CN110145804A - The control method and device of frequency converter cooling device - Google Patents
The control method and device of frequency converter cooling device Download PDFInfo
- Publication number
- CN110145804A CN110145804A CN201910385390.1A CN201910385390A CN110145804A CN 110145804 A CN110145804 A CN 110145804A CN 201910385390 A CN201910385390 A CN 201910385390A CN 110145804 A CN110145804 A CN 110145804A
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- temperature
- expansion valve
- tube
- electric expansion
- switch
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- 238000001816 cooling Methods 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000017525 heat dissipation Effects 0.000 claims abstract description 21
- 238000009833 condensation Methods 0.000 abstract description 10
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 11
- 239000003507 refrigerant Substances 0.000 description 9
- 239000002826 coolant Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000004907 flux Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Rectifiers (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention proposes the control method and device of a kind of frequency converter cooling device, wherein, frequency converter cooling device includes: first switch tube, first radiator, second switch, second radiator, third switching tube, third radiator, first electric expansion valve, second electric expansion valve, third electric expansion valve, and cooling and dehumidifying evaporator, method includes: to obtain the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, and, obtain first switch tube, the tube temperature of second switch and third switching tube, and according to the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, the working condition of cooling and dehumidifying evaporator is adjusted, and, according to first switch tube, the tube temperature and the first preset temperature of second switch and third switching tube, to the first electric expansion valve, second electric expansion valve and third electric expansion valve are controlled System promotes reliability while the heat dissipation performance for ensuring frequency converter cooling device, to avoid the condensation risk of frequency converter cooling device.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to the control methods and a kind of frequency conversion of a kind of frequency converter cooling device
The control device of device radiator.
Background technique
The air conditioner of the relevant technologies when usually only radiating to power module, can carry out concentration heat dissipation using radiator.
But the problem of the relevant technologies, is, uneven when there is radiator heat-dissipation, i.e. the lower situation of radiator side temperature
Under, if radiator side temperature is lower than the dew-point temperature of environment, condensation is easily generated, the reliability of power module is reduced,
There is the problems such as short circuit, in addition, there is also the condensation problems in addition to power module.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
First purpose be to propose a kind of control method of frequency converter cooling device, can be in the heat dissipation for ensuring frequency converter cooling device
While performance, the condensation risk of frequency converter cooling device is avoided, promotes reliability.
Second object of the present invention is to propose a kind of control device of frequency converter cooling device.
In order to achieve the above objectives, first aspect present invention proposes a kind of control method of frequency converter cooling device, wherein
The frequency converter cooling device includes: the first radiator for radiating to first switch tube, for radiating to second switch
The second radiator, the third radiator for radiating to third switching tube, the first electronics being connected with first radiator
Expansion valve, the second electric expansion valve being connected with second radiator, the third electronics being connected with the third radiator are swollen
Swollen valve and cooling and dehumidifying evaporator, which comprises obtain the temperature and ambient wet bulb temperature of the cooling and dehumidifying evaporator
Degree；Obtain the tube temperature of the first switch tube, the second switch and the third switching tube；It is steamed according to the cooling and dehumidifying
The temperature of hair device and the ambient wet bulb temperature, are adjusted the working condition of the cooling and dehumidifying evaporator；And according to
The tube temperature and the first preset temperature of the first switch tube, the second switch and the third switching tube, to described first
Electric expansion valve, second electric expansion valve and the third electric expansion valve are controlled.
The control method of frequency converter cooling device according to an embodiment of the present invention, obtain cooling and dehumidifying evaporator temperature and
Ambient wet bulb temperature, and, first switch tube, the tube temperature of second switch and third switching tube are obtained, in turn, is removed according to cooling
The temperature and ambient wet bulb temperature of wet evaporator, are adjusted the working condition of cooling and dehumidifying evaporator, and, according to first
Switching tube, the tube temperature of second switch and third switching tube and the first preset temperature, it is swollen to the first electric expansion valve, the second electronics
Swollen valve and third electric expansion valve are controlled, to avoid frequency conversion while the heat dissipation performance for ensuring frequency converter cooling device
The condensation risk of device radiator promotes reliability.
In addition, the control method of frequency converter cooling device according to the above embodiment of the present invention can also have it is following attached
Add technical characteristic:
According to one embodiment of present invention, the temperature according to the cooling and dehumidifying evaporator and the ambient wet bulb
Temperature is adjusted the working condition of the cooling and dehumidifying evaporator, comprising: if the temperature of the cooling and dehumidifying evaporator is big
In the ambient wet bulb temperature, then the working condition adjustment of the cooling and dehumidifying evaporator is in off state；If the cooling
The temperature of dehumidify evaporimeter is less than or equal to the ambient wet bulb temperature, then by the working condition tune of the cooling and dehumidifying evaporator
Whole is open state.
According to one embodiment of present invention, described according to the first switch tube, the second switch and described
The tube temperature of three switching tubes and the first preset temperature, to first electric expansion valve, second electric expansion valve and described
Three electric expansion valves are controlled, comprising: if the tube temperature of the first switch tube is greater than first preset temperature, control institute
It states the first electric expansion valve and promotes the first default aperture；If the tube temperature of the second switch is greater than first preset temperature,
It then controls second electric expansion valve and promotes the first default aperture；If the tube temperature of the third switching tube is greater than described the
One preset temperature then controls the third electric expansion valve and promotes the first default aperture.
According to one embodiment of present invention, described according to the first switch tube, the second switch and described
The tube temperature of three switching tubes and the first preset temperature, to first electric expansion valve, second electric expansion valve and described
Three electric expansion valves are controlled, further includes: if the tube temperature of the first switch tube is less than or equal to first preset temperature,
Then controlling first electric expansion valve reduces by the first default aperture；If the tube temperature of the second switch is less than or equal to
First preset temperature, then controlling second electric expansion valve reduces by the first default aperture；If the third switch
The tube temperature of pipe is less than or equal to first preset temperature, then controls the third electric expansion valve and reduce described first and default open
Degree.
According to one embodiment of present invention, the frequency converter cooling device further include: for radiating to first diode
The 4th radiator and the 4th electric expansion valve that is connected with the 4th radiator, the method also includes: obtain described the
The tube temperature of one diode；According to the tube temperature of the first diode and the second preset temperature, to the 4th electric expansion valve into
Row control.
According to one embodiment of present invention, the tube temperature according to the first diode and the second preset temperature, it is right
4th electric expansion valve is controlled, comprising: if the tube temperature of the first diode is greater than second preset temperature,
It controls the 4th electric expansion valve and promotes the first default aperture；If the tube temperature of the first diode is less than or equal to described the
Two preset temperatures, then controlling the 4th electric expansion valve reduces by the first default aperture.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of control dress of frequency converter cooling device
It sets, wherein the frequency converter cooling device includes: the first radiator for radiating to first switch tube, for opening second
It closes the second radiator of pipe heat dissipation, the third radiator for radiating to third switching tube, be connected with first radiator
First electric expansion valve, the second electric expansion valve being connected with second radiator, be connected with the third radiator
Three electric expansion valves and cooling and dehumidifying evaporator, the control device include: the first acquisition module, and described first obtains mould
Block is used to obtain the temperature and ambient wet bulb temperature of the cooling and dehumidifying evaporator；Second obtains module, and described second obtains mould
Block is used to obtain the tube temperature of the first switch tube, the second switch and the third switching tube；Adjust module, the tune
Mould preparation block is used for temperature and the ambient wet bulb temperature according to the cooling and dehumidifying evaporator, to the cooling and dehumidifying evaporator
Working condition be adjusted；And control module, the control module are used for according to the first switch tube, described second
The tube temperature and the first preset temperature of switching tube and the third switching tube, to first electric expansion valve, second electronics
Expansion valve and the third electric expansion valve are controlled.
The control device of frequency converter cooling device according to an embodiment of the present invention obtains cooling by the first acquisition module and removes
The temperature and ambient wet bulb temperature of wet evaporator, and obtain module by second and obtain first switch tube, second switch and the
The tube temperature of three switching tubes, in turn, by adjusting module according to the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, to cooling
The working condition of dehumidify evaporimeter is adjusted, and, by control module according to first switch tube, second switch and third
The tube temperature of switching tube and the first preset temperature, to the first electric expansion valve, the second electric expansion valve and third electric expansion valve into
Row control, while the heat dissipation performance for ensuring frequency converter cooling device, to avoid the condensation risk of frequency converter cooling device, mentions
Rise reliability.
In addition, the control device of frequency converter cooling device according to the above embodiment of the present invention can also have it is following attached
Add technical characteristic:
According to one embodiment of present invention, the adjustment module is also used to, if the temperature of the cooling and dehumidifying evaporator
Greater than the ambient wet bulb temperature, then the working condition adjustment of the cooling and dehumidifying evaporator is in off state；If described cold
But the temperature of dehumidify evaporimeter is less than or equal to the ambient wet bulb temperature, then by the working condition of the cooling and dehumidifying evaporator
It is adjusted to open state.
According to one embodiment of present invention, the control module is also used to: if the tube temperature of the first switch tube is greater than
First preset temperature then controls first electric expansion valve and promotes the first default aperture；If the second switch
Tube temperature is greater than first preset temperature, then controls second electric expansion valve and promote the first default aperture；If described
The tube temperature of third switching tube is greater than first preset temperature, then it is default to control the third electric expansion valve promotion described first
Aperture.
According to one embodiment of present invention, the control module is also used to, if the tube temperature of the first switch tube is less than
Or be equal to first preset temperature, then controlling first electric expansion valve reduces by the first default aperture；If described
The tube temperature of two switching tubes is less than or equal to first preset temperature, then controlling second electric expansion valve reduces described first
Default aperture；If the tube temperature of the third switching tube is less than or equal to first preset temperature, the third electronics is controlled
Expansion valve reduces by the first default aperture.
