CN103344016B - A kind of machinery room energy-saving air conditioner - Google Patents
A kind of machinery room energy-saving air conditioner Download PDFInfo
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- CN103344016B CN103344016B CN201310311897.5A CN201310311897A CN103344016B CN 103344016 B CN103344016 B CN 103344016B CN 201310311897 A CN201310311897 A CN 201310311897A CN 103344016 B CN103344016 B CN 103344016B
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- 238000005057 refrigeration Methods 0.000 claims description 26
- 238000004378 air conditioning Methods 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 9
- 238000009835 boiling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000003750 conditioning Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 210000003660 Reticulum Anatomy 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
Abstract
The invention provides a kind of machinery room energy-saving air conditioner, comprise the evaporimeter be arranged in machine room, and be arranged at the first condenser, the second condenser, compressor, the Intermediate Heat Exchanger outside machine room.Machinery room energy-saving air conditioner of the present invention selects " heat pipe heat exchanging circulation pattern ", " compressor cooling circulation pattern " or " heat pipe heat exchanging circulation is freezed with compressor simultaneously " three kinds of operational modes neatly according to machine room internal and external temperature difference, in operational mode selection course, without any the action of machinery valve, effectively can solve the heat removal issue of machine room, and energy consumption is low, reliability is high, long service life.
Description
Technical field
The present invention relates to machinery room energy-saving air conditioner field, particularly a kind of machinery room energy-saving air conditioner.
Background technology
Because equipment heating amount is large in machine room, need special air-conditioning equipment to maintain the temperature in machine room.Current existing machine room generally adopts comfort air conditioning system to run temperature in controlling chamber continuously.Although this temperature control mode can meet the requirement of controlling machine room temperature, power consumption is comparatively large, causes operating cost higher.
Current existing machine room air-conditioning energy-saving technology mainly contains two kinds:
When one is at conditioning in Transition Season or winter, outside air temperature was cooler, introduces outdoor newly wind and cool the equipment in machine room.This equipment can directly utilize outdoor natural cooling source, but is difficult to meet the air purity in machine room and humidity regulation requirement, and larger to room management structural damage.When VMC quits work, there is the hidden danger of leaking out, cause when weather is more hot indoor cold to run off.VMC need into and out of air port place settle screen pack, and screen pack not only increases system wind resistance, and needs often to change, and maintenance is larger.
When another kind is at conditioning in Transition Season or winter, outside air temperature was cooler, plate type air heat exchanger is used to be introduced by the cold of outdoor air indoor.This technology achieves the isolation of indoor and outdoor air, avoids the air cleanliness and humid control problem that cause owing to directly introducing outdoor air.But because unit are heat exchange amount is little, volume is comparatively large, needs to offer air channel again and is connected with heat exchanger, larger to wall damage.Because heat exchanger have employed honeycomb, air flow channel is easily blocked by dust, therefore needs at the import and export place of outdoor air runner to install screen pack, and maintenance is larger.
Summary of the invention
For the shortcoming and defect of prior art, the invention provides a kind of machinery room energy-saving air conditioner, " heat pipe heat exchanging circulation pattern ", " compressor cooling circulation pattern " or " while that heat pipe heat exchanging circulation pattern and compression refrigeration circulating kind of refrigeration cycle pattern " three kinds of operational modes can be selected neatly according to machine room internal and external temperature difference, in operational mode selection course, without any the action of machinery valve, effectively can solve the heat removal issue of machine room, and its energy consumption is low, reliability is high, long service life.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of machinery room energy-saving air conditioner, it is characterized in that, comprise evaporimeter, the first condenser, the second condenser, compressor, throttle part, Intermediate Heat Exchanger, described evaporimeter is placed in machine room;
Described Intermediate Heat Exchanger is that dividing wall type heat exchanger has the first import, the first outlet, the second import, the second outlet;
The outlet of described evaporimeter is communicated with by the entrance of tube connector with threeway I, this threeway I first outlet, second outlet respectively with the first import of Intermediate Heat Exchanger, the inlet communication of the first condenser;
The import of described evaporimeter by the outlet of tube connector and threeway II, the first entrance of this threeway II, the second entrance respectively with the outlet of the first condenser, the first outlet of Intermediate Heat Exchanger;
Described Intermediate Heat Exchanger second is exported and is communicated with compressor air suction mouth by tube connector;
Described exhaust outlet of compressor is communicated with the second condenser inlet by tube connector;
Described second condensator outlet is by the inlet communication of tube connector and throttle part;
The outlet of described throttle part is by tube connector and Intermediate Heat Exchanger second inlet communication;
The position of described first condenser is higher than described evaporimeter;
The position of described Intermediate Heat Exchanger is higher than described evaporimeter.
