13 is determined, is inputted to control unit 51 via signal cable 23,
The measured value of the outlet temperature of the liquid determined by outlet temperature sensor 19, is inputted to control unit via signal cable 24
51.In Fig. 4, inlet temperature sensor 13, outlet temperature sensor 19 and imaginary line (dotted line) table of signal cable 23,24
Show.The measured value of the inlet temperature of the liquid determined by inlet temperature sensor 13 and surveyed by outlet temperature sensor 19
The measured value of the outlet temperature for the liquid made, can also use radio communication and input to control unit 51.In this case, save
Omit signal cable 23,24.
So, motor 7, frequency converter 8 and control unit 51 are contained in same motor box 17 and are unitized.Therefore without single
Solely preparation contains the control panel of control unit 51, is furthermore possible to make the wiring between motor 7 and control unit 51 to shorten.Its result
The manufacturing cost of heat exchanger can be reduced, and can reduce what electrical noise etc. was brought to control unit 51 and peripheral equipment
Harmful effect.
In the above-described embodiment, the wind of same motor box 17 is contained in motor 7, frequency converter 8 and control unit 51
Fan device 1 is illustrated, but in one embodiment, can also set the control for housing frequency converter 8 and control unit 51
Panel, and the control panel is installed on to the side of heat exchanger body 3,32.Or control panel can also be configured at
Positioned away from from heat exchanger body 3,32.In addition in one embodiment, frequency converter 8 can also be installed on motor box
17 side wall 17b, on the other hand, the control panel for housing control unit 51 is arranged at the side of heat exchanger body 3,32, or
Person is arranged at from heat exchanger body 3,32 and positioned away from.
Motor 7 can also be induction conductivity, but motor 7 be preferably with the rotor for being configured with permanent magnet and with this turn
PM motors (the Permanent Magnet Motor of son stator arranged opposite：Permanent magnet motor).As shown in figure 4, motor 7 is special
IPM motor (the Interior Permanent Magnet of permanent magnet 41 are preferably configured with the inside of rotor 43
Motor：Inner permanent magnetic motor).Because PM motors (particularly IPM motor) have high efficiency, therefore, it is possible to which motor 7 is small-sized
Change.
Rotor 43 is fixed on rotary shaft 6, and stator 44 is fixed on the inner surface of motor box 17.Motor 7 shown in Fig. 4 is stator
44 are configured at the radial gap type motor of the radial outside of rotor 43.Although not shown, but motor 7 can also be stator and rotor edge
The axial-gap motor of axially arrangement.
The rotary shaft 6 of motor 7 shown in Fig. 4 is by the supporting of two bearings 35,36 along vertical direction configured separate can
Rotation.Upside bearing 35 is installed on the lower surface (that is, the upper surface of motor chamber 27) in next door 29, and lower side bearing 36 is installed on motor
The lower surface of room 27.
In the heat exchanger of above-mentioned embodiment, control unit 51 is based on the liquid determined by inlet temperature sensor 13
The measured value of the measured value of the inlet temperature of body and the outlet temperature of the liquid determined by outlet temperature sensor 19 is double
Side, the action of motor 7 is controlled via frequency converter 8.Control unit 51 can detect liquid according to the change of the measured value of inlet temperature
The situation that the load of the machinery (such as boiler, refrigerator or air conditioner) of body cooling changes.For example, the energy of control unit 51
The increase of enough measured values according to inlet temperature, detects the increased situation of load of the equipment of liquid cooling.In addition, control unit
51 can detect the situation of the load reduction of the equipment of liquid cooling according to the reduction of the measured value of inlet temperature.Therefore control
Portion 51 processed can predict the change of the outlet temperature of liquid in advance according to the change of the measured value of the inlet temperature of liquid, to motor
7 action is controlled.As a result, the measured value of outlet temperature of the heat exchanger of present embodiment with being based only upon liquid is to horse
The existing heat exchanger that is controlled of action up to 7 is compared, and the outlet temperature of liquid can be made to converge on target temperature rapidly
Degree.Hereinafter, the action of motor is controlled to the measured value both sides of measured value of the control unit 51 based on inlet temperature and outlet temperature
Specific example illustrate.
