CN202835678U - Multi-connecting type air conditioning system - Google Patents
Multi-connecting type air conditioning system Download PDFInfo
- Publication number
- CN202835678U CN202835678U CN 201220494564 CN201220494564U CN202835678U CN 202835678 U CN202835678 U CN 202835678U CN 201220494564 CN201220494564 CN 201220494564 CN 201220494564 U CN201220494564 U CN 201220494564U CN 202835678 U CN202835678 U CN 202835678U
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- heat exchanger
- tube connector
- conditioning system
- air conditioning
- premises station
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Abstract
The utility model is applied to the field of refrigeration equipment, and provides a multi-connecting type air conditioning system which comprises an outdoor unit, an indoor unit and an electronic control component. The outdoor unit and the indoor unit form a refrigerant circulation loop through connection of a first connecting pipe and a second connecting pipe. The indoor unit comprises a plurality of indoor heat exchange pipes and branching pipes. The electronic control component comprises an outdoor unit electronic control board and an indoor unit electronic control board. The outdoor unit electronic control board is provided with a first dial coded disc capable of feedback of length information of the second connecting pipe, the indoor unit electronic control board is provided with a second dial coded disc capable of feedback of length information of the branching pipes, and the outdoor unit electronic control board is electrically connected with the indoor unit electronic control board. A pressure sensor is arranged between connecting pipelines of an input port of a compressor and an outlet of a gas-liquid separator. A temperature sensor is arranged at one end where the branching pipes are connected with the indoor heat exchange pipes. When refrigeration of the system is carried out, evaporating pressure of the indoor unit can be relatively accurately calculated, important parameters are provided for controlling of the degree of superheat of the indoor unit scientifically, and reliability and comfort of the air conditioning system are effectively improved.
Description
Technical field
The utility model belongs to art of refrigeration units, relates in particular to a kind of multi-connected air conditioning system.
Background technology
The degree of superheat refers to the poor of the overtemperature of cold-producing medium under the identical evaporating pressure and saturation temperature in the kind of refrigeration cycle, and it is a technical parameter commonly used in the refrigeration system.The degree of superheat too conference causes the indoor set poor refrigerating efficiency and makes the compressor return air temperature high, the too little meeting of the degree of superheat causes the indoor-unit cooling-medium evaporation compressor liquid hit phenomenon not exclusively and easily to occur, so whether the control of the degree of superheat rationally directly has influence on air-conditioning system reliability of operation and comfortableness.
At present, during the multi-connected air conditioning system running refrigerating, the obtain manner of the indoor heat exchanger degree of superheat probably has two kinds: the one, in the somewhere, middle part of indoor heat exchanger and the tracheae exit of indoor heat exchanger a temperature sensor is set respectively, the measured temperature in somewhere, middle part of acquiescence heat exchanger is evaporating temperature, with the tracheae exit temperature of the evaporimeter that records and the degree of superheat that this evaporating temperature relatively obtains indoor set, then carry out the aperture of organic electronic expansion valve in the conditioning chamber according to this degree of superheat; The 2nd, at the muffler place of air-conditioning system a pressure sensor is set, in the tracheae exit of indoor heat exchanger a temperature sensor is set, the measured back pressure of acquiescence pressure sensor is evaporating pressure, obtain an evaporating temperature according to this evaporating pressure, with the degree of superheat that temperature and the evaporating temperature in indoor heat exchanger tracheae exit relatively obtains indoor set, then carry out the aperture of organic electronic expansion valve in the conditioning chamber according to this degree of superheat.But the evaporating temperature that is obtained by this dual mode is inadequate science all: for mode one, if when indoor machine evaporation middle part refrigerant has been superheat state, the degree of superheat of the indoor set of its gained is just incorrect so; For mode two, in long pipe arrangement air-conditioning system, because the pressure loss that the pipe arrangement of growing can cause indoor heat exchanger to be exported between the off-premises station pressure sensor place is larger, therefore the actual pressure in indoor machine evaporation exit will be higher than the force value that off-premises station pressure pressure sensor place records, actual indoor set evaporating temperature will be higher than the saturation temperature that goes out by the measured conversion pressure of pressure sensor, so the degree of superheat of the indoor set that this mode obtains is incorrect too.
