CN103307820B - Air-cooled outdoor air conditioner system - Google Patents
Air-cooled outdoor air conditioner system Download PDFInfo
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- CN103307820B CN103307820B CN201310216380.8A CN201310216380A CN103307820B CN 103307820 B CN103307820 B CN 103307820B CN 201310216380 A CN201310216380 A CN 201310216380A CN 103307820 B CN103307820 B CN 103307820B
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Abstract
The present invention is applicable to air-conditioning technical field, disclose a kind of air-cooled outdoor air conditioner system, it comprises refrigerant circulation circuit and in order to control the controller that this air-conditioning system is run, refrigerant circulation circuit comprises the finned heat exchanger, compressibility, shell-and-tube heat exchanger and the expansion system that are connected by pipeline; This air-conditioning system also comprises electric control valve and for the spray equipment to finned heat exchanger ejecting liquid, the two ends of spray pipeline connect spray equipment and shell-and-tube heat exchanger respectively, and electric control valve is located on spray pipeline, and electric control valve electrical connection controller.It is when summer temp is warmmer, sprays the lower cold liquid of temperature by spray equipment to finned heat exchanger, thus effectively reduces surface temperature and the ambient temperature thereof of finned heat exchanger; When temperature is colder in the winter time, spray the higher hot liquid of temperature by spray equipment to finned heat exchanger, thus effectively dissolve the frosting on finned heat exchanger, and spray process does not affect the normal refrigeration of air-conditioning system and heats.
Description
Technical field
The invention belongs to air-conditioning technical field, particularly relate to a kind of air-cooled outdoor air conditioner system.
Background technology
Air-cooled outdoor air conditioner system, generally comprises refrigerant circulation circuit and in order to control the controller that air-conditioning system is run, and refrigerant circulation circuit is mostly enclosed by finned heat exchanger, compressor, gas-liquid separator, shell-and-tube heat exchanger and electric expansion valve and forms.Along with the continuous aggravation of earth atmosphere greenhouse effects, the demand that traditional air-cooled type air conditioning system more and more cannot conform, it is the following two problems of ubiquity in a particular application: when first problem is summer, the phenomenon such as continuous high-pressure warning, discontinuous on ambient temperature continuous high temperature, pipeline easily appears in finned heat exchanger, thus reduce the heat transfer effect of finned heat exchanger, and had a strong impact on the normal continuously operation of air-conditioning system, and then greatly reduce the refrigeration of air-conditioning system; Finned heat exchanger surface easily frosting when Second Problem is winter, thus increase finned heat exchanger surface and the heat transfer resistance of air, add air-flow by flow resistance during finned heat exchanger, and then have a strong impact on the heating effect of air-conditioning system.
For above-mentioned first problem, the solution that prior art often adopts is: when loine pressure reaches certain value, adopts and carries out unloading the sustainable operation that the mode of step-down carries out ensureing compressor to compressor.Its shortcoming is: the unloading of compressor greatly reduces the semen donors of air-conditioning system to indoor, thus has had a strong impact on the refrigeration of air-conditioning system, and then reduces indoor comfort level, like this, easily causes user to the complaint of product.
For above-mentioned Second Problem, the solution that prior art often adopts is: reverse cycle defrosting method or hot gas bypass defrosting method.Reverse cycle defrosting method is that refrigerant circulation circuit is switched to refrigeration work state, to make finned heat exchanger use as condenser, thus the HTHP refrigerant of compressor discharge can be utilized to carry out dissolving the frosting of finned heat exchanger; The shortcoming of this method is: its defrost process needs to shut down defrosting, like this, makes it heat the course of work and lacks continuity, thus have impact on the heating effect of air-conditioning system, and then reduce indoor comfort level.Hot gas bypass defrosting method is that the method taking compressor discharge port shunting carries out dissolving the frosting of finned heat exchanger, and shortcoming is: its defrosting efficiency reduces, and greatly reduces indoor heating effect, and like this, the comfort of user also can reduce greatly.
Summary of the invention
The object of the invention is to propose a kind of air-cooled outdoor air conditioner system, be intended to solve existing air-cooled outdoor air conditioner system when summer because finned heat exchanger ambient temperature is too high, pipeline pressure too high cause air-conditioning system poor refrigerating efficiency and in the winter time time cause the technical problem of air-conditioning system heating effect difference due to finned heat exchanger frosting.
Technical scheme of the present invention is: a kind of air-cooled outdoor air conditioner system, comprise refrigerant circulation circuit and the controller in order to control the operation of this air-conditioning system, described refrigerant circulation circuit comprises the finned heat exchanger, compressibility, shell-and-tube heat exchanger and the expansion system that are connected by pipeline; This air-conditioning system also comprises spray pipeline, electric control valve and for the spray equipment to described finned heat exchanger ejecting liquid, the two ends of described spray pipeline connect described spray equipment and described shell-and-tube heat exchanger respectively, described electric control valve is located on described spray pipeline, and described electric control valve is electrically connected described controller.
