CN204678486U - A kind of air-conditioning system - Google Patents
A kind of air-conditioning system Download PDFInfo
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- CN204678486U CN204678486U CN201420836032.0U CN201420836032U CN204678486U CN 204678486 U CN204678486 U CN 204678486U CN 201420836032 U CN201420836032 U CN 201420836032U CN 204678486 U CN204678486 U CN 204678486U
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Abstract
The utility model discloses a kind of air-conditioning system, described air-conditioning system comprises: M off-premises station, for providing cold-producing medium, described M is positive integer, described off-premises station comprises condenser, compressor and cross valve, and the port of export of described condenser, described compressor is connected with three valve ports of described cross valve respectively with entrance point; Indoor units, receive the cold-producing medium provided by a described M off-premises station, described indoor units comprises N number of indoor set, described N be more than or equal to 2 integer; K reservoir, for storing described cold-producing medium, described K be more than or equal to 1 integer; Tracheae and liquid pipe, described tracheae connects the 4th valve port and a described M off-premises station of described cross valve, described liquid pipe connects a described M off-premises station and described condenser, and described liquid pipe is communicated with a described K reservoir, and described tracheae is set around on the outer surface of a described K reservoir.
Description
Technical field
The utility model relates to air-conditioning technique field, particularly relates to a kind of air-conditioning system.
Background technology
Air-conditioning and air regulator (room air conditioner), be a kind of to room, space or region provide the equipment of air after treatment.Its function is temperature to air in this room or enclosure space, region, humidity, the parameter such as cleanliness factor and air velocity regulate, to meet the requirement of human comfort or technical process.Traditionally, the air-conditioner as refrigeration plant is known, and wherein indoor set is connected with off-premises station by refrigerant tubing.
Air-conditioning is divided into single cold air-conditioning and air conditioner for both cooling and heating, and its operation principle is identical, and air conditioner for both cooling and heating is only be provided with cross valve on compressor exhaust pipe, to change the flow direction of cold-producing medium, can realize the conversion of refrigeration or heat-production functions.The cold-producing medium that air-conditioning generally uses is freon.The characteristic of freon is: when becoming liquid state from gaseous state, discharges a large amount of heats; And when being gaseous state by liquid state, a large amount of heats can be absorbed.Air-conditioning be exactly accordingly principle design.
The refrigerant compression of gaseous state is the gaseous refrigerant of HTHP by compressor, becomes the liquid refrigerant of normal temperature high voltage after then delivering to condenser (off-premises station) heat radiation, so off-premises station produces by boasting is hot blast.The liquid refrigerant of normal temperature high voltage enters evaporimeter (indoor set) by throttling arrangements such as capillaries, pressure reduces, form the gas-liquid two-phase cold-producing medium of low-temp low-pressure, wherein cold-producing medium endothermic gasification, become the cold-producing medium of gaseous state low temperature, thus absorb a large amount of heats, evaporimeter will turn cold, the air of indoor is blown over by the fan of indoor set from evaporimeter, so indoor set produces by boasting is exactly cold wind; Will water droplet be condensed into after water vapour in air runs into cold evaporimeter, spill out along water pipe, the reason of Here it is air-conditioning has dehumidification function.
During air-conditioning heating, cross valve commutates, and makes cold-producing medium contrary with during refrigeration at the flow direction of condenser and evaporimeter, so when heating, outdoor blows is cold wind, what indoor set blew is hot blast.
This kind of by low temperature or high temperature refrigerant directly and room air contact heat-exchanging for playing air-conditioner, reduce the advantage of heat transfer temperature difference, simultaneously in order to prevent off-premises station number of units from too much affecting architectural appearance, and realize using flexibly, reducing air conditioning energy consumption, develop at present and adopted one or more off-premises station to carry out the multi-connected air conditioning system of heat supply or cooling to multiple indoor set transmission & distribution cold-producing medium, be called for short multi-connected machine.During multi-connected machine heating operation, know from experience due to high pressure gas and enter concentrated tracheae and enter in each indoor set, if indoor set does not run, these gaseous refrigerants will be stored in these indoor sets, therefore the cold-producing medium filled in systems in which all can not participate in circulation; And when refrigerating operaton, indoor set is in low-pressure side, in the indoor set do not opened, do not store cold-producing medium, make all cold-producing mediums participate in circulation.Therefore, the refrigerant charge needed during multi-connected machine heating operation is than many during refrigerating operaton, therefore the cold-producing medium in actual multiple on-line system is then as the criterion with heating mode and fills, thus refrigeration when causing multi-connected machine refrigerating operaton reduces, power increases, and energy consumption strengthens.