Preferably, described evaporimeter and first, second condenser described all have blower fan.
Preferably, the outlet of described evaporimeter is arranged at its top, and its import is arranged at bottom it.
Preferably, the import of described first condenser is arranged at its top, and its import is arranged at bottom it.
Preferably, comprise the sensor for measuring the inside and outside temperature of machine room further, and control air-conditioning work controller, the temperature information that described controller records according to sensor controls the operational mode of air-conditioning.
Preferably, after device start, evaporator fan often turns, temperature-machine room outdoor temperature > first default value in machine room, and when indoor temperature is more than or equal to air-conditioning temperature control preset value further, described controller controls described first condenser fan of preferential startup, and close the second condenser fan and compressor, now operation of air conditioner is at heat pipe heat exchanging circulation pattern.
Further, at machine room indoor temperature-machine room outdoor < first default value, and indoor temperature is when being more than or equal to air-conditioning temperature control preset value and compressor delay start temperature sum further, described controller controls startup second condenser fan and compressor, close the first condenser fan, now operation of air conditioner is at compression refrigeration circulation pattern.
Further, at machine room indoor temperature-machine room outdoor temperature > first default value, and when in machine room, temperature exceedes temperature control preset value and the compressor delay start temperature sum of air-conditioning, described controller controls to start described evaporator fan and first, second condenser fan and compressor, now operation of air conditioner refrigeration mode heat pipe heat exchanging circulation pattern and compression refrigeration circulate while.
Further, described compressor delay start temperature be 0 ~ 5 DEG C adjustable, the temperature control preset value of air-conditioning is 23 DEG C.
Further, described first default value is 3 DEG C.
Preferably, described Intermediate Heat Exchanger is double pipe heat exchanger, plate type heat exchanger or shell-and-tube heat exchanger.
Preferably, the cold-producing medium of described air-conditioning is any one in R22, R134a or R410A.
From above technical scheme, machinery room energy-saving air conditioner of the present invention has heat pipe cycle heat exchange and compression refrigeration cycle heat exchange two kinds of heat exchange modes, cold-producing medium during heat pipe heat exchanging circulation circulates with compression refrigeration is completely isolated, heat exchange is carried out by means of only two Intermediate Heat Exchangers, not blending, effectively can solve two cycle sharing cold-producing mediums and the Flow-rate adjustment that causes is difficult and the problem of refrigeration oil reduction heat pipe cycle efficieny, this technical scheme is by selecting neatly " heat pipe circulation mode operation " according to machine room internal and external temperature difference, " operation of compressor cooling circulation pattern ", " or heat pipe circulation mode and compressor cooling circulation pattern run " simultaneously, without any the mechanical action of valve in operational mode handoff procedure, effectively can solve the heat removal issue of machine room, and energy consumption is low, reliability is high, long service life.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of machinery room energy-saving air conditioner of the present invention.
Fig. 2 is the working medium circulation schematic diagram that machinery room energy-saving air conditioner of the present invention is in " heat pipe heat exchanging circulation pattern ".
Fig. 3 is the working medium circulation schematic diagram that machinery room energy-saving air conditioner of the present invention is in " compression refrigeration circulation pattern ".
Fig. 4 is the working medium circulation schematic diagram of machinery room energy-saving air conditioner of the present invention when being in " heat pipe circulation mode and compression refrigeration circulation pattern run simultaneously ".
Detailed description of the invention
The invention provides a kind of machinery room energy-saving air conditioner, its energy consumption be low, reliability is high, long service life.
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the structural representation of machinery room energy-saving air conditioner of the present invention.As shown in Figure 1, machinery room energy-saving air conditioner of the present invention comprises the evaporimeter 1 be arranged in machine room 19, and is arranged at the first condenser 12, second condenser 13 outside machine room 19, and compressor 9, threeway I 5 and threeway II 17, Intermediate Heat Exchanger 4 and throttle part 8.
Wherein, threeway I 5 comprises entrance, the first outlet and the second outlet, and threeway II 17 comprises the first entrance, the second entrance and exit.
The outlet of evaporimeter 1 is communicated with by the entrance of tube connector 2 with threeway I 5; The import of the first condenser 12 is by first outlet of tube connector 10 with threeway I 5.