Because the computational methods of the degree of superheat are inaccurate, caused the unreasonable of indoor set degree of superheat control, thereby affected reliability and the comfortableness of whole multi-connected air conditioning system.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and multi-connected air conditioning system is provided, and its indoor set degree of superheat accuracy in computation is high, reliability and the comfortableness of air-conditioning system are good.
The utility model is achieved in that multi-connected air conditioning system, comprise off-premises station, indoor set and electrically-controlled component, be connected to form refrigerant circulation circuit by the first tube connector and the second tube connector between described off-premises station and the described indoor set, described off-premises station comprises compressor, outdoor heat exchanger, gas-liquid separator and the second stop valve, the import of described gas-liquid separator connects described the second tube connector by described the second stop valve, the outlet of described gas-liquid separator connects the input port of described compressor, and the delivery outlet of described compressor connects described the first tube connector by described outdoor heat exchanger; Described indoor set comprises a plurality of indoor heat exchangers and the branched pipe that is connected described indoor heat exchanger and described the second tube connector, described the second tube connector one end connects described branched pipe, the other end connects described the second stop valve, described electrically-controlled component comprises off-premises station electric-controlled plate and indoor set electric-controlled plate, described off-premises station electric-controlled plate is provided with the first dial-up dish that can feed back described the second tube connector length information, described indoor set electric-controlled plate is provided with the second dial-up dish that can feed back described branched pipe length information, described off-premises station electric-controlled plate is electrically connected described indoor set electric-controlled plate, but be provided with the pressure sensor of a signal piping pressure between the connecting line of the input port of described compressor and the outlet of described gas-liquid separator, but the end that described branched pipe is connected with described indoor heat exchanger is provided with the temperature sensor of a signal piping temperature.
Further, described off-premises station also comprises oil eliminator and electric expansion valve, described compressor delivery outlet connects described oil eliminator entrance, and described oil eliminator outlet connects the described outdoor heat exchanger of described outdoor heat exchanger and connects described the first tube connector by described electric expansion valve.
Further, described off-premises station also comprises the reversal valve that a changeable refrigerant flows to, and described oil eliminator connects described outdoor heat exchanger by described reversal valve commutation, and described the second stop valve connects described gas-liquid separator by described reversal valve commutation.
Particularly, described reversal valve is cross valve, and each interface connects respectively described oil eliminator, described gas-liquid separator, described the second tube connector and described outdoor heat exchanger.
Further, described the first tube connector is provided with the first stop valve that can control described electric expansion valve.
Preferably, described the first stop valve and described the second stop valve are magnetic valve.
Particularly, each described indoor heat exchanger is connected between described the first tube connector and the second tube connector, and described the second dial-up dish, described branched pipe, described temperature sensor are identical with the quantity of described indoor heat exchanger.
The multi-connected air conditioning system that the utility model provides, it is when cooling system, outdoor heat exchanger uses as condenser, indoor heat exchanger uses as evaporimeter, by the first dial-up dish, the second dial-up dish is respectively with the length information of the second tube connector, the length information of branched pipe feeds back on the off-premises station electric-controlled plate, and further feed back on the off-premises station electric-controlled plate by the back pressure of pressure sensor with compressor, off-premises station is according to the length of the second tube connector, the length of branched pipe and back pressure can calculate indoor heat exchanger to the pressure loss of the second stop valve, then be connected the true evaporating pressure in the indoor heat exchanger exit that is connected with branched pipe by this pressure loss with back pressure, can draw evaporating temperature according to this true evaporating pressure; Temperature by temperature sensor detection branches pipe and indoor heat exchanger exit, this temperature and described evaporating temperature are relatively obtained the degree of superheat in this indoor heat exchanger exit, it calculates the indoor set evaporating pressure more accurately, the degree of superheat that obtains like this is more accurate, so that the control of indoor set degree of superheat science has more improved system's reliability of operation and comfortableness.