Utility model content
The application provides a kind of air-conditioning system, solve the unmatched technical problem of refrigerant charge needed for multi-connected machine refrigeration, heating operation in prior art, reach and ensure that multi-connected machine is freezing and energy Effec-tive Function equal when heating, and meets the effects of demand of user to air-conditioning system simultaneously.
The application provides a kind of air-conditioning system, described air-conditioning system comprises: M off-premises station, for providing cold-producing medium, described M is positive integer, described off-premises station comprises condenser, compressor and cross valve, and the port of export of described condenser, described compressor is connected with three valve ports of described cross valve respectively with entrance point; Indoor units, receive the cold-producing medium provided by a described M off-premises station, described indoor units comprises N number of indoor set, described N be more than or equal to 2 integer; K reservoir, for storing described cold-producing medium, described K be more than or equal to 1 integer; Tracheae and liquid pipe, described tracheae connects the 4th valve port and a described M off-premises station of described cross valve, described liquid pipe connects a described M off-premises station and described condenser, and described liquid pipe is communicated with a described K reservoir, and described tracheae is set around on the outer surface of a described K reservoir.
Preferably, in a described K reservoir each reservoir outer surface on be provided with groove, described tracheae is arranged in described groove.
Preferably, the connected entrance of described liquid pipe and described reservoir is positioned at the bottom of described reservoir, middle part or top.
Preferably, described K equals described M.
Preferably, described liquid pipe is provided with the first stop valve and filter, described reservoir is between described first stop valve and described filter.
Preferably, described indoor units each indoor set comprise a choke valve.
Preferably, described choke valve is specially electric expansion valve.
Preferably, check valve is provided with between the port of export of described compressor and described cross valve.
Preferably, be provided with oil eliminator between the port of export of described compressor and described cross valve, described oil eliminator is communicated with the entrance point of described compressor.
Preferably, described tracheae is provided with the second stop valve.
Preferably, described air-conditioning system also comprises K switch, and a described K switch is arranged between a described K reservoir and described liquid pipe respectively.
Preferably, described switch is specially magnetic valve.
Preferably, described air-conditioning system also comprises detecting unit, judging unit and control unit, and described detecting unit is for detecting the present mode of operation of described air-conditioning system; Described judging unit is for judging whether described present mode of operation is defrosting mode, obtains a judged result; Described control unit is used for when described judged result shows that described present mode of operation is defrosting mode, controls described magnetic valve and disconnects.
The application's beneficial effect is as follows:
Above-mentioned air-conditioning system is provided with the reservoir be connected with liquid pipe, and tracheae is set around on the outer surface of a described K reservoir, therefore, when flue temperature is lower than liquid line temperature, liquid refrigerant will be stored in reservoir, and the cold-producing medium being stored in described reservoir will not participate in kind of refrigeration cycle; When flue temperature is higher than liquid line temperature, liquid refrigerant in reservoir will by thermal evaporation, pressure raises, enter refrigeration system, participate in kind of refrigeration cycle, thus multi-connected machine refrigeration, the unmatched technical problem of refrigerant charge needed for heating operation in solution prior art, reach ensure multi-connected machine freeze with all can Effec-tive Function when heating, meet the effects of demand of user to air-conditioning system simultaneously.
That is, at multi-connected machine in cooling mode, tracheae is air intake duct, indoor set is in low-pressure side, does not store cold-producing medium in the indoor set do not opened, and unnecessary cold-producing medium can be stored automatically in described reservoir, and circulation can not be participated in, thus solving multi-connected machine refrigerating operaton in prior art, refrigerant charge is too much, causes the technical problem that the refrigeration of air-conditioning system reduces, power increases; In a heating mode, because tracheae is the tracheae of high pressure-temperature, because the liquid refrigerant in described reservoir is by thermal evaporation, pressure raises, rapidly liquid refrigerant will be extruded reservoir, and participate in kind of refrigeration cycle, the problem of needs more refrigerant charges when heating to meet.