In one embodiment, measured value of the control unit 51 based on inlet temperature makes motor 7 start and stop, and is based on
The measured value of outlet temperature and make the speed change of motor 7 via frequency converter 8.Fig. 5 (a) is that the input for representing an embodiment is extremely controlled
The figure of one example of the change of the measured value of the inlet temperature in portion 51 and the measured value of outlet temperature, Fig. 5 (b) is to represent adjoint
The change of the measured value of inlet temperature shown in Fig. 5 (a) and the measured value of outlet temperature, the motor 7 controlled by control unit 51
The figure of action.In Fig. 5 (a), transverse axis represents the time, and the longitudinal axis represents temperature.In addition in Fig. 5 (a), the measured value of inlet temperature
Described with solid line, the measured value of outlet temperature is described with dotted line.In Fig. 5 (b), transverse axis represents the time, and the longitudinal axis represents motor
Rotary speed.
The measured value of the inlet temperature determined by inlet temperature sensor 13 and determined by outlet temperature sensor 19
The measured value of the outlet temperature gone out, is inputted to control unit via signal cable 23,24 (reference picture 4) or by radio communication
51.When the measured value of inlet temperature exceedes defined threshold value (moment A), control unit 51 starts motor 7, rotates fan 5.
The defined threshold value is pre-stored within control unit 51, and 28 DEG C are set in the present embodiment.
The convergent target temperature of outlet temperature for the liquid for making to discharge from heat exchanger in addition, control unit 51 is stored with.
In present embodiment, target temperature is set to 32 DEG C.Defined threshold value (being in the present embodiment 28 DEG C) is preferably set to
The temperature of target temperature (being in the present embodiment 32 DEG C) below.If the temperature that is, defined threshold value that motor 7 starts will be made
It is set as the temperature below target temperature, then can makes motor 7 in the state of the outlet temperature of liquid is below target temperature
Rotation.That is, control unit 51 is judged as that the load of the equipment of liquid cooling increases when the inlet temperature of liquid exceedes defined threshold value
Plus, before the outlet temperature of liquid exceedes target temperature, start the rotation of motor 7.
If the rotation of fan 5 is directed the air into heat exchanger body 3,32, heat exchanger master is imported into from ingress pipe 10
The liquid of body 3,32 is cooled down by the air.If the mechanical load of liquid cooling further increases, the inlet temperature of liquid with
And outlet temperature gradually increases.If the measured value of the outlet temperature determined by outlet temperature sensor 19 exceedes target temperature
(32 DEG C) (moment B), then control unit 51 is to make the mode that the measured value of outlet temperature is consistent with target temperature, via frequency converter 8
The rotary speed of motor 7 is set to increase or reduce.More specifically, liquid of the control unit 51 based on input to the control unit 51
The measured value of outlet temperature, execution makes the outlet temperature of the liquid feedback control consistent with target temperature (such as PID control).
Fig. 6 is the measured value based on the outlet temperature shown in Fig. 5 (a), controls the feedback control of the rotary speed of motor 7
Block diagram.In the feedback control shown in Fig. 6, the measured value of outlet temperature of the control unit 51 based on liquid, the outlet to making liquid
Temperature (that is, make the measured value of the outlet temperature of liquid and the deviation of target temperature close to 0) motor 7 consistent with target temperature
The operational ton of rotary speed is calculated.Thus control unit 51 controls motor 7 by the way that the operational ton is exported to frequency converter 8
Rotary speed.Increase if making the rotary speed of motor 7, imported into the flow increase of the air of heat exchanger, liquid can be made
Outlet temperature reduction.On the other hand, if reducing the rotary speed of motor 7, it imported into the flow of the air of heat exchanger
Reduce, so as to increase the outlet temperature of liquid.
In the present embodiment, control unit 51 is when the measured value of the outlet temperature of liquid starts reduction, with going out for liquid
Mouth temperature convergence is the mode of target temperature, the rotary speed of motor 7 is gradually reduced (reference picture 5 (b)).If the outlet of liquid
The measured value of temperature starts increase after being reduced than target temperature, then control unit 51 again increases the rotary speed of motor 7.
