CN205403232U - Multi-split device and system - Google Patents
Multi-split device and system Download PDFInfo
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- CN205403232U CN205403232U CN201620157287.3U CN201620157287U CN205403232U CN 205403232 U CN205403232 U CN 205403232U CN 201620157287 U CN201620157287 U CN 201620157287U CN 205403232 U CN205403232 U CN 205403232U
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- 239000003507 refrigerant Substances 0.000 claims abstract description 54
- 239000007921 spray Substances 0.000 claims description 71
- 239000007788 liquid Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 15
- 230000002411 adverse Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 15
- 238000005057 refrigeration Methods 0.000 description 12
- 238000004781 supercooling Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 9
- 238000002835 absorbance Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model provides a many online devices and system. The multi-split device comprises a compressor, an outdoor heat exchanger and an indoor heat exchanger which are communicated with the compressor, and a refrigerant main path which is communicated with the outdoor heat exchanger and the indoor heat exchanger, wherein the refrigerant main path penetrates through a subcooler; and the multi-interface control valve is arranged on the refrigerant branch circuit and is used for controlling the refrigerant to flow reversely in the refrigerant main circuit and the refrigerant branch circuit in the subcooler. The multi-split device utilizes the refrigerant branch and the multi-interface control valve to enable the refrigerant to realize countercurrent in the subcooler, so that the larger average temperature difference can be realized in the heating process or the refrigerating process, and the purpose of improving the refrigerating and heating efficiency by utilizing the same device is achieved.
Description
Technical field
This utility model relates to heating-cooling equipment field, in particular to a kind of multi-connected machine device and system.
Background technology
Present stage, multi-connected machine product, its energy saving and efficiency increasing technology, can be described as with rapid changepl. never-ending changes and improvements.In each period, in each stage, multi-connected machine product all can obtain significant progress.Especially along with the use gradually of high-efficiency frequency conversion air injection enthalpy-increasing compressor, the another technological innovation taken turns also arrives.
Now, a lot of Domestic Air-condition producers, still use subcooler to improve the degree of supercooling of system under cryogenic conditions, thus improving coefficient of performance of refrigerating EER.Adopt spray enthalpy compressor (EVI compressor) can improve under the premise of system heating capacity at the same time, if in conjunction with subcooler, heating capacity can be significantly provided to reach to improve the purpose heating COP, the EVI multiple on-line system type shown in Fig. 1 is such as adopted to heat and freeze, this multiple on-line system includes: compressor 10, outdoor heat exchanger 20, indoor heat exchanger 30, subcooler 50 and gas-liquid separator 100, wherein, utilize system cross valve 80, cross low temperature valve 68 and increase enthalpy valve 91 and control refrigeration and heat the flow direction of the cold-producing medium flowed out by EVI compressor in various process.In subcooler, generally adopting refrigeration following current to heat the scheme of adverse current at present, for refrigeration, currently existing scheme refrigeration weakens, i.e. existing system degree of supercooling, big not as the degree of supercooling of refrigeration adverse current, diminishes thus coefficient of refrigerating performance is compared.
Current each producer is intended to multiple on-line system and no matter freezes or heat and be intended to reach maximum mean temperature difference, to improve refrigeration and heating efficiency.
Utility model content
Main purpose of the present utility model is in that to provide a kind of multi-connected machine device and system, to solve the problem that multiple on-line system of the prior art can not improve refrigeration and heating efficiency simultaneously.
To achieve these goals, according to an aspect of the present utility model, provide a kind of multi-connected machine device, including compressor, the outdoor heat exchanger connected with compressor and indoor heat exchanger, the cold-producing medium main road of communication chamber external heat exchanger and indoor heat exchanger, and cold-producing medium main road is arranged through subcooler, multi-connected machine device also includes: cold-producing medium branch road, and the cold-producing medium main road between one end with subcooler and outdoor heat exchanger connects, the other end connects with compressor, and cold-producing medium branch road is arranged through subcooler；And multiplex roles controls valve, it is arranged on cold-producing medium branch road, for controlling cold-producing medium cold-producing medium main road in subcooler and cold-producing medium branch road adverse current.
Further, pipeline section in subcooler of above-mentioned cold-producing medium branch road and cold-producing medium main road flow setting.
Further, it is cross valve that above-mentioned multiplex roles controls valve, and cross valve has D1 mouth, E1 mouth, S1 mouth and four interfaces of C1 mouth, and cold-producing medium branch road includes: first section, and one end connects with cold-producing medium main road, and the other end connects with D1 mouth；Second section, one end connects with E1 mouth；3rd section, one end connects with C1 mouth；4th section, one end connects with S1 mouth, and the other end connects with compressor；5th section, with the cold-producing medium main road being arranged in subcooler be arranged in subcooler with flowing, one end connects with second section, the other end and the 3rd section connection.