Description of drawings
Fig. 1 is the refrigerant circulation circuit schematic diagram of the multi-connected air conditioning system that provides of the utility model embodiment;
Fig. 2 is the electrically-controlled component schematic diagram of the multi-connected air conditioning system that provides of the utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, a kind of multi-connected air conditioning system that the utility model embodiment provides, comprise off-premises station 12, indoor set 11 and electrically-controlled component 2, be connected to form refrigerant circulation circuit 1 by the first tube connector 101 and the second tube connector 102 between described off-premises station 12 and the described indoor set 11, described off-premises station 12 comprises compressor 121, outdoor heat exchanger 125, gas-liquid separator 122 and the second stop valve 128, the import n of described gas-liquid separator 122 connects described the second tube connector 102 by described the second stop valve 128, the outlet p of described gas-liquid separator 122 connects the input port f of described compressor 121, the delivery outlet e of described compressor 121 connects described the first tube connector 101 by described outdoor heat exchanger 125, described indoor set 11 comprises a plurality of indoor heat exchangers 111 and is connected the branched pipe 113 of described indoor heat exchanger 111 with described the second tube connector 102, described the second tube connector 102 1 ends are connected to described branched pipe 113, and the other end is connected to described the second stop valve 128.Described electrically-controlled component 2 comprises off-premises station electric-controlled plate 21 and indoor set electric-controlled plate 22, described off-premises station electric-controlled plate 21 is provided with the first dial-up dish 211 that can feed back described the second tube connector 102 length informations, described indoor set electric-controlled plate 22 is provided with the second dial-up dish 221 that can feed back described branched pipe 113 length informations, described off-premises station electric-controlled plate is electrically connected described indoor set electric-controlled plate, such dial-up on the first dial-up dish 211 and the second dial-up dish 221, its information can feed back on the master chip of outdoor electric-controlled plate 21 for outdoor electric-control system computing.But be provided with the pressure sensor 129 of a signal piping pressure between the connecting line of the input port f of described compressor 121 and described gas-liquid separator 122 outlet p, but the end that described branched pipe 113 is connected with described indoor heat exchanger 111 is provided with the temperature sensor 112 of a signal piping temperature.Particularly, after the multi-connected air conditioning system project installation is finished, by measuring the physical length of the second tube connector 102 and each branched pipe 113, and respectively the first dial-up dish 211 dial the second tube connector 102 length, dial the length of branched pipes 113 at the second dial-up dish 221, the first dial-up dish 211 and the second dial-up dish 221 feed back to its length information respectively the master chip of off-premises station electric-controlled plate 21.When multi-gang air conditioner freezes, outdoor heat exchanger 125 uses as condenser, indoor heat exchanger 111 uses as evaporimeter, pressure sensor 129 feeds back to its back pressure that records the master chip of off-premises station electric-controlled plate 21, the off-premises station electric-control system is according to back pressure, the second tube connector 102 length, branched pipe 113 length and relevant system parameters can calculate the pressure loss at indoor heat exchanger 11 to second stop valves 128 places, then can calculate the true evaporating pressure in indoor heat exchanger 111 exits according to this pressure loss and back pressure, can obtain evaporating temperature according to this evaporating pressure, be appreciated that ground, the just corresponding saturation temperature of each pressure, the saturation temperature that evaporating pressure is corresponding is called evaporating temperature usually.Then the temperature in indoor heat exchanger 111 exits by temperature sensor 112 actual measurements is compared with the aforementioned evaporating temperature that calculates and just can obtain the degree of superheat in indoor heat exchanger 111 exits.Because evaporating pressure obtains by back pressure and Calculation of pressure loss, its degree of accuracy is more increased, also can be more accurate by its degree of superheat that obtains, and the control of indoor set 11 degrees of superheat science has more improved system's reliability of operation and comfortableness like this.
Further, as shown in Figure 1, described off-premises station 12 also comprises oil eliminator 123 and electric expansion valve 127, described compressor 121 delivery outlet e connect described oil eliminator 123 entrances, described oil eliminator 123 outlets connect described outdoor heat exchanger 125, and described outdoor heat exchanger connects described the first tube connector by described electric expansion valve.Oil eliminator 123 is used for separating the lubricating oil of the refrigerant that flows out after compressed machine 121 compressions, has improved the refrigerant quality that enters outdoor heat exchanger 125, has improved heat transfer effect.Electric expansion valve 127 is mainly used in effectively controlling the flow of refrigerant, and control enters the cold medium flux of indoor set 11 according to real needs.