So, control unit 51 converges to the side of target temperature with the measured value of the outlet temperature determined by outlet temperature sensor 19
Formula, makes the rotary speed of motor 7 increase or reduce.
Control unit 51 is preferably when the measured value of outlet temperature exceedes target temperature, and making the rotary speed of motor 7 increases to
Highest rotary speed.Motor 7 is operated with highest rotary speed, and thus enabling that the outlet temperature of liquid reduces rapidly.
Turn into defined threshold value (28 in the measured value of the inlet temperature of the liquid determined by inlet temperature sensor 13
DEG C) below when, control unit 51 is judged as without being cooled down with heat exchanger to liquid, so that motor 7 stops.By making horse
Stop up to 7, the power consumption of heat exchanger can be reduced.(the reference picture 5 when the measured value of inlet temperature exceedes defined threshold value
(a) at the time of A), control unit 51 again starts motor 7.
Fig. 7 (a) is to represent the input of other embodiment to the measured value and outlet temperature of the inlet temperature of control unit 51
Measured value change an example figure, Fig. 7 (b) is to represent the measured value with the inlet temperature shown in Fig. 7 (a) with going out
The change of the measured value of mouth temperature, the figure of the action of the motor 7 controlled by control unit 51.In Fig. 7 (a), transverse axis represents the time,
The longitudinal axis represents temperature.In addition in Fig. 7 (a), the measured value of inlet temperature is described with solid line, the measured value dotted line of outlet temperature
Describe.In Fig. 7 (b), transverse axis represents the time, and the longitudinal axis represents the rotary speed of motor.In addition, Fig. 8 is based on shown in Fig. 7 (a)
Inlet temperature and outlet temperature measured value, control motor 7 rotary speed feedback control block diagram.
In the present embodiment, control unit 51 is based not only on the measured value of outlet temperature and the deviation of target temperature, and
The difference (AT) of the measured value of measured value and outlet temperature based on inlet temperature, execution makes the feedback control of the speed change of motor 7.More
For body, control unit 51 is performed to the rotary speed of motor 7 makes the measured value of outlet temperature and the deviation of target temperature close to 0
The operational ton of the rotary speed of motor 7, with making the difference (AT) of the measured value of inlet temperature and the measured value of outlet temperature be minimum
Motor 7 rotary speed operational ton both sides feedback control.
Even if control unit 51 performs the feedback control for making the measured value of outlet temperature and the deviation of target temperature close to 0, if
The load increase of the equipment of liquid cooling, then the difference (AT) of the measured value of the measured value of inlet temperature and outlet temperature also increases.
Or, if the load of the equipment of liquid cooling is reduced, the difference (AT) of the measured value of inlet temperature and the measured value of outlet temperature
Also reduce.If the load of the particularly equipment of liquid cooling is sharply increased or reduced, the measured value of inlet temperature and outlet
The difference (AT) of the measured value of temperature is also sharply increased or reduced.
Control unit 51 can according to the increase of the measured value of inlet temperature and the difference (AT) of the measured value of outlet temperature or
Reduce, judge the increase or reduction of machine utilization.Performed by control unit 51 and consider the measured value for making inlet temperature with going out
The difference (AT) of the measured value of mouth temperature is the feedback control of the operational ton of the rotary speed of minimum motor 7, thus, it is possible to perform
Increase with the load of equipment or the rotary speed control for reducing corresponding more appropriate motor 7.As a result, liquid can be made
Outlet temperature converge to target temperature rapidly.
In the present embodiment, it is also measured value in the inlet temperature of the liquid determined by inlet temperature sensor 13
During for defined threshold value (28 DEG C) below, control unit 51 stops the rotation of motor 7., can by stopping the rotation of motor 7
Reduce the power consumption of heat exchanger.
Above-mentioned embodiment is can to implement this with the people of the usual knowledge with the utility model art
Recorded for the purpose of utility model.As long as various modifications example those skilled in the art of above-mentioned embodiment then certainly can
Implement, technological thought of the present utility model can also apply to other embodiment.Therefore the utility model is not limited to record
Embodiment, should be the widest range for following technological thought as defined in the claims.