In addition, in the prior art, in the technical scheme of described tracheae through described reservoir, perforation place penetrating and pass a described K reservoir at described tracheae is needed to be provided with potted component, or the direct high-temperature soldering of described tracheae is in perforation place of a described K reservoir, to prevent from leaving gap between perforation place of a described K reservoir and described tracheae, prevent the cold-producing medium in a described K reservoir from flowing out from this perforation.And by being set around by described tracheae on the outer surface of described reservoir, avoiding and potted component or welding are set, thus reduce manufacturing cost, simultaneously, owing to not needing high-temperature soldering, thus avoid in welding process or failure welding occurs the risk revealed improving the reliability of product.
By the connected entrance of described liquid pipe and described reservoir being arranged on the bottom of described reservoir, so that the cold-producing medium of liquid state effectively flows out the circulation participating in freezing and heating.
By arranging check valve between the described port of export and described cross valve, the cold-producing medium of the high pressure gaseous of being discharged by the described port of export is made to be merely able to single-way moving.
By arranging switch between described liquid pipe and described reservoir, when above-mentioned air-conditioning system is converted to defrosting mode from heating mode, switch is in closed condition, stops the cold-producing medium in described liquid pipe to enter in described reservoir, make the cold-producing medium participating in circulation more, promote defrosting effect.
Detect the present mode of operation of air-conditioning system by arranging detecting unit, judging unit judges present mode of operation, and control unit according to the folding of present mode of operation Controlling solenoid valve, thus realizes automatically controlling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application first better embodiment air-conditioning system;
Fig. 2 is the partial enlarged drawing of air-conditioning system in Fig. 1;
Fig. 3 is the partial enlarged drawing of the application second better embodiment air-conditioning system;
Fig. 4 is the structural representation of the application the 3rd better embodiment air-conditioning system;
Fig. 5 is the structural representation of the application the 4th better embodiment air-conditioning system.
Detailed description of the invention
The embodiment of the present application is by providing a kind of air-conditioning system, solve the unmatched technical problem of refrigerant charge needed for multi-connected machine refrigeration, heating operation in prior art, reach and ensure that multi-connected machine is freezing and energy Effec-tive Function equal when heating, and meets the effects of demand of user to air-conditioning system simultaneously.
Technical scheme in the embodiment of the present application is for solving the problems of the technologies described above, and general thought is as follows:
A kind of air-conditioning system, described air-conditioning system comprises: M off-premises station, and for providing cold-producing medium, described M is positive integer, described off-premises station comprises condenser, compressor and cross valve, and the port of export of described condenser, described compressor is connected with three valve ports of described cross valve respectively with entrance point; Indoor units, receive the cold-producing medium provided by a described M off-premises station, described indoor units comprises N number of indoor set, described N be more than or equal to 2 integer; K reservoir, for storing described cold-producing medium, described K be more than or equal to 1 integer; Tracheae and liquid pipe, described tracheae connects the 4th valve port and a described M off-premises station of described cross valve, described liquid pipe connects a described M off-premises station and described condenser, and described liquid pipe is communicated with a described K reservoir, and described tracheae is set around on the outer surface of a described K reservoir.
Above-mentioned air-conditioning system is provided with the reservoir be connected with liquid pipe, and tracheae is set around on the outer surface of a described K reservoir, therefore, when flue temperature is lower than liquid line temperature, liquid refrigerant will be stored in reservoir, and the cold-producing medium being stored in described reservoir will not participate in kind of refrigeration cycle; When flue temperature is higher than liquid line temperature, liquid refrigerant in reservoir will by thermal evaporation, pressure raises, enter refrigeration system, participate in kind of refrigeration cycle, thus multi-connected machine refrigeration, the unmatched technical problem of refrigerant charge needed for heating operation in solution prior art, reach ensure multi-connected machine freeze with all can Effec-tive Function when heating, meet the effects of demand of user to air-conditioning system simultaneously.