The entrance of evaporimeter 1 is by the outlet of tube connector 18 with threeway II 17; The outlet of the first condenser 12 is communicated with the first entrance of threeway II 17 by tube connector 14.
First entrance of Intermediate Heat Exchanger 4 is by second outlet of tube connector 6 with threeway I 5.
First outlet of Intermediate Heat Exchanger 4 is communicated with the second entrance of threeway II 17 by tube connector 16.
Second outlet of Intermediate Heat Exchanger 4 is communicated with by the air entry of tube connector 7 with compressor 9.
Second entrance of Intermediate Heat Exchanger 4 is communicated with the low-pressure end of throttle part 8 by tube connector 3.
The exhaust outlet of compressor 9 is communicated with the entrance of the second condenser 13 by tube connector 11.
The outlet of the second condenser 13 is communicated with the high-pressure side of throttle part 8 by practicing pipe 15.
Wherein, the integral position of the first condenser 12 should higher than evaporimeter 1.The integral position of Intermediate Heat Exchanger 4 should higher than evaporimeter 1.Thus ensure that the liquid refrigerant of condensation in the first condenser 12 or Intermediate Heat Exchanger 4 can be back in evaporimeter 1 under gravity, and without the need to increasing the drive units such as such as circulating pump.
Preferably, evaporimeter 1 and the first condenser 12, second condenser 13 all have blower fan.Wherein the first condenser 12 and the second condenser 13 can use same blower fan.
Preferably, machinery room energy-saving air conditioner of the present invention comprises the sensor (not shown) for measuring the inside and outside temperature of machine room further and controls the controller (not shown) of air-conditioning work according to the signal of this sensor.
After energy-saving type air conditioner starts, evaporator fan often turns, when the temperature outside machine room 19 is lower than the temperature in machine room 19, and this temperature difference is greater than a certain default value, and when the indoor temperature of machine room 19 is greater than the preset value of air-conditioning temperature control further, such as, the temperature control preset value of air-conditioning is 23 DEG C, temperature outside machine room 19 is lower than the temperature in machine room 19 more than 3 DEG C, and when the indoor temperature of machine room 19 is greater than 23 DEG C, controller can start the blower fan of the first condenser 12.Air-conditioning adopts the circulation pattern of heat pipe heat exchanging.
That is, under the circulation pattern of heat pipe heat exchanging as shown in Figure 2, separate-type heat pipe system is formed by the first condenser 12 outside the evaporimeter 1 in machine room 19 and machine room 19.Being the heat absorbing end of heat pipe in machine room 19, is the heat extraction end of heat pipe outside machine room 19.The top of evaporimeter 1 is communicated with the top of the first condenser 12 by tube connector 2, threeway I 5 and tube connector 10, and evaporimeter 1 and the first condenser 12, all with blower fan, adopt the mode of heat pipe heat exchanging, beyond the heat dissipation in machine room 19 to machine room 19.
When adopting the circulation pattern of heat pipe heat exchanging, compression-type refrigerating system is closed.Evaporimeter 1 fan starting, thermal air current evaporator 1 in machine room 19, the cold-producing medium in heating fumigators 1, when temperature exceedes working medium boiling point, working medium boiling in evaporimeter 1, meanwhile, air is cooled.The gaseous refrigerant that in evaporimeter 1, boiling produces, gaseous refrigerant arrow A direction flowing as shown in Figure 2, the first condenser 12 is flowed into via tube connector 2, threeway I 5, tube connector 10, first condenser 12 is with blower fan, for forced convection form, in first condenser 12, gaseous refrigerant is flow through the Air flow of the first condenser 12, condense into liquid state, liquid refrigerant is as arrow A direction in Fig. 2, under gravity, liquid refrigerant flow back into evaporimeter 1 from tube connector 14, threeway II 17, tube connector 18 bottom the first condenser 12, completes circulation.
Namely, when adopting the circulation pattern of heat pipe heat exchanging, the peripheral passage of heat pipe heat exchanging is constituted by evaporimeter 1, tube connector 2, threeway I 5, tube connector 10 and the first condenser 12, tube connector 14, threeway II 17, tube connector 18.
When the temperature difference in the temperature outside machine room 19 and machine room 19 is less than preset value and temperature in machine room 19 exceedes preset value and the compressor of air conditioner delay start temperature sum of air-conditioning temperature control, starting of air conditioner compression refrigeration circulation pattern.Controller starts blower fan, compressor 9, the throttle part 8 of the second condenser 13.
