CN212393124U - Temperature adjusting system for frequency converter machine room - Google Patents
Temperature adjusting system for frequency converter machine room Download PDFInfo
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- CN212393124U CN212393124U CN202021073077.9U CN202021073077U CN212393124U CN 212393124 U CN212393124 U CN 212393124U CN 202021073077 U CN202021073077 U CN 202021073077U CN 212393124 U CN212393124 U CN 212393124U
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Abstract
The utility model relates to a temperature regulating system of a frequency converter machine room, which comprises a machine room, wherein a frequency conversion cabinet is arranged in the machine room, a cavity in the machine room is a closed space, a frequency converter is arranged in the frequency conversion cabinet, an air vent communicated with an inner cavity of the machine room is arranged on the side wall of the frequency conversion cabinet, and a cold air assembly is arranged on the frequency conversion cabinet; the indoor unit is arranged in the machine room, the outdoor unit is arranged outside the machine room, and the heat exchanger is arranged between the indoor unit and the outdoor unit and used for transferring heat between the indoor unit and the outdoor unit. In the cold wind subassembly cooperation ventilation air discharges the computer lab with the internal hot-air of cabinet, the lower air of temperature enters into the cabinet body in the computer lab, makes the heat that the converter produced can transmit away fast, along with the work of indoor set and off-premises station, during the heat in the air in the computer lab is transmitted outdoor air, and can not contact between the indoor air and the outdoor air, can keep dry in the computer lab, reduces the phenomenon that the dew condensation appears on the frequency conversion cabinet.
Description
Technical Field
The utility model belongs to the technical field of the technique of converter and specifically relates to a converter computer lab temperature regulation system is related to.
Background
The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, and is a core component of a frequency conversion speed regulation system. The core circuit module of the frequency converter has the characteristics of high integration level, high frequency, high voltage, high speed and the like, so that the core circuit module of the frequency converter generates heat seriously during working. The normal working temperature of the frequency converter is between-10 ℃ and +50 ℃, and once the normal working temperature exceeds the range, the performance of the electronic components is reduced. The long-term work of converter is under super normal temperature, can influence the life of converter, causes serious consequences such as explosion, burns out even. Thus, the frequency converter needs a good heat dissipation device as a guarantee for its normal operation
At present, chinese patent with publication number CN207661871U discloses a high-voltage inverter computer lab temperature and negative pressure governing system, including the computer lab, its characterized in that, the computer lab comprises wall a, wall b, wall c and wall d, wall c is provided with first electric cabinet, wall d is provided with the second electric cabinet, and first electric cabinet is provided with first turbofan and first air outlet, first air outlet has cup jointed first tuber pipe, the one end that first air outlet was kept away from to first tuber pipe has cup jointed the right angled tuber pipe, first tuber pipe one end has cup jointed second tuber pipe and third tuber pipe to the right angled tuber pipe, the one end that the right angled tuber pipe was kept away from to the third tuber pipe has cup jointed the second air outlet, the one end that the right angled tuber pipe was kept away from to the second tuber pipe has cup jointed the louvre, the louvre is provided with the motorised valve. The wall b is provided with an air inlet, and an air blower is arranged inside the air inlet.
The above prior art solutions have the following drawbacks: the air in the machine room is communicated with the outside through the air inlet, and when the outside air is wet, the air in the machine room can be wet quickly. When the temperature in the first electric cabinet changes greatly, for example, a frequency converter in the first electric cabinet is shut down, the phenomenon of dew condensation easily occurs in the first electric cabinet, and the condensate water generated in serious cases can cause short circuit of a circuit and damage equipment.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide a converter computer lab temperature regulation system, it has the advantage that reduces the variable frequency cabinet and appear the dewfall.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a temperature adjusting system of a frequency converter machine room comprises a machine room, wherein a frequency converter cabinet is arranged in the machine room, a cavity in the machine room is a closed space, a frequency converter is arranged in the frequency converter cabinet, a vent hole communicated with an inner cavity of the machine room is formed in the side wall of the frequency converter cabinet, a cold air assembly is arranged on the frequency converter cabinet and is used for transferring air between the inside of the frequency converter cabinet and the cavity of the machine room; the indoor unit is arranged in the machine room, the outdoor unit is arranged outside the machine room, and the heat exchanger is arranged between the indoor unit and the outdoor unit and used for transferring heat between the indoor unit and the outdoor unit.