In addition, in the prior art, in the technical scheme of described tracheae through described reservoir, perforation place penetrating and pass a described K reservoir at described tracheae is needed to be provided with potted component, or the direct high-temperature soldering of described tracheae is in perforation place of a described K reservoir, to prevent from leaving gap between perforation place of a described K reservoir and described tracheae, prevent the cold-producing medium in a described K reservoir from flowing out from this perforation.And by being set around by described tracheae on the outer surface of described reservoir, avoiding and potted component or welding are set, thus reduce manufacturing cost, simultaneously, owing to not needing high-temperature soldering, thus avoid in welding process or failure welding occurs the risk revealed improving the reliability of product.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
Embodiment one
As shown in Figure 1, be the structural representation of the application first better embodiment air-conditioning system 100.Described air-conditioning system 100 comprises: M off-premises station 10, indoor units 20, a K reservoir 30, tracheae 40 and liquid pipe 50.
A described M off-premises station 10 is for providing cold-producing medium, described M is positive integer, that is, described off-premises station 10 can be one or more, in the present embodiment, be one for off-premises station 10 and be described, in other embodiments, the number of off-premises station 10 is not limited to one, can arrange the number of off-premises station 10 as required.Described cold-producing medium is constantly circulate in refrigeration or heating and change to realize the operation material freezing or heat by the state of itself, and particularly, the first cold-producing medium can be fluorine Lyons, R410A etc.
Described off-premises station 10 comprises cross valve 11, compressor 12 and condenser 13.Cross valve 11 by switching first valve port 111, second valve port 112, connected relation between the 3rd valve port 113 and the 4th valve port 114, to change the flow direction of the first cold-producing medium.When heating, the first valve port 111 is communicated with the second valve port 112, and the 3rd valve port 113 is communicated with the 4th valve port 114; When freezing, when the first valve port 111 is communicated with the 4th valve port 114, the second valve port 112 is communicated with the 3rd valve port 113.
First cold-producing medium of compressor 12 for by the first refrigerant compression receiving gaseous state being high pressure gaseous.The entrance point 121 of compressor 12 connects with the 3rd valve port 113, and the port of export 122 is connected with described cross valve 11.
Condenser 13 is communicated with the 4th valve port 114 of cross valve 11, when freezing, can dispel the heat, become the first cold-producing medium of middle temperature high-pressure liquid to high pressure gaseous first cold-producing medium received; When heating, outwardly can absorb heat, liquid state first cold-producing medium received being evaporated, makes the first refrigerants vaporize, becoming gaseous state first cold-producing medium.
Described indoor units 20 for receiving the cold-producing medium provided by a described M off-premises station 10, to realize refrigeration or the effect that heats to a space.Indoor units 20 comprises N number of indoor set 21, described N be more than or equal to 2 integer, that is, this air-conditioning system 100 comprises multiple indoor set 21, and the number of described indoor set 21 can be arranged according to specific needs.
A described K reservoir 30 for storing described cold-producing medium, described K be more than or equal to 1 integer.That is, the number of reservoir 30 can be one, also can be multiple, in the present embodiment, the number of described reservoir 30 is one, in other embodiments, the number of reservoir 30 can arbitrarily be arranged, and with the number of described off-premises station 10 without direct relation.
Consult Fig. 2 simultaneously, described tracheae 40 connects second valve port 112 and a described M off-premises station 10 of described cross valve 11, described liquid pipe 50 connects a described M off-premises station 10 and described condenser 13, to form refrigerant circulation loop, described liquid pipe 50 is communicated with a described K reservoir 30, described tracheae 40 is set around on the outer surface of a described K reservoir 30, to contact with the cold-producing medium be stored in described reservoir 30, and carries out energy exchange.
Described tracheae 40 is for transmitting described cold-producing medium during gaseous state, and described liquid pipe 50 is for transmitting described cold-producing medium during liquid state.