Air-cooled outdoor air conditioner air-conditioning system provided by the invention, it by setting up spray equipment on finned heat exchanger, and connect spray equipment and shell-and-tube heat exchanger by spray pipeline, simultaneously, keying and the piping flow size of spray pipeline is controlled by electric control valve, like this, electric control valve can be controlled as required to make spray equipment to finned heat exchanger ejecting liquid, thus effectively reduce the impact of ambient temperature on finned heat exchanger heat transfer effect.Particularly, when finned heat exchanger surrounding enviroment are too high or pipeline pressure is too high, controller can send instruction and open electric control valve, to be sprayed the cold liquid of lower temperature to finned heat exchanger by spray equipment, thus reach the object reducing finned heat exchanger surface temperature and ambient temperature thereof, like this, ensure that the heat transfer effect of finned heat exchanger on the one hand, avoid on the other hand air-conditioning system to be in operation and frequently to occur the phenomenon that high temperature protection is shut down or high voltage protective is shut down, thus ensure that the lasting reliable refrigeration of air-conditioning system, and then improve user and use comfort level in product process, and when finned heat exchanger frosting is serious, controller can send instruction and open electric control valve, to be sprayed the hot liquid of higher temperature to finned heat exchanger by spray equipment, thus reach the object dissolving finned heat exchanger frosting, like this, ensure that the heat transfer effect of finned heat exchanger on the one hand, avoid on the other hand air-conditioning system to be in operation and frequently to occur the phenomenon that low-temperature protection is shut down or low-voltage variation is shut down, thus ensure that air-conditioning system continue reliably heat, and then improve user and use comfort level in product process.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air-cooled outdoor air conditioner system that the embodiment of the present invention provides;
Fig. 2 be the air-cooled outdoor air conditioner system that provides of the embodiment of the present invention heat working state schematic representation;
Fig. 3 is the refrigeration work view of the air-cooled outdoor air conditioner system that the embodiment of the present invention provides;
Fig. 4 is the connection diagram of the compressibility that provides of the embodiment of the present invention and finned heat exchanger, shell-and-tube heat exchanger;
Fig. 5 is the connection diagram of the expansion system that provides of the embodiment of the present invention and finned heat exchanger, shell-and-tube heat exchanger.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in FIG. 1 to 3, the air-cooled outdoor air conditioner system that the embodiment of the present invention provides, it comprises refrigerant circulation circuit and in order to control the controller 1 that this air-conditioning system is run, refrigerant circulation circuit comprises the finned heat exchanger 2, compressibility 3, shell-and-tube heat exchanger 4 and the expansion system 5 that are connected by pipeline; This air-conditioning system also comprises spray pipeline 601, electric control valve 602 and for the spray equipment 6 to finned heat exchanger 4 ejecting liquid, the two ends of spray pipeline 601 connect spray equipment 6 and shell-and-tube heat exchanger 4 respectively, electric control valve 602 is located on spray pipeline 601, and electric control valve 601 is electrically connected controller 1.The running status of electric control valve 602 is controlled by controller 1, like this, can improve the automation of air-conditioning system.Finned heat exchanger 2 comprises spaced fin (not shown), be located on fin in order to be full of the heat exchanger tube (not shown) of refrigerant and to be located at above fin or the blower fan (not shown) of side.Spray equipment 6 can be located at the top of finned heat exchanger 2, also the side of finned heat exchanger 2 can be located at, the present embodiment, the top of fin is located at by blower fan, spray equipment 6 is preferably arranged on the inlet side above finned heat exchanger 2, and between fin and blower fan, like this, the liquid that spray equipment 6 can be made to spray out is ejected on fin and heat exchanger tube better, more.Spray equipment 6 comprises multiple nozzle (not shown), and the opening direction of nozzle is towards side, fin place.Nozzle can make the liquid ejected from its opening be tiny drop-wise or vaporific, like this, can improve the uniformity of spray equipment 6 ejecting liquid and can expand spray scope, thus effectively improve spraying effect.In embody rule, electric control valve 602 is in normally off, summer temp too high cause finned heat exchanger 2 surrounding enviroment too high or pipeline pressure is too high time, control electric control valve 602 by controller 1 and open, with effective conducting spray pipeline 601.Like this, spray equipment 6 can be made to spray the cold liquid of lower temperature to finned heat exchanger 2, and wherein a part of cold liquid is in the inlet side rapid evaporation of finned heat exchanger 2, thus effectively reduces the ambient temperature of finned heat exchanger 2; The cold liquid of another part can spray on fin and heat exchanger tube, it runs into the fin of high temperature and heat exchanger tube evaporates rapidly and takes away the most of heat on fin and heat exchanger tube, thus effectively can reduce the surface temperature of fin and heat exchanger tube, and make the refrigerant in heat exchanger tube accelerate liquefaction to reduce the pressure in