Further, as shown in Figure 1, described off-premises station 12 also comprises the reversal valve 124 that a changeable refrigerant flows to, described oil eliminator 123 connects described outdoor heat exchanger 125 by described reversal valve 124 commutations, and described the second stop valve 128 connects described gas-liquid separator 122 by described reversal valve 124 commutations.Reversal valve 124 the flow direction that can effectively switch refrigerant is set, thereby can make multi-gang air conditioner easily at the refrigeration work state with heat duty and switch, it is simple in structure, and is practical.
Particularly, as shown in Figure 1, described reversal valve 124 is cross valve 124, and its four interfaces connect respectively described oil eliminator 123, described gas-liquid separator 122, described the second tube connector 102 and described outdoor heat exchanger 125.Cross valve 124 is standard component, the commutation simple and flexible, and can conveniently apply to needs in the connecting line of multidirectional commutation.Particularly, the import n conducting, oil eliminator 123 that switches to the second tube connector 102 and gas-liquid separator 122 when cross valve 124 is during with the state of outdoor heat exchanger 125 conductings, and air-conditioning system is in the refrigeration work state; When cross valve 124 switched to the state of the import n of the second tube connector 102 and oil eliminator 123 conductings, gas-liquid separator 122 and outdoor heat exchanger 125 conductings, air-conditioning system was in and heats duty.
Further, as shown in Figure 1, between described the first tube connector 101 and the described outdoor heat exchanger 125, but logical the first stop valve 127 that closes of a control piper is set, can conveniently controls like this flowing of refrigerant, practical.
Preferably, described the first stop valve 127 and described the second stop valve 128 adopt magnetic valve, and magnetic valve can cooperate circuit to realize the control of expecting according to real needs, and its control is convenient and control accuracy is high, flexibility is strong.
Particularly, as shown in Figure 1, described indoor heat exchanger 111 is provided with many, and many described indoor heat exchangers 111 are connected between described the first tube connector 101 and the second tube connector 102, and described the second dial-up dish 221, described branched pipe 113, described temperature sensor 112 are identical with the quantity of described indoor heat exchanger 111.The quantity of indoor heat exchanger 111 designs according to real needs, and being connected in parallel of indoor heat exchanger 111 can effectively prevent the phase mutual interference between the indoor heat exchanger 111, improved each indoor heat exchanger 111 reliability of operation.For every indoor heat exchanger arranges independent the second dial-up dish 221, branched pipe 113 and temperature sensor 112, can accurately control according to the concrete condition of every indoor heat exchanger 111 like this degree of superheat of every indoor heat exchanger 111, improve reliability and the comfortableness of each indoor heat exchanger 111.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace or improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. multi-connected air conditioning system, comprise off-premises station, indoor set and electrically-controlled component, be connected to form refrigerant circulation circuit by the first tube connector and the second tube connector between described off-premises station and the described indoor set, described off-premises station comprises compressor, outdoor heat exchanger, gas-liquid separator and the second stop valve, the import of described gas-liquid separator connects described the second tube connector by described the second stop valve, the outlet of described gas-liquid separator connects the input port of described compressor, and the delivery outlet of described compressor connects described the first tube connector by described outdoor heat exchanger; Described indoor set comprises a plurality of indoor heat exchangers and the branched pipe that is connected described indoor heat exchanger and described the second tube connector, described the second tube connector one end connects described branched pipe, the other end connects described the second stop valve, described electrically-controlled component comprises off-premises station electric-controlled plate and indoor set electric-controlled plate, it is characterized in that: described off-premises station electric-controlled plate is provided with the first dial-up dish that can feed back described the second tube connector length information, described indoor set electric-controlled plate is provided with the second dial-up dish that can feed back described branched pipe length information, described off-premises station electric-controlled plate is electrically connected described indoor set electric-controlled plate, but be provided with the pressure sensor of a signal piping pressure between the connecting line of the input port of described compressor and the outlet of described gas-liquid separator, but the end that described branched pipe is connected with described indoor heat exchanger is provided with the temperature sensor of a signal piping temperature.