The operation logic of above-mentioned air-conditioning system 100 is as follows:
When freezing, first valve port 111 of cross valve 11 is communicated with the 4th valve port 114, second valve port 112 is communicated with the 3rd valve port 113, compressor 12 is for being the cold-producing medium of high pressure gaseous by the refrigerant compression receiving gaseous state, and the gaseous refrigerant of HTHP enters condenser 13 by the port of export 122, first valve port 111, the 4th valve port 114.Condenser 13 dispels the heat to the high temperature and high pressure gaseous refrigerant received becomes the cold-producing medium of middle temperature high-pressure liquid, and liquid refrigerant enters described indoor units 20 by liquid pipe 50.After cold-producing medium enters indoor units 20, because space increases, pressure reduces, and refrigerant suction external heat is vaporized, and becomes the cold-producing medium of gaseous state, makes the temperature of surrounding air reduce simultaneously, thus reach the effect of refrigeration.Gaseous refrigerant is recycled in compressor 12 by tracheae 40.Now, tracheae 40 is air intake duct, indoor set 21 is in low-pressure side, if part indoor set 21 is not opened, then refrigerant amount is now many compared with the refrigerant amount needed, cold-producing medium is not stored in the indoor set do not opened, unnecessary refrigerant amount meeting autostore in reservoir 30, and does not participate in circulation, thus solves multi-connected machine refrigerating operaton in prior art, refrigerant charge is too much, causes the technical problem that the refrigeration of air-conditioning system reduces, power increases.
When heating, first valve port 111 is communicated with the second valve port 112,3rd valve port 113 is communicated with the 4th valve port 114, compressor 12 is for being the cold-producing medium of high pressure gaseous by the refrigerant compression receiving gaseous state, the gaseous refrigerant of HTHP by the port of export 122, first valve port 111, second valve port 112, then enters indoor units 20 by tracheae 40.When the gaseous refrigerant of HTHP is by tracheae 40, the cold-producing medium of the high pressure gaseous that the cold-producing medium stored in described reservoir 30 and tracheal strips pass through carries out heat exchange, thus the refrigerant heats stored in described reservoir 30 is evaporated, pressure raises, described cold-producing medium flows out described reservoir 30, and participates in circulation.The gaseous refrigerant heat release to external world of the HTHP that indoor units 20 receives, becomes liquid refrigerant, and ambient air temperature raises simultaneously, thus reaches the effect heated.Liquid refrigerant, by liquid pipe 50, enters condenser 13, and the liquid refrigerant entering condenser 13 outwardly absorbs heat, and evaporates, and liquid refrigerant is vaporized and becomes gaseous refrigerant, then looped back in compressor 12 by the 4th valve port 114, the 3rd valve port 113.That is, time in a heating mode, tracheae 40 is the tracheae of high pressure-temperature, because the liquid refrigerant in described reservoir 30 is by thermal evaporation, pressure raises, and rapidly liquid refrigerant will be extruded reservoir, and participate in kind of refrigeration cycle, the problem of needs more refrigerant charges when heating to meet.
Above-mentioned air-conditioning system is provided with the reservoir 30 be connected with liquid pipe, and tracheae 40 is set around on the outer surface of described reservoir 30, therefore, when tracheae 40 temperature is lower than liquid pipe 50 temperature, liquid refrigerant will be stored in reservoir 30, and the cold-producing medium being stored in described reservoir 30 will not participate in kind of refrigeration cycle; When tracheae 40 temperature is higher than liquid pipe 50 temperature, liquid refrigerant in reservoir 30 will by thermal evaporation, pressure raises, enter refrigeration system, participate in kind of refrigeration cycle, thus multi-connected machine refrigeration, the unmatched technical problem of refrigerant charge needed for heating operation in solution prior art, reach ensure multi-connected machine freeze with all can Effec-tive Function when heating, meet the effects of demand of user to air-conditioning system simultaneously.
That is, at multi-connected machine in cooling mode, tracheae 40 is air intake duct, indoor set 21 is in low-pressure side, does not store cold-producing medium in the indoor set 21 do not opened, and unnecessary cold-producing medium can be stored automatically in described reservoir 30, and circulation can not be participated in, thus solving multi-connected machine refrigerating operaton in prior art, refrigerant charge is too much, causes the technical problem that the refrigeration of air-conditioning system reduces, power increases; In a heating mode, because tracheae is the tracheae of high pressure-temperature, because the liquid refrigerant in described reservoir is by thermal evaporation, pressure raises, rapidly liquid refrigerant will be extruded reservoir, and participate in kind of refrigeration cycle, the problem of needs more refrigerant charges when heating to meet.