Through adopting above-mentioned technical scheme, when converter work is generated heat, the hot-air discharge computer lab in with the inverter cabinet of cold wind subassembly cooperation ventilation air, the lower air of temperature enters into the inverter cabinet in the computer lab, the heat that makes the converter produce can transmit away fast, the temperature of converter self obtains control, along with the work of indoor set and off-premises station, the heat in the air in the computer lab is transmitted in the outdoor air, and can not contact between the indoor outer air, can keep dry in the computer lab, reduce the phenomenon that the dewfall appears on the inverter cabinet.
The present invention may be further configured in a preferred embodiment as: the cold wind subassembly includes first fan, second fan and temperature monitoring device, the air outlet of first fan and second fan all faces the converter, temperature monitoring device includes temperature detection module, first the control unit and second the control unit, temperature detection module is used for detecting the temperature in the frequency conversion cabinet and exports corresponding temperature detect signal, first the control unit is coupled in temperature detection module and opens and close according to the opening and close of temperature detect signal control first fan, second the control unit is coupled in temperature detection module and opens and close according to the temperature detect signal control second fan in order to receive the temperature detect signal.
Through adopting above-mentioned technical scheme, first control unit and second control unit start under the different temperatures, when the temperature is lower in the inverter cabinet, by first fan or second fan work alone, if the heat that the converter produced can't in time discharge for the temperature in the inverter cabinet continues to rise, then first fan and second fan work together for circulation of air speed strengthens the radiating effect.
The present invention may be further configured in a preferred embodiment as: the first control unit comprises a first reference module, a first comparison module, a first control module and a first execution module, wherein the first reference module is used for providing a first reference signal corresponding to a first early warning temperature, the first comparison module is coupled to the temperature detection module to receive the temperature detection signal and output a corresponding first comparison signal, the first control module is coupled to the first comparison module to receive the first comparison signal and output a corresponding first control signal, and the first execution module is coupled to the first control module to receive the first control signal and respond to the first control signal to control the start of the first fan; the second control unit comprises a second reference module, a second comparison module, a second control module and a second execution module, wherein the second reference module is used for providing a second reference signal corresponding to a second early warning temperature, the second comparison module is coupled to the temperature detection module to receive the temperature detection signal and output a corresponding second comparison signal, the second control module is coupled to the second comparison module to receive the second comparison signal and output a corresponding second control signal, and the second execution module is coupled to the second control module to receive the second control signal and respond to the second control signal to control the start of the second fan.
By adopting the technical scheme, the set first early warning temperature is lower than the second early warning temperature, when the temperature in the frequency conversion cabinet is lower than the first early warning temperature, the first fan and the second fan do not work, when the temperature in the frequency conversion cabinet exceeds the first early warning temperature, the first control unit controls the first fan to start, and when the temperature in the frequency conversion cabinet continues to rise and exceeds the second early warning temperature, the second control unit controls the second fan to start, the first fan and the second fan are used according to actual conditions, and the energy consumption is effectively controlled.
The present invention may be further configured in a preferred embodiment as: the temperature monitoring device also comprises a third execution module which is coupled with the first control module to receive the first control signal and respond to the first control signal to control the opening and closing of the indoor unit and the outdoor unit.
Through adopting above-mentioned technical scheme, when first control unit began to control the operation of first fan, began to carry out air exchange between frequency conversion cabinet and the computer lab, third execution module simultaneous control indoor set and off-premises station work, and the heat transfer that will enter into the hot-air in the computer lab is outdoor, makes indoor heat in time give off, is favorable to the control of temperature in the frequency conversion cabinet, further controls the energy consumption.
The present invention may be further configured in a preferred embodiment as: the indoor unit is provided with an air inlet pipe and an air outlet pipe, the end part of the air inlet pipe, which is far away from the indoor unit, is positioned at the top of the machine room, and the end part of the air outlet pipe, which is far away from the indoor unit, is positioned at the bottom of the machine room.
Through adopting above-mentioned technical scheme, intake pipe and outlet duct distance are great, can promote the air flow in the computer lab to utilize the characteristics that hot-air rises and cold air sinks, make the intake pipe can inhale hot-air always, avoid the air that the indoor set was handled very fast to be inhaled again, improve the cooling ability to indoor temperature.