Claims (2)
1. a kind of heat exchanger, it is characterised in that possess：
Heat exchanger body, it carries out heat exchange between liquid-to-air；
Ingress pipe, liquid is directed into the heat exchanger body by it；
Drainpipe, it discharges liquid from the heat exchanger body；
Inlet temperature sensor, it is measured to the temperature of liquid that is, inlet temperature that are flowed in the ingress pipe；
Outlet temperature sensor, it is measured to the temperature of liquid that is, outlet temperature that are flowed in the drainpipe；
Fan, it is used to direct the air into the heat exchanger body；
Motor, it rotates the fan；
Frequency converter, it can make the motor speed varying；And
The measured value of control unit, its measured value based on the inlet temperature and the outlet temperature, via the frequency converter
Action to the motor is controlled.
2. heat exchanger according to claim 1, it is characterised in that
The motor, the frequency converter and the control unit are contained in same motor box.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016030733A JP6629626B2 (en) | 2016-02-22 | 2016-02-22 | Heat exchanger |
| JP2016-030733 | 2016-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206583321U true CN206583321U (en) | 2017-10-24 |
Family
ID=59675109
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710089456.3A Pending CN107101524A (en) | 2016-02-22 | 2017-02-20 | Heat exchanger |
| CN201720152656.4U Active CN206583321U (en) | 2016-02-22 | 2017-02-20 | Heat exchanger |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710089456.3A Pending CN107101524A (en) | 2016-02-22 | 2017-02-20 | Heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6629626B2 (en) |
| CN (2) | CN107101524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101524A (en) * | 2016-02-22 | 2017-08-29 | 株式会社荏原制作所 | Heat exchanger |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102325379B1 (en) * | 2021-04-14 | 2021-11-10 | 경상국립대학교산학협력단 | Operation Control Method for High Temperature Difference and Low Condenser Water Temperature on Cooling Towers |
| CN113503765A (en) * | 2021-07-13 | 2021-10-15 | 张家港盈鼎气体有限公司 | Automatic control method for water temperature of circulating water in winter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042597A (en) * | 1983-08-18 | 1985-03-06 | Takasago Thermal Eng Co Lts | Energy-saving operation controlling device for cooling tower |
| JP4081737B2 (en) * | 1999-10-06 | 2008-04-30 | 日立金属株式会社 | Cooling system |
| JP2004015956A (en) * | 2002-06-10 | 2004-01-15 | Matsushita Electric Ind Co Ltd | Driving circuit integrated motor |
| EP2276990B1 (en) * | 2008-03-24 | 2019-04-03 | Prime Datum, Inc. | Integrated fan drive system forair-cooled heat exchanger (ache) |
| JP5455338B2 (en) * | 2008-09-01 | 2014-03-26 | 矢崎エナジーシステム株式会社 | Cooling tower and heat source system |
| JP6277364B2 (en) * | 2011-10-21 | 2018-02-14 | プライム デイタム、インコーポレーテッド | Direct drive fan system with variable processing control |
| JP2014087728A (en) * | 2012-10-29 | 2014-05-15 | Miura Co Ltd | Water treatment adjusting system |
| JP6020714B2 (en) * | 2013-04-08 | 2016-11-02 | 富士電機株式会社 | Control device for cooling system |
| JP6629626B2 (en) * | 2016-02-22 | 2020-01-15 | 株式会社荏原製作所 | Heat exchanger |
-
2016
- 2016-02-22 JP JP2016030733A patent/JP6629626B2/en active Active
-
2017
- 2017-02-20 CN CN201710089456.3A patent/CN107101524A/en active Pending
- 2017-02-20 CN CN201720152656.4U patent/CN206583321U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101524A (en) * | 2016-02-22 | 2017-08-29 | 株式会社荏原制作所 | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6629626B2 (en) | 2020-01-15 |
| CN107101524A (en) | 2017-08-29 |
| JP2017150679A (en) | 2017-08-31 |
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