In addition, in the prior art, in the technical scheme of described tracheae through described reservoir, perforation place penetrating and pass a described K reservoir 30 at described tracheae 40 is needed to be provided with potted component, or the direct high-temperature soldering of described tracheae 40 is in perforation place of a described K reservoir 30, to prevent from leaving gap between perforation place of a described K reservoir and described tracheae 40, prevent the cold-producing medium in a described K reservoir 30 from flowing out from this perforation.And by being set around on the outer surface of described reservoir 30 by described tracheae 40, avoiding and potted component or welding are set, thus reduce manufacturing cost, simultaneously, owing to not needing high-temperature soldering, thus avoid in welding process or failure welding occurs the risk revealed improving the reliability of product.
Particularly, described air-conditioning system 100 also comprises K switch 90, a described K switch 90 is arranged between a described K reservoir 30 and described liquid pipe 50 respectively, described switch 90 can be in conducting state or closed condition, be provided for described reservoir 30 and the conducting of described liquid pipe 50 or disconnection, allow or stop the cold-producing medium in described liquid pipe 50 to enter in described reservoir 30.
When heating mode is converted to defrosting mode, first valve port 111 of cross valve 11 is communicated with the 4th valve port 114, second valve port 112 is communicated with the 3rd valve port 113, closing switch 90, the cold-producing medium in described liquid pipe 50 is stoped to enter in described reservoir 30, make the coolant quantity participating in circulation more, promote defrosting effect.
Particularly, described switch 90 can be manually-operated gate, also can be magnetic valve.
Particularly, described air-conditioning system 100 also comprises detecting unit 91, judging unit 93 and control unit 92, and described detecting unit 91 is for detecting the present mode of operation of described air-conditioning system 100.Described judging unit 93 is for judging whether described present mode of operation is defrosting mode, obtains a judged result.Described control unit 92, for when described judged result shows that described present mode of operation is defrosting mode, controls described magnetic valve and disconnects.In the present embodiment, described present mode of operation be refrigeration mode or heating mode time, described control unit 92 controls described solenoid valve conduction, allow cold-producing medium enter in reservoir 30; When described present mode of operation is defrosting mode, described control unit controls described magnetic valve and disconnects, and stops cold-producing medium to enter in reservoir 30.Detect the present mode of operation of air-conditioning system 100 by arranging detecting unit 91, judging unit 93 judges present mode of operation, and control unit 92 according to the folding of present mode of operation Controlling solenoid valve, thus realizes automatically controlling.
Particularly, described liquid pipe 50 and the connected entrance of described reservoir 30 are positioned at the bottom of described reservoir 30, and certainly, in other embodiments, described liquid pipe 50 and the connected entrance of described reservoir 30 also can be positioned at middle part or the top of described reservoir 30.By described liquid pipe 50 and the connected entrance of described reservoir 30 being arranged on the bottom of described reservoir 30, so that the cold-producing medium of liquid state effectively flows out the circulation participating in freezing and heating.
Particularly, described liquid pipe 50 is provided with the first stop valve 60 and filter 70, described reservoir 30 is between described first stop valve 60 and described filter 70.
Particularly, each indoor set 21 of described indoor units 20 comprise a choke valve, described choke valve is specially electric expansion valve.
Particularly, check valve 14 is provided with between the port of export 122 of described compressor 12 and described cross valve 11.By arranging check valve 14 between the described port of export 122 and described cross valve 11, the cold-producing medium of the high pressure gaseous of being discharged by the described port of export 122 is made to be merely able to single-way moving.
Particularly, be provided with oil eliminator 15 between the port of export 122 of described compressor 12 and described cross valve 11, described oil eliminator 15 is communicated with the entrance point 121 of described compressor 12.Described tracheae 40 is provided with the second stop valve 80.
Particularly, described tracheae 40 is set around part helix tubulose on the outer surface of described reservoir 30 or other shapes.
Above-mentioned air-conditioning system is provided with the reservoir be connected with liquid pipe 50, and tracheae 40 is set around on the outer surface of described reservoir 30, therefore, when tracheae 40 temperature is lower than liquid pipe 50 temperature, liquid refrigerant will be stored in reservoir 30, and the cold-producing medium being stored in described reservoir 30 will not participate in kind of refrigeration cycle; When tracheae 40 temperature is higher than liquid pipe 50 temperature, liquid refrigerant in reservoir 30 will by thermal evaporation, pressure raises, enter refrigeration system, participate in kind of refrigeration cycle, thus multi-connected machine refrigeration, the unmatched technical problem of refrigerant charge needed for heating operation in solution prior art, reach ensure multi-connected machine freeze with all can Effec-tive Function when heating, meet the effects of demand of user to air-conditioning system simultaneously.