The present invention may be further configured in a preferred embodiment as: the machine room is internally provided with a storage disc, and a drying agent is placed on the storage disc.
Through adopting above-mentioned technical scheme, the drier can absorb the moisture in the air, makes the air keep dry, reduces the probability that the dewfall phenomenon takes place, when the drier needs to be changed, can directly change whole thing dish of putting, and easy operation is convenient, reduces the operating time of staff in the computer lab.
The present invention may be further configured in a preferred embodiment as: the object placing plate is close to the air outlet pipe, and the end part of the air outlet pipe, which is far away from the indoor unit, faces the drying agent.
By adopting the technical scheme, most of indoor air is blown to the drying agent by the indoor unit in sequence, so that the drying agent can adsorb moisture in most of indoor air, the adsorption effect is improved, and the probability of condensation is further reduced.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the indoor air is kept dry by arranging the closed machine room and the drying agent, so that the probability of condensation is reduced;
2. by arranging the indoor unit, the outdoor unit and the heat exchanger, the heat transfer between the indoor and the outdoor is realized, the transfer of indoor and outdoor air is avoided, the moisture entering the indoor is reduced, and the probability of condensation is further reduced;
3. the temperature monitoring device is arranged to control the starting of the first fan, the second fan, the indoor unit and the outdoor unit, and the waste of energy is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure in the embodiment;
FIG. 2 is a schematic circuit diagram of a temperature monitoring device according to an embodiment.
In the figure, 1, a machine room; 11. a door; 2. a frequency conversion cabinet; 21. a vent hole; 22. a frequency converter; 3. a first fan; 4. a second fan; 5. a temperature monitoring device; 51. a temperature detection module; 52. a first control unit; 521. a first reference module; 522. a first comparison module; 523. a first control module; 524. a first execution module; 525. a third execution module; 53. a second control unit; 531. a second reference module; 532. a second comparison module; 533. a second control module; 534. a second execution module; 6. an indoor unit; 61. an air inlet pipe; 62. an air outlet pipe; 7. an outdoor unit; 8. a heat exchanger; 9. placing a tray; 91. a desiccant.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a converter computer lab temperature regulation system, including computer lab 1, set up the passageway with external intercommunication on the lateral wall of computer lab 1, install on the passageway and seal the door. When the closing door is closed, the passage can be blocked, so that the cavity in the machine room 1 is a closed space. Frequency conversion cabinet 2 and object placing plate 9 have been placed on the ground of computer lab 1, place a plurality of desiccants 91 on the object placing plate 9, and desiccants 91 are bamboo charcoal package, and bamboo charcoal package not only can absorb the moisture in the air, can also air-purifying, makes the air in the computer lab 1 that is in confined state for a long time fresher more.
Referring to fig. 1, an indoor unit 6 is installed on an inner side of one wall of a machine room 1, an outdoor unit 7 is installed on an outer side of the one wall of the machine room 1, and a heat exchanger 8 is connected between the indoor unit 6 and the outdoor unit 7. An air inlet pipe 61 and an air outlet pipe 62 are installed on the indoor unit 6, the air inlet pipe 61 is laid at the top of the machine room 1, one end of the air collecting pipe, far away from the indoor unit 6, faces the frequency conversion cabinet 2, the main body of the air outlet pipe 62 is buried underground in the machine room 1, and the end, far away from the indoor unit 6, of the air outlet pipe 62 penetrates out of the ground and faces the drying agent 91. The indoor unit 6 absorbs heat of indoor air, the heat exchanger 8 transfers the heat absorbed by the indoor unit 6 to the outdoor unit 7, and the outdoor unit 7 transfers the heat to the outside air.
Referring to fig. 1, the frequency conversion cabinet 2 is supported on the ground by the support legs, the first fan 3 is installed at the top of the frequency conversion cabinet 2, and the second fan 4 is installed at the bottom of the frequency conversion cabinet 2. Install converter 22 and temperature monitoring device 5 on the lateral wall of frequency conversion cabinet 2, the air outlet of first fan 3 and second fan 4 all faces converter 22. And the side wall of the frequency conversion cabinet 2 adjacent to the frequency converter 22 is provided with a vent hole 21 communicated with the inner cavity of the machine room 1.