Under the circulation pattern of compression refrigeration as shown in Figure 3, during compression-type refrigeration circular flow, the refrigerant circulation of evaporimeter 1 and Intermediate Heat Exchanger 4 is as shown in arrow B direction in Fig. 3, cold-producing medium in evaporimeter 1 is by room air heating evaporation, become steam, flow to the first entrance of Intermediate Heat Exchanger 4 by tube connector 2, threeway I 5, tube connector 6, in Intermediate Heat Exchanger 4, be condensed into liquid, flow out from the first outlet of Intermediate Heat Exchanger 4, flow back into evaporimeter 1.The cold-producing medium heat that condensation discharges in 4 Intermediate Heat Exchangers 4 being flowed into Intermediate Heat Exchanger 4 by evaporimeter 1 has been delivered in the cold-producing medium in compression-type refrigeration circulation, cold-producing medium evaporation during compression-type refrigeration is circulated becomes steam, flow of refrigerant direction in compression-type refrigeration circulation is as shown in arrow C direction in Fig. 3, refrigerant vapour flows out from the second outlet of Intermediate Heat Exchanger 4, be inhaled in compressor 9 by tube connector 7 and compress, superheated steam is become from compressor 9 cold-producing medium out, superheated steam is flowed in the second condenser 13 by tube connector 11 and carries out condensation, condensed cold-producing medium, throttle part 8 is flow to by tube connector 1 I 5, cold-producing medium after throttling becomes the liquid-vapor mixture of low-temp low-pressure, by tube connector 3, flow back to Intermediate Heat Exchanger 4 from the second entrance of Intermediate Heat Exchanger, continue evaporation endothermic.
When the temperature difference in the temperature outside machine room 19 and machine room 19 is greater than preset value and temperature in machine room 19 exceedes air-conditioning temperature control preset value and compressor delay start temperature sum constantly, such as, air-conditioning temperature control preset value 23 DEG C, compressor delay start temperature 1 DEG C, when the temperature difference inside and outside machine room 19 is greater than 3 DEG C, although the circulation pattern of heat pipe heat exchanging can be enabled, but heat pipe heat exchanging circulation pattern cannot meet the heat extraction demand of machine room, when indoor temperature is increased to 23 DEG C+1 DEG C, the pattern of starting of air conditioner " heat pipe heat exchanging circulation pattern and compression refrigeration circulate and runs simultaneously ".Controller starts blower fan, the blower fan of the second condenser 13, compressor 9, the throttle part 8 of the first condenser 12.
As shown in Figure 4, under the pattern of " heat pipe heat exchanging circulation runs with the circulation of compression refrigeration simultaneously ", the refrigerant circulation of heat pipe heat exchanging circulation is as shown in the D arrow in Fig. 4.Evaporimeter 1 fan starting, thermal air current evaporator 1 in machine room 19, the cold-producing medium in heating fumigators 1, when temperature exceedes working medium boiling point, working medium boiling in evaporimeter 1, meanwhile, air is cooled.
The gaseous refrigerant that in evaporimeter 1, boiling produces, gaseous refrigerant arrow D direction flowing as shown in Figure 4, after tube connector 2, threeway I 5:
A gaseous refrigerant part flows into the first condenser 12 along D1 direction by tube connector 10, first condenser 12 is with blower fan, for forced convection form, in first condenser 12, gaseous refrigerant is flow through the Air flow of the first condenser 12, condense into liquid state, liquid refrigerant as arrow D1 direction in Fig. 4, under gravity, liquid refrigerant flow back into evaporimeter 1 from tube connector 14, threeway II 17, tube connector 18 bottom the first condenser 12, completes heat pipe heat exchanging circulation;
Gaseous refrigerant another part is flowed into the first entrance of Intermediate Heat Exchanger 4 by tube connector 6 along D2 direction, in Intermediate Heat Exchanger 4, become liquid refrigerant by the working fluid condenses that compression refrigeration circulates, and has the first outlet of Intermediate Heat Exchanger to flow out, flows back in evaporimeter.The liberated heat of this part cold-producing medium is by the refrigerant suction of the compression refrigeration circulation in Intermediate Heat Exchanger 4, and the refrigerant circulation of compression refrigeration circulation as shown by c in fig 4.
Preferably, Intermediate Heat Exchanger 4 can be double pipe heat exchanger, plate type heat exchanger or shell-and-tube heat exchanger.
Preferably, the cold-producing medium of described air-conditioning is any one in R22, R134a or R410A, and cold-producing medium, also can be used in combination for selecting wherein a kind of single use.The cold-producing medium used in heat pipe heat exchanging circulation pattern and compression refrigeration circulation pattern is completely isolated, carries out heat exchange, not blending by means of only two Intermediate Heat Exchangers, therefore, it is possible to the problem of the Flow-rate adjustment difficulty effectively solving two cycle sharing cold-producing mediums and cause.
From above technical scheme, machinery room energy-saving air conditioner of the present invention has heat pipe heat exchanging and compression refrigeration cycle heat exchange two kinds of heat exchange modes, by selecting wherein a kind of heat exchange mode neatly according to machine room internal and external temperature difference, effectively can solve the heat removal issue of machine room, and energy consumption is low, reliability is high, long service life.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (7)
1. a machinery room energy-saving air conditioner, is characterized in that, comprise evaporimeter, the first condenser, the second condenser, compressor, throttle part, Intermediate Heat Exchanger, described evaporimeter is placed in machine room;
Described Intermediate Heat Exchanger is that dividing wall type heat exchanger has the first import, the first outlet, the second import, the second outlet;
The outlet of described evaporimeter is communicated with by the entrance of tube connector with threeway I, this threeway I first outlet, second outlet respectively with the first import of Intermediate Heat Exchanger, the inlet communication of the first condenser;
The import of described evaporimeter by the outlet of tube connector and threeway II, the first entrance of this threeway II, the second entrance respectively with the outlet of the first condenser, the first outlet of Intermediate Heat Exchanger;
Described Intermediate Heat Exchanger second is exported and is communicated with compressor air suction mouth by tube connector;
Described exhaust outlet of compressor is communicated with the second condenser inlet by tube connector;
Described second condensator outlet is by the inlet communication of tube connector and throttle part;
The outlet of described throttle part is by tube connector and Intermediate Heat Exchanger second inlet communication;
The position of described first condenser is higher than described evaporimeter;
The position of described Intermediate Heat Exchanger is higher than described evaporimeter;
Described evaporimeter and described first condenser, the second condenser all have blower fan;
The outlet of described evaporimeter is arranged at its top, and its import is arranged at bottom it.
2. machinery room energy-saving air conditioner according to claim 1, it is characterized in that, comprise the sensor for measuring the inside and outside temperature of machine room further, and control the controller of air-conditioning work, described controller controls the operational mode of air-conditioning according to the temperature information that sensor records.
3. machinery room energy-saving air conditioner according to claim 2, it is characterized in that, after device start, evaporator fan often turns, temperature-machine room outdoor temperature > first default value in machine room, and when indoor temperature is more than or equal to air-conditioning temperature control preset value further, described controller controls described first condenser fan of preferential startup, close the second condenser fan and compressor, now operation of air conditioner is at heat pipe heat exchanging circulation pattern.
4. machinery room energy-saving air conditioner according to claim 3, it is characterized in that, at machine room indoor temperature-machine room outdoor < first default value, and indoor temperature is when being more than or equal to air-conditioning temperature control preset value and compressor delay start temperature sum further, described controller controls startup second condenser fan and compressor, close the first condenser fan, now operation of air conditioner is at compression refrigeration circulation pattern.
5. machinery room energy-saving air conditioner according to claim 4, it is characterized in that, at machine room indoor temperature-machine room outdoor temperature > first default value, and when in machine room, temperature exceedes temperature control preset value and the compressor delay start temperature sum of air-conditioning, described controller controls to start described evaporator fan and first, second condenser fan and compressor, now operation of air conditioner refrigeration mode heat pipe heat exchanging circulation pattern and compression refrigeration circulate while.
6. machinery room energy-saving air conditioner according to claim 5, is characterized in that, described compressor delay start temperature be 0 ~ 5 DEG C adjustable, the temperature control preset value of described air-conditioning is 23 DEG C.
7. the machinery room energy-saving air conditioner according to any one of claim 3 to 6, is characterized in that, described first default value is 3 DEG C.
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| CN113124584A (en) * | 2019-12-30 | 2021-07-16 | 阿里巴巴集团控股有限公司 | Refrigeration system, control method and data center |
| CN112178838A (en) * | 2020-08-27 | 2021-01-05 | 珠海格力电器股份有限公司 | Natural cooling system, control method and machine room |
| CN113503597A (en) * | 2021-07-02 | 2021-10-15 | 中国核电工程有限公司 | Air conditioner cooling system and air conditioner refrigerating method |
| CN113503585A (en) * | 2021-07-13 | 2021-10-15 | 北京突破智能科技有限公司 | Novel energy-saving air conditioning system |
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