That is, at multi-connected machine in cooling mode, tracheae 40 is air intake duct, indoor set 21 is in low-pressure side, does not store cold-producing medium in the indoor set do not opened, and unnecessary cold-producing medium can be stored automatically in described reservoir, and circulation can not be participated in, thus solving multi-connected machine refrigerating operaton in prior art, refrigerant charge is too much, causes the technical problem that the refrigeration of air-conditioning system reduces, power increases; In a heating mode, because tracheae is the tracheae of high pressure-temperature, because the liquid refrigerant in described reservoir is by thermal evaporation, pressure raises, rapidly liquid refrigerant will be extruded reservoir, and participate in kind of refrigeration cycle, the problem of needs more refrigerant charges when heating to meet.
By described liquid pipe 50 and the connected entrance of described reservoir 30 being arranged on the bottom of described reservoir 30, so that the cold-producing medium of liquid state effectively flows out the circulation participating in freezing and heating.
By arranging check valve 14 between the described port of export 122 and described cross valve 11, the cold-producing medium of the high pressure gaseous of being discharged by the described port of export 122 is made to be merely able to single-way moving.
By arranging switch between described liquid pipe and described reservoir, when above-mentioned air-conditioning system is converted to defrosting mode from heating mode, switch is in closed condition, stops the cold-producing medium in described liquid pipe to enter in described reservoir, make the cold-producing medium participating in circulation more, promote defrosting effect.
Detect the present mode of operation of air-conditioning system by arranging detecting unit, judging unit judges present mode of operation, and control unit according to the folding of present mode of operation Controlling solenoid valve, thus realizes automatically controlling.
Embodiment two
Based on the design of same utility model, the application also provides a kind of air-conditioning system.As shown in Figure 3, the air-conditioning system in present embodiment and the air-conditioning system 100 in embodiment one are distinguished and are only that the shape of described reservoir 30 is different.In embodiment one, the shape of described reservoir 30 is without change, and described tracheae 40 is directly set around on the outer surface of described reservoir 30.And in the present embodiment, in order to increase the heat exchanger effectiveness between the liquid in described tracheae 40 and reservoir 30, described reservoir 30 being provided with groove 31, described tracheae 40 is arranged in described groove 31.Preferably, the shape of described groove 31 is corresponding with the shape of described tracheae 40.
By being arranged in described groove 31 by described tracheae 40, to make the contact area between described tracheae 40 and described reservoir 30 increase, the heat exchanger effectiveness between the liquid in described tracheae 40 and described reservoir 30 is improved.
Embodiment three
Based on the design of same utility model, the application also provides a kind of air-conditioning system 200.As shown in Figure 4, be the structural representation of the application the 3rd better embodiment air-conditioning system 200.Described air-conditioning system 200 is with the difference of described air-conditioning system 100: the number of described off-premises station 10 is two, and the liquid pipe 50 that each off-premises station 10 of described two off-premises stations 10 is connected with described indoor units 20 is all connected with reservoir 30, is provided with a switch 90 between each reservoir 30 and liquid pipe.
That is, described air-conditioning system 200 comprises two off-premises stations, 10, two reservoirs 30, described each reservoir 30 for be connected the liquid pipe 50 of described each off-premises station 10 with described indoor units 20 and be communicated with, described each switch 90 is arranged between described each reservoir 30 and liquid pipe 50.
The present embodiment illustrates that the number of described off-premises station 10 is not limited to the situation of an off-premises station 10 in embodiment one by way of example, the number of off-premises station 10 also can be two, based on same thought, the number of off-premises station 10 also can be three, four, five or more.