Referring to fig. 2, the temperature monitoring device 5 includes a temperature detection module 51, a first control unit 52, and a second control unit 53. The first warning temperature and the second warning temperature are preset according to the type of the frequency converter 22, and in this embodiment, the first warning temperature is 30 ℃ and the second warning temperature is 40 ℃. When the temperature in the cabinet is higher than 30 ℃, the temperature detection module 51 enables the first control unit 52 to operate, the first control unit 52 controls the first fan 3 to start, and simultaneously, the indoor unit 6 and the outdoor unit 7 start to operate. When the temperature in the cabinet body is higher than 40 ℃, the temperature detection module 51 enables the second control unit 53 to work, and the second control unit 53 controls the second fan 4 to start.
Referring to fig. 2, the temperature detection module 51 includes a thermistor RT and a resistor R1. The thermistor RT is a negative temperature coefficient thermistor.
One end of the thermistor RT is coupled to the power VCC, the other end of the thermistor RT is coupled to the resistor R1, and the other end of the resistor R1 is grounded. A temperature detection signal is output from a connection point between the thermistor RT and the resistor R1.
When the thermistor RT is heated to cause the resistance to become low, the voltage divided by the resistor R1 becomes high, and the temperature detection signal is at a high level; otherwise, the temperature detection signal is at a low level.
Referring to fig. 2, the first control unit 52 includes a first reference module 521, a first comparison module 522, the first control module 523, the first execution module 524, and the third execution module 525, where the first reference module 521 is configured to provide a first reference signal corresponding to a first warning temperature, the first comparison module 522 is coupled to the temperature detection module 51 to receive the temperature detection signal and output a corresponding first comparison signal, the first control module 523 is coupled to the first comparison module 522 to receive the first comparison signal and output a corresponding first control signal, the first execution module 524 is coupled to the first control module 523 to receive the first control signal and respond to the first control signal to control the start of the first fan 3, and the third execution module 525 is coupled to the first control module 523 to receive the first control signal and respond to the first control signal to control the on/off of the indoor unit 6 and the outdoor unit 7.
The first reference module 521 includes a resistor R2, a resistor R3, and a resistor R4. The first comparison module 522 is a comparator N1. Comparator N1 is model LM 311. The first control module 523 is a triode Q1, and the triode Q1 is an NPN type triode with a model 2SC 4019. The first executive module 524 is an intermediate relay KM1, and the third executive module 525 is an intermediate relay KM 3.
One end of the resistor R4 is coupled to the power source VCC, the other end of the resistor R4 is coupled to one end of the resistor R3, the other end of the resistor R3 is coupled to the inverted input terminal of the comparator N1, one end of the resistor R2 is coupled to the connection point between the resistor R1 and the resistor R3, and the other end of the resistor R2 is grounded. The homodromous input end of the comparator N1 is coupled to a connection point between the thermistor RT and the resistor R1, the output end of the comparator N1 is coupled to the base electrode of the triode Q1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is coupled to one end of the intermediate relay KM1, the other end of the intermediate relay KM1 is coupled to one end of the intermediate relay KM2, and the other end of the intermediate relay KM3 is coupled to a power supply VCC. The normally open contact KM1-1 of the intermediate relay KM1 is connected in series in the power supply loop of the first fan 3, and the normally open contact KM3-1 of the intermediate relay KM3 is connected in series in the power supply loop of the indoor unit 6 and the outdoor unit 7.
When the temperature detection signal received by the same-direction input end of the comparator N1 is greater than the first reference signal received by the reverse-direction input end of the comparator N1, the comparator N1 outputs a high-level signal, the triode Q1 is conducted, the intermediate relay KM1 and the intermediate relay KM3 are electrified to work, the normally open contact KM1-1 of the intermediate relay KM1 is closed, the first fan 3 works, the normally open contact KM3-1 of the intermediate relay KM3 is closed, and the indoor unit 6 and the outdoor unit 7 work; on the contrary, the first fan 3, the indoor unit 6 and the outdoor unit 7 do not work.