Further, above-mentioned multiplex roles controls valve and is made up of the first three-way valve and the second three-way valve, first three-way valve has A3 mouth, B3 mouth and three interfaces of C3 mouth, second three-way valve has A4 mouth, B4 mouth and three interfaces of C4 mouth, cold-producing medium branch road includes: first section, one end connects with cold-producing medium main road, and one end connects with A3 mouth；Second section, one end connects with B3 mouth；3rd section, one end connects with C3 mouth；4th section, one end connects with A4 mouth, and the other end connects with compressor；5th section, with the cold-producing medium main road being arranged in subcooler be arranged in subcooler with flowing, one end connects with second section, the other end and the 3rd section connection；6th section, one end connects with second section or the 5th section, and the other end connects with C4 mouth；7th section, one end connects with the 3rd section or the 5th section, and the other end connects with B4 mouth.
Further, above-mentioned subcooler includes: the first expansion valve, is arranged in the 3rd section；Second expansion valve, is arranged in second section.
Further, above-mentioned compressor is spray enthalpy compressor, and spray enthalpy compressor has refrigerant outlet, refrigerant inlet and increasing enthalpy entrance；Outdoor heat exchanger and refrigerant outlet are by the first spray enthalpy fluid communication, and spray enthalpy fluid communication with refrigerant inlet by second；Indoor heat exchanger sprays enthalpy fluid communication with refrigerant outlet by the 3rd, and with refrigerant inlet by the 4th spray enthalpy fluid communication, enthalpy fluid communication is sprayed with the second spray enthalpy stream and the 4th in the 4th section.
Further, above-mentioned multi-connected machine device also includes system cross valve, system cross valve has D2 mouth, E2 mouth, S2 mouth and four interfaces of C2 mouth, first spray enthalpy stream, the second spray enthalpy stream, the 3rd spray enthalpy stream and the 4th spray enthalpy circuit portion section overlap, wherein, first spray enthalpy stream includes: first-class section, one end connects with refrigerant outlet, and the other end connects with E2 mouth；Second section, one end connects with outdoor heat exchanger, and the other end connects with S2 mouth；Second spray enthalpy stream includes: second section；3rd flowpath segment, one end connects with refrigerant inlet, and the other end connects with C2 mouth, and the 4th section connects with the 3rd flowpath segment；3rd spray enthalpy stream includes: first-class section；4th flowpath segment, one end connects with indoor heat exchanger, and the other end connects with D2 mouth；4th spray enthalpy stream includes the 3rd flowpath segment and the 4th flowpath segment.
Further, above-mentioned multiplex roles controls to be provided with low temperature valve on the 4th section between valve and the 3rd flowpath segment, multi-connected machine device also includes: increase enthalpy loop, one end connects with the 4th section crossed between low temperature valve and multiplex roles control valve, the other end is connected with increasing enthalpy entrance, and is provided with increasing enthalpy valve on increasing enthalpy loop.
Further, above-mentioned multi-connected machine device also includes: gas-liquid separator, is arranged in the 3rd flowpath segment, and the interface of the 4th section and the 3rd flowpath segment is between gas-liquid separator and system cross valve.
According to another aspect of the present utility model, it is provided that a kind of multiple on-line system, including control station and the multi-connected machine device of electrical connection, this multi-connected machine device is above-mentioned multi-connected machine device.
Application the technical solution of the utility model, existing multi-connected machine device adds cold-producing medium branch road and multiplex roles controls valve, and the connected relation controlling each interface of valve by regulating multiplex roles makes cold-producing medium realize adverse current in subcooler, and then no matter achieve be heating operations or process of refrigerastion all can realize bigger mean temperature difference, reach the purpose utilizing same device to improve refrigeration and heating efficiency.