pipeline, and then reduce the running current of compressor 32, what ensure that air-conditioning system continues normal operation, and improves refrigeration.Temperature is too low in the winter time for it when causing that finned heat exchanger 2 surrounding enviroment are too low or pipeline pressure is too low and reach frosting critical value, controls electric control valve 602 and opens, with effective conducting spray pipeline 601 by controller 1.Like this, spray equipment 6 can be made to spray the hot liquid of higher temperature to finned heat exchanger 2, wherein a part of hot liquid carries out heat exchange in the inlet side of finned heat exchanger 2 and air, and effectively improves the ambient temperature of finned heat exchanger 2, to reduce the possibility of finned heat exchanger 2 frosting; Another part hot liquid can spray on fin and heat exchanger tube, and effectively can dissolve the frosting on fin and heat exchanger tube, thus effectively ensures the heat transfer effect of finned heat exchanger 2, and what improve indoor set heats comfort level.Further, because spray process can not affect the normal operation of refrigerant circulation circuit, so, effectively ensure that air-conditioning system under summer high temperature environment condition and in the winter time all sustainable normal operation under cold environmental conditions, thus improve user and use comfort level in product process.
Further, as shown in FIG. 1 to 3, the present embodiment also comprises environment temperature sensor 7 and the first pressure sensor 8, environment temperature sensor 7 is located at the outside of finned heat exchanger 2, first pressure sensor 8 is located on the connecting line between finned heat exchanger 2 and compressibility 3, environment temperature sensor 7 and the first pressure sensor 8 are all electrically connected controller 1, environment temperature sensor 7 is in order to detect the ambient temperature of finned heat exchanger 2 and to be fed back to by Detection Information on controller 1, first pressure sensor 8 feeds back on controller 1 in order to detect on the connecting line between finned heat exchanger 2 and compressibility 3 and by Detection Information, the feedback information of controller 1 environmentally temperature sensor 7 and the first pressure sensor 8 controls the keying of electric control valve 602.In embody rule, can the low critical value of setting in controller 1 in advance and the low critical value of detected pressures of high critical value and the first pressure sensor 8 and high critical value, when environment temperature sensor 7 detects temperature value lower than the low critical value of environment temperature of setting or the environment temperature high critical value higher than setting, or when the low critical value of the pipeline pressure value that the first pressure sensor 8 detects lower than setting or the high critical value higher than setting, namely controller 1 is judged to meet spray condition, thus send instruction unlatching electric control valve 602, spray to finned heat exchanger 2 to make spray equipment 6, until when the feedback information that controller 1 receives does not meet spray condition, then close electric control valve 602, stop making spray equipment 6 spraying to finned heat exchanger 2, thus the unnecessary wasting of resources can be avoided.The present embodiment, controller 1 carries out by environment temperature sensor 7 and the first pressure sensor 8 keying controlling electric control valve 602, of course, controller 1 also carries out by alternate manner the keying controlling electric control valve 602, operation conditions as the refrigeration according to indoor set, heating effect or compressibility 3 carries out the keying controlling electric control valve 602, during specific design, design can be optimized according to actual conditions.
Particularly, as shown in FIG. 1 to 3, shell-and-tube heat exchanger 4 comprises shell side import a, shell-side outlet b, tube side import c and tube side outlet d, and one end of spray pipeline 601 is other meets shell-side outlet b, tube side outlet d connects compressibility 3, and tube side import c connects expansion system 5; Shell side import a and shell-side outlet b are all connected with the indoor heat exchanger (not shown) of indoor set.Understandably, shell-and-tube heat exchanger 4 comprises shell-side fluid and tube side fluid, shell-side fluid from shell side import a inflow pipe shell heat exchanger 4, through with tube side fluid heat exchange after flow out from shell-side outlet b.Shell-side fluid is the ejecting liquid of spray equipment 6, shell-side fluid preferred water, and specific heat of water holds greatly, mobility is large, and water wide material sources, reusable edible; Tube side fluid is the refrigerant of refrigerant circulation circuit.It is using the ejecting liquid of shell-side fluid as spray equipment 6, and like this, the refrigerant circulation that spray process can be made on the one hand can not to affect refrigerant circulation circuit runs, thus ensure that the stability that air-conditioning system is run; It does not need extra device to carry out supply ejecting liquid on the other hand, like this, effectively reduces the number of components of air-conditioning system, and greatly reduces the manufacturing cost of air-conditioning system.During refrigeration work, refrigerant enters in shell-and-tube heat exchanger 4 from tube side import c, after carrying out heat exchange with shell-side fluid, flows out in compressibility 3 from tube side outlet d; When heating work, refrigerant enters in shell-and-tube heat exchanger 4 from tube side outlet d, after carrying out heat exchange with shell-side fluid, flows out in expansion system 5 from tube side import c.