Referring to fig. 2, the second control unit 53 includes a second reference module 531, a second comparison module 532, a second control module 533 and a second execution module 534, the second reference module 531 is configured to provide a second reference signal corresponding to the second warning temperature, the second comparison module 532 is coupled to the temperature detection module 51 to receive the temperature detection signal and output a corresponding second comparison signal, the second control module 533 is coupled to the second comparison module 532 to receive the second comparison signal and output a corresponding second control signal, and the second execution module 534 is coupled to the second control module 533 to receive the second control signal and respond to the second control signal to control the start of the second fan 4.
The second reference module 531 includes a resistor R5, a resistor R6, and a resistor R7. The second comparison module 532 is a comparator N2. Comparator N2 is model LM 311. The second control module 533 is a triode Q2, and the transistor Q2 is an NPN transistor and has a model number of 2SC 4019. The second execution module 534 is an intermediate relay KM 2.
One end of the resistor R7 is coupled to the power source VCC, the other end of the resistor R7 is coupled to one end of the resistor R6, the other end of the resistor R6 is coupled to the inverted input terminal of the comparator N2, one end of the resistor R5 is coupled to the connection point between the resistor R6 and the resistor R7, and the other end of the resistor R5 is grounded. The homodromous input end of the comparator N2 is coupled to a connection point between the thermistor RT and the resistor R1, the output end of the comparator N2 is coupled to the base electrode of the triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is coupled to one end of the intermediate relay KM2, the other end of the intermediate relay KM2 is coupled to a power supply VCC, and the normally open contact KM2-1 of the intermediate relay KM2 is connected in series in a power supply loop of the second fan 4.
When the temperature detection signal received by the equidirectional input end of the comparator N2 is greater than the second reference signal received by the reverse input end of the comparator N2, at the moment, the triode Q2 is in a conducting state, the intermediate relay KM2 works, the normally open contact KM2-1 of the intermediate relay KM2 is closed, and the second fan 4 works; otherwise, the second fan 4 does not operate.
The implementation principle of the embodiment is as follows: when the frequency converter 22 starts to work, the frequency converter 22 generates heat, a small part of the heat is transferred to the machine room 1 through the vent holes 21 and the gaps on the frequency conversion cabinet 2, but the dissipated heat is too little, most of the heat is still in the frequency conversion cabinet 2, and along with the continuous heat generation of the frequency converter 22, the temperature of the air in the frequency conversion cabinet 2 is increased. When the air temperature in the cabinet body exceeds 30 ℃, the temperature detection signal is greater than the first reference signal, the comparator N1 outputs a high-level signal to enable the triode Q1 to be conducted, the intermediate relay KM1 and the intermediate relay KM3 work, the first fan 3, the indoor unit 6 and the outdoor unit 7 work, the first fan 3 blows air in the machine room 1 into the frequency conversion cabinet 2, hot air in the frequency conversion cabinet 2 flows into the machine room 1 from the ventilation air, and the indoor unit 6 transmits heat in the air in the machine room 1 to the outdoor unit 7 through the heat exchanger 8. If the power of the first fan 3 is sufficient, the heat generated by the frequency converter 22 and the heat entering the machine room 1 from the frequency conversion cabinet 2 reach dynamic balance, and the temperature in the frequency conversion cabinet 2 does not rise any more, so that the first fan 3 is kept running. If the temperature in the frequency conversion cabinet 2 continues to rise and exceeds 40 ℃, the temperature detection signal is greater than the second reference signal, the comparator N2 outputs a high-level signal, the triode Q2 is conducted, the intermediate relay KM2 works, the second fan 4 works, the speed of heat transmitted into the machine room 1 from the frequency conversion cabinet 2 is increased, and the temperature in the frequency conversion cabinet 2 does not continue to rise.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a converter computer lab temperature regulation system, includes computer lab (1), install frequency conversion cabinet (2), its characterized in that in computer lab (1): the air conditioner is characterized in that a cavity in the machine room (1) is a closed space, a frequency converter (22) is installed in the frequency conversion cabinet (2), an air vent (21) communicated with an inner cavity of the machine room (1) is formed in the side wall of the frequency conversion cabinet (2), a cold air assembly is arranged on the frequency conversion cabinet (2), and the cold air assembly is used for transferring air between the interior of the frequency conversion cabinet (2) and the cavity of the machine room (1); the outdoor unit heat exchanger is characterized by further comprising an indoor unit (6) arranged in the machine room (1), an outdoor unit (7) arranged outside the machine room (1) and a heat exchanger (8), wherein the heat exchanger (8) is arranged between the indoor unit (6) and the outdoor unit (7), and the heat exchanger (8) is used for transferring heat between the indoor unit (6) and the outdoor unit (7).
2. The temperature regulating system of the frequency converter machine room according to claim 1, characterized in that: the cold wind subassembly includes first fan (3), second fan (4) and temperature monitoring device (5), the air outlet of first fan (3) and second fan (4) all faces converter (22), temperature monitoring device (5) include temperature detection module (51), first the control unit (52) and second the control unit (53), temperature detection module (51) are used for detecting the temperature in frequency conversion cabinet (2) and export corresponding temperature detection signal, first the control unit (52) are coupled in temperature detection module (51) and are controlled opening and close of first fan (3) with receiving temperature detection signal and according to temperature detection signal, second the control unit (53) are coupled in temperature detection module (51) and are controlled opening and close of second fan (4) with receiving temperature detection signal and according to temperature detection signal.
3. The temperature regulating system of the frequency converter machine room according to claim 2, characterized in that: the first control unit (52) comprises a first reference module (521), a first comparison module (522), a first control module (523) and a first execution module (524), wherein the first reference module (521) is used for providing a first reference signal corresponding to a first early warning temperature, the first comparison module (522) is coupled to the temperature detection module (51) for receiving the temperature detection signal and outputting a corresponding first comparison signal, the first control module (523) is coupled to the first comparison module (522) for receiving the first comparison signal and outputting a corresponding first control signal, and the first execution module (524) is coupled to the first control module (523) for receiving the first control signal and responding to the first control signal to control the start of the first fan (3); the second control unit (53) includes a second reference module (531), a second comparison module (532), a second control module (533), and a second execution module (534), wherein the second reference module (531) is configured to provide a second reference signal corresponding to the second warning temperature, the second comparison module (532) is coupled to the temperature detection module (51) to receive the temperature detection signal and output a corresponding second comparison signal, the second control module (533) is coupled to the second comparison module (532) to receive the second comparison signal and output a corresponding second control signal, and the second execution module (534) is coupled to the second control module (533) to receive the second control signal and respond to the second control signal to control the activation of the second fan (4).
4. The temperature regulating system of the frequency converter machine room according to claim 3, characterized in that: the temperature monitoring device (5) further comprises a third execution module (525), and the third execution module (525) is coupled to the first control module (523) to receive the first control signal and respond to the first control signal to control the opening and closing of the indoor unit (6) and the outdoor unit (7).
5. The temperature regulating system of the frequency converter machine room according to claim 1, characterized in that: the indoor unit (6) is provided with an air inlet pipe (61) and an air outlet pipe (62), the end part, far away from the indoor unit (6), of the air inlet pipe (61) is located at the top of the machine room (1), and the end part, far away from the indoor unit (6), of the air outlet pipe (62) is located at the bottom of the machine room (1).
6. The temperature regulating system of the frequency converter machine room according to claim 5, characterized in that: a storage disc (9) is arranged in the machine room (1), and a drying agent (91) is placed on the storage disc (9).
7. The temperature regulating system of the frequency converter machine room according to claim 6, characterized in that: the object placing plate (9) is close to the air outlet pipe (62), and the end part, far away from the indoor unit (6), of the air outlet pipe (62) faces the drying agent (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021073077.9U CN212393124U (en) | 2020-06-11 | 2020-06-11 | Temperature adjusting system for frequency converter machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021073077.9U CN212393124U (en) | 2020-06-11 | 2020-06-11 | Temperature adjusting system for frequency converter machine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212393124U true CN212393124U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021073077.9U Active CN212393124U (en) | 2020-06-11 | 2020-06-11 | Temperature adjusting system for frequency converter machine room |
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| CN (1) | CN212393124U (en) |
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2020
- 2020-06-11 CN CN202021073077.9U patent/CN212393124U/en active Active
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Address after: 300000 No. 398, west side of Tanghan Road, Beitang street, Binhai New Area, Tianjin Patentee after: Tianjin Guoneng Binhai Thermal Power Co.,Ltd. Address before: No.1-18, Taishan Road, Xinyu home community, Beitang, Tanggu, Binhai New Area, Tianjin, 300450 Patentee before: Tianjin Guodian Tianjin Binhai Thermal Power Co.,Ltd. |