Embodiment four
Based on the design of same utility model, the application also provides a kind of air-conditioning system 300.As shown in Figure 5, be the structural representation of the application the 4th better embodiment air-conditioning system 300.Described air-conditioning system 300 is with the difference of described air-conditioning system 100: the number of described off-premises station 10 is two, described reservoir 30 be connected described two off-premises stations 10 and be connected with the liquid pipe 50 of described indoor units 20, be provided with switch 90 between described reservoir 30 and liquid pipe 50.
The present embodiment illustrates that described reservoir 30 connects with the liquid pipe 50 being connected described multiple off-premises station 10 and described indoor units 20 at described off-premises station 10 for time multiple by way of example.In addition, conceive based on same utility model, when off-premises station 10 is multiple, also can arrange reservoir 30 on the part off-premises station 10 connected in described multiple off-premises station 10 with the liquid pipe 50 of described indoor units 20, the number of reservoir 30 can sets itself as required.In addition, the number of switch 90 is identical with the number of reservoir 30, that is, is provided with switch 90 between each reservoir 30 and liquid pipe 50.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (13)
1. an air-conditioning system, is characterized in that, described air-conditioning system comprises:
M off-premises station, for providing cold-producing medium, described M is positive integer, and described off-premises station comprises condenser, compressor and cross valve, and the port of export of described condenser, described compressor is connected with three valve ports of described cross valve respectively with entrance point;
Indoor units, receive the cold-producing medium provided by a described M off-premises station, described indoor units comprises N number of indoor set, described N be more than or equal to 2 integer;
K reservoir, for storing described cold-producing medium, described K be more than or equal to 1 integer;
Tracheae and liquid pipe, described tracheae connects the 4th valve port and a described M off-premises station of described cross valve, described liquid pipe connects a described M off-premises station and described condenser, and described liquid pipe is communicated with a described K reservoir, and described tracheae is set around on the outer surface of a described K reservoir.
2. air-conditioning system as claimed in claim 1, is characterized in that, in a described K reservoir each reservoir outer surface on be provided with groove, described tracheae is arranged in described groove.
3. air-conditioning system as claimed in claim 1 or 2, it is characterized in that, the connected entrance of described liquid pipe and described reservoir is positioned at the bottom of described reservoir, middle part or top.
4. air-conditioning system as claimed in claim 1 or 2, it is characterized in that, described K equals described M.
5. air-conditioning system as claimed in claim 1 or 2, it is characterized in that, described liquid pipe is provided with the first stop valve and filter, and described reservoir is between described first stop valve and described filter.
6. air-conditioning system as claimed in claim 1 or 2, is characterized in that, each indoor set of described indoor units comprise a choke valve.
7. air-conditioning system as claimed in claim 6, it is characterized in that, described choke valve is specially electric expansion valve.
8. air-conditioning system as claimed in claim 1 or 2, is characterized in that, be provided with check valve between the port of export of described compressor and described cross valve.
9. air-conditioning system as claimed in claim 1 or 2, it is characterized in that, be provided with oil eliminator between the port of export of described compressor and described cross valve, described oil eliminator is communicated with the entrance point of described compressor.
10. air-conditioning system as claimed in claim 1 or 2, is characterized in that, described tracheae is provided with the second stop valve.
11. air-conditioning systems as claimed in claim 1, it is characterized in that, described air-conditioning system also comprises K switch, and a described K switch is arranged between a described K reservoir and described liquid pipe respectively.
12. air-conditioning systems as claimed in claim 11, it is characterized in that, described switch is specially magnetic valve.
13. air-conditioning systems as claimed in claim 12, it is characterized in that, described air-conditioning system also comprises detecting unit, judging unit and control unit, and described detecting unit is for detecting the present mode of operation of described air-conditioning system; Described judging unit is for judging whether described present mode of operation is defrosting mode, obtains a judged result; Described control unit is used for when described judged result shows that described present mode of operation is defrosting mode, controls described magnetic valve and disconnects.
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|---|---|---|---|
| CN201420836032.0U CN204678486U (en) | 2014-08-06 | 2014-12-25 | A kind of air-conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420441765 | 2014-08-06 | ||
| CN2014204417654 | 2014-08-06 | ||
| CN201420836032.0U CN204678486U (en) | 2014-08-06 | 2014-12-25 | A kind of air-conditioning system |
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| CN204678486U true CN204678486U (en) | 2015-09-30 |
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| CN (1) | CN204678486U (en) |
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