Accompanying drawing explanation
The Figure of description constituting the part of the application is used for providing being further appreciated by of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 illustrates the structural representation of the multi-connected machine device of prior art；
Fig. 2 illustrates the structural representation of the multi-connected machine device according to a kind of preferred embodiment of the present utility model；And
Fig. 3 illustrates the structural representation of the multi-connected machine device according to another kind of preferred embodiment of the present utility model.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, compressor；20, outdoor heat exchanger；21, first-class section；22, second section；23, the 3rd flowpath segment；24, the 4th flowpath segment；30, indoor heat exchanger；40, cold-producing medium main road；50, subcooler；51, the first expansion valve；52, the second expansion valve；61, first section；62, second section；63, the 3rd section；64, the 4th section；65, the 5th section；66, the 6th section；67, the 7th section；68, low temperature valve is crossed；71, cross valve；72, the first three-way valve；73, the second three-way valve；80, system cross valve；90, enthalpy loop is increased；91, enthalpy valve is increased；100, gas-liquid separator.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
nullAs background technology analyzed，The multiple on-line system of prior art can not increase refrigeration and heating efficiency simultaneously，In order to solve this problem，A kind of typical embodiment of the application provides a kind of multi-connected machine device，As depicted in figs. 1 and 2，This multi-connected machine device includes compressor 10，The outdoor heat exchanger 20 connected with compressor 10 and indoor heat exchanger 30，The cold-producing medium main road 40 of communication chamber external heat exchanger 20 and indoor heat exchanger 30，And cold-producing medium main road 40 is arranged through subcooler 50、This multi-connected machine device also includes cold-producing medium branch road and multiplex roles controls valve，This cold-producing medium branch road one end connects with the cold-producing medium main road 40 between subcooler 50 and outdoor heat exchanger 20，The other end connects with compressor 10，Cold-producing medium branch road is arranged through subcooler 50，And pipeline section in subcooler 50 of cold-producing medium branch road and cold-producing medium main road 40 flow setting；Multiplex roles controls valve and is arranged on cold-producing medium branch road, for controlling cold-producing medium cold-producing medium main road 40 in subcooler 50 and cold-producing medium branch road adverse current.
The application adds cold-producing medium branch road on existing multi-connected machine device and multiplex roles controls valve, and the connected relation controlling each interface of valve by regulating multiplex roles makes cold-producing medium realize adverse current in subcooler 50, and then no matter achieve be heating operations or process of refrigerastion all can realize bigger mean temperature difference, reach the purpose utilizing same device to improve refrigeration and heating efficiency.
Above-mentioned cold-producing medium branch road and the cold-producing medium main road 40 set-up mode in subcooler have multiple, as long as the structure of the purpose of cold-producing medium heat exchange between the two can be realized, it is preferable that pipeline section in subcooler 50 of cold-producing medium branch road and cold-producing medium main road 40 also flows setting.
As shown in Figure 2, in the application one preferred embodiment, it is cross valve 71 that above-mentioned multiplex roles controls valve, cross valve 71 has D1 mouth, E1 mouth, S1 mouth and four interfaces of C1 mouth, cold-producing medium branch road includes section 62,61, second, first section, the 3rd section 63, the 4th section 64 and the 5th section 65, one end, first section 61 connects with cold-producing medium main road 40, and one end connects with D1 mouth；One end, second section 62 connects with E1 mouth；One end, 3rd section 63 connects with C1 mouth；One end, 4th section 64 connects with S1 mouth, and the other end connects with compressor 10；5th section 65 and the cold-producing medium main road 40 being arranged in subcooler 50 are also arranged in subcooler 50 with flowing, and one end connects with second section 62, and the other end and the 3rd section 63 connect.
In the application another kind preferred embodiment, as shown in Figure 3, above-mentioned multiplex roles controls valve and is made up of the first three-way valve 72 and the second three-way valve 73, first three-way valve 72 has A3 mouth, B3 mouth and three interfaces of C3 mouth, second three-way valve 73 has A4 mouth, B4 mouth and three interfaces of C4 mouth, cold-producing medium branch road includes section 62,61, second, first section, the 3rd section 63, the 4th section 64, the 5th section 65, the 6th section 66 and the 7th section 67, one end, first section 61 connects with cold-producing medium main road 40, and one end connects with A3 mouth；One end, second section 62 connects with B3 mouth；One end, 3rd section 63 connects with C3 mouth；One end, 4th section 64 connects with A4 mouth, and the other end connects with compressor 10；5th section 65 and the cold-producing medium main road 40 being arranged in subcooler 50 are also arranged in subcooler 50 with flowing, and one end connects with second section 62, and the other end and the 3rd section 63 connect；One end, 6th section 66 connects with second section 62 or the 5th section 65, and the other end connects with C4 mouth；One end, 7th section 67 connects with the 3rd section 63 or the 5th section 65, and the other end connects with B4 mouth.
Preferably as shown in Figures 2 and 3, above-mentioned subcooler 50 processed includes the first expansion valve 51 and the second expansion valve 52, and the first expansion valve 51 is arranged in the 3rd section 63；Second expansion valve 52 is arranged in second section 62, utilizes above-mentioned first expansion valve 51 and the second expansion valve 52 to improve the cold efficiency excessively of subcooler 50.
Stream between the compressor 10 of the application and outdoor heat exchanger 20, compressor 10 and indoor heat exchanger 30 can according to system need carry out individually designed, such as this compressor 10 is spray enthalpy compressor, and this spray enthalpy compressor has refrigerant outlet, refrigerant inlet and increasing enthalpy entrance；This outdoor heat exchanger 20 and refrigerant outlet are by the first spray enthalpy fluid communication, and spray enthalpy fluid communication with refrigerant inlet by second；This indoor heat exchanger 30 and refrigerant inlet are by the 3rd spray enthalpy fluid communication, and spray enthalpy fluid communication with refrigerant inlet by the 4th；4th section 64 and the second spray enthalpy stream and the 4th spray enthalpy fluid communication, to save flow path designs.