Further, as shown in Figure 1, Figure 4 and Figure 5, shell side import a place is provided with the first temperature sensor 401, and shell-side outlet b place is provided with the second temperature sensor 402.First temperature sensor 401 is in order to detect the temperature of the shell-side fluid entered in shell side import a in real time, and the second temperature sensor 402 is in order to detect the temperature of the shell-side fluid flowing out shell-side outlet b in real time.In embody rule, the duty (decrement as compressor 32) regulating refrigerant circulation circuit can be carried out according to the temperature detection value of the first temperature sensor 401 and the second temperature sensor 402, with the job requirement making the shell-side fluid temperature of shell side import a and shell-side outlet b all meet setting, thus effectively ensure that indoor refrigeration and heat comfort level.Simultaneously, the fluid controlling shell-side outlet b is carried out according to the second temperature sensor 402, also the fluid temperature that spray equipment 6 sprays can effectively be controlled, thus effectively ensure the spraying effect of spray equipment 6, as when spraying summer, by controlling the fluid temperature of shell-side outlet b, with the cold liquid making spray equipment 6 spray 7 DEG C on finned heat exchanger 2, thus ensure decrease temperature and pressure effect; When spraying in the winter time, by controlling the fluid temperature of shell-side outlet b, with the hot liquid making spray equipment 6 spray 45 DEG C on finned heat exchanger 2, thus ensure defrosting effect.
Particularly, as shown in Figure 1 to 4, compressibility 3 comprises gas-liquid separator 31, compressor 32 and the reversal valve 33 for switching the refrigerant flow direction, the delivery outlet e of gas-liquid separator 31 connects the input port g of compressor 32, the input port f of gas-liquid separator 31 is commutated by reversal valve 33 and connects finned heat exchanger 2 and shell-and-tube heat exchanger 4, and the delivery outlet h of compressor 32 is commutated by reversal valve 33 and connects finned heat exchanger 2 and shell-and-tube heat exchanger 4; First pressure sensor 8 is located on the connecting line between reversal valve 33 and finned heat exchanger 2.Gas-liquid separator 31, compressor 32 and reversal valve 33 are all electrically connected controller 1, and namely gas-liquid separator 31, compressor 32 and reversal valve 33 are by controller 1 controlling run, like this, are convenient to the unified operation controlling compressibility 3 of controller 1.The arranging of reversal valve 33 effectively can realize the quick switching that refrigerant flows to, thus can make air-conditioning system easily in refrigeration work state with heat duty and switch, and its structure is simple, practical.
Preferably, reversal valve 33 is cross valve, and its four interfaces respectively pipeline connect finned heat exchanger 2, gas-liquid separator 31, compressor 32 and shell-and-tube heat exchanger 4.Cross valve commutation simple and flexible, it applies in the connecting line of multidirectional commutation, can reduce again the quantity of parts, and cross valve can adopt standard component under the prerequisite that satisfied commutation requires, like this, can simplify its design process.Particularly, four interfaces of cross valve connect finned heat exchanger 2, input port f, the compressor 32 delivery outlet h of gas-liquid separator 31 and the tube side outlet d of shell-and-tube heat exchanger 4 respectively.When cross valve switch to the input port f conducting of finned heat exchanger 2 and gas-liquid separator 31, the tube side of compressor 32 delivery outlet h and shell-and-tube heat exchanger 4 export the state of d conducting time, air-conditioning system is in and heats duty; When cross valve switches to finned heat exchanger 2 and compressor 32 delivery outlet h conducting, the input port f of gas-liquid separator 31 and the tube side of shell-and-tube heat exchanger 4 export the state of d conducting, air-conditioning system is in refrigeration work state.
Further, as shown in Figure 4, on the delivery outlet h of compressor 32 and the connecting line of reversal valve 33, be also provided with the 4th temperature sensor 302, second pressure sensor 301 and safety valve the 309, four temperature sensor 302, second pressure sensor 301 and safety valve 309 and be all electrically connected controller 1.The setting of safety valve 309 in order to available protecting compressor 32, to prevent the work of compressor 32 overburden.4th temperature sensor 302 and the second pressure sensor 301 are respectively in order to detect refrigerant temperature and the pipeline refrigerant pressure of compressor 32 discharge in real time, like this, the duty regulating compressor 32 better can be convenient to, to optimize the refrigerant circulation state of refrigerant circulation circuit.