2. multi-connected air conditioning system as claimed in claim 1, it is characterized in that: described off-premises station also comprises oil eliminator and electric expansion valve, described compressor delivery outlet connects described oil eliminator entrance, and described oil eliminator outlet connects the described outdoor heat exchanger of described outdoor heat exchanger and connects described the first tube connector by described electric expansion valve.
3. multi-connected air conditioning system as claimed in claim 2, it is characterized in that: described off-premises station also comprises the reversal valve that a changeable refrigerant flows to, described oil eliminator connects described outdoor heat exchanger by described reversal valve commutation, and described the second stop valve connects described gas-liquid separator by described reversal valve commutation.
4. multi-connected air conditioning system as claimed in claim 3, it is characterized in that: described reversal valve is cross valve, each interface connects respectively described oil eliminator, described gas-liquid separator, described the second tube connector and described outdoor heat exchanger.
5. multi-connected air conditioning system as claimed in claim 1 is characterized in that: between described the first tube connector and described outdoor heat exchanger, but logical the first stop valve that closes of a control piper is set.
6. multi-connected air conditioning system as claimed in claim 5, it is characterized in that: described the first stop valve and described the second stop valve are magnetic valve.
7. such as each described multi-connected air conditioning system of claim 1 to 6, it is characterized in that: each described indoor heat exchanger is connected between described the first tube connector and the second tube connector, and described the second dial-up dish, described branched pipe, described temperature sensor are identical with the quantity of described indoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494564 CN202835678U (en) | 2012-09-25 | 2012-09-25 | Multi-connecting type air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494564 CN202835678U (en) | 2012-09-25 | 2012-09-25 | Multi-connecting type air conditioning system |
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| Publication Number | Publication Date |
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| CN202835678U true CN202835678U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220494564 Expired - Fee Related CN202835678U (en) | 2012-09-25 | 2012-09-25 | Multi-connecting type air conditioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066326A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN105864984A (en) * | 2016-04-27 | 2016-08-17 | 广东美的暖通设备有限公司 | Adjusting method and device for indoor unit electronic expansion valve |
| CN106196684A (en) * | 2016-10-08 | 2016-12-07 | 广东美的暖通设备有限公司 | A kind of three multi-functional multi-connected air conditioning system of control and control methods thereof |
| CN107255306A (en) * | 2017-05-19 | 2017-10-17 | 海信（山东）空调有限公司 | A kind of Combined frequency-change air-conditioning and its control method |
-
2012
- 2012-09-25 CN CN 201220494564 patent/CN202835678U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066326A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN105066326B (en) * | 2015-07-15 | 2017-12-12 | 广东美的暖通设备有限公司 | A kind of air conditioning control method, system and air-conditioning |
| CN105864984A (en) * | 2016-04-27 | 2016-08-17 | 广东美的暖通设备有限公司 | Adjusting method and device for indoor unit electronic expansion valve |
| CN105864984B (en) * | 2016-04-27 | 2018-10-19 | 广东美的暖通设备有限公司 | Electronic expansion valve of indoor unit adjusting method and device |
| CN106196684A (en) * | 2016-10-08 | 2016-12-07 | 广东美的暖通设备有限公司 | A kind of three multi-functional multi-connected air conditioning system of control and control methods thereof |
| CN106196684B (en) * | 2016-10-08 | 2019-01-22 | 广东美的暖通设备有限公司 | The multi-functional multi-connected air conditioning system of three control of one kind and its control method |
| CN107255306A (en) * | 2017-05-19 | 2017-10-17 | 海信（山东）空调有限公司 | A kind of Combined frequency-change air-conditioning and its control method |
| CN107255306B (en) * | 2017-05-19 | 2023-02-17 | 海信空调有限公司 | Combined variable frequency air conditioner and control method thereof |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20180925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |