CN109713881A - Frequency converter - Google Patents
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- CN109713881A CN109713881A CN201910105900.5A CN201910105900A CN109713881A CN 109713881 A CN109713881 A CN 109713881A CN 201910105900 A CN201910105900 A CN 201910105900A CN 109713881 A CN109713881 A CN 109713881A
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- throttling set
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- 239000003507 refrigerant Substances 0.000 claims abstract description 102
- 238000001816 cooling Methods 0.000 claims abstract description 99
- 239000002826 coolant Substances 0.000 claims abstract description 18
- 230000004907 flux Effects 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 16
- 238000009833 condensation Methods 0.000 abstract description 10
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000004378 air conditioning Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 11
- 241001347978 Major minor Species 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The invention discloses a kind of frequency converters, are related to air-conditioning technical field.Frequency converter (100) of the invention is provided with the frequency converter coolant system of refrigerant inlet and refrigerant exit, and the refrigerant pipe for being respectively provided with throttling set and radiator is arranged in parallel in the frequency converter coolant system, with the cold medium flux for flowing through inverter module radiator (21), rectifying module radiator (31) and cooling and dehumidifying radiator (4) for adjusting separately control, to carry out cooling and dehumidifying to inverter module (2), rectification module (3) and cabinet chamber respectively.Frequency converter (100) of the invention not only can effectively solve the heat dissipation problem of power component, the surface condensation that can also solve the problems, such as the component in the cabinet body (1) of frequency converter (100) ensure that the stability and reliability of frequency converter (100).
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular, to a kind of frequency converter.
Background technique
It include rectification module, inverter module, electricity in the frequency conversion tank of the operation of air conditioning systems of current frequency-changeable compressor group
The basic critical component such as anti-module, capacitance module.As the function of operation of air conditioning systems increases, operation of air conditioning systems needs to increase
More and more power devices, the calorific value in frequency conversion tank is also increasing, thus needs effectively cooling to guarantee frequency converter
It works in suitable operating temperature range.
Existing frequency converter cooling means has the modes such as air-cooled, water cooling and refrigerant cooling, air-cooled needs volume in air conditioner
Outer increase radiator fan and air duct, the space occupied is larger and fan noise is also larger, and water cooling is then needed additionally to increase and be supplied water
The heat transfer effect of system, water supply pipe is poor and once occurs to leak the danger that may cause short circuit.Refrigerant is cooling
Good heat dissipation effect can be reached by the phase-change heat-exchange of refrigerant, but condensation problem may have been generated, be unfavorable for frequency converter into
The reliable and stable work of row, and under the conventional refrigerant type of cooling, refrigerant is easy to happen in each branch and shunts uneven feelings
Condition and can only cooling power element the problem of.
Summary of the invention
In view of the above drawbacks of the prior art with deficiency, the present invention provides a kind of novel frequency converters, can not only be effective
Solve the heat dissipation problem of power component, moreover it is possible to distribution is adjusted to the refrigerant of each radiator, avoid the generation of condensation.
To achieve the above object, the present invention provides a kind of novel frequency converter, which includes that cabinet body and setting exist
Inverter module and rectification module in cabinet chamber, the frequency converter further include the frequency converter refrigerant equipped with refrigerant inlet and refrigerant exit
System, the frequency converter coolant system include: inverter module radiator, are installed on the inverter module；Rectification module heat dissipation
Device is installed on the rectification module；Cooling and dehumidifying radiator, for reducing the intracavitary environment temperature of the cabinet and cooling and dehumidifying
The inverter module and the rectification module；And refrigerant pipe, including be arranged in parallel in the refrigerant inlet and the refrigerant
Between outlet and flows through the inverter module refrigerant pipe of the inverter module radiator, flows through the whole of the rectifying module radiator
Flow module refrigerant pipe and the cooling and dehumidifying refrigerant pipe for flowing through the cooling and dehumidifying radiator, the inverter module refrigerant pipe
Corresponding inversion throttling set, whole is respectively equipped on road, the rectification module refrigerant pipe and the cooling and dehumidifying refrigerant pipe
Flow throttling set and cooling and dehumidifying throttling set.
Optionally, the inversion throttling set and the rectification throttling set are separately positioned on the inverter module radiator
With the downstream of the rectifying module radiator, the upper of the cooling and dehumidifying radiator is arranged in the cooling and dehumidifying throttling set
You Duan.
In addition, the inverter module may include the first IGBT module, the second IGBT module and third IGBT module, it is described inverse
Becoming module heat radiator includes corresponding first IGBT module radiator, the second IGBT module radiator and the heat dissipation of third IGBT module
Device, the inverter module refrigerant pipe include the first inverter module refrigerant pipe for flowing through the first IGBT module radiator,
It flows through the second inverter module refrigerant pipe of the second IGBT module radiator, flow through the third IGBT module radiator
Third inverter module refrigerant pipe, the first inverter module refrigerant pipe, the second inverter module refrigerant pipe and described
Third inverter module refrigerant pipe is arranged in parallel and is respectively equipped with the first inversion throttling set, the second inversion throttling set and third
Inversion throttling set.
In addition, the inversion throttling set and/or rectification throttling set can be electric expansion valve, the frequency converter is also wrapped
Include: at least one temperature sensor is configured as detecting the temperature of the inverter module and/or the rectification module；And control
Device processed is electrically connected with the temperature sensor, is configured as according to the temperature control that the temperature sensor detects
Inversion throttling set and/or the rectification throttling set flow through the cold of the inverter module and/or the rectification module to change
Matchmaker's flow.
Further, the controller controls the inversion throttling set according to the temperature that the temperature sensor detects
And/or the rectification throttling set can include: each temperature at least one described temperature sensor is obtained with predeterminated frequency
The temperature that sensor detects；And according to the first of the temperature and pre-set target temperature that are currently obtained from each temperature sensor
Temperature gap and the control of the preceding temperature once obtained and the second temperature difference of pre-set target temperature and the temperature sensor pair
The inversion throttling set or the rectification throttling set answered.
Further, the controller is described inverse according to first temperature gap and second temperature difference control
Variable throttling device or the rectification throttling set can include: determined according to first temperature gap and the second temperature difference
It is input to the umber of pulse of the inversion throttling set or the rectification throttling set；And to the inversion throttling set or described
Rectification throttling set inputs the pulse of the umber of pulse, to adjust opening for the inversion throttling set or the rectification throttling set
Degree.
In one embodiment, the controller is input to the inversion throttling set or institute based on following formula determination
State the umber of pulse of rectification throttling set:
△ EV=Kp × (e1-e2)+Kip×(e1+e2)×TIC
Wherein, △ EV is the umber of pulse, e1For first temperature gap, e2For the second temperature difference, Kp, Kip
And TIC is predetermined coefficient.
Optionally, it may also be formed in the cabinet chamber and flow through the cooling and dehumidifying radiator, the inverter module radiator
With the circulating current channel of the rectifying module radiator, blower is equipped in the circulating current channel.
In addition, the frequency converter may include the multiple partitions being arranged in the cabinet chamber, the partition is mounted on the cabinet
On the inner wall of body and between be separated out cooling and dehumidifying chamber for accommodating the cooling and dehumidifying radiator, for accommodating the inversion mould
The inverter module chamber of block and the inverter module radiator, for accommodating the rectification module and the rectifying module radiator
Rectification module chamber, the circulating current channel cycle is connected to the cooling and dehumidifying chamber and the inverter module chamber and institute
State rectification module chamber.
In addition, the blower may be provided in the cooling and dehumidifying chamber or on the ventilation opening of the cooling and dehumidifying chamber.
Further, the cabinet chamber be separated out between may include for accommodating the capacitance module chamber of capacitor and disconnected for accommodating
The breaker module chamber of road device；Wherein, the breaker module chamber and the cooling and dehumidifying chamber are arranged in the cabinet chamber
Two sides, the inverter module chamber, the capacitance module chamber and the rectification module chamber are placed in the middle and are successively layered up and down
Arrangement；The top port of the cooling and dehumidifying chamber is broken by the inverter module chamber and the capacitance module chamber with described
The top port of road device module chamber is connected to, the lower part port of the breaker module chamber by the rectification module chamber with
The lower part port of the cooling and dehumidifying chamber is connected to.
Further, the frequency converter may include that the master control borad being arranged in the inverter module chamber and setting exist
Reactor and contactor in the rectification module chamber.
Optionally, the cooling and dehumidifying throttling set can be electric expansion valve, capillary or distributor.
New type inverter of the invention is provided with the frequency converter coolant system of refrigerant inlet and refrigerant exit, and in the change
Be arranged in parallel the refrigerant pipe for being respectively provided with throttling set and radiator in frequency device coolant system, with for adjust separately flow through it is inverse
Become the cold medium flux of module heat radiator, rectifying module radiator and cooling and dehumidifying radiator, thus respectively to inverter module, rectification
Module and cabinet chamber carry out cooling and dehumidifying.It not only can effectively solve the heat dissipation problem of power component as a result, moreover it is possible to efficiently solve change
The problem of surface condensation of the intracorporal component of frequency device cabinet, ensure that the stability and reliability of frequency converter.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 is the schematic top plan view according to the frequency converter of a specific embodiment of the invention；
Fig. 2 be Fig. 1 frequency converter from A to visual angle schematic diagram of internal structure；
Fig. 3 be Fig. 1 frequency converter from B to visual angle schematic diagram of internal structure；
Fig. 4 is the principle according to the refrigerant branch of the air-conditioning system where the frequency converter of a specific embodiment of the invention
Figure；
Fig. 5 is the schematic diagram according to the frequency converter coolant system of the frequency converter of a specific embodiment of the invention；
Fig. 6 is the schematic diagram of the frequency converter coolant system of the frequency converter of another specific embodiment according to the present invention；
Fig. 7 is the flow chart that the aperture of throttling set is adjusted according to the Frequency Converter Control of a specific embodiment of the invention.
Description of symbols
100 frequency converter, 1 cabinet body
11 cooling and dehumidifying chamber, 12 inverter module chamber
13 rectification module chamber, 14 capacitance module chamber
15 breaker module chamber, 16 major-minor cabinet spacing board
The 17 secondary cabinets of main cabinet 18
The 171 secondary cabinet back shrouds of main cabinet door plate 181
2 inverter module, 21 inverter module radiator
211 first IGBT module radiator, 212 second IGBT module radiator
213 third IGBT module radiator, 22 inversion throttling set
221 first inversion throttling set, 222 second inversion throttling set
223 third inversion throttling set, 3 rectification module
31 rectifying module radiators 32 rectify throttling set
4 cooling and dehumidifying radiator, 41 cooling and dehumidifying throttling set
5 blower, 6 capacitor
7 breaker, 8 master control borad
9 reactor, 10 contactor
200 condenser, 300 evaporator
400 compressor, 500 mainstream section valve
Specific embodiment
The example of embodiments of the present invention described in detail below, the embodiment is shown in the accompanying drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to is used to explain the present invention, and be should not be understood as to limit of the invention
System.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.Wherein, " preceding " and " rear " is for user is using angle, is " preceding " close to the side of user, far
It is " rear " from the side of user.
The present invention provides a kind of novel frequency converters 100, not only can effectively solve the heat dissipation problem of power component, moreover it is possible to
Distribution is adjusted to the refrigerant of each radiator, avoids the generation of condensation.As shown in fig. 1~fig. 5, which includes
Cabinet body 1 and the inverter module 2 and rectification module 3 being arranged in cabinet chamber, frequency converter 100 further include going out equipped with refrigerant inlet and refrigerant
The frequency converter coolant system of mouth, 100 coolant system of frequency converter includes: inverter module radiator 21, is installed on inverter module 2；
Rectifying module radiator 31 is installed on the rectification module 3；Cooling and dehumidifying radiator 4, for reducing the intracavitary environment temperature of cabinet
Spend simultaneously cooling and dehumidifying inverter module 2 and rectification module 3；And refrigerant pipe, including be arranged in parallel and go out in refrigerant inlet and refrigerant
Between mouthful and flows through the inverter module refrigerant pipe of inverter module radiator 21, flows through the rectification module of rectifying module radiator 31
Refrigerant pipe and the cooling and dehumidifying refrigerant pipe for flowing through cooling and dehumidifying radiator 4, inverter module refrigerant pipe, rectification module refrigerant
Corresponding inversion throttling set 22, rectification throttling set 32 and cooling and dehumidifying are respectively equipped on pipeline and cooling and dehumidifying refrigerant pipe
Throttling set 41.
Since rectification module 3 and inverter module 2 are the important core module and the big device of calorific value of frequency converter 100, need
Cooling is worked normally in time with ensureing, therefore frequency converter 100 of the invention passes through setting inverter module radiator 21 and rectification module
Radiator 31 provides and timely and effectively radiates to the big inverter module 2 of calorific value and rectification module 3, ensure that inverter module 2
It works in suitable operating temperature with rectification module 3, improves the stability and reliability of frequency converter 100.Meanwhile relative to
The cooling frequency converter of conventional refrigerant, frequency converter 100 of the invention also by setting cooling and dehumidifying radiator 4, reduce entire
Environment temperature and humidity in control cabinet and heat dissipation effect is strengthened, efficiently solves the table of the component in frequency-charger cabinet body
The problem of face condensation, and can also radiate for other components in frequency converter 100, reduce the cabinet of entire frequency converter 100
Environment temperature in body 1 improves part life.And in cabinet body 1, frequency converter 100 can not need the valve of usual manner
Body control, so as to reduce the cost of frequency converter 100.
Wherein, frequency converter 100 further includes the frequency converter coolant system equipped with refrigerant inlet and refrigerant exit, frequency converter refrigerant
System includes refrigerant pipe, which includes the inverter module refrigerant pipe for flowing through inverter module radiator 21, flows through
The rectification module refrigerant pipe of rectifying module radiator 31 and the cooling and dehumidifying refrigerant pipe for flowing through cooling and dehumidifying radiator 4.And
And the refrigerant of frequency converter coolant system is from the air-conditioning system where frequency converter 100.As shown in figure 4, cold in air-conditioning system
Matchmaker is compressed into the gas of high temperature and pressure by compressor 400, the liquid of high pressure is condensed into subsequently into condenser 200, then pass through
Two phase gases and liquid that primary throttle valve 500 is transformed into low pressure are crossed, evaporator 300 is finally entered and evaporates the gas for becoming low pressure
After enter back into compressor 400 to complete a circulation cycle.The refrigerant of frequency converter 100 of the invention may be from the air-conditioning
One branch of the outlet setting of the condenser 200 in system, in the branch, from a part of the outlet of condenser 200 out
Cooling and dehumidifying radiator 4, inverter module radiator 21 and the rectifying module radiator 31 that refrigerant enters in frequency converter 100 come to change
100 cooling and dehumidifying of frequency device, then returns the entrance of evaporator 300.
Wherein, the refrigerant inlet of frequency converter coolant system is communicated with the outlet of condenser 200, frequency converter coolant system
Refrigerant exit is communicated with the entrance of evaporator 300.Refrigerant flows into frequency converter coolant system from refrigerant inlet, then passes through inverter module
Refrigerant pipe, rectification module refrigerant pipe and cooling and dehumidifying refrigerant pipe flow separately through inverter module radiator 21, rectification module
Radiator 31 and cooling and dehumidifying radiator 4.As shown in figure 5, inverter module refrigerant pipe, rectification module refrigerant pipe and cooling remove
Wet refrigerant pipe is arranged in parallel between refrigerant inlet and refrigerant exit.
In addition, being respectively equipped with phase on inverter module refrigerant pipe, rectification module refrigerant pipe and cooling and dehumidifying refrigerant pipe
Inversion throttling set 22, rectification throttling set 32 and the cooling and dehumidifying throttling set 41 answered.Inverter module radiator 21, rectification mould
Module radiator 31 and cooling and dehumidifying radiator 4 are connected in parallel, inversion throttling set 22, rectification throttling set 32 and cooling and dehumidifying section
Stream device 41 is for adjusting separately into inverter module radiator 21, rectifying module radiator 31 and cooling and dehumidifying radiator 4
Cold medium flux.
Relative to the conventional refrigerant type of cooling, frequency converter 100 of the invention passes through the throttling set in each parallel branch
The cold medium flux for flowing through corresponding radiator is adjusted, effectively prevents the risk of surface condensation, while ensure that frequency converter 100
In each component work in suitable operating temperature range.
Optionally, as shown in figure 5, inversion throttling set 22 and rectification throttling set 32 are separately positioned on inverter module heat dissipation
The cooling and dehumidifying radiator 4 is arranged in the downstream of device 21 and rectifying module radiator 31, cooling and dehumidifying throttling set 41
Upstream end.The evaporating pressure of cooling and dehumidifying radiator 4 is less than inverter module radiator 21 and rectifying module radiator 31 as a result,
Evaporating pressure.
In addition, as shown in fig. 6, inverter module 2 include the first IGBT module, the second IGBT module and third IGBT module,
Inverter module radiator 21 includes corresponding first IGBT module radiator 211, the second IGBT module radiator 212 and third
IGBT module radiator 213, inverter module refrigerant pipe include the first inverter module for flowing through the first IGBT module radiator 211
Refrigerant pipe, the second inverter module refrigerant pipe for flowing through the second IGBT module radiator 212 flow through the heat dissipation of third IGBT module
The third inverter module refrigerant pipe of device 213, the first inverter module refrigerant pipe, the second inverter module refrigerant pipe and third are inverse
Become module refrigerant pipe and is arranged in parallel and is respectively equipped with the first inversion throttling set 221, the second inversion throttling set 222 and third
Inversion throttling set 223.It is flowed through by the throttling set adjusting in each parallel branch on inverter module refrigerant pipe opposite
The cold medium flux for the radiator answered effectively prevents the surface condensation risk of each IGBT module.
Further, inversion throttling set 22 and/or rectification throttling set 32 are electric expansion valve, and frequency converter 100 also wraps
Include: at least one temperature sensor is configured as the temperature of detection inverter module 2 and/or rectification module 3；And controller (figure
In be not shown), with temperature sensor be electrically connected, be configured as the temperature detected according to temperature sensor control inversion throttling
Device 22 and/or rectification throttling set 32, to change the cold medium flux for flowing through inverter module 2 and/or rectification module 3.
Optionally, inversion throttling set 22 and rectification throttling set 32 are electric expansion valve, and in 3 He of rectification module
Inverter module 2, which respectively corresponds, is equipped with temperature sensor, and temperature sensor is respectively used to detection rectification module 3 and inverter module 2
Internal temperature.Temperature sensor is electrically connected with controller respectively, the rectification mould that controller is detected according to temperature sensor
The corresponding control rectification throttling set 32 of the internal temperature of block 3 is to change the cold medium flux for flowing through rectification module 3, to control rectification
The internal temperature of module 3.Meanwhile the corresponding control of internal temperature of inverter module 2 that controller is detected according to temperature sensor
Inversion throttling set 22 flows through the cold medium flux of inverter module 2 to change, to control the internal temperature of inverter module 2.
It should be noted that inverter module 2 may include the first IGBT module radiator 211, the second IGBT module radiator
212 and third IGBT module radiator 213, therefore can be respectively in the first IGBT module radiator 211, the second IGBT module radiator
212 and third IGBT module radiator 213 on temperature sensor is installed, and temperature sensor electrically connects with controller respectively
It connects, internal temperature the first inversion of corresponding control for the corresponding IGBT module that controller is detected according to temperature sensor throttles
Device 221, the second inversion throttling set 222 and third inversion throttling set 223 flow through the first IGBT module, to change respectively
The cold medium flux of two IGBT modules and third IGBT module, to control the first IGBT module, the second IGBT module and respectively
The internal temperature of three IGBT modules.
Certainly, other than above-mentioned inversion throttling set 22 and rectification throttling set 32 are electric expansion valve, inversion throttling
Device 22 and rectification throttling set 32 can also be not all electric expansion valve, can also be other kinds of throttling set.
Specifically, as shown in fig. 7, controller can control inversion throttling set 22 according to the temperature that temperature sensor detects
And/or rectification throttling set 32 includes: to obtain the temperature that each temperature sensor detects with predeterminated frequency；And according to from every
First temperature gap of temperature and pre-set target temperature that a temperature sensor currently obtains and the preceding temperature once obtained with
The second temperature difference of pre-set target temperature controls inversion throttling set 22 corresponding with the temperature sensor or rectification throttling dress
32 are set, or controls the first inversion throttling set 221 corresponding with the temperature sensor, the second inversion throttling set 222 respectively
With third inversion throttling set 223.
Further, controller can according to the first temperature gap and second temperature difference control inversion throttling set 22 or
Rectification throttling set 32 includes: to be determined to be input to inversion throttling set 22 or whole according to the first temperature gap and second temperature difference
Flow the umber of pulse of throttling set 32；And the arteries and veins of determining umber of pulse is inputted to inversion throttling set 22 or rectification throttling set 32
Punching to adjust inversion throttling set 22 or rectify the aperture of throttling set 32, or adjusts separately the first inversion throttling set
221, the aperture of the second inversion throttling set 222 and third inversion throttling set 223.
Specifically, controller can be input to inversion throttling set 22 based on following formula determination or rectify throttling set 32
Umber of pulse:
△ EV=Kp × (e1-e2)+Kip×(e1+e2)×TIC
Wherein, △ EV is the umber of pulse, e1For first temperature gap, e2For the second temperature difference, Kp, Kip
And TIC is predetermined coefficient, numerical value can be equal or unequal.
That is the aperture adjustment control of such as the first inversion throttling set 221 is as follows, and the preset temperature of the first IGBT module is
T, predeterminated frequency t1Second/time, temperature sensor is T1 in the internal temperature that t moment detects the first IGBT module, corresponds to first
Inversion throttling set 221 is pls1 in the aperture of t moment, in (t+t1) moment detect the first IGBT module internal temperature be
T2, i.e. the first temperature gap e1For T2-T, second temperature difference e2For T1-T, then the arteries and veins of the first inversion throttling set 221 is input to
Rush number
△ EV1=Kp × (e1-e2)+Kip×(e1+e2)×TIC
=Kp × ((T2-T)-(T1-T))+Kip × ((T2-T)+(T1
-T))×TIC
Therefore the first inversion throttling set 221 is in (t+t1) moment aperture regulation to (pls1+ △ EV1).
Similarly, inversion throttling set 22 or the second inversion throttling set 222 or third inversion throttling set 223 are opened
The aperture adjustment control of the first inversion throttling set 221 of degree adjustment control also described above is the same.
Further, the preset temperature of the first IGBT module, the second IGBT module and third IGBT module may be configured as phase
Same numerical value, thus can pass through the first inversion throttling set 221, the second inversion throttling set 222 and third inversion throttling set
The internal temperature of first IGBT module, the second IGBT module and third IGBT module is adjusted to close to phase by 223 aperture regulation
Deng numerical value improve the service life of inverter module 2 thus electric current of the balance beneficial by each IGBT module.
In addition, as follows for the aperture adjustment control for rectifying throttling set 32, the preset temperature of rectification module 3 is T3, in advance
If frequency is t2Second/time, temperature sensor is T4 in the hot face temperature of t moment detection rectification module 3, corresponding rectification throttling
Device 32 is pls2 in the aperture of t moment, in (t+t2) moment detection rectification module 3 hot face temperature be T5, i.e., first
Temperature gap e1For T5-T3, second temperature difference e2For T4-T3, then the umber of pulse of rectification throttling set 32 is input to
△ EV2=Kp × (e1-e2)+Kip×(e1+e2)×TIC
=Kp × ((T5-T3)-(T4-T3))+Kip × ((T5-T3)+(T4
-T3))×TIC
Therefore rectification throttling set 32 is in (t+t2) moment aperture regulation to (pls2+ △ EV2).
It is dissipated in addition, may also be formed in cabinet chamber and flow through cooling and dehumidifying radiator 4, inverter module radiator 21 and rectification module
The circulating current channel of hot device 31 is equipped with blower 5 in circulating current channel, can accelerate the circulation of the circulating current in cabinet body 1.
Optionally, as shown in Fig. 2, frequency converter 100 may include the multiple partitions being arranged in cabinet chamber, partition is mounted on cabinet body
On 1 inner wall and between be separated out cooling and dehumidifying chamber 11 for accommodating cooling and dehumidifying radiator 4, for accommodating 2 and of inverter module
The inverter module chamber 12 of inverter module radiator 21, the rectification mould for accommodating rectification module 3 and rectifying module radiator 31
Block chamber 13, circulating current channel cycle are connected to cooling and dehumidifying chamber 11 and inverter module chamber 12 and rectification module chamber 13.
The different component separate chambers of calorific value can be not only arranged as a result, avoid mutual heat influence and electric effect,
Corresponding ventilation port can be also provided on partition to strengthen to form circulating current channel between different chambers
Heat dissipation effect in entire cabinet body 1.
Specifically, as shown in Fig. 2, blower 5 is arranged on the ventilation opening of cooling and dehumidifying chamber 11, into cooling and dehumidifying chamber
The air of 11 ventilation opening blows to cooling and dehumidifying radiator 4 by spinning up for blower 5, enhances cooling and dehumidifying radiator 4
Heat dissipation effect on moisture extraction.Certainly, blower 5 may also be arranged on the other positions in cooling and dehumidifying chamber 11, as blower 5 it is mountable
Between the downstream position and partition of cooling and dehumidifying radiator 4.
In addition, cabinet chamber be separated out between may include for accommodating the capacitance module chamber 14 of capacitor 6 and for accommodating breaker 7
Breaker module chamber 15；Wherein, breaker module chamber 15 and cooling and dehumidifying chamber 11 are arranged in the two sides of cabinet chamber, inversion
Module chamber 12, capacitance module chamber 14 and rectification module chamber 13 be placed in the middle and successively layered arrangement up and down；Cooling and dehumidifying chamber
11 top port is connected by the top port of inverter module chamber 12 and capacitance module chamber 14 and breaker module chamber 15
Logical, the lower part port of breaker module chamber 15 is connected by the lower part port of rectification module chamber 13 and cooling and dehumidifying chamber 11
It is logical.
As shown in Fig. 2, air by blower 5 enter cooling and dehumidifying chamber 11 after by cooling and dehumidifying radiator 4 carry out it is scattered
Heat dehumidifying, then blows to inverter module chamber 12 and capacitance module chamber by the top port of cooling and dehumidifying chamber 11 respectively
14, then be blown into breaker module chamber 15 from the top port of inverter module chamber 12 and capacitance module chamber 14 respectively, most
Rectification module chamber 13 is flowed into from the lower part port of breaker module chamber 15 afterwards.Thus air circulation can be formed in cabinet body 1
The circulating current channel of fast speed.
In addition, frequency converter 100 may include the master control borad 8 being arranged in inverter module chamber 12 and be arranged in rectification module
Reactor 9 and contactor 10 in chamber 13.As shown in Fig. 2, air blows to inversion from the top port of cooling and dehumidifying chamber 11
It, can be right respectively when module chamber 12 and when air flows into rectification module chamber 13 from the lower part port of breaker module chamber 15
Master control borad 8, reactor 9 and contactor 10 carry out heat dissipation dehumidifying.
In general control cabinet, due to needing to radiate to reactor 9, so the cabinet body 1 of frequency converter 100 cannot seal, wind
Outside air is blowed to reactor 9 to take away the heat of reactor 9 by machine 5, but in the present invention, cooling except radiator 4 due to having
Presence, the fever of reactor 9 can take away by refrigerant, cabinet body 1 can thus be made into external seal case, to improve protection etc.
Grade and it is dust-proof.
Optionally, cooling and dehumidifying throttling set 41 is electric expansion valve, capillary or distributor, can be saved by refrigerant
Stream reduces the evaporating temperature of cooling and dehumidifying evaporator 4, improves heat-sinking capability and dehumidifying effect.
In a specific embodiment, as shown in FIG. 1 to 3, cabinet body 1 may include between outer housing and built-in major-minor cabinet
Partition 16, major-minor cabinet spacing board 16 and outer housing limit the main cabinet 17 positioned at frequency converter front and the secondary cabinet 18 positioned at rear portion,
Inverter module 2 and rectification module 3 are located in main cabinet 17 and are mounted in the front side plate face of major-minor cabinet spacing board 16, and inverter module dissipates
Hot device 21 and rectifying module radiator 31 be located in the secondary cabinet 18 and along the longitudinal direction respectively with inverter module 2 and rectification module
3 contrapositions are mounted in the rear side plate face of major-minor cabinet spacing board 16.
Wherein, cabinet body 1 is limited to main cabinet positioned at frequency converter front by the way that major-minor cabinet spacing board 16 is arranged in cabinet body 1
17 and the secondary cabinet 18 positioned at rear portion, and inverter module radiator 21 and rectifying module radiator 31 are arranged in secondary cabinet 18,
It can prevent because of the too low generation condensation of surface temperature of inverter module radiator 21 and rectifying module radiator 31 or because cold
Matchmaker's leakage, influences the stability and reliability of the component in cabinet body 1.Meanwhile when the component in radiator or cabinet body 1 needs
When being safeguarded, mutual interference can be reduced, convenient for the operation at scene.
Frequency converter 100 of the invention by being provided with the frequency converter coolant system of refrigerant inlet and refrigerant exit, and
It is arranged in parallel the refrigerant pipe for being respectively provided with throttling set and radiator in the frequency converter coolant system, for adjusting separately stream
Cold medium flux through inverter module radiator 21, rectifying module radiator 31 and cooling and dehumidifying radiator 4, thus respectively to inversion
Module 2, rectification module 3 and cabinet chamber carry out cooling and dehumidifying.It not only can effectively solve the heat dissipation problem of power component as a result, moreover it is possible to
The surface condensation for solving the problems, such as the component in the cabinet body 1 of frequency converter 100, ensure that the stability of frequency converter 100
And reliability.And cooling and dehumidifying radiator 4 reduces environment temperature in entire control cabinet and humidity and strengthens heat dissipation
Effect, while radiating for other components in frequency converter 100, improve part life.Simultaneously by more in cabinet chamber
Block partition limits multiple chambers, and the heat for avoiding component mutual influences and electric effect, and is provided on partition
Corresponding ventilation port strengthens the heat dissipation effect in entire cabinet body 1 to form circulating current channel between different chambers
Fruit, and the circulation for the circulating current that blower 5 can be accelerated in cabinet body 1 is set, further enhance the effect on moisture extraction that radiates in cabinet body 1.
Cabinet body 1 can also between be separated out main cabinet 17 and secondary cabinet 18, further ensure the stability and reliability of frequency converter 100, while conveniently
The maintenance of installation operation and later period.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
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 or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, 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.
Although embodiments of the present invention have been shown and described above, it is to be understood that above embodiment is
Illustratively, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be right
Above embodiment is changed, modifies, replacement and variant.
Claims (13)
1. a kind of frequency converter, including cabinet body (1) and the inverter module (2) and rectification module (3) that are arranged in cabinet chamber, feature exists
In the frequency converter (100) further includes the frequency converter coolant system equipped with refrigerant inlet and refrigerant exit, the frequency converter
(100) coolant system includes:
Inverter module radiator (21) is installed on the inverter module (2)；
Rectifying module radiator (31) is installed on the rectification module (3)；
Cooling and dehumidifying radiator (4), for reducing the intracavitary environment temperature of the cabinet and inverter module (2) described in cooling and dehumidifying and
The rectification module (3)；And
Refrigerant pipe, including be arranged in parallel between the refrigerant inlet and the refrigerant exit and flow through the inverter module and dissipate
It the inverter module refrigerant pipe of hot device (21), the rectification module refrigerant pipe for flowing through the rectifying module radiator (31) and flows through
The cooling and dehumidifying refrigerant pipe of the cooling and dehumidifying radiator (4), the inverter module refrigerant pipe, the rectification module refrigerant
Be respectively equipped on pipeline and the cooling and dehumidifying refrigerant pipe corresponding inversion throttling set (22), rectification throttling set (32) and
Cooling and dehumidifying throttling set (41).
2. frequency converter according to claim 1, which is characterized in that the inversion throttling set (22) and rectification throttling
Device (32) is separately positioned on the downstream of the inverter module radiator (21) and the rectifying module radiator (31), described
Cooling and dehumidifying throttling set (41) is arranged in the upstream end of the cooling and dehumidifying radiator (4).
3. frequency converter according to claim 1, which is characterized in that the inverter module (2) includes the first IGBT module, the
Two IGBT modules and third IGBT module, the inverter module radiator (21) include corresponding first IGBT module radiator
(211), the second IGBT module radiator (212) and third IGBT module radiator (213), the inverter module refrigerant pipe packet
It includes and flows through the first inverter module refrigerant pipe of the first IGBT module radiator (211), flows through second IGBT module
Second inverter module refrigerant pipe of radiator (212), the third inversion mould for flowing through the third IGBT module radiator (213)
Block refrigerant pipe, the first inverter module refrigerant pipe, the second inverter module refrigerant pipe and the third inversion mould
Block refrigerant pipe is arranged in parallel and is respectively equipped with the first inversion throttling set (221), the second inversion throttling set (222) and third
Inversion throttling set (223).
4. frequency converter according to any one of claims 1 to 3, which is characterized in that the inversion throttling set (22)
And/or the rectification throttling set (32) is electric expansion valve, the frequency converter (100) further include:
At least one temperature sensor is configured as detecting the temperature of the inverter module (2) and/or the rectification module (3)；
And
Controller is electrically connected with the temperature sensor, is configured as the temperature control detected according to the temperature sensor
Make the inversion throttling set (22) and/or the rectification throttling set (32), with change flow through the inverter module (2) and/
Or the cold medium flux of the rectification module (3).
5. frequency converter according to claim 4, which is characterized in that the controller is detected according to the temperature sensor
Temperature control the inversion throttling set (22) and/or the rectification throttling set (32) and include:
The temperature that each temperature sensor at least one described temperature sensor detects is obtained with predeterminated frequency；And
According to the first temperature gap of the temperature and pre-set target temperature currently obtained from each temperature sensor and preceding primary
The temperature of acquisition and the second temperature difference control of the pre-set target temperature inversion throttling corresponding with the temperature sensor fill
Set (22) or the rectification throttling set (32).
6. frequency converter according to claim 5, which is characterized in that the controller is according to first temperature gap and institute
It states the second temperature difference control inversion throttling set (22) or the rectification throttling set (32) includes:
The inversion throttling set (22) or institute are input to according to first temperature gap and second temperature difference determination
State the umber of pulse of rectification throttling set (32)；And
The pulse of the umber of pulse is inputted, to the inversion throttling set (22) or rectification throttling set (32) to adjust
State the aperture of inversion throttling set (22) or rectification throttling set (32).
7. frequency converter according to claim 6, which is characterized in that the controller is input to institute based on following formula determination
State the umber of pulse of inversion throttling set (22) or rectification throttling set (32):
△ EV=Kp × (e1-e2)+Kip×(e1+e2)×TIC
Wherein, △ EV is the umber of pulse, e1For first temperature gap, e2For the second temperature difference, Kp, Kip and
TIC is predetermined coefficient.
8. frequency converter according to any one of claims 1 to 3, which is characterized in that be also formed with stream in the cabinet chamber
Circulation through the cooling and dehumidifying radiator (4), the inverter module radiator (21) and the rectifying module radiator (31)
Airflow channel is equipped with blower (5) in the circulating current channel.
9. frequency converter according to claim 8, which is characterized in that the frequency converter (100) includes being arranged in the cabinet chamber
In multiple partitions, the partition be mounted on the inner wall of the cabinet body (1) and between be separated out for accommodate the cooling and dehumidifying dissipate
The cooling and dehumidifying chamber (11) of hot device (4), for accommodating the inverse of the inverter module (2) and the inverter module radiator (21)
Become module chamber (12), the rectification module chamber for accommodating the rectification module (3) and the rectifying module radiator (31)
(13), the circulating current channel cycle is connected to the cooling and dehumidifying chamber (11) and the inverter module chamber (12) and described
Rectification module chamber (13).
10. frequency converter according to claim 9, which is characterized in that the blower (5) is arranged in the cooling and dehumidifying chamber
(11) in or on the ventilation opening of the cooling and dehumidifying chamber (11).
11. frequency converter according to claim 9, which is characterized in that the cabinet chamber was separated out between including is used to accommodate capacitor
(6) capacitance module chamber (14) and the breaker module chamber (15) for accommodating breaker (7)；
Wherein, the breaker module chamber (15) and the cooling and dehumidifying chamber (11) are arranged in the two sides of the cabinet chamber, institute
It states inverter module chamber (12), the capacitance module chamber (14) and the rectification module chamber (13) between two parties and successively divides up and down
Layer arrangement；
The top port of the cooling and dehumidifying chamber (11) passes through the inverter module chamber (12) and the capacitance module chamber
(14) it is connected to the top port of the breaker module chamber (15), the lower part port of the breaker module chamber (15) is logical
The rectification module chamber (13) is crossed to be connected to the lower part port of the cooling and dehumidifying chamber (11).
12. frequency converter according to claim 11, which is characterized in that the frequency converter (100) includes being arranged described inverse
The master control borad (8) become in module chamber (12) and the reactor (9) being arranged in the rectification module chamber (13) and contact
Device (10).
13. frequency converter according to claim 1, which is characterized in that the cooling and dehumidifying throttling set (41) is that electronics is swollen
Swollen valve, capillary or distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105900.5A CN109713881A (en) | 2019-02-01 | 2019-02-01 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105900.5A CN109713881A (en) | 2019-02-01 | 2019-02-01 | Frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109713881A true CN109713881A (en) | 2019-05-03 |
Family
ID=66264250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910105900.5A Pending CN109713881A (en) | 2019-02-01 | 2019-02-01 | Frequency converter |
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| Country | Link |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110145804A (en) * | 2019-05-09 | 2019-08-20 | 广东美的暖通设备有限公司 | The control method and device of frequency converter cooling device |
| CN110167320A (en) * | 2019-05-24 | 2019-08-23 | 广东美的暖通设备有限公司 | Frequency converter and its control method and device |
| CN110160279A (en) * | 2019-05-24 | 2019-08-23 | 广东美的暖通设备有限公司 | Frequency changing refrigeration system and water cooler with it |
| CN110677014A (en) * | 2019-09-30 | 2020-01-10 | 珠海格力电器股份有限公司 | Cooling system and method of frequency converter capable of uniformly cooling frequency converter and air conditioning equipment |
| CN112556227A (en) * | 2020-12-22 | 2021-03-26 | 珠海格力电器股份有限公司 | Air conditioning unit, frequency converter cooling system and control method thereof |
| CN114269118A (en) * | 2021-12-22 | 2022-04-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioner heat dissipation system, photovoltaic air conditioner and control method of photovoltaic air conditioner |
| CN115151108A (en) * | 2022-07-15 | 2022-10-04 | 珠海格力电器股份有限公司 | Radiator device, radiator group, variable frequency compressor, air conditioning equipment and method |
| WO2024007685A1 (en) * | 2022-07-08 | 2024-01-11 | 珠海格力电器股份有限公司 | Frequency converter cooling device, cooling method and air conditioning apparatus |
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| CN114269118A (en) * | 2021-12-22 | 2022-04-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioner heat dissipation system, photovoltaic air conditioner and control method of photovoltaic air conditioner |
| WO2024007685A1 (en) * | 2022-07-08 | 2024-01-11 | 珠海格力电器股份有限公司 | Frequency converter cooling device, cooling method and air conditioning apparatus |
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