Further, as shown in Figure 4, in compressor 32 input port, g side is provided with low tension switch 304, and the equipped at outlet port in compressor 32 is provided with high-voltage switch gear 305 and oily differential pressure switch 306, and low tension switch 304, high-voltage switch gear 305 and oily differential pressure switch 306 are all electrically connected controller 1.Low tension switch 304 inputs in order to the low pressure of real-time guard compressor 32, and high-voltage switch gear 305 is in order to the High voltage output of real-time guard compressor 32, and oily differential pressure switch 306 exports the oil content in refrigerant in order to real-time guard compressor 32.By the setting of low tension switch 304, high-voltage switch gear 305 and oily differential pressure switch 305, the security reliability that compressor 32 runs effectively can be ensured.
Further, as shown in Figure 4, on the input port f of gas-liquid separator 31 and the connecting line of reversal valve 33, also be provided with the 3rd pressure sensor 307, the 5th temperature sensor 302, the 4th pressure sensor the 309, three pressure sensor 307, the 5th temperature sensor 302 and the 4th pressure sensor 309 and be all electrically connected controller 1.Wherein, the 3rd pressure sensor 307 in order to the pressure data collection of electric expansion valve 52 so that regulate the duty of electric expansion valve 52 better.5th temperature sensor 302 and the 4th pressure sensor 30 enter refrigerant temperature and the pressure of gas-liquid separator 31, so that regulate the duty of each parts better in order to detection in real time respectively.
Particularly, as shown in Fig. 1 ~ Fig. 3 and Fig. 5, expansion system 5 comprises distributor 51, electric expansion valve 52 and three-temperature sensor 53, distributor 51 one end connects finned heat exchanger 2, the other end connects one end of electric expansion valve 52, the other end tube connector shell heat exchanger 4 of electric expansion valve 52, three-temperature sensor 53 is located on the connecting line of distributor 51 and electric expansion valve 52.Electric expansion valve 52 and three-temperature sensor 53 are all electrically connected controller, and controller 1 controls the aperture of electric expansion valve 52 according to the data message that three-temperature sensor 53 and the 3rd pressure sensor 307 feed back.Heating duty, refrigerant flows on finned heat exchanger 2 from electric expansion valve 52, now, refrigerant can effectively be evenly distributed on every root heat exchanger tube of finned heat exchanger 2 by distributor 51, thus the heat exchange uniformity of refrigerant on finned heat exchanger 2 can be improved, and then ensure that the reliability of refrigerant how pipeline Inner eycle; In refrigeration work state, refrigerant flows to electric expansion valve 52 from finned heat exchanger 2, and now, the refrigerant in the heat exchanger tube of finned heat exchanger 2 collects and dredges on electric expansion valve 52 by distributor 51.
Further, as shown in Figure 5, electric expansion valve 52 is other is also connected in parallel to a magnetic valve 59, and magnetic valve 59 is main in order to shunt, and like this, the pressure on the one hand on available buffer electric expansion valve 52, can ensure the reliability of refrigerant circulation on the other hand.
Further, as shown in Fig. 2, Fig. 3 and Fig. 5, distributor 51 connects electric expansion valve 52 by two branch lines, and one of them branch line is provided with the first control valve 54 and device for drying and filtering 55, and another branch line is provided with the second control valve 56.For convenience of description, the branch line being provided with the first control valve 54 and device for drying and filtering 55 is called the first branch line, the branch line being provided with the second control valve 56 becomes the second branch line.First control valve 54 and the second control valve 56 are mainly in order to control the flow direction of refrigerant, preferably, first control valve 54 and the second control valve 56 all adopt check valve, one-way valve structures is simple, and can coolant backflow be prevented, thus improve the accuracy of refrigerant traffic organising, and then improve the reliability of refrigerant circulation.Particularly, first control valve 54 can only flow to electric expansion valve 52 from distributor 51 in order to make the refrigerant on the first branch line 501, second control valve 56 can only flow to distributor 51 from electric expansion valve 52 in order to make the refrigerant on the second branch line 502, like this, refrigerants different under can realizing refrigerating state and heating state flows to and switches.Heating duty, the refrigerant pressure of refrigerant pressure ratio finned heat exchanger 2 side of electric expansion valve 52 side is high, therefore refrigerant flows to distributor 51 from electric expansion valve 52, and namely the first branch path 501 is in blocking state, and the second branch path 502 is in conducting state; In refrigeration work state, the refrigerant pressure of refrigerant pressure ratio finned heat exchanger 2 side of electric expansion valve 52 side is low, therefore refrigerant flows to electric expansion valve 52 from distributor 51, and namely the first branch path 501 is in conducting state, and the second branch path 502 is in blocking state.