According to one embodiment of present invention, the frequency converter cooling device further include: for radiating to first diode
The 4th radiator and the 4th electric expansion valve that is connected with the 4th radiator, the control device further include: third obtains
Modulus block, the third obtain the tube temperature that module is used to obtain the first diode；The control module is also used to, according to institute
The tube temperature and the second preset temperature for stating first diode, control the 4th electric expansion valve.
According to one embodiment of present invention, the control module is also used to, if the tube temperature of the first diode is greater than
Second preset temperature then controls the 4th electric expansion valve and promotes the first default aperture；If the first diode
Tube temperature is less than or equal to second preset temperature, then controlling the 4th electric expansion valve reduces by the first default aperture.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the frequency converter cooling device of one embodiment of the invention；
Fig. 2 is the connected mode schematic diagram according to the frequency converter cooling device of one embodiment of the invention；
Fig. 3 is the flow diagram according to the control method of the frequency converter cooling device of the embodiment of the present invention；
Fig. 4 is the flow diagram according to the control method of the frequency converter cooling device of one embodiment of the invention；
Fig. 5 is the flow diagram according to the control method of the frequency converter cooling device of another embodiment of the present invention；
Fig. 6 is the flow diagram according to the control method of the frequency converter cooling device of further embodiment of the present invention；
Fig. 7 is the flow diagram according to the control method of the frequency converter cooling device of another embodiment of the invention；
Fig. 8 is the block diagram according to the control device of the frequency converter cooling device of the embodiment of the present invention；
Fig. 9 is the block diagram according to the control device of the frequency converter cooling device of one embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the control method and device of frequency converter cooling device of the invention are described.
Fig. 1 is the structural schematic diagram according to the frequency converter cooling device of one embodiment of the invention.
As shown in Figure 1, in some embodiments of the invention, frequency converter cooling device 100 includes: for first switch
First radiator 10 of pipe heat dissipation, is used to radiate to third switching tube at the second radiator 20 for radiating to second switch
Third radiator 30, be connected with the first radiator 10 the first electric expansion valve 101, be connected with the second radiator 20 second
Electric expansion valve 201, the third electric expansion valve 301 being connected with third radiator 30 and cooling and dehumidifying evaporator 40.
Optionally, in an embodiment of the present invention, the first radiator 10, the second radiator 20 and third radiator 30 can be
Refrigerant radiator.
Specifically, as shown in Fig. 2, one end of frequency converter cooling device 100 is connected with one end of coolant throttle valve c, and
It is connected with the entrance of evaporator d, the other end of frequency converter cooling device 100 is connected with the other end of coolant throttle valve c, Yi Jiyu
The outlet of condenser e is connected.
Further, the refrigerant of air conditioner enters compressor INC, to be compressed into the gaseous coolant of high temperature and pressure, then, into
Enter condenser e, to be condensed into the liquid refrigerants of high pressure, then by coolant throttle valve c, to be converted into two phases of low pressure, i.e. gas
Liquid admixture, and enter evaporator d, to flash to gaseous coolant, and compressor INC is reentered, thus, realize refrigerant
One cycle.
It is understood that passing through the one of refrigerant passage b in the frequency converter cooling device 100 of air conditioner of the invention
End is connected with one end of coolant throttle valve c, and is connected with the entrance of evaporator d, the other end and coolant throttle of refrigerant passage b
The other end of valve c is connected, and is connected with the outlet of condenser e, thus, operative liquid refrigerant can enter refrigerant radiator c, with
It radiates to frequency converter a, and with by the refrigerant of coolant throttle valve c, enters evaporator d together.
Further, as shown in Figure 1, the frequency converter cooling device of the embodiment of the present invention further includes throttling set 60 and fan
70。
Optionally, throttling set 60 can be capillary or electric expansion valve.
That is, the frequency converter cooling device 100 of the air conditioner of the embodiment of the present invention is by the way that throttling set 60 to be arranged
It for capillary or electric expansion valve, throttles to cooling and dehumidifying evaporator 40, to reduce the temperature of cooling and dehumidifying evaporator 40
Pressure.
Further, as shown in Figure 1, fan 70 is disposed adjacent with cooling and dehumidifying evaporator 40.
It is understood that the air after 40 cooling and dehumidifying of cooling and dehumidifying evaporator is blowed to frequency converter by fan 70
Inside, to radiate to frequency converter inside other electrical parts, such as capacitor, reactance and breaker etc..
Further, as shown in figure 3, according to one embodiment of present invention, the control method packet of frequency converter cooling device
It includes:
S101 obtains the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator.
Optionally, in an embodiment of the present invention, by the way that the temperature sensor on cooling and dehumidifying evaporator 40 is arranged in
The temperature of cooling and dehumidifying evaporator 40 is obtained, and by the way that the temperature sensor inside frequency converter is arranged in, obtains ambient wet bulb
Temperature.
S102 obtains first switch tube, the tube temperature of second switch and third switching tube.
Optionally, in an embodiment of the present invention, it is opened by being separately positioned on first switch tube, second switch and third
The temperature sensor at pipe is closed, first switch tube, the tube temperature of second switch and third switching tube are obtained.
S103, according to the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, to the work shape of cooling and dehumidifying evaporator
State is adjusted.
It should be noted that the working condition of cooling and dehumidifying evaporator 40 includes open state and closed state.
Specifically, as shown in figure 4, according to one embodiment of present invention, according to the temperature and ring of cooling and dehumidifying evaporator
Border wet-bulb temperature is adjusted the working condition of cooling and dehumidifying evaporator, comprising:
S201, if the temperature of cooling and dehumidifying evaporator is greater than ambient wet bulb temperature, by the work of cooling and dehumidifying evaporator
State adjustment is in off state.
That is, when the temperature of cooling and dehumidifying evaporator 40 is greater than ambient wet bulb temperature, adjustment cooling and dehumidifying evaporation
The working condition of device 40 is in off state.
S202, if the temperature of cooling and dehumidifying evaporator is less than or equal to ambient wet bulb temperature, by cooling and dehumidifying evaporator
Working condition be adjusted to open state.
That is, adjusting cooling steam when the temperature of cooling and dehumidifying evaporator 40 is less than or equal to ambient wet bulb temperature
The working condition for sending out device 40 is open state.
It should be understood that in an embodiment of the present invention, being less than or equal to environment in the temperature of cooling and dehumidifying evaporator 40
When wet-bulb temperature, there are condensation risks inside frequency converter, at this point, the working condition by adjusting cooling and dehumidifying evaporator 40 is to open
Dynamic state, to cool down to the electronic component inside frequency converter, and dehumidifies to frequency converter inside, to reduce frequency converter
Internal condensation risk promotes the reliability of frequency converter.
S104, according to first switch tube, the tube temperature of second switch and third switching tube and the first preset temperature, to first
Electric expansion valve, the second electric expansion valve and third electric expansion valve are controlled.
Further, according to one embodiment of present invention, as shown in figure 5, according to first switch tube, second switch and
The tube temperature of third switching tube and the first preset temperature, to the first electric expansion valve, the second electric expansion valve and third electronic expansion
Valve is controlled, comprising:
S301 controls the first electric expansion valve and promotes first if the tube temperature of first switch tube is greater than the first preset temperature
Default aperture.
That is, the first electric expansion valve 101 of control mentions when the tube temperature of first switch tube is greater than the first preset temperature
Rise the first default aperture, wherein the first preset temperature can be demarcated accordingly according to the normal working temperature of switching tube.
It should be understood that in an embodiment of the present invention, it, can when the tube temperature of first switch tube is greater than the first preset temperature
The current radiating requirements for being unable to satisfy first switch tube for thinking the first radiator 10, by controlling the first electric expansion valve 101
The first default aperture is promoted, to increase the cold medium flux of the first radiator 10, thus, promote the heat dissipation effect of the first radiator 10
Fruit reduces the tube temperature of first switch tube.
In addition, in an embodiment of the present invention, after controlling the first electric expansion valve 101 the first default aperture of promotion,
If the tube temperature of first switch tube is still greater than the first preset temperature, it is default to continue the promotion first of the first electric expansion valve 101 of control
Aperture.
S302 controls the second electric expansion valve and promotes first if the tube temperature of second switch is greater than the first preset temperature
Default aperture.
That is, the second electric expansion valve 201 of control mentions when the tube temperature of second switch is greater than the first preset temperature
Rise the first default aperture.
It should be understood that in an embodiment of the present invention, it, can when the tube temperature of second switch is greater than the first preset temperature
The current radiating requirements for being unable to satisfy second switch for thinking the second radiator 20, by controlling the second electric expansion valve 201
The first default aperture is promoted, to increase the cold medium flux of the second radiator 20, thus, promote the heat dissipation effect of the second radiator 20
Fruit reduces the tube temperature of second switch.
In addition, in an embodiment of the present invention, after controlling the second electric expansion valve 201 the first default aperture of promotion,
If the tube temperature of second switch is still greater than the first preset temperature, it is default to continue the promotion first of the second electric expansion valve 201 of control
Aperture.
S303 controls third electric expansion valve and promotes first if the tube temperature of third switching tube is greater than the first preset temperature
Default aperture.
That is, control third electric expansion valve 301 mentions when the tube temperature of third switching tube is greater than the first preset temperature
Rise the first default aperture.
It should be understood that in an embodiment of the present invention, it, can when the tube temperature of third switching tube is greater than the first preset temperature
The current radiating requirements for being unable to satisfy third switching tube for thinking third radiator 30, by controlling third electric expansion valve 301
The first default aperture is promoted, to increase the cold medium flux of third radiator 30, thus, promote the heat dissipation effect of third radiator 30
Fruit reduces the tube temperature of third switching tube.
In addition, in an embodiment of the present invention, after controlling the first default aperture of promotion of third electric expansion valve 301,
If the tube temperature of third switching tube is still greater than the first preset temperature, it is default to continue the promotion first of control third electric expansion valve 301
Aperture.
Further, as shown in figure 5, according to one embodiment of present invention, according to first switch tube, second switch and
The tube temperature of third switching tube and the first preset temperature, to the first electric expansion valve, the second electric expansion valve and third electronic expansion
Valve is controlled, further includes:
S304 controls the first electric expansion valve drop if the tube temperature of first switch tube is less than or equal to the first preset temperature
Low first default aperture.
That is, controlling the first electronic expansion when the tube temperature of first switch tube is less than or equal to the first preset temperature
Valve 101 reduces the first default aperture.
It should be understood that in an embodiment of the present invention, when the tube temperature of first switch tube is less than or equal to the first default temperature
When spending, it is believed that the radiating requirements of first switch tube are superfluous, and the first electric expansion valve 101 of control reduces the first default aperture, with
The cold medium flux of the first radiator 10 is reduced, thus, the heat dissipation effect of the first radiator 10 is reduced, the temperature of first switch tube is promoted
Degree.
In addition, in an embodiment of the present invention, after controlling the first electric expansion valve 101 and reducing the first default aperture,
If the tube temperature of first switch tube still less than or be equal to the first preset temperature, continuing to control the first electric expansion valve 101 reduces by the
One default aperture.
S305 controls the second electric expansion valve drop if the tube temperature of second switch is less than or equal to the first preset temperature
Low first default aperture.
That is, controlling the second electronic expansion when the tube temperature of second switch is less than or equal to the first preset temperature
Valve 201 reduces the first default aperture.
It should be understood that in an embodiment of the present invention, when the tube temperature of second switch is less than or equal to the first default temperature
When spending, it is believed that the radiating requirements of second switch are superfluous, and the second electric expansion valve 201 of control reduces the first default aperture, with
The cold medium flux of the second radiator 20 is reduced, thus, the heat dissipation effect of the second radiator 20 is reduced, the temperature of second switch is promoted
Degree.
In addition, in an embodiment of the present invention, after controlling the second electric expansion valve 201 and reducing the first default aperture,
If the tube temperature of second switch still less than or be equal to the first preset temperature, continuing to control the second electric expansion valve 201 reduces by the
One default aperture.
S306 controls third electric expansion valve drop if the tube temperature of third switching tube is less than or equal to the first preset temperature
Low first default aperture.
That is, controlling the first electronic expansion when the tube temperature of first switch tube is less than or equal to the first preset temperature
Valve 101 reduces the first default aperture.
It should be understood that in an embodiment of the present invention, when the tube temperature of third switching tube is less than or equal to the first default temperature
When spending, it is believed that the radiating requirements of third switching tube are superfluous, and control third electric expansion valve 301 reduces the first default aperture, with
The cold medium flux of third radiator 30 is reduced, thus, the heat dissipation effect of third radiator 30 is reduced, the temperature of third switching tube is promoted
Degree.
In addition, in an embodiment of the present invention, after control third electric expansion valve 301 reduces the first default aperture,
If the tube temperature of third switching tube still less than or be equal to the first preset temperature, continuing to control third electric expansion valve 301 reduces by the
One default aperture.
Specifically, in an embodiment of the present invention, by controlling the first electric expansion valve 101, the second electric expansion valve
201 and third electric expansion valve 301 aperture, thus, control first switch tube, second switch and third switching tube pipe
Temperature.When the tube temperature of switching tube is greater than the first preset temperature, controls corresponding electric expansion valve and promote the first default aperture, from
And increase the cold medium flux by corresponding radiator, to promote the heat dissipation effect of corresponding radiator, reduce the pipe of corresponding switching tube
Temperature, in addition, controlling corresponding electric expansion valve reduction when the tube temperature of switching tube is less than or equal to first and presets warm spend and opening
Degree, thus, the cold medium flux by corresponding radiator is reduced, to reduce the heat dissipation effect of corresponding radiator, is improved to inductive switch
The tube temperature of pipe.As a result, by the way that the tube temperature of each switching tube is controlled to same or similar temperature, be conducive to the electricity by each switching tube
Mobile equilibrium, thus, extend each switching tube service life.
Further, as shown in Figure 1, according to one embodiment of present invention, frequency converter cooling device 100 further include: use
In the 4th radiator 50 to radiate to first diode and the 4th electric expansion valve 501 being connected with the 4th radiator 501, such as scheme
Shown in 6, method further include:
S105 obtains the tube temperature of first diode.
Optionally, the tube temperature of first diode can be obtained by the way that the temperature sensor at first diode is arranged in.
S106 controls the 4th electric expansion valve according to the tube temperature of first diode and the second preset temperature.
Specifically, pre- with second according to the tube temperature of first diode as shown in fig. 7, according to one embodiment of present invention
If temperature, the 4th electric expansion valve is controlled, comprising:
S401, if the tube temperature of first diode is greater than the second preset temperature, the 4th electric expansion valve of control promotes first
Default aperture.
That is, the 4th electric expansion valve 501 of control mentions when the tube temperature of first diode is greater than the second preset temperature
Rise the first default aperture.
S402, if the tube temperature of first diode is less than or equal to the second preset temperature, control the 4th electric expansion valve drop
Low first default aperture.
That is, controlling the 4th electronic expansion when the tube temperature of first diode is less than or equal to the second preset temperature
Valve 501 reduces the first default aperture.
It should be noted that in an embodiment of the present invention, controlling, the 4th electric expansion valve 501 promotion first is default
After aperture, if the tube temperature of first diode is still greater than the first preset temperature, continue to control the promotion of the 4th electric expansion valve 501
First default aperture, and, after controlling the 4th electric expansion valve 501 and reducing the first default aperture, if first diode
Tube temperature still less than or be equal to the first preset temperature, then continue control the 4th electric expansion valve 501 reduce the first default aperture.
To sum up, the control method of frequency converter cooling device according to an embodiment of the present invention obtains cooling and dehumidifying evaporator
Temperature and ambient wet bulb temperature, and, first switch tube, the tube temperature of second switch and third switching tube are obtained, in turn, according to
The temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, are adjusted the working condition of cooling and dehumidifying evaporator, and, root
According to first switch tube, the tube temperature of second switch and third switching tube and the first preset temperature, to the first electric expansion valve, second
Electric expansion valve and third electric expansion valve are controlled, to keep away while the heat dissipation performance for ensuring frequency converter cooling device
Exempt from the condensation risk of frequency converter cooling device, promotes reliability.
Fig. 8 is the block diagram according to the control device of the frequency converter cooling device of the embodiment of the present invention.
As shown in figure 8, the control device 1000 of frequency converter cooling device includes: that the first acquisition module 1, second obtains module
2, module 3 and control module 4 are adjusted.
Wherein, the first acquisition module 1 is used to obtain the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator；Second obtains
Module 2 is used to obtain the tube temperature of first switch tube, second switch and third switching tube；Adjustment module 3 is steamed according to cooling and dehumidifying
The temperature and ambient wet bulb temperature for sending out device 40, are adjusted the working condition of cooling and dehumidifying evaporator 40；And control module
4 according to first switch tube, the tube temperature of second switch and third switching tube and the first preset temperature, to the first electric expansion valve
101, the second electric expansion valve 201 and third electric expansion valve 301 are controlled.
Further, according to one embodiment of present invention, adjustment module 3 is also used to, if cooling and dehumidifying evaporator 40
Temperature is greater than ambient wet bulb temperature, then is in off state the working condition adjustment of cooling and dehumidifying evaporator 40；If cooling and dehumidifying
The temperature of evaporator 40 is less than or equal to ambient wet bulb temperature, then is adjusted to open by the working condition of cooling and dehumidifying evaporator 40
State.
Further, according to one embodiment of present invention, control module 4 is also used to: if the tube temperature of first switch tube is big
In the first preset temperature, then controls the first electric expansion valve 101 and promote the first default aperture；If the tube temperature of second switch is greater than
First preset temperature then controls the second electric expansion valve 201 and promotes the first default aperture；If the tube temperature of third switching tube is greater than the
One preset temperature then controls third electric expansion valve 301 and promotes the first default aperture.
Further, according to one embodiment of present invention, control module 3 is also used to, if the tube temperature of first switch tube is small
In or equal to the first preset temperature, then controlling the first electric expansion valve 101 reduces the first default aperture；If the pipe of second switch
Temperature is less than or equal to the first preset temperature, then controlling the second electric expansion valve 201 reduces the first default aperture；If third switching tube
Tube temperature be less than or equal to the first preset temperature, then control third electric expansion valve 301 reduce the first default aperture.
Further, as shown in figure 9, according to one embodiment of present invention, control device 100 further include: third obtains
Module 5.
Wherein, third obtains the tube temperature that module 5 is used to obtain first diode；Control module 4 is also used to, according to the one or two
The tube temperature of pole pipe and the second preset temperature, control the 4th electric expansion valve 501.
Further, according to one embodiment of present invention, control module 3 is also used to, if the tube temperature of first diode is big
In the second preset temperature, then controls the 4th electric expansion valve 501 and promote the first default aperture；If the tube temperature of first diode is less than
Or be equal to the second preset temperature, then controlling the 4th electric expansion valve 501 reduces the first default aperture.
It should be noted that the specific embodiment of the control device of the frequency converter cooling device of the embodiment of the present invention with it is upper
The control method for stating frequency converter cooling device corresponds, and details are not described herein.
To sum up, the control device of frequency converter cooling device according to an embodiment of the present invention obtains module by first and obtains
The temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator, and obtain module by second and obtain first switch tube, second switch
The tube temperature of pipe and third switching tube, in turn, by adjusting module according to the temperature and ambient wet bulb temperature of cooling and dehumidifying evaporator,
The working condition of cooling and dehumidifying evaporator is adjusted, and, by control module according to first switch tube, second switch
It is swollen to the first electric expansion valve, the second electric expansion valve and third electronics with the tube temperature and the first preset temperature of third switching tube
Swollen valve is controlled, to avoid the condensation of frequency converter cooling device while the heat dissipation performance for ensuring frequency converter cooling device
Risk promotes reliability.
It should be noted that in flow charts indicate or logic and/or step described otherwise above herein, for example,
It is considered the order list of the executable instruction for realizing logic function, may be embodied in any computer can
Read in medium, for instruction execution system, device or equipment (such as computer based system, including the system of processor or its
He can be from instruction execution system, device or equipment instruction fetch and the system executed instruction) it uses, or combine these instruction executions
System, device or equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any may include, store,
Communicate, propagate, or transport program is for instruction execution system, device or equipment or combines these instruction execution systems, device or sets
The standby and device that uses.The more specific example (non-exhaustive list) of computer-readable medium include the following: have one or
The electrical connection section (electronic device) of multiple wirings, portable computer diskette box (magnetic device), random access memory (RAM), only
It reads memory (ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable light
Disk read-only memory (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or its
His suitable medium, because can then be edited for example by carrying out optical scanner to paper or other media, be interpreted or must
It is handled when wanting with other suitable methods electronically to obtain described program, is then stored in computer storage
In.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of control method of frequency converter cooling device, which is characterized in that the frequency converter cooling device includes: for
First radiator of one switching tube heat dissipation, is used to dissipate third switching tube the second radiator for radiating to second switch
The third radiator of heat, the first electric expansion valve being connected with first radiator, be connected with second radiator the
Two electric expansion valves, the third electric expansion valve and cooling and dehumidifying evaporator being connected with the third radiator, the method
Include:
Obtain the temperature and ambient wet bulb temperature of the cooling and dehumidifying evaporator；
Obtain the tube temperature of the first switch tube, the second switch and the third switching tube；
Work according to the temperature of the cooling and dehumidifying evaporator and the ambient wet bulb temperature, to the cooling and dehumidifying evaporator
State is adjusted；
And according to the default temperature of the first switch tube, the tube temperature of the second switch and the third switching tube and first
Degree, controls first electric expansion valve, second electric expansion valve and the third electric expansion valve.
2. the method as described in claim 1, which is characterized in that the temperature according to the cooling and dehumidifying evaporator with it is described
Ambient wet bulb temperature is adjusted the working condition of the cooling and dehumidifying evaporator, comprising:
If the temperature of the cooling and dehumidifying evaporator is greater than the ambient wet bulb temperature, by the work of the cooling and dehumidifying evaporator
Make state adjustment to be in off state；
If the temperature of the cooling and dehumidifying evaporator is less than or equal to the ambient wet bulb temperature, the cooling and dehumidifying is evaporated
The working condition of device is adjusted to open state.
3. the method as described in claim 1, which is characterized in that described according to the first switch tube, the second switch
With the tube temperature and the first preset temperature of the third switching tube, to first electric expansion valve, second electric expansion valve
It is controlled with the third electric expansion valve, comprising:
If the tube temperature of the first switch tube is greater than first preset temperature, controls first electric expansion valve and promote the
One default aperture；
If the tube temperature of the second switch is greater than first preset temperature, controls second electric expansion valve and promote institute
State the first default aperture；
If the tube temperature of the third switching tube is greater than first preset temperature, controls the third electric expansion valve and promote institute
State the first default aperture.
4. method as claimed in claim 3, which is characterized in that according to the first switch tube, the second switch and institute
The tube temperature and the first preset temperature for stating third switching tube, to first electric expansion valve, second electric expansion valve and institute
Third electric expansion valve is stated to be controlled, further includes:
If the tube temperature of the first switch tube is less than or equal to first preset temperature, first electric expansion valve is controlled
Reduce the described first default aperture；
If the tube temperature of the second switch is less than or equal to first preset temperature, second electric expansion valve is controlled
Reduce the described first default aperture；
If the tube temperature of the third switching tube is less than or equal to first preset temperature, the third electric expansion valve is controlled
Reduce the described first default aperture.
5. the method as described in claim 1, which is characterized in that the frequency converter cooling device further include: for the one or two
4th radiator of pole pipe heat dissipation and the 4th electric expansion valve being connected with the 4th radiator, the method also includes:
Obtain the tube temperature of the first diode；
According to the tube temperature of the first diode and the second preset temperature, the 4th electric expansion valve is controlled.
6. method as claimed in claim 5, which is characterized in that the tube temperature according to the first diode is default with second
Temperature adjusts the 4th electric expansion valve, comprising:
If the tube temperature of the first diode is greater than second preset temperature, controls the 4th electric expansion valve and promote the
One default aperture；
If the tube temperature of the first diode is less than or equal to second preset temperature, the 4th electric expansion valve is controlled
Reduce the described first default aperture.
7. a kind of control device of frequency converter cooling device, which is characterized in that the frequency converter cooling device includes: for
First radiator of one switching tube heat dissipation, is used to dissipate third switching tube the second radiator for radiating to second switch
The third radiator of heat, the first electric expansion valve being connected with first radiator, be connected with second radiator the
Two electric expansion valves, the third electric expansion valve and cooling and dehumidifying evaporator being connected with the third radiator, the control
Device includes:
First obtains module, and the first acquisition module is used to obtain the temperature and ambient wet bulb temperature of the cooling and dehumidifying evaporator
Degree；
Second obtains module, and the second acquisition module is for obtaining the first switch tube, the second switch and described
The tube temperature of third switching tube；
Module is adjusted, the adjustment module is used for temperature and the ambient wet bulb temperature according to the cooling and dehumidifying evaporator,
The working condition of the cooling and dehumidifying evaporator is adjusted；And
Control module, the control module are used to be switched according to the first switch tube, the second switch and the third
The tube temperature of pipe and the first preset temperature, to first electric expansion valve, second electric expansion valve and the third electronics
Expansion valve is controlled.
8. control device as claimed in claim 7, which is characterized in that the adjustment module is also used to, if the cooling and dehumidifying
The temperature of evaporator is greater than the ambient wet bulb temperature, then is adjusted to the working condition of the cooling and dehumidifying evaporator to close shape
State；
If the temperature of the cooling and dehumidifying evaporator is less than or equal to the ambient wet bulb temperature, the cooling and dehumidifying is evaporated
The working condition of device is adjusted to open state.
9. control device as claimed in claim 7, which is characterized in that the control module is also used to: if the first switch
The tube temperature of pipe is greater than first preset temperature, then controls first electric expansion valve and promote the first default aperture；
If the tube temperature of the second switch is greater than first preset temperature, controls second electric expansion valve and promote institute
State the first default aperture；
If the tube temperature of the third switching tube is greater than first preset temperature, controls the third electric expansion valve and promote institute
State the first default aperture.
10. control device as claimed in claim 7, which is characterized in that the control module is also used to, if the first switch
The tube temperature of pipe is less than or equal to first preset temperature, then controls first electric expansion valve and reduce described first and default open
Degree；
If the tube temperature of the second switch is less than or equal to first preset temperature, second electric expansion valve is controlled
Reduce the described first default aperture；
If the tube temperature of the third switching tube is less than or equal to first preset temperature, the third electric expansion valve is controlled
Reduce the described first default aperture.
11. control device as claimed in claim 7, which is characterized in that the frequency converter cooling device further include: for the
4th radiator of one diode radiating and the 4th electric expansion valve being connected with the 4th radiator, the control device is also
Include:
Third obtains module, and the third obtains the tube temperature that module is used to obtain the first diode；
The control module is also used to, according to the tube temperature of the first diode and the second preset temperature, to the 4th electronics
Expansion valve is controlled.
12. control device as claimed in claim 11, which is characterized in that the control module is also used to, if the described 1st
The tube temperature of pole pipe is greater than second preset temperature, then controls the 4th electric expansion valve and promote the first default aperture；
If the tube temperature of the first diode is less than or equal to second preset temperature, the 4th electric expansion valve is controlled
Reduce the described first default aperture.
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| CN201910385390.1A CN110145804B (en) | 2019-05-09 | 2019-05-09 | Control method and device for frequency converter heat dissipation device |
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|---|---|---|---|
| CN201910385390.1A CN110145804B (en) | 2019-05-09 | 2019-05-09 | Control method and device for frequency converter heat dissipation device |
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| CN104089346A (en) * | 2014-07-07 | 2014-10-08 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner power component cooling method |
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| CN107228455A (en) * | 2017-06-09 | 2017-10-03 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN109713881A (en) * | 2019-02-01 | 2019-05-03 | 广东美的暖通设备有限公司 | Frequency converter |
| CN210123181U (en) * | 2019-05-09 | 2020-03-03 | 广东美的暖通设备有限公司 | Air conditioner and frequency converter heat dissipation device thereof |
-
2019
- 2019-05-09 CN CN201910385390.1A patent/CN110145804B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566840A (en) * | 2013-10-16 | 2015-04-29 | 海尔集团公司 | Coolant radiating device, air conditioner with coolant radiating device and temperature control method of coolant radiating device |
| CN104089346A (en) * | 2014-07-07 | 2014-10-08 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner power component cooling method |
| CN107228455A (en) * | 2017-06-09 | 2017-10-03 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN109713881A (en) * | 2019-02-01 | 2019-05-03 | 广东美的暖通设备有限公司 | Frequency converter |
| CN210123181U (en) * | 2019-05-09 | 2020-03-03 | 广东美的暖通设备有限公司 | Air conditioner and frequency converter heat dissipation device thereof |
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| Publication number | Publication date |
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| CN110145804B (en) | 2024-04-16 |
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