In order to simplify structure, the application preferably employs the mode that system cross valve 80 and stream carry out combining, as shown in Figures 2 and 3, namely multi-connected machine device also includes system cross valve 80, this system cross valve 80 has D2 mouth, E2 mouth, S2 mouth and four interfaces of C2 mouth, first spray enthalpy stream, the second spray enthalpy stream, the 3rd spray enthalpy stream and the 4th spray enthalpy circuit portion section overlap, wherein, first spray enthalpy stream includes first-class section 21 and second section 22, the one end in first-class section 21 connects with described refrigerant outlet, and the other end connects with described E2 mouth；The one end in second section 22 connects with described outdoor heat exchanger 20, and the other end connects with described S2 mouth；Second spray enthalpy stream includes above-mentioned second section 22 and the 3rd flowpath segment 23, and one end of the 3rd flowpath segment 23 connects with described refrigerant inlet, and the other end connects with described C2 mouth, and the 4th section 64 connects with the 3rd flowpath segment 23；3rd spray enthalpy stream includes above-mentioned first-class section 21 and the 4th flowpath segment 24, and one end of the 4th flowpath segment 24 connects with indoor heat exchanger 30, and the other end connects with D2 mouth；4th spray enthalpy stream includes the 3rd above-mentioned flowpath segment 23 and the 4th above-mentioned flowpath segment 24.Above-mentioned first spray enthalpy stream and the second spray enthalpy stream overlap in second section 22, second spray enthalpy stream and the 4th spray enthalpy stream overlap in the 3rd flowpath segment 23, first spray enthalpy stream and the 3rd spray enthalpy stream overlap in first-class section 21, and it is attached with system cross valve 80 in the manner described above, it is achieved that utilize less valve and pipeline to realize the technique effect of identical function.
Preferably as shown in Figures 2 and 3, above-mentioned multiplex roles controls to be provided with low temperature valve 68 on the 4th section 64 between valve and the 3rd flowpath segment 23, multi-connected machine device also includes increasing enthalpy loop 90, this one end, increasing enthalpy loop 90 connects with the 4th section 64 crossed between low temperature valve 68 and multiplex roles control valve, the other end is connected with increasing enthalpy entrance, and is provided with increasing enthalpy valve 91 on increasing enthalpy loop 90.
In order to improve the compression efficiency of compressor, preferably as shown in Figures 2 and 3, above-mentioned multi-connected machine device also includes gas-liquid separator 100, is arranged in the 3rd flowpath segment 23, and the interface of the 4th section 64 and the 3rd flowpath segment 23 is between gas-liquid separator 100 and indoor heat exchanger 30.Utilize gas-liquid separator 100 to be separated with gaseous refrigerant by liquid refrigerant, and gaseous refrigerant is separated, it is provided that be compressed to compressor 10.
In the another kind of typical embodiment of the application, it is provided that a kind of multiple on-line system, including control station and the multi-connected machine device of electrical connection, this multi-connected machine device is the multi-connected machine device of any of the above-described embodiment.Control station is utilized to simplify the mode of operation of multiple on-line system；And owing to having the multi-connected machine device of the application, therefore heating of this system is all improved with refrigerating efficiency.
In order to be more fully understood that the application, in another typical embodiment of the application, providing and a kind of utilize above-mentioned multiple on-line system to carry out the method freezed and heat, the method controls valve makes cold-producing medium cold-producing medium main road 40 in subcooler 50 and cold-producing medium branch road adverse current by controlling multiplex roles.
When multiplex roles control valve is cross valve 71, as in figure 2 it is shown, this cross valve 71 has D1 mouth, E1 mouth, S1 mouth and four interfaces of C1 mouth, when freezing, the D1 mouth of cross valve 71 connects with E1 mouth, and S1 mouth connects with C1 mouth；When heating, the D1 mouth of cross valve 71 connects with C1 mouth, and E1 mouth connects with S1 mouth.
When Interface Controller valve is made up of the first three-way valve 72 and the second three-way valve 73, as shown in Figure 3, first three-way valve 72 has A3 mouth, B3 mouth and three interfaces of C3 mouth, second three-way valve 73 has A4 mouth, B4 mouth and three interfaces of C4 mouth, when freezing, the A3 mouth of the first three-way valve 72 connects with B3 mouth, and the C4 mouth of the second three-way valve 73 connects with A4 mouth；When heating, the A3 mouth of the first three-way valve 72 connects with C3 mouth, and the B4 mouth of the second three-way valve 73 connects with A4 mouth.
In addition, in another typical embodiment of the application, providing the control method of a kind of above-mentioned multiple on-line system, this control method utilizes control station to control multiplex roles to control the switch cold-producing medium main road 40 that makes cold-producing medium in subcooler 50 and the cold-producing medium branch road adverse current of valve.
In order to be more fully understood that structure and the cooling and warming principle of the application, below with reference to accompanying drawing, structure, cooling and warming process and control method are illustrated.
When multiplex roles control valve is cross valve 71, structure shown in Fig. 2 is utilized to freeze, control station is utilized to make system cross valve 80 and cross valve 71 be in off-position, the D1 mouth making cross valve 71 connects with E1 mouth, S1 mouth connects with C3 mouth, the S2 mouth of system cross valve 80 connects with E2 mouth, and D2 mouth connects with C4 mouth；Open the low temperature valve 68 excessively of multi-connected machine device, closedown increases enthalpy valve the 91, first expansion valve 51 and is opened into maximum rating simultaneously, the frequency of spray enthalpy compressor start 60s and spray enthalpy compressor is more than after 40Hz, and the degree of supercooling that the second expansion valve 52 sets according to described control station is adjusted.Wherein, the Controlling principle of degree of supercooling is: according to the factor such as ambient temperature, delivery temperature, it is judged that different target degree of supercooling numerical value, detects temperature and desired value gap by the temperature-sensitive bag of system, controls the aperture of the second expansion valve 52 with this.Under above-mentioned pattern, cold-producing medium by spray the refrigerant outlet of enthalpy compressor along first-class section 21, the E2 mouth of system cross valve 80 and S2 mouth, second section 22 inlet chamber external heat exchanger 20, then flowed out tailing edge cold-producing medium main road 40 by outdoor heat exchanger 20 and flow.Before entering subcooler 50, cold-producing medium is divided into two-way, one tunnel enters after subcooler 50 heat exchanger 30 in inlet chamber through cold-producing medium main road 40, then returns to spray enthalpy compressor through the 4th flowpath segment 24, the D2 mouth of system cross valve 80 and C2 mouth, the 3rd flowpath segment 23, gas-liquid separator 100.Another road cold-producing medium flows successively through first section 61, D1 mouth, E1 mouth, second section 62, second expansion valve 52, 5th section 65, first expansion valve 51, 3rd section 63, C1 mouth, S1 mouth and the 4th section 64, enter the 3rd flowpath segment 23 after crossing low temperature valve 68 to converge with the cold-producing medium flow through by main road, it is then passed through gaseous refrigerant after gas-liquid separator 100 separates and is entered spray enthalpy compressor by refrigerant inlet, liquid refrigerant stays the bottom of gas-liquid separator 100, the refrigerant flow direction in the 5th section 65 being wherein arranged in subcooler 50 is contrary with the refrigerant flow direction in cold-producing medium main road 40, the farthest heat of cold-producing medium in absorbance cold-producing medium main road 40, and then achieve the maximum temperature difference of process of refrigerastion.
Utilizing structure as shown in Figure 2 to heat, utilize control station to make described spray enthalpy compressor start, the commutation of described system cross valve 80 makes the D2 mouth of system cross valve 80 connect with E2 mouth, and S2 mouth connects with C2 mouth；Be then turned on low temperature valve 68, closedown increases enthalpy valve 91, cross valve 71 powers on, second expansion valve 52 is opened into maximum rating, and the initial opening that the first expansion valve 51 sets according to control station is adjusted, now, the D1 mouth of cross valve 71 connects with C1 mouth, and E1 mouth connects with S1 mouth；When subcooler 50 air inlet and give vent to anger difference more than design temperature and maintain the frequency of 60s and spray enthalpy compressor more than 40Hz after, closed low temperature valve 68, and opened and increase enthalpy valve 91, the second expansion valve 52 is adjusted according to the subcooler 50 gas side degree of superheat.Wherein, the above-mentioned gas side degree of superheat=subcooler gas goes out temperature-gas and enters temperature, and purpose, for controlling under heating mode, regulates the aperture of the second expansion valve 52.Under above-mentioned pattern, cold-producing medium is by spraying after the refrigerant outlet of enthalpy compressor enters indoor heat exchanger 30 along first-class section 21, the E2 mouth of system cross valve 80 and D2 mouth, then flowed out tailing edge cold-producing medium main road 40 by indoor heat exchanger 30 to flow, and enter subcooler 50 and set up degree of supercooling, then flowed out by subcooler 50 and be divided into two-way, one tunnel through cold-producing medium main road 40 inlet chamber external heat exchanger 20, then enters spray enthalpy compressor through second section 22, the S2 mouth of system cross valve 80 and C4 mouth, the 3rd flowpath segment 23, gas-liquid separator 100 through refrigerant inlet.After another road cold-producing medium is flowed out by subcooler 50, flow successively through first section 61, D1 mouth, C1 mouth, 3rd section 63, first expansion valve 51, 5th section 65, second expansion valve 52, second section 62, E1 mouth, S1 mouth and the 4th section 64, increase enthalpy loop 90, by increasing enthalpy entrance entrance spray enthalpy compressor after increasing enthalpy valve 91, the refrigerant flow direction in the 5th section 65 being wherein arranged in subcooler 50 is contrary with the refrigerant flow direction in cold-producing medium main road 40, the farthest heat of cold-producing medium in absorbance cold-producing medium main road 40, and then achieve the maximum temperature difference of heating operations.
Utilizing said system to heat and turn refrigeration mode, the second expansion valve 52 is opened into maximum rating, closes the first expansion valve 51, opens low temperature valve 68, closes and increases enthalpy valve 91, and system cross valve 80 commutates, and the frequency of spray enthalpy compressor, to 40Hz, closes cross valve 71.Utilizing aforesaid operations is to form pressure reduction, it is ensured that cross valve 71 can normal commutation.
When multiplex roles control valve is made up of the first three-way valve 72 and the second three-way valve 73, the system shown in Fig. 3 is utilized to freeze, utilize that control station makes system cross valve 80 and the first three-way valve 72 be in off-position, the second three-way valve 73 is in power-up state, the A3 mouth making the first three-way valve 72 connects with B3 mouth, the C4 mouth of the second three-way valve 73 connects with A4 mouth, the S2 mouth of system cross valve 80 connects with E2 mouth, and D2 mouth connects with C2 mouth；Open the low temperature valve 68 excessively of multi-connected machine device, closedown increases enthalpy valve the 91, first expansion valve 51 and is opened into maximum rating simultaneously, the frequency of spray enthalpy compressor start 60s and described spray enthalpy compressor is more than after 40Hz, and the degree of supercooling that the second expansion valve 52 sets according to control station is adjusted.Wherein, degree of supercooling Controlling principle is: according to the factor such as ambient temperature, delivery temperature, it is judged that different target degree of supercooling numerical value, detects temperature and desired value gap by the temperature-sensitive bag of system, controls the aperture of the second expansion valve 52 with this.Under above-mentioned pattern, cold-producing medium by spray the refrigerant outlet of enthalpy compressor along first-class section 21, the E2 mouth of system cross valve 80 and S2 mouth, second section 22 inlet chamber external heat exchanger 20, then flowed out tailing edge cold-producing medium main road 40 by outdoor heat exchanger 20 and flow.Before entering subcooler 50, cold-producing medium is divided into two-way, one tunnel enters after subcooler 50 heat exchanger 30 in inlet chamber through cold-producing medium main road 40, then returns to spray enthalpy compressor through the 4th flowpath segment 24, the D2 mouth of system cross valve 80 and C2 mouth, the 3rd flowpath segment 23, gas-liquid separator 100.Another road cold-producing medium flows successively through first section 61, A3 mouth, B3 mouth, second section 62, second expansion valve 52, 5th section 65, 7th section 67, B4 mouth, A4 mouth and the 4th section 64, enter the 3rd flowpath segment 23 after crossing low temperature valve 68 to converge with the cold-producing medium flow through by main road, it is then passed through liquid refrigerant after gas-liquid separator 100 separates and is entered compressor by refrigerant inlet, the refrigerant flow direction in the 5th section 65 being wherein arranged in subcooler 50 is contrary with the refrigerant flow direction in cold-producing medium main road 40, the farthest heat of cold-producing medium in absorbance cold-producing medium main road 40, and then achieve the maximum temperature difference of process of refrigerastion.
When utilizing structure as shown in Figure 3 to heat, control station is utilized to make described spray enthalpy compressor start, first three-way valve 72 is in power-up state, the second three-way valve 73 is in off-position, makes the A3 mouth of the first three-way valve 72 connect with C3 mouth, and the B4 mouth of the second three-way valve 73 connects with A4 mouth；It is then shut off low temperature valve 68, opens increasing enthalpy valve 91, second expansion valve 52 is opened into maximum rating, system cross valve 80 commutation after and spray enthalpy compressor frequency to 40Hz, the D2 mouth making system cross valve 80 connects with E2 mouth, S2 mouth connects with C2 mouth, and the first expansion valve 51 is adjusted according to the subcooler 50 gas side degree of superheat.Wherein, the gas side degree of superheat=subcooler gas goes out temperature-gas and enters temperature, and purpose is control under heating mode, the aperture of the second expansion valve 52.Under above-mentioned pattern, cold-producing medium is by spraying after the refrigerant outlet of enthalpy compressor enters indoor heat exchanger 30 along first-class section 21, the E2 mouth of system cross valve 80 and D2 mouth, then flowed out tailing edge cold-producing medium main road 40 by indoor heat exchanger 30 to flow, and enter subcooler 50 and set up degree of supercooling, then flowed out by subcooler 50 and be divided into two-way, one tunnel through cold-producing medium main road 40 inlet chamber external heat exchanger 20, then enters spray enthalpy compressor through second section 22, the S2 mouth of system cross valve 80 and C4 mouth, the 3rd flowpath segment 23, gas-liquid separator 100 through refrigerant inlet.After another road cold-producing medium is flowed out by subcooler 50, flow successively through first section 61, A3 mouth, C3 mouth, the 3rd section the 63, first expansion valve 51, the 5th section 65, the 6th section 66, C4 mouth, A4 mouth and the 4th section 64, increase enthalpy loop 90, increase enthalpy valve 91 after enter compressor by increasing enthalpy entrance, the refrigerant flow direction in the 5th section 65 being wherein arranged in subcooler 50 is contrary with the refrigerant flow direction in cold-producing medium main road 40, the farthest heat of cold-producing medium in absorbance cold-producing medium main road 40, and then achieve the maximum temperature difference of heating operations.
As can be seen from the above description, this utility model the above embodiments achieve following technique effect:
Multi-connected machine device adds cold-producing medium branch road and multiplex roles controls valve, and the connected relation controlling each interface of valve by regulating multiplex roles makes cold-producing medium realize adverse current in subcooler, and then no matter achieve be heating operations or process of refrigerastion all can realize bigger mean temperature difference, reach the purpose utilizing same device to improve refrigeration and heating efficiency.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (10)
1. a multi-connected machine device, including compressor (10), the outdoor heat exchanger (20) connected with described compressor (10) and indoor heat exchanger (30), connect the cold-producing medium main road (40) of described outdoor heat exchanger (20) and described indoor heat exchanger (30), and described cold-producing medium main road (40) is arranged through subcooler (50), it is characterized in that, described multi-connected machine device also includes:
Cold-producing medium branch road, described cold-producing medium main road (40) between one end with described subcooler (50) and described outdoor heat exchanger (20) connects, the other end connects with described compressor (10), and described cold-producing medium branch road is arranged through described subcooler (50)；And
Multiplex roles controls valve, is arranged on described cold-producing medium branch road, is used for controlling the described cold-producing medium described cold-producing medium main road (40) in described subcooler (50) and described cold-producing medium branch road adverse current.
2. multi-connected machine device according to claim 1, it is characterised in that pipeline section in described subcooler (50) of described cold-producing medium branch road and described cold-producing medium main road (40) also flows setting.
3. multi-connected machine device according to claim 1, it is characterised in that it is cross valve (71) that described multiplex roles controls valve, and described cross valve (71) has D1 mouth, E1 mouth, S1 mouth and four interfaces of C1 mouth, and described cold-producing medium branch road includes:
First section (61), one end connects with described cold-producing medium main road (40), and the other end connects with described D1 mouth；
Second section (62), one end connects with described E1 mouth；
3rd section (63), one end connects with described C1 mouth；
4th section (64), one end connects with described S1 mouth, and the other end connects with described compressor (10)；
5th section (65), with the cold-producing medium main road (40) being arranged in described subcooler (50) be arranged in described subcooler (50) with flowing, one end connects with described second section (62), and the other end connects with described 3rd section (63).
4. multi-connected machine device according to claim 1, it is characterized in that, described multiplex roles controls valve and is made up of the first three-way valve (72) and the second three-way valve (73), described first three-way valve (72) has A3 mouth, B3 mouth and three interfaces of C3 mouth, described second three-way valve (73) has A4 mouth, B4 mouth and three interfaces of C4 mouth, and described cold-producing medium branch road includes:
First section (61), one end connects with described cold-producing medium main road (40), and one end connects with described A3 mouth；
Second section (62), one end connects with described B3 mouth；
3rd section (63), one end connects with described C3 mouth；
4th section (64), one end connects with described A4 mouth, and the other end connects with described compressor (10)；
5th section (65), with the cold-producing medium main road (40) being arranged in described subcooler (50) be arranged in described subcooler (50) with flowing, one end connects with described second section (62), and the other end connects with described 3rd section (63)；
6th section (66), one end connects with described second section (62) or the 5th section (65), and the other end connects with described C4 mouth；
7th section (67), one end connects with described 3rd section (63) or described 5th section (65), and the other end connects with described B4 mouth.
5. the multi-connected machine device according to claim 3 or 4, it is characterised in that described subcooler (50) including:
First expansion valve (51), is arranged in described 3rd section (63)；
Second expansion valve (52), is arranged in described second section (62).
6. the multi-connected machine device according to claim 3 or 4, it is characterised in that described compressor (10) is spray enthalpy compressor, and described spray enthalpy compressor has refrigerant outlet, refrigerant inlet and increasing enthalpy entrance；Described outdoor heat exchanger (20) and described refrigerant outlet are by the first spray enthalpy fluid communication, and spray enthalpy fluid communication with described refrigerant inlet by second；Described indoor heat exchanger (30) and described refrigerant outlet are by the 3rd spray enthalpy fluid communication, and with described refrigerant inlet by the 4th spray enthalpy fluid communication, described 4th section (64) and described second spray enthalpy stream and described 4th spray enthalpy fluid communication.
7. multi-connected machine device according to claim 6, it is characterized in that, described multi-connected machine device also includes system cross valve (80), described system cross valve (80) has D2 mouth, E2 mouth, S2 mouth and four interfaces of C2 mouth, described first spray enthalpy stream, described second spray enthalpy stream, described 3rd spray enthalpy stream and described 4th spray enthalpy circuit portion section overlap, wherein
Described first spray enthalpy stream includes:
First-class section (21), one end connects with described refrigerant outlet, and the other end connects with described E2 mouth；
Second section (22), one end connects with described outdoor heat exchanger (20), and the other end connects with described S2 mouth；
Described second spray enthalpy stream includes:
Described second section (22)；
3rd flowpath segment (23), one end connects with described refrigerant inlet, and the other end connects with described C2 mouth, and described 4th section (64) connects with described 3rd flowpath segment (23)；
Described 3rd spray enthalpy stream includes:
Described first-class section (21)；
4th flowpath segment (24), one end connects with described indoor heat exchanger (30), and the other end connects with described D2 mouth；
Described 4th spray enthalpy stream includes described 3rd flowpath segment (23) and described 4th flowpath segment (24).
8. multi-connected machine device according to claim 7, it is characterized in that, described multiplex roles controls to be provided with low temperature valve (68) on the 4th section (64) between valve and described 3rd flowpath segment (23), and described multi-connected machine device also includes:
Increase enthalpy loop (90), one end connects with described the 4th section (64) crossed between low temperature valve (68) and described multiplex roles control valve, the other end is connected with described increasing enthalpy entrance, and is provided with increasing enthalpy valve (91) on described increasing enthalpy loop (90).
9. multi-connected machine device according to claim 8, it is characterised in that described multi-connected machine device also includes:
Gas-liquid separator (100), being arranged in described 3rd flowpath segment (23), the interface of described 4th section (64) and described 3rd flowpath segment (23) is positioned between described gas-liquid separator (100) and described system cross valve (80).
10. a multiple on-line system, including control station and the multi-connected machine device of electrical connection, it is characterised in that described multi-connected machine device is the multi-connected machine device according to any one of claim 1 to 9.
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|---|---|---|---|
| CN201620157287.3U CN205403232U (en) | 2016-02-29 | 2016-02-29 | Multi-split device and system |
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| CN201620157287.3U CN205403232U (en) | 2016-02-29 | 2016-02-29 | Multi-split device and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716311A (en) * | 2016-02-29 | 2016-06-29 | 珠海格力电器股份有限公司 | Multi-split device and system, refrigerating and heating method and control method of system |
| CN109282545A (en) * | 2018-09-12 | 2019-01-29 | 宁波市海智普智能科技有限公司 | The Gas-supplying enthalpy-increasing control method of low form direct-current frequency conversion heat pump system |
| WO2021077915A1 (en) * | 2019-10-23 | 2021-04-29 | 珠海格力电器股份有限公司 | Continuous heating control system and method, and air-conditioning device |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105716311A (en) * | 2016-02-29 | 2016-06-29 | 珠海格力电器股份有限公司 | Multi-split device and system, refrigerating and heating method and control method of system |
| WO2017148225A1 (en) * | 2016-02-29 | 2017-09-08 | 珠海格力电器股份有限公司 | Multi-split air conditioning device and system, cooling and heating method, and method for controlling multi-split air conditioning system |
| CN109282545A (en) * | 2018-09-12 | 2019-01-29 | 宁波市海智普智能科技有限公司 | The Gas-supplying enthalpy-increasing control method of low form direct-current frequency conversion heat pump system |
| WO2021077915A1 (en) * | 2019-10-23 | 2021-04-29 | 珠海格力电器股份有限公司 | Continuous heating control system and method, and air-conditioning device |
| US20220412621A1 (en) * | 2019-10-23 | 2022-12-29 | Gree Electric Appliances, Inc. Of Zhuhai | Continuous Heating Control System and Method, and Air-Conditioning Device |
| US12038211B2 (en) * | 2019-10-23 | 2024-07-16 | Gree Electric Appliances, Inc. Of Zhuhai | Continuous heating control system and method, and air-conditioning device |
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