Further, as shown in Fig. 2, Fig. 3 and Fig. 5, between the first control valve 54 and shell-and-tube heat exchanger 4, be also provided with branch road 503 on one side, one end tube connector shell heat exchanger 4 on collateral branch road 503, the other end is connected on the connecting line between the first check valve and device for drying and filtering 55; And collateral branch road 503 is provided with the 3rd control valve 57.The setting of the 3rd control valve 57 flows in order to the refrigerant effectively controlled on collateral branch road 503.Preferably, 3rd control valve 57 adopts check valve, and the refrigerant on collateral branch road 503 can only from shell-and-tube heat exchanger 4 effluent to the first branch path 501, when the setting on collateral branch road 503 is in order to make to heat duty, refrigerant can flow through electric expansion valve 52 from shell-and-tube heat exchanger 4 and flow on finned heat exchanger 2; And in refrigeration work state, collateral branch road 503 is in blocking state.
Further, as shown in Fig. 2, Fig. 3 and Fig. 5, in electric expansion valve 52 with on the connection branch road 504 of shell-and-tube heat exchanger 4, be also provided with the 4th control valve 58.The setting of the 4th control valve 58 flows to the refrigerant of shell-and-tube heat exchanger 4 in order to effective control valve shell heat exchanger 4.Preferably, the 4th control valve 58 adopts check valve, and on this connection branch road 504, refrigerant can only flow to shell-and-tube heat exchanger 4 from electric expansion valve 52.Collateral branch road 503 be connected branch road 504 and belong to the pipeline be connected in parallel between electric expansion valve 52 and shell-and-tube heat exchanger 4, flow in order to different refrigerant under realizing refrigerating state and heating state and switch.In embody rule, the tube side import c of shell-and-tube heat exchanger 4 can only arrange one, and now, collateral branch road 503 connects a tube side import c jointly with the bottom (end to side, shell-and-tube heat exchanger 4 place extends) being connected branch road 504; Or the tube side import c of shell-and-tube heat exchanger 4 can arrange two, now, the bottom on collateral branch road 503 connects one of them tube side import c, and the bottom connecting branch road 504 connects another one tube side import c.The present embodiment, the tube side import c of shell-and-tube heat exchanger 4 arranges two.Particularly, in refrigeration work state, the refrigerant pressure of refrigerant pressure ratio shell-and-tube heat exchanger 4 side of electric expansion valve 52 side is high, therefore, refrigerant flows to shell-and-tube heat exchanger 4 from electric expansion valve 52, and connect branch road 504 and be in conducting state, collateral branch road 503 is in blocking state; Heating duty, the refrigerant pressure of refrigerant pressure ratio shell-and-tube heat exchanger 4 side of electric expansion valve 52 side is low, therefore refrigerant flows to electric expansion valve 52 from shell-and-tube heat exchanger 4, and namely connect branch road 504 and be in blocking state, collateral branch road 503 is in conducting state.
Further, as shown in Figure 5, for the ease of the maintenance of device for drying and filtering 55, first ball valve 551 and the second ball valve 552 is set respectively in the both sides of device for drying and filtering 55, and the first ball valve 551 is located between the first control valve 54 and device for drying and filtering 55, the second ball valve 552 is located between electric expansion valve 52 and device for drying and filtering 55.
Further, as shown in Figure 5, between device for drying and filtering 55 and the second ball valve 552, liquid-sighting glass 553 is also provided with.In embody rule, refrigerant state in rear pipeline and cold medium flux size is filtered by liquid-sighting glass 553 filter 55 that sees drying intuitively, like this, the duty of device for drying and filtering 55 can be judged on the one hand, be convenient to timely cleaning, safeguard device for drying and filtering 55, the duty of each parts in refrigerant circulation circuit can be regulated on the other hand according to the cold medium flux size in pipeline better.
The course of work of air-cooling chamber outdoor air conditioner system provided by the invention comprises refrigeration work process and heats the course of work, and its specific works process is as follows:
The refrigerant heated in the course of work is carried for the cycle carries out circulation with " compressor 32-pipe shell type heat exchange-electric expansion valve 52-finned heat exchanger 2-gas-liquid separator 31-compressor 32 ".Particularly, as shown in Figure 2, when air-cooled type air conditioning system be in heat duty time, cross valve is in the duty that compressor 32 delivery outlet and shell-and-tube heat exchanger 4 tube side export d, finned heat exchanger 2 conducting and gas-liquid separator 31 input port conducting, and from being cold liquid in shell side import a input pipe shell heat exchanger 4, now, shell-and-tube heat exchanger 4 uses as condenser, and finned heat exchanger 2 uses as evaporimeter.In carrying out practically process, the HTHP refrigerant after compressor 32 compresses is transported to shell-and-tube heat exchanger 4 from the delivery outlet h of compressor 32 and carries out heat exchange, and the refrigerant of HTHP can make the shell-side fluid temperature in shell-and-tube heat exchanger 4 raise, refrigerant after heat exchange then can be converted to the refrigerant of low temperature, the refrigerant of low-temp low-pressure flows out from the tube side import c of shell-and-tube heat exchanger 4, and flow through the 3rd control valve 57 successively, device for drying and filtering 55, electric expansion valve 52, second control valve 56, enter after distributor 51 on finned heat exchanger 2 and carry out heat exchange evaporation, refrigerant after heat exchange evaporation is transported to the input port f of gas-liquid separator 31 from finned heat exchanger 2 and enters in gas-liquid separator 31 and carry out gas-liquid separation, the input port g entering in compressor 32 that gaseous coolant after gas-liquid separation is transported to compressor 32 from the delivery outlet e of gas-liquid separator 31 compresses, like this, namely one that completes refrigerant heats circulation transport cycle.In heating operations, when the critical value of finned heat exchanger 2 ambient temperature that the required pipeline pressure of the first pressure sensor sense 6 senses lower than critical value or the environment temperature sensor 7 of setting lower than setting, then controller 1 is defaulted as and meets frosting spray condition, thus enabled instruction can be sent to electric control valve 602 and open work to make electric control valve 602, carry out defrost with the liquid by spraying higher temperature to finned heat exchanger 2.
Refrigerant in refrigeration work process is carried for the cycle carries out circulation with " compressor 32-finned heat exchanger 2-electric expansion valve 52-pipe shell type heat exchange-gas-liquid separator 31-compressor 32 ".Particularly, as shown in Figure 3, when air-cooled type air conditioning system is in refrigeration work state, cross valve is in the duty that compressor 32 delivery outlet h and finned heat exchanger 2 conducting, shell-and-tube heat exchanger 4 tube side export d and the f conducting of gas-liquid separator 31 input port, and from being hot liquid in shell side import a input pipe shell heat exchanger 4, now, shell-and-tube heat exchanger 4 uses as evaporimeter, and finned heat exchanger 2 uses as condenser.In carrying out practically process, HTHP refrigerant after compressor 32 compresses is transported to finned heat exchanger 2 from the delivery outlet h of compressor 32 and carries out heat exchange, refrigerant after heat exchange can be converted to the refrigerant of low temperature, the refrigerant of low-temp low-pressure flows through distributor 51 successively, first control valve 54, device for drying and filtering 55, electric expansion valve 52, enter in shell-and-tube heat exchanger 4 from the tube side import c of shell-and-tube heat exchanger 4 after 4th control valve 58 and carry out heat exchange evaporation, refrigerant after heat exchange evaporation is transported to the input port f of gas-liquid separator 31 from tube side outlet d and enters in gas-liquid separator 31 and carry out gas-liquid separation, the input port g entering in compressor 32 that gaseous coolant after gas-liquid separation is transported to compressor 32 from the delivery outlet e of gas-liquid separator 31 compresses, like this, namely a kind of refrigeration cycle transport cycle of refrigerant is completed.In process of refrigerastion, when the critical value of finned heat exchanger 2 ambient temperature that the required pipeline pressure of the first pressure sensor sense 6 senses higher than critical value or the environment temperature sensor 7 of setting higher than setting, then controller 1 is defaulted as and meets high temperature, high-pressure spraying condition, thus enabled instruction can be sent to electric control valve 602 and open work to make electric control valve 602, carry out decrease temperature and pressure with the liquid spraying lower temperature to finned heat exchanger 2 by spray equipment 6.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air-cooled outdoor air conditioner system, comprise refrigerant circulation circuit and the controller in order to control the operation of this air-conditioning system, described refrigerant circulation circuit comprises the finned heat exchanger connected by pipeline, compressibility, shell-and-tube heat exchanger and expansion system, it is characterized in that: this air-conditioning system also comprises spray pipeline, electric control valve and for the spray equipment to described finned heat exchanger ejecting liquid, the two ends of described spray pipeline connect described spray equipment and described shell-and-tube heat exchanger respectively, described electric control valve is located on described spray pipeline, and described electric control valve is electrically connected described controller, described finned heat exchanger comprises spaced fin, is located at the heat exchanger tube on described fin and is located at above described fin or the blower fan of side, and described spray equipment is between described fin and described blower fan.
2. air-cooled outdoor air conditioner system as claimed in claim 1, it is characterized in that: also comprise the first pressure sensor and the environment temperature sensor for detecting described finned heat exchanger ambient temperature, described first pressure sensor is located on the connecting line between described finned heat exchanger and compressibility, and described controller controls the keying of described electric control valve according to the feedback information of described environment temperature sensor and described first pressure sensor.
3. air-cooled outdoor air conditioner system as claimed in claim 1 or 2, it is characterized in that: described shell-and-tube heat exchanger comprises shell side import, shell-side outlet, tube side import and tube side outlet, described shell side import is all connected indoor set with described shell-side outlet, one end of described spray pipeline is other connects described shell-side outlet, described tube side outlet connects described compressibility, and described tube side import connects described expansion system.
4. air-cooled outdoor air conditioner system as claimed in claim 3, it is characterized in that: described shell side import department is provided with the first temperature sensor, described shell-side outlet place is provided with the second temperature sensor.
5. air-cooled outdoor air conditioner system as claimed in claim 2, it is characterized in that: described compressibility comprises gas-liquid separator, compressor and the reversal valve for switching the refrigerant flow direction, the delivery outlet of described gas-liquid separator connects the input port of described compressor, the input port of described gas-liquid separator connects described finned heat exchanger and described shell-and-tube heat exchanger by described reversal valve commutation, and the delivery outlet of described compressor connects described finned heat exchanger and described shell-and-tube heat exchanger by described reversal valve commutation; Described first pressure sensor is located on the connecting line between described reversal valve and described finned heat exchanger.
6. air-cooled outdoor air conditioner system as claimed in claim 5, is characterized in that: described reversal valve is cross valve, its four interfaces respectively pipeline connect described finned heat exchanger, described gas-liquid separator, described compressor and described shell-and-tube heat exchanger.
7. air-cooled outdoor air conditioner system as claimed in claim 1 or 2, it is characterized in that: described expansion system comprises distributor, electric expansion valve and three-temperature sensor, described distributor one end connects described finned heat exchanger, the other end connects one end of described electric expansion valve, the other end of described electric expansion valve connects described shell-and-tube heat exchanger, and described three-temperature sensor is located on the connecting line of described distributor and described electric expansion valve.
8. air-cooled outdoor air conditioner system as claimed in claim 7, it is characterized in that: described distributor connects described electric expansion valve by two branch lines, wherein a branch line is provided with the first control valve and device for drying and filtering, and another branch line is provided with the second control valve.
9. air-cooled outdoor air conditioner system as claimed in claim 8, it is characterized in that: between described first control valve and described shell-and-tube heat exchanger, be also provided with branch road on one side, the one end on described collateral branch road connects described shell-and-tube heat exchanger, and the other end is connected on the connecting line between described first control valve and described device for drying and filtering; And described collateral branch road is provided with the 3rd control valve.
10. air-cooled outdoor air conditioner system as claimed in claim 7, is characterized in that: on the connection branch road of described electric expansion valve and described shell-and-tube heat exchanger, is also provided with the 4th control valve.
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| CN201310216380.8A CN103307820B (en) | 2013-06-03 | 2013-06-03 | Air-cooled outdoor air conditioner system |
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| CN201310216380.8A CN103307820B (en) | 2013-06-03 | 2013-06-03 | Air-cooled outdoor air conditioner system |
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| CN103307820B true CN103307820B (en) | 2015-07-29 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108954899B (en) * | 2018-09-28 | 2024-02-27 | 瀚润联合高科技发展（北京）有限公司 | Wet film type low temperature air-cooled heat pump multi-connected unit |
| CN110073983A (en) * | 2019-03-01 | 2019-08-02 | 青岛沃润达新能源科技有限公司 | The meat chicken cultivation humidity control system and its control method constituted based on air-heater |
| CN110440485A (en) * | 2019-08-21 | 2019-11-12 | 深圳市辉宏技术有限公司 | A kind of heat pump system with defrosting function |
| CN111780294B (en) * | 2020-06-09 | 2023-07-18 | 青岛海尔空调电子有限公司 | Air conditioning unit with spray cooling system |
| CN111780295B (en) * | 2020-06-09 | 2023-02-24 | 青岛海尔空调电子有限公司 | Air conditioning unit with spray cooling system |
| CN112984855A (en) * | 2021-03-31 | 2021-06-18 | 广东积微科技有限公司 | Heat pump air conditioning system and control logic |
| CN114963364A (en) * | 2022-05-31 | 2022-08-30 | 宁波奥克斯电气股份有限公司 | Module unit spraying system, control method and